[deliverable/linux.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/s2mpa01.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",
	}
};

static const struct mfd_cell s2mpa01_devs[] = {
	{
		.name = "s2mpa01-pmic",
	},
};

#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,
	}, {
		.compatible = "samsung,s2mpa01-pmic",
		.data = (void *)S2MPA01,
	}, {
		/* Sentinel */
	},
};
#endif

static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case S2MPA01_REG_INT1M:
	case S2MPA01_REG_INT2M:
	case S2MPA01_REG_INT3M:
		return false;
	default:
		return true;
	}
}

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 s2mpa01_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S2MPA01_REG_LDO_OVCB4,
	.volatile_reg = s2mpa01_volatile,
	.cache_type = REGCACHE_FLAT,
};

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 S2MPA01:
		regmap = &s2mpa01_regmap_config;
		break;
	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 S2MPA01:
		ret = mfd_add_devices(sec_pmic->dev, -1, s2mpa01_devs,
				      ARRAY_SIZE(s2mpa01_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>
ce24991e	29	#include <linux/mfd/samsung/s2mpa01.h>
25f311fa	30	#include <linux/mfd/samsung/s2mps11.h>
dc691966	31	#include <linux/mfd/samsung/s2mps14.h>
25f311fa MB	32	#include <linux/mfd/samsung/s5m8763.h>
25f311fa MB	33	#include <linux/mfd/samsung/s5m8767.h>
0f5f7078 SK	34	#include <linux/regmap.h>
0f5f7078 SK	35
5ac98553	36	static const struct mfd_cell s5m8751_devs[] = {
88a1cfd6 SK	37	{
	38	.name = "s5m8751-pmic",
	39	}, {
	40	.name = "s5m-charger",
	41	}, {
	42	.name = "s5m8751-codec",
	43	},
	44	};
	45
5ac98553	46	static const struct mfd_cell s5m8763_devs[] = {
88a1cfd6 SK	47	{
	48	.name = "s5m8763-pmic",
	49	}, {
	50	.name = "s5m-rtc",
	51	}, {
	52	.name = "s5m-charger",
	53	},
	54	};
	55
5ac98553	56	static const struct mfd_cell s5m8767_devs[] = {
0f5f7078 SK	57	{
	58	.name = "s5m8767-pmic",
	59	}, {
	60	.name = "s5m-rtc",
39fed00f TB	61	}, {
	62	.name = "s5m8767-clk",
	63	}
0f5f7078 SK	64	};
0f5f7078 SK	65
5ac98553	66	static const struct mfd_cell s2mps11_devs[] = {
9b6d1343 SK	67	{
9b6d1343 SK	68	.name = "s2mps11-pmic",
3134bcae YSB	69	}, {
	70	.name = "s2mps11-clk",
	71	}
9b6d1343 SK	72	};
9b6d1343 SK	73
dc691966 KK	74	static const struct mfd_cell s2mps14_devs[] = {
	75	{
	76	.name = "s2mps14-pmic",
	77	}, {
	78	.name = "s2mps14-rtc",
	79	}, {
	80	.name = "s2mps14-clk",
	81	}
	82	};
	83
ce24991e SK	84	static const struct mfd_cell s2mpa01_devs[] = {
	85	{
	86	.name = "s2mpa01-pmic",
	87	},
	88	};
	89
26aec009 ADK	90	#ifdef CONFIG_OF
	91	static struct of_device_id sec_dt_match[] = {
	92	{ .compatible = "samsung,s5m8767-pmic",
	93	.data = (void *)S5M8767X,
ce24991e SK	94	}, {
ce24991e SK	95	.compatible = "samsung,s2mps11-pmic",
aa32acad	96	.data = (void *)S2MPS11X,
ce24991e SK	97	}, {
ce24991e SK	98	.compatible = "samsung,s2mps14-pmic",
dc691966	99	.data = (void *)S2MPS14X,
ce24991e SK	100	}, {
	101	.compatible = "samsung,s2mpa01-pmic",
	102	.data = (void *)S2MPA01,
	103	}, {
	104	/* Sentinel */
dc691966	105	},
26aec009 ADK	106	};
	107	#endif
	108
ce24991e SK	109	static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
	110	{
	111	switch (reg) {
	112	case S2MPA01_REG_INT1M:
	113	case S2MPA01_REG_INT2M:
	114	case S2MPA01_REG_INT3M:
	115	return false;
	116	default:
	117	return true;
	118	}
	119	}
	120
6b845ba9 MB	121	static bool s2mps11_volatile(struct device *dev, unsigned int reg)
