1 /* 2 * w83793.c - Linux kernel driver for hardware monitoring 3 * Copyright (C) 2006 Winbond Electronics Corp. 4 * Yuan Mu 5 * Rudolf Marek <r.marek@assembler.cz> 6 * Copyright (C) 2009-2010 Sven Anders <anders@anduras.de>, ANDURAS AG. 7 * Watchdog driver part 8 * (Based partially on fschmd driver, 9 * Copyright 2007-2008 by Hans de Goede) 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation - version 2. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 23 * 02110-1301 USA. 24 */ 25 26 /* 27 * Supports following chips: 28 * 29 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA 30 * w83793 10 12 8 6 0x7b 0x5ca3 yes no 31 */ 32 33 #include <linux/module.h> 34 #include <linux/init.h> 35 #include <linux/slab.h> 36 #include <linux/i2c.h> 37 #include <linux/hwmon.h> 38 #include <linux/hwmon-vid.h> 39 #include <linux/hwmon-sysfs.h> 40 #include <linux/err.h> 41 #include <linux/mutex.h> 42 #include <linux/fs.h> 43 #include <linux/watchdog.h> 44 #include <linux/miscdevice.h> 45 #include <linux/uaccess.h> 46 #include <linux/kref.h> 47 #include <linux/notifier.h> 48 #include <linux/reboot.h> 49 50 /* Default values */ 51 #define WATCHDOG_TIMEOUT 2 /* 2 minute default timeout */ 52 53 /* Addresses to scan */ 54 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, 55 I2C_CLIENT_END }; 56 57 /* Insmod parameters */ 58 59 static unsigned short force_subclients[4]; 60 module_param_array(force_subclients, short, NULL, 0); 61 MODULE_PARM_DESC(force_subclients, "List of subclient addresses: " 62 "{bus, clientaddr, subclientaddr1, subclientaddr2}"); 63 64 static bool reset; 65 module_param(reset, bool, 0); 66 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); 67 68 static int timeout = WATCHDOG_TIMEOUT; /* default timeout in minutes */ 69 module_param(timeout, int, 0); 70 MODULE_PARM_DESC(timeout, 71 "Watchdog timeout in minutes. 2<= timeout <=255 (default=" 72 __MODULE_STRING(WATCHDOG_TIMEOUT) ")"); 73 74 static bool nowayout = WATCHDOG_NOWAYOUT; 75 module_param(nowayout, bool, 0); 76 MODULE_PARM_DESC(nowayout, 77 "Watchdog cannot be stopped once started (default=" 78 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); 79 80 /* 81 * Address 0x00, 0x0d, 0x0e, 0x0f in all three banks are reserved 82 * as ID, Bank Select registers 83 */ 84 #define W83793_REG_BANKSEL 0x00 85 #define W83793_REG_VENDORID 0x0d 86 #define W83793_REG_CHIPID 0x0e 87 #define W83793_REG_DEVICEID 0x0f 88 89 #define W83793_REG_CONFIG 0x40 90 #define W83793_REG_MFC 0x58 91 #define W83793_REG_FANIN_CTRL 0x5c 92 #define W83793_REG_FANIN_SEL 0x5d 93 #define W83793_REG_I2C_ADDR 0x0b 94 #define W83793_REG_I2C_SUBADDR 0x0c 95 #define W83793_REG_VID_INA 0x05 96 #define W83793_REG_VID_INB 0x06 97 #define W83793_REG_VID_LATCHA 0x07 98 #define W83793_REG_VID_LATCHB 0x08 99 #define W83793_REG_VID_CTRL 0x59 100 101 #define W83793_REG_WDT_LOCK 0x01 102 #define W83793_REG_WDT_ENABLE 0x02 103 #define W83793_REG_WDT_STATUS 0x03 104 #define W83793_REG_WDT_TIMEOUT 0x04 105 106 static u16 W83793_REG_TEMP_MODE[2] = { 0x5e, 0x5f }; 107 108 #define TEMP_READ 0 109 #define TEMP_CRIT 1 110 #define TEMP_CRIT_HYST 2 111 #define TEMP_WARN 3 112 #define TEMP_WARN_HYST 4 113 /* 114 * only crit and crit_hyst affect real-time alarm status 115 * current crit crit_hyst warn warn_hyst 116 */ 117 static u16 W83793_REG_TEMP[][5] = { 118 {0x1c, 0x78, 0x79, 0x7a, 0x7b}, 119 {0x1d, 0x7c, 0x7d, 0x7e, 0x7f}, 120 {0x1e, 0x80, 0x81, 0x82, 0x83}, 121 {0x1f, 0x84, 0x85, 0x86, 0x87}, 122 {0x20, 0x88, 0x89, 0x8a, 0x8b}, 123 {0x21, 0x8c, 0x8d, 0x8e, 0x8f}, 124 }; 125 126 #define W83793_REG_TEMP_LOW_BITS 0x22 127 128 #define W83793_REG_BEEP(index) (0x53 + (index)) 129 #define W83793_REG_ALARM(index) (0x4b + (index)) 130 131 #define W83793_REG_CLR_CHASSIS 0x4a /* SMI MASK4 */ 132 #define W83793_REG_IRQ_CTRL 0x50 133 #define W83793_REG_OVT_CTRL 0x51 134 #define W83793_REG_OVT_BEEP 0x52 135 136 #define IN_READ 0 137 #define IN_MAX 1 138 #define IN_LOW 2 139 static const u16 W83793_REG_IN[][3] = { 140 /* Current, High, Low */ 141 {0x10, 0x60, 0x61}, /* Vcore A */ 142 {0x11, 0x62, 0x63}, /* Vcore B */ 143 {0x12, 0x64, 0x65}, /* Vtt */ 144 {0x14, 0x6a, 0x6b}, /* VSEN1 */ 145 {0x15, 0x6c, 0x6d}, /* VSEN2 */ 146 {0x16, 0x6e, 0x6f}, /* +3VSEN */ 147 {0x17, 0x70, 0x71}, /* +12VSEN */ 148 {0x18, 0x72, 0x73}, /* 5VDD */ 149 {0x19, 0x74, 0x75}, /* 5VSB */ 150 {0x1a, 0x76, 0x77}, /* VBAT */ 151 }; 152 153 /* Low Bits of Vcore A/B Vtt Read/High/Low */ 154 static const u16 W83793_REG_IN_LOW_BITS[] = { 0x1b, 0x68, 0x69 }; 155 static u8 scale_in[] = { 2, 2, 2, 16, 16, 16, 8, 24, 24, 16 }; 156 static u8 scale_in_add[] = { 0, 0, 0, 0, 0, 0, 0, 150, 150, 0 }; 157 158 #define W83793_REG_FAN(index) (0x23 + 2 * (index)) /* High byte */ 159 #define W83793_REG_FAN_MIN(index) (0x90 + 2 * (index)) /* High byte */ 160 161 #define W83793_REG_PWM_DEFAULT 0xb2 162 #define W83793_REG_PWM_ENABLE 0x207 163 #define W83793_REG_PWM_UPTIME 0xc3 /* Unit in 0.1 second */ 164 #define W83793_REG_PWM_DOWNTIME 0xc4 /* Unit in 0.1 second */ 165 #define W83793_REG_TEMP_CRITICAL 0xc5 166 167 #define PWM_DUTY 0 168 #define PWM_START 1 169 #define PWM_NONSTOP 2 170 #define PWM_STOP_TIME 3 171 #define W83793_REG_PWM(index, nr) (((nr) == 0 ? 0xb3 : \ 172 (nr) == 1 ? 0x220 : 0x218) + (index)) 173 174 /* bit field, fan1 is bit0, fan2 is bit1 ... */ 175 #define W83793_REG_TEMP_FAN_MAP(index) (0x201 + (index)) 176 #define W83793_REG_TEMP_TOL(index) (0x208 + (index)) 177 #define W83793_REG_TEMP_CRUISE(index) (0x210 + (index)) 178 #define W83793_REG_PWM_STOP_TIME(index) (0x228 + (index)) 179 #define W83793_REG_SF2_TEMP(index, nr) (0x230 + ((index) << 4) + (nr)) 180 #define W83793_REG_SF2_PWM(index, nr) (0x238 + ((index) << 4) + (nr)) 181 182 static inline unsigned long FAN_FROM_REG(u16 val) 183 { 184 if ((val >= 0xfff) || (val == 0)) 185 return 0; 186 return 1350000UL / val; 187 } 188 189 static inline u16 FAN_TO_REG(long rpm) 190 { 191 if (rpm <= 0) 192 return 0x0fff; 193 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); 194 } 195 196 static inline unsigned long TIME_FROM_REG(u8 reg) 197 { 198 return reg * 100; 199 } 200 201 static inline u8 TIME_TO_REG(unsigned long val) 202 { 203 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff); 204 } 205 206 static inline long TEMP_FROM_REG(s8 reg) 207 { 208 return reg * 1000; 209 } 210 211 static inline s8 TEMP_TO_REG(long val, s8 min, s8 max) 212 { 213 return SENSORS_LIMIT((val + (val < 0 ? -500 : 500)) / 1000, min, max); 214 } 215 216 struct w83793_data { 217 struct i2c_client *lm75[2]; 218 struct device *hwmon_dev; 219 struct mutex update_lock; 220 char valid; /* !=0 if following fields are valid */ 221 unsigned long last_updated; /* In jiffies */ 222 unsigned long last_nonvolatile; /* In jiffies, last time we update the 223 * nonvolatile registers 224 */ 225 226 u8 bank; 227 u8 vrm; 228 u8 vid[2]; 229 u8 in[10][3]; /* Register value, read/high/low */ 230 u8 in_low_bits[3]; /* Additional resolution for VCore A/B Vtt */ 231 232 u16 has_fan; /* Only fan1- fan5 has own pins */ 233 u16 fan[12]; /* Register value combine */ 234 u16 fan_min[12]; /* Register value combine */ 235 236 s8 temp[6][5]; /* current, crit, crit_hyst,warn, warn_hyst */ 237 u8 temp_low_bits; /* Additional resolution TD1-TD4 */ 238 u8 temp_mode[2]; /* byte 0: Temp D1-D4 mode each has 2 bits 239 * byte 1: Temp R1,R2 mode, each has 1 bit 240 */ 241 u8 temp_critical; /* If reached all fan will be at full speed */ 242 u8 temp_fan_map[6]; /* Temp controls which pwm fan, bit field */ 243 244 u8 has_pwm; 245 u8 has_temp; 246 u8 has_vid; 247 u8 pwm_enable; /* Register value, each Temp has 1 bit */ 248 u8 pwm_uptime; /* Register value */ 249 u8 pwm_downtime; /* Register value */ 250 u8 pwm_default; /* All fan default pwm, next poweron valid */ 251 u8 pwm[8][3]; /* Register value */ 252 u8 pwm_stop_time[8]; 253 u8 temp_cruise[6]; 254 255 u8 alarms[5]; /* realtime status registers */ 256 u8 beeps[5]; 257 u8 beep_enable; 258 u8 tolerance[3]; /* Temp tolerance(Smart Fan I/II) */ 259 u8 sf2_pwm[6][7]; /* Smart FanII: Fan duty cycle */ 260 u8 sf2_temp[6][7]; /* Smart FanII: Temp level point */ 261 262 /* watchdog */ 263 struct i2c_client *client; 264 struct mutex watchdog_lock; 265 struct list_head list; /* member of the watchdog_data_list */ 266 struct kref kref; 267 struct miscdevice watchdog_miscdev; 268 unsigned long watchdog_is_open; 269 char watchdog_expect_close; 270 char watchdog_name[10]; /* must be unique to avoid sysfs conflict */ 271 unsigned int watchdog_caused_reboot; 272 int watchdog_timeout; /* watchdog timeout in minutes */ 273 }; 274 275 /* 276 * Somewhat ugly :( global data pointer list with all devices, so that 277 * we can find our device data as when using misc_register. There is no 278 * other method to get to one's device data from the open file-op and 279 * for usage in the reboot notifier callback. 