[v8,1/2] Added Digiteq Automotive MGB4 driver

Message ID	20230704131339.2177-2-tumic@gpxsee.org
State	Superseded
Headers	show Return-Path: <linux-media-owner@vger.kernel.org> From: tumic@gpxsee.org To: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Martin_T=C5=AFma?= <martin.tuma@digiteqautomotive.com> Subject: [PATCH v8 1/2] Added Digiteq Automotive MGB4 driver Date: Tue, 4 Jul 2023 15:13:38 +0200 Message-Id: <20230704131339.2177-2-tumic@gpxsee.org> In-Reply-To: <20230704131339.2177-1-tumic@gpxsee.org> References: <20230704131339.2177-1-tumic@gpxsee.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	Digiteq Automotive MGB4 driver \| expand [v8,0/2] Digiteq Automotive MGB4 driver [v8,1/2] Added Digiteq Automotive MGB4 driver [v8,2/2] Added Digiteq Automotive MGB4 driver documentation

On 04/07/2023 15:13, tumic@gpxsee.org wrote: > From: Martin Tůma <martin.tuma@digiteqautomotive.com> > > Digiteq Automotive MGB4 is a modular frame grabber PCIe card for automotive > video interfaces. As for now, two modules - FPD-Link and GMSL - are > available and supported by the driver. The card has two inputs and two > outputs (FPD-Link only). > > In addition to the video interfaces it also provides a trigger signal > interface and a MTD interface for FPGA firmware upload. > > Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com> > --- > MAINTAINERS | 7 + > drivers/media/pci/Kconfig | 1 + > drivers/media/pci/Makefile | 1 + > drivers/media/pci/mgb4/Kconfig | 17 + > drivers/media/pci/mgb4/Makefile | 6 + > drivers/media/pci/mgb4/mgb4_cmt.c | 244 +++++++ > drivers/media/pci/mgb4/mgb4_cmt.h | 17 + > drivers/media/pci/mgb4/mgb4_core.c | 711 ++++++++++++++++++ > drivers/media/pci/mgb4/mgb4_core.h | 72 ++ > drivers/media/pci/mgb4/mgb4_dma.c | 123 ++++ > drivers/media/pci/mgb4/mgb4_dma.h | 18 + > drivers/media/pci/mgb4/mgb4_i2c.c | 140 ++++ > drivers/media/pci/mgb4/mgb4_i2c.h | 35 + > drivers/media/pci/mgb4/mgb4_io.h | 33 + > drivers/media/pci/mgb4/mgb4_regs.c | 30 + > drivers/media/pci/mgb4/mgb4_regs.h | 35 + > drivers/media/pci/mgb4/mgb4_sysfs.h | 18 + > drivers/media/pci/mgb4/mgb4_sysfs_in.c | 757 +++++++++++++++++++ > drivers/media/pci/mgb4/mgb4_sysfs_out.c | 700 ++++++++++++++++++ > drivers/media/pci/mgb4/mgb4_sysfs_pci.c | 71 ++ > drivers/media/pci/mgb4/mgb4_trigger.c | 208 ++++++ > drivers/media/pci/mgb4/mgb4_trigger.h | 8 + > drivers/media/pci/mgb4/mgb4_vin.c | 930 ++++++++++++++++++++++++ > drivers/media/pci/mgb4/mgb4_vin.h | 69 ++ > drivers/media/pci/mgb4/mgb4_vout.c | 594 +++++++++++++++ > drivers/media/pci/mgb4/mgb4_vout.h | 65 ++ > 26 files changed, 4910 insertions(+) > create mode 100644 drivers/media/pci/mgb4/Kconfig > create mode 100644 drivers/media/pci/mgb4/Makefile > create mode 100644 drivers/media/pci/mgb4/mgb4_cmt.c > create mode 100644 drivers/media/pci/mgb4/mgb4_cmt.h > create mode 100644 drivers/media/pci/mgb4/mgb4_core.c > create mode 100644 drivers/media/pci/mgb4/mgb4_core.h > create mode 100644 drivers/media/pci/mgb4/mgb4_dma.c > create mode 100644 drivers/media/pci/mgb4/mgb4_dma.h > create mode 100644 drivers/media/pci/mgb4/mgb4_i2c.c > create mode 100644 drivers/media/pci/mgb4/mgb4_i2c.h > create mode 100644 drivers/media/pci/mgb4/mgb4_io.h > create mode 100644 drivers/media/pci/mgb4/mgb4_regs.c > create mode 100644 drivers/media/pci/mgb4/mgb4_regs.h > create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs.h > create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_in.c > create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_out.c > create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_pci.c > create mode 100644 drivers/media/pci/mgb4/mgb4_trigger.c > create mode 100644 drivers/media/pci/mgb4/mgb4_trigger.h > create mode 100644 drivers/media/pci/mgb4/mgb4_vin.c > create mode 100644 drivers/media/pci/mgb4/mgb4_vin.h > create mode 100644 drivers/media/pci/mgb4/mgb4_vout.c > create mode 100644 drivers/media/pci/mgb4/mgb4_vout.h > > diff --git a/MAINTAINERS b/MAINTAINERS > index bc201627c2e0..8ac4b4d6e8ca 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -6050,6 +6050,13 @@ L: linux-gpio@vger.kernel.org > S: Maintained > F: drivers/gpio/gpio-gpio-mm.c > > +DIGITEQ AUTOMOTIVE MGB4 V4L2 DRIVER > +M: Martin Tuma <martin.tuma@digiteqautomotive.com> > +L: linux-media@vger.kernel.org > +S: Maintained > +F: Documentation/admin-guide/media/mgb4.rst > +F: drivers/media/pci/mgb4/ > + > DIOLAN U2C-12 I2C DRIVER > M: Guenter Roeck <linux@roeck-us.net> > L: linux-i2c@vger.kernel.org > diff --git a/drivers/media/pci/Kconfig b/drivers/media/pci/Kconfig > index 480194543d05..28cea9675d71 100644 > --- a/drivers/media/pci/Kconfig > +++ b/drivers/media/pci/Kconfig > @@ -13,6 +13,7 @@ if MEDIA_PCI_SUPPORT > if MEDIA_CAMERA_SUPPORT > comment "Media capture support" > > +source "drivers/media/pci/mgb4/Kconfig" > source "drivers/media/pci/solo6x10/Kconfig" > source "drivers/media/pci/sta2x11/Kconfig" > source "drivers/media/pci/tw5864/Kconfig" > diff --git a/drivers/media/pci/Makefile b/drivers/media/pci/Makefile > index 8bed619b7130..f18c7e15abe3 100644 > --- a/drivers/media/pci/Makefile > +++ b/drivers/media/pci/Makefile > @@ -32,6 +32,7 @@ obj-$(CONFIG_VIDEO_CX25821) += cx25821/ > obj-$(CONFIG_VIDEO_CX88) += cx88/ > obj-$(CONFIG_VIDEO_DT3155) += dt3155/ > obj-$(CONFIG_VIDEO_IVTV) += ivtv/ > +obj-$(CONFIG_VIDEO_MGB4) += mgb4/ > obj-$(CONFIG_VIDEO_SAA7134) += saa7134/ > obj-$(CONFIG_VIDEO_SAA7164) += saa7164/ > obj-$(CONFIG_VIDEO_SOLO6X10) += solo6x10/ > diff --git a/drivers/media/pci/mgb4/Kconfig b/drivers/media/pci/mgb4/Kconfig > new file mode 100644 > index 000000000000..13fad15a434c > --- /dev/null > +++ b/drivers/media/pci/mgb4/Kconfig > @@ -0,0 +1,17 @@ > +# SPDX-License-Identifier: GPL-2.0-only > +config VIDEO_MGB4 > + tristate "Digiteq Automotive MGB4 support" > + depends on VIDEO_DEV && PCI && I2C && DMADEVICES && SPI && MTD && IIO > + select VIDEOBUF2_DMA_SG > + select IIO_BUFFER > + select IIO_TRIGGERED_BUFFER > + select I2C_XILINX > + select SPI_XILINX > + select MTD_SPI_NOR > + select XILINX_XDMA > + help > + This is a video4linux driver for Digiteq Automotive MGB4 grabber > + cards. > + > + To compile this driver as a module, choose M here: the > + module will be called mgb4. > diff --git a/drivers/media/pci/mgb4/Makefile b/drivers/media/pci/mgb4/Makefile > new file mode 100644 > index 000000000000..e92ead18bed0 > --- /dev/null > +++ b/drivers/media/pci/mgb4/Makefile > @@ -0,0 +1,6 @@ > +# SPDX-License-Identifier: GPL-2.0 > +mgb4-objs := mgb4_regs.o mgb4_core.o mgb4_vin.o mgb4_vout.o \ > + mgb4_sysfs_pci.o mgb4_sysfs_in.o mgb4_sysfs_out.o \ > + mgb4_i2c.o mgb4_cmt.o mgb4_trigger.o mgb4_dma.o > + > +obj-$(CONFIG_VIDEO_MGB4) += mgb4.o > diff --git a/drivers/media/pci/mgb4/mgb4_cmt.c b/drivers/media/pci/mgb4/mgb4_cmt.c > new file mode 100644 > index 000000000000..b8058da48b2d > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_cmt.c > @@ -0,0 +1,244 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * The CMT module configures the FPGA Clock Management Tile (CMT) registers. For > + * different video signal frequencies (FPGA input signal frequencies), the FPGA > + * CMT registers need to be adjusted for the FPGA to work properly. The values > + * are precomputed based on formulas given by Xilinx in their FPGA documentation > + * (which are in turn full of some magic values/tables...). > + */ > + > +#include <linux/types.h> > +#include <linux/kernel.h> > +#include "mgb4_core.h" > +#include "mgb4_cmt.h" > + > +static const u16 cmt_vals_out[][15] = { > + {0x1208, 0x0000, 0x171C, 0x0000, 0x1E38, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, > + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, > + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, > + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, > + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, > + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x124A, 0x0080, 0x0041, 0x010D, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1209, 0x0080, 0x0041, 0x013F, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x1100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1105, 0x0080, 0x1041, 0x01E8, 0x6401, 0x65E9, 0xFFFF, 0x9800, 0x1100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x00C4, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x138E, 0x0000, 0x0042, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175E, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x165A, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, > + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x171D, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1146, 0x0080, 0x1041, 0x0184, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1104, 0x0000, 0x1041, 0x01E8, 0x5801, 0x59E9, 0xFFFF, 0x9900, 0x0900, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1659, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1555, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0082, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1514, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1618, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1411, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1597, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x12CC, 0x0080, 0x0041, 0x00A9, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175E, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1492, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, > + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, > +}; > + > +static const u16 cmt_vals_in[][13] = { > + {0x1082, 0x0000, 0x5104, 0x0000, 0x11C7, 0x0000, 0x1041, 0x02BC, 0x7C01, 0xFFE9, 0x9900, 0x9908, 0x8100}, > + {0x1104, 0x0000, 0x9208, 0x0000, 0x138E, 0x0000, 0x1041, 0x015E, 0x7C01, 0xFFE9, 0x0100, 0x0908, 0x1000}, > +}; > + > +static const u32 cmt_addrs_out[][15] = { > + {0x420, 0x424, 0x428, 0x42C, 0x430, 0x434, 0x450, 0x454, 0x458, 0x460, 0x464, 0x468, 0x4A0, 0x538, 0x53C}, > + {0x620, 0x624, 0x628, 0x62C, 0x630, 0x634, 0x650, 0x654, 0x658, 0x660, 0x664, 0x668, 0x6A0, 0x738, 0x73C}, > +}; > + > +static const u32 cmt_addrs_in[][13] = { > + {0x020, 0x024, 0x028, 0x02C, 0x050, 0x054, 0x058, 0x060, 0x064, 0x068, 0x0A0, 0x138, 0x13C}, > + {0x220, 0x224, 0x228, 0x22C, 0x250, 0x254, 0x258, 0x260, 0x264, 0x268, 0x2A0, 0x338, 0x33C}, > +}; > + > +static const u32 cmt_freq[] = { > + 25000, 25510, 26020, 26530, 26983, 27551, 28000, 28570, > + 29046, 29522, 30000, 30476, 30952, 31546, 32000, 32539, > + 33035, 33571, 33928, 34522, 35000, 35428, 36000, 36571, > + 36904, 37500, 38093, 38571, 39047, 39453, 40000, 40476, > + 40952, 41494, 41964, 42857, 43535, 44047, 44444, 45000, > + 45535, 46029, 46428, 46823, 47617, 48214, 48571, 49107, > + 49523, 50000, 50476, 50892, 51428, 52380, 53333, 53967, > + 54285, 55238, 55555, 55952, 57142, 58095, 58571, 59047, > + 59521, 60000, 60316, 60952, 61428, 61904, 62500, 63092, > + 63491, 64282, 65078, 65476, 66071, 66664, 67142, 67854, > + 68571, 69044, 69642, 70000, 71425, 72616, 73214, 73808, > + 74285, 75000, 75714, 76187, 76785, 77142, 78570, 80000, > + 80357, 80951, 81428, 82142, 82857, 83332, 83928, 84285, > + 85713, 87142, 87500, 88094, 88571, 89285, 90000, 90475, > + 91071, 91428, 92856, 94642, > +}; > + > +static size_t freq_srch(u32 key, const u32 *array, size_t size) > +{ > + int l = 0; > + int r = size - 1; > + int m; > + > + while (l <= r) { > + m = (l + r) / 2; > + if (array[m] < key) > + l = m + 1; > + else if (array[m] > key) > + r = m - 1; > + else > + return m; > + } > + > + if (r < 0 || l > size - 1) > + return m; > + else > + return (abs(key - array[l]) < abs(key - array[r])) ? l : r; > +} > + > +u32 mgb4_cmt_set_vout_freq(struct mgb4_vout_dev *voutdev, unsigned int freq) > +{ > + struct mgb4_regs *video = &voutdev->mgbdev->video; > + const struct mgb4_vout_regs *regs = &voutdev->config->regs; > + const u16 *reg_set; > + const u32 *addr; > + u32 config; > + size_t i, index; > + > + index = freq_srch(freq, cmt_freq, ARRAY_SIZE(cmt_freq)); > + addr = cmt_addrs_out[voutdev->config->id]; > + reg_set = cmt_vals_out[index]; > + > + config = mgb4_read_reg(video, regs->config); > + > + mgb4_write_reg(video, regs->config, 0x1 | (config & ~0x3)); > + > + for (i = 0; i < ARRAY_SIZE(cmt_addrs_out[0]); i++) > + mgb4_write_reg(&voutdev->mgbdev->cmt, addr[i], reg_set[i]); > + > + mgb4_mask_reg(video, regs->config, 0x100, 0x100); > + mgb4_mask_reg(video, regs->config, 0x100, 0x0); > + > + mgb4_write_reg(video, regs->config, config & ~0x1); > + > + return cmt_freq[index]; > +} > + > +void mgb4_cmt_set_vin_freq_range(struct mgb4_vin_dev *vindev, > + unsigned int freq_range) > +{ > + struct mgb4_regs *video = &vindev->mgbdev->video; > + const struct mgb4_vin_regs *regs = &vindev->config->regs; > + const u16 *reg_set; > + const u32 *addr; > + u32 config; > + size_t i; > + > + addr = cmt_addrs_in[vindev->config->id]; > + reg_set = cmt_vals_in[freq_range]; > + > + config = mgb4_read_reg(video, regs->config); > + > + mgb4_write_reg(video, regs->config, 0x1 | (config & ~0x3)); > + > + for (i = 0; i < ARRAY_SIZE(cmt_addrs_in[0]); i++) > + mgb4_write_reg(&vindev->mgbdev->cmt, addr[i], reg_set[i]); > + > + mgb4_mask_reg(video, regs->config, 0x1000, 0x1000); > + mgb4_mask_reg(video, regs->config, 0x1000, 0x0); > + > + mgb4_write_reg(video, regs->config, config & ~0x1); > +} > diff --git a/drivers/media/pci/mgb4/mgb4_cmt.h b/drivers/media/pci/mgb4/mgb4_cmt.h > new file mode 100644 > index 000000000000..b15df56ca059 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_cmt.h > @@ -0,0 +1,17 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_CMT_H__ > +#define __MGB4_CMT_H__ > + > +#include "mgb4_vout.h" > +#include "mgb4_vin.h" > + > +u32 mgb4_cmt_set_vout_freq(struct mgb4_vout_dev *voutdev, unsigned int freq); > +void mgb4_cmt_set_vin_freq_range(struct mgb4_vin_dev *vindev, > + unsigned int freq_range); > + > +#endif > diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c > new file mode 100644 > index 000000000000..33ad447c1811 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_core.c > @@ -0,0 +1,711 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * This is the driver for the MGB4 video grabber card by Digiteq Automotive. > + * > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * This is the main driver module. The DMA, I2C and SPI sub-drivers are > + * initialized here and the input/output v4l2 devices are created. > + * > + * The mgb4 card uses different expansion modules for different video sources > + * (GMSL and FPDL3 for now) so in probe() we detect the module type based on > + * what we see on the I2C bus and check if it matches the FPGA bitstream (there > + * are different bitstreams for different expansion modules). When no expansion > + * module is present, we still let the driver initialize to allow flashing of > + * the FPGA firmware using the SPI FLASH device. No v4l2 video devices are > + * created in this case. > + */ > + > +#include <linux/types.h> > +#include <linux/module.h> > +#include <linux/pci.h> > +#include <linux/platform_device.h> > +#include <linux/clk.h> > +#include <linux/clk-provider.h> > +#include <linux/clkdev.h> > +#include <linux/i2c.h> > +#include <linux/delay.h> > +#include <linux/dma/amd_xdma.h> > +#include <linux/platform_data/amd_xdma.h> > +#include <linux/spi/xilinx_spi.h> > +#include <linux/mtd/mtd.h> > +#include <linux/hwmon.h> > +#include <linux/debugfs.h> > +#include "mgb4_dma.h" > +#include "mgb4_i2c.h" > +#include "mgb4_sysfs.h" > +#include "mgb4_vout.h" > +#include "mgb4_vin.h" > +#include "mgb4_trigger.h" > +#include "mgb4_core.h" > + > +#define MGB4_USER_IRQS 16 > + > +static int flashid; > + > +static struct xdma_chan_info h2c_chan_info = { > + .dir = DMA_MEM_TO_DEV, > +}; > + > +static struct xdma_chan_info c2h_chan_info = { > + .dir = DMA_DEV_TO_MEM, > +}; > + > +static struct xspi_platform_data spi_platform_data = { > + .num_chipselect = 1, > + .bits_per_word = 8 > +}; > + > +static const struct i2c_board_info extender_info = { > + I2C_BOARD_INFO("extender", 0x21) > +}; > + > +#if IS_REACHABLE(CONFIG_HWMON) > +static umode_t temp_is_visible(const void *data, enum hwmon_sensor_types type, > + u32 attr, int channel) > +{ > + if (type == hwmon_temp && > + (attr == hwmon_temp_input || attr == hwmon_temp_label)) > + return 0444; > + else > + return 0; > +} > + > +static int temp_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, > + int channel, long *val) > +{ > + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); > + u32 val10, raw; > + > + if (type == hwmon_temp && attr == hwmon_temp_input) { > + raw = mgb4_read_reg(&mgbdev->video, 0xD0); > + /* register value -> Celsius degrees formula given by Xilinx */ > + val10 = ((((raw >> 20) & 0xFFF) * 503975) - 1118822400) / 409600; > + *val = val10 * 100; > + return 0; > + } else { > + return -EOPNOTSUPP; > + } I would reverse the condition: if (type != hwmon_temp || attr != hwmon_temp_input) return -EOPNOTSUPP; ... return 0; Easier to read that way. > +} > + > +static int temp_read_string(struct device *dev, enum hwmon_sensor_types type, > + u32 attr, int channel, const char **str) > +{ > + if (type == hwmon_temp && attr == hwmon_temp_label) { > + *str = "FPGA Temperature"; > + return 0; > + } else { > + return -EOPNOTSUPP; > + } Ditto. > +} > + > +static const struct hwmon_ops temp_ops = { > + .is_visible = temp_is_visible, > + .read = temp_read, > + .read_string = temp_read_string > +}; > + > +static const struct hwmon_channel_info *temp_channel_info[] = { > + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_LABEL), > + NULL > +}; > + > +static const struct hwmon_chip_info temp_chip_info = { > + .ops = &temp_ops, > + .info = temp_channel_info, > +}; > +#endif > + > +static int match_i2c_adap(struct device *dev, void *data) > +{ > + return i2c_verify_adapter(dev) ? 1 : 0; > +} > + > +static struct i2c_adapter *get_i2c_adap(struct platform_device *pdev) > +{ > + struct device *dev; > + > + mutex_lock(&pdev->dev.mutex); > + dev = device_find_child(&pdev->dev, NULL, match_i2c_adap); > + mutex_unlock(&pdev->dev.mutex); > + > + return dev ? to_i2c_adapter(dev) : NULL; > +} > + > +static int match_spi_adap(struct device *dev, void *data) > +{ > + return to_spi_device(dev) ? 1 : 0; > +} > + > +static struct spi_master *get_spi_adap(struct platform_device *pdev) > +{ > + struct device *dev; > + > + mutex_lock(&pdev->dev.mutex); > + dev = device_find_child(&pdev->dev, NULL, match_spi_adap); > + mutex_unlock(&pdev->dev.mutex); > + > + return dev ? container_of(dev, struct spi_master, dev) : NULL; > +} > + > +static int init_spi(struct mgb4_dev *mgbdev) > +{ > + struct resource spi_resources[] = { > + { > + .start = 0x400, > + .end = 0x47f, > + .flags = IORESOURCE_MEM, > + .name = "io-memory", > + }, > + { > + .start = 14, > + .end = 14, > + .flags = IORESOURCE_IRQ, > + .name = "irq", > + }, > + }; > + struct spi_board_info spi_info = { > + .max_speed_hz = 10000000, > + .modalias = "m25p80", > + .chip_select = 0, > + .mode = SPI_MODE_3, > + }; > + struct pci_dev *pdev = mgbdev->pdev; > + struct device *dev = &pdev->dev; > + struct spi_master *master; > + struct spi_device *spi_dev; > + u32 irq; > + int rv, id; > + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); > + > + request_module("platform:xilinx_spi"); > + > + irq = xdma_get_user_irq(mgbdev->xdev, 14); > + xdma_enable_user_irq(mgbdev->xdev, irq); > + > + spi_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID]; > + spi_resources[0].start += mapbase; > + spi_resources[0].end += mapbase; > + spi_resources[1].start = irq; > + spi_resources[1].end = irq; > + > + id = pci_dev_id(pdev); > + mgbdev->spi_pdev = platform_device_register_resndata(dev, "xilinx_spi", > + id, spi_resources, > + ARRAY_SIZE(spi_resources), > + &spi_platform_data, > + sizeof(spi_platform_data)); > + if (IS_ERR(mgbdev->spi_pdev)) { > + dev_err(dev, "failed to register SPI device\n"); > + return PTR_ERR(mgbdev->spi_pdev); > + } > + > + master = get_spi_adap(mgbdev->spi_pdev); > + if (!master) { > + dev_err(dev, "failed to get SPI adapter\n"); > + rv = -EINVAL; > + goto err_pdev; > + } > + > + snprintf(mgbdev->fw_part_name, sizeof(mgbdev->fw_part_name), > + "mgb4-fw.%d", flashid); > + mgbdev->partitions[0].name = mgbdev->fw_part_name; > + mgbdev->partitions[0].size = 0x400000; > + mgbdev->partitions[0].offset = 0x400000; > + mgbdev->partitions[0].mask_flags = 0; > + > + snprintf(mgbdev->data_part_name, sizeof(mgbdev->data_part_name), > + "mgb4-data.%d", flashid); > + mgbdev->partitions[1].name = mgbdev->data_part_name; > + mgbdev->partitions[1].size = 0x10000; > + mgbdev->partitions[1].offset = 0xFF0000; > + mgbdev->partitions[1].mask_flags = MTD_CAP_NORFLASH; > + > + snprintf(mgbdev->flash_name, sizeof(mgbdev->flash_name), > + "mgb4-flash.%d", flashid); > + mgbdev->flash_data.name = mgbdev->flash_name; > + mgbdev->flash_data.parts = mgbdev->partitions; > + mgbdev->flash_data.nr_parts = ARRAY_SIZE(mgbdev->partitions); > + mgbdev->flash_data.type = "spi-nor"; > + > + spi_info.platform_data = &mgbdev->flash_data; > + > + spi_dev = spi_new_device(master, &spi_info); > + put_device(&master->dev); > + if (!spi_dev) { > + dev_err(dev, "failed to create MTD device\n"); > + rv = -EINVAL; > + goto err_pdev; > + } > + > + return 0; > + > +err_pdev: > + platform_device_unregister(mgbdev->spi_pdev); > + > + return rv; > +} > + > +static void free_spi(struct mgb4_dev *mgbdev) > +{ > + platform_device_unregister(mgbdev->spi_pdev); > +} > + > +static int init_i2c(struct mgb4_dev *mgbdev) > +{ > + struct resource i2c_resources[] = { > + { > + .start = 0x200, > + .end = 0x3ff, > + .flags = IORESOURCE_MEM, > + .name = "io-memory", > + }, > + { > + .start = 15, > + .end = 15, > + .flags = IORESOURCE_IRQ, > + .name = "irq", > + }, > + }; > + struct pci_dev *pdev = mgbdev->pdev; > + struct device *dev = &pdev->dev; > + char clk_name[16]; > + u32 irq; > + int rv, id; > + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); > + > + request_module("platform:xiic-i2c"); > + > + irq = xdma_get_user_irq(mgbdev->xdev, 15); > + xdma_enable_user_irq(mgbdev->xdev, irq); > + > + i2c_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID]; > + i2c_resources[0].start += mapbase; > + i2c_resources[0].end += mapbase; > + i2c_resources[1].start = irq; > + i2c_resources[1].end = irq; > + > + id = pci_dev_id(pdev); > + > + /* create dummy clock required by the xiic-i2c adapter */ > + snprintf(clk_name, sizeof(clk_name), "xiic-i2c.%d", id); > + mgbdev->i2c_clk = clk_hw_register_fixed_rate(NULL, clk_name, NULL, > + 0, 125000000); > + if (IS_ERR(mgbdev->i2c_clk)) { > + dev_err(dev, "failed to register I2C clock\n"); > + return PTR_ERR(mgbdev->i2c_clk); > + } > + mgbdev->i2c_cl = clkdev_hw_create(mgbdev->i2c_clk, NULL, "xiic-i2c.%d", > + id); > + if (!mgbdev->i2c_cl) { > + dev_err(dev, "failed to register I2C clockdev\n"); > + rv = -ENOMEM; > + goto err_clk; > + } > + > + mgbdev->i2c_pdev = platform_device_register_resndata(dev, "xiic-i2c", > + id, i2c_resources, > + ARRAY_SIZE(i2c_resources), > + NULL, 0); > + if (IS_ERR(mgbdev->i2c_pdev)) { > + dev_err(dev, "failed to register I2C device\n"); > + rv = PTR_ERR(mgbdev->i2c_pdev); > + goto err_clkdev; > + } > + > + mgbdev->i2c_adap = get_i2c_adap(mgbdev->i2c_pdev); > + if (!mgbdev->i2c_adap) { > + dev_err(dev, "failed to get I2C adapter\n"); > + rv = -EINVAL; > + goto err_pdev; > + } > + > + mutex_init(&mgbdev->i2c_lock); > + > + return 0; > + > +err_pdev: > + platform_device_unregister(mgbdev->i2c_pdev); > +err_clkdev: > + clkdev_drop(mgbdev->i2c_cl); > +err_clk: > + clk_hw_unregister(mgbdev->i2c_clk); > + > + return rv; > +} > + > +static void free_i2c(struct mgb4_dev *mgbdev) > +{ > + put_device(&mgbdev->i2c_adap->dev); > + platform_device_unregister(mgbdev->i2c_pdev); > + clkdev_drop(mgbdev->i2c_cl); > + clk_hw_unregister(mgbdev->i2c_clk); > +} > + > +static int init_sysfs(struct pci_dev *pdev) > +{ > + struct device_attribute **attr, **eattr; > + int rv; > + > + for (attr = mgb4_pci_attrs; *attr; attr++) { > + rv = device_create_file(&pdev->dev, *attr); > + if (rv < 0) > + goto err_file; > + } > + > + return 0; > + > +err_file: > + for (eattr = mgb4_pci_attrs; eattr != attr; eattr++) > + device_remove_file(&pdev->dev, *eattr); > + > + return rv; > +} > + > +static void free_sysfs(struct pci_dev *pdev) > +{ > + struct device_attribute **attr; > + > + for (attr = mgb4_pci_attrs; *attr; attr++) > + device_remove_file(&pdev->dev, *attr); > +} > + > +static int get_serial_number(struct mgb4_dev *mgbdev) > +{ > + struct device *dev = &mgbdev->pdev->dev; > + struct mtd_info *mtd; > + size_t rs; > + int rv; > + > + mgbdev->serial_number = 0; > + > + mtd = get_mtd_device_nm(mgbdev->data_part_name); > + if (IS_ERR(mtd)) { > + dev_warn(dev, "failed to get data MTD device\n"); > + return -ENOENT; > + } > + rv = mtd_read(mtd, 0, sizeof(mgbdev->serial_number), &rs, > + (u_char *)&mgbdev->serial_number); > + put_mtd_device(mtd); > + if (rv < 0 || rs != sizeof(mgbdev->serial_number)) { > + dev_warn(dev, "error reading MTD device\n"); > + return -EIO; > + } > + > + return 0; > +} > + > +static int get_module_version(struct mgb4_dev *mgbdev) > +{ > + struct device *dev = &mgbdev->pdev->dev; > + struct mgb4_i2c_client extender; > + s32 version; > + u32 fw_version; > + int rv; > + > + rv = mgb4_i2c_init(&extender, mgbdev->i2c_adap, &extender_info, 8); > + if (rv < 0) { > + dev_err(dev, "failed to create extender I2C device\n"); > + return rv; > + } > + version = mgb4_i2c_read_byte(&extender, 0x00); > + mgb4_i2c_free(&extender); > + if (version < 0) { > + dev_err(dev, "error reading module version\n"); > + return -EIO; > + } > + > + mgbdev->module_version = ~((u32)version) & 0xff; > + if (!(MGB4_IS_FPDL3(mgbdev) || MGB4_IS_GMSL(mgbdev))) { > + dev_err(dev, "unknown module type\n"); > + return -EINVAL; > + } > + fw_version = mgb4_read_reg(&mgbdev->video, 0xC4); > + if (fw_version >> 24 != mgbdev->module_version >> 4) { > + dev_err(dev, "module/firmware type mismatch\n"); > + return -EINVAL; > + } > + > + dev_info(dev, "%s module detected\n", > + MGB4_IS_FPDL3(mgbdev) ? "FPDL3" : "GMSL"); > + > + return 0; > +} > + > +static int map_regs(struct pci_dev *pdev, struct resource *res, > + struct mgb4_regs *regs) > +{ > + int rv; > + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); > + > + res->start += mapbase; > + res->end += mapbase; > + > + rv = mgb4_regs_map(res, regs); > + if (rv < 0) { > + dev_err(&pdev->dev, "failed to map %s registers\n", res->name); > + return rv; > + } > + > + return 0; > +} > + > +static int init_xdma(struct mgb4_dev *mgbdev) > +{ > + struct xdma_platdata data; > + struct resource res[2] = { 0 }; > + struct dma_slave_map *map; > + struct pci_dev *pdev = mgbdev->pdev; > + struct device *dev = &pdev->dev; > + int i; > + > + res[0].start = pci_resource_start(pdev, MGB4_XDMA_BAR_ID); > + res[0].end = pci_resource_end(pdev, MGB4_XDMA_BAR_ID); > + res[0].flags = IORESOURCE_MEM; > + res[0].parent = &pdev->resource[MGB4_XDMA_BAR_ID]; > + res[1].start = pci_irq_vector(pdev, 0); > + res[1].end = res[1].start + MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES > + + MGB4_USER_IRQS - 1; > + res[1].flags = IORESOURCE_IRQ; > + > + data.max_dma_channels = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; > + data.device_map = mgbdev->slave_map; > + data.device_map_cnt = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; > + > + for (i = 0; i < MGB4_VIN_DEVICES; i++) { > + sprintf(mgbdev->channel_names[i], "c2h%d", i); > + map = &data.device_map[i]; > + map->slave = mgbdev->channel_names[i]; > + map->devname = dev_name(dev); > + map->param = XDMA_FILTER_PARAM(&c2h_chan_info); > + } > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { > + sprintf(mgbdev->channel_names[i + MGB4_VIN_DEVICES], "h2c%d", i); > + map = &data.device_map[i + MGB4_VIN_DEVICES]; > + map->slave = mgbdev->channel_names[i + MGB4_VIN_DEVICES]; > + map->devname = dev_name(dev); > + map->param = XDMA_FILTER_PARAM(&h2c_chan_info); > + } > + > + mgbdev->xdev = platform_device_register_resndata(dev, "xdma", > + PLATFORM_DEVID_AUTO, res, > + 2, &data, sizeof(data)); > + if (IS_ERR(mgbdev->xdev)) { > + dev_err(dev, "failed to register XDMA device\n"); > + return PTR_ERR(mgbdev->xdev); > + } > + > + return 0; > +} > + > +static void free_xdma(struct mgb4_dev *mgbdev) > +{ > + platform_device_unregister(mgbdev->xdev); > +} > + > +static int mgb4_probe(struct pci_dev *pdev, const struct pci_device_id *id) > +{ > + int i, rv; > + struct mgb4_dev *mgbdev; > + struct resource video = { > + .start = 0x0, > + .end = 0x100, > + .flags = IORESOURCE_MEM, > + .name = "mgb4-video", > + }; > + struct resource cmt = { > + .start = 0x1000, > + .end = 0x1800, > + .flags = IORESOURCE_MEM, > + .name = "mgb4-cmt", > + }; > + int irqs = pci_msix_vec_count(pdev); > + > + mgbdev = kzalloc(sizeof(*mgbdev), GFP_KERNEL); > + if (!mgbdev) > + return -ENOMEM; > + > + mgbdev->pdev = pdev; > + pci_set_drvdata(pdev, mgbdev); > + > + /* PCIe related stuff */ > + rv = pci_enable_device(pdev); > + if (rv) { > + dev_err(&pdev->dev, "error enabling PCI device\n"); > + goto err_mgbdev; > + } > + > + rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN); > + if (rv) > + dev_warn(&pdev->dev, "error enabling PCIe relaxed ordering\n"); > + rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_EXT_TAG); > + if (rv) > + dev_warn(&pdev->dev, "error enabling PCIe extended tag field\n"); > + rv = pcie_set_readrq(pdev, 512); > + if (rv) > + dev_warn(&pdev->dev, "error setting PCIe max. memory read size\n"); > + pci_set_master(pdev); > + > + rv = pci_alloc_irq_vectors(pdev, irqs, irqs, PCI_IRQ_MSIX); > + if (rv < 0) { > + dev_err(&pdev->dev, "error allocating MSI-X IRQs\n"); > + goto err_enable_pci; > + } > + > + rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); > + if (rv) { > + dev_err(&pdev->dev, "error setting DMA mask\n"); > + goto err_enable_pci; > + } > + > + /* DMA + IRQ engine */ > + rv = init_xdma(mgbdev); > + if (rv) > + goto err_alloc_irq; > + rv = mgb4_dma_channel_init(mgbdev); > + if (rv) > + goto err_dma_chan; > + > + /* mgb4 video registers */ > + rv = map_regs(pdev, &video, &mgbdev->video); > + if (rv < 0) > + goto err_dma_chan; > + /* mgb4 cmt registers */ > + rv = map_regs(pdev, &cmt, &mgbdev->cmt); > + if (rv < 0) > + goto err_video_regs; > + > + /* SPI FLASH */ > + rv = init_spi(mgbdev); > + if (rv < 0) > + goto err_cmt_regs; > + > + /* I2C controller */ > + rv = init_i2c(mgbdev); > + if (rv < 0) > + goto err_spi; > + > + /* PCI card related sysfs attributes */ > + rv = init_sysfs(pdev); > + if (rv < 0) > + goto err_i2c; > + > +#if IS_REACHABLE(CONFIG_HWMON) > + /* HWmon (card temperature) */ > + mgbdev->hwmon_dev = hwmon_device_register_with_info(&pdev->dev, "mgb4", > + mgbdev, > + &temp_chip_info, 0); > +#endif > + > +#ifdef CONFIG_DEBUG_FS > + mgbdev->debugfs = debugfs_create_dir(dev_name(&pdev->dev), NULL); > +#endif > + > + /* Get card serial number. On systems without MTD flash support we may > + * get an error thus ignore the return value. An invalid serial number > + * should not break anything... > + */ > + if (get_serial_number(mgbdev) < 0) > + dev_warn(&pdev->dev, "error reading card serial number\n"); > + > + /* Get module type. If no valid module is found, skip the video device > + * creation part but do not exit with error to allow flashing the card. > + */ > + rv = get_module_version(mgbdev); > + if (rv < 0) > + goto exit; > + > + /* Video