Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 1 | /* |
| 2 | * ADT7410 digital temperature sensor driver supporting ADT7410 |
| 3 | * |
| 4 | * Copyright 2010 Analog Devices Inc. |
| 5 | * |
| 6 | * Licensed under the GPL-2 or later. |
| 7 | */ |
| 8 | |
| 9 | #include <linux/interrupt.h> |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 10 | #include <linux/device.h> |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/slab.h> |
| 13 | #include <linux/sysfs.h> |
| 14 | #include <linux/list.h> |
| 15 | #include <linux/i2c.h> |
Paul Gortmaker | 99c9785 | 2011-07-03 15:49:50 -0400 | [diff] [blame] | 16 | #include <linux/module.h> |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 17 | |
| 18 | #include "../iio.h" |
| 19 | #include "../sysfs.h" |
Jonathan Cameron | af5046a | 2011-10-26 17:41:32 +0100 | [diff] [blame^] | 20 | #include "../events.h" |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 21 | |
| 22 | /* |
| 23 | * ADT7410 registers definition |
| 24 | */ |
| 25 | |
| 26 | #define ADT7410_TEMPERATURE 0 |
| 27 | #define ADT7410_STATUS 2 |
| 28 | #define ADT7410_CONFIG 3 |
| 29 | #define ADT7410_T_ALARM_HIGH 4 |
| 30 | #define ADT7410_T_ALARM_LOW 6 |
| 31 | #define ADT7410_T_CRIT 8 |
| 32 | #define ADT7410_T_HYST 0xA |
| 33 | #define ADT7410_ID 0xB |
| 34 | #define ADT7410_RESET 0x2F |
| 35 | |
| 36 | /* |
| 37 | * ADT7410 status |
| 38 | */ |
| 39 | #define ADT7410_STAT_T_LOW 0x10 |
| 40 | #define ADT7410_STAT_T_HIGH 0x20 |
| 41 | #define ADT7410_STAT_T_CRIT 0x40 |
| 42 | #define ADT7410_STAT_NOT_RDY 0x80 |
| 43 | |
| 44 | /* |
| 45 | * ADT7410 config |
| 46 | */ |
| 47 | #define ADT7410_FAULT_QUEUE_MASK 0x3 |
| 48 | #define ADT7410_CT_POLARITY 0x4 |
| 49 | #define ADT7410_INT_POLARITY 0x8 |
| 50 | #define ADT7410_EVENT_MODE 0x10 |
| 51 | #define ADT7410_MODE_MASK 0x60 |
| 52 | #define ADT7410_ONESHOT 0x20 |
| 53 | #define ADT7410_SPS 0x40 |
| 54 | #define ADT7410_PD 0x60 |
| 55 | #define ADT7410_RESOLUTION 0x80 |
| 56 | |
| 57 | /* |
| 58 | * ADT7410 masks |
| 59 | */ |
| 60 | #define ADT7410_T16_VALUE_SIGN 0x8000 |
| 61 | #define ADT7410_T16_VALUE_FLOAT_OFFSET 7 |
| 62 | #define ADT7410_T16_VALUE_FLOAT_MASK 0x7F |
| 63 | #define ADT7410_T13_VALUE_SIGN 0x1000 |
| 64 | #define ADT7410_T13_VALUE_OFFSET 3 |
| 65 | #define ADT7410_T13_VALUE_FLOAT_OFFSET 4 |
| 66 | #define ADT7410_T13_VALUE_FLOAT_MASK 0xF |
| 67 | #define ADT7410_T_HYST_MASK 0xF |
| 68 | #define ADT7410_DEVICE_ID_MASK 0xF |
| 69 | #define ADT7410_MANUFACTORY_ID_MASK 0xF0 |
| 70 | #define ADT7410_MANUFACTORY_ID_OFFSET 4 |
| 71 | |
| 72 | #define ADT7410_IRQS 2 |
| 73 | |
| 74 | /* |
| 75 | * struct adt7410_chip_info - chip specifc information |
| 76 | */ |
| 77 | |
| 78 | struct adt7410_chip_info { |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 79 | struct i2c_client *client; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 80 | u8 config; |
| 81 | }; |
| 82 | |
| 83 | /* |
| 84 | * adt7410 register access by I2C |
| 85 | */ |
| 86 | |
| 87 | static int adt7410_i2c_read_word(struct adt7410_chip_info *chip, u8 reg, u16 *data) |
| 88 | { |
| 89 | struct i2c_client *client = chip->client; |
| 90 | int ret = 0; |
| 91 | |
| 92 | ret = i2c_smbus_read_word_data(client, reg); |
| 93 | if (ret < 0) { |
| 94 | dev_err(&client->dev, "I2C read error\n"); |
| 95 | return ret; |
| 96 | } |
| 97 | |
| 98 | *data = swab16((u16)ret); |
| 99 | |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | static int adt7410_i2c_write_word(struct adt7410_chip_info *chip, u8 reg, u16 data) |
| 104 | { |
| 105 | struct i2c_client *client = chip->client; |
| 106 | int ret = 0; |
| 107 | |
| 108 | ret = i2c_smbus_write_word_data(client, reg, swab16(data)); |
| 109 | if (ret < 0) |
| 110 | dev_err(&client->dev, "I2C write error\n"); |
| 111 | |
| 112 | return ret; |
| 113 | } |
| 114 | |
| 115 | static int adt7410_i2c_read_byte(struct adt7410_chip_info *chip, u8 reg, u8 *data) |
| 116 | { |
| 117 | struct i2c_client *client = chip->client; |
| 118 | int ret = 0; |
