[mirror_ubuntu-focal-kernel.git] / drivers / mfd / sec-core.c

/*
 * sec-core.c
 *
 * Copyright (c) 2012 Samsung Electronics Co., Ltd
 *              http://www.samsung.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/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/samsung/core.h>
#include <linux/mfd/samsung/irq.h>
#include <linux/mfd/samsung/rtc.h>
#include <linux/mfd/samsung/s2mps11.h>
#include <linux/mfd/samsung/s5m8763.h>
#include <linux/mfd/samsung/s5m8767.h>
#include <linux/regmap.h>

static const struct mfd_cell s5m8751_devs[] = {
	{
		.name = "s5m8751-pmic",
	}, {
		.name = "s5m-charger",
	}, {
		.name = "s5m8751-codec",
	},
};

static const struct mfd_cell s5m8763_devs[] = {
	{
		.name = "s5m8763-pmic",
	}, {
		.name = "s5m-rtc",
	}, {
		.name = "s5m-charger",
	},
};

static const struct mfd_cell s5m8767_devs[] = {
	{
		.name = "s5m8767-pmic",
	}, {
		.name = "s5m-rtc",
	},
};

static const struct mfd_cell s2mps11_devs[] = {
	{
		.name = "s2mps11-pmic",
	}, {
		.name = "s2mps11-clk",
	}
};

#ifdef CONFIG_OF
static struct of_device_id sec_dt_match[] = {
	{	.compatible = "samsung,s5m8767-pmic",
		.data = (void *)S5M8767X,
	},
	{	.compatible = "samsung,s2mps11-pmic",
		.data = (void *)S2MPS11X,
	},
	{},
};
#endif

int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest)
{
	return regmap_read(sec_pmic->regmap_pmic, reg, dest);
}
EXPORT_SYMBOL_GPL(sec_reg_read);

int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)
{
	return regmap_bulk_read(sec_pmic->regmap_pmic, reg, buf, count);
}
EXPORT_SYMBOL_GPL(sec_bulk_read);

int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value)
{
	return regmap_write(sec_pmic->regmap_pmic, reg, value);
}
EXPORT_SYMBOL_GPL(sec_reg_write);

int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)
{
	return regmap_raw_write(sec_pmic->regmap_pmic, reg, buf, count);
}
EXPORT_SYMBOL_GPL(sec_bulk_write);

int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask)
{
	return regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, val);
}
EXPORT_SYMBOL_GPL(sec_reg_update);

static bool s2mps11_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case S2MPS11_REG_INT1M:
	case S2MPS11_REG_INT2M:
	case S2MPS11_REG_INT3M:
		return false;
	default:
		return true;
	}
}

static bool s5m8763_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case S5M8763_REG_IRQM1:
	case S5M8763_REG_IRQM2:
	case S5M8763_REG_IRQM3:
	case S5M8763_REG_IRQM4:
		return false;
	default:
		return true;
	}
}

static const struct regmap_config sec_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
};

static const struct regmap_config s2mps11_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S2MPS11_REG_L38CTRL,
	.volatile_reg = s2mps11_volatile,
	.cache_type = REGCACHE_FLAT,
};

static const struct regmap_config s5m8763_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S5M8763_REG_LBCNFG2,
	.volatile_reg = s5m8763_volatile,
	.cache_type = REGCACHE_FLAT,
};

static const struct regmap_config s5m8767_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S5M8767_REG_LDO28CTRL,
	.volatile_reg = s2mps11_volatile,
	.cache_type = REGCACHE_FLAT,
};

static const struct regmap_config sec_rtc_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
};

#ifdef CONFIG_OF
/*
 * Only the common platform data elements for s5m8767 are parsed here from the
 * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
 * others have to parse their own platform data elements from device tree.
 *
 * The s5m8767 platform data structure is instantiated here and the drivers for
 * the sub-modules need not instantiate another instance while parsing their
 * platform data.
 */
static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
					struct device *dev)
{
	struct sec_platform_data *pd;

	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
	if (!pd) {
		dev_err(dev, "could not allocate memory for pdata\n");
		return ERR_PTR(-ENOMEM);
	}

