diff mbox series

[15/22] media: sunxi: Remove the sun6i-csi driver implementation

Message ID 20210910184147.336618-16-paul.kocialkowski@bootlin.com
State New
Headers show
Series [01/22] clk: sunxi-ng: v3s: Make the ISP PLL clock public | expand

Commit Message

Paul Kocialkowski Sept. 10, 2021, 6:41 p.m. UTC
As described in the commit adding support for the new sun6i-csi driver,
a complete rewrite was necessary to support the Allwinner A31 ISP as
well as fix a number of issues with the current implementation.

Farewell and thanks for all the pixels!

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
 .../media/platform/sunxi/sun6i-csi/Kconfig    |  12 -
 .../media/platform/sunxi/sun6i-csi/Makefile   |   4 -
 .../platform/sunxi/sun6i-csi/sun6i_csi.c      | 936 ------------------
 .../platform/sunxi/sun6i-csi/sun6i_csi.h      | 138 ---
 .../platform/sunxi/sun6i-csi/sun6i_csi_reg.h  | 196 ----
 .../platform/sunxi/sun6i-csi/sun6i_video.c    | 683 -------------
 .../platform/sunxi/sun6i-csi/sun6i_video.h    |  38 -
 7 files changed, 2007 deletions(-)
 delete mode 100644 drivers/media/platform/sunxi/sun6i-csi/Kconfig
 delete mode 100644 drivers/media/platform/sunxi/sun6i-csi/Makefile
 delete mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
 delete mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
 delete mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
 delete mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
 delete mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h

Comments

Maxime Ripard Sept. 13, 2021, 8:17 a.m. UTC | #1
On Fri, Sep 10, 2021 at 08:41:40PM +0200, Paul Kocialkowski wrote:
> As described in the commit adding support for the new sun6i-csi driver,

> a complete rewrite was necessary to support the Allwinner A31 ISP as

> well as fix a number of issues with the current implementation.

> 

> Farewell and thanks for all the pixels!

> 

> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>


For completeness, this is what the other commit log mentions:

> While adapting the sun6i-csi driver for MIPI CSI-2 support was

> possible, it became clear that adding support for the ISP required

> very heavy changes to the driver which were quite hard to break down

> into a series of subsequent changes.


> The first major difficulty comes from the lack of v4l2 subdev that

> acts a bridge, separate from the video node representing the DMA

> engine. To support the ISP, only parts of the hardware must be

> configured (excluding aspects related to the DMA output), which made

> the separation a hard requirement.


> Another significant difficulty was the specific dance that is required

> to have both the ISP and CSI device be part of the same media device.

> Because the ISP and CSI are two different hardware blocks, they have

> two distinct drivers that will each try to register their own v4l2

> and media devices, resulting in two distinct pipelines. When the ISP

> is in use, we actually want the CSI driver to register with the ISP's

> v4l2 and media devices while keeping the ability to register its own

> when the ISP is not in use. This is done by:

> 1. Having the CSI driver check whether the ISP is available, using

>    sun6i_csi_isp_detect();

> 2. If not, it can register when its own async subdevs are ready, using

>    sun6i_csi_v4l2_complete();

> 3. If so, it will register its bridge as an async subdev which will

>    be picked-up by the ISP driver (from the fwnode graph link);

> 4. When the subdev becomes bound to the ISP's v4l2 device, we can

>    then access that device (and the associated media device) to

>    complete registration of the capture video node, using

>    sun6i_csi_isp_complete();

> Besides the logic rework, other issues were identified and resolved:

> - The sync mechanism for buffer flipping was based on the frame done

>   interrupt, which is too late (next frame is already being processed).

>   This lead to requiring 3 buffers to start and writing two addresses

>   when starting. Using vsync as a sync point seems to be the correct

>   approach and allows using only two buffers without tearing;

> - Using devm_regmap_init_mmio_clk was incorrect since the reset also

>   comes into play;

> - Some register definitions were inverted compared to their actual

>   effect (which was inherited from the Allwinner documentation and

>   code): comments were added where relevant;

> - The deprecated v4l2_async_notifier_parse_fwnode_endpoints() helper

>   is no longer used by the driver;


With that being said, NAK.

Having heavy changes to a driver is completely fine, and is kind of
expected really with such a big change. Breaking all possibility of
bisection and throwing away years of stabilization and maintenance
isn't.

And all those small bug fixes you mention at the end are just that:
small bug fixes that can be done on the current driver just fine too.

Maxime
Paul Kocialkowski Sept. 14, 2021, 8:04 a.m. UTC | #2
Hi,

On Mon 13 Sep 21, 10:17, Maxime Ripard wrote:
> On Fri, Sep 10, 2021 at 08:41:40PM +0200, Paul Kocialkowski wrote:
> > As described in the commit adding support for the new sun6i-csi driver,
> > a complete rewrite was necessary to support the Allwinner A31 ISP as
> > well as fix a number of issues with the current implementation.
> > 
> > Farewell and thanks for all the pixels!
> > 
> > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> 
> For completeness, this is what the other commit log mentions:
> 
> > While adapting the sun6i-csi driver for MIPI CSI-2 support was
> > possible, it became clear that adding support for the ISP required
> > very heavy changes to the driver which were quite hard to break down
> > into a series of subsequent changes.
> 
> > The first major difficulty comes from the lack of v4l2 subdev that
> > acts a bridge, separate from the video node representing the DMA
> > engine. To support the ISP, only parts of the hardware must be
> > configured (excluding aspects related to the DMA output), which made
> > the separation a hard requirement.
> 
> > Another significant difficulty was the specific dance that is required
> > to have both the ISP and CSI device be part of the same media device.
> > Because the ISP and CSI are two different hardware blocks, they have
> > two distinct drivers that will each try to register their own v4l2
> > and media devices, resulting in two distinct pipelines. When the ISP
> > is in use, we actually want the CSI driver to register with the ISP's
> > v4l2 and media devices while keeping the ability to register its own
> > when the ISP is not in use. This is done by:
> > 1. Having the CSI driver check whether the ISP is available, using
> >    sun6i_csi_isp_detect();
> > 2. If not, it can register when its own async subdevs are ready, using
> >    sun6i_csi_v4l2_complete();
> > 3. If so, it will register its bridge as an async subdev which will
> >    be picked-up by the ISP driver (from the fwnode graph link);
> > 4. When the subdev becomes bound to the ISP's v4l2 device, we can
> >    then access that device (and the associated media device) to
> >    complete registration of the capture video node, using
> >    sun6i_csi_isp_complete();
> > Besides the logic rework, other issues were identified and resolved:
> > - The sync mechanism for buffer flipping was based on the frame done
> >   interrupt, which is too late (next frame is already being processed).
> >   This lead to requiring 3 buffers to start and writing two addresses
> >   when starting. Using vsync as a sync point seems to be the correct
> >   approach and allows using only two buffers without tearing;
> > - Using devm_regmap_init_mmio_clk was incorrect since the reset also
> >   comes into play;
> > - Some register definitions were inverted compared to their actual
> >   effect (which was inherited from the Allwinner documentation and
> >   code): comments were added where relevant;
> > - The deprecated v4l2_async_notifier_parse_fwnode_endpoints() helper
> >   is no longer used by the driver;
> 
> With that being said, NAK.
> 
> Having heavy changes to a driver is completely fine, and is kind of
> expected really with such a big change. Breaking all possibility of
> bisection and throwing away years of stabilization and maintenance
> isn't.
> 
> And all those small bug fixes you mention at the end are just that:
> small bug fixes that can be done on the current driver just fine too.

I understand that this looks like we're trashing all the work that was
done previously by removing the current driver and adding the new one
but the logic for deciding what to write into registers was carefully
preserved from the original driver to make sure that the works of
stabilization and maintenance are not lost.

However I would understand that my good promise on this is not enough,
so perhaps I could provide a combinatory verification that the same set
of mbus/pixel formats end up with the same thing being written into
registers.

In addition I understand that it will be necessary to split the changes
up into small commits to clarify the transition path between the two
drivers. So I will do my best to split things up.

Does that seem like an agreeable plan or do you see other things that
would be blockers?

My initial thought was that it would be much easier to review the driver as a
rewrite, but I'm not too surprised I was wrong. To be honest it was nearly
impossible to actually have the initial development happen as sequential steps
and I preferred to allocate my time on other tasks than splitting the changes
into these sequential steps.

Cheers,

Paul
Sakari Ailus Sept. 15, 2021, 7:51 p.m. UTC | #3
Hi Paul, Maxime,

On Tue, Sep 14, 2021 at 10:04:25AM +0200, Paul Kocialkowski wrote:
> Hi,

> 

> On Mon 13 Sep 21, 10:17, Maxime Ripard wrote:

> > On Fri, Sep 10, 2021 at 08:41:40PM +0200, Paul Kocialkowski wrote:

> > > As described in the commit adding support for the new sun6i-csi driver,

> > > a complete rewrite was necessary to support the Allwinner A31 ISP as

> > > well as fix a number of issues with the current implementation.

> > > 

> > > Farewell and thanks for all the pixels!

> > > 

> > > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

> > 

> > For completeness, this is what the other commit log mentions:

> > 

> > > While adapting the sun6i-csi driver for MIPI CSI-2 support was

> > > possible, it became clear that adding support for the ISP required

> > > very heavy changes to the driver which were quite hard to break down

> > > into a series of subsequent changes.

> > 

> > > The first major difficulty comes from the lack of v4l2 subdev that

> > > acts a bridge, separate from the video node representing the DMA

> > > engine. To support the ISP, only parts of the hardware must be

> > > configured (excluding aspects related to the DMA output), which made

> > > the separation a hard requirement.

> > 

> > > Another significant difficulty was the specific dance that is required

> > > to have both the ISP and CSI device be part of the same media device.

> > > Because the ISP and CSI are two different hardware blocks, they have

> > > two distinct drivers that will each try to register their own v4l2

> > > and media devices, resulting in two distinct pipelines. When the ISP

> > > is in use, we actually want the CSI driver to register with the ISP's

> > > v4l2 and media devices while keeping the ability to register its own

> > > when the ISP is not in use. This is done by:

> > > 1. Having the CSI driver check whether the ISP is available, using

> > >    sun6i_csi_isp_detect();

> > > 2. If not, it can register when its own async subdevs are ready, using

> > >    sun6i_csi_v4l2_complete();

> > > 3. If so, it will register its bridge as an async subdev which will

> > >    be picked-up by the ISP driver (from the fwnode graph link);

> > > 4. When the subdev becomes bound to the ISP's v4l2 device, we can

> > >    then access that device (and the associated media device) to

> > >    complete registration of the capture video node, using

> > >    sun6i_csi_isp_complete();

> > > Besides the logic rework, other issues were identified and resolved:

> > > - The sync mechanism for buffer flipping was based on the frame done

> > >   interrupt, which is too late (next frame is already being processed).

> > >   This lead to requiring 3 buffers to start and writing two addresses

> > >   when starting. Using vsync as a sync point seems to be the correct

> > >   approach and allows using only two buffers without tearing;

> > > - Using devm_regmap_init_mmio_clk was incorrect since the reset also

> > >   comes into play;

> > > - Some register definitions were inverted compared to their actual

> > >   effect (which was inherited from the Allwinner documentation and

> > >   code): comments were added where relevant;

> > > - The deprecated v4l2_async_notifier_parse_fwnode_endpoints() helper

> > >   is no longer used by the driver;

> > 

> > With that being said, NAK.

> > 

> > Having heavy changes to a driver is completely fine, and is kind of

> > expected really with such a big change. Breaking all possibility of

> > bisection and throwing away years of stabilization and maintenance

> > isn't.

> > 

> > And all those small bug fixes you mention at the end are just that:

> > small bug fixes that can be done on the current driver just fine too.

> 

> I understand that this looks like we're trashing all the work that was

> done previously by removing the current driver and adding the new one

> but the logic for deciding what to write into registers was carefully

> preserved from the original driver to make sure that the works of

> stabilization and maintenance are not lost.

> 

> However I would understand that my good promise on this is not enough,

> so perhaps I could provide a combinatory verification that the same set

> of mbus/pixel formats end up with the same thing being written into

> registers.