| 119 | |
| 120 | ret = i2c_smbus_read_byte_data(client, reg); |
| 121 | if (ret < 0) { |
| 122 | dev_err(&client->dev, "I2C read error\n"); |
| 123 | return ret; |
| 124 | } |
| 125 | |
| 126 | *data = (u8)ret; |
| 127 | |
| 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | static int adt7410_i2c_write_byte(struct adt7410_chip_info *chip, u8 reg, u8 data) |
| 132 | { |
| 133 | struct i2c_client *client = chip->client; |
| 134 | int ret = 0; |
| 135 | |
| 136 | ret = i2c_smbus_write_byte_data(client, reg, data); |
| 137 | if (ret < 0) |
| 138 | dev_err(&client->dev, "I2C write error\n"); |
| 139 | |
| 140 | return ret; |
| 141 | } |
| 142 | |
| 143 | static ssize_t adt7410_show_mode(struct device *dev, |
| 144 | struct device_attribute *attr, |
| 145 | char *buf) |
| 146 | { |
| 147 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 148 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 149 | u8 config; |
| 150 | |
| 151 | config = chip->config & ADT7410_MODE_MASK; |
| 152 | |
| 153 | switch (config) { |
| 154 | case ADT7410_PD: |
| 155 | return sprintf(buf, "power-down\n"); |
| 156 | case ADT7410_ONESHOT: |
| 157 | return sprintf(buf, "one-shot\n"); |
| 158 | case ADT7410_SPS: |
| 159 | return sprintf(buf, "sps\n"); |
| 160 | default: |
| 161 | return sprintf(buf, "full\n"); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | static ssize_t adt7410_store_mode(struct device *dev, |
| 166 | struct device_attribute *attr, |
| 167 | const char *buf, |
| 168 | size_t len) |
| 169 | { |
| 170 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 171 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 172 | u16 config; |
| 173 | int ret; |
| 174 | |
| 175 | ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); |
| 176 | if (ret) |
| 177 | return -EIO; |
| 178 | |
| 179 | config = chip->config & (~ADT7410_MODE_MASK); |
| 180 | if (strcmp(buf, "power-down")) |
| 181 | config |= ADT7410_PD; |
| 182 | else if (strcmp(buf, "one-shot")) |
| 183 | config |= ADT7410_ONESHOT; |
| 184 | else if (strcmp(buf, "sps")) |
| 185 | config |= ADT7410_SPS; |
| 186 | |
| 187 | ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, config); |
| 188 | if (ret) |
| 189 | return -EIO; |
| 190 | |
| 191 | chip->config = config; |
| 192 | |
| 193 | return ret; |
| 194 | } |
| 195 | |
| 196 | static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, |
| 197 | adt7410_show_mode, |
| 198 | adt7410_store_mode, |
| 199 | 0); |
| 200 | |
| 201 | static ssize_t adt7410_show_available_modes(struct device *dev, |
| 202 | struct device_attribute *attr, |
| 203 | char *buf) |
| 204 | { |
| 205 | return sprintf(buf, "full\none-shot\nsps\npower-down\n"); |
| 206 | } |
| 207 | |
| 208 | static IIO_DEVICE_ATTR(available_modes, S_IRUGO, adt7410_show_available_modes, NULL, 0); |
| 209 | |
| 210 | static ssize_t adt7410_show_resolution(struct device *dev, |
| 211 | struct device_attribute *attr, |
| 212 | char *buf) |
| 213 | { |
| 214 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 215 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 216 | int ret; |
| 217 | int bits; |
| 218 | |
| 219 | ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); |
| 220 | if (ret) |
| 221 | return -EIO; |
| 222 | |
| 223 | if (chip->config & ADT7410_RESOLUTION) |
| 224 | bits = 16; |
| 225 | else |
| 226 | bits = 13; |
| 227 | |
| 228 | return sprintf(buf, "%d bits\n", bits); |
| 229 | } |
| 230 | |
| 231 | static ssize_t adt7410_store_resolution(struct device *dev, |
| 232 | struct device_attribute *attr, |
| 233 | const char *buf, |
| 234 | size_t len) |
| 235 | { |
| 236 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 237 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 238 | unsigned long data; |
| 239 | u16 config; |
| 240 | int ret; |
| 241 | |
| 242 | ret = strict_strtoul(buf, 10, &data); |
| 243 | if (ret) |
| 244 | return -EINVAL; |
| 245 | |
| 246 | ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); |
| 247 | if (ret) |
| 248 | return -EIO; |
| 249 | |
