[linux-2.6-block.git] / drivers / hwmon / emc1403.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * emc1403.c - SMSC Thermal Driver
 *
 * Copyright (C) 2008 Intel Corp
 *
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/sysfs.h>
#include <linux/mutex.h>
#include <linux/regmap.h>
#include <linux/util_macros.h>

#define THERMAL_PID_REG		0xfd
#define THERMAL_SMSC_ID_REG	0xfe
#define THERMAL_REVISION_REG	0xff

enum emc1403_chip { emc1402, emc1403, emc1404, emc1428 };

struct thermal_data {
	enum emc1403_chip chip;
	struct regmap *regmap;
	struct mutex mutex;
};

static ssize_t power_state_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct thermal_data *data = dev_get_drvdata(dev);
	unsigned int val;
	int retval;

	retval = regmap_read(data->regmap, 0x03, &val);
	if (retval < 0)
		return retval;
	return sprintf(buf, "%d\n", !!(val & BIT(6)));
}

static ssize_t power_state_store(struct device *dev, struct device_attribute *attr,
				 const char *buf, size_t count)
{
	struct thermal_data *data = dev_get_drvdata(dev);
	unsigned long val;
	int retval;

	if (kstrtoul(buf, 10, &val))
		return -EINVAL;

	retval = regmap_update_bits(data->regmap, 0x03, BIT(6),
				    val ? BIT(6) : 0);
	if (retval < 0)
		return retval;
	return count;
}

static DEVICE_ATTR_RW(power_state);

static struct attribute *emc1403_attrs[] = {
	&dev_attr_power_state.attr,
	NULL
};
ATTRIBUTE_GROUPS(emc1403);

static int emc1403_detect(struct i2c_client *client,
			struct i2c_board_info *info)
{
	int id;
	/* Check if thermal chip is SMSC and EMC1403 or EMC1423 */

	id = i2c_smbus_read_byte_data(client, THERMAL_SMSC_ID_REG);
	if (id != 0x5d)
		return -ENODEV;

	id = i2c_smbus_read_byte_data(client, THERMAL_PID_REG);
	switch (id) {
	case 0x20:
		strscpy(info->type, "emc1402", I2C_NAME_SIZE);
		break;
	case 0x21:
		strscpy(info->type, "emc1403", I2C_NAME_SIZE);
		break;
	case 0x22:
		strscpy(info->type, "emc1422", I2C_NAME_SIZE);
		break;
	case 0x23:
		strscpy(info->type, "emc1423", I2C_NAME_SIZE);
		break;
	case 0x25:
		strscpy(info->type, "emc1404", I2C_NAME_SIZE);
		break;
	case 0x27:
		strscpy(info->type, "emc1424", I2C_NAME_SIZE);
		break;
	case 0x29:
		strscpy(info->type, "emc1428", I2C_NAME_SIZE);
		break;
	case 0x59:
		strscpy(info->type, "emc1438", I2C_NAME_SIZE);
		break;
	case 0x60:
		strscpy(info->type, "emc1442", I2C_NAME_SIZE);
		break;
	default:
		return -ENODEV;
	}

	id = i2c_smbus_read_byte_data(client, THERMAL_REVISION_REG);
	if (id < 0x01 || id > 0x04)
		return -ENODEV;

	return 0;
}

static bool emc1403_regmap_is_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case 0x00:	/* internal diode high byte */
	case 0x01:	/* external diode 1 high byte */
	case 0x02:	/* status */
	case 0x10:	/* external diode 1 low byte */
	case 0x1b:	/* external diode fault */
	case 0x23:	/* external diode 2 high byte */
	case 0x24:	/* external diode 2 low byte */
	case 0x29:	/* internal diode low byte */
	case 0x2a:	/* externl diode 3 high byte */
	case 0x2b:	/* external diode 3 low byte */
	case 0x35:	/* high limit status */
	case 0x36:	/* low limit status */
	case 0x37:	/* therm limit status */
	case 0x41:	/* external diode 4 high byte */
	case 0x42:	/* external diode 4 low byte */
	case 0x43:	/* external diode 5 high byte */
	case 0x44:	/* external diode 5 low byte */
	case 0x45:	/* external diode 6 high byte */
	case 0x46:	/* external diode 6 low byte */
	case 0x47:	/* external diode 7 high byte */
	case 0x48:	/* external diode 7 low byte */
		return true;
	default:
		return false;
	}
}

static const struct regmap_config emc1403_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.cache_type = REGCACHE_MAPLE,
	.volatile_reg = emc1403_regmap_is_volatile,
};

enum emc1403_reg_map {temp_min, temp_max, temp_crit, temp_input};

static u8 ema1403_temp_map[] = {
	[hwmon_temp_min] = temp_min,
	[hwmon_temp_max] = temp_max,
	[hwmon_temp_crit] = temp_crit,
	[hwmon_temp_input] = temp_input,
};

static u8 emc1403_temp_regs[][4] = {
	[0] = {
		[temp_min] = 0x06,
		[temp_max] = 0x05,
		[temp_crit] = 0x20,
		[temp_input] = 0x00,
	},
	[1] = {
		[temp_min] = 0x08,
		[temp_max] = 0x07,
		[temp_crit] = 0x19,
		[temp_input] = 0x01,
	},
	[2] = {
		[temp_min] = 0x16,
		[temp_max] = 0x15,
		[temp_crit] = 0x1a,
		[temp_input] = 0x23,
	},
	[3] = {
		[temp_min] = 0x2d,
		[temp_max] = 0x2c,
		[temp_crit] = 0x30,
		[temp_input] = 0x2a,
	},
	[4] = {
		[temp_min] = 0x51,
		[temp_max] = 0x50,
		[temp_crit] = 0x64,
		[temp_input] = 0x41,
	},
	[5] = {
		[temp_min] = 0x55,
		[temp_max] = 0x54,
		[temp_crit] = 0x65,
		[temp_input] = 0x43
	},
	[6] = {
		[temp_min] = 0x59,
		[temp_max] = 0x58,
		[temp_crit] = 0x66,
		[temp_input] = 0x45,
	},
	[7] = {
		[temp_min] = 0x5d,
		[temp_max] = 0x5c,
		[temp_crit] = 0x67,
		[temp_input] = 0x47,
	},
};

