1 /* 2 gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware 3 monitoring 4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>, 5 Kyösti Mälkki <kmalkki@cc.hut.fi> 6 Copyright (c) 2005 Maarten Deprez <maartendeprez@users.sourceforge.net> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 22 */ 23 24 #include <linux/module.h> 25 #include <linux/init.h> 26 #include <linux/slab.h> 27 #include <linux/jiffies.h> 28 #include <linux/i2c.h> 29 #include <linux/hwmon.h> 30 #include <linux/hwmon-sysfs.h> 31 #include <linux/hwmon-vid.h> 32 #include <linux/err.h> 33 #include <linux/mutex.h> 34 #include <linux/sysfs.h> 35 36 /* Type of the extra sensor */ 37 static unsigned short extra_sensor_type; 38 module_param(extra_sensor_type, ushort, 0); 39 MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)"); 40 41 /* Addresses to scan */ 42 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; 43 44 /* Insmod parameters */ 45 I2C_CLIENT_INSMOD_1(gl520sm); 46 47 /* Many GL520 constants specified below 48 One of the inputs can be configured as either temp or voltage. 49 That's why _TEMP2 and _IN4 access the same register 50 */ 51 52 /* The GL520 registers */ 53 #define GL520_REG_CHIP_ID 0x00 54 #define GL520_REG_REVISION 0x01 55 #define GL520_REG_CONF 0x03 56 #define GL520_REG_MASK 0x11 57 58 #define GL520_REG_VID_INPUT 0x02 59 60 static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; 61 static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; 62 static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; 63 static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; 64 65 static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; 66 static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; 67 static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; 68 69 #define GL520_REG_FAN_INPUT 0x07 70 #define GL520_REG_FAN_MIN 0x08 71 #define GL520_REG_FAN_DIV 0x0f 72 #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV 73 74 #define GL520_REG_ALARMS 0x12 75 #define GL520_REG_BEEP_MASK 0x10 76 #define GL520_REG_BEEP_ENABLE GL520_REG_CONF 77 78 /* 79 * Function declarations 80 */ 81 82 static int gl520_probe(struct i2c_client *client, 83 const struct i2c_device_id *id); 84 static int gl520_detect(struct i2c_client *client, int kind, 85 struct i2c_board_info *info); 86 static void gl520_init_client(struct i2c_client *client); 87 static int gl520_remove(struct i2c_client *client); 88 static int gl520_read_value(struct i2c_client *client, u8 reg); 89 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value); 90 static struct gl520_data *gl520_update_device(struct device *dev); 91 92 /* Driver data */ 93 static const struct i2c_device_id gl520_id[] = { 94 { "gl520sm", gl520sm }, 95 { } 96 }; 97 MODULE_DEVICE_TABLE(i2c, gl520_id); 98 99 static struct i2c_driver gl520_driver = { 100 .class = I2C_CLASS_HWMON, 101 .driver = { 102 .name = "gl520sm", 103 }, 104 .probe = gl520_probe, 105 .remove = gl520_remove, 106 .id_table = gl520_id, 107 .detect = gl520_detect, 108 .address_data = &addr_data, 109 }; 110 111 /* Client data */ 112 struct gl520_data { 113 struct device *hwmon_dev; 114 struct mutex update_lock; 115 char valid; /* zero until the following fields are valid */ 116 unsigned long last_updated; /* in jiffies */ 117 118 u8 vid; 119 u8 vrm; 120 u8 in_input[5]; /* [0] = VVD */ 121 u8 in_min[5]; /* [0] = VDD */ 122 u8 in_max[5]; /* [0] = VDD */ 123 u8 fan_input[2]; 124 u8 fan_min[2]; 125 u8 fan_div[2]; 126 u8 fan_off; 127 u8 temp_input[2]; 128 u8 temp_max[2]; 129 u8 temp_max_hyst[2]; 130 u8 alarms; 131 u8 beep_enable; 132 u8 beep_mask; 133 u8 alarm_mask; 134 u8 two_temps; 135 }; 136 137 /* 138 * Sysfs stuff 