vt1211.c revision 86855b0c1fd75338c67cabbf85d64d033612c47b
1/* 2 * vt1211.c - driver for the VIA VT1211 Super-I/O chip integrated hardware 3 * monitoring features 4 * Copyright (C) 2006 Juerg Haefliger <juergh@gmail.com> 5 * 6 * This driver is based on the driver for kernel 2.4 by Mark D. Studebaker 7 * and its port to kernel 2.6 by Lars Ekman. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 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/platform_device.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/ioport.h> 35#include <linux/acpi.h> 36#include <linux/io.h> 37 38static int uch_config = -1; 39module_param(uch_config, int, 0); 40MODULE_PARM_DESC(uch_config, "Initialize the universal channel configuration"); 41 42static int int_mode = -1; 43module_param(int_mode, int, 0); 44MODULE_PARM_DESC(int_mode, "Force the temperature interrupt mode"); 45 46static unsigned short force_id; 47module_param(force_id, ushort, 0); 48MODULE_PARM_DESC(force_id, "Override the detected device ID"); 49 50static struct platform_device *pdev; 51 52#define DRVNAME "vt1211" 53 54/* --------------------------------------------------------------------- 55 * Registers 56 * 57 * The sensors are defined as follows. 58 * 59 * Sensor Voltage Mode Temp Mode Notes (from the datasheet) 60 * -------- ------------ --------- -------------------------- 61 * Reading 1 temp1 Intel thermal diode 62 * Reading 3 temp2 Internal thermal diode 63 * UCH1/Reading2 in0 temp3 NTC type thermistor 64 * UCH2 in1 temp4 +2.5V 65 * UCH3 in2 temp5 VccP 66 * UCH4 in3 temp6 +5V 67 * UCH5 in4 temp7 +12V 68 * 3.3V in5 Internal VDD (+3.3V) 69 * 70 * --------------------------------------------------------------------- */ 71 72/* Voltages (in) numbered 0-5 (ix) */ 73#define VT1211_REG_IN(ix) (0x21 + (ix)) 74#define VT1211_REG_IN_MIN(ix) ((ix) == 0 ? 0x3e : 0x2a + 2 * (ix)) 75#define VT1211_REG_IN_MAX(ix) ((ix) == 0 ? 0x3d : 0x29 + 2 * (ix)) 76 77/* Temperatures (temp) numbered 0-6 (ix) */ 78static u8 regtemp[] = {0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25}; 79static u8 regtempmax[] = {0x39, 0x1d, 0x3d, 0x2b, 0x2d, 0x2f, 0x31}; 80static u8 regtemphyst[] = {0x3a, 0x1e, 0x3e, 0x2c, 0x2e, 0x30, 0x32}; 81 82/* Fans numbered 0-1 (ix) */ 83#define VT1211_REG_FAN(ix) (0x29 + (ix)) 84#define VT1211_REG_FAN_MIN(ix) (0x3b + (ix)) 85#define VT1211_REG_FAN_DIV 0x47 86 87/* PWMs numbered 0-1 (ix) */ 88/* Auto points numbered 0-3 (ap) */ 89#define VT1211_REG_PWM(ix) (0x60 + (ix)) 90#define VT1211_REG_PWM_CLK 0x50 91#define VT1211_REG_PWM_CTL 0x51 92#define VT1211_REG_PWM_AUTO_TEMP(ap) (0x55 - (ap)) 93#define VT1211_REG_PWM_AUTO_PWM(ix, ap) (0x58 + 2 * (ix) - (ap)) 94 95/* Miscellaneous registers */ 96#define VT1211_REG_CONFIG 0x40 97#define VT1211_REG_ALARM1 0x41 98#define VT1211_REG_ALARM2 0x42 99#define VT1211_REG_VID 0x45 100#define VT1211_REG_UCH_CONFIG 0x4a 101#define VT1211_REG_TEMP1_CONFIG 0x4b 102#define VT1211_REG_TEMP2_CONFIG 0x4c 103 104/* In, temp & fan alarm bits */ 105static const u8 bitalarmin[] = {11, 0, 1, 3, 8, 2, 9}; 106static const u8 bitalarmtemp[] = {4, 15, 11, 0, 1, 3, 8}; 107static const u8 bitalarmfan[] = {6, 7}; 108 109/* --------------------------------------------------------------------- 110 * Data structures and manipulation thereof 111 * --------------------------------------------------------------------- */ 112 113struct vt1211_data { 114 unsigned short addr; 115 const char *name; 116 struct device *hwmon_dev; 117 118 struct mutex update_lock; 119 char valid; /* !=0 if following fields are valid */ 120 unsigned long last_updated; /* In jiffies */ 121 122 /* Register values */ 123 u8 in[6]; 124 u8 in_max[6]; 125 u8 in_min[6]; 126 u8 temp[7]; 127 u8 temp_max[7]; 128 u8 temp_hyst[7]; 129 u8 fan[2]; 130 u8 fan_min[2]; 131 u8 fan_div[2]; 132 u8 fan_ctl; 133 u8 pwm[2]; 134 u8 pwm_ctl[2]; 135 u8 pwm_clk; 136 u8 pwm_auto_temp[4]; 137 u8 pwm_auto_pwm[2][4]; 138 u8 vid; /* Read once at init time */ 139 u8 vrm; 140 u8 uch_config; /* Read once at init time */ 141 u16 alarms; 142}; 143 144/* ix = [0-5] */ 145#define ISVOLT(ix, uch_config) ((ix) > 4 ? 1 : \ 146 !(((uch_config) >> ((ix) + 2)) & 1)) 147 148/* ix = [0-6] */ 149#define ISTEMP(ix, uch_config) ((ix) < 2 ? 1 : \ 150 ((uch_config) >> (ix)) & 1) 151 152/* in5 (ix = 5) is special. It's the internal 3.3V so it's scaled in the 153 driver according to the VT1211 BIOS porting guide */ 154#define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \ 155 (((reg) - 3) * 15882 + 479) / 958 : \ 156 (((reg) - 3) * 10000 + 479) / 958) 157#define IN_TO_REG(ix, val) (SENSORS_LIMIT((ix) == 5 ? \ 158 ((val) * 958 + 7941) / 15882 + 3 : \ 159 ((val) * 958 + 5000) / 10000 + 3, 0, 255)) 160 161/* temp1 (ix = 0) is an intel thermal diode which is scaled in user space. 162 temp2 (ix = 1) is the internal temp diode so it's scaled in the driver 163 according to some measurements that I took on an EPIA M10000. 164 temp3-7 are thermistor based so the driver returns the voltage measured at 165 the pin (range 0V - 2.2V). */ 166#define TEMP_FROM_REG(ix, reg) ((ix) == 0 ? (reg) * 1000 : \ 167 (ix) == 1 ? (reg) < 51 ? 