[linux-block.git] / drivers / mfd / sec-core.c

// SPDX-License-Identifier: GPL-2.0+
//
// Copyright (c) 2012 Samsung Electronics Co., Ltd
//              http://www.samsung.com

#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_device.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/s2mps15.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-regulator", },
	{ .name = "s2mps14-rtc", },
	{
		.name = "s2mps11-clk",
		.of_compatible = "samsung,s2mps11-clk",
	},
};

static const struct mfd_cell s2mps13_devs[] = {
	{ .name = "s2mps13-regulator", },
	{ .name = "s2mps13-rtc", },
	{
		.name = "s2mps13-clk",
		.of_compatible = "samsung,s2mps13-clk",
	},
};

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

static const struct mfd_cell s2mps15_devs[] = {
	{ .name = "s2mps15-regulator", },
	{ .name = "s2mps15-rtc", },
	{
		.name = "s2mps13-clk",
		.of_compatible = "samsung,s2mps13-clk",
	},
};

static const struct mfd_cell s2mpa01_devs[] = {
	{ .name = "s2mpa01-pmic", },
	{ .name = "s2mps14-rtc", },
};

static const struct mfd_cell s2mpu02_devs[] = {
	{ .name = "s2mpu02-regulator", },
};

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,s2mps15-pmic",
		.data = (void *)S2MPS15X,
	}, {
		.compatible = "samsung,s2mpa01-pmic",
		.data = (void *)S2MPA01,
	}, {
		.compatible = "samsung,s2mpu02-pmic",
		.data = (void *)S2MPU02,
	}, {
		/* Sentinel */
	},
};
MODULE_DEVICE_TABLE(of, sec_dt_match);

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 s2mps15_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = S2MPS15_REG_LDODSCH4,
	.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);
	}
}

/*
 * 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);

	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;
}

static int sec_pmic_probe(struct i2c_client *i2c)
{
	const struct regmap_config *regmap;
	struct sec_platform_data *pdata;
	const struct mfd_cell *sec_devs;
	struct sec_pmic_dev *sec_pmic;
	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;

	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	if (IS_ERR(pdata)) {
		ret = PTR_ERR(pdata);
		return ret;
	}

	sec_pmic->device_type = (unsigned long)of_device_get_match_data(sec_pmic->dev);
	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 S2MPS15X:
		regmap = &s2mps15_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;
	}

	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 S2MPS15X:
		sec_devs = s2mps15_devs;
		num_sec_devs = ARRAY_SIZE(s2mps15_devs);
		break;
	case S2MPU02:
		sec_devs = s2mpu02_devs;
		num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
		break;
	default:
		dev_err(&i2c->dev, "Unsupported device type (%lu)\n",
			sec_pmic->device_type);
		return -ENODEV;
	}
	ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs,
				   NULL, 0, NULL);
	if (ret)
		return ret;

	sec_pmic_configure(sec_pmic);
	sec_pmic_dump_rev(sec_pmic);

	return ret;
}

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 = to_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 = to_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 struct i2c_driver sec_pmic_driver = {
	.driver = {
		   .name = "sec_pmic",
		   .pm = &sec_pmic_pm_ops,
		   .of_match_table = sec_dt_match,
	},
	.probe_new = sec_pmic_probe,
	.shutdown = sec_pmic_shutdown,
};
module_i2c_driver(sec_pmic_driver);

MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
MODULE_DESCRIPTION("Core support for the S5M MFD");
MODULE_LICENSE("GPL");
Commit	Line	Data
39b27ad9 KK	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// Copyright (c) 2012 Samsung Electronics Co., Ltd
	4	// http://www.samsung.com
0f5f7078 SK	5
	6	#include <linux/module.h>
	7	#include <linux/moduleparam.h>
	8	#include <linux/init.h>
	9	#include <linux/err.h>
	10	#include <linux/slab.h>
	11	#include <linux/i2c.h>
1c5a099b	12	#include <linux/of.h>
cdefb765	13	#include <linux/of_device.h>
26aec009	14	#include <linux/of_irq.h>
0f5f7078 SK	15	#include <linux/interrupt.h>
	16	#include <linux/pm_runtime.h>
	17	#include <linux/mutex.h>
	18	#include <linux/mfd/core.h>
54227bcf SK	19	#include <linux/mfd/samsung/core.h>
54227bcf SK	20	#include <linux/mfd/samsung/irq.h>
ce24991e	21	#include <linux/mfd/samsung/s2mpa01.h>
25f311fa	22	#include <linux/mfd/samsung/s2mps11.h>
76b9840b	23	#include <linux/mfd/samsung/s2mps13.h>
dc691966	24	#include <linux/mfd/samsung/s2mps14.h>
9e4808d2	25	#include <linux/mfd/samsung/s2mps15.h>
00e2573d	26	#include <linux/mfd/samsung/s2mpu02.h>
25f311fa MB	27	#include <linux/mfd/samsung/s5m8763.h>
25f311fa MB	28	#include <linux/mfd/samsung/s5m8767.h>
0f5f7078 SK	29	#include <linux/regmap.h>
0f5f7078 SK	30
5ac98553	31	static const struct mfd_cell s5m8751_devs[] = {
f01faec6 SM	32	{ .name = "s5m8751-pmic", },
	33	{ .name = "s5m-charger", },
	34	{ .name = "s5m8751-codec", },
88a1cfd6 SK	35	};
88a1cfd6 SK	36
5ac98553	37	static const struct mfd_cell s5m8763_devs[] = {
f01faec6 SM	38	{ .name = "s5m8763-pmic", },
	39	{ .name = "s5m-rtc", },
	40	{ .name = "s5m-charger", },
88a1cfd6 SK	41	};
88a1cfd6 SK	42
5ac98553	43	static const struct mfd_cell s5m8767_devs[] = {
f01faec6 SM	44	{ .name = "s5m8767-pmic", },
f01faec6 SM	45	{ .name = "s5m-rtc", },
0f5f7078	46	{
39fed00f	47	.name = "s5m8767-clk",
53c31b34	48	.of_compatible = "samsung,s5m8767-clk",
f01faec6	49	},
0f5f7078 SK	50	};
0f5f7078 SK	51
5ac98553	52	static const struct mfd_cell s2mps11_devs[] = {
f01faec6 SM	53	{ .name = "s2mps11-regulator", },
f01faec6 SM	54	{ .name = "s2mps14-rtc", },
9b6d1343	55	{
3134bcae	56	.name = "s2mps11-clk",
53c31b34	57	.of_compatible = "samsung,s2mps11-clk",
f01faec6	58	},
9b6d1343 SK	59	};
9b6d1343 SK	60
3bc2ee91	61	static const struct mfd_cell s2mps13_devs[] = {
2fadbbf0	62	{ .name = "s2mps13-regulator", },
3bc2ee91 CC	63	{ .name = "s2mps13-rtc", },
	64	{
	65	.name = "s2mps13-clk",
	66	.of_compatible = "samsung,s2mps13-clk",
	67	},
	68	};
	69
dc691966	70	static const struct mfd_cell s2mps14_devs[] = {
f01faec6 SM	71	{ .name = "s2mps14-regulator", },
f01faec6 SM	72	{ .name = "s2mps14-rtc", },
dc691966	73	{
dc691966	74	.name = "s2mps14-clk",
53c31b34	75	.of_compatible = "samsung,s2mps14-clk",
f01faec6	76	},
dc691966 KK	77	};
dc691966 KK	78
9e4808d2	79	static const struct mfd_cell s2mps15_devs[] = {
f01faec6 SM	80	{ .name = "s2mps15-regulator", },
f01faec6 SM	81	{ .name = "s2mps15-rtc", },
9e4808d2	82	{
9e4808d2 TA	83	.name = "s2mps13-clk",
	84	.of_compatible = "samsung,s2mps13-clk",
	85	},
	86	};
	87
ce24991e	88	static const struct mfd_cell s2mpa01_devs[] = {
f01faec6	89	{ .name = "s2mpa01-pmic", },
ec85d4a1	90	{ .name = "s2mps14-rtc", },
ce24991e SK	91	};
ce24991e SK	92
54e8827d	93	static const struct mfd_cell s2mpu02_devs[] = {
f01faec6	94	{ .name = "s2mpu02-regulator", },
54e8827d CC	95	};
54e8827d CC	96
df20b7c5	97	static const struct of_device_id sec_dt_match[] = {
4720eb47 KK	98	{
4720eb47 KK	99	.compatible = "samsung,s5m8767-pmic",
26aec009	100	.data = (void *)S5M8767X,
