[linux.git] / drivers / hwmon / tmp102.c

/* Texas Instruments TMP102 SMBus temperature sensor driver
 *
 * Copyright (C) 2010 Steven King <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/delay.h>
#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/mutex.h>
#include <linux/device.h>
#include <linux/jiffies.h>
#include <linux/regmap.h>
#include <linux/of.h>

#define	DRIVER_NAME "tmp102"

#define	TMP102_TEMP_REG			0x00
#define	TMP102_CONF_REG			0x01
/* note: these bit definitions are byte swapped */
#define		TMP102_CONF_SD		0x0100
#define		TMP102_CONF_TM		0x0200
#define		TMP102_CONF_POL		0x0400
#define		TMP102_CONF_F0		0x0800
#define		TMP102_CONF_F1		0x1000
#define		TMP102_CONF_R0		0x2000
#define		TMP102_CONF_R1		0x4000
#define		TMP102_CONF_OS		0x8000
#define		TMP102_CONF_EM		0x0010
#define		TMP102_CONF_AL		0x0020
#define		TMP102_CONF_CR0		0x0040
#define		TMP102_CONF_CR1		0x0080
#define	TMP102_TLOW_REG			0x02
#define	TMP102_THIGH_REG		0x03

#define TMP102_CONFREG_MASK	(TMP102_CONF_SD | TMP102_CONF_TM | \
				 TMP102_CONF_POL | TMP102_CONF_F0 | \
				 TMP102_CONF_F1 | TMP102_CONF_OS | \
				 TMP102_CONF_EM | TMP102_CONF_AL | \
				 TMP102_CONF_CR0 | TMP102_CONF_CR1)

#define TMP102_CONFIG_CLEAR	(TMP102_CONF_SD | TMP102_CONF_OS | \
				 TMP102_CONF_CR0)
#define TMP102_CONFIG_SET	(TMP102_CONF_TM | TMP102_CONF_EM | \
				 TMP102_CONF_CR1)

#define CONVERSION_TIME_MS		35	/* in milli-seconds */

struct tmp102 {
	struct regmap *regmap;
	u16 config_orig;
	unsigned long ready_time;
};

/* convert left adjusted 13-bit TMP102 register value to milliCelsius */
static inline int tmp102_reg_to_mC(s16 val)
{
	return ((val & ~0x01) * 1000) / 128;
}

/* convert milliCelsius to left adjusted 13-bit TMP102 register value */
static inline u16 tmp102_mC_to_reg(int val)
{
	return (val * 128) / 1000;
}

static int tmp102_read(struct device *dev, enum hwmon_sensor_types type,
		       u32 attr, int channel, long *temp)
{
	struct tmp102 *tmp102 = dev_get_drvdata(dev);
	unsigned int regval;
	int err, reg;

	switch (attr) {
	case hwmon_temp_input:
		/* Is it too early to return a conversion ? */
		if (time_before(jiffies, tmp102->ready_time)) {
			dev_dbg(dev, "%s: Conversion not ready yet..\n", __func__);
			return -EAGAIN;
		}
		reg = TMP102_TEMP_REG;
		break;
	case hwmon_temp_max_hyst:
		reg = TMP102_TLOW_REG;
		break;
	case hwmon_temp_max:
		reg = TMP102_THIGH_REG;
		break;
	default:
		return -EOPNOTSUPP;
	}

	err = regmap_read(tmp102->regmap, reg, &regval);
	if (err < 0)
		return err;
	*temp = tmp102_reg_to_mC(regval);

	return 0;
}

static int tmp102_write(struct device *dev, enum hwmon_sensor_types type,
			u32 attr, int channel, long temp)
{
	struct tmp102 *tmp102 = dev_get_drvdata(dev);
	int reg;

	switch (attr) {
	case hwmon_temp_max_hyst:
		reg = TMP102_TLOW_REG;
		break;
	case hwmon_temp_max:
		reg = TMP102_THIGH_REG;
		break;
	default:
		return -EOPNOTSUPP;
	}

	temp = clamp_val(temp, -256000, 255000);
	return regmap_write(tmp102->regmap, reg, tmp102_mC_to_reg(temp));
}

static umode_t tmp102_is_visible(const void *data, enum hwmon_sensor_types type,
				 u32 attr, int channel)
{
	if (type != hwmon_temp)
		return 0;