0 : \ 168 ((reg) - 51) * 1000 : \ 169 ((253 - (reg)) * 2200 + 105) / 210) 170#define TEMP_TO_REG(ix, val) SENSORS_LIMIT( \ 171 ((ix) == 0 ? ((val) + 500) / 1000 : \ 172 (ix) == 1 ? ((val) + 500) / 1000 + 51 : \ 173 253 - ((val) * 210 + 1100) / 2200), 0, 255) 174 175#define DIV_FROM_REG(reg) (1 << (reg)) 176 177#define RPM_FROM_REG(reg, div) (((reg) == 0) || ((reg) == 255) ? 0 : \ 178 1310720 / (reg) / DIV_FROM_REG(div)) 179#define RPM_TO_REG(val, div) ((val) == 0 ? 255 : \ 180 SENSORS_LIMIT((1310720 / (val) / \ 181 DIV_FROM_REG(div)), 1, 254)) 182 183/* --------------------------------------------------------------------- 184 * Super-I/O constants and functions 185 * --------------------------------------------------------------------- */ 186 187/* Configuration index port registers 188 * The vt1211 can live at 2 different addresses so we need to probe both */ 189#define SIO_REG_CIP1 0x2e 190#define SIO_REG_CIP2 0x4e 191 192/* Configuration registers */ 193#define SIO_VT1211_LDN 0x07 /* logical device number */ 194#define SIO_VT1211_DEVID 0x20 /* device ID */ 195#define SIO_VT1211_DEVREV 0x21 /* device revision */ 196#define SIO_VT1211_ACTIVE 0x30 /* HW monitor active */ 197#define SIO_VT1211_BADDR 0x60 /* base I/O address */ 198#define SIO_VT1211_ID 0x3c /* VT1211 device ID */ 199 200/* VT1211 logical device numbers */ 201#define SIO_VT1211_LDN_HWMON 0x0b /* HW monitor */ 202 203static inline void superio_outb(int sio_cip, int reg, int val) 204{ 205 outb(reg, sio_cip); 206 outb(val, sio_cip + 1); 207} 208 209static inline int superio_inb(int sio_cip, int reg) 210{ 211 outb(reg, sio_cip); 212 return inb(sio_cip + 1); 213} 214 215static inline void superio_select(int sio_cip, int ldn) 216{ 217 outb(SIO_VT1211_LDN, sio_cip); 218 outb(ldn, sio_cip + 1); 219} 220 221static inline void superio_enter(int sio_cip) 222{ 223 outb(0x87, sio_cip); 224 outb(0x87, sio_cip); 225} 226 227static inline void superio_exit(int sio_cip) 228{ 229 outb(0xaa, sio_cip); 230} 231 232/* --------------------------------------------------------------------- 233 * Device I/O access 234 * --------------------------------------------------------------------- */ 235 236static inline u8 vt1211_read8(struct vt1211_data *data, u8 reg) 237{ 238 return inb(data->addr + reg); 239} 240 241static inline void vt1211_write8(struct vt1211_data *data, u8 reg, u8 val) 242{ 243 outb(val, data->addr + reg); 244} 245 246static struct vt1211_data *vt1211_update_device(struct device *dev) 247{ 248 struct vt1211_data *data = dev_get_drvdata(dev); 249 int ix, val; 250 251 mutex_lock(&data->update_lock); 252 253 /* registers cache is refreshed after 1 second */ 254 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 255 /* read VID */ 256 data->vid = vt1211_read8(data, VT1211_REG_VID) & 0x1f; 257 258 /* voltage (in) registers */ 259 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { 260 if (ISVOLT(ix, data->uch_config)) { 261 data->in[ix] = vt1211_read8(data, 262 VT1211_REG_IN(ix)); 263 data->in_min[ix] = vt1211_read8(data, 264 VT1211_REG_IN_MIN(ix)); 265 data->in_max[ix] = vt1211_read8(data, 266 VT1211_REG_IN_MAX(ix)); 267 } 268 } 269 270 /* temp registers */ 271 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) { 272 if (ISTEMP(ix, data->uch_config)) { 273 data->temp[ix] = vt1211_read8(data, 274 regtemp[ix]); 275 data->temp_max[ix] = vt1211_read8(data, 276 regtempmax[ix]); 277 data->temp_hyst[ix] = vt1211_read8(data, 278 regtemphyst[ix]); 279 } 280 } 281 282 /* fan & pwm registers */ 283 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) { 284 data->fan[ix] = vt1211_read8(data, 285 VT1211_REG_FAN(ix)); 286 data->fan_min[ix] = vt1211_read8(data, 287 VT1211_REG_FAN_MIN(ix)); 288 data->pwm[ix] = vt1211_read8(data, 289 VT1211_REG_PWM(ix)); 290 } 291 val = vt1211_read8(data, VT1211_REG_FAN_DIV); 292 data->fan_div[0] = (val >> 4) & 3; 293 data->fan_div[1] = (val >> 6) & 3; 294 data->fan_ctl = val & 0xf; 295 296 val = vt1211_read8(data, VT1211_REG_PWM_CTL); 297 data->pwm_ctl[0] = val & 0xf; 298 data->pwm_ctl[1] = (val >> 4) & 0xf; 299 300 data->pwm_clk = vt1211_read8(data, VT1211_REG_PWM_CLK); 301 302 /* pwm & temp auto point registers */ 303 data->pwm_auto_pwm[0][1] = vt1211_read8(data, 304 VT1211_REG_PWM_AUTO_PWM(0, 1)); 305 data->pwm_auto_pwm[0][2] = vt1211_read8(data, 306 VT1211_REG_PWM_AUTO_PWM(0, 2)); 307 data->pwm_auto_pwm[1][1] = vt1211_read8(data, 308 VT1211_REG_PWM_AUTO_PWM(1, 1)); 309 data->pwm_auto_pwm[1][2] = vt1211_read8(data, 310 VT1211_REG_PWM_AUTO_PWM(1, 2)); 311 for (ix = 0; ix < ARRAY_SIZE(data->pwm_auto_temp); ix++) { 312 data->pwm_auto_temp[ix] = vt1211_read8(data, 313 VT1211_REG_PWM_AUTO_TEMP(ix)); 314 } 315 316 /* alarm registers */ 317 data->alarms = (vt1211_read8(data, VT1211_REG_ALARM2) << 8) | 318 vt1211_read8(data, VT1211_REG_ALARM1); 319 320 data->last_updated = jiffies; 321 data->valid = 1; 322 } 323 324 mutex_unlock(&data->update_lock); 325 326 return data; 327} 328 329/* --------------------------------------------------------------------- 330 * Voltage sysfs interfaces 331 * ix = [0-5] 332 * --------------------------------------------------------------------- */ 333 334#define SHOW_IN_INPUT 0 335#define SHOW_SET_IN_MIN 1 336#define SHOW_SET_IN_MAX 2 337#define SHOW_IN_ALARM 3 338 339static ssize_t show_in(struct