	/*
	 * ToDo: the 'wakeup' member in the platform data is more of a linux
	 * specfic information. Hence, there is no binding for that yet and
	 * not parsed here.
	 */

	return pd;
}
#else
static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
					struct device *dev)
{
	return NULL;
}
#endif

static inline int sec_i2c_get_driver_data(struct i2c_client *i2c,
						const struct i2c_device_id *id)
{
#ifdef CONFIG_OF
	if (i2c->dev.of_node) {
		const struct of_device_id *match;
		match = of_match_node(sec_dt_match, i2c->dev.of_node);
		return (int)match->data;
	}
#endif
	return (int)id->driver_data;
}

static int sec_pmic_probe(struct i2c_client *i2c,
			    const struct i2c_device_id *id)
{
	struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
	const struct regmap_config *regmap;
	struct sec_pmic_dev *sec_pmic;
	int ret;

	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
				GFP_KERNEL);
	if (sec_pmic == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, sec_pmic);
	sec_pmic->dev = &i2c->dev;
	sec_pmic->i2c = i2c;
	sec_pmic->irq = i2c->irq;
	sec_pmic->type = sec_i2c_get_driver_data(i2c, id);

	if (sec_pmic->dev->of_node) {
		pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
		if (IS_ERR(pdata)) {
			ret = PTR_ERR(pdata);
			return ret;
		}
		pdata->device_type = sec_pmic->type;
	}
	if (pdata) {
		sec_pmic->device_type = pdata->device_type;
		sec_pmic->ono = pdata->ono;
		sec_pmic->irq_base = pdata->irq_base;
		sec_pmic->wakeup = pdata->wakeup;
		sec_pmic->pdata = pdata;
	}

	switch (sec_pmic->device_type) {
	case S2MPS11X:
		regmap = &s2mps11_regmap_config;
		break;
	case S5M8763X:
		regmap = &s5m8763_regmap_config;
		break;
	case S5M8767X:
		regmap = &s5m8767_regmap_config;
		break;
	default:
		regmap = &sec_regmap_config;
		break;
	}

	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	if (IS_ERR(sec_pmic->regmap_pmic)) {
		ret = PTR_ERR(sec_pmic->regmap_pmic);
		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
			ret);
		return ret;
	}

	sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
	i2c_set_clientdata(sec_pmic->rtc, sec_pmic);

	sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc,
			&sec_rtc_regmap_config);
	if (IS_ERR(sec_pmic->regmap_rtc)) {
		ret = PTR_ERR(sec_pmic->regmap_rtc);
		dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n",
			ret);
		return ret;
	}

	if (pdata && pdata->cfg_pmic_irq)
		pdata->cfg_pmic_irq();

	sec_irq_init(sec_pmic);

	pm_runtime_set_active(sec_pmic->dev);

	switch (sec_pmic->device_type) {
	case S5M8751X:
		ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs,
				      ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL);
		break;
	case S5M8763X:
		ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs,
				      ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL);
		break;
	case S5M8767X:
		ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
				      ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL);
		break;
	case S2MPS11X:
		ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
				      ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL);
		break;
	default:
		/* If this happens the probe function is problem */
		BUG();
	}

	if (ret)
		goto err;

	device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);

	return ret;

err:
	sec_irq_exit(sec_pmic);
	i2c_unregister_device(sec_pmic->rtc);
	return ret;
}

static int sec_pmic_remove(struct i2c_client *i2c)
{
	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);

	mfd_remove_devices(sec_pmic->dev);
	sec_irq_exit(sec_pmic);
	i2c_unregister_device(sec_pmic->rtc);
	return 0;
}

static int sec_pmic_suspend(struct device *dev)
{
	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);

	if (device_may_wakeup(dev)) {
		enable_irq_wake(sec_pmic->irq);
		/*
		 * PMIC IRQ must be disabled during suspend for RTC alarm
		 * to work properly.
		 * When device is woken up from suspend by RTC Alarm, an
		 * interrupt occurs before resuming I2C bus controller.
		 * The interrupt is handled by regmap_irq_thread which tries
		 * to read RTC registers. This read fails (I2C is still
		 * suspended) and RTC Alarm interrupt is disabled.
		 */
		disable_irq(sec_pmic->irq);
	}

	return 0;
}

static int sec_pmic_resume(struct device *dev)
{
	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);

	if (device_may_wakeup(dev)) {
		disable_irq_wake(sec_pmic->irq);
		enable_irq(sec_pmic->irq);
	}

	return 0;
}

static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);

