[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/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 = "s2mps14-rtc",
	}, {
		.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",
	},
};

#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,
};

static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic)
{
	unsigned int val;

	/* For each device type, the REG_ID is always the first register */
	if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val))
		dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val);
}

static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic)
{
	int err;

	if (sec_pmic->device_type != S2MPS13X)
		return;

	if (sec_pmic->pdata->disable_wrstbi) {
		/*
		 * If WRSTBI pin is pulled down this feature must be disabled
		 * because each Suspend to RAM will trigger buck voltage reset
		 * to default values.
		 */
		err = regmap_update_bits(sec_pmic->regmap_pmic,
					 S2MPS13_REG_WRSTBI,
					 S2MPS13_REG_WRSTBI_MASK, 0x0);
		if (err)
			dev_warn(sec_pmic->dev,
				 "Cannot initialize WRSTBI config: %d\n",
				 err);
	}
}

#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.
	 */

	pd->manual_poweroff = of_property_read_bool(dev->of_node,
						"samsung,s2mps11-acokb-ground");
	pd->disable_wrstbi = of_property_read_bool(dev->of_node,
						"samsung,s2mps11-wrstbi-ground");
	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);
	sec_pmic_configure(sec_pmic);
	sec_pmic_dump_rev(sec_pmic);

	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;
}

static void sec_pmic_shutdown(struct i2c_client *i2c)
{
	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	unsigned int reg, mask;

	if (!sec_pmic->pdata->manual_poweroff)
		return;

	switch (sec_pmic->device_type) {
	case S2MPS11X:
		reg = S2MPS11_REG_CTRL1;
		mask = S2MPS11_CTRL1_PWRHOLD_MASK;
		break;
	default:
		/*
		 * Currently only one board with S2MPS11 needs this, so just
		 * ignore the rest.
		 */
		dev_warn(sec_pmic->dev,
			"Unsupported device %lu for manual power off\n",
			sec_pmic->device_type);
		return;
	}

	regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 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",
		   .pm = &sec_pmic_pm_ops,
		   .of_match_table = of_match_ptr(sec_dt_match),
	},
	.probe = sec_pmic_probe,
	.remove = sec_pmic_remove,
	.shutdown = sec_pmic_shutdown,
	.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",
eea2e596 KK	71	}, {
eea2e596 KK	72	.name = "s2mps14-rtc",
3134bcae YSB	73	}, {
3134bcae YSB	74	.name = "s2mps11-clk",
53c31b34	75	.of_compatible = "samsung,s2mps11-clk",
3134bcae	76	}
9b6d1343 SK	77	};
9b6d1343 SK	78
3bc2ee91 CC	79	static const struct mfd_cell s2mps13_devs[] = {
	80	{ .name = "s2mps13-pmic", },
	81	{ .name = "s2mps13-rtc", },
	82	{
	83	.name = "s2mps13-clk",
	84	.of_compatible = "samsung,s2mps13-clk",
	85	},
	86	};
	87
dc691966 KK	88	static const struct mfd_cell s2mps14_devs[] = {
	89	{
	90	.name = "s2mps14-pmic",
	91	}, {
	92	.name = "s2mps14-rtc",
	93	}, {
	94	.name = "s2mps14-clk",
53c31b34	95	.of_compatible = "samsung,s2mps14-clk",
dc691966 KK	96	}
	97	};
	98
ce24991e SK	99	static const struct mfd_cell s2mpa01_devs[] = {
	100	{
	101	.name = "s2mpa01-pmic",
	102	},
	103	};
	104
54e8827d	105	static const struct mfd_cell s2mpu02_devs[] = {
54e8827d	106	{
644a3746 KK	107	.name = "s2mpu02-pmic",
644a3746 KK	108	},
54e8827d CC	109	};
54e8827d CC	110
26aec009	111	#ifdef CONFIG_OF
df20b7c5	112	static const struct of_device_id sec_dt_match[] = {
26aec009 ADK	113	{ .compatible = "samsung,s5m8767-pmic",
26aec009 ADK	114	.data = (void *)S5M8767X,
ce24991e SK	115	}, {
ce24991e SK	116	.compatible = "samsung,s2mps11-pmic",
aa32acad	117	.data = (void *)S2MPS11X,
3bc2ee91 CC	118	}, {
	119	.compatible = "samsung,s2mps13-pmic",
	120	.data = (void *)S2MPS13X,
ce24991e SK	121	}, {
ce24991e SK	122	.compatible = "samsung,s2mps14-pmic",
dc691966	123	.data = (void *)S2MPS14X,
ce24991e SK	124	}, {
	125	.compatible = "samsung,s2mpa01-pmic",
	126	.data = (void *)S2MPA01,
54e8827d CC	127	}, {
	128	.compatible = "samsung,s2mpu02-pmic",
	129	.data = (void *)S2MPU02,
ce24991e SK	130	}, {
ce24991e SK	131	/* Sentinel */
dc691966	132	},
26aec009 ADK	133	};
	134	#endif
	135
ce24991e SK	136	static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
	137	{
	138	switch (reg) {
	139	case S2MPA01_REG_INT1M:
	140	case S2MPA01_REG_INT2M:
	141	case S2MPA01_REG_INT3M:
	142	return false;
	143	default:
	144	return true;
	145	}
	146	}
	147
6b845ba9 MB	148	static bool s2mps11_volatile(struct device *dev, unsigned int reg)
	149	{
	150	switch (reg) {
	151	case S2MPS11_REG_INT1M:
	152	case S2MPS11_REG_INT2M:
	153	case S2MPS11_REG_INT3M:
	154	return false;
	155	default:
	156	return true;
	157	}
	158	}
	159
00e2573d CC	160	static bool s2mpu02_volatile(struct device *dev, unsigned int reg)
	161	{
	162	switch (reg) {
	163	case S2MPU02_REG_INT1M:
	164	case S2MPU02_REG_INT2M:
	165	case S2MPU02_REG_INT3M:
	166	return false;
	167	default:
	168	return true;
	169	}
	170	}
	171
6b845ba9 MB	172	static bool s5m8763_volatile(struct device *dev, unsigned int reg)
	173	{
	174	switch (reg) {
	175	case S5M8763_REG_IRQM1:
	176	case S5M8763_REG_IRQM2:
	177	case S5M8763_REG_IRQM3:
	178	case S5M8763_REG_IRQM4:
	179	return false;
	180	default:
	181	return true;
	182	}
	183	}
	184
a30fffb0	185	static const struct regmap_config sec_regmap_config = {
0f5f7078 SK	186	.reg_bits = 8,
	187	.val_bits = 8,
	188	};
	189
ce24991e SK	190	static const struct regmap_config s2mpa01_regmap_config = {
	191	.reg_bits = 8,
	192	.val_bits = 8,
	193
	194	.max_register = S2MPA01_REG_LDO_OVCB4,
	195	.volatile_reg = s2mpa01_volatile,
	196	.cache_type = REGCACHE_FLAT,
	197	};
	198
a30fffb0	199	static const struct regmap_config s2mps11_regmap_config = {
25f311fa MB	200	.reg_bits = 8,
	201	.val_bits = 8,
	202
	203	.max_register = S2MPS11_REG_L38CTRL,
6b845ba9 MB	204	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	205	.cache_type = REGCACHE_FLAT,
25f311fa MB	206	};
25f311fa MB	207
76b9840b CC	208	static const struct regmap_config s2mps13_regmap_config = {
