[mirror_ubuntu-jammy-kernel.git] / drivers / regulator / fan53555.c

// SPDX-License-Identifier: GPL-2.0
//
// FAN53555 Fairchild Digitally Programmable TinyBuck Regulator Driver.
//
// Supported Part Numbers:
// FAN53555UC00X/01X/03X/04X/05X
//
// Copyright (c) 2012 Marvell Technology Ltd.
// Yunfan Zhang <yfzhang@marvell.com>

#include <linux/module.h>
#include <linux/param.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/of_device.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regmap.h>
#include <linux/regulator/fan53555.h>

/* Voltage setting */
#define FAN53555_VSEL0		0x00
#define FAN53555_VSEL1		0x01

#define TCS4525_VSEL0		0x11
#define TCS4525_VSEL1		0x10
#define TCS4525_TIME		0x13
#define TCS4525_COMMAND		0x14

/* Control register */
#define FAN53555_CONTROL	0x02
/* IC Type */
#define FAN53555_ID1		0x03
/* IC mask version */
#define FAN53555_ID2		0x04
/* Monitor register */
#define FAN53555_MONITOR	0x05

/* VSEL bit definitions */
#define VSEL_BUCK_EN	(1 << 7)
#define VSEL_MODE		(1 << 6)
/* Chip ID and Verison */
#define DIE_ID		0x0F	/* ID1 */
#define DIE_REV		0x0F	/* ID2 */
/* Control bit definitions */
#define CTL_OUTPUT_DISCHG	(1 << 7)
#define CTL_SLEW_MASK		(0x7 << 4)
#define CTL_SLEW_SHIFT		4
#define CTL_RESET			(1 << 2)
#define CTL_MODE_VSEL0_MODE	BIT(0)
#define CTL_MODE_VSEL1_MODE	BIT(1)

#define FAN53555_NVOLTAGES	64	/* Numbers of voltages */
#define FAN53526_NVOLTAGES	128

#define TCS_VSEL0_MODE		(1 << 7)
#define TCS_VSEL1_MODE		(1 << 6)

#define TCS_SLEW_SHIFT		3
#define TCS_SLEW_MASK		(0x3 < 3)

enum fan53555_vendor {
	FAN53526_VENDOR_FAIRCHILD = 0,
	FAN53555_VENDOR_FAIRCHILD,
	FAN53555_VENDOR_SILERGY,
	FAN53526_VENDOR_TCS,
};

enum {
	FAN53526_CHIP_ID_01 = 1,
};

enum {
	FAN53526_CHIP_REV_08 = 8,
};

/* IC Type */
enum {
	FAN53555_CHIP_ID_00 = 0,
	FAN53555_CHIP_ID_01,
	FAN53555_CHIP_ID_02,
	FAN53555_CHIP_ID_03,
	FAN53555_CHIP_ID_04,
	FAN53555_CHIP_ID_05,
	FAN53555_CHIP_ID_08 = 8,
};

enum {
	TCS4525_CHIP_ID_12 = 12,
};

enum {
	TCS4526_CHIP_ID_00 = 0,
};

/* IC mask revision */
enum {
	FAN53555_CHIP_REV_00 = 0x3,
	FAN53555_CHIP_REV_13 = 0xf,
};

enum {
	SILERGY_SYR82X = 8,
	SILERGY_SYR83X = 9,
};

struct fan53555_device_info {
	enum fan53555_vendor vendor;
	struct device *dev;
	struct regulator_desc desc;
	struct regulator_init_data *regulator;
	/* IC Type and Rev */
	int chip_id;
	int chip_rev;
	/* Voltage setting register */
	unsigned int vol_reg;
	unsigned int sleep_reg;
	/* Voltage range and step(linear) */
	unsigned int vsel_min;
	unsigned int vsel_step;
	unsigned int vsel_count;
	/* Mode */
	unsigned int mode_reg;
	unsigned int mode_mask;
	/* Sleep voltage cache */
	unsigned int sleep_vol_cache;
	/* Slew rate */
	unsigned int slew_reg;
	unsigned int slew_mask;
	const unsigned int *ramp_delay_table;
	unsigned int n_ramp_values;
	unsigned int slew_rate;
};

static int fan53555_set_suspend_voltage(struct regulator_dev *rdev, int uV)
{
	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
	int ret;

	if (di->sleep_vol_cache == uV)
		return 0;
	ret = regulator_map_voltage_linear(rdev, uV, uV);
	if (ret < 0)
		return ret;
	ret = regmap_update_bits(rdev->regmap, di->sleep_reg,
				 di->desc.vsel_mask, ret);
	if (ret < 0)
		return ret;
	/* Cache the sleep voltage setting.
	 * Might not be the real voltage which is rounded */
	di->sleep_vol_cache = uV;

	return 0;
}

static int fan53555_set_suspend_enable(struct regulator_dev *rdev)
{
	struct fan53555_device_info *di = rdev_get_drvdata(rdev);

	return regmap_update_bits(rdev->regmap, di->sleep_reg,
				  VSEL_BUCK_EN, VSEL_BUCK_EN);
}

static int fan53555_set_suspend_disable(struct regulator_dev *rdev)
{
	struct fan53555_device_info *di = rdev_get_drvdata(rdev);

	return regmap_update_bits(rdev->regmap, di->sleep_reg,
				  VSEL_BUCK_EN, 0);
}

static int fan53555_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
	struct fan53555_device_info *di = rdev_get_drvdata(rdev);

	switch (mode) {
	case REGULATOR_MODE_FAST:
		regmap_update_bits(rdev->regmap, di->mode_reg,
				   di->mode_mask, di->mode_mask);
		break;
	case REGULATOR_MODE_NORMAL:
		regmap_update_bits(rdev->regmap, di->vol_reg, di->mode_mask, 0);
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static unsigned int fan53555_get_mode(struct regulator_dev *rdev)
{
	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
	unsigned int val;
	int ret = 0;

	ret = regmap_read(rdev->regmap, di->mode_reg, &val);
	if (ret < 0)
		return ret;
	if (val & di->mode_mask)
		return REGULATOR_MODE_FAST;
	else
		return REGULATOR_MODE_NORMAL;
}

static const unsigned int slew_rates[] = {
	64000,
	32000,
	16000,
	 8000,
	 4000,
	 2000,
	 1000,
	  500,
};

static const unsigned int tcs_slew_rates[] = {
	18700,
	 9300,
	 4600,
	 2300,
};