ce24991e SK	101	}, {
ce24991e SK	102	.compatible = "samsung,s2mps11-pmic",
aa32acad	103	.data = (void *)S2MPS11X,
3bc2ee91 CC	104	}, {
	105	.compatible = "samsung,s2mps13-pmic",
	106	.data = (void *)S2MPS13X,
ce24991e SK	107	}, {
ce24991e SK	108	.compatible = "samsung,s2mps14-pmic",
dc691966	109	.data = (void *)S2MPS14X,
9e4808d2 TA	110	}, {
	111	.compatible = "samsung,s2mps15-pmic",
	112	.data = (void *)S2MPS15X,
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	122	};
fe8166c9	123	MODULE_DEVICE_TABLE(of, sec_dt_match);
26aec009	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
76b9840b CC	197	static const struct regmap_config s2mps13_regmap_config = {
	198	.reg_bits = 8,
	199	.val_bits = 8,
	200
	201	.max_register = S2MPS13_REG_LDODSCH5,
	202	.volatile_reg = s2mps11_volatile,
	203	.cache_type = REGCACHE_FLAT,
	204	};
	205
dc691966 KK	206	static const struct regmap_config s2mps14_regmap_config = {
	207	.reg_bits = 8,
	208	.val_bits = 8,
	209
	210	.max_register = S2MPS14_REG_LDODSCH3,
	211	.volatile_reg = s2mps11_volatile,
	212	.cache_type = REGCACHE_FLAT,
	213	};
	214
9e4808d2 TA	215	static const struct regmap_config s2mps15_regmap_config = {
	216	.reg_bits = 8,
	217	.val_bits = 8,
	218
	219	.max_register = S2MPS15_REG_LDODSCH4,
	220	.volatile_reg = s2mps11_volatile,
	221	.cache_type = REGCACHE_FLAT,
	222	};
	223
00e2573d CC	224	static const struct regmap_config s2mpu02_regmap_config = {
	225	.reg_bits = 8,
	226	.val_bits = 8,
	227
	228	.max_register = S2MPU02_REG_DVSDATA,
	229	.volatile_reg = s2mpu02_volatile,
	230	.cache_type = REGCACHE_FLAT,
	231	};
	232
a30fffb0	233	static const struct regmap_config s5m8763_regmap_config = {
25f311fa MB	234	.reg_bits = 8,
	235	.val_bits = 8,
	236
	237	.max_register = S5M8763_REG_LBCNFG2,
6b845ba9 MB	238	.volatile_reg = s5m8763_volatile,
6b845ba9 MB	239	.cache_type = REGCACHE_FLAT,
25f311fa MB	240	};
25f311fa MB	241
a30fffb0	242	static const struct regmap_config s5m8767_regmap_config = {
25f311fa MB	243	.reg_bits = 8,
	244	.val_bits = 8,
	245
	246	.max_register = S5M8767_REG_LDO28CTRL,
6b845ba9 MB	247	.volatile_reg = s2mps11_volatile,
6b845ba9 MB	248	.cache_type = REGCACHE_FLAT,
25f311fa	249	};
26aec009	250
c2c9f1fe KK	251	static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic)
	252	{
	253	unsigned int val;
	254
	255	/* For each device type, the REG_ID is always the first register */
	256	if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val))
	257	dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val);
	258	}
	259
8a97d428 KK	260	static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic)
	261	{
	262	int err;
	263
	264	if (sec_pmic->device_type != S2MPS13X)
	265	return;
	266
	267	if (sec_pmic->pdata->disable_wrstbi) {
	268	/*
	269	* If WRSTBI pin is pulled down this feature must be disabled
	270	* because each Suspend to RAM will trigger buck voltage reset
	271	* to default values.
	272	*/
	273	err = regmap_update_bits(sec_pmic->regmap_pmic,
	274	S2MPS13_REG_WRSTBI,
	275	S2MPS13_REG_WRSTBI_MASK, 0x0);
	276	if (err)
	277	dev_warn(sec_pmic->dev,
	278	"Cannot initialize WRSTBI config: %d\n",
	279	err);
	280	}
	281	}
	282
26aec009 ADK	283	/*
	284	* Only the common platform data elements for s5m8767 are parsed here from the
	285	* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
	286	* others have to parse their own platform data elements from device tree.
	287	*
	288	* The s5m8767 platform data structure is instantiated here and the drivers for
	289	* the sub-modules need not instantiate another instance while parsing their