device *dev, struct device_attribute *attr, 340 char *buf) 341{ 342 struct vt1211_data *data = vt1211_update_device(dev); 343 struct sensor_device_attribute_2 *sensor_attr_2 = 344 to_sensor_dev_attr_2(attr); 345 int ix = sensor_attr_2->index; 346 int fn = sensor_attr_2->nr; 347 int res; 348 349 switch (fn) { 350 case SHOW_IN_INPUT: 351 res = IN_FROM_REG(ix, data->in[ix]); 352 break; 353 case SHOW_SET_IN_MIN: 354 res = IN_FROM_REG(ix, data->in_min[ix]); 355 break; 356 case SHOW_SET_IN_MAX: 357 res = IN_FROM_REG(ix, data->in_max[ix]); 358 break; 359 case SHOW_IN_ALARM: 360 res = (data->alarms >> bitalarmin[ix]) & 1; 361 break; 362 default: 363 res = 0; 364 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 365 } 366 367 return sprintf(buf, "%d\n", res); 368} 369 370static ssize_t set_in(struct device *dev, struct device_attribute *attr, 371 const char *buf, size_t count) 372{ 373 struct vt1211_data *data = dev_get_drvdata(dev); 374 struct sensor_device_attribute_2 *sensor_attr_2 = 375 to_sensor_dev_attr_2(attr); 376 int ix = sensor_attr_2->index; 377 int fn = sensor_attr_2->nr; 378 long val = simple_strtol(buf, NULL, 10); 379 380 mutex_lock(&data->update_lock); 381 switch (fn) { 382 case SHOW_SET_IN_MIN: 383 data->in_min[ix] = IN_TO_REG(ix, val); 384 vt1211_write8(data, VT1211_REG_IN_MIN(ix), data->in_min[ix]); 385 break; 386 case SHOW_SET_IN_MAX: 387 data->in_max[ix] = IN_TO_REG(ix, val); 388 vt1211_write8(data, VT1211_REG_IN_MAX(ix), data->in_max[ix]); 389 break; 390 default: 391 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 392 } 393 mutex_unlock(&data->update_lock); 394 395 return count; 396} 397 398/* --------------------------------------------------------------------- 399 * Temperature sysfs interfaces 400 * ix = [0-6] 401 * --------------------------------------------------------------------- */ 402 403#define SHOW_TEMP_INPUT 0 404#define SHOW_SET_TEMP_MAX 1 405#define SHOW_SET_TEMP_MAX_HYST 2 406#define SHOW_TEMP_ALARM 3 407 408static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 409 char *buf) 410{ 411 struct vt1211_data *data = vt1211_update_device(dev); 412 struct sensor_device_attribute_2 *sensor_attr_2 = 413 to_sensor_dev_attr_2(attr); 414 int ix = sensor_attr_2->index; 415 int fn = sensor_attr_2->nr; 416 int res; 417 418 switch (fn) { 419 case SHOW_TEMP_INPUT: 420 res = TEMP_FROM_REG(ix, data->temp[ix]); 421 break; 422 case SHOW_SET_TEMP_MAX: 423 res = TEMP_FROM_REG(ix, data->temp_max[ix]); 424 break; 425 case SHOW_SET_TEMP_MAX_HYST: 426 res = TEMP_FROM_REG(ix, data->temp_hyst[ix]); 427 break; 428 case SHOW_TEMP_ALARM: 429 res = (data->alarms >> bitalarmtemp[ix]) & 1; 430 break; 431 default: 432 res = 0; 433 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 434 } 435 436 return sprintf(buf, "%d\n", res); 437} 438 439static ssize_t set_temp(struct device *dev, struct device_attribute *attr, 440 const char *buf, size_t count) 441{ 442 struct vt1211_data *data = dev_get_drvdata(dev); 443 struct sensor_device_attribute_2 *sensor_attr_2 = 444 to_sensor_dev_attr_2(attr); 445 int ix = sensor_attr_2->index; 446 int fn = sensor_attr_2->nr; 447 long val = simple_strtol(buf, NULL, 10); 448 449 mutex_lock(&data->update_lock); 450 switch (fn) { 451 case SHOW_SET_TEMP_MAX: 452 data->temp_max[ix] = TEMP_TO_REG(ix, val); 453 vt1211_write8(data, regtempmax[ix], 454 data->temp_max[ix]); 455 break; 456 case SHOW_SET_TEMP_MAX_HYST: 457 data->temp_hyst[ix] = TEMP_TO_REG(ix, val); 458 vt1211_write8(data, regtemphyst[ix], 459 data->temp_hyst[ix]); 460 break; 461 default: 462 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 463 } 464 mutex_unlock(&data->update_lock); 465 466 return count; 467} 468 469/* --------------------------------------------------------------------- 470 * Fan sysfs interfaces 471 * ix = [0-1] 472 * --------------------------------------------------------------------- */ 473 474#define SHOW_FAN_INPUT 0 475#define SHOW_SET_FAN_MIN 1 476#define SHOW_SET_FAN_DIV 2 477#define SHOW_FAN_ALARM 3 478 479static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 480 char *buf) 481{ 482 struct vt1211_data *data = vt1211_update_device(dev); 483 struct sensor_device_attribute_2 *sensor_attr_2 = 484 to_sensor_dev_attr_2(attr); 485 int ix = sensor_attr_2->index; 486 int fn = sensor_attr_2->nr; 487 int res; 488 489 switch (fn) { 490 case SHOW_FAN_INPUT: 491 res = RPM_FROM_REG(data->fan[ix], data->fan_div[ix]); 492 break; 493 case SHOW_SET_FAN_MIN: 494 res = RPM_FROM_REG(data->fan_min[ix], data->fan_div[ix]); 495 break; 496 case SHOW_SET_FAN_DIV: 497 res = DIV_FROM_REG(data->fan_div[ix]); 498 break; 499 case SHOW_FAN_ALARM: 500 res = (data->alarms >> bitalarmfan[ix]) & 1; 501 break; 502 default: 503 res = 0; 504 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 505 } 506 507 return sprintf(buf, "%d\n", res); 508} 509 510static ssize_t set_fan(struct device *dev, struct device_attribute *attr, 511 const char *buf, size_t count) 512{ 513 struct vt1211_data *data = dev_get_drvdata(dev); 514 struct sensor_device_attribute_2 *sensor_attr_2 = 515 to_sensor_dev_attr_2(attr); 516 int ix = sensor_attr_2->index; 517 int fn = sensor_attr_2->nr; 518 long val = simple_strtol(buf, NULL, 10); 519 int reg; 520 521 mutex_lock(&data->update_lock); 522 523 /* sync the data cache */ 524 reg = vt1211_read8(data, VT1211_REG_FAN_DIV); 525 data->fan_div[0] = (reg >> 4) & 3; 526 data->fan_div[1] = (reg >> 6) & 3; 527 data->fan_ctl = reg & 0xf; 528 529 switch (fn) { 530 case SHOW_SET_FAN_MIN: 531 data->fan_min[ix] = RPM_TO_REG(val, data->fan_div[ix]); 532 vt1211_write8(data, VT1211_REG_FAN_MIN(ix), 533 data->fan_min[ix]); 534 break; 535 case SHOW_SET_FAN_DIV: 536 switch (val) { 537 case 1: data->fan_div[ix] = 0; break; 538 case 2: data->fan_div[ix] = 1; break; 539 case 4: data->fan_div[ix] = 2; break; 540 case 8: data->fan_div[ix] = 3; break; 541 default: 542 count = -EINVAL; 543 dev_warn(dev, "fan div value %ld not " 544 "supported. Choose one of 1, 2, " 545 "4, or 8.