[mirror_ubuntu-hirsute-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/s2mps14.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",
	}, {
		.name = "s5m8767-clk",
	}
};

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

static const struct mfd_cell s2mps14_devs[] = {
	{
		.name = "s2mps14-pmic",
	}, {
		.name = "s2mps14-rtc",
	}, {
		.name = "s2mps14-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,
	},
	{	.compatible = "samsung,s2mps14-pmic",
		.data = (void *)S2MPS14X,
	},
	{},
};
#endif

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 s2mps14_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S2MPS14_REG_LDODSCH3,
	.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 s5m_rtc_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = SEC_RTC_REG_MAX,
};

static const struct regmap_config s2mps14_rtc_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S2MPS_RTC_REG_MAX,
};

#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 unsigned long 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 (unsigned long)match->data;
	}
#endif
	return 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, *regmap_rtc;
	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;
		/*
		 * The rtc-s5m driver does not support S2MPS11 and there
		 * is no mfd_cell for S2MPS11 RTC device.
		 * However we must pass something to devm_regmap_init_i2c()
		 * so use S5M-like regmap config even though it wouldn't work.
		 */
		regmap_rtc = &s5m_rtc_regmap_config;
		break;
	case S2MPS14X:
		regmap = &s2mps14_regmap_config;
		regmap_rtc = &s2mps14_rtc_regmap_config;
		break;
	case S5M8763X:
		regmap = &s5m8763_regmap_config;
		regmap_rtc = &s5m_rtc_regmap_config;
		break;
	case S5M8767X:
		regmap = &s5m8767_regmap_config;
		regmap_rtc = &s5m_rtc_regmap_config;
		break;
	default:
		regmap = &sec_regmap_config;
		regmap_rtc = &s5m_rtc_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);
	if (!sec_pmic->rtc) {
		dev_err(&i2c->dev, "Failed to allocate I2C for RTC\n");
		return -ENODEV;
	}
	i2c_set_clientdata(sec_pmic->rtc, sec_pmic);

	sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc, regmap_rtc);
	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;
	case S2MPS14X:
		ret = mfd_add_devices(sec_pmic->dev, -1, s2mps14_devs,
				      ARRAY_SIZE(s2mps14_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;
}

#ifdef CONFIG_PM_SLEEP
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;
}
#endif /* CONFIG_PM_SLEEP */

