Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 779 insertions, 0 deletions

diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
new file mode 100644
index 000000000..f358ba679
--- /dev/null
+++ b/drivers/hwmon/tmp401.c
@@ -0,0 +1,779 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* tmp401.c
+ *
+ * Copyright (C) 2007,2008 Hans de Goede <hdegoede@redhat.com>
+ * Preliminary tmp411 support by:
+ * Gabriel Konat, Sander Leget, Wouter Willems
+ * Copyright (C) 2009 Andre Prendel <andre.prendel@gmx.de>
+ *
+ * Cleanup and support for TMP431 and TMP432 by Guenter Roeck
+ * Copyright (c) 2013 Guenter Roeck <linux@roeck-us.net>
+ */
+
+/*
+ * Driver for the Texas Instruments TMP401 SMBUS temperature sensor IC.
+ *
+ * Note this IC is in some aspect similar to the LM90, but it has quite a
+ * few differences too, for example the local temp has a higher resolution
+ * and thus has 16 bits registers for its value and limit instead of 8 bits.
+ */
+
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4c, 0x4d,
+	0x4e, 0x4f, I2C_CLIENT_END };
+
+enum chips { tmp401, tmp411, tmp431, tmp432, tmp435 };
+
+/*
+ * The TMP401 registers, note some registers have different addresses for
+ * reading and writing
+ */
+#define TMP401_STATUS				0x02
+#define TMP401_CONFIG				0x03
+#define TMP401_CONVERSION_RATE			0x04
+#define TMP4XX_N_FACTOR_REG			0x18
+#define TMP43X_BETA_RANGE			0x25
+#define TMP401_TEMP_CRIT_HYST			0x21
+#define TMP401_MANUFACTURER_ID_REG		0xFE
+#define TMP401_DEVICE_ID_REG			0xFF
+
+static const u8 TMP401_TEMP_MSB[7][3] = {
+	{ 0x00, 0x01, 0x23 },	/* temp */
+	{ 0x06, 0x08, 0x16 },	/* low limit */
+	{ 0x05, 0x07, 0x15 },	/* high limit */
+	{ 0x20, 0x19, 0x1a },	/* therm (crit) limit */
+	{ 0x30, 0x34, 0x00 },	/* lowest */
+	{ 0x32, 0xf6, 0x00 },	/* highest */
+};
+
+/* [0] = fault, [1] = low, [2] = high, [3] = therm/crit */
+static const u8 TMP432_STATUS_REG[] = {
+	0x1b, 0x36, 0x35, 0x37 };
+
+/* Flags */
+#define TMP401_CONFIG_RANGE			BIT(2)
+#define TMP401_CONFIG_SHUTDOWN			BIT(6)
+#define TMP401_STATUS_LOCAL_CRIT		BIT(0)
+#define TMP401_STATUS_REMOTE_CRIT		BIT(1)
+#define TMP401_STATUS_REMOTE_OPEN		BIT(2)
+#define TMP401_STATUS_REMOTE_LOW		BIT(3)
+#define TMP401_STATUS_REMOTE_HIGH		BIT(4)
+#define TMP401_STATUS_LOCAL_LOW			BIT(5)
+#define TMP401_STATUS_LOCAL_HIGH		BIT(6)
+
+/* On TMP432, each status has its own register */
+#define TMP432_STATUS_LOCAL			BIT(0)
+#define TMP432_STATUS_REMOTE1			BIT(1)
+#define TMP432_STATUS_REMOTE2			BIT(2)
+
+/* Manufacturer / Device ID's */
+#define TMP401_MANUFACTURER_ID			0x55
+#define TMP401_DEVICE_ID			0x11
+#define TMP411A_DEVICE_ID			0x12
+#define TMP411B_DEVICE_ID			0x13
+#define TMP411C_DEVICE_ID			0x10
+#define TMP431_DEVICE_ID			0x31
+#define TMP432_DEVICE_ID			0x32
+#define TMP435_DEVICE_ID			0x35
+
+/*
+ * Driver data (common to all clients)
+ */
+
+static const struct i2c_device_id tmp401_id[] = {
+	{ "tmp401", tmp401 },
+	{ "tmp411", tmp411 },
+	{ "tmp431", tmp431 },
+	{ "tmp432", tmp432 },
+	{ "tmp435", tmp435 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, tmp401_id);
+
+/*