static s8 emc1403_temp_regs_low[][4] = {
	[0] = {
		[temp_min] = -1,
		[temp_max] = -1,
		[temp_crit] = -1,
		[temp_input] = 0x29,
	},
	[1] = {
		[temp_min] = 0x14,
		[temp_max] = 0x13,
		[temp_crit] = -1,
		[temp_input] = 0x10,
	},
	[2] = {
		[temp_min] = 0x18,
		[temp_max] = 0x17,
		[temp_crit] = -1,
		[temp_input] = 0x24,
	},
	[3] = {
		[temp_min] = 0x2f,
		[temp_max] = 0x2e,
		[temp_crit] = -1,
		[temp_input] = 0x2b,
	},
	[4] = {
		[temp_min] = 0x53,
		[temp_max] = 0x52,
		[temp_crit] = -1,
		[temp_input] = 0x42,
	},
	[5] = {
		[temp_min] = 0x57,
		[temp_max] = 0x56,
		[temp_crit] = -1,
		[temp_input] = 0x44,
	},
	[6] = {
		[temp_min] = 0x5b,
		[temp_max] = 0x5a,
		[temp_crit] = -1,
		[temp_input] = 0x46,
	},
	[7] = {
		[temp_min] = 0x5f,
		[temp_max] = 0x5e,
		[temp_crit] = -1,
		[temp_input] = 0x48,
	},
};

static int __emc1403_get_temp(struct thermal_data *data, int channel,
			      enum emc1403_reg_map map, long *val)
{
	unsigned int regvalh;
	unsigned int regvall = 0;
	int ret;
	s8 reg;

	ret = regmap_read(data->regmap, emc1403_temp_regs[channel][map], &regvalh);
	if (ret < 0)
		return ret;

	reg = emc1403_temp_regs_low[channel][map];
	if (reg >= 0) {
		ret = regmap_read(data->regmap, reg, &regvall);
		if (ret < 0)
			return ret;
	}

	if (data->chip == emc1428)
		*val = sign_extend32((regvalh << 3) | (regvall >> 5), 10) * 125;
	else
		*val = ((regvalh << 3) | (regvall >> 5)) * 125;

	return 0;
}

static int emc1403_get_temp(struct thermal_data *data, int channel,
			    enum emc1403_reg_map map, long *val)
{
	int ret;

	mutex_lock(&data->mutex);
	ret = __emc1403_get_temp(data, channel, map, val);
	mutex_unlock(&data->mutex);

	return ret;
}

static int emc1403_get_hyst(struct thermal_data *data, int channel,
			    enum emc1403_reg_map map, long *val)
{
	int hyst, ret;
	long limit;

	mutex_lock(&data->mutex);
	ret = __emc1403_get_temp(data, channel, map, &limit);
	if (ret < 0)
		goto unlock;
	ret = regmap_read(data->regmap, 0x21, &hyst);
	if (ret < 0)
		goto unlock;
	if (map == temp_min)
		*val = limit + hyst * 1000;
	else
		*val = limit - hyst * 1000;
unlock:
	mutex_unlock(&data->mutex);
	return ret;
}

static int emc1403_temp_read(struct thermal_data *data, u32 attr, int channel, long *val)
{
	unsigned int regval;
	int ret;

	switch (attr) {
	case hwmon_temp_min:
	case hwmon_temp_max:
	case hwmon_temp_crit:
	case hwmon_temp_input:
		ret = emc1403_get_temp(data, channel, ema1403_temp_map[attr], val);
		break;
	case hwmon_temp_min_hyst:
		ret = emc1403_get_hyst(data, channel, temp_min, val);
		break;
	case hwmon_temp_max_hyst:
		ret = emc1403_get_hyst(data, channel, temp_max, val);
		break;
	case hwmon_temp_crit_hyst:
		ret = emc1403_get_hyst(data, channel, temp_crit, val);
		break;
	case hwmon_temp_min_alarm:
		if (data->chip == emc1402) {
			ret = regmap_read(data->regmap, 0x02, &regval);
			if (ret < 0)
				break;
			*val = !!(regval & BIT(5 - 2 * channel));
		} else {
			ret = regmap_read(data->regmap, 0x36, &regval);
			if (ret < 0)
				break;
			*val = !!(regval & BIT(channel));
		}
		break;
	case hwmon_temp_max_alarm:
		if (data->chip == emc1402) {
			ret = regmap_read(data->regmap, 0x02, &regval);
			if (ret < 0)
				break;
			*val = !!(regval & BIT(6 - 2 * channel));
		} else {
			ret = regmap_read(data->regmap, 0x35, &regval);
			if (ret < 0)
				break;
			*val = !!(regval & BIT(channel));
		}
		break;
	case hwmon_temp_crit_alarm:
		if (data->chip == emc1402) {
			ret = regmap_read(data->regmap, 0x02, &regval);
			if (ret < 0)
				break;
			*val = !!(regval & BIT(channel));
		} else {
			ret = regmap_read(data->regmap, 0x37, &regval);
			if (ret < 0)
				break;
			*val = !!(regval & BIT(channel));
		}
		break;
	case hwmon_temp_fault:
		ret = regmap_read(data->regmap, 0x1b, &regval);
		if (ret < 0)
			break;
		*val = !!(regval & BIT(channel));
		break;
	default:
		return -EOPNOTSUPP;
	}
	return ret;
}

static int emc1403_get_convrate(struct thermal_data *data, long *val)
{
	unsigned int convrate;
	int ret;

	ret = regmap_read(data->regmap, 0x04, &convrate);
	if (ret < 0)
		return ret;
	if (convrate > 10)
		convrate = 4;

	*val = 16000 >> convrate;
	return 0;
}

static int emc1403_chip_read(struct thermal_data *data, u32 attr, long *val)
{
	switch (attr) {
	case hwmon_chip_update_interval:
		return emc1403_get_convrate(data, val);
	default:
		return -EOPNOTSUPP;
	}
}

static int emc1403_read(struct device *dev, enum hwmon_sensor_types type,
			u32 attr, int channel, long *val)
{
	struct thermal_data *data = dev_get_drvdata(dev);

	switch (type) {
	case hwmon_temp:
		return emc1403_temp_read(data, attr, channel, val);
	case hwmon_chip:
		return emc1403_chip_read(data, attr, val);
	default:
		return -EOPNOTSUPP;
	}
}

static int emc1403_set_hyst(struct thermal_data *data, long val)
{
	int hyst, ret;
	long limit;

	if (data->chip == emc1428)
		val = clamp_val(val, -128000, 127000);
	else
		val = clamp_val(val, 0, 255000);