input v4l2 devices */ > + for (i = 0; i < MGB4_VIN_DEVICES; i++) > + mgbdev->vin[i] = mgb4_vin_create(mgbdev, i); > + > + /* Video output v4l2 devices */ > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) > + mgbdev->vout[i] = mgb4_vout_create(mgbdev, i); > + > + /* Triggers */ > + mgbdev->indio_dev = mgb4_trigger_create(mgbdev); > + > +exit: > + flashid++; > + > + return 0; > + > +err_i2c: > + free_i2c(mgbdev); > +err_spi: > + free_spi(mgbdev); > +err_cmt_regs: > + mgb4_regs_free(&mgbdev->cmt); > +err_video_regs: > + mgb4_regs_free(&mgbdev->video); > +err_dma_chan: > + mgb4_dma_channel_free(mgbdev); > + free_xdma(mgbdev); > +err_alloc_irq: > + pci_disable_msix(pdev); > +err_enable_pci: > + pci_disable_device(pdev); > +err_mgbdev: > + kfree(mgbdev); > + > + return rv; > +} > + > +static void mgb4_remove(struct pci_dev *pdev) > +{ > + struct mgb4_dev *mgbdev = pci_get_drvdata(pdev); > + int i; > + > +#ifdef CONFIG_DEBUG_FS > + debugfs_remove_recursive(mgbdev->debugfs); > +#endif > +#if IS_REACHABLE(CONFIG_HWMON) > + hwmon_device_unregister(mgbdev->hwmon_dev); > +#endif > + > + if (mgbdev->indio_dev) > + mgb4_trigger_free(mgbdev->indio_dev); > + > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) > + if (mgbdev->vout[i]) > + mgb4_vout_free(mgbdev->vout[i]); > + for (i = 0; i < MGB4_VIN_DEVICES; i++) > + if (mgbdev->vin[i]) > + mgb4_vin_free(mgbdev->vin[i]); > + > + free_sysfs(mgbdev->pdev); > + free_spi(mgbdev); > + free_i2c(mgbdev); > + mgb4_regs_free(&mgbdev->video); > + mgb4_regs_free(&mgbdev->cmt); > + > + mgb4_dma_channel_free(mgbdev); > + free_xdma(mgbdev); > + > + pci_disable_msix(mgbdev->pdev); > + pci_disable_device(mgbdev->pdev); > + > + kfree(mgbdev); > +} > + > +static const struct pci_device_id mgb4_pci_ids[] = { > + { PCI_DEVICE(0x1ed8, 0x0101), }, > + { 0, } > +}; > +MODULE_DEVICE_TABLE(pci, mgb4_pci_ids); > + > +static struct pci_driver mgb4_pci_driver = { > + .name = KBUILD_MODNAME, > + .id_table = mgb4_pci_ids, > + .probe = mgb4_probe, > + .remove = mgb4_remove, > +}; > + > +module_pci_driver(mgb4_pci_driver); > + > +MODULE_AUTHOR("Digiteq Automotive s.r.o."); > +MODULE_DESCRIPTION("Digiteq Automotive MGB4 Driver"); > +MODULE_LICENSE("GPL"); > +MODULE_SOFTDEP("pre: platform:xiic-i2c platform:xilinx_spi spi-nor"); > diff --git a/drivers/media/pci/mgb4/mgb4_core.h b/drivers/media/pci/mgb4/mgb4_core.h > new file mode 100644 > index 000000000000..65445c41ad56 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_core.h > @@ -0,0 +1,72 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_CORE_H__ > +#define __MGB4_CORE_H__ > + > +#include <linux/spi/flash.h> > +#include <linux/mtd/partitions.h> > +#include <linux/mutex.h> > +#include <linux/dmaengine.h> > +#include "mgb4_regs.h" > + > +#define MGB4_VIN_DEVICES 2 > +#define MGB4_VOUT_DEVICES 2 > + > +#define MGB4_MGB4_BAR_ID 0 > +#define MGB4_XDMA_BAR_ID 1 > + > +#define MGB4_IS_GMSL(mgbdev) \ > + ((mgbdev)->module_version >> 4 == 2) > +#define MGB4_IS_FPDL3(mgbdev) \ > + ((mgbdev)->module_version >> 4 == 1) > + > +struct mgb4_dma_channel { > + struct dma_chan *chan; > + struct completion req_compl; > +}; > + > +struct mgb4_dev { > + struct pci_dev *pdev; > + struct platform_device *xdev; > + struct mgb4_vin_dev *vin[MGB4_VIN_DEVICES]; > + struct mgb4_vout_dev *vout[MGB4_VOUT_DEVICES]; > + > + struct mgb4_dma_channel c2h_chan[MGB4_VIN_DEVICES]; > + struct mgb4_dma_channel h2c_chan[MGB4_VOUT_DEVICES]; > + struct dma_slave_map slave_map[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES]; > + > + struct mgb4_regs video; > + struct mgb4_regs cmt; > + > + struct clk_hw *i2c_clk; > + struct clk_lookup *i2c_cl; > + struct platform_device *i2c_pdev; > + struct i2c_adapter *i2c_adap; > + struct mutex i2c_lock; /* I2C bus access lock */ > + > + struct platform_device *spi_pdev; > + struct flash_platform_data flash_data; > + struct mtd_partition partitions[2]; > + char flash_name[16]; > + char fw_part_name[16]; > + char data_part_name[16]; > + char channel_names[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES][16]; > + > + struct iio_dev *indio_dev; > +#if IS_REACHABLE(CONFIG_HWMON) > + struct device *hwmon_dev; > +#endif > + > + u8 module_version; > + u32 serial_number; > + > +#ifdef CONFIG_DEBUG_FS > + struct dentry *debugfs; > +#endif > +}; > + > +#endif > diff --git a/drivers/media/pci/mgb4/mgb4_dma.c b/drivers/media/pci/mgb4/mgb4_dma.c > new file mode 100644 > index 000000000000..cae888e6504b > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_dma.c > @@ -0,0 +1,123 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2022 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * This module handles the DMA transfers. A standard dmaengine API as provided > + * by the XDMA module is used. > + */ > + > +#include <linux/pci.h> > +#include <linux/dma-direction.h> > +#include "mgb4_core.h" > +#include "mgb4_dma.h" > + > +static void chan_irq(void *param) > +{ > + struct mgb4_dma_channel *chan = param; > + > + complete(&chan->req_compl); > +} > + > +int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write, > + u64 paddr, struct sg_table *sgt) > +{ > + struct dma_slave_config cfg; > + struct mgb4_dma_channel *chan; > + struct dma_async_tx_descriptor *tx; > + struct pci_dev *pdev = mgbdev->pdev; > + int ret; > + > + memset(&cfg, 0, sizeof(cfg)); > + > + if (write) { > + cfg.direction = DMA_MEM_TO_DEV; > + cfg.dst_addr = paddr; > + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; > + chan = &mgbdev->h2c_chan[channel]; > + } else { > + cfg.direction = DMA_DEV_TO_MEM; > + cfg.src_addr = paddr; > + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; > + chan = &mgbdev->c2h_chan[channel]; > + } > + > + ret = dmaengine_slave_config(chan->chan, &cfg); > + if (ret) { > + dev_err(&pdev->dev, "failed to config dma: %d\n", ret); > + return ret; > + } > + > + tx = dmaengine_prep_slave_sg(chan->chan, sgt->sgl, sgt->nents, > + cfg.direction, 0); > + if (!tx) { > + dev_err(&pdev->dev, "failed to prep slave sg\n"); > + return -EIO; > + } > + > + tx->callback = chan_irq; > + tx->callback_param = chan; > + > + ret = dma_submit_error(dmaengine_submit(tx)); > + if (ret) { > + dev_err(&pdev->dev, "failed to submit sg\n"); > + return -EIO; > + } > + > + dma_async_issue_pending(chan->chan); > + > + if (!wait_for_completion_timeout(&chan->req_compl, > + msecs_to_jiffies(10000))) { > + dev_err(&pdev->dev, "dma timeout\n"); > + dmaengine_terminate_sync(chan->chan); > + return -EIO; > + } > + > + return 0; > +} > + > +int mgb4_dma_channel_init(struct mgb4_dev *mgbdev) > +{ > + int i, ret; > + char name[16]; > + struct pci_dev *pdev = mgbdev->pdev; > + > + for (i = 0; i < MGB4_VIN_DEVICES; i++) { > + sprintf(name, "c2h%d", i); > + mgbdev->c2h_chan[i].chan = dma_request_chan(&pdev->dev, name); > + if (IS_ERR(mgbdev->c2h_chan[i].chan)) { > + dev_err(&pdev->dev, "failed to initialize %s", name); > + ret = PTR_ERR(mgbdev->c2h_chan[i].chan); > + mgbdev->c2h_chan[i].chan = NULL; > + return ret; > + } > + init_completion(&mgbdev->c2h_chan[i].req_compl); > + } > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { > + sprintf(name, "h2c%d", i); > + mgbdev->h2c_chan[i].chan = dma_request_chan(&pdev->dev, name); > + if (IS_ERR(mgbdev->h2c_chan[i].chan)) { > + dev_err(&pdev->dev, "failed to initialize %s", name); > + ret = PTR_ERR(mgbdev->h2c_chan[i].chan); > + mgbdev->h2c_chan[i].chan = NULL; > + return ret; > + } > + init_completion(&mgbdev->h2c_chan[i].req_compl); > + } > + > + return 0; > +} > + > +void mgb4_dma_channel_free(struct mgb4_dev *mgbdev) > +{ > + int i; > + > + for (i = 0; i < MGB4_VIN_DEVICES; i++) { > + if (mgbdev->c2h_chan[i].chan) > + dma_release_channel(mgbdev->c2h_chan[i].chan); > + } > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { > + if (mgbdev->h2c_chan[i].chan) > + dma_release_channel(mgbdev->h2c_chan[i].chan); > + } > +} > diff --git a/drivers/media/pci/mgb4/mgb4_dma.h b/drivers/media/pci/mgb4/mgb4_dma.h > new file mode 100644 > index 000000000000..4ebc2b1ce9b7 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_dma.h > @@ -0,0 +1,18 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_DMA_H__ > +#define __MGB4_DMA_H__ > + > +#include "mgb4_core.h" > + > +int mgb4_dma_channel_init(struct mgb4_dev *mgbdev); > +void mgb4_dma_channel_free(struct mgb4_dev *mgbdev); > + > +int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write, > + u64 paddr, struct sg_table *sgt); > + > +#endif > diff --git a/drivers/media/pci/mgb4/mgb4_i2c.c b/drivers/media/pci/mgb4/mgb4_i2c.c > new file mode 100644 > index 000000000000..2697b67e290e > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_i2c.c > @@ -0,0 +1,140 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * The i2c module unifies the I2C access to the serializes/deserializes. The I2C > + * chips on the GMSL module use 16b addressing, the FPDL3 chips use standard > + * 8b addressing. > + */ > + > +#include "mgb4_i2c.h" > + > +static int read_r16(struct i2c_client *client, u16 reg, u8 *val, int len) > +{ > + int ret; > + u8 buf[2]; > + struct i2c_msg msg[2] = { > + { > + .addr = client->addr, > + .flags = 0, > + .len = 2, > + .buf = buf, > + }, { > + .addr = client->addr, > + .flags = I2C_M_RD, > + .len = len, > + .buf = val, > + } > + }; > + > + buf[0] = (reg >> 8) & 0xff; > + buf[1] = (reg >> 0) & 0xff; > + > + ret = i2c_transfer(client->adapter, msg, 2); > + if (ret < 0) > + return ret; > + else if (ret != 2) > + return -EREMOTEIO; > + else > + return 0; > +} > + > +static int write_r16(struct i2c_client *client, u16 reg, const u8 *val, int len) > +{ > + int ret; > + u8 buf[4]; > + struct i2c_msg msg[1] = { > + { > + .addr = client->addr, > + .flags = 0, > + .len = 2 + len, > + .buf = buf, > + } > + }; > + > + if (2 + len > sizeof(buf)) > + return -EINVAL; > + > + buf[0] = (reg >> 8) & 0xff; > + buf[1] = (reg >> 0) & 0xff; > + memcpy(&buf[2], val, len); > + > + ret = i2c_transfer(client->adapter, msg, 1); > + if (ret < 0) > + return ret; > + else if (ret != 1) > + return -EREMOTEIO; > + else > + return 0; > +} > + > +int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap, > + struct i2c_board_info const *info, int addr_size) > +{ > + client->client = i2c_new_client_device(adap, info); > + if (IS_ERR(client->client)) > + return PTR_ERR(client->client); > + > + client->addr_size = addr_size; > + > + return 0; > +} > + > +void mgb4_i2c_free(struct mgb4_i2c_client *client) > +{ > + i2c_unregister_device(client->client); > +} > + > +s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg) > +{ > + int ret; > + u8 b; > + > + if (client->addr_size == 8) > + return i2c_smbus_read_byte_data(client->client, reg); > + > + ret = read_r16(client->client, reg, &b, 1); > + if (ret < 0) > + return ret; > + > + return (s32)b; > +} > + > +s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val) > +{ > + if (client->addr_size == 8) > + return i2c_smbus_write_byte_data(client->client, reg, val); > + else > + return write_r16(client->client, reg, &val, 1); > +} > + > +s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, u8 val) > +{ > + s32 ret; > + > + if (mask != 0xFF) { > + ret = mgb4_i2c_read_byte(client, reg); > + if (ret < 0) > + return ret; > + val |= (u8)ret & ~mask; > + } > + > + return mgb4_i2c_write_byte(client, reg, val); > +} > + > +int mgb4_i2c_configure(struct mgb4_i2c_client *client, > + const struct mgb4_i2c_kv *values, size_t count) > +{ > + size_t i; > + s32 res; > + > + for (i = 0; i < count; i++) { > + res = mgb4_i2c_mask_byte(client, values[i].reg, values[i].mask, > + values[i].val); > + if (res < 0) > + return res; > + } > + > + return 0; > +} > diff --git a/drivers/media/pci/mgb4/mgb4_i2c.h b/drivers/media/pci/mgb4/mgb4_i2c.h > new file mode 100644 > index 000000000000..fac6a1634474 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_i2c.h > @@ -0,0 +1,35 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_I2C_H__ > +#define __MGB4_I2C_H__ > + > +#include <linux/i2c.h> > + > +struct mgb4_i2c_client { > + struct i2c_client *client; > + int addr_size; > +}; > + > +struct mgb4_i2c_kv { > + u16 reg; > + u8 mask; > + u8 val; > +}; > + > +int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap, > + struct i2c_board_info const *info, int addr_size); > +void mgb4_i2c_free(struct mgb4_i2c_client *client); > + > +s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg); > +s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val); > +s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, > + u8 val); > + > +int mgb4_i2c_configure(struct mgb4_i2c_client *client, > + const struct mgb4_i2c_kv *values, size_t count); > + > +#endif > diff --git a/drivers/media/pci/mgb4/mgb4_io.h b/drivers/media/pci/mgb4/mgb4_io.h > new file mode 100644 > index 000000000000..8698db1be4a9 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_io.h > @@ -0,0 +1,33 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2022 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_IO_H__ > +#define __MGB4_IO_H__ > + > +#include <media/v4l2-dev.h> > + > +#define MGB4_DEFAULT_WIDTH 1280 > +#define MGB4_DEFAULT_HEIGHT 640 > +#define MGB4_DEFAULT_PERIOD (125000000 / 60) > + > +/* Register access error indication */ > +#define MGB4_ERR_NO_REG 0xFFFFFFFE > +/* Frame buffer addresses greater than 0xFFFFFFFA indicate HW errors */ > +#define MGB4_ERR_QUEUE_TIMEOUT 0xFFFFFFFD > +#define MGB4_ERR_QUEUE_EMPTY 0xFFFFFFFC > +#define MGB4_ERR_QUEUE_FULL 0xFFFFFFFB > + > +struct mgb4_frame_buffer { > + struct vb2_v4l2_buffer vb; > + struct list_head list; > +}; > + > +static inline struct mgb4_frame_buffer *to_frame_buffer(struct vb2_v4l2_buffer *vbuf) > +{ > + return container_of(vbuf, struct mgb4_frame_buffer, vb); > +} > + > +#endif > diff --git a/drivers/media/pci/mgb4/mgb4_regs.c b/drivers/media/pci/mgb4/mgb4_regs.c > new file mode 100644 > index 000000000000..53d4e4503a74 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_regs.c > @@ -0,0 +1,30 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2022 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#include <linux/ioport.h> > +#include "mgb4_regs.h" > + > +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs) > +{ > + regs->mapbase = res->start; > + regs->mapsize = res->end - res->start; > + > + if (!request_mem_region(regs->mapbase, regs->mapsize, res->name)) > + return -EINVAL; > + regs->membase = ioremap(regs->mapbase, regs->mapsize); > + if (!regs->membase) { > + release_mem_region(regs->mapbase, regs->mapsize); > + return -EINVAL; > + } > + > + return 0; > +} > + > +void mgb4_regs_free(struct mgb4_regs *regs) > +{ > + iounmap(regs->membase); > + release_mem_region(regs->mapbase, regs->mapsize); > +} > diff --git a/drivers/media/pci/mgb4/mgb4_regs.h b/drivers/media/pci/mgb4/mgb4_regs.h > new file mode 100644 > index 000000000000..c45180890730 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_regs.h > @@ -0,0 +1,35 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2022 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_REGS_H__ > +#define __MGB4_REGS_H__ > + > +#include <linux/io.h> > + > +struct mgb4_regs { > + resource_size_t mapbase; > + resource_size_t mapsize; > + void __iomem *membase; > +}; > + > +#define mgb4_write_reg(regs, offset, val) \ > + iowrite32(val, (regs)->membase + (offset)) > +#define mgb4_read_reg(regs, offset) \ > + ioread32((regs)->membase + (offset)) > + > +static inline void mgb4_mask_reg(struct mgb4_regs *regs, u32 reg, u32 mask, > + u32 val) > +{ > + u32 ret = mgb4_read_reg(regs, reg); > + > + val |= ret & ~mask; > + mgb4_write_reg(regs, reg, val); > +} > + > +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs); > +void mgb4_regs_free(struct mgb4_regs *regs); > + > +#endif > diff --git a/drivers/media/pci/mgb4/mgb4_sysfs.h b/drivers/media/pci/mgb4/mgb4_sysfs.h > new file mode 100644 > index 000000000000..2b42a8ba37f7 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_sysfs.h > @@ -0,0 +1,18 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2022 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_SYSFS_H__ > +#define __MGB4_SYSFS_H__ > + > +#include <linux/sysfs.h> > + > +extern struct device_attribute *mgb4_pci_attrs[]; > +extern struct device_attribute *mgb4_fpdl3_in_attrs[]; > +extern struct device_attribute *mgb4_gmsl_in_attrs[]; > +extern struct device_attribute *mgb4_fpdl3_out_attrs[]; > +extern struct device_attribute *mgb4_gmsl_out_attrs[]; > + > +#endif > diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_in.c b/drivers/media/pci/mgb4/mgb4_sysfs_in.c > new file mode 100644 > index 000000000000..4fe29158521b > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_sysfs_in.c > @@ -0,0 +1,757 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * This module handles all the sysfs info/configuration that is related to the > + * v4l2 input devices. > + */ > + > +#include <linux/device.h> > +#include "mgb4_core.h" > +#include "mgb4_i2c.h" > +#include "mgb4_vin.h" > +#include "mgb4_cmt.h" > +#include "mgb4_sysfs.h" > + > +/* Common for both FPDL3 and GMSL */ > + > +static ssize_t read_input_id(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + > + return sprintf(buf, "%d\n", vindev->config->id); > +} > + > +static ssize_t read_oldi_lane_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + struct mgb4_dev *mgbdev = vindev->mgbdev; > + u16 i2c_reg; > + u8 i2c_mask, i2c_single_val, i2c_dual_val; > + u32 config; > + int ret; > + > + i2c_reg = MGB4_IS_GMSL(mgbdev) ? 0x1CE : 0x49; > + i2c_mask = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x03; > + i2c_single_val = MGB4_IS_GMSL(mgbdev) ? 0x00 : 0x02; > + i2c_dual_val = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x00; > + > + mutex_lock(&mgbdev->i2c_lock); > + ret = mgb4_i2c_read_byte(&vindev->deser, i2c_reg); > + mutex_unlock(&mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + config = mgb4_read_reg(&mgbdev->video, vindev->config->regs.config); > + > + if (((config & (1U << 9)) && ((ret & i2c_mask) != i2c_dual_val)) || > + (!(config & (1U << 9)) && ((ret & i2c_mask) != i2c_single_val))) { > + dev_err(dev, "I2C/FPGA register value mismatch\n"); > + return -EINVAL; > + } > + > + return sprintf(buf, "%s\n", config & (1U << 9) ? "1" : "0"); > +} > + > +static ssize_t write_oldi_lane_width(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + struct mgb4_dev *mgbdev = vindev->mgbdev; > + u32 fpga_data; > + u16 i2c_reg; > + u8 i2c_mask, i2c_data; > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + > + switch (val) { > + case 0: /* single */ > + fpga_data = 0; > + i2c_data = MGB4_IS_GMSL(mgbdev) ? 0x00 : 0x02; > + break; > + case 1: /* dual */ > + fpga_data = 1U << 9; > + i2c_data = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x00; > + break; > + default: > + return -EINVAL; > + } > + > + i2c_reg = MGB4_IS_GMSL(mgbdev) ? 0x1CE : 0x49; > + i2c_mask = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x03; > + > + mutex_lock(&mgbdev->i2c_lock); > + ret = mgb4_i2c_mask_byte(&vindev->deser, i2c_reg, i2c_mask, i2c_data); > + mutex_unlock(&mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + mgb4_mask_reg(&mgbdev->video, vindev->config->regs.config, 1U << 9, > + fpga_data); > + if (MGB4_IS_GMSL(mgbdev)) { > + /* reset input link */ > + mutex_lock(&mgbdev->i2c_lock); > + ret = mgb4_i2c_mask_byte(&vindev->deser, 0x10, 1U << 5, 1U << 5); > + mutex_unlock(&mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + } > + > + return count; > +} > + > +static ssize_t read_color_mapping(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.config); > + > + return sprintf(buf, "%s\n", config & (1U << 8) ? "0" : "1"); > +} > + > +static ssize_t write_color_mapping(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 fpga_data; > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + > + switch (val) { > + case 0: /* OLDI/JEIDA */ > + fpga_data = (1U << 8); > + break; > + case 1: /* SPWG/VESA */ > + fpga_data = 0; > + break; > + default: > + return -EINVAL; > + } > + > + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, > + 1U << 8, fpga_data); > + > + return count; > +} > + > +static ssize_t read_link_status(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 status = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.status); > + > + return sprintf(buf, "%s\n", status & (1U << 2) ? "1" : "0"); > +} > + > +static ssize_t read_stream_status(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 status = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.status); > + > + return sprintf(buf, "%s\n", ((status & (1 << 14)) && > + (status & (1 << 2)) && (status & (3 << 9))) ? "1" : "0"); > +} > + > +static ssize_t read_video_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.resolution); > + > + return sprintf(buf, "%u\n", config >> 16); > +} > + > +static ssize_t read_video_height(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.resolution); > + > + return sprintf(buf, "%u\n", config & 0xFFFF); > +} > + > +static ssize_t read_hsync_status(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 status = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.status); > + u32 res; > + > + if (!(status & (1U << 11))) > + res = 0x02; // not available > + else if (status & (1U << 12)) > + res = 0x01; // active high > + else > + res = 0x00; // active low > + > + return sprintf(buf, "%u\n", res); > +} > + > +static ssize_t read_vsync_status(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 status = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.status); > + u32 res; > + > + if (!(status & (1U << 11))) > + res = 0x02; // not available > + else if (status & (1U << 13)) > + res = 0x01; // active high > + else > + res = 0x00; // active low > + > + return sprintf(buf, "%u\n", res); > +} > + > +static ssize_t read_hsync_gap(struct device *dev, struct device_attribute *attr, > + char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 sync = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.sync); > + > + return sprintf(buf, "%u\n", sync >> 16); > +} > + > +static ssize_t write_hsync_gap(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFFFF) > + return -EINVAL; > + > + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, > + 0xFFFF0000, val << 16); > + > + return count; > +} > + > +static ssize_t read_vsync_gap(struct device *dev, struct device_attribute *attr, > + char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 sync = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.sync); > + > + return sprintf(buf, "%u\n", sync & 0xFFFF); > +} > + > +static ssize_t write_vsync_gap(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFFFF) > + return -EINVAL; > + > + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, 0xFFFF, > + val); > + > + return count; > +} > + > +static ssize_t read_pclk_frequency(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 freq = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.pclk); > + > + return sprintf(buf, "%u\n", freq); > +} > + > +static ssize_t read_hsync_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.signal); > + > + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); > +} > + > +static ssize_t read_vsync_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.signal2); > + > + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); > +} > + > +static ssize_t read_hback_porch(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.signal); > + > + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); > +} > + > +static ssize_t read_hfront_porch(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.signal); > + > + return sprintf(buf, "%u\n", (sig & 0x000000FF)); > +} > + > +static ssize_t read_vback_porch(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.signal2); > + > + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); > +} > + > +static ssize_t read_vfront_porch(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, > + vindev->config->regs.signal2); > + > + return sprintf(buf, "%u\n", (sig & 0x000000FF)); > +} > + > +static ssize_t read_frequency_range(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + > + return sprintf(buf, "%d\n", vindev->freq_range); > +} > + > +static ssize_t write_frequency_range(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + unsigned long val, flags; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 1) > + return -EINVAL; > + > + spin_lock_irqsave(&vindev->vdev.fh_lock, flags); > + if (!list_empty(&vindev->vdev.fh_list)) { > + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); > + return -EBUSY; > + } > + > + mgb4_cmt_set_vin_freq_range(vindev, val); > + vindev->freq_range = val; > + > + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); > + > + return count; > +} > + > +/* FPDL3 only */ > + > +static ssize_t read_fpdl3_input_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + s32 ret; > + > + mutex_lock(&vindev->mgbdev->i2c_lock); > + ret = mgb4_i2c_read_byte(&vindev->deser, 0x34); > + mutex_unlock(&vindev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + switch ((u8)ret & 0x18) { > + case 0: > + return sprintf(buf, "0\n"); > + case 0x10: > + return sprintf(buf, "1\n"); > + case 0x08: > + return sprintf(buf, "2\n"); > + default: > + return -EINVAL; > + } > +} > + > +static ssize_t write_fpdl3_input_width(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + u8 i2c_data; > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + > + switch (val) { > + case 0: /* auto */ > + i2c_data = 0x00; > + break; > + case 1: /* single */ > + i2c_data = 0x10; > + break; > + case 2: /* dual */ > + i2c_data = 0x08; > + break; > + default: > + return -EINVAL; > + } > + > + mutex_lock(&vindev->mgbdev->i2c_lock); > + ret = mgb4_i2c_mask_byte(&vindev->deser, 0x34, 0x18, i2c_data); > + mutex_unlock(&vindev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + return count; > +} > + > +/* GMSL only */ > + > +static ssize_t read_gmsl_mode(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + s32 r1, r300, r3; > + > + mutex_lock(&vindev->mgbdev->i2c_lock); > + r1 = mgb4_i2c_read_byte(&vindev->deser, 0x01); > + r300 = mgb4_i2c_read_byte(&vindev->deser, 0x300); > + r3 = mgb4_i2c_read_byte(&vindev->deser, 0x03); > + mutex_unlock(&vindev->mgbdev->i2c_lock); > + if (r1 < 0 || r300 < 0 || r3 < 0) > + return -EIO; > + > + if ((r1 & 0x03) == 0x03 && (r300 & 0x0C) == 0x0C && (r3 & 0xC0) == 0xC0) > + return sprintf(buf, "0\n"); > + else if ((r1 & 0x03) == 0x02 && (r300 & 0x0C) == 0x08 && (r3 & 0xC0) == 0x00) > + return sprintf(buf, "1\n"); > + else if ((r1 & 0x03) == 0x01 && (r300 & 0x0C) == 0x04 && (r3 & 0xC0) == 0x00) > + return sprintf(buf, "2\n"); > + else if ((r1 & 0x03) == 0x00 && (r300 & 0x0C) == 0x00 && (r3 & 0xC0) == 0x00) > + return sprintf(buf, "3\n"); > + else > + return -EINVAL; > +} > + > +static ssize_t write_gmsl_mode(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + static const struct mgb4_i2c_kv G12[] = { > + {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}}; > + static const struct mgb4_i2c_kv G6[] = { > + {0x01, 0x03, 0x02}, {0x300, 0x0C, 0x08}, {0x03, 0xC0, 0x00}}; > + static const struct mgb4_i2c_kv G3[] = { > + {0x01, 0x03, 0x01}, {0x300, 0x0C, 0x04}, {0x03, 0xC0, 0x00}}; > + static const struct mgb4_i2c_kv G1[] = { > + {0x01, 0x03, 0x00}, {0x300, 0x0C, 0x00}, {0x03, 0xC0, 0x00}}; > + static const struct mgb4_i2c_kv reset[] = { > + {0x10, 1U << 5, 1U << 5}, {0x300, 1U << 6, 1U << 6}}; > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + const struct mgb4_i2c_kv *values; > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + > + switch (val) { > + case 0: /* 12Gb/s */ > + values = G12; > + break; > + case 1: /* 6Gb/s */ > + values = G6; > + break; > + case 2: /* 3Gb/s */ > + values = G3; > + break; > + case 3: /* 1.5Gb/s */ > + values = G1; > + break; > + default: > + return -EINVAL; > + } > + > + mutex_lock(&vindev->mgbdev->i2c_lock); > + ret = mgb4_i2c_configure(&vindev->deser, values, 3); > + ret |= mgb4_i2c_configure(&vindev->deser, reset, 2); > + mutex_unlock(&vindev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + return count; > +} > + > +static ssize_t read_gmsl_stream_id(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + s32 ret; > + > + mutex_lock(&vindev->mgbdev->i2c_lock); > + ret = mgb4_i2c_read_byte(&vindev->deser, 0xA0); > + mutex_unlock(&vindev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + return sprintf(buf, "%d\n", ret & 0x03); > +} > + > +static ssize_t write_gmsl_stream_id(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + unsigned long val, flags; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 3) > + return -EINVAL; > + > + spin_lock_irqsave(&vindev->vdev.fh_lock, flags); > + ret = list_empty(&vindev->vdev.fh_list); > + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); > + if (!ret) > + return -EBUSY; > + > + /* Formaly, there is a race condition here as the change should also be > + * done under the spinlock above, but we only want to prevent > + * a resolution change while the device is in use. However, resolution > + * changes can happen anyway and the driver can handle them (they only > + * break the image, not the system). > + * > + * So instead of trying to workaround the spinlock - mgb4_i2c_mask_byte() > + * does sleep - we simply let the rare race condition happen... > + */ > + mutex_lock(&vindev->mgbdev->i2c_lock); > + ret = mgb4_i2c_mask_byte(&vindev->deser, 0xA0, 0x03, (u8)val); > + mutex_unlock(&vindev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + return count; > +} > + > +static ssize_t read_gmsl_fec(struct device *dev, struct device_attribute *attr, > + char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + s32 r3e0, r308; > + > + mutex_lock(&vindev->mgbdev->i2c_lock); > + r3e0 = mgb4_i2c_read_byte(&vindev->deser, 0x3E0); > + r308 = mgb4_i2c_read_byte(&vindev->deser, 0x308); > + mutex_unlock(&vindev->mgbdev->i2c_lock); > + if (r3e0 < 0 || r308 < 0) > + return -EIO; > + > + if ((r3e0 & 0x07) == 0x00 && (r308 & 0x01) == 0x00) > + return sprintf(buf, "0\n"); > + else if ((r3e0 & 0x07) == 0x07 && (r308 & 0x01) == 0x01) > + return sprintf(buf, "1\n"); > + else > + return -EINVAL; > +} > + > +static ssize_t write_gmsl_fec(struct device *dev, struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); > + static const struct mgb4_i2c_kv enable[] = { > + {0x3E0, 0x07, 0x07}, {0x308, 0x01, 0x01}}; > + static const struct mgb4_i2c_kv disable[] = { > + {0x3E0, 0x07, 0x00}, {0x308, 0x01, 0x00}}; > + static const struct mgb4_i2c_kv reset[] = { > + {0x10, 1U << 5, 1U << 5}, {0x300, 1U << 6, 1U << 6}}; > + const struct mgb4_i2c_kv *values; > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + > + switch (val) { > + case 0: /* disabled */ > + values = disable; > + break; > + case 1: /* enabled */ > + values = enable; > + break; > + default: > + return -EINVAL; > + } > + > + mutex_lock(&vindev->mgbdev->i2c_lock); > + ret = mgb4_i2c_configure(&vindev->deser, values, 2); > + ret |= mgb4_i2c_configure(&vindev->deser, reset, 2); > + mutex_unlock(&vindev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + return count; > +} > + > +static DEVICE_ATTR(input_id, 0444, read_input_id, NULL); > +static DEVICE_ATTR(oldi_lane_width, 0644, read_oldi_lane_width, > + write_oldi_lane_width); > +static DEVICE_ATTR(color_mapping, 0644, read_color_mapping, > + write_color_mapping); > +static DEVICE_ATTR(link_status, 0444, read_link_status, NULL); > +static DEVICE_ATTR(stream_status, 0444, read_stream_status, NULL); > +static DEVICE_ATTR(video_width, 0444, read_video_width, NULL); > +static