+ * Client data (each client gets its own)
+ */
+
+struct tmp401_data {
+	struct i2c_client *client;
+	struct regmap *regmap;
+	struct mutex update_lock;
+	enum chips kind;
+
+	bool extended_range;
+
+	/* hwmon API configuration data */
+	u32 chip_channel_config[4];
+	struct hwmon_channel_info chip_info;
+	u32 temp_channel_config[4];
+	struct hwmon_channel_info temp_info;
+	const struct hwmon_channel_info *info[3];
+	struct hwmon_chip_info chip;
+};
+
+/* regmap */
+
+static bool tmp401_regmap_is_volatile(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0:			/* local temp msb */
+	case 1:			/* remote temp msb */
+	case 2:			/* status */
+	case 0x10:		/* remote temp lsb */
+	case 0x15:		/* local temp lsb */
+	case 0x1b:		/* status (tmp432) */
+	case 0x23 ... 0x24:	/* remote temp 2 msb / lsb */
+	case 0x30 ... 0x37:	/* lowest/highest temp; status (tmp432) */
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int tmp401_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+	struct tmp401_data *data = context;
+	struct i2c_client *client = data->client;
+	int regval;
+
+	switch (reg) {
+	case 0:			/* local temp msb */
+	case 1:			/* remote temp msb */
+	case 5:			/* local temp high limit msb */
+	case 6:			/* local temp low limit msb */
+	case 7:			/* remote temp ligh limit msb */
+	case 8:			/* remote temp low limit msb */
+	case 0x15:		/* remote temp 2 high limit msb */
+	case 0x16:		/* remote temp 2 low limit msb */
+	case 0x23:		/* remote temp 2 msb */
+	case 0x30:		/* local temp minimum, tmp411 */
+	case 0x32:		/* local temp maximum, tmp411 */
+	case 0x34:		/* remote temp minimum, tmp411 */
+	case 0xf6:		/* remote temp maximum, tmp411 (really 0x36) */
+		/* work around register overlap between TMP411 and TMP432 */
+		if (reg == 0xf6)
+			reg = 0x36;
+		regval = i2c_smbus_read_word_swapped(client, reg);
+		if (regval < 0)
+			return regval;
+		*val = regval;
+		break;
+	case 0x19:		/* critical limits, 8-bit registers */
+	case 0x1a:
+	case 0x20:
+		regval = i2c_smbus_read_byte_data(client, reg);
+		if (regval < 0)
+			return regval;
+		*val = regval << 8;
+		break;
+	case 0x1b:
+	case 0x35 ... 0x37:
+		if (data->kind == tmp432) {
+			regval = i2c_smbus_read_byte_data(client, reg);
+			if (regval < 0)
+				return regval;
+			*val = regval;
+			break;
+		}
+		/* simulate TMP432 status registers */
+		regval = i2c_smbus_read_byte_data(client, TMP401_STATUS);
+		if (regval < 0)
+			return regval;
+		*val = 0;
+		switch (reg) {
+		case 0x1b:	/* open / fault */
+			if (regval & TMP401_STATUS_REMOTE_OPEN)
+				*val |= BIT(1);
+			break;
+		case 0x35:	/* high limit */
+			if (regval & TMP401_STATUS_LOCAL_HIGH)
+				*val |= BIT(0);
+			if (regval & TMP401_STATUS_REMOTE_HIGH)
+				*val |= BIT(1);
+			break;
+		case 0x36:	/* low limit */
+			if (regval & TMP401_STATUS_LOCAL_LOW)
+				*val |= BIT(0);
+			if (regval & TMP401_STATUS_REMOTE_LOW)
+				*val |= BIT(1);
+			break;
+		case 0x37:	/* therm / crit limit */
+			if (regval & TMP401_STATUS_LOCAL_CRIT)
+				*val |= BIT(0);
+			if (regval & TMP401_STATUS_REMOTE_CRIT)
+				*val |= BIT(1);
+			break;
+		}