> 

> In addition I understand that it will be necessary to split the changes

> up into small commits to clarify the transition path between the two

> drivers. So I will do my best to split things up.

> 

> Does that seem like an agreeable plan or do you see other things that

> would be blockers?


Please do refactor the patches into reviewable chunks that make sense on
their own. I'd see the result being the same driver but with additional
patches fixing bugs, doing some or more refactoring and adding new
functionality. Please use -C100 -M100 if there's a need to rename files,
and preferrably do so in separate patches.

See e.g. patches to the smiapp driver that turned it into a CCS driver:

	git log 2db8166f739e75c1269d7e8afe8da68e70098810..b24cc2a18c50e4e315abc76a86b26b4c49652f79~ -- drivers/media/i2c/smiapp
	git log drivers/media/i2c/ccs

Usually bugfixes are best put first.

> 

> My initial thought was that it would be much easier to review the driver as a

> rewrite, but I'm not too surprised I was wrong. To be honest it was nearly

> impossible to actually have the initial development happen as sequential steps

> and I preferred to allocate my time on other tasks than splitting the changes

> into these sequential steps.


This isn't really unusual when you're changing an existing driver:
sometimes you have to implement what you want to achieve in whole, and only
then figure out how to split it into something that can be reviewed. Often
the end result will look different than what you arrived with on the first
time.

