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 /* 45 * Many GL520 constants specified below 46 * One of the inputs can be configured as either temp or voltage. 47 * That's why _TEMP2 and _IN4 access the same register 48 */ 49 50 /* The GL520 registers */ 51 #define GL520_REG_CHIP_ID 0x00 52 #define GL520_REG_REVISION 0x01 53 #define GL520_REG_CONF 0x03 54 #define GL520_REG_MASK 0x11 55 56 #define GL520_REG_VID_INPUT 0x02 57 58 static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; 59 static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; 60 static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; 61 static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; 62 63 static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; 64 static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; 65 static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; 66 67 #define GL520_REG_FAN_INPUT 0x07 68 #define GL520_REG_FAN_MIN 0x08 69 #define GL520_REG_FAN_DIV 0x0f 70 #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV 71 72 #define GL520_REG_ALARMS 0x12 73 #define GL520_REG_BEEP_MASK 0x10 74 #define GL520_REG_BEEP_ENABLE GL520_REG_CONF 75 76 /* Client data */ 77 struct gl520_data { 78 struct i2c_client *client; 79 const struct attribute_group *groups[3]; 80 struct mutex update_lock; 81 char valid; /* zero until the following fields are valid */ 82 unsigned long last_updated; /* in jiffies */ 83 84 u8 vid; 85 u8 vrm; 86 u8 in_input[5]; /* [0] = VVD */ 87 u8 in_min[5]; /* [0] = VDD */ 88 u8 in_max[5]; /* [0] = VDD */ 89 u8 fan_input[2]; 90 u8 fan_min[2]; 91 u8 fan_div[2]; 92 u8 fan_off; 93 u8 temp_input[2]; 94 u8 temp_max[2]; 95 u8 temp_max_hyst[2]; 96 u8 alarms; 97 u8 beep_enable; 98 u8 beep_mask; 99 u8 alarm_mask; 100 u8 two_temps; 101 }; 102 103 /* 104 * Registers 0x07 to 0x0c are word-sized, others are byte-sized 105 * GL520 uses a high-byte first convention 106 */ 107 static int gl520_read_value(struct i2c_client *client, u8 reg) 108 { 109 if ((reg >= 0x07) && (reg <= 0x0c)) 110 return i2c_smbus_read_word_swapped(client, reg); 111 else 112 return i2c_smbus_read_byte_data(client, reg); 113 } 114 115 static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) 116 { 117 if ((reg >= 0x07) && (reg <= 0x0c)) 118 return i2c_smbus_write_word_swapped(client, reg, value); 119 else 120 return i2c_smbus_write_byte_data(client, reg, value); 121 } 122 123 static struct gl520_data *gl520_update_device(struct device *dev) 124 { 125 struct gl520_data *data = dev_get_drvdata(dev); 126 struct i2c_client *client = data->client; 127 int val, i; 128 129 mutex_lock(&data->update_lock); 130 131 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { 132 133 dev_dbg(&client->dev, "Starting gl520sm update\n"); 134 135 data->alarms = gl520_read_value(client, GL520_REG_ALARMS); 136 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); 137 data->vid = gl520_read_value(client, 138 GL520_REG_VID_INPUT) & 0x1f; 139 140 for (i = 0; i < 4; i++) { 141 data->in_input[i] = gl520_read_value(client, 142 GL520_REG_IN_INPUT[i]); 143 val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); 144 data->in_min[i] = val & 0xff; 145 data->in_max[i] = (val >> 8) & 0xff; 146 } 147 148 val = gl520_read_value(client, GL520_REG_FAN_INPUT); 149 data->fan_input[0] = (val >> 8) & 0xff; 150 data->fan_input[1] = val & 0xff; 151 152 val = gl520_read_value(client, GL520_REG_FAN_MIN); 153 data->fan_min[0] = (val >> 8) & 0xff; 154 data->fan_min[1] = val & 0xff; 155 156 data->temp_input[0] = gl520_read_value(client, 157 GL520_REG_TEMP_INPUT[0]); 158 data->temp_max[0] = gl520_read_value(client, 159 GL520_REG_TEMP_MAX[0]); 160 data->temp_max_hyst[0] = gl520_read_value(client, 161 GL520_REG_TEMP_MAX_HYST[0]); 162 163 val = gl520_read_value(client, GL520_REG_FAN_DIV); 164 data->fan_div[0] = (val >> 6) & 0x03; 165 data->fan_div[1] = (val >> 4) & 0x03; 166 data->fan_off = (val >> 2) & 0x01; 167 168 data->alarms &= data->alarm_mask; 169 170 val = gl520_read_value(client, GL520_REG_CONF); 171 data->beep_enable = !