280 */ 281 static LIST_HEAD(watchdog_data_list); 282 283 /* Note this lock not only protect list access, but also data.kref access */ 284 static DEFINE_MUTEX(watchdog_data_mutex); 285 286 /* 287 * Release our data struct when we're detached from the i2c client *and* all 288 * references to our watchdog device are released 289 */ 290 static void w83793_release_resources(struct kref *ref) 291 { 292 struct w83793_data *data = container_of(ref, struct w83793_data, kref); 293 kfree(data); 294 } 295 296 static u8 w83793_read_value(struct i2c_client *client, u16 reg); 297 static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value); 298 static int w83793_probe(struct i2c_client *client, 299 const struct i2c_device_id *id); 300 static int w83793_detect(struct i2c_client *client, 301 struct i2c_board_info *info); 302 static int w83793_remove(struct i2c_client *client); 303 static void w83793_init_client(struct i2c_client *client); 304 static void w83793_update_nonvolatile(struct device *dev); 305 static struct w83793_data *w83793_update_device(struct device *dev); 306 307 static const struct i2c_device_id w83793_id[] = { 308 { "w83793", 0 }, 309 { } 310 }; 311 MODULE_DEVICE_TABLE(i2c, w83793_id); 312 313 static struct i2c_driver w83793_driver = { 314 .class = I2C_CLASS_HWMON, 315 .driver = { 316 .name = "w83793", 317 }, 318 .probe = w83793_probe, 319 .remove = w83793_remove, 320 .id_table = w83793_id, 321 .detect = w83793_detect, 322 .address_list = normal_i2c, 323 }; 324 325 static ssize_t 326 show_vrm(struct device *dev, struct device_attribute *attr, char *buf) 327 { 328 struct w83793_data *data = dev_get_drvdata(dev); 329 return sprintf(buf, "%d\n", data->vrm); 330 } 331 332 static ssize_t 333 show_vid(struct device *dev, struct device_attribute *attr, char *buf) 334 { 335 struct w83793_data *data = w83793_update_device(dev); 336 struct sensor_device_attribute_2 *sensor_attr = 337 to_sensor_dev_attr_2(attr); 338 int index = sensor_attr->index; 339 340 return sprintf(buf, "%d\n", vid_from_reg(data->vid[index], data->vrm)); 341 } 342 343 static ssize_t 344 store_vrm(struct device *dev, struct device_attribute *attr, 345 const char *buf, size_t count) 346 { 347 struct w83793_data *data = dev_get_drvdata(dev); 348 unsigned long val; 349 int err; 350 351 err = kstrtoul(buf, 10, &val); 352 if (err) 353 return err; 354 355 data->vrm = val; 356 return count; 357 } 358 359 #define ALARM_STATUS 0 360 #define BEEP_ENABLE 1 361 static ssize_t 362 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) 363 { 364 struct w83793_data *data = w83793_update_device(dev); 365 struct sensor_device_attribute_2 *sensor_attr = 366 to_sensor_dev_attr_2(attr); 367 int nr = sensor_attr->nr; 368 int index = sensor_attr->index >> 3; 369 int bit = sensor_attr->index & 0x07; 370 u8 val; 371 372 if (nr == ALARM_STATUS) { 373 val = (data->alarms[index] >> (bit)) & 1; 374 } else { /* BEEP_ENABLE */ 375 val = (data->beeps[index] >> (bit)) & 1; 376 } 377 378 return sprintf(buf, "%u\n", val); 379 } 380 381 static ssize_t 382 store_beep(struct device *dev, struct device_attribute *attr, 383 const char *buf, size_t count) 384 { 385 struct i2c_client *client = to_i2c_client(dev); 386 struct w83793_data *data = i2c_get_clientdata(client); 387 struct sensor_device_attribute_2 *sensor_attr = 388 to_sensor_dev_attr_2(attr); 389 int index = sensor_attr->index >> 3; 390 int shift = sensor_attr->index & 0x07; 391 u8 beep_bit = 1 << shift; 392 unsigned long val; 393 int err; 394 395 err = kstrtoul(buf, 10, &val); 396 if (err) 397 return err; 398 399 if (val > 1) 400 return -EINVAL; 401 402 mutex_lock(&data->update_lock); 403 data->beeps[index] = w83793_read_value(client, W83793_REG_BEEP(index)); 404 data->beeps[index] &= ~beep_bit; 405 data->beeps[index] |= val << shift; 406 w83793_write_value(client, W83793_REG_BEEP(index), data->beeps[index]); 407 mutex_unlock(&data->update_lock); 408 409 return count; 410 } 411 412 static ssize_t 413 show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf) 414 { 415 struct w83793_data *data = w83793_update_device(dev); 416 return sprintf(buf, "%u\n", (data->beep_enable >> 1) & 0x01); 417 } 418 419 static ssize_t 420 store_beep_enable(struct device *dev, struct device_attribute *attr, 421 const char *buf, size_t count) 422 { 423 struct i2c_client *client = to_i2c_client(dev); 424 struct w83793_data *data = i2c_get_clientdata(client); 425 unsigned long val; 426 int err; 427 428 err = kstrtoul(buf, 10, &val); 429 if (err) 430 return err; 431 432 if (val > 1) 433 return -EINVAL; 434 435 mutex_lock(&data->update_lock); 436 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP) 437 & 0xfd; 438 data->beep_enable |= val << 1; 439 w83793_write_value(client, W83793_REG_OVT_BEEP, data->beep_enable); 440 mutex_unlock(&data->update_lock); 441 442 return count; 443 } 444 445 /* Write any value to clear chassis alarm */ 446 static ssize_t 447 store_chassis_clear_legacy(struct device *dev, 448 struct device_attribute *attr, const char *buf, 449 size_t count) 450 { 451 struct i2c_client *client = to_i2c_client(dev); 452 struct w83793_data *data = i2c_get_clientdata(client); 453 u8 val; 454 455 dev_warn(dev, "Attribute chassis is deprecated, " 456 "use intrusion0_alarm instead\n"); 457 458 mutex_lock(&data->update_lock); 459 val = w83793_read_value(client, W83793_REG_CLR_CHASSIS); 460 val |= 0x80; 461 w83793_write_value(client, W83793_REG_CLR_CHASSIS, val); 462 mutex_unlock(&data->update_lock); 463 return count; 464 } 465 466 /* Write 0 to clear chassis alarm */ 467 static ssize_t 468 store_chassis_clear(struct device *dev, 469 struct device_attribute *attr, const char *buf, 470 size_t count) 471 { 472 struct i2c_client *client = to_i2c_client(dev); 473 struct w83793_data *data = i2c_get_clientdata(client); 474 unsigned long val; 475 u8 reg; 476 int err; 477 478 err = kstrtoul(buf, 10, &val); 479 if (err) 480 return err; 481 if (val) 482 return -EINVAL; 483 484 mutex_lock(&data->update_lock); 485 reg = w83793_read_value(client, W83793_REG_CLR_CHASSIS); 486 w83793_write_value(client, W83793_REG_CLR_CHASSIS, reg | 0x80); 487 data->valid = 0; /* Force cache refresh */ 488 mutex_unlock(&data->update_lock); 489 return count; 490 } 491 492 #define FAN_INPUT 0 493 #define FAN_MIN 1 494 static ssize_t 495 show_fan(struct device *dev, struct device_attribute *attr, char *buf) 496 { 497 struct sensor_device_attribute_2 *sensor_attr = 498 to_sensor_dev_attr_2(attr); 499 int nr = sensor_attr->nr; 500 int index = sensor_attr->index; 501 struct w83793_data *data = w83793_update_device(dev); 502 u16 val; 503 504 if (nr == FAN_INPUT) 505 val = data->fan[index] & 0x0fff; 506 else 507 val = data->fan_min[index] & 0x0fff; 508 509 return sprintf(buf, "%lu\n", FAN_FROM_REG(val)); 510 } 511 512 static ssize_t 513 store_fan_min(struct device *dev, struct device_attribute *attr, 514 const char *buf, size_t count) 515 { 516 struct sensor_device_attribute_2 *sensor_attr = 517 to_sensor_dev_attr_2(attr); 518 int index = sensor_attr->index; 519 struct i2c_client *client = to_i2c_client(dev); 520 struct w83793_data *data = i2c_get_clientdata(client); 521 unsigned long val; 522 int err; 523 524 err = kstrtoul(buf, 10, &val); 525 if (err) 526 return err; 527 val = FAN_TO_REG(val); 528 529 mutex_lock(&data->update_lock); 530 data->fan_min[index] = val; 531 w83793_write_value(client, W83793_REG_FAN_MIN(index), 532 (val >> 8) & 0xff); 533 w83793_write_value(client, W83793_REG_FAN_MIN(index) + 1, val & 0xff); 534 mutex_unlock(&data->update_lock); 535 536 return count; 537 } 538 539 static ssize_t 540 show_pwm(struct device *dev, struct device_attribute *attr, char *buf) 541 { 542 struct sensor_device_attribute_2 *sensor_attr = 543 to_sensor_dev_attr_2(attr); 544 struct w83793_data *data = w83793_update_device(dev); 545 u16 val; 546 int nr = sensor_attr->nr; 547 int index = sensor_attr->index; 548 549 if (nr == PWM_STOP_TIME) 550 val = TIME_FROM_REG(data->pwm_stop_time[index]); 551 else 552 val = (data->pwm[index][nr] & 0x3f) << 2; 553 554 return sprintf(buf, "%d\n", val); 555 } 556 557 static ssize_t 558 store_pwm(struct device *dev, struct