139 */ 140 141 static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr, 142 char *buf) 143 { 144 struct gl520_data *data = gl520_update_device(dev); 145 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); 146 } 147 static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL); 148 149 #define VDD_FROM_REG(val) (((val)*95+2)/4) 150 #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) 151 152 #define IN_FROM_REG(val) ((val)*19) 153 #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) 154 155 static ssize_t get_in_input(struct device *dev, struct device_attribute *attr, 156 char *buf) 157 { 158 int n = to_sensor_dev_attr(attr)->index; 159 struct gl520_data *data = gl520_update_device(dev); 160 u8 r = data->in_input[n]; 161 162 if (n == 0) 163 return sprintf(buf, "%d\n", VDD_FROM_REG(r)); 164 else 165 return sprintf(buf, "%d\n", IN_FROM_REG(r)); 166 } 167 168 static ssize_t get_in_min(struct device *dev, struct device_attribute *attr, 169 char *buf) 170 { 171 int n = to_sensor_dev_attr(attr)->index; 172 struct gl520_data *data = gl520_update_device(dev); 173 u8 r = data->in_min[n]; 174 175 if (n == 0) 176 return sprintf(buf, "%d\n", VDD_FROM_REG(r)); 177 else 178 return sprintf(buf, "%d\n", IN_FROM_REG(r)); 179 } 180 181 static ssize_t get_in_max(struct device *dev, struct device_attribute *attr, 182 char *buf) 183 { 184 int n = to_sensor_dev_attr(attr)->index; 185 struct gl520_data *data = gl520_update_device(dev); 186 u8 r = data->in_max[n]; 187 188 if (n == 0) 189 return sprintf(buf, "%d\n", VDD_FROM_REG(r)); 190 else 191 return sprintf(buf, "%d\n", IN_FROM_REG(r)); 192 } 193 194 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 195 const char *buf, size_t count) 196 { 197 struct i2c_client *client = to_i2c_client(dev); 198 struct gl520_data *data = i2c_get_clientdata(client); 199 int n = to_sensor_dev_attr(attr)->index; 200 long v = simple_strtol(buf, NULL, 10); 201 u8 r; 202 203 mutex_lock(&data->update_lock); 204 205 if (n == 0) 206 r = VDD_TO_REG(v); 207 else 208 r = IN_TO_REG(v); 209 210 data->in_min[n] = r; 211 212 if (n < 4) 213 gl520_write_value(client, GL520_REG_IN_MIN[n], 214 (gl520_read_value(client, GL520_REG_IN_MIN[n]) 215 & ~0xff) | r); 216 else 217 gl520_write_value(client, GL520_REG_IN_MIN[n], r); 218 219 mutex_unlock(&data->update_lock); 220 return count; 221 } 222 223 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 224 const char *buf, size_t count) 225 { 226 struct i2c_client *client = to_i2c_client(dev); 227 struct gl520_data *data = i2c_get_clientdata(client); 228 int n = to_sensor_dev_attr(attr)->index; 229 long v = simple_strtol(buf, NULL, 10); 230 u8 r; 231 232 if (n == 0) 233 r = VDD_TO_REG(v); 234 else 235 r = IN_TO_REG(v); 236 237 mutex_lock(&data->update_lock); 238 239 data->in_max[n] = r; 240 241 if (n < 4) 242 gl520_write_value(client, GL520_REG_IN_MAX[n], 243 (gl520_read_value(client, GL520_REG_IN_MAX[n]) 244 & ~0xff00) | (r << 8)); 245 else 246 gl520_write_value(client, GL520_REG_IN_MAX[n], r); 247 248 mutex_unlock(&data->update_lock); 249 return count; 250 } 251 252 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0); 253 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1); 254 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2); 255 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3); 256 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4); 257 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR, 258 get_in_min, set_in_min, 0); 259 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, 260 get_in_min, set_in_min, 1); 261 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, 262 get_in_min, set_in_min, 2); 263 