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. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 20 | #include <linux/module.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/slab.h> |
| 23 | #include <linux/i2c.h> |
| 24 | #include <linux/hwmon.h> |
| 25 | #include <linux/hwmon-sysfs.h> |
| 26 | #include <linux/err.h> |
| 27 | #include <linux/mutex.h> |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 28 | #include <linux/device.h> |
Jean Delvare | dcd8f39 | 2012-10-10 15:25:56 +0200 | [diff] [blame] | 29 | #include <linux/jiffies.h> |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 30 | #include <linux/thermal.h> |
| 31 | #include <linux/of.h> |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 32 | |
| 33 | #define DRIVER_NAME "tmp102" |
| 34 | |
| 35 | #define TMP102_TEMP_REG 0x00 |
| 36 | #define TMP102_CONF_REG 0x01 |
| 37 | /* note: these bit definitions are byte swapped */ |
| 38 | #define TMP102_CONF_SD 0x0100 |
| 39 | #define TMP102_CONF_TM 0x0200 |
| 40 | #define TMP102_CONF_POL 0x0400 |
| 41 | #define TMP102_CONF_F0 0x0800 |
| 42 | #define TMP102_CONF_F1 0x1000 |
| 43 | #define TMP102_CONF_R0 0x2000 |
| 44 | #define TMP102_CONF_R1 0x4000 |
| 45 | #define TMP102_CONF_OS 0x8000 |
| 46 | #define TMP102_CONF_EM 0x0010 |
| 47 | #define TMP102_CONF_AL 0x0020 |
| 48 | #define TMP102_CONF_CR0 0x0040 |
| 49 | #define TMP102_CONF_CR1 0x0080 |
| 50 | #define TMP102_TLOW_REG 0x02 |
| 51 | #define TMP102_THIGH_REG 0x03 |
| 52 | |
| 53 | struct tmp102 { |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 54 | struct i2c_client *client; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 55 | struct mutex lock; |
Jean Delvare | 38806bd | 2010-05-27 19:58:59 +0200 | [diff] [blame] | 56 | u16 config_orig; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 57 | unsigned long last_update; |
| 58 | int temp[3]; |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 59 | bool first_time; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 60 | }; |
| 61 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 62 | /* convert left adjusted 13-bit TMP102 register value to milliCelsius */ |
| 63 | static inline int tmp102_reg_to_mC(s16 val) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 64 | { |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 65 | return ((val & ~0x01) * 1000) / 128; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 66 | } |
| 67 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 68 | /* convert milliCelsius to left adjusted 13-bit TMP102 register value */ |
| 69 | static inline u16 tmp102_mC_to_reg(int val) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 70 | { |
| 71 | return (val * 128) / 1000; |
| 72 | } |
| 73 | |
| 74 | static const u8 tmp102_reg[] = { |
| 75 | TMP102_TEMP_REG, |
| 76 | TMP102_TLOW_REG, |
| 77 | TMP102_THIGH_REG, |
| 78 | }; |
| 79 | |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 80 | static struct tmp102 *tmp102_update_device(struct device *dev) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 81 | { |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 82 | struct tmp102 *tmp102 = dev_get_drvdata(dev); |
| 83 | struct i2c_client *client = tmp102->client; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 84 | |
| 85 | mutex_lock(&tmp102->lock); |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 86 | if (time_after(jiffies, tmp102->last_update + HZ / 3)) { |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 87 | int i; |
| 88 | for (i = 0; i < ARRAY_SIZE(tmp102->temp); ++i) { |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 89 | int status = i2c_smbus_read_word_swapped(client, |
| 90 | tmp102_reg[i]); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 91 | if (status > -1) |
| 92 | tmp102->temp[i] = tmp102_reg_to_mC(status); |
| 93 | } |
| 94 | tmp102->last_update = jiffies; |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 95 | tmp102->first_time = false; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 96 | } |
| 97 | mutex_unlock(&tmp102->lock); |
| 98 | return tmp102; |
| 99 | } |
| 100 | |
Sascha Hauer | 17e8351 | 2015-07-24 08:12:54 +0200 | [diff] [blame] | 101 | static int tmp102_read_temp(void *dev, int *temp) |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 102 | { |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 103 | struct tmp102 *tmp102 = tmp102_update_device(dev); |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 104 | |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 105 | /* Is it too early even to return a conversion? */ |
| 106 | if (tmp102->first_time) { |
| 107 | dev_dbg(dev, "%s: Conversion not ready yet..\n", __func__); |
| 108 | return -EAGAIN; |
| 109 | } |
| 110 | |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 111 | *temp = tmp102->temp[0]; |
| 112 | |
| 113 | return 0; |
| 114 | } |
| 115 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 116 | static ssize_t tmp102_show_temp(struct device *dev, |
| 117 | struct device_attribute *attr, |
| 118 | char *buf) |
| 119 | { |
| 120 | struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 121 | struct tmp102 *tmp102 = tmp102_update_device(dev); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 122 | |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 123 | /* Is it too early even to return a read? */ |
| 124 | if (tmp102->first_time) |
| 125 | return -EAGAIN; |
| 126 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 127 | return sprintf(buf, "%d\n", tmp102->temp[sda->index]); |
| 128 | } |
| 129 | |