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	29	#include <linux/mfd/samsung/s2mps11.h>
dc691966	30	#include <linux/mfd/samsung/s2mps14.h>
25f311fa MB	31	#include <linux/mfd/samsung/s5m8763.h>
25f311fa MB	32	#include <linux/mfd/samsung/s5m8767.h>
0f5f7078 SK	33	#include <linux/regmap.h>
0f5f7078 SK	34
5ac98553	35	static const struct mfd_cell s5m8751_devs[] = {
88a1cfd6 SK	36	{
	37	.name = "s5m8751-pmic",
	38	}, {
	39	.name = "s5m-charger",
	40	}, {
	41	.name = "s5m8751-codec",
	42	},
	43	};
	44
5ac98553	45	static const struct mfd_cell s5m8763_devs[] = {
88a1cfd6 SK	46	{
	47	.name = "s5m8763-pmic",
	48	}, {
	49	.name = "s5m-rtc",
	50	}, {
	51	.name = "s5m-charger",
	52	},
	53	};
	54
5ac98553	55	static const struct mfd_cell s5m8767_devs[] = {
0f5f7078 SK	56	{
	57	.name = "s5m8767-pmic",
	58	}, {
	59	.name = "s5m-rtc",
39fed00f TB	60	}, {
	61	.name = "s5m8767-clk",
	62	}
0f5f7078 SK	63	};
0f5f7078 SK	64
5ac98553	65	static const struct mfd_cell s2mps11_devs[] = {
9b6d1343 SK	66	{
9b6d1343 SK	67	.name = "s2mps11-pmic",
3134bcae YSB	68	}, {
	69	.name = "s2mps11-clk",
	70	}
9b6d1343 SK	71	};
9b6d1343 SK	72
dc691966 KK	73	static const struct mfd_cell s2mps14_devs[] = {
	74	{
	75	.name = "s2mps14-pmic",
	76	}, {
	77	.name = "s2mps14-rtc",
	78	}, {
	79	.name = "s2mps14-clk",
	80	}
	81	};
	82
26aec009 ADK	83	#ifdef CONFIG_OF
	84	static struct of_device_id sec_dt_match[] = {
	85	{ .compatible = "samsung,s5m8767-pmic",
	86	.data = (void *)S5M8767X,
	87	},
aa32acad YSB	88	{ .compatible = "samsung,s2mps11-pmic",
	89	.data = (void *)S2MPS11X,
	90	},
dc691966 KK	91	{ .compatible = "samsung,s2mps14-pmic",
	92	.data = (void *)S2MPS14X,
	93	},
26aec009 ADK	94	{},
	95	};
	96	#endif
	97
6b845ba9 MB	98	static bool s2mps11_volatile(struct device *dev, unsigned int reg)
	99	{
	100	switch (reg) {
	101	case S2MPS11_REG_INT1M:
	102	case S2MPS11_REG_INT2M:
	103	case S2MPS11_REG_INT3M:
	104	return false;
	105	default:
	106	return true;
	107	}
	108	}
	109
	110	static bool s5m8763_volatile(struct device *dev, unsigned int reg)
	111	{
	112	switch (reg) {
	113	case S5M8763_REG_IRQM1:
	114	case S5M8763_REG_IRQM2:
	115	case S5M8763_REG_IRQM3:
	116	case S5M8763_REG_IRQM4:
	117	return false;
	118	default:
	119	return true;
	120	}
	121	}
	122
a30fffb0	123	static const struct regmap_config sec_regmap_config = {
0f5f7078 SK	124	.reg_bits = 8,
	125	.val_bits = 8,
	126	};
	127
a30fffb0	128	static const struct regmap_config s2mps11_regmap_config = {
25f311fa MB	129	.reg_bits = 8,
	130	.val_bits = 8,
	131
	132	.max_register = S2MPS11_REG_L38CTRL,
6b845ba9 MB	133	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	134	.cache_type = REGCACHE_FLAT,
25f311fa MB	135	};
25f311fa MB	136
dc691966 KK	137	static const struct regmap_config s2mps14_regmap_config = {
	138	.reg_bits = 8,
	139	.val_bits = 8,
	140
	141	.max_register = S2MPS14_REG_LDODSCH3,
	142	.volatile_reg = s2mps11_volatile,
	143	.cache_type = REGCACHE_FLAT,
	144	};
	145
a30fffb0	146	static const struct regmap_config s5m8763_regmap_config = {
25f311fa MB	147	.reg_bits = 8,
	148	.val_bits = 8,
	149
	150	.max_register = S5M8763_REG_LBCNFG2,
6b845ba9 MB	151	.volatile_reg = s5m8763_volatile,
6b845ba9 MB	152	.cache_type = REGCACHE_FLAT,
25f311fa MB	153	};
25f311fa MB	154
a30fffb0	155	static const struct regmap_config s5m8767_regmap_config = {
25f311fa MB	156	.reg_bits = 8,
	157	.val_bits = 8,
	158
	159	.max_register = S5M8767_REG_LDO28CTRL,
6b845ba9 MB	160	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	161	.cache_type = REGCACHE_FLAT,
25f311fa	162	};
26aec009	163
dc691966	164	static const struct regmap_config s5m_rtc_regmap_config = {
3e1e4a5f KK	165	.reg_bits = 8,
3e1e4a5f KK	166	.val_bits = 8,
b07e2b70 KK	167
b07e2b70 KK	168	.max_register = SEC_RTC_REG_MAX,
3e1e4a5f KK	169	};
3e1e4a5f KK	170
dc691966 KK	171	static const struct regmap_config s2mps14_rtc_regmap_config = {
	172	.reg_bits = 8,
	173	.val_bits = 8,
	174
	175	.max_register = S2MPS_RTC_REG_MAX,
	176	};
	177
26aec009 ADK	178	#ifdef CONFIG_OF
	179	/*
	180	* Only the common platform data elements for s5m8767 are parsed here from the
	181	* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
	182	* others have to parse their own platform data elements from device tree.
	183	*
	184	* The s5m8767 platform data structure is instantiated here and the drivers for
