[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",
	}, {
		.name = "s5m8767-clk",
	}
};

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

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,

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