1 /* 2 * f75375s.c - driver for the Fintek F75375/SP and F75373 3 * hardware monitoring features 4 * Copyright (C) 2006-2007 Riku Voipio <riku.voipio@movial.fi> 5 * 6 * Datasheets available at: 7 * 8 * f75375: 9 * http://www.fintek.com.tw/files/productfiles/2005111152950.pdf 10 * 11 * f75373: 12 * http://www.fintek.com.tw/files/productfiles/2005111153128.pdf 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 * 28 */ 29 30 #include <linux/module.h> 31 #include <linux/jiffies.h> 32 #include <linux/hwmon.h> 33 #include <linux/hwmon-sysfs.h> 34 #include <linux/i2c.h> 35 #include <linux/err.h> 36 #include <linux/mutex.h> 37 38 /* Addresses to scan */ 39 static unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END }; 40 41 /* Insmod parameters */ 42 I2C_CLIENT_INSMOD_2(f75373, f75375); 43 44 /* Fintek F75375 registers */ 45 #define F75375_REG_CONFIG0 0x0 46 #define F75375_REG_CONFIG1 0x1 47 #define F75375_REG_CONFIG2 0x2 48 #define F75375_REG_CONFIG3 0x3 49 #define F75375_REG_ADDR 0x4 50 #define F75375_REG_INTR 0x31 51 #define F75375_CHIP_ID 0x5A 52 #define F75375_REG_VERSION 0x5C 53 #define F75375_REG_VENDOR 0x5D 54 #define F75375_REG_FAN_TIMER 0x60 55 56 #define F75375_REG_VOLT(nr) (0x10 + (nr)) 57 #define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2) 58 #define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2) 59 60 #define F75375_REG_TEMP(nr) (0x14 + (nr)) 61 #define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2) 62 #define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2) 63 64 #define F75375_REG_FAN(nr) (0x16 + (nr) * 2) 65 #define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2) 66 #define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10) 67 #define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10) 68 #define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10) 69 70 #define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10) 71 #define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step)) 72 #define F75375_REG_FAN_B_SPEED(nr, step) \ 73 ((0xA5 + (nr) * 0x10) + (step) * 2) 74 75 #define F75375_REG_PWM1_RAISE_DUTY 0x69 76 #define F75375_REG_PWM2_RAISE_DUTY 0x6A 77 #define F75375_REG_PWM1_DROP_DUTY 0x6B 78 #define F75375_REG_PWM2_DROP_DUTY 0x6C 79 80 #define FAN_CTRL_LINEAR(nr) (4 + nr) 81 #define FAN_CTRL_MODE(nr) (5 + ((nr) * 2)) 82 83 /* 84 * Data structures and manipulation thereof 85 */ 86 87 struct f75375_data { 88 unsigned short addr; 89 struct i2c_client client; 90 struct device *hwmon_dev; 91 92 const char *name; 93 int kind; 94 struct mutex update_lock; /* protect register access */ 95 char valid; 96 unsigned long last_updated; /* In jiffies */ 97 unsigned long last_limits; /* In jiffies */ 98 99 /* Register values */ 100 u8 in[4]; 101 u8 in_max[4]; 102 u8 in_min[4]; 103 u16 fan[2]; 104 u16 fan_min[2]; 105 u16 fan_full[2]; 106 u16 fan_exp[2]; 107 u8 fan_timer; 108 u8 pwm[2]; 109 u8 pwm_mode[2]; 110 u8 pwm_enable[2]; 111 s8 temp[2]; 112 s8 temp_high[2]; 113 s8 temp_max_hyst[2]; 114 }; 115 116 static int f75375_attach_adapter(struct i2c_adapter *adapter); 117 static int f75375_detect(struct i2c_adapter *adapter, int address, int kind); 118 static int f75375_detach_client(struct i2c_client *client); 119 120 static struct i2c_driver f75375_driver = { 121 .driver = { 122 .name = "f75375", 123 }, 124 .attach_adapter = f75375_attach_adapter, 125 .detach_client = f75375_detach_client, 126 }; 127 128 static inline int f75375_read8(struct i2c_client *client, u8 reg) 129 { 130 return i2c_smbus_read_byte_data(client, reg); 131 } 132 133 /* in most cases, should be called while holding update_lock */ 134 static inline u16 f75375_read16(struct i2c_client *client, u8 reg) 