[mirror_ubuntu-hirsute-kernel.git] / drivers / mfd / sec-core.c

/*
 * sec-core.c
 *
 * Copyright (c) 2012 Samsung Electronics Co., Ltd
 *              http://www.samsung.com
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/samsung/core.h>
#include <linux/mfd/samsung/irq.h>
#include <linux/mfd/samsung/s2mpa01.h>
#include <linux/mfd/samsung/s2mps11.h>
#include <linux/mfd/samsung/s2mps13.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/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 s2mps13_devs[] = {
	{ .name = "s2mps13-pmic", },
	{ .name = "s2mps13-rtc", },
	{
		.name = "s2mps13-clk",
		.of_compatible = "samsung,s2mps13-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,s2mps13-pmic",
		.data = (void *)S2MPS13X,
	}, {
		.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 s2mps13_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S2MPS13_REG_LDODSCH5,
	.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)
		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->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 S2MPS13X:
		regmap = &s2mps13_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 S2MPS13X:
		sec_devs = s2mps13_devs;
		num_sec_devs = ARRAY_SIZE(s2mps13_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>
76b9840b	30	#include <linux/mfd/samsung/s2mps13.h>
dc691966	31	#include <linux/mfd/samsung/s2mps14.h>
00e2573d	32	#include <linux/mfd/samsung/s2mpu02.h>
25f311fa MB	33	#include <linux/mfd/samsung/s5m8763.h>
25f311fa MB	34	#include <linux/mfd/samsung/s5m8767.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
3bc2ee91 CC	77	static const struct mfd_cell s2mps13_devs[] = {
	78	{ .name = "s2mps13-pmic", },
	79	{ .name = "s2mps13-rtc", },
	80	{
	81	.name = "s2mps13-clk",
	82	.of_compatible = "samsung,s2mps13-clk",
	83	},
	84	};
	85
dc691966 KK	86	static const struct mfd_cell s2mps14_devs[] = {
	87	{
	88	.name = "s2mps14-pmic",
	89	}, {
	90	.name = "s2mps14-rtc",
	91	}, {
	92	.name = "s2mps14-clk",
53c31b34	93	.of_compatible = "samsung,s2mps14-clk",
dc691966 KK	94	}
	95	};
	96
ce24991e SK	97	static const struct mfd_cell s2mpa01_devs[] = {
	98	{
	99	.name = "s2mpa01-pmic",
	100	},
	101	};
	102
54e8827d CC	103	static const struct mfd_cell s2mpu02_devs[] = {
	104	{ .name = "s2mpu02-pmic", },
	105	{ .name = "s2mpu02-rtc", },
	106	{
	107	.name = "s2mpu02-clk",
	108	.of_compatible = "samsung,s2mpu02-clk",
	109	}
	110	};
	111
26aec009	112	#ifdef CONFIG_OF
df20b7c5	113	static const struct of_device_id sec_dt_match[] = {
26aec009 ADK	114	{ .compatible = "samsung,s5m8767-pmic",
26aec009 ADK	115	.data = (void *)S5M8767X,
ce24991e SK	116	}, {
ce24991e SK	117	.compatible = "samsung,s2mps11-pmic",
aa32acad	118	.data = (void *)S2MPS11X,
3bc2ee91 CC	119	}, {
	120	.compatible = "samsung,s2mps13-pmic",
	121	.data = (void *)S2MPS13X,
ce24991e SK	122	}, {
ce24991e SK	123	.compatible = "samsung,s2mps14-pmic",
dc691966	124	.data = (void *)S2MPS14X,
ce24991e SK	125	}, {
	126	.compatible = "samsung,s2mpa01-pmic",
	127	.data = (void *)S2MPA01,
54e8827d CC	128	}, {
	129	.compatible = "samsung,s2mpu02-pmic",
	130	.data = (void *)S2MPU02,
ce24991e SK	131	}, {
ce24991e SK	132	/* Sentinel */
dc691966	133	},
26aec009 ADK	134	};
	135	#endif
	136
ce24991e SK	137	static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
	138	{
	139	switch (reg) {
	140	case S2MPA01_REG_INT1M:
	141	case S2MPA01_REG_INT2M:
	142	case S2MPA01_REG_INT3M:
	143	return false;
	144	default:
	145	return true;
	146	}
	147	}
	148
6b845ba9 MB	149	static bool s2mps11_volatile(struct device *dev, unsigned int reg)
	150	{
	151	switch (reg) {
	152	case S2MPS11_REG_INT1M:
	153	case S2MPS11_REG_INT2M:
	154	case S2MPS11_REG_INT3M:
	155	return false;
	156	default:
	157	return true;
	158	}
	159	}
	160
00e2573d CC	161	static bool s2mpu02_volatile(struct device *dev, unsigned int reg)
	162	{
	163	switch (reg) {
	164	case S2MPU02_REG_INT1M:
	165	case S2MPU02_REG_INT2M:
	166	case S2MPU02_REG_INT3M:
	167	return false;
	168	default:
	169	return true;
	170	}
	171	}
	172
6b845ba9 MB	173	static bool s5m8763_volatile(struct device *dev, unsigned int reg)
	174	{
	175	switch (reg) {
	176	case S5M8763_REG_IRQM1:
	177	case S5M8763_REG_IRQM2:
	178	case S5M8763_REG_IRQM3:
	179	case S5M8763_REG_IRQM4:
	180	return false;
	181	default:
	182	return true;
	183	}
	184	}
	185
a30fffb0	186	static const struct regmap_config sec_regmap_config = {
0f5f7078 SK	187	.reg_bits = 8,
	188	.val_bits = 8,
	189	};
	190
ce24991e SK	191	static const struct regmap_config s2mpa01_regmap_config = {
	192	.reg_bits = 8,
	193	.val_bits = 8,
	194
	195	.max_register = S2MPA01_REG_LDO_OVCB4,
	196	.volatile_reg = s2mpa01_volatile,
	197	.cache_type = REGCACHE_FLAT,
	198	};
	199
a30fffb0	200	static const struct regmap_config s2mps11_regmap_config = {
25f311fa MB	201	.reg_bits = 8,
	202	.val_bits = 8,
	203
	204	.max_register = S2MPS11_REG_L38CTRL,
6b845ba9 MB	205	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	206	.cache_type = REGCACHE_FLAT,
25f311fa MB	207	};
25f311fa MB	208
76b9840b CC	209	static const struct regmap_config s2mps13_regmap_config = {
	210	.reg_bits = 8,
	211	.val_bits = 8,
	212
	213	.max_register = S2MPS13_REG_LDODSCH5,
	214	.volatile_reg = s2mps11_volatile,
	215	.cache_type = REGCACHE_FLAT,
	216	};
	217
dc691966 KK	218	static const struct regmap_config s2mps14_regmap_config = {
	219	.reg_bits = 8,
	220	.val_bits = 8,
	221
	222	.max_register = S2MPS14_REG_LDODSCH3,
	223	.volatile_reg = s2mps11_volatile,
	224	.cache_type = REGCACHE_FLAT,
	225	};
	226
00e2573d CC	227	static const struct regmap_config s2mpu02_regmap_config = {
	228	.reg_bits = 8,
	229	.val_bits = 8,
	230
	231	.max_register = S2MPU02_REG_DVSDATA,
	232	.volatile_reg = s2mpu02_volatile,
	233	.cache_type = REGCACHE_FLAT,
	234	};
	235
a30fffb0	236	static const struct regmap_config s5m8763_regmap_config = {
25f311fa MB	237	.reg_bits = 8,
	238	.val_bits = 8,
	239
	240	.max_register = S5M8763_REG_LBCNFG2,
6b845ba9 MB	241	.volatile_reg = s5m8763_volatile,
6b845ba9 MB	242	.cache_type = REGCACHE_FLAT,
25f311fa MB	243	};
25f311fa MB	244
a30fffb0	245	static const struct regmap_config s5m8767_regmap_config = {
25f311fa MB	246	.reg_bits = 8,
	247	.val_bits = 8,
	248
	249	.max_register = S5M8767_REG_LDO28CTRL,
6b845ba9 MB	250	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	251	.cache_type = REGCACHE_FLAT,
25f311fa	252	};
26aec009 ADK	253
	254	#ifdef CONFIG_OF
	255	/*
	256	* Only the common platform data elements for s5m8767 are parsed here from the
	257	* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
	258	* others have to parse their own platform data elements from device tree.
	259	*
	260	* The s5m8767 platform data structure is instantiated here and the drivers for
	261	* the sub-modules need not instantiate another instance while parsing their
	262	* platform data.
	263	*/
	264	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
	265	struct device *dev)
	266	{
	267	struct sec_platform_data *pd;
	268
	269	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
82a00c49	270	if (!pd)
26aec009	271	return ERR_PTR(-ENOMEM);
26aec009 ADK	272
	273	/*
	274	* ToDo: the 'wakeup' member in the platform data is more of a linux
	275	* specfic information. Hence, there is no binding for that yet and
	276	* not parsed here.