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR, 264 get_in_min, set_in_min, 3); 265 static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR, 266 get_in_min, set_in_min, 4); 267 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR, 268 get_in_max, set_in_max, 0); 269 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, 270 get_in_max, set_in_max, 1); 271 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, 272 get_in_max, set_in_max, 2); 273 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR, 274 get_in_max, set_in_max, 3); 275 static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR, 276 get_in_max, set_in_max, 4); 277 278 #define DIV_FROM_REG(val) (1 << (val)) 279 #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div)))) 280 #define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255)); 281 282 static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr, 283 char *buf) 284 { 285 int n = to_sensor_dev_attr(attr)->index; 286 struct gl520_data *data = gl520_update_device(dev); 287 288 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n], 289 data->fan_div[n])); 290 } 291 292 static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr, 293 char *buf) 294 { 295 int n = to_sensor_dev_attr(attr)->index; 296 struct gl520_data *data = gl520_update_device(dev); 297 298 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n], 299 data->fan_div[n])); 300 } 301 302 static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr, 303 char *buf) 304 { 305 int n = to_sensor_dev_attr(attr)->index; 306 struct gl520_data *data = gl520_update_device(dev); 307 308 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n])); 309 } 310 311 static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr, 312 char *buf) 313 { 314 struct gl520_data *data = gl520_update_device(dev); 315 return sprintf(buf, "%d\n", data->fan_off); 316 } 317 318 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 319 const char *buf, size_t count) 320 { 321 struct i2c_client *client = to_i2c_client(dev); 322 struct gl520_data *data = i2c_get_clientdata(client); 323 int n = to_sensor_dev_attr(attr)->index; 324 unsigned long v = simple_strtoul(buf, NULL, 10); 325 u8 r; 326 327 mutex_lock(&data->update_lock); 328 r = FAN_TO_REG(v, data->fan_div[n]); 329 data->fan_min[n] = r; 330 331 if (n == 0) 332 gl520_write_value(client, GL520_REG_FAN_MIN, 333 (gl520_read_value(client, GL520_REG_FAN_MIN) 334 & ~0xff00) | (r << 8)); 335 else 336 gl520_write_value(client, GL520_REG_FAN_MIN, 337 (gl520_read_value(client, GL520_REG_FAN_MIN) 338 & ~0xff) | r); 339 340 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); 341 if (data->fan_min[n] == 0) 342 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40; 343 else 344 data->alarm_mask |= (n == 0) ? 0x20 : 0x40; 345 data->beep_mask &= data->alarm_mask; 346 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); 347 348 mutex_unlock(&data->update_lock); 349 return count; 350 } 351 352 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 353 const char *buf, size_t count) 354 { 355 struct i2c_client *client = to_i2c_client(dev); 356 struct gl520_data *data = i2c_get_clientdata(client); 357 int n = to_sensor_dev_attr(attr)->index; 358 unsigned long v = simple_strtoul(buf, NULL, 10); 359 u8 r; 360 361 switch (v) { 362 case 1: r = 0; break; 363 case 2: r = 1; break; 364 case 4: r = 2; break; 365 case 8: r = 3; break; 366 default: 367 dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); 368 return -EINVAL; 369 } 370 371 mutex_lock(&data->update_lock); 372 data->fan_div[n] = r; 373 374 if (n == 0) 375 gl520_write_value(client, GL520_REG_FAN_DIV, 376 (gl520_read_value(client, GL520_REG_FAN_DIV) 377 & ~0xc0) | (r << 6)); 378 else 379 gl520_write_value(client, GL520_REG_FAN_DIV, 380 (gl520_read_value(client, GL520_REG_FAN_DIV) 381 & ~0x30) | (r << 4)); 382 383 mutex_unlock(&data->update_lock); 384 return count; 385 } 386 387 static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr, 388 const char *buf, size_t count) 389 { 390 struct i2c_client *client = to_i2c_client(dev); 391 struct gl520_data *data = i2c_get_clientdata(client); 392 u8 r = simple_strtoul(buf, NULL, 10)?1:0; 393 394 mutex_lock(&data->update_lock); 395 data->fan_off = r; 396 gl520_write_value(client, GL520_REG_FAN_OFF, 397 (gl520_read_value(client, GL520_REG_FAN_OFF) 398 & ~0x0c) | (r << 2)); 399 mutex_unlock(&data->update_lock); 400 return count; 401 } 402 403 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0); 404 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1); 405 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, 406 get_fan_min, set_fan_min, 0); 407 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR, 408 get_fan_min, set_fan_min, 1); 409 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, 410 get_fan_div, set_fan_div, 0); 411 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, 412 get_fan_div, set_fan_div, 1); 413 static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR, 414 get_fan_off, set_fan_off); 415 416 #define TEMP_FROM_REG(val) (((val) - 130) * 1000) 417 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255)) 418 419 static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr, 420 char *buf) 421 { 422 int n = to_sensor_dev_attr(attr)->index; 423 struct gl520_data *data = gl520_update_device(dev); 424 425 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n])); 426 } 427 428 static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr, 429 char *buf) 430 { 431 int n = to_sensor_dev_attr(attr)->index; 432 struct gl520_data *data = gl520_update_device(dev); 433 434 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n])); 435 } 436 437 static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute 438 *attr, char *buf) 439 { 440 int n = to_sensor_dev_attr(attr)->index; 441 struct gl520_data *data = gl520_update_device(dev); 442 443 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n])); 444 } 445 446 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 447 const char *buf, size_t count) 448 { 449 struct i2c_client *client = to_i2c_client(dev); 450 struct gl520_data *data = i2c_get_clientdata(client); 451 int n = to_sensor_dev_attr(attr)->index; 452 long v = simple_strtol(buf, NULL, 10); 453 454 mutex_lock(&data->update_lock); 455 data->temp_max[n] = TEMP_TO_REG(v); 456 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]); 457 mutex_unlock(&data->update_lock); 458 return count; 459 } 460 461 static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute 462 *attr, const char *buf, size_t count) 463 { 464 struct i2c_client *client = to_i2c_client(dev); 465 struct gl520_data *data = i2c_get_clientdata(client); 466 int n = to_sensor_dev_attr(attr)->index; 467 long v = simple_strtol(buf, NULL, 10); 468 469 mutex_lock(&data->update_lock); 470 data->temp_max_hyst[n] = TEMP_TO_REG(v); 471 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n], 472 data->temp_max_hyst[n]); 473 mutex_unlock(&data->update_lock); 474 return count; 475 } 476 477 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0); 478 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1); 479 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, 480 get_temp_max, set_temp_max, 0); 481 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR, 482 get_temp_max, set_temp_max, 1); 483 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, 