-- 
Kind regards,

Sakari Ailus
diff mbox series

Patch

diff --git a/drivers/media/platform/sunxi/sun6i-csi/Kconfig b/drivers/media/platform/sunxi/sun6i-csi/Kconfig
deleted file mode 100644
index 586e3fb3a80d..000000000000
--- a/drivers/media/platform/sunxi/sun6i-csi/Kconfig
+++ /dev/null
@@ -1,12 +0,0 @@ 
-# SPDX-License-Identifier: GPL-2.0-only
-config VIDEO_SUN6I_CSI
-	tristate "Allwinner V3s Camera Sensor Interface driver"
-	depends on VIDEO_V4L2 && COMMON_CLK  && HAS_DMA
-	depends on ARCH_SUNXI || COMPILE_TEST
-	select MEDIA_CONTROLLER
-	select VIDEO_V4L2_SUBDEV_API
-	select VIDEOBUF2_DMA_CONTIG
-	select REGMAP_MMIO
-	select V4L2_FWNODE
-	help
-	   Support for the Allwinner Camera Sensor Interface Controller on V3s.
diff --git a/drivers/media/platform/sunxi/sun6i-csi/Makefile b/drivers/media/platform/sunxi/sun6i-csi/Makefile
deleted file mode 100644
index e7e315347804..000000000000
--- a/drivers/media/platform/sunxi/sun6i-csi/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@ 
-# SPDX-License-Identifier: GPL-2.0-only
-sun6i-csi-y += sun6i_video.o sun6i_csi.o
-
-obj-$(CONFIG_VIDEO_SUN6I_CSI) += sun6i-csi.o
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
deleted file mode 100644
index 27935f1e9555..000000000000
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
+++ /dev/null
@@ -1,936 +0,0 @@ 
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
- * All rights reserved.
- * Author: Yong Deng <yong.deng@magewell.com>
- */
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-#include <linux/fs.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/ioctl.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/regmap.h>
-#include <linux/reset.h>
-#include <linux/sched.h>
-#include <linux/sizes.h>
-#include <linux/slab.h>
-
-#include "sun6i_csi.h"
-#include "sun6i_csi_reg.h"
-
-#define MODULE_NAME	"sun6i-csi"
-
-struct sun6i_csi_dev {
-	struct sun6i_csi		csi;
-	struct device			*dev;
-
-	struct regmap			*regmap;
-	struct clk			*clk_mod;
-	struct clk			*clk_ram;
-	struct reset_control		*rstc_bus;
-
-	int				planar_offset[3];
-};
-
-static inline struct sun6i_csi_dev *sun6i_csi_to_dev(struct sun6i_csi *csi)
-{
-	return container_of(csi, struct sun6i_csi_dev, csi);
-}
-
-/* TODO add 10&12 bit YUV, RGB support */
-bool sun6i_csi_is_format_supported(struct sun6i_csi *csi,
-				   u32 pixformat, u32 mbus_code)
-{
-	struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
-
-	/*
-	 * Some video receivers have the ability to be compatible with
-	 * 8bit and 16bit bus width.
-	 * Identify the media bus format from device tree.
-	 */
-	if ((sdev->csi.v4l2_ep.bus_type == V4L2_MBUS_PARALLEL
-	     || sdev->csi.v4l2_ep.bus_type == V4L2_MBUS_BT656)
-	     && sdev->csi.v4l2_ep.bus.parallel.bus_width == 16) {
-		switch (pixformat) {
-		case V4L2_PIX_FMT_HM12:
-		case V4L2_PIX_FMT_NV12:
-		case V4L2_PIX_FMT_NV21:
-		case V4L2_PIX_FMT_NV16:
-		case V4L2_PIX_FMT_NV61:
-		case V4L2_PIX_FMT_YUV420:
-		case V4L2_PIX_FMT_YVU420:
-		case V4L2_PIX_FMT_YUV422P:
-			switch (mbus_code) {
-			case MEDIA_BUS_FMT_UYVY8_1X16:
-			case MEDIA_BUS_FMT_VYUY8_1X16:
-			case MEDIA_BUS_FMT_YUYV8_1X16:
-			case MEDIA_BUS_FMT_YVYU8_1X16:
-				return true;
-			default:
-				dev_dbg(sdev->dev, "Unsupported mbus code: 0x%x\n",
-					mbus_code);
-				break;
-			}
-			break;
-		default:
-			dev_dbg(sdev->dev, "Unsupported pixformat: 0x%x\n",
-				pixformat);
-			break;
-		}
-		return false;
-	}
-
-	switch (pixformat) {
-	case V4L2_PIX_FMT_SBGGR8:
-		return (mbus_code == MEDIA_BUS_FMT_SBGGR8_1X8);
-	case V4L2_PIX_FMT_SGBRG8:
-		return (mbus_code == MEDIA_BUS_FMT_SGBRG8_1X8);
-	case V4L2_PIX_FMT_SGRBG8:
-		return (mbus_code == MEDIA_BUS_FMT_SGRBG8_1X8);
-	case V4L2_PIX_FMT_SRGGB8:
-		return (mbus_code == MEDIA_BUS_FMT_SRGGB8_1X8);
-	case V4L2_PIX_FMT_SBGGR10:
-		return (mbus_code == MEDIA_BUS_FMT_SBGGR10_1X10);
-	case V4L2_PIX_FMT_SGBRG10:
-		return (mbus_code == MEDIA_BUS_FMT_SGBRG10_1X10);
-	case V4L2_PIX_FMT_SGRBG10:
-		return (mbus_code == MEDIA_BUS_FMT_SGRBG10_1X10);
-	case V4L2_PIX_FMT_SRGGB10:
-		return (mbus_code == MEDIA_BUS_FMT_SRGGB10_1X10);
-	case V4L2_PIX_FMT_SBGGR12:
-		return (mbus_code == MEDIA_BUS_FMT_SBGGR12_1X12);
-	case V4L2_PIX_FMT_SGBRG12:
-		return (mbus_code == MEDIA_BUS_FMT_SGBRG12_1X12);
-	case V4L2_PIX_FMT_SGRBG12:
-		return (mbus_code == MEDIA_BUS_FMT_SGRBG12_1X12);
-	case V4L2_PIX_FMT_SRGGB12:
-		return (mbus_code == MEDIA_BUS_FMT_SRGGB12_1X12);
-
-	case V4L2_PIX_FMT_YUYV:
-		return (mbus_code == MEDIA_BUS_FMT_YUYV8_2X8);
-	case V4L2_PIX_FMT_YVYU:
-		return (mbus_code == MEDIA_BUS_FMT_YVYU8_2X8);
-	case V4L2_PIX_FMT_UYVY:
-		return (mbus_code == MEDIA_BUS_FMT_UYVY8_2X8);
-	case V4L2_PIX_FMT_VYUY:
-		return (mbus_code == MEDIA_BUS_FMT_VYUY8_2X8);
-
-	case V4L2_PIX_FMT_HM12:
-	case V4L2_PIX_FMT_NV12:
-	case V4L2_PIX_FMT_NV21:
-	case V4L2_PIX_FMT_NV16:
-	case V4L2_PIX_FMT_NV61:
-	case V4L2_PIX_FMT_YUV420:
-	case V4L2_PIX_FMT_YVU420:
-	case V4L2_PIX_FMT_YUV422P:
-		switch (mbus_code) {
-		case MEDIA_BUS_FMT_UYVY8_2X8:
-		case MEDIA_BUS_FMT_VYUY8_2X8:
-		case MEDIA_BUS_FMT_YUYV8_2X8:
-		case MEDIA_BUS_FMT_YVYU8_2X8:
-			return true;
-		default:
-			dev_dbg(sdev->dev, "Unsupported mbus code: 0x%x\n",
-				mbus_code);
-			break;
-		}
-		break;
-
-	case V4L2_PIX_FMT_RGB565:
-		return (mbus_code == MEDIA_BUS_FMT_RGB565_2X8_LE);
-	case V4L2_PIX_FMT_RGB565X:
-		return (mbus_code == MEDIA_BUS_FMT_RGB565_2X8_BE);
-
-	case V4L2_PIX_FMT_JPEG:
-		return (mbus_code == MEDIA_BUS_FMT_JPEG_1X8);
-
-	default:
-		dev_dbg(sdev->dev, "Unsupported pixformat: 0x%x\n", pixformat);
-		break;
-	}
-
-	return false;
-}
-
-int sun6i_csi_set_power(struct sun6i_csi *csi, bool enable)
-{
-	struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
-	struct device *dev = sdev->dev;
-	struct regmap *regmap = sdev->regmap;
-	int ret;
-
-	if (!enable) {
-		regmap_update_bits(regmap, CSI_EN_REG, CSI_EN_CSI_EN, 0);
-
-		clk_disable_unprepare(sdev->clk_ram);
-		if (of_device_is_compatible(dev->of_node,
-					    "allwinner,sun50i-a64-csi"))
-			clk_rate_exclusive_put(sdev->clk_mod);
-		clk_disable_unprepare(sdev->clk_mod);
-		reset_control_assert(sdev->rstc_bus);
-		return 0;
-	}
-
-	ret = clk_prepare_enable(sdev->clk_mod);
-	if (ret) {
-		dev_err(sdev->dev, "Enable csi clk err %d\n", ret);
-		return ret;
-	}
-
-	if (of_device_is_compatible(dev->of_node, "allwinner,sun50i-a64-csi"))
-		clk_set_rate_exclusive(sdev->clk_mod, 300000000);
-
-	ret = clk_prepare_enable(sdev->clk_ram);
-	if (ret) {
-		dev_err(sdev->dev, "Enable clk_dram_csi clk err %d\n", ret);
-		goto clk_mod_disable;
-	}
-
-	ret = reset_control_deassert(sdev->rstc_bus);
-	if (ret) {
-		dev_err(sdev->dev, "reset err %d\n", ret);
-		goto clk_ram_disable;
-	}
-
-	regmap_update_bits(regmap, CSI_EN_REG, CSI_EN_CSI_EN, CSI_EN_CSI_EN);
-
-	return 0;
-
-clk_ram_disable:
-	clk_disable_unprepare(sdev->clk_ram);
-clk_mod_disable:
-	if (of_device_is_compatible(dev->of_node, "allwinner,sun50i-a64-csi"))
-		clk_rate_exclusive_put(sdev->clk_mod);
-	clk_disable_unprepare(sdev->clk_mod);
-	return ret;
-}
-
-static enum csi_input_fmt get_csi_input_format(struct sun6i_csi_dev *sdev,
-					       u32 mbus_code, u32 pixformat)
-{
-	/* non-YUV */
-	if ((mbus_code & 0xF000) != 0x2000)
-		return CSI_INPUT_FORMAT_RAW;
-
-	switch (pixformat) {
-	case V4L2_PIX_FMT_YUYV:
-	case V4L2_PIX_FMT_YVYU:
-	case V4L2_PIX_FMT_UYVY:
-	case V4L2_PIX_FMT_VYUY:
-		return CSI_INPUT_FORMAT_RAW;
-	default:
-		break;
-	}
-
-	/* not support YUV420 input format yet */
-	dev_dbg(sdev->dev, "Select YUV422 as default input format of CSI.\n");
-	return CSI_INPUT_FORMAT_YUV422;
-}
-
-static enum csi_output_fmt get_csi_output_format(struct sun6i_csi_dev *sdev,
-						 u32 pixformat, u32 field)
-{
-	bool buf_interlaced = false;
-
-	if (field == V4L2_FIELD_INTERLACED
-	    || field == V4L2_FIELD_INTERLACED_TB
-	    || field == V4L2_FIELD_INTERLACED_BT)
-		buf_interlaced = true;
-
-	switch (pixformat) {
-	case V4L2_PIX_FMT_SBGGR8:
-	case V4L2_PIX_FMT_SGBRG8:
-	case V4L2_PIX_FMT_SGRBG8:
-	case V4L2_PIX_FMT_SRGGB8:
-		return buf_interlaced ? CSI_FRAME_RAW_8 : CSI_FIELD_RAW_8;
-	case V4L2_PIX_FMT_SBGGR10:
-	case V4L2_PIX_FMT_SGBRG10:
-	case V4L2_PIX_FMT_SGRBG10:
-	case V4L2_PIX_FMT_SRGGB10:
-		return buf_interlaced ? CSI_FRAME_RAW_10 : CSI_FIELD_RAW_10;
-	case V4L2_PIX_FMT_SBGGR12:
-	case V4L2_PIX_FMT_SGBRG12:
-	case V4L2_PIX_FMT_SGRBG12:
-	case V4L2_PIX_FMT_SRGGB12:
-		return buf_interlaced ? CSI_FRAME_RAW_12 : CSI_FIELD_RAW_12;
-
-	case V4L2_PIX_FMT_YUYV:
-	case V4L2_PIX_FMT_YVYU:
-	case V4L2_PIX_FMT_UYVY:
-	case V4L2_PIX_FMT_VYUY:
-		return buf_interlaced ? CSI_FRAME_RAW_8 : CSI_FIELD_RAW_8;
-
-	case V4L2_PIX_FMT_HM12:
-		return buf_interlaced ? CSI_FRAME_MB_YUV420 :
-					CSI_FIELD_MB_YUV420;
-	case V4L2_PIX_FMT_NV12:
-	case V4L2_PIX_FMT_NV21:
-		return buf_interlaced ? CSI_FRAME_UV_CB_YUV420 :
-					CSI_FIELD_UV_CB_YUV420;
-	case V4L2_PIX_FMT_YUV420:
-	case V4L2_PIX_FMT_YVU420:
-		return buf_interlaced ? CSI_FRAME_PLANAR_YUV420 :
-					CSI_FIELD_PLANAR_YUV420;
-	case V4L2_PIX_FMT_NV16:
-	case V4L2_PIX_FMT_NV61:
-		return buf_interlaced ? CSI_FRAME_UV_CB_YUV422 :
-					CSI_FIELD_UV_CB_YUV422;
-	case V4L2_PIX_FMT_YUV422P:
-		return buf_interlaced ? CSI_FRAME_PLANAR_YUV422 :
-					CSI_FIELD_PLANAR_YUV422;
-
-	case V4L2_PIX_FMT_RGB565:
-	case V4L2_PIX_FMT_RGB565X:
-		return buf_interlaced ? CSI_FRAME_RGB565 : CSI_FIELD_RGB565;
-
-	case V4L2_PIX_FMT_JPEG:
-		return buf_interlaced ? CSI_FRAME_RAW_8 : CSI_FIELD_RAW_8;
-
-	default:
-		dev_warn(sdev->dev, "Unsupported pixformat: 0x%x\n", pixformat);
-		break;
-	}
-
-	return CSI_FIELD_RAW_8;
-}
-
-static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_dev *sdev,
