[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/s2mpa01.h>
#include <linux/mfd/samsung/s2mps11.h>
#include <linux/mfd/samsung/s2mps14.h>
#include <linux/mfd/samsung/s2mpu02.h>
#include <linux/mfd/samsung/s5m8763.h>
#include <linux/mfd/samsung/s5m8767.h>
#include <linux/regulator/machine.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",
		.of_compatible = "samsung,s5m8767-clk",
	}
};

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

static const struct mfd_cell s2mps14_devs[] = {
	{
		.name = "s2mps14-pmic",
	}, {
		.name = "s2mps14-rtc",
	}, {
		.name = "s2mps14-clk",
		.of_compatible = "samsung,s2mps14-clk",
	}
};

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

static const struct mfd_cell s2mpu02_devs[] = {
	{ .name = "s2mpu02-pmic", },
	{ .name = "s2mpu02-rtc", },
	{
		.name = "s2mpu02-clk",
		.of_compatible = "samsung,s2mpu02-clk",
	}
};

#ifdef CONFIG_OF
static const 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,
	}, {
		.compatible = "samsung,s2mpu02-pmic",
		.data = (void *)S2MPU02,
	}, {
		/* 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 s2mpu02_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case S2MPU02_REG_INT1M:
	case S2MPU02_REG_INT2M:
	case S2MPU02_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 s2mpu02_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S2MPU02_REG_DVSDATA,
	.volatile_reg = s2mpu02_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,
};

#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;
	const struct mfd_cell *sec_devs;
	struct sec_pmic_dev *sec_pmic;
	unsigned long device_type;
	int ret, num_sec_devs;

	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;
	device_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 = device_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;
		break;
	case S2MPS14X:
		regmap = &s2mps14_regmap_config;
		break;
	case S5M8763X:
		regmap = &s5m8763_regmap_config;
		break;
	case S5M8767X:
		regmap = &s5m8767_regmap_config;
		break;
	case S2MPU02:
		regmap = &s2mpu02_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;
	}

	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:
		sec_devs = s5m8751_devs;
		num_sec_devs = ARRAY_SIZE(s5m8751_devs);
		break;
	case S5M8763X:
		sec_devs = s5m8763_devs;
		num_sec_devs = ARRAY_SIZE(s5m8763_devs);
		break;
	case S5M8767X:
		sec_devs = s5m8767_devs;
		num_sec_devs = ARRAY_SIZE(s5m8767_devs);
		break;
	case S2MPA01:
		sec_devs = s2mpa01_devs;
		num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
		break;
	case S2MPS11X:
		sec_devs = s2mps11_devs;
		num_sec_devs = ARRAY_SIZE(s2mps11_devs);
		break;
	case S2MPS14X:
		sec_devs = s2mps14_devs;
		num_sec_devs = ARRAY_SIZE(s2mps14_devs);
		break;
	case S2MPU02:
		sec_devs = s2mpu02_devs;
		num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
		break;
	default:
		/* If this happens the probe function is problem */
		BUG();
	}
	ret = mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL,
			      0, NULL);
	if (ret)
		goto err_mfd;

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

	return ret;

err_mfd:
	sec_irq_exit(sec_pmic);
	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);
	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, 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);

	switch (sec_pmic->device_type) {
	case S2MPS14X:
	case S2MPU02:
		regulator_suspend_prepare(PM_SUSPEND_MEM);
		break;
	default:
		break;
	}