	209	.reg_bits = 8,
	210	.val_bits = 8,
	211
	212	.max_register = S2MPS13_REG_LDODSCH5,
	213	.volatile_reg = s2mps11_volatile,
	214	.cache_type = REGCACHE_FLAT,
	215	};
	216
dc691966 KK	217	static const struct regmap_config s2mps14_regmap_config = {
	218	.reg_bits = 8,
	219	.val_bits = 8,
	220
	221	.max_register = S2MPS14_REG_LDODSCH3,
	222	.volatile_reg = s2mps11_volatile,
	223	.cache_type = REGCACHE_FLAT,
	224	};
	225
00e2573d CC	226	static const struct regmap_config s2mpu02_regmap_config = {
	227	.reg_bits = 8,
	228	.val_bits = 8,
	229
	230	.max_register = S2MPU02_REG_DVSDATA,
	231	.volatile_reg = s2mpu02_volatile,
	232	.cache_type = REGCACHE_FLAT,
	233	};
	234
a30fffb0	235	static const struct regmap_config s5m8763_regmap_config = {
25f311fa MB	236	.reg_bits = 8,
	237	.val_bits = 8,
	238
	239	.max_register = S5M8763_REG_LBCNFG2,
6b845ba9 MB	240	.volatile_reg = s5m8763_volatile,
6b845ba9 MB	241	.cache_type = REGCACHE_FLAT,
25f311fa MB	242	};
25f311fa MB	243
a30fffb0	244	static const struct regmap_config s5m8767_regmap_config = {
25f311fa MB	245	.reg_bits = 8,
	246	.val_bits = 8,
	247
	248	.max_register = S5M8767_REG_LDO28CTRL,
6b845ba9 MB	249	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	250	.cache_type = REGCACHE_FLAT,
25f311fa	251	};
26aec009	252
c2c9f1fe KK	253	static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic)
	254	{
	255	unsigned int val;
	256
	257	/* For each device type, the REG_ID is always the first register */
	258	if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val))
	259	dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val);
	260	}
	261
8a97d428 KK	262	static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic)
	263	{
	264	int err;
	265
	266	if (sec_pmic->device_type != S2MPS13X)
	267	return;
	268
	269	if (sec_pmic->pdata->disable_wrstbi) {
	270	/*
	271	* If WRSTBI pin is pulled down this feature must be disabled
	272	* because each Suspend to RAM will trigger buck voltage reset
	273	* to default values.
	274	*/
	275	err = regmap_update_bits(sec_pmic->regmap_pmic,
	276	S2MPS13_REG_WRSTBI,
	277	S2MPS13_REG_WRSTBI_MASK, 0x0);
	278	if (err)
	279	dev_warn(sec_pmic->dev,
	280	"Cannot initialize WRSTBI config: %d\n",
	281	err);
	282	}
	283	}
	284
26aec009 ADK	285	#ifdef CONFIG_OF
	286	/*
	287	* Only the common platform data elements for s5m8767 are parsed here from the
	288	* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
	289	* others have to parse their own platform data elements from device tree.
	290	*
	291	* The s5m8767 platform data structure is instantiated here and the drivers for
	292	* the sub-modules need not instantiate another instance while parsing their
	293	* platform data.
	294	*/
	295	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
	296	struct device *dev)
	297	{
	298	struct sec_platform_data *pd;
	299
	300	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
82a00c49	301	if (!pd)
26aec009	302	return ERR_PTR(-ENOMEM);
26aec009 ADK	303
	304	/*
	305	* ToDo: the 'wakeup' member in the platform data is more of a linux
	306	* specfic information. Hence, there is no binding for that yet and
	307	* not parsed here.
	308	*/
	309
d785334a KK	310	pd->manual_poweroff = of_property_read_bool(dev->of_node,
d785334a KK	311	"samsung,s2mps11-acokb-ground");
8a97d428 KK	312	pd->disable_wrstbi = of_property_read_bool(dev->of_node,
8a97d428 KK	313	"samsung,s2mps11-wrstbi-ground");
26aec009 ADK	314	return pd;
	315	}
	316	#else
197bf856	317	static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
26aec009 ADK	318	struct device *dev)
26aec009 ADK	319	{
005718c0	320	return NULL;
26aec009 ADK	321	}
	322	#endif
	323
8f695de5	324	static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c,
26aec009 ADK	325	const struct i2c_device_id *id)
	326	{
	327	#ifdef CONFIG_OF
	328	if (i2c->dev.of_node) {
	329	const struct of_device_id *match;
b6c1cb4d	330
26aec009	331	match = of_match_node(sec_dt_match, i2c->dev.of_node);
