Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 1 | /* Texas Instruments TMP102 SMBus temperature sensor driver |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 2 | * |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 3 | * Copyright (C) 2010 Steven King <sfking@fdwdc.com> |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 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. |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 14 | */ |
| 15 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 16 | #include <linux/module.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/i2c.h> |
| 20 | #include <linux/hwmon.h> |
| 21 | #include <linux/hwmon-sysfs.h> |
| 22 | #include <linux/err.h> |
| 23 | #include <linux/mutex.h> |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 24 | #include <linux/device.h> |
Jean Delvare | dcd8f39 | 2012-10-10 15:25:56 +0200 | [diff] [blame] | 25 | #include <linux/jiffies.h> |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 26 | #include <linux/thermal.h> |
| 27 | #include <linux/of.h> |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 28 | |
| 29 | #define DRIVER_NAME "tmp102" |
| 30 | |
| 31 | #define TMP102_TEMP_REG 0x00 |
| 32 | #define TMP102_CONF_REG 0x01 |
| 33 | /* note: these bit definitions are byte swapped */ |
| 34 | #define TMP102_CONF_SD 0x0100 |
| 35 | #define TMP102_CONF_TM 0x0200 |
| 36 | #define TMP102_CONF_POL 0x0400 |
| 37 | #define TMP102_CONF_F0 0x0800 |
| 38 | #define TMP102_CONF_F1 0x1000 |
| 39 | #define TMP102_CONF_R0 0x2000 |
| 40 | #define TMP102_CONF_R1 0x4000 |
| 41 | #define TMP102_CONF_OS 0x8000 |
| 42 | #define TMP102_CONF_EM 0x0010 |
| 43 | #define TMP102_CONF_AL 0x0020 |
| 44 | #define TMP102_CONF_CR0 0x0040 |
| 45 | #define TMP102_CONF_CR1 0x0080 |
| 46 | #define TMP102_TLOW_REG 0x02 |
| 47 | #define TMP102_THIGH_REG 0x03 |
| 48 | |
| 49 | struct tmp102 { |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 50 | struct i2c_client *client; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 51 | struct mutex lock; |
Jean Delvare | 38806bd | 2010-05-27 19:58:59 +0200 | [diff] [blame] | 52 | u16 config_orig; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 53 | unsigned long last_update; |
| 54 | int temp[3]; |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 55 | bool first_time; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 56 | }; |
| 57 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 58 | /* convert left adjusted 13-bit TMP102 register value to milliCelsius */ |
| 59 | static inline int tmp102_reg_to_mC(s16 val) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 60 | { |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 61 | return ((val & ~0x01) * 1000) / 128; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 62 | } |
| 63 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 64 | /* convert milliCelsius to left adjusted 13-bit TMP102 register value */ |
| 65 | static inline u16 tmp102_mC_to_reg(int val) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 66 | { |
| 67 | return (val * 128) / 1000; |
| 68 | } |
| 69 | |
| 70 | static const u8 tmp102_reg[] = { |
| 71 | TMP102_TEMP_REG, |
| 72 | TMP102_TLOW_REG, |
| 73 | TMP102_THIGH_REG, |
| 74 | }; |
| 75 | |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 76 | static struct tmp102 *tmp102_update_device(struct device *dev) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 77 | { |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 78 | struct tmp102 *tmp102 = dev_get_drvdata(dev); |
| 79 | struct i2c_client *client = tmp102->client; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 80 | |
| 81 | mutex_lock(&tmp102->lock); |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 82 | if (time_after(jiffies, tmp102->last_update + HZ / 3)) { |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 83 | int i; |
| 84 | for (i = 0; i < ARRAY_SIZE(tmp102->temp); ++i) { |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 85 | int status = i2c_smbus_read_word_swapped(client, |
| 86 | tmp102_reg[i]); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 87 | if (status > -1) |
| 88 | tmp102->temp[i] = tmp102_reg_to_mC(status); |
| 89 | } |
| 90 | tmp102->last_update = jiffies; |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 91 | tmp102->first_time = false; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 92 | } |
| 93 | mutex_unlock(&tmp102->lock); |
| 94 | return tmp102; |
| 95 | } |
| 96 | |
Sascha Hauer | 17e8351 | 2015-07-24 08:12:54 +0200 | [diff] [blame] | 97 | static int tmp102_read_temp(void *dev, int *temp) |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 98 | { |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 99 | struct tmp102 *tmp102 = tmp102_update_device(dev); |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 100 | |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 101 | /* Is it too early even to return a conversion? */ |
| 102 | if (tmp102->first_time) { |
| 103 | dev_dbg(dev, "%s: Conversion not ready yet..\n", __func__); |
| 104 | return -EAGAIN; |
| 105 | } |
| 106 | |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 107 | *temp = tmp102->temp[0]; |
| 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 112 | static ssize_t tmp102_show_temp(struct device *dev, |
| 113 | struct device_attribute *attr, |
| 114 | char *buf) |
| 115 | { |
| 116 | struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 117 | struct tmp102 *tmp102 = tmp102_update_device(dev); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 118 | |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 119 | /* Is it too early even to return a read? */ |