DEVICE_ATTR(video_height, 0444, read_video_height, NULL); > +static DEVICE_ATTR(hsync_status, 0444, read_hsync_status, NULL); > +static DEVICE_ATTR(vsync_status, 0444, read_vsync_status, NULL); > +static DEVICE_ATTR(hsync_gap_length, 0644, read_hsync_gap, write_hsync_gap); > +static DEVICE_ATTR(vsync_gap_length, 0644, read_vsync_gap, write_vsync_gap); > +static DEVICE_ATTR(pclk_frequency, 0444, read_pclk_frequency, NULL); > +static DEVICE_ATTR(hsync_width, 0444, read_hsync_width, NULL); > +static DEVICE_ATTR(vsync_width, 0444, read_vsync_width, NULL); > +static DEVICE_ATTR(hback_porch, 0444, read_hback_porch, NULL); > +static DEVICE_ATTR(hfront_porch, 0444, read_hfront_porch, NULL); > +static DEVICE_ATTR(vback_porch, 0444, read_vback_porch, NULL); > +static DEVICE_ATTR(vfront_porch, 0444, read_vfront_porch, NULL); > +static DEVICE_ATTR(frequency_range, 0644, read_frequency_range, > + write_frequency_range); > + > +static DEVICE_ATTR(fpdl3_input_width, 0644, read_fpdl3_input_width, > + write_fpdl3_input_width); > + > +static DEVICE_ATTR(gmsl_mode, 0644, read_gmsl_mode, write_gmsl_mode); > +static DEVICE_ATTR(gmsl_stream_id, 0644, read_gmsl_stream_id, > + write_gmsl_stream_id); > +static DEVICE_ATTR(gmsl_fec, 0644, read_gmsl_fec, write_gmsl_fec); Use DEVICE_ATTR_RO/RW instead. This also ties into the checkpatch warnings regarding the naming. > + > +struct device_attribute *mgb4_fpdl3_in_attrs[] = { > + &dev_attr_input_id, > + &dev_attr_link_status, > + &dev_attr_stream_status, > + &dev_attr_video_width, > + &dev_attr_video_height, > + &dev_attr_hsync_status, > + &dev_attr_vsync_status, > + &dev_attr_oldi_lane_width, > + &dev_attr_color_mapping, > + &dev_attr_hsync_gap_length, > + &dev_attr_vsync_gap_length, > + &dev_attr_pclk_frequency, > + &dev_attr_hsync_width, > + &dev_attr_vsync_width, > + &dev_attr_hback_porch, > + &dev_attr_hfront_porch, > + &dev_attr_vback_porch, > + &dev_attr_vfront_porch, > + &dev_attr_frequency_range, > + &dev_attr_fpdl3_input_width, > + NULL > +}; > + > +struct device_attribute *mgb4_gmsl_in_attrs[] = { > + &dev_attr_input_id, > + &dev_attr_link_status, > + &dev_attr_stream_status, > + &dev_attr_video_width, > + &dev_attr_video_height, > + &dev_attr_hsync_status, > + &dev_attr_vsync_status, > + &dev_attr_oldi_lane_width, > + &dev_attr_color_mapping, > + &dev_attr_hsync_gap_length, > + &dev_attr_vsync_gap_length, > + &dev_attr_pclk_frequency, > + &dev_attr_hsync_width, > + &dev_attr_vsync_width, > + &dev_attr_hback_porch, > + &dev_attr_hfront_porch, > + &dev_attr_vback_porch, > + &dev_attr_vfront_porch, > + &dev_attr_frequency_range, > + &dev_attr_gmsl_mode, > + &dev_attr_gmsl_stream_id, > + &dev_attr_gmsl_fec, > + NULL > +}; > diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_out.c b/drivers/media/pci/mgb4/mgb4_sysfs_out.c > new file mode 100644 > index 000000000000..243a654f75ad > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_sysfs_out.c > @@ -0,0 +1,700 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * This module handles all the sysfs info/configuration that is related to the > + * v4l2 output devices. > + */ > + > +#include <linux/device.h> > +#include "mgb4_core.h" > +#include "mgb4_i2c.h" > +#include "mgb4_vout.h" > +#include "mgb4_vin.h" > +#include "mgb4_cmt.h" > +#include "mgb4_sysfs.h" > + > +static int loopin_cnt(struct mgb4_vin_dev *vindev) > +{ > + struct mgb4_vout_dev *voutdev; > + u32 config; > + int i, cnt = 0; > + > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { > + voutdev = vindev->mgbdev->vout[i]; > + if (!voutdev) > + continue; > + > + config = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.config); > + if ((config & 0xc) >> 2 == vindev->config->id) > + cnt++; > + } > + > + return cnt; > +} > + > +/* Common for both FPDL3 and GMSL */ > + > +static ssize_t read_output_id(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + > + return sprintf(buf, "%d\n", voutdev->config->id); > +} > + > +static ssize_t read_video_source(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.config); > + > + return sprintf(buf, "%u\n", (config & 0xc) >> 2); > +} > + > +static ssize_t write_video_source(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + struct mgb4_dev *mgbdev = voutdev->mgbdev; > + struct mgb4_vin_dev *loopin_new = 0, *loopin_old = 0; > + unsigned long val; > + unsigned long flags_in[MGB4_VIN_DEVICES], flags_out[MGB4_VOUT_DEVICES]; > + ssize_t ret; > + u32 config; > + int i; > + > + memset(flags_in, 0, sizeof(flags_in)); > + memset(flags_out, 0, sizeof(flags_out)); > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 3) > + return -EINVAL; > + > + for (i = 0; i < MGB4_VIN_DEVICES; i++) > + if (mgbdev->vin[i]) > + spin_lock_irqsave(&mgbdev->vin[i]->vdev.fh_lock, > + flags_in[i]); > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) > + if (mgbdev->vout[i]) > + spin_lock_irqsave(&mgbdev->vout[i]->vdev.fh_lock, > + flags_out[i]); > + > + ret = -EBUSY; > + for (i = 0; i < MGB4_VIN_DEVICES; i++) > + if (mgbdev->vin[i] && !list_empty(&mgbdev->vin[i]->vdev.fh_list)) > + goto error; > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) > + if (mgbdev->vout[i] && !list_empty(&mgbdev->vout[i]->vdev.fh_list)) > + goto error; > + > + config = mgb4_read_reg(&mgbdev->video, voutdev->config->regs.config); > + > + if (((config & 0xc) >> 2) < MGB4_VIN_DEVICES) > + loopin_old = mgbdev->vin[(config & 0xc) >> 2]; > + if (val < MGB4_VIN_DEVICES) > + loopin_new = mgbdev->vin[val]; > + if (loopin_old && loopin_cnt(loopin_old) == 1) > + mgb4_mask_reg(&mgbdev->video, loopin_old->config->regs.config, > + 0x2, 0x0); > + if (loopin_new) > + mgb4_mask_reg(&mgbdev->video, loopin_new->config->regs.config, > + 0x2, 0x2); > + > + if (val == voutdev->config->id + MGB4_VIN_DEVICES) > + mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config, > + config & ~(1 << 1)); > + else > + mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config, > + config | (1U << 1)); > + > + mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0xc, > + val << 2); > + > + ret = count; > + > +error: > + for (i = MGB4_VOUT_DEVICES - 1; i >= 0; i--) > + if (mgbdev->vout[i]) > + spin_unlock_irqrestore(&mgbdev->vout[i]->vdev.fh_lock, > + flags_out[i]); > + for (i = MGB4_VIN_DEVICES - 1; i >= 0; i--) > + if (mgbdev->vin[i]) > + spin_unlock_irqrestore(&mgbdev->vin[i]->vdev.fh_lock, > + flags_in[i]); > + > + return ret; > +} > + > +static ssize_t read_display_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.resolution); > + > + return sprintf(buf, "%u\n", config >> 16); > +} > + > +static ssize_t write_display_width(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val, flags; > + int ret, busy; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFFFF) > + return -EINVAL; > + > + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); > + busy = !list_empty(&voutdev->vdev.fh_list); > + if (busy) { > + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); > + return -EBUSY; > + } > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution, > + 0xFFFF0000, val << 16); > + > + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); > + > + return count; > +} > + > +static ssize_t read_display_height(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.resolution); > + > + return sprintf(buf, "%u\n", config & 0xFFFF); > +} > + > +static ssize_t write_display_height(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val, flags; > + int ret, busy; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFFFF) > + return -EINVAL; > + > + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); > + busy = !list_empty(&voutdev->vdev.fh_list); > + if (busy) { > + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); > + return -EBUSY; > + } > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution, > + 0xFFFF, val); > + > + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); > + > + return count; > +} > + > +static ssize_t read_frame_rate(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 period = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.frame_period); > + > + return sprintf(buf, "%u\n", 125000000 / period); > +} > + > +static ssize_t write_frame_rate(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + > + mgb4_write_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.frame_period, 125000000 / val); > + > + return count; > +} > + > +static ssize_t read_hsync_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.hsync); > + > + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); > +} > + > +static ssize_t write_hsync_width(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFF) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, > + 0x00FF0000, val << 16); > + > + return count; > +} > + > +static ssize_t read_vsync_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.vsync); > + > + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); > +} > + > +static ssize_t write_vsync_width(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFF) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, > + 0x00FF0000, val << 16); > + > + return count; > +} > + > +static ssize_t read_hback_porch(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.hsync); > + > + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); > +} > + > +static ssize_t write_hback_porch(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFF) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, > + 0x0000FF00, val << 8); > + > + return count; > +} > + > +static ssize_t read_vback_porch(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.vsync); > + > + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); > +} > + > +static ssize_t write_vback_porch(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFF) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, > + 0x0000FF00, val << 8); > + > + return count; > +} > + > +static ssize_t read_hfront_porch(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.hsync); > + > + return sprintf(buf, "%u\n", (sig & 0x000000FF)); > +} > + > +static ssize_t write_hfront_porch(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFF) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, > + 0x000000FF, val); > + > + return count; > +} > + > +static ssize_t read_vfront_porch(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.vsync); > + > + return sprintf(buf, "%u\n", (sig & 0x000000FF)); > +} > + > +static ssize_t write_vfront_porch(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 0xFF) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, > + 0x000000FF, val); > + > + return count; > +} > + > +/* FPDL3 only */ > + > +static ssize_t read_hsync_polarity(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.hsync); > + > + return sprintf(buf, "%u\n", (config & (1U << 31)) >> 31); > +} > + > +static ssize_t write_hsync_polarity(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 1) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, > + (1U << 31), val << 31); > + > + return count; > +} > + > +static ssize_t read_vsync_polarity(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.vsync); > + > + return sprintf(buf, "%u\n", (config & (1U << 31)) >> 31); > +} > + > +static ssize_t write_vsync_polarity(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 1) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, > + (1U << 31), val << 31); > + > + return count; > +} > + > +static ssize_t read_de_polarity(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.vsync); > + > + return sprintf(buf, "%u\n", (config & (1U << 30)) >> 30); > +} > + > +static ssize_t write_de_polarity(struct device *dev, > + struct device_attribute *attr, const char *buf, > + size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + if (val > 1) > + return -EINVAL; > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, > + (1U << 30), val << 30); > + > + return count; > +} > + > +static ssize_t read_fpdl3_output_width(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + s32 ret; > + > + mutex_lock(&voutdev->mgbdev->i2c_lock); > + ret = mgb4_i2c_read_byte(&voutdev->ser, 0x5B); > + mutex_unlock(&voutdev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + switch ((u8)ret & 0x03) { > + case 0: > + return sprintf(buf, "0\n"); > + case 1: > + return sprintf(buf, "1\n"); > + case 3: > + return sprintf(buf, "2\n"); > + default: > + return -EINVAL; > + } > +} > + > +static ssize_t write_fpdl3_output_width(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + u8 i2c_data; > + unsigned long val; > + int ret; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + > + switch (val) { > + case 0: /* auto */ > + i2c_data = 0x00; > + break; > + case 1: /* single */ > + i2c_data = 0x01; > + break; > + case 2: /* dual */ > + i2c_data = 0x03; > + break; > + default: > + return -EINVAL; > + } > + > + mutex_lock(&voutdev->mgbdev->i2c_lock); > + ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x5B, 0x03, i2c_data); > + mutex_unlock(&voutdev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + return count; > +} > + > +static ssize_t read_pclk_frequency(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + > + return sprintf(buf, "%u\n", voutdev->freq); > +} > + > +static ssize_t write_pclk_frequency(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct video_device *vdev = to_video_device(dev); > + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); > + unsigned long val, flags; > + int ret, busy; > + unsigned int dp; > + > + ret = kstrtoul(buf, 10, &val); > + if (ret) > + return ret; > + > + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); > + busy = !list_empty(&voutdev->vdev.fh_list); > + if (busy) { > + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); > + return -EBUSY; > + } > + > + dp = (val > 50000) ? 1 : 0; > + voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, val >> dp) << dp; > + > + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); > + > + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, > + 0x10, dp << 4); > + mutex_lock(&voutdev->mgbdev->i2c_lock); > + ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x4F, 1 << 6, ((~dp) & 1) << 6); > + mutex_unlock(&voutdev->mgbdev->i2c_lock); > + if (ret < 0) > + return -EIO; > + > + return count; > +} > + > +static DEVICE_ATTR(output_id, 0444, read_output_id, NULL); > +static DEVICE_ATTR(video_source, 0644, read_video_source, write_video_source); > +static DEVICE_ATTR(display_width, 0644, read_display_width, > + write_display_width); > +static DEVICE_ATTR(display_height, 0644, read_display_height, > + write_display_height); > +static DEVICE_ATTR(frame_rate, 0644, read_frame_rate, write_frame_rate); > +static DEVICE_ATTR(hsync_polarity, 0644, read_hsync_polarity, > + write_hsync_polarity); > +static DEVICE_ATTR(vsync_polarity, 0644, read_vsync_polarity, > + write_vsync_polarity); > +static DEVICE_ATTR(de_polarity, 0644, read_de_polarity, > + write_de_polarity); > +static DEVICE_ATTR(pclk_frequency, 0644, read_pclk_frequency, > + write_pclk_frequency); > +static DEVICE_ATTR(hsync_width, 0644, read_hsync_width, write_hsync_width); > +static DEVICE_ATTR(vsync_width, 0644, read_vsync_width, write_vsync_width); > +static DEVICE_ATTR(hback_porch, 0644, read_hback_porch, write_hback_porch); > +static DEVICE_ATTR(hfront_porch, 0644, read_hfront_porch, write_hfront_porch); > +static DEVICE_ATTR(vback_porch, 0644, read_vback_porch, write_vback_porch); > +static DEVICE_ATTR(vfront_porch, 0644, read_vfront_porch, write_vfront_porch); > + > +static DEVICE_ATTR(fpdl3_output_width, 0644, read_fpdl3_output_width, > + write_fpdl3_output_width); Same here. > + > +struct device_attribute *mgb4_fpdl3_out_attrs[] = { > + &dev_attr_output_id, > + &dev_attr_video_source, > + &dev_attr_display_width, > + &dev_attr_display_height, > + &dev_attr_frame_rate, > + &dev_attr_hsync_polarity, > + &dev_attr_vsync_polarity, > + &dev_attr_de_polarity, > + &dev_attr_pclk_frequency, > + &dev_attr_hsync_width, > + &dev_attr_vsync_width, > + &dev_attr_hback_porch, > + &dev_attr_hfront_porch, > + &dev_attr_vback_porch, > + &dev_attr_vfront_porch, > + &dev_attr_fpdl3_output_width, > + NULL > +}; > + > +struct device_attribute *mgb4_gmsl_out_attrs[] = { > + &dev_attr_output_id, > + &dev_attr_video_source, > + &dev_attr_display_width, > + &dev_attr_display_height, > + &dev_attr_frame_rate, > + NULL > +}; > diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_pci.c b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c > new file mode 100644 > index 000000000000..f98da2c5f180 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c > @@ -0,0 +1,71 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2022 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * This module handles all the sysfs info/configuration that is related to the > + * PCI card device. > + */ > + > +#include <linux/device.h> > +#include "mgb4_core.h" > +#include "mgb4_sysfs.h" > + > +static ssize_t read_module_version(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); > + > + return sprintf(buf, "%u\n", mgbdev->module_version & 0x0F); > +} > + > +static ssize_t read_module_type(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); > + > + return sprintf(buf, "%u\n", mgbdev->module_version >> 4); > +} > + > +static ssize_t read_fw_version(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); > + u32 config = mgb4_read_reg(&mgbdev->video, 0xC4); > + > + return sprintf(buf, "%u\n", config & 0xFFFF); > +} > + > +static ssize_t read_fw_type(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); > + u32 config = mgb4_read_reg(&mgbdev->video, 0xC4); > + > + return sprintf(buf, "%u\n", config >> 24); > +} > + > +static ssize_t read_serial_number(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); > + u32 sn = mgbdev->serial_number; > + > + return sprintf(buf, "%03d-%03d-%03d-%03d\n", sn >> 24, (sn >> 16) & 0xFF, > + (sn >> 8) & 0xFF, sn & 0xFF); > +} > + > +static DEVICE_ATTR(module_version, 0444, read_module_version, NULL); > +static DEVICE_ATTR(module_type, 0444, read_module_type, NULL); > +static DEVICE_ATTR(fw_version, 0444, read_fw_version, NULL); > +static DEVICE_ATTR(fw_type, 0444, read_fw_type, NULL); > +static DEVICE_ATTR(serial_number, 0444, read_serial_number, NULL); And here. > + > +struct device_attribute *mgb4_pci_attrs[] = { > + &dev_attr_module_type, > + &dev_attr_module_version, > + &dev_attr_fw_type, > + &dev_attr_fw_version, > + &dev_attr_serial_number, > + NULL > +}; > diff --git a/drivers/media/pci/mgb4/mgb4_trigger.c b/drivers/media/pci/mgb4/mgb4_trigger.c > new file mode 100644 > index 000000000000..923650d53d4c > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_trigger.c > @@ -0,0 +1,208 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * This module handles the IIO trigger device. The card has two signal inputs > + * for event triggers that can be used to record events related to the video > + * stream. A standard linux IIO device with triggered buffer capability is > + * created and configured that can be used to fetch the events with the same > + * clock source as the video frames. > + */ > + > +#include <linux/iio/iio.h> > +#include <linux/iio/buffer.h> > +#include <linux/iio/trigger.h> > +#include <linux/iio/trigger_consumer.h> > +#include <linux/iio/triggered_buffer.h> > +#include <linux/pci.h> > +#include <linux/dma/amd_xdma.h> > +#include "mgb4_core.h" > +#include "mgb4_trigger.h" > + > +struct trigger_data { > + struct mgb4_dev *mgbdev; > + struct iio_trigger *trig; > +}; > + > +static int trigger_read_raw(struct iio_dev *indio_dev, > + struct iio_chan_spec const *chan, int *val, > + int *val2, long mask) > +{ > + struct trigger_data *st = iio_priv(indio_dev); > + > + switch (mask) { > + case IIO_CHAN_INFO_RAW: > + if (iio_buffer_enabled(indio_dev)) > + return -EBUSY; > + *val = mgb4_read_reg(&st->mgbdev->video, 0xA0); > + > + return IIO_VAL_INT; > + } > + > + return -EINVAL; > +} > + > +static int trigger_set_state(struct iio_trigger *trig, bool state) > +{ > + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); > + struct trigger_data *st = iio_priv(indio_dev); > + int irq = xdma_get_user_irq(st->mgbdev->xdev, 11); > + > + if (state) > + xdma_enable_user_irq(st->mgbdev->xdev, irq); > + else > + xdma_disable_user_irq(st->mgbdev->xdev, irq); > + > + return 0; > +} > + > +static const struct iio_trigger_ops trigger_ops = { > + .set_trigger_state = &trigger_set_state, > +}; > + > +static const struct iio_info trigger_info = { > + .read_raw = trigger_read_raw, > +}; > + > +#define TRIGGER_CHANNEL(_si) { \ > + .type = IIO_ACTIVITY, \ > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ > + .scan_index = _si, \ > + .scan_type = { \ > + .sign = 'u', \ > + .realbits = 32, \ > + .storagebits = 32, \ > + .shift = 0, \ > + .endianness = IIO_CPU \ > + }, \ > +} > + > +static const struct iio_chan_spec trigger_channels[] = { > + TRIGGER_CHANNEL(0), > + IIO_CHAN_SOFT_TIMESTAMP(1), > +}; > + > +static irqreturn_t trigger_handler(int irq, void *p) > +{ > + struct iio_poll_func *pf = p; > + struct iio_dev *indio_dev = pf->indio_dev; > + struct trigger_data *st = iio_priv(indio_dev); > + struct { > + u32 data; > + s64 ts __aligned(8); > + } scan; > + > + scan.data = mgb4_read_reg(&st->mgbdev->video, 0xA0); > + mgb4_write_reg(&st->mgbdev->video, 0xA0, scan.data); > + > + iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp); > + iio_trigger_notify_done(indio_dev->trig); > + > + mgb4_write_reg(&st->mgbdev->video, 0xB4, 1U << 11); > + > + return IRQ_HANDLED; > +} > + > +static int probe_trigger(struct iio_dev *indio_dev, int irq) > +{ > + int ret; > + struct trigger_data *st = iio_priv(indio_dev); > + > + st->trig = iio_trigger_alloc(&st->mgbdev->pdev->dev, "%s-dev%d", > + indio_dev->name, iio_device_id(indio_dev)); > + if (!st->trig) > + return -ENOMEM; > + > + ret = request_irq(irq, &iio_trigger_generic_data_rdy_poll, 0, > + "mgb4-trigger", st->trig); > + if (ret) > + goto error_free_trig; > + > + st->trig->ops = &trigger_ops; > + iio_trigger_set_drvdata(st->trig, indio_dev); > + ret = iio_trigger_register(st->trig); > + if (ret) > + goto error_free_irq; > + > + indio_dev->trig = iio_trigger_get(st->trig); > + > + return 0; > + > +error_free_irq: > + free_irq(irq, st->trig); > +error_free_trig: > + iio_trigger_free(st->trig); > + > + return ret; > +} > + > +static void remove_trigger(struct iio_dev *indio_dev, int irq) > +{ > + struct trigger_data *st = iio_priv(indio_dev); > + > + iio_trigger_unregister(st->trig); > + free_irq(irq, st->trig); > + iio_trigger_free(st->trig); > +} > + > +struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev) > +{ > + struct iio_dev *indio_dev; > + struct trigger_data *data; > + struct pci_dev *pdev = mgbdev->pdev; > + struct device *dev = &pdev->dev; > + int rv, irq; > + > + indio_dev = iio_device_alloc(dev, sizeof(*data)); > + if (!indio_dev) > + return NULL; > + > + indio_dev->info = &trigger_info; > + indio_dev->name = "mgb4"; > + indio_dev->modes = INDIO_DIRECT_MODE; > + indio_dev->channels = trigger_channels; > + indio_dev->num_channels = ARRAY_SIZE(trigger_channels); > + > + data = iio_priv(indio_dev); > + data->mgbdev = mgbdev; > + > + irq = xdma_get_user_irq(mgbdev->xdev, 11); > + rv = probe_trigger(indio_dev, irq); > + if (rv < 0) { > + dev_err(dev, "iio triggered setup failed\n"); > + goto error_alloc; > + } > + rv = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, > + trigger_handler, NULL); > + if (rv < 0) { > + dev_err(dev, "iio triggered buffer setup failed\n"); > + goto error_trigger; > + } > + rv = iio_device_register(indio_dev); > + if (rv < 0) { > + dev_err(dev, "iio device register failed\n"); > + goto error_buffer; > + } > + > + return indio_dev; > + > +error_buffer: > + iio_triggered_buffer_cleanup(indio_dev); > +error_trigger: > + remove_trigger(indio_dev, irq); > +error_alloc: > + iio_device_free(indio_dev); > + > + return NULL; > +} > + > +void mgb4_trigger_free(struct iio_dev *indio_dev) > +{ > + struct trigger_data *st = iio_priv(indio_dev); > + > + iio_device_unregister(indio_dev); > + iio_triggered_buffer_cleanup(indio_dev); > + remove_trigger(indio_dev, xdma_get_user_irq(st->mgbdev->xdev, 11)); > + iio_device_free(indio_dev); > +} > diff --git a/drivers/media/pci/mgb4/mgb4_trigger.h b/drivers/media/pci/mgb4/mgb4_trigger.h > new file mode 100644 > index 000000000000..6c25bc4576f6 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_trigger.h > @@ -0,0 +1,8 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2022 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev); > +void mgb4_trigger_free(struct iio_dev *indio_dev); > diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c > new file mode 100644 > index 000000000000..4712e966595a > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_vin.c > @@ -0,0 +1,930 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * This is the v4l2 input device module. It initializes the signal deserializers > + * and creates the v4l2 video devices. The input signal can change at any time > + * which is handled by the "timings" callbacks and an IRQ based watcher, that > + * emits the V4L2_EVENT_SOURCE_CHANGE event in case of a signal source change. > + * > + * When the device is in loopback mode (a direct, in HW, in->out frame passing > + * mode) the card's frame queue must be running regardless of whether a v4l2 > + * stream is running and the output parameters like frame buffers padding must > + * be in sync with the input parameters. > + */ > + > +#include <linux/pci.h> > +#include <linux/workqueue.h> > +#include <linux/align.h> > +#include <linux/dma/amd_xdma.h> > +#include <media/v4l2-ioctl.h> > +#include <media/videobuf2-v4l2.h> > +#include <media/videobuf2-dma-sg.h> > +#include <media/v4l2-dv-timings.h> > +#include <media/v4l2-event.h> > +#include "mgb4_core.h" > +#include "mgb4_dma.h" > +#include "mgb4_sysfs.h" > +#include "mgb4_io.h" > +#include "mgb4_vout.h" > +#include "mgb4_vin.h" > + > +static const struct mgb4_vin_config vin_cfg[] = { > + {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28}}, > + {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58}} > +}; > + > +static const struct i2c_board_info fpdl3_deser_info[] = { > + {I2C_BOARD_INFO("deserializer1", 0x38)}, > + {I2C_BOARD_INFO("deserializer2", 0x36)}, > +}; > + > +static const struct i2c_board_info gmsl_deser_info[] = { > + {I2C_BOARD_INFO("deserializer1", 0x4C)}, > + {I2C_BOARD_INFO("deserializer2", 0x2A)}, > +}; > + > +static const struct mgb4_i2c_kv fpdl3_i2c[] = { > + {0x06, 0xFF, 0x04}, {0x07, 0xFF, 0x01}, {0x45, 0xFF, 0xE8}, > + {0x49, 0xFF, 0x00}, {0x34, 0xFF, 0x00}, {0x23, 0xFF, 0x00} > +}; > + > +static const struct mgb4_i2c_kv gmsl_i2c[] = { > + {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}, > + {0x1CE, 0x0E, 0x0E}, {0x11, 0x05, 0x00}, {0x05, 0xC0, 0x40}, > + {0x307, 0x0F, 0x00}, {0xA0, 0x03, 0x00}, {0x3E0, 0x07, 0x07}, > + {0x308, 0x01, 0x01}, {0x10, 0x20, 0x20}, {0x300, 0x40, 0x40} > +}; > + > +static const struct v4l2_dv_timings_cap video_timings_cap = { > + .type = V4L2_DV_BT_656_1120, > + .bt = { > + .min_width = 320, > + .max_width = 4096, > + .min_height = 240, > + .max_height = 2160, > + .min_pixelclock = 1843200, /* 320 x 240 x 24Hz */ > + .max_pixelclock = 530841600, /* 4096 x 2160 x 60Hz */ > + .standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | > + V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF, > + .capabilities = V4L2_DV_BT_CAP_PROGRESSIVE | > + V4L2_DV_BT_CAP_CUSTOM, > + }, > +}; > + > +/* > + * Returns the video output connected with the given video input if the input > + * is in loopback mode. > + */ > +static struct mgb4_vout_dev *loopback_dev(struct mgb4_vin_dev *vindev, int i) > +{ > + struct mgb4_vout_dev *voutdev; > + u32 config; > + > + voutdev = vindev->mgbdev->vout[i]; > + if (!voutdev) > + return NULL; > + > + config = mgb4_read_reg(&voutdev->mgbdev->video, > + voutdev->config->regs.config); > + if ((config & 0xc) >> 2 == vindev->config->id) > + return voutdev; > + > + return NULL; > +} > + > +/* > + * Check, whether the loopback mode - a HW INPUT->OUTPUT transmission - is > + * enabled on the given input. > + */ > +static int loopback_active(struct mgb4_vin_dev *vindev) > +{ > + int i; > + > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) > + if (loopback_dev(vindev, i)) > + return 1; > + > + return 0; > +} > + > +/* > + * Set the output frame buffer padding of all outputs connected with the given > + * input when the video input is set to loopback mode. The paddings must be > + * the same for the loopback to work properly. > + */ > +static void set_loopback_padding(struct mgb4_vin_dev *vindev, u32 padding) > +{ > + struct mgb4_regs *video = &vindev->mgbdev->video; > + struct mgb4_vout_dev *voutdev; > + int i; > + > + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { > + voutdev = loopback_dev(vindev, i); > + if (voutdev) > + mgb4_write_reg(video, voutdev->config->regs.padding, > + padding); > + } > +} > + > +static int get_timings(struct mgb4_vin_dev *vindev, > + struct v4l2_dv_timings *timings) > +{ > + struct mgb4_regs *video = &vindev->mgbdev->video; > + const struct mgb4_vin_regs *regs = &vindev->config->regs; > + > + u32 status = mgb4_read_reg(video, regs->status); > + u32 pclk = mgb4_read_reg(video, regs->pclk); > + u32 signal = mgb4_read_reg(video, regs->signal); > + u32 signal2 = mgb4_read_reg(video, regs->signal2); > + u32 resolution = mgb4_read_reg(video, regs->resolution); > + > + if (!(status & (1U << 2))) > + return -ENOLCK; > + if (!