((val >> 2) & 1); 172 173 /* Temp1 and Vin4 are the same input */ 174 if (data->two_temps) { 175 data->temp_input[1] = gl520_read_value(client, 176 GL520_REG_TEMP_INPUT[1]); 177 data->temp_max[1] = gl520_read_value(client, 178 GL520_REG_TEMP_MAX[1]); 179 data->temp_max_hyst[1] = gl520_read_value(client, 180 GL520_REG_TEMP_MAX_HYST[1]); 181 } else { 182 data->in_input[4] = gl520_read_value(client, 183 GL520_REG_IN_INPUT[4]); 184 data->in_min[4] = gl520_read_value(client, 185 GL520_REG_IN_MIN[4]); 186 data->in_max[4] = gl520_read_value(client, 187 GL520_REG_IN_MAX[4]); 188 } 189 190 data->last_updated = jiffies; 191 data->valid = 1; 192 } 193 194 mutex_unlock(&data->update_lock); 195 196 return data; 197 } 198 199 /* 200 * Sysfs stuff 201 */ 202 203 static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr, 204 char *buf) 205 { 206 struct gl520_data *data = gl520_update_device(dev); 207 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); 208 } 209 static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL); 210 211 #define VDD_FROM_REG(val) (((val) * 95 + 2) / 4) 212 #define VDD_TO_REG(val) clamp_val((((val) * 4 + 47) / 95), 0, 255) 213 214 #define IN_FROM_REG(val) ((val) * 19) 215 #define IN_TO_REG(val) clamp_val((((val) + 9) / 19), 0, 255) 216 217 static ssize_t get_in_input(struct device *dev, struct device_attribute *attr, 218 char *buf) 219 { 220 int n = to_sensor_dev_attr(attr)->index; 221 struct gl520_data *data = gl520_update_device(dev); 222 u8 r = data->in_input[n]; 223 224 if (n == 0) 225 return sprintf(buf, "%d\n", VDD_FROM_REG(r)); 226 else 227 return sprintf(buf, "%d\n", IN_FROM_REG(r)); 228 } 229 230 static ssize_t get_in_min(struct device *dev, struct device_attribute *attr, 231 char *buf) 232 { 233 int n = to_sensor_dev_attr(attr)->index; 234 struct gl520_data *data = gl520_update_device(dev); 235 u8 r = data->in_min[n]; 236 237 if (n == 0) 238 return sprintf(buf, "%d\n", VDD_FROM_REG(r)); 239 else 240 return sprintf(buf, "%d\n", IN_FROM_REG(r)); 241 } 242 243 static ssize_t get_in_max(struct device *dev, struct device_attribute *attr, 244 char *buf) 245 { 246 int n = to_sensor_dev_attr(attr)->index; 247 struct gl520_data *data = gl520_update_device(dev); 248 u8 r = data->in_max[n]; 249 250 if (n == 0) 251 return sprintf(buf, "%d\n", VDD_FROM_REG(r)); 252 else 253 return sprintf(buf, "%d\n", IN_FROM_REG(r)); 254 } 255 256 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 257 const char *buf, size_t count) 258 { 259 struct gl520_data *data = dev_get_drvdata(dev); 260 struct i2c_client *client = data->client; 261 int n = to_sensor_dev_attr(attr)->index; 262 u8 r; 263 long v; 264 int err; 265 266 err = kstrtol(buf, 10, &v); 267 if (err) 268 return err; 269 270 mutex_lock(&data->update_lock); 271 272 if (n == 0) 273 r = VDD_TO_REG(v); 274 else 275 r = IN_TO_REG(v); 276 277 data->in_min[n] = r; 278 279 if (n < 4) 280 gl520_write_value(client, GL520_REG_IN_MIN[n], 281 (gl520_read_value(client, GL520_REG_IN_MIN[n]) 282 & ~0xff) | r); 283 else 284 gl520_write_value(client, GL520_REG_IN_MIN[n], r); 285 286 mutex_unlock(&data->update_lock); 287 return count; 288 } 289 290 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 291 const char *buf, size_t count) 292 { 293 struct gl520_data *data = dev_get_drvdata(dev); 294 struct i2c_client *client = data->client; 295 int n = to_sensor_dev_attr(attr)->index; 296 u8 r; 297 long v; 298 int err; 299 300 err = kstrtol(buf, 10, &v); 301 if (err) 302 return err; 303 304 if (n == 0) 305 r = VDD_TO_REG(v); 306 else 307 r = IN_TO_REG(v); 308 309 mutex_lock(&data->update_lock); 310 311 data->in_max[n] = r; 312 313 if (n < 4) 314 gl520_write_value(client, GL520_REG_IN_MAX[n], 315 (gl520_read_value(client, GL520_REG_IN_MAX[n]) 316 & ~0xff00) | (r << 8)); 317 else 