484 get_temp_max_hyst, set_temp_max_hyst, 0); 485 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, 486 get_temp_max_hyst, set_temp_max_hyst, 1); 487 488 static ssize_t get_alarms(struct device *dev, struct device_attribute *attr, 489 char *buf) 490 { 491 struct gl520_data *data = gl520_update_device(dev); 492 return sprintf(buf, "%d\n", data->alarms); 493 } 494 495 static ssize_t get_beep_enable(struct device *dev, struct device_attribute 496 *attr, char *buf) 497 { 498 struct gl520_data *data = gl520_update_device(dev); 499 return sprintf(buf, "%d\n", data->beep_enable); 500 } 501 502 static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr, 503 char *buf) 504 { 505 struct gl520_data *data = gl520_update_device(dev); 506 return sprintf(buf, "%d\n", data->beep_mask); 507 } 508 509 static ssize_t set_beep_enable(struct device *dev, struct device_attribute 510 *attr, const char *buf, size_t count) 511 { 512 struct i2c_client *client = to_i2c_client(dev); 513 struct gl520_data *data = i2c_get_clientdata(client); 514 u8 r = simple_strtoul(buf, NULL, 10)?0:1; 515 516 mutex_lock(&data->update_lock); 517 data->beep_enable = !r; 518 gl520_write_value(client, GL520_REG_BEEP_ENABLE, 519 (gl520_read_value(client, GL520_REG_BEEP_ENABLE) 520 & ~0x04) | (r << 2)); 521 mutex_unlock(&data->update_lock); 522 return count; 523 } 524 525 static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr, 526 const char *buf, size_t count) 527 { 528 struct i2c_client *client = to_i2c_client(dev); 529 struct gl520_data *data = i2c_get_clientdata(client); 530 u8 r = simple_strtoul(buf, NULL, 10); 531 532 mutex_lock(&data->update_lock); 533 r &= data->alarm_mask; 534 data->beep_mask = r; 535 gl520_write_value(client, GL520_REG_BEEP_MASK, r); 536 mutex_unlock(&data->update_lock); 537 return count; 538 } 539 540 static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL); 541 static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR, 542 get_beep_enable, set_beep_enable); 543 static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR, 544 get_beep_mask, set_beep_mask); 545 546 static ssize_t get_alarm(struct device *dev, struct device_attribute *attr, 547 char *buf) 548 { 549 int bit_nr = to_sensor_dev_attr(attr)->index; 550 struct gl520_data *data = gl520_update_device(dev); 551 552 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1); 553 } 554 555 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0); 556 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1); 557 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2); 558 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3); 559 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4); 560 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5); 561 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6); 562 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7); 563 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7); 564 565 static ssize_t get_beep(struct device *dev, struct device_attribute *attr, 566 char *buf) 567 { 568 int bitnr = to_sensor_dev_attr(attr)->index; 569 struct gl520_data *data = gl520_update_device(dev); 570 571 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1); 572 } 573 574 static ssize_t set_beep(struct device *dev, struct device_attribute *attr, 575 const char *buf, size_t count) 576 { 577 struct i2c_client *client = to_i2c_client(dev); 578 struct gl520_data *data = i2c_get_clientdata(client); 579 int bitnr = to_sensor_dev_attr(attr)->index; 580 unsigned long bit; 581 582 bit = simple_strtoul(buf, NULL, 10); 583 if (bit & ~1) 584 return -EINVAL; 585 586 mutex_lock(&data->update_lock); 587 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); 