device_attribute *attr, 559 const char *buf, size_t count) 560 { 561 struct i2c_client *client = to_i2c_client(dev); 562 struct w83793_data *data = i2c_get_clientdata(client); 563 struct sensor_device_attribute_2 *sensor_attr = 564 to_sensor_dev_attr_2(attr); 565 int nr = sensor_attr->nr; 566 int index = sensor_attr->index; 567 unsigned long val; 568 int err; 569 570 err = kstrtoul(buf, 10, &val); 571 if (err) 572 return err; 573 574 mutex_lock(&data->update_lock); 575 if (nr == PWM_STOP_TIME) { 576 val = TIME_TO_REG(val); 577 data->pwm_stop_time[index] = val; 578 w83793_write_value(client, W83793_REG_PWM_STOP_TIME(index), 579 val); 580 } else { 581 val = SENSORS_LIMIT(val, 0, 0xff) >> 2; 582 data->pwm[index][nr] = 583 w83793_read_value(client, W83793_REG_PWM(index, nr)) & 0xc0; 584 data->pwm[index][nr] |= val; 585 w83793_write_value(client, W83793_REG_PWM(index, nr), 586 data->pwm[index][nr]); 587 } 588 589 mutex_unlock(&data->update_lock); 590 return count; 591 } 592 593 static ssize_t 594 show_temp(struct device *dev, struct device_attribute *attr, char *buf) 595 { 596 struct sensor_device_attribute_2 *sensor_attr = 597 to_sensor_dev_attr_2(attr); 598 int nr = sensor_attr->nr; 599 int index = sensor_attr->index; 600 struct w83793_data *data = w83793_update_device(dev); 601 long temp = TEMP_FROM_REG(data->temp[index][nr]); 602 603 if (nr == TEMP_READ && index < 4) { /* Only TD1-TD4 have low bits */ 604 int low = ((data->temp_low_bits >> (index * 2)) & 0x03) * 250; 605 temp += temp > 0 ? low : -low; 606 } 607 return sprintf(buf, "%ld\n", temp); 608 } 609 610 static ssize_t 611 store_temp(struct device *dev, struct device_attribute *attr, 612 const char *buf, size_t count) 613 { 614 struct sensor_device_attribute_2 *sensor_attr = 615 to_sensor_dev_attr_2(attr); 616 int nr = sensor_attr->nr; 617 int index = sensor_attr->index; 618 struct i2c_client *client = to_i2c_client(dev); 619 struct w83793_data *data = i2c_get_clientdata(client); 620 long tmp; 621 int err; 622 623 err = kstrtol(buf, 10, &tmp); 624 if (err) 625 return err; 626 627 mutex_lock(&data->update_lock); 628 data->temp[index][nr] = TEMP_TO_REG(tmp, -128, 127); 629 w83793_write_value(client, W83793_REG_TEMP[index][nr], 630 data->temp[index][nr]); 631 mutex_unlock(&data->update_lock); 632 return count; 633 } 634 635 /* 636 * TD1-TD4 637 * each has 4 mode:(2 bits) 638 * 0: Stop monitor 639 * 1: Use internal temp sensor(default) 640 * 2: Reserved 641 * 3: Use sensor in Intel CPU and get result by PECI 642 * 643 * TR1-TR2 644 * each has 2 mode:(1 bit) 645 * 0: Disable temp sensor monitor 646 * 1: To enable temp sensors monitor 647 */ 648 649 /* 0 disable, 6 PECI */ 650 static u8 TO_TEMP_MODE[] = { 0, 0, 0, 6 }; 651 652 static ssize_t 653 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) 654 { 655 struct w83793_data *data = w83793_update_device(dev); 656 struct sensor_device_attribute_2 *sensor_attr = 657 to_sensor_dev_attr_2(attr); 658 int index = sensor_attr->index; 659 u8 mask = (index < 4) ? 0x03 : 0x01; 660 u8 shift = (index < 4) ? (2 * index) : (index - 4); 661 u8 tmp; 662 index = (index < 4) ? 0 : 1; 663 664 tmp = (data->temp_mode[index] >> shift) & mask; 665 666 /* for the internal sensor, found out if diode or thermistor */ 667 if (tmp == 1) 668 tmp = index == 0 ? 3 : 4; 669 else 670 tmp = TO_TEMP_MODE[tmp]; 671 672 return sprintf(buf, "%d\n", tmp); 673 } 674 675 static ssize_t 676 store_temp_mode(struct device *dev, struct device_attribute *attr, 677 const char *buf, size_t count) 678 { 679 struct i2c_client *client = to_i2c_client(dev); 680 struct w83793_data *data = i2c_get_clientdata(client); 681 struct sensor_device_attribute_2 *sensor_attr = 682 to_sensor_dev_attr_2(attr); 683 int index = sensor_attr->index; 684 u8 mask = (index < 4) ? 0x03 : 0x01; 685 u8 shift = (index < 4) ? (2 * index) : (index - 4); 686 unsigned long val; 687 int err; 688 689 err = kstrtoul(buf, 10, &val); 690 if (err) 691 return err; 692 693 /* transform the sysfs interface values into table above */ 694 if ((val == 6) && (index < 4)) { 695 val -= 3; 696 } else if ((val == 3 && index < 4) 697 || (val == 4 && index >= 4)) { 698 /* transform diode or thermistor into internal enable */ 699 val = !!val; 700 } else { 701 return -EINVAL; 702 } 703 704 index = (index < 4) ? 0 : 1; 705 mutex_lock(&data->update_lock); 706 data->temp_mode[index] = 707 w83793_read_value(client, W83793_REG_TEMP_MODE[index]); 708 data->temp_mode[index] &= ~(mask << shift); 709 data->temp_mode[index] |= val << shift; 710 w83793_write_value(client, W83793_REG_TEMP_MODE[index], 711 data->temp_mode[index]); 712 mutex_unlock(&data->update_lock); 713 714 return count; 715 } 716 717 #define SETUP_PWM_DEFAULT 0 718 #define SETUP_PWM_UPTIME 1 /* Unit in 0.1s */ 719 #define SETUP_PWM_DOWNTIME 2 /* Unit in 0.1s */ 720 #define SETUP_TEMP_CRITICAL 3 721 static ssize_t 722 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) 723 { 724 struct sensor_device_attribute_2 *sensor_attr = 725 to_sensor_dev_attr_2(attr); 726 int nr = sensor_attr->nr; 727 struct w83793_data *data = w83793_update_device(dev); 728 u32 val = 0; 729 730 if (nr == SETUP_PWM_DEFAULT) 731 val = (data->pwm_default & 0x3f) << 2; 732 else if (nr == SETUP_PWM_UPTIME) 733 val = TIME_FROM_REG(data->pwm_uptime); 734 else if (nr == SETUP_PWM_DOWNTIME) 735 val = TIME_FROM_REG(data->pwm_downtime); 736 else if (nr == SETUP_TEMP_CRITICAL) 737 val = TEMP_FROM_REG(data->temp_critical & 0x7f); 738 739 return sprintf(buf, "%d\n", val); 740 } 741 742 static ssize_t 743 store_sf_setup(struct device *dev, struct device_attribute *attr, 744 const char *buf, size_t count) 745 { 746 struct sensor_device_attribute_2 *sensor_attr = 747 to_sensor_dev_attr_2(attr); 748 int nr = sensor_attr->nr; 749 struct i2c_client *client = to_i2c_client(dev); 750 struct w83793_data *data = i2c_get_clientdata(client); 751 long val; 752 int err; 753 754 err = kstrtol(buf, 10, &val); 755 if (err) 756 return err; 757 758 mutex_lock(&data->update_lock); 759 if (nr == SETUP_PWM_DEFAULT) { 760 data->pwm_default = 761 w83793_read_value(client, W83793_REG_PWM_DEFAULT) & 0xc0; 762 data->pwm_default |= SENSORS_LIMIT(val, 0, 0xff) >> 2; 763 w83793_write_value(client, W83793_REG_PWM_DEFAULT, 764 data->pwm_default); 765 } else if (nr == SETUP_PWM_UPTIME) { 766 data->pwm_uptime = TIME_TO_REG(val); 767 data->pwm_uptime += data->pwm_uptime == 0 ? 1 : 0; 768 w83793_write_value(client, W83793_REG_PWM_UPTIME, 769 data->pwm_uptime); 770 } else if (nr == SETUP_PWM_DOWNTIME) { 771 data->pwm_downtime = TIME_TO_REG(val); 772 data->pwm_downtime += data->pwm_downtime == 0 ? 1 : 0; 773 w83793_write_value(client, W83793_REG_PWM_DOWNTIME, 774 data->pwm_downtime); 775 } else { /* SETUP_TEMP_CRITICAL */ 776 data->temp_critical = 777 w83793_read_value(client, W83793_REG_TEMP_CRITICAL) & 0x80; 778 data->temp_critical |= TEMP_TO_REG(val, 0, 0x7f); 779 w83793_write_value(client, W83793_REG_TEMP_CRITICAL, 780 data->temp_critical); 781 } 782 783 mutex_unlock(&data->update_lock); 784 return count; 785 } 786 787 /* 788 * Temp SmartFan control 789 * TEMP_FAN_MAP 790 * Temp channel control which pwm fan, bitfield, bit 0 indicate pwm1... 791 * It's possible two or more temp channels control the same fan, w83793 792 * always prefers to pick the most critical request and applies it to 793 * the related Fan. 794 * It's possible one fan is not in any mapping of 6 temp channels, this 795 * means the fan is manual mode 796 * 797 * TEMP_PWM_ENABLE 798 * Each temp channel has its own SmartFan mode, and temp channel 799 * control fans that are set by TEMP_FAN_MAP 800 * 0: SmartFanII mode 801 * 1: Thermal Cruise Mode 802 * 803 * TEMP_CRUISE 804 * Target temperature in thermal cruise mode, w83793 will try to turn 805 * fan speed to keep the temperature of target device around this 806 * temperature. 807 * 808 * TEMP_TOLERANCE 809 * If Temp higher or lower than target with this tolerance, w83793 810 * will take actions to speed up or slow down the fan to keep the 811 * temperature within the tolerance range. 812 */ 813 814 #define TEMP_FAN_MAP 0 815 #define TEMP_PWM_ENABLE 1 816 #define TEMP_CRUISE 2 817 #define TEMP_TOLERANCE 3 818 static ssize_t 819 show_sf_ctrl(struct device *dev, struct device_attribute *attr, char *buf) 820 { 821 struct sensor_device_attribute_2 *sensor_attr = 822 to_sensor_dev_attr_2(attr); 823 int nr = sensor_attr->nr; 824 int index = sensor_attr->index; 825 struct w83793_data *data = w83793_update_device(dev); 826 u32 val; 827 828 if (nr == TEMP_FAN_MAP) { 829 val = data->temp_fan_map[index]; 830 } else if (nr == TEMP_PWM_ENABLE) { 831 /* +2 to transfrom into 2 and 3 to conform with sysfs intf */ 832 val = ((data->pwm_enable >> index) & 0x01) + 2; 833 } else if (nr == TEMP_CRUISE) { 834 val = TEMP_FROM_REG(data->temp_cruise[index] & 0x7f); 835 } else { /* TEMP_TOLERANCE */ 836 val = data->tolerance[index >> 1] >> ((index & 0x01) ? 