	switch (attr) {
	case hwmon_temp_input:
		return S_IRUGO;
	case hwmon_temp_max_hyst:
	case hwmon_temp_max:
		return S_IRUGO | S_IWUSR;
	default:
		return 0;
	}
}

static u32 tmp102_chip_config[] = {
	HWMON_C_REGISTER_TZ,
	0
};

static const struct hwmon_channel_info tmp102_chip = {
	.type = hwmon_chip,
	.config = tmp102_chip_config,
};

static u32 tmp102_temp_config[] = {
	HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST,
	0
};

static const struct hwmon_channel_info tmp102_temp = {
	.type = hwmon_temp,
	.config = tmp102_temp_config,
};

static const struct hwmon_channel_info *tmp102_info[] = {
	&tmp102_chip,
	&tmp102_temp,
	NULL
};

static const struct hwmon_ops tmp102_hwmon_ops = {
	.is_visible = tmp102_is_visible,
	.read = tmp102_read,
	.write = tmp102_write,
};

static const struct hwmon_chip_info tmp102_chip_info = {
	.ops = &tmp102_hwmon_ops,
	.info = tmp102_info,
};

static void tmp102_restore_config(void *data)
{
	struct tmp102 *tmp102 = data;

	regmap_write(tmp102->regmap, TMP102_CONF_REG, tmp102->config_orig);
}

static bool tmp102_is_writeable_reg(struct device *dev, unsigned int reg)
{
	return reg != TMP102_TEMP_REG;
}

static bool tmp102_is_volatile_reg(struct device *dev, unsigned int reg)
{
	return reg == TMP102_TEMP_REG;
}

static const struct regmap_config tmp102_regmap_config = {
	.reg_bits = 8,
	.val_bits = 16,
	.max_register = TMP102_THIGH_REG,
	.writeable_reg = tmp102_is_writeable_reg,
	.volatile_reg = tmp102_is_volatile_reg,
	.val_format_endian = REGMAP_ENDIAN_BIG,
	.cache_type = REGCACHE_RBTREE,
	.use_single_read = true,
	.use_single_write = true,
};

static int tmp102_probe(struct i2c_client *client,
			const struct i2c_device_id *id)
{
	struct device *dev = &client->dev;
	struct device *hwmon_dev;
	struct tmp102 *tmp102;
	unsigned int regval;
	int err;

	if (!i2c_check_functionality(client->adapter,
				     I2C_FUNC_SMBUS_WORD_DATA)) {
		dev_err(dev,
			"adapter doesn't support SMBus word transactions\n");
		return -ENODEV;
	}

	tmp102 = devm_kzalloc(dev, sizeof(*tmp102), GFP_KERNEL);
	if (!tmp102)
		return -ENOMEM;

	i2c_set_clientdata(client, tmp102);

	tmp102->regmap = devm_regmap_init_i2c(client, &tmp102_regmap_config);
	if (IS_ERR(tmp102->regmap))
		return PTR_ERR(tmp102->regmap);

	err = regmap_read(tmp102->regmap, TMP102_CONF_REG, &regval);
	if (err < 0) {
		dev_err(dev, "error reading config register\n");
		return err;
	}

	if ((regval & ~TMP102_CONFREG_MASK) !=
	    (TMP102_CONF_R0 | TMP102_CONF_R1)) {
		dev_err(dev, "unexpected config register value\n");
		return -ENODEV;
	}

	tmp102->config_orig = regval;

	err = devm_add_action_or_reset(dev, tmp102_restore_config, tmp102);
	if (err)
		return err;

	regval &= ~TMP102_CONFIG_CLEAR;
	regval |= TMP102_CONFIG_SET;

	err = regmap_write(tmp102->regmap, TMP102_CONF_REG, regval);
	if (err < 0) {
		dev_err(dev, "error writing config register\n");
		return err;
	}

	/*
	 * Mark that we are not ready with data until the first
	 * conversion is complete
	 */
	tmp102->ready_time = jiffies + msecs_to_jiffies(CONVERSION_TIME_MS);

	hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
							 tmp102,
							 &tmp102_chip_info,
							 NULL);
	if (IS_ERR(hwmon_dev)) {
		dev_dbg(dev, "unable to register hwmon device\n");
		return PTR_ERR(hwmon_dev);
	}
	dev_info(dev, "initialized\n");