static const struct regulator_ops fan53555_regulator_ops = {
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	.map_voltage = regulator_map_voltage_linear,
	.list_voltage = regulator_list_voltage_linear,
	.set_suspend_voltage = fan53555_set_suspend_voltage,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.set_mode = fan53555_set_mode,
	.get_mode = fan53555_get_mode,
	.set_ramp_delay = regulator_set_ramp_delay_regmap,
	.set_suspend_enable = fan53555_set_suspend_enable,
	.set_suspend_disable = fan53555_set_suspend_disable,
};

static int fan53526_voltages_setup_fairchild(struct fan53555_device_info *di)
{
	/* Init voltage range and step */
	switch (di->chip_id) {
	case FAN53526_CHIP_ID_01:
		switch (di->chip_rev) {
		case FAN53526_CHIP_REV_08:
			di->vsel_min = 600000;
			di->vsel_step = 6250;
			break;
		default:
			dev_err(di->dev,
				"Chip ID %d with rev %d not supported!\n",
				di->chip_id, di->chip_rev);
			return -EINVAL;
		}
		break;
	default:
		dev_err(di->dev,
			"Chip ID %d not supported!\n", di->chip_id);
		return -EINVAL;
	}

	di->slew_reg = FAN53555_CONTROL;
	di->slew_mask = CTL_SLEW_MASK;
	di->ramp_delay_table = slew_rates;
	di->n_ramp_values = ARRAY_SIZE(slew_rates);
	di->vsel_count = FAN53526_NVOLTAGES;

	return 0;
}

static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di)
{
	/* Init voltage range and step */
	switch (di->chip_id) {
	case FAN53555_CHIP_ID_00:
		switch (di->chip_rev) {
		case FAN53555_CHIP_REV_00:
			di->vsel_min = 600000;
			di->vsel_step = 10000;
			break;
		case FAN53555_CHIP_REV_13:
			di->vsel_min = 800000;
			di->vsel_step = 10000;
			break;
		default:
			dev_err(di->dev,
				"Chip ID %d with rev %d not supported!\n",
				di->chip_id, di->chip_rev);
			return -EINVAL;
		}
		break;
	case FAN53555_CHIP_ID_01:
	case FAN53555_CHIP_ID_03:
	case FAN53555_CHIP_ID_05:
	case FAN53555_CHIP_ID_08:
		di->vsel_min = 600000;
		di->vsel_step = 10000;
		break;
	case FAN53555_CHIP_ID_04:
		di->vsel_min = 603000;
		di->vsel_step = 12826;
		break;
	default:
		dev_err(di->dev,
			"Chip ID %d not supported!\n", di->chip_id);
		return -EINVAL;
	}
	di->slew_reg = FAN53555_CONTROL;
	di->slew_mask = CTL_SLEW_MASK;
	di->ramp_delay_table = slew_rates;
	di->n_ramp_values = ARRAY_SIZE(slew_rates);
	di->vsel_count = FAN53555_NVOLTAGES;

	return 0;
}

static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di)
{
	/* Init voltage range and step */
	switch (di->chip_id) {
	case SILERGY_SYR82X:
	case SILERGY_SYR83X:
		di->vsel_min = 712500;
		di->vsel_step = 12500;
		break;
	default:
		dev_err(di->dev,
			"Chip ID %d not supported!\n", di->chip_id);
		return -EINVAL;
	}
	di->slew_reg = FAN53555_CONTROL;
	di->slew_mask = CTL_SLEW_MASK;
	di->ramp_delay_table = slew_rates;
	di->n_ramp_values = ARRAY_SIZE(slew_rates);
	di->vsel_count = FAN53555_NVOLTAGES;

	return 0;
}

static int fan53526_voltages_setup_tcs(struct fan53555_device_info *di)
{
	switch (di->chip_id) {
	case TCS4525_CHIP_ID_12:
	case TCS4526_CHIP_ID_00:
		di->slew_reg = TCS4525_TIME;
		di->slew_mask = TCS_SLEW_MASK;
		di->ramp_delay_table = tcs_slew_rates;
		di->n_ramp_values = ARRAY_SIZE(tcs_slew_rates);

		/* Init voltage range and step */
		di->vsel_min = 600000;
		di->vsel_step = 6250;
		di->vsel_count = FAN53526_NVOLTAGES;
		break;
	default:
		dev_err(di->dev, "Chip ID %d not supported!\n", di->chip_id);
		return -EINVAL;
	}

	return 0;
}

/* For 00,01,03,05 options:
 * VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V.
 * For 04 option:
 * VOUT = 0.603V + NSELx * 12.826mV, from 0.603 to 1.411V.
 * */
static int fan53555_device_setup(struct fan53555_device_info *di,
				struct fan53555_platform_data *pdata)
{
	int ret = 0;

	/* Setup voltage control register */
	switch (di->vendor) {
	case FAN53526_VENDOR_FAIRCHILD:
	case FAN53555_VENDOR_FAIRCHILD:
	case FAN53555_VENDOR_SILERGY:
		switch (pdata->sleep_vsel_id) {
		case FAN53555_VSEL_ID_0:
			di->sleep_reg = FAN53555_VSEL0;
			di->vol_reg = FAN53555_VSEL1;
			break;
		case FAN53555_VSEL_ID_1:
			di->sleep_reg = FAN53555_VSEL1;
			di->vol_reg = FAN53555_VSEL0;
			break;
		default:
			dev_err(di->dev, "Invalid VSEL ID!\n");
			return -EINVAL;
		}
		break;
	case FAN53526_VENDOR_TCS:
		switch (pdata->sleep_vsel_id) {
		case FAN53555_VSEL_ID_0:
			di->sleep_reg = TCS4525_VSEL0;
			di->vol_reg = TCS4525_VSEL1;
			break;
		case FAN53555_VSEL_ID_1:
			di->sleep_reg = TCS4525_VSEL1;
			di->vol_reg = TCS4525_VSEL0;
			break;
		default:
			dev_err(di->dev, "Invalid VSEL ID!\n");
			return -EINVAL;
		}
		break;
	default:
		dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
		return -EINVAL;
	}