| 250 | config = chip->config & (~ADT7410_RESOLUTION); |
| 251 | if (data) |
| 252 | config |= ADT7410_RESOLUTION; |
| 253 | |
| 254 | ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, config); |
| 255 | if (ret) |
| 256 | return -EIO; |
| 257 | |
| 258 | chip->config = config; |
| 259 | |
| 260 | return ret; |
| 261 | } |
| 262 | |
| 263 | static IIO_DEVICE_ATTR(resolution, S_IRUGO | S_IWUSR, |
| 264 | adt7410_show_resolution, |
| 265 | adt7410_store_resolution, |
| 266 | 0); |
| 267 | |
| 268 | static ssize_t adt7410_show_id(struct device *dev, |
| 269 | struct device_attribute *attr, |
| 270 | char *buf) |
| 271 | { |
| 272 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 273 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 274 | u8 id; |
| 275 | int ret; |
| 276 | |
| 277 | ret = adt7410_i2c_read_byte(chip, ADT7410_ID, &id); |
| 278 | if (ret) |
| 279 | return -EIO; |
| 280 | |
| 281 | return sprintf(buf, "device id: 0x%x\nmanufactory id: 0x%x\n", |
| 282 | id & ADT7410_DEVICE_ID_MASK, |
| 283 | (id & ADT7410_MANUFACTORY_ID_MASK) >> ADT7410_MANUFACTORY_ID_OFFSET); |
| 284 | } |
| 285 | |
| 286 | static IIO_DEVICE_ATTR(id, S_IRUGO | S_IWUSR, |
| 287 | adt7410_show_id, |
| 288 | NULL, |
| 289 | 0); |
| 290 | |
| 291 | static ssize_t adt7410_convert_temperature(struct adt7410_chip_info *chip, |
| 292 | u16 data, char *buf) |
| 293 | { |
| 294 | char sign = ' '; |
| 295 | |
| 296 | if (chip->config & ADT7410_RESOLUTION) { |
| 297 | if (data & ADT7410_T16_VALUE_SIGN) { |
| 298 | /* convert supplement to positive value */ |
| 299 | data = (u16)((ADT7410_T16_VALUE_SIGN << 1) - (u32)data); |
| 300 | sign = '-'; |
| 301 | } |
| 302 | return sprintf(buf, "%c%d.%.7d\n", sign, |
| 303 | (data >> ADT7410_T16_VALUE_FLOAT_OFFSET), |
| 304 | (data & ADT7410_T16_VALUE_FLOAT_MASK) * 78125); |
| 305 | } else { |
| 306 | if (data & ADT7410_T13_VALUE_SIGN) { |
| 307 | /* convert supplement to positive value */ |
| 308 | data >>= ADT7410_T13_VALUE_OFFSET; |
| 309 | data = (ADT7410_T13_VALUE_SIGN << 1) - data; |
| 310 | sign = '-'; |
| 311 | } |
| 312 | return sprintf(buf, "%c%d.%.4d\n", sign, |
| 313 | (data >> ADT7410_T13_VALUE_FLOAT_OFFSET), |
| 314 | (data & ADT7410_T13_VALUE_FLOAT_MASK) * 625); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | static ssize_t adt7410_show_value(struct device *dev, |
| 319 | struct device_attribute *attr, |
| 320 | char *buf) |
| 321 | { |
| 322 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 323 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 324 | u8 status; |
| 325 | u16 data; |
| 326 | int ret, i = 0; |
| 327 | |
| 328 | do { |
| 329 | ret = adt7410_i2c_read_byte(chip, ADT7410_STATUS, &status); |
| 330 | if (ret) |
| 331 | return -EIO; |
| 332 | i++; |
| 333 | if (i == 10000) |
| 334 | return -EIO; |
| 335 | } while (status & ADT7410_STAT_NOT_RDY); |
| 336 | |
| 337 | ret = adt7410_i2c_read_word(chip, ADT7410_TEMPERATURE, &data); |
| 338 | if (ret) |
| 339 | return -EIO; |
| 340 | |
| 341 | return adt7410_convert_temperature(chip, data, buf); |
| 342 | } |
| 343 | |
| 344 | static IIO_DEVICE_ATTR(value, S_IRUGO, adt7410_show_value, NULL, 0); |
| 345 | |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 346 | static struct attribute *adt7410_attributes[] = { |
| 347 | &iio_dev_attr_available_modes.dev_attr.attr, |
| 348 | &iio_dev_attr_mode.dev_attr.attr, |
| 349 | &iio_dev_attr_resolution.dev_attr.attr, |
| 350 | &iio_dev_attr_id.dev_attr.attr, |
| 351 | &iio_dev_attr_value.dev_attr.attr, |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 352 | NULL, |
| 353 | }; |
| 354 | |
| 355 | static const struct attribute_group adt7410_attribute_group = { |
| 356 | .attrs = adt7410_attributes, |
| 357 | }; |
| 358 | |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 359 | static irqreturn_t adt7410_event_handler(int irq, void *private) |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 360 | { |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 361 | struct iio_dev *indio_dev = private; |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 362 | struct adt7410_chip_info *chip = iio_priv(indio_dev); |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 363 | s64 timestamp = iio_get_time_ns(); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 364 | u8 status; |