	122	{
	123	switch (reg) {
	124	case S2MPS11_REG_INT1M:
	125	case S2MPS11_REG_INT2M:
	126	case S2MPS11_REG_INT3M:
	127	return false;
	128	default:
	129	return true;
	130	}
	131	}
	132
	133	static bool s5m8763_volatile(struct device *dev, unsigned int reg)
	134	{
	135	switch (reg) {
	136	case S5M8763_REG_IRQM1:
	137	case S5M8763_REG_IRQM2:
	138	case S5M8763_REG_IRQM3:
	139	case S5M8763_REG_IRQM4:
	140	return false;
	141	default:
	142	return true;
	143	}
	144	}
	145
a30fffb0	146	static const struct regmap_config sec_regmap_config = {
0f5f7078 SK	147	.reg_bits = 8,
	148	.val_bits = 8,
	149	};
	150
ce24991e SK	151	static const struct regmap_config s2mpa01_regmap_config = {
	152	.reg_bits = 8,
	153	.val_bits = 8,
	154
	155	.max_register = S2MPA01_REG_LDO_OVCB4,
	156	.volatile_reg = s2mpa01_volatile,
	157	.cache_type = REGCACHE_FLAT,
	158	};
	159
a30fffb0	160	static const struct regmap_config s2mps11_regmap_config = {
25f311fa MB	161	.reg_bits = 8,
	162	.val_bits = 8,
	163
	164	.max_register = S2MPS11_REG_L38CTRL,
6b845ba9 MB	165	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	166	.cache_type = REGCACHE_FLAT,
25f311fa MB	167	};
25f311fa MB	168
dc691966 KK	169	static const struct regmap_config s2mps14_regmap_config = {
	170	.reg_bits = 8,
	171	.val_bits = 8,
	172
	173	.max_register = S2MPS14_REG_LDODSCH3,
	174	.volatile_reg = s2mps11_volatile,
	175	.cache_type = REGCACHE_FLAT,
	176	};
	177
a30fffb0	178	static const struct regmap_config s5m8763_regmap_config = {
25f311fa MB	179	.reg_bits = 8,
	180	.val_bits = 8,
	181
	182	.max_register = S5M8763_REG_LBCNFG2,
6b845ba9 MB	183	.volatile_reg = s5m8763_volatile,
6b845ba9 MB	184	.cache_type = REGCACHE_FLAT,
25f311fa MB	185	};
25f311fa MB	186
a30fffb0	187	static const struct regmap_config s5m8767_regmap_config = {
25f311fa MB	188	.reg_bits = 8,
	189	.val_bits = 8,
	190
	191	.max_register = S5M8767_REG_LDO28CTRL,
6b845ba9 MB	192	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	193	.cache_type = REGCACHE_FLAT,
25f311fa	194	};
26aec009	195
dc691966	196	static const struct regmap_config s5m_rtc_regmap_config = {
3e1e4a5f KK	197	.reg_bits = 8,
3e1e4a5f KK	198	.val_bits = 8,
b07e2b70 KK	199
b07e2b70 KK	200	.max_register = SEC_RTC_REG_MAX,
3e1e4a5f KK	201	};
3e1e4a5f KK	202
dc691966 KK	203	static const struct regmap_config s2mps14_rtc_regmap_config = {
	204	.reg_bits = 8,
	205	.val_bits = 8,
	206
	207	.max_register = S2MPS_RTC_REG_MAX,
	208	};
	209
26aec009 ADK	210	#ifdef CONFIG_OF
	211	/*
	212	* Only the common platform data elements for s5m8767 are parsed here from the
	213	* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
	214	* others have to parse their own platform data elements from device tree.
	215	*
	216	* The s5m8767 platform data structure is instantiated here and the drivers for
	217	* the sub-modules need not instantiate another instance while parsing their
	218	* platform data.
	219	*/
	220	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
	221	struct device *dev)
	222	{
	223	struct sec_platform_data *pd;
	224
	225	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
	226	if (!pd) {
	227	dev_err(dev, "could not allocate memory for pdata\n");
	228	return ERR_PTR(-ENOMEM);
	229	}
	230
	231	/*
	232	* ToDo: the 'wakeup' member in the platform data is more of a linux
	233	* specfic information. Hence, there is no binding for that yet and
	234	* not parsed here.