	185	* the sub-modules need not instantiate another instance while parsing their
	186	* platform data.
	187	*/
	188	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
	189	struct device *dev)
	190	{
	191	struct sec_platform_data *pd;
	192
	193	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
	194	if (!pd) {
	195	dev_err(dev, "could not allocate memory for pdata\n");
	196	return ERR_PTR(-ENOMEM);
	197	}
	198
	199	/*
	200	* ToDo: the 'wakeup' member in the platform data is more of a linux
	201	* specfic information. Hence, there is no binding for that yet and
	202	* not parsed here.
	203	*/
	204
	205	return pd;
	206	}
	207	#else
197bf856	208	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
26aec009 ADK	209	struct device *dev)
26aec009 ADK	210	{
005718c0	211	return NULL;
26aec009 ADK	212	}
	213	#endif
	214
8f695de5	215	static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c,
26aec009 ADK	216	const struct i2c_device_id *id)
	217	{
	218	#ifdef CONFIG_OF
	219	if (i2c->dev.of_node) {
	220	const struct of_device_id *match;
	221	match = of_match_node(sec_dt_match, i2c->dev.of_node);
8f695de5	222	return (unsigned long)match->data;
26aec009 ADK	223	}
26aec009 ADK	224	#endif
8f695de5	225	return id->driver_data;
26aec009 ADK	226	}
26aec009 ADK	227
63063bfb	228	static int sec_pmic_probe(struct i2c_client *i2c,
0f5f7078 SK	229	const struct i2c_device_id *id)
0f5f7078 SK	230	{
334a41ce	231	struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
3e5a45f7	232	const struct regmap_config regmap, regmap_rtc;
63063bfb	233	struct sec_pmic_dev *sec_pmic;
61a2af30	234	int ret;
0f5f7078	235
63063bfb	236	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
621210e2	237	GFP_KERNEL);
63063bfb	238	if (sec_pmic == NULL)
0f5f7078 SK	239	return -ENOMEM;
0f5f7078 SK	240
63063bfb SK	241	i2c_set_clientdata(i2c, sec_pmic);
	242	sec_pmic->dev = &i2c->dev;
	243	sec_pmic->i2c = i2c;
	244	sec_pmic->irq = i2c->irq;
26aec009 ADK	245	sec_pmic->type = sec_i2c_get_driver_data(i2c, id);
	246
	247	if (sec_pmic->dev->of_node) {
	248	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	249	if (IS_ERR(pdata)) {
	250	ret = PTR_ERR(pdata);
	251	return ret;
	252	}
	253	pdata->device_type = sec_pmic->type;
	254	}
0f5f7078	255	if (pdata) {
63063bfb SK	256	sec_pmic->device_type = pdata->device_type;
	257	sec_pmic->ono = pdata->ono;
	258	sec_pmic->irq_base = pdata->irq_base;
	259	sec_pmic->wakeup = pdata->wakeup;
26aec009	260	sec_pmic->pdata = pdata;
0f5f7078 SK	261	}
0f5f7078 SK	262
25f311fa MB	263	switch (sec_pmic->device_type) {
	264	case S2MPS11X:
	265	regmap = &s2mps11_regmap_config;
3e5a45f7 KK	266	/*
	267	* The rtc-s5m driver does not support S2MPS11 and there
	268	* is no mfd_cell for S2MPS11 RTC device.
	269	* However we must pass something to devm_regmap_init_i2c()
	270	* so use S5M-like regmap config even though it wouldn't work.
	271	*/
dc691966 KK	272	regmap_rtc = &s5m_rtc_regmap_config;
	273	break;
	274	case S2MPS14X:
	275	regmap = &s2mps14_regmap_config;
	276	regmap_rtc = &s2mps14_rtc_regmap_config;
25f311fa MB	277	break;
	278	case S5M8763X:
	279	regmap = &s5m8763_regmap_config;
dc691966	280	regmap_rtc = &s5m_rtc_regmap_config;
25f311fa MB	281	break;
	282	case S5M8767X:
	283	regmap = &s5m8767_regmap_config;
dc691966	284	regmap_rtc = &s5m_rtc_regmap_config;
25f311fa MB	285	break;
	286	default:
	287	regmap = &sec_regmap_config;
dc691966	288	regmap_rtc = &s5m_rtc_regmap_config;
25f311fa MB	289	break;
	290	}
	291
3e1e4a5f KK	292	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	293	if (IS_ERR(sec_pmic->regmap_pmic)) {
	294	ret = PTR_ERR(sec_pmic->regmap_pmic);
0f5f7078	295	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
61a2af30	296	ret);
1092e1c7	297	return ret;
0f5f7078 SK	298	}
0f5f7078 SK	299
63063bfb	300	sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
65aba1e0 KK	301	if (!sec_pmic->rtc) {
	302	dev_err(&i2c->dev, "Failed to allocate I2C for RTC\n");
	303	return -ENODEV;
	304	}
63063bfb	305	i2c_set_clientdata(sec_pmic->rtc, sec_pmic);
0f5f7078	306
3e5a45f7	307	sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc, regmap_rtc);
3e1e4a5f KK	308	if (IS_ERR(sec_pmic->regmap_rtc)) {
	309	ret = PTR_ERR(sec_pmic->regmap_rtc);
	310	dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n",
	311	ret);
	312	return ret;
	313	}
	314