| 365 | |
| 366 | if (adt7410_i2c_read_byte(chip, ADT7410_STATUS, &status)) |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 367 | return IRQ_HANDLED; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 368 | |
| 369 | if (status & ADT7410_STAT_T_HIGH) |
Jonathan Cameron | 5aa9618 | 2011-08-30 12:41:06 +0100 | [diff] [blame] | 370 | iio_push_event(indio_dev, |
Jonathan Cameron | d1ab855 | 2011-05-18 14:42:17 +0100 | [diff] [blame] | 371 | IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0, |
| 372 | IIO_EV_TYPE_THRESH, |
| 373 | IIO_EV_DIR_RISING), |
| 374 | timestamp); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 375 | if (status & ADT7410_STAT_T_LOW) |
Jonathan Cameron | 5aa9618 | 2011-08-30 12:41:06 +0100 | [diff] [blame] | 376 | iio_push_event(indio_dev, |
Jonathan Cameron | d1ab855 | 2011-05-18 14:42:17 +0100 | [diff] [blame] | 377 | IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0, |
| 378 | IIO_EV_TYPE_THRESH, |
| 379 | IIO_EV_DIR_FALLING), |
| 380 | timestamp); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 381 | if (status & ADT7410_STAT_T_CRIT) |
Jonathan Cameron | 5aa9618 | 2011-08-30 12:41:06 +0100 | [diff] [blame] | 382 | iio_push_event(indio_dev, |
Jonathan Cameron | d1ab855 | 2011-05-18 14:42:17 +0100 | [diff] [blame] | 383 | IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0, |
| 384 | IIO_EV_TYPE_THRESH, |
| 385 | IIO_EV_DIR_RISING), |
| 386 | timestamp); |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 387 | |
| 388 | return IRQ_HANDLED; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 389 | } |
| 390 | |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 391 | static ssize_t adt7410_show_event_mode(struct device *dev, |
| 392 | struct device_attribute *attr, |
| 393 | char *buf) |
| 394 | { |
| 395 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 396 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 397 | int ret; |
| 398 | |
| 399 | ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); |
| 400 | if (ret) |
| 401 | return -EIO; |
| 402 | |
| 403 | if (chip->config & ADT7410_EVENT_MODE) |
| 404 | return sprintf(buf, "interrupt\n"); |
| 405 | else |
| 406 | return sprintf(buf, "comparator\n"); |
| 407 | } |
| 408 | |
| 409 | static ssize_t adt7410_set_event_mode(struct device *dev, |
| 410 | struct device_attribute *attr, |
| 411 | const char *buf, |
| 412 | size_t len) |
| 413 | { |
| 414 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 415 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 416 | u16 config; |
| 417 | int ret; |
| 418 | |
| 419 | ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); |
| 420 | if (ret) |
| 421 | return -EIO; |
| 422 | |
| 423 | config = chip->config &= ~ADT7410_EVENT_MODE; |
| 424 | if (strcmp(buf, "comparator") != 0) |
| 425 | config |= ADT7410_EVENT_MODE; |
| 426 | |
| 427 | ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, config); |
| 428 | if (ret) |
| 429 | return -EIO; |
| 430 | |
| 431 | chip->config = config; |
| 432 | |
| 433 | return ret; |
| 434 | } |
| 435 | |
| 436 | static ssize_t adt7410_show_available_event_modes(struct device *dev, |
| 437 | struct device_attribute *attr, |
| 438 | char *buf) |
| 439 | { |
| 440 | return sprintf(buf, "comparator\ninterrupt\n"); |
| 441 | } |
| 442 | |
| 443 | static ssize_t adt7410_show_fault_queue(struct device *dev, |
| 444 | struct device_attribute *attr, |
| 445 | char *buf) |
| 446 | { |
| 447 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 448 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 449 | int ret; |
| 450 | |
| 451 | ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); |
| 452 | if (ret) |
| 453 | return -EIO; |
| 454 | |