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int tmp102_suspend(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct tmp102 *tmp102 = i2c_get_clientdata(client);

	return regmap_update_bits(tmp102->regmap, TMP102_CONF_REG,
				  TMP102_CONF_SD, TMP102_CONF_SD);
}

static int tmp102_resume(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct tmp102 *tmp102 = i2c_get_clientdata(client);
	int err;

	err = regmap_update_bits(tmp102->regmap, TMP102_CONF_REG,
				 TMP102_CONF_SD, 0);

	tmp102->ready_time = jiffies + msecs_to_jiffies(CONVERSION_TIME_MS);

	return err;
}
#endif /* CONFIG_PM */

static SIMPLE_DEV_PM_OPS(tmp102_dev_pm_ops, tmp102_suspend, tmp102_resume);

static const struct i2c_device_id tmp102_id[] = {
	{ "tmp102", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, tmp102_id);

static const struct of_device_id tmp102_of_match[] = {
	{ .compatible = "ti,tmp102" },
	{ },
};
MODULE_DEVICE_TABLE(of, tmp102_of_match);

static struct i2c_driver tmp102_driver = {
	.driver.name	= DRIVER_NAME,
	.driver.of_match_table = of_match_ptr(tmp102_of_match),
	.driver.pm	= &tmp102_dev_pm_ops,
	.probe		= tmp102_probe,
	.id_table	= tmp102_id,
};

module_i2c_driver(tmp102_driver);