	/* Setup mode control register */
	switch (di->vendor) {
	case FAN53526_VENDOR_FAIRCHILD:
		di->mode_reg = FAN53555_CONTROL;

		switch (pdata->sleep_vsel_id) {
		case FAN53555_VSEL_ID_0:
			di->mode_mask = CTL_MODE_VSEL1_MODE;
			break;
		case FAN53555_VSEL_ID_1:
			di->mode_mask = CTL_MODE_VSEL0_MODE;
			break;
		}
		break;
	case FAN53555_VENDOR_FAIRCHILD:
	case FAN53555_VENDOR_SILERGY:
		di->mode_reg = di->vol_reg;
		di->mode_mask = VSEL_MODE;
		break;
	case FAN53526_VENDOR_TCS:
		di->mode_reg = TCS4525_COMMAND;

		switch (pdata->sleep_vsel_id) {
		case FAN53555_VSEL_ID_0:
			di->mode_mask = TCS_VSEL1_MODE;
			break;
		case FAN53555_VSEL_ID_1:
			di->mode_mask = TCS_VSEL0_MODE;
			break;
		}
		break;
	default:
		dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
		return -EINVAL;
	}

	/* Setup voltage range */
	switch (di->vendor) {
	case FAN53526_VENDOR_FAIRCHILD:
		ret = fan53526_voltages_setup_fairchild(di);
		break;
	case FAN53555_VENDOR_FAIRCHILD:
		ret = fan53555_voltages_setup_fairchild(di);
		break;
	case FAN53555_VENDOR_SILERGY:
		ret = fan53555_voltages_setup_silergy(di);
		break;
	case FAN53526_VENDOR_TCS:
		ret = fan53526_voltages_setup_tcs(di);
		break;
	default:
		dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
		return -EINVAL;
	}

	return ret;
}

static int fan53555_regulator_register(struct fan53555_device_info *di,
			struct regulator_config *config)
{
	struct regulator_desc *rdesc = &di->desc;
	struct regulator_dev *rdev;

	rdesc->name = "fan53555-reg";
	rdesc->supply_name = "vin";
	rdesc->ops = &fan53555_regulator_ops;
	rdesc->type = REGULATOR_VOLTAGE;
	rdesc->n_voltages = di->vsel_count;
	rdesc->enable_reg = di->vol_reg;
	rdesc->enable_mask = VSEL_BUCK_EN;
	rdesc->min_uV = di->vsel_min;
	rdesc->uV_step = di->vsel_step;
	rdesc->vsel_reg = di->vol_reg;
	rdesc->vsel_mask = di->vsel_count - 1;
	rdesc->ramp_reg = di->slew_reg;
	rdesc->ramp_mask = di->slew_mask;
	rdesc->ramp_delay_table = di->ramp_delay_table;
	rdesc->n_ramp_values = di->n_ramp_values;
	rdesc->owner = THIS_MODULE;

	rdev = devm_regulator_register(di->dev, &di->desc, config);
	return PTR_ERR_OR_ZERO(rdev);
}

static const struct regmap_config fan53555_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
};

static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev,
					      struct device_node *np,
					      const struct regulator_desc *desc)
{
	struct fan53555_platform_data *pdata;
	int ret;
	u32 tmp;

	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
		return NULL;

	pdata->regulator = of_get_regulator_init_data(dev, np, desc);

	ret = of_property_read_u32(np, "fcs,suspend-voltage-selector",
				   &tmp);
	if (!ret)
		pdata->sleep_vsel_id = tmp;

	return pdata;
}

static const struct of_device_id __maybe_unused fan53555_dt_ids[] = {
	{
		.compatible = "fcs,fan53526",
		.data = (void *)FAN53526_VENDOR_FAIRCHILD,
	}, {
		.compatible = "fcs,fan53555",
		.data = (void *)FAN53555_VENDOR_FAIRCHILD
	}, {
		.compatible = "silergy,syr827",
		.data = (void *)FAN53555_VENDOR_SILERGY,
	}, {
		.compatible = "silergy,syr828",
		.data = (void *)FAN53555_VENDOR_SILERGY,
	}, {
		.compatible = "tcs,tcs4525",
		.data = (void *)FAN53526_VENDOR_TCS
	}, {
		.compatible = "tcs,tcs4526",
		.data = (void *)FAN53526_VENDOR_TCS
	},
	{ }
};
MODULE_DEVICE_TABLE(of, fan53555_dt_ids);

static int fan53555_regulator_probe(struct i2c_client *client,
				const struct i2c_device_id *id)
{
	struct device_node *np = client->dev.of_node;
	struct fan53555_device_info *di;
	struct fan53555_platform_data *pdata;
	struct regulator_config config = { };
	struct regmap *regmap;
	unsigned int val;
	int ret;

	di = devm_kzalloc(&client->dev, sizeof(struct fan53555_device_info),
					GFP_KERNEL);
	if (!di)
		return -ENOMEM;

	pdata = dev_get_platdata(&client->dev);
	if (!pdata)
		pdata = fan53555_parse_dt(&client->dev, np, &di->desc);

	if (!pdata || !pdata->regulator) {
		dev_err(&client->dev, "Platform data not found!\n");
		return -ENODEV;
	}

	di->regulator = pdata->regulator;
	if (client->dev.of_node) {
		di->vendor =
			(unsigned long)of_device_get_match_data(&client->dev);
	} else {
		/* if no ramp constraint set, get the pdata ramp_delay */
		if (!di->regulator->constraints.ramp_delay) {
			if (pdata->slew_rate >= ARRAY_SIZE(slew_rates)) {
				dev_err(&client->dev, "Invalid slew_rate\n");
				return -EINVAL;
			}

			di->regulator->constraints.ramp_delay
					= slew_rates[pdata->slew_rate];
		}

		di->vendor = id->driver_data;
	}

	regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
	if (IS_ERR(regmap)) {
		dev_err(&client->dev, "Failed to allocate regmap!\n");
		return PTR_ERR(regmap);
	}
	di->dev = &client->dev;
	i2c_set_clientdata(client, di);
	/* Get chip ID */
	ret = regmap_read(regmap, FAN53555_ID1, &val);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to get chip ID!\n");
		return ret;
	}
	di->chip_id = val & DIE_ID;
	/* Get chip revision */
	ret = regmap_read(regmap, FAN53555_ID2, &val);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to get chip Rev!\n");
		return ret;
	}
	di->chip_rev = val & DIE_REV;
	dev_info(&client->dev, "FAN53555 Option[%d] Rev[%d] Detected!\n",
				di->chip_id, di->chip_rev);
	/* Device init */
	ret = fan53555_device_setup(di, pdata);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to setup device!\n");
		return ret;
	}
	/* Register regulator */
	config.dev = di->dev;
	config.init_data = di->regulator;
	config.regmap = regmap;
	config.driver_data = di;
	config.of_node = np;

	ret = fan53555_regulator_register(di, &config);
	if (ret < 0)
		dev_err(&client->dev, "Failed to register regulator!\n");
	return ret;

