[mirror_ubuntu-bionic-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/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",
		.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 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,
};

#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;
	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);

	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>
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	}, {
39fed00f TB	61	.name = "s5m8767-clk",
53c31b34	62	.of_compatible = "samsung,s5m8767-clk",
39fed00f	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	}, {
3134bcae YSB	70	.name = "s2mps11-clk",
53c31b34	71	.of_compatible = "samsung,s2mps11-clk",
3134bcae	72	}
9b6d1343 SK	73	};
9b6d1343 SK	74
dc691966 KK	75	static const struct mfd_cell s2mps14_devs[] = {
	76	{
	77	.name = "s2mps14-pmic",
	78	}, {
	79	.name = "s2mps14-rtc",
	80	}, {
	81	.name = "s2mps14-clk",
53c31b34	82	.of_compatible = "samsung,s2mps14-clk",
dc691966 KK	83	}
	84	};
	85
ce24991e SK	86	static const struct mfd_cell s2mpa01_devs[] = {
	87	{
	88	.name = "s2mpa01-pmic",
	89	},
	90	};
	91
54e8827d CC	92	static const struct mfd_cell s2mpu02_devs[] = {
	93	{ .name = "s2mpu02-pmic", },
	94	{ .name = "s2mpu02-rtc", },
	95	{
	96	.name = "s2mpu02-clk",
	97	.of_compatible = "samsung,s2mpu02-clk",
	98	}
	99	};
	100
26aec009	101	#ifdef CONFIG_OF
df20b7c5	102	static const struct of_device_id sec_dt_match[] = {
26aec009 ADK	103	{ .compatible = "samsung,s5m8767-pmic",
26aec009 ADK	104	.data = (void *)S5M8767X,
ce24991e SK	105	}, {
ce24991e SK	106	.compatible = "samsung,s2mps11-pmic",
aa32acad	107	.data = (void *)S2MPS11X,
ce24991e SK	108	}, {
ce24991e SK	109	.compatible = "samsung,s2mps14-pmic",
dc691966	110	.data = (void *)S2MPS14X,
ce24991e SK	111	}, {
	112	.compatible = "samsung,s2mpa01-pmic",
	113	.data = (void *)S2MPA01,
54e8827d CC	114	}, {
	115	.compatible = "samsung,s2mpu02-pmic",
	116	.data = (void *)S2MPU02,
ce24991e SK	117	}, {
ce24991e SK	118	/* Sentinel */
dc691966	119	},
26aec009 ADK	120	};
	121	#endif
	122
ce24991e SK	123	static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
	124	{
	125	switch (reg) {
	126	case S2MPA01_REG_INT1M:
	127	case S2MPA01_REG_INT2M:
	128	case S2MPA01_REG_INT3M:
	129	return false;
	130	default:
	131	return true;
	132	}
	133	}
	134
6b845ba9 MB	135	static bool s2mps11_volatile(struct device *dev, unsigned int reg)
	136	{
	137	switch (reg) {
	138	case S2MPS11_REG_INT1M:
	139	case S2MPS11_REG_INT2M:
	140	case S2MPS11_REG_INT3M:
	141	return false;
	142	default:
	143	return true;
	144	}
	145	}
	146
	147	static bool s5m8763_volatile(struct device *dev, unsigned int reg)
	148	{
	149	switch (reg) {
	150	case S5M8763_REG_IRQM1:
	151	case S5M8763_REG_IRQM2:
	152	case S5M8763_REG_IRQM3:
	153	case S5M8763_REG_IRQM4:
	154	return false;
	155	default:
	156	return true;
	157	}
	158	}
	159
a30fffb0	160	static const struct regmap_config sec_regmap_config = {
0f5f7078 SK	161	.reg_bits = 8,
	162	.val_bits = 8,
	163	};
	164
ce24991e SK	165	static const struct regmap_config s2mpa01_regmap_config = {
	166	.reg_bits = 8,
	167	.val_bits = 8,
	168
	169	.max_register = S2MPA01_REG_LDO_OVCB4,
	170	.volatile_reg = s2mpa01_volatile,
	171	.cache_type = REGCACHE_FLAT,
	172	};
	173
a30fffb0	174	static const struct regmap_config s2mps11_regmap_config = {
25f311fa MB	175	.reg_bits = 8,
	176	.val_bits = 8,
	177
	178	.max_register = S2MPS11_REG_L38CTRL,
6b845ba9 MB	179	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	180	.cache_type = REGCACHE_FLAT,
25f311fa MB	181	};
25f311fa MB	182