4 : 0); 837 val = TEMP_FROM_REG(val & 0x0f); 838 } 839 return sprintf(buf, "%d\n", val); 840 } 841 842 static ssize_t 843 store_sf_ctrl(struct device *dev, struct device_attribute *attr, 844 const char *buf, size_t count) 845 { 846 struct sensor_device_attribute_2 *sensor_attr = 847 to_sensor_dev_attr_2(attr); 848 int nr = sensor_attr->nr; 849 int index = sensor_attr->index; 850 struct i2c_client *client = to_i2c_client(dev); 851 struct w83793_data *data = i2c_get_clientdata(client); 852 long val; 853 int err; 854 855 err = kstrtol(buf, 10, &val); 856 if (err) 857 return err; 858 859 mutex_lock(&data->update_lock); 860 if (nr == TEMP_FAN_MAP) { 861 val = SENSORS_LIMIT(val, 0, 255); 862 w83793_write_value(client, W83793_REG_TEMP_FAN_MAP(index), val); 863 data->temp_fan_map[index] = val; 864 } else if (nr == TEMP_PWM_ENABLE) { 865 if (val == 2 || val == 3) { 866 data->pwm_enable = 867 w83793_read_value(client, W83793_REG_PWM_ENABLE); 868 if (val - 2) 869 data->pwm_enable |= 1 << index; 870 else 871 data->pwm_enable &= ~(1 << index); 872 w83793_write_value(client, W83793_REG_PWM_ENABLE, 873 data->pwm_enable); 874 } else { 875 mutex_unlock(&data->update_lock); 876 return -EINVAL; 877 } 878 } else if (nr == TEMP_CRUISE) { 879 data->temp_cruise[index] = 880 w83793_read_value(client, W83793_REG_TEMP_CRUISE(index)); 881 data->temp_cruise[index] &= 0x80; 882 data->temp_cruise[index] |= TEMP_TO_REG(val, 0, 0x7f); 883 884 w83793_write_value(client, W83793_REG_TEMP_CRUISE(index), 885 data->temp_cruise[index]); 886 } else { /* TEMP_TOLERANCE */ 887 int i = index >> 1; 888 u8 shift = (index & 0x01) ? 4 : 0; 889 data->tolerance[i] = 890 w83793_read_value(client, W83793_REG_TEMP_TOL(i)); 891 892 data->tolerance[i] &= ~(0x0f << shift); 893 data->tolerance[i] |= TEMP_TO_REG(val, 0, 0x0f) << shift; 894 w83793_write_value(client, W83793_REG_TEMP_TOL(i), 895 data->tolerance[i]); 896 } 897 898 mutex_unlock(&data->update_lock); 899 return count; 900 } 901 902 static ssize_t 903 show_sf2_pwm(struct device *dev, struct device_attribute *attr, char *buf) 904 { 905 struct sensor_device_attribute_2 *sensor_attr = 906 to_sensor_dev_attr_2(attr); 907 int nr = sensor_attr->nr; 908 int index = sensor_attr->index; 909 struct w83793_data *data = w83793_update_device(dev); 910 911 return sprintf(buf, "%d\n", (data->sf2_pwm[index][nr] & 0x3f) << 2); 912 } 913 914 static ssize_t 915 store_sf2_pwm(struct device *dev, struct device_attribute *attr, 916 const char *buf, size_t count) 917 { 918 struct i2c_client *client = to_i2c_client(dev); 919 struct w83793_data *data = i2c_get_clientdata(client); 920 struct sensor_device_attribute_2 *sensor_attr = 921 to_sensor_dev_attr_2(attr); 922 int nr = sensor_attr->nr; 923 int index = sensor_attr->index; 924 unsigned long val; 925 int err; 926 927 err = kstrtoul(buf, 10, &val); 928 if (err) 929 return err; 930 val = SENSORS_LIMIT(val, 0, 0xff) >> 2; 931 932 mutex_lock(&data->update_lock); 933 data->sf2_pwm[index][nr] = 934 w83793_read_value(client, W83793_REG_SF2_PWM(index, nr)) & 0xc0; 935 data->sf2_pwm[index][nr] |= val; 936 w83793_write_value(client, W83793_REG_SF2_PWM(index, nr), 937 data->sf2_pwm[index][nr]); 938 mutex_unlock(&data->update_lock); 939 return count; 940 } 941 942 static ssize_t 943 show_sf2_temp(struct device *dev, struct device_attribute *attr, char *buf) 944 { 945 struct sensor_device_attribute_2 *sensor_attr = 946 to_sensor_dev_attr_2(attr); 947 int nr = sensor_attr->nr; 948 int index = sensor_attr->index; 949 struct w83793_data *data = w83793_update_device(dev); 950 951 return sprintf(buf, "%ld\n", 952 TEMP_FROM_REG(data->sf2_temp[index][nr] & 0x7f)); 953 } 954 955 static ssize_t 956 store_sf2_temp(struct device *dev, struct device_attribute *attr, 957 const char *buf, size_t count) 958 { 959 struct i2c_client *client = to_i2c_client(dev); 960 struct w83793_data *data = i2c_get_clientdata(client); 961 struct sensor_device_attribute_2 *sensor_attr = 962 to_sensor_dev_attr_2(attr); 963 int nr = sensor_attr->nr; 964 int index = sensor_attr->index; 965 long val; 966 int err; 967 968 err = kstrtol(buf, 10, &val); 969 if (err) 970 return err; 971 val = TEMP_TO_REG(val, 0, 0x7f); 972 973 mutex_lock(&data->update_lock); 974 data->sf2_temp[index][nr] = 975 w83793_read_value(client, W83793_REG_SF2_TEMP(index, nr)) & 0x80; 976 data->sf2_temp[index][nr] |= val; 977 w83793_write_value(client, W83793_REG_SF2_TEMP(index, nr), 978 data->sf2_temp[index][nr]); 979 mutex_unlock(&data->update_lock); 980 return count; 981 } 982 983 /* only Vcore A/B and Vtt have additional 2 bits precision */ 984 static ssize_t 985 show_in(struct device *dev, struct device_attribute *attr, char *buf) 986 { 987 struct sensor_device_attribute_2 *sensor_attr = 988 to_sensor_dev_attr_2(attr); 989 int nr = sensor_attr->nr; 990 int index = sensor_attr->index; 991 struct w83793_data *data = w83793_update_device(dev); 992 u16 val = data->in[index][nr]; 993 994 if (index < 3) { 995 val <<= 2; 996 val += (data->in_low_bits[nr] >> (index * 2)) & 0x3; 997 } 998 /* voltage inputs 5VDD and 5VSB needs 150mV offset */ 999 val = val * scale_in[index] + scale_in_add[index]; 1000 return sprintf(buf, "%d\n", val); 1001 } 1002 1003 static ssize_t 1004 store_in(struct device *dev, struct device_attribute *attr, 1005 const char *buf, size_t count) 1006 { 1007 struct sensor_device_attribute_2 *sensor_attr = 1008 to_sensor_dev_attr_2(attr); 1009 int nr = sensor_attr->nr; 1010 int index = sensor_attr->index; 1011 struct i2c_client *client = to_i2c_client(dev); 1012 struct w83793_data *data = i2c_get_clientdata(client); 1013 unsigned long val; 1014 int err; 1015 1016 err = kstrtoul(buf, 10, &val); 1017 if (err) 1018 return err; 1019 val = (val + scale_in[index] / 2) / scale_in[index]; 1020 1021 mutex_lock(&data->update_lock); 1022 if (index > 2) { 1023 /* fix the limit values of 5VDD and 5VSB to ALARM mechanism */ 1024 if (nr == 1 || nr == 2) 1025 val -= scale_in_add[index] / scale_in[index]; 1026 val = SENSORS_LIMIT(val, 0, 255); 1027 } else { 1028 val = SENSORS_LIMIT(val, 0, 0x3FF); 1029 data->in_low_bits[nr] = 1030 w83793_read_value(client, W83793_REG_IN_LOW_BITS[nr]); 1031 data->in_low_bits[nr] &= ~(0x03 << (2 * index)); 1032 data->in_low_bits[nr] |= (val & 0x03) << (2 * index); 1033 w83793_write_value(client, W83793_REG_IN_LOW_BITS[nr], 1034 data->in_low_bits[nr]); 1035 val >>= 2; 1036 } 1037 data->in[index][nr] = val; 1038 w83793_write_value(client, W83793_REG_IN[index][nr], 1039 data->in[index][nr]); 1040 mutex_unlock(&data->update_lock); 1041 return count; 1042 } 1043 1044 #define NOT_USED -1 1045 1046 #define SENSOR_ATTR_IN(index) \ 1047 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ 1048 IN_READ, index), \ 1049 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ 1050 store_in, IN_MAX, index), \ 1051 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ 1052 store_in, IN_LOW, index), \ 1053 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ 1054 NULL, ALARM_STATUS, index + ((index > 2) ? 1 : 0)), \ 1055 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ 1056 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1057 index + ((index > 2) ? 