| 455 | return sprintf(buf, "%d\n", chip->config & ADT7410_FAULT_QUEUE_MASK); |
| 456 | } |
| 457 | |
| 458 | static ssize_t adt7410_set_fault_queue(struct device *dev, |
| 459 | struct device_attribute *attr, |
| 460 | const char *buf, |
| 461 | size_t len) |
| 462 | { |
| 463 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 464 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 465 | unsigned long data; |
| 466 | int ret; |
| 467 | u8 config; |
| 468 | |
| 469 | ret = strict_strtoul(buf, 10, &data); |
| 470 | if (ret || data > 3) |
| 471 | return -EINVAL; |
| 472 | |
| 473 | ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); |
| 474 | if (ret) |
| 475 | return -EIO; |
| 476 | |
| 477 | config = chip->config & ~ADT7410_FAULT_QUEUE_MASK; |
| 478 | config |= data; |
| 479 | ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, config); |
| 480 | if (ret) |
| 481 | return -EIO; |
| 482 | |
| 483 | chip->config = config; |
| 484 | |
| 485 | return ret; |
| 486 | } |
| 487 | |
| 488 | static inline ssize_t adt7410_show_t_bound(struct device *dev, |
| 489 | struct device_attribute *attr, |
| 490 | u8 bound_reg, |
| 491 | char *buf) |
| 492 | { |
| 493 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 494 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 495 | u16 data; |
| 496 | int ret; |
| 497 | |
| 498 | ret = adt7410_i2c_read_word(chip, bound_reg, &data); |
| 499 | if (ret) |
| 500 | return -EIO; |
| 501 | |
| 502 | return adt7410_convert_temperature(chip, data, buf); |
| 503 | } |
| 504 | |
| 505 | static inline ssize_t adt7410_set_t_bound(struct device *dev, |
| 506 | struct device_attribute *attr, |
| 507 | u8 bound_reg, |
| 508 | const char *buf, |
| 509 | size_t len) |
| 510 | { |
| 511 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 512 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 513 | long tmp1, tmp2; |
| 514 | u16 data; |
| 515 | char *pos; |
| 516 | int ret; |
| 517 | |
| 518 | pos = strchr(buf, '.'); |
| 519 | |
| 520 | ret = strict_strtol(buf, 10, &tmp1); |
| 521 | |
| 522 | if (ret || tmp1 > 127 || tmp1 < -128) |
| 523 | return -EINVAL; |
| 524 | |
| 525 | if (pos) { |
| 526 | len = strlen(pos); |
| 527 | |
| 528 | if (chip->config & ADT7410_RESOLUTION) { |
| 529 | if (len > ADT7410_T16_VALUE_FLOAT_OFFSET) |
| 530 | len = ADT7410_T16_VALUE_FLOAT_OFFSET; |
| 531 | pos[len] = 0; |
| 532 | ret = strict_strtol(pos, 10, &tmp2); |
| 533 | |
| 534 | if (!ret) |
| 535 | tmp2 = (tmp2 / 78125) * 78125; |
| 536 | } else { |
| 537 | if (len > ADT7410_T13_VALUE_FLOAT_OFFSET) |
| 538 | len = ADT7410_T13_VALUE_FLOAT_OFFSET; |
| 539 | pos[len] = 0; |
| 540 | ret = strict_strtol(pos, 10, &tmp2); |
| 541 | |
| 542 | if (!ret) |
| 543 | tmp2 = (tmp2 / 625) * 625; |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | if (tmp1 < 0) |
| 548 | data = (u16)(-tmp1); |
| 549 | else |
| 550 | data = (u16)tmp1; |
| 551 | |
| 552 | if (chip->config & ADT7410_RESOLUTION) { |
| 553 | data = (data << ADT7410_T16_VALUE_FLOAT_OFFSET) | |
| 554 | (tmp2 & ADT7410_T16_VALUE_FLOAT_MASK); |
| 555 | |
| 556 | if (tmp1 < 0) |
| 557 | /* convert positive value to supplyment */ |
| 558 | data = (u16)((ADT7410_T16_VALUE_SIGN << 1) - (u32)data); |
| 559 | } else { |
| 560 | data = (data << ADT7410_T13_VALUE_FLOAT_OFFSET) | |
| 561 | (tmp2 & ADT7410_T13_VALUE_FLOAT_MASK); |
| 562 | |
| 563 | if (tmp1 < 0) |
| 564 | /* convert positive value to supplyment */ |
| 565 | data = (ADT7410_T13_VALUE_SIGN << 1) - data; |
| 566 | data <<= ADT7410_T13_VALUE_OFFSET; |
| 567 | } |
| 568 | |
| 569 | ret = adt7410_i2c_write_word(chip, bound_reg, data); |
| 570 | if (ret) |
| 571 | return -EIO; |
| 572 | |
| 573 | return ret; |
| 574 | } |
| 575 | |
| 576 | static ssize_t adt7410_show_t_alarm_high(struct device *dev, |
| 577 | struct device_attribute *attr, |
| 578 | char *buf) |
| 579 | { |
| 580 | return adt7410_show_t_bound(dev, attr, |
| 581 | ADT7410_T_ALARM_HIGH, buf); |
| 582 | } |
| 583 | |
| 584 | static inline ssize_t adt7410_set_t_alarm_high(struct device *dev, |