MODULE_AUTHOR("Steven King <[email protected]>");
MODULE_DESCRIPTION("Texas Instruments TMP102 temperature sensor driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
cff37c9e	1	/* Texas Instruments TMP102 SMBus temperature sensor driver
beb1b6bb	2	*
cff37c9e	3	* Copyright (C) 2010 Steven King <[email protected]>
beb1b6bb SK	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
beb1b6bb SK	14	*/
beb1b6bb SK	15
3d8f7a89	16	#include <linux/delay.h>
beb1b6bb SK	17	#include <linux/module.h>
	18	#include <linux/init.h>
	19	#include <linux/slab.h>
	20	#include <linux/i2c.h>
	21	#include <linux/hwmon.h>
	22	#include <linux/hwmon-sysfs.h>
	23	#include <linux/err.h>
	24	#include <linux/mutex.h>
cff37c9e	25	#include <linux/device.h>
dcd8f392	26	#include <linux/jiffies.h>
28a340db	27	#include <linux/regmap.h>
6a027523	28	#include <linux/of.h>
beb1b6bb SK	29
	30	#define DRIVER_NAME "tmp102"
	31
	32	#define TMP102_TEMP_REG 0x00
	33	#define TMP102_CONF_REG 0x01
	34	/* note: these bit definitions are byte swapped */
	35	#define TMP102_CONF_SD 0x0100
	36	#define TMP102_CONF_TM 0x0200
	37	#define TMP102_CONF_POL 0x0400
	38	#define TMP102_CONF_F0 0x0800
	39	#define TMP102_CONF_F1 0x1000
	40	#define TMP102_CONF_R0 0x2000
	41	#define TMP102_CONF_R1 0x4000
	42	#define TMP102_CONF_OS 0x8000
	43	#define TMP102_CONF_EM 0x0010
	44	#define TMP102_CONF_AL 0x0020
	45	#define TMP102_CONF_CR0 0x0040
	46	#define TMP102_CONF_CR1 0x0080
	47	#define TMP102_TLOW_REG 0x02
	48	#define TMP102_THIGH_REG 0x03
	49
a9f92ccf GR	50	#define TMP102_CONFREG_MASK (TMP102_CONF_SD \| TMP102_CONF_TM \| \
	51	TMP102_CONF_POL \| TMP102_CONF_F0 \| \
	52	TMP102_CONF_F1 \| TMP102_CONF_OS \| \
	53	TMP102_CONF_EM \| TMP102_CONF_AL \| \
	54	TMP102_CONF_CR0 \| TMP102_CONF_CR1)
	55
	56	#define TMP102_CONFIG_CLEAR (TMP102_CONF_SD \| TMP102_CONF_OS \| \
	57	TMP102_CONF_CR0)
	58	#define TMP102_CONFIG_SET (TMP102_CONF_TM \| TMP102_CONF_EM \| \
	59	TMP102_CONF_CR1)
	60
3d8f7a89 GR	61	#define CONVERSION_TIME_MS 35 /* in milli-seconds */
3d8f7a89 GR	62
beb1b6bb	63	struct tmp102 {
28a340db	64	struct regmap *regmap;
38806bda	65	u16 config_orig;
3d8f7a89	66	unsigned long ready_time;
beb1b6bb SK	67	};
beb1b6bb SK	68
cff37c9e JD	69	/* convert left adjusted 13-bit TMP102 register value to milliCelsius */
cff37c9e JD	70	static inline int tmp102_reg_to_mC(s16 val)
beb1b6bb	71	{
cff37c9e	72	return ((val & ~0x01) * 1000) / 128;
beb1b6bb SK	73	}
beb1b6bb SK	74
cff37c9e JD	75	/* convert milliCelsius to left adjusted 13-bit TMP102 register value */
cff37c9e JD	76	static inline u16 tmp102_mC_to_reg(int val)
beb1b6bb SK	77	{
	78	return (val * 128) / 1000;
	79	}
	80
0208531d GR	81	static int tmp102_read(struct device *dev, enum hwmon_sensor_types type,
0208531d GR	82	u32 attr, int channel, long *temp)
6a027523	83	{
3d8f7a89	84	struct tmp102 *tmp102 = dev_get_drvdata(dev);
0208531d GR	85	unsigned int regval;
	86	int err, reg;
	87
	88	switch (attr) {
	89	case hwmon_temp_input:
	90	/* Is it too early to return a conversion ? */
	91	if (time_before(jiffies, tmp102->ready_time)) {
	92	dev_dbg(dev, "%s: Conversion not ready yet..\n", __func__);
	93	return -EAGAIN;
	94	}
	95	reg = TMP102_TEMP_REG;
	96	break;
	97	case hwmon_temp_max_hyst:
	98	reg = TMP102_TLOW_REG;
	99	break;
	100	case hwmon_temp_max:
	101	reg = TMP102_THIGH_REG;
	102	break;
	103	default:
	104	return -EOPNOTSUPP;
00917b5c NM	105	}
00917b5c NM	106
0208531d GR	107	err = regmap_read(tmp102->regmap, reg, &regval);
	108	if (err < 0)
	109	return err;
	110	*temp = tmp102_reg_to_mC(regval);
6a027523 EV	111
	112	return 0;
	113	}
	114
0208531d GR	115	static int tmp102_write(struct device *dev, enum hwmon_sensor_types type,