+		break;
+	default:
+		regval = i2c_smbus_read_byte_data(client, reg);
+		if (regval < 0)
+			return regval;
+		*val = regval;
+		break;
+	}
+	return 0;
+}
+
+static int tmp401_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+	struct tmp401_data *data = context;
+	struct i2c_client *client = data->client;
+
+	switch (reg) {
+	case 0x05:		/* local temp high limit msb */
+	case 0x06:		/* local temp low limit msb */
+	case 0x07:		/* remote temp ligh limit msb */
+	case 0x08:		/* remote temp low limit msb */
+		reg += 6;	/* adjust for register write address */
+		fallthrough;
+	case 0x15:		/* remote temp 2 high limit msb */
+	case 0x16:		/* remote temp 2 low limit msb */
+		return i2c_smbus_write_word_swapped(client, reg, val);
+	case 0x19:		/* critical limits, 8-bit registers */
+	case 0x1a:
+	case 0x20:
+		return i2c_smbus_write_byte_data(client, reg, val >> 8);
+	case TMP401_CONVERSION_RATE:
+	case TMP401_CONFIG:
+		reg += 6;	/* adjust for register write address */
+		fallthrough;
+	default:
+		return i2c_smbus_write_byte_data(client, reg, val);
+	}
+}
+
+static const struct regmap_config tmp401_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.cache_type = REGCACHE_RBTREE,
+	.volatile_reg = tmp401_regmap_is_volatile,
+	.reg_read = tmp401_reg_read,
+	.reg_write = tmp401_reg_write,
+};
+
+/* temperature conversion */
+
+static int tmp401_register_to_temp(u16 reg, bool extended)
+{
+	int temp = reg;
+
+	if (extended)
+		temp -= 64 * 256;
+
+	return DIV_ROUND_CLOSEST(temp * 125, 32);
+}
+
+static u16 tmp401_temp_to_register(long temp, bool extended, int zbits)
+{
+	if (extended) {
+		temp = clamp_val(temp, -64000, 191000);
+		temp += 64000;
+	} else {
+		temp = clamp_val(temp, 0, 127000);
+	}
+
+	return DIV_ROUND_CLOSEST(temp * (1 << (8 - zbits)), 1000) << zbits;
+}
+
+/* hwmon API functions */
+
+static const u8 tmp401_temp_reg_index[] = {
+	[hwmon_temp_input] = 0,
+	[hwmon_temp_min] = 1,
+	[hwmon_temp_max] = 2,
+	[hwmon_temp_crit] = 3,
+	[hwmon_temp_lowest] = 4,
+	[hwmon_temp_highest] = 5,
+};
+
+static const u8 tmp401_status_reg_index[] = {
+	[hwmon_temp_fault] = 0,
+	[hwmon_temp_min_alarm] = 1,
+	[hwmon_temp_max_alarm] = 2,
+	[hwmon_temp_crit_alarm] = 3,
+};
+
+static int tmp401_temp_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct tmp401_data *data = dev_get_drvdata(dev);
+	struct regmap *regmap = data->regmap;
+	unsigned int regval;
+	int reg, ret;
+
+	switch (attr) {
+	case hwmon_temp_input:
+	case hwmon_temp_min:
+	case hwmon_temp_max:
+	case hwmon_temp_crit:
+	case hwmon_temp_lowest:
+	case hwmon_temp_highest:
+		reg = TMP401_TEMP_MSB[tmp401_temp_reg_index[attr]][channel];
+		ret = regmap_read(regmap, reg, &regval);
+		if (ret < 0)
+			return ret;
+		*val = tmp401_register_to_temp(regval, data->extended_range);
+		break;
+	case hwmon_temp_crit_hyst:
+		mutex_lock(&data->update_lock);
+		reg = TMP401_TEMP_MSB[3][channel];
+		ret = regmap_read(regmap, reg, &regval);
+		if (ret < 0)
+			goto unlock;
+		*val = tmp401_register_to_temp(regval, data->extended_range);
+		ret = regmap_read(regmap, TMP401_TEMP_CRIT_HYST, &regval);
+		if (ret < 0)