(status & (3 << 9))) > + return -ENOLINK; > + > + memset(timings, 0, sizeof(*timings)); > + timings->type = V4L2_DV_BT_656_1120; > + timings->bt.width = resolution >> 16; > + timings->bt.height = resolution & 0xFFFF; > + if (status & (1U << 12)) > + timings->bt.polarities |= V4L2_DV_HSYNC_POS_POL; > + if (status & (1U << 13)) > + timings->bt.polarities |= V4L2_DV_VSYNC_POS_POL; > + timings->bt.pixelclock = pclk * 1000; > + timings->bt.hsync = (signal & 0x00FF0000) >> 16; > + timings->bt.vsync = (signal2 & 0x00FF0000) >> 16; > + timings->bt.hbackporch = (signal & 0x0000FF00) >> 8; > + timings->bt.hfrontporch = signal & 0x000000FF; > + timings->bt.vbackporch = (signal2 & 0x0000FF00) >> 8; > + timings->bt.vfrontporch = signal2 & 0x000000FF; > + > + return 0; > +} > + > +static void return_all_buffers(struct mgb4_vin_dev *vindev, > + enum vb2_buffer_state state) > +{ > + struct mgb4_frame_buffer *buf, *node; > + unsigned long flags; > + > + spin_lock_irqsave(&vindev->qlock, flags); > + list_for_each_entry_safe(buf, node, &vindev->buf_list, list) { > + vb2_buffer_done(&buf->vb.vb2_buf, state); > + list_del(&buf->list); > + } > + spin_unlock_irqrestore(&vindev->qlock, flags); > +} > + > +static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, > + unsigned int *nplanes, unsigned int sizes[], > + struct device *alloc_devs[]) > +{ > + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(q); > + unsigned int size = (vindev->timings.bt.width + vindev->padding) > + * vindev->timings.bt.height * 4; > + > + if (!size) > + return -EINVAL; > + > + if (*nplanes) > + return sizes[0] < size ? -EINVAL : 0; > + *nplanes = 1; > + sizes[0] = size; > + > + return 0; > +} > + > +static int buffer_init(struct vb2_buffer *vb) > +{ > + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); > + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); > + > + INIT_LIST_HEAD(&buf->list); > + > + return 0; > +} > + > +static int buffer_prepare(struct vb2_buffer *vb) > +{ > + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); > + struct device *dev = &vindev->mgbdev->pdev->dev; > + unsigned int size = (vindev->timings.bt.width + vindev->padding) > + * vindev->timings.bt.height * 4; > + > + if (vb2_plane_size(vb, 0) < size) { > + dev_err(dev, "buffer too small (%lu < %u)\n", > + vb2_plane_size(vb, 0), size); > + return -EINVAL; > + } > + > + vb2_set_plane_payload(vb, 0, size); > + > + return 0; > +} > + > +static void buffer_queue(struct vb2_buffer *vb) > +{ > + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); > + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); > + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); > + unsigned long flags; > + > + spin_lock_irqsave(&vindev->qlock, flags); > + list_add_tail(&buf->list, &vindev->buf_list); > + spin_unlock_irqrestore(&vindev->qlock, flags); > +} > + > +static void stop_streaming(struct vb2_queue *vq) > +{ > + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq); > + const struct mgb4_vin_config *config = vindev->config; > + int irq = xdma_get_user_irq(vindev->mgbdev->xdev, config->vin_irq); > + > + xdma_disable_user_irq(vindev->mgbdev->xdev, irq); > + > + /* > + * In loopback mode, the HW frame queue must be left running for > + * the IN->OUT transmission to work! > + */ > + if (!loopback_active(vindev)) > + mgb4_mask_reg(&vindev->mgbdev->video, config->regs.config, 0x2, > + 0x0); > + > + cancel_work_sync(&vindev->dma_work); > + return_all_buffers(vindev, VB2_BUF_STATE_ERROR); > +} > + > +static int start_streaming(struct vb2_queue *vq, unsigned int count) > +{ > + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq); > + const struct mgb4_vin_config *config = vindev->config; > + int irq = xdma_get_user_irq(vindev->mgbdev->xdev, config->vin_irq); > + > + vindev->sequence = 0; > + > + /* > + * In loopback mode, the HW frame queue is already running. > + */ > + if (!loopback_active(vindev)) > + mgb4_mask_reg(&vindev->mgbdev->video, config->regs.config, 0x2, > + 0x2); > + > + xdma_enable_user_irq(vindev->mgbdev->xdev, irq); > + > + return 0; > +} > + > +static const struct vb2_ops queue_ops = { > + .queue_setup = queue_setup, > + .buf_init = buffer_init, > + .buf_prepare = buffer_prepare, > + .buf_queue = buffer_queue, > + .start_streaming = start_streaming, > + .stop_streaming = stop_streaming, > + .wait_prepare = vb2_ops_wait_prepare, > + .wait_finish = vb2_ops_wait_finish > +}; > + > +static int fh_open(struct file *file) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + int rv; > + > + mutex_lock(&vindev->lock); > + > + rv = v4l2_fh_open(file); > + if (rv) > + goto out; > + > + if (!v4l2_fh_is_singular_file(file)) > + goto out; > + > + get_timings(vindev, &vindev->timings); > + set_loopback_padding(vindev, vindev->padding); > + > +out: > + mutex_unlock(&vindev->lock); > + return rv; > +} > + > +static int fh_release(struct file *file) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + int rv; > + > + mutex_lock(&vindev->lock); > + > + if (v4l2_fh_is_singular_file(file)) > + set_loopback_padding(vindev, 0); > + > + rv = _vb2_fop_release(file, NULL); > + > + mutex_unlock(&vindev->lock); > + > + return rv; > +} > + > +static const struct v4l2_file_operations video_fops = { > + .owner = THIS_MODULE, > + .open = fh_open, > + .release = fh_release, > + .unlocked_ioctl = video_ioctl2, > + .read = vb2_fop_read, > + .mmap = vb2_fop_mmap, > + .poll = vb2_fop_poll, > +}; > + > +static int vidioc_querycap(struct file *file, void *priv, > + struct v4l2_capability *cap) > +{ > + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); > + strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card)); > + > + return 0; > +} > + > +static int vidioc_enum_fmt(struct file *file, void *priv, > + struct v4l2_fmtdesc *f) > +{ > + if (f->index != 0) > + return -EINVAL; > + > + f->pixelformat = V4L2_PIX_FMT_ABGR32; > + > + return 0; > +} > + > +static int vidioc_enum_frameintervals(struct file *file, void *priv, > + struct v4l2_frmivalenum *ival) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + > + if (ival->index != 0) > + return -EINVAL; > + if (ival->pixel_format != V4L2_PIX_FMT_ABGR32) > + return -EINVAL; > + if (ival->width != vindev->timings.bt.width || > + ival->height != vindev->timings.bt.height) > + return -EINVAL; > + > + ival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS; > + ival->stepwise.min.denominator = 60; > + ival->stepwise.min.numerator = 1; > + ival->stepwise.max.denominator = 1; > + ival->stepwise.max.numerator = 1; > + ival->stepwise.step = ival->stepwise.max; > + > + return 0; > +} > + > +static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + > + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; > + f->fmt.pix.width = vindev->timings.bt.width; > + f->fmt.pix.height = vindev->timings.bt.height; > + f->fmt.pix.field = V4L2_FIELD_NONE; > + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; > + f->fmt.pix.bytesperline = (f->fmt.pix.width + vindev->padding) * 4; > + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; > + > + return 0; > +} > + > +static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + struct mgb4_regs *video = &vindev->mgbdev->video; > + > + if (vb2_is_busy(&vindev->queue)) > + return -EBUSY; > + > + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; > + f->fmt.pix.width = vindev->timings.bt.width; > + f->fmt.pix.height = vindev->timings.bt.height; > + f->fmt.pix.field = V4L2_FIELD_NONE; > + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; > + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, > + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); > + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; s_fmt can call try_fmt for these calculations. > + > + vindev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width * 4)) / 4; > + mgb4_write_reg(video, vindev->config->regs.padding, vindev->padding); > + set_loopback_padding(vindev, vindev->padding); > + > + return 0; > +} > + > +static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + > + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; > + f->fmt.pix.width = vindev->timings.bt.width; > + f->fmt.pix.height = vindev->timings.bt.height; > + f->fmt.pix.field = V4L2_FIELD_NONE; > + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; > + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, > + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); > + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; > + > + return 0; > +} > + > +static int vidioc_enum_input(struct file *file, void *priv, > + struct v4l2_input *i) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + struct mgb4_regs *video = &vindev->mgbdev->video; > + u32 status; > + > + if (i->index != 0) > + return -EINVAL; > + > + strscpy(i->name, "MGB4", sizeof(i->name)); > + i->type = V4L2_INPUT_TYPE_CAMERA; > + i->capabilities = V4L2_IN_CAP_DV_TIMINGS; > + i->status = 0; > + > + status = mgb4_read_reg(video, vindev->config->regs.status); > + if (!(status & (1U << 2))) > + i->status |= V4L2_IN_ST_NO_SYNC; > + if (!(status & (3 << 9))) > + i->status |= V4L2_IN_ST_NO_SIGNAL; > + > + return 0; > +} > + > +static int vidioc_enum_framesizes(struct file *file, void *fh, > + struct v4l2_frmsizeenum *fsize) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + > + if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_ABGR32) > + return -EINVAL; > + > + fsize->discrete.width = vindev->timings.bt.width; > + fsize->discrete.height = vindev->timings.bt.height; > + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; > + > + return 0; > +} > + > +static int vidioc_s_input(struct file *file, void *priv, unsigned int i) > +{ > + return (i == 0) ? 0 : -EINVAL; > +} > + > +static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) > +{ > + *i = 0; > + return 0; > +} > + > +static int vidioc_parm(struct file *file, void *priv, > + struct v4l2_streamparm *parm) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + struct mgb4_regs *video = &vindev->mgbdev->video; > + const struct mgb4_vin_regs *regs = &vindev->config->regs; > + struct v4l2_fract timeperframe = { > + .numerator = mgb4_read_reg(video, regs->frame_period), > + .denominator = 125000000, > + }; > + > + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) > + return -EINVAL; > + > + parm->parm.capture.readbuffers = 2; > + parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; > + parm->parm.capture.timeperframe = timeperframe; > + > + return 0; > +} > + > +static int vidioc_s_dv_timings(struct file *file, void *fh, > + struct v4l2_dv_timings *timings) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + > + if (timings->bt.width < video_timings_cap.bt.min_width || > + timings->bt.width > video_timings_cap.bt.max_width || > + timings->bt.height < video_timings_cap.bt.min_height || > + timings->bt.height > video_timings_cap.bt.max_height) > + return -EINVAL; > + if (timings->bt.width == vindev->timings.bt.width && > + timings->bt.height == vindev->timings.bt.height) > + return 0; > + if (vb2_is_busy(&vindev->queue)) > + return -EBUSY; > + > + vindev->timings = *timings; > + > + return 0; > +} > + > +static int vidioc_g_dv_timings(struct file *file, void *fh, > + struct v4l2_dv_timings *timings) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + *timings = vindev->timings; > + > + return 0; > +} > + > +static int vidioc_query_dv_timings(struct file *file, void *fh, > + struct v4l2_dv_timings *timings) > +{ > + struct mgb4_vin_dev *vindev = video_drvdata(file); > + > + return get_timings(vindev, timings); > +} > + > +static int vidioc_enum_dv_timings(struct file *file, void *fh, > + struct v4l2_enum_dv_timings *timings) > +{ > + return v4l2_enum_dv_timings_cap(timings, &video_timings_cap, NULL, NULL); > +} > + > +static int vidioc_dv_timings_cap(struct file *file, void *fh, > + struct v4l2_dv_timings_cap *cap) > +{ > + *cap = video_timings_cap; > + > + return 0; > +} > + > +static int vidioc_subscribe_event(struct v4l2_fh *fh, > + const struct v4l2_event_subscription *sub) > +{ > + switch (sub->type) { > + case V4L2_EVENT_SOURCE_CHANGE: > + return v4l2_src_change_event_subscribe(fh, sub); > + } > + > + return v4l2_ctrl_subscribe_event(fh, sub); > +} > + > +static const struct v4l2_ioctl_ops video_ioctl_ops = { > + .vidioc_querycap = vidioc_querycap, > + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, > + .vidioc_try_fmt_vid_cap = vidioc_try_fmt, > + .vidioc_s_fmt_vid_cap = vidioc_s_fmt, > + .vidioc_g_fmt_vid_cap = vidioc_g_fmt, > + .vidioc_enum_framesizes = vidioc_enum_framesizes, > + .vidioc_enum_frameintervals = vidioc_enum_frameintervals, > + .vidioc_enum_input = vidioc_enum_input, > + .vidioc_g_input = vidioc_g_input, > + .vidioc_s_input = vidioc_s_input, > + .vidioc_reqbufs = vb2_ioctl_reqbufs, > + .vidioc_create_bufs = vb2_ioctl_create_bufs, > + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, > + .vidioc_querybuf = vb2_ioctl_querybuf, > + .vidioc_qbuf = vb2_ioctl_qbuf, > + .vidioc_dqbuf = vb2_ioctl_dqbuf, > + .vidioc_expbuf = vb2_ioctl_expbuf, > + .vidioc_streamon = vb2_ioctl_streamon, > + .vidioc_streamoff = vb2_ioctl_streamoff, > + .vidioc_g_parm = vidioc_parm, > + .vidioc_s_parm = vidioc_parm, > + .vidioc_dv_timings_cap = vidioc_dv_timings_cap, > + .vidioc_enum_dv_timings = vidioc_enum_dv_timings, > + .vidioc_g_dv_timings = vidioc_g_dv_timings, > + .vidioc_s_dv_timings = vidioc_s_dv_timings, > + .vidioc_query_dv_timings = vidioc_query_dv_timings, > + .vidioc_subscribe_event = vidioc_subscribe_event, > + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, > +}; > + > +static void dma_transfer(struct work_struct *work) > +{ > + struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, > + dma_work); > + struct mgb4_regs *video = &vindev->mgbdev->video; > + struct device *dev = &vindev->mgbdev->pdev->dev; > + struct mgb4_frame_buffer *buf = 0; > + unsigned long flags; > + u32 addr; > + int rv; > + > + spin_lock_irqsave(&vindev->qlock, flags); > + if (!list_empty(&vindev->buf_list)) { > + buf = list_first_entry(&vindev->buf_list, > + struct mgb4_frame_buffer, list); > + list_del_init(vindev->buf_list.next); > + } > + spin_unlock_irqrestore(&vindev->qlock, flags); > + > + if (!buf) > + return; > + > + addr = mgb4_read_reg(video, vindev->config->regs.address); > + if (addr >= MGB4_ERR_QUEUE_FULL) { > + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); > + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); > + return; > + } > + > + rv = mgb4_dma_transfer(vindev->mgbdev, vindev->config->dma_channel, > + false, addr, > + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); > + if (rv < 0) { > + dev_warn(dev, "DMA transfer error\n"); > + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); > + } else { > + buf->vb.vb2_buf.timestamp = ktime_get_ns(); > + buf->vb.sequence = vindev->sequence++; > + buf->vb.field = V4L2_FIELD_NONE; > + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); > + } > +} > + > +static void signal_change(struct work_struct *work) > +{ > + struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, > + err_work); > + struct mgb4_regs *video = &vindev->mgbdev->video; > + struct v4l2_bt_timings *timings = &vindev->timings.bt; > + struct device *dev = &vindev->mgbdev->pdev->dev; > + > + u32 resolution = mgb4_read_reg(video, vindev->config->regs.resolution); > + u32 width = resolution >> 16; > + u32 height = resolution & 0xFFFF; > + > + if (timings->width != width || timings->height != height) { > + static const struct v4l2_event ev = { > + .type = V4L2_EVENT_SOURCE_CHANGE, > + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, > + }; > + > + v4l2_event_queue(&vindev->vdev, &ev); > + > + if (vb2_is_streaming(&vindev->queue)) > + vb2_queue_error(&vindev->queue); > + } > + > + dev_dbg(dev, "stream changed to %ux%u\n", width, height); > +} > + > +static irqreturn_t vin_handler(int irq, void *ctx) > +{ > + struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx; > + struct mgb4_regs *video = &vindev->mgbdev->video; > + > + schedule_work(&vindev->dma_work); > + > + mgb4_write_reg(video, 0xB4, 1U << vindev->config->vin_irq); > + > + return IRQ_HANDLED; > +} > + > +static irqreturn_t err_handler(int irq, void *ctx) > +{ > + struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx; > + struct mgb4_regs *video = &vindev->mgbdev->video; > + > + schedule_work(&vindev->err_work); > + > + mgb4_write_reg(video, 0xB4, 1U << vindev->config->err_irq); > + > + return IRQ_HANDLED; > +} > + > +static int deser_init(struct mgb4_vin_dev *vindev, int id) > +{ > + int rv, addr_size; > + size_t values_count; > + const struct mgb4_i2c_kv *values; > + const struct i2c_board_info *info; > + struct device *dev = &vindev->mgbdev->pdev->dev; > + > + if (MGB4_IS_GMSL(vindev->mgbdev)) { > + info = &gmsl_deser_info[id]; > + addr_size = 16; > + values = gmsl_i2c; > + values_count = ARRAY_SIZE(gmsl_i2c); > + } else { > + info = &fpdl3_deser_info[id]; > + addr_size = 8; > + values = fpdl3_i2c; > + values_count = ARRAY_SIZE(fpdl3_i2c); > + } > + > + rv = mgb4_i2c_init(&vindev->deser, vindev->mgbdev->i2c_adap, info, > + addr_size); > + if (rv < 0) { > + dev_err(dev, "failed to create deserializer\n"); > + return rv; > + } > + rv = mgb4_i2c_configure(&vindev->deser, values, values_count); > + if (rv < 0) { > + dev_err(dev, "failed to configure deserializer\n"); > + goto err_i2c_dev; > + } > + > + return 0; > + > +err_i2c_dev: > + mgb4_i2c_free(&vindev->deser); > + > + return rv; > +} > + > +static void fpga_init(struct mgb4_vin_dev *vindev) > +{ > + struct mgb4_regs *video = &vindev->mgbdev->video; > + const struct mgb4_vin_regs *regs = &vindev->config->regs; > + > + mgb4_write_reg(video, regs->config, 0x00000001); > + mgb4_write_reg(video, regs->sync, 0x03E80002); > + mgb4_write_reg(video, regs->padding, 0x00000000); > + mgb4_write_reg(video, regs->config, 1U << 9); > +} > + > +#ifdef CONFIG_DEBUG_FS > +static void debugfs_init(struct mgb4_vin_dev *vindev) > +{ > + struct mgb4_regs *video = &vindev->mgbdev->video; > + > + vindev->debugfs = debugfs_create_dir(vindev->vdev.name, > + vindev->mgbdev->debugfs); > + if (!vindev->debugfs) > + return; > + > + vindev->regs[0].name = "CONFIG"; > + vindev->regs[0].offset = vindev->config->regs.config; > + vindev->regs[1].name = "STATUS"; > + vindev->regs[1].offset = vindev->config->regs.status; > + vindev->regs[2].name = "RESOLUTION"; > + vindev->regs[2].offset = vindev->config->regs.resolution; > + vindev->regs[3].name = "FRAME_PERIOD"; > + vindev->regs[3].offset = vindev->config->regs.frame_period; > + vindev->regs[4].name = "HS_VS_GENER_SETTINGS"; > + vindev->regs[4].offset = vindev->config->regs.sync; > + vindev->regs[5].name = "PCLK_FREQUENCY"; > + vindev->regs[5].offset = vindev->config->regs.pclk; > + vindev->regs[6].name = "VIDEO_PARAMS_1"; > + vindev->regs[6].offset = vindev->config->regs.signal; > + vindev->regs[7].name = "VIDEO_PARAMS_2"; > + vindev->regs[7].offset = vindev->config->regs.signal2; > + vindev->regs[8].name = "PADDING_PIXELS"; > + vindev->regs[8].offset = vindev->config->regs.padding; > + > + vindev->regset.base = video->membase; > + vindev->regset.regs = vindev->regs; > + vindev->regset.nregs = ARRAY_SIZE(vindev->regs); > + > + debugfs_create_regset32("registers", 0444, vindev->debugfs, > + &vindev->regset); > +} > +#endif > + > +struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id) > +{ > + int rv; > + struct device_attribute **attr, **module_attr; > + struct mgb4_vin_dev *vindev; > + struct pci_dev *pdev = mgbdev->pdev; > + struct device *dev = &pdev->dev; > + int vin_irq, err_irq; > + > + vindev = kzalloc(sizeof(*vindev), GFP_KERNEL); > + if (!vindev) > + return NULL; > + > + vindev->mgbdev = mgbdev; > + vindev->config = &vin_cfg[id]; > + > + /* Frame queue*/ > + INIT_LIST_HEAD(&vindev->buf_list); > + spin_lock_init(&vindev->qlock); > + > + /* Work queues */ > + INIT_WORK(&vindev->dma_work, dma_transfer); > + INIT_WORK(&vindev->err_work, signal_change); > + > + /* IRQ callback */ > + vin_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->vin_irq); > + rv = request_irq(vin_irq, vin_handler, 0, "mgb4-vin", vindev); > + if (rv) { > + dev_err(dev, "failed to register vin irq handler\n"); > + goto err_alloc; > + } > + /* Error IRQ callback */ > + err_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->err_irq); > + rv = request_irq(err_irq, err_handler, 0, "mgb4-err", vindev); > + if (rv) { > + dev_err(dev, "failed to register err irq handler\n"); > + goto err_vin_irq; > + } > + > + /* Set the FPGA registers default values */ > + fpga_init(vindev); > + > + /* Set the deserializer default values */ > + rv = deser_init(vindev, id); > + if (rv) > + goto err_err_irq; > + > + /* V4L2 stuff init */ > + rv = v4l2_device_register(dev, &vindev->v4l2dev); > + if (rv) { > + dev_err(dev, "failed to register v4l2 device\n"); > + goto err_err_irq; > + } > + > + mutex_init(&vindev->lock); > + > + vindev->queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; > + vindev->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; > + vindev->queue.buf_struct_size = sizeof(struct mgb4_frame_buffer); > + vindev->queue.ops = &queue_ops; > + vindev->queue.mem_ops = &vb2_dma_sg_memops; > + vindev->queue.gfp_flags = GFP_DMA32; > + vindev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; > + vindev->queue.min_buffers_needed = 2; > + vindev->queue.drv_priv = vindev; > + vindev->queue.lock = &vindev->lock; > + vindev->queue.dev = dev; > + rv = vb2_queue_init(&vindev->queue); > + if (rv) { > + dev_err(dev, "failed to initialize vb2 queue\n"); > + goto err_v4l2_dev; > + } > + > + snprintf(vindev->vdev.name, sizeof(vindev->vdev.name), "mgb4-in%d", > + id + 1); > + vindev->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE > + | V4L2_CAP_STREAMING; > + vindev->vdev.fops = &video_fops; > + vindev->vdev.ioctl_ops = &video_ioctl_ops; > + vindev->vdev.release = video_device_release_empty; > + vindev->vdev.v4l2_dev = &vindev->v4l2dev; > + vindev->vdev.lock = &vindev->lock; > + vindev->vdev.queue = &vindev->queue; > + video_set_drvdata(&vindev->vdev, vindev); > + > + /* Enable the video signal change watcher */ > + xdma_enable_user_irq(vindev->mgbdev->xdev, err_irq); > + > + /* Register the video device */ > + rv = video_register_device(&vindev->vdev, VFL_TYPE_VIDEO, -1); > + if (rv) { > + dev_err(dev, "failed to register video device\n"); > + goto err_v4l2_dev; > + } > + > + /* Module sysfs attributes */ > + module_attr = MGB4_IS_GMSL(mgbdev) > + ? mgb4_gmsl_in_attrs : mgb4_fpdl3_in_attrs; > + for (attr = module_attr; *attr; attr++) > + device_create_file(&vindev->vdev.dev, *attr); I believe this can be simplified by using ATTRIBUTE_GROUPS and the dev_groups field in the struct pci_driver. This will then be automatically created and removed. > + > +#ifdef CONFIG_DEBUG_FS > + debugfs_init(vindev); > +#endif > + > + return vindev; > + > +err_v4l2_dev: > + v4l2_device_unregister(&vindev->v4l2dev); > +err_err_irq: > + free_irq(err_irq, vindev); > +err_vin_irq: > + free_irq(vin_irq, vindev); > +err_alloc: > + kfree(vindev); > + > + return NULL; > +} > + > +void mgb4_vin_free(struct mgb4_vin_dev *vindev) > +{ > + struct device_attribute **attr, **module_attr; > + int vin_irq = xdma_get_user_irq(vindev->mgbdev->xdev, > + vindev->config->vin_irq); > + int err_irq = xdma_get_user_irq(vindev->mgbdev->xdev, > + vindev->config->err_irq); > + > + xdma_disable_user_irq(vindev->mgbdev->xdev, err_irq); > + > + free_irq(vin_irq, vindev); > + free_irq(err_irq, vindev); > + > + debugfs_remove_recursive(vindev->debugfs); > + > + module_attr = MGB4_IS_GMSL(vindev->mgbdev) > + ? mgb4_gmsl_in_attrs : mgb4_fpdl3_in_attrs; > + for (attr = module_attr; *attr; attr++) > + device_remove_file(&vindev->vdev.dev, *attr); > + > + mgb4_i2c_free(&vindev->deser); > + video_unregister_device(&vindev->vdev); > + v4l2_device_unregister(&vindev->v4l2dev); > + > + kfree(vindev); > +} > diff --git a/drivers/media/pci/mgb4/mgb4_vin.h b/drivers/media/pci/mgb4/mgb4_vin.h > new file mode 100644 > index 000000000000..0249b400ad4d > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_vin.h > @@ -0,0 +1,69 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_VIN_H__ > +#define __MGB4_VIN_H__ > + > +#include <media/v4l2-device.h> > +#include <media/v4l2-dev.h> > +#include <media/v4l2-ctrls.h> > +#include <media/videobuf2-core.h> > +#include <linux/debugfs.h> > +#include "mgb4_i2c.h" > + > +struct mgb4_vin_regs { > + u32 address; > + u32 config; > + u32 status; > + u32 resolution; > + u32 frame_period; > + u32 sync; > + u32 pclk; > + u32 signal; > + u32 signal2; > + u32 padding; > +}; > + > +struct mgb4_vin_config { > + int id; > + int dma_channel; > + int vin_irq; > + int err_irq; > + struct mgb4_vin_regs regs; > +}; > + > +struct mgb4_vin_dev { > + struct mgb4_dev *mgbdev; > + struct v4l2_device v4l2dev; > + struct video_device vdev; > + struct vb2_queue queue; > + struct mutex lock; /* vdev lock */ > + > + spinlock_t qlock; /* video buffer queue lock */ > + struct list_head buf_list; > + struct work_struct dma_work, err_work; > + > + unsigned int sequence; > + > + struct v4l2_dv_timings timings; > + u32 freq_range; > + u32 padding; > + > + struct mgb4_i2c_client deser; > + > + const struct mgb4_vin_config *config; > + > +#ifdef CONFIG_DEBUG_FS > + struct dentry *debugfs; > + struct debugfs_regset32 regset; > + struct debugfs_reg32 regs[9]; > +#endif > +}; > + > +struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id); > +void mgb4_vin_free(struct mgb4_vin_dev *vindev); > + > +#endif > diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c > new file mode 100644 > index 000000000000..718a400db310 > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_vout.c > @@ -0,0 +1,594 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + * > + * This is the v4l2 output device module. It initializes the signal serializers > + * and creates the v4l2 video devices. > + * > + * When the device is in loopback mode (a direct, in HW, in->out frame passing > + * mode) we disable the v4l2 output by returning EBUSY in the open() syscall. > + */ > + > +#include <linux/pci.h> > +#include <linux/align.h> > +#include <linux/dma/amd_xdma.h> > +#include <media/v4l2-ioctl.h> > +#include <media/videobuf2-v4l2.h> > +#include <media/videobuf2-dma-sg.h> > +#include "mgb4_core.h" > +#include "mgb4_dma.h" > +#include "mgb4_sysfs.h" > +#include "mgb4_io.h" > +#include "mgb4_cmt.h" > +#include "mgb4_vout.h" > + > +static const struct mgb4_vout_config vout_cfg[] = { > + {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7c}}, > + {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8c, 0x90, 0x9c}} > +}; > + > +static const struct i2c_board_info fpdl3_ser_info[] = { > + {I2C_BOARD_INFO("serializer1", 0x14)}, > + {I2C_BOARD_INFO("serializer2", 0x16)}, > +}; > + > +static const struct mgb4_i2c_kv fpdl3_i2c[] = { > + {0x05, 0xFF, 0x04}, {0x06, 0xFF, 0x01}, {0xC2, 0xFF, 0x80} > +}; > + > +static void return_all_buffers(struct mgb4_vout_dev *voutdev, > + enum vb2_buffer_state state) > +{ > + struct mgb4_frame_buffer *buf, *node; > + unsigned long flags; > + > + spin_lock_irqsave(&voutdev->qlock, flags); > + list_for_each_entry_safe(buf, node, &voutdev->buf_list, list) { > + vb2_buffer_done(&buf->vb.vb2_buf, state); > + list_del(&buf->list); > + } > + spin_unlock_irqrestore(&voutdev->qlock, flags); > +} > + > +static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, > + unsigned int *nplanes, unsigned int sizes[], > + struct device *alloc_devs[]) > +{ > + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(q); > + unsigned int size; > + > + size = (voutdev->width + voutdev->padding) * voutdev->height * 4; > + > + if (*nplanes) > + return sizes[0] < size ? -EINVAL : 0; > + *nplanes = 1; > + sizes[0] = size; > + > + return 0; > +} > + > +static int buffer_init(struct vb2_buffer *vb) > +{ > + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); > + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); > + > + INIT_LIST_HEAD(&buf->list); > + > + return 0; > +} > + > +static int buffer_prepare(struct vb2_buffer *vb) > +{ > + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vb->vb2_queue); > + struct device *dev = &voutdev->mgbdev->pdev->dev; > + unsigned int size; > + > + size = (voutdev->width * voutdev->padding) * voutdev->height * 4; > + > + if (vb2_plane_size(vb, 0) < size) { > + dev_err(dev, "buffer too small (%lu < %u)\n", > + vb2_plane_size(vb, 0), size); > + return -EINVAL; > + } > + > + vb2_set_plane_payload(vb, 0, size); > + > + return 0; > +} > + > +static void buffer_queue(struct vb2_buffer *vb) > +{ > + struct mgb4_vout_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); > + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); > + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); > + unsigned long flags; > + > + spin_lock_irqsave(&vindev->qlock, flags); > + list_add_tail(&buf->list, &vindev->buf_list); > + spin_unlock_irqrestore(&vindev->qlock, flags); > +} > + > +static void stop_streaming(struct vb2_queue *vq) > +{ > + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq); > + struct mgb4_dev *mgbdev = voutdev->mgbdev; > + int irq = xdma_get_user_irq(mgbdev->xdev, voutdev->config->irq); > + > + xdma_disable_user_irq(mgbdev->xdev, irq); > + cancel_work_sync(&voutdev->dma_work); > + mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0x2, 0x0); > + return_all_buffers(voutdev, VB2_BUF_STATE_ERROR); > +} > + > +static int start_streaming(struct vb2_queue *vq, unsigned int count) > +{ > + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq); > + struct mgb4_dev *mgbdev = voutdev->mgbdev; > + struct device *dev = &mgbdev->pdev->dev; > + struct mgb4_frame_buffer *buf; > + struct mgb4_regs *video = &mgbdev->video; > + const struct mgb4_vout_config *config = voutdev->config; > + int irq = xdma_get_user_irq(mgbdev->xdev, config->irq); > + int rv; > + u32 addr; > + > + mgb4_mask_reg(video, config->regs.config, 0x2, 0x2); > + > + addr = mgb4_read_reg(video, config->regs.address); > + if (addr >= MGB4_ERR_QUEUE_FULL) { > + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); > + return_all_buffers(voutdev, VB2_BUF_STATE_QUEUED); > + return -EBUSY; > + } > + > + buf = list_first_entry(&voutdev->buf_list, struct mgb4_frame_buffer, > + list); > + list_del_init(voutdev->buf_list.next); > + > + rv = mgb4_dma_transfer(mgbdev, config->dma_channel, true, addr, > + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); > + if (rv < 0) { > + dev_warn(dev, "DMA transfer error\n"); > + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); > + } else { > + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); > + } > + > + xdma_enable_user_irq(mgbdev->xdev, irq); > + > + return 0; > +} > + > +static const struct vb2_ops queue_ops = { > + .queue_setup = queue_setup, > + .buf_init = buffer_init, > + .buf_prepare = buffer_prepare, > + .buf_queue = buffer_queue, > + .start_streaming = start_streaming, > + .stop_streaming = stop_streaming, > + .wait_prepare = vb2_ops_wait_prepare, > + .wait_finish = vb2_ops_wait_finish > +}; > + > +static int vidioc_querycap(struct file *file, void *priv, > + struct v4l2_capability *cap) > +{ > + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); > + strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card)); > + > + return 0; > +} > + > +static int vidioc_enum_fmt(struct file *file, void *priv, > + struct v4l2_fmtdesc *f) > +{ > + if (f->index != 0) > + return -EINVAL; > + > + f->pixelformat = V4L2_PIX_FMT_ABGR32; > + > + return 0; > +} > + > +static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) > +{ > + struct mgb4_vout_dev *voutdev = video_drvdata(file); > + > + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; > + f->fmt.pix.width = voutdev->width; > + f->fmt.pix.height = voutdev->height; > + f->fmt.pix.field = V4L2_FIELD_NONE; > + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; > + f->fmt.pix.bytesperline = (f->fmt.pix.width + voutdev->padding) * 4; > + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; > + > + return 0; > +} > + > +static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) > +{ > + struct mgb4_vout_dev *voutdev = video_drvdata(file); > + struct mgb4_regs *video = &voutdev->mgbdev->video; > + > + if (vb2_is_busy(&voutdev->queue)) > + return -EBUSY; > + > + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; > + f->fmt.pix.width = voutdev->width; > + f->fmt.pix.height = voutdev->height; > + f->fmt.pix.field = V4L2_FIELD_NONE; > + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; > + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, > + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); > + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; s_fmt can call try_fmt to handle most of the calculations. > + > + voutdev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width * 4)) / 4; > + mgb4_write_reg(video, voutdev->config->regs.padding, voutdev->padding); > + > + return 0; > +} > + > +static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) > +{ > + struct mgb4_vout_dev *voutdev = video_drvdata(file); > + > + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; > + f->fmt.pix.width = voutdev->width; > + f->fmt.pix.height = voutdev->height; > + f->fmt.pix.field = V4L2_FIELD_NONE; > + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; > + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, > + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); > + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; > + > + return 0; > +} > + > +static int vidioc_g_output(struct file *file, void *priv, unsigned int *i) > +{ > + *i = 0; > + return 0; > +} > + > +static int vidioc_s_output(struct file *file, void *priv, unsigned int i) > +{ > + return i ? -EINVAL : 0; > +} > + > +static int vidioc_enum_output(struct file *file, void *priv, > + struct v4l2_output *out) > +{ > + if (out->index != 0) > + return -EINVAL; > + > + out->type = V4L2_OUTPUT_TYPE_ANALOG; > + strscpy(out->name, "MGB4", sizeof(out->name)); > + > + return 0; > +} > + > +static const struct v4l2_ioctl_ops video_ioctl_ops = { > + .vidioc_querycap = vidioc_querycap, > + .