From patchwork Sat Mar 3 17:39:12 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Liu X-Patchwork-Id: 7079 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id 03CBE23EB0 for ; Sat, 3 Mar 2012 17:40:06 +0000 (UTC) Received: from mail-iy0-f180.google.com (mail-iy0-f180.google.com [209.85.210.180]) by fiordland.canonical.com (Postfix) with ESMTP id 9CC3EA18640 for ; Sat, 3 Mar 2012 17:40:05 +0000 (UTC) Received: by iage36 with SMTP id e36so5019126iag.11 for ; Sat, 03 Mar 2012 09:40:04 -0800 (PST) Received: from mr.google.com ([10.43.52.74]) by 10.43.52.74 with SMTP id vl10mr9534403icb.55.1330796404965 (num_hops = 1); Sat, 03 Mar 2012 09:40:04 -0800 (PST) Received: by 10.43.52.74 with SMTP id vl10mr7842345icb.55.1330796404861; Sat, 03 Mar 2012 09:40:04 -0800 (PST) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.231.53.18 with SMTP id k18csp10040ibg; Sat, 3 Mar 2012 09:40:03 -0800 (PST) Received: by 10.68.219.9 with SMTP id pk9mr5423538pbc.141.1330796402766; Sat, 03 Mar 2012 09:40:02 -0800 (PST) Received: from mail-pw0-f50.google.com (mail-pw0-f50.google.com [209.85.160.50]) by mx.google.com with ESMTPS id b6si13281530pbd.340.2012.03.03.09.40.02 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 03 Mar 2012 09:40:02 -0800 (PST) Received-SPF: neutral (google.com: 209.85.160.50 is neither permitted nor denied by best guess record for domain of paul.liu@linaro.org) client-ip=209.85.160.50; Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.160.50 is neither permitted nor denied by best guess record for domain of paul.liu@linaro.org) smtp.mail=paul.liu@linaro.org Received: by pbcwz7 with SMTP id wz7so3587066pbc.37 for ; Sat, 03 Mar 2012 09:40:02 -0800 (PST) Received-SPF: pass (google.com: domain of paul.liu@linaro.org designates 10.68.204.6 as permitted sender) client-ip=10.68.204.6; Received: from mr.google.com ([10.68.204.6]) by 10.68.204.6 with SMTP id ku6mr30186634pbc.157.1330796402432 (num_hops = 1); Sat, 03 Mar 2012 09:40:02 -0800 (PST) MIME-Version: 1.0 Received: by 10.68.204.6 with SMTP id ku6mr25544110pbc.157.1330796402153; Sat, 03 Mar 2012 09:40:02 -0800 (PST) Received: from freya.lan (host-77.138-185-111.static.totalbb.net.tw. [111.185.138.77]) by mx.google.com with ESMTPS id s1sm8293728pbs.21.2012.03.03.09.39.58 (version=SSLv3 cipher=OTHER); Sat, 03 Mar 2012 09:40:01 -0800 (PST) From: "Ying-Chun Liu (PaulLiu)" To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linaro-dev@lists.linaro.org, patches@linaro.org, "Ying-Chun Liu (PaulLiu)" , Samuel Ortiz , Mark Brown , Shawn Guo , Venu Byravarasu , Peter Korsgaard Subject: [PATCH v7 1/2] mfd: Add anatop mfd driver Date: Sun, 4 Mar 2012 01:39:12 +0800 Message-Id: <1330796352-6884-1-git-send-email-paul.liu@linaro.org> X-Mailer: git-send-email 1.7.9.1 In-Reply-To: <1330671641-6439-1-git-send-email-paul.liu@linaro.org> References: <1330671641-6439-1-git-send-email-paul.liu@linaro.org> X-Gm-Message-State: ALoCoQkyC4oAi6IedfSG79WqF3QwLA38HAUhUYPeVfIrx3DZxh1gWjRtuDk9+xZH3/hzCnQnAZE5 From: "Ying-Chun Liu (PaulLiu)" Anatop is a mfd chip embedded in Freescale i.MX6Q SoC. Anatop provides regulators and thermal. This driver handles the address space and the operation of the mfd device. Signed-off-by: Ying-Chun Liu (PaulLiu) Cc: Samuel Ortiz Cc: Mark Brown Cc: Shawn Guo Cc: Venu Byravarasu Cc: Peter Korsgaard Acked-by: Shawn Guo --- drivers/mfd/Kconfig | 6 ++ drivers/mfd/Makefile | 1 + drivers/mfd/anatop-mfd.c | 142 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/anatop.h | 40 ++++++++++++ 4 files changed, 189 insertions(+), 0 deletions(-) create mode 100644 drivers/mfd/anatop-mfd.c create mode 100644 include/linux/mfd/anatop.