+			goto unlock;
+		*val -= regval * 1000;
+unlock:
+		mutex_unlock(&data->update_lock);
+		if (ret < 0)
+			return ret;
+		break;
+	case hwmon_temp_fault:
+	case hwmon_temp_min_alarm:
+	case hwmon_temp_max_alarm:
+	case hwmon_temp_crit_alarm:
+		reg = TMP432_STATUS_REG[tmp401_status_reg_index[attr]];
+		ret = regmap_read(regmap, reg, &regval);
+		if (ret < 0)
+			return ret;
+		*val = !!(regval & BIT(channel));
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+static int tmp401_temp_write(struct device *dev, u32 attr, int channel,
+			     long val)
+{
+	struct tmp401_data *data = dev_get_drvdata(dev);
+	struct regmap *regmap = data->regmap;
+	unsigned int regval;
+	int reg, ret, temp;
+
+	mutex_lock(&data->update_lock);
+	switch (attr) {
+	case hwmon_temp_min:
+	case hwmon_temp_max:
+	case hwmon_temp_crit:
+		reg = TMP401_TEMP_MSB[tmp401_temp_reg_index[attr]][channel];
+		regval = tmp401_temp_to_register(val, data->extended_range,
+						 attr == hwmon_temp_crit ? 8 : 4);
+		ret = regmap_write(regmap, reg, regval);
+		break;
+	case hwmon_temp_crit_hyst:
+		if (data->extended_range)
+			val = clamp_val(val, -64000, 191000);
+		else
+			val = clamp_val(val, 0, 127000);
+
+		reg = TMP401_TEMP_MSB[3][channel];
+		ret = regmap_read(regmap, reg, &regval);
+		if (ret < 0)
+			break;
+		temp = tmp401_register_to_temp(regval, data->extended_range);
+		val = clamp_val(val, temp - 255000, temp);
+		regval = ((temp - val) + 500) / 1000;
+		ret = regmap_write(regmap, TMP401_TEMP_CRIT_HYST, regval);
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+		break;
+	}
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+static int tmp401_chip_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct tmp401_data *data = dev_get_drvdata(dev);
+	u32 regval;
+	int ret;
+
+	switch (attr) {
+	case hwmon_chip_update_interval:
+		ret = regmap_read(data->regmap, TMP401_CONVERSION_RATE, &regval);
+		if (ret < 0)
+			return ret;
+		*val = (1 << (7 - regval)) * 125;
+		break;
+	case hwmon_chip_temp_reset_history:
+		*val = 0;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int tmp401_set_convrate(struct regmap *regmap, long val)
+{
+	int rate;
+
+	/*
+	 * For valid rates, interval can be calculated as
+	 *	interval = (1 << (7 - rate)) * 125;
+	 * Rounded rate is therefore
+	 *	rate = 7 - __fls(interval * 4 / (125 * 3));
+	 * Use clamp_val() to avoid overflows, and to ensure valid input
+	 * for __fls.
+	 */
+	val = clamp_val(val, 125, 16000);
+	rate = 7 - __fls(val * 4 / (125 * 3));
+	return regmap_write(regmap, TMP401_CONVERSION_RATE, rate);
+}
+
+static int tmp401_chip_write(struct device *dev, u32 attr, int channel, long val)
+{
+	struct tmp401_data *data = dev_get_drvdata(dev);
+	struct regmap *regmap = data->regmap;
+	int err;
+
+	mutex_lock(&data->update_lock);
+	switch (attr) {
+	case hwmon_chip_update_interval:
+		err = tmp401_set_convrate(regmap, val);
+		break;
+	case hwmon_chip_temp_reset_history:
+		if (val != 1) {
+			err = -EINVAL;
+			break;
+		}
+		/*
+		 * Reset history by writing any value to any of the
+		 * minimum/maximum registers (0x30-0x37).