}

static const struct i2c_device_id fan53555_id[] = {
	{
		.name = "fan53526",
		.driver_data = FAN53526_VENDOR_FAIRCHILD
	}, {
		.name = "fan53555",
		.driver_data = FAN53555_VENDOR_FAIRCHILD
	}, {
		.name = "syr827",
		.driver_data = FAN53555_VENDOR_SILERGY
	}, {
		.name = "syr828",
		.driver_data = FAN53555_VENDOR_SILERGY
	}, {
		.name = "tcs4525",
		.driver_data = FAN53526_VENDOR_TCS
	}, {
		.name = "tcs4526",
		.driver_data = FAN53526_VENDOR_TCS
	},
	{ },
};
MODULE_DEVICE_TABLE(i2c, fan53555_id);

static struct i2c_driver fan53555_regulator_driver = {
	.driver = {
		.name = "fan53555-regulator",
		.of_match_table = of_match_ptr(fan53555_dt_ids),
	},
	.probe = fan53555_regulator_probe,
	.id_table = fan53555_id,
};

module_i2c_driver(fan53555_regulator_driver);

MODULE_AUTHOR("Yunfan Zhang <yfzhang@marvell.com>");
MODULE_DESCRIPTION("FAN53555 regulator driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
6a1beee2 AL	1	// SPDX-License-Identifier: GPL-2.0
	2	//
	3	// FAN53555 Fairchild Digitally Programmable TinyBuck Regulator Driver.
	4	//
	5	// Supported Part Numbers:
	6	// FAN53555UC00X/01X/03X/04X/05X
	7	//
	8	// Copyright (c) 2012 Marvell Technology Ltd.
	9	// Yunfan Zhang <yfzhang@marvell.com>
	10
49d8c599 YZ	11	#include <linux/module.h>
	12	#include <linux/param.h>
	13	#include <linux/err.h>
	14	#include <linux/platform_device.h>
	15	#include <linux/regulator/driver.h>
	16	#include <linux/regulator/machine.h>
91f23d8f HS	17	#include <linux/regulator/of_regulator.h>
91f23d8f HS	18	#include <linux/of_device.h>
49d8c599 YZ	19	#include <linux/i2c.h>
	20	#include <linux/slab.h>
	21	#include <linux/regmap.h>
	22	#include <linux/regulator/fan53555.h>
	23
	24	/* Voltage setting */
	25	#define FAN53555_VSEL0 0x00
	26	#define FAN53555_VSEL1 0x01
914df8fa JC	27
	28	#define TCS4525_VSEL0 0x11
	29	#define TCS4525_VSEL1 0x10
	30	#define TCS4525_TIME 0x13
	31	#define TCS4525_COMMAND 0x14
	32
49d8c599 YZ	33	/* Control register */
	34	#define FAN53555_CONTROL 0x02
	35	/* IC Type */
	36	#define FAN53555_ID1 0x03
	37	/* IC mask version */
	38	#define FAN53555_ID2 0x04
	39	/* Monitor register */
	40	#define FAN53555_MONITOR 0x05
	41
	42	/* VSEL bit definitions */
	43	#define VSEL_BUCK_EN (1 << 7)
	44	#define VSEL_MODE (1 << 6)
49d8c599 YZ	45	/* Chip ID and Verison */
	46	#define DIE_ID 0x0F /* ID1 */
	47	#define DIE_REV 0x0F /* ID2 */
	48	/* Control bit definitions */
	49	#define CTL_OUTPUT_DISCHG (1 << 7)
	50	#define CTL_SLEW_MASK (0x7 << 4)
	51	#define CTL_SLEW_SHIFT 4
	52	#define CTL_RESET (1 << 2)
f2a9eb97 BA	53	#define CTL_MODE_VSEL0_MODE BIT(0)
f2a9eb97 BA	54	#define CTL_MODE_VSEL1_MODE BIT(1)
49d8c599 YZ	55
49d8c599 YZ	56	#define FAN53555_NVOLTAGES 64 /* Numbers of voltages */
f2a9eb97	57	#define FAN53526_NVOLTAGES 128
914df8fa	58
914df8fa JC	59	#define TCS_VSEL0_MODE (1 << 7)
	60	#define TCS_VSEL1_MODE (1 << 6)
	61
	62	#define TCS_SLEW_SHIFT 3
	63	#define TCS_SLEW_MASK (0x3 < 3)
49d8c599	64
ee30928a	65	enum fan53555_vendor {
f2a9eb97 BA	66	FAN53526_VENDOR_FAIRCHILD = 0,
f2a9eb97 BA	67	FAN53555_VENDOR_FAIRCHILD,
ee30928a	68	FAN53555_VENDOR_SILERGY,
b3cc8ec0	69	FAN53526_VENDOR_TCS,
ee30928a HS	70	};
ee30928a HS	71
f2a9eb97 BA	72	enum {
	73	FAN53526_CHIP_ID_01 = 1,
	74	};
	75
	76	enum {
	77	FAN53526_CHIP_REV_08 = 8,
	78	};
	79
49d8c599 YZ	80	/* IC Type */
	81	enum {
	82	FAN53555_CHIP_ID_00 = 0,
	83	FAN53555_CHIP_ID_01,
	84	FAN53555_CHIP_ID_02,
	85	FAN53555_CHIP_ID_03,
	86	FAN53555_CHIP_ID_04,
	87	FAN53555_CHIP_ID_05,
5e39cf49	88	FAN53555_CHIP_ID_08 = 8,
49d8c599 YZ	89	};
49d8c599 YZ	90
f9028dcd PG	91	enum {
	92	TCS4525_CHIP_ID_12 = 12,
	93	};
	94
5eee5ece RH	95	enum {
	96	TCS4526_CHIP_ID_00 = 0,
	97	};
	98
e57cbb70 WE	99	/* IC mask revision */
	100	enum {
	101	FAN53555_CHIP_REV_00 = 0x3,
	102	FAN53555_CHIP_REV_13 = 0xf,
	103	};
	104
ee30928a HS	105	enum {
ee30928a HS	106	SILERGY_SYR82X = 8,
5365e3df	107	SILERGY_SYR83X = 9,
ee30928a HS	108	};
ee30928a HS	109
49d8c599	110	struct fan53555_device_info {
ee30928a	111	enum fan53555_vendor vendor;
49d8c599 YZ	112	struct device *dev;
49d8c599 YZ	113	struct regulator_desc desc;
49d8c599 YZ	114	struct regulator_init_data *regulator;
	115	/* IC Type and Rev */
	116	int chip_id;
	117	int chip_rev;
	118	/* Voltage setting register */
	119	unsigned int vol_reg;
	120	unsigned int sleep_reg;
	121	/* Voltage range and step(linear) */
	122	unsigned int vsel_min;
49d8c599	123	unsigned int vsel_step;