	290	* platform data.
	291	*/
4720eb47 KK	292	static struct sec_platform_data *
4720eb47 KK	293	sec_pmic_i2c_parse_dt_pdata(struct device *dev)
26aec009 ADK	294	{
	295	struct sec_platform_data *pd;
	296
	297	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
82a00c49	298	if (!pd)
26aec009	299	return ERR_PTR(-ENOMEM);
26aec009	300
d785334a KK	301	pd->manual_poweroff = of_property_read_bool(dev->of_node,
d785334a KK	302	"samsung,s2mps11-acokb-ground");
8a97d428 KK	303	pd->disable_wrstbi = of_property_read_bool(dev->of_node,
8a97d428 KK	304	"samsung,s2mps11-wrstbi-ground");
26aec009 ADK	305	return pd;
26aec009 ADK	306	}
26aec009	307
a403e589	308	static int sec_pmic_probe(struct i2c_client *i2c)
0f5f7078	309	{
e349c910	310	const struct regmap_config *regmap;
5a7b909c	311	struct sec_platform_data *pdata;
54e8827d	312	const struct mfd_cell *sec_devs;
63063bfb	313	struct sec_pmic_dev *sec_pmic;
54e8827d	314	int ret, num_sec_devs;
0f5f7078	315
63063bfb	316	sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
621210e2	317	GFP_KERNEL);
63063bfb	318	if (sec_pmic == NULL)
0f5f7078 SK	319	return -ENOMEM;
0f5f7078 SK	320
63063bfb SK	321	i2c_set_clientdata(i2c, sec_pmic);
	322	sec_pmic->dev = &i2c->dev;
	323	sec_pmic->i2c = i2c;
	324	sec_pmic->irq = i2c->irq;
5a7b909c KK	325
	326	pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
	327	if (IS_ERR(pdata)) {
	328	ret = PTR_ERR(pdata);
	329	return ret;
0f5f7078	330	}
5a7b909c	331
294fb2ce	332	sec_pmic->device_type = (unsigned long)of_device_get_match_data(sec_pmic->dev);
5a7b909c	333	sec_pmic->pdata = pdata;
0f5f7078	334
25f311fa	335	switch (sec_pmic->device_type) {
ce24991e SK	336	case S2MPA01:
	337	regmap = &s2mpa01_regmap_config;
	338	break;
25f311fa MB	339	case S2MPS11X:
25f311fa MB	340	regmap = &s2mps11_regmap_config;
dc691966	341	break;
76b9840b CC	342	case S2MPS13X:
	343	regmap = &s2mps13_regmap_config;
	344	break;
dc691966 KK	345	case S2MPS14X:
dc691966 KK	346	regmap = &s2mps14_regmap_config;
25f311fa	347	break;
9e4808d2 TA	348	case S2MPS15X:
	349	regmap = &s2mps15_regmap_config;
	350	break;
25f311fa MB	351	case S5M8763X:
	352	regmap = &s5m8763_regmap_config;
	353	break;
	354	case S5M8767X:
	355	regmap = &s5m8767_regmap_config;
	356	break;
00e2573d CC	357	case S2MPU02:
	358	regmap = &s2mpu02_regmap_config;
	359	break;
25f311fa MB	360	default:
	361	regmap = &sec_regmap_config;
	362	break;
	363	}
	364
3e1e4a5f KK	365	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
	366	if (IS_ERR(sec_pmic->regmap_pmic)) {
	367	ret = PTR_ERR(sec_pmic->regmap_pmic);
0f5f7078	368	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
61a2af30	369	ret);
1092e1c7	370	return ret;
0f5f7078 SK	371	}
0f5f7078 SK	372
63063bfb	373	sec_irq_init(sec_pmic);
0f5f7078	374
63063bfb	375	pm_runtime_set_active(sec_pmic->dev);
0f5f7078	376
63063bfb	377	switch (sec_pmic->device_type) {
88a1cfd6	378	case S5M8751X:
54e8827d CC	379	sec_devs = s5m8751_devs;
54e8827d CC	380	num_sec_devs = ARRAY_SIZE(s5m8751_devs);
88a1cfd6 SK	381	break;
88a1cfd6 SK	382	case S5M8763X:
54e8827d CC	383	sec_devs = s5m8763_devs;
54e8827d CC	384	num_sec_devs = ARRAY_SIZE(s5m8763_devs);
88a1cfd6 SK	385	break;
88a1cfd6 SK	386	case S5M8767X:
54e8827d CC	387	sec_devs = s5m8767_devs;
54e8827d CC	388	num_sec_devs = ARRAY_SIZE(s5m8767_devs);
88a1cfd6	389	break;
ce24991e	390	case S2MPA01:
54e8827d CC	391	sec_devs = s2mpa01_devs;
54e8827d CC	392	num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
ce24991e	393	break;
9b6d1343	394	case S2MPS11X:
54e8827d CC	395	sec_devs = s2mps11_devs;
54e8827d CC	396	num_sec_devs = ARRAY_SIZE(s2mps11_devs);
