From patchwork Wed Jan 20 06:40:34 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wenyou Yang X-Patchwork-Id: 8069031 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 094E5BEEE5 for ; Wed, 20 Jan 2016 06:47:25 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E7FDA2046F for ; Wed, 20 Jan 2016 06:47:23 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B723820461 for ; Wed, 20 Jan 2016 06:47:22 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aLmWR-0003Q5-JV; Wed, 20 Jan 2016 06:45:39 +0000 Received: from eusmtp01.atmel.com ([212.144.249.243]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aLmWJ-0001hN-A3 for linux-arm-kernel@lists.infradead.org; Wed, 20 Jan 2016 06:45:35 +0000 Received: from apsmtp01.atmel.com (10.168.254.31) by eusmtp01.atmel.com (10.161.101.31) with Microsoft SMTP Server id 14.3.235.1; Wed, 20 Jan 2016 07:45:14 +0100 Received: from shaarm01.corp.atmel.com (10.168.254.13) by apsmtp01.atmel.com (10.168.254.31) with Microsoft SMTP Server id 14.3.235.1; Wed, 20 Jan 2016 14:45:18 +0800 From: Wenyou Yang To: Lee Jones , Rob Herring , "Pawel Moll" , Mark Rutland , Ian Campbell , Kumar Gala Subject: [PATCH v6 1/2] mfd: act8945a: add Active-semi ACT8945A PMIC MFD driver Date: Wed, 20 Jan 2016 14:40:34 +0800 Message-ID: <1453272035-22233-2-git-send-email-wenyou.yang@atmel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1453272035-22233-1-git-send-email-wenyou.yang@atmel.com> References: <1453272035-22233-1-git-send-email-wenyou.yang@atmel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160119_224531_813969_9F4AFF65 X-CRM114-Status: GOOD ( 20.47 ) X-Spam-Score: -4.2 (----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Krzysztof Kozlowski , Nicolas Ferre , linux-kernel@vger.kernel.org, Wenyou Yang , Peter Korsgaard , Javier Martinez Canillas , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support for the Active-semi ACT8945A PMIC. It is a Multi Function Device with the following subdevices: - Regulator - Charger It is interfaced to the host controller using I2C interface, ACT8945A is a child device of the I2C. Signed-off-by: Wenyou Yang Reviewed-by: Krzysztof Kozlowski --- Changes in v6: - change MFD_ACT8945A type from bool to tristate. - revert depends on to 'I2C'. Changes in v5: - change depends on to 'I2C=y'. Changes in v4: - add a space before .compatible. - collect Reviewed-by from Krzysztof Kozlowski. Changes in v3: None Changes in v2: - add more help information in Kconfig. - update the file header with short version license and author line. - remove unused structure members (dev, i2c_client) of stuct act8945a_dev. - use define "PLATFORM_DEVID_NONE" for mfd_add_devices(), instead of '-1'. - use more explicit info to indicate the failure to add sub devices. - remove the unnecessary print out. - substitute MODULE_LICENSE("GPL") for MODULE_LICENSE("GPL v2"). drivers/mfd/Kconfig | 11 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/act8945a.c | 109 ++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/act8945a.h | 21 ++++++++ 4 files changed, 142 insertions(+) create mode 100644 drivers/mfd/act8945a.c create mode 100644 include/linux/mfd/act8945a.