+		 */
+		err = regmap_write(regmap, 0x30, 0);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+	mutex_unlock(&data->update_lock);
+
+	return err;
+}
+
+static int tmp401_read(struct device *dev, enum hwmon_sensor_types type,
+		       u32 attr, int channel, long *val)
+{
+	switch (type) {
+	case hwmon_chip:
+		return tmp401_chip_read(dev, attr, channel, val);
+	case hwmon_temp:
+		return tmp401_temp_read(dev, attr, channel, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int tmp401_write(struct device *dev, enum hwmon_sensor_types type,
+			u32 attr, int channel, long val)
+{
+	switch (type) {
+	case hwmon_chip:
+		return tmp401_chip_write(dev, attr, channel, val);
+	case hwmon_temp:
+		return tmp401_temp_write(dev, attr, channel, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static umode_t tmp401_is_visible(const void *data, enum hwmon_sensor_types type,
+				 u32 attr, int channel)
+{
+	switch (type) {
+	case hwmon_chip:
+		switch (attr) {
+		case hwmon_chip_update_interval:
+		case hwmon_chip_temp_reset_history:
+			return 0644;
+		default:
+			break;
+		}
+		break;
+	case hwmon_temp:
+		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_lowest:
+		case hwmon_temp_highest:
+			return 0444;
+		case hwmon_temp_min:
+		case hwmon_temp_max:
+		case hwmon_temp_crit:
+		case hwmon_temp_crit_hyst:
+			return 0644;
+		default:
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static const struct hwmon_ops tmp401_ops = {
+	.is_visible = tmp401_is_visible,
+	.read = tmp401_read,
+	.write = tmp401_write,
+};
+
+/* chip initialization, detect, probe */
+
+static int tmp401_init_client(struct tmp401_data *data)
+{
+	struct regmap *regmap = data->regmap;
+	u32 config, config_orig;
+	int ret;
+	u32 val = 0;
+	s32 nfactor = 0;
+
+	/* Set conversion rate to 2 Hz */
+	ret = regmap_write(regmap, TMP401_CONVERSION_RATE, 5);
+	if (ret < 0)
+		return ret;
+
+	/* Start conversions (disable shutdown if necessary) */
+	ret = regmap_read(regmap, TMP401_CONFIG, &config);
+	if (ret < 0)
+		return ret;
+
+	config_orig = config;
+	config &= ~TMP401_CONFIG_SHUTDOWN;
+
+	if (of_property_read_bool(data->client->dev.of_node, "ti,extended-range-enable")) {
+		/* Enable measurement over extended temperature range */
+		config |= TMP401_CONFIG_RANGE;
+	}
+
+	data->extended_range = !!(config & TMP401_CONFIG_RANGE);
+
+	if (config != config_orig) {
+		ret = regmap_write(regmap, TMP401_CONFIG, config);
+		if (ret < 0)
+			return ret;
+	}
+
+	ret = of_property_read_u32(data->client->dev.of_node, "ti,n-factor", &nfactor);
+	if (!ret) {
+		if (data->kind == tmp401) {
+			dev_err(&data->client->dev, "ti,tmp401 does not support n-factor correction\n");
+			return -EINVAL;
+		}
+		if (nfactor < -128 || nfactor > 127) {
+			dev_err(&data->client->dev, "n-factor is invalid (%d)\n", nfactor);
+			return -EINVAL;
+		}
+		ret = regmap_write(regmap, TMP4XX_N_FACTOR_REG, (unsigned int)nfactor);
+		if (ret < 0)
+			return ret;
+	}
+
+	ret = of_property_read_u32(data->client->dev.of_node, "ti,beta-compensation", &val);
+	if (!ret) {
+		if (data->kind == tmp401 || data->kind == tmp411) {
+			dev_err(&data->client->dev, "ti,tmp401 or ti,tmp411 does not support beta compensation\n");
+			return -EINVAL;
+		}
+		if (val > 15) {
+			dev_err(&data->client->dev, "beta-compensation is invalid (%u)\n", val);
+			return -EINVAL;
+		}
+		ret = regmap_write(regmap, TMP43X_BETA_RANGE, val);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int tmp401_detect(struct i2c_client *client,
+			 struct i2c_board_info *info)
+{
+	enum chips kind;
+	struct i2c_adapter *adapter = client->adapter;
+	u8 reg;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return -ENODEV;
+
+	/* Detect and identify the chip */
+	reg = i2c_smbus_read_byte_data(client, TMP401_MANUFACTURER_ID_REG);
+	if (reg != TMP401_MANUFACTURER_ID)
+		return -ENODEV;
+
+	reg = i2c_smbus_read_byte_data(client, TMP401_DEVICE_ID_REG);
+
+	switch (reg) {
+	case TMP401_DEVICE_ID:
+		if (client->addr != 0x4c)
+			return -ENODEV;