\n", val); 546 goto EXIT; 547 } 548 vt1211_write8(data, VT1211_REG_FAN_DIV, 549 ((data->fan_div[1] << 6) | 550 (data->fan_div[0] << 4) | 551 data->fan_ctl)); 552 break; 553 default: 554 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 555 } 556 557EXIT: 558 mutex_unlock(&data->update_lock); 559 return count; 560} 561 562/* --------------------------------------------------------------------- 563 * PWM sysfs interfaces 564 * ix = [0-1] 565 * --------------------------------------------------------------------- */ 566 567#define SHOW_PWM 0 568#define SHOW_SET_PWM_ENABLE 1 569#define SHOW_SET_PWM_FREQ 2 570#define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3 571 572static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 573 char *buf) 574{ 575 struct vt1211_data *data = vt1211_update_device(dev); 576 struct sensor_device_attribute_2 *sensor_attr_2 = 577 to_sensor_dev_attr_2(attr); 578 int ix = sensor_attr_2->index; 579 int fn = sensor_attr_2->nr; 580 int res; 581 582 switch (fn) { 583 case SHOW_PWM: 584 res = data->pwm[ix]; 585 break; 586 case SHOW_SET_PWM_ENABLE: 587 res = ((data->pwm_ctl[ix] >> 3) & 1) ? 2 : 0; 588 break; 589 case SHOW_SET_PWM_FREQ: 590 res = 90000 >> (data->pwm_clk & 7); 591 break; 592 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP: 593 res = (data->pwm_ctl[ix] & 7) + 1; 594 break; 595 default: 596 res = 0; 597 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 598 } 599 600 return sprintf(buf, "%d\n", res); 601} 602 603static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 604 const char *buf, size_t count) 605{ 606 struct vt1211_data *data = dev_get_drvdata(dev); 607 struct sensor_device_attribute_2 *sensor_attr_2 = 608 to_sensor_dev_attr_2(attr); 609 int ix = sensor_attr_2->index; 610 int fn = sensor_attr_2->nr; 611 long val = simple_strtol(buf, NULL, 10); 612 int tmp, reg; 613 614 mutex_lock(&data->update_lock); 615 616 switch (fn) { 617 case SHOW_SET_PWM_ENABLE: 618 /* sync the data cache */ 619 reg = vt1211_read8(data, VT1211_REG_FAN_DIV); 620 data->fan_div[0] = (reg >> 4) & 3; 621 data->fan_div[1] = (reg >> 6) & 3; 622 data->fan_ctl = reg & 0xf; 623 reg = vt1211_read8(data, VT1211_REG_PWM_CTL); 624 data->pwm_ctl[0] = reg & 0xf; 625 data->pwm_ctl[1] = (reg >> 4) & 0xf; 626 switch (val) { 627 case 0: 628 data->pwm_ctl[ix] &= 7; 629 /* disable SmartGuardian if both PWM outputs are 630 * disabled */ 631 if ((data->pwm_ctl[ix ^ 1] & 1) == 0) { 632 data->fan_ctl &= 0xe; 633 } 634 break; 635 case 2: 636 data->pwm_ctl[ix] |= 8; 637 data->fan_ctl |= 1; 638 break; 639 default: 640 count = -EINVAL; 641 dev_warn(dev, "pwm mode %ld not supported. " 642 "Choose one of 0 or 2.\n", val); 643 goto EXIT; 644 } 645 vt1211_write8(data, VT1211_REG_PWM_CTL, 646 ((data->pwm_ctl[1] << 4) | 647 data->pwm_ctl[0])); 648 vt1211_write8(data, VT1211_REG_FAN_DIV, 649 ((data->fan_div[1] << 6) | 650 (data->fan_div[0] << 4) | 651 data->fan_ctl)); 652 break; 653 case SHOW_SET_PWM_FREQ: 654 val = 135000 / SENSORS_LIMIT(val, 135000 >> 7, 135000); 655 /* calculate tmp = log2(val) */ 656 tmp = 0; 657 for (val >>= 1; val > 0; val >>= 1) { 658 tmp++; 659 } 660 /* sync the data cache */ 661 reg = vt1211_read8(data, VT1211_REG_PWM_CLK); 662 data->pwm_clk = (reg & 0xf8) | tmp; 663 vt1211_write8(data, VT1211_REG_PWM_CLK, data->pwm_clk); 664 break; 665 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP: 666 if ((val < 1) || (val > 7)) { 667 count = -EINVAL; 668 dev_warn(dev, "temp channel %ld not supported. " 669 "Choose a value between 1 and 7.\n", val); 670 goto EXIT; 671 } 672 if (!ISTEMP(val - 1, data->uch_config)) { 673 count = -EINVAL; 674 dev_warn(dev, "temp channel %ld is not available.\n", 675 val); 676 goto EXIT; 677 } 678 /* sync the data cache */ 679 reg = vt1211_read8(data, VT1211_REG_PWM_CTL); 680 data->pwm_ctl[0] = reg & 0xf; 681 data->pwm_ctl[1] = (reg >> 4) & 0xf; 682 data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8) | (val - 1); 683 vt1211_write8(data, VT1211_REG_PWM_CTL, 684 ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0])); 685 break; 686 default: 687 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 688 } 689 690EXIT: 691 mutex_unlock(&data->update_lock); 692 return count; 693} 694 695/* --------------------------------------------------------------------- 696 * PWM auto point definitions 697 * ix = [0-1] 698 * ap = [0-3] 699 * --------------------------------------------------------------------- */ 700 701/* 702 * pwm[ix+1]_auto_point[ap+1]_temp mapping table: 703 * Note that there is only a single set of temp auto points that controls both 704 * PWM controllers. We still create 2 sets of sysfs files to make it look 705 * more consistent even though they map to the same registers. 