c3ebb30a	315	if (pdata && pdata->cfg_pmic_irq)
0f5f7078 SK	316	pdata->cfg_pmic_irq();
0f5f7078 SK	317
63063bfb	318	sec_irq_init(sec_pmic);
0f5f7078	319
63063bfb	320	pm_runtime_set_active(sec_pmic->dev);
0f5f7078	321
63063bfb	322	switch (sec_pmic->device_type) {
88a1cfd6	323	case S5M8751X:
63063bfb	324	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs,
0848c94f	325	ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL);
88a1cfd6 SK	326	break;
88a1cfd6 SK	327	case S5M8763X:
63063bfb	328	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs,
0848c94f	329	ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL);
88a1cfd6 SK	330	break;
88a1cfd6 SK	331	case S5M8767X:
63063bfb	332	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
0848c94f	333	ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL);
88a1cfd6	334	break;
9b6d1343 SK	335	case S2MPS11X:
9b6d1343 SK	336	ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
0848c94f	337	ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL);
9b6d1343	338	break;
dc691966 KK	339	case S2MPS14X:
	340	ret = mfd_add_devices(sec_pmic->dev, -1, s2mps14_devs,
	341	ARRAY_SIZE(s2mps14_devs), NULL, 0, NULL);
	342	break;
88a1cfd6 SK	343	default:
	344	/* If this happens the probe function is problem */
	345	BUG();
	346	}
0f5f7078	347
15447a46	348	if (ret)
0f5f7078 SK	349	goto err;
0f5f7078 SK	350
f6d6daaf KK	351	device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
f6d6daaf KK	352
0f5f7078 SK	353	return ret;
	354
	355	err:
63063bfb SK	356	sec_irq_exit(sec_pmic);
63063bfb SK	357	i2c_unregister_device(sec_pmic->rtc);
0f5f7078 SK	358	return ret;
	359	}
	360
63063bfb	361	static int sec_pmic_remove(struct i2c_client *i2c)
0f5f7078	362	{
63063bfb	363	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
0f5f7078	364
63063bfb SK	365	mfd_remove_devices(sec_pmic->dev);
	366	sec_irq_exit(sec_pmic);
	367	i2c_unregister_device(sec_pmic->rtc);
0f5f7078 SK	368	return 0;
	369	}
	370
8321bbf8	371	#ifdef CONFIG_PM_SLEEP
f6d6daaf KK	372	static int sec_pmic_suspend(struct device *dev)
	373	{
	374	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	375	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	376
	377	if (device_may_wakeup(dev)) {
	378	enable_irq_wake(sec_pmic->irq);
	379	/*
	380	* PMIC IRQ must be disabled during suspend for RTC alarm
	381	* to work properly.
	382	* When device is woken up from suspend by RTC Alarm, an
	383	* interrupt occurs before resuming I2C bus controller.
	384	* The interrupt is handled by regmap_irq_thread which tries
	385	* to read RTC registers. This read fails (I2C is still
	386	* suspended) and RTC Alarm interrupt is disabled.
	387	*/
	388	disable_irq(sec_pmic->irq);
	389	}
	390
	391	return 0;
	392	}
	393
	394	static int sec_pmic_resume(struct device *dev)
	395	{
	396	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	397	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	398
	399	if (device_may_wakeup(dev)) {
	400	disable_irq_wake(sec_pmic->irq);
	401	enable_irq(sec_pmic->irq);
	402	}
	403
	404	return 0;
	405	}
8321bbf8	406	#endif /* CONFIG_PM_SLEEP */
f6d6daaf KK	407
	408	static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
	409
63063bfb SK	410	static const struct i2c_device_id sec_pmic_id[] = {
63063bfb SK	411	{ "sec_pmic", 0 },
0f5f7078 SK	412	{ }
0f5f7078 SK	413	};
63063bfb	414	MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
0f5f7078	415
63063bfb	416	static struct i2c_driver sec_pmic_driver = {
0f5f7078	417	.driver = {
63063bfb	418	.name = "sec_pmic",
0f5f7078	419	.owner = THIS_MODULE,
f6d6daaf	420	.pm = &sec_pmic_pm_ops,
26aec009	421	.of_match_table = of_match_ptr(sec_dt_match),
0f5f7078	422	},
63063bfb SK	423	.probe = sec_pmic_probe,
	424	.remove = sec_pmic_remove,
	425	.id_table = sec_pmic_id,
0f5f7078 SK	426	};
0f5f7078 SK	427
63063bfb	428	static int __init sec_pmic_init(void)
0f5f7078	429	{
63063bfb	430	return i2c_add_driver(&sec_pmic_driver);
0f5f7078 SK	431	}
0f5f7078 SK	432
63063bfb	433	subsys_initcall(sec_pmic_init);
0f5f7078	434
63063bfb	435	static void __exit sec_pmic_exit(void)
0f5f7078	436	{
63063bfb	437	i2c_del_driver(&sec_pmic_driver);
0f5f7078	438	}
63063bfb	439	module_exit(sec_pmic_exit);
0f5f7078 SK	440
	441	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	442	MODULE_DESCRIPTION("Core support for the S5M MFD");
	443	MODULE_LICENSE("GPL");