135 { 136 return ((i2c_smbus_read_byte_data(client, reg) << 8) 137 | i2c_smbus_read_byte_data(client, reg + 1)); 138 } 139 140 static inline void f75375_write8(struct i2c_client *client, u8 reg, 141 u8 value) 142 { 143 i2c_smbus_write_byte_data(client, reg, value); 144 } 145 146 static inline void f75375_write16(struct i2c_client *client, u8 reg, 147 u16 value) 148 { 149 int err = i2c_smbus_write_byte_data(client, reg, (value << 8)); 150 if (err) 151 return; 152 i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF)); 153 } 154 155 static struct f75375_data *f75375_update_device(struct device *dev) 156 { 157 struct i2c_client *client = to_i2c_client(dev); 158 struct f75375_data *data = i2c_get_clientdata(client); 159 int nr; 160 161 mutex_lock(&data->update_lock); 162 163 /* Limit registers cache is refreshed after 60 seconds */ 164 if (time_after(jiffies, data->last_limits + 60 * HZ) 165 || !data->valid) { 166 for (nr = 0; nr < 2; nr++) { 167 data->temp_high[nr] = 168 f75375_read8(client, F75375_REG_TEMP_HIGH(nr)); 169 data->temp_max_hyst[nr] = 170 f75375_read8(client, F75375_REG_TEMP_HYST(nr)); 171 data->fan_full[nr] = 172 f75375_read16(client, F75375_REG_FAN_FULL(nr)); 173 data->fan_min[nr] = 174 f75375_read16(client, F75375_REG_FAN_MIN(nr)); 175 data->fan_exp[nr] = 176 f75375_read16(client, F75375_REG_FAN_EXP(nr)); 177 data->pwm[nr] = f75375_read8(client, 178 F75375_REG_FAN_PWM_DUTY(nr)); 179 180 } 181 for (nr = 0; nr < 4; nr++) { 182 data->in_max[nr] = 183 f75375_read8(client, F75375_REG_VOLT_HIGH(nr)); 184 data->in_min[nr] = 185 f75375_read8(client, F75375_REG_VOLT_LOW(nr)); 186 } 187 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER); 188 data->last_limits = jiffies; 189 } 190 191 /* Measurement registers cache is refreshed after 2 second */ 192 if (time_after(jiffies, data->last_updated + 2 * HZ) 193 || !data->valid) { 194 for (nr = 0; nr < 2; nr++) { 195 data->temp[nr] = 196 f75375_read8(client, F75375_REG_TEMP(nr)); 197 data->fan[nr] = 198 f75375_read16(client, F75375_REG_FAN(nr)); 199 } 200 for (nr = 0; nr < 4; nr++) 201 data->in[nr] = 202 f75375_read8(client, F75375_REG_VOLT(nr)); 203 204 data->last_updated = jiffies; 205 data->valid = 1; 206 } 207 208 mutex_unlock(&data->update_lock); 209 return data; 210 } 211 212 static inline u16 rpm_from_reg(u16 reg) 213 { 214 if (reg == 0 || reg == 0xffff) 215 return 0; 216 return (1500000 / reg); 217 } 218 219 static inline u16 rpm_to_reg(int rpm) 220 { 221 if (rpm < 367 || rpm > 0xffff) 222 return 0xffff; 223 return (1500000 / rpm); 224 } 225 226 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 227 const char *buf, size_t count) 228 { 229 int nr = to_sensor_dev_attr(attr)->index; 230 struct i2c_client *client = to_i2c_client(dev); 231 struct f75375_data *data = i2c_get_clientdata(client); 232 int val = simple_strtoul(buf, NULL, 10); 233 234 mutex_lock(&data->update_lock); 235 data->fan_min[nr] = rpm_to_reg(val); 236 f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]); 237 mutex_unlock(&data->update_lock); 238 return count; 239 } 240 241 static ssize_t set_fan_exp(struct device *dev, struct device_attribute *attr, 242 const char *buf, size_t count) 243 { 244 int nr = to_sensor_dev_attr(attr)->index; 245 struct i2c_client *client = to_i2c_client(dev); 246 struct f75375_data *data = i2c_get_clientdata(client); 247 int val = simple_strtoul(buf, NULL, 10); 248 249 mutex_lock(&data->update_lock); 250 data->fan_exp[nr] = rpm_to_reg(val); 251 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_exp[nr]); 252 mutex_unlock(&data->update_lock); 253 return count; 254 } 255 256 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 257 const char *buf, size_t count) 258 { 259 int nr = to_sensor_dev_attr(attr)->index; 260 struct i2c_client *client = to_i2c_client(dev); 261 struct f75375_data *data = i2c_get_clientdata(client); 262 int val = simple_strtoul(buf, NULL, 10); 263 264 mutex_lock(&data->update_lock); 265 data->pwm[nr] = SENSORS_LIMIT(val, 0, 255); 266 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]); 267 mutex_unlock(&data->update_lock); 268 return count; 269 } 270 271 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute 272 *attr, char *buf) 273 { 274 int nr = to_sensor_dev_attr(attr)->index; 275 struct f75375_data *data = f75375_update_device(dev); 276 return sprintf(buf, "%d\n", data->pwm_enable[nr]); 277 } 278 279 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, 280 const char *buf, size_t count) 281 { 282 int nr = to_sensor_dev_attr(attr)->index; 283 struct i2c_client *client = to_i2c_client(dev); 284 struct f75375_data *data = i2c_get_clientdata(client); 285 int val = simple_strtoul(buf, NULL, 10); 286 u8 fanmode; 287 288 if (val < 0 || val > 4) 289 return -EINVAL; 290 291 mutex_lock(&data->update_lock); 292 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER); 293 fanmode = ~(3 << FAN_CTRL_MODE(nr)); 294 295 switch (val) { 296 case 0: /* Full speed */ 297 fanmode |= (3 << FAN_CTRL_MODE(nr)); 298 data->pwm[nr] = 255; 299 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), 300 data->pwm[nr]); 301 break; 302 case 1: /* PWM */ 303 fanmode |= (3 << FAN_CTRL_MODE(nr)); 304 break; 305 case 2: /* AUTOMATIC*/ 306 fanmode |= (2 << FAN_CTRL_MODE(nr)); 307 break; 308 case 3: /* fan speed */ 309 break; 310 } 311 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode); 312 data->pwm_enable[nr] = val; 313 mutex_unlock(&data->update_lock); 314 return count; 315 } 316 317 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr, 318 const char *buf, size_t count) 319 { 320 int nr = to_sensor_dev_attr(attr)->index; 321 struct i2c_client *client = to_i2c_client(dev); 322 struct f75375_data *data = i2c_get_clientdata(client); 323 int val = simple_strtoul(buf, NULL, 10); 324 u8 conf = 0; 325 326 if (val != 0 || val != 1 || data->kind == f75373) 327 return -EINVAL; 328 329 mutex_lock(&data->update_lock); 330 conf = f75375_read8(client, F75375_REG_CONFIG1); 331 conf = ~(1 << FAN_CTRL_LINEAR(nr)); 332 333 if (val == 0) 334 conf |= (1 << FAN_CTRL_LINEAR(nr)) ; 335 336 f75375_write8(client, F75375_REG_CONFIG1, conf); 337 data->pwm_mode[nr] = val; 338 mutex_unlock(&data->update_lock); 339 return count; 340 } 341 342 static ssize_t show_pwm(struct device *dev, struct device_attribute 343 *attr, char *buf) 344 { 345 int nr = to_sensor_dev_attr(attr)->index; 346 struct f75375_data *data = f75375_update_device(dev); 347 return sprintf(buf, "%d\n", data->pwm[nr]); 348 } 349 350 static ssize_t show_pwm_mode(struct device *dev, struct device_attribute 351 *attr, char *buf) 352 { 353 int nr = to_sensor_dev_attr(attr)->index; 354 struct f75375_data *data = f75375_update_device(dev); 355 return sprintf(buf, "%d\n", data->pwm_mode[nr]); 356 } 357 358 #define VOLT_FROM_REG(val) ((val) * 8) 359 #define VOLT_TO_REG(val) ((val) / 8) 360 361 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 362 char *buf) 363 { 364 int nr = to_sensor_dev_attr(attr)->index; 365 struct f75375_data *data = f75375_update_device(dev); 366 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr])); 367 } 368 369 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 370 char *buf) 371 { 372 int nr = to_sensor_dev_attr(attr)->index; 373 struct f75375_data *data = f75375_update_device(dev); 374 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr])); 375 } 376 377 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 