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, > + .vidioc_try_fmt_vid_out = vidioc_try_fmt, > + .vidioc_s_fmt_vid_out = vidioc_s_fmt, > + .vidioc_g_fmt_vid_out = vidioc_g_fmt, > + .vidioc_enum_output = vidioc_enum_output, > + .vidioc_g_output = vidioc_g_output, > + .vidioc_s_output = vidioc_s_output, > + .vidioc_reqbufs = vb2_ioctl_reqbufs, > + .vidioc_create_bufs = vb2_ioctl_create_bufs, > + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, > + .vidioc_querybuf = vb2_ioctl_querybuf, > + .vidioc_qbuf = vb2_ioctl_qbuf, > + .vidioc_dqbuf = vb2_ioctl_dqbuf, > + .vidioc_expbuf = vb2_ioctl_expbuf, > + .vidioc_streamon = vb2_ioctl_streamon, > + .vidioc_streamoff = vb2_ioctl_streamoff, > +}; > + > +static int fh_open(struct file *file) > +{ > + struct mgb4_vout_dev *voutdev = video_drvdata(file); > + struct mgb4_regs *video = &voutdev->mgbdev->video; > + struct device *dev = &voutdev->mgbdev->pdev->dev; > + u32 config, resolution; > + int rv; > + > + /* Return EBUSY when the device is in loopback mode */ > + config = mgb4_read_reg(video, voutdev->config->regs.config); > + if ((config & 0xc) >> 2 != voutdev->config->id + MGB4_VIN_DEVICES) { > + dev_dbg(dev, "can not open - device in loopback mode"); > + return -EBUSY; > + } > + > + mutex_lock(&voutdev->lock); > + > + rv = v4l2_fh_open(file); > + if (rv) > + goto out; > + > + if (!v4l2_fh_is_singular_file(file)) > + goto out; > + > + resolution = mgb4_read_reg(video, voutdev->config->regs.resolution); > + voutdev->width = resolution >> 16; > + voutdev->height = resolution & 0xFFFF; > + > +out: > + mutex_unlock(&voutdev->lock); > + return rv; > +} > + > +static const struct v4l2_file_operations video_fops = { > + .owner = THIS_MODULE, > + .open = fh_open, > + .release = vb2_fop_release, > + .unlocked_ioctl = video_ioctl2, > + .write = vb2_fop_write, > + .mmap = vb2_fop_mmap, > + .poll = vb2_fop_poll, > +}; > + > +static void dma_transfer(struct work_struct *work) > +{ > + struct mgb4_vout_dev *voutdev = container_of(work, struct mgb4_vout_dev, > + dma_work); > + struct device *dev = &voutdev->mgbdev->pdev->dev; > + struct mgb4_regs *video = &voutdev->mgbdev->video; > + struct mgb4_frame_buffer *buf = 0; > + unsigned long flags; > + u32 addr; > + int rv; > + > + spin_lock_irqsave(&voutdev->qlock, flags); > + if (!list_empty(&voutdev->buf_list)) { > + buf = list_first_entry(&voutdev->buf_list, > + struct mgb4_frame_buffer, list); > + list_del_init(voutdev->buf_list.next); > + } > + spin_unlock_irqrestore(&voutdev->qlock, flags); > + > + if (!buf) > + return; > + > + addr = mgb4_read_reg(video, voutdev->config->regs.address); > + if (addr >= MGB4_ERR_QUEUE_FULL) { > + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); > + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); > + return; > + } > + > + rv = mgb4_dma_transfer(voutdev->mgbdev, voutdev->config->dma_channel, > + true, addr, > + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); > + if (rv < 0) { > + dev_warn(dev, "DMA transfer error\n"); > + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); > + } else { > + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); > + } > +} > + > +static irqreturn_t handler(int irq, void *ctx) > +{ > + struct mgb4_vout_dev *voutdev = (struct mgb4_vout_dev *)ctx; > + struct mgb4_regs *video = &voutdev->mgbdev->video; > + > + schedule_work(&voutdev->dma_work); > + > + mgb4_write_reg(video, 0xB4, 1U << voutdev->config->irq); > + > + return IRQ_HANDLED; > +} > + > +static int ser_init(struct mgb4_vout_dev *voutdev, int id) > +{ > + int rv; > + const struct i2c_board_info *info = &fpdl3_ser_info[id]; > + struct mgb4_i2c_client *ser = &voutdev->ser; > + struct device *dev = &voutdev->mgbdev->pdev->dev; > + > + if (MGB4_IS_GMSL(voutdev->mgbdev)) > + return 0; > + > + rv = mgb4_i2c_init(ser, voutdev->mgbdev->i2c_adap, info, 8); > + if (rv < 0) { > + dev_err(dev, "failed to create serializer\n"); > + return rv; > + } > + rv = mgb4_i2c_configure(ser, fpdl3_i2c, ARRAY_SIZE(fpdl3_i2c)); > + if (rv < 0) { > + dev_err(dev, "failed to configure serializer\n"); > + goto err_i2c_dev; > + } > + > + return 0; > + > +err_i2c_dev: > + mgb4_i2c_free(ser); > + > + return rv; > +} > + > +static void fpga_init(struct mgb4_vout_dev *voutdev) > +{ > + struct mgb4_regs *video = &voutdev->mgbdev->video; > + const struct mgb4_vout_regs *regs = &voutdev->config->regs; > + > + mgb4_write_reg(video, regs->config, 0x00000011); > + mgb4_write_reg(video, regs->resolution, > + (MGB4_DEFAULT_WIDTH << 16) | MGB4_DEFAULT_HEIGHT); > + mgb4_write_reg(video, regs->hsync, 0x00102020); > + mgb4_write_reg(video, regs->vsync, 0x40020202); > + mgb4_write_reg(video, regs->frame_period, MGB4_DEFAULT_PERIOD); > + mgb4_write_reg(video, regs->padding, 0x00000000); > + > + voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, 70000 >> 1) << 1; > + > + mgb4_write_reg(video, regs->config, > + (voutdev->config->id + MGB4_VIN_DEVICES) << 2 | 1 << 4); > +} > + > +#ifdef CONFIG_DEBUG_FS > +static void debugfs_init(struct mgb4_vout_dev *voutdev) > +{ > + struct mgb4_regs *video = &voutdev->mgbdev->video; > + > + voutdev->debugfs = debugfs_create_dir(voutdev->vdev.name, > + voutdev->mgbdev->debugfs); > + if (!voutdev->debugfs) > + return; > + > + voutdev->regs[0].name = "CONFIG"; > + voutdev->regs[0].offset = voutdev->config->regs.config; > + voutdev->regs[1].name = "STATUS"; > + voutdev->regs[1].offset = voutdev->config->regs.status; > + voutdev->regs[2].name = "RESOLUTION"; > + voutdev->regs[2].offset = voutdev->config->regs.resolution; > + voutdev->regs[3].name = "VIDEO_PARAMS_1"; > + voutdev->regs[3].offset = voutdev->config->regs.hsync; > + voutdev->regs[4].name = "VIDEO_PARAMS_2"; > + voutdev->regs[4].offset = voutdev->config->regs.vsync; > + voutdev->regs[5].name = "FRAME_PERIOD"; > + voutdev->regs[5].offset = voutdev->config->regs.frame_period; > + voutdev->regs[6].name = "PADDING"; > + voutdev->regs[6].offset = voutdev->config->regs.padding; > + > + voutdev->regset.base = video->membase; > + voutdev->regset.regs = voutdev->regs; > + voutdev->regset.nregs = ARRAY_SIZE(voutdev->regs); > + > + debugfs_create_regset32("registers", 0444, voutdev->debugfs, > + &voutdev->regset); > +} > +#endif > + > +struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id) > +{ > + int rv, irq; > + struct device_attribute **attr, **module_attr; > + struct mgb4_vout_dev *voutdev; > + struct mgb4_regs *video; > + struct pci_dev *pdev = mgbdev->pdev; > + struct device *dev = &pdev->dev; > + > + voutdev = kzalloc(sizeof(*voutdev), GFP_KERNEL); > + if (!voutdev) > + return NULL; > + > + voutdev->mgbdev = mgbdev; > + voutdev->config = &vout_cfg[id]; > + video = &voutdev->mgbdev->video; > + > + /* Frame queue */ > + INIT_LIST_HEAD(&voutdev->buf_list); > + spin_lock_init(&voutdev->qlock); > + > + /* DMA transfer stuff */ > + INIT_WORK(&voutdev->dma_work, dma_transfer); > + > + /* IRQ callback */ > + irq = xdma_get_user_irq(mgbdev->xdev, voutdev->config->irq); > + rv = request_irq(irq, handler, 0, "mgb4-vout", voutdev); > + if (rv) { > + dev_err(dev, "failed to register irq handler\n"); > + goto err_alloc; > + } > + > + /* Set the FPGA registers default values */ > + fpga_init(voutdev); > + > + /* Set the serializer default values */ > + rv = ser_init(voutdev, id); > + if (rv) > + goto err_irq; > + > + /* V4L2 stuff init */ > + rv = v4l2_device_register(dev, &voutdev->v4l2dev); > + if (rv) { > + dev_err(dev, "failed to register v4l2 device\n"); > + goto err_irq; > + } > + > + mutex_init(&voutdev->lock); > + > + voutdev->queue.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; > + voutdev->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_WRITE; > + voutdev->queue.buf_struct_size = sizeof(struct mgb4_frame_buffer); > + voutdev->queue.ops = &queue_ops; > + voutdev->queue.mem_ops = &vb2_dma_sg_memops; > + voutdev->queue.gfp_flags = GFP_DMA32; > + voutdev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; > + voutdev->queue.min_buffers_needed = 2; > + voutdev->queue.drv_priv = voutdev; > + voutdev->queue.lock = &voutdev->lock; > + voutdev->queue.dev = dev; > + rv = vb2_queue_init(&voutdev->queue); > + if (rv) { > + dev_err(dev, "failed to initialize vb2 queue\n"); > + goto err_v4l2_dev; > + } > + > + snprintf(voutdev->vdev.name, sizeof(voutdev->vdev.name), "mgb4-out%d", > + id + 1); > + voutdev->vdev.device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE > + | V4L2_CAP_STREAMING; > + voutdev->vdev.vfl_dir = VFL_DIR_TX; > + voutdev->vdev.fops = &video_fops; > + voutdev->vdev.ioctl_ops = &video_ioctl_ops; > + voutdev->vdev.release = video_device_release_empty; > + voutdev->vdev.v4l2_dev = &voutdev->v4l2dev; > + voutdev->vdev.lock = &voutdev->lock; > + voutdev->vdev.queue = &voutdev->queue; > + video_set_drvdata(&voutdev->vdev, voutdev); > + > + rv = video_register_device(&voutdev->vdev, VFL_TYPE_VIDEO, -1); > + if (rv) { > + dev_err(dev, "failed to register video device\n"); > + goto err_v4l2_dev; > + } > + > + /* Module sysfs attributes */ > + module_attr = MGB4_IS_GMSL(mgbdev) > + ? mgb4_gmsl_out_attrs : mgb4_fpdl3_out_attrs; > + for (attr = module_attr; *attr; attr++) > + device_create_file(&voutdev->vdev.dev, *attr); > + > +#ifdef CONFIG_DEBUG_FS > + debugfs_init(voutdev); > +#endif > + > + return voutdev; > + > +err_v4l2_dev: > + v4l2_device_unregister(&voutdev->v4l2dev); > +err_irq: > + free_irq(irq, voutdev); > +err_alloc: > + kfree(voutdev); > + > + return NULL; > +} > + > +void mgb4_vout_free(struct mgb4_vout_dev *voutdev) > +{ > + struct device_attribute **attr, **module_attr; > + int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq); > + > + free_irq(irq, voutdev); > + > + debugfs_remove_recursive(voutdev->debugfs); > + > + module_attr = MGB4_IS_GMSL(voutdev->mgbdev) > + ? mgb4_gmsl_out_attrs : mgb4_fpdl3_out_attrs; > + for (attr = module_attr; *attr; attr++) > + device_remove_file(&voutdev->vdev.dev, *attr); > + > + mgb4_i2c_free(&voutdev->ser); > + video_unregister_device(&voutdev->vdev); > + v4l2_device_unregister(&voutdev->v4l2dev); > + > + kfree(voutdev); > +} > diff --git a/drivers/media/pci/mgb4/mgb4_vout.h b/drivers/media/pci/mgb4/mgb4_vout.h > new file mode 100644 > index 000000000000..b163dee711fd > --- /dev/null > +++ b/drivers/media/pci/mgb4/mgb4_vout.h > @@ -0,0 +1,65 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2021-2023 Digiteq Automotive > + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> > + */ > + > +#ifndef __MGB4_VOUT_H__ > +#define __MGB4_VOUT_H__ > + > +#include <media/v4l2-device.h> > +#include <media/v4l2-dev.h> > +#include <media/v4l2-ctrls.h> > +#include <media/videobuf2-core.h> > +#include <linux/debugfs.h> > +#include "mgb4_i2c.h" > + > +struct mgb4_vout_regs { > + u32 address; > + u32 config; > + u32 status; > + u32 resolution; > + u32 frame_period; > + u32 hsync; > + u32 vsync; > + u32 padding; > +}; > + > +struct mgb4_vout_config { > + int id; > + int dma_channel; > + int irq; > + struct mgb4_vout_regs regs; > +}; > + > +struct mgb4_vout_dev { > + struct mgb4_dev *mgbdev; > + struct v4l2_device v4l2dev; > + struct video_device vdev; > + struct vb2_queue queue; > + struct mutex lock; /* vdev lock */ > + > + spinlock_t qlock; /* buffer queue lock */ > + struct list_head buf_list; > + struct work_struct dma_work; > + > + u32 width; > + u32 height; > + u32 freq; > + u32 padding; > + > + struct mgb4_i2c_client ser; > + > + const struct mgb4_vout_config *config; > + > +#ifdef CONFIG_DEBUG_FS > + struct dentry *debugfs; > + struct debugfs_regset32 regset; > + struct debugfs_reg32 regs[7]; > +#endif > +}; > + > +struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id); > +void mgb4_vout_free(struct mgb4_vout_dev *voutdev); > + > +#endif Regards, Hans

diff --git a/MAINTAINERS b/MAINTAINERS index bc201627c2e0..8ac4b4d6e8ca 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6050,6 +6050,13 @@ L: linux-gpio@vger.kernel.org S: Maintained F: drivers/gpio/gpio-gpio-mm.c +DIGITEQ AUTOMOTIVE MGB4 V4L2 DRIVER +M: Martin Tuma <martin.tuma@digiteqautomotive.com> +L: linux-media@vger.kernel.org +S: Maintained +F: Documentation/admin-guide/media/mgb4.rst +F: drivers/media/pci/mgb4/ + DIOLAN U2C-12 I2C DRIVER M: Guenter Roeck <linux@roeck-us.net> L: linux-i2c@vger.kernel.org diff --git a/drivers/media/pci/Kconfig b/drivers/media/pci/Kconfig index 480194543d05..28cea9675d71 100644 --- a/drivers/media/pci/Kconfig +++ b/drivers/media/pci/Kconfig @@ -13,6 +13,7 @@ if MEDIA_PCI_SUPPORT if MEDIA_CAMERA_SUPPORT comment "Media capture support" +source "drivers/media/pci/mgb4/Kconfig" source "drivers/media/pci/solo6x10/Kconfig" source "drivers/media/pci/sta2x11/Kconfig" source "drivers/media/pci/tw5864/Kconfig" diff --git a/drivers/media/pci/Makefile b/drivers/media/pci/Makefile index 8bed619b7130..f18c7e15abe3 100644 --- a/drivers/media/pci/Makefile +++ b/drivers/media/pci/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_VIDEO_CX25821) += cx25821/ obj-$(CONFIG_VIDEO_CX88) += cx88/ obj-$(CONFIG_VIDEO_DT3155) += dt3155/ obj-$(CONFIG_VIDEO_IVTV) += ivtv/ +obj-$(CONFIG_VIDEO_MGB4) += mgb4/ obj-$(CONFIG_VIDEO_SAA7134) += saa7134/ obj-$(CONFIG_VIDEO_SAA7164) += saa7164/ obj-$(CONFIG_VIDEO_SOLO6X10) += solo6x10/ diff --git a/drivers/media/pci/mgb4/Kconfig b/drivers/media/pci/mgb4/Kconfig new file mode 100644 index 000000000000..13fad15a434c --- /dev/null +++ b/drivers/media/pci/mgb4/Kconfig @@ -0,0 +1,17 @@ +# SPDX-License-Identifier: GPL-2.0-only +config VIDEO_MGB4 + tristate "Digiteq Automotive MGB4 support" + depends on VIDEO_DEV && PCI && I2C && DMADEVICES && SPI && MTD && IIO + select VIDEOBUF2_DMA_SG + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + select I2C_XILINX + select SPI_XILINX + select MTD_SPI_NOR + select XILINX_XDMA + help + This is a video4linux driver for Digiteq Automotive MGB4 grabber + cards. + + To compile this driver as a module, choose M here: the + module will be called mgb4. diff --git a/drivers/media/pci/mgb4/Makefile b/drivers/media/pci/mgb4/Makefile new file mode 100644 index 000000000000..e92ead18bed0 --- /dev/null +++ b/drivers/media/pci/mgb4/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +mgb4-objs := mgb4_regs.o mgb4_core.o mgb4_vin.o mgb4_vout.o \ + mgb4_sysfs_pci.o mgb4_sysfs_in.o mgb4_sysfs_out.o \ + mgb4_i2c.o mgb4_cmt.o mgb4_trigger.o mgb4_dma.o + +obj-$(CONFIG_VIDEO_MGB4) += mgb4.o diff --git a/drivers/media/pci/mgb4/mgb4_cmt.c b/drivers/media/pci/mgb4/mgb4_cmt.c new file mode 100644 index 000000000000..b8058da48b2d --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_cmt.c @@ -0,0 +1,244 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * The CMT module configures the FPGA Clock Management Tile (CMT) registers. For + * different video signal frequencies (FPGA input signal frequencies), the FPGA + * CMT registers need to be adjusted for the FPGA to work properly. The values + * are precomputed based on formulas given by Xilinx in their FPGA documentation + * (which are in turn full of some magic values/tables...). + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include "mgb4_core.h" +#include "mgb4_cmt.h" + +static const u16 cmt_vals_out[][15] = { + {0x1208, 0x0000, 0x171C, 0x0000, 0x1E38, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x124A, 0x0080, 0x0041, 0x010D, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1209, 0x0080, 0x0041, 0x013F, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x1100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1105, 0x0080, 0x1041, 0x01E8, 0x6401, 0x65E9, 0xFFFF, 0x9800, 0x1100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x00C4, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x138E, 0x0000, 0x0042, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175E, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x165A, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x171D, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1146, 0x0080, 0x1041, 0x0184, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1104, 0x0000, 0x1041, 0x01E8, 0x5801, 0x59E9, 0xFFFF, 0x9900, 0x0900, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1659, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1555, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0082, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1514, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1618, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1411, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1597, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x12CC, 0x0080, 0x0041, 0x00A9, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175E, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1492, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, +}; + +static const u16 cmt_vals_in[][13] = { + {0x1082, 0x0000, 0x5104, 0x0000, 0x11C7, 0x0000, 0x1041, 0x02BC, 0x7C01, 0xFFE9, 0x9900, 0x9908, 0x8100}, + {0x1104, 0x0000, 0x9208, 0x0000, 0x138E, 0x0000, 0x1041, 0x015E, 0x7C01, 0xFFE9, 0x0100, 0x0908, 0x1000}, +}; + +static const u32 cmt_addrs_out[][15] = { + {0x420, 0x424, 0x428, 0x42C, 0x430, 0x434, 0x450, 0x454, 0x458, 0x460, 0x464, 0x468, 0x4A0, 0x538, 0x53C}, + {0x620, 0x624, 0x628, 0x62C, 0x630, 0x634, 0x650, 0x654, 0x658, 0x660, 0x664, 0x668, 0x6A0, 0x738, 0x73C}, +}; + +static const u32 cmt_addrs_in[][13] = { + {0x020, 0x024, 0x028, 0x02C, 0x050, 0x054, 0x058, 0x060, 0x064, 0x068, 0x0A0, 0x138, 0x13C}, + {0x220, 0x224, 0x228, 0x22C, 0x250, 0x254, 0x258, 0x260, 0x264, 0x268, 0x2A0, 0x338, 0x33C}, +}; + +static const u32 cmt_freq[] = { + 25000, 25510, 26020, 26530, 26983, 27551, 28000, 28570, + 29046, 29522, 30000, 30476, 30952, 31546, 32000, 32539, + 33035, 33571, 33928, 34522, 35000, 35428, 36000, 36571, + 36904, 37500, 38093, 38571, 39047, 39453, 40000, 40476, + 40952, 41494, 41964, 42857, 43535, 44047, 44444, 45000, + 45535, 46029, 46428, 46823, 47617, 48214, 48571, 49107, + 49523, 50000, 50476, 50892, 51428, 52380, 53333, 53967, + 54285, 55238, 55555, 55952, 57142, 58095, 58571, 59047, + 59521, 60000, 60316, 60952, 61428, 61904, 62500, 63092, + 63491, 64282, 65078, 65476, 66071, 66664, 67142, 67854, + 68571, 69044, 69642, 70000, 71425, 72616, 73214, 73808, + 74285, 75000, 75714, 76187, 76785, 77142, 78570, 80000, + 80357, 80951, 81428, 82142, 82857, 83332, 83928, 84285, + 85713, 87142, 87500, 88094, 88571, 89285, 90000, 90475, + 91071, 91428, 92856, 94642, +}; + +static size_t freq_srch(u32 key, const u32 *array, size_t size) +{ + int l = 0; + int r = size - 1; + int m; + + while (l <= r) { + m = (l + r) / 2; + if (array[m] < key) + l = m + 1; + else if (array[m] > key) + r = m - 1; + else + return m; + } + + if (r < 0 || l > size - 1) + return m; + else + return (abs(key - array[l]) < abs(key - array[r])) ? l : r; +} + +u32 mgb4_cmt_set_vout_freq(struct mgb4_vout_dev *voutdev, unsigned int freq) +{ + struct mgb4_regs *video = &voutdev->mgbdev->video; + const struct mgb4_vout_regs *regs = &voutdev->config->regs; + const u16 *reg_set; + const u32 *addr; + u32 config; + size_t i, index; + + index = freq_srch(freq, cmt_freq, ARRAY_SIZE(cmt_freq)); + addr = cmt_addrs_out[voutdev->config->id]; + reg_set = cmt_vals_out[index]; + + config = mgb4_read_reg(video, regs->config); + + mgb4_write_reg(video, regs->config, 0x1 | (config & ~0x3)); + + for (i = 0; i < ARRAY_SIZE(cmt_addrs_out[0]); i++) + mgb4_write_reg(&voutdev->mgbdev->cmt, addr[i], reg_set[i]); + + mgb4_mask_reg(video, regs->config, 0x100, 0x100); + mgb4_mask_reg(video, regs->config, 0x100, 0x0); + + mgb4_write_reg(video, regs->config, config & ~0x1); + + return cmt_freq[index]; +} + +void mgb4_cmt_set_vin_freq_range(struct mgb4_vin_dev *vindev, + unsigned int freq_range) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + const struct mgb4_vin_regs *regs = &vindev->config->regs; + const u16 *reg_set; + const u32 *addr; + u32 config; + size_t i; + + addr = cmt_addrs_in[vindev->config->id]; + reg_set = cmt_vals_in[freq_range]; + + config = mgb4_read_reg(video, regs->config); + + mgb4_write_reg(video, regs->config, 0x1 | (config & ~0x3)); + + for (i = 0; i < ARRAY_SIZE(cmt_addrs_in[0]); i++) + mgb4_write_reg(&vindev->mgbdev->cmt, addr[i], reg_set[i]); + + mgb4_mask_reg(video, regs->config, 0x1000, 0x1000); + mgb4_mask_reg(video, regs->config, 0x1000, 0x0); + + mgb4_write_reg(video, regs->config, config & ~0x1); +} diff --git a/drivers/media/pci/mgb4/mgb4_cmt.h b/drivers/media/pci/mgb4/mgb4_cmt.h new file mode 100644 index 000000000000..b15df56ca059 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_cmt.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_CMT_H__ +#define __MGB4_CMT_H__ + +#include "mgb4_vout.h" +#include "mgb4_vin.h" + +u32 mgb4_cmt_set_vout_freq(struct mgb4_vout_dev *voutdev, unsigned int freq); +void mgb4_cmt_set_vin_freq_range(struct mgb4_vin_dev *vindev, + unsigned int freq_range); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c new file mode 100644 index 000000000000..33ad447c1811 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_core.c @@ -0,0 +1,711 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This is the driver for the MGB4 video grabber card by Digiteq Automotive. + * + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This is the main driver module. The DMA, I2C and SPI sub-drivers are + * initialized here and the input/output v4l2 devices are created. + * + * The mgb4 card uses different expansion modules for different video sources + * (GMSL and FPDL3 for now) so in probe() we detect the module type based on + * what we see on the I2C bus and check if it matches the FPGA bitstream (there + * are different bitstreams for different expansion modules). When no expansion + * module is present, we still let the driver initialize to allow flashing of + * the FPGA firmware using the SPI FLASH device. No v4l2 video devices are + * created in this case. + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> +#include <linux/i2c.h> +#include <linux/delay.h> +#include <linux/dma/amd_xdma.h> +#include <linux/platform_data/amd_xdma.h> +#include <linux/spi/xilinx_spi.h> +#include <linux/mtd/mtd.h> +#include <linux/hwmon.h> +#include <linux/debugfs.h> +#include "mgb4_dma.h" +#include "mgb4_i2c.h" +#include "mgb4_sysfs.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" +#include "mgb4_trigger.h" +#include "mgb4_core.h" + +#define MGB4_USER_IRQS 16 + +static int flashid; + +static struct xdma_chan_info h2c_chan_info = { + .dir = DMA_MEM_TO_DEV, +}; + +static struct xdma_chan_info c2h_chan_info = { + .dir = DMA_DEV_TO_MEM, +}; + +static struct xspi_platform_data spi_platform_data = { + .num_chipselect = 1, + .bits_per_word = 8 +}; + +static const struct i2c_board_info extender_info = { + I2C_BOARD_INFO("extender", 0x21) +}; + +#if IS_REACHABLE(CONFIG_HWMON) +static umode_t temp_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + if (type == hwmon_temp && + (attr == hwmon_temp_input || attr == hwmon_temp_label)) + return 0444; + else + return 0; +} + +static int temp_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, long *val) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 val10, raw; + + if (type == hwmon_temp && attr == hwmon_temp_input) { + raw = mgb4_read_reg(&mgbdev->video, 0xD0); + /* register value -> Celsius degrees formula given by Xilinx */ + val10 = ((((raw >> 20) & 0xFFF) * 503975) - 1118822400) / 409600; + *val = val10 * 100; + return 0; + } else { + return -EOPNOTSUPP; + } +} + +static int temp_read_string(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, const char **str) +{ + if (type == hwmon_temp && attr == hwmon_temp_label) { + *str = "FPGA Temperature"; + return 0; + } else { + return -EOPNOTSUPP; + } +} + +static const struct hwmon_ops temp_ops = { + .is_visible = temp_is_visible, + .read = temp_read, + .read_string = temp_read_string +}; + +static const struct hwmon_channel_info *temp_channel_info[] = { + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_LABEL), + NULL +}; + +static const struct hwmon_chip_info temp_chip_info = { + .ops = &temp_ops, + .info = temp_channel_info, +}; +#endif + +static int match_i2c_adap(struct device *dev, void *data) +{ + return i2c_verify_adapter(dev) ? 1 : 0; +} + +static struct i2c_adapter *get_i2c_adap(struct platform_device *pdev) +{ + struct device *dev; + + mutex_lock(&pdev->dev.mutex); + dev = device_find_child(&pdev->dev, NULL, match_i2c_adap); + mutex_unlock(&pdev->dev.mutex); + + return dev ? to_i2c_adapter(dev) : NULL; +} + +static int match_spi_adap(struct device *dev, void *data) +{ + return to_spi_device(dev) ? 1 : 0; +} + +static struct spi_master *get_spi_adap(struct platform_device *pdev) +{ + struct device *dev; + + mutex_lock(&pdev->dev.mutex); + dev = device_find_child(&pdev->dev, NULL, match_spi_adap); + mutex_unlock(&pdev->dev.mutex); + + return dev ? container_of(dev, struct spi_master, dev) : NULL; +} + +static int init_spi(struct mgb4_dev *mgbdev) +{ + struct resource spi_resources[] = { + { + .start = 0x400, + .end = 0x47f, + .flags = IORESOURCE_MEM, + .name = "io-memory", + }, + { + .start = 14, + .end = 14, + .flags = IORESOURCE_IRQ, + .name = "irq", + }, + }; + struct spi_board_info spi_info = { + .max_speed_hz = 10000000, + .modalias = "m25p80", + .chip_select = 0, + .mode = SPI_MODE_3, + }; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + struct spi_master *master; + struct spi_device *spi_dev; + u32 irq; + int rv, id; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + request_module("platform:xilinx_spi"); + + irq = xdma_get_user_irq(mgbdev->xdev, 14); + xdma_enable_user_irq(mgbdev->xdev, irq); + + spi_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID]; + spi_resources[0].start += mapbase; + spi_resources[0].end += mapbase; + spi_resources[1].start = irq; + spi_resources[1].end = irq; + + id = pci_dev_id(pdev); + mgbdev->spi_pdev = platform_device_register_resndata(dev, "xilinx_spi", + id, spi_resources, + ARRAY_SIZE(spi_resources), + &spi_platform_data, + sizeof(spi_platform_data)); + if (IS_ERR(mgbdev->spi_pdev)) { + dev_err(dev, "failed to register SPI device\n"); + return PTR_ERR(mgbdev->spi_pdev); + } + + master = get_spi_adap(mgbdev->spi_pdev); + if (!master) { + dev_err(dev, "failed to get SPI adapter\n"); + rv = -EINVAL; + goto err_pdev; + } + + snprintf(mgbdev->fw_part_name, sizeof(mgbdev->fw_part_name), + "mgb4-fw.%d", flashid); + mgbdev->partitions[0].name = mgbdev->fw_part_name; + mgbdev->partitions[0].size = 0x400000; + mgbdev->partitions[0].offset = 0x400000; + mgbdev->partitions[0].mask_flags = 0; + + snprintf(mgbdev->data_part_name, sizeof(mgbdev->data_part_name), + "mgb4-data.%d", flashid); + mgbdev->partitions[1].name = mgbdev->data_part_name; + mgbdev->partitions[1].size = 0x10000; + mgbdev->partitions[1].offset = 0xFF0000; + mgbdev->partitions[1].mask_flags = MTD_CAP_NORFLASH; + + snprintf(mgbdev->flash_name, sizeof(mgbdev->flash_name), + "mgb4-flash.%d", flashid); + mgbdev->flash_data.name = mgbdev->flash_name; + mgbdev->flash_data.parts = mgbdev->partitions; + mgbdev->flash_data.nr_parts = ARRAY_SIZE(mgbdev->partitions); + mgbdev->flash_data.type = "spi-nor"; + + spi_info.platform_data = &mgbdev->flash_data; + + spi_dev = spi_new_device(master, &spi_info); + put_device(&master->dev); + if (!spi_dev) { + dev_err(dev, "failed to create MTD device\n"); + rv = -EINVAL; + goto err_pdev; + } + + return 0; + +err_pdev: + platform_device_unregister(mgbdev->spi_pdev); + + return rv; +} + +static void free_spi(struct mgb4_dev *mgbdev) +{ + platform_device_unregister(mgbdev->spi_pdev); +} + +static int init_i2c(struct mgb4_dev *mgbdev) +{ + struct resource i2c_resources[] = { + { + .start = 0x200, + .end = 0x3ff, + .flags = IORESOURCE_MEM, + .name = "io-memory", + }, + { + .start = 15, + .end = 15, + .flags = IORESOURCE_IRQ, + .name = "irq", + }, + }; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + char clk_name[16]; + u32 irq; + int rv, id; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + request_module("platform:xiic-i2c"); + + irq = xdma_get_user_irq(mgbdev->xdev, 15); + xdma_enable_user_irq(mgbdev->xdev, irq); + + i2c_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID]; + i2c_resources[0].start += mapbase; + i2c_resources[0].end += mapbase; + i2c_resources[1].start = irq; + i2c_resources[1].end = irq; + + id = pci_dev_id(pdev); + + /* create dummy clock required by the xiic-i2c adapter */ + snprintf(clk_name, sizeof(clk_name), "xiic-i2c.%d", id); + mgbdev->i2c_clk = clk_hw_register_fixed_rate(NULL, clk_name, NULL, + 0, 125000000); + if (IS_ERR(mgbdev->i2c_clk)) { + dev_err(dev, "failed to register I2C clock\n"); + return PTR_ERR(mgbdev->i2c_clk); + } + mgbdev->i2c_cl = clkdev_hw_create(mgbdev->i2c_clk, NULL, "xiic-i2c.%d", + id); + if (!mgbdev->i2c_cl) { + dev_err(dev, "failed to register I2C clockdev\n"); + rv = -ENOMEM; + goto err_clk; + } + + mgbdev->i2c_pdev = platform_device_register_resndata(dev, "xiic-i2c", + id, i2c_resources, + ARRAY_SIZE(i2c_resources), + NULL, 0); + if (IS_ERR(mgbdev->i2c_pdev)) { + dev_err(dev, "failed to register I2C device\n"); + rv = PTR_ERR(mgbdev->i2c_pdev); + goto err_clkdev; + } + + mgbdev->i2c_adap = get_i2c_adap(mgbdev->i2c_pdev); + if (!mgbdev->i2c_adap) { + dev_err(dev, "failed to get I2C adapter\n"); + rv = -EINVAL; + goto err_pdev; + } + + mutex_init(&mgbdev->i2c_lock); + + return 0; + +err_pdev: + platform_device_unregister(mgbdev->i2c_pdev); +err_clkdev: + clkdev_drop(mgbdev->i2c_cl); +err_clk: + clk_hw_unregister(mgbdev->i2c_clk); + + return rv; +} + +static void free_i2c(struct mgb4_dev *mgbdev) +{ + put_device(&mgbdev->i2c_adap->dev); + platform_device_unregister(mgbdev->i2c_pdev); + clkdev_drop(mgbdev->i2c_cl); + clk_hw_unregister(mgbdev->i2c_clk); +} + +static int init_sysfs(struct pci_dev *pdev) +{ + struct device_attribute **attr, **eattr; + int rv; + + for (attr = mgb4_pci_attrs; *attr; attr++) { + rv = device_create_file(&pdev->dev, *attr); + if (rv < 0) + goto err_file; + } + + return 0; + +err_file: + for (eattr = mgb4_pci_attrs; eattr != attr; eattr++) + device_remove_file(&pdev->dev, *eattr); + + return rv; +} + +static void free_sysfs(struct pci_dev *pdev) +{ + struct device_attribute **attr; + + for (attr = mgb4_pci_attrs; *attr; attr++) + device_remove_file(&pdev->dev, *attr); +} + +static int get_serial_number(struct mgb4_dev *mgbdev) +{ + struct device *dev = &mgbdev->pdev->dev; + struct mtd_info *mtd; + size_t rs; + int rv; + + mgbdev->serial_number = 0; + + mtd = get_mtd_device_nm(mgbdev->data_part_name); + if (IS_ERR(mtd)) { + dev_warn(dev, "failed to get data MTD device\n"); + return -ENOENT; + } + rv = mtd_read(mtd, 0, sizeof(mgbdev->serial_number), &rs, + (u_char *)&mgbdev->serial_number); + put_mtd_device(mtd); + if (rv < 0 || rs != sizeof(mgbdev->serial_number)) { + dev_warn(dev, "error reading MTD device\n"); + return -EIO; + } + + return 0; +} + +static int get_module_version(struct mgb4_dev *mgbdev) +{ + struct device *dev = &mgbdev->pdev->dev; + struct mgb4_i2c_client extender; + s32 version; + u32 fw_version; + int rv; + + rv = mgb4_i2c_init(&extender, mgbdev->i2c_adap, &extender_info, 8); + if (rv < 0) { + dev_err(dev, "failed to create extender I2C device\n"); + return rv; + } + version = mgb4_i2c_read_byte(&extender, 0x00); + mgb4_i2c_free(&extender); + if (version < 0) { + dev_err(dev, "error reading module version\n"); + return -EIO; + } + + mgbdev->module_version = ~((u32)version) & 0xff; + if (!