	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>
54227bcf SK	27	#include <linux/mfd/samsung/irq.h>
ce24991e	28	#include <linux/mfd/samsung/s2mpa01.h>
25f311fa	29	#include <linux/mfd/samsung/s2mps11.h>
dc691966	30	#include <linux/mfd/samsung/s2mps14.h>
00e2573d	31	#include <linux/mfd/samsung/s2mpu02.h>
25f311fa MB	32	#include <linux/mfd/samsung/s5m8763.h>
25f311fa MB	33	#include <linux/mfd/samsung/s5m8767.h>
b7cde707	34	#include <linux/regulator/machine.h>
0f5f7078 SK	35	#include <linux/regmap.h>
0f5f7078 SK	36
5ac98553	37	static const struct mfd_cell s5m8751_devs[] = {
88a1cfd6 SK	38	{
	39	.name = "s5m8751-pmic",
	40	}, {
	41	.name = "s5m-charger",
	42	}, {
	43	.name = "s5m8751-codec",
	44	},
	45	};
	46
5ac98553	47	static const struct mfd_cell s5m8763_devs[] = {
88a1cfd6 SK	48	{
	49	.name = "s5m8763-pmic",
	50	}, {
	51	.name = "s5m-rtc",
	52	}, {
	53	.name = "s5m-charger",
	54	},
	55	};
	56
5ac98553	57	static const struct mfd_cell s5m8767_devs[] = {
0f5f7078 SK	58	{
	59	.name = "s5m8767-pmic",
	60	}, {
	61	.name = "s5m-rtc",
39fed00f TB	62	}, {
39fed00f TB	63	.name = "s5m8767-clk",
53c31b34	64	.of_compatible = "samsung,s5m8767-clk",
39fed00f	65	}
0f5f7078 SK	66	};
0f5f7078 SK	67
5ac98553	68	static const struct mfd_cell s2mps11_devs[] = {
9b6d1343 SK	69	{
9b6d1343 SK	70	.name = "s2mps11-pmic",
3134bcae YSB	71	}, {
3134bcae YSB	72	.name = "s2mps11-clk",
53c31b34	73	.of_compatible = "samsung,s2mps11-clk",
3134bcae	74	}
9b6d1343 SK	75	};
9b6d1343 SK	76
dc691966 KK	77	static const struct mfd_cell s2mps14_devs[] = {
	78	{
	79	.name = "s2mps14-pmic",
	80	}, {
	81	.name = "s2mps14-rtc",
	82	}, {
	83	.name = "s2mps14-clk",
53c31b34	84	.of_compatible = "samsung,s2mps14-clk",
dc691966 KK	85	}
	86	};
	87
ce24991e SK	88	static const struct mfd_cell s2mpa01_devs[] = {
	89	{
	90	.name = "s2mpa01-pmic",
	91	},
	92	};
	93
54e8827d CC	94	static const struct mfd_cell s2mpu02_devs[] = {
	95	{ .name = "s2mpu02-pmic", },
	96	{ .name = "s2mpu02-rtc", },
	97	{
	98	.name = "s2mpu02-clk",
	99	.of_compatible = "samsung,s2mpu02-clk",
	100	}
	101	};
	102
26aec009	103	#ifdef CONFIG_OF
df20b7c5	104	static const struct of_device_id sec_dt_match[] = {
26aec009 ADK	105	{ .compatible = "samsung,s5m8767-pmic",
26aec009 ADK	106	.data = (void *)S5M8767X,
ce24991e SK	107	}, {
ce24991e SK	108	.compatible = "samsung,s2mps11-pmic",
aa32acad	109	.data = (void *)S2MPS11X,
ce24991e SK	110	}, {
ce24991e SK	111	.compatible = "samsung,s2mps14-pmic",
dc691966	112	.data = (void *)S2MPS14X,
ce24991e SK	113	}, {
	114	.compatible = "samsung,s2mpa01-pmic",
	115	.data = (void *)S2MPA01,
54e8827d CC	116	}, {
	117	.compatible = "samsung,s2mpu02-pmic",
	118	.data = (void *)S2MPU02,
ce24991e SK	119	}, {
ce24991e SK	120	/* Sentinel */
dc691966	121	},
26aec009 ADK	122	};
	123	#endif
	124
ce24991e SK	125	static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
	126	{
	127	switch (reg) {
	128	case S2MPA01_REG_INT1M:
	129	case S2MPA01_REG_INT2M:
	130	case S2MPA01_REG_INT3M:
	131	return false;
	132	default:
	133	return true;
	134	}
	135	}
	136
6b845ba9 MB	137	static bool s2mps11_volatile(struct device *dev, unsigned int reg)
	138	{
	139	switch (reg) {
	140	case S2MPS11_REG_INT1M:
	141	case S2MPS11_REG_INT2M:
	142	case S2MPS11_REG_INT3M:
	143	return false;
	144	default:
	145	return true;
	146	}
	147	}
	148
00e2573d CC	149	static bool s2mpu02_volatile(struct device *dev, unsigned int reg)
	150	{
	151	switch (reg) {
	152	case S2MPU02_REG_INT1M:
	153	case S2MPU02_REG_INT2M:
	154	case S2MPU02_REG_INT3M:
	155	return false;
	156	default:
	157	return true;
