diff options
| -rw-r--r-- | drivers/mfd/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mfd/bcm590xx.c | 93 | ||||
| -rw-r--r-- | include/linux/mfd/bcm590xx.h | 31 |
4 files changed, 133 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index d22ca0fc873f..7587c9e1a519 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -59,6 +59,14 @@ config MFD_AAT2870_CORE additional drivers must be enabled in order to use the functionality of the device. +config MFD_BCM590XX + tristate "Broadcom BCM590xx PMUs" + select MFD_CORE + select REGMAP_I2C + depends on I2C + help + Support for the BCM590xx PMUs from Broadcom + config MFD_CROS_EC tristate "ChromeOS Embedded Controller" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 89a7951503ca..23835dfa615c 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_MFD_88PM800) += 88pm800.o 88pm80x.o obj-$(CONFIG_MFD_88PM805) += 88pm805.o 88pm80x.o obj-$(CONFIG_MFD_SM501) += sm501.o obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o +obj-$(CONFIG_MFD_BCM590XX) += bcm590xx.o obj-$(CONFIG_MFD_CROS_EC) += cros_ec.o obj-$(CONFIG_MFD_CROS_EC_I2C) += cros_ec_i2c.o obj-$(CONFIG_MFD_CROS_EC_SPI) += cros_ec_spi.o diff --git a/drivers/mfd/bcm590xx.c b/drivers/mfd/bcm590xx.c new file mode 100644 index 000000000000..926a57e4d533 --- /dev/null +++ b/drivers/mfd/bcm590xx.c @@ -0,0 +1,93 @@ +/* + * Broadcom BCM590xx PMU + * + * Copyright 2014 Linaro Limited + * Author: Matt Porter <mporter@linaro.org> + * + * 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/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/mfd/bcm590xx.h> +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +static const struct mfd_cell bcm590xx_devs[] = { + { + .name = "bcm590xx-vregs", + }, +}; + +static const struct regmap_config bcm590xx_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = BCM590XX_MAX_REGISTER, + .cache_type = REGCACHE_RBTREE, +}; + +static int bcm590xx_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct bcm590xx *bcm590xx; + int ret; + + bcm590xx = devm_kzalloc(&i2c->dev, sizeof(*bcm590xx), GFP_KERNEL); + if (!bcm590xx) + return -ENOMEM; + + i2c_set_clientdata(i2c, bcm590xx); + bcm590xx->dev = &i2c->dev; + bcm590xx->i2c_client = i2c; + + bcm590xx->regmap = devm_regmap_init_i2c(i2c, &bcm590xx_regmap_config); + if (IS_ERR(bcm590xx->regmap)) { + ret = PTR_ERR(bcm590xx->regmap); + dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret); + return ret; + } + + ret = mfd_add_devices(&i2c->dev, -1, bcm590xx_devs, + ARRAY_SIZE(bcm590xx_devs), NULL, 0, NULL); + if (ret < 0) + dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret); + + return ret; +} + +static const struct of_device_id bcm590xx_of_match[] = { + { .compatible = "brcm,bcm59056" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bcm590xx_of_match); + +static const struct i2c_device_id bcm590xx_i2c_id[] = { + { "bcm59056" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bcm590xx_i2c_id); + +static struct i2c_driver bcm590xx_i2c_driver = { + .driver = { + .name = "bcm590xx", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(bcm590xx_of_match), + }, + .probe = bcm590xx_i2c_probe, + .id_table = bcm590xx_i2c_id, +}; +module_i2c_driver(bcm590xx_i2c_driver); + +MODULE_AUTHOR("Matt Porter <mporter@linaro.org>"); +MODULE_DESCRIPTION("BCM590xx multi-function driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:bcm590xx"); diff --git a/include/linux/mfd/bcm590xx.h b/include/linux/mfd/bcm590xx.h new file mode 100644 index 000000000000..434df2d4e587 --- /dev/null +++ b/include/linux/mfd/bcm590xx.h @@ -0,0 +1,31 @@ +/* + * Broadcom BCM590xx PMU + * + * Copyright 2014 Linaro Limited + * Author: Matt Porter <mporter@linaro.org> + * + * 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_BCM590XX_H +#define __LINUX_MFD_BCM590XX_H + +#include <linux/device.h> +#include <linux/i2c.h> +#include <linux/regmap.h> + +/* max register address */ +#define BCM590XX_MAX_REGISTER 0xe7 + +struct bcm590xx { + struct device *dev; + struct i2c_client *i2c_client; + struct regmap *regmap; + unsigned int id; +}; + +#endif /* __LINUX_MFD_BCM590XX_H */ |