dc691966 KK	183	static const struct regmap_config s2mps14_regmap_config = {
	184	.reg_bits = 8,
	185	.val_bits = 8,
	186
	187	.max_register = S2MPS14_REG_LDODSCH3,
	188	.volatile_reg = s2mps11_volatile,
	189	.cache_type = REGCACHE_FLAT,
	190	};
	191
a30fffb0	192	static const struct regmap_config s5m8763_regmap_config = {
25f311fa MB	193	.reg_bits = 8,
	194	.val_bits = 8,
	195
	196	.max_register = S5M8763_REG_LBCNFG2,
6b845ba9 MB	197	.volatile_reg = s5m8763_volatile,
6b845ba9 MB	198	.cache_type = REGCACHE_FLAT,
25f311fa MB	199	};
25f311fa MB	200
a30fffb0	201	static const struct regmap_config s5m8767_regmap_config = {
25f311fa MB	202	.reg_bits = 8,
	203	.val_bits = 8,
	204
	205	.max_register = S5M8767_REG_LDO28CTRL,
6b845ba9 MB	206	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	207	.cache_type = REGCACHE_FLAT,
25f311fa	208	};
26aec009 ADK	209
	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);
e349c910	264	const struct regmap_config *regmap;
54e8827d	265	const struct mfd_cell *sec_devs;
63063bfb	266	struct sec_pmic_dev *sec_pmic;
9549b5ff	267	unsigned long device_type;
54e8827d	268	int ret, num_sec_devs;
0f5f7078	269
63063bfb	270	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
621210e2	271	GFP_KERNEL);
63063bfb	272	if (sec_pmic == NULL)
0f5f7078 SK	273	return -ENOMEM;
0f5f7078 SK	274
63063bfb SK	275	i2c_set_clientdata(i2c, sec_pmic);
	276	sec_pmic->dev = &i2c->dev;
	277	sec_pmic->i2c = i2c;
	278	sec_pmic->irq = i2c->irq;
9549b5ff	279	device_type = sec_i2c_get_driver_data(i2c, id);
26aec009 ADK	280
	281	if (sec_pmic->dev->of_node) {
	282	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	283	if (IS_ERR(pdata)) {
	284	ret = PTR_ERR(pdata);
	285	return ret;
	286	}
9549b5ff	287	pdata->device_type = device_type;
26aec009	288	}
0f5f7078	289	if (pdata) {
63063bfb SK	290	sec_pmic->device_type = pdata->device_type;
	291	sec_pmic->ono = pdata->ono;
	292	sec_pmic->irq_base = pdata->irq_base;
	293	sec_pmic->wakeup = pdata->wakeup;
26aec009	294	sec_pmic->pdata = pdata;
0f5f7078 SK	295	}
0f5f7078 SK	296
25f311fa	297	switch (sec_pmic->device_type) {
ce24991e SK	298	case S2MPA01:
	299	regmap = &s2mpa01_regmap_config;
	300	break;
25f311fa MB	301	case S2MPS11X:
25f311fa MB	302	regmap = &s2mps11_regmap_config;
dc691966 KK	303	break;
	304	case S2MPS14X:
	305	regmap = &s2mps14_regmap_config;
25f311fa MB	306	break;
	307	case S5M8763X:
	308	regmap = &s5m8763_regmap_config;
	309	break;
	310	case S5M8767X:
	311	regmap = &s5m8767_regmap_config;
	312	break;
	313	default:
	314	regmap = &sec_regmap_config;
	315	break;
	316	}
	317
3e1e4a5f KK	318	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	319	if (IS_ERR(sec_pmic->regmap_pmic)) {
	320	ret = PTR_ERR(sec_pmic->regmap_pmic);
0f5f7078	321	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
61a2af30	322	ret);
1092e1c7	323	return ret;
0f5f7078 SK	324	}
0f5f7078 SK	325
c3ebb30a	326	if (pdata && pdata->cfg_pmic_irq)
0f5f7078 SK	327	pdata->cfg_pmic_irq();
0f5f7078 SK	328
63063bfb	329	sec_irq_init(sec_pmic);
0f5f7078	330
63063bfb	331	pm_runtime_set_active(sec_pmic->dev);
0f5f7078	332
63063bfb	333	switch (sec_pmic->device_type) {
88a1cfd6	334	case S5M8751X:
54e8827d CC	335	sec_devs = s5m8751_devs;
54e8827d CC	336	num_sec_devs = ARRAY_SIZE(s5m8751_devs);
88a1cfd6 SK	337	break;
88a1cfd6 SK	338	case S5M8763X:
54e8827d CC	339	sec_devs = s5m8763_devs;
54e8827d CC	340	num_sec_devs = ARRAY_SIZE(s5m8763_devs);
88a1cfd6 SK	341	break;
88a1cfd6 SK	342	case S5M8767X:
54e8827d CC	343	sec_devs = s5m8767_devs;
54e8827d CC	344	num_sec_devs = ARRAY_SIZE(s5m8767_devs);
88a1cfd6	345	break;
ce24991e	346	case S2MPA01:
54e8827d CC	347	sec_devs = s2mpa01_devs;