| 120 | if (tmp102->first_time) |
| 121 | return -EAGAIN; |
| 122 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 123 | return sprintf(buf, "%d\n", tmp102->temp[sda->index]); |
| 124 | } |
| 125 | |
| 126 | static ssize_t tmp102_set_temp(struct device *dev, |
| 127 | struct device_attribute *attr, |
| 128 | const char *buf, size_t count) |
| 129 | { |
| 130 | struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 131 | struct tmp102 *tmp102 = dev_get_drvdata(dev); |
| 132 | struct i2c_client *client = tmp102->client; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 133 | long val; |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 134 | int status; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 135 | |
Frans Meulenbroeks | 179c4fd | 2012-01-04 20:58:52 +0100 | [diff] [blame] | 136 | if (kstrtol(buf, 10, &val) < 0) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 137 | return -EINVAL; |
Guenter Roeck | 2a844c1 | 2013-01-09 08:09:34 -0800 | [diff] [blame] | 138 | val = clamp_val(val, -256000, 255000); |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 139 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 140 | mutex_lock(&tmp102->lock); |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 141 | tmp102->temp[sda->index] = val; |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 142 | status = i2c_smbus_write_word_swapped(client, tmp102_reg[sda->index], |
| 143 | tmp102_mC_to_reg(val)); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 144 | mutex_unlock(&tmp102->lock); |
| 145 | return status ? : count; |
| 146 | } |
| 147 | |
| 148 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, tmp102_show_temp, NULL , 0); |
| 149 | |
| 150 | static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, tmp102_show_temp, |
| 151 | tmp102_set_temp, 1); |
| 152 | |
| 153 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, tmp102_show_temp, |
| 154 | tmp102_set_temp, 2); |
| 155 | |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 156 | static struct attribute *tmp102_attrs[] = { |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 157 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
| 158 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, |
| 159 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
| 160 | NULL |
| 161 | }; |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 162 | ATTRIBUTE_GROUPS(tmp102); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 163 | |
| 164 | #define TMP102_CONFIG (TMP102_CONF_TM | TMP102_CONF_EM | TMP102_CONF_CR1) |
| 165 | #define TMP102_CONFIG_RD_ONLY (TMP102_CONF_R0 | TMP102_CONF_R1 | TMP102_CONF_AL) |
| 166 | |
Eduardo Valentin | 2251aef | 2014-11-07 21:24:39 -0400 | [diff] [blame] | 167 | static const struct thermal_zone_of_device_ops tmp102_of_thermal_ops = { |
| 168 | .get_temp = tmp102_read_temp, |
| 169 | }; |
| 170 | |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 171 | static void tmp102_restore_config(void *data) |
| 172 | { |
| 173 | struct tmp102 *tmp102 = data; |
| 174 | struct i2c_client *client = tmp102->client; |
| 175 | |
| 176 | i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, |
| 177 | tmp102->config_orig); |
| 178 | } |
| 179 | |
Bill Pemberton | 6c931ae | 2012-11-19 13:22:35 -0500 | [diff] [blame] | 180 | static int tmp102_probe(struct i2c_client *client, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 181 | const struct i2c_device_id *id) |
| 182 | { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 183 | struct device *dev = &client->dev; |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 184 | struct device *hwmon_dev; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 185 | struct tmp102 *tmp102; |
| 186 | int status; |
| 187 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 188 | if (!i2c_check_functionality(client->adapter, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 189 | I2C_FUNC_SMBUS_WORD_DATA)) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 190 | dev_err(dev, |
Guenter Roeck | b55f375 | 2013-01-10 10:01:24 -0800 | [diff] [blame] | 191 | "adapter doesn't support SMBus word transactions\n"); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 192 | return -ENODEV; |
| 193 | } |
| 194 | |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 195 | tmp102 = devm_kzalloc(dev, sizeof(*tmp102), GFP_KERNEL); |
Guenter Roeck | f511a21 | 2012-06-02 11:35:52 -0700 | [diff] [blame] | 196 | if (!tmp102) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 197 | return -ENOMEM; |
Guenter Roeck | f511a21 | 2012-06-02 11:35:52 -0700 | [diff] [blame] | 198 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 199 | i2c_set_clientdata(client, tmp102); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 200 | tmp102->client = client; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 201 | |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 202 | status = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG); |
Jean Delvare | 38806bd | 2010-05-27 19:58:59 +0200 | [diff] [blame] | 203 | if (status < 0) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 204 | dev_err(dev, "error reading config register\n"); |
Guenter Roeck | f511a21 | 2012-06-02 11:35:52 -0700 | [diff] [blame] | 205 | return status; |
Jean Delvare | 38806bd | 2010-05-27 19:58:59 +0200 | [diff] [blame] | 206 | } |
| 207 | tmp102->config_orig = status; |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 208 | |
| 209 | devm_add_action(dev, tmp102_restore_config, tmp102); |
