[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / mfd / tps65910.c

/*
 * tps65910.c  --  TI TPS6591x
 *
 * Copyright 2010 Texas Instruments Inc.
 *
 * Author: Graeme Gregory <gg@slimlogic.co.uk>
 * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
 *
 *  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/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/mfd/core.h>
#include <linux/regmap.h>
#include <linux/mfd/tps65910.h>

static struct mfd_cell tps65910s[] = {
	{
		.name = "tps65910-pmic",
	},
	{
		.name = "tps65910-rtc",
	},
	{
		.name = "tps65910-power",
	},
};


static bool is_volatile_reg(struct device *dev, unsigned int reg)
{
	struct tps65910 *tps65910 = dev_get_drvdata(dev);

	/*
	 * Caching all regulator registers.
	 * All regualator register address range is same for
	 * TPS65910 and TPS65911
	 */
	if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
		/* Check for non-existing register */
		if (tps65910_chip_id(tps65910) == TPS65910)
			if ((reg == TPS65911_VDDCTRL_OP) ||
				(reg == TPS65911_VDDCTRL_SR))
				return true;
		return false;
	}
	return true;
}

static const struct regmap_config tps65910_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.volatile_reg = is_volatile_reg,
	.max_register = TPS65910_MAX_REGISTER,
	.num_reg_defaults_raw = TPS65910_MAX_REGISTER,
	.cache_type = REGCACHE_RBTREE,
};

static int __devinit tps65910_sleepinit(struct tps65910 *tps65910,
		struct tps65910_board *pmic_pdata)
{
	struct device *dev = NULL;
	int ret = 0;

	dev = tps65910->dev;

	if (!pmic_pdata->en_dev_slp)
		return 0;

	/* enabling SLEEP device state */
	ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
				DEVCTRL_DEV_SLP_MASK);
	if (ret < 0) {
		dev_err(dev, "set dev_slp failed: %d\n", ret);
		goto err_sleep_init;
	}

	/* Return if there is no sleep keepon data. */
	if (!pmic_pdata->slp_keepon)
		return 0;

	if (pmic_pdata->slp_keepon->therm_keepon) {
		ret = tps65910_reg_set_bits(tps65910,
				TPS65910_SLEEP_KEEP_RES_ON,
				SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
		if (ret < 0) {
			dev_err(dev, "set therm_keepon failed: %d\n", ret);
			goto disable_dev_slp;
		}
	}

	if (pmic_pdata->slp_keepon->clkout32k_keepon) {
		ret = tps65910_reg_set_bits(tps65910,
				TPS65910_SLEEP_KEEP_RES_ON,
				SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
		if (ret < 0) {
			dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
			goto disable_dev_slp;
		}
	}

	if (pmic_pdata->slp_keepon->i2chs_keepon) {
		ret = tps65910_reg_set_bits(tps65910,
				TPS65910_SLEEP_KEEP_RES_ON,
				SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
		if (ret < 0) {
			dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
			goto disable_dev_slp;
		}
	}

	return 0;

disable_dev_slp:
	tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
				DEVCTRL_DEV_SLP_MASK);

err_sleep_init:
	return ret;
}


static __devinit int tps65910_i2c_probe(struct i2c_client *i2c,
					const struct i2c_device_id *id)
{
	struct tps65910 *tps65910;
	struct tps65910_board *pmic_plat_data;
	struct tps65910_platform_data *init_data;
	int ret = 0;

	pmic_plat_data = dev_get_platdata(&i2c->dev);
	if (!pmic_plat_data)
		return -EINVAL;

	init_data = kzalloc(sizeof(struct tps65910_platform_data), GFP_KERNEL);
	if (init_data == NULL)
		return -ENOMEM;

	tps65910 = kzalloc(sizeof(struct tps65910), GFP_KERNEL);
	if (tps65910 == NULL) {
		kfree(init_data);
		return -ENOMEM;
	}

	i2c_set_clientdata(i2c, tps65910);
	tps65910->dev = &i2c->dev;
	tps65910->i2c_client = i2c;
	tps65910->id = id->driver_data;
	mutex_init(&tps65910->io_mutex);

	tps65910->regmap = regmap_init_i2c(i2c, &tps65910_regmap_config);
	if (IS_ERR(tps65910->regmap)) {
		ret = PTR_ERR(tps65910->regmap);
		dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
		goto regmap_err;
	}

	ret = mfd_add_devices(tps65910->dev, -1,
			      tps65910s, ARRAY_SIZE(tps65910s),
			      NULL, 0);
	if (ret < 0)
		goto err;

	init_data->irq = pmic_plat_data->irq;
	init_data->irq_base = pmic_plat_data->irq_base;

	tps65910_gpio_init(tps65910, pmic_plat_data->gpio_base);

	tps65910_irq_init(tps65910, init_data->irq, init_data);

	tps65910_sleepinit(tps65910, pmic_plat_data);

	kfree(init_data);
	return ret;

err:
	regmap_exit(tps65910->regmap);
regmap_err:
	kfree(tps65910);
	kfree(init_data);
	return ret;
}