1 : 0)) 1058 1059 #define SENSOR_ATTR_FAN(index) \ 1060 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ 1061 NULL, ALARM_STATUS, index + 17), \ 1062 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ 1063 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17), \ 1064 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ 1065 NULL, FAN_INPUT, index - 1), \ 1066 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ 1067 show_fan, store_fan_min, FAN_MIN, index - 1) 1068 1069 #define SENSOR_ATTR_PWM(index) \ 1070 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ 1071 store_pwm, PWM_DUTY, index - 1), \ 1072 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ 1073 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ 1074 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ 1075 show_pwm, store_pwm, PWM_START, index - 1), \ 1076 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ 1077 show_pwm, store_pwm, PWM_STOP_TIME, index - 1) 1078 1079 #define SENSOR_ATTR_TEMP(index) \ 1080 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR, \ 1081 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ 1082 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ 1083 NULL, TEMP_READ, index - 1), \ 1084 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ 1085 store_temp, TEMP_CRIT, index - 1), \ 1086 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1087 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ 1088 SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \ 1089 store_temp, TEMP_WARN, index - 1), \ 1090 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \ 1091 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ 1092 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1093 show_alarm_beep, NULL, ALARM_STATUS, index + 11), \ 1094 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1095 show_alarm_beep, store_beep, BEEP_ENABLE, index + 11), \ 1096 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, \ 1097 S_IRUGO | S_IWUSR, show_sf_ctrl, store_sf_ctrl, \ 1098 TEMP_FAN_MAP, index - 1), \ 1099 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ 1100 show_sf_ctrl, store_sf_ctrl, TEMP_PWM_ENABLE, \ 1101 index - 1), \ 1102 SENSOR_ATTR_2(thermal_cruise##index, S_IRUGO | S_IWUSR, \ 1103 show_sf_ctrl, store_sf_ctrl, TEMP_CRUISE, index - 1), \ 1104 SENSOR_ATTR_2(tolerance##index, S_IRUGO | S_IWUSR, show_sf_ctrl,\ 1105 store_sf_ctrl, TEMP_TOLERANCE, index - 1), \ 1106 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ 1107 show_sf2_pwm, store_sf2_pwm, 0, index - 1), \ 1108 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ 1109 show_sf2_pwm, store_sf2_pwm, 1, index - 1), \ 1110 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ 1111 show_sf2_pwm, store_sf2_pwm, 2, index - 1), \ 1112 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ 1113 show_sf2_pwm, store_sf2_pwm, 3, index - 1), \ 1114 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ 1115 show_sf2_pwm, store_sf2_pwm, 4, index - 1), \ 1116 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ 1117 show_sf2_pwm, store_sf2_pwm, 5, index - 1), \ 1118 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ 1119 show_sf2_pwm, store_sf2_pwm, 6, index - 1), \ 1120 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ 1121 show_sf2_temp, store_sf2_temp, 0, index - 1), \ 1122 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ 1123 show_sf2_temp, store_sf2_temp, 1, index - 1), \ 1124 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ 1125 show_sf2_temp, store_sf2_temp, 2, index - 1), \ 1126 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ 1127 show_sf2_temp, store_sf2_temp, 3, index - 1), \ 1128 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ 1129 show_sf2_temp, store_sf2_temp, 4, index - 1), \ 1130 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ 1131 show_sf2_temp, store_sf2_temp, 5, index - 1), \ 1132 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ 1133 show_sf2_temp, store_sf2_temp, 6, index - 1) 1134 1135 static struct sensor_device_attribute_2 w83793_sensor_attr_2[] = { 1136 SENSOR_ATTR_IN(0), 1137 SENSOR_ATTR_IN(1), 1138 SENSOR_ATTR_IN(2), 1139 SENSOR_ATTR_IN(3), 1140 SENSOR_ATTR_IN(4), 1141 SENSOR_ATTR_IN(5), 1142 SENSOR_ATTR_IN(6), 1143 SENSOR_ATTR_IN(7), 1144 SENSOR_ATTR_IN(8), 1145 SENSOR_ATTR_IN(9), 1146 SENSOR_ATTR_FAN(1), 1147 SENSOR_ATTR_FAN(2), 1148 SENSOR_ATTR_FAN(3), 1149 SENSOR_ATTR_FAN(4), 1150 SENSOR_ATTR_FAN(5), 1151 SENSOR_ATTR_PWM(1), 1152 SENSOR_ATTR_PWM(2), 1153 SENSOR_ATTR_PWM(3), 1154 }; 1155 1156 static struct sensor_device_attribute_2 w83793_temp[] = { 1157 SENSOR_ATTR_TEMP(1), 1158 SENSOR_ATTR_TEMP(2), 1159 SENSOR_ATTR_TEMP(3), 1160 SENSOR_ATTR_TEMP(4), 1161 SENSOR_ATTR_TEMP(5), 1162 SENSOR_ATTR_TEMP(6), 1163 }; 1164 1165 /* Fan6-Fan12 */ 1166 static struct sensor_device_attribute_2 w83793_left_fan[] = { 1167 SENSOR_ATTR_FAN(6), 1168 SENSOR_ATTR_FAN(7), 1169 SENSOR_ATTR_FAN(8), 1170 SENSOR_ATTR_FAN(9), 1171 SENSOR_ATTR_FAN(10), 1172 SENSOR_ATTR_FAN(11), 1173 SENSOR_ATTR_FAN(12), 1174 }; 1175 1176 /* Pwm4-Pwm8 */ 1177 static struct sensor_device_attribute_2 w83793_left_pwm[] = { 1178 SENSOR_ATTR_PWM(4), 1179 SENSOR_ATTR_PWM(5), 1180 SENSOR_ATTR_PWM(6), 1181 SENSOR_ATTR_PWM(7), 1182 SENSOR_ATTR_PWM(8), 1183 }; 1184 1185 static struct sensor_device_attribute_2 w83793_vid[] = { 1186 SENSOR_ATTR_2(cpu0_vid, S_IRUGO, show_vid, NULL, NOT_USED, 0), 1187 SENSOR_ATTR_2(cpu1_vid, S_IRUGO, show_vid, NULL, NOT_USED, 1), 1188 }; 1189 static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, store_vrm); 1190 1191 static struct sensor_device_attribute_2 sda_single_files[] = { 1192 SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep, 1193 store_chassis_clear_legacy, ALARM_STATUS, 30), 1194 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep, 1195 store_chassis_clear, ALARM_STATUS, 30), 1196 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable, 1197 store_beep_enable, NOT_USED, NOT_USED), 1198 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, 1199 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), 1200 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, 1201 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), 1202 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, 1203 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), 1204 SENSOR_ATTR_2(temp_critical, S_IWUSR | S_IRUGO, show_sf_setup, 1205 store_sf_setup, SETUP_TEMP_CRITICAL, NOT_USED), 1206 }; 1207 1208 static void w83793_init_client(struct i2c_client *client) 1209 { 1210 if (reset) 1211 w83793_write_value(client, W83793_REG_CONFIG, 0x80); 1212 1213 /* Start monitoring */ 1214 w83793_write_value(client, W83793_REG_CONFIG, 1215 w83793_read_value(client, W83793_REG_CONFIG) | 0x01); 1216 } 1217 1218 /* 1219 * Watchdog routines 1220 */ 1221 1222 static int watchdog_set_timeout(struct w83793_data *data, int timeout) 1223 { 1224 int ret, mtimeout; 1225 1226 mtimeout = DIV_ROUND_UP(timeout, 60); 1227 1228 if (mtimeout > 255) 1229 return -EINVAL; 1230 1231 mutex_lock(&data->watchdog_lock); 1232 if (!data->client) { 1233 ret = -ENODEV; 1234 goto leave; 1235 } 1236 1237 data->watchdog_timeout = mtimeout; 1238 1239 /* Set Timeout value (in Minutes) */ 1240 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, 1241 data->watchdog_timeout); 1242 1243 ret = mtimeout * 60; 1244 1245 leave: 1246 mutex_unlock(&data->watchdog_lock); 1247 return ret; 1248 } 1249 1250 static int watchdog_get_timeout(struct w83793_data *data) 1251 { 1252 int timeout; 1253 1254 mutex_lock(&data->watchdog_lock); 1255 timeout = data->watchdog_timeout * 60; 1256 mutex_unlock(&data->watchdog_lock); 1257 1258 return timeout; 1259 } 1260 1261 static int watchdog_trigger(struct w83793_data *data) 1262 { 1263 int ret = 0; 1264 1265 mutex_lock(&data->watchdog_lock); 1266 if (!data->client) { 1267 ret = -ENODEV; 1268 goto leave; 1269 } 1270 1271 /* Set Timeout value (in Minutes) */ 1272 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, 1273 data->watchdog_timeout); 1274 1275 leave: 1276 mutex_unlock(&data->watchdog_lock); 1277 return ret; 1278 } 1279 1280 static int watchdog_enable(struct w83793_data *data) 1281 { 1282 int ret = 0; 1283 1284 mutex_lock(&data->watchdog_lock); 1285 if (!data->client) { 1286 ret = -ENODEV; 1287 goto leave; 1288 } 1289 1290 /* Set initial timeout */ 1291 w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, 1292 data->watchdog_timeout); 1293 1294 /* Enable Soft Watchdog */ 1295 w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0x55); 1296 1297 leave: 1298 mutex_unlock(&data->watchdog_lock); 1299 return ret; 1300 } 1301 1302 static int watchdog_disable(struct w83793_data *data) 1303 { 1304 int ret = 0; 1305 1306 mutex_lock(&data->watchdog_lock); 1307 if (!data->client) { 1308 ret = -ENODEV; 1309 goto leave; 1310 } 1311 1312 /* Disable Soft Watchdog */ 1313 w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0xAA); 1314 1315 leave: 1316 mutex_unlock(&data->watchdog_lock); 1317 return ret; 1318 } 1319 1320 static int watchdog_open(struct inode *inode, struct file *filp) 1321 { 1322 struct w83793_data *pos, *data = NULL; 1323 int watchdog_is_open; 1324 1325 /* 1326 * We get called from drivers/char/misc.c with misc_mtx hold, and we 1327 * call misc_register() from w83793_probe() with watchdog_data_mutex 1328 * hold, as misc_register() takes the misc_mtx lock, this is a possible 1329 * deadlock, so we use mutex_trylock here. 1330 */ 1331 if (!mutex_trylock(&watchdog_data_mutex)) 1332 return -ERESTARTSYS; 1333 list_for_each_entry(pos, &watchdog_data_list, list) { 1334 if (pos->watchdog_miscdev.minor == iminor(inode)) { 1335 data = pos; 1336 break; 1337 } 1338 } 1339 1340 /* Check, if device is already open */ 1341 watchdog_is_open = test_and_set_bit(0, &data->watchdog_is_open); 1342 1343 /* 1344 * Increase data reference counter (if not already done). 