-					    u32 mbus_code, u32 pixformat)
-{
-	/* Input sequence does not apply to non-YUV formats */
-	if ((mbus_code & 0xF000) != 0x2000)
-		return 0;
-
-	switch (pixformat) {
-	case V4L2_PIX_FMT_HM12:
-	case V4L2_PIX_FMT_NV12:
-	case V4L2_PIX_FMT_NV16:
-	case V4L2_PIX_FMT_YUV420:
-	case V4L2_PIX_FMT_YUV422P:
-		switch (mbus_code) {
-		case MEDIA_BUS_FMT_UYVY8_2X8:
-		case MEDIA_BUS_FMT_UYVY8_1X16:
-			return CSI_INPUT_SEQ_UYVY;
-		case MEDIA_BUS_FMT_VYUY8_2X8:
-		case MEDIA_BUS_FMT_VYUY8_1X16:
-			return CSI_INPUT_SEQ_VYUY;
-		case MEDIA_BUS_FMT_YUYV8_2X8:
-		case MEDIA_BUS_FMT_YUYV8_1X16:
-			return CSI_INPUT_SEQ_YUYV;
-		case MEDIA_BUS_FMT_YVYU8_1X16:
-		case MEDIA_BUS_FMT_YVYU8_2X8:
-			return CSI_INPUT_SEQ_YVYU;
-		default:
-			dev_warn(sdev->dev, "Unsupported mbus code: 0x%x\n",
-				 mbus_code);
-			break;
-		}
-		break;
-	case V4L2_PIX_FMT_NV21:
-	case V4L2_PIX_FMT_NV61:
-	case V4L2_PIX_FMT_YVU420:
-		switch (mbus_code) {
-		case MEDIA_BUS_FMT_UYVY8_2X8:
-		case MEDIA_BUS_FMT_UYVY8_1X16:
-			return CSI_INPUT_SEQ_VYUY;
-		case MEDIA_BUS_FMT_VYUY8_2X8:
-		case MEDIA_BUS_FMT_VYUY8_1X16:
-			return CSI_INPUT_SEQ_UYVY;
-		case MEDIA_BUS_FMT_YUYV8_2X8:
-		case MEDIA_BUS_FMT_YUYV8_1X16:
-			return CSI_INPUT_SEQ_YVYU;
-		case MEDIA_BUS_FMT_YVYU8_1X16:
-		case MEDIA_BUS_FMT_YVYU8_2X8:
-			return CSI_INPUT_SEQ_YUYV;
-		default:
-			dev_warn(sdev->dev, "Unsupported mbus code: 0x%x\n",
-				 mbus_code);
-			break;
-		}
-		break;
-
-	case V4L2_PIX_FMT_YUYV:
-		return CSI_INPUT_SEQ_YUYV;
-
-	default:
-		dev_warn(sdev->dev, "Unsupported pixformat: 0x%x, defaulting to YUYV\n",
-			 pixformat);
-		break;
-	}
-
-	return CSI_INPUT_SEQ_YUYV;
-}
-
-static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev)
-{
-	struct v4l2_fwnode_endpoint *endpoint = &sdev->csi.v4l2_ep;
-	struct sun6i_csi *csi = &sdev->csi;
-	unsigned char bus_width;
-	u32 flags;
-	u32 cfg;
-	bool input_interlaced = false;
-
-	if (csi->config.field == V4L2_FIELD_INTERLACED
-	    || csi->config.field == V4L2_FIELD_INTERLACED_TB
-	    || csi->config.field == V4L2_FIELD_INTERLACED_BT)
-		input_interlaced = true;
-
-	bus_width = endpoint->bus.parallel.bus_width;
-
-	regmap_read(sdev->regmap, CSI_IF_CFG_REG, &cfg);
-
-	cfg &= ~(CSI_IF_CFG_CSI_IF_MASK | CSI_IF_CFG_MIPI_IF_MASK |
-		 CSI_IF_CFG_IF_DATA_WIDTH_MASK |
-		 CSI_IF_CFG_CLK_POL_MASK | CSI_IF_CFG_VREF_POL_MASK |
-		 CSI_IF_CFG_HREF_POL_MASK | CSI_IF_CFG_FIELD_MASK |
-		 CSI_IF_CFG_SRC_TYPE_MASK);
-
-	if (input_interlaced)
-		cfg |= CSI_IF_CFG_SRC_TYPE_INTERLACED;
-	else
-		cfg |= CSI_IF_CFG_SRC_TYPE_PROGRESSED;
-
-	switch (endpoint->bus_type) {
-	case V4L2_MBUS_PARALLEL:
-		cfg |= CSI_IF_CFG_MIPI_IF_CSI;
-
-		flags = endpoint->bus.parallel.flags;
-
-		cfg |= (bus_width == 16) ? CSI_IF_CFG_CSI_IF_YUV422_16BIT :
-					   CSI_IF_CFG_CSI_IF_YUV422_INTLV;
-
-		if (flags & V4L2_MBUS_FIELD_EVEN_LOW)
-			cfg |= CSI_IF_CFG_FIELD_POSITIVE;
-
-		if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
-			cfg |= CSI_IF_CFG_VREF_POL_POSITIVE;
-		if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
-			cfg |= CSI_IF_CFG_HREF_POL_POSITIVE;
-
-		if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
-			cfg |= CSI_IF_CFG_CLK_POL_FALLING_EDGE;
-		break;
-	case V4L2_MBUS_BT656:
-		cfg |= CSI_IF_CFG_MIPI_IF_CSI;
-
-		flags = endpoint->bus.parallel.flags;
-
-		cfg |= (bus_width == 16) ? CSI_IF_CFG_CSI_IF_BT1120 :
-					   CSI_IF_CFG_CSI_IF_BT656;
-
-		if (flags & V4L2_MBUS_FIELD_EVEN_LOW)
-			cfg |= CSI_IF_CFG_FIELD_POSITIVE;
-
-		if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
-			cfg |= CSI_IF_CFG_CLK_POL_FALLING_EDGE;
-		break;
-	default:
-		dev_warn(sdev->dev, "Unsupported bus type: %d\n",
-			 endpoint->bus_type);
-		break;
-	}
-
-	switch (bus_width) {
-	case 8:
-		cfg |= CSI_IF_CFG_IF_DATA_WIDTH_8BIT;
-		break;
-	case 10:
-		cfg |= CSI_IF_CFG_IF_DATA_WIDTH_10BIT;
-		break;
-	case 12:
-		cfg |= CSI_IF_CFG_IF_DATA_WIDTH_12BIT;
-		break;
-	case 16: /* No need to configure DATA_WIDTH for 16bit */
-		break;
-	default:
-		dev_warn(sdev->dev, "Unsupported bus width: %u\n", bus_width);
-		break;
-	}
-
-	regmap_write(sdev->regmap, CSI_IF_CFG_REG, cfg);
-}
-
-static void sun6i_csi_set_format(struct sun6i_csi_dev *sdev)
-{
-	struct sun6i_csi *csi = &sdev->csi;
-	u32 cfg;
-	u32 val;
-
-	regmap_read(sdev->regmap, CSI_CH_CFG_REG, &cfg);
-
-	cfg &= ~(CSI_CH_CFG_INPUT_FMT_MASK |
-		 CSI_CH_CFG_OUTPUT_FMT_MASK | CSI_CH_CFG_VFLIP_EN |
-		 CSI_CH_CFG_HFLIP_EN | CSI_CH_CFG_FIELD_SEL_MASK |
-		 CSI_CH_CFG_INPUT_SEQ_MASK);
-
-	val = get_csi_input_format(sdev, csi->config.code,
-				   csi->config.pixelformat);
-	cfg |= CSI_CH_CFG_INPUT_FMT(val);
-
-	val = get_csi_output_format(sdev, csi->config.pixelformat,
-				    csi->config.field);
-	cfg |= CSI_CH_CFG_OUTPUT_FMT(val);
-
-	val = get_csi_input_seq(sdev, csi->config.code,
-				csi->config.pixelformat);
-	cfg |= CSI_CH_CFG_INPUT_SEQ(val);
-
-	if (csi->config.field == V4L2_FIELD_TOP)
-		cfg |= CSI_CH_CFG_FIELD_SEL_FIELD0;
-	else if (csi->config.field == V4L2_FIELD_BOTTOM)
-		cfg |= CSI_CH_CFG_FIELD_SEL_FIELD1;
-	else
-		cfg |= CSI_CH_CFG_FIELD_SEL_BOTH;
-
-	regmap_write(sdev->regmap, CSI_CH_CFG_REG, cfg);
-}
-
-static void sun6i_csi_set_window(struct sun6i_csi_dev *sdev)
-{
-	struct sun6i_csi_config *config = &sdev->csi.config;
-	u32 bytesperline_y;
-	u32 bytesperline_c;
-	int *planar_offset = sdev->planar_offset;
-	u32 width = config->width;
-	u32 height = config->height;
-	u32 hor_len = width;
-
-	switch (config->pixelformat) {
-	case V4L2_PIX_FMT_YUYV:
-	case V4L2_PIX_FMT_YVYU:
-	case V4L2_PIX_FMT_UYVY:
-	case V4L2_PIX_FMT_VYUY:
-		dev_dbg(sdev->dev,
-			"Horizontal length should be 2 times of width for packed YUV formats!\n");
-		hor_len = width * 2;
-		break;
-	default:
-		break;
-	}
-
-	regmap_write(sdev->regmap, CSI_CH_HSIZE_REG,
-		     CSI_CH_HSIZE_HOR_LEN(hor_len) |
-		     CSI_CH_HSIZE_HOR_START(0));
-	regmap_write(sdev->regmap, CSI_CH_VSIZE_REG,
-		     CSI_CH_VSIZE_VER_LEN(height) |
-		     CSI_CH_VSIZE_VER_START(0));
-
-	planar_offset[0] = 0;
-	switch (config->pixelformat) {
-	case V4L2_PIX_FMT_HM12:
-	case V4L2_PIX_FMT_NV12:
-	case V4L2_PIX_FMT_NV21:
-	case V4L2_PIX_FMT_NV16:
-	case V4L2_PIX_FMT_NV61:
-		bytesperline_y = width;
-		bytesperline_c = width;
-		planar_offset[1] = bytesperline_y * height;
-		planar_offset[2] = -1;
-		break;
-	case V4L2_PIX_FMT_YUV420:
-	case V4L2_PIX_FMT_YVU420:
-		bytesperline_y = width;
-		bytesperline_c = width / 2;
-		planar_offset[1] = bytesperline_y * height;
-		planar_offset[2] = planar_offset[1] +
-				bytesperline_c * height / 2;
-		break;
-	case V4L2_PIX_FMT_YUV422P:
-		bytesperline_y = width;
-		bytesperline_c = width / 2;
-		planar_offset[1] = bytesperline_y * height;
-		planar_offset[2] = planar_offset[1] +
-				bytesperline_c * height;
-		break;
-	default: /* raw */
-		dev_dbg(sdev->dev,
-			"Calculating pixelformat(0x%x)'s bytesperline as a packed format\n",
-			config->pixelformat);
-		bytesperline_y = (sun6i_csi_get_bpp(config->pixelformat) *
-				  config->width) / 8;
-		bytesperline_c = 0;
-		planar_offset[1] = -1;
-		planar_offset[2] = -1;
-		break;
-	}
-
-	regmap_write(sdev->regmap, CSI_CH_BUF_LEN_REG,
-		     CSI_CH_BUF_LEN_BUF_LEN_C(bytesperline_c) |
-		     CSI_CH_BUF_LEN_BUF_LEN_Y(bytesperline_y));
-}
-
-int sun6i_csi_update_config(struct sun6i_csi *csi,
-			    struct sun6i_csi_config *config)
-{
-	struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
-
-	if (!config)
-		return -EINVAL;
-
-	memcpy(&csi->config, config, sizeof(csi->config));
-
-	sun6i_csi_setup_bus(sdev);
-	sun6i_csi_set_format(sdev);
-	sun6i_csi_set_window(sdev);
-
-	return 0;
-}
-
-void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr)
-{
-	struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
-
-	regmap_write(sdev->regmap, CSI_CH_F0_BUFA_REG,
-		     (addr + sdev->planar_offset[0]) >> 2);
-	if (sdev->planar_offset[1] != -1)
-		regmap_write(sdev->regmap, CSI_CH_F1_BUFA_REG,
-			     (addr + sdev->planar_offset[1]) >> 2);
-	if (sdev->planar_offset[2] != -1)
-		regmap_write(sdev->regmap, CSI_CH_F2_BUFA_REG,
-			     (addr + sdev->planar_offset[2]) >> 2);
-}
-
-void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable)
-{
-	struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
-	struct regmap *regmap = sdev->regmap;
-
-	if (!enable) {
-		regmap_update_bits(regmap, CSI_CAP_REG, CSI_CAP_CH0_VCAP_ON, 0);
-		regmap_write(regmap, CSI_CH_INT_EN_REG, 0);
-		return;
-	}
-
-	regmap_write(regmap, CSI_CH_INT_STA_REG, 0xFF);
-	regmap_write(regmap, CSI_CH_INT_EN_REG,
-		     CSI_CH_INT_EN_HB_OF_INT_EN |
-		     CSI_CH_INT_EN_FIFO2_OF_INT_EN |
-		     CSI_CH_INT_EN_FIFO1_OF_INT_EN |
-		     CSI_CH_INT_EN_FIFO0_OF_INT_EN |
-		     CSI_CH_INT_EN_FD_INT_EN |
-		     CSI_CH_INT_EN_CD_INT_EN);
-
-	regmap_update_bits(regmap, CSI_CAP_REG, CSI_CAP_CH0_VCAP_ON,
-			   CSI_CAP_CH0_VCAP_ON);
-}
-
-/* -----------------------------------------------------------------------------
- * Media Controller and V4L2
- */
-static int sun6i_csi_link_entity(struct sun6i_csi *csi,
-				 struct media_entity *entity,
-				 struct fwnode_handle *fwnode)
-{
-	struct media_entity *sink;
-	struct media_pad *sink_pad;
-	int src_pad_index;
-	int ret;
-
-	ret = media_entity_get_fwnode_pad(entity, fwnode, MEDIA_PAD_FL_SOURCE);
-	if (ret < 0) {
-		dev_err(csi->dev, "%s: no source pad in external entity %s\n",
-			__func__, entity->name);
-		return -EINVAL;
-	}
-
-	src_pad_index = ret;
-
-	sink = &csi->video.vdev.entity;
-	sink_pad = &csi->video.pad;
-
-	dev_dbg(csi->dev, "creating %s:%u -> %s:%u link\n",
-		entity->name, src_pad_index, sink->name, sink_pad->index);