706 * 707 * ix ap : description 708 * ------------------- 709 * 0 0 : pwm1/2 off temperature (pwm_auto_temp[0]) 710 * 0 1 : pwm1/2 low speed temperature (pwm_auto_temp[1]) 711 * 0 2 : pwm1/2 high speed temperature (pwm_auto_temp[2]) 712 * 0 3 : pwm1/2 full speed temperature (pwm_auto_temp[3]) 713 * 1 0 : pwm1/2 off temperature (pwm_auto_temp[0]) 714 * 1 1 : pwm1/2 low speed temperature (pwm_auto_temp[1]) 715 * 1 2 : pwm1/2 high speed temperature (pwm_auto_temp[2]) 716 * 1 3 : pwm1/2 full speed temperature (pwm_auto_temp[3]) 717 */ 718 719static ssize_t show_pwm_auto_point_temp(struct device *dev, 720 struct device_attribute *attr, 721 char *buf) 722{ 723 struct vt1211_data *data = vt1211_update_device(dev); 724 struct sensor_device_attribute_2 *sensor_attr_2 = 725 to_sensor_dev_attr_2(attr); 726 int ix = sensor_attr_2->index; 727 int ap = sensor_attr_2->nr; 728 729 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->pwm_ctl[ix] & 7, 730 data->pwm_auto_temp[ap])); 731} 732 733static ssize_t set_pwm_auto_point_temp(struct device *dev, 734 struct device_attribute *attr, 735 const char *buf, size_t count) 736{ 737 struct vt1211_data *data = dev_get_drvdata(dev); 738 struct sensor_device_attribute_2 *sensor_attr_2 = 739 to_sensor_dev_attr_2(attr); 740 int ix = sensor_attr_2->index; 741 int ap = sensor_attr_2->nr; 742 long val = simple_strtol(buf, NULL, 10); 743 int reg; 744 745 mutex_lock(&data->update_lock); 746 747 /* sync the data cache */ 748 reg = vt1211_read8(data, VT1211_REG_PWM_CTL); 749 data->pwm_ctl[0] = reg & 0xf; 750 data->pwm_ctl[1] = (reg >> 4) & 0xf; 751 752 data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7, val); 753 vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap), 754 data->pwm_auto_temp[ap]); 755 mutex_unlock(&data->update_lock); 756 757 return count; 758} 759 760/* 761 * pwm[ix+1]_auto_point[ap+1]_pwm mapping table: 762 * Note that the PWM auto points 0 & 3 are hard-wired in the VT1211 and can't 763 * be changed. 764 * 765 * ix ap : description 766 * ------------------- 767 * 0 0 : pwm1 off (pwm_auto_pwm[0][0], hard-wired to 0) 768 * 0 1 : pwm1 low speed duty cycle (pwm_auto_pwm[0][1]) 769 * 0 2 : pwm1 high speed duty cycle (pwm_auto_pwm[0][2]) 770 * 0 3 : pwm1 full speed (pwm_auto_pwm[0][3], hard-wired to 255) 771 * 1 0 : pwm2 off (pwm_auto_pwm[1][0], hard-wired to 0) 772 * 1 1 : pwm2 low speed duty cycle (pwm_auto_pwm[1][1]) 773 * 1 2 : pwm2 high speed duty cycle (pwm_auto_pwm[1][2]) 774 * 1 3 : pwm2 full speed (pwm_auto_pwm[1][3], hard-wired to 255) 775*/ 776 777static ssize_t show_pwm_auto_point_pwm(struct device *dev, 778 struct device_attribute *attr, 779 char *buf) 780{ 781 struct vt1211_data *data = vt1211_update_device(dev); 782 struct sensor_device_attribute_2 *sensor_attr_2 = 783 to_sensor_dev_attr_2(attr); 784 int ix = sensor_attr_2->index; 785 int ap = sensor_attr_2->nr; 786 787 return sprintf(buf, "%d\n", data->pwm_auto_pwm[ix][ap]); 788} 789 790static ssize_t set_pwm_auto_point_pwm(struct device *dev, 791 struct device_attribute *attr, 792 const char *buf, size_t count) 793{ 794 struct vt1211_data *data = dev_get_drvdata(dev); 795 struct sensor_device_attribute_2 *sensor_attr_2 = 796 to_sensor_dev_attr_2(attr); 797 int ix = sensor_attr_2->index; 798 int ap = sensor_attr_2->nr; 799 long val = simple_strtol(buf, NULL, 10); 800 801 if ((val < 0) || (val > 255)) { 802 dev_err(dev, "pwm value %ld is out of range. " 803 "Choose a value between 0 and 255.\n" , val); 804 return -EINVAL; 805 } 806 807 mutex_lock(&data->update_lock); 808 data->pwm_auto_pwm[ix][ap] = val; 809 vt1211_write8(data, VT1211_REG_PWM_AUTO_PWM(ix, ap), 810 data->pwm_auto_pwm[ix][ap]); 811 mutex_unlock(&data->update_lock); 812 813 return count; 814} 815 816/* --------------------------------------------------------------------- 817 * Miscellaneous sysfs interfaces (VRM, VID, name, and (legacy) alarms) 818 * --------------------------------------------------------------------- */ 819 820static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, 821 char *buf) 822{ 823 struct vt1211_data *data = dev_get_drvdata(dev); 824 825 return sprintf(buf, "%d\n", data->vrm); 826} 827 828static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, 829 const char *buf, size_t count) 830{ 831 struct vt1211_data *data = dev_get_drvdata(dev); 832 long val = simple_strtol(buf, NULL, 10); 833 834 data->vrm = val; 835 836 return count; 837} 838 839static ssize_t show_vid(struct device *dev, struct device_attribute *attr, 840 char *buf) 841{ 842 struct vt1211_data *data = dev_get_drvdata(dev); 843 844 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 845} 846 847static ssize_t show_name(struct device *dev, 848 struct device_attribute *attr, char *buf) 849{ 850 struct vt1211_data *data = dev_get_drvdata(dev); 851 852 return sprintf(buf, "%s\n", data->name); 853} 854 855static ssize_t show_alarms(struct device *dev, 856 struct