318 gl520_write_value(client, GL520_REG_IN_MAX[n], r); 319 320 mutex_unlock(&data->update_lock); 321 return count; 322 } 323 324 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, get_in_input, NULL, 0); 325 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, get_in_input, NULL, 1); 326 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, get_in_input, NULL, 2); 327 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, get_in_input, NULL, 3); 328 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, get_in_input, NULL, 4); 329 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR, 330 get_in_min, set_in_min, 0); 331 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, 332 get_in_min, set_in_min, 1); 333 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, 334 get_in_min, set_in_min, 2); 335 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO | S_IWUSR, 336 get_in_min, set_in_min, 3); 337 static SENSOR_DEVICE_ATTR(in4_min, S_IRUGO | S_IWUSR, 338 get_in_min, set_in_min, 4); 339 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR, 340 get_in_max, set_in_max, 0); 341 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, 342 get_in_max, set_in_max, 1); 343 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, 344 get_in_max, set_in_max, 2); 345 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO | S_IWUSR, 346 get_in_max, set_in_max, 3); 347 static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR, 348 get_in_max, set_in_max, 4); 349 350 #define DIV_FROM_REG(val) (1 << (val)) 351 #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div)))) 352 #define FAN_TO_REG(val, div) ((val) <= 0 ? 0 : \ 353 clamp_val((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255)) 354 355 static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr, 356 char *buf) 357 { 358 int n = to_sensor_dev_attr(attr)->index; 359 struct gl520_data *data = gl520_update_device(dev); 360 361 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n], 362 data->fan_div[n])); 363 } 364 365 static ssize_t get_fan_min(struct device *dev, struct device_attribute *attr, 366 char *buf) 367 { 368 int n = to_sensor_dev_attr(attr)->index; 369 struct gl520_data *data = gl520_update_device(dev); 370 371 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n], 372 data->fan_div[n])); 373 } 374 375 static ssize_t get_fan_div(struct device *dev, struct device_attribute *attr, 376 char *buf) 377 { 378 int n = to_sensor_dev_attr(attr)->index; 379 struct gl520_data *data = gl520_update_device(dev); 380 381 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n])); 382 } 383 384 static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr, 385 char *buf) 386 { 387 struct gl520_data *data = gl520_update_device(dev); 388 return sprintf(buf, "%d\n", data->fan_off); 389 } 390 391 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 392 const char *buf, size_t count) 393 { 394 struct gl520_data *data = dev_get_drvdata(dev); 395 struct i2c_client *client = data->client; 396 int n = to_sensor_dev_attr(attr)->index; 397 u8 r; 398 unsigned long v; 399 int err; 400 401 err = kstrtoul(buf, 10, &v); 402 if (err) 403 return err; 404 405 mutex_lock(&data->update_lock); 406 r = FAN_TO_REG(v, data->fan_div[n]); 407 data->fan_min[n] = r; 408 409 if (n == 0) 410 gl520_write_value(client, GL520_REG_FAN_MIN, 411 (gl520_read_value(client, GL520_REG_FAN_MIN) 412 & ~0xff00) | (r << 8)); 413 else 414 gl520_write_value(client, GL520_REG_FAN_MIN, 415 (gl520_read_value(client, GL520_REG_FAN_MIN) 416 & ~0xff) | r); 417 418 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); 419 if (data->fan_min[n] == 0) 420 data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40; 421 else 422 data->alarm_mask |= (n == 0) ? 