8f695de5	332	return (unsigned long)match->data;
26aec009 ADK	333	}
26aec009 ADK	334	#endif
8f695de5	335	return id->driver_data;
26aec009 ADK	336	}
26aec009 ADK	337
63063bfb	338	static int sec_pmic_probe(struct i2c_client *i2c,
0f5f7078 SK	339	const struct i2c_device_id *id)
0f5f7078 SK	340	{
334a41ce	341	struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
e349c910	342	const struct regmap_config *regmap;
54e8827d	343	const struct mfd_cell *sec_devs;
63063bfb	344	struct sec_pmic_dev *sec_pmic;
9549b5ff	345	unsigned long device_type;
54e8827d	346	int ret, num_sec_devs;
0f5f7078	347
63063bfb	348	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
621210e2	349	GFP_KERNEL);
63063bfb	350	if (sec_pmic == NULL)
0f5f7078 SK	351	return -ENOMEM;
0f5f7078 SK	352
63063bfb SK	353	i2c_set_clientdata(i2c, sec_pmic);
	354	sec_pmic->dev = &i2c->dev;
	355	sec_pmic->i2c = i2c;
	356	sec_pmic->irq = i2c->irq;
9549b5ff	357	device_type = sec_i2c_get_driver_data(i2c, id);
26aec009 ADK	358
	359	if (sec_pmic->dev->of_node) {
	360	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	361	if (IS_ERR(pdata)) {
	362	ret = PTR_ERR(pdata);
	363	return ret;
	364	}
9549b5ff	365	pdata->device_type = device_type;
26aec009	366	}
0f5f7078	367	if (pdata) {
63063bfb	368	sec_pmic->device_type = pdata->device_type;
63063bfb SK	369	sec_pmic->irq_base = pdata->irq_base;
63063bfb SK	370	sec_pmic->wakeup = pdata->wakeup;
26aec009	371	sec_pmic->pdata = pdata;
0f5f7078 SK	372	}
0f5f7078 SK	373
25f311fa	374	switch (sec_pmic->device_type) {
ce24991e SK	375	case S2MPA01:
	376	regmap = &s2mpa01_regmap_config;
	377	break;
25f311fa MB	378	case S2MPS11X:
25f311fa MB	379	regmap = &s2mps11_regmap_config;
dc691966	380	break;
76b9840b CC	381	case S2MPS13X:
	382	regmap = &s2mps13_regmap_config;
	383	break;
dc691966 KK	384	case S2MPS14X:
dc691966 KK	385	regmap = &s2mps14_regmap_config;
25f311fa MB	386	break;
	387	case S5M8763X:
	388	regmap = &s5m8763_regmap_config;
	389	break;
	390	case S5M8767X:
	391	regmap = &s5m8767_regmap_config;
	392	break;
00e2573d CC	393	case S2MPU02:
	394	regmap = &s2mpu02_regmap_config;
	395	break;
25f311fa MB	396	default:
	397	regmap = &sec_regmap_config;
	398	break;
	399	}
	400
3e1e4a5f KK	401	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	402	if (IS_ERR(sec_pmic->regmap_pmic)) {
	403	ret = PTR_ERR(sec_pmic->regmap_pmic);
0f5f7078	404	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
61a2af30	405	ret);
1092e1c7	406	return ret;
0f5f7078 SK	407	}
0f5f7078 SK	408
c3ebb30a	409	if (pdata && pdata->cfg_pmic_irq)
0f5f7078 SK	410	pdata->cfg_pmic_irq();
0f5f7078 SK	411
63063bfb	412	sec_irq_init(sec_pmic);
0f5f7078	413
63063bfb	414	pm_runtime_set_active(sec_pmic->dev);
0f5f7078	415
63063bfb	416	switch (sec_pmic->device_type) {
88a1cfd6	417	case S5M8751X:
54e8827d CC	418	sec_devs = s5m8751_devs;
54e8827d CC	419	num_sec_devs = ARRAY_SIZE(s5m8751_devs);
88a1cfd6 SK	420	break;
88a1cfd6 SK	421	case S5M8763X:
54e8827d CC	422	sec_devs = s5m8763_devs;
54e8827d CC	423	num_sec_devs = ARRAY_SIZE(s5m8763_devs);
88a1cfd6 SK	424	break;
88a1cfd6 SK	425	case S5M8767X:
54e8827d CC	426	sec_devs = s5m8767_devs;
54e8827d CC	427	num_sec_devs = ARRAY_SIZE(s5m8767_devs);
88a1cfd6	428	break;
ce24991e	429	case S2MPA01:
54e8827d CC	430	sec_devs = s2mpa01_devs;
54e8827d CC	431	num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
ce24991e	432	break;
9b6d1343	433	case S2MPS11X:
54e8827d CC	434	sec_devs = s2mps11_devs;
54e8827d CC	435	num_sec_devs = ARRAY_SIZE(s2mps11_devs);
9b6d1343	436	break;
3bc2ee91 CC	437	case S2MPS13X:
	438	sec_devs = s2mps13_devs;
	439	num_sec_devs = ARRAY_SIZE(s2mps13_devs);
	440	break;
dc691966	441	case S2MPS14X:
54e8827d CC	442	sec_devs = s2mps14_devs;
	443	num_sec_devs = ARRAY_SIZE(s2mps14_devs);
	444	break;
	445	case S2MPU02:
	446	sec_devs = s2mpu02_devs;
	447	num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
dc691966	448	break;
88a1cfd6 SK	449	default:
	450	/* If this happens the probe function is problem */