9b6d1343	397	break;
3bc2ee91 CC	398	case S2MPS13X:
	399	sec_devs = s2mps13_devs;
	400	num_sec_devs = ARRAY_SIZE(s2mps13_devs);
	401	break;
dc691966	402	case S2MPS14X:
54e8827d CC	403	sec_devs = s2mps14_devs;
	404	num_sec_devs = ARRAY_SIZE(s2mps14_devs);
	405	break;
9e4808d2 TA	406	case S2MPS15X:
	407	sec_devs = s2mps15_devs;
	408	num_sec_devs = ARRAY_SIZE(s2mps15_devs);
	409	break;
54e8827d CC	410	case S2MPU02:
	411	sec_devs = s2mpu02_devs;
	412	num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
dc691966	413	break;
88a1cfd6	414	default:
83761f96 KK	415	dev_err(&i2c->dev, "Unsupported device type (%lu)\n",
	416	sec_pmic->device_type);
	417	return -ENODEV;
88a1cfd6	418	}
3dc6f4aa LD	419	ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs,
3dc6f4aa LD	420	NULL, 0, NULL);
15447a46	421	if (ret)
3dc6f4aa	422	return ret;
0f5f7078	423
8a97d428	424	sec_pmic_configure(sec_pmic);
c2c9f1fe	425	sec_pmic_dump_rev(sec_pmic);
f6d6daaf	426
0f5f7078	427	return ret;
0f5f7078 SK	428	}
0f5f7078 SK	429
d785334a KK	430	static void sec_pmic_shutdown(struct i2c_client *i2c)
	431	{
	432	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
	433	unsigned int reg, mask;
	434
	435	if (!sec_pmic->pdata->manual_poweroff)
	436	return;
	437
	438	switch (sec_pmic->device_type) {
	439	case S2MPS11X:
	440	reg = S2MPS11_REG_CTRL1;
	441	mask = S2MPS11_CTRL1_PWRHOLD_MASK;
	442	break;
	443	default:
	444	/*
	445	* Currently only one board with S2MPS11 needs this, so just
	446	* ignore the rest.
	447	*/
	448	dev_warn(sec_pmic->dev,
	449	"Unsupported device %lu for manual power off\n",
	450	sec_pmic->device_type);
	451	return;
	452	}
	453
	454	regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0);
	455	}
	456
8321bbf8	457	#ifdef CONFIG_PM_SLEEP
f6d6daaf KK	458	static int sec_pmic_suspend(struct device *dev)
f6d6daaf KK	459	{
1b5420e1	460	struct i2c_client *i2c = to_i2c_client(dev);
f6d6daaf KK	461	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
f6d6daaf KK	462
360d15d6	463	if (device_may_wakeup(dev))
f6d6daaf	464	enable_irq_wake(sec_pmic->irq);
360d15d6 KK	465	/*
	466	* PMIC IRQ must be disabled during suspend for RTC alarm
	467	* to work properly.
	468	* When device is woken up from suspend, an
	469	* interrupt occurs before resuming I2C bus controller.
	470	* The interrupt is handled by regmap_irq_thread which tries
	471	* to read RTC registers. This read fails (I2C is still
	472	* suspended) and RTC Alarm interrupt is disabled.
	473	*/
	474	disable_irq(sec_pmic->irq);
f6d6daaf KK	475
	476	return 0;
	477	}
	478
	479	static int sec_pmic_resume(struct device *dev)
	480	{
1b5420e1	481	struct i2c_client *i2c = to_i2c_client(dev);
f6d6daaf KK	482	struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
f6d6daaf KK	483
360d15d6	484	if (device_may_wakeup(dev))
f6d6daaf	485	disable_irq_wake(sec_pmic->irq);
360d15d6	486	enable_irq(sec_pmic->irq);
f6d6daaf KK	487
	488	return 0;
	489	}
8321bbf8	490	#endif /* CONFIG_PM_SLEEP */
f6d6daaf KK	491
	492	static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
	493
63063bfb	494	static struct i2c_driver sec_pmic_driver = {
0f5f7078	495	.driver = {
63063bfb	496	.name = "sec_pmic",
f6d6daaf	497	.pm = &sec_pmic_pm_ops,
5a7b909c	498	.of_match_table = sec_dt_match,
0f5f7078	499	},
a403e589	500	.probe_new = sec_pmic_probe,
d785334a	501	.shutdown = sec_pmic_shutdown,
0f5f7078	502	};
0c8f2d10	503	module_i2c_driver(sec_pmic_driver);
0f5f7078 SK	504
	505	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	506	MODULE_DESCRIPTION("Core support for the S5M MFD");
	507	MODULE_LICENSE("GPL");