0x20 : 0x40; 423 data->beep_mask &= data->alarm_mask; 424 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); 425 426 mutex_unlock(&data->update_lock); 427 return count; 428 } 429 430 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 431 const char *buf, size_t count) 432 { 433 struct gl520_data *data = dev_get_drvdata(dev); 434 struct i2c_client *client = data->client; 435 int n = to_sensor_dev_attr(attr)->index; 436 u8 r; 437 unsigned long v; 438 int err; 439 440 err = kstrtoul(buf, 10, &v); 441 if (err) 442 return err; 443 444 switch (v) { 445 case 1: 446 r = 0; 447 break; 448 case 2: 449 r = 1; 450 break; 451 case 4: 452 r = 2; 453 break; 454 case 8: 455 r = 3; 456 break; 457 default: 458 dev_err(&client->dev, 459 "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); 460 return -EINVAL; 461 } 462 463 mutex_lock(&data->update_lock); 464 data->fan_div[n] = r; 465 466 if (n == 0) 467 gl520_write_value(client, GL520_REG_FAN_DIV, 468 (gl520_read_value(client, GL520_REG_FAN_DIV) 469 & ~0xc0) | (r << 6)); 470 else 471 gl520_write_value(client, GL520_REG_FAN_DIV, 472 (gl520_read_value(client, GL520_REG_FAN_DIV) 473 & ~0x30) | (r << 4)); 474 475 mutex_unlock(&data->update_lock); 476 return count; 477 } 478 479 static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr, 480 const char *buf, size_t count) 481 { 482 struct gl520_data *data = dev_get_drvdata(dev); 483 struct i2c_client *client = data->client; 484 u8 r; 485 unsigned long v; 486 int err; 487 488 err = kstrtoul(buf, 10, &v); 489 if (err) 490 return err; 491 492 r = (v ? 1 : 0); 493 494 mutex_lock(&data->update_lock); 495 data->fan_off = r; 496 gl520_write_value(client, GL520_REG_FAN_OFF, 497 (gl520_read_value(client, GL520_REG_FAN_OFF) 498 & ~0x0c) | (r << 2)); 499 mutex_unlock(&data->update_lock); 500 return count; 501 } 502 503 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan_input, NULL, 0); 504 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan_input, NULL, 1); 505 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, 506 get_fan_min, set_fan_min, 0); 507 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR, 508 get_fan_min, set_fan_min, 1); 509 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, 510 get_fan_div, set_fan_div, 0); 511 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, 512 get_fan_div, set_fan_div, 1); 513 static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR, 514 get_fan_off, set_fan_off); 515 516 #define TEMP_FROM_REG(val) (((val) - 130) * 1000) 517 #define TEMP_TO_REG(val) clamp_val(((((val) < 0 ? \ 518 (val) - 500 : (val) + 500) / 1000) + 130), 0, 255) 519 520 static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr, 521 char *buf) 522 { 523 int n = to_sensor_dev_attr(attr)->index; 524 struct gl520_data *data = gl520_update_device(dev); 525 526 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n])); 527 } 528 529 static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr, 530 char *buf) 531 { 532 int n = to_sensor_dev_attr(attr)->index; 533 struct gl520_data *data = gl520_update_device(dev); 534 535 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n])); 536 } 537 538 static ssize_t get_temp_max_hyst(struct device *dev, 539 struct device_attribute *attr, char *buf) 540 { 541 int n = to_sensor_dev_attr(attr)->index; 542 struct gl520_data *data = gl520_update_device(dev); 543 544 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n])); 545 } 546 547 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 548 const char *buf, size_t count) 549 { 550 struct gl520_data *data = dev_get_drvdata(dev); 551 struct i2c_client *client = data->client; 552 int n = to_sensor_dev_attr(attr)->index; 553 long v; 554 int err; 555 556 err = kstrtol(buf, 10, &v); 557 if (err) 558 return err; 559 560 mutex_lock(&data->update_lock); 561 data->temp_max[n] = TEMP_TO_REG(v); 562 gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]); 563 mutex_unlock(&data->update_lock); 564 return count; 565 } 566 567 static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute 568 *attr, const char *buf, size_t count) 569 { 570 