f2a9eb97	124	unsigned int vsel_count;
f2a9eb97 BA	125	/* Mode */
	126	unsigned int mode_reg;
	127	unsigned int mode_mask;
49d8c599 YZ	128	/* Sleep voltage cache */
49d8c599 YZ	129	unsigned int sleep_vol_cache;
914df8fa JC	130	/* Slew rate */
	131	unsigned int slew_reg;
	132	unsigned int slew_mask;
b61ac767 AL	133	const unsigned int *ramp_delay_table;
b61ac767 AL	134	unsigned int n_ramp_values;
914df8fa	135	unsigned int slew_rate;
49d8c599 YZ	136	};
	137
	138	static int fan53555_set_suspend_voltage(struct regulator_dev *rdev, int uV)
	139	{
	140	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
	141	int ret;
	142
	143	if (di->sleep_vol_cache == uV)
	144	return 0;
	145	ret = regulator_map_voltage_linear(rdev, uV, uV);
	146	if (ret < 0)
145fe1e1	147	return ret;
a69929c7	148	ret = regmap_update_bits(rdev->regmap, di->sleep_reg,
f2a9eb97	149	di->desc.vsel_mask, ret);
49d8c599	150	if (ret < 0)
145fe1e1	151	return ret;
49d8c599 YZ	152	/* Cache the sleep voltage setting.
	153	* Might not be the real voltage which is rounded */
	154	di->sleep_vol_cache = uV;
	155
	156	return 0;
	157	}
	158
ab7cad33	159	static int fan53555_set_suspend_enable(struct regulator_dev *rdev)
	160	{
	161	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
	162
a69929c7	163	return regmap_update_bits(rdev->regmap, di->sleep_reg,
ab7cad33	164	VSEL_BUCK_EN, VSEL_BUCK_EN);
	165	}
	166
	167	static int fan53555_set_suspend_disable(struct regulator_dev *rdev)
	168	{
	169	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
	170
a69929c7	171	return regmap_update_bits(rdev->regmap, di->sleep_reg,
ab7cad33	172	VSEL_BUCK_EN, 0);
	173	}
	174
49d8c599 YZ	175	static int fan53555_set_mode(struct regulator_dev *rdev, unsigned int mode)
	176	{
	177	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
	178
	179	switch (mode) {
	180	case REGULATOR_MODE_FAST:
a69929c7	181	regmap_update_bits(rdev->regmap, di->mode_reg,
f2a9eb97	182	di->mode_mask, di->mode_mask);
49d8c599 YZ	183	break;
49d8c599 YZ	184	case REGULATOR_MODE_NORMAL:
a69929c7	185	regmap_update_bits(rdev->regmap, di->vol_reg, di->mode_mask, 0);
49d8c599 YZ	186	break;
	187	default:
	188	return -EINVAL;
	189	}
	190	return 0;
	191	}
	192
	193	static unsigned int fan53555_get_mode(struct regulator_dev *rdev)
	194	{
	195	struct fan53555_device_info *di = rdev_get_drvdata(rdev);
	196	unsigned int val;
	197	int ret = 0;
	198
a69929c7	199	ret = regmap_read(rdev->regmap, di->mode_reg, &val);
49d8c599 YZ	200	if (ret < 0)
49d8c599 YZ	201	return ret;
f2a9eb97	202	if (val & di->mode_mask)
49d8c599 YZ	203	return REGULATOR_MODE_FAST;
	204	else
	205	return REGULATOR_MODE_NORMAL;
	206	}
	207
b61ac767	208	static const unsigned int slew_rates[] = {
dd7e71fb HS	209	64000,
	210	32000,
	211	16000,
	212	8000,
	213	4000,
	214	2000,
	215	1000,
	216	500,
	217	};
	218
b61ac767	219	static const unsigned int tcs_slew_rates[] = {
914df8fa JC	220	18700,
	221	9300,
	222	4600,
	223	2300,
	224	};
	225
71880ab2	226	static const struct regulator_ops fan53555_regulator_ops = {
49d8c599 YZ	227	.set_voltage_sel = regulator_set_voltage_sel_regmap,
49d8c599 YZ	228	.get_voltage_sel = regulator_get_voltage_sel_regmap,
fda87a42	229	.set_voltage_time_sel = regulator_set_voltage_time_sel,
49d8c599 YZ	230	.map_voltage = regulator_map_voltage_linear,
	231	.list_voltage = regulator_list_voltage_linear,
	232	.set_suspend_voltage = fan53555_set_suspend_voltage,
	233	.enable = regulator_enable_regmap,
	234	.disable = regulator_disable_regmap,
	235	.is_enabled = regulator_is_enabled_regmap,
	236	.set_mode = fan53555_set_mode,
	237	.get_mode = fan53555_get_mode,
b61ac767	238	.set_ramp_delay = regulator_set_ramp_delay_regmap,
ab7cad33	239	.set_suspend_enable = fan53555_set_suspend_enable,
ab7cad33	240	.set_suspend_disable = fan53555_set_suspend_disable,
49d8c599 YZ	241	};
49d8c599 YZ	242
f2a9eb97 BA	243	static int fan53526_voltages_setup_fairchild(struct fan53555_device_info *di)
	244	{
	245	/* Init voltage range and step */
	246	switch (di->chip_id) {
	247	case FAN53526_CHIP_ID_01:
	248	switch (di->chip_rev) {
	249	case FAN53526_CHIP_REV_08:
	250	di->vsel_min = 600000;
	251	di->vsel_step = 6250;
	252	break;
	253	default:
	254	dev_err(di->dev,
	255	"Chip ID %d with rev %d not supported!\n",
	256	di->chip_id, di->chip_rev);
	257	return -EINVAL;
	258	}
	259	break;
	260	default:
	261	dev_err(di->dev,
	262	"Chip ID %d not supported!\n", di->chip_id);
	263	return -EINVAL;
	264	}
	265
30b38b80 AL	266	di->slew_reg = FAN53555_CONTROL;