+		kind = tmp401;
+		break;
+	case TMP411A_DEVICE_ID:
+		if (client->addr != 0x4c)
+			return -ENODEV;
+		kind = tmp411;
+		break;
+	case TMP411B_DEVICE_ID:
+		if (client->addr != 0x4d)
+			return -ENODEV;
+		kind = tmp411;
+		break;
+	case TMP411C_DEVICE_ID:
+		if (client->addr != 0x4e)
+			return -ENODEV;
+		kind = tmp411;
+		break;
+	case TMP431_DEVICE_ID:
+		if (client->addr != 0x4c && client->addr != 0x4d)
+			return -ENODEV;
+		kind = tmp431;
+		break;
+	case TMP432_DEVICE_ID:
+		if (client->addr != 0x4c && client->addr != 0x4d)
+			return -ENODEV;
+		kind = tmp432;
+		break;
+	case TMP435_DEVICE_ID:
+		kind = tmp435;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG);
+	if (reg & 0x1b)
+		return -ENODEV;
+
+	reg = i2c_smbus_read_byte_data(client, TMP401_CONVERSION_RATE);
+	/* Datasheet says: 0x1-0x6 */
+	if (reg > 15)
+		return -ENODEV;
+
+	strscpy(info->type, tmp401_id[kind].name, I2C_NAME_SIZE);
+
+	return 0;
+}
+
+static int tmp401_probe(struct i2c_client *client)
+{
+	static const char * const names[] = {
+		"TMP401", "TMP411", "TMP431", "TMP432", "TMP435"
+	};
+	struct device *dev = &client->dev;
+	struct hwmon_channel_info *info;
+	struct device *hwmon_dev;
+	struct tmp401_data *data;
+	int status;
+
+	data = devm_kzalloc(dev, sizeof(struct tmp401_data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->client = client;
+	mutex_init(&data->update_lock);
+	data->kind = i2c_match_id(tmp401_id, client)->driver_data;
+
+	data->regmap = devm_regmap_init(dev, NULL, data, &tmp401_regmap_config);
+	if (IS_ERR(data->regmap))
+		return PTR_ERR(data->regmap);
+
+	/* initialize configuration data */
+	data->chip.ops = &tmp401_ops;
+	data->chip.info = data->info;
+
+	data->info[0] = &data->chip_info;
+	data->info[1] = &data->temp_info;
+
+	info = &data->chip_info;
+	info->type = hwmon_chip;
+	info->config = data->chip_channel_config;
+
+	data->chip_channel_config[0] = HWMON_C_UPDATE_INTERVAL;
+
+	info = &data->temp_info;
+	info->type = hwmon_temp;
+	info->config = data->temp_channel_config;
+
+	data->temp_channel_config[0] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
+		HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
+		HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM;
+	data->temp_channel_config[1] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
+		HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
+		HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT;
+
+	if (data->kind == tmp411) {
+		data->temp_channel_config[0] |= HWMON_T_HIGHEST | HWMON_T_LOWEST;
+		data->temp_channel_config[1] |= HWMON_T_HIGHEST | HWMON_T_LOWEST;
+		data->chip_channel_config[0] |= HWMON_C_TEMP_RESET_HISTORY;
+	}
+
+	if (data->kind == tmp432) {
+		data->temp_channel_config[2] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
+			HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
+			HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT;
+	}
+
+	/* Initialize the TMP401 chip */
+	status = tmp401_init_client(data);
+	if (status < 0)
+		return status;
+
+	hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data,
+							 &data->chip, NULL);
+	if (IS_ERR(hwmon_dev))
+		return PTR_ERR(hwmon_dev);
+
+	dev_info(dev, "Detected TI %s chip\n", names[data->kind]);
+
+	return 0;
+}
+
+static const struct of_device_id __maybe_unused tmp4xx_of_match[] = {
+	{ .compatible = "ti,tmp401", },
+	{ .compatible = "ti,tmp411", },
+	{ .compatible = "ti,tmp431", },
+	{ .compatible = "ti,tmp432", },
+	{ .compatible = "ti,tmp435", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, tmp4xx_of_match);
+
+static struct i2c_driver tmp401_driver = {
+	.class		= I2C_CLASS_HWMON,
+	.driver = {
+		.name	= "tmp401",
+		.of_match_table = of_match_ptr(tmp4xx_of_match),
+	},
+	.probe_new	= tmp401_probe,
+	.id_table	= tmp401_id,
+	.detect		= tmp401_detect,
+	.address_list	= normal_i2c,
+};
+
+module_i2c_driver(tmp401_driver);
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_DESCRIPTION("Texas Instruments TMP401 temperature sensor driver");
+MODULE_LICENSE("GPL");