	277	*/
	278
	279	return pd;
	280	}
	281	#else
197bf856	282	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
26aec009 ADK	283	struct device *dev)
26aec009 ADK	284	{
005718c0	285	return NULL;
26aec009 ADK	286	}
	287	#endif
	288
8f695de5	289	static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c,
26aec009 ADK	290	const struct i2c_device_id *id)
	291	{
	292	#ifdef CONFIG_OF
	293	if (i2c->dev.of_node) {
	294	const struct of_device_id *match;
b6c1cb4d	295
26aec009	296	match = of_match_node(sec_dt_match, i2c->dev.of_node);
8f695de5	297	return (unsigned long)match->data;
26aec009 ADK	298	}
26aec009 ADK	299	#endif
8f695de5	300	return id->driver_data;
26aec009 ADK	301	}
26aec009 ADK	302
63063bfb	303	static int sec_pmic_probe(struct i2c_client *i2c,
0f5f7078 SK	304	const struct i2c_device_id *id)
0f5f7078 SK	305	{
334a41ce	306	struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
e349c910	307	const struct regmap_config *regmap;
54e8827d	308	const struct mfd_cell *sec_devs;
63063bfb	309	struct sec_pmic_dev *sec_pmic;
9549b5ff	310	unsigned long device_type;
54e8827d	311	int ret, num_sec_devs;
0f5f7078	312
63063bfb	313	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
621210e2	314	GFP_KERNEL);
63063bfb	315	if (sec_pmic == NULL)
0f5f7078 SK	316	return -ENOMEM;
0f5f7078 SK	317
63063bfb SK	318	i2c_set_clientdata(i2c, sec_pmic);
	319	sec_pmic->dev = &i2c->dev;
	320	sec_pmic->i2c = i2c;
	321	sec_pmic->irq = i2c->irq;
9549b5ff	322	device_type = sec_i2c_get_driver_data(i2c, id);
26aec009 ADK	323
	324	if (sec_pmic->dev->of_node) {
	325	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	326	if (IS_ERR(pdata)) {
	327	ret = PTR_ERR(pdata);
	328	return ret;
	329	}
9549b5ff	330	pdata->device_type = device_type;
26aec009	331	}
0f5f7078	332	if (pdata) {
63063bfb	333	sec_pmic->device_type = pdata->device_type;
63063bfb SK	334	sec_pmic->irq_base = pdata->irq_base;
63063bfb SK	335	sec_pmic->wakeup = pdata->wakeup;
26aec009	336	sec_pmic->pdata = pdata;
0f5f7078 SK	337	}
0f5f7078 SK	338
25f311fa	339	switch (sec_pmic->device_type) {
ce24991e SK	340	case S2MPA01:
	341	regmap = &s2mpa01_regmap_config;
	342	break;
25f311fa MB	343	case S2MPS11X:
25f311fa MB	344	regmap = &s2mps11_regmap_config;
dc691966	345	break;
76b9840b CC	346	case S2MPS13X:
	347	regmap = &s2mps13_regmap_config;
	348	break;
dc691966 KK	349	case S2MPS14X:
dc691966 KK	350	regmap = &s2mps14_regmap_config;
25f311fa MB	351	break;
	352	case S5M8763X:
	353	regmap = &s5m8763_regmap_config;
	354	break;
	355	case S5M8767X:
	356	regmap = &s5m8767_regmap_config;
	357	break;
00e2573d CC	358	case S2MPU02:
	359	regmap = &s2mpu02_regmap_config;
	360	break;
25f311fa MB	361	default:
	362	regmap = &sec_regmap_config;
	363	break;
	364	}
	365
3e1e4a5f KK	366	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	367	if (IS_ERR(sec_pmic->regmap_pmic)) {
	368	ret = PTR_ERR(sec_pmic->regmap_pmic);
0f5f7078	369	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
61a2af30	370	ret);
1092e1c7	371	return ret;
0f5f7078 SK	372	}
0f5f7078 SK	373
c3ebb30a	374	if (pdata && pdata->cfg_pmic_irq)
0f5f7078 SK	375	pdata->cfg_pmic_irq();
0f5f7078 SK	376
63063bfb	377	sec_irq_init(sec_pmic);
0f5f7078	378
63063bfb	379	pm_runtime_set_active(sec_pmic->dev);
0f5f7078	380
63063bfb	381	switch (sec_pmic->device_type) {
88a1cfd6	382	case S5M8751X:
54e8827d CC	383	sec_devs = s5m8751_devs;
54e8827d CC	384	num_sec_devs = ARRAY_SIZE(s5m8751_devs);
88a1cfd6 SK	385	break;
88a1cfd6 SK	386	case S5M8763X:
54e8827d CC	387	sec_devs = s5m8763_devs;
54e8827d CC	388	num_sec_devs = ARRAY_SIZE(s5m8763_devs);
88a1cfd6 SK	389	break;
88a1cfd6 SK	390	case S5M8767X:
54e8827d CC	391	sec_devs = s5m8767_devs;
54e8827d CC	392	num_sec_devs = ARRAY_SIZE(s5m8767_devs);
88a1cfd6	393	break;
ce24991e	394	case S2MPA01:
54e8827d CC	395	sec_devs = s2mpa01_devs;