| 210 | |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 211 | status = i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, |
| 212 | TMP102_CONFIG); |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 213 | if (status < 0) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 214 | dev_err(dev, "error writing config register\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 215 | return status; |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 216 | } |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 217 | status = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 218 | if (status < 0) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 219 | dev_err(dev, "error reading config register\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 220 | return status; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 221 | } |
| 222 | status &= ~TMP102_CONFIG_RD_ONLY; |
| 223 | if (status != TMP102_CONFIG) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 224 | dev_err(dev, "config settings did not stick\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 225 | return -ENODEV; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 226 | } |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 227 | tmp102->last_update = jiffies; |
| 228 | /* Mark that we are not ready with data until conversion is complete */ |
| 229 | tmp102->first_time = true; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 230 | mutex_init(&tmp102->lock); |
| 231 | |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 232 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
| 233 | tmp102, |
| 234 | tmp102_groups); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 235 | if (IS_ERR(hwmon_dev)) { |
| 236 | dev_dbg(dev, "unable to register hwmon device\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 237 | return PTR_ERR(hwmon_dev); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 238 | } |
Eduardo Valentin | 51b77fd | 2016-03-09 13:02:54 -0800 | [diff] [blame] | 239 | devm_thermal_zone_of_sensor_register(hwmon_dev, 0, hwmon_dev, |
| 240 | &tmp102_of_thermal_ops); |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 241 | |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 242 | dev_info(dev, "initialized\n"); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 243 | |
| 244 | return 0; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 245 | } |
| 246 | |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 247 | #ifdef CONFIG_PM_SLEEP |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 248 | static int tmp102_suspend(struct device *dev) |
| 249 | { |
| 250 | struct i2c_client *client = to_i2c_client(dev); |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 251 | int config; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 252 | |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 253 | config = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG); |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 254 | if (config < 0) |
| 255 | return config; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 256 | |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 257 | config |= TMP102_CONF_SD; |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 258 | return i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, config); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | static int tmp102_resume(struct device *dev) |
| 262 | { |
| 263 | struct i2c_client *client = to_i2c_client(dev); |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 264 | int config; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 265 | |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 266 | config = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG); |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 267 | if (config < 0) |
| 268 | return config; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 269 | |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 270 | config &= ~TMP102_CONF_SD; |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 271 | return i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, config); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 272 | } |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 273 | #endif /* CONFIG_PM */ |
| 274 | |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 275 | static SIMPLE_DEV_PM_OPS(tmp102_dev_pm_ops, tmp102_suspend, tmp102_resume); |
| 276 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 277 | static const struct i2c_device_id tmp102_id[] = { |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 278 | { "tmp102", 0 }, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 279 | { } |
| 280 | }; |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 281 | MODULE_DEVICE_TABLE(i2c, tmp102_id); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 282 | |
| 283 | static struct i2c_driver tmp102_driver = { |
| 284 | .driver.name = DRIVER_NAME, |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 285 | .driver.pm = &tmp102_dev_pm_ops, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 286 | .probe = tmp102_probe, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 287 | .id_table = tmp102_id, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 288 | }; |
| 289 | |
Axel Lin | f0967ee | 2012-01-20 15:38:18 +0800 | [diff] [blame] | 290 | module_i2c_driver(tmp102_driver); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 291 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 292 | MODULE_AUTHOR("Steven King <sfking@fdwdc.com>"); |
| 293 | MODULE_DESCRIPTION("Texas Instruments TMP102 temperature sensor driver"); |
| 294 | MODULE_LICENSE("GPL"); |