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index f147395..78593e8 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -830,6 +830,12 @@ config MFD_INTEL_MSIC Passage) chip. This chip embeds audio, battery, GPIO, etc. devices used in Intel Medfield platforms. +config MFD_ANATOP + bool "Support for Anatop" + depends on SOC_IMX6Q + help + Select this option to enable Anatop MFD driver. + endmenu endif diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index b953bab..8e11060 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -112,3 +112,4 @@ obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o obj-$(CONFIG_MFD_S5M_CORE) += s5m-core.o s5m-irq.o +obj-$(CONFIG_MFD_ANATOP) += anatop-mfd.o diff --git a/drivers/mfd/anatop-mfd.c b/drivers/mfd/anatop-mfd.c new file mode 100644 index 0000000..0307051 --- /dev/null +++ b/drivers/mfd/anatop-mfd.c @@ -0,0 +1,142 @@ +/* + * Anatop MFD driver + * + * Copyright (C) 2012 Ying-Chun Liu (PaulLiu) + * Copyright (C) 2012 Linaro + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include +#include +#include +#include +#include +#include +#include + +u32 anatop_get_bits(struct anatop *adata, u32 addr, int bit_shift, int bits) +{ + u32 val; + int mask; + + if (bits == 32) + mask = ~0; + else + mask = (1 << bits) - 1; + + val = readl(adata->ioreg + addr); + val = (val >> bit_shift) & mask; + + return val; +} +EXPORT_SYMBOL(anatop_get_bits); + +void anatop_set_bits(struct anatop *adata, u32 addr, int bit_shift, + int bits, u32 data) +{ + u32 val; + int mask; + if (bits == 32) + mask = ~0; + else + mask = (1 << bits) - 1; + + spin_lock(&adata->reglock); + val = readl(adata->ioreg + addr) & ~(mask << bit_shift); + writel((data << bit_shift) | val, adata->ioreg); + spin_unlock(&adata->reglock); +} +EXPORT_SYMBOL(anatop_set_bits); + +static const struct of_device_id of_anatop_subdevice_match[] = { + { .compatible = "fsl,anatop-regulator", }, + { .compatible = "fsl,anatop-thermal", }, + { }, +}; + +static int of_anatop_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + void *ioreg; + struct anatop *drvdata; + + ioreg = of_iomap(np, 0); + if (!ioreg) + return -EINVAL; + drvdata = devm_kzalloc(dev, sizeof(struct anatop), GFP_KERNEL); + if (!drvdata) + return -EINVAL; + drvdata->ioreg = ioreg; + spin_lock_init(&drvdata->reglock); + platform_set_drvdata(pdev, drvdata); + of_platform_bus_probe(np, of_anatop_subdevice_match, dev); + + return 0; +} + +static int of_anatop_remove(struct platform_device *pdev) +{ + struct anatop *drvdata; + drvdata = platform_get_drvdata(pdev); + iounmap(drvdata->ioreg); + return 0; +} + +static const struct of_device_id of_anatop_match[] = { + { .compatible = "fsl,imx6q-anatop", }, + { }, +}; + +static struct platform_driver anatop_of_driver = { + .driver = { + .name = "anatop-mfd", + .owner = THIS_MODULE, + .of_match_table = of_anatop_match, + }, + .probe = of_anatop_probe, + .remove = of_anatop_remove, +}; + +static int __init anatop_init(void) +{ + return platform_driver_register(&anatop_of_driver); +} +postcore_initcall(anatop_init); + +static void __exit anatop_exit(void) +{ + platform_driver_unregister(&anatop_of_driver); +} +module_exit(anatop_exit); + +MODULE_AUTHOR("Ying-Chun Liu (PaulLiu) "); +MODULE_DESCRIPTION("ANATOP MFD driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/anatop.h b/include/linux/mfd/anatop.h new file mode 100644 index 0000000..22c1007 --- /dev/null +++ b/include/linux/mfd/anatop.h @@ -0,0 +1,40 @@ +/* + * anatop.h - Anatop MFD driver + * + * Copyright (C) 2012 Ying-Chun Liu (PaulLiu) + * Copyright (C) 2012 Linaro + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_MFD_ANATOP_H +#define __LINUX_MFD_ANATOP_H + +#include + +/** + * anatop - MFD data + * @ioreg: ioremap register + * @reglock: spinlock for register read/write + */ +struct anatop { + void *ioreg; + spinlock_t reglock; +}; + +extern u32 anatop_get_bits(struct anatop *, u32, int, int); +extern void anatop_set_bits(struct anatop *, u32, int, int, u32); + +#endif /* __LINUX_MFD_ANATOP_H */