	mutex_lock(&data->mutex);
	ret = __emc1403_get_temp(data, 0, temp_crit, &limit);
	if (ret < 0)
		goto unlock;

	hyst = limit - val;
	if (data->chip == emc1428)
		hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 127);
	else
		hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 255);
	ret = regmap_write(data->regmap, 0x21, hyst);
unlock:
	mutex_unlock(&data->mutex);
	return ret;
}

static int emc1403_set_temp(struct thermal_data *data, int channel,
			    enum emc1403_reg_map map, long val)
{
	unsigned int regval;
	int ret;
	u8 regh;
	s8 regl;

	regh = emc1403_temp_regs[channel][map];
	regl = emc1403_temp_regs_low[channel][map];

	mutex_lock(&data->mutex);
	if (regl >= 0) {
		if (data->chip == emc1428)
			val = clamp_val(val, -128000, 127875);
		else
			val = clamp_val(val, 0, 255875);
		regval = DIV_ROUND_CLOSEST(val, 125);
		ret = regmap_write(data->regmap, regh, (regval >> 3) & 0xff);
		if (ret < 0)
			goto unlock;
		ret = regmap_write(data->regmap, regl, (regval & 0x07) << 5);
	} else {
		if (data->chip == emc1428)
			val = clamp_val(val, -128000, 127000);
		else
			val = clamp_val(val, 0, 255000);
		regval = DIV_ROUND_CLOSEST(val, 1000);
		ret = regmap_write(data->regmap, regh, regval);
	}
unlock:
	mutex_unlock(&data->mutex);
	return ret;
}

static int emc1403_temp_write(struct thermal_data *data, u32 attr, int channel, long val)
{
	switch (attr) {
	case hwmon_temp_min:
	case hwmon_temp_max:
	case hwmon_temp_crit:
		return emc1403_set_temp(data, channel, ema1403_temp_map[attr], val);
	case hwmon_temp_crit_hyst:
		return emc1403_set_hyst(data, val);
	default:
		return -EOPNOTSUPP;
	}
}

/* Lookup table for temperature conversion times in msec */
static const u16 ina3221_conv_time[] = {
	16000, 8000, 4000, 2000, 1000, 500, 250, 125, 62, 31, 16
};

static int emc1403_set_convrate(struct thermal_data *data, unsigned int interval)
{
	int convrate;

	convrate = find_closest_descending(interval, ina3221_conv_time,
					   ARRAY_SIZE(ina3221_conv_time));
	return regmap_write(data->regmap, 0x04, convrate);
}

static int emc1403_chip_write(struct thermal_data *data, u32 attr, long val)
{
	switch (attr) {
	case hwmon_chip_update_interval:
		return emc1403_set_convrate(data, clamp_val(val, 0, 100000));
	default:
		return -EOPNOTSUPP;
	}
}

static int emc1403_write(struct device *dev, enum hwmon_sensor_types type,
			 u32 attr, int channel, long val)
{
	struct thermal_data *data = dev_get_drvdata(dev);

	switch (type) {
	case hwmon_temp:
		return emc1403_temp_write(data, attr, channel, val);
	case hwmon_chip:
		return emc1403_chip_write(data, attr, val);
	default:
		return -EOPNOTSUPP;
	}
}

static umode_t emc1403_temp_is_visible(const void *_data, u32 attr, int channel)
{
	const struct thermal_data *data = _data;

	if (data->chip == emc1402 && channel > 1)
		return 0;
	if (data->chip == emc1403 && channel > 2)
		return 0;
	if (data->chip != emc1428 && channel > 3)
		return 0;

	switch (attr) {
	case hwmon_temp_input:
	case hwmon_temp_min_alarm:
	case hwmon_temp_max_alarm:
	case hwmon_temp_crit_alarm:
	case hwmon_temp_fault:
	case hwmon_temp_min_hyst:
	case hwmon_temp_max_hyst:
		return 0444;
	case hwmon_temp_min:
	case hwmon_temp_max:
	case hwmon_temp_crit:
		return 0644;
	case hwmon_temp_crit_hyst:
		if (channel == 0)
			return 0644;
		return 0444;
	default:
		return 0;
	}
}

static umode_t emc1403_chip_is_visible(const void *_data, u32 attr)
{
	switch (attr) {
	case hwmon_chip_update_interval:
		return 0644;
	default:
		return 0;
	}
}

static umode_t emc1403_is_visible(const void *data, enum hwmon_sensor_types type,
				  u32 attr, int channel)
{
	switch (type) {
	case hwmon_temp:
		return emc1403_temp_is_visible(data, attr, channel);
	case hwmon_chip:
		return emc1403_chip_is_visible(data, attr);
	default:
		return 0;
	}
}

static const struct hwmon_channel_info * const emc1403_info[] = {
	HWMON_CHANNEL_INFO(chip, HWMON_C_UPDATE_INTERVAL),
	HWMON_CHANNEL_INFO(temp,
			   HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
			   HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST |
			   HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
			   HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM,
			   HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
			   HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST |
			   HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
			   HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT,
			   HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
			   HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST |
			   HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
			   HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT,
			   HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
			   HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST |
			   HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
			   HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT,
			   HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
			   HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST |
			   HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
			   HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT,
			   HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
			   HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST |
			   HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
			   HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT,
			   HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
			   HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST |
			   HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
			   HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT,
			   HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
			   HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST |
			   HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
			   HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT
			   ),
	NULL
};

static const struct hwmon_ops emc1403_hwmon_ops = {
	.is_visible = emc1403_is_visible,
	.read = emc1403_read,
	.write = emc1403_write,
};

static const struct hwmon_chip_info emc1403_chip_info = {
	.ops = &emc1403_hwmon_ops,
	.info = emc1403_info,
};

/* Last digit of chip name indicates number of channels */
static const struct i2c_device_id emc1403_idtable[] = {
	{ "emc1402", emc1402 },
	{ "emc1403", emc1403 },
	{ "emc1404", emc1404 },
	{ "emc1412", emc1402 },
	{ "emc1413", emc1403 },
	{ "emc1414", emc1404 },
	{ "emc1422", emc1402 },
	{ "emc1423", emc1403 },
	{ "emc1424", emc1404 },
	{ "emc1428", emc1428 },
	{ "emc1438", emc1428 },
	{ "emc1442", emc1402 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, emc1403_idtable);

static int emc1403_probe(struct i2c_client *client)
{
	struct thermal_data *data;
	struct device *hwmon_dev;
	const struct i2c_device_id *id = i2c_match_id(emc1403_idtable, client);