	158	}
	159	}
	160
6b845ba9 MB	161	static bool s5m8763_volatile(struct device *dev, unsigned int reg)
	162	{
	163	switch (reg) {
	164	case S5M8763_REG_IRQM1:
	165	case S5M8763_REG_IRQM2:
	166	case S5M8763_REG_IRQM3:
	167	case S5M8763_REG_IRQM4:
	168	return false;
	169	default:
	170	return true;
	171	}
	172	}
	173
a30fffb0	174	static const struct regmap_config sec_regmap_config = {
0f5f7078 SK	175	.reg_bits = 8,
	176	.val_bits = 8,
	177	};
	178
ce24991e SK	179	static const struct regmap_config s2mpa01_regmap_config = {
	180	.reg_bits = 8,
	181	.val_bits = 8,
	182
	183	.max_register = S2MPA01_REG_LDO_OVCB4,
	184	.volatile_reg = s2mpa01_volatile,
	185	.cache_type = REGCACHE_FLAT,
	186	};
	187
a30fffb0	188	static const struct regmap_config s2mps11_regmap_config = {
25f311fa MB	189	.reg_bits = 8,
	190	.val_bits = 8,
	191
	192	.max_register = S2MPS11_REG_L38CTRL,
6b845ba9 MB	193	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	194	.cache_type = REGCACHE_FLAT,
25f311fa MB	195	};
25f311fa MB	196
dc691966 KK	197	static const struct regmap_config s2mps14_regmap_config = {
	198	.reg_bits = 8,
	199	.val_bits = 8,
	200
	201	.max_register = S2MPS14_REG_LDODSCH3,
	202	.volatile_reg = s2mps11_volatile,
	203	.cache_type = REGCACHE_FLAT,
	204	};
	205
00e2573d CC	206	static const struct regmap_config s2mpu02_regmap_config = {
	207	.reg_bits = 8,
	208	.val_bits = 8,
	209
	210	.max_register = S2MPU02_REG_DVSDATA,
	211	.volatile_reg = s2mpu02_volatile,
	212	.cache_type = REGCACHE_FLAT,
	213	};
	214
a30fffb0	215	static const struct regmap_config s5m8763_regmap_config = {
25f311fa MB	216	.reg_bits = 8,
	217	.val_bits = 8,
	218
	219	.max_register = S5M8763_REG_LBCNFG2,
6b845ba9 MB	220	.volatile_reg = s5m8763_volatile,
6b845ba9 MB	221	.cache_type = REGCACHE_FLAT,
25f311fa MB	222	};
25f311fa MB	223
a30fffb0	224	static const struct regmap_config s5m8767_regmap_config = {
25f311fa MB	225	.reg_bits = 8,
	226	.val_bits = 8,
	227
	228	.max_register = S5M8767_REG_LDO28CTRL,
6b845ba9 MB	229	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	230	.cache_type = REGCACHE_FLAT,
25f311fa	231	};
26aec009 ADK	232
	233	#ifdef CONFIG_OF
	234	/*
	235	* Only the common platform data elements for s5m8767 are parsed here from the
	236	* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
	237	* others have to parse their own platform data elements from device tree.
	238	*
	239	* The s5m8767 platform data structure is instantiated here and the drivers for
	240	* the sub-modules need not instantiate another instance while parsing their
	241	* platform data.
	242	*/
	243	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
	244	struct device *dev)
	245	{
	246	struct sec_platform_data *pd;
	247
	248	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
	249	if (!pd) {
	250	dev_err(dev, "could not allocate memory for pdata\n");
	251	return ERR_PTR(-ENOMEM);
	252	}
	253
	254	/*
	255	* ToDo: the 'wakeup' member in the platform data is more of a linux
	256	* specfic information. Hence, there is no binding for that yet and
	257	* not parsed here.
	258	*/
	259
	260	return pd;
	261	}
	262	#else
197bf856	263	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
26aec009 ADK	264	struct device *dev)
26aec009 ADK	265	{
005718c0	266	return NULL;
26aec009 ADK	267	}
	268	#endif
	269
8f695de5	270	static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c,
26aec009 ADK	271	const struct i2c_device_id *id)
	272	{
	273	#ifdef CONFIG_OF
	274	if (i2c->dev.of_node) {
	275	const struct of_device_id *match;
b6c1cb4d	276
26aec009	277	match = of_match_node(sec_dt_match, i2c->dev.of_node);