-	ret = media_create_pad_link(entity, src_pad_index, sink,
-				    sink_pad->index,
-				    MEDIA_LNK_FL_ENABLED |
-				    MEDIA_LNK_FL_IMMUTABLE);
-	if (ret < 0) {
-		dev_err(csi->dev, "failed to create %s:%u -> %s:%u link\n",
-			entity->name, src_pad_index,
-			sink->name, sink_pad->index);
-		return ret;
-	}
-
-	return 0;
-}
-
-static int sun6i_subdev_notify_complete(struct v4l2_async_notifier *notifier)
-{
-	struct sun6i_csi *csi = container_of(notifier, struct sun6i_csi,
-					     notifier);
-	struct v4l2_device *v4l2_dev = &csi->v4l2_dev;
-	struct v4l2_subdev *sd;
-	int ret;
-
-	dev_dbg(csi->dev, "notify complete, all subdevs registered\n");
-
-	sd = list_first_entry(&v4l2_dev->subdevs, struct v4l2_subdev, list);
-	if (!sd)
-		return -EINVAL;
-
-	ret = sun6i_csi_link_entity(csi, &sd->entity, sd->fwnode);
-	if (ret < 0)
-		return ret;
-
-	ret = v4l2_device_register_subdev_nodes(&csi->v4l2_dev);
-	if (ret < 0)
-		return ret;
-
-	return media_device_register(&csi->media_dev);
-}
-
-static const struct v4l2_async_notifier_operations sun6i_csi_async_ops = {
-	.complete = sun6i_subdev_notify_complete,
-};
-
-static int sun6i_csi_fwnode_parse(struct device *dev,
-				  struct v4l2_fwnode_endpoint *vep,
-				  struct v4l2_async_subdev *asd)
-{
-	struct sun6i_csi *csi = dev_get_drvdata(dev);
-
-	if (vep->base.port || vep->base.id) {
-		dev_warn(dev, "Only support a single port with one endpoint\n");
-		return -ENOTCONN;
-	}
-
-	switch (vep->bus_type) {
-	case V4L2_MBUS_PARALLEL:
-	case V4L2_MBUS_BT656:
-		csi->v4l2_ep = *vep;
-		return 0;
-	default:
-		dev_err(dev, "Unsupported media bus type\n");
-		return -ENOTCONN;
-	}
-}
-
-static void sun6i_csi_v4l2_cleanup(struct sun6i_csi *csi)
-{
-	media_device_unregister(&csi->media_dev);
-	v4l2_async_notifier_unregister(&csi->notifier);
-	v4l2_async_notifier_cleanup(&csi->notifier);
-	sun6i_video_cleanup(&csi->video);
-	v4l2_device_unregister(&csi->v4l2_dev);
-	v4l2_ctrl_handler_free(&csi->ctrl_handler);
-	media_device_cleanup(&csi->media_dev);
-}
-
-static int sun6i_csi_v4l2_init(struct sun6i_csi *csi)
-{
-	int ret;
-
-	csi->media_dev.dev = csi->dev;
-	strscpy(csi->media_dev.model, "Allwinner Video Capture Device",
-		sizeof(csi->media_dev.model));
-	csi->media_dev.hw_revision = 0;
-	snprintf(csi->media_dev.bus_info, sizeof(csi->media_dev.bus_info),
-		 "platform:%s", dev_name(csi->dev));
-
-	media_device_init(&csi->media_dev);
-	v4l2_async_notifier_init(&csi->notifier);
-
-	ret = v4l2_ctrl_handler_init(&csi->ctrl_handler, 0);
-	if (ret) {
-		dev_err(csi->dev, "V4L2 controls handler init failed (%d)\n",
-			ret);
-		goto clean_media;
-	}
-
-	csi->v4l2_dev.mdev = &csi->media_dev;
-	csi->v4l2_dev.ctrl_handler = &csi->ctrl_handler;
-	ret = v4l2_device_register(csi->dev, &csi->v4l2_dev);
-	if (ret) {
-		dev_err(csi->dev, "V4L2 device registration failed (%d)\n",
-			ret);
-		goto free_ctrl;
-	}
-
-	ret = sun6i_video_init(&csi->video, csi, "sun6i-csi");
-	if (ret)
-		goto unreg_v4l2;
-
-	ret = v4l2_async_notifier_parse_fwnode_endpoints(csi->dev,
-							 &csi->notifier,
-							 sizeof(struct v4l2_async_subdev),
-							 sun6i_csi_fwnode_parse);
-	if (ret)
-		goto clean_video;
-
-	csi->notifier.ops = &sun6i_csi_async_ops;
-
-	ret = v4l2_async_notifier_register(&csi->v4l2_dev, &csi->notifier);
-	if (ret) {
-		dev_err(csi->dev, "notifier registration failed\n");
-		goto clean_video;
-	}
-
-	return 0;
-
-clean_video:
-	sun6i_video_cleanup(&csi->video);
-unreg_v4l2:
-	v4l2_device_unregister(&csi->v4l2_dev);
-free_ctrl:
-	v4l2_ctrl_handler_free(&csi->ctrl_handler);
-clean_media:
-	v4l2_async_notifier_cleanup(&csi->notifier);
-	media_device_cleanup(&csi->media_dev);
-
-	return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * Resources and IRQ
- */
-static irqreturn_t sun6i_csi_isr(int irq, void *dev_id)
-{
-	struct sun6i_csi_dev *sdev = (struct sun6i_csi_dev *)dev_id;
-	struct regmap *regmap = sdev->regmap;
-	u32 status;
-
-	regmap_read(regmap, CSI_CH_INT_STA_REG, &status);
-
-	if (!(status & 0xFF))
-		return IRQ_NONE;
-
-	if ((status & CSI_CH_INT_STA_FIFO0_OF_PD) ||
-	    (status & CSI_CH_INT_STA_FIFO1_OF_PD) ||
-	    (status & CSI_CH_INT_STA_FIFO2_OF_PD) ||
-	    (status & CSI_CH_INT_STA_HB_OF_PD)) {
-		regmap_write(regmap, CSI_CH_INT_STA_REG, status);
-		regmap_update_bits(regmap, CSI_EN_REG, CSI_EN_CSI_EN, 0);
-		regmap_update_bits(regmap, CSI_EN_REG, CSI_EN_CSI_EN,
-				   CSI_EN_CSI_EN);
-		return IRQ_HANDLED;
-	}
-
-	if (status & CSI_CH_INT_STA_FD_PD)
-		sun6i_video_frame_done(&sdev->csi.video);
-
-	regmap_write(regmap, CSI_CH_INT_STA_REG, status);
-
-	return IRQ_HANDLED;
-}
-
-static const struct regmap_config sun6i_csi_regmap_config = {
-	.reg_bits       = 32,
-	.reg_stride     = 4,
-	.val_bits       = 32,
-	.max_register	= 0x9c,
-};
-
-static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
-				      struct platform_device *pdev)
-{
-	struct resource *res;
-	void __iomem *io_base;
-	int ret;
-	int irq;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	io_base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(io_base))
-		return PTR_ERR(io_base);
-
-	sdev->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "bus", io_base,
-						 &sun6i_csi_regmap_config);
-	if (IS_ERR(sdev->regmap)) {
-		dev_err(&pdev->dev, "Failed to init register map\n");
-		return PTR_ERR(sdev->regmap);
-	}
-
-	sdev->clk_mod = devm_clk_get(&pdev->dev, "mod");
-	if (IS_ERR(sdev->clk_mod)) {
-		dev_err(&pdev->dev, "Unable to acquire csi clock\n");
-		return PTR_ERR(sdev->clk_mod);
-	}
-
-	sdev->clk_ram = devm_clk_get(&pdev->dev, "ram");
-	if (IS_ERR(sdev->clk_ram)) {
-		dev_err(&pdev->dev, "Unable to acquire dram-csi clock\n");
-		return PTR_ERR(sdev->clk_ram);
-	}
-
-	sdev->rstc_bus = devm_reset_control_get_shared(&pdev->dev, NULL);
-	if (IS_ERR(sdev->rstc_bus)) {
-		dev_err(&pdev->dev, "Cannot get reset controller\n");
-		return PTR_ERR(sdev->rstc_bus);
-	}
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return -ENXIO;
-
-	ret = devm_request_irq(&pdev->dev, irq, sun6i_csi_isr, 0, MODULE_NAME,
-			       sdev);
-	if (ret) {
-		dev_err(&pdev->dev, "Cannot request csi IRQ\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int sun6i_csi_probe(struct platform_device *pdev)
-{
-	struct sun6i_csi_dev *sdev;
-	int ret;
-
-	sdev = devm_kzalloc(&pdev->dev, sizeof(*sdev), GFP_KERNEL);
-	if (!sdev)
-		return -ENOMEM;
-
-	sdev->dev = &pdev->dev;
-
-	ret = sun6i_csi_resource_request(sdev, pdev);
-	if (ret)
-		return ret;
-
-	platform_set_drvdata(pdev, sdev);
-
-	sdev->csi.dev = &pdev->dev;
-	return sun6i_csi_v4l2_init(&sdev->csi);
-}
-
-static int sun6i_csi_remove(struct platform_device *pdev)
-{
-	struct sun6i_csi_dev *sdev = platform_get_drvdata(pdev);
-
-	sun6i_csi_v4l2_cleanup(&sdev->csi);
-
-	return 0;
-}
-
-static const struct of_device_id sun6i_csi_of_match[] = {
-	{ .compatible = "allwinner,sun6i-a31-csi", },
-	{ .compatible = "allwinner,sun8i-a83t-csi", },
-	{ .compatible = "allwinner,sun8i-h3-csi", },
-	{ .compatible = "allwinner,sun8i-v3s-csi", },
-	{ .compatible = "allwinner,sun50i-a64-csi", },
-	{},
-};
-MODULE_DEVICE_TABLE(of, sun6i_csi_of_match);
-
-static struct platform_driver sun6i_csi_platform_driver = {
-	.probe = sun6i_csi_probe,
-	.remove = sun6i_csi_remove,
-	.driver = {
-		.name = MODULE_NAME,
-		.of_match_table = of_match_ptr(sun6i_csi_of_match),
-	},
-};
-module_platform_driver(sun6i_csi_platform_driver);
-
-MODULE_DESCRIPTION("Allwinner V3s Camera Sensor Interface driver");
-MODULE_AUTHOR("Yong Deng <yong.deng@magewell.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
deleted file mode 100644
index c626821aaedb..000000000000
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
+++ /dev/null
@@ -1,138 +0,0 @@ 
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
- * All rights reserved.
- * Author: Yong Deng <yong.deng@magewell.com>
- */
-
-#ifndef __SUN6I_CSI_H__
-#define __SUN6I_CSI_H__
-
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-fwnode.h>
-
-#include "sun6i_video.h"
-
-struct sun6i_csi;
-
-/**
- * struct sun6i_csi_config - configs for sun6i csi
- * @pixelformat: v4l2 pixel format (V4L2_PIX_FMT_*)
- * @code:	media bus format code (MEDIA_BUS_FMT_*)
- * @field:	used interlacing type (enum v4l2_field)
- * @width:	frame width
- * @height:	frame height
- */
-struct sun6i_csi_config {
-	u32		pixelformat;
-	u32		code;
-	u32		field;
-	u32		width;
-	u32		height;
-};
-
-struct sun6i_csi {
-	struct device			*dev;
-	struct v4l2_ctrl_handler	ctrl_handler;
-	struct v4l2_device		v4l2_dev;
-	struct media_device		media_dev;
-
-	struct v4l2_async_notifier	notifier;
-
-	/* video port settings */
-	struct v4l2_fwnode_endpoint	v4l2_ep;
-
-	struct sun6i_csi_config		config;
-
-	struct sun6i_video		video;
-};
-
-/**
- * sun6i_csi_is_format_supported() - check if the format supported by csi
- * @csi:	pointer to the csi
- * @pixformat:	v4l2 pixel format (V4L2_PIX_FMT_*)
- * @mbus_code:	media bus format code (MEDIA_BUS_FMT_*)
- */
-bool sun6i_csi_is_format_supported(struct sun6i_csi *csi, u32 pixformat,
-				   u32 mbus_code);
-
-/**
- * sun6i_csi_set_power() - power on/off the csi
- * @csi:	pointer to the csi
- * @enable:	on/off
- */
-int sun6i_csi_set_power(struct sun6i_csi *csi, bool enable);
-
-/**
- * sun6i_csi_update_config() - update the csi register settings
- * @csi:	pointer to the csi
- * @config:	see struct sun6i_csi_config
- */
-int sun6i_csi_update_config(struct sun6i_csi *csi,
-			    struct sun6i_csi_config *config);
-
-/**
- * sun6i_csi_update_buf_addr() - update the csi frame buffer address
- * @csi:	pointer to the csi
- * @addr:	frame buffer's physical address
- */