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

	data->chip = id->driver_data;
	data->regmap = devm_regmap_init_i2c(client, &emc1403_regmap_config);
	if (IS_ERR(data->regmap))
		return PTR_ERR(data->regmap);

	mutex_init(&data->mutex);

	hwmon_dev = devm_hwmon_device_register_with_info(&client->dev,
							 client->name, data,
							 &emc1403_chip_info,
							 emc1403_groups);
	return PTR_ERR_OR_ZERO(hwmon_dev);
}

static const unsigned short emc1403_address_list[] = {
	0x18, 0x1c, 0x29, 0x3c, 0x4c, 0x4d, 0x5c, I2C_CLIENT_END
};

static struct i2c_driver sensor_emc1403 = {
	.class = I2C_CLASS_HWMON,
	.driver = {
		.name = "emc1403",
	},
	.detect = emc1403_detect,
	.probe = emc1403_probe,
	.id_table = emc1403_idtable,
	.address_list = emc1403_address_list,
};

module_i2c_driver(sensor_emc1403);

MODULE_AUTHOR("Kalhan Trisal <kalhan.trisal@intel.com");
MODULE_DESCRIPTION("emc1403 Thermal Driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
873e65bc	1	// SPDX-License-Identifier: GPL-2.0-only
dac6831e KT	2	/*
	3	* emc1403.c - SMSC Thermal Driver
	4	*
	5	* Copyright (C) 2008 Intel Corp
	6	*
	7	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	8	*
dac6831e	9	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dac6831e KT	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/init.h>
	14	#include <linux/slab.h>
	15	#include <linux/i2c.h>
	16	#include <linux/hwmon.h>
	17	#include <linux/hwmon-sysfs.h>
	18	#include <linux/err.h>
	19	#include <linux/sysfs.h>
	20	#include <linux/mutex.h>
4cab259f	21	#include <linux/regmap.h>
6a815781	22	#include <linux/util_macros.h>
dac6831e KT	23
	24	#define THERMAL_PID_REG 0xfd
	25	#define THERMAL_SMSC_ID_REG 0xfe
	26	#define THERMAL_REVISION_REG 0xff
	27
c8233784	28	enum emc1403_chip { emc1402, emc1403, emc1404, emc1428 };
be7f5c4d	29
dac6831e	30	struct thermal_data {
1094360d	31	enum emc1403_chip chip;
4cab259f	32	struct regmap *regmap;
dac6831e	33	struct mutex mutex;
dac6831e KT	34	};
dac6831e KT	35
1094360d	36	static ssize_t power_state_show(struct device dev, struct device_attribute attr, char *buf)
dac6831e	37	{
454aee17	38	struct thermal_data *data = dev_get_drvdata(dev);
4cab259f	39	unsigned int val;
454aee17	40	int retval;
dac6831e	41
1094360d	42	retval = regmap_read(data->regmap, 0x03, &val);
dac6831e KT	43	if (retval < 0)
dac6831e KT	44	return retval;
1094360d	45	return sprintf(buf, "%d\n", !!(val & BIT(6)));
dac6831e KT	46	}
dac6831e KT	47
1094360d GR	48	static ssize_t power_state_store(struct device dev, struct device_attribute attr,
1094360d GR	49	const char *buf, size_t count)
dac6831e	50	{
454aee17	51	struct thermal_data *data = dev_get_drvdata(dev);
960f12f4 AC	52	unsigned long val;
	53	int retval;
	54
179c4fdb	55	if (kstrtoul(buf, 10, &val))
960f12f4 AC	56	return -EINVAL;
960f12f4 AC	57
1094360d GR	58	retval = regmap_update_bits(data->regmap, 0x03, BIT(6),
1094360d GR	59	val ? BIT(6) : 0);
960f12f4	60	if (retval < 0)
4cab259f GR	61	return retval;
4cab259f GR	62	return count;
960f12f4 AC	63	}
960f12f4 AC	64
1094360d	65	static DEVICE_ATTR_RW(power_state);
be7f5c4d JG	66
be7f5c4d JG	67	static struct attribute *emc1403_attrs[] = {
1094360d	68	&dev_attr_power_state.attr,
0011ddfe GR	69	NULL
0011ddfe GR	70	};
1094360d	71	ATTRIBUTE_GROUPS(emc1403);
03f49f64	72
dac6831e KT	73	static int emc1403_detect(struct i2c_client *client,
	74	struct i2c_board_info *info)
	75	{
	76	int id;
7a1b76f2	77	/* Check if thermal chip is SMSC and EMC1403 or EMC1423 */
dac6831e KT	78
	79	id = i2c_smbus_read_byte_data(client, THERMAL_SMSC_ID_REG);
	80	if (id != 0x5d)
	81	return -ENODEV;
	82
7a1b76f2 JL	83	id = i2c_smbus_read_byte_data(client, THERMAL_PID_REG);
7a1b76f2 JL	84	switch (id) {
be7f5c4d	85	case 0x20:
f2f394db	86	strscpy(info->type, "emc1402", I2C_NAME_SIZE);
be7f5c4d	87	break;
7a1b76f2	88	case 0x21:
f2f394db	89	strscpy(info->type, "emc1403", I2C_NAME_SIZE);
7a1b76f2	90	break;
be7f5c4d	91	case 0x22:
f2f394db	92	strscpy(info->type, "emc1422", I2C_NAME_SIZE);
be7f5c4d	93	break;
7a1b76f2	94	case 0x23:
f2f394db	95	strscpy(info->type, "emc1423", I2C_NAME_SIZE);
7a1b76f2	96	break;
0011ddfe	97	case 0x25:
f2f394db	98	strscpy(info->type, "emc1404", I2C_NAME_SIZE);
0011ddfe GR	99	break;
0011ddfe GR	100	case 0x27:
f2f394db	101	strscpy(info->type, "emc1424", I2C_NAME_SIZE);
0011ddfe	102	break;
c8233784 LPM	103	case 0x29:
	104	strscpy(info->type, "emc1428", I2C_NAME_SIZE);
	105	break;
	106	case 0x59:
	107	strscpy(info->type, "emc1438", I2C_NAME_SIZE);
	108	break;
9350163a DCC	109	case 0x60:
	110	strscpy(info->type, "emc1442", I2C_NAME_SIZE);
	111	break;