1345 * Note we can never not have found data, so we don't check for this 1346 */ 1347 if (!watchdog_is_open) 1348 kref_get(&data->kref); 1349 1350 mutex_unlock(&watchdog_data_mutex); 1351 1352 /* Check, if device is already open and possibly issue error */ 1353 if (watchdog_is_open) 1354 return -EBUSY; 1355 1356 /* Enable Soft Watchdog */ 1357 watchdog_enable(data); 1358 1359 /* Store pointer to data into filp's private data */ 1360 filp->private_data = data; 1361 1362 return nonseekable_open(inode, filp); 1363 } 1364 1365 static int watchdog_close(struct inode *inode, struct file *filp) 1366 { 1367 struct w83793_data *data = filp->private_data; 1368 1369 if (data->watchdog_expect_close) { 1370 watchdog_disable(data); 1371 data->watchdog_expect_close = 0; 1372 } else { 1373 watchdog_trigger(data); 1374 dev_crit(&data->client->dev, 1375 "unexpected close, not stopping watchdog!\n"); 1376 } 1377 1378 clear_bit(0, &data->watchdog_is_open); 1379 1380 /* Decrease data reference counter */ 1381 mutex_lock(&watchdog_data_mutex); 1382 kref_put(&data->kref, w83793_release_resources); 1383 mutex_unlock(&watchdog_data_mutex); 1384 1385 return 0; 1386 } 1387 1388 static ssize_t watchdog_write(struct file *filp, const char __user *buf, 1389 size_t count, loff_t *offset) 1390 { 1391 ssize_t ret; 1392 struct w83793_data *data = filp->private_data; 1393 1394 if (count) { 1395 if (!nowayout) { 1396 size_t i; 1397 1398 /* Clear it in case it was set with a previous write */ 1399 data->watchdog_expect_close = 0; 1400 1401 for (i = 0; i != count; i++) { 1402 char c; 1403 if (get_user(c, buf + i)) 1404 return -EFAULT; 1405 if (c == 'V') 1406 data->watchdog_expect_close = 1; 1407 } 1408 } 1409 ret = watchdog_trigger(data); 1410 if (ret < 0) 1411 return ret; 1412 } 1413 return count; 1414 } 1415 1416 static long watchdog_ioctl(struct file *filp, unsigned int cmd, 1417 unsigned long arg) 1418 { 1419 struct watchdog_info ident = { 1420 .options = WDIOF_KEEPALIVEPING | 1421 WDIOF_SETTIMEOUT | 1422 WDIOF_CARDRESET, 1423 .identity = "w83793 watchdog" 1424 }; 1425 1426 int val, ret = 0; 1427 struct w83793_data *data = filp->private_data; 1428 1429 switch (cmd) { 1430 case WDIOC_GETSUPPORT: 1431 if (!nowayout) 1432 ident.options |= WDIOF_MAGICCLOSE; 1433 if (copy_to_user((void __user *)arg, &ident, sizeof(ident))) 1434 ret = -EFAULT; 1435 break; 1436 1437 case WDIOC_GETSTATUS: 1438 val = data->watchdog_caused_reboot ? WDIOF_CARDRESET : 0; 1439 ret = put_user(val, (int __user *)arg); 1440 break; 1441 1442 case WDIOC_GETBOOTSTATUS: 1443 ret = put_user(0, (int __user *)arg); 1444 break; 1445 1446 case WDIOC_KEEPALIVE: 1447 ret = watchdog_trigger(data); 1448 break; 1449 1450 case WDIOC_GETTIMEOUT: 1451 val = watchdog_get_timeout(data); 1452 ret = put_user(val, (int __user *)arg); 1453 break; 1454 1455 case WDIOC_SETTIMEOUT: 1456 if (get_user(val, (int __user *)arg)) { 1457 ret = -EFAULT; 1458 break; 1459 } 1460 ret = watchdog_set_timeout(data, val); 1461 if (ret > 0) 1462 ret = put_user(ret, (int __user *)arg); 1463 break; 1464 1465 case WDIOC_SETOPTIONS: 1466 if (get_user(val, (int __user *)arg)) { 1467 ret = -EFAULT; 1468 break; 1469 } 1470 1471 if (val & WDIOS_DISABLECARD) 1472 ret = watchdog_disable(data); 1473 else if (val & WDIOS_ENABLECARD) 1474 ret = watchdog_enable(data); 1475 else 1476 ret = -EINVAL; 1477 1478 break; 1479 default: 1480 ret = -ENOTTY; 1481 } 1482 return ret; 1483 } 1484 1485 static const struct file_operations watchdog_fops = { 1486 .owner = THIS_MODULE, 1487 .llseek = no_llseek, 1488 .open = watchdog_open, 1489 .release = watchdog_close, 1490 .write = watchdog_write, 1491 .unlocked_ioctl = watchdog_ioctl, 1492 }; 1493 1494 /* 1495 * Notifier for system down 1496 */ 1497 1498 static int watchdog_notify_sys(struct notifier_block *this, unsigned long code, 1499 void *unused) 1500 { 1501 struct w83793_data *data = NULL; 1502 1503 if (code == SYS_DOWN || code == SYS_HALT) { 1504 1505 /* Disable each registered watchdog */ 1506 mutex_lock(&watchdog_data_mutex); 1507 list_for_each_entry(data, &watchdog_data_list, list) { 1508 if (data->watchdog_miscdev.minor) 1509 watchdog_disable(data); 1510 } 1511 mutex_unlock(&watchdog_data_mutex); 1512 } 1513 1514 return NOTIFY_DONE; 1515 } 1516 1517 /* 1518 * The WDT needs to learn about soft shutdowns in order to 1519 * turn the timebomb registers off. 1520 */ 1521 1522 static struct notifier_block watchdog_notifier = { 1523 .notifier_call = watchdog_notify_sys, 1524 }; 1525 1526 /* 1527 * Init / remove routines 1528 */ 1529 1530 static int w83793_remove(struct i2c_client *client) 1531 { 1532 struct w83793_data *data = i2c_get_clientdata(client); 1533 struct device *dev = &client->dev; 1534 int i, tmp; 1535 1536 /* Unregister the watchdog (if registered) */ 1537 if (data->watchdog_miscdev.minor) { 1538 misc_deregister(&data->watchdog_miscdev); 1539 1540 if (data->watchdog_is_open) { 1541 dev_warn(&client->dev, 1542 "i2c client detached with watchdog open! " 1543 "Stopping watchdog.\n"); 1544 watchdog_disable(data); 1545 } 1546 1547 mutex_lock(&watchdog_data_mutex); 1548 list_del(&data->list); 1549 mutex_unlock(&watchdog_data_mutex); 1550 1551 /* Tell the watchdog code the client is gone */ 1552 mutex_lock(&data->watchdog_lock); 1553 data->client = NULL; 1554 mutex_unlock(&data->watchdog_lock); 1555 } 1556 1557 /* Reset Configuration Register to Disable Watch Dog Registers */ 1558 tmp = w83793_read_value(client, W83793_REG_CONFIG); 1559 w83793_write_value(client, W83793_REG_CONFIG, tmp & ~0x04); 1560 1561 unregister_reboot_notifier(&watchdog_notifier); 1562 1563 hwmon_device_unregister(data->hwmon_dev); 1564 1565 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) 1566 device_remove_file(dev, 1567 &w83793_sensor_attr_2[i].dev_attr); 1568 1569 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) 1570 device_remove_file(dev, &sda_single_files[i].dev_attr); 1571 1572 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) 1573 device_remove_file(dev, &w83793_vid[i].dev_attr); 1574 device_remove_file(dev, &dev_attr_vrm); 1575 1576 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++) 1577 device_remove_file(dev, &w83793_left_fan[i].dev_attr); 1578 1579 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++) 1580 device_remove_file(dev, &w83793_left_pwm[i].dev_attr); 1581 1582 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++) 1583 device_remove_file(dev, &w83793_temp[i].dev_attr); 1584 1585 if (data->lm75[0] != NULL) 1586 i2c_unregister_device(data->lm75[0]); 1587 if (data->lm75[1] != NULL) 1588 i2c_unregister_device(data->lm75[1]); 1589 1590 /* Decrease data reference counter */ 1591 mutex_lock(&watchdog_data_mutex); 1592 kref_put(&data->kref, w83793_release_resources); 1593 mutex_unlock(&watchdog_data_mutex); 1594 1595 return 0; 1596 } 1597 1598 static int 1599 w83793_detect_subclients(struct i2c_client *client) 1600 { 1601 int i, id, err; 1602 int address = client->addr; 1603 u8 tmp; 1604 struct i2c_adapter *adapter = client->adapter; 1605 struct w83793_data *data = i2c_get_clientdata(client); 1606 1607 id = i2c_adapter_id(adapter); 1608 if (force_subclients[0] == id && force_subclients[1] == address) { 1609 for (i = 2; i <= 3; i++) { 1610 if (force_subclients[i] < 0x48 1611 || force_subclients[i] > 0x4f) { 1612 dev_err(&client->dev, 1613 "invalid subclient " 1614 "address %d; must be 0x48-0x4f\n", 1615 force_subclients[i]); 1616 err = -EINVAL; 1617 goto ERROR_SC_0; 1618 } 1619 } 1620 w83793_write_value(client, W83793_REG_I2C_SUBADDR, 1621 (force_subclients[2] & 0x07) | 1622 ((force_subclients[3] & 0x07) << 4)); 1623 } 1624 1625 tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR); 1626 if (!(tmp & 0x08)) 1627 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (tmp & 0x7)); 1628 if (!