8f695de5	278	return (unsigned long)match->data;
26aec009 ADK	279	}
26aec009 ADK	280	#endif
8f695de5	281	return id->driver_data;
26aec009 ADK	282	}
26aec009 ADK	283
63063bfb	284	static int sec_pmic_probe(struct i2c_client *i2c,
0f5f7078 SK	285	const struct i2c_device_id *id)
0f5f7078 SK	286	{
334a41ce	287	struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
e349c910	288	const struct regmap_config *regmap;
54e8827d	289	const struct mfd_cell *sec_devs;
63063bfb	290	struct sec_pmic_dev *sec_pmic;
9549b5ff	291	unsigned long device_type;
54e8827d	292	int ret, num_sec_devs;
0f5f7078	293
63063bfb	294	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
621210e2	295	GFP_KERNEL);
63063bfb	296	if (sec_pmic == NULL)
0f5f7078 SK	297	return -ENOMEM;
0f5f7078 SK	298
63063bfb SK	299	i2c_set_clientdata(i2c, sec_pmic);
	300	sec_pmic->dev = &i2c->dev;
	301	sec_pmic->i2c = i2c;
	302	sec_pmic->irq = i2c->irq;
9549b5ff	303	device_type = sec_i2c_get_driver_data(i2c, id);
26aec009 ADK	304
	305	if (sec_pmic->dev->of_node) {
	306	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	307	if (IS_ERR(pdata)) {
	308	ret = PTR_ERR(pdata);
	309	return ret;
	310	}
9549b5ff	311	pdata->device_type = device_type;
26aec009	312	}
0f5f7078	313	if (pdata) {
63063bfb SK	314	sec_pmic->device_type = pdata->device_type;
	315	sec_pmic->ono = pdata->ono;
	316	sec_pmic->irq_base = pdata->irq_base;
	317	sec_pmic->wakeup = pdata->wakeup;
26aec009	318	sec_pmic->pdata = pdata;
0f5f7078 SK	319	}
0f5f7078 SK	320
25f311fa	321	switch (sec_pmic->device_type) {
ce24991e SK	322	case S2MPA01:
	323	regmap = &s2mpa01_regmap_config;
	324	break;
25f311fa MB	325	case S2MPS11X:
25f311fa MB	326	regmap = &s2mps11_regmap_config;
dc691966 KK	327	break;
	328	case S2MPS14X:
	329	regmap = &s2mps14_regmap_config;
25f311fa MB	330	break;
	331	case S5M8763X:
	332	regmap = &s5m8763_regmap_config;
	333	break;
	334	case S5M8767X:
	335	regmap = &s5m8767_regmap_config;
	336	break;
00e2573d CC	337	case S2MPU02:
	338	regmap = &s2mpu02_regmap_config;
	339	break;
25f311fa MB	340	default:
	341	regmap = &sec_regmap_config;
	342	break;
	343	}
	344
3e1e4a5f KK	345	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	346	if (IS_ERR(sec_pmic->regmap_pmic)) {
	347	ret = PTR_ERR(sec_pmic->regmap_pmic);
0f5f7078	348	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
61a2af30	349	ret);
1092e1c7	350	return ret;
0f5f7078 SK	351	}
0f5f7078 SK	352
c3ebb30a	353	if (pdata && pdata->cfg_pmic_irq)
0f5f7078 SK	354	pdata->cfg_pmic_irq();
0f5f7078 SK	355
63063bfb	356	sec_irq_init(sec_pmic);
0f5f7078	357
63063bfb	358	pm_runtime_set_active(sec_pmic->dev);
0f5f7078	359
63063bfb	360	switch (sec_pmic->device_type) {
88a1cfd6	361	case S5M8751X:
54e8827d CC	362	sec_devs = s5m8751_devs;
54e8827d CC	363	num_sec_devs = ARRAY_SIZE(s5m8751_devs);
88a1cfd6 SK	364	break;
88a1cfd6 SK	365	case S5M8763X:
54e8827d CC	366	sec_devs = s5m8763_devs;
54e8827d CC	367	num_sec_devs = ARRAY_SIZE(s5m8763_devs);
88a1cfd6 SK	368	break;
88a1cfd6 SK	369	case S5M8767X:
54e8827d CC	370	sec_devs = s5m8767_devs;
54e8827d CC	371	num_sec_devs = ARRAY_SIZE(s5m8767_devs);
88a1cfd6	372	break;
ce24991e	373	case S2MPA01:
54e8827d CC	374	sec_devs = s2mpa01_devs;
54e8827d CC	375	num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
ce24991e	376	break;
9b6d1343	377	case S2MPS11X:
54e8827d CC	378	sec_devs = s2mps11_devs;
54e8827d CC	379	num_sec_devs = ARRAY_SIZE(s2mps11_devs);
9b6d1343	380	break;
dc691966	381	case S2MPS14X:
54e8827d CC	382	sec_devs = s2mps14_devs;
	383	num_sec_devs = ARRAY_SIZE(s2mps14_devs);