7a1b76f2	112	default:
dac6831e	113	return -ENODEV;
7a1b76f2	114	}
dac6831e KT	115
dac6831e KT	116	id = i2c_smbus_read_byte_data(client, THERMAL_REVISION_REG);
3a18e139	117	if (id < 0x01 \|\| id > 0x04)
dac6831e KT	118	return -ENODEV;
dac6831e KT	119
dac6831e KT	120	return 0;
	121	}
	122
4cab259f GR	123	static bool emc1403_regmap_is_volatile(struct device *dev, unsigned int reg)
	124	{
	125	switch (reg) {
	126	case 0x00: /* internal diode high byte */
	127	case 0x01: /* external diode 1 high byte */
	128	case 0x02: /* status */
	129	case 0x10: /* external diode 1 low byte */
	130	case 0x1b: /* external diode fault */
	131	case 0x23: /* external diode 2 high byte */
	132	case 0x24: /* external diode 2 low byte */
	133	case 0x29: /* internal diode low byte */
	134	case 0x2a: /* externl diode 3 high byte */
	135	case 0x2b: /* external diode 3 low byte */
	136	case 0x35: /* high limit status */
	137	case 0x36: /* low limit status */
	138	case 0x37: /* therm limit status */
c8233784 LPM	139	case 0x41: /* external diode 4 high byte */
	140	case 0x42: /* external diode 4 low byte */
	141	case 0x43: /* external diode 5 high byte */
	142	case 0x44: /* external diode 5 low byte */
	143	case 0x45: /* external diode 6 high byte */
	144	case 0x46: /* external diode 6 low byte */
	145	case 0x47: /* external diode 7 high byte */
	146	case 0x48: /* external diode 7 low byte */
4cab259f GR	147	return true;
	148	default:
	149	return false;
	150	}
	151	}
	152
034b44b4	153	static const struct regmap_config emc1403_regmap_config = {
4cab259f GR	154	.reg_bits = 8,
4cab259f GR	155	.val_bits = 8,
9c440cf0	156	.cache_type = REGCACHE_MAPLE,
4cab259f GR	157	.volatile_reg = emc1403_regmap_is_volatile,
	158	};
	159
1094360d	160	enum emc1403_reg_map {temp_min, temp_max, temp_crit, temp_input};
67487038	161
1094360d GR	162	static u8 ema1403_temp_map[] = {
	163	[hwmon_temp_min] = temp_min,
	164	[hwmon_temp_max] = temp_max,
	165	[hwmon_temp_crit] = temp_crit,
	166	[hwmon_temp_input] = temp_input,
	167	};
	168
	169	static u8 emc1403_temp_regs[][4] = {
	170	[0] = {
	171	[temp_min] = 0x06,
	172	[temp_max] = 0x05,
	173	[temp_crit] = 0x20,
	174	[temp_input] = 0x00,
	175	},
	176	[1] = {
	177	[temp_min] = 0x08,
	178	[temp_max] = 0x07,
	179	[temp_crit] = 0x19,
	180	[temp_input] = 0x01,
	181	},
	182	[2] = {
	183	[temp_min] = 0x16,
	184	[temp_max] = 0x15,
	185	[temp_crit] = 0x1a,
	186	[temp_input] = 0x23,
	187	},
	188	[3] = {
	189	[temp_min] = 0x2d,
	190	[temp_max] = 0x2c,
	191	[temp_crit] = 0x30,
	192	[temp_input] = 0x2a,
	193	},
c8233784 LPM	194	[4] = {
	195	[temp_min] = 0x51,
	196	[temp_max] = 0x50,
	197	[temp_crit] = 0x64,
	198	[temp_input] = 0x41,
	199	},
	200	[5] = {
	201	[temp_min] = 0x55,
	202	[temp_max] = 0x54,
	203	[temp_crit] = 0x65,
	204	[temp_input] = 0x43
	205	},
	206	[6] = {
	207	[temp_min] = 0x59,
	208	[temp_max] = 0x58,
	209	[temp_crit] = 0x66,
	210	[temp_input] = 0x45,
	211	},
	212	[7] = {
	213	[temp_min] = 0x5d,
	214	[temp_max] = 0x5c,
	215	[temp_crit] = 0x67,
	216	[temp_input] = 0x47,
	217	},
1094360d GR	218	};
1094360d GR	219
e77b204a GR	220	static s8 emc1403_temp_regs_low[][4] = {
	221	[0] = {
	222	[temp_min] = -1,
	223	[temp_max] = -1,
	224	[temp_crit] = -1,
	225	[temp_input] = 0x29,
	226	},
	227	[1] = {
	228	[temp_min] = 0x14,
	229	[temp_max] = 0x13,
	230	[temp_crit] = -1,
	231	[temp_input] = 0x10,
	232	},
	233	[2] = {
	234	[temp_min] = 0x18,
	235	[temp_max] = 0x17,
	236	[temp_crit] = -1,
	237	[temp_input] = 0x24,
	238	},
	239	[3] = {
	240	[temp_min] = 0x2f,
	241	[temp_max] = 0x2e,
	242	[temp_crit] = -1,
	243	[temp_input] = 0x2b,
	244	},
c8233784 LPM	245	[4] = {
	246	[temp_min] = 0x53,
	247	[temp_max] = 0x52,
	248	[temp_crit] = -1,
	249	[temp_input] = 0x42,
	250	},
	251	[5] = {
	252	[temp_min] = 0x57,
	253	[temp_max] = 0x56,
	254	[temp_crit] = -1,
	255	[temp_input] = 0x44,
	256	},
	257	[6] = {
	258	[temp_min] = 0x5b,
	259	[temp_max] = 0x5a,
	260	[temp_crit] = -1,
	261	[temp_input] = 0x46,
	262	},
	263	[7] = {
	264	[temp_min] = 0x5f,
	265	[temp_max] = 0x5e,
	266	[temp_crit] = -1,
	267	[temp_input] = 0x48,
	268	},
e77b204a GR	269	};
e77b204a GR	270
1094360d GR	271	static int __emc1403_get_temp(struct thermal_data *data, int channel,
1094360d GR	272	enum emc1403_reg_map map, long *val)
dac6831e	273	{
c8233784 LPM	274	unsigned int regvalh;
c8233784 LPM	275	unsigned int regvall = 0;
1094360d	276	int ret;
e77b204a	277	s8 reg;
dac6831e	278
c8233784	279	ret = regmap_read(data->regmap, emc1403_temp_regs[channel][map], &regvalh);
1094360d GR	280	if (ret < 0)
1094360d GR	281	return ret;
dac6831e	282