device_attribute *attr, char *buf) 857{ 858 struct vt1211_data *data = vt1211_update_device(dev); 859 860 return sprintf(buf, "%d\n", data->alarms); 861} 862 863/* --------------------------------------------------------------------- 864 * Device attribute structs 865 * --------------------------------------------------------------------- */ 866 867#define SENSOR_ATTR_IN_INPUT(ix) \ 868 SENSOR_ATTR_2(in##ix##_input, S_IRUGO, \ 869 show_in, NULL, SHOW_IN_INPUT, ix) 870 871static struct sensor_device_attribute_2 vt1211_sysfs_in_input[] = { 872 SENSOR_ATTR_IN_INPUT(0), 873 SENSOR_ATTR_IN_INPUT(1), 874 SENSOR_ATTR_IN_INPUT(2), 875 SENSOR_ATTR_IN_INPUT(3), 876 SENSOR_ATTR_IN_INPUT(4), 877 SENSOR_ATTR_IN_INPUT(5), 878}; 879 880#define SENSOR_ATTR_IN_MIN(ix) \ 881 SENSOR_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \ 882 show_in, set_in, SHOW_SET_IN_MIN, ix) 883 884static struct sensor_device_attribute_2 vt1211_sysfs_in_min[] = { 885 SENSOR_ATTR_IN_MIN(0), 886 SENSOR_ATTR_IN_MIN(1), 887 SENSOR_ATTR_IN_MIN(2), 888 SENSOR_ATTR_IN_MIN(3), 889 SENSOR_ATTR_IN_MIN(4), 890 SENSOR_ATTR_IN_MIN(5), 891}; 892 893#define SENSOR_ATTR_IN_MAX(ix) \ 894 SENSOR_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \ 895 show_in, set_in, SHOW_SET_IN_MAX, ix) 896 897static struct sensor_device_attribute_2 vt1211_sysfs_in_max[] = { 898 SENSOR_ATTR_IN_MAX(0), 899 SENSOR_ATTR_IN_MAX(1), 900 SENSOR_ATTR_IN_MAX(2), 901 SENSOR_ATTR_IN_MAX(3), 902 SENSOR_ATTR_IN_MAX(4), 903 SENSOR_ATTR_IN_MAX(5), 904}; 905 906#define SENSOR_ATTR_IN_ALARM(ix) \ 907 SENSOR_ATTR_2(in##ix##_alarm, S_IRUGO, \ 908 show_in, NULL, SHOW_IN_ALARM, ix) 909 910static struct sensor_device_attribute_2 vt1211_sysfs_in_alarm[] = { 911 SENSOR_ATTR_IN_ALARM(0), 912 SENSOR_ATTR_IN_ALARM(1), 913 SENSOR_ATTR_IN_ALARM(2), 914 SENSOR_ATTR_IN_ALARM(3), 915 SENSOR_ATTR_IN_ALARM(4), 916 SENSOR_ATTR_IN_ALARM(5), 917}; 918 919#define SENSOR_ATTR_TEMP_INPUT(ix) \ 920 SENSOR_ATTR_2(temp##ix##_input, S_IRUGO, \ 921 show_temp, NULL, SHOW_TEMP_INPUT, ix-1) 922 923static struct sensor_device_attribute_2 vt1211_sysfs_temp_input[] = { 924 SENSOR_ATTR_TEMP_INPUT(1), 925 SENSOR_ATTR_TEMP_INPUT(2), 926 SENSOR_ATTR_TEMP_INPUT(3), 927 SENSOR_ATTR_TEMP_INPUT(4), 928 SENSOR_ATTR_TEMP_INPUT(5), 929 SENSOR_ATTR_TEMP_INPUT(6), 930 SENSOR_ATTR_TEMP_INPUT(7), 931}; 932 933#define SENSOR_ATTR_TEMP_MAX(ix) \ 934 SENSOR_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \ 935 show_temp, set_temp, SHOW_SET_TEMP_MAX, ix-1) 936 937static struct sensor_device_attribute_2 vt1211_sysfs_temp_max[] = { 938 SENSOR_ATTR_TEMP_MAX(1), 939 SENSOR_ATTR_TEMP_MAX(2), 940 SENSOR_ATTR_TEMP_MAX(3), 941 SENSOR_ATTR_TEMP_MAX(4), 942 SENSOR_ATTR_TEMP_MAX(5), 943 SENSOR_ATTR_TEMP_MAX(6), 944 SENSOR_ATTR_TEMP_MAX(7), 945}; 946 947#define SENSOR_ATTR_TEMP_MAX_HYST(ix) \ 948 SENSOR_ATTR_2(temp##ix##_max_hyst, S_IRUGO | S_IWUSR, \ 949 show_temp, set_temp, SHOW_SET_TEMP_MAX_HYST, ix-1) 950 951static struct sensor_device_attribute_2 vt1211_sysfs_temp_max_hyst[] = { 952 SENSOR_ATTR_TEMP_MAX_HYST(1), 953 SENSOR_ATTR_TEMP_MAX_HYST(2), 954 SENSOR_ATTR_TEMP_MAX_HYST(3), 955 SENSOR_ATTR_TEMP_MAX_HYST(4), 956 SENSOR_ATTR_TEMP_MAX_HYST(5), 957 SENSOR_ATTR_TEMP_MAX_HYST(6), 958 SENSOR_ATTR_TEMP_MAX_HYST(7), 959}; 960 961#define SENSOR_ATTR_TEMP_ALARM(ix) \ 962 SENSOR_ATTR_2(temp##ix##_alarm, S_IRUGO, \ 963 show_temp, NULL, SHOW_TEMP_ALARM, ix-1) 964 965static struct sensor_device_attribute_2 vt1211_sysfs_temp_alarm[] = { 966 SENSOR_ATTR_TEMP_ALARM(1), 967 SENSOR_ATTR_TEMP_ALARM(2), 968 SENSOR_ATTR_TEMP_ALARM(3), 969 SENSOR_ATTR_TEMP_ALARM(4), 970 SENSOR_ATTR_TEMP_ALARM(5), 971 SENSOR_ATTR_TEMP_ALARM(6), 972 SENSOR_ATTR_TEMP_ALARM(7), 973}; 974 975#define SENSOR_ATTR_FAN(ix) \ 976 SENSOR_ATTR_2(fan##ix##_input, S_IRUGO, \ 977 show_fan, NULL, SHOW_FAN_INPUT, ix-1), \ 978 SENSOR_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \ 979 show_fan, set_fan, SHOW_SET_FAN_MIN, ix-1), \ 980 SENSOR_ATTR_2(fan##ix##_div, S_IRUGO | S_IWUSR, \ 981 show_fan, set_fan, SHOW_SET_FAN_DIV, ix-1), \ 982 SENSOR_ATTR_2(fan##ix##_alarm, S_IRUGO, \ 983 show_fan, NULL, SHOW_FAN_ALARM, ix-1) 984 985#define SENSOR_ATTR_PWM(ix) \ 986 SENSOR_ATTR_2(pwm##ix, S_IRUGO, \ 987 show_pwm, NULL, SHOW_PWM, ix-1), \ 988 SENSOR_ATTR_2(pwm##ix##_enable, S_IRUGO | S_IWUSR, \ 989 show_pwm, set_pwm, SHOW_SET_PWM_ENABLE, ix-1), \ 990 SENSOR_ATTR_2(pwm##ix##_auto_channels_temp, S_IRUGO | S_IWUSR, \ 991 show_pwm, set_pwm, SHOW_SET_PWM_AUTO_CHANNELS_TEMP, ix-1) 992 993#define SENSOR_ATTR_PWM_FREQ(ix) \ 994 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \ 995 show_pwm, set_pwm, SHOW_SET_PWM_FREQ, ix-1) 996 997#define SENSOR_ATTR_PWM_FREQ_RO(ix) \ 998 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO, \ 999 show_pwm, NULL, SHOW_SET_PWM_FREQ, ix-1) 1000 1001#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP(ix, ap) \ 1002 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO | S_IWUSR, \ 1003 show_pwm_auto_point_temp, set_pwm_auto_point_temp, \ 1004 ap-1, ix-1) 1005 1006#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(ix, ap) \ 1007 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO, \ 1008 show_pwm_auto_point_temp, NULL, \ 1009 ap-1, ix-1) 1010 1011#define