0208531d GR	116	u32 attr, int channel, long temp)
beb1b6bb	117	{
3d8f7a89	118	struct tmp102 *tmp102 = dev_get_drvdata(dev);
0208531d GR	119	int reg;
	120
	121	switch (attr) {
	122	case hwmon_temp_max_hyst:
	123	reg = TMP102_TLOW_REG;
	124	break;
	125	case hwmon_temp_max:
	126	reg = TMP102_THIGH_REG;
	127	break;
	128	default:
	129	return -EOPNOTSUPP;
	130	}
3d8f7a89	131
0208531d GR	132	temp = clamp_val(temp, -256000, 255000);
0208531d GR	133	return regmap_write(tmp102->regmap, reg, tmp102_mC_to_reg(temp));
beb1b6bb SK	134	}
beb1b6bb SK	135
0208531d GR	136	static umode_t tmp102_is_visible(const void *data, enum hwmon_sensor_types type,
0208531d GR	137	u32 attr, int channel)
beb1b6bb	138	{
0208531d GR	139	if (type != hwmon_temp)
	140	return 0;
	141
	142	switch (attr) {
	143	case hwmon_temp_input:
	144	return S_IRUGO;
	145	case hwmon_temp_max_hyst:
	146	case hwmon_temp_max:
	147	return S_IRUGO \| S_IWUSR;
	148	default:
	149	return 0;
	150	}
beb1b6bb SK	151	}
beb1b6bb SK	152
0208531d GR	153	static u32 tmp102_chip_config[] = {
	154	HWMON_C_REGISTER_TZ,
	155	0
	156	};
	157
	158	static const struct hwmon_channel_info tmp102_chip = {
	159	.type = hwmon_chip,
	160	.config = tmp102_chip_config,
	161	};
beb1b6bb	162
0208531d GR	163	static u32 tmp102_temp_config[] = {
	164	HWMON_T_INPUT \| HWMON_T_MAX \| HWMON_T_MAX_HYST,
	165	0
	166	};
beb1b6bb	167
0208531d GR	168	static const struct hwmon_channel_info tmp102_temp = {
	169	.type = hwmon_temp,
	170	.config = tmp102_temp_config,
	171	};
beb1b6bb	172
0208531d GR	173	static const struct hwmon_channel_info *tmp102_info[] = {
	174	&tmp102_chip,
	175	&tmp102_temp,
beb1b6bb SK	176	NULL
beb1b6bb SK	177	};
beb1b6bb	178
0208531d GR	179	static const struct hwmon_ops tmp102_hwmon_ops = {
	180	.is_visible = tmp102_is_visible,
	181	.read = tmp102_read,
	182	.write = tmp102_write,
	183	};
	184
	185	static const struct hwmon_chip_info tmp102_chip_info = {
	186	.ops = &tmp102_hwmon_ops,
	187	.info = tmp102_info,
2251aef6 EV	188	};
2251aef6 EV	189
b17ea1ca GR	190	static void tmp102_restore_config(void *data)
	191	{
	192	struct tmp102 *tmp102 = data;
b17ea1ca	193
28a340db GR	194	regmap_write(tmp102->regmap, TMP102_CONF_REG, tmp102->config_orig);
	195	}
	196
	197	static bool tmp102_is_writeable_reg(struct device *dev, unsigned int reg)
	198	{
	199	return reg != TMP102_TEMP_REG;
b17ea1ca GR	200	}
b17ea1ca GR	201
28a340db GR	202	static bool tmp102_is_volatile_reg(struct device *dev, unsigned int reg)
	203	{
	204	return reg == TMP102_TEMP_REG;
	205	}
	206
	207	static const struct regmap_config tmp102_regmap_config = {
	208	.reg_bits = 8,
	209	.val_bits = 16,
	210	.max_register = TMP102_THIGH_REG,
	211	.writeable_reg = tmp102_is_writeable_reg,
	212	.volatile_reg = tmp102_is_volatile_reg,
	213	.val_format_endian = REGMAP_ENDIAN_BIG,
	214	.cache_type = REGCACHE_RBTREE,
1c96a2f6 DF	215	.use_single_read = true,
1c96a2f6 DF	216	.use_single_write = true,
28a340db GR	217	};
28a340db GR	218
6c931ae1	219	static int tmp102_probe(struct i2c_client *client,
0208531d	220	const struct i2c_device_id *id)
beb1b6bb	221	{
fbd9af16	222	struct device *dev = &client->dev;
ad9beea4	223	struct device *hwmon_dev;
beb1b6bb	224	struct tmp102 *tmp102;
28a340db GR	225	unsigned int regval;
28a340db GR	226	int err;
beb1b6bb	227
cff37c9e	228	if (!i2c_check_functionality(client->adapter,
beb1b6bb	229	I2C_FUNC_SMBUS_WORD_DATA)) {
fbd9af16	230	dev_err(dev,
b55f3757	231	"adapter doesn't support SMBus word transactions\n");
beb1b6bb SK	232	return -ENODEV;
	233	}
	234
fbd9af16	235	tmp102 = devm_kzalloc(dev, sizeof(*tmp102), GFP_KERNEL);
f511a21f	236	if (!tmp102)
beb1b6bb	237	return -ENOMEM;
f511a21f	238