e77b204a GR	283	reg = emc1403_temp_regs_low[channel][map];
e77b204a GR	284	if (reg >= 0) {
c8233784	285	ret = regmap_read(data->regmap, reg, &regvall);
e77b204a GR	286	if (ret < 0)
e77b204a GR	287	return ret;
e77b204a	288	}
c8233784 LPM	289
	290	if (data->chip == emc1428)
	291	val = sign_extend32((regvalh << 3) \| (regvall >> 5), 10) 125;
	292	else
	293	val = ((regvalh << 3) \| (regvall >> 5)) 125;
	294
1094360d GR	295	return 0;
1094360d GR	296	}
4cab259f	297
1094360d GR	298	static int emc1403_get_temp(struct thermal_data *data, int channel,
	299	enum emc1403_reg_map map, long *val)
	300	{
	301	int ret;
	302
	303	mutex_lock(&data->mutex);
	304	ret = __emc1403_get_temp(data, channel, map, val);
	305	mutex_unlock(&data->mutex);
	306
	307	return ret;
	308	}
	309
	310	static int emc1403_get_hyst(struct thermal_data *data, int channel,
	311	enum emc1403_reg_map map, long *val)
	312	{
	313	int hyst, ret;
	314	long limit;
	315
	316	mutex_lock(&data->mutex);
	317	ret = __emc1403_get_temp(data, channel, map, &limit);
	318	if (ret < 0)
	319	goto unlock;
	320	ret = regmap_read(data->regmap, 0x21, &hyst);
	321	if (ret < 0)
	322	goto unlock;
	323	if (map == temp_min)
	324	val = limit + hyst 1000;
	325	else
	326	val = limit - hyst 1000;
	327	unlock:
	328	mutex_unlock(&data->mutex);
	329	return ret;
	330	}
	331
	332	static int emc1403_temp_read(struct thermal_data data, u32 attr, int channel, long val)
	333	{
	334	unsigned int regval;
	335	int ret;
	336
	337	switch (attr) {
	338	case hwmon_temp_min:
	339	case hwmon_temp_max:
	340	case hwmon_temp_crit:
	341	case hwmon_temp_input:
	342	ret = emc1403_get_temp(data, channel, ema1403_temp_map[attr], val);
	343	break;
	344	case hwmon_temp_min_hyst:
	345	ret = emc1403_get_hyst(data, channel, temp_min, val);
	346	break;
	347	case hwmon_temp_max_hyst:
	348	ret = emc1403_get_hyst(data, channel, temp_max, val);
	349	break;
	350	case hwmon_temp_crit_hyst:
	351	ret = emc1403_get_hyst(data, channel, temp_crit, val);
	352	break;
	353	case hwmon_temp_min_alarm:
	354	if (data->chip == emc1402) {
	355	ret = regmap_read(data->regmap, 0x02, &regval);
	356	if (ret < 0)
	357	break;
	358	val = !!(regval & BIT(5 - 2 channel));
	359	} else {
	360	ret = regmap_read(data->regmap, 0x36, &regval);
	361	if (ret < 0)
362	break;
363	*val = !!(regval & BIT(channel));
364	}
365	break;
366	case hwmon_temp_max_alarm:
367	if (data->chip == emc1402) {
368	ret = regmap_read(data->regmap, 0x02, &regval);
369	if (ret < 0)
370	break;
371	val = !!(regval & BIT(6 - 2 channel));
372	} else {
373	ret = regmap_read(data->regmap, 0x35, &regval);
374	if (ret < 0)
375	break;
376	*val = !!(regval & BIT(channel));
377	}
378	break;
379	case hwmon_temp_crit_alarm:
380	if (data->chip == emc1402) {
381	ret = regmap_read(data->regmap, 0x02, &regval);
382	if (ret < 0)
383	break;
384	*val = !!(regval & BIT(channel));
385	} else {
386	ret = regmap_read(data->regmap, 0x37, &regval);
387	if (ret < 0)
388	break;
389	*val = !!(regval & BIT(channel));
390	}
391	break;
392	case hwmon_temp_fault:
393	ret = regmap_read(data->regmap, 0x1b, &regval);
394	if (ret < 0)
395	break;
396	*val = !!(regval & BIT(channel));
397	break;
398	default:
399	return -EOPNOTSUPP;
400	}
401	return ret;
402	}
403
6a815781 GR	404	static int emc1403_get_convrate(struct thermal_data data, long val)
	405	{
	406	unsigned int convrate;
	407	int ret;
	408
	409	ret = regmap_read(data->regmap, 0x04, &convrate);
	410	if (ret < 0)
	411	return ret;
	412	if (convrate > 10)
	413	convrate = 4;
	414
	415	*val = 16000 >> convrate;
	416	return 0;
	417	}
	418
	419	static int emc1403_chip_read(struct thermal_data data, u32 attr, long val)
	420	{
	421	switch (attr) {
	422	case hwmon_chip_update_interval:
	423	return emc1403_get_convrate(data, val);
	424	default:
	425	return -EOPNOTSUPP;
	426	}
	427	}
	428
1094360d GR	429	static int emc1403_read(struct device *dev, enum hwmon_sensor_types type,
	430	u32 attr, int channel, long *val)
	431	{
	432	struct thermal_data *data = dev_get_drvdata(dev);
dac6831e	433
1094360d GR	434	switch (type) {
	435	case hwmon_temp:
	436	return emc1403_temp_read(data, attr, channel, val);
6a815781 GR	437	case hwmon_chip:
6a815781 GR	438	return emc1403_chip_read(data, attr, val);
1094360d GR	439	default:
1094360d GR	440	return -EOPNOTSUPP;
be7f5c4d	441	}
1094360d	442	}
0011ddfe	443
1094360d GR	444	static int emc1403_set_hyst(struct thermal_data *data, long val)
	445	{
	446	int hyst, ret;
	447	long limit;
03f49f64	448
c8233784 LPM	449	if (data->chip == emc1428)
	450	val = clamp_val(val, -128000, 127000);
	451	else
	452	val = clamp_val(val, 0, 255000);