SENSOR_ATTR_PWM_AUTO_POINT_PWM(ix, ap) \ 1012 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO | S_IWUSR, \ 1013 show_pwm_auto_point_pwm, set_pwm_auto_point_pwm, \ 1014 ap-1, ix-1) 1015 1016#define SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(ix, ap) \ 1017 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO, \ 1018 show_pwm_auto_point_pwm, NULL, \ 1019 ap-1, ix-1) 1020 1021static struct sensor_device_attribute_2 vt1211_sysfs_fan_pwm[] = { 1022 SENSOR_ATTR_FAN(1), 1023 SENSOR_ATTR_FAN(2), 1024 SENSOR_ATTR_PWM(1), 1025 SENSOR_ATTR_PWM(2), 1026 SENSOR_ATTR_PWM_FREQ(1), 1027 SENSOR_ATTR_PWM_FREQ_RO(2), 1028 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 1), 1029 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 2), 1030 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 3), 1031 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 4), 1032 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 1), 1033 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 2), 1034 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 3), 1035 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 4), 1036 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 1), 1037 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 2), 1038 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 3), 1039 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 4), 1040 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 1), 1041 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 2), 1042 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 3), 1043 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 4), 1044}; 1045 1046static struct device_attribute vt1211_sysfs_misc[] = { 1047 __ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm), 1048 __ATTR(cpu0_vid, S_IRUGO, show_vid, NULL), 1049 __ATTR(name, S_IRUGO, show_name, NULL), 1050 __ATTR(alarms, S_IRUGO, show_alarms, NULL), 1051}; 1052 1053/* --------------------------------------------------------------------- 1054 * Device registration and initialization 1055 * --------------------------------------------------------------------- */ 1056 1057static void __devinit vt1211_init_device(struct vt1211_data *data) 1058{ 1059 /* set VRM */ 1060 data->vrm = vid_which_vrm(); 1061 1062 /* Read (and initialize) UCH config */ 1063 data->uch_config = vt1211_read8(data, VT1211_REG_UCH_CONFIG); 1064 if (uch_config > -1) { 1065 data->uch_config = (data->uch_config & 0x83) | 1066 (uch_config << 2); 1067 vt1211_write8(data, VT1211_REG_UCH_CONFIG, data->uch_config); 1068 } 1069 1070 /* Initialize the interrupt mode (if request at module load time). 1071 * The VT1211 implements 3 different modes for clearing interrupts: 1072 * 0: Clear INT when status register is read. Regenerate INT as long 1073 * as temp stays above hysteresis limit. 1074 * 1: Clear INT when status register is read. DON'T regenerate INT 1075 * until temp falls below hysteresis limit and exceeds hot limit 1076 * again. 1077 * 2: Clear INT when temp falls below max limit. 1078 * 1079 * The driver only allows to force mode 0 since that's the only one 1080 * that makes sense for 'sensors' */ 1081 if (int_mode == 0) { 1082 vt1211_write8(data, VT1211_REG_TEMP1_CONFIG, 0); 1083 vt1211_write8(data, VT1211_REG_TEMP2_CONFIG, 0); 1084 } 1085 1086 /* Fill in some hard wired values into our data struct */ 1087 data->pwm_auto_pwm[0][3] = 255; 1088 data->pwm_auto_pwm[1][3] = 255; 1089} 1090 1091static void vt1211_remove_sysfs(struct platform_device *pdev) 1092{ 1093 struct device *dev = &pdev->dev; 1094 int i; 1095 1096 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_in_input); i++) { 1097 device_remove_file(dev, 1098 &vt1211_sysfs_in_input[i].dev_attr); 1099 device_remove_file(dev, 1100 &vt1211_sysfs_in_min[i].dev_attr); 1101 device_remove_file(dev, 1102 &vt1211_sysfs_in_max[i].dev_attr); 1103 device_remove_file(dev, 1104 &vt1211_sysfs_in_alarm[i].dev_attr); 1105 } 1106 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_temp_input); i++) { 1107 device_remove_file(dev, 1108 &vt1211_sysfs_temp_input[i].dev_attr); 1109 device_remove_file(dev, 1110 &vt1211_sysfs_temp_max[i].dev_attr); 1111 device_remove_file(dev, 1112 &vt1211_sysfs_temp_max_hyst[i].dev_attr); 1113 device_remove_file(dev, 1114 &vt1211_sysfs_temp_alarm[i].dev_attr); 1115 } 1116 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) { 1117 device_remove_file(dev, 1118 &vt1211_sysfs_fan_pwm[i].dev_attr); 1119 } 1120 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) { 1121 device_remove_file(dev, &vt1211_sysfs_misc[i]); 1122 } 1123} 1124 1125static int __devinit vt1211_probe(struct platform_device *pdev) 1126{ 1127 struct device *dev = &pdev->dev; 1128 struct vt1211_data *data; 1129 struct resource *res; 1130 int i, err; 1131 1132 if (!