-void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr);
-
-/**
- * sun6i_csi_set_stream() - start/stop csi streaming
- * @csi:	pointer to the csi
- * @enable:	start/stop
- */
-void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable);
-
-/* get bpp form v4l2 pixformat */
-static inline int sun6i_csi_get_bpp(unsigned int pixformat)
-{
-	switch (pixformat) {
-	case V4L2_PIX_FMT_SBGGR8:
-	case V4L2_PIX_FMT_SGBRG8:
-	case V4L2_PIX_FMT_SGRBG8:
-	case V4L2_PIX_FMT_SRGGB8:
-	case V4L2_PIX_FMT_JPEG:
-		return 8;
-	case V4L2_PIX_FMT_SBGGR10:
-	case V4L2_PIX_FMT_SGBRG10:
-	case V4L2_PIX_FMT_SGRBG10:
-	case V4L2_PIX_FMT_SRGGB10:
-		return 10;
-	case V4L2_PIX_FMT_SBGGR12:
-	case V4L2_PIX_FMT_SGBRG12:
-	case V4L2_PIX_FMT_SGRBG12:
-	case V4L2_PIX_FMT_SRGGB12:
-	case V4L2_PIX_FMT_HM12:
-	case V4L2_PIX_FMT_NV12:
-	case V4L2_PIX_FMT_NV21:
-	case V4L2_PIX_FMT_YUV420:
-	case V4L2_PIX_FMT_YVU420:
-		return 12;
-	case V4L2_PIX_FMT_YUYV:
-	case V4L2_PIX_FMT_YVYU:
-	case V4L2_PIX_FMT_UYVY:
-	case V4L2_PIX_FMT_VYUY:
-	case V4L2_PIX_FMT_NV16:
-	case V4L2_PIX_FMT_NV61:
-	case V4L2_PIX_FMT_YUV422P:
-	case V4L2_PIX_FMT_RGB565:
-	case V4L2_PIX_FMT_RGB565X:
-		return 16;
-	case V4L2_PIX_FMT_RGB24:
-	case V4L2_PIX_FMT_BGR24:
-		return 24;
-	case V4L2_PIX_FMT_RGB32:
-	case V4L2_PIX_FMT_BGR32:
-		return 32;
-	default:
-		WARN(1, "Unsupported pixformat: 0x%x\n", pixformat);
-		break;
-	}
-
-	return 0;
-}
-
-#endif /* __SUN6I_CSI_H__ */
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
deleted file mode 100644
index 703fa14bb313..000000000000
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
+++ /dev/null
@@ -1,196 +0,0 @@ 
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
- * All rights reserved.
- * Author: Yong Deng <yong.deng@magewell.com>
- */
-
-#ifndef __SUN6I_CSI_REG_H__
-#define __SUN6I_CSI_REG_H__
-
-#include <linux/kernel.h>
-
-#define CSI_EN_REG			0x0
-#define CSI_EN_VER_EN				BIT(30)
-#define CSI_EN_CSI_EN				BIT(0)
-
-#define CSI_IF_CFG_REG			0x4
-#define CSI_IF_CFG_SRC_TYPE_MASK		BIT(21)
-#define CSI_IF_CFG_SRC_TYPE_PROGRESSED		((0 << 21) & CSI_IF_CFG_SRC_TYPE_MASK)
-#define CSI_IF_CFG_SRC_TYPE_INTERLACED		((1 << 21) & CSI_IF_CFG_SRC_TYPE_MASK)
-#define CSI_IF_CFG_FPS_DS_EN			BIT(20)
-#define CSI_IF_CFG_FIELD_MASK			BIT(19)
-#define CSI_IF_CFG_FIELD_NEGATIVE		((0 << 19) & CSI_IF_CFG_FIELD_MASK)
-#define CSI_IF_CFG_FIELD_POSITIVE		((1 << 19) & CSI_IF_CFG_FIELD_MASK)
-#define CSI_IF_CFG_VREF_POL_MASK		BIT(18)
-#define CSI_IF_CFG_VREF_POL_NEGATIVE		((0 << 18) & CSI_IF_CFG_VREF_POL_MASK)
-#define CSI_IF_CFG_VREF_POL_POSITIVE		((1 << 18) & CSI_IF_CFG_VREF_POL_MASK)
-#define CSI_IF_CFG_HREF_POL_MASK		BIT(17)
-#define CSI_IF_CFG_HREF_POL_NEGATIVE		((0 << 17) & CSI_IF_CFG_HREF_POL_MASK)
-#define CSI_IF_CFG_HREF_POL_POSITIVE		((1 << 17) & CSI_IF_CFG_HREF_POL_MASK)
-#define CSI_IF_CFG_CLK_POL_MASK			BIT(16)
-#define CSI_IF_CFG_CLK_POL_RISING_EDGE		((0 << 16) & CSI_IF_CFG_CLK_POL_MASK)
-#define CSI_IF_CFG_CLK_POL_FALLING_EDGE		((1 << 16) & CSI_IF_CFG_CLK_POL_MASK)
-#define CSI_IF_CFG_IF_DATA_WIDTH_MASK		GENMASK(10, 8)
-#define CSI_IF_CFG_IF_DATA_WIDTH_8BIT		((0 << 8) & CSI_IF_CFG_IF_DATA_WIDTH_MASK)
-#define CSI_IF_CFG_IF_DATA_WIDTH_10BIT		((1 << 8) & CSI_IF_CFG_IF_DATA_WIDTH_MASK)
-#define CSI_IF_CFG_IF_DATA_WIDTH_12BIT		((2 << 8) & CSI_IF_CFG_IF_DATA_WIDTH_MASK)
-#define CSI_IF_CFG_MIPI_IF_MASK			BIT(7)
-#define CSI_IF_CFG_MIPI_IF_CSI			(0 << 7)
-#define CSI_IF_CFG_MIPI_IF_MIPI			BIT(7)
-#define CSI_IF_CFG_CSI_IF_MASK			GENMASK(4, 0)
-#define CSI_IF_CFG_CSI_IF_YUV422_INTLV		((0 << 0) & CSI_IF_CFG_CSI_IF_MASK)
-#define CSI_IF_CFG_CSI_IF_YUV422_16BIT		((1 << 0) & CSI_IF_CFG_CSI_IF_MASK)
-#define CSI_IF_CFG_CSI_IF_BT656			((4 << 0) & CSI_IF_CFG_CSI_IF_MASK)
-#define CSI_IF_CFG_CSI_IF_BT1120		((5 << 0) & CSI_IF_CFG_CSI_IF_MASK)
-
-#define CSI_CAP_REG			0x8
-#define CSI_CAP_CH0_CAP_MASK_MASK		GENMASK(5, 2)
-#define CSI_CAP_CH0_CAP_MASK(count)		(((count) << 2) & CSI_CAP_CH0_CAP_MASK_MASK)
-#define CSI_CAP_CH0_VCAP_ON			BIT(1)
-#define CSI_CAP_CH0_SCAP_ON			BIT(0)
-
-#define CSI_SYNC_CNT_REG		0xc
-#define CSI_FIFO_THRS_REG		0x10
-#define CSI_BT656_HEAD_CFG_REG		0x14
-#define CSI_PTN_LEN_REG			0x30
-#define CSI_PTN_ADDR_REG		0x34
-#define CSI_VER_REG			0x3c
-
-#define CSI_CH_CFG_REG			0x44
-#define CSI_CH_CFG_INPUT_FMT_MASK		GENMASK(23, 20)
-#define CSI_CH_CFG_INPUT_FMT(fmt)		(((fmt) << 20) & CSI_CH_CFG_INPUT_FMT_MASK)
-#define CSI_CH_CFG_OUTPUT_FMT_MASK		GENMASK(19, 16)
-#define CSI_CH_CFG_OUTPUT_FMT(fmt)		(((fmt) << 16) & CSI_CH_CFG_OUTPUT_FMT_MASK)
-#define CSI_CH_CFG_VFLIP_EN			BIT(13)
-#define CSI_CH_CFG_HFLIP_EN			BIT(12)
-#define CSI_CH_CFG_FIELD_SEL_MASK		GENMASK(11, 10)
-#define CSI_CH_CFG_FIELD_SEL_FIELD0		((0 << 10) & CSI_CH_CFG_FIELD_SEL_MASK)
-#define CSI_CH_CFG_FIELD_SEL_FIELD1		((1 << 10) & CSI_CH_CFG_FIELD_SEL_MASK)
-#define CSI_CH_CFG_FIELD_SEL_BOTH		((2 << 10) & CSI_CH_CFG_FIELD_SEL_MASK)
-#define CSI_CH_CFG_INPUT_SEQ_MASK		GENMASK(9, 8)
-#define CSI_CH_CFG_INPUT_SEQ(seq)		(((seq) << 8) & CSI_CH_CFG_INPUT_SEQ_MASK)
-
-#define CSI_CH_SCALE_REG		0x4c
-#define CSI_CH_SCALE_QUART_EN			BIT(0)
-
-#define CSI_CH_F0_BUFA_REG		0x50
-
-#define CSI_CH_F1_BUFA_REG		0x58
-
-#define CSI_CH_F2_BUFA_REG		0x60
-
-#define CSI_CH_STA_REG			0x6c
-#define CSI_CH_STA_FIELD_STA_MASK		BIT(2)
-#define CSI_CH_STA_FIELD_STA_FIELD0		((0 << 2) & CSI_CH_STA_FIELD_STA_MASK)
-#define CSI_CH_STA_FIELD_STA_FIELD1		((1 << 2) & CSI_CH_STA_FIELD_STA_MASK)
-#define CSI_CH_STA_VCAP_STA			BIT(1)
-#define CSI_CH_STA_SCAP_STA			BIT(0)
-
-#define CSI_CH_INT_EN_REG		0x70
-#define CSI_CH_INT_EN_VS_INT_EN			BIT(7)
-#define CSI_CH_INT_EN_HB_OF_INT_EN		BIT(6)
-#define CSI_CH_INT_EN_MUL_ERR_INT_EN		BIT(5)
-#define CSI_CH_INT_EN_FIFO2_OF_INT_EN		BIT(4)
-#define CSI_CH_INT_EN_FIFO1_OF_INT_EN		BIT(3)
-#define CSI_CH_INT_EN_FIFO0_OF_INT_EN		BIT(2)
-#define CSI_CH_INT_EN_FD_INT_EN			BIT(1)
-#define CSI_CH_INT_EN_CD_INT_EN			BIT(0)
-
-#define CSI_CH_INT_STA_REG		0x74
-#define CSI_CH_INT_STA_VS_PD			BIT(7)
-#define CSI_CH_INT_STA_HB_OF_PD			BIT(6)
-#define CSI_CH_INT_STA_MUL_ERR_PD		BIT(5)
-#define CSI_CH_INT_STA_FIFO2_OF_PD		BIT(4)
-#define CSI_CH_INT_STA_FIFO1_OF_PD		BIT(3)
-#define CSI_CH_INT_STA_FIFO0_OF_PD		BIT(2)
-#define CSI_CH_INT_STA_FD_PD			BIT(1)
-#define CSI_CH_INT_STA_CD_PD			BIT(0)
-
-#define CSI_CH_FLD1_VSIZE_REG		0x78
-
-#define CSI_CH_HSIZE_REG		0x80
-#define CSI_CH_HSIZE_HOR_LEN_MASK		GENMASK(28, 16)
-#define CSI_CH_HSIZE_HOR_LEN(len)		(((len) << 16) & CSI_CH_HSIZE_HOR_LEN_MASK)
-#define CSI_CH_HSIZE_HOR_START_MASK		GENMASK(12, 0)
-#define CSI_CH_HSIZE_HOR_START(start)		(((start) << 0) & CSI_CH_HSIZE_HOR_START_MASK)
-
-#define CSI_CH_VSIZE_REG		0x84
-#define CSI_CH_VSIZE_VER_LEN_MASK		GENMASK(28, 16)
-#define CSI_CH_VSIZE_VER_LEN(len)		(((len) << 16) & CSI_CH_VSIZE_VER_LEN_MASK)
-#define CSI_CH_VSIZE_VER_START_MASK		GENMASK(12, 0)
-#define CSI_CH_VSIZE_VER_START(start)		(((start) << 0) & CSI_CH_VSIZE_VER_START_MASK)
-
-#define CSI_CH_BUF_LEN_REG		0x88
-#define CSI_CH_BUF_LEN_BUF_LEN_C_MASK		GENMASK(29, 16)
-#define CSI_CH_BUF_LEN_BUF_LEN_C(len)		(((len) << 16) & CSI_CH_BUF_LEN_BUF_LEN_C_MASK)
-#define CSI_CH_BUF_LEN_BUF_LEN_Y_MASK		GENMASK(13, 0)
-#define CSI_CH_BUF_LEN_BUF_LEN_Y(len)		(((len) << 0) & CSI_CH_BUF_LEN_BUF_LEN_Y_MASK)
-
-#define CSI_CH_FLIP_SIZE_REG		0x8c
-#define CSI_CH_FLIP_SIZE_VER_LEN_MASK		GENMASK(28, 16)
-#define CSI_CH_FLIP_SIZE_VER_LEN(len)		(((len) << 16) & CSI_CH_FLIP_SIZE_VER_LEN_MASK)
-#define CSI_CH_FLIP_SIZE_VALID_LEN_MASK		GENMASK(12, 0)
-#define CSI_CH_FLIP_SIZE_VALID_LEN(len)		(((len) << 0) & CSI_CH_FLIP_SIZE_VALID_LEN_MASK)
-
-#define CSI_CH_FRM_CLK_CNT_REG		0x90
-#define CSI_CH_ACC_ITNL_CLK_CNT_REG	0x94
-#define CSI_CH_FIFO_STAT_REG		0x98
-#define CSI_CH_PCLK_STAT_REG		0x9c
-
-/*
- * csi input data format
- */
-enum csi_input_fmt {
-	CSI_INPUT_FORMAT_RAW		= 0,
-	CSI_INPUT_FORMAT_YUV422		= 3,
-	CSI_INPUT_FORMAT_YUV420		= 4,
-};
-
-/*
- * csi output data format
- */
-enum csi_output_fmt {
-	/* only when input format is RAW */
-	CSI_FIELD_RAW_8			= 0,
-	CSI_FIELD_RAW_10		= 1,
-	CSI_FIELD_RAW_12		= 2,
-	CSI_FIELD_RGB565		= 4,
-	CSI_FIELD_RGB888		= 5,
-	CSI_FIELD_PRGB888		= 6,
-	CSI_FRAME_RAW_8			= 8,
-	CSI_FRAME_RAW_10		= 9,
-	CSI_FRAME_RAW_12		= 10,
-	CSI_FRAME_RGB565		= 12,
-	CSI_FRAME_RGB888		= 13,
-	CSI_FRAME_PRGB888		= 14,
-
-	/* only when input format is YUV422 */
-	CSI_FIELD_PLANAR_YUV422		= 0,
-	CSI_FIELD_PLANAR_YUV420		= 1,
-	CSI_FRAME_PLANAR_YUV420		= 2,
-	CSI_FRAME_PLANAR_YUV422		= 3,
-	CSI_FIELD_UV_CB_YUV422		= 4,
-	CSI_FIELD_UV_CB_YUV420		= 5,
-	CSI_FRAME_UV_CB_YUV420		= 6,
-	CSI_FRAME_UV_CB_YUV422		= 7,
-	CSI_FIELD_MB_YUV422		= 8,
-	CSI_FIELD_MB_YUV420		= 9,
-	CSI_FRAME_MB_YUV420		= 10,
-	CSI_FRAME_MB_YUV422		= 11,
-	CSI_FIELD_UV_CB_YUV422_10	= 12,
-	CSI_FIELD_UV_CB_YUV420_10	= 13,
-};
-
-/*
- * csi YUV input data sequence
- */
-enum csi_input_seq {
-	/* only when input format is YUV422 */
-	CSI_INPUT_SEQ_YUYV = 0,
-	CSI_INPUT_SEQ_YVYU,
-	CSI_INPUT_SEQ_UYVY,
-	CSI_INPUT_SEQ_VYUY,
-};
-
-#endif /* __SUN6I_CSI_REG_H__ */
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
deleted file mode 100644
index 07b2161392d2..000000000000
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
+++ /dev/null
@@ -1,683 +0,0 @@ 
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
- * All rights reserved.
- * Author: Yong Deng <yong.deng@magewell.com>
- */
-
-#include <linux/of.h>
-
-#include <media/v4l2-device.h>
-#include <media/v4l2-event.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-mc.h>
-#include <media/videobuf2-dma-contig.h>
-#include <media/videobuf2-v4l2.h>
-
-#include "sun6i_csi.h"
-#include "sun6i_video.h"
-