static __devexit int tps65910_i2c_remove(struct i2c_client *i2c)
{
	struct tps65910 *tps65910 = i2c_get_clientdata(i2c);

	tps65910_irq_exit(tps65910);
	mfd_remove_devices(tps65910->dev);
	regmap_exit(tps65910->regmap);
	kfree(tps65910);

	return 0;
}

static const struct i2c_device_id tps65910_i2c_id[] = {
       { "tps65910", TPS65910 },
       { "tps65911", TPS65911 },
       { }
};
MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id);


static struct i2c_driver tps65910_i2c_driver = {
	.driver = {
		   .name = "tps65910",
		   .owner = THIS_MODULE,
	},
	.probe = tps65910_i2c_probe,
	.remove = __devexit_p(tps65910_i2c_remove),
	.id_table = tps65910_i2c_id,
};

static int __init tps65910_i2c_init(void)
{
	return i2c_add_driver(&tps65910_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(tps65910_i2c_init);

static void __exit tps65910_i2c_exit(void)
{
	i2c_del_driver(&tps65910_i2c_driver);
}
module_exit(tps65910_i2c_exit);

MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>");
MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
27c6750e GG	1	/*
	2	* tps65910.c -- TI TPS6591x
	3	*
	4	* Copyright 2010 Texas Instruments Inc.
	5	*
	6	* Author: Graeme Gregory <gg@slimlogic.co.uk>
	7	* Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the
	11	* Free Software Foundation; either version 2 of the License, or (at your
	12	* option) any later version.
	13	*
	14	*/
	15
	16	#include <linux/module.h>
	17	#include <linux/moduleparam.h>
	18	#include <linux/init.h>
dc9913a0	19	#include <linux/err.h>
27c6750e GG	20	#include <linux/slab.h>
	21	#include <linux/i2c.h>
	22	#include <linux/gpio.h>
	23	#include <linux/mfd/core.h>
dc9913a0	24	#include <linux/regmap.h>
27c6750e GG	25	#include <linux/mfd/tps65910.h>
	26
	27	static struct mfd_cell tps65910s[] = {
	28	{
	29	.name = "tps65910-pmic",
	30	},
	31	{
	32	.name = "tps65910-rtc",
	33	},
	34	{
	35	.name = "tps65910-power",
	36	},
	37	};
	38
	39
dc9913a0 LD	40	static bool is_volatile_reg(struct device *dev, unsigned int reg)
	41	{
	42	struct tps65910 *tps65910 = dev_get_drvdata(dev);
	43
	44	/*
	45	* Caching all regulator registers.
	46	* All regualator register address range is same for
	47	* TPS65910 and TPS65911
	48	*/
	49	if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
	50	/* Check for non-existing register */
	51	if (tps65910_chip_id(tps65910) == TPS65910)
	52	if ((reg == TPS65911_VDDCTRL_OP) \|\|
	53	(reg == TPS65911_VDDCTRL_SR))
	54	return true;
	55	return false;
	56	}
	57	return true;
	58	}
	59
39ecb037	60	static const struct regmap_config tps65910_regmap_config = {
dc9913a0 LD	61	.reg_bits = 8,
	62	.val_bits = 8,
	63	.volatile_reg = is_volatile_reg,
	64	.max_register = TPS65910_MAX_REGISTER,
	65	.num_reg_defaults_raw = TPS65910_MAX_REGISTER,
	66	.cache_type = REGCACHE_RBTREE,
	67	};
	68
63745d40	69	static int __devinit tps65910_sleepinit(struct tps65910 *tps65910,
201cf052 LD	70	struct tps65910_board *pmic_pdata)
	71	{
	72	struct device *dev = NULL;
	73	int ret = 0;
	74
	75	dev = tps65910->dev;
	76
	77	if (!pmic_pdata->en_dev_slp)
	78	return 0;
	79
	80	/* enabling SLEEP device state */
3f7e8275	81	ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
201cf052 LD	82	DEVCTRL_DEV_SLP_MASK);
	83	if (ret < 0) {
	84	dev_err(dev, "set dev_slp failed: %d\n", ret);
	85	goto err_sleep_init;
	86	}
	87
	88	/* Return if there is no sleep keepon data. */
	89	if (!pmic_pdata->slp_keepon)
	90	return 0;
	91
	92	if (pmic_pdata->slp_keepon->therm_keepon) {
3f7e8275 RK	93	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	94	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	95	SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
	96	if (ret < 0) {
	97	dev_err(dev, "set therm_keepon failed: %d\n", ret);
	98	goto disable_dev_slp;
	99	}
	100	}
	101
	102	if (pmic_pdata->slp_keepon->clkout32k_keepon) {
3f7e8275 RK	103	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	104	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	105	SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
	106	if (ret < 0) {
	107	dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
	108	goto disable_dev_slp;