	451	BUG();
	452	}
54e8827d CC	453	ret = mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL,
54e8827d CC	454	0, NULL);
15447a46	455	if (ret)
8c66eece	456	goto err_mfd;
0f5f7078	457
f6d6daaf	458	device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
8a97d428	459	sec_pmic_configure(sec_pmic);
c2c9f1fe	460	sec_pmic_dump_rev(sec_pmic);
f6d6daaf	461
0f5f7078 SK	462	return ret;
0f5f7078 SK	463
8c66eece	464	err_mfd:
63063bfb	465	sec_irq_exit(sec_pmic);
0f5f7078 SK	466	return ret;
	467	}
	468
63063bfb	469	static int sec_pmic_remove(struct i2c_client *i2c)
0f5f7078	470	{
63063bfb	471	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
0f5f7078	472
63063bfb SK	473	mfd_remove_devices(sec_pmic->dev);
63063bfb SK	474	sec_irq_exit(sec_pmic);
0f5f7078 SK	475	return 0;
	476	}
	477
d785334a KK	478	static void sec_pmic_shutdown(struct i2c_client *i2c)
	479	{
	480	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	481	unsigned int reg, mask;
	482
	483	if (!sec_pmic->pdata->manual_poweroff)
	484	return;
	485
	486	switch (sec_pmic->device_type) {
	487	case S2MPS11X:
	488	reg = S2MPS11_REG_CTRL1;
	489	mask = S2MPS11_CTRL1_PWRHOLD_MASK;
	490	break;
	491	default:
	492	/*
	493	* Currently only one board with S2MPS11 needs this, so just
	494	* ignore the rest.
	495	*/
	496	dev_warn(sec_pmic->dev,
	497	"Unsupported device %lu for manual power off\n",
	498	sec_pmic->device_type);
	499	return;
	500	}
	501
	502	regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0);
	503	}
	504
8321bbf8	505	#ifdef CONFIG_PM_SLEEP
f6d6daaf KK	506	static int sec_pmic_suspend(struct device *dev)
	507	{
	508	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	509	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	510
360d15d6	511	if (device_may_wakeup(dev))
f6d6daaf	512	enable_irq_wake(sec_pmic->irq);
360d15d6 KK	513	/*
	514	* PMIC IRQ must be disabled during suspend for RTC alarm
	515	* to work properly.
	516	* When device is woken up from suspend, an
	517	* interrupt occurs before resuming I2C bus controller.
	518	* The interrupt is handled by regmap_irq_thread which tries
	519	* to read RTC registers. This read fails (I2C is still
	520	* suspended) and RTC Alarm interrupt is disabled.
	521	*/
	522	disable_irq(sec_pmic->irq);
f6d6daaf KK	523
	524	return 0;
	525	}
	526
	527	static int sec_pmic_resume(struct device *dev)
	528	{
	529	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
	530	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	531
360d15d6	532	if (device_may_wakeup(dev))
f6d6daaf	533	disable_irq_wake(sec_pmic->irq);
360d15d6	534	enable_irq(sec_pmic->irq);
f6d6daaf KK	535
	536	return 0;
	537	}
8321bbf8	538	#endif /* CONFIG_PM_SLEEP */
f6d6daaf KK	539
	540	static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
	541
63063bfb SK	542	static const struct i2c_device_id sec_pmic_id[] = {
63063bfb SK	543	{ "sec_pmic", 0 },
0f5f7078 SK	544	{ }
0f5f7078 SK	545	};
63063bfb	546	MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
0f5f7078	547
63063bfb	548	static struct i2c_driver sec_pmic_driver = {
0f5f7078	549	.driver = {
63063bfb	550	.name = "sec_pmic",
f6d6daaf	551	.pm = &sec_pmic_pm_ops,
26aec009	552	.of_match_table = of_match_ptr(sec_dt_match),
0f5f7078	553	},
63063bfb SK	554	.probe = sec_pmic_probe,
63063bfb SK	555	.remove = sec_pmic_remove,
d785334a	556	.shutdown = sec_pmic_shutdown,
63063bfb	557	.id_table = sec_pmic_id,
0f5f7078 SK	558	};
0f5f7078 SK	559
63063bfb	560	static int __init sec_pmic_init(void)
0f5f7078	561	{
63063bfb	562	return i2c_add_driver(&sec_pmic_driver);
0f5f7078 SK	563	}
0f5f7078 SK	564
63063bfb	565	subsys_initcall(sec_pmic_init);
0f5f7078	566
63063bfb	567	static void __exit sec_pmic_exit(void)
0f5f7078	568	{
63063bfb	569	i2c_del_driver(&sec_pmic_driver);
0f5f7078	570	}
63063bfb	571	module_exit(sec_pmic_exit);
0f5f7078 SK	572
	573	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	574	MODULE_DESCRIPTION("Core support for the S5M MFD");
	575	MODULE_LICENSE("GPL");