dac6831e	453
1094360d GR	454	mutex_lock(&data->mutex);
	455	ret = __emc1403_get_temp(data, 0, temp_crit, &limit);
	456	if (ret < 0)
	457	goto unlock;
	458
	459	hyst = limit - val;
c8233784 LPM	460	if (data->chip == emc1428)
	461	hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 127);
	462	else
	463	hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 255);
1094360d GR	464	ret = regmap_write(data->regmap, 0x21, hyst);
	465	unlock:
	466	mutex_unlock(&data->mutex);
	467	return ret;
dac6831e KT	468	}
dac6831e KT	469
1094360d GR	470	static int emc1403_set_temp(struct thermal_data *data, int channel,
	471	enum emc1403_reg_map map, long val)
	472	{
	473	unsigned int regval;
	474	int ret;
e77b204a GR	475	u8 regh;
e77b204a GR	476	s8 regl;
1094360d	477
e77b204a GR	478	regh = emc1403_temp_regs[channel][map];
e77b204a GR	479	regl = emc1403_temp_regs_low[channel][map];
1094360d GR	480
1094360d GR	481	mutex_lock(&data->mutex);
e77b204a	482	if (regl >= 0) {
c8233784 LPM	483	if (data->chip == emc1428)
	484	val = clamp_val(val, -128000, 127875);
	485	else
	486	val = clamp_val(val, 0, 255875);
e77b204a	487	regval = DIV_ROUND_CLOSEST(val, 125);
c8233784	488	ret = regmap_write(data->regmap, regh, (regval >> 3) & 0xff);
e77b204a GR	489	if (ret < 0)
	490	goto unlock;
	491	ret = regmap_write(data->regmap, regl, (regval & 0x07) << 5);
	492	} else {
c8233784 LPM	493	if (data->chip == emc1428)
	494	val = clamp_val(val, -128000, 127000);
	495	else
	496	val = clamp_val(val, 0, 255000);
e77b204a GR	497	regval = DIV_ROUND_CLOSEST(val, 1000);
	498	ret = regmap_write(data->regmap, regh, regval);
	499	}
	500	unlock:
1094360d GR	501	mutex_unlock(&data->mutex);
	502	return ret;
	503	}
	504
	505	static int emc1403_temp_write(struct thermal_data *data, u32 attr, int channel, long val)
	506	{
	507	switch (attr) {
	508	case hwmon_temp_min:
	509	case hwmon_temp_max:
	510	case hwmon_temp_crit:
	511	return emc1403_set_temp(data, channel, ema1403_temp_map[attr], val);
	512	case hwmon_temp_crit_hyst:
	513	return emc1403_set_hyst(data, val);
	514	default:
	515	return -EOPNOTSUPP;
	516	}
	517	}
	518
6a815781 GR	519	/* Lookup table for temperature conversion times in msec */
	520	static const u16 ina3221_conv_time[] = {
	521	16000, 8000, 4000, 2000, 1000, 500, 250, 125, 62, 31, 16
	522	};
	523
	524	static int emc1403_set_convrate(struct thermal_data *data, unsigned int interval)
	525	{
	526	int convrate;
	527
	528	convrate = find_closest_descending(interval, ina3221_conv_time,
	529	ARRAY_SIZE(ina3221_conv_time));
	530	return regmap_write(data->regmap, 0x04, convrate);
	531	}
	532
	533	static int emc1403_chip_write(struct thermal_data *data, u32 attr, long val)
	534	{
	535	switch (attr) {
	536	case hwmon_chip_update_interval:
	537	return emc1403_set_convrate(data, clamp_val(val, 0, 100000));
	538	default:
	539	return -EOPNOTSUPP;
	540	}
	541	}
	542
1094360d GR	543	static int emc1403_write(struct device *dev, enum hwmon_sensor_types type,
	544	u32 attr, int channel, long val)
	545	{
	546	struct thermal_data *data = dev_get_drvdata(dev);
	547
	548	switch (type) {
	549	case hwmon_temp:
	550	return emc1403_temp_write(data, attr, channel, val);
6a815781 GR	551	case hwmon_chip:
6a815781 GR	552	return emc1403_chip_write(data, attr, val);
1094360d GR	553	default:
	554	return -EOPNOTSUPP;
	555	}
	556	}
	557
	558	static umode_t emc1403_temp_is_visible(const void *_data, u32 attr, int channel)
	559	{
	560	const struct thermal_data *data = _data;
	561
	562	if (data->chip == emc1402 && channel > 1)
	563	return 0;
	564	if (data->chip == emc1403 && channel > 2)
	565	return 0;
c8233784 LPM	566	if (data->chip != emc1428 && channel > 3)
c8233784 LPM	567	return 0;
1094360d GR	568
	569	switch (attr) {
	570	case hwmon_temp_input:
	571	case hwmon_temp_min_alarm:
	572	case hwmon_temp_max_alarm:
	573	case hwmon_temp_crit_alarm:
	574	case hwmon_temp_fault:
	575	case hwmon_temp_min_hyst:
	576	case hwmon_temp_max_hyst:
	577	return 0444;
	578	case hwmon_temp_min:
	579	case hwmon_temp_max:
	580	case hwmon_temp_crit:
	581	return 0644;
	582	case hwmon_temp_crit_hyst:
	583	if (channel == 0)
	584	return 0644;
	585	return 0444;
	586	default:
	587	return 0;
	588	}
	589	}
	590
6a815781 GR	591	static umode_t emc1403_chip_is_visible(const void *_data, u32 attr)
	592	{
	593	switch (attr) {
	594	case hwmon_chip_update_interval:
	595	return 0644;
	596	default:
	597	return 0;
	598	}
	599	}
	600
1094360d GR	601	static umode_t emc1403_is_visible(const void *data, enum hwmon_sensor_types type,
	602	u32 attr, int channel)
	603	{
	604	switch (type) {
	605	case hwmon_temp:
	606	return emc1403_temp_is_visible(data, attr, channel);
6a815781 GR	607	case hwmon_chip:
6a815781 GR	608	return emc1403_chip_is_visible(data, attr);
1094360d GR	609	default:
	610	return 0;
	611	}
	612	}
	613
	614	static const struct hwmon_channel_info * const emc1403_info[] = {
6a815781	615	HWMON_CHANNEL_INFO(chip, HWMON_C_UPDATE_INTERVAL),
1094360d GR	616	HWMON_CHANNEL_INFO(temp,
	617	HWMON_T_INPUT \| HWMON_T_MIN \| HWMON_T_MAX \|
	618	HWMON_T_CRIT \| HWMON_T_MIN_HYST \| HWMON_T_MAX_HYST \|
	619	HWMON_T_CRIT_HYST \| HWMON_T_MIN_ALARM \|
	620	HWMON_T_MAX_ALARM \| HWMON_T_CRIT_ALARM,
	621	HWMON_T_INPUT \| HWMON_T_MIN \| HWMON_T_MAX \|
	622	HWMON_T_CRIT \| HWMON_T_MIN_HYST \| HWMON_T_MAX_HYST \|
	623	HWMON_T_CRIT_HYST \| HWMON_T_MIN_ALARM \|
	624	HWMON_T_MAX_ALARM \| HWMON_T_CRIT_ALARM \| HWMON_T_FAULT,
	625	HWMON_T_INPUT \| HWMON_T_MIN \| HWMON_T_MAX \|
	626	HWMON_T_CRIT \| HWMON_T_MIN_HYST \| HWMON_T_MAX_HYST \|
	627	HWMON_T_CRIT_HYST \| HWMON_T_MIN_ALARM \|
	628	HWMON_T_MAX_ALARM \| HWMON_T_CRIT_ALARM \| HWMON_T_FAULT,
	629	HWMON_T_INPUT \| HWMON_T_MIN \| HWMON_T_MAX \|
	630	HWMON_T_CRIT \| HWMON_T_MIN_HYST \| HWMON_T_MAX_HYST \|
	631	HWMON_T_CRIT_HYST \| HWMON_T_MIN_ALARM \|
c8233784 LPM	632	HWMON_T_MAX_ALARM \| HWMON_T_CRIT_ALARM \| HWMON_T_FAULT,
	633	HWMON_T_INPUT \| HWMON_T_MIN \| HWMON_T_MAX \|
	634	HWMON_T_CRIT \| HWMON_T_MIN_HYST \| HWMON_T_MAX_HYST \|
	635	HWMON_T_CRIT_HYST \| HWMON_T_MIN_ALARM \|
	636	HWMON_T_MAX_ALARM \| HWMON_T_CRIT_ALARM \| HWMON_T_FAULT,
	637	HWMON_T_INPUT \| HWMON_T_MIN \| HWMON_T_MAX \|
	638	HWMON_T_CRIT \| HWMON_T_MIN_HYST \| HWMON_T_MAX_HYST \|
	639	HWMON_T_CRIT_HYST \| HWMON_T_MIN_ALARM \|
	640	HWMON_T_MAX_ALARM \| HWMON_T_CRIT_ALARM \| HWMON_T_FAULT,
	641	HWMON_T_INPUT \| HWMON_T_MIN \| HWMON_T_MAX \|
	642	HWMON_T_CRIT \| HWMON_T_MIN_HYST \| HWMON_T_MAX_HYST \|
	643	HWMON_T_CRIT_HYST \| HWMON_T_MIN_ALARM \|
	644	HWMON_T_MAX_ALARM \| HWMON_T_CRIT_ALARM \| HWMON_T_FAULT,
	645	HWMON_T_INPUT \| HWMON_T_MIN \| HWMON_T_MAX \|
	646	HWMON_T_CRIT \| HWMON_T_MIN_HYST \| HWMON_T_MAX_HYST \|
	647	HWMON_T_CRIT_HYST \| HWMON_T_MIN_ALARM \|
1094360d GR	648	HWMON_T_MAX_ALARM \| HWMON_T_CRIT_ALARM \| HWMON_T_FAULT
	649	),
	650	NULL
	651	};
	652
	653	static const struct hwmon_ops emc1403_hwmon_ops = {
	654	.is_visible = emc1403_is_visible,
	655	.read = emc1403_read,
	656	.write = emc1403_write,
	657	};
	658
	659	static const struct hwmon_chip_info emc1403_chip_info = {
	660	.ops = &emc1403_hwmon_ops,
	661	.info = emc1403_info,
dac6831e KT	662	};
dac6831e KT	663
be7f5c4d	664	/* Last digit of chip name indicates number of channels */
dac6831e	665	static const struct i2c_device_id emc1403_idtable[] = {
be7f5c4d JG	666	{ "emc1402", emc1402 },
	667	{ "emc1403", emc1403 },
	668	{ "emc1404", emc1404 },
51585bef GR	669	{ "emc1412", emc1402 },
	670	{ "emc1413", emc1403 },
	671	{ "emc1414", emc1404 },
be7f5c4d JG	672	{ "emc1422", emc1402 },
	673	{ "emc1423", emc1403 },
	674	{ "emc1424", emc1404 },
c8233784 LPM	675	{ "emc1428", emc1428 },
c8233784 LPM	676	{ "emc1438", emc1428 },
9350163a	677	{ "emc1442", emc1402 },
dac6831e KT	678	{ }
	679	};
	680	MODULE_DEVICE_TABLE(i2c, emc1403_idtable);
	681
1094360d GR	682	static int emc1403_probe(struct i2c_client *client)
	683	{
	684	struct thermal_data *data;
	685	struct device *hwmon_dev;
	686	const struct i2c_device_id *id = i2c_match_id(emc1403_idtable, client);
	687
	688	data = devm_kzalloc(&client->dev, sizeof(struct thermal_data),
	689	GFP_KERNEL);
	690	if (!data)
	691	return -ENOMEM;
	692
	693	data->chip = id->driver_data;
	694	data->regmap = devm_regmap_init_i2c(client, &emc1403_regmap_config);
	695	if (IS_ERR(data->regmap))
	696	return PTR_ERR(data->regmap);
	697
	698	mutex_init(&data->mutex);
	699
	700	hwmon_dev = devm_hwmon_device_register_with_info(&client->dev,
	701	client->name, data,
	702	&emc1403_chip_info,
	703	emc1403_groups);
	704	return PTR_ERR_OR_ZERO(hwmon_dev);
	705	}
	706
	707	static const unsigned short emc1403_address_list[] = {
	708	0x18, 0x1c, 0x29, 0x3c, 0x4c, 0x4d, 0x5c, I2C_CLIENT_END
	709	};
	710
dac6831e KT	711	static struct i2c_driver sensor_emc1403 = {
	712	.class = I2C_CLASS_HWMON,
	713	.driver = {
	714	.name = "emc1403",
	715	},
	716	.detect = emc1403_detect,
1975d167	717	.probe = emc1403_probe,
dac6831e KT	718	.id_table = emc1403_idtable,
	719	.address_list = emc1403_address_list,
	720	};
	721
f0967eea	722	module_i2c_driver(sensor_emc1403);
dac6831e KT	723
	724	MODULE_AUTHOR("Kalhan Trisal <kalhan.trisal@intel.com");
	725	MODULE_DESCRIPTION("emc1403 Thermal Driver");
	726	MODULE_LICENSE("GPL v2");