static const struct i2c_device_id sec_pmic_id[] = {
	{ "sec_pmic", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, sec_pmic_id);

static struct i2c_driver sec_pmic_driver = {
	.driver = {
		   .name = "sec_pmic",
		   .owner = THIS_MODULE,
		   .pm = &sec_pmic_pm_ops,
		   .of_match_table = of_match_ptr(sec_dt_match),
	},
	.probe = sec_pmic_probe,
	.remove = sec_pmic_remove,
	.id_table = sec_pmic_id,
};

static int __init sec_pmic_init(void)
{
	return i2c_add_driver(&sec_pmic_driver);
}

subsys_initcall(sec_pmic_init);

static void __exit sec_pmic_exit(void)
{
	i2c_del_driver(&sec_pmic_driver);
}
module_exit(sec_pmic_exit);

MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
MODULE_DESCRIPTION("Core support for the S5M MFD");
MODULE_LICENSE("GPL");
Commit	Line	Data
0f5f7078	1	/*
63063bfb	2	* sec-core.c
0f5f7078	3	*
63063bfb	4	* Copyright (c) 2012 Samsung Electronics Co., Ltd
0f5f7078 SK	5	* http://www.samsung.com
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/moduleparam.h>
	16	#include <linux/init.h>
	17	#include <linux/err.h>
	18	#include <linux/slab.h>
	19	#include <linux/i2c.h>
1c5a099b	20	#include <linux/of.h>
26aec009	21	#include <linux/of_irq.h>
0f5f7078 SK	22	#include <linux/interrupt.h>
	23	#include <linux/pm_runtime.h>
	24	#include <linux/mutex.h>
	25	#include <linux/mfd/core.h>
54227bcf SK	26	#include <linux/mfd/samsung/core.h>
	27	#include <linux/mfd/samsung/irq.h>
	28	#include <linux/mfd/samsung/rtc.h>
25f311fa MB	29	#include <linux/mfd/samsung/s2mps11.h>
	30	#include <linux/mfd/samsung/s5m8763.h>
	31	#include <linux/mfd/samsung/s5m8767.h>
0f5f7078 SK	32	#include <linux/regmap.h>
0f5f7078 SK	33
5ac98553	34	static const struct mfd_cell s5m8751_devs[] = {
88a1cfd6 SK	35	{
	36	.name = "s5m8751-pmic",
	37	}, {
	38	.name = "s5m-charger",
	39	}, {
	40	.name = "s5m8751-codec",
	41	},
	42	};
	43
5ac98553	44	static const struct mfd_cell s5m8763_devs[] = {
88a1cfd6 SK	45	{
	46	.name = "s5m8763-pmic",
	47	}, {
	48	.name = "s5m-rtc",
	49	}, {
	50	.name = "s5m-charger",
	51	},
	52	};
	53
5ac98553	54	static const struct mfd_cell s5m8767_devs[] = {
0f5f7078 SK	55	{
	56	.name = "s5m8767-pmic",
	57	}, {
	58	.name = "s5m-rtc",
	59	},
	60	};
	61
5ac98553	62	static const struct mfd_cell s2mps11_devs[] = {
9b6d1343 SK	63	{
9b6d1343 SK	64	.name = "s2mps11-pmic",
3134bcae YSB	65	}, {
	66	.name = "s2mps11-clk",
	67	}
9b6d1343 SK	68	};
9b6d1343 SK	69
26aec009 ADK	70	#ifdef CONFIG_OF
	71	static struct of_device_id sec_dt_match[] = {
	72	{ .compatible = "samsung,s5m8767-pmic",
	73	.data = (void *)S5M8767X,
	74	},
aa32acad YSB	75	{ .compatible = "samsung,s2mps11-pmic",
	76	.data = (void *)S2MPS11X,
	77	},
26aec009 ADK	78	{},
	79	};
	80	#endif
	81
63063bfb	82	int sec_reg_read(struct sec_pmic_dev sec_pmic, u8 reg, void dest)
0f5f7078	83	{
3e1e4a5f	84	return regmap_read(sec_pmic->regmap_pmic, reg, dest);
0f5f7078	85	}
63063bfb	86	EXPORT_SYMBOL_GPL(sec_reg_read);
0f5f7078	87
63063bfb	88	int sec_bulk_read(struct sec_pmic_dev sec_pmic, u8 reg, int count, u8 buf)
0f5f7078	89	{
3e1e4a5f	90	return regmap_bulk_read(sec_pmic->regmap_pmic, reg, buf, count);
0f5f7078	91	}
63063bfb	92	EXPORT_SYMBOL_GPL(sec_bulk_read);
0f5f7078	93
63063bfb	94	int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value)
0f5f7078	95	{
3e1e4a5f	96	return regmap_write(sec_pmic->regmap_pmic, reg, value);
0f5f7078	97	}
63063bfb	98	EXPORT_SYMBOL_GPL(sec_reg_write);