	109	}
	110	}
	111
	112	if (pmic_pdata->slp_keepon->i2chs_keepon) {
3f7e8275 RK	113	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	114	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	115	SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
	116	if (ret < 0) {
	117	dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
	118	goto disable_dev_slp;
	119	}
	120	}
	121
	122	return 0;
	123
	124	disable_dev_slp:
3f7e8275 RK	125	tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
3f7e8275 RK	126	DEVCTRL_DEV_SLP_MASK);
201cf052 LD	127
	128	err_sleep_init:
	129	return ret;
	130	}
	131
	132
63745d40 MB	133	static __devinit int tps65910_i2c_probe(struct i2c_client *i2c,
63745d40 MB	134	const struct i2c_device_id *id)
27c6750e GG	135	{
27c6750e GG	136	struct tps65910 *tps65910;
2537df72	137	struct tps65910_board *pmic_plat_data;
e3471bdc	138	struct tps65910_platform_data *init_data;
27c6750e GG	139	int ret = 0;
27c6750e GG	140
2537df72 GG	141	pmic_plat_data = dev_get_platdata(&i2c->dev);
	142	if (!pmic_plat_data)
	143	return -EINVAL;
	144
e3471bdc GG	145	init_data = kzalloc(sizeof(struct tps65910_platform_data), GFP_KERNEL);
	146	if (init_data == NULL)
	147	return -ENOMEM;
	148
27c6750e	149	tps65910 = kzalloc(sizeof(struct tps65910), GFP_KERNEL);
dc7e412d JJ	150	if (tps65910 == NULL) {
dc7e412d JJ	151	kfree(init_data);
27c6750e	152	return -ENOMEM;
dc7e412d	153	}
27c6750e GG	154
	155	i2c_set_clientdata(i2c, tps65910);
	156	tps65910->dev = &i2c->dev;
	157	tps65910->i2c_client = i2c;
79557056	158	tps65910->id = id->driver_data;
27c6750e GG	159	mutex_init(&tps65910->io_mutex);
27c6750e GG	160
39ecb037	161	tps65910->regmap = regmap_init_i2c(i2c, &tps65910_regmap_config);
dc9913a0 LD	162	if (IS_ERR(tps65910->regmap)) {
	163	ret = PTR_ERR(tps65910->regmap);
	164	dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
	165	goto regmap_err;
	166	}
	167
27c6750e GG	168	ret = mfd_add_devices(tps65910->dev, -1,
	169	tps65910s, ARRAY_SIZE(tps65910s),
	170	NULL, 0);
	171	if (ret < 0)
	172	goto err;
	173
b1224cd1	174	init_data->irq = pmic_plat_data->irq;
1773140f	175	init_data->irq_base = pmic_plat_data->irq_base;
b1224cd1	176
2537df72 GG	177	tps65910_gpio_init(tps65910, pmic_plat_data->gpio_base);
2537df72 GG	178
1e351a95	179	tps65910_irq_init(tps65910, init_data->irq, init_data);
e3471bdc	180
201cf052 LD	181	tps65910_sleepinit(tps65910, pmic_plat_data);
201cf052 LD	182
dc7e412d	183	kfree(init_data);
27c6750e GG	184	return ret;
	185
	186	err:
dc9913a0 LD	187	regmap_exit(tps65910->regmap);
dc9913a0 LD	188	regmap_err:
27c6750e	189	kfree(tps65910);
dc7e412d	190	kfree(init_data);
27c6750e GG	191	return ret;
	192	}
	193
63745d40	194	static __devexit int tps65910_i2c_remove(struct i2c_client *i2c)
27c6750e GG	195	{
	196	struct tps65910 *tps65910 = i2c_get_clientdata(i2c);
	197
ec2328c3	198	tps65910_irq_exit(tps65910);
1e351a95	199	mfd_remove_devices(tps65910->dev);
dc9913a0	200	regmap_exit(tps65910->regmap);
27c6750e GG	201	kfree(tps65910);
	202
	203	return 0;
	204	}
	205
	206	static const struct i2c_device_id tps65910_i2c_id[] = {
79557056 JEC	207	{ "tps65910", TPS65910 },
79557056 JEC	208	{ "tps65911", TPS65911 },
27c6750e GG	209	{ }
	210	};
	211	MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id);
	212
	213
	214	static struct i2c_driver tps65910_i2c_driver = {
	215	.driver = {
	216	.name = "tps65910",
	217	.owner = THIS_MODULE,
	218	},
	219	.probe = tps65910_i2c_probe,
63745d40	220	.remove = __devexit_p(tps65910_i2c_remove),
27c6750e GG	221	.id_table = tps65910_i2c_id,
	222	};
	223
	224	static int __init tps65910_i2c_init(void)
	225	{
	226	return i2c_add_driver(&tps65910_i2c_driver);
	227	}
	228	/* init early so consumer devices can complete system boot */
	229	subsys_initcall(tps65910_i2c_init);
	230
	231	static void __exit tps65910_i2c_exit(void)
	232	{
	233	i2c_del_driver(&tps65910_i2c_driver);
	234	}
	235	module_exit(tps65910_i2c_exit);
	236
	237	MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
	238	MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>");
	239	MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
	240	MODULE_LICENSE("GPL");