struct gl520_data *data = dev_get_drvdata(dev); 571 struct i2c_client *client = data->client; 572 int n = to_sensor_dev_attr(attr)->index; 573 long v; 574 int err; 575 576 err = kstrtol(buf, 10, &v); 577 if (err) 578 return err; 579 580 mutex_lock(&data->update_lock); 581 data->temp_max_hyst[n] = TEMP_TO_REG(v); 582 gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n], 583 data->temp_max_hyst[n]); 584 mutex_unlock(&data->update_lock); 585 return count; 586 } 587 588 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_temp_input, NULL, 0); 589 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_temp_input, NULL, 1); 590 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, 591 get_temp_max, set_temp_max, 0); 592 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR, 593 get_temp_max, set_temp_max, 1); 594 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, 595 get_temp_max_hyst, set_temp_max_hyst, 0); 596 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, 597 get_temp_max_hyst, set_temp_max_hyst, 1); 598 599 static ssize_t get_alarms(struct device *dev, struct device_attribute *attr, 600 char *buf) 601 { 602 struct gl520_data *data = gl520_update_device(dev); 603 return sprintf(buf, "%d\n", data->alarms); 604 } 605 606 static ssize_t get_beep_enable(struct device *dev, struct device_attribute 607 *attr, char *buf) 608 { 609 struct gl520_data *data = gl520_update_device(dev); 610 return sprintf(buf, "%d\n", data->beep_enable); 611 } 612 613 static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr, 614 char *buf) 615 { 616 struct gl520_data *data = gl520_update_device(dev); 617 return sprintf(buf, "%d\n", data->beep_mask); 618 } 619 620 static ssize_t set_beep_enable(struct device *dev, struct device_attribute 621 *attr, const char *buf, size_t count) 622 { 623 struct gl520_data *data = dev_get_drvdata(dev); 624 struct i2c_client *client = data->client; 625 u8 r; 626 unsigned long v; 627 int err; 628 629 err = kstrtoul(buf, 10, &v); 630 if (err) 631 return err; 632 633 r = (v ? 0 : 1); 634 635 mutex_lock(&data->update_lock); 636 data->beep_enable = !r; 637 gl520_write_value(client, GL520_REG_BEEP_ENABLE, 638 (gl520_read_value(client, GL520_REG_BEEP_ENABLE) 639 & ~0x04) | (r << 2)); 640 mutex_unlock(&data->update_lock); 641 return count; 642 } 643 644 static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr, 645 const char *buf, size_t count) 646 { 647 struct gl520_data *data = dev_get_drvdata(dev); 648 struct i2c_client *client = data->client; 649 unsigned long r; 650 int err; 651 652 err = kstrtoul(buf, 10, &r); 653 if (err) 654 return err; 655 656 mutex_lock(&data->update_lock); 657 r &= data->alarm_mask; 658 data->beep_mask = r; 659 gl520_write_value(client, GL520_REG_BEEP_MASK, r); 660 mutex_unlock(&data->update_lock); 661 return count; 662 } 663 664 static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL); 665 static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR, 666 get_beep_enable, set_beep_enable); 667 static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR, 668 get_beep_mask, set_beep_mask); 669 670 static ssize_t get_alarm(struct device *dev, struct device_attribute *attr, 671 char *buf) 672 { 673 int bit_nr = to_sensor_dev_attr(attr)->index; 674 struct gl520_data *data = gl520_update_device(dev); 675 676 return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1); 677 } 678 679 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, get_alarm, NULL, 0); 680 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, get_alarm, NULL, 1); 681 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, get_alarm, NULL, 2); 682 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, get_alarm, NULL, 3); 683 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, get_alarm, NULL, 4); 684 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, get_alarm, NULL, 5); 685 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, get_alarm, NULL, 