diff options
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mfd/act8945a.c | 102 |
3 files changed, 114 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3719cc86be0b..aa21dc55eb15 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 d2ddcf45ccd1..5eaa6465d0a6 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 000000000000..525b546ba42f --- /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 <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"); |