(tmp & 0x80)) { 1629 if ((data->lm75[0] != NULL) 1630 && ((tmp & 0x7) == ((tmp >> 4) & 0x7))) { 1631 dev_err(&client->dev, 1632 "duplicate addresses 0x%x, " 1633 "use force_subclients\n", data->lm75[0]->addr); 1634 err = -ENODEV; 1635 goto ERROR_SC_1; 1636 } 1637 data->lm75[1] = i2c_new_dummy(adapter, 1638 0x48 + ((tmp >> 4) & 0x7)); 1639 } 1640 1641 return 0; 1642 1643 /* Undo inits in case of errors */ 1644 1645 ERROR_SC_1: 1646 if (data->lm75[0] != NULL) 1647 i2c_unregister_device(data->lm75[0]); 1648 ERROR_SC_0: 1649 return err; 1650 } 1651 1652 /* Return 0 if detection is successful, -ENODEV otherwise */ 1653 static int w83793_detect(struct i2c_client *client, 1654 struct i2c_board_info *info) 1655 { 1656 u8 tmp, bank, chip_id; 1657 struct i2c_adapter *adapter = client->adapter; 1658 unsigned short address = client->addr; 1659 1660 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1661 return -ENODEV; 1662 1663 bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL); 1664 1665 tmp = bank & 0x80 ? 0x5c : 0xa3; 1666 /* Check Winbond vendor ID */ 1667 if (tmp != i2c_smbus_read_byte_data(client, W83793_REG_VENDORID)) { 1668 pr_debug("w83793: Detection failed at check vendor id\n"); 1669 return -ENODEV; 1670 } 1671 1672 /* 1673 * If Winbond chip, address of chip and W83793_REG_I2C_ADDR 1674 * should match 1675 */ 1676 if ((bank & 0x07) == 0 1677 && i2c_smbus_read_byte_data(client, W83793_REG_I2C_ADDR) != 1678 (address << 1)) { 1679 pr_debug("w83793: Detection failed at check i2c addr\n"); 1680 return -ENODEV; 1681 } 1682 1683 /* Determine the chip type now */ 1684 chip_id = i2c_smbus_read_byte_data(client, W83793_REG_CHIPID); 1685 if (chip_id != 0x7b) 1686 return -ENODEV; 1687 1688 strlcpy(info->type, "w83793", I2C_NAME_SIZE); 1689 1690 return 0; 1691 } 1692 1693 static int w83793_probe(struct i2c_client *client, 1694 const struct i2c_device_id *id) 1695 { 1696 struct device *dev = &client->dev; 1697 const int watchdog_minors[] = { WATCHDOG_MINOR, 212, 213, 214, 215 }; 1698 struct w83793_data *data; 1699 int i, tmp, val, err; 1700 int files_fan = ARRAY_SIZE(w83793_left_fan) / 7; 1701 int files_pwm = ARRAY_SIZE(w83793_left_pwm) / 5; 1702 int files_temp = ARRAY_SIZE(w83793_temp) / 6; 1703 1704 data = kzalloc(sizeof(struct w83793_data), GFP_KERNEL); 1705 if (!data) { 1706 err = -ENOMEM; 1707 goto exit; 1708 } 1709 1710 i2c_set_clientdata(client, data); 1711 data->bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL); 1712 mutex_init(&data->update_lock); 1713 mutex_init(&data->watchdog_lock); 1714 INIT_LIST_HEAD(&data->list); 1715 kref_init(&data->kref); 1716 1717 /* 1718 * Store client pointer in our data struct for watchdog usage 1719 * (where the client is found through a data ptr instead of the 1720 * otherway around) 1721 */ 1722 data->client = client; 1723 1724 err = w83793_detect_subclients(client); 1725 if (err) 1726 goto free_mem; 1727 1728 /* Initialize the chip */ 1729 w83793_init_client(client); 1730 1731 /* 1732 * Only fan 1-5 has their own input pins, 1733 * Pwm 1-3 has their own pins 1734 */ 1735 data->has_fan = 0x1f; 1736 data->has_pwm = 0x07; 1737 tmp = w83793_read_value(client, W83793_REG_MFC); 1738 val = w83793_read_value(client, W83793_REG_FANIN_CTRL); 1739 1740 /* check the function of pins 49-56 */ 1741 if (tmp & 0x80) { 1742 data->has_vid |= 0x2; /* has VIDB */ 1743 } else { 1744 data->has_pwm |= 0x18; /* pwm 4,5 */ 1745 if (val & 0x01) { /* fan 6 */ 1746 data->has_fan |= 0x20; 1747 data->has_pwm |= 0x20; 1748 } 1749 if (val & 0x02) { /* fan 7 */ 1750 data->has_fan |= 0x40; 1751 data->has_pwm |= 0x40; 1752 } 1753 if (!(tmp & 0x40) && (val & 0x04)) { /* fan 8 */ 1754 data->has_fan |= 0x80; 1755 data->has_pwm |= 0x80; 1756 } 1757 } 1758 1759 /* check the function of pins 37-40 */ 1760 if (!(tmp & 0x29)) 1761 data->has_vid |= 0x1; /* has VIDA */ 1762 if (0x08 == (tmp & 0x0c)) { 1763 if (val & 0x08) /* fan 9 */ 1764 data->has_fan |= 0x100; 1765 if (val & 0x10) /* fan 10 */ 1766 data->has_fan |= 0x200; 1767 } 1768 if (0x20 == (tmp & 0x30)) { 1769 if (val & 0x20) /* fan 11 */ 1770 data->has_fan |= 0x400; 1771 if (val & 0x40) /* fan 12 */ 1772 data->has_fan |= 0x800; 1773 } 1774 1775 if ((tmp & 0x01) && (val & 0x04)) { /* fan 8, second location */ 1776 data->has_fan |= 0x80; 1777 data->has_pwm |= 0x80; 1778 } 1779 1780 tmp = w83793_read_value(client, W83793_REG_FANIN_SEL); 1781 if ((tmp & 0x01) && (val & 0x08)) { /* fan 9, second location */ 1782 data->has_fan |= 0x100; 1783 } 1784 if ((tmp & 0x02) && (val & 0x10)) { /* fan 10, second location */ 1785 data->has_fan |= 0x200; 1786 } 1787 if ((tmp & 0x04) && (val & 0x20)) { /* fan 11, second location */ 1788 data->has_fan |= 0x400; 1789 } 1790 if ((tmp & 0x08) && (val & 0x40)) { /* fan 12, second location */ 1791 data->has_fan |= 0x800; 1792 } 1793 1794 /* check the temp1-6 mode, ignore former AMDSI selected inputs */ 1795 tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[0]); 1796 if (tmp & 0x01) 1797 data->has_temp |= 0x01; 1798 if (tmp & 0x04) 1799 data->has_temp |= 0x02; 1800 if (tmp & 0x10) 1801 data->has_temp |= 0x04; 1802 if (tmp & 0x40) 1803 data->has_temp |= 0x08; 1804 1805 tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[1]); 1806 if (tmp & 0x01) 1807 data->has_temp |= 0x10; 1808 if (tmp & 0x02) 1809 data->has_temp |= 0x20; 1810 1811 /* Register sysfs hooks */ 1812 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) { 1813 err = device_create_file(dev, 1814 &w83793_sensor_attr_2[i].dev_attr); 1815 if (err) 1816 goto exit_remove; 1817 } 1818 1819 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) { 1820 if (!(data->has_vid & (1 << i))) 1821 continue; 1822 err = device_create_file(dev, &w83793_vid[i].dev_attr); 1823 if (err) 1824 goto exit_remove; 1825 } 1826 if (data->has_vid) { 1827 data->vrm = vid_which_vrm(); 1828 err = device_create_file(dev, &dev_attr_vrm); 1829 if (err) 1830 goto exit_remove; 1831 } 1832 1833 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { 1834 err = device_create_file(dev, &sda_single_files[i].dev_attr); 1835 if (err) 1836 goto exit_remove; 1837 1838 } 1839 1840 for (i = 0; i < 6; i++) { 1841 int j; 1842 if (!(data->has_temp & (1 << i))) 1843 continue; 1844 for (j = 0; j < files_temp; j++) { 1845 err = device_create_file(dev, 1846 &w83793_temp[(i) * files_temp 1847 + j].dev_attr); 1848 if (err) 1849 goto exit_remove; 1850 } 1851 } 1852 1853 for (i = 5; i < 12; i++) { 1854 int j; 1855 if (!(data->has_fan & (1 << i))) 1856 continue; 1857 for (j = 0; j < files_fan; j++) { 1858 err = device_create_file(dev, 1859 &w83793_left_fan[(i - 5) * files_fan 1860 + j].dev_attr); 1861 if (err) 1862 goto exit_remove; 1863 } 1864 } 1865 1866 for (i = 3; i < 8; i++) { 1867 int j; 1868 if (!(data->has_pwm & (1 << i))) 1869 continue; 1870 for (j = 0; j < files_pwm; j++) { 1871 err = device_create_file(dev, 1872 &w83793_left_pwm[(i - 3) * files_pwm 1873 + j].dev_attr); 1874 if (err) 1875 goto exit_remove; 1876 } 1877 } 1878 1879 data->hwmon_dev = hwmon_device_register(dev); 1880 if (IS_ERR(data->hwmon_dev)) { 1881 err = PTR_ERR(data->hwmon_dev); 1882 goto exit_remove; 1883 } 1884 1885 /* Watchdog initialization */ 1886 1887 /* Register boot notifier */ 1888 err = register_reboot_notifier(&watchdog_notifier); 1889 if (err != 0) { 1890 dev_err(&client->dev, 1891 "cannot register reboot notifier (err=%d)\n", err); 1892 goto exit_devunreg; 1893 } 1894 1895 /* 1896 * Enable Watchdog registers. 1897 * Set Configuration Register to Enable Watch Dog Registers 1898 * (Bit 2) = XXXX, X1XX. 1899 */ 1900 tmp = w83793_read_value(client, W83793_REG_CONFIG); 1901 w83793_write_value(client, W83793_REG_CONFIG, tmp | 0x04); 1902 1903 /* Set the default watchdog timeout */ 1904 data->watchdog_timeout = timeout; 1905 1906 /* Check, if last reboot was caused by watchdog */ 1907 data->watchdog_caused_reboot = 1908 w83793_read_value(data->client, W83793_REG_WDT_STATUS) & 0x01; 1909 1910 /* Disable Soft Watchdog during initialiation */ 1911 watchdog_disable(data); 1912 1913 /* 1914 * We take the data_mutex lock early so that watchdog_open() cannot 1915 * run when misc_register() has completed, but we've not yet added 1916 * our data to the watchdog_data_list (and set the default timeout) 1917 */ 1918 mutex_lock(&watchdog_data_mutex); 1919 for (i = 0; i < ARRAY_SIZE(watchdog_minors); i++) { 1920 /* Register our watchdog part */ 1921 snprintf(data->watchdog_name, sizeof(data->watchdog_name), 1922 "watchdog%c", (i == 0) ? '\0' : ('0' + i)); 1923 data->watchdog_miscdev.name = data->watchdog_name; 1924 data->watchdog_miscdev.fops = &watchdog_fops; 1925 data->watchdog_miscdev.minor = watchdog_minors[i]; 1926 1927 err = misc_register(&data->watchdog_miscdev); 1928 if (err == -EBUSY) 1929 continue; 1930 if (err) { 1931 data->watchdog_miscdev.minor = 0; 1932 dev_err(&client->dev, 1933 "Registering watchdog chardev: %d\n", err); 1934 break; 1935 } 1936 1937 list_add(&data->list, &watchdog_data_list); 1938 1939 dev_info(&client->dev, 1940 "Registered watchdog chardev major 10, minor: %d\n", 1941 watchdog_minors[i]); 1942 break; 1943 } 1944 if (i == ARRAY_SIZE(watchdog_minors)) { 1945 data->watchdog_miscdev.minor = 0; 1946 dev_warn(&client->dev, "Couldn't register watchdog chardev " 1947 "(due to no free minor)\n"); 1948 } 1949 1950 mutex_unlock(&watchdog_data_mutex); 1951 1952 return 0; 1953 1954 /* Unregister hwmon device */ 1955 1956 exit_devunreg: 1957 1958 hwmon_device_unregister(data->hwmon_dev); 1959 1960 /* Unregister sysfs hooks */ 1961 1962 exit_remove: 1963 for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) 1964 device_remove_file(dev, &w83793_sensor_attr_2[i].dev_attr); 1965 1966 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) 1967 device_remove_file(dev, &sda_single_files[i].dev_attr); 1968 1969 for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) 1970 device_remove_file(dev, &w83793_vid[i].dev_attr); 1971 1972 for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++) 1973 device_remove_file(dev, &w83793_left_fan[i].dev_attr); 1974 1975 for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++) 1976 device_remove_file(dev, &w83793_left_pwm[i].dev_attr); 1977 1978 for (i = 0; i < ARRAY_SIZE(w83793_temp); i++) 1979 device_remove_file(dev, &w83793_temp[i].dev_attr); 1980 1981 if (data->lm75[0] != NULL) 1982 i2c_unregister_device(data->lm75[0]); 1983 if (data->lm75[1] != NULL) 1984 i2c_unregister_device(data->lm75[1]); 1985 free_mem: 1986 kfree(data); 1987 exit: 1988 return err; 1989 } 1990 1991 static void w83793_update_nonvolatile(struct device *dev) 1992 { 1993 struct i2c_client *client = to_i2c_client(dev); 1994 struct w83793_data *data = i2c_get_clientdata(client); 1995 int i, j; 1996 /* 1997 * They are somewhat "stable" registers, and to update them every time 1998 * takes so much time, it's just not worthy. Update them in a long 1999 * interval to avoid exception. 2000 */ 2001 if (!(time_after(jiffies, data->last_nonvolatile + HZ * 300) 2002 || !data->valid)) 2003 return; 2004 /* update voltage limits */ 2005 for (i = 1; i < 3; i++) { 2006 for (j = 0; j < ARRAY_SIZE(data->in); j++) { 2007 data->in[j][i] = 2008 w83793_read_value(client, W83793_REG_IN[j][i]); 2009 } 2010 data->in_low_bits[i] = 2011 w83793_read_value(client, W83793_REG_IN_LOW_BITS[i]); 2012 } 2013 2014 for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) { 2015 /* Update the Fan measured value and limits */ 2016 if (!(data->has_fan & (1 << i))) 2017 continue; 2018 data->fan_min[i] = 2019 w83793_read_value(client, W83793_REG_FAN_MIN(i)) << 8; 2020 data->fan_min[i] |= 2021 w83793_read_value(client, W83793_REG_FAN_MIN(i) + 1); 2022 } 2023 2024 for (i = 0; i < ARRAY_SIZE(data->temp_fan_map); i++) { 2025 if (!(data->has_temp & (1 << i))) 2026 continue; 2027 data->temp_fan_map[i] = 2028 w83793_read_value(client, W83793_REG_TEMP_FAN_MAP(i)); 2029 for (j = 1; j < 5; j++) { 2030 data->temp[i][j] = 2031 w83793_read_value(client, W83793_REG_TEMP[i][j]); 2032 } 2033 data->temp_cruise[i] = 2034 w83793_read_value(client, W83793_REG_TEMP_CRUISE(i)); 2035 for (j = 0; j < 7; j++) { 2036 data->sf2_pwm[i][j] = 2037 w83793_read_value(client, W83793_REG_SF2_PWM(i, j)); 2038 data->sf2_temp[i][j] = 2039 w83793_read_value(client, 2040 W83793_REG_SF2_TEMP(i, j)); 2041 } 2042 } 2043 2044 for (i = 0; i < ARRAY_SIZE(data->temp_mode); i++) 2045 data->temp_mode[i] = 2046 w83793_read_value(client, W83793_REG_TEMP_MODE[i]); 2047 2048 for (i = 0; i < ARRAY_SIZE(data->tolerance); i++) { 2049 data->tolerance[i] = 2050 w83793_read_value(client, W83793_REG_TEMP_TOL(i)); 2051 } 2052 2053 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) { 2054 if (!(data->has_pwm & (1 << i))) 2055 continue; 2056 data->pwm[i][PWM_NONSTOP] = 2057 w83793_read_value(client, W83793_REG_PWM(i, PWM_NONSTOP)); 2058 data->pwm[i][PWM_START] = 2059 w83793_read_value(client, W83793_REG_PWM(i, PWM_START)); 2060 data->pwm_stop_time[i] = 2061 w83793_read_value(client, W83793_REG_PWM_STOP_TIME(i)); 2062 } 2063 2064 data->pwm_default = w83793_read_value(client, W83793_REG_PWM_DEFAULT); 2065 data->pwm_enable = w83793_read_value(client, W83793_REG_PWM_ENABLE); 2066 data->pwm_uptime = w83793_read_value(client, W83793_REG_PWM_UPTIME); 2067 data->pwm_downtime = w83793_read_value(client, W83793_REG_PWM_DOWNTIME); 2068 data->temp_critical = 2069 w83793_read_value(client, W83793_REG_TEMP_CRITICAL); 2070 data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP); 2071 2072 for (i = 0; i < ARRAY_SIZE(data->beeps); i++) 2073 data->beeps[i] = w83793_read_value(client, W83793_REG_BEEP(i)); 2074 2075 data->last_nonvolatile = jiffies; 2076 } 2077 2078 static struct w83793_data *w83793_update_device(struct device *dev) 2079 { 2080 struct i2c_client *client = to_i2c_client(dev); 2081 struct w83793_data *data = i2c_get_clientdata(client); 2082 int i; 2083 2084 mutex_lock(&data->update_lock); 2085 2086 if (!(time_after(jiffies, data->last_updated + HZ * 2) 2087 || !data->valid)) 2088 goto END; 2089 2090 /* Update the voltages measured value and limits */ 2091 for (i = 0; i < ARRAY_SIZE(data->in); i++) 2092 data->in[i][IN_READ] = 2093 w83793_read_value(client, W83793_REG_IN[i][IN_READ]); 2094 2095 data->in_low_bits[IN_READ] = 2096 w83793_read_value(client, W83793_REG_IN_LOW_BITS[IN_READ]); 2097 2098 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 2099 if (!(data->has_fan & (1 << i))) 2100 continue; 2101 data->fan[i] = 2102 w83793_read_value(client, W83793_REG_FAN(i)) << 8; 2103 data->fan[i] |= 2104 w83793_read_value(client, W83793_REG_FAN(i) + 1); 2105 } 2106 2107 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 2108 if (!(data->has_temp & (1 << i))) 2109 continue; 2110 data->temp[i][TEMP_READ] = 2111 w83793_read_value(client, W83793_REG_TEMP[i][TEMP_READ]); 2112 } 2113 2114 data->temp_low_bits = 2115 w83793_read_value(client, W83793_REG_TEMP_LOW_BITS); 2116 2117 for (i = 0; i < ARRAY_SIZE(data->pwm); i++) { 2118 if (data->has_pwm & (1 << i)) 2119 data->pwm[i][PWM_DUTY] = 2120 w83793_read_value(client, 2121 W83793_REG_PWM(i, PWM_DUTY)); 2122 } 2123 2124 for (i = 0; i < ARRAY_SIZE(data->alarms); i++) 2125 data->alarms[i] = 2126 w83793_read_value(client, W83793_REG_ALARM(i)); 2127 if (data->has_vid & 0x01) 2128 data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA); 2129 if (data->has_vid & 0x02) 2130 data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB); 2131 w83793_update_nonvolatile(dev); 2132 data->last_updated = jiffies; 2133 data->valid = 1; 2134 2135 END: 2136 mutex_unlock(&data->update_lock); 2137 return data; 2138 } 2139 2140 /* 2141 * Ignore the possibility that somebody change bank outside the driver 2142 * Must be called with data->update_lock held, except during initialization 2143 */ 2144 static u8 w83793_read_value(struct i2c_client *client, u16 reg) 2145 { 2146 struct w83793_data *data = i2c_get_clientdata(client); 2147 u8 res = 0xff; 2148 u8 new_bank = reg >> 8; 2149 2150 new_bank |= data->bank & 0xfc; 2151 if (data->bank != new_bank) { 2152 if (i2c_smbus_write_byte_data 2153 (client, W83793_REG_BANKSEL, new_bank) >= 0) 2154 data->bank = new_bank; 2155 else { 2156 dev_err(&client->dev, 2157 "set bank to %d failed, fall back " 2158 "to bank %d, read reg 0x%x error\n", 2159 new_bank, data->bank, reg); 2160 res = 0x0; /* read 0x0 from the chip */ 2161 goto END; 2162 } 2163 } 2164 res = i2c_smbus_read_byte_data(client, reg & 0xff); 2165 END: 2166 return res; 2167 } 2168 2169 /* Must be called with data->update_lock held, except during initialization */ 2170 static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value) 2171 { 2172 struct w83793_data *data = i2c_get_clientdata(client); 2173 int res; 2174 u8 new_bank = reg >> 8; 2175 2176 new_bank |= data->bank & 0xfc; 2177 if (data->bank != new_bank) { 2178 res = i2c_smbus_write_byte_data(client, W83793_REG_BANKSEL, 2179 new_bank); 2180 if (res < 0) { 2181 dev_err(&client->dev, 2182 "set bank to %d failed, fall back " 2183 "to bank %d, write reg 0x%x error\n", 2184 new_bank, data->bank, reg); 2185 goto END; 2186 } 2187 data->bank = new_bank; 2188 } 2189 2190 res = i2c_smbus_write_byte_data(client, reg & 0xff, value); 2191 END: 2192 return res; 2193 } 2194 2195 module_i2c_driver(w83793_driver); 2196 2197 MODULE_AUTHOR("Yuan Mu, Sven Anders"); 2198 MODULE_DESCRIPTION("w83793 driver"); 2199 MODULE_LICENSE("GPL"); 2200