mfd: act8945a: Add Active-semi ACT8945A PMIC MFD driver (b25c6b7d) · Commits · 戴 / test

drivers/mfd/Kconfig

+11 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/mfd/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/mfd/act8945a.c

0 → 100644

+102 −0

Original line number	Diff line number	Diff line
		/*
		* MFD driver for Active-semi ACT8945a PMIC
		*
		* Copyright (C) 2015 Atmel Corporation.
		*
		* Author: Wenyou Yang <wenyou.yang@atmel.com>
		*
		* 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 <linux/i2c.h>
		#include <linux/mfd/core.h>
		#include <linux/module.h>
		#include <linux/of_device.h>
		#include <linux/regmap.h>

		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 <wenyou.yang@atmel.com>");
		MODULE_LICENSE("GPL");

Admin message