| 130 | static ssize_t tmp102_set_temp(struct device *dev, |
| 131 | struct device_attribute *attr, |
| 132 | const char *buf, size_t count) |
| 133 | { |
| 134 | struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 135 | struct tmp102 *tmp102 = dev_get_drvdata(dev); |
| 136 | struct i2c_client *client = tmp102->client; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 137 | long val; |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 138 | int status; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 139 | |
Frans Meulenbroeks | 179c4fd | 2012-01-04 20:58:52 +0100 | [diff] [blame] | 140 | if (kstrtol(buf, 10, &val) < 0) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 141 | return -EINVAL; |
Guenter Roeck | 2a844c1 | 2013-01-09 08:09:34 -0800 | [diff] [blame] | 142 | val = clamp_val(val, -256000, 255000); |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 143 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 144 | mutex_lock(&tmp102->lock); |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 145 | tmp102->temp[sda->index] = val; |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 146 | status = i2c_smbus_write_word_swapped(client, tmp102_reg[sda->index], |
| 147 | tmp102_mC_to_reg(val)); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 148 | mutex_unlock(&tmp102->lock); |
| 149 | return status ? : count; |
| 150 | } |
| 151 | |
| 152 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, tmp102_show_temp, NULL , 0); |
| 153 | |
| 154 | static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, tmp102_show_temp, |
| 155 | tmp102_set_temp, 1); |
| 156 | |
| 157 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, tmp102_show_temp, |
| 158 | tmp102_set_temp, 2); |
| 159 | |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 160 | static struct attribute *tmp102_attrs[] = { |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 161 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
| 162 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, |
| 163 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
| 164 | NULL |
| 165 | }; |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 166 | ATTRIBUTE_GROUPS(tmp102); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 167 | |
| 168 | #define TMP102_CONFIG (TMP102_CONF_TM | TMP102_CONF_EM | TMP102_CONF_CR1) |
| 169 | #define TMP102_CONFIG_RD_ONLY (TMP102_CONF_R0 | TMP102_CONF_R1 | TMP102_CONF_AL) |
| 170 | |
Eduardo Valentin | 2251aef | 2014-11-07 21:24:39 -0400 | [diff] [blame] | 171 | static const struct thermal_zone_of_device_ops tmp102_of_thermal_ops = { |
| 172 | .get_temp = tmp102_read_temp, |
| 173 | }; |
| 174 | |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame^] | 175 | static void tmp102_restore_config(void *data) |
| 176 | { |
| 177 | struct tmp102 *tmp102 = data; |
| 178 | struct i2c_client *client = tmp102->client; |
| 179 | |
| 180 | i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, |
| 181 | tmp102->config_orig); |
| 182 | } |
| 183 | |
Bill Pemberton | 6c931ae | 2012-11-19 13:22:35 -0500 | [diff] [blame] | 184 | static int tmp102_probe(struct i2c_client *client, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 185 | const struct i2c_device_id *id) |
| 186 | { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 187 | struct device *dev = &client->dev; |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 188 | struct device *hwmon_dev; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 189 | struct tmp102 *tmp102; |
| 190 | int status; |
| 191 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 192 | if (!i2c_check_functionality(client->adapter, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 193 | I2C_FUNC_SMBUS_WORD_DATA)) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 194 | dev_err(dev, |
Guenter Roeck | b55f375 | 2013-01-10 10:01:24 -0800 | [diff] [blame] | 195 | "adapter doesn't support SMBus word transactions\n"); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 196 | return -ENODEV; |
| 197 | } |
| 198 | |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 199 | tmp102 = devm_kzalloc(dev, sizeof(*tmp102), GFP_KERNEL); |
Guenter Roeck | f511a21 | 2012-06-02 11:35:52 -0700 | [diff] [blame] | 200 | if (!tmp102) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 201 | return -ENOMEM; |
Guenter Roeck | f511a21 | 2012-06-02 11:35:52 -0700 | [diff] [blame] | 202 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 203 | i2c_set_clientdata(client, tmp102); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 204 | tmp102->client = client; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 205 | |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 206 | status = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG); |
Jean Delvare | 38806bd | 2010-05-27 19:58:59 +0200 | [diff] [blame] | 207 | if (status < 0) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 208 | dev_err(dev, "error reading config register\n"); |
Guenter Roeck | f511a21 | 2012-06-02 11:35:52 -0700 | [diff] [blame] | 209 | return status; |
Jean Delvare | 38806bd | 2010-05-27 19:58:59 +0200 | [diff] [blame] | 210 | } |
| 211 | tmp102->config_orig = status; |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame^] | 212 | |
| 213 | devm_add_action(dev, tmp102_restore_config, tmp102); |
| 214 | |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 215 | status = i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, |
