From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751891AbcBEDju (ORCPT ); Thu, 4 Feb 2016 22:39:50 -0500 Received: from nasmtp01.atmel.com ([192.199.1.245]:42963 "EHLO DVREDG01.corp.atmel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751736AbcBEDjs (ORCPT ); Thu, 4 Feb 2016 22:39:48 -0500 From: Wenyou Yang To: Lee Jones , Rob Herring , "Pawel Moll" , Mark Brown , Ian Campbell , Kumar Gala CC: Javier Martinez Canillas , Krzysztof Kozlowski , Peter Korsgaard , Nicolas Ferre , , , , Wenyou Yang Subject: [PATCH v10 1/2] mfd: act8945a: add Active-semi ACT8945A PMIC MFD driver Date: Fri, 5 Feb 2016 11:36:29 +0800 Message-ID: <1454643390-16910-2-git-send-email-wenyou.yang@atmel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1454643390-16910-1-git-send-email-wenyou.yang@atmel.com> References: <1454643390-16910-1-git-send-email-wenyou.yang@atmel.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Acked-by: Lee Jones Acked-by: Peter Korsgaard --- Changes in v10: - remove the mfd cell .of_compatible. Changes in v9: - remove unneeded struct act8945a_dev structure. - collect Acked from Lee. - collect Acked from Peter. Changes in v8: - change the subdevice's name "act8945a-pmic" to "act8945a-regulator". Changes in v7: - remove struct act8945a_dev to .c file. - remove unused .h file. 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 | 102 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 114 insertions(+) create mode 100644 drivers/mfd/act8945a.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 6c4ebd9..38994bb 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..525b546 --- /dev/null +++ b/drivers/mfd/act8945a.c @@ -0,0 +1,102 @@ +/* + * 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 + +static const struct mfd_cell act8945a_devs[] = { + { + .name = "act8945a-regulator", + }, + { + .name = "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) +{ + int ret; + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(i2c, &act8945a_regmap_config); + if (IS_ERR(regmap)) { + ret = PTR_ERR(regmap); + dev_err(&i2c->dev, "regmap init failed: %d\n", ret); + return ret; + } + + i2c_set_clientdata(i2c, regmap); + + 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"); -- 1.7.9.5