| 585 | struct device_attribute *attr, |
| 586 | const char *buf, |
| 587 | size_t len) |
| 588 | { |
| 589 | return adt7410_set_t_bound(dev, attr, |
| 590 | ADT7410_T_ALARM_HIGH, buf, len); |
| 591 | } |
| 592 | |
| 593 | static ssize_t adt7410_show_t_alarm_low(struct device *dev, |
| 594 | struct device_attribute *attr, |
| 595 | char *buf) |
| 596 | { |
| 597 | return adt7410_show_t_bound(dev, attr, |
| 598 | ADT7410_T_ALARM_LOW, buf); |
| 599 | } |
| 600 | |
| 601 | static inline ssize_t adt7410_set_t_alarm_low(struct device *dev, |
| 602 | struct device_attribute *attr, |
| 603 | const char *buf, |
| 604 | size_t len) |
| 605 | { |
| 606 | return adt7410_set_t_bound(dev, attr, |
| 607 | ADT7410_T_ALARM_LOW, buf, len); |
| 608 | } |
| 609 | |
| 610 | static ssize_t adt7410_show_t_crit(struct device *dev, |
| 611 | struct device_attribute *attr, |
| 612 | char *buf) |
| 613 | { |
| 614 | return adt7410_show_t_bound(dev, attr, |
| 615 | ADT7410_T_CRIT, buf); |
| 616 | } |
| 617 | |
| 618 | static inline ssize_t adt7410_set_t_crit(struct device *dev, |
| 619 | struct device_attribute *attr, |
| 620 | const char *buf, |
| 621 | size_t len) |
| 622 | { |
| 623 | return adt7410_set_t_bound(dev, attr, |
| 624 | ADT7410_T_CRIT, buf, len); |
| 625 | } |
| 626 | |
| 627 | static ssize_t adt7410_show_t_hyst(struct device *dev, |
| 628 | struct device_attribute *attr, |
| 629 | char *buf) |
| 630 | { |
| 631 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 632 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 633 | int ret; |
| 634 | u8 t_hyst; |
| 635 | |
| 636 | ret = adt7410_i2c_read_byte(chip, ADT7410_T_HYST, &t_hyst); |
| 637 | if (ret) |
| 638 | return -EIO; |
| 639 | |
| 640 | return sprintf(buf, "%d\n", t_hyst & ADT7410_T_HYST_MASK); |
| 641 | } |
| 642 | |
| 643 | static inline ssize_t adt7410_set_t_hyst(struct device *dev, |
| 644 | struct device_attribute *attr, |
| 645 | const char *buf, |
| 646 | size_t len) |
| 647 | { |
| 648 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 649 | struct adt7410_chip_info *chip = iio_priv(dev_info); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 650 | int ret; |
| 651 | unsigned long data; |
| 652 | u8 t_hyst; |
| 653 | |
| 654 | ret = strict_strtol(buf, 10, &data); |
| 655 | |
| 656 | if (ret || data > ADT7410_T_HYST_MASK) |
| 657 | return -EINVAL; |
| 658 | |
| 659 | t_hyst = (u8)data; |
| 660 | |
| 661 | ret = adt7410_i2c_write_byte(chip, ADT7410_T_HYST, t_hyst); |
| 662 | if (ret) |
| 663 | return -EIO; |
| 664 | |
| 665 | return ret; |
| 666 | } |
| 667 | |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 668 | static IIO_DEVICE_ATTR(event_mode, |
| 669 | S_IRUGO | S_IWUSR, |
| 670 | adt7410_show_event_mode, adt7410_set_event_mode, 0); |
| 671 | static IIO_DEVICE_ATTR(available_event_modes, |
| 672 | S_IRUGO, |
| 673 | adt7410_show_available_event_modes, NULL, 0); |
| 674 | static IIO_DEVICE_ATTR(fault_queue, |
| 675 | S_IRUGO | S_IWUSR, |
| 676 | adt7410_show_fault_queue, adt7410_set_fault_queue, 0); |
| 677 | static IIO_DEVICE_ATTR(t_alarm_high, |
| 678 | S_IRUGO | S_IWUSR, |
| 679 | adt7410_show_t_alarm_high, adt7410_set_t_alarm_high, 0); |
| 680 | static IIO_DEVICE_ATTR(t_alarm_low, |
| 681 | S_IRUGO | S_IWUSR, |
| 682 | adt7410_show_t_alarm_low, adt7410_set_t_alarm_low, 0); |
| 683 | static IIO_DEVICE_ATTR(t_crit, |
| 684 | S_IRUGO | S_IWUSR, |
| 685 | adt7410_show_t_crit, adt7410_set_t_crit, 0); |
| 686 | static IIO_DEVICE_ATTR(t_hyst, |
| 687 | S_IRUGO | S_IWUSR, |
| 688 | adt7410_show_t_hyst, adt7410_set_t_hyst, 0); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 689 | |
| 690 | static struct attribute *adt7410_event_int_attributes[] = { |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 691 | &iio_dev_attr_event_mode.dev_attr.attr, |
| 692 | &iio_dev_attr_available_event_modes.dev_attr.attr, |
| 693 | &iio_dev_attr_fault_queue.dev_attr.attr, |
| 694 | &iio_dev_attr_t_alarm_high.dev_attr.attr, |
| 695 | &iio_dev_attr_t_alarm_low.dev_attr.attr, |