6); 686 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, get_alarm, NULL, 7); 687 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, get_alarm, NULL, 7); 688 689 static ssize_t get_beep(struct device *dev, struct device_attribute *attr, 690 char *buf) 691 { 692 int bitnr = to_sensor_dev_attr(attr)->index; 693 struct gl520_data *data = gl520_update_device(dev); 694 695 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1); 696 } 697 698 static ssize_t set_beep(struct device *dev, struct device_attribute *attr, 699 const char *buf, size_t count) 700 { 701 struct gl520_data *data = dev_get_drvdata(dev); 702 struct i2c_client *client = data->client; 703 int bitnr = to_sensor_dev_attr(attr)->index; 704 unsigned long bit; 705 706 int err; 707 708 err = kstrtoul(buf, 10, &bit); 709 if (err) 710 return err; 711 if (bit & ~1) 712 return -EINVAL; 713 714 mutex_lock(&data->update_lock); 715 data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); 716 if (bit) 717 data->beep_mask |= (1 << bitnr); 718 else 719 data->beep_mask &= ~(1 << bitnr); 720 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); 721 mutex_unlock(&data->update_lock); 722 return count; 723 } 724 725 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 0); 726 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 1); 727 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 2); 728 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 3); 729 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 4); 730 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 5); 731 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 6); 732 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); 733 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, get_beep, set_beep, 7); 734 735 static struct attribute *gl520_attributes[] = { 736 &dev_attr_cpu0_vid.attr, 737 738 &sensor_dev_attr_in0_input.dev_attr.attr, 739 &sensor_dev_attr_in0_min.dev_attr.attr, 740 &sensor_dev_attr_in0_max.dev_attr.attr, 741 &sensor_dev_attr_in0_alarm.dev_attr.attr, 742 &sensor_dev_attr_in0_beep.dev_attr.attr, 743 &sensor_dev_attr_in1_input.dev_attr.attr, 744 &sensor_dev_attr_in1_min.dev_attr.attr, 745 &sensor_dev_attr_in1_max.dev_attr.attr, 746 &sensor_dev_attr_in1_alarm.dev_attr.attr, 747 &sensor_dev_attr_in1_beep.dev_attr.attr, 748 &sensor_dev_attr_in2_input.dev_attr.attr, 749 &sensor_dev_attr_in2_min.dev_attr.attr, 750 &sensor_dev_attr_in2_max.dev_attr.attr, 751 &sensor_dev_attr_in2_alarm.dev_attr.attr, 752 &sensor_dev_attr_in2_beep.dev_attr.attr, 753 &sensor_dev_attr_in3_input.dev_attr.attr, 754 &sensor_dev_attr_in3_min.dev_attr.attr, 755 &sensor_dev_attr_in3_max.dev_attr.attr, 756 &sensor_dev_attr_in3_alarm.dev_attr.attr, 757 &sensor_dev_attr_in3_beep.dev_attr.attr, 758 759 &sensor_dev_attr_fan1_input.dev_attr.attr, 760 &sensor_dev_attr_fan1_min.dev_attr.attr, 761 &sensor_dev_attr_fan1_div.dev_attr.attr, 762 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 763 &sensor_dev_attr_fan1_beep.dev_attr.attr, 764 &dev_attr_fan1_off.attr, 765 &sensor_dev_attr_fan2_input.dev_attr.attr, 766 &sensor_dev_attr_fan2_min.dev_attr.attr, 767 &sensor_dev_attr_fan2_div.dev_attr.attr, 768 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 769 &sensor_dev_attr_fan2_beep.dev_attr.attr, 770 771 &sensor_dev_attr_temp1_input.dev_attr.attr, 772 &sensor_dev_attr_temp1_max.dev_attr.attr, 773 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, 774 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 775 &sensor_dev_attr_temp1_beep.dev_attr.attr, 776 777 &dev_attr_alarms.attr, 778 &dev_attr_beep_enable.attr, 779 &dev_attr_beep_mask.attr, 780 NULL 781 }; 782 783 static const struct attribute_group gl520_group = { 784 .attrs = gl520_attributes, 785 }; 786 787 static struct attribute *gl520_attributes_in4[] = { 788 &sensor_dev_attr_in4_input.dev_attr.attr, 789 &sensor_dev_attr_in4_min.dev_attr.attr, 