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 | |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 16 | #include <linux/delay.h> |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 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> |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 25 | #include <linux/device.h> |
Jean Delvare | dcd8f39 | 2012-10-10 15:25:56 +0200 | [diff] [blame] | 26 | #include <linux/jiffies.h> |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 27 | #include <linux/regmap.h> |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 28 | #include <linux/of.h> |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 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 | |
Guenter Roeck | a9f92ccf3 | 2016-06-22 10:01:57 -0700 | [diff] [blame] | 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 | |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 61 | #define CONVERSION_TIME_MS 35 /* in milli-seconds */ |
| 62 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 63 | struct tmp102 { |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 64 | struct regmap *regmap; |
Jean Delvare | 38806bd | 2010-05-27 19:58:59 +0200 | [diff] [blame] | 65 | u16 config_orig; |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 66 | unsigned long ready_time; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 67 | }; |
| 68 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 69 | /* convert left adjusted 13-bit TMP102 register value to milliCelsius */ |
| 70 | static inline int tmp102_reg_to_mC(s16 val) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 71 | { |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 72 | return ((val & ~0x01) * 1000) / 128; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 73 | } |
| 74 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 75 | /* convert milliCelsius to left adjusted 13-bit TMP102 register value */ |
| 76 | static inline u16 tmp102_mC_to_reg(int val) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 77 | { |
| 78 | return (val * 128) / 1000; |
| 79 | } |
| 80 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 81 | static int tmp102_read(struct device *dev, enum hwmon_sensor_types type, |
| 82 | u32 attr, int channel, long *temp) |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 83 | { |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 84 | struct tmp102 *tmp102 = dev_get_drvdata(dev); |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 85 | unsigned int regval; |
| 86 | int err, reg; |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 87 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 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; |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 105 | } |
| 106 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 107 | err = regmap_read(tmp102->regmap, reg, ®val); |
| 108 | if (err < 0) |
| 109 | return err; |
| 110 | *temp = tmp102_reg_to_mC(regval); |
Eduardo Valentin | 6a02752 | 2013-07-16 14:57:51 -0400 | [diff] [blame] | 111 | |
| 112 | return 0; |
| 113 | } |
| 114 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 115 | static int tmp102_write(struct device *dev, enum hwmon_sensor_types type, |
| 116 | u32 attr, int channel, long temp) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 117 | { |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 118 | struct tmp102 *tmp102 = dev_get_drvdata(dev); |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 119 | int reg; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 120 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 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 | } |
Nishanth Menon | 00917b5 | 2015-12-01 10:10:21 -0600 | [diff] [blame] | 131 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 132 | temp = clamp_val(temp, -256000, 255000); |
| 133 | return regmap_write(tmp102->regmap, reg, tmp102_mC_to_reg(temp)); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 134 | } |
| 135 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 136 | static umode_t tmp102_is_visible(const void *data, enum hwmon_sensor_types type, |
| 137 | u32 attr, int channel) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 138 | { |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 139 | if (type != hwmon_temp) |
| 140 | return 0; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 141 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 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 | } |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 151 | } |
| 152 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 153 | static u32 tmp102_chip_config[] = { |
| 154 | HWMON_C_REGISTER_TZ, |
| 155 | 0 |
| 156 | }; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 157 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 158 | static const struct hwmon_channel_info tmp102_chip = { |
| 159 | .type = hwmon_chip, |
| 160 | .config = tmp102_chip_config, |