54e8827d CC	396	num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
ce24991e	397	break;
9b6d1343	398	case S2MPS11X:
54e8827d CC	399	sec_devs = s2mps11_devs;
54e8827d CC	400	num_sec_devs = ARRAY_SIZE(s2mps11_devs);
9b6d1343	401	break;
3bc2ee91 CC	402	case S2MPS13X:
	403	sec_devs = s2mps13_devs;
	404	num_sec_devs = ARRAY_SIZE(s2mps13_devs);
	405	break;
dc691966	406	case S2MPS14X:
54e8827d CC	407	sec_devs = s2mps14_devs;
	408	num_sec_devs = ARRAY_SIZE(s2mps14_devs);
	409	break;
	410	case S2MPU02:
	411	sec_devs = s2mpu02_devs;
	412	num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
dc691966	413	break;
88a1cfd6 SK	414	default:
	415	/* If this happens the probe function is problem */
	416	BUG();
	417	}
54e8827d CC	418	ret = mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL,
54e8827d CC	419	0, NULL);
15447a46	420	if (ret)
8c66eece	421	goto err_mfd;
0f5f7078	422
f6d6daaf KK	423	device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
f6d6daaf KK	424
0f5f7078 SK	425	return ret;
0f5f7078 SK	426
8c66eece	427	err_mfd:
63063bfb	428	sec_irq_exit(sec_pmic);
0f5f7078 SK	429	return ret;
	430	}
	431
63063bfb	432	static int sec_pmic_remove(struct i2c_client *i2c)
0f5f7078	433	{
63063bfb	434	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
0f5f7078	435
63063bfb SK	436	mfd_remove_devices(sec_pmic->dev);
63063bfb SK	437	sec_irq_exit(sec_pmic);
0f5f7078 SK	438	return 0;
	439	}
	440
8321bbf8	441	#ifdef CONFIG_PM_SLEEP
f6d6daaf KK	442	static int sec_pmic_suspend(struct device *dev)
	443	{
	444	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	445	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	446
360d15d6	447	if (device_may_wakeup(dev))
f6d6daaf	448	enable_irq_wake(sec_pmic->irq);
360d15d6 KK	449	/*
	450	* PMIC IRQ must be disabled during suspend for RTC alarm
	451	* to work properly.
	452	* When device is woken up from suspend, an
	453	* interrupt occurs before resuming I2C bus controller.
	454	* The interrupt is handled by regmap_irq_thread which tries
	455	* to read RTC registers. This read fails (I2C is still
	456	* suspended) and RTC Alarm interrupt is disabled.
	457	*/
	458	disable_irq(sec_pmic->irq);
f6d6daaf KK	459
	460	return 0;
	461	}
	462
	463	static int sec_pmic_resume(struct device *dev)
	464	{
	465	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	466	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	467
360d15d6	468	if (device_may_wakeup(dev))
f6d6daaf	469	disable_irq_wake(sec_pmic->irq);
360d15d6	470	enable_irq(sec_pmic->irq);
f6d6daaf KK	471
	472	return 0;
	473	}
8321bbf8	474	#endif /* CONFIG_PM_SLEEP */
f6d6daaf KK	475
	476	static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
	477
63063bfb SK	478	static const struct i2c_device_id sec_pmic_id[] = {
63063bfb SK	479	{ "sec_pmic", 0 },
0f5f7078 SK	480	{ }
0f5f7078 SK	481	};
63063bfb	482	MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
0f5f7078	483
63063bfb	484	static struct i2c_driver sec_pmic_driver = {
0f5f7078	485	.driver = {
63063bfb	486	.name = "sec_pmic",
0f5f7078	487	.owner = THIS_MODULE,
f6d6daaf	488	.pm = &sec_pmic_pm_ops,
26aec009	489	.of_match_table = of_match_ptr(sec_dt_match),
0f5f7078	490	},
63063bfb SK	491	.probe = sec_pmic_probe,
	492	.remove = sec_pmic_remove,
	493	.id_table = sec_pmic_id,
0f5f7078 SK	494	};
0f5f7078 SK	495
63063bfb	496	static int __init sec_pmic_init(void)
0f5f7078	497	{
63063bfb	498	return i2c_add_driver(&sec_pmic_driver);
0f5f7078 SK	499	}
0f5f7078 SK	500
63063bfb	501	subsys_initcall(sec_pmic_init);
0f5f7078	502
63063bfb	503	static void __exit sec_pmic_exit(void)
0f5f7078	504	{
63063bfb	505	i2c_del_driver(&sec_pmic_driver);
0f5f7078	506	}
63063bfb	507	module_exit(sec_pmic_exit);
0f5f7078 SK	508
	509	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	510	MODULE_DESCRIPTION("Core support for the S5M MFD");
	511	MODULE_LICENSE("GPL");