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 9ca66de..5038e78 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -18,6 +18,17 @@ config MFD_CS5535 This is the core driver for CS5535/CS5536 MFD functions. This is necessary for using the board's GPIO and MFGPT functionality. +config MFD_ACT8945A + tristate "Active-semi ACT8945A" + select MFD_CORE + select REGMAP_I2C + depends on I2C && OF + help + Support for the ACT8945A PMIC from Active-semi. This device + features three step-down DC/DC converters and four low-dropout + linear regulators, along with a complete ActivePath battery + charger. + config MFD_AS3711 bool "AMS AS3711" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 0f230a6..2f1ca82 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_MFD_88PM860X) += 88pm860x.o obj-$(CONFIG_MFD_88PM800) += 88pm800.o 88pm80x.o obj-$(CONFIG_MFD_88PM805) += 88pm805.o 88pm80x.o +obj-$(CONFIG_MFD_ACT8945A) += act8945a.o obj-$(CONFIG_MFD_SM501) += sm501.o obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o obj-$(CONFIG_MFD_BCM590XX) += bcm590xx.o diff --git a/drivers/mfd/act8945a.c b/drivers/mfd/act8945a.c new file mode 100644 index 0000000..f5745b1 --- /dev/null +++ b/drivers/mfd/act8945a.c @@ -0,0 +1,109 @@ +/* + * MFD driver for Active-semi ACT8945a PMIC + * + * Copyright (C) 2015 Atmel Corporation. + * + * Author: Wenyou Yang + * + * 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. + */ + +#include +#include +#include +#include +#include +#include + +static const struct mfd_cell act8945a_devs[] = { + { + .name = "act8945a-pmic", + .of_compatible = "active-semi,act8945a-regulator", + }, + { + .name = "act8945a-charger", + .of_compatible = "active-semi,act8945a-charger", + }, +}; + +static const struct regmap_config act8945a_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int act8945a_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct act8945a_dev *act8945a; + int ret; + + act8945a = devm_kzalloc(&i2c->dev, sizeof(*act8945a), GFP_KERNEL); + if (!act8945a) + return -ENOMEM; + + i2c_set_clientdata(i2c, act8945a); + + act8945a->regmap = devm_regmap_init_i2c(i2c, &act8945a_regmap_config); + if (IS_ERR(act8945a->regmap)) { + ret = PTR_ERR(act8945a->regmap); + dev_err(&i2c->dev, "regmap init failed: %d\n", ret); + return ret; + } + + ret = mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE, act8945a_devs, + ARRAY_SIZE(act8945a_devs), NULL, 0, NULL); + if (ret) { + dev_err(&i2c->dev, "Failed to add sub devices\n"); + return ret; + } + + return 0; +} + +static int act8945a_i2c_remove(struct i2c_client *i2c) +{ + mfd_remove_devices(&i2c->dev); + + return 0; +} + +static const struct i2c_device_id act8945a_i2c_id[] = { + { "act8945a", 0 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id); + +static const struct of_device_id act8945a_of_match[] = { + { .compatible = "active-semi,act8945a", }, + {}, +}; +MODULE_DEVICE_TABLE(of, act8945a_of_match); + +static struct i2c_driver act8945a_i2c_driver = { + .driver = { + .name = "act8945a", + .of_match_table = of_match_ptr(act8945a_of_match), + }, + .probe = act8945a_i2c_probe, + .remove = act8945a_i2c_remove, + .id_table = act8945a_i2c_id, +}; + +static int __init act8945a_i2c_init(void) +{ + return i2c_add_driver(&act8945a_i2c_driver); +} +subsys_initcall(act8945a_i2c_init); + +static void __exit act8945a_i2c_exit(void) +{ + i2c_del_driver(&act8945a_i2c_driver); +} +module_exit(act8945a_i2c_exit); + +MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver"); +MODULE_AUTHOR("Wenyou Yang "); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/act8945a.h b/include/linux/mfd/act8945a.h new file mode 100644 index 0000000..5f67009 --- /dev/null +++ b/include/linux/mfd/act8945a.h @@ -0,0 +1,21 @@ +/* + * MFD driver for Active-semi ACT8945a PMIC + * + * Copyright (C) 2015 Atmel Corporation. + * + * Author: Wenyou Yang + * + * 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. + */ + +#ifndef _LINUX_MFD_ACT8945A_H +#define _LINUX_MFD_ACT8945A_H + +struct act8945a_dev { + struct regmap *regmap; +}; + +#endif