(MGB4_IS_FPDL3(mgbdev) || MGB4_IS_GMSL(mgbdev))) { + dev_err(dev, "unknown module type\n"); + return -EINVAL; + } + fw_version = mgb4_read_reg(&mgbdev->video, 0xC4); + if (fw_version >> 24 != mgbdev->module_version >> 4) { + dev_err(dev, "module/firmware type mismatch\n"); + return -EINVAL; + } + + dev_info(dev, "%s module detected\n", + MGB4_IS_FPDL3(mgbdev) ? "FPDL3" : "GMSL"); + + return 0; +} + +static int map_regs(struct pci_dev *pdev, struct resource *res, + struct mgb4_regs *regs) +{ + int rv; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + res->start += mapbase; + res->end += mapbase; + + rv = mgb4_regs_map(res, regs); + if (rv < 0) { + dev_err(&pdev->dev, "failed to map %s registers\n", res->name); + return rv; + } + + return 0; +} + +static int init_xdma(struct mgb4_dev *mgbdev) +{ + struct xdma_platdata data; + struct resource res[2] = { 0 }; + struct dma_slave_map *map; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int i; + + res[0].start = pci_resource_start(pdev, MGB4_XDMA_BAR_ID); + res[0].end = pci_resource_end(pdev, MGB4_XDMA_BAR_ID); + res[0].flags = IORESOURCE_MEM; + res[0].parent = &pdev->resource[MGB4_XDMA_BAR_ID]; + res[1].start = pci_irq_vector(pdev, 0); + res[1].end = res[1].start + MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES + + MGB4_USER_IRQS - 1; + res[1].flags = IORESOURCE_IRQ; + + data.max_dma_channels = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; + data.device_map = mgbdev->slave_map; + data.device_map_cnt = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + sprintf(mgbdev->channel_names[i], "c2h%d", i); + map = &data.device_map[i]; + map->slave = mgbdev->channel_names[i]; + map->devname = dev_name(dev); + map->param = XDMA_FILTER_PARAM(&c2h_chan_info); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + sprintf(mgbdev->channel_names[i + MGB4_VIN_DEVICES], "h2c%d", i); + map = &data.device_map[i + MGB4_VIN_DEVICES]; + map->slave = mgbdev->channel_names[i + MGB4_VIN_DEVICES]; + map->devname = dev_name(dev); + map->param = XDMA_FILTER_PARAM(&h2c_chan_info); + } + + mgbdev->xdev = platform_device_register_resndata(dev, "xdma", + PLATFORM_DEVID_AUTO, res, + 2, &data, sizeof(data)); + if (IS_ERR(mgbdev->xdev)) { + dev_err(dev, "failed to register XDMA device\n"); + return PTR_ERR(mgbdev->xdev); + } + + return 0; +} + +static void free_xdma(struct mgb4_dev *mgbdev) +{ + platform_device_unregister(mgbdev->xdev); +} + +static int mgb4_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + int i, rv; + struct mgb4_dev *mgbdev; + struct resource video = { + .start = 0x0, + .end = 0x100, + .flags = IORESOURCE_MEM, + .name = "mgb4-video", + }; + struct resource cmt = { + .start = 0x1000, + .end = 0x1800, + .flags = IORESOURCE_MEM, + .name = "mgb4-cmt", + }; + int irqs = pci_msix_vec_count(pdev); + + mgbdev = kzalloc(sizeof(*mgbdev), GFP_KERNEL); + if (!mgbdev) + return -ENOMEM; + + mgbdev->pdev = pdev; + pci_set_drvdata(pdev, mgbdev); + + /* PCIe related stuff */ + rv = pci_enable_device(pdev); + if (rv) { + dev_err(&pdev->dev, "error enabling PCI device\n"); + goto err_mgbdev; + } + + rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN); + if (rv) + dev_warn(&pdev->dev, "error enabling PCIe relaxed ordering\n"); + rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_EXT_TAG); + if (rv) + dev_warn(&pdev->dev, "error enabling PCIe extended tag field\n"); + rv = pcie_set_readrq(pdev, 512); + if (rv) + dev_warn(&pdev->dev, "error setting PCIe max. memory read size\n"); + pci_set_master(pdev); + + rv = pci_alloc_irq_vectors(pdev, irqs, irqs, PCI_IRQ_MSIX); + if (rv < 0) { + dev_err(&pdev->dev, "error allocating MSI-X IRQs\n"); + goto err_enable_pci; + } + + rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (rv) { + dev_err(&pdev->dev, "error setting DMA mask\n"); + goto err_enable_pci; + } + + /* DMA + IRQ engine */ + rv = init_xdma(mgbdev); + if (rv) + goto err_alloc_irq; + rv = mgb4_dma_channel_init(mgbdev); + if (rv) + goto err_dma_chan; + + /* mgb4 video registers */ + rv = map_regs(pdev, &video, &mgbdev->video); + if (rv < 0) + goto err_dma_chan; + /* mgb4 cmt registers */ + rv = map_regs(pdev, &cmt, &mgbdev->cmt); + if (rv < 0) + goto err_video_regs; + + /* SPI FLASH */ + rv = init_spi(mgbdev); + if (rv < 0) + goto err_cmt_regs; + + /* I2C controller */ + rv = init_i2c(mgbdev); + if (rv < 0) + goto err_spi; + + /* PCI card related sysfs attributes */ + rv = init_sysfs(pdev); + if (rv < 0) + goto err_i2c; + +#if IS_REACHABLE(CONFIG_HWMON) + /* HWmon (card temperature) */ + mgbdev->hwmon_dev = hwmon_device_register_with_info(&pdev->dev, "mgb4", + mgbdev, + &temp_chip_info, 0); +#endif + +#ifdef CONFIG_DEBUG_FS + mgbdev->debugfs = debugfs_create_dir(dev_name(&pdev->dev), NULL); +#endif + + /* Get card serial number. On systems without MTD flash support we may + * get an error thus ignore the return value. An invalid serial number + * should not break anything... + */ + if (get_serial_number(mgbdev) < 0) + dev_warn(&pdev->dev, "error reading card serial number\n"); + + /* Get module type. If no valid module is found, skip the video device + * creation part but do not exit with error to allow flashing the card. + */ + rv = get_module_version(mgbdev); + if (rv < 0) + goto exit; + + /* Video input v4l2 devices */ + for (i = 0; i < MGB4_VIN_DEVICES; i++) + mgbdev->vin[i] = mgb4_vin_create(mgbdev, i); + + /* Video output v4l2 devices */ + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + mgbdev->vout[i] = mgb4_vout_create(mgbdev, i); + + /* Triggers */ + mgbdev->indio_dev = mgb4_trigger_create(mgbdev); + +exit: + flashid++; + + return 0; + +err_i2c: + free_i2c(mgbdev); +err_spi: + free_spi(mgbdev); +err_cmt_regs: + mgb4_regs_free(&mgbdev->cmt); +err_video_regs: + mgb4_regs_free(&mgbdev->video); +err_dma_chan: + mgb4_dma_channel_free(mgbdev); + free_xdma(mgbdev); +err_alloc_irq: + pci_disable_msix(pdev); +err_enable_pci: + pci_disable_device(pdev); +err_mgbdev: + kfree(mgbdev); + + return rv; +} + +static void mgb4_remove(struct pci_dev *pdev) +{ + struct mgb4_dev *mgbdev = pci_get_drvdata(pdev); + int i; + +#ifdef CONFIG_DEBUG_FS + debugfs_remove_recursive(mgbdev->debugfs); +#endif +#if IS_REACHABLE(CONFIG_HWMON) + hwmon_device_unregister(mgbdev->hwmon_dev); +#endif + + if (mgbdev->indio_dev) + mgb4_trigger_free(mgbdev->indio_dev); + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (mgbdev->vout[i]) + mgb4_vout_free(mgbdev->vout[i]); + for (i = 0; i < MGB4_VIN_DEVICES; i++) + if (mgbdev->vin[i]) + mgb4_vin_free(mgbdev->vin[i]); + + free_sysfs(mgbdev->pdev); + free_spi(mgbdev); + free_i2c(mgbdev); + mgb4_regs_free(&mgbdev->video); + mgb4_regs_free(&mgbdev->cmt); + + mgb4_dma_channel_free(mgbdev); + free_xdma(mgbdev); + + pci_disable_msix(mgbdev->pdev); + pci_disable_device(mgbdev->pdev); + + kfree(mgbdev); +} + +static const struct pci_device_id mgb4_pci_ids[] = { + { PCI_DEVICE(0x1ed8, 0x0101), }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, mgb4_pci_ids); + +static struct pci_driver mgb4_pci_driver = { + .name = KBUILD_MODNAME, + .id_table = mgb4_pci_ids, + .probe = mgb4_probe, + .remove = mgb4_remove, +}; + +module_pci_driver(mgb4_pci_driver); + +MODULE_AUTHOR("Digiteq Automotive s.r.o."); +MODULE_DESCRIPTION("Digiteq Automotive MGB4 Driver"); +MODULE_LICENSE("GPL"); +MODULE_SOFTDEP("pre: platform:xiic-i2c platform:xilinx_spi spi-nor"); diff --git a/drivers/media/pci/mgb4/mgb4_core.h b/drivers/media/pci/mgb4/mgb4_core.h new file mode 100644 index 000000000000..65445c41ad56 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_core.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_CORE_H__ +#define __MGB4_CORE_H__ + +#include <linux/spi/flash.h> +#include <linux/mtd/partitions.h> +#include <linux/mutex.h> +#include <linux/dmaengine.h> +#include "mgb4_regs.h" + +#define MGB4_VIN_DEVICES 2 +#define MGB4_VOUT_DEVICES 2 + +#define MGB4_MGB4_BAR_ID 0 +#define MGB4_XDMA_BAR_ID 1 + +#define MGB4_IS_GMSL(mgbdev) \ + ((mgbdev)->module_version >> 4 == 2) +#define MGB4_IS_FPDL3(mgbdev) \ + ((mgbdev)->module_version >> 4 == 1) + +struct mgb4_dma_channel { + struct dma_chan *chan; + struct completion req_compl; +}; + +struct mgb4_dev { + struct pci_dev *pdev; + struct platform_device *xdev; + struct mgb4_vin_dev *vin[MGB4_VIN_DEVICES]; + struct mgb4_vout_dev *vout[MGB4_VOUT_DEVICES]; + + struct mgb4_dma_channel c2h_chan[MGB4_VIN_DEVICES]; + struct mgb4_dma_channel h2c_chan[MGB4_VOUT_DEVICES]; + struct dma_slave_map slave_map[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES]; + + struct mgb4_regs video; + struct mgb4_regs cmt; + + struct clk_hw *i2c_clk; + struct clk_lookup *i2c_cl; + struct platform_device *i2c_pdev; + struct i2c_adapter *i2c_adap; + struct mutex i2c_lock; /* I2C bus access lock */ + + struct platform_device *spi_pdev; + struct flash_platform_data flash_data; + struct mtd_partition partitions[2]; + char flash_name[16]; + char fw_part_name[16]; + char data_part_name[16]; + char channel_names[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES][16]; + + struct iio_dev *indio_dev; +#if IS_REACHABLE(CONFIG_HWMON) + struct device *hwmon_dev; +#endif + + u8 module_version; + u32 serial_number; + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs; +#endif +}; + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_dma.c b/drivers/media/pci/mgb4/mgb4_dma.c new file mode 100644 index 000000000000..cae888e6504b --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_dma.c @@ -0,0 +1,123 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles the DMA transfers. A standard dmaengine API as provided + * by the XDMA module is used. + */ + +#include <linux/pci.h> +#include <linux/dma-direction.h> +#include "mgb4_core.h" +#include "mgb4_dma.h" + +static void chan_irq(void *param) +{ + struct mgb4_dma_channel *chan = param; + + complete(&chan->req_compl); +} + +int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write, + u64 paddr, struct sg_table *sgt) +{ + struct dma_slave_config cfg; + struct mgb4_dma_channel *chan; + struct dma_async_tx_descriptor *tx; + struct pci_dev *pdev = mgbdev->pdev; + int ret; + + memset(&cfg, 0, sizeof(cfg)); + + if (write) { + cfg.direction = DMA_MEM_TO_DEV; + cfg.dst_addr = paddr; + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + chan = &mgbdev->h2c_chan[channel]; + } else { + cfg.direction = DMA_DEV_TO_MEM; + cfg.src_addr = paddr; + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + chan = &mgbdev->c2h_chan[channel]; + } + + ret = dmaengine_slave_config(chan->chan, &cfg); + if (ret) { + dev_err(&pdev->dev, "failed to config dma: %d\n", ret); + return ret; + } + + tx = dmaengine_prep_slave_sg(chan->chan, sgt->sgl, sgt->nents, + cfg.direction, 0); + if (!tx) { + dev_err(&pdev->dev, "failed to prep slave sg\n"); + return -EIO; + } + + tx->callback = chan_irq; + tx->callback_param = chan; + + ret = dma_submit_error(dmaengine_submit(tx)); + if (ret) { + dev_err(&pdev->dev, "failed to submit sg\n"); + return -EIO; + } + + dma_async_issue_pending(chan->chan); + + if (!wait_for_completion_timeout(&chan->req_compl, + msecs_to_jiffies(10000))) { + dev_err(&pdev->dev, "dma timeout\n"); + dmaengine_terminate_sync(chan->chan); + return -EIO; + } + + return 0; +} + +int mgb4_dma_channel_init(struct mgb4_dev *mgbdev) +{ + int i, ret; + char name[16]; + struct pci_dev *pdev = mgbdev->pdev; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + sprintf(name, "c2h%d", i); + mgbdev->c2h_chan[i].chan = dma_request_chan(&pdev->dev, name); + if (IS_ERR(mgbdev->c2h_chan[i].chan)) { + dev_err(&pdev->dev, "failed to initialize %s", name); + ret = PTR_ERR(mgbdev->c2h_chan[i].chan); + mgbdev->c2h_chan[i].chan = NULL; + return ret; + } + init_completion(&mgbdev->c2h_chan[i].req_compl); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + sprintf(name, "h2c%d", i); + mgbdev->h2c_chan[i].chan = dma_request_chan(&pdev->dev, name); + if (IS_ERR(mgbdev->h2c_chan[i].chan)) { + dev_err(&pdev->dev, "failed to initialize %s", name); + ret = PTR_ERR(mgbdev->h2c_chan[i].chan); + mgbdev->h2c_chan[i].chan = NULL; + return ret; + } + init_completion(&mgbdev->h2c_chan[i].req_compl); + } + + return 0; +} + +void mgb4_dma_channel_free(struct mgb4_dev *mgbdev) +{ + int i; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + if (mgbdev->c2h_chan[i].chan) + dma_release_channel(mgbdev->c2h_chan[i].chan); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + if (mgbdev->h2c_chan[i].chan) + dma_release_channel(mgbdev->h2c_chan[i].chan); + } +} diff --git a/drivers/media/pci/mgb4/mgb4_dma.h b/drivers/media/pci/mgb4/mgb4_dma.h new file mode 100644 index 000000000000..4ebc2b1ce9b7 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_dma.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_DMA_H__ +#define __MGB4_DMA_H__ + +#include "mgb4_core.h" + +int mgb4_dma_channel_init(struct mgb4_dev *mgbdev); +void mgb4_dma_channel_free(struct mgb4_dev *mgbdev); + +int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write, + u64 paddr, struct sg_table *sgt); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_i2c.c b/drivers/media/pci/mgb4/mgb4_i2c.c new file mode 100644 index 000000000000..2697b67e290e --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_i2c.c @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * The i2c module unifies the I2C access to the serializes/deserializes. The I2C + * chips on the GMSL module use 16b addressing, the FPDL3 chips use standard + * 8b addressing. + */ + +#include "mgb4_i2c.h" + +static int read_r16(struct i2c_client *client, u16 reg, u8 *val, int len) +{ + int ret; + u8 buf[2]; + struct i2c_msg msg[2] = { + { + .addr = client->addr, + .flags = 0, + .len = 2, + .buf = buf, + }, { + .addr = client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = val, + } + }; + + buf[0] = (reg >> 8) & 0xff; + buf[1] = (reg >> 0) & 0xff; + + ret = i2c_transfer(client->adapter, msg, 2); + if (ret < 0) + return ret; + else if (ret != 2) + return -EREMOTEIO; + else + return 0; +} + +static int write_r16(struct i2c_client *client, u16 reg, const u8 *val, int len) +{ + int ret; + u8 buf[4]; + struct i2c_msg msg[1] = { + { + .addr = client->addr, + .flags = 0, + .len = 2 + len, + .buf = buf, + } + }; + + if (2 + len > sizeof(buf)) + return -EINVAL; + + buf[0] = (reg >> 8) & 0xff; + buf[1] = (reg >> 0) & 0xff; + memcpy(&buf[2], val, len); + + ret = i2c_transfer(client->adapter, msg, 1); + if (ret < 0) + return ret; + else if (ret != 1) + return -EREMOTEIO; + else + return 0; +} + +int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap, + struct i2c_board_info const *info, int addr_size) +{ + client->client = i2c_new_client_device(adap, info); + if (IS_ERR(client->client)) + return PTR_ERR(client->client); + + client->addr_size = addr_size; + + return 0; +} + +void mgb4_i2c_free(struct mgb4_i2c_client *client) +{ + i2c_unregister_device(client->client); +} + +s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg) +{ + int ret; + u8 b; + + if (client->addr_size == 8) + return i2c_smbus_read_byte_data(client->client, reg); + + ret = read_r16(client->client, reg, &b, 1); + if (ret < 0) + return ret; + + return (s32)b; +} + +s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val) +{ + if (client->addr_size == 8) + return i2c_smbus_write_byte_data(client->client, reg, val); + else + return write_r16(client->client, reg, &val, 1); +} + +s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, u8 val) +{ + s32 ret; + + if (mask != 0xFF) { + ret = mgb4_i2c_read_byte(client, reg); + if (ret < 0) + return ret; + val |= (u8)ret & ~mask; + } + + return mgb4_i2c_write_byte(client, reg, val); +} + +int mgb4_i2c_configure(struct mgb4_i2c_client *client, + const struct mgb4_i2c_kv *values, size_t count) +{ + size_t i; + s32 res; + + for (i = 0; i < count; i++) { + res = mgb4_i2c_mask_byte(client, values[i].reg, values[i].mask, + values[i].val); + if (res < 0) + return res; + } + + return 0; +} diff --git a/drivers/media/pci/mgb4/mgb4_i2c.h b/drivers/media/pci/mgb4/mgb4_i2c.h new file mode 100644 index 000000000000..fac6a1634474 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_i2c.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_I2C_H__ +#define __MGB4_I2C_H__ + +#include <linux/i2c.h> + +struct mgb4_i2c_client { + struct i2c_client *client; + int addr_size; +}; + +struct mgb4_i2c_kv { + u16 reg; + u8 mask; + u8 val; +}; + +int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap, + struct i2c_board_info const *info, int addr_size); +void mgb4_i2c_free(struct mgb4_i2c_client *client); + +s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg); +s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val); +s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, + u8 val); + +int mgb4_i2c_configure(struct mgb4_i2c_client *client, + const struct mgb4_i2c_kv *values, size_t count); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_io.h b/drivers/media/pci/mgb4/mgb4_io.h new file mode 100644 index 000000000000..8698db1be4a9 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_io.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_IO_H__ +#define __MGB4_IO_H__ + +#include <media/v4l2-dev.h> + +#define MGB4_DEFAULT_WIDTH 1280 +#define MGB4_DEFAULT_HEIGHT 640 +#define MGB4_DEFAULT_PERIOD (125000000 / 60) + +/* Register access error indication */ +#define MGB4_ERR_NO_REG 0xFFFFFFFE +/* Frame buffer addresses greater than 0xFFFFFFFA indicate HW errors */ +#define MGB4_ERR_QUEUE_TIMEOUT 0xFFFFFFFD +#define MGB4_ERR_QUEUE_EMPTY 0xFFFFFFFC +#define MGB4_ERR_QUEUE_FULL 0xFFFFFFFB + +struct mgb4_frame_buffer { + struct vb2_v4l2_buffer vb; + struct list_head list; +}; + +static inline struct mgb4_frame_buffer *to_frame_buffer(struct vb2_v4l2_buffer *vbuf) +{ + return container_of(vbuf, struct mgb4_frame_buffer, vb); +} + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_regs.c b/drivers/media/pci/mgb4/mgb4_regs.c new file mode 100644 index 000000000000..53d4e4503a74 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_regs.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#include <linux/ioport.h> +#include "mgb4_regs.h" + +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs) +{ + regs->mapbase = res->start; + regs->mapsize = res->end - res->start; + + if (!request_mem_region(regs->mapbase, regs->mapsize, res->name)) + return -EINVAL; + regs->membase = ioremap(regs->mapbase, regs->mapsize); + if (!regs->membase) { + release_mem_region(regs->mapbase, regs->mapsize); + return -EINVAL; + } + + return 0; +} + +void mgb4_regs_free(struct mgb4_regs *regs) +{ + iounmap(regs->membase); + release_mem_region(regs->mapbase, regs->mapsize); +} diff --git a/drivers/media/pci/mgb4/mgb4_regs.h b/drivers/media/pci/mgb4/mgb4_regs.h new file mode 100644 index 000000000000..c45180890730 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_regs.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_REGS_H__ +#define __MGB4_REGS_H__ + +#include <linux/io.h> + +struct mgb4_regs { + resource_size_t mapbase; + resource_size_t mapsize; + void __iomem *membase; +}; + +#define mgb4_write_reg(regs, offset, val) \ + iowrite32(val, (regs)->membase + (offset)) +#define mgb4_read_reg(regs, offset) \ + ioread32((regs)->membase + (offset)) + +static inline void mgb4_mask_reg(struct mgb4_regs *regs, u32 reg, u32 mask, + u32 val) +{ + u32 ret = mgb4_read_reg(regs, reg); + + val |= ret & ~mask; + mgb4_write_reg(regs, reg, val); +} + +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs); +void mgb4_regs_free(struct mgb4_regs *regs); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_sysfs.h b/drivers/media/pci/mgb4/mgb4_sysfs.h new file mode 100644 index 000000000000..2b42a8ba37f7 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_SYSFS_H__ +#define __MGB4_SYSFS_H__ + +#include <linux/sysfs.h> + +extern struct device_attribute *mgb4_pci_attrs[]; +extern struct device_attribute *mgb4_fpdl3_in_attrs[]; +extern struct device_attribute *mgb4_gmsl_in_attrs[]; +extern struct device_attribute *mgb4_fpdl3_out_attrs[]; +extern struct device_attribute *mgb4_gmsl_out_attrs[]; + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_in.c b/drivers/media/pci/mgb4/mgb4_sysfs_in.c new file mode 100644 index 000000000000..4fe29158521b --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_in.c @@ -0,0 +1,757 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles all the sysfs info/configuration that is related to the + * v4l2 input devices. + */ + +#include <linux/device.h> +#include "mgb4_core.h" +#include "mgb4_i2c.h" +#include "mgb4_vin.h" +#include "mgb4_cmt.h" +#include "mgb4_sysfs.h" + +/* Common for both FPDL3 and GMSL */ + +static ssize_t read_input_id(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", vindev->config->id); +} + +static ssize_t read_oldi_lane_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + struct mgb4_dev *mgbdev = vindev->mgbdev; + u16 i2c_reg; + u8 i2c_mask, i2c_single_val, i2c_dual_val; + u32 config; + int ret; + + i2c_reg = MGB4_IS_GMSL(mgbdev) ? 0x1CE : 0x49; + i2c_mask = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x03; + i2c_single_val = MGB4_IS_GMSL(mgbdev) ? 0x00 : 0x02; + i2c_dual_val = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x00; + + mutex_lock(&mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, i2c_reg); + mutex_unlock(&mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + config = mgb4_read_reg(&mgbdev->video, vindev->config->regs.config); + + if (((config & (1U << 9)) && ((ret & i2c_mask) != i2c_dual_val)) || + (!(config & (1U << 9)) && ((ret & i2c_mask) != i2c_single_val))) { + dev_err(dev, "I2C/FPGA register value mismatch\n"); + return -EINVAL; + } + + return sprintf(buf, "%s\n", config & (1U << 9) ? "1" : "0"); +} + +static ssize_t write_oldi_lane_width(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + struct mgb4_dev *mgbdev = vindev->mgbdev; + u32 fpga_data; + u16 i2c_reg; + u8 i2c_mask, i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* single */ + fpga_data = 0; + i2c_data = MGB4_IS_GMSL(mgbdev) ? 0x00 : 0x02; + break; + case 1: /* dual */ + fpga_data = 1U << 9; + i2c_data = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x00; + break; + default: + return -EINVAL; + } + + i2c_reg = MGB4_IS_GMSL(mgbdev) ? 0x1CE : 0x49; + i2c_mask = MGB4_IS_GMSL(mgbdev) ? 0x0E : 0x03; + + mutex_lock(&mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, i2c_reg, i2c_mask, i2c_data); + mutex_unlock(&mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + mgb4_mask_reg(&mgbdev->video, vindev->config->regs.config, 1U << 9, + fpga_data); + if (MGB4_IS_GMSL(mgbdev)) { + /* reset input link */ + mutex_lock(&mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0x10, 1U << 5, 1U << 5); + mutex_unlock(&mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + } + + return count; +} + +static ssize_t read_color_mapping(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.config); + + return sprintf(buf, "%s\n", config & (1U << 8) ? "0" : "1"); +} + +static ssize_t write_color_mapping(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 fpga_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* OLDI/JEIDA */ + fpga_data = (1U << 8); + break; + case 1: /* SPWG/VESA */ + fpga_data = 0; + break; + default: + return -EINVAL; + } + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 1U << 8, fpga_data); + + return count; +} + +static ssize_t read_link_status(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.status); + + return sprintf(buf, "%s\n", status & (1U << 2) ? "1" : "0"); +} + +static ssize_t read_stream_status(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.status); + + return sprintf(buf, "%s\n", ((status & (1 << 14)) && + (status & (1 << 2)) && (status & (3 << 9))) ? "1" : "0"); +} + +static ssize_t read_video_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.resolution); + + return sprintf(buf, "%u\n", config >> 16); +} + +static ssize_t read_video_height(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.resolution); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t read_hsync_status(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.status); + u32 res; + + if (!(status & (1U << 11))) + res = 0x02; // not available + else if (status & (1U << 12)) + res = 0x01; // active high + else + res = 0x00; // active low + + return sprintf(buf, "%u\n", res); +} + +static ssize_t read_vsync_status(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.status); + u32 res; + + if (!(status & (1U << 11))) + res = 0x02; // not available + else if (status & (1U << 13)) + res = 0x01; // active high + else + res = 0x00; // active low + + return sprintf(buf, "%u\n", res); +} + +static ssize_t read_hsync_gap(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sync = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.sync); + + return sprintf(buf, "%u\n", sync >> 16); +} + +static ssize_t write_hsync_gap(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, + 0xFFFF0000, val << 16); + + return count; +} + +static ssize_t read_vsync_gap(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sync = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.sync); + + return sprintf(buf, "%u\n", sync & 0xFFFF); +} + +static ssize_t write_vsync_gap(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, 0xFFFF, + val); + + return count; +} + +static ssize_t read_pclk_frequency(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 freq = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.pclk); + + return sprintf(buf, "%u\n", freq); +} + +static ssize_t read_hsync_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t read_vsync_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t read_hback_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t read_hfront_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t read_vback_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t read_vfront_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t read_frequency_range(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", vindev->freq_range); +} + +static ssize_t write_frequency_range(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + spin_lock_irqsave(&vindev->vdev.fh_lock, flags); + if (!list_empty(&vindev->vdev.fh_list)) { + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); + return -EBUSY; + } + + mgb4_cmt_set_vin_freq_range(vindev, val); + vindev->freq_range = val; + + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); + + return count; +} + +/* FPDL3 only */ + +static ssize_t read_fpdl3_input_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, 0x34); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + switch ((u8)ret & 0x18) { + case 0: + return sprintf(buf, "0\n"); + case 0x10: + return sprintf(buf, "1\n"); + case 0x08: + return sprintf(buf, "2\n"); + default: + return -EINVAL; + } +} + +static ssize_t write_fpdl3_input_width(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u8 i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* auto */ + i2c_data = 0x00; + break; + case 1: /* single */ + i2c_data = 0x10; + break; + case 2: /* dual */ + i2c_data = 0x08; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0x34, 0x18, i2c_data); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +/* GMSL only */ + +static ssize_t read_gmsl_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 r1, r300, r3; + + mutex_lock(&vindev->mgbdev->i2c_lock); + r1 = mgb4_i2c_read_byte(&vindev->deser, 0x01); + r300 = mgb4_i2c_read_byte(&vindev->deser, 0x300); + r3 = mgb4_i2c_read_byte(&vindev->deser, 0x03); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (r1 < 0 || r300 < 0 || r3 < 0) + return -EIO; + + if ((r1 & 0x03) == 0x03 && (r300 & 0x0C) == 0x0C && (r3 & 0xC0) == 0xC0) + return sprintf(buf, "0\n"); + else if ((r1 & 0x03) == 0x02 && (r300 & 0x0C) == 0x08 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "1\n"); + else if ((r1 & 0x03) == 0x01 && (r300 & 0x0C) == 0x04 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "2\n"); + else if ((r1 & 0x03) == 0x00 && (r300 & 0x0C) == 0x00 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "3\n"); + else + return -EINVAL; +} + +static ssize_t write_gmsl_mode(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + static const struct mgb4_i2c_kv G12[] = { + {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}}; + static const struct mgb4_i2c_kv G6[] = { + {0x01, 0x03, 0x02}, {0x300, 0x0C, 0x08}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv G3[] = { + {0x01, 0x03, 0x01}, {0x300, 0x0C, 0x04}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv G1[] = { + {0x01, 0x03, 0x00}, {0x300, 0x0C, 0x00}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv reset[] = { + {0x10, 1U << 5, 1U << 5}, {0x300, 1U << 6, 1U << 6}}; + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + const struct mgb4_i2c_kv *values; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* 12Gb/s */ + values = G12; + break; + case 1: /* 6Gb/s */ + values = G6; + break; + case 2: /* 3Gb/s */ + values = G3; + break; + case 3: /* 1.5Gb/s */ + values = G1; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_configure(&vindev->deser, values, 3); + ret |= mgb4_i2c_configure(&vindev->deser, reset, 2); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static ssize_t read_gmsl_stream_id(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, 0xA0); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return sprintf(buf, "%d\n", ret & 0x03); +} + +static ssize_t write_gmsl_stream_id(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 3) + return -EINVAL; + + spin_lock_irqsave(&vindev->vdev.fh_lock, flags); + ret = list_empty(&vindev->vdev.fh_list); + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); + if (!ret) + return -EBUSY; + + /* Formaly, there is a race condition here as the change should also be + * done under the spinlock above, but we only want to prevent + * a resolution change while the device is in use. However, resolution + * changes can happen anyway and the driver can handle them (they only + * break the image, not the system). + * + * So instead of trying to workaround the spinlock - mgb4_i2c_mask_byte() + * does sleep - we simply let the rare race condition happen... + */ + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0xA0, 0x03, (u8)val); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static ssize_t read_gmsl_fec(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 r3e0, r308; + + mutex_lock(&vindev->mgbdev->i2c_lock); + r3e0 = mgb4_i2c_read_byte(&vindev->deser, 0x3E0); + r308 = mgb4_i2c_read_byte(&vindev->deser, 0x308); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (r3e0 < 0 || r308 < 0) + return -EIO; + + if ((r3e0 & 0x07) == 0x00 && (r308 & 0x01) == 0x00) + return sprintf(buf, "0\n"); + else if ((r3e0 & 0x07) == 0x07 && (r308 & 0x01) == 0x01) + return sprintf(buf, "1\n"); + else + return -EINVAL; +} + +static ssize_t write_gmsl_fec(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + static const struct mgb4_i2c_kv enable[] = { + {0x3E0, 0x07, 0x07}, {0x308, 0x01, 0x01}}; + static const struct mgb4_i2c_kv disable[] = { + {0x3E0, 0x07, 0x00}, {0x308, 0x01, 0x00}}; + static const struct mgb4_i2c_kv reset[] = { + {0x10, 1U << 5, 1U << 5}, {0x300, 1U << 6, 1U << 6}}; + const struct mgb4_i2c_kv *values; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* disabled */ + values = disable; + break; + case 1: /* enabled */ + values = enable; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_configure(&vindev->deser, values, 2); + ret |= mgb4_i2c_configure(&vindev->deser, reset, 2); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static DEVICE_ATTR(input_id, 0444, read_input_id, NULL); +static DEVICE_ATTR(oldi_lane_width, 0644, read_oldi_lane_width, + write_oldi_lane_width); +static DEVICE_ATTR(color_mapping, 0644, read_color_mapping, + write_color_mapping); +static DEVICE_ATTR(link_status, 0444, read_link_status, NULL); +static DEVICE_ATTR(stream_status, 0444, read_stream_status, NULL); +static DEVICE_ATTR(video_width, 0444, read_video_width, NULL); +static DEVICE_ATTR(video_height, 0444, read_video_height, NULL); +static DEVICE_ATTR(hsync_status, 0444, read_hsync_status, NULL); +static DEVICE_ATTR(vsync_status, 0444, read_vsync_status, NULL); +static DEVICE_ATTR(hsync_gap_length, 0644, read_hsync_gap, write_hsync_gap); +static DEVICE_ATTR(vsync_gap_length, 0644, read_vsync_gap, write_vsync_gap); +static DEVICE_ATTR(pclk_frequency, 0444, read_pclk_frequency, NULL); +static DEVICE_ATTR(hsync_width, 0444, read_hsync_width, NULL); +static DEVICE_ATTR(vsync_width, 0444, read_vsync_width, NULL); +static DEVICE_ATTR(hback_porch, 0444, read_hback_porch, NULL); +static DEVICE_ATTR(hfront_porch, 0444, read_hfront_porch, NULL); +static DEVICE_ATTR(vback_porch, 0444, read_vback_porch, NULL); +static DEVICE_ATTR(vfront_porch, 0444, read_vfront_porch, NULL); +static DEVICE_ATTR(frequency_range, 0644, read_frequency_range, + write_frequency_range); + +static DEVICE_ATTR(fpdl3_input_width, 0644, read_fpdl3_input_width, + write_fpdl3_input_width); + +static DEVICE_ATTR(gmsl_mode, 0644, read_gmsl_mode, write_gmsl_mode); +static DEVICE_ATTR(gmsl_stream_id, 0644, read_gmsl_stream_id, + write_gmsl_stream_id); +static DEVICE_ATTR(gmsl_fec, 0644, read_gmsl_fec, write_gmsl_fec); + +struct device_attribute *mgb4_fpdl3_in_attrs[] = { + &dev_attr_input_id, + &dev_attr_link_status, + &dev_attr_stream_status, + &dev_attr_video_width, + &dev_attr_video_height, + &dev_attr_hsync_status, + &dev_attr_vsync_status, + &dev_attr_oldi_lane_width, + &dev_attr_color_mapping, + &dev_attr_hsync_gap_length, + &dev_attr_vsync_gap_length, + &dev_attr_pclk_frequency, + &dev_attr_hsync_width, + &dev_attr_vsync_width, + &dev_attr_hback_porch, + &dev_attr_hfront_porch, + &dev_attr_vback_porch, + &dev_attr_vfront_porch, + &dev_attr_frequency_range, + &dev_attr_fpdl3_input_width, + NULL +}; + +struct device_attribute *mgb4_gmsl_in_attrs[] = { + &dev_attr_input_id, + &dev_attr_link_status, + &dev_attr_stream_status, + &dev_attr_video_width, + &dev_attr_video_height, + &dev_attr_hsync_status, + &dev_attr_vsync_status, + &dev_attr_oldi_lane_width, + &dev_attr_color_mapping, + &dev_attr_hsync_gap_length, + &dev_attr_vsync_gap_length, + &dev_attr_pclk_frequency, + &dev_attr_hsync_width, + &dev_attr_vsync_width, + &dev_attr_hback_porch, + &dev_attr_hfront_porch, + &dev_attr_vback_porch, + &dev_attr_vfront_porch, + &dev_attr_frequency_range, + &dev_attr_gmsl_mode, + &dev_attr_gmsl_stream_id, + &dev_attr_gmsl_fec, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_out.c b/drivers/media/pci/mgb4/mgb4_sysfs_out.c new file mode 100644 index 000000000000..243a654f75ad --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_out.c @@ -0,0 +1,700 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles all the sysfs info/configuration that is related to the + * v4l2 output devices. + */ + +#include <linux/device.h> +#include "mgb4_core.h" +#include "mgb4_i2c.