| 161 | }; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 162 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 163 | static u32 tmp102_temp_config[] = { |
| 164 | HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST, |
| 165 | 0 |
| 166 | }; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 167 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 168 | static const struct hwmon_channel_info tmp102_temp = { |
| 169 | .type = hwmon_temp, |
| 170 | .config = tmp102_temp_config, |
| 171 | }; |
| 172 | |
| 173 | static const struct hwmon_channel_info *tmp102_info[] = { |
| 174 | &tmp102_chip, |
| 175 | &tmp102_temp, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 176 | NULL |
| 177 | }; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 178 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 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, |
Eduardo Valentin | 2251aef | 2014-11-07 21:24:39 -0400 | [diff] [blame] | 188 | }; |
| 189 | |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 190 | static void tmp102_restore_config(void *data) |
| 191 | { |
| 192 | struct tmp102 *tmp102 = data; |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 193 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 194 | regmap_write(tmp102->regmap, TMP102_CONF_REG, tmp102->config_orig); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 195 | } |
| 196 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 197 | static bool tmp102_is_writeable_reg(struct device *dev, unsigned int reg) |
| 198 | { |
| 199 | return reg != TMP102_TEMP_REG; |
| 200 | } |
| 201 | |
| 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, |
| 215 | .use_single_rw = true, |
| 216 | }; |
| 217 | |
Bill Pemberton | 6c931ae | 2012-11-19 13:22:35 -0500 | [diff] [blame] | 218 | static int tmp102_probe(struct i2c_client *client, |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 219 | const struct i2c_device_id *id) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 220 | { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 221 | struct device *dev = &client->dev; |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 222 | struct device *hwmon_dev; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 223 | struct tmp102 *tmp102; |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 224 | unsigned int regval; |
| 225 | int err; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 226 | |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 227 | if (!i2c_check_functionality(client->adapter, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 228 | I2C_FUNC_SMBUS_WORD_DATA)) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 229 | dev_err(dev, |
Guenter Roeck | b55f375 | 2013-01-10 10:01:24 -0800 | [diff] [blame] | 230 | "adapter doesn't support SMBus word transactions\n"); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 231 | return -ENODEV; |
| 232 | } |
| 233 | |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 234 | tmp102 = devm_kzalloc(dev, sizeof(*tmp102), GFP_KERNEL); |
Guenter Roeck | f511a21 | 2012-06-02 11:35:52 -0700 | [diff] [blame] | 235 | if (!tmp102) |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 236 | return -ENOMEM; |
Guenter Roeck | f511a21 | 2012-06-02 11:35:52 -0700 | [diff] [blame] | 237 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 238 | i2c_set_clientdata(client, tmp102); |
| 239 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 240 | tmp102->regmap = devm_regmap_init_i2c(client, &tmp102_regmap_config); |
| 241 | if (IS_ERR(tmp102->regmap)) |
| 242 | return PTR_ERR(tmp102->regmap); |
| 243 | |
| 244 | err = regmap_read(tmp102->regmap, TMP102_CONF_REG, ®val); |
| 245 | if (err < 0) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 246 | dev_err(dev, "error reading config register\n"); |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 247 | return err; |
Jean Delvare | 38806bd | 2010-05-27 19:58:59 +0200 | [diff] [blame] | 248 | } |
Guenter Roeck | a9f92ccf3 | 2016-06-22 10:01:57 -0700 | [diff] [blame] | 249 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 250 | if ((regval & ~TMP102_CONFREG_MASK) != |
Guenter Roeck | a9f92ccf3 | 2016-06-22 10:01:57 -0700 | [diff] [blame] | 251 | (TMP102_CONF_R0 | TMP102_CONF_R1)) { |
| 252 | dev_err(dev, "unexpected config register value\n"); |
| 253 | return -ENODEV; |
| 254 | } |
| 255 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 256 | tmp102->config_orig = regval; |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 257 | |
Guenter Roeck | 1aa4f02 | 2016-07-25 14:57:47 -0700 | [diff] [blame] | 258 | err = devm_add_action_or_reset(dev, tmp102_restore_config, tmp102); |
| 259 | if (err) |
| 260 | return err; |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 261 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 262 | regval &= ~TMP102_CONFIG_CLEAR; |
| 263 | regval |= TMP102_CONFIG_SET; |
Guenter Roeck | a9f92ccf3 | 2016-06-22 10:01:57 -0700 | [diff] [blame] | 264 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 265 | err = regmap_write(tmp102->regmap, TMP102_CONF_REG, regval); |