588 if (bit) 589 data->beep_mask |= (1 << bitnr); 590 else 591 data->beep_mask &= ~(1 << bitnr); 592 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); 593 mutex_unlock(&data->update_lock); 594 return count; 595 } 596 597 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0); 598 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1); 599 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2); 600 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3); 601 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4); 602 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5); 603 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6); 604 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); 605 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); 606 607 static struct attribute *gl520_attributes[] = { 608 &dev_attr_cpu0_vid.attr, 609 610 &sensor_dev_attr_in0_input.dev_attr.attr, 611 &sensor_dev_attr_in0_min.dev_attr.attr, 612 &sensor_dev_attr_in0_max.dev_attr.attr, 613 &sensor_dev_attr_in0_alarm.dev_attr.attr, 614 &sensor_dev_attr_in0_beep.dev_attr.attr, 615 &sensor_dev_attr_in1_input.dev_attr.attr, 616 &sensor_dev_attr_in1_min.dev_attr.attr, 617 &sensor_dev_attr_in1_max.dev_attr.attr, 618 &sensor_dev_attr_in1_alarm.dev_attr.attr, 619 &sensor_dev_attr_in1_beep.dev_attr.attr, 620 &sensor_dev_attr_in2_input.dev_attr.attr, 621 &sensor_dev_attr_in2_min.dev_attr.attr, 622 &sensor_dev_attr_in2_max.dev_attr.attr, 623 &sensor_dev_attr_in2_alarm.dev_attr.attr, 624 &sensor_dev_attr_in2_beep.dev_attr.attr, 625 &sensor_dev_attr_in3_input.dev_attr.attr, 626 &sensor_dev_attr_in3_min.dev_attr.attr, 627 &sensor_dev_attr_in3_max.dev_attr.attr, 628 &sensor_dev_attr_in3_alarm.dev_attr.attr, 629 &sensor_dev_attr_in3_beep.dev_attr.attr, 630 631 &sensor_dev_attr_fan1_input.dev_attr.attr, 632 &sensor_dev_attr_fan1_min.dev_attr.attr, 633 &sensor_dev_attr_fan1_div.dev_attr.attr, 634 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 635 &sensor_dev_attr_fan1_beep.dev_attr.attr, 636 &dev_attr_fan1_off.attr, 637 &sensor_dev_attr_fan2_input.dev_attr.attr, 638 &sensor_dev_attr_fan2_min.dev_attr.attr, 639 &sensor_dev_attr_fan2_div.dev_attr.attr, 640 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 641 &sensor_dev_attr_fan2_beep.dev_attr.attr, 642 643 &sensor_dev_attr_temp1_input.dev_attr.attr, 644 &sensor_dev_attr_temp1_max.dev_attr.attr, 645 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, 646 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 647 &sensor_dev_attr_temp1_beep.dev_attr.attr, 648 649 &dev_attr_alarms.attr, 650 &dev_attr_beep_enable.attr, 651 &dev_attr_beep_mask.attr, 652 NULL 653 }; 654 655 static const struct attribute_group gl520_group = { 656 .attrs = gl520_attributes, 657 }; 658 659 static struct attribute *gl520_attributes_opt[] = { 660 &sensor_dev_attr_in4_input.dev_attr.attr, 661 &sensor_dev_attr_in4_min.dev_attr.attr, 662 &sensor_dev_attr_in4_max.dev_attr.attr, 663 &sensor_dev_attr_in4_alarm.dev_attr.attr, 664 &sensor_dev_attr_in4_beep.dev_attr.attr, 665 666 &sensor_dev_attr_temp2_input.dev_attr.attr, 667 &sensor_dev_attr_temp2_max.dev_attr.attr, 668 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, 669 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 670 &sensor_dev_attr_temp2_beep.dev_attr.attr, 671 NULL 672 }; 673 674 static const struct attribute_group gl520_group_opt = { 675 .attrs = gl520_attributes_opt, 676 }; 677 678 679 /* 680 * Real code 681 */ 682 683 /* Return 0 if detection is successful, -ENODEV otherwise */ 684 static int gl520_detect(struct i2c_client *client, int kind, 685 struct i2c_board_info *info) 686 { 687 struct i2c_adapter *adapter = client->adapter; 688 689 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | 690 I2C_FUNC_SMBUS_WORD_DATA)) 691 return -ENODEV; 692 693 /* Determine the chip type. */ 694 if (kind < 0) { 695 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || 696 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || 697 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { 698 dev_dbg(&client->dev, "Unknown chip type, skipping\n"); 699 return -ENODEV; 700 } 701 } 702 703 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE); 704 705 return 0; 706 } 707 708 static int gl520_probe(struct i2c_client *client, 709 const struct i2c_device_id *id) 710 { 711 struct gl520_data *data; 712 int err; 713 714 data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL); 715 if (!data) { 716 err = -ENOMEM; 717 goto exit; 718 } 719 720 i2c_set_clientdata(client, data); 721 mutex_init(&data->update_lock); 722 723 /* Initialize the GL520SM chip */ 724 gl520_init_client(client); 725 726 /* Register sysfs hooks */ 727 if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group))) 728 goto exit_free; 729 730 if (data->two_temps) { 731 if ((err = device_create_file(&client->dev, 732 &sensor_dev_attr_temp2_input.dev_attr)) 733 || (err = device_create_file(&client->dev, 734 &sensor_dev_attr_temp2_max.dev_attr)) 735 || (err = device_create_file(&client->dev, 736 &sensor_dev_attr_temp2_max_hyst.dev_attr)) 737 || (err = device_create_file(&client->dev, 738 &sensor_dev_attr_temp2_alarm.dev_attr)) 739 || (err = device_create_file(&client->dev, 740 &sensor_dev_attr_temp2_beep.dev_attr))) 741 goto exit_remove_files; 742 } else { 743 if ((err = device_create_file(&client->dev, 744 &sensor_dev_attr_in4_input.dev_attr)) 745 || (err = device_create_file(&client->dev, 746 &sensor_dev_attr_in4_min.dev_attr)) 747 || (err = device_create_file(&client->dev, 748 &sensor_dev_attr_in4_max.dev_attr)) 749 || (err = device_create_file(&client->dev, 750 &sensor_dev_attr_in4_alarm.dev_attr)) 751 || (err = device_create_file(&client->dev, 752 &sensor_dev_attr_in4_beep.dev_attr))) 753 goto exit_remove_files; 754 } 755 756 757 data->hwmon_dev = hwmon_device_register(&client->dev); 758 if (IS_ERR(data->hwmon_dev)) { 759 err = PTR_ERR(data->hwmon_dev); 760 goto exit_remove_files; 761 } 762 763 return 0; 764 765 exit_remove_files: 766 sysfs_remove_group(&client->dev.kobj, &gl520_group); 767 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt); 768 exit_free: 769 kfree(data); 770 exit: 771 return err; 772 } 773 774 775 /* Called when we have found a new GL520SM. */ 776 static void gl520_init_client(struct i2c_client *client) 777 { 778 struct gl520_data *data = i2c_get_clientdata(client); 779 u8 oldconf, conf; 780 781 conf = oldconf = gl520_read_value(client, GL520_REG_CONF); 782 783 data->alarm_mask = 0xff; 784 data->vrm = vid_which_vrm(); 785 786 if (extra_sensor_type == 1) 787 conf &= ~0x10; 788 else if (extra_sensor_type == 2) 789 conf |= 0x10; 790 data->two_temps = !(conf & 0x10); 791 792 /* If IRQ# is disabled, we can safely force comparator mode */ 793 if (!(conf & 0x20)) 794 conf &= 0xf7; 795 796 /* Enable monitoring if needed */ 797 conf |= 0x40; 798 799 if (conf != oldconf) 800 gl520_write_value(client, GL520_REG_CONF, conf); 801 802 gl520_update_device(&(client->dev)); 803 804 if (data->fan_min[0] == 0) 805 data->alarm_mask &= ~0x20; 806 if (data->fan_min[1] == 0) 807 data->alarm_mask &= ~0x40; 808 809 data->beep_mask &= data->alarm_mask; 810 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); 811 } 812 813 static int gl520_remove(struct i2c_client *client) 814 { 815 struct gl520_data *data = i2c_get_clientdata(client); 816 817 hwmon_device_unregister(data->hwmon_dev); 