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" +#include "mgb4_cmt.h" +#include "mgb4_sysfs.h" + +static int loopin_cnt(struct mgb4_vin_dev *vindev) +{ + struct mgb4_vout_dev *voutdev; + u32 config; + int i, cnt = 0; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + voutdev = vindev->mgbdev->vout[i]; + if (!voutdev) + continue; + + config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.config); + if ((config & 0xc) >> 2 == vindev->config->id) + cnt++; + } + + return cnt; +} + +/* Common for both FPDL3 and GMSL */ + +static ssize_t read_output_id(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", voutdev->config->id); +} + +static ssize_t read_video_source(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.config); + + return sprintf(buf, "%u\n", (config & 0xc) >> 2); +} + +static ssize_t write_video_source(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + struct mgb4_dev *mgbdev = voutdev->mgbdev; + struct mgb4_vin_dev *loopin_new = 0, *loopin_old = 0; + unsigned long val; + unsigned long flags_in[MGB4_VIN_DEVICES], flags_out[MGB4_VOUT_DEVICES]; + ssize_t ret; + u32 config; + int i; + + memset(flags_in, 0, sizeof(flags_in)); + memset(flags_out, 0, sizeof(flags_out)); + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 3) + return -EINVAL; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) + if (mgbdev->vin[i]) + spin_lock_irqsave(&mgbdev->vin[i]->vdev.fh_lock, + flags_in[i]); + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (mgbdev->vout[i]) + spin_lock_irqsave(&mgbdev->vout[i]->vdev.fh_lock, + flags_out[i]); + + ret = -EBUSY; + for (i = 0; i < MGB4_VIN_DEVICES; i++) + if (mgbdev->vin[i] && !list_empty(&mgbdev->vin[i]->vdev.fh_list)) + goto error; + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (mgbdev->vout[i] && !list_empty(&mgbdev->vout[i]->vdev.fh_list)) + goto error; + + config = mgb4_read_reg(&mgbdev->video, voutdev->config->regs.config); + + if (((config & 0xc) >> 2) < MGB4_VIN_DEVICES) + loopin_old = mgbdev->vin[(config & 0xc) >> 2]; + if (val < MGB4_VIN_DEVICES) + loopin_new = mgbdev->vin[val]; + if (loopin_old && loopin_cnt(loopin_old) == 1) + mgb4_mask_reg(&mgbdev->video, loopin_old->config->regs.config, + 0x2, 0x0); + if (loopin_new) + mgb4_mask_reg(&mgbdev->video, loopin_new->config->regs.config, + 0x2, 0x2); + + if (val == voutdev->config->id + MGB4_VIN_DEVICES) + mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config, + config & ~(1 << 1)); + else + mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config, + config | (1U << 1)); + + mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0xc, + val << 2); + + ret = count; + +error: + for (i = MGB4_VOUT_DEVICES - 1; i >= 0; i--) + if (mgbdev->vout[i]) + spin_unlock_irqrestore(&mgbdev->vout[i]->vdev.fh_lock, + flags_out[i]); + for (i = MGB4_VIN_DEVICES - 1; i >= 0; i--) + if (mgbdev->vin[i]) + spin_unlock_irqrestore(&mgbdev->vin[i]->vdev.fh_lock, + flags_in[i]); + + return ret; +} + +static ssize_t read_display_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.resolution); + + return sprintf(buf, "%u\n", config >> 16); +} + +static ssize_t write_display_width(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret, busy; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); + busy = !list_empty(&voutdev->vdev.fh_list); + if (busy) { + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + return -EBUSY; + } + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution, + 0xFFFF0000, val << 16); + + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + + return count; +} + +static ssize_t read_display_height(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.resolution); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t write_display_height(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret, busy; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); + busy = !list_empty(&voutdev->vdev.fh_list); + if (busy) { + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + return -EBUSY; + } + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution, + 0xFFFF, val); + + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + + return count; +} + +static ssize_t read_frame_rate(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 period = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.frame_period); + + return sprintf(buf, "%u\n", 125000000 / period); +} + +static ssize_t write_frame_rate(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + mgb4_write_reg(&voutdev->mgbdev->video, + voutdev->config->regs.frame_period, 125000000 / val); + + return count; +} + +static ssize_t read_hsync_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t write_hsync_width(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x00FF0000, val << 16); + + return count; +} + +static ssize_t read_vsync_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t write_vsync_width(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x00FF0000, val << 16); + + return count; +} + +static ssize_t read_hback_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t write_hback_porch(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x0000FF00, val << 8); + + return count; +} + +static ssize_t read_vback_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t write_vback_porch(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x0000FF00, val << 8); + + return count; +} + +static ssize_t read_hfront_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t write_hfront_porch(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x000000FF, val); + + return count; +} + +static ssize_t read_vfront_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t write_vfront_porch(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x000000FF, val); + + return count; +} + +/* FPDL3 only */ + +static ssize_t read_hsync_polarity(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (config & (1U << 31)) >> 31); +} + +static ssize_t write_hsync_polarity(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + (1U << 31), val << 31); + + return count; +} + +static ssize_t read_vsync_polarity(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (config & (1U << 31)) >> 31); +} + +static ssize_t write_vsync_polarity(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + (1U << 31), val << 31); + + return count; +} + +static ssize_t read_de_polarity(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (config & (1U << 30)) >> 30); +} + +static ssize_t write_de_polarity(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + (1U << 30), val << 30); + + return count; +} + +static ssize_t read_fpdl3_output_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&voutdev->ser, 0x5B); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + switch ((u8)ret & 0x03) { + case 0: + return sprintf(buf, "0\n"); + case 1: + return sprintf(buf, "1\n"); + case 3: + return sprintf(buf, "2\n"); + default: + return -EINVAL; + } +} + +static ssize_t write_fpdl3_output_width(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u8 i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* auto */ + i2c_data = 0x00; + break; + case 1: /* single */ + i2c_data = 0x01; + break; + case 2: /* dual */ + i2c_data = 0x03; + break; + default: + return -EINVAL; + } + + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x5B, 0x03, i2c_data); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static ssize_t read_pclk_frequency(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + + return sprintf(buf, "%u\n", voutdev->freq); +} + +static ssize_t write_pclk_frequency(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret, busy; + unsigned int dp; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); + busy = !list_empty(&voutdev->vdev.fh_list); + if (busy) { + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + return -EBUSY; + } + + dp = (val > 50000) ? 1 : 0; + voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, val >> dp) << dp; + + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, + 0x10, dp << 4); + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x4F, 1 << 6, ((~dp) & 1) << 6); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static DEVICE_ATTR(output_id, 0444, read_output_id, NULL); +static DEVICE_ATTR(video_source, 0644, read_video_source, write_video_source); +static DEVICE_ATTR(display_width, 0644, read_display_width, + write_display_width); +static DEVICE_ATTR(display_height, 0644, read_display_height, + write_display_height); +static DEVICE_ATTR(frame_rate, 0644, read_frame_rate, write_frame_rate); +static DEVICE_ATTR(hsync_polarity, 0644, read_hsync_polarity, + write_hsync_polarity); +static DEVICE_ATTR(vsync_polarity, 0644, read_vsync_polarity, + write_vsync_polarity); +static DEVICE_ATTR(de_polarity, 0644, read_de_polarity, + write_de_polarity); +static DEVICE_ATTR(pclk_frequency, 0644, read_pclk_frequency, + write_pclk_frequency); +static DEVICE_ATTR(hsync_width, 0644, read_hsync_width, write_hsync_width); +static DEVICE_ATTR(vsync_width, 0644, read_vsync_width, write_vsync_width); +static DEVICE_ATTR(hback_porch, 0644, read_hback_porch, write_hback_porch); +static DEVICE_ATTR(hfront_porch, 0644, read_hfront_porch, write_hfront_porch); +static DEVICE_ATTR(vback_porch, 0644, read_vback_porch, write_vback_porch); +static DEVICE_ATTR(vfront_porch, 0644, read_vfront_porch, write_vfront_porch); + +static DEVICE_ATTR(fpdl3_output_width, 0644, read_fpdl3_output_width, + write_fpdl3_output_width); + +struct device_attribute *mgb4_fpdl3_out_attrs[] = { + &dev_attr_output_id, + &dev_attr_video_source, + &dev_attr_display_width, + &dev_attr_display_height, + &dev_attr_frame_rate, + &dev_attr_hsync_polarity, + &dev_attr_vsync_polarity, + &dev_attr_de_polarity, + &dev_attr_pclk_frequency, + &dev_attr_hsync_width, + &dev_attr_vsync_width, + &dev_attr_hback_porch, + &dev_attr_hfront_porch, + &dev_attr_vback_porch, + &dev_attr_vfront_porch, + &dev_attr_fpdl3_output_width, + NULL +}; + +struct device_attribute *mgb4_gmsl_out_attrs[] = { + &dev_attr_output_id, + &dev_attr_video_source, + &dev_attr_display_width, + &dev_attr_display_height, + &dev_attr_frame_rate, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_pci.c b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c new file mode 100644 index 000000000000..f98da2c5f180 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles all the sysfs info/configuration that is related to the + * PCI card device. + */ + +#include <linux/device.h> +#include "mgb4_core.h" +#include "mgb4_sysfs.h" + +static ssize_t read_module_version(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + + return sprintf(buf, "%u\n", mgbdev->module_version & 0x0F); +} + +static ssize_t read_module_type(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + + return sprintf(buf, "%u\n", mgbdev->module_version >> 4); +} + +static ssize_t read_fw_version(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 config = mgb4_read_reg(&mgbdev->video, 0xC4); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t read_fw_type(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 config = mgb4_read_reg(&mgbdev->video, 0xC4); + + return sprintf(buf, "%u\n", config >> 24); +} + +static ssize_t read_serial_number(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 sn = mgbdev->serial_number; + + return sprintf(buf, "%03d-%03d-%03d-%03d\n", sn >> 24, (sn >> 16) & 0xFF, + (sn >> 8) & 0xFF, sn & 0xFF); +} + +static DEVICE_ATTR(module_version, 0444, read_module_version, NULL); +static DEVICE_ATTR(module_type, 0444, read_module_type, NULL); +static DEVICE_ATTR(fw_version, 0444, read_fw_version, NULL); +static DEVICE_ATTR(fw_type, 0444, read_fw_type, NULL); +static DEVICE_ATTR(serial_number, 0444, read_serial_number, NULL); + +struct device_attribute *mgb4_pci_attrs[] = { + &dev_attr_module_type, + &dev_attr_module_version, + &dev_attr_fw_type, + &dev_attr_fw_version, + &dev_attr_serial_number, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_trigger.c b/drivers/media/pci/mgb4/mgb4_trigger.c new file mode 100644 index 000000000000..923650d53d4c --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_trigger.c @@ -0,0 +1,208 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This module handles the IIO trigger device. The card has two signal inputs + * for event triggers that can be used to record events related to the video + * stream. A standard linux IIO device with triggered buffer capability is + * created and configured that can be used to fetch the events with the same + * clock source as the video frames. + */ + +#include <linux/iio/iio.h> +#include <linux/iio/buffer.h> +#include <linux/iio/trigger.h> +#include <linux/iio/trigger_consumer.h> +#include <linux/iio/triggered_buffer.h> +#include <linux/pci.h> +#include <linux/dma/amd_xdma.h> +#include "mgb4_core.h" +#include "mgb4_trigger.h" + +struct trigger_data { + struct mgb4_dev *mgbdev; + struct iio_trigger *trig; +}; + +static int trigger_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct trigger_data *st = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + *val = mgb4_read_reg(&st->mgbdev->video, 0xA0); + + return IIO_VAL_INT; + } + + return -EINVAL; +} + +static int trigger_set_state(struct iio_trigger *trig, bool state) +{ + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); + struct trigger_data *st = iio_priv(indio_dev); + int irq = xdma_get_user_irq(st->mgbdev->xdev, 11); + + if (state) + xdma_enable_user_irq(st->mgbdev->xdev, irq); + else + xdma_disable_user_irq(st->mgbdev->xdev, irq); + + return 0; +} + +static const struct iio_trigger_ops trigger_ops = { + .set_trigger_state = &trigger_set_state, +}; + +static const struct iio_info trigger_info = { + .read_raw = trigger_read_raw, +}; + +#define TRIGGER_CHANNEL(_si) { \ + .type = IIO_ACTIVITY, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .scan_index = _si, \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 32, \ + .storagebits = 32, \ + .shift = 0, \ + .endianness = IIO_CPU \ + }, \ +} + +static const struct iio_chan_spec trigger_channels[] = { + TRIGGER_CHANNEL(0), + IIO_CHAN_SOFT_TIMESTAMP(1), +}; + +static irqreturn_t trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct trigger_data *st = iio_priv(indio_dev); + struct { + u32 data; + s64 ts __aligned(8); + } scan; + + scan.data = mgb4_read_reg(&st->mgbdev->video, 0xA0); + mgb4_write_reg(&st->mgbdev->video, 0xA0, scan.data); + + iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp); + iio_trigger_notify_done(indio_dev->trig); + + mgb4_write_reg(&st->mgbdev->video, 0xB4, 1U << 11); + + return IRQ_HANDLED; +} + +static int probe_trigger(struct iio_dev *indio_dev, int irq) +{ + int ret; + struct trigger_data *st = iio_priv(indio_dev); + + st->trig = iio_trigger_alloc(&st->mgbdev->pdev->dev, "%s-dev%d", + indio_dev->name, iio_device_id(indio_dev)); + if (!st->trig) + return -ENOMEM; + + ret = request_irq(irq, &iio_trigger_generic_data_rdy_poll, 0, + "mgb4-trigger", st->trig); + if (ret) + goto error_free_trig; + + st->trig->ops = &trigger_ops; + iio_trigger_set_drvdata(st->trig, indio_dev); + ret = iio_trigger_register(st->trig); + if (ret) + goto error_free_irq; + + indio_dev->trig = iio_trigger_get(st->trig); + + return 0; + +error_free_irq: + free_irq(irq, st->trig); +error_free_trig: + iio_trigger_free(st->trig); + + return ret; +} + +static void remove_trigger(struct iio_dev *indio_dev, int irq) +{ + struct trigger_data *st = iio_priv(indio_dev); + + iio_trigger_unregister(st->trig); + free_irq(irq, st->trig); + iio_trigger_free(st->trig); +} + +struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev) +{ + struct iio_dev *indio_dev; + struct trigger_data *data; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int rv, irq; + + indio_dev = iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return NULL; + + indio_dev->info = &trigger_info; + indio_dev->name = "mgb4"; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = trigger_channels; + indio_dev->num_channels = ARRAY_SIZE(trigger_channels); + + data = iio_priv(indio_dev); + data->mgbdev = mgbdev; + + irq = xdma_get_user_irq(mgbdev->xdev, 11); + rv = probe_trigger(indio_dev, irq); + if (rv < 0) { + dev_err(dev, "iio triggered setup failed\n"); + goto error_alloc; + } + rv = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, + trigger_handler, NULL); + if (rv < 0) { + dev_err(dev, "iio triggered buffer setup failed\n"); + goto error_trigger; + } + rv = iio_device_register(indio_dev); + if (rv < 0) { + dev_err(dev, "iio device register failed\n"); + goto error_buffer; + } + + return indio_dev; + +error_buffer: + iio_triggered_buffer_cleanup(indio_dev); +error_trigger: + remove_trigger(indio_dev, irq); +error_alloc: + iio_device_free(indio_dev); + + return NULL; +} + +void mgb4_trigger_free(struct iio_dev *indio_dev) +{ + struct trigger_data *st = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); + remove_trigger(indio_dev, xdma_get_user_irq(st->mgbdev->xdev, 11)); + iio_device_free(indio_dev); +} diff --git a/drivers/media/pci/mgb4/mgb4_trigger.h b/drivers/media/pci/mgb4/mgb4_trigger.h new file mode 100644 index 000000000000..6c25bc4576f6 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_trigger.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev); +void mgb4_trigger_free(struct iio_dev *indio_dev); diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c new file mode 100644 index 000000000000..4712e966595a --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vin.c @@ -0,0 +1,930 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This is the v4l2 input device module. It initializes the signal deserializers + * and creates the v4l2 video devices. The input signal can change at any time + * which is handled by the "timings" callbacks and an IRQ based watcher, that + * emits the V4L2_EVENT_SOURCE_CHANGE event in case of a signal source change. + * + * When the device is in loopback mode (a direct, in HW, in->out frame passing + * mode) the card's frame queue must be running regardless of whether a v4l2 + * stream is running and the output parameters like frame buffers padding must + * be in sync with the input parameters. + */ + +#include <linux/pci.h> +#include <linux/workqueue.h> +#include <linux/align.h> +#include <linux/dma/amd_xdma.h> +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-v4l2.h> +#include <media/videobuf2-dma-sg.h> +#include <media/v4l2-dv-timings.h> +#include <media/v4l2-event.h> +#include "mgb4_core.h" +#include "mgb4_dma.h" +#include "mgb4_sysfs.h" +#include "mgb4_io.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" + +static const struct mgb4_vin_config vin_cfg[] = { + {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28}}, + {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58}} +}; + +static const struct i2c_board_info fpdl3_deser_info[] = { + {I2C_BOARD_INFO("deserializer1", 0x38)}, + {I2C_BOARD_INFO("deserializer2", 0x36)}, +}; + +static const struct i2c_board_info gmsl_deser_info[] = { + {I2C_BOARD_INFO("deserializer1", 0x4C)}, + {I2C_BOARD_INFO("deserializer2", 0x2A)}, +}; + +static const struct mgb4_i2c_kv fpdl3_i2c[] = { + {0x06, 0xFF, 0x04}, {0x07, 0xFF, 0x01}, {0x45, 0xFF, 0xE8}, + {0x49, 0xFF, 0x00}, {0x34, 0xFF, 0x00}, {0x23, 0xFF, 0x00} +}; + +static const struct mgb4_i2c_kv gmsl_i2c[] = { + {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}, + {0x1CE, 0x0E, 0x0E}, {0x11, 0x05, 0x00}, {0x05, 0xC0, 0x40}, + {0x307, 0x0F, 0x00}, {0xA0, 0x03, 0x00}, {0x3E0, 0x07, 0x07}, + {0x308, 0x01, 0x01}, {0x10, 0x20, 0x20}, {0x300, 0x40, 0x40} +}; + +static const struct v4l2_dv_timings_cap video_timings_cap = { + .type = V4L2_DV_BT_656_1120, + .bt = { + .min_width = 320, + .max_width = 4096, + .min_height = 240, + .max_height = 2160, + .min_pixelclock = 1843200, /* 320 x 240 x 24Hz */ + .max_pixelclock = 530841600, /* 4096 x 2160 x 60Hz */ + .standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | + V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF, + .capabilities = V4L2_DV_BT_CAP_PROGRESSIVE | + V4L2_DV_BT_CAP_CUSTOM, + }, +}; + +/* + * Returns the video output connected with the given video input if the input + * is in loopback mode. + */ +static struct mgb4_vout_dev *loopback_dev(struct mgb4_vin_dev *vindev, int i) +{ + struct mgb4_vout_dev *voutdev; + u32 config; + + voutdev = vindev->mgbdev->vout[i]; + if (!voutdev) + return NULL; + + config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.config); + if ((config & 0xc) >> 2 == vindev->config->id) + return voutdev; + + return NULL; +} + +/* + * Check, whether the loopback mode - a HW INPUT->OUTPUT transmission - is + * enabled on the given input. + */ +static int loopback_active(struct mgb4_vin_dev *vindev) +{ + int i; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (loopback_dev(vindev, i)) + return 1; + + return 0; +} + +/* + * Set the output frame buffer padding of all outputs connected with the given + * input when the video input is set to loopback mode. The paddings must be + * the same for the loopback to work properly. + */ +static void set_loopback_padding(struct mgb4_vin_dev *vindev, u32 padding) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + struct mgb4_vout_dev *voutdev; + int i; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + voutdev = loopback_dev(vindev, i); + if (voutdev) + mgb4_write_reg(video, voutdev->config->regs.padding, + padding); + } +} + +static int get_timings(struct mgb4_vin_dev *vindev, + struct v4l2_dv_timings *timings) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + const struct mgb4_vin_regs *regs = &vindev->config->regs; + + u32 status = mgb4_read_reg(video, regs->status); + u32 pclk = mgb4_read_reg(video, regs->pclk); + u32 signal = mgb4_read_reg(video, regs->signal); + u32 signal2 = mgb4_read_reg(video, regs->signal2); + u32 resolution = mgb4_read_reg(video, regs->resolution); + + if (!(status & (1U << 2))) + return -ENOLCK; + if (!(status & (3 << 9))) + return -ENOLINK; + + memset(timings, 0, sizeof(*timings)); + timings->type = V4L2_DV_BT_656_1120; + timings->bt.width = resolution >> 16; + timings->bt.height = resolution & 0xFFFF; + if (status & (1U << 12)) + timings->bt.polarities |= V4L2_DV_HSYNC_POS_POL; + if (status & (1U << 13)) + timings->bt.polarities |= V4L2_DV_VSYNC_POS_POL; + timings->bt.pixelclock = pclk * 1000; + timings->bt.hsync = (signal & 0x00FF0000) >> 16; + timings->bt.vsync = (signal2 & 0x00FF0000) >> 16; + timings->bt.hbackporch = (signal & 0x0000FF00) >> 8; + timings->bt.hfrontporch = signal & 0x000000FF; + timings->bt.vbackporch = (signal2 & 0x0000FF00) >> 8; + timings->bt.vfrontporch = signal2 & 0x000000FF; + + return 0; +} + +static void return_all_buffers(struct mgb4_vin_dev *vindev, + enum vb2_buffer_state state) +{ + struct mgb4_frame_buffer *buf, *node; + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_for_each_entry_safe(buf, node, &vindev->buf_list, list) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->list); + } + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(q); + unsigned int size = (vindev->timings.bt.width + vindev->padding) + * vindev->timings.bt.height * 4; + + if (!size) + return -EINVAL; + + if (*nplanes) + return sizes[0] < size ? -EINVAL : 0; + *nplanes = 1; + sizes[0] = size; + + return 0; +} + +static int buffer_init(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); + + INIT_LIST_HEAD(&buf->list); + + return 0; +} + +static int buffer_prepare(struct vb2_buffer *vb) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct device *dev = &vindev->mgbdev->pdev->dev; + unsigned int size = (vindev->timings.bt.width + vindev->padding) + * vindev->timings.bt.height * 4; + + if (vb2_plane_size(vb, 0) < size) { + dev_err(dev, "buffer too small (%lu < %u)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void buffer_queue(struct vb2_buffer *vb) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_add_tail(&buf->list, &vindev->buf_list); + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static void stop_streaming(struct vb2_queue *vq) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq); + const struct mgb4_vin_config *config = vindev->config; + int irq = xdma_get_user_irq(vindev->mgbdev->xdev, config->vin_irq); + + xdma_disable_user_irq(vindev->mgbdev->xdev, irq); + + /* + * In loopback mode, the HW frame queue must be left running for + * the IN->OUT transmission to work! + */ + if (!loopback_active(vindev)) + mgb4_mask_reg(&vindev->mgbdev->video, config->regs.config, 0x2, + 0x0); + + cancel_work_sync(&vindev->dma_work); + return_all_buffers(vindev, VB2_BUF_STATE_ERROR); +} + +static int start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq); + const struct mgb4_vin_config *config = vindev->config; + int irq = xdma_get_user_irq(vindev->mgbdev->xdev, config->vin_irq); + + vindev->sequence = 0; + + /* + * In loopback mode, the HW frame queue is already running. + */ + if (!loopback_active(vindev)) + mgb4_mask_reg(&vindev->mgbdev->video, config->regs.config, 0x2, + 0x2); + + xdma_enable_user_irq(vindev->mgbdev->xdev, irq); + + return 0; +} + +static const struct vb2_ops queue_ops = { + .queue_setup = queue_setup, + .buf_init = buffer_init, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .start_streaming = start_streaming, + .stop_streaming = stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish +}; + +static int fh_open(struct file *file) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + int rv; + + mutex_lock(&vindev->lock); + + rv = v4l2_fh_open(file); + if (rv) + goto out; + + if (!v4l2_fh_is_singular_file(file)) + goto out; + + get_timings(vindev, &vindev->timings); + set_loopback_padding(vindev, vindev->padding); + +out: + mutex_unlock(&vindev->lock); + return rv; +} + +static int fh_release(struct file *file) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + int rv; + + mutex_lock(&vindev->lock); + + if (v4l2_fh_is_singular_file(file)) + set_loopback_padding(vindev, 0); + + rv = _vb2_fop_release(file, NULL); + + mutex_unlock(&vindev->lock); + + return rv; +} + +static const struct v4l2_file_operations video_fops = { + .owner = THIS_MODULE, + .open = fh_open, + .release = fh_release, + .unlocked_ioctl = video_ioctl2, + .read = vb2_fop_read, + .mmap = vb2_fop_mmap, + .poll = vb2_fop_poll, +}; + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); + strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card)); + + return 0; +} + +static int vidioc_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->index != 0) + return -EINVAL; + + f->pixelformat = V4L2_PIX_FMT_ABGR32; + + return 0; +} + +static int vidioc_enum_frameintervals(struct file *file, void *priv, + struct v4l2_frmivalenum *ival) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (ival->index != 0) + return -EINVAL; + if (ival->pixel_format != V4L2_PIX_FMT_ABGR32) + return -EINVAL; + if (ival->width != vindev->timings.bt.width || + ival->height != vindev->timings.bt.height) + return -EINVAL; + + ival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS; + ival->stepwise.min.denominator = 60; + ival->stepwise.min.numerator = 1; + ival->stepwise.max.denominator = 1; + ival->stepwise.max.numerator = 1; + ival->stepwise.step = ival->stepwise.max; + + return 0; +} + +static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = vindev->timings.bt.width; + f->fmt.pix.height = vindev->timings.bt.height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = (f->fmt.pix.width + vindev->padding) * 4; + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + + if (vb2_is_busy(&vindev->queue)) + return -EBUSY; + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = vindev->timings.bt.width; + f->fmt.pix.height = vindev->timings.bt.height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + vindev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width * 4)) / 4; + mgb4_write_reg(video, vindev->config->regs.padding, vindev->padding); + set_loopback_padding(vindev, vindev->padding); + + return 0; +} + +static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = vindev->timings.bt.width; + f->fmt.pix.height = vindev->timings.bt.height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + u32 status; + + if (i->index != 0) + return -EINVAL; + + strscpy(i->name, "MGB4", sizeof(i->name)); + i->type = V4L2_INPUT_TYPE_CAMERA; + i->capabilities = V4L2_IN_CAP_DV_TIMINGS; + i->status = 0; + + status = mgb4_read_reg(video, vindev->config->regs.status); + if (!