-/* This is got from BSP sources. */
-#define MIN_WIDTH	(32)
-#define MIN_HEIGHT	(32)
-#define MAX_WIDTH	(4800)
-#define MAX_HEIGHT	(4800)
-
-struct sun6i_csi_buffer {
-	struct vb2_v4l2_buffer		vb;
-	struct list_head		list;
-
-	dma_addr_t			dma_addr;
-	bool				queued_to_csi;
-};
-
-static const u32 supported_pixformats[] = {
-	V4L2_PIX_FMT_SBGGR8,
-	V4L2_PIX_FMT_SGBRG8,
-	V4L2_PIX_FMT_SGRBG8,
-	V4L2_PIX_FMT_SRGGB8,
-	V4L2_PIX_FMT_SBGGR10,
-	V4L2_PIX_FMT_SGBRG10,
-	V4L2_PIX_FMT_SGRBG10,
-	V4L2_PIX_FMT_SRGGB10,
-	V4L2_PIX_FMT_SBGGR12,
-	V4L2_PIX_FMT_SGBRG12,
-	V4L2_PIX_FMT_SGRBG12,
-	V4L2_PIX_FMT_SRGGB12,
-	V4L2_PIX_FMT_YUYV,
-	V4L2_PIX_FMT_YVYU,
-	V4L2_PIX_FMT_UYVY,
-	V4L2_PIX_FMT_VYUY,
-	V4L2_PIX_FMT_HM12,
-	V4L2_PIX_FMT_NV12,
-	V4L2_PIX_FMT_NV21,
-	V4L2_PIX_FMT_YUV420,
-	V4L2_PIX_FMT_YVU420,
-	V4L2_PIX_FMT_NV16,
-	V4L2_PIX_FMT_NV61,
-	V4L2_PIX_FMT_YUV422P,
-	V4L2_PIX_FMT_RGB565,
-	V4L2_PIX_FMT_RGB565X,
-	V4L2_PIX_FMT_JPEG,
-};
-
-static bool is_pixformat_valid(unsigned int pixformat)
-{
-	unsigned int i;
-
-	for (i = 0; i < ARRAY_SIZE(supported_pixformats); i++)
-		if (supported_pixformats[i] == pixformat)
-			return true;
-
-	return false;
-}
-
-static struct v4l2_subdev *
-sun6i_video_remote_subdev(struct sun6i_video *video, u32 *pad)
-{
-	struct media_pad *remote;
-
-	remote = media_entity_remote_pad(&video->pad);
-
-	if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
-		return NULL;
-
-	if (pad)
-		*pad = remote->index;
-
-	return media_entity_to_v4l2_subdev(remote->entity);
-}
-
-static int sun6i_video_queue_setup(struct vb2_queue *vq,
-				   unsigned int *nbuffers,
-				   unsigned int *nplanes,
-				   unsigned int sizes[],
-				   struct device *alloc_devs[])
-{
-	struct sun6i_video *video = vb2_get_drv_priv(vq);
-	unsigned int size = video->fmt.fmt.pix.sizeimage;
-
-	if (*nplanes)
-		return sizes[0] < size ? -EINVAL : 0;
-
-	*nplanes = 1;
-	sizes[0] = size;
-
-	return 0;
-}
-
-static int sun6i_video_buffer_prepare(struct vb2_buffer *vb)
-{
-	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
-	struct sun6i_csi_buffer *buf =
-			container_of(vbuf, struct sun6i_csi_buffer, vb);
-	struct sun6i_video *video = vb2_get_drv_priv(vb->vb2_queue);
-	unsigned long size = video->fmt.fmt.pix.sizeimage;
-
-	if (vb2_plane_size(vb, 0) < size) {
-		v4l2_err(video->vdev.v4l2_dev, "buffer too small (%lu < %lu)\n",
-			 vb2_plane_size(vb, 0), size);
-		return -EINVAL;
-	}
-
-	vb2_set_plane_payload(vb, 0, size);
-
-	buf->dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
-
-	vbuf->field = video->fmt.fmt.pix.field;
-
-	return 0;
-}
-
-static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count)
-{
-	struct sun6i_video *video = vb2_get_drv_priv(vq);
-	struct sun6i_csi_buffer *buf;
-	struct sun6i_csi_buffer *next_buf;
-	struct sun6i_csi_config config;
-	struct v4l2_subdev *subdev;
-	unsigned long flags;
-	int ret;
-
-	video->sequence = 0;
-
-	ret = media_pipeline_start(&video->vdev.entity, &video->vdev.pipe);
-	if (ret < 0)
-		goto clear_dma_queue;
-
-	if (video->mbus_code == 0) {
-		ret = -EINVAL;
-		goto stop_media_pipeline;
-	}
-
-	subdev = sun6i_video_remote_subdev(video, NULL);
-	if (!subdev) {
-		ret = -EINVAL;
-		goto stop_media_pipeline;
-	}
-
-	config.pixelformat = video->fmt.fmt.pix.pixelformat;
-	config.code = video->mbus_code;
-	config.field = video->fmt.fmt.pix.field;
-	config.width = video->fmt.fmt.pix.width;
-	config.height = video->fmt.fmt.pix.height;
-
-	ret = sun6i_csi_update_config(video->csi, &config);
-	if (ret < 0)
-		goto stop_media_pipeline;
-
-	spin_lock_irqsave(&video->dma_queue_lock, flags);
-
-	buf = list_first_entry(&video->dma_queue,
-			       struct sun6i_csi_buffer, list);
-	buf->queued_to_csi = true;
-	sun6i_csi_update_buf_addr(video->csi, buf->dma_addr);
-
-	sun6i_csi_set_stream(video->csi, true);
-
-	/*
-	 * CSI will lookup the next dma buffer for next frame before the
-	 * the current frame done IRQ triggered. This is not documented
-	 * but reported by Ondřej Jirman.
-	 * The BSP code has workaround for this too. It skip to mark the
-	 * first buffer as frame done for VB2 and pass the second buffer
-	 * to CSI in the first frame done ISR call. Then in second frame
-	 * done ISR call, it mark the first buffer as frame done for VB2
-	 * and pass the third buffer to CSI. And so on. The bad thing is
-	 * that the first buffer will be written twice and the first frame
-	 * is dropped even the queued buffer is sufficient.
-	 * So, I make some improvement here. Pass the next buffer to CSI
-	 * just follow starting the CSI. In this case, the first frame
-	 * will be stored in first buffer, second frame in second buffer.
-	 * This method is used to avoid dropping the first frame, it
-	 * would also drop frame when lacking of queued buffer.
-	 */
-	next_buf = list_next_entry(buf, list);
-	next_buf->queued_to_csi = true;
-	sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr);
-
-	spin_unlock_irqrestore(&video->dma_queue_lock, flags);
-
-	ret = v4l2_subdev_call(subdev, video, s_stream, 1);
-	if (ret && ret != -ENOIOCTLCMD)
-		goto stop_csi_stream;
-
-	return 0;
-
-stop_csi_stream:
-	sun6i_csi_set_stream(video->csi, false);
-stop_media_pipeline:
-	media_pipeline_stop(&video->vdev.entity);
-clear_dma_queue:
-	spin_lock_irqsave(&video->dma_queue_lock, flags);
-	list_for_each_entry(buf, &video->dma_queue, list)
-		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
-	INIT_LIST_HEAD(&video->dma_queue);
-	spin_unlock_irqrestore(&video->dma_queue_lock, flags);
-
-	return ret;
-}
-
-static void sun6i_video_stop_streaming(struct vb2_queue *vq)
-{
-	struct sun6i_video *video = vb2_get_drv_priv(vq);
-	struct v4l2_subdev *subdev;
-	unsigned long flags;
-	struct sun6i_csi_buffer *buf;
-
-	subdev = sun6i_video_remote_subdev(video, NULL);
-	if (subdev)
-		v4l2_subdev_call(subdev, video, s_stream, 0);
-
-	sun6i_csi_set_stream(video->csi, false);
-
-	media_pipeline_stop(&video->vdev.entity);
-
-	/* Release all active buffers */
-	spin_lock_irqsave(&video->dma_queue_lock, flags);
-	list_for_each_entry(buf, &video->dma_queue, list)
-		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
-	INIT_LIST_HEAD(&video->dma_queue);
-	spin_unlock_irqrestore(&video->dma_queue_lock, flags);
-}
-
-static void sun6i_video_buffer_queue(struct vb2_buffer *vb)
-{
-	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
-	struct sun6i_csi_buffer *buf =
-			container_of(vbuf, struct sun6i_csi_buffer, vb);
-	struct sun6i_video *video = vb2_get_drv_priv(vb->vb2_queue);
-	unsigned long flags;
-
-	spin_lock_irqsave(&video->dma_queue_lock, flags);
-	buf->queued_to_csi = false;
-	list_add_tail(&buf->list, &video->dma_queue);
-	spin_unlock_irqrestore(&video->dma_queue_lock, flags);
-}
-
-void sun6i_video_frame_done(struct sun6i_video *video)
-{
-	struct sun6i_csi_buffer *buf;
-	struct sun6i_csi_buffer *next_buf;
-	struct vb2_v4l2_buffer *vbuf;
-
-	spin_lock(&video->dma_queue_lock);
-
-	buf = list_first_entry(&video->dma_queue,
-			       struct sun6i_csi_buffer, list);
-	if (list_is_last(&buf->list, &video->dma_queue)) {
-		dev_dbg(video->csi->dev, "Frame dropped!\n");
-		goto unlock;
-	}
-
-	next_buf = list_next_entry(buf, list);
-	/* If a new buffer (#next_buf) had not been queued to CSI, the old
-	 * buffer (#buf) is still holding by CSI for storing the next
-	 * frame. So, we queue a new buffer (#next_buf) to CSI then wait
-	 * for next ISR call.
-	 */
-	if (!next_buf->queued_to_csi) {
-		next_buf->queued_to_csi = true;
-		sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr);
-		dev_dbg(video->csi->dev, "Frame dropped!\n");
-		goto unlock;
-	}
-
-	list_del(&buf->list);
-	vbuf = &buf->vb;
-	vbuf->vb2_buf.timestamp = ktime_get_ns();
-	vbuf->sequence = video->sequence;
-	vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_DONE);
-
-	/* Prepare buffer for next frame but one.  */
-	if (!list_is_last(&next_buf->list, &video->dma_queue)) {
-		next_buf = list_next_entry(next_buf, list);
-		next_buf->queued_to_csi = true;
-		sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr);
-	} else {
-		dev_dbg(video->csi->dev, "Next frame will be dropped!\n");
-	}
-
-unlock:
-	video->sequence++;
-	spin_unlock(&video->dma_queue_lock);
-}
-
-static const struct vb2_ops sun6i_csi_vb2_ops = {
-	.queue_setup		= sun6i_video_queue_setup,
-	.wait_prepare		= vb2_ops_wait_prepare,
-	.wait_finish		= vb2_ops_wait_finish,
-	.buf_prepare		= sun6i_video_buffer_prepare,
-	.start_streaming	= sun6i_video_start_streaming,
-	.stop_streaming		= sun6i_video_stop_streaming,
-	.buf_queue		= sun6i_video_buffer_queue,
-};
-
-static int vidioc_querycap(struct file *file, void *priv,
-			   struct v4l2_capability *cap)
-{
-	struct sun6i_video *video = video_drvdata(file);
-
-	strscpy(cap->driver, "sun6i-video", sizeof(cap->driver));
-	strscpy(cap->card, video->vdev.name, sizeof(cap->card));
-	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
-		 video->csi->dev->of_node->name);
-
-	return 0;
-}
-
-static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
-				   struct v4l2_fmtdesc *f)
-{
-	u32 index = f->index;
-
-	if (index >= ARRAY_SIZE(supported_pixformats))
-		return -EINVAL;
-
-	f->pixelformat = supported_pixformats[index];
-
-	return 0;
-}
-
-static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
-				struct v4l2_format *fmt)
-{
-	struct sun6i_video *video = video_drvdata(file);
-
-	*fmt = video->fmt;
-
-	return 0;
-}
-
-static int sun6i_video_try_fmt(struct sun6i_video *video,
-			       struct v4l2_format *f)
-{
-	struct v4l2_pix_format *pixfmt = &f->fmt.pix;
-	int bpp;
-
-	if (!is_pixformat_valid(pixfmt->pixelformat))
-		pixfmt->pixelformat = supported_pixformats[0];