	235	*/
	236
	237	return pd;
	238	}
	239	#else
197bf856	240	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
26aec009 ADK	241	struct device *dev)
26aec009 ADK	242	{
005718c0	243	return NULL;
26aec009 ADK	244	}
	245	#endif
	246
8f695de5	247	static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c,
26aec009 ADK	248	const struct i2c_device_id *id)
	249	{
	250	#ifdef CONFIG_OF
	251	if (i2c->dev.of_node) {
	252	const struct of_device_id *match;
	253	match = of_match_node(sec_dt_match, i2c->dev.of_node);
8f695de5	254	return (unsigned long)match->data;
26aec009 ADK	255	}
26aec009 ADK	256	#endif
8f695de5	257	return id->driver_data;
26aec009 ADK	258	}
26aec009 ADK	259
63063bfb	260	static int sec_pmic_probe(struct i2c_client *i2c,
0f5f7078 SK	261	const struct i2c_device_id *id)
0f5f7078 SK	262	{
334a41ce	263	struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
3e5a45f7	264	const struct regmap_config regmap, regmap_rtc;
63063bfb	265	struct sec_pmic_dev *sec_pmic;
61a2af30	266	int ret;
0f5f7078	267
63063bfb	268	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
621210e2	269	GFP_KERNEL);
63063bfb	270	if (sec_pmic == NULL)
0f5f7078 SK	271	return -ENOMEM;
0f5f7078 SK	272
63063bfb SK	273	i2c_set_clientdata(i2c, sec_pmic);
	274	sec_pmic->dev = &i2c->dev;
	275	sec_pmic->i2c = i2c;
	276	sec_pmic->irq = i2c->irq;
26aec009 ADK	277	sec_pmic->type = sec_i2c_get_driver_data(i2c, id);
	278
	279	if (sec_pmic->dev->of_node) {
	280	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	281	if (IS_ERR(pdata)) {
	282	ret = PTR_ERR(pdata);
	283	return ret;
	284	}
	285	pdata->device_type = sec_pmic->type;
	286	}
0f5f7078	287	if (pdata) {
63063bfb SK	288	sec_pmic->device_type = pdata->device_type;
	289	sec_pmic->ono = pdata->ono;
	290	sec_pmic->irq_base = pdata->irq_base;
	291	sec_pmic->wakeup = pdata->wakeup;
26aec009	292	sec_pmic->pdata = pdata;
0f5f7078 SK	293	}
0f5f7078 SK	294
25f311fa	295	switch (sec_pmic->device_type) {
ce24991e SK	296	case S2MPA01:
	297	regmap = &s2mpa01_regmap_config;
	298	break;
25f311fa MB	299	case S2MPS11X:
25f311fa MB	300	regmap = &s2mps11_regmap_config;
3e5a45f7 KK	301	/*
	302	* The rtc-s5m driver does not support S2MPS11 and there
	303	* is no mfd_cell for S2MPS11 RTC device.
	304	* However we must pass something to devm_regmap_init_i2c()
	305	* so use S5M-like regmap config even though it wouldn't work.
	306	*/
dc691966 KK	307	regmap_rtc = &s5m_rtc_regmap_config;
	308	break;
	309	case S2MPS14X:
	310	regmap = &s2mps14_regmap_config;
	311	regmap_rtc = &s2mps14_rtc_regmap_config;
25f311fa MB	312	break;
	313	case S5M8763X:
	314	regmap = &s5m8763_regmap_config;
dc691966	315	regmap_rtc = &s5m_rtc_regmap_config;
25f311fa MB	316	break;
	317	case S5M8767X:
	318	regmap = &s5m8767_regmap_config;
dc691966	319	regmap_rtc = &s5m_rtc_regmap_config;
25f311fa MB	320	break;
	321	default:
	322	regmap = &sec_regmap_config;
dc691966	323	regmap_rtc = &s5m_rtc_regmap_config;
25f311fa MB	324	break;
	325	}
	326
3e1e4a5f KK	327	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	328	if (IS_ERR(sec_pmic->regmap_pmic)) {
	329	ret = PTR_ERR(sec_pmic->regmap_pmic);
0f5f7078	330	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
61a2af30	331	ret);
1092e1c7	332	return ret;
0f5f7078 SK	333	}
0f5f7078 SK	334
63063bfb	335	sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
65aba1e0 KK	336	if (!sec_pmic->rtc) {
	337	dev_err(&i2c->dev, "Failed to allocate I2C for RTC\n");
	338	return -ENODEV;
	339	}
63063bfb	340	i2c_set_clientdata(sec_pmic->rtc, sec_pmic);
0f5f7078	341
3e5a45f7	342	sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc, regmap_rtc);
3e1e4a5f KK	343	if (IS_ERR(sec_pmic->regmap_rtc)) {
	344	ret = PTR_ERR(sec_pmic->regmap_rtc);
	345	dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n",
	346	ret);
	347	return ret;
	348	}
	349
c3ebb30a	350	if (pdata && pdata->cfg_pmic_irq)
0f5f7078 SK	351	pdata->cfg_pmic_irq();
0f5f7078 SK	352
63063bfb	353	sec_irq_init(sec_pmic);
0f5f7078	354
63063bfb	355	pm_runtime_set_active(sec_pmic->dev);
0f5f7078	356
63063bfb	357	switch (sec_pmic->device_type) {
88a1cfd6	358	case S5M8751X:
63063bfb	359	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs,