(data = kzalloc(sizeof(struct vt1211_data), GFP_KERNEL))) { 1133 err = -ENOMEM; 1134 dev_err(dev, "Out of memory\n"); 1135 goto EXIT; 1136 } 1137 1138 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 1139 if (!request_region(res->start, resource_size(res), DRVNAME)) { 1140 err = -EBUSY; 1141 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 1142 (unsigned long)res->start, (unsigned long)res->end); 1143 goto EXIT_KFREE; 1144 } 1145 data->addr = res->start; 1146 data->name = DRVNAME; 1147 mutex_init(&data->update_lock); 1148 1149 platform_set_drvdata(pdev, data); 1150 1151 /* Initialize the VT1211 chip */ 1152 vt1211_init_device(data); 1153 1154 /* Create sysfs interface files */ 1155 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_in_input); i++) { 1156 if (ISVOLT(i, data->uch_config)) { 1157 if ((err = device_create_file(dev, 1158 &vt1211_sysfs_in_input[i].dev_attr)) || 1159 (err = device_create_file(dev, 1160 &vt1211_sysfs_in_min[i].dev_attr)) || 1161 (err = device_create_file(dev, 1162 &vt1211_sysfs_in_max[i].dev_attr)) || 1163 (err = device_create_file(dev, 1164 &vt1211_sysfs_in_alarm[i].dev_attr))) { 1165 goto EXIT_DEV_REMOVE; 1166 } 1167 } 1168 } 1169 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_temp_input); i++) { 1170 if (ISTEMP(i, data->uch_config)) { 1171 if ((err = device_create_file(dev, 1172 &vt1211_sysfs_temp_input[i].dev_attr)) || 1173 (err = device_create_file(dev, 1174 &vt1211_sysfs_temp_max[i].dev_attr)) || 1175 (err = device_create_file(dev, 1176 &vt1211_sysfs_temp_max_hyst[i].dev_attr)) || 1177 (err = device_create_file(dev, 1178 &vt1211_sysfs_temp_alarm[i].dev_attr))) { 1179 goto EXIT_DEV_REMOVE; 1180 } 1181 } 1182 } 1183 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) { 1184 err = device_create_file(dev, 1185 &vt1211_sysfs_fan_pwm[i].dev_attr); 1186 if (err) { 1187 goto EXIT_DEV_REMOVE; 1188 } 1189 } 1190 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) { 1191 err = device_create_file(dev, 1192 &vt1211_sysfs_misc[i]); 1193 if (err) { 1194 goto EXIT_DEV_REMOVE; 1195 } 1196 } 1197 1198 /* Register device */ 1199 data->hwmon_dev = hwmon_device_register(dev); 1200 if (IS_ERR(data->hwmon_dev)) { 1201 err = PTR_ERR(data->hwmon_dev); 1202 dev_err(dev, "Class registration failed (%d)\n", err); 1203 goto EXIT_DEV_REMOVE_SILENT; 1204 } 1205 1206 return 0; 1207 1208EXIT_DEV_REMOVE: 1209 dev_err(dev, "Sysfs interface creation failed (%d)\n", err); 1210EXIT_DEV_REMOVE_SILENT: 1211 vt1211_remove_sysfs(pdev); 1212 release_region(res->start, resource_size(res)); 1213EXIT_KFREE: 1214 platform_set_drvdata(pdev, NULL); 1215 kfree(data); 1216EXIT: 1217 return err; 1218} 1219 1220static int __devexit vt1211_remove(struct platform_device *pdev) 1221{ 1222 struct vt1211_data *data = platform_get_drvdata(pdev); 1223 struct resource *res; 1224 1225 hwmon_device_unregister(data->hwmon_dev); 1226 vt1211_remove_sysfs(pdev); 1227 platform_set_drvdata(pdev, NULL); 1228 kfree(data); 1229 1230 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 1231 release_region(res->start, resource_size(res)); 1232 1233 return 0; 1234} 1235 1236static struct platform_driver vt1211_driver = { 1237 .driver = { 1238 .owner = THIS_MODULE, 1239 .name = DRVNAME, 1240 }, 1241 .probe = vt1211_probe, 1242 .remove = __devexit_p(vt1211_remove), 1243}; 1244 1245static int __init vt1211_device_add(unsigned short address) 1246{ 1247 struct resource res = { 1248 .start = address, 1249 .end = address + 0x7f, 1250 .flags = IORESOURCE_IO, 1251 }; 1252 int err; 1253 1254 pdev = platform_device_alloc(DRVNAME, address); 1255 if (!pdev) { 1256 err = -ENOMEM; 1257 printk(KERN_ERR DRVNAME ": Device allocation failed (%d)\n", 1258 err); 1259 goto EXIT; 1260 } 1261 1262 res.name = pdev->name; 1263 err = acpi_check_resource_conflict(&res); 1264 if (err) 1265 goto EXIT_DEV_PUT; 1266 1267 err = platform_device_add_resources(pdev, &res, 1); 1268 if (err) { 1269 printk(KERN_ERR DRVNAME ": Device resource addition failed " 1270 "(%d)\n", err); 1271 goto EXIT_DEV_PUT; 1272 } 1273 1274 err = platform_device_add(pdev); 1275 if (err) { 1276 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", 1277 err); 1278 goto EXIT_DEV_PUT; 1279 } 1280 1281 return 0; 1282 1283EXIT_DEV_PUT: 1284 platform_device_put(pdev); 1285EXIT: 1286 return err; 1287} 1288 1289static int __init vt1211_find(int sio_cip, unsigned short *address) 1290{ 1291 int err = -ENODEV; 1292 int devid; 1293 1294 superio_enter(sio_cip); 1295 1296 devid = force_id ? force_id : superio_inb(sio_cip, SIO_VT1211_DEVID); 1297 if (devid != SIO_VT1211_ID) { 1298 goto EXIT; 1299 } 1300 1301 superio_select(sio_cip, SIO_VT1211_LDN_HWMON); 1302 1303 if ((superio_inb(sio_cip, SIO_VT1211_ACTIVE) & 1) == 0) { 1304 printk(KERN_WARNING DRVNAME ": HW monitor is disabled, " 1305 "skipping\n"); 1306 goto EXIT; 1307 } 1308 1309 *address = ((superio_inb(sio_cip, SIO_VT1211_BADDR) << 8) | 1310 (superio_inb(sio_cip, SIO_VT1211_BADDR + 1))) & 0xff00; 1311 if (*address == 0) { 1312 printk(KERN_WARNING DRVNAME ": Base address is not set, " 1313 "skipping\n"); 1314 goto EXIT; 1315 } 1316 1317 err = 0; 1318 printk(KERN_INFO DRVNAME ": Found VT1211 chip at 0x%04x, " 1319 "revision %u\n", *address, 1320 superio_inb(sio_cip, SIO_VT1211_DEVREV)); 1321 1322EXIT: 1323 superio_exit(sio_cip); 1324 return err; 1325} 1326 1327static int __init vt1211_init(void) 1328{ 1329 int err; 1330 unsigned short address = 0; 1331 1332 if ((err = vt1211_find(SIO_REG_CIP1, &address)) && 1333 (err = vt1211_find(SIO_REG_CIP2, &address))) { 1334 goto EXIT; 1335 } 1336 1337 if ((uch_config < -1) || (uch_config > 31)) { 1338 err = -EINVAL; 1339 printk(