0f5f7078	99
63063bfb	100	int sec_bulk_write(struct sec_pmic_dev sec_pmic, u8 reg, int count, u8 buf)
0f5f7078	101	{
3e1e4a5f	102	return regmap_raw_write(sec_pmic->regmap_pmic, reg, buf, count);
0f5f7078	103	}
63063bfb	104	EXPORT_SYMBOL_GPL(sec_bulk_write);
0f5f7078	105
63063bfb	106	int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask)
0f5f7078	107	{
3e1e4a5f	108	return regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, val);
0f5f7078	109	}
63063bfb	110	EXPORT_SYMBOL_GPL(sec_reg_update);
0f5f7078	111
6b845ba9 MB	112	static bool s2mps11_volatile(struct device *dev, unsigned int reg)
	113	{
	114	switch (reg) {
	115	case S2MPS11_REG_INT1M:
	116	case S2MPS11_REG_INT2M:
	117	case S2MPS11_REG_INT3M:
	118	return false;
	119	default:
	120	return true;
	121	}
	122	}
	123
	124	static bool s5m8763_volatile(struct device *dev, unsigned int reg)
	125	{
	126	switch (reg) {
	127	case S5M8763_REG_IRQM1:
	128	case S5M8763_REG_IRQM2:
	129	case S5M8763_REG_IRQM3:
	130	case S5M8763_REG_IRQM4:
	131	return false;
	132	default:
	133	return true;
	134	}
	135	}
	136
a30fffb0	137	static const struct regmap_config sec_regmap_config = {
0f5f7078 SK	138	.reg_bits = 8,
	139	.val_bits = 8,
	140	};
	141
a30fffb0	142	static const struct regmap_config s2mps11_regmap_config = {
25f311fa MB	143	.reg_bits = 8,
	144	.val_bits = 8,
	145
	146	.max_register = S2MPS11_REG_L38CTRL,
6b845ba9 MB	147	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	148	.cache_type = REGCACHE_FLAT,
25f311fa MB	149	};
25f311fa MB	150
a30fffb0	151	static const struct regmap_config s5m8763_regmap_config = {
25f311fa MB	152	.reg_bits = 8,
	153	.val_bits = 8,
	154
	155	.max_register = S5M8763_REG_LBCNFG2,
6b845ba9 MB	156	.volatile_reg = s5m8763_volatile,
6b845ba9 MB	157	.cache_type = REGCACHE_FLAT,
25f311fa MB	158	};
25f311fa MB	159
a30fffb0	160	static const struct regmap_config s5m8767_regmap_config = {
25f311fa MB	161	.reg_bits = 8,
	162	.val_bits = 8,
	163
	164	.max_register = S5M8767_REG_LDO28CTRL,
6b845ba9 MB	165	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	166	.cache_type = REGCACHE_FLAT,
25f311fa	167	};
26aec009	168
3e1e4a5f KK	169	static const struct regmap_config sec_rtc_regmap_config = {
	170	.reg_bits = 8,
	171	.val_bits = 8,
	172	};
	173
26aec009 ADK	174	#ifdef CONFIG_OF
	175	/*
	176	* Only the common platform data elements for s5m8767 are parsed here from the
	177	* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
	178	* others have to parse their own platform data elements from device tree.
	179	*
	180	* The s5m8767 platform data structure is instantiated here and the drivers for
	181	* the sub-modules need not instantiate another instance while parsing their
	182	* platform data.
	183	*/
	184	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
	185	struct device *dev)
	186	{
	187	struct sec_platform_data *pd;
	188
	189	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
	190	if (!pd) {
	191	dev_err(dev, "could not allocate memory for pdata\n");
	192	return ERR_PTR(-ENOMEM);
	193	}
	194
	195	/*
	196	* ToDo: the 'wakeup' member in the platform data is more of a linux
	197	* specfic information. Hence, there is no binding for that yet and
	198	* not parsed here.
	199	*/
	200
	201	return pd;
	202	}
	203	#else
197bf856	204	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
26aec009 ADK	205	struct device *dev)
26aec009 ADK	206	{