0848c94f	360	ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL);
88a1cfd6 SK	361	break;
88a1cfd6 SK	362	case S5M8763X:
63063bfb	363	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs,
0848c94f	364	ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL);
88a1cfd6 SK	365	break;
88a1cfd6 SK	366	case S5M8767X:
63063bfb	367	ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
0848c94f	368	ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL);
88a1cfd6	369	break;
ce24991e SK	370	case S2MPA01:
	371	ret = mfd_add_devices(sec_pmic->dev, -1, s2mpa01_devs,
	372	ARRAY_SIZE(s2mpa01_devs), NULL, 0, NULL);
	373	break;
9b6d1343 SK	374	case S2MPS11X:
9b6d1343 SK	375	ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
0848c94f	376	ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL);
9b6d1343	377	break;
dc691966 KK	378	case S2MPS14X:
	379	ret = mfd_add_devices(sec_pmic->dev, -1, s2mps14_devs,
	380	ARRAY_SIZE(s2mps14_devs), NULL, 0, NULL);
	381	break;
88a1cfd6 SK	382	default:
	383	/* If this happens the probe function is problem */
	384	BUG();
	385	}
0f5f7078	386
15447a46	387	if (ret)
0f5f7078 SK	388	goto err;
0f5f7078 SK	389
f6d6daaf KK	390	device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
f6d6daaf KK	391
0f5f7078 SK	392	return ret;
	393
	394	err:
63063bfb SK	395	sec_irq_exit(sec_pmic);
63063bfb SK	396	i2c_unregister_device(sec_pmic->rtc);
0f5f7078 SK	397	return ret;
	398	}
	399
63063bfb	400	static int sec_pmic_remove(struct i2c_client *i2c)
0f5f7078	401	{
63063bfb	402	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
0f5f7078	403
63063bfb SK	404	mfd_remove_devices(sec_pmic->dev);
	405	sec_irq_exit(sec_pmic);
	406	i2c_unregister_device(sec_pmic->rtc);
0f5f7078 SK	407	return 0;
	408	}
	409
8321bbf8	410	#ifdef CONFIG_PM_SLEEP
f6d6daaf KK	411	static int sec_pmic_suspend(struct device *dev)
	412	{
	413	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	414	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	415
	416	if (device_may_wakeup(dev)) {
	417	enable_irq_wake(sec_pmic->irq);
	418	/*
	419	* PMIC IRQ must be disabled during suspend for RTC alarm
	420	* to work properly.
	421	* When device is woken up from suspend by RTC Alarm, an
	422	* interrupt occurs before resuming I2C bus controller.
	423	* The interrupt is handled by regmap_irq_thread which tries
	424	* to read RTC registers. This read fails (I2C is still
	425	* suspended) and RTC Alarm interrupt is disabled.
	426	*/
	427	disable_irq(sec_pmic->irq);
	428	}
	429
	430	return 0;
	431	}
	432
	433	static int sec_pmic_resume(struct device *dev)
	434	{
	435	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	436	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	437
	438	if (device_may_wakeup(dev)) {
	439	disable_irq_wake(sec_pmic->irq);
	440	enable_irq(sec_pmic->irq);
	441	}
	442
	443	return 0;
	444	}
8321bbf8	445	#endif /* CONFIG_PM_SLEEP */
f6d6daaf KK	446
	447	static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
	448
63063bfb SK	449	static const struct i2c_device_id sec_pmic_id[] = {
63063bfb SK	450	{ "sec_pmic", 0 },
0f5f7078 SK	451	{ }
0f5f7078 SK	452	};
63063bfb	453	MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
0f5f7078	454
63063bfb	455	static struct i2c_driver sec_pmic_driver = {
0f5f7078	456	.driver = {
63063bfb	457	.name = "sec_pmic",
0f5f7078	458	.owner = THIS_MODULE,
f6d6daaf	459	.pm = &sec_pmic_pm_ops,
26aec009	460	.of_match_table = of_match_ptr(sec_dt_match),
0f5f7078	461	},
63063bfb SK	462	.probe = sec_pmic_probe,
	463	.remove = sec_pmic_remove,
	464	.id_table = sec_pmic_id,
0f5f7078 SK	465	};
0f5f7078 SK	466
63063bfb	467	static int __init sec_pmic_init(void)
0f5f7078	468	{
63063bfb	469	return i2c_add_driver(&sec_pmic_driver);
0f5f7078 SK	470	}
0f5f7078 SK	471
63063bfb	472	subsys_initcall(sec_pmic_init);
0f5f7078	473
63063bfb	474	static void __exit sec_pmic_exit(void)
0f5f7078	475	{
63063bfb	476	i2c_del_driver(&sec_pmic_driver);
0f5f7078	477	}
63063bfb	478	module_exit(sec_pmic_exit);
0f5f7078 SK	479
	480	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	481	MODULE_DESCRIPTION("Core support for the S5M MFD");
	482	MODULE_LICENSE("GPL");