-
-	v4l_bound_align_image(&pixfmt->width, MIN_WIDTH, MAX_WIDTH, 1,
-			      &pixfmt->height, MIN_HEIGHT, MAX_WIDTH, 1, 1);
-
-	bpp = sun6i_csi_get_bpp(pixfmt->pixelformat);
-	pixfmt->bytesperline = (pixfmt->width * bpp) >> 3;
-	pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
-
-	if (pixfmt->field == V4L2_FIELD_ANY)
-		pixfmt->field = V4L2_FIELD_NONE;
-
-	pixfmt->colorspace = V4L2_COLORSPACE_RAW;
-	pixfmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
-	pixfmt->quantization = V4L2_QUANTIZATION_DEFAULT;
-	pixfmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
-
-	return 0;
-}
-
-static int sun6i_video_set_fmt(struct sun6i_video *video, struct v4l2_format *f)
-{
-	int ret;
-
-	ret = sun6i_video_try_fmt(video, f);
-	if (ret)
-		return ret;
-
-	video->fmt = *f;
-
-	return 0;
-}
-
-static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
-				struct v4l2_format *f)
-{
-	struct sun6i_video *video = video_drvdata(file);
-
-	if (vb2_is_busy(&video->vb2_vidq))
-		return -EBUSY;
-
-	return sun6i_video_set_fmt(video, f);
-}
-
-static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
-				  struct v4l2_format *f)
-{
-	struct sun6i_video *video = video_drvdata(file);
-
-	return sun6i_video_try_fmt(video, f);
-}
-
-static int vidioc_enum_input(struct file *file, void *fh,
-			     struct v4l2_input *inp)
-{
-	if (inp->index != 0)
-		return -EINVAL;
-
-	strscpy(inp->name, "camera", sizeof(inp->name));
-	inp->type = V4L2_INPUT_TYPE_CAMERA;
-
-	return 0;
-}
-
-static int vidioc_g_input(struct file *file, void *fh, unsigned int *i)
-{
-	*i = 0;
-
-	return 0;
-}
-
-static int vidioc_s_input(struct file *file, void *fh, unsigned int i)
-{
-	if (i != 0)
-		return -EINVAL;
-
-	return 0;
-}
-
-static const struct v4l2_ioctl_ops sun6i_video_ioctl_ops = {
-	.vidioc_querycap		= vidioc_querycap,
-	.vidioc_enum_fmt_vid_cap	= vidioc_enum_fmt_vid_cap,
-	.vidioc_g_fmt_vid_cap		= vidioc_g_fmt_vid_cap,
-	.vidioc_s_fmt_vid_cap		= vidioc_s_fmt_vid_cap,
-	.vidioc_try_fmt_vid_cap		= vidioc_try_fmt_vid_cap,
-
-	.vidioc_enum_input		= vidioc_enum_input,
-	.vidioc_s_input			= vidioc_s_input,
-	.vidioc_g_input			= vidioc_g_input,
-
-	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
-	.vidioc_querybuf		= vb2_ioctl_querybuf,
-	.vidioc_qbuf			= vb2_ioctl_qbuf,
-	.vidioc_expbuf			= vb2_ioctl_expbuf,
-	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
-	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
-	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
-	.vidioc_streamon		= vb2_ioctl_streamon,
-	.vidioc_streamoff		= vb2_ioctl_streamoff,
-
-	.vidioc_log_status		= v4l2_ctrl_log_status,
-	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
-	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
-};
-
-/* -----------------------------------------------------------------------------
- * V4L2 file operations
- */
-static int sun6i_video_open(struct file *file)
-{
-	struct sun6i_video *video = video_drvdata(file);
-	int ret;
-
-	if (mutex_lock_interruptible(&video->lock))
-		return -ERESTARTSYS;
-
-	ret = v4l2_fh_open(file);
-	if (ret < 0)
-		goto unlock;
-
-	ret = v4l2_pipeline_pm_get(&video->vdev.entity);
-	if (ret < 0)
-		goto fh_release;
-
-	/* check if already powered */
-	if (!v4l2_fh_is_singular_file(file)) {
-		ret = -EBUSY;
-		goto unlock;
-	}
-
-	ret = sun6i_csi_set_power(video->csi, true);
-	if (ret < 0)
-		goto fh_release;
-
-	mutex_unlock(&video->lock);
-	return 0;
-
-fh_release:
-	v4l2_fh_release(file);
-unlock:
-	mutex_unlock(&video->lock);
-	return ret;
-}
-
-static int sun6i_video_close(struct file *file)
-{
-	struct sun6i_video *video = video_drvdata(file);
-	bool last_fh;
-
-	mutex_lock(&video->lock);
-
-	last_fh = v4l2_fh_is_singular_file(file);
-
-	_vb2_fop_release(file, NULL);
-
-	v4l2_pipeline_pm_put(&video->vdev.entity);
-
-	if (last_fh)
-		sun6i_csi_set_power(video->csi, false);
-
-	mutex_unlock(&video->lock);
-
-	return 0;
-}
-
-static const struct v4l2_file_operations sun6i_video_fops = {
-	.owner		= THIS_MODULE,
-	.open		= sun6i_video_open,
-	.release	= sun6i_video_close,
-	.unlocked_ioctl	= video_ioctl2,
-	.mmap		= vb2_fop_mmap,
-	.poll		= vb2_fop_poll
-};
-
-/* -----------------------------------------------------------------------------
- * Media Operations
- */
-static int sun6i_video_link_validate_get_format(struct media_pad *pad,
-						struct v4l2_subdev_format *fmt)
-{
-	if (is_media_entity_v4l2_subdev(pad->entity)) {
-		struct v4l2_subdev *sd =
-				media_entity_to_v4l2_subdev(pad->entity);
-
-		fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
-		fmt->pad = pad->index;
-		return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
-	}
-
-	return -EINVAL;
-}
-
-static int sun6i_video_link_validate(struct media_link *link)
-{
-	struct video_device *vdev = container_of(link->sink->entity,
-						 struct video_device, entity);
-	struct sun6i_video *video = video_get_drvdata(vdev);
-	struct v4l2_subdev_format source_fmt;
-	int ret;
-
-	video->mbus_code = 0;
-
-	if (!media_entity_remote_pad(link->sink->entity->pads)) {
-		dev_info(video->csi->dev,
-			 "video node %s pad not connected\n", vdev->name);
-		return -ENOLINK;
-	}
-
-	ret = sun6i_video_link_validate_get_format(link->source, &source_fmt);
-	if (ret < 0)
-		return ret;
-
-	if (!sun6i_csi_is_format_supported(video->csi,
-					   video->fmt.fmt.pix.pixelformat,
-					   source_fmt.format.code)) {
-		dev_err(video->csi->dev,
-			"Unsupported pixformat: 0x%x with mbus code: 0x%x!\n",
-			video->fmt.fmt.pix.pixelformat,
-			source_fmt.format.code);
-		return -EPIPE;
-	}
-
-	if (source_fmt.format.width != video->fmt.fmt.pix.width ||
-	    source_fmt.format.height != video->fmt.fmt.pix.height) {
-		dev_err(video->csi->dev,
-			"Wrong width or height %ux%u (%ux%u expected)\n",
-			video->fmt.fmt.pix.width, video->fmt.fmt.pix.height,
-			source_fmt.format.width, source_fmt.format.height);
-		return -EPIPE;
-	}
-
-	video->mbus_code = source_fmt.format.code;
-
-	return 0;
-}
-
-static const struct media_entity_operations sun6i_video_media_ops = {
-	.link_validate = sun6i_video_link_validate
-};
-
-int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi,
-		     const char *name)
-{
-	struct video_device *vdev = &video->vdev;
-	struct vb2_queue *vidq = &video->vb2_vidq;
-	struct v4l2_format fmt = { 0 };
-	int ret;
-
-	video->csi = csi;
-
-	/* Initialize the media entity... */
-	video->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
-	vdev->entity.ops = &sun6i_video_media_ops;
-	ret = media_entity_pads_init(&vdev->entity, 1, &video->pad);
-	if (ret < 0)
-		return ret;
-
-	mutex_init(&video->lock);
-
-	INIT_LIST_HEAD(&video->dma_queue);
-	spin_lock_init(&video->dma_queue_lock);
-
-	video->sequence = 0;
-
-	/* Setup default format */
-	fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	fmt.fmt.pix.pixelformat = supported_pixformats[0];
-	fmt.fmt.pix.width = 1280;
-	fmt.fmt.pix.height = 720;
-	fmt.fmt.pix.field = V4L2_FIELD_NONE;
-	sun6i_video_set_fmt(video, &fmt);
-
-	/* Initialize videobuf2 queue */
-	vidq->type			= V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	vidq->io_modes			= VB2_MMAP | VB2_DMABUF;
-	vidq->drv_priv			= video;
-	vidq->buf_struct_size		= sizeof(struct sun6i_csi_buffer);
-	vidq->ops			= &sun6i_csi_vb2_ops;
-	vidq->mem_ops			= &vb2_dma_contig_memops;
-	vidq->timestamp_flags		= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	vidq->lock			= &video->lock;
-	/* Make sure non-dropped frame */
-	vidq->min_buffers_needed	= 3;
-	vidq->dev			= csi->dev;
-
-	ret = vb2_queue_init(vidq);
-	if (ret) {
-		v4l2_err(&csi->v4l2_dev, "vb2_queue_init failed: %d\n", ret);
-		goto clean_entity;
-	}
-
-	/* Register video device */
-	strscpy(vdev->name, name, sizeof(vdev->name));
-	vdev->release		= video_device_release_empty;
-	vdev->fops		= &sun6i_video_fops;
-	vdev->ioctl_ops		= &sun6i_video_ioctl_ops;
-	vdev->vfl_type		= VFL_TYPE_VIDEO;
-	vdev->vfl_dir		= VFL_DIR_RX;
-	vdev->v4l2_dev		= &csi->v4l2_dev;
-	vdev->queue		= vidq;
-	vdev->lock		= &video->lock;
-	vdev->device_caps	= V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE;
-	video_set_drvdata(vdev, video);
-
-	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
-	if (ret < 0) {
-		v4l2_err(&csi->v4l2_dev,
-			 "video_register_device failed: %d\n", ret);
-		goto clean_entity;
-	}
-
-	return 0;
-
-clean_entity:
-	media_entity_cleanup(&video->vdev.entity);
-	mutex_destroy(&video->lock);
-	return ret;
-}
-
-void sun6i_video_cleanup(struct sun6i_video *video)
-{
-	vb2_video_unregister_device(&video->vdev);
-	media_entity_cleanup(&video->vdev.entity);
-	mutex_destroy(&video->lock);
-}
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h
deleted file mode 100644
index b9cd919c24ac..000000000000
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h
+++ /dev/null
@@ -1,38 +0,0 @@ 
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
- * All rights reserved.
- * Author: Yong Deng <yong.deng@magewell.com>
- */
-
-#ifndef __SUN6I_VIDEO_H__
-#define __SUN6I_VIDEO_H__
-
-#include <media/v4l2-dev.h>
-#include <media/videobuf2-core.h>
-
-struct sun6i_csi;
-
-struct sun6i_video {
-	struct video_device		vdev;
-	struct media_pad		pad;
-	struct sun6i_csi		*csi;
-
-	struct mutex			lock;
-
-	struct vb2_queue		vb2_vidq;
-	spinlock_t			dma_queue_lock;
-	struct list_head		dma_queue;
-
-	unsigned int			sequence;
-	struct v4l2_format		fmt;
-	u32				mbus_code;
-};
-
-int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi,
-		     const char *name);
-void sun6i_video_cleanup(struct sun6i_video *video);
-
-void sun6i_video_frame_done(struct sun6i_video *video);
-
-#endif /* __SUN6I_VIDEO_H__ */