30b38b80 AL	267	di->slew_mask = CTL_SLEW_MASK;
b61ac767 AL	268	di->ramp_delay_table = slew_rates;
b61ac767 AL	269	di->n_ramp_values = ARRAY_SIZE(slew_rates);
f2a9eb97 BA	270	di->vsel_count = FAN53526_NVOLTAGES;
	271
	272	return 0;
	273	}
	274
ee30928a HS	275	static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di)
	276	{
	277	/* Init voltage range and step */
	278	switch (di->chip_id) {
	279	case FAN53555_CHIP_ID_00:
e57cbb70 WE	280	switch (di->chip_rev) {
	281	case FAN53555_CHIP_REV_00:
	282	di->vsel_min = 600000;
	283	di->vsel_step = 10000;
	284	break;
	285	case FAN53555_CHIP_REV_13:
	286	di->vsel_min = 800000;
	287	di->vsel_step = 10000;
	288	break;
	289	default:
	290	dev_err(di->dev,
	291	"Chip ID %d with rev %d not supported!\n",
	292	di->chip_id, di->chip_rev);
	293	return -EINVAL;
	294	}
	295	break;
ee30928a HS	296	case FAN53555_CHIP_ID_01:
	297	case FAN53555_CHIP_ID_03:
	298	case FAN53555_CHIP_ID_05:
5e39cf49	299	case FAN53555_CHIP_ID_08:
ee30928a HS	300	di->vsel_min = 600000;
	301	di->vsel_step = 10000;
	302	break;
	303	case FAN53555_CHIP_ID_04:
	304	di->vsel_min = 603000;
	305	di->vsel_step = 12826;
	306	break;
	307	default:
	308	dev_err(di->dev,
	309	"Chip ID %d not supported!\n", di->chip_id);
	310	return -EINVAL;
	311	}
914df8fa JC	312	di->slew_reg = FAN53555_CONTROL;
914df8fa JC	313	di->slew_mask = CTL_SLEW_MASK;
b61ac767 AL	314	di->ramp_delay_table = slew_rates;
b61ac767 AL	315	di->n_ramp_values = ARRAY_SIZE(slew_rates);
f2a9eb97 BA	316	di->vsel_count = FAN53555_NVOLTAGES;
f2a9eb97 BA	317
ee30928a HS	318	return 0;
	319	}
	320
	321	static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di)
	322	{
	323	/* Init voltage range and step */
	324	switch (di->chip_id) {
	325	case SILERGY_SYR82X:
5365e3df	326	case SILERGY_SYR83X:
ee30928a HS	327	di->vsel_min = 712500;
	328	di->vsel_step = 12500;
	329	break;
	330	default:
	331	dev_err(di->dev,
	332	"Chip ID %d not supported!\n", di->chip_id);
	333	return -EINVAL;
	334	}
914df8fa	335	di->slew_reg = FAN53555_CONTROL;
914df8fa	336	di->slew_mask = CTL_SLEW_MASK;
b61ac767 AL	337	di->ramp_delay_table = slew_rates;
b61ac767 AL	338	di->n_ramp_values = ARRAY_SIZE(slew_rates);
f2a9eb97 BA	339	di->vsel_count = FAN53555_NVOLTAGES;
f2a9eb97 BA	340
ee30928a HS	341	return 0;
	342	}
	343
b3cc8ec0	344	static int fan53526_voltages_setup_tcs(struct fan53555_device_info *di)
914df8fa	345	{
f9028dcd PG	346	switch (di->chip_id) {
f9028dcd PG	347	case TCS4525_CHIP_ID_12:
5eee5ece	348	case TCS4526_CHIP_ID_00:
f9028dcd PG	349	di->slew_reg = TCS4525_TIME;
f9028dcd PG	350	di->slew_mask = TCS_SLEW_MASK;
b61ac767 AL	351	di->ramp_delay_table = tcs_slew_rates;
b61ac767 AL	352	di->n_ramp_values = ARRAY_SIZE(tcs_slew_rates);
914df8fa	353
f9028dcd PG	354	/* Init voltage range and step */
	355	di->vsel_min = 600000;
	356	di->vsel_step = 6250;
	357	di->vsel_count = FAN53526_NVOLTAGES;
	358	break;
	359	default:
	360	dev_err(di->dev, "Chip ID %d not supported!\n", di->chip_id);
	361	return -EINVAL;
	362	}
914df8fa JC	363
	364	return 0;
	365	}
	366
49d8c599 YZ	367	/* For 00,01,03,05 options:
	368	* VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V.
	369	* For 04 option:
	370	* VOUT = 0.603V + NSELx * 12.826mV, from 0.603 to 1.411V.
	371	* */
	372	static int fan53555_device_setup(struct fan53555_device_info *di,
	373	struct fan53555_platform_data *pdata)
	374	{
ee30928a HS	375	int ret = 0;
ee30928a HS	376
49d8c599	377	/* Setup voltage control register */
914df8fa JC	378	switch (di->vendor) {
	379	case FAN53526_VENDOR_FAIRCHILD:
	380	case FAN53555_VENDOR_FAIRCHILD:
	381	case FAN53555_VENDOR_SILERGY:
	382	switch (pdata->sleep_vsel_id) {
	383	case FAN53555_VSEL_ID_0:
	384	di->sleep_reg = FAN53555_VSEL0;
	385	di->vol_reg = FAN53555_VSEL1;
	386	break;
	387	case FAN53555_VSEL_ID_1:
	388	di->sleep_reg = FAN53555_VSEL1;
	389	di->vol_reg = FAN53555_VSEL0;
	390	break;
	391	default:
	392	dev_err(di->dev, "Invalid VSEL ID!\n");
	393	return -EINVAL;
	394	}
49d8c599	395	break;
b3cc8ec0	396	case FAN53526_VENDOR_TCS:
914df8fa JC	397	switch (pdata->sleep_vsel_id) {
	398	case FAN53555_VSEL_ID_0:
	399	di->sleep_reg = TCS4525_VSEL0;
	400	di->vol_reg = TCS4525_VSEL1;
	401	break;
	402	case FAN53555_VSEL_ID_1:
	403	di->sleep_reg = TCS4525_VSEL1;
	404	di->vol_reg = TCS4525_VSEL0;
	405	break;
	406	default:
	407	dev_err(di->dev, "Invalid VSEL ID!\n");
	408	return -EINVAL;
	409	}
49d8c599 YZ	410	break;
49d8c599 YZ	411	default:
914df8fa	412	dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
49d8c599 YZ	413	return -EINVAL;
49d8c599 YZ	414	}
ee30928a	415
f2a9eb97 BA	416	/* Setup mode control register */
	417	switch (di->vendor) {
	418	case FAN53526_VENDOR_FAIRCHILD:
	419	di->mode_reg = FAN53555_CONTROL;
	420
	421	switch (pdata->sleep_vsel_id) {
	422	case FAN53555_VSEL_ID_0:
	423	di->mode_mask = CTL_MODE_VSEL1_MODE;
	424	break;
	425	case FAN53555_VSEL_ID_1:
	426	di->mode_mask = CTL_MODE_VSEL0_MODE;
	427	break;
	428	}
	429	break;
	430	case FAN53555_VENDOR_FAIRCHILD:
	431	case FAN53555_VENDOR_SILERGY:
	432	di->mode_reg = di->vol_reg;
	433	di->mode_mask = VSEL_MODE;
	434	break;
b3cc8ec0	435	case FAN53526_VENDOR_TCS:
914df8fa JC	436	di->mode_reg = TCS4525_COMMAND;
	437
	438	switch (pdata->sleep_vsel_id) {
	439	case FAN53555_VSEL_ID_0:
	440	di->mode_mask = TCS_VSEL1_MODE;
	441	break;
	442	case FAN53555_VSEL_ID_1:
	443	di->mode_mask = TCS_VSEL0_MODE;
	444	break;
	445	}
	446	break;
f2a9eb97 BA	447	default:
	448	dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
	449	return -EINVAL;
	450	}
	451
	452	/* Setup voltage range */
ee30928a	453	switch (di->vendor) {
f2a9eb97 BA	454	case FAN53526_VENDOR_FAIRCHILD:
	455	ret = fan53526_voltages_setup_fairchild(di);
	456	break;
ee30928a HS	457	case FAN53555_VENDOR_FAIRCHILD:
ee30928a HS	458	ret = fan53555_voltages_setup_fairchild(di);
49d8c599	459	break;
ee30928a HS	460	case FAN53555_VENDOR_SILERGY:
ee30928a HS	461	ret = fan53555_voltages_setup_silergy(di);
49d8c599	462	break;
b3cc8ec0 PG	463	case FAN53526_VENDOR_TCS:
b3cc8ec0 PG	464	ret = fan53526_voltages_setup_tcs(di);
914df8fa	465	break;
49d8c599	466	default:
fe230531	467	dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
49d8c599 YZ	468	return -EINVAL;
49d8c599 YZ	469	}
dd7e71fb	470
ee30928a	471	return ret;
49d8c599 YZ	472	}
	473
	474	static int fan53555_regulator_register(struct fan53555_device_info *di,
	475	struct regulator_config *config)
	476	{
	477	struct regulator_desc *rdesc = &di->desc;
a69929c7	478	struct regulator_dev *rdev;
49d8c599 YZ	479
49d8c599 YZ	480	rdesc->name = "fan53555-reg";
3415d601	481	rdesc->supply_name = "vin";
49d8c599 YZ	482	rdesc->ops = &fan53555_regulator_ops;
49d8c599 YZ	483	rdesc->type = REGULATOR_VOLTAGE;
f2a9eb97	484	rdesc->n_voltages = di->vsel_count;
49d8c599 YZ	485	rdesc->enable_reg = di->vol_reg;
	486	rdesc->enable_mask = VSEL_BUCK_EN;
	487	rdesc->min_uV = di->vsel_min;
	488	rdesc->uV_step = di->vsel_step;
	489	rdesc->vsel_reg = di->vol_reg;
f2a9eb97	490	rdesc->vsel_mask = di->vsel_count - 1;
b61ac767 AL	491	rdesc->ramp_reg = di->slew_reg;
	492	rdesc->ramp_mask = di->slew_mask;
	493	rdesc->ramp_delay_table = di->ramp_delay_table;
	494	rdesc->n_ramp_values = di->n_ramp_values;
49d8c599 YZ	495	rdesc->owner = THIS_MODULE;
49d8c599 YZ	496
a69929c7 AL	497	rdev = devm_regulator_register(di->dev, &di->desc, config);
a69929c7 AL	498	return PTR_ERR_OR_ZERO(rdev);
49d8c599 YZ	499	}
49d8c599 YZ	500
121b567d	501	static const struct regmap_config fan53555_regmap_config = {
49d8c599 YZ	502	.reg_bits = 8,
	503	.val_bits = 8,
	504	};
	505
91f23d8f	506	static struct fan53555_platform_data fan53555_parse_dt(struct device dev,
072e78b1 JMC	507	struct device_node *np,
072e78b1 JMC	508	const struct regulator_desc *desc)
91f23d8f HS	509	{
	510	struct fan53555_platform_data *pdata;
	511	int ret;
	512	u32 tmp;
	513
	514	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
	515	if (!pdata)
	516	return NULL;
	517
072e78b1	518	pdata->regulator = of_get_regulator_init_data(dev, np, desc);
91f23d8f HS	519
	520	ret = of_property_read_u32(np, "fcs,suspend-voltage-selector",
	521	&tmp);
	522	if (!ret)
	523	pdata->sleep_vsel_id = tmp;
	524
	525	return pdata;
	526	}
	527
5e97d7e8	528	static const struct of_device_id __maybe_unused fan53555_dt_ids[] = {
91f23d8f	529	{
f2a9eb97 BA	530	.compatible = "fcs,fan53526",
	531	.data = (void *)FAN53526_VENDOR_FAIRCHILD,
	532	}, {
91f23d8f	533	.compatible = "fcs,fan53555",
ee30928a HS	534	.data = (void *)FAN53555_VENDOR_FAIRCHILD
	535	}, {
	536	.compatible = "silergy,syr827",
	537	.data = (void *)FAN53555_VENDOR_SILERGY,
	538	}, {
	539	.compatible = "silergy,syr828",
	540	.data = (void *)FAN53555_VENDOR_SILERGY,
914df8fa JC	541	}, {
914df8fa JC	542	.compatible = "tcs,tcs4525",
b3cc8ec0	543	.data = (void *)FAN53526_VENDOR_TCS
5eee5ece RH	544	}, {
	545	.compatible = "tcs,tcs4526",
	546	.data = (void *)FAN53526_VENDOR_TCS