| 266 | if (err < 0) { |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 267 | dev_err(dev, "error writing config register\n"); |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 268 | return err; |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 269 | } |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 270 | |
Guenter Roeck | d072543 | 2017-10-23 17:36:03 -0700 | [diff] [blame] | 271 | /* |
| 272 | * Mark that we are not ready with data until the first |
| 273 | * conversion is complete |
| 274 | */ |
| 275 | tmp102->ready_time = jiffies + msecs_to_jiffies(CONVERSION_TIME_MS); |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 276 | |
Guenter Roeck | 0208531 | 2016-06-20 10:50:27 -0700 | [diff] [blame] | 277 | hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, |
| 278 | tmp102, |
| 279 | &tmp102_chip_info, |
| 280 | NULL); |
Guenter Roeck | ad9beea | 2014-02-02 10:08:09 -0800 | [diff] [blame] | 281 | if (IS_ERR(hwmon_dev)) { |
| 282 | dev_dbg(dev, "unable to register hwmon device\n"); |
Guenter Roeck | b17ea1c | 2016-06-19 20:09:54 -0700 | [diff] [blame] | 283 | return PTR_ERR(hwmon_dev); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 284 | } |
Guenter Roeck | fbd9af1 | 2014-02-02 14:22:30 -0800 | [diff] [blame] | 285 | dev_info(dev, "initialized\n"); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 286 | |
| 287 | return 0; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 288 | } |
| 289 | |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 290 | #ifdef CONFIG_PM_SLEEP |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 291 | static int tmp102_suspend(struct device *dev) |
| 292 | { |
| 293 | struct i2c_client *client = to_i2c_client(dev); |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 294 | struct tmp102 *tmp102 = i2c_get_clientdata(client); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 295 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 296 | return regmap_update_bits(tmp102->regmap, TMP102_CONF_REG, |
| 297 | TMP102_CONF_SD, TMP102_CONF_SD); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | static int tmp102_resume(struct device *dev) |
| 301 | { |
| 302 | struct i2c_client *client = to_i2c_client(dev); |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 303 | struct tmp102 *tmp102 = i2c_get_clientdata(client); |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 304 | int err; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 305 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 306 | err = regmap_update_bits(tmp102->regmap, TMP102_CONF_REG, |
| 307 | TMP102_CONF_SD, 0); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 308 | |
Guenter Roeck | 3d8f7a8 | 2016-06-19 20:34:57 -0700 | [diff] [blame] | 309 | tmp102->ready_time = jiffies + msecs_to_jiffies(CONVERSION_TIME_MS); |
| 310 | |
Guenter Roeck | 28a340d | 2016-06-20 09:55:46 -0700 | [diff] [blame] | 311 | return err; |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 312 | } |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 313 | #endif /* CONFIG_PM */ |
| 314 | |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 315 | static SIMPLE_DEV_PM_OPS(tmp102_dev_pm_ops, tmp102_suspend, tmp102_resume); |
| 316 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 317 | static const struct i2c_device_id tmp102_id[] = { |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 318 | { "tmp102", 0 }, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 319 | { } |
| 320 | }; |
Jean Delvare | cff37c9 | 2010-05-27 19:58:57 +0200 | [diff] [blame] | 321 | MODULE_DEVICE_TABLE(i2c, tmp102_id); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 322 | |
Javier Martinez Canillas | 15390c6 | 2017-02-24 10:13:10 -0300 | [diff] [blame] | 323 | static const struct of_device_id tmp102_of_match[] = { |
| 324 | { .compatible = "ti,tmp102" }, |
| 325 | { }, |
| 326 | }; |
| 327 | MODULE_DEVICE_TABLE(of, tmp102_of_match); |
| 328 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 329 | static struct i2c_driver tmp102_driver = { |
| 330 | .driver.name = DRIVER_NAME, |
Javier Martinez Canillas | 15390c6 | 2017-02-24 10:13:10 -0300 | [diff] [blame] | 331 | .driver.of_match_table = of_match_ptr(tmp102_of_match), |
Grygorii Strashko | dd378b1 | 2015-02-03 17:01:58 +0200 | [diff] [blame] | 332 | .driver.pm = &tmp102_dev_pm_ops, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 333 | .probe = tmp102_probe, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 334 | .id_table = tmp102_id, |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 335 | }; |
| 336 | |
Axel Lin | f0967ee | 2012-01-20 15:38:18 +0800 | [diff] [blame] | 337 | module_i2c_driver(tmp102_driver); |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 338 | |
Steven King | beb1b6b | 2010-05-27 19:58:56 +0200 | [diff] [blame] | 339 | MODULE_AUTHOR("Steven King <sfking@fdwdc.com>"); |
| 340 | MODULE_DESCRIPTION("Texas Instruments TMP102 temperature sensor driver"); |
| 341 | MODULE_LICENSE("GPL"); |