beb1b6bb SK	239	i2c_set_clientdata(client, tmp102);
beb1b6bb SK	240
28a340db GR	241	tmp102->regmap = devm_regmap_init_i2c(client, &tmp102_regmap_config);
	242	if (IS_ERR(tmp102->regmap))
	243	return PTR_ERR(tmp102->regmap);
	244
	245	err = regmap_read(tmp102->regmap, TMP102_CONF_REG, &regval);
	246	if (err < 0) {
fbd9af16	247	dev_err(dev, "error reading config register\n");
28a340db	248	return err;
38806bda	249	}
a9f92ccf	250
28a340db	251	if ((regval & ~TMP102_CONFREG_MASK) !=
a9f92ccf GR	252	(TMP102_CONF_R0 \| TMP102_CONF_R1)) {
	253	dev_err(dev, "unexpected config register value\n");
	254	return -ENODEV;
	255	}
	256
28a340db	257	tmp102->config_orig = regval;
b17ea1ca	258
1aa4f028 GR	259	err = devm_add_action_or_reset(dev, tmp102_restore_config, tmp102);
	260	if (err)
	261	return err;
b17ea1ca	262
28a340db GR	263	regval &= ~TMP102_CONFIG_CLEAR;
28a340db GR	264	regval \|= TMP102_CONFIG_SET;
a9f92ccf	265
28a340db GR	266	err = regmap_write(tmp102->regmap, TMP102_CONF_REG, regval);
28a340db GR	267	if (err < 0) {
fbd9af16	268	dev_err(dev, "error writing config register\n");
28a340db	269	return err;
cff37c9e	270	}
3d8f7a89	271
d0725439 GR	272	/*
	273	* Mark that we are not ready with data until the first
	274	* conversion is complete
	275	*/
	276	tmp102->ready_time = jiffies + msecs_to_jiffies(CONVERSION_TIME_MS);
3d8f7a89	277
0208531d GR	278	hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
	279	tmp102,
	280	&tmp102_chip_info,
	281	NULL);
ad9beea4	282	if (IS_ERR(hwmon_dev)) {
fbd9af16	283	dev_dbg(dev, "unable to register hwmon device\n");
b17ea1ca	284	return PTR_ERR(hwmon_dev);
beb1b6bb	285	}
fbd9af16	286	dev_info(dev, "initialized\n");
beb1b6bb	287
beb1b6bb SK	288	return 0;
	289	}
	290
dd378b1b	291	#ifdef CONFIG_PM_SLEEP
beb1b6bb SK	292	static int tmp102_suspend(struct device *dev)
	293	{
	294	struct i2c_client *client = to_i2c_client(dev);
28a340db	295	struct tmp102 *tmp102 = i2c_get_clientdata(client);
beb1b6bb	296
28a340db GR	297	return regmap_update_bits(tmp102->regmap, TMP102_CONF_REG,
28a340db GR	298	TMP102_CONF_SD, TMP102_CONF_SD);
beb1b6bb SK	299	}
	300
	301	static int tmp102_resume(struct device *dev)
	302	{
	303	struct i2c_client *client = to_i2c_client(dev);
3d8f7a89	304	struct tmp102 *tmp102 = i2c_get_clientdata(client);
28a340db	305	int err;
beb1b6bb	306
28a340db GR	307	err = regmap_update_bits(tmp102->regmap, TMP102_CONF_REG,
28a340db GR	308	TMP102_CONF_SD, 0);
beb1b6bb	309
3d8f7a89 GR	310	tmp102->ready_time = jiffies + msecs_to_jiffies(CONVERSION_TIME_MS);
3d8f7a89 GR	311
28a340db	312	return err;
beb1b6bb	313	}
beb1b6bb SK	314	#endif /* CONFIG_PM */
beb1b6bb SK	315
dd378b1b GS	316	static SIMPLE_DEV_PM_OPS(tmp102_dev_pm_ops, tmp102_suspend, tmp102_resume);
dd378b1b GS	317
beb1b6bb	318	static const struct i2c_device_id tmp102_id[] = {
cff37c9e	319	{ "tmp102", 0 },
beb1b6bb SK	320	{ }
beb1b6bb SK	321	};
cff37c9e	322	MODULE_DEVICE_TABLE(i2c, tmp102_id);
beb1b6bb	323
15390c61 JMC	324	static const struct of_device_id tmp102_of_match[] = {
	325	{ .compatible = "ti,tmp102" },
	326	{ },
	327	};
	328	MODULE_DEVICE_TABLE(of, tmp102_of_match);
	329
beb1b6bb SK	330	static struct i2c_driver tmp102_driver = {
beb1b6bb SK	331	.driver.name = DRIVER_NAME,
15390c61	332	.driver.of_match_table = of_match_ptr(tmp102_of_match),
dd378b1b	333	.driver.pm = &tmp102_dev_pm_ops,
beb1b6bb	334	.probe = tmp102_probe,
beb1b6bb	335	.id_table = tmp102_id,
beb1b6bb SK	336	};
beb1b6bb SK	337
f0967eea	338	module_i2c_driver(tmp102_driver);
beb1b6bb	339
beb1b6bb SK	340	MODULE_AUTHOR("Steven King <[email protected]>");
	341	MODULE_DESCRIPTION("Texas Instruments TMP102 temperature sensor driver");
	342	MODULE_LICENSE("GPL");