378 char *buf) 379 { 380 int nr = to_sensor_dev_attr(attr)->index; 381 struct f75375_data *data = f75375_update_device(dev); 382 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr])); 383 } 384 385 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 386 const char *buf, size_t count) 387 { 388 int nr = to_sensor_dev_attr(attr)->index; 389 struct i2c_client *client = to_i2c_client(dev); 390 struct f75375_data *data = i2c_get_clientdata(client); 391 int val = simple_strtoul(buf, NULL, 10); 392 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); 393 mutex_lock(&data->update_lock); 394 data->in_max[nr] = val; 395 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]); 396 mutex_unlock(&data->update_lock); 397 return count; 398 } 399 400 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 401 const char *buf, size_t count) 402 { 403 int nr = to_sensor_dev_attr(attr)->index; 404 struct i2c_client *client = to_i2c_client(dev); 405 struct f75375_data *data = i2c_get_clientdata(client); 406 int val = simple_strtoul(buf, NULL, 10); 407 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); 408 mutex_lock(&data->update_lock); 409 data->in_min[nr] = val; 410 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]); 411 mutex_unlock(&data->update_lock); 412 return count; 413 } 414 #define TEMP_FROM_REG(val) ((val) * 1000) 415 #define TEMP_TO_REG(val) ((val) / 1000) 416 417 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 418 char *buf) 419 { 420 int nr = to_sensor_dev_attr(attr)->index; 421 struct f75375_data *data = f75375_update_device(dev); 422 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); 423 } 424 425 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 426 char *buf) 427 { 428 int nr = to_sensor_dev_attr(attr)->index; 429 struct f75375_data *data = f75375_update_device(dev); 430 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); 431 } 432 433 static ssize_t show_temp_max_hyst(struct device *dev, 434 struct device_attribute *attr, char *buf) 435 { 436 int nr = to_sensor_dev_attr(attr)->index; 437 struct f75375_data *data = f75375_update_device(dev); 438 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr])); 439 } 440 441 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 442 const char *buf, size_t count) 443 { 444 int nr = to_sensor_dev_attr(attr)->index; 445 struct i2c_client *client = to_i2c_client(dev); 446 struct f75375_data *data = i2c_get_clientdata(client); 447 int val = simple_strtol(buf, NULL, 10); 448 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); 449 mutex_lock(&data->update_lock); 450 data->temp_high[nr] = val; 451 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]); 452 mutex_unlock(&data->update_lock); 453 return count; 454 } 455 456 static ssize_t set_temp_max_hyst(struct device *dev, 457 struct device_attribute *attr, const char *buf, size_t count) 458 { 459 int nr = to_sensor_dev_attr(attr)->index; 460 struct i2c_client *client = to_i2c_client(dev); 461 struct f75375_data *data = i2c_get_clientdata(client); 462 int val = simple_strtol(buf, NULL, 10); 463 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); 464 mutex_lock(&data->update_lock); 465 data->temp_max_hyst[nr] = val; 466 f75375_write8(client, F75375_REG_TEMP_HYST(nr), 467 data->temp_max_hyst[nr]); 468 mutex_unlock(&data->update_lock); 469 return count; 470 } 471 472 #define show_fan(thing) \ 473 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \ 474 char *buf)\ 475 {\ 476 int nr = to_sensor_dev_attr(attr)->index;\ 477 struct f75375_data *data = f75375_update_device(dev); \ 478 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \ 479 } 480 481 show_fan(fan); 482 show_fan(fan_min); 483 show_fan(fan_full); 