	384	break;
	385	case S2MPU02:
	386	sec_devs = s2mpu02_devs;
	387	num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
dc691966	388	break;
88a1cfd6 SK	389	default:
	390	/* If this happens the probe function is problem */
	391	BUG();
	392	}
54e8827d CC	393	ret = mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL,
54e8827d CC	394	0, NULL);
15447a46	395	if (ret)
8c66eece	396	goto err_mfd;
0f5f7078	397
f6d6daaf KK	398	device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
f6d6daaf KK	399
0f5f7078 SK	400	return ret;
0f5f7078 SK	401
8c66eece	402	err_mfd:
63063bfb	403	sec_irq_exit(sec_pmic);
0f5f7078 SK	404	return ret;
	405	}
	406
63063bfb	407	static int sec_pmic_remove(struct i2c_client *i2c)
0f5f7078	408	{
63063bfb	409	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
0f5f7078	410
63063bfb SK	411	mfd_remove_devices(sec_pmic->dev);
63063bfb SK	412	sec_irq_exit(sec_pmic);
0f5f7078 SK	413	return 0;
	414	}
	415
8321bbf8	416	#ifdef CONFIG_PM_SLEEP
f6d6daaf KK	417	static int sec_pmic_suspend(struct device *dev)
	418	{
	419	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	420	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	421
360d15d6	422	if (device_may_wakeup(dev))
f6d6daaf	423	enable_irq_wake(sec_pmic->irq);
360d15d6 KK	424	/*
	425	* PMIC IRQ must be disabled during suspend for RTC alarm
	426	* to work properly.
	427	* When device is woken up from suspend, an
	428	* interrupt occurs before resuming I2C bus controller.
	429	* The interrupt is handled by regmap_irq_thread which tries
	430	* to read RTC registers. This read fails (I2C is still
	431	* suspended) and RTC Alarm interrupt is disabled.
	432	*/
	433	disable_irq(sec_pmic->irq);
f6d6daaf	434
b7cde707 CC	435	switch (sec_pmic->device_type) {
	436	case S2MPS14X:
	437	case S2MPU02:
	438	regulator_suspend_prepare(PM_SUSPEND_MEM);
	439	break;
	440	default:
	441	break;
	442	}
	443
f6d6daaf KK	444	return 0;
	445	}
	446
	447	static int sec_pmic_resume(struct device *dev)
	448	{
	449	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	450	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	451
360d15d6	452	if (device_may_wakeup(dev))
f6d6daaf	453	disable_irq_wake(sec_pmic->irq);
360d15d6	454	enable_irq(sec_pmic->irq);
f6d6daaf KK	455
	456	return 0;
	457	}
8321bbf8	458	#endif /* CONFIG_PM_SLEEP */
f6d6daaf KK	459
	460	static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
	461
63063bfb SK	462	static const struct i2c_device_id sec_pmic_id[] = {
63063bfb SK	463	{ "sec_pmic", 0 },
0f5f7078 SK	464	{ }
0f5f7078 SK	465	};
63063bfb	466	MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
0f5f7078	467
63063bfb	468	static struct i2c_driver sec_pmic_driver = {
0f5f7078	469	.driver = {
63063bfb	470	.name = "sec_pmic",
0f5f7078	471	.owner = THIS_MODULE,
f6d6daaf	472	.pm = &sec_pmic_pm_ops,
26aec009	473	.of_match_table = of_match_ptr(sec_dt_match),
0f5f7078	474	},
63063bfb SK	475	.probe = sec_pmic_probe,
	476	.remove = sec_pmic_remove,
	477	.id_table = sec_pmic_id,
0f5f7078 SK	478	};
0f5f7078 SK	479
63063bfb	480	static int __init sec_pmic_init(void)
0f5f7078	481	{
63063bfb	482	return i2c_add_driver(&sec_pmic_driver);
0f5f7078 SK	483	}
0f5f7078 SK	484
63063bfb	485	subsys_initcall(sec_pmic_init);
0f5f7078	486
63063bfb	487	static void __exit sec_pmic_exit(void)
0f5f7078	488	{
63063bfb	489	i2c_del_driver(&sec_pmic_driver);
0f5f7078	490	}
63063bfb	491	module_exit(sec_pmic_exit);
0f5f7078 SK	492
	493	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	494	MODULE_DESCRIPTION("Core support for the S5M MFD");
	495	MODULE_LICENSE("GPL");