| 216 | TMP102_CONFIG); |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 217 | if (status < 0) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 218 | dev_err(dev, "error writing config register\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame^] | 219 | return status; |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 220 | } |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 221 | status = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 222 | if (status < 0) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 223 | dev_err(dev, "error reading config register\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame^] | 224 | return status; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 225 | } |
| 226 | status &= ~TMP102_CONFIG_RD_ONLY; |
| 227 | if (status != TMP102_CONFIG) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 228 | dev_err(dev, "config settings did not stick\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame^] | 229 | return -ENODEV; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 230 | } |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 231 | tmp102->last_update = jiffies; |
| 232 | /* Mark that we are not ready with data until conversion is complete */ |
| 233 | tmp102->first_time = true; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 234 | mutex_init(&tmp102->lock); |
| 235 | |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame^] | 236 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
| 237 | tmp102, |
| 238 | tmp102_groups); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 239 | if (IS_ERR(hwmon_dev)) { |
| 240 | dev_dbg(dev, "unable to register hwmon device\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame^] | 241 | return PTR_ERR(hwmon_dev); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 242 | } |
Eduardo Valentin | 51b77fd | 2016-03-09 13:02:54 -0800 | [diff] [blame] | 243 | devm_thermal_zone_of_sensor_register(hwmon_dev, 0, hwmon_dev, |
| 244 | &tmp102_of_thermal_ops); |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 245 | |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 246 | dev_info(dev, "initialized\n"); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 247 | |
| 248 | return 0; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 249 | } |
| 250 | |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 251 | #ifdef CONFIG_PM_SLEEP |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 252 | static int tmp102_suspend(struct device *dev) |
| 253 | { |
| 254 | struct i2c_client *client = to_i2c_client(dev); |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 255 | int config; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 256 | |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 257 | config = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG); |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 258 | if (config < 0) |
| 259 | return config; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 260 | |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 261 | config |= TMP102_CONF_SD; |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 262 | return i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, config); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 263 | } |
| 264 | |
| 265 | static int tmp102_resume(struct device *dev) |
| 266 | { |
| 267 | struct i2c_client *client = to_i2c_client(dev); |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 268 | int config; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 269 | |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 270 | config = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG); |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 271 | if (config < 0) |
| 272 | return config; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 273 | |
Jean Delvare | 8d4dee9 | 2010-05-27 19:58:58 +0200 | [diff] [blame] | 274 | config &= ~TMP102_CONF_SD; |
Jean Delvare | 90f4102 | 2011-11-04 12:00:47 +0100 | [diff] [blame] | 275 | return i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, config); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 276 | } |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 277 | #endif /* CONFIG_PM */ |
| 278 | |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 279 | static SIMPLE_DEV_PM_OPS(tmp102_dev_pm_ops, tmp102_suspend, tmp102_resume); |
| 280 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 281 | static const struct i2c_device_id tmp102_id[] = { |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 282 | { "tmp102", 0 }, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 283 | { } |
| 284 | }; |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 285 | MODULE_DEVICE_TABLE(i2c, tmp102_id); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 286 | |
| 287 | static struct i2c_driver tmp102_driver = { |
| 288 | .driver.name = DRIVER_NAME, |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 289 | .driver.pm = &tmp102_dev_pm_ops, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 290 | .probe = tmp102_probe, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 291 | .id_table = tmp102_id, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 292 | }; |
| 293 | |
Axel Lin | f0967ee | 2012-01-20 15:38:18 +0800 | [diff] [blame] | 294 | module_i2c_driver(tmp102_driver); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 295 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 296 | MODULE_AUTHOR("Steven King <sfking@fdwdc.com>"); |
| 297 | MODULE_DESCRIPTION("Texas Instruments TMP102 temperature sensor driver"); |
| 298 | MODULE_LICENSE("GPL"); |