484 show_fan(fan_exp); 485 486 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); 487 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR, 488 show_in_max, set_in_max, 0); 489 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR, 490 show_in_min, set_in_min, 0); 491 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); 492 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR, 493 show_in_max, set_in_max, 1); 494 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR, 495 show_in_min, set_in_min, 1); 496 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); 497 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR, 498 show_in_max, set_in_max, 2); 499 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR, 500 show_in_min, set_in_min, 2); 501 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); 502 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR, 503 show_in_max, set_in_max, 3); 504 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR, 505 show_in_min, set_in_min, 3); 506 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); 507 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, 508 show_temp_max_hyst, set_temp_max_hyst, 0); 509 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR, 510 show_temp_max, set_temp_max, 0); 511 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); 512 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, 513 show_temp_max_hyst, set_temp_max_hyst, 1); 514 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR, 515 show_temp_max, set_temp_max, 1); 516 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 517 static SENSOR_DEVICE_ATTR(fan1_full, S_IRUGO, show_fan_full, NULL, 0); 518 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR, 519 show_fan_min, set_fan_min, 0); 520 static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR, 521 show_fan_exp, set_fan_exp, 0); 522 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); 523 static SENSOR_DEVICE_ATTR(fan2_full, S_IRUGO, show_fan_full, NULL, 1); 524 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR, 525 show_fan_min, set_fan_min, 1); 526 static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR, 527 show_fan_exp, set_fan_exp, 1); 528 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR, 529 show_pwm, set_pwm, 0); 530 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR, 531 show_pwm_enable, set_pwm_enable, 0); 532 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO|S_IWUSR, 533 show_pwm_mode, set_pwm_mode, 0); 534 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, 535 show_pwm, set_pwm, 1); 536 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR, 537 show_pwm_enable, set_pwm_enable, 1); 538 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO|S_IWUSR, 539 show_pwm_mode, set_pwm_mode, 1); 540 541 static struct attribute *f75375_attributes[] = { 542 &sensor_dev_attr_temp1_input.dev_attr.attr, 543 &sensor_dev_attr_temp1_max.dev_attr.attr, 544 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, 545 &sensor_dev_attr_temp2_input.dev_attr.attr, 546 &sensor_dev_attr_temp2_max.dev_attr.attr, 547 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, 548 &sensor_dev_attr_fan1_input.dev_attr.attr, 549 &sensor_dev_attr_fan1_full.dev_attr.attr, 550 &sensor_dev_attr_fan1_min.dev_attr.attr, 551 &sensor_dev_attr_fan1_exp.dev_attr.attr, 552 &sensor_dev_attr_fan2_input.dev_attr.attr, 553 &sensor_dev_attr_fan2_full.dev_attr.attr, 554 &sensor_dev_attr_fan2_min.dev_attr.attr, 555 &sensor_dev_attr_fan2_exp.dev_attr.attr, 556 &sensor_dev_attr_pwm1.dev_attr.attr, 557 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 558 &sensor_dev_attr_pwm1_mode.dev_attr.attr, 559 &sensor_dev_attr_pwm2.dev_attr.attr, 