(status & (1U << 2))) + i->status |= V4L2_IN_ST_NO_SYNC; + if (!(status & (3 << 9))) + i->status |= V4L2_IN_ST_NO_SIGNAL; + + return 0; +} + +static int vidioc_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_ABGR32) + return -EINVAL; + + fsize->discrete.width = vindev->timings.bt.width; + fsize->discrete.height = vindev->timings.bt.height; + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; + + return 0; +} + +static int vidioc_s_input(struct file *file, void *priv, unsigned int i) +{ + return (i == 0) ? 0 : -EINVAL; +} + +static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + const struct mgb4_vin_regs *regs = &vindev->config->regs; + struct v4l2_fract timeperframe = { + .numerator = mgb4_read_reg(video, regs->frame_period), + .denominator = 125000000, + }; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + parm->parm.capture.readbuffers = 2; + parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; + parm->parm.capture.timeperframe = timeperframe; + + return 0; +} + +static int vidioc_s_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (timings->bt.width < video_timings_cap.bt.min_width || + timings->bt.width > video_timings_cap.bt.max_width || + timings->bt.height < video_timings_cap.bt.min_height || + timings->bt.height > video_timings_cap.bt.max_height) + return -EINVAL; + if (timings->bt.width == vindev->timings.bt.width && + timings->bt.height == vindev->timings.bt.height) + return 0; + if (vb2_is_busy(&vindev->queue)) + return -EBUSY; + + vindev->timings = *timings; + + return 0; +} + +static int vidioc_g_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + *timings = vindev->timings; + + return 0; +} + +static int vidioc_query_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + return get_timings(vindev, timings); +} + +static int vidioc_enum_dv_timings(struct file *file, void *fh, + struct v4l2_enum_dv_timings *timings) +{ + return v4l2_enum_dv_timings_cap(timings, &video_timings_cap, NULL, NULL); +} + +static int vidioc_dv_timings_cap(struct file *file, void *fh, + struct v4l2_dv_timings_cap *cap) +{ + *cap = video_timings_cap; + + return 0; +} + +static int vidioc_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_SOURCE_CHANGE: + return v4l2_src_change_event_subscribe(fh, sub); + } + + return v4l2_ctrl_subscribe_event(fh, sub); +} + +static const struct v4l2_ioctl_ops video_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, + .vidioc_try_fmt_vid_cap = vidioc_try_fmt, + .vidioc_s_fmt_vid_cap = vidioc_s_fmt, + .vidioc_g_fmt_vid_cap = vidioc_g_fmt, + .vidioc_enum_framesizes = vidioc_enum_framesizes, + .vidioc_enum_frameintervals = vidioc_enum_frameintervals, + .vidioc_enum_input = vidioc_enum_input, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_g_parm = vidioc_parm, + .vidioc_s_parm = vidioc_parm, + .vidioc_dv_timings_cap = vidioc_dv_timings_cap, + .vidioc_enum_dv_timings = vidioc_enum_dv_timings, + .vidioc_g_dv_timings = vidioc_g_dv_timings, + .vidioc_s_dv_timings = vidioc_s_dv_timings, + .vidioc_query_dv_timings = vidioc_query_dv_timings, + .vidioc_subscribe_event = vidioc_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static void dma_transfer(struct work_struct *work) +{ + struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, + dma_work); + struct mgb4_regs *video = &vindev->mgbdev->video; + struct device *dev = &vindev->mgbdev->pdev->dev; + struct mgb4_frame_buffer *buf = 0; + unsigned long flags; + u32 addr; + int rv; + + spin_lock_irqsave(&vindev->qlock, flags); + if (!list_empty(&vindev->buf_list)) { + buf = list_first_entry(&vindev->buf_list, + struct mgb4_frame_buffer, list); + list_del_init(vindev->buf_list.next); + } + spin_unlock_irqrestore(&vindev->qlock, flags); + + if (!buf) + return; + + addr = mgb4_read_reg(video, vindev->config->regs.address); + if (addr >= MGB4_ERR_QUEUE_FULL) { + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + return; + } + + rv = mgb4_dma_transfer(vindev->mgbdev, vindev->config->dma_channel, + false, addr, + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); + if (rv < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + buf->vb.vb2_buf.timestamp = ktime_get_ns(); + buf->vb.sequence = vindev->sequence++; + buf->vb.field = V4L2_FIELD_NONE; + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } +} + +static void signal_change(struct work_struct *work) +{ + struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, + err_work); + struct mgb4_regs *video = &vindev->mgbdev->video; + struct v4l2_bt_timings *timings = &vindev->timings.bt; + struct device *dev = &vindev->mgbdev->pdev->dev; + + u32 resolution = mgb4_read_reg(video, vindev->config->regs.resolution); + u32 width = resolution >> 16; + u32 height = resolution & 0xFFFF; + + if (timings->width != width || timings->height != height) { + static const struct v4l2_event ev = { + .type = V4L2_EVENT_SOURCE_CHANGE, + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, + }; + + v4l2_event_queue(&vindev->vdev, &ev); + + if (vb2_is_streaming(&vindev->queue)) + vb2_queue_error(&vindev->queue); + } + + dev_dbg(dev, "stream changed to %ux%u\n", width, height); +} + +static irqreturn_t vin_handler(int irq, void *ctx) +{ + struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx; + struct mgb4_regs *video = &vindev->mgbdev->video; + + schedule_work(&vindev->dma_work); + + mgb4_write_reg(video, 0xB4, 1U << vindev->config->vin_irq); + + return IRQ_HANDLED; +} + +static irqreturn_t err_handler(int irq, void *ctx) +{ + struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx; + struct mgb4_regs *video = &vindev->mgbdev->video; + + schedule_work(&vindev->err_work); + + mgb4_write_reg(video, 0xB4, 1U << vindev->config->err_irq); + + return IRQ_HANDLED; +} + +static int deser_init(struct mgb4_vin_dev *vindev, int id) +{ + int rv, addr_size; + size_t values_count; + const struct mgb4_i2c_kv *values; + const struct i2c_board_info *info; + struct device *dev = &vindev->mgbdev->pdev->dev; + + if (MGB4_IS_GMSL(vindev->mgbdev)) { + info = &gmsl_deser_info[id]; + addr_size = 16; + values = gmsl_i2c; + values_count = ARRAY_SIZE(gmsl_i2c); + } else { + info = &fpdl3_deser_info[id]; + addr_size = 8; + values = fpdl3_i2c; + values_count = ARRAY_SIZE(fpdl3_i2c); + } + + rv = mgb4_i2c_init(&vindev->deser, vindev->mgbdev->i2c_adap, info, + addr_size); + if (rv < 0) { + dev_err(dev, "failed to create deserializer\n"); + return rv; + } + rv = mgb4_i2c_configure(&vindev->deser, values, values_count); + if (rv < 0) { + dev_err(dev, "failed to configure deserializer\n"); + goto err_i2c_dev; + } + + return 0; + +err_i2c_dev: + mgb4_i2c_free(&vindev->deser); + + return rv; +} + +static void fpga_init(struct mgb4_vin_dev *vindev) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + const struct mgb4_vin_regs *regs = &vindev->config->regs; + + mgb4_write_reg(video, regs->config, 0x00000001); + mgb4_write_reg(video, regs->sync, 0x03E80002); + mgb4_write_reg(video, regs->padding, 0x00000000); + mgb4_write_reg(video, regs->config, 1U << 9); +} + +#ifdef CONFIG_DEBUG_FS +static void debugfs_init(struct mgb4_vin_dev *vindev) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + + vindev->debugfs = debugfs_create_dir(vindev->vdev.name, + vindev->mgbdev->debugfs); + if (!vindev->debugfs) + return; + + vindev->regs[0].name = "CONFIG"; + vindev->regs[0].offset = vindev->config->regs.config; + vindev->regs[1].name = "STATUS"; + vindev->regs[1].offset = vindev->config->regs.status; + vindev->regs[2].name = "RESOLUTION"; + vindev->regs[2].offset = vindev->config->regs.resolution; + vindev->regs[3].name = "FRAME_PERIOD"; + vindev->regs[3].offset = vindev->config->regs.frame_period; + vindev->regs[4].name = "HS_VS_GENER_SETTINGS"; + vindev->regs[4].offset = vindev->config->regs.sync; + vindev->regs[5].name = "PCLK_FREQUENCY"; + vindev->regs[5].offset = vindev->config->regs.pclk; + vindev->regs[6].name = "VIDEO_PARAMS_1"; + vindev->regs[6].offset = vindev->config->regs.signal; + vindev->regs[7].name = "VIDEO_PARAMS_2"; + vindev->regs[7].offset = vindev->config->regs.signal2; + vindev->regs[8].name = "PADDING_PIXELS"; + vindev->regs[8].offset = vindev->config->regs.padding; + + vindev->regset.base = video->membase; + vindev->regset.regs = vindev->regs; + vindev->regset.nregs = ARRAY_SIZE(vindev->regs); + + debugfs_create_regset32("registers", 0444, vindev->debugfs, + &vindev->regset); +} +#endif + +struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id) +{ + int rv; + struct device_attribute **attr, **module_attr; + struct mgb4_vin_dev *vindev; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int vin_irq, err_irq; + + vindev = kzalloc(sizeof(*vindev), GFP_KERNEL); + if (!vindev) + return NULL; + + vindev->mgbdev = mgbdev; + vindev->config = &vin_cfg[id]; + + /* Frame queue*/ + INIT_LIST_HEAD(&vindev->buf_list); + spin_lock_init(&vindev->qlock); + + /* Work queues */ + INIT_WORK(&vindev->dma_work, dma_transfer); + INIT_WORK(&vindev->err_work, signal_change); + + /* IRQ callback */ + vin_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->vin_irq); + rv = request_irq(vin_irq, vin_handler, 0, "mgb4-vin", vindev); + if (rv) { + dev_err(dev, "failed to register vin irq handler\n"); + goto err_alloc; + } + /* Error IRQ callback */ + err_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->err_irq); + rv = request_irq(err_irq, err_handler, 0, "mgb4-err", vindev); + if (rv) { + dev_err(dev, "failed to register err irq handler\n"); + goto err_vin_irq; + } + + /* Set the FPGA registers default values */ + fpga_init(vindev); + + /* Set the deserializer default values */ + rv = deser_init(vindev, id); + if (rv) + goto err_err_irq; + + /* V4L2 stuff init */ + rv = v4l2_device_register(dev, &vindev->v4l2dev); + if (rv) { + dev_err(dev, "failed to register v4l2 device\n"); + goto err_err_irq; + } + + mutex_init(&vindev->lock); + + vindev->queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + vindev->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; + vindev->queue.buf_struct_size = sizeof(struct mgb4_frame_buffer); + vindev->queue.ops = &queue_ops; + vindev->queue.mem_ops = &vb2_dma_sg_memops; + vindev->queue.gfp_flags = GFP_DMA32; + vindev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + vindev->queue.min_buffers_needed = 2; + vindev->queue.drv_priv = vindev; + vindev->queue.lock = &vindev->lock; + vindev->queue.dev = dev; + rv = vb2_queue_init(&vindev->queue); + if (rv) { + dev_err(dev, "failed to initialize vb2 queue\n"); + goto err_v4l2_dev; + } + + snprintf(vindev->vdev.name, sizeof(vindev->vdev.name), "mgb4-in%d", + id + 1); + vindev->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE + | V4L2_CAP_STREAMING; + vindev->vdev.fops = &video_fops; + vindev->vdev.ioctl_ops = &video_ioctl_ops; + vindev->vdev.release = video_device_release_empty; + vindev->vdev.v4l2_dev = &vindev->v4l2dev; + vindev->vdev.lock = &vindev->lock; + vindev->vdev.queue = &vindev->queue; + video_set_drvdata(&vindev->vdev, vindev); + + /* Enable the video signal change watcher */ + xdma_enable_user_irq(vindev->mgbdev->xdev, err_irq); + + /* Register the video device */ + rv = video_register_device(&vindev->vdev, VFL_TYPE_VIDEO, -1); + if (rv) { + dev_err(dev, "failed to register video device\n"); + goto err_v4l2_dev; + } + + /* Module sysfs attributes */ + module_attr = MGB4_IS_GMSL(mgbdev) + ? mgb4_gmsl_in_attrs : mgb4_fpdl3_in_attrs; + for (attr = module_attr; *attr; attr++) + device_create_file(&vindev->vdev.dev, *attr); + +#ifdef CONFIG_DEBUG_FS + debugfs_init(vindev); +#endif + + return vindev; + +err_v4l2_dev: + v4l2_device_unregister(&vindev->v4l2dev); +err_err_irq: + free_irq(err_irq, vindev); +err_vin_irq: + free_irq(vin_irq, vindev); +err_alloc: + kfree(vindev); + + return NULL; +} + +void mgb4_vin_free(struct mgb4_vin_dev *vindev) +{ + struct device_attribute **attr, **module_attr; + int vin_irq = xdma_get_user_irq(vindev->mgbdev->xdev, + vindev->config->vin_irq); + int err_irq = xdma_get_user_irq(vindev->mgbdev->xdev, + vindev->config->err_irq); + + xdma_disable_user_irq(vindev->mgbdev->xdev, err_irq); + + free_irq(vin_irq, vindev); + free_irq(err_irq, vindev); + + debugfs_remove_recursive(vindev->debugfs); + + module_attr = MGB4_IS_GMSL(vindev->mgbdev) + ? mgb4_gmsl_in_attrs : mgb4_fpdl3_in_attrs; + for (attr = module_attr; *attr; attr++) + device_remove_file(&vindev->vdev.dev, *attr); + + mgb4_i2c_free(&vindev->deser); + video_unregister_device(&vindev->vdev); + v4l2_device_unregister(&vindev->v4l2dev); + + kfree(vindev); +} diff --git a/drivers/media/pci/mgb4/mgb4_vin.h b/drivers/media/pci/mgb4/mgb4_vin.h new file mode 100644 index 000000000000..0249b400ad4d --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vin.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_VIN_H__ +#define __MGB4_VIN_H__ + +#include <media/v4l2-device.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-ctrls.h> +#include <media/videobuf2-core.h> +#include <linux/debugfs.h> +#include "mgb4_i2c.h" + +struct mgb4_vin_regs { + u32 address; + u32 config; + u32 status; + u32 resolution; + u32 frame_period; + u32 sync; + u32 pclk; + u32 signal; + u32 signal2; + u32 padding; +}; + +struct mgb4_vin_config { + int id; + int dma_channel; + int vin_irq; + int err_irq; + struct mgb4_vin_regs regs; +}; + +struct mgb4_vin_dev { + struct mgb4_dev *mgbdev; + struct v4l2_device v4l2dev; + struct video_device vdev; + struct vb2_queue queue; + struct mutex lock; /* vdev lock */ + + spinlock_t qlock; /* video buffer queue lock */ + struct list_head buf_list; + struct work_struct dma_work, err_work; + + unsigned int sequence; + + struct v4l2_dv_timings timings; + u32 freq_range; + u32 padding; + + struct mgb4_i2c_client deser; + + const struct mgb4_vin_config *config; + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs; + struct debugfs_regset32 regset; + struct debugfs_reg32 regs[9]; +#endif +}; + +struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id); +void mgb4_vin_free(struct mgb4_vin_dev *vindev); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c new file mode 100644 index 000000000000..718a400db310 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vout.c @@ -0,0 +1,594 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + * + * This is the v4l2 output device module. It initializes the signal serializers + * and creates the v4l2 video devices. + * + * When the device is in loopback mode (a direct, in HW, in->out frame passing + * mode) we disable the v4l2 output by returning EBUSY in the open() syscall. + */ + +#include <linux/pci.h> +#include <linux/align.h> +#include <linux/dma/amd_xdma.h> +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-v4l2.h> +#include <media/videobuf2-dma-sg.h> +#include "mgb4_core.h" +#include "mgb4_dma.h" +#include "mgb4_sysfs.h" +#include "mgb4_io.h" +#include "mgb4_cmt.h" +#include "mgb4_vout.h" + +static const struct mgb4_vout_config vout_cfg[] = { + {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7c}}, + {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8c, 0x90, 0x9c}} +}; + +static const struct i2c_board_info fpdl3_ser_info[] = { + {I2C_BOARD_INFO("serializer1", 0x14)}, + {I2C_BOARD_INFO("serializer2", 0x16)}, +}; + +static const struct mgb4_i2c_kv fpdl3_i2c[] = { + {0x05, 0xFF, 0x04}, {0x06, 0xFF, 0x01}, {0xC2, 0xFF, 0x80} +}; + +static void return_all_buffers(struct mgb4_vout_dev *voutdev, + enum vb2_buffer_state state) +{ + struct mgb4_frame_buffer *buf, *node; + unsigned long flags; + + spin_lock_irqsave(&voutdev->qlock, flags); + list_for_each_entry_safe(buf, node, &voutdev->buf_list, list) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->list); + } + spin_unlock_irqrestore(&voutdev->qlock, flags); +} + +static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(q); + unsigned int size; + + size = (voutdev->width + voutdev->padding) * voutdev->height * 4; + + if (*nplanes) + return sizes[0] < size ? -EINVAL : 0; + *nplanes = 1; + sizes[0] = size; + + return 0; +} + +static int buffer_init(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); + + INIT_LIST_HEAD(&buf->list); + + return 0; +} + +static int buffer_prepare(struct vb2_buffer *vb) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vb->vb2_queue); + struct device *dev = &voutdev->mgbdev->pdev->dev; + unsigned int size; + + size = (voutdev->width * voutdev->padding) * voutdev->height * 4; + + if (vb2_plane_size(vb, 0) < size) { + dev_err(dev, "buffer too small (%lu < %u)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void buffer_queue(struct vb2_buffer *vb) +{ + struct mgb4_vout_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct mgb4_frame_buffer *buf = to_frame_buffer(vbuf); + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_add_tail(&buf->list, &vindev->buf_list); + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static void stop_streaming(struct vb2_queue *vq) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq); + struct mgb4_dev *mgbdev = voutdev->mgbdev; + int irq = xdma_get_user_irq(mgbdev->xdev, voutdev->config->irq); + + xdma_disable_user_irq(mgbdev->xdev, irq); + cancel_work_sync(&voutdev->dma_work); + mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0x2, 0x0); + return_all_buffers(voutdev, VB2_BUF_STATE_ERROR); +} + +static int start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq); + struct mgb4_dev *mgbdev = voutdev->mgbdev; + struct device *dev = &mgbdev->pdev->dev; + struct mgb4_frame_buffer *buf; + struct mgb4_regs *video = &mgbdev->video; + const struct mgb4_vout_config *config = voutdev->config; + int irq = xdma_get_user_irq(mgbdev->xdev, config->irq); + int rv; + u32 addr; + + mgb4_mask_reg(video, config->regs.config, 0x2, 0x2); + + addr = mgb4_read_reg(video, config->regs.address); + if (addr >= MGB4_ERR_QUEUE_FULL) { + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); + return_all_buffers(voutdev, VB2_BUF_STATE_QUEUED); + return -EBUSY; + } + + buf = list_first_entry(&voutdev->buf_list, struct mgb4_frame_buffer, + list); + list_del_init(voutdev->buf_list.next); + + rv = mgb4_dma_transfer(mgbdev, config->dma_channel, true, addr, + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); + if (rv < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } + + xdma_enable_user_irq(mgbdev->xdev, irq); + + return 0; +} + +static const struct vb2_ops queue_ops = { + .queue_setup = queue_setup, + .buf_init = buffer_init, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .start_streaming = start_streaming, + .stop_streaming = stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish +}; + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); + strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card)); + + return 0; +} + +static int vidioc_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->index != 0) + return -EINVAL; + + f->pixelformat = V4L2_PIX_FMT_ABGR32; + + return 0; +} + +static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = voutdev->width; + f->fmt.pix.height = voutdev->height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = (f->fmt.pix.width + voutdev->padding) * 4; + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + + if (vb2_is_busy(&voutdev->queue)) + return -EBUSY; + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = voutdev->width; + f->fmt.pix.height = voutdev->height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + voutdev->padding = (f->fmt.pix.bytesperline - (f->fmt.pix.width * 4)) / 4; + mgb4_write_reg(video, voutdev->config->regs.padding, voutdev->padding); + + return 0; +} + +static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = voutdev->width; + f->fmt.pix.height = voutdev->height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = max(f->fmt.pix.width * 4, + ALIGN_DOWN(f->fmt.pix.bytesperline, 4)); + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_g_output(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_s_output(struct file *file, void *priv, unsigned int i) +{ + return i ? -EINVAL : 0; +} + +static int vidioc_enum_output(struct file *file, void *priv, + struct v4l2_output *out) +{ + if (out->index != 0) + return -EINVAL; + + out->type = V4L2_OUTPUT_TYPE_ANALOG; + strscpy(out->name, "MGB4", sizeof(out->name)); + + return 0; +} + +static const struct v4l2_ioctl_ops video_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, + .vidioc_try_fmt_vid_out = vidioc_try_fmt, + .vidioc_s_fmt_vid_out = vidioc_s_fmt, + .vidioc_g_fmt_vid_out = vidioc_g_fmt, + .vidioc_enum_output = vidioc_enum_output, + .vidioc_g_output = vidioc_g_output, + .vidioc_s_output = vidioc_s_output, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, +}; + +static int fh_open(struct file *file) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + struct device *dev = &voutdev->mgbdev->pdev->dev; + u32 config, resolution; + int rv; + + /* Return EBUSY when the device is in loopback mode */ + config = mgb4_read_reg(video, voutdev->config->regs.config); + if ((config & 0xc) >> 2 != voutdev->config->id + MGB4_VIN_DEVICES) { + dev_dbg(dev, "can not open - device in loopback mode"); + return -EBUSY; + } + + mutex_lock(&voutdev->lock); + + rv = v4l2_fh_open(file); + if (rv) + goto out; + + if (!v4l2_fh_is_singular_file(file)) + goto out; + + resolution = mgb4_read_reg(video, voutdev->config->regs.resolution); + voutdev->width = resolution >> 16; + voutdev->height = resolution & 0xFFFF; + +out: + mutex_unlock(&voutdev->lock); + return rv; +} + +static const struct v4l2_file_operations video_fops = { + .owner = THIS_MODULE, + .open = fh_open, + .release = vb2_fop_release, + .unlocked_ioctl = video_ioctl2, + .write = vb2_fop_write, + .mmap = vb2_fop_mmap, + .poll = vb2_fop_poll, +}; + +static void dma_transfer(struct work_struct *work) +{ + struct mgb4_vout_dev *voutdev = container_of(work, struct mgb4_vout_dev, + dma_work); + struct device *dev = &voutdev->mgbdev->pdev->dev; + struct mgb4_regs *video = &voutdev->mgbdev->video; + struct mgb4_frame_buffer *buf = 0; + unsigned long flags; + u32 addr; + int rv; + + spin_lock_irqsave(&voutdev->qlock, flags); + if (!list_empty(&voutdev->buf_list)) { + buf = list_first_entry(&voutdev->buf_list, + struct mgb4_frame_buffer, list); + list_del_init(voutdev->buf_list.next); + } + spin_unlock_irqrestore(&voutdev->qlock, flags); + + if (!buf) + return; + + addr = mgb4_read_reg(video, voutdev->config->regs.address); + if (addr >= MGB4_ERR_QUEUE_FULL) { + dev_dbg(dev, "frame queue error (%d)\n", (int)addr); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + return; + } + + rv = mgb4_dma_transfer(voutdev->mgbdev, voutdev->config->dma_channel, + true, addr, + vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)); + if (rv < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } +} + +static irqreturn_t handler(int irq, void *ctx) +{ + struct mgb4_vout_dev *voutdev = (struct mgb4_vout_dev *)ctx; + struct mgb4_regs *video = &voutdev->mgbdev->video; + + schedule_work(&voutdev->dma_work); + + mgb4_write_reg(video, 0xB4, 1U << voutdev->config->irq); + + return IRQ_HANDLED; +} + +static int ser_init(struct mgb4_vout_dev *voutdev, int id) +{ + int rv; + const struct i2c_board_info *info = &fpdl3_ser_info[id]; + struct mgb4_i2c_client *ser = &voutdev->ser; + struct device *dev = &voutdev->mgbdev->pdev->dev; + + if (MGB4_IS_GMSL(voutdev->mgbdev)) + return 0; + + rv = mgb4_i2c_init(ser, voutdev->mgbdev->i2c_adap, info, 8); + if (rv < 0) { + dev_err(dev, "failed to create serializer\n"); + return rv; + } + rv = mgb4_i2c_configure(ser, fpdl3_i2c, ARRAY_SIZE(fpdl3_i2c)); + if (rv < 0) { + dev_err(dev, "failed to configure serializer\n"); + goto err_i2c_dev; + } + + return 0; + +err_i2c_dev: + mgb4_i2c_free(ser); + + return rv; +} + +static void fpga_init(struct mgb4_vout_dev *voutdev) +{ + struct mgb4_regs *video = &voutdev->mgbdev->video; + const struct mgb4_vout_regs *regs = &voutdev->config->regs; + + mgb4_write_reg(video, regs->config, 0x00000011); + mgb4_write_reg(video, regs->resolution, + (MGB4_DEFAULT_WIDTH << 16) | MGB4_DEFAULT_HEIGHT); + mgb4_write_reg(video, regs->hsync, 0x00102020); + mgb4_write_reg(video, regs->vsync, 0x40020202); + mgb4_write_reg(video, regs->frame_period, MGB4_DEFAULT_PERIOD); + mgb4_write_reg(video, regs->padding, 0x00000000); + + voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, 70000 >> 1) << 1; + + mgb4_write_reg(video, regs->config, + (voutdev->config->id + MGB4_VIN_DEVICES) << 2 | 1 << 4); +} + +#ifdef CONFIG_DEBUG_FS +static void debugfs_init(struct mgb4_vout_dev *voutdev) +{ + struct mgb4_regs *video = &voutdev->mgbdev->video; + + voutdev->debugfs = debugfs_create_dir(voutdev->vdev.name, + voutdev->mgbdev->debugfs); + if (!voutdev->debugfs) + return; + + voutdev->regs[0].name = "CONFIG"; + voutdev->regs[0].offset = voutdev->config->regs.config; + voutdev->regs[1].name = "STATUS"; + voutdev->regs[1].offset = voutdev->config->regs.status; + voutdev->regs[2].name = "RESOLUTION"; + voutdev->regs[2].offset = voutdev->config->regs.resolution; + voutdev->regs[3].name = "VIDEO_PARAMS_1"; + voutdev->regs[3].offset = voutdev->config->regs.hsync; + voutdev->regs[4].name = "VIDEO_PARAMS_2"; + voutdev->regs[4].offset = voutdev->config->regs.vsync; + voutdev->regs[5].name = "FRAME_PERIOD"; + voutdev->regs[5].offset = voutdev->config->regs.frame_period; + voutdev->regs[6].name = "PADDING"; + voutdev->regs[6].offset = voutdev->config->regs.padding; + + voutdev->regset.base = video->membase; + voutdev->regset.regs = voutdev->regs; + voutdev->regset.nregs = ARRAY_SIZE(voutdev->regs); + + debugfs_create_regset32("registers", 0444, voutdev->debugfs, + &voutdev->regset); +} +#endif + +struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id) +{ + int rv, irq; + struct device_attribute **attr, **module_attr; + struct mgb4_vout_dev *voutdev; + struct mgb4_regs *video; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + + voutdev = kzalloc(sizeof(*voutdev), GFP_KERNEL); + if (!voutdev) + return NULL; + + voutdev->mgbdev = mgbdev; + voutdev->config = &vout_cfg[id]; + video = &voutdev->mgbdev->video; + + /* Frame queue */ + INIT_LIST_HEAD(&voutdev->buf_list); + spin_lock_init(&voutdev->qlock); + + /* DMA transfer stuff */ + INIT_WORK(&voutdev->dma_work, dma_transfer); + + /* IRQ callback */ + irq = xdma_get_user_irq(mgbdev->xdev, voutdev->config->irq); + rv = request_irq(irq, handler, 0, "mgb4-vout", voutdev); + if (rv) { + dev_err(dev, "failed to register irq handler\n"); + goto err_alloc; + } + + /* Set the FPGA registers default values */ + fpga_init(voutdev); + + /* Set the serializer default values */ + rv = ser_init(voutdev, id); + if (rv) + goto err_irq; + + /* V4L2 stuff init */ + rv = v4l2_device_register(dev, &voutdev->v4l2dev); + if (rv) { + dev_err(dev, "failed to register v4l2 device\n"); + goto err_irq; + } + + mutex_init(&voutdev->lock); + + voutdev->queue.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + voutdev->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_WRITE; + voutdev->queue.buf_struct_size = sizeof(struct mgb4_frame_buffer); + voutdev->queue.ops = &queue_ops; + voutdev->queue.mem_ops = &vb2_dma_sg_memops; + voutdev->queue.gfp_flags = GFP_DMA32; + voutdev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + voutdev->queue.min_buffers_needed = 2; + voutdev->queue.drv_priv = voutdev; + voutdev->queue.lock = &voutdev->lock; + voutdev->queue.dev = dev; + rv = vb2_queue_init(&voutdev->queue); + if (rv) { + dev_err(dev, "failed to initialize vb2 queue\n"); + goto err_v4l2_dev; + } + + snprintf(voutdev->vdev.name, sizeof(voutdev->vdev.name), "mgb4-out%d", + id + 1); + voutdev->vdev.device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE + | V4L2_CAP_STREAMING; + voutdev->vdev.vfl_dir = VFL_DIR_TX; + voutdev->vdev.fops = &video_fops; + voutdev->vdev.ioctl_ops = &video_ioctl_ops; + voutdev->vdev.release = video_device_release_empty; + voutdev->vdev.v4l2_dev = &voutdev->v4l2dev; + voutdev->vdev.lock = &voutdev->lock; + voutdev->vdev.queue = &voutdev->queue; + video_set_drvdata(&voutdev->vdev, voutdev); + + rv = video_register_device(&voutdev->vdev, VFL_TYPE_VIDEO, -1); + if (rv) { + dev_err(dev, "failed to register video device\n"); + goto err_v4l2_dev; + } + + /* Module sysfs attributes */ + module_attr = MGB4_IS_GMSL(mgbdev) + ? mgb4_gmsl_out_attrs : mgb4_fpdl3_out_attrs; + for (attr = module_attr; *attr; attr++) + device_create_file(&voutdev->vdev.dev, *attr); + +#ifdef CONFIG_DEBUG_FS + debugfs_init(voutdev); +#endif + + return voutdev; + +err_v4l2_dev: + v4l2_device_unregister(&voutdev->v4l2dev); +err_irq: + free_irq(irq, voutdev); +err_alloc: + kfree(voutdev); + + return NULL; +} + +void mgb4_vout_free(struct mgb4_vout_dev *voutdev) +{ + struct device_attribute **attr, **module_attr; + int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq); + + free_irq(irq, voutdev); + + debugfs_remove_recursive(voutdev->debugfs); + + module_attr = MGB4_IS_GMSL(voutdev->mgbdev) + ? mgb4_gmsl_out_attrs : mgb4_fpdl3_out_attrs; + for (attr = module_attr; *attr; attr++) + device_remove_file(&voutdev->vdev.dev, *attr); + + mgb4_i2c_free(&voutdev->ser); + video_unregister_device(&voutdev->vdev); + v4l2_device_unregister(&voutdev->v4l2dev); + + kfree(voutdev); +} diff --git a/drivers/media/pci/mgb4/mgb4_vout.h b/drivers/media/pci/mgb4/mgb4_vout.h new file mode 100644 index 000000000000..b163dee711fd --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vout.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2023 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_VOUT_H__ +#define __MGB4_VOUT_H__ + +#include <media/v4l2-device.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-ctrls.h> +#include <media/videobuf2-core.h> +#include <linux/debugfs.h> +#include "mgb4_i2c.h" + +struct mgb4_vout_regs { + u32 address; + u32 config; + u32 status; + u32 resolution; + u32 frame_period; + u32 hsync; + u32 vsync; + u32 padding; +}; + +struct mgb4_vout_config { + int id; + int dma_channel; + int irq; + struct mgb4_vout_regs regs; +}; + +struct mgb4_vout_dev { + struct mgb4_dev *mgbdev; + struct v4l2_device v4l2dev; + struct video_device vdev; + struct vb2_queue queue; + struct mutex lock; /* vdev lock */ + + spinlock_t qlock; /* buffer queue lock */ + struct list_head buf_list; + struct work_struct dma_work; + + u32 width; + u32 height; + u32 freq; + u32 padding; + + struct mgb4_i2c_client ser; + + const struct mgb4_vout_config *config; + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs; + struct debugfs_regset32 regset; + struct debugfs_reg32 regs[7]; +#endif +}; + +struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id); +void mgb4_vout_free(struct mgb4_vout_dev *voutdev); + +#endif

[v8,1/2] Added Digiteq Automotive MGB4 driver

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