005718c0	207	return NULL;
26aec009 ADK	208	}
	209	#endif
	210
	211	static inline int sec_i2c_get_driver_data(struct i2c_client *i2c,
	212	const struct i2c_device_id *id)
	213	{
	214	#ifdef CONFIG_OF
	215	if (i2c->dev.of_node) {
	216	const struct of_device_id *match;
	217	match = of_match_node(sec_dt_match, i2c->dev.of_node);
	218	return (int)match->data;
	219	}
	220	#endif
	221	return (int)id->driver_data;
	222	}
	223
63063bfb	224	static int sec_pmic_probe(struct i2c_client *i2c,
0f5f7078 SK	225	const struct i2c_device_id *id)
0f5f7078 SK	226	{
334a41ce	227	struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
25f311fa	228	const struct regmap_config *regmap;
63063bfb	229	struct sec_pmic_dev *sec_pmic;
61a2af30	230	int ret;
0f5f7078	231
63063bfb	232	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
621210e2	233	GFP_KERNEL);
63063bfb	234	if (sec_pmic == NULL)
0f5f7078 SK	235	return -ENOMEM;
0f5f7078 SK	236
63063bfb SK	237	i2c_set_clientdata(i2c, sec_pmic);
	238	sec_pmic->dev = &i2c->dev;
	239	sec_pmic->i2c = i2c;
	240	sec_pmic->irq = i2c->irq;
26aec009 ADK	241	sec_pmic->type = sec_i2c_get_driver_data(i2c, id);
	242
	243	if (sec_pmic->dev->of_node) {
	244	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	245	if (IS_ERR(pdata)) {
	246	ret = PTR_ERR(pdata);
	247	return ret;
	248	}
	249	pdata->device_type = sec_pmic->type;
	250	}
0f5f7078	251	if (pdata) {
63063bfb SK	252	sec_pmic->device_type = pdata->device_type;
	253	sec_pmic->ono = pdata->ono;
	254	sec_pmic->irq_base = pdata->irq_base;
	255	sec_pmic->wakeup = pdata->wakeup;
26aec009	256	sec_pmic->pdata = pdata;
0f5f7078 SK	257	}
0f5f7078 SK	258
25f311fa MB	259	switch (sec_pmic->device_type) {
	260	case S2MPS11X:
	261	regmap = &s2mps11_regmap_config;
	262	break;
	263	case S5M8763X:
	264	regmap = &s5m8763_regmap_config;
	265	break;
	266	case S5M8767X:
	267	regmap = &s5m8767_regmap_config;
	268	break;
	269	default:
	270	regmap = &sec_regmap_config;
	271	break;
	272	}
	273
3e1e4a5f KK	274	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	275	if (IS_ERR(sec_pmic->regmap_pmic)) {
	276	ret = PTR_ERR(sec_pmic->regmap_pmic);
0f5f7078	277	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
61a2af30	278	ret);
1092e1c7	279	return ret;
0f5f7078 SK	280	}
0f5f7078 SK	281
63063bfb SK	282	sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
63063bfb SK	283	i2c_set_clientdata(sec_pmic->rtc, sec_pmic);
0f5f7078	284
3e1e4a5f KK	285	sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc,
	286	&sec_rtc_regmap_config);
	287	if (IS_ERR(sec_pmic->regmap_rtc)) {
	288	ret = PTR_ERR(sec_pmic->regmap_rtc);
	289	dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n",
	290	ret);
	291	return ret;
	292	}
	293
c3ebb30a	294	if (pdata && pdata->cfg_pmic_irq)
0f5f7078 SK	295	pdata->cfg_pmic_irq();
0f5f7078 SK	296
63063bfb	297	sec_irq_init(sec_pmic);
0f5f7078	298
63063bfb	299	pm_runtime_set_active(sec_pmic->dev);
0f5f7078	300
63063bfb	301	switch (sec_pmic->device_type) {
88a1cfd6	302	case S5M8751X:
63063bfb	303	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs,
0848c94f	304	ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL);
88a1cfd6 SK	305	break;
88a1cfd6 SK	306	case S5M8763X:
63063bfb	307	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs,
0848c94f	308	ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL);
88a1cfd6 SK	309	break;
88a1cfd6 SK	310	case S5M8767X:
63063bfb	311	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
0848c94f	312	ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL);
88a1cfd6	313	break;
9b6d1343 SK	314	case S2MPS11X:
9b6d1343 SK	315	ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
0848c94f	316	ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL);
9b6d1343	317	break;
88a1cfd6 SK	318	default:
	319	/* If this happens the probe function is problem */
	320	BUG();
	321	}
0f5f7078	322
15447a46	323	if (ret)
0f5f7078 SK	324	goto err;
0f5f7078 SK	325
f6d6daaf KK	326	device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
f6d6daaf KK	327
0f5f7078 SK	328	return ret;
	329
	330	err:
63063bfb SK	331	sec_irq_exit(sec_pmic);
63063bfb SK	332	i2c_unregister_device(sec_pmic->rtc);
0f5f7078 SK	333	return ret;
	334	}
	335
63063bfb	336	static int sec_pmic_remove(struct i2c_client *i2c)
0f5f7078	337	{
63063bfb	338	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
0f5f7078	339
63063bfb SK	340	mfd_remove_devices(sec_pmic->dev);
	341	sec_irq_exit(sec_pmic);
	342	i2c_unregister_device(sec_pmic->rtc);
0f5f7078 SK	343	return 0;
	344	}
	345
f6d6daaf KK	346	static int sec_pmic_suspend(struct device *dev)
	347	{
	348	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	349	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	350
	351	if (device_may_wakeup(dev)) {
	352	enable_irq_wake(sec_pmic->irq);
	353	/*
	354	* PMIC IRQ must be disabled during suspend for RTC alarm
	355	* to work properly.
	356	* When device is woken up from suspend by RTC Alarm, an
	357	* interrupt occurs before resuming I2C bus controller.
	358	* The interrupt is handled by regmap_irq_thread which tries
	359	* to read RTC registers. This read fails (I2C is still
	360	* suspended) and RTC Alarm interrupt is disabled.
	361	*/
	362	disable_irq(sec_pmic->irq);
	363	}
	364
	365	return 0;
	366	}
	367
	368	static int sec_pmic_resume(struct device *dev)
	369	{
	370	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	371	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	372
	373	if (device_may_wakeup(dev)) {
	374	disable_irq_wake(sec_pmic->irq);
	375	enable_irq(sec_pmic->irq);
	376	}
	377
	378	return 0;
	379	}
	380
	381	static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
	382
63063bfb SK	383	static const struct i2c_device_id sec_pmic_id[] = {
63063bfb SK	384	{ "sec_pmic", 0 },
0f5f7078 SK	385	{ }
0f5f7078 SK	386	};
63063bfb	387	MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
0f5f7078	388
63063bfb	389	static struct i2c_driver sec_pmic_driver = {
0f5f7078	390	.driver = {
63063bfb	391	.name = "sec_pmic",
0f5f7078	392	.owner = THIS_MODULE,
f6d6daaf	393	.pm = &sec_pmic_pm_ops,
26aec009	394	.of_match_table = of_match_ptr(sec_dt_match),
0f5f7078	395	},
63063bfb SK	396	.probe = sec_pmic_probe,
	397	.remove = sec_pmic_remove,
	398	.id_table = sec_pmic_id,
0f5f7078 SK	399	};
0f5f7078 SK	400
63063bfb	401	static int __init sec_pmic_init(void)
0f5f7078	402	{
63063bfb	403	return i2c_add_driver(&sec_pmic_driver);
0f5f7078 SK	404	}
0f5f7078 SK	405
63063bfb	406	subsys_initcall(sec_pmic_init);
0f5f7078	407
63063bfb	408	static void __exit sec_pmic_exit(void)
0f5f7078	409	{
63063bfb	410	i2c_del_driver(&sec_pmic_driver);
0f5f7078	411	}
63063bfb	412	module_exit(sec_pmic_exit);
0f5f7078 SK	413
	414	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	415	MODULE_DESCRIPTION("Core support for the S5M MFD");
	416	MODULE_LICENSE("GPL");