560 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 561 &sensor_dev_attr_pwm2_mode.dev_attr.attr, 562 &sensor_dev_attr_in0_input.dev_attr.attr, 563 &sensor_dev_attr_in0_max.dev_attr.attr, 564 &sensor_dev_attr_in0_min.dev_attr.attr, 565 &sensor_dev_attr_in1_input.dev_attr.attr, 566 &sensor_dev_attr_in1_max.dev_attr.attr, 567 &sensor_dev_attr_in1_min.dev_attr.attr, 568 &sensor_dev_attr_in2_input.dev_attr.attr, 569 &sensor_dev_attr_in2_max.dev_attr.attr, 570 &sensor_dev_attr_in2_min.dev_attr.attr, 571 &sensor_dev_attr_in3_input.dev_attr.attr, 572 &sensor_dev_attr_in3_max.dev_attr.attr, 573 &sensor_dev_attr_in3_min.dev_attr.attr, 574 NULL 575 }; 576 577 static const struct attribute_group f75375_group = { 578 .attrs = f75375_attributes, 579 }; 580 581 static int f75375_detach_client(struct i2c_client *client) 582 { 583 struct f75375_data *data = i2c_get_clientdata(client); 584 int err; 585 586 hwmon_device_unregister(data->hwmon_dev); 587 sysfs_remove_group(&client->dev.kobj, &f75375_group); 588 589 err = i2c_detach_client(client); 590 if (err) { 591 dev_err(&client->dev, 592 "Client deregistration failed, " 593 "client not detached.\n"); 594 return err; 595 } 596 kfree(data); 597 return 0; 598 } 599 600 static int f75375_attach_adapter(struct i2c_adapter *adapter) 601 { 602 if (!(adapter->class & I2C_CLASS_HWMON)) 603 return 0; 604 return i2c_probe(adapter, &addr_data, f75375_detect); 605 } 606 607 /* This function is called by i2c_probe */ 608 static int f75375_detect(struct i2c_adapter *adapter, int address, int kind) 609 { 610 struct i2c_client *client; 611 struct f75375_data *data; 612 u8 version = 0; 613 int err = 0; 614 const char *name = ""; 615 616 if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL))) { 617 err = -ENOMEM; 618 goto exit; 619 } 620 client = &data->client; 621 i2c_set_clientdata(client, data); 622 client->addr = address; 623 client->adapter = adapter; 624 client->driver = &f75375_driver; 625 626 if (kind < 0) { 627 u16 vendid = f75375_read16(client, F75375_REG_VENDOR); 628 u16 chipid = f75375_read16(client, F75375_CHIP_ID); 629 version = f75375_read8(client, F75375_REG_VERSION); 630 if (chipid == 0x0306 && vendid == 0x1934) { 631 kind = f75375; 632 } else if (chipid == 0x0204 && vendid == 0x1934) { 633 kind = f75373; 634 } else { 635 dev_err(&adapter->dev, 636 "failed,%02X,%02X,%02X\n", 637 chipid, version, vendid); 638 goto exit_free; 639 } 640 } 641 642 if (kind == f75375) { 643 name = "f75375"; 644 } else if (kind == f75373) { 645 name = "f75373"; 646 } 647 648 dev_info(&adapter->dev, "found %s version: %02X\n", name, version); 649 strlcpy(client->name, name, I2C_NAME_SIZE); 650 data->kind = kind; 651 mutex_init(&data->update_lock); 652 if ((err = i2c_attach_client(client))) 653 goto exit_free; 654 655 if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group))) 656 goto exit_detach; 657 658 data->hwmon_dev = hwmon_device_register(&client->dev); 659 if (IS_ERR(data->hwmon_dev)) { 660 err = PTR_ERR(data->hwmon_dev); 661 goto exit_remove; 662 } 663 664 return 0; 665 666 exit_remove: 667 sysfs_remove_group(&client->dev.kobj, &f75375_group); 668 exit_detach: 669 i2c_detach_client(client); 670 exit_free: 671 kfree(data); 672 exit: 673 return err; 674 } 675 676 static int __init sensors_f75375_init(void) 677 { 678 return i2c_add_driver(&f75375_driver); 679 } 680 681 static void __exit sensors_f75375_exit(void) 682 { 683 i2c_del_driver(&f75375_driver); 684 } 685 686 MODULE_AUTHOR("Riku Voipio <riku.voipio@movial.fi>"); 687 MODULE_LICENSE("GPL"); 688 MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver"); 689 690 module_init(sensors_f75375_init); 691 module_exit(sensors_f75375_exit); 692