790 &sensor_dev_attr_in4_max.dev_attr.attr, 791 &sensor_dev_attr_in4_alarm.dev_attr.attr, 792 &sensor_dev_attr_in4_beep.dev_attr.attr, 793 NULL 794 }; 795 796 static struct attribute *gl520_attributes_temp2[] = { 797 &sensor_dev_attr_temp2_input.dev_attr.attr, 798 &sensor_dev_attr_temp2_max.dev_attr.attr, 799 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, 800 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 801 &sensor_dev_attr_temp2_beep.dev_attr.attr, 802 NULL 803 }; 804 805 static const struct attribute_group gl520_group_in4 = { 806 .attrs = gl520_attributes_in4, 807 }; 808 809 static const struct attribute_group gl520_group_temp2 = { 810 .attrs = gl520_attributes_temp2, 811 }; 812 813 814 /* 815 * Real code 816 */ 817 818 /* Return 0 if detection is successful, -ENODEV otherwise */ 819 static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info) 820 { 821 struct i2c_adapter *adapter = client->adapter; 822 823 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | 824 I2C_FUNC_SMBUS_WORD_DATA)) 825 return -ENODEV; 826 827 /* Determine the chip type. */ 828 if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || 829 ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || 830 ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { 831 dev_dbg(&client->dev, "Unknown chip type, skipping\n"); 832 return -ENODEV; 833 } 834 835 strlcpy(info->type, "gl520sm", I2C_NAME_SIZE); 836 837 return 0; 838 } 839 840 /* Called when we have found a new GL520SM. */ 841 static void gl520_init_client(struct i2c_client *client) 842 { 843 struct gl520_data *data = i2c_get_clientdata(client); 844 u8 oldconf, conf; 845 846 conf = oldconf = gl520_read_value(client, GL520_REG_CONF); 847 848 data->alarm_mask = 0xff; 849 data->vrm = vid_which_vrm(); 850 851 if (extra_sensor_type == 1) 852 conf &= ~0x10; 853 else if (extra_sensor_type == 2) 854 conf |= 0x10; 855 data->two_temps = !(conf & 0x10); 856 857 /* If IRQ# is disabled, we can safely force comparator mode */ 858 if (!(conf & 0x20)) 859 conf &= 0xf7; 860 861 /* Enable monitoring if needed */ 862 conf |= 0x40; 863 864 if (conf != oldconf) 865 gl520_write_value(client, GL520_REG_CONF, conf); 866 867 gl520_update_device(&(client->dev)); 868 869 if (data->fan_min[0] == 0) 870 data->alarm_mask &= ~0x20; 871 if (data->fan_min[1] == 0) 872 data->alarm_mask &= ~0x40; 873 874 data->beep_mask &= data->alarm_mask; 875 gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); 876 } 877 878 static int gl520_probe(struct i2c_client *client, 879 const struct i2c_device_id *id) 880 { 881 struct device *dev = &client->dev; 882 struct device *hwmon_dev; 883 struct gl520_data *data; 884 885 data = devm_kzalloc(dev, sizeof(struct gl520_data), GFP_KERNEL); 886 if (!data) 887 return -ENOMEM; 888 889 i2c_set_clientdata(client, data); 890 mutex_init(&data->update_lock); 891 data->client = client; 892 893 /* Initialize the GL520SM chip */ 894 gl520_init_client(client); 895 896 /* sysfs hooks */ 897 data->groups[0] = &gl520_group; 898 899 if (data->two_temps) 900 data->groups[1] = &gl520_group_temp2; 901 else 902 data->groups[1] = &gl520_group_in4; 903 904 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, 905 data, data->groups); 906 return PTR_ERR_OR_ZERO(hwmon_dev); 907 } 908 909 static const struct i2c_device_id gl520_id[] = { 910 { "gl520sm", 0 }, 911 { } 912 }; 913 MODULE_DEVICE_TABLE(i2c, gl520_id); 914 915 static struct i2c_driver gl520_driver = { 916 .class = I2C_CLASS_HWMON, 917 .driver = { 918 .name = "gl520sm", 919 }, 920 .probe = gl520_probe, 921 .id_table = gl520_id, 922 .detect = gl520_detect, 923 .address_list = normal_i2c, 924 }; 925 926 module_i2c_driver(gl520_driver); 927 928 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " 929 "Kyösti Mälkki <kmalkki@cc.hut.fi>, " 930 "Maarten Deprez <maartendeprez@users.sourceforge.net>"); 931 MODULE_DESCRIPTION("GL520SM driver"); 932 MODULE_LICENSE("GPL"); 933