| 696 | &iio_dev_attr_t_hyst.dev_attr.attr, |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 697 | NULL, |
| 698 | }; |
| 699 | |
| 700 | static struct attribute *adt7410_event_ct_attributes[] = { |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 701 | &iio_dev_attr_event_mode.dev_attr.attr, |
| 702 | &iio_dev_attr_available_event_modes.dev_attr.attr, |
| 703 | &iio_dev_attr_fault_queue.dev_attr.attr, |
| 704 | &iio_dev_attr_t_crit.dev_attr.attr, |
| 705 | &iio_dev_attr_t_hyst.dev_attr.attr, |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 706 | NULL, |
| 707 | }; |
| 708 | |
| 709 | static struct attribute_group adt7410_event_attribute_group[ADT7410_IRQS] = { |
| 710 | { |
| 711 | .attrs = adt7410_event_int_attributes, |
Jonathan Cameron | 8e7d967 | 2011-08-30 12:32:45 +0100 | [diff] [blame] | 712 | .name = "events", |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 713 | }, { |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 714 | .attrs = adt7410_event_ct_attributes, |
Jonathan Cameron | 8e7d967 | 2011-08-30 12:32:45 +0100 | [diff] [blame] | 715 | .name = "events", |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 716 | } |
| 717 | }; |
| 718 | |
Jonathan Cameron | 6fe8135 | 2011-05-18 14:42:37 +0100 | [diff] [blame] | 719 | static const struct iio_info adt7410_info = { |
| 720 | .attrs = &adt7410_attribute_group, |
Jonathan Cameron | 6fe8135 | 2011-05-18 14:42:37 +0100 | [diff] [blame] | 721 | .event_attrs = adt7410_event_attribute_group, |
| 722 | .driver_module = THIS_MODULE, |
| 723 | }; |
| 724 | |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 725 | /* |
| 726 | * device probe and remove |
| 727 | */ |
| 728 | |
| 729 | static int __devinit adt7410_probe(struct i2c_client *client, |
| 730 | const struct i2c_device_id *id) |
| 731 | { |
| 732 | struct adt7410_chip_info *chip; |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 733 | struct iio_dev *indio_dev; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 734 | int ret = 0; |
| 735 | unsigned long *adt7410_platform_data = client->dev.platform_data; |
| 736 | |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 737 | indio_dev = iio_allocate_device(sizeof(*chip)); |
| 738 | if (indio_dev == NULL) { |
| 739 | ret = -ENOMEM; |
| 740 | goto error_ret; |
| 741 | } |
| 742 | chip = iio_priv(indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 743 | /* this is only used for device removal purposes */ |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 744 | i2c_set_clientdata(client, indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 745 | |
| 746 | chip->client = client; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 747 | |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 748 | indio_dev->name = id->name; |
| 749 | indio_dev->dev.parent = &client->dev; |
| 750 | indio_dev->info = &adt7410_info; |
| 751 | indio_dev->modes = INDIO_DIRECT_MODE; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 752 | |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 753 | /* CT critcal temperature event. line 0 */ |
| 754 | if (client->irq) { |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 755 | ret = request_threaded_irq(client->irq, |
| 756 | NULL, |
| 757 | &adt7410_event_handler, |
| 758 | IRQF_TRIGGER_LOW, |
Jonathan Cameron | 845bd12 | 2011-05-18 14:41:44 +0100 | [diff] [blame] | 759 | id->name, |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 760 | indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 761 | if (ret) |
Jonathan Cameron | 26d25ae | 2011-09-02 17:14:40 +0100 | [diff] [blame] | 762 | goto error_free_dev; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 763 | } |
| 764 | |
| 765 | /* INT bound temperature alarm event. line 1 */ |
| 766 | if (adt7410_platform_data[0]) { |
Jonathan Cameron | 9c6b6ba | 2011-05-18 14:41:12 +0100 | [diff] [blame] | 767 | ret = request_threaded_irq(adt7410_platform_data[0], |
| 768 | NULL, |
| 769 | &adt7410_event_handler, |
| 770 | adt7410_platform_data[1], |