91f23d8f HS	547	},
	548	{ }
	549	};
	550	MODULE_DEVICE_TABLE(of, fan53555_dt_ids);
	551
a5023574	552	static int fan53555_regulator_probe(struct i2c_client *client,
49d8c599 YZ	553	const struct i2c_device_id *id)
49d8c599 YZ	554	{
91f23d8f	555	struct device_node *np = client->dev.of_node;
49d8c599 YZ	556	struct fan53555_device_info *di;
	557	struct fan53555_platform_data *pdata;
	558	struct regulator_config config = { };
a69929c7	559	struct regmap *regmap;
49d8c599 YZ	560	unsigned int val;
	561	int ret;
	562
072e78b1 JMC	563	di = devm_kzalloc(&client->dev, sizeof(struct fan53555_device_info),
	564	GFP_KERNEL);
	565	if (!di)
	566	return -ENOMEM;
	567
dff91d0b	568	pdata = dev_get_platdata(&client->dev);
91f23d8f	569	if (!pdata)
072e78b1	570	pdata = fan53555_parse_dt(&client->dev, np, &di->desc);
91f23d8f	571
49d8c599 YZ	572	if (!pdata \|\| !pdata->regulator) {
	573	dev_err(&client->dev, "Platform data not found!\n");
	574	return -ENODEV;
	575	}
	576
e13426bf	577	di->regulator = pdata->regulator;
ee30928a	578	if (client->dev.of_node) {
d110e3e9 JZ	579	di->vendor =
d110e3e9 JZ	580	(unsigned long)of_device_get_match_data(&client->dev);
ee30928a	581	} else {
91f23d8f HS	582	/* if no ramp constraint set, get the pdata ramp_delay */
91f23d8f HS	583	if (!di->regulator->constraints.ramp_delay) {
87919e0c AL	584	if (pdata->slew_rate >= ARRAY_SIZE(slew_rates)) {
	585	dev_err(&client->dev, "Invalid slew_rate\n");
	586	return -EINVAL;
	587	}
dd7e71fb	588
91f23d8f	589	di->regulator->constraints.ramp_delay
87919e0c	590	= slew_rates[pdata->slew_rate];
91f23d8f	591	}
ee30928a HS	592
ee30928a HS	593	di->vendor = id->driver_data;
dd7e71fb HS	594	}
dd7e71fb HS	595
a69929c7 AL	596	regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
a69929c7 AL	597	if (IS_ERR(regmap)) {
49d8c599	598	dev_err(&client->dev, "Failed to allocate regmap!\n");
a69929c7	599	return PTR_ERR(regmap);
49d8c599 YZ	600	}
49d8c599 YZ	601	di->dev = &client->dev;
49d8c599 YZ	602	i2c_set_clientdata(client, di);
49d8c599 YZ	603	/* Get chip ID */
a69929c7	604	ret = regmap_read(regmap, FAN53555_ID1, &val);
49d8c599 YZ	605	if (ret < 0) {
49d8c599 YZ	606	dev_err(&client->dev, "Failed to get chip ID!\n");
145fe1e1	607	return ret;
49d8c599 YZ	608	}
	609	di->chip_id = val & DIE_ID;
	610	/* Get chip revision */
a69929c7	611	ret = regmap_read(regmap, FAN53555_ID2, &val);
49d8c599 YZ	612	if (ret < 0) {
49d8c599 YZ	613	dev_err(&client->dev, "Failed to get chip Rev!\n");
145fe1e1	614	return ret;
49d8c599 YZ	615	}
	616	di->chip_rev = val & DIE_REV;
	617	dev_info(&client->dev, "FAN53555 Option[%d] Rev[%d] Detected!\n",
	618	di->chip_id, di->chip_rev);
	619	/* Device init */
	620	ret = fan53555_device_setup(di, pdata);
	621	if (ret < 0) {
	622	dev_err(&client->dev, "Failed to setup device!\n");
	623	return ret;
	624	}
	625	/* Register regulator */
	626	config.dev = di->dev;
	627	config.init_data = di->regulator;
a69929c7	628	config.regmap = regmap;
49d8c599	629	config.driver_data = di;
91f23d8f HS	630	config.of_node = np;
91f23d8f HS	631
49d8c599 YZ	632	ret = fan53555_regulator_register(di, &config);
	633	if (ret < 0)
	634	dev_err(&client->dev, "Failed to register regulator!\n");
	635	return ret;
	636
	637	}
	638
49d8c599	639	static const struct i2c_device_id fan53555_id[] = {
ee30928a	640	{
f2a9eb97 BA	641	.name = "fan53526",
	642	.driver_data = FAN53526_VENDOR_FAIRCHILD
	643	}, {
ee30928a HS	644	.name = "fan53555",
	645	.driver_data = FAN53555_VENDOR_FAIRCHILD
	646	}, {
fc1111b8 GT	647	.name = "syr827",
	648	.driver_data = FAN53555_VENDOR_SILERGY
	649	}, {
	650	.name = "syr828",
ee30928a	651	.driver_data = FAN53555_VENDOR_SILERGY
914df8fa JC	652	}, {
914df8fa JC	653	.name = "tcs4525",
b3cc8ec0	654	.driver_data = FAN53526_VENDOR_TCS
5eee5ece RH	655	}, {
	656	.name = "tcs4526",
	657	.driver_data = FAN53526_VENDOR_TCS
ee30928a	658	},
49d8c599 YZ	659	{ },
49d8c599 YZ	660	};
e80c47bd	661	MODULE_DEVICE_TABLE(i2c, fan53555_id);
49d8c599 YZ	662
	663	static struct i2c_driver fan53555_regulator_driver = {
	664	.driver = {
	665	.name = "fan53555-regulator",
91f23d8f	666	.of_match_table = of_match_ptr(fan53555_dt_ids),
49d8c599 YZ	667	},
49d8c599 YZ	668	.probe = fan53555_regulator_probe,
49d8c599 YZ	669	.id_table = fan53555_id,
	670	};
	671
	672	module_i2c_driver(fan53555_regulator_driver);
	673
	674	MODULE_AUTHOR("Yunfan Zhang <yfzhang@marvell.com>");
	675	MODULE_DESCRIPTION("FAN53555 regulator driver");
	676	MODULE_LICENSE("GPL v2");