818 sysfs_remove_group(&client->dev.kobj, &gl520_group); 819 sysfs_remove_group(&client->dev.kobj, &gl520_group_opt); 820 821 kfree(data); 822 return 0; 823 } 824 825 826 /* Registers 0x07 to 0x0c are word-sized, others are byte-sized 827 GL520 uses a high-byte first convention */ 828 static int gl520_read_value(struct i2c_client *client, u8 reg) 829 { 830 if ((reg >= 0x07) && (reg <= 0x0c)) 831 return swab16(i2c_smbus_read_word_data(client, reg)); 832 else 833 return i2c_smbus_read_byte_data(client, reg); 834 } 835 836 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) 837 { 838 if ((reg >= 0x07) && (reg <= 0x0c)) 839 return i2c_smbus_write_word_data(client, reg, swab16(value)); 840 else 841 return i2c_smbus_write_byte_data(client, reg, value); 842 } 843 844 845 static struct gl520_data *gl520_update_device(struct device *dev) 846 { 847 struct i2c_client *client = to_i2c_client(dev); 848 struct gl520_data *data = i2c_get_clientdata(client); 849 int val, i; 850 851 mutex_lock(&data->update_lock); 852 853 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { 854 855 dev_dbg(&client->dev, "Starting gl520sm update\n"); 856 857 data->alarms = gl520_read_value(client, GL520_REG_ALARMS); 858 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); 859 data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f; 860 861 for (i = 0; i < 4; i++) { 862 data->in_input[i] = gl520_read_value(client, 863 GL520_REG_IN_INPUT[i]); 864 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); 865 data->in_min[i] = val & 0xff; 866 data->in_max[i] = (val >> 8) & 0xff; 867 } 868 869 val = gl520_read_value(client, GL520_REG_FAN_INPUT); 870 data->fan_input[0] = (val >> 8) & 0xff; 871 data->fan_input[1] = val & 0xff; 872 873 val = gl520_read_value(client, GL520_REG_FAN_MIN); 874 data->fan_min[0] = (val >> 8) & 0xff; 875 data->fan_min[1] = val & 0xff; 876 877 data->temp_input[0] = gl520_read_value(client, 878 GL520_REG_TEMP_INPUT[0]); 879 data->temp_max[0] = gl520_read_value(client, 880 GL520_REG_TEMP_MAX[0]); 881 data->temp_max_hyst[0] = gl520_read_value(client, 882 GL520_REG_TEMP_MAX_HYST[0]); 883 884 val = gl520_read_value(client, GL520_REG_FAN_DIV); 885 data->fan_div[0] = (val >> 6) & 0x03; 886 data->fan_div[1] = (val >> 4) & 0x03; 887 data->fan_off = (val >> 2) & 0x01; 888 889 data->alarms &= data->alarm_mask; 890 891 val = gl520_read_value(client, GL520_REG_CONF); 892 data->beep_enable = !((val >> 2) & 1); 893 894 /* Temp1 and Vin4 are the same input */ 895 if (data->two_temps) { 896 data->temp_input[1] = gl520_read_value(client, 897 GL520_REG_TEMP_INPUT[1]); 898 data->temp_max[1] = gl520_read_value(client, 899 GL520_REG_TEMP_MAX[1]); 900 data->temp_max_hyst[1] = gl520_read_value(client, 901 GL520_REG_TEMP_MAX_HYST[1]); 902 } else { 903 data->in_input[4] = gl520_read_value(client, 904 GL520_REG_IN_INPUT[4]); 905 data->in_min[4] = gl520_read_value(client, 906 GL520_REG_IN_MIN[4]); 907 data->in_max[4] = gl520_read_value(client, 908 GL520_REG_IN_MAX[4]); 909 } 910 911 data->last_updated = jiffies; 912 data->valid = 1; 913 } 914 915 mutex_unlock(&data->update_lock); 916 917 return data; 918 } 919 920 921 static int __init sensors_gl520sm_init(void) 922 { 923 return i2c_add_driver(&gl520_driver); 924 } 925 926 static void __exit sensors_gl520sm_exit(void) 927 { 928 i2c_del_driver(&gl520_driver); 929 } 930 931 932 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " 933 "Kyösti Mälkki <kmalkki@cc.hut.fi>, " 934 "Maarten Deprez <maartendeprez@users.sourceforge.net>"); 935 MODULE_DESCRIPTION("GL520SM driver"); 936 MODULE_LICENSE("GPL"); 937 938 module_init(sensors_gl520sm_init); 939 module_exit(sensors_gl520sm_exit); 940