Jonathan Cameron | 845bd12 | 2011-05-18 14:41:44 +0100 | [diff] [blame] | 771 | id->name, |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 772 | indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 773 | if (ret) |
| 774 | goto error_unreg_ct_irq; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | if (client->irq && adt7410_platform_data[0]) { |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 778 | |
| 779 | ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); |
| 780 | if (ret) { |
| 781 | ret = -EIO; |
| 782 | goto error_unreg_int_irq; |
| 783 | } |
| 784 | |
| 785 | /* set irq polarity low level */ |
| 786 | chip->config &= ~ADT7410_CT_POLARITY; |
| 787 | |
| 788 | if (adt7410_platform_data[1] & IRQF_TRIGGER_HIGH) |
| 789 | chip->config |= ADT7410_INT_POLARITY; |
| 790 | else |
| 791 | chip->config &= ~ADT7410_INT_POLARITY; |
| 792 | |
| 793 | ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, chip->config); |
| 794 | if (ret) { |
| 795 | ret = -EIO; |
| 796 | goto error_unreg_int_irq; |
| 797 | } |
| 798 | } |
Jonathan Cameron | 26d25ae | 2011-09-02 17:14:40 +0100 | [diff] [blame] | 799 | ret = iio_device_register(indio_dev); |
| 800 | if (ret) |
| 801 | goto error_unreg_int_irq; |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 802 | |
| 803 | dev_info(&client->dev, "%s temperature sensor registered.\n", |
| 804 | id->name); |
| 805 | |
| 806 | return 0; |
| 807 | |
| 808 | error_unreg_int_irq: |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 809 | free_irq(adt7410_platform_data[0], indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 810 | error_unreg_ct_irq: |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 811 | free_irq(client->irq, indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 812 | error_free_dev: |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 813 | iio_free_device(indio_dev); |
| 814 | error_ret: |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 815 | return ret; |
| 816 | } |
| 817 | |
| 818 | static int __devexit adt7410_remove(struct i2c_client *client) |
| 819 | { |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 820 | struct iio_dev *indio_dev = i2c_get_clientdata(client); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 821 | unsigned long *adt7410_platform_data = client->dev.platform_data; |
| 822 | |
Jonathan Cameron | d2fffd6 | 2011-10-14 14:46:58 +0100 | [diff] [blame] | 823 | iio_device_unregister(indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 824 | if (adt7410_platform_data[0]) |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 825 | free_irq(adt7410_platform_data[0], indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 826 | if (client->irq) |
Jonathan Cameron | d3de293 | 2011-06-27 13:07:30 +0100 | [diff] [blame] | 827 | free_irq(client->irq, indio_dev); |
Jonathan Cameron | d2fffd6 | 2011-10-14 14:46:58 +0100 | [diff] [blame] | 828 | iio_free_device(indio_dev); |
Sonic Zhang | 06b86a7 | 2010-10-27 21:44:02 -0400 | [diff] [blame] | 829 | |
| 830 | return 0; |
| 831 | } |
| 832 | |
| 833 | static const struct i2c_device_id adt7410_id[] = { |
| 834 | { "adt7410", 0 }, |
| 835 | {} |
| 836 | }; |
| 837 | |
| 838 | MODULE_DEVICE_TABLE(i2c, adt7410_id); |
| 839 | |
| 840 | static struct i2c_driver adt7410_driver = { |
| 841 | .driver = { |
| 842 | .name = "adt7410", |
| 843 | }, |
| 844 | .probe = adt7410_probe, |
| 845 | .remove = __devexit_p(adt7410_remove), |
| 846 | .id_table = adt7410_id, |
| 847 | }; |
| 848 | |
| 849 | static __init int adt7410_init(void) |
| 850 | { |
| 851 | return i2c_add_driver(&adt7410_driver); |
| 852 | } |
| 853 | |
| 854 | static __exit void adt7410_exit(void) |
| 855 | { |
| 856 | i2c_del_driver(&adt7410_driver); |
| 857 | } |
| 858 | |
| 859 | MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>"); |
| 860 | MODULE_DESCRIPTION("Analog Devices ADT7410 digital" |
| 861 | " temperature sensor driver"); |
| 862 | MODULE_LICENSE("GPL v2"); |
| 863 | |
| 864 | module_init(adt7410_init); |
| 865 | module_exit(adt7410_exit); |