54e8827d CC	348	num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
ce24991e	349	break;
9b6d1343	350	case S2MPS11X:
54e8827d CC	351	sec_devs = s2mps11_devs;
54e8827d CC	352	num_sec_devs = ARRAY_SIZE(s2mps11_devs);
9b6d1343	353	break;
dc691966	354	case S2MPS14X:
54e8827d CC	355	sec_devs = s2mps14_devs;
	356	num_sec_devs = ARRAY_SIZE(s2mps14_devs);
	357	break;
	358	case S2MPU02:
	359	sec_devs = s2mpu02_devs;
	360	num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
dc691966	361	break;
88a1cfd6 SK	362	default:
	363	/* If this happens the probe function is problem */
	364	BUG();
	365	}
54e8827d CC	366	ret = mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL,
54e8827d CC	367	0, NULL);
15447a46	368	if (ret)
8c66eece	369	goto err_mfd;
0f5f7078	370
f6d6daaf KK	371	device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
f6d6daaf KK	372
0f5f7078 SK	373	return ret;
0f5f7078 SK	374
8c66eece	375	err_mfd:
63063bfb	376	sec_irq_exit(sec_pmic);
0f5f7078 SK	377	return ret;
	378	}
	379
63063bfb	380	static int sec_pmic_remove(struct i2c_client *i2c)
0f5f7078	381	{
63063bfb	382	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
0f5f7078	383
63063bfb SK	384	mfd_remove_devices(sec_pmic->dev);
63063bfb SK	385	sec_irq_exit(sec_pmic);
0f5f7078 SK	386	return 0;
	387	}
	388
8321bbf8	389	#ifdef CONFIG_PM_SLEEP
f6d6daaf KK	390	static int sec_pmic_suspend(struct device *dev)
	391	{
	392	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	393	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	394
360d15d6	395	if (device_may_wakeup(dev))
f6d6daaf	396	enable_irq_wake(sec_pmic->irq);
360d15d6 KK	397	/*
	398	* PMIC IRQ must be disabled during suspend for RTC alarm
	399	* to work properly.
	400	* When device is woken up from suspend, an
	401	* interrupt occurs before resuming I2C bus controller.
	402	* The interrupt is handled by regmap_irq_thread which tries
	403	* to read RTC registers. This read fails (I2C is still
	404	* suspended) and RTC Alarm interrupt is disabled.
	405	*/
	406	disable_irq(sec_pmic->irq);
f6d6daaf KK	407
	408	return 0;
	409	}
	410
	411	static int sec_pmic_resume(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
360d15d6	416	if (device_may_wakeup(dev))
f6d6daaf	417	disable_irq_wake(sec_pmic->irq);
360d15d6	418	enable_irq(sec_pmic->irq);
f6d6daaf KK	419
	420	return 0;
	421	}
8321bbf8	422	#endif /* CONFIG_PM_SLEEP */
f6d6daaf KK	423
	424	static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
	425
63063bfb SK	426	static const struct i2c_device_id sec_pmic_id[] = {
63063bfb SK	427	{ "sec_pmic", 0 },
0f5f7078 SK	428	{ }
0f5f7078 SK	429	};
63063bfb	430	MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
0f5f7078	431
63063bfb	432	static struct i2c_driver sec_pmic_driver = {
0f5f7078	433	.driver = {
63063bfb	434	.name = "sec_pmic",
0f5f7078	435	.owner = THIS_MODULE,
f6d6daaf	436	.pm = &sec_pmic_pm_ops,
26aec009	437	.of_match_table = of_match_ptr(sec_dt_match),
0f5f7078	438	},
63063bfb SK	439	.probe = sec_pmic_probe,
	440	.remove = sec_pmic_remove,
	441	.id_table = sec_pmic_id,
0f5f7078 SK	442	};
0f5f7078 SK	443
63063bfb	444	static int __init sec_pmic_init(void)
0f5f7078	445	{
63063bfb	446	return i2c_add_driver(&sec_pmic_driver);
0f5f7078 SK	447	}
0f5f7078 SK	448
63063bfb	449	subsys_initcall(sec_pmic_init);
0f5f7078	450
63063bfb	451	static void __exit sec_pmic_exit(void)
0f5f7078	452	{
63063bfb	453	i2c_del_driver(&sec_pmic_driver);
0f5f7078	454	}
63063bfb	455	module_exit(sec_pmic_exit);
0f5f7078 SK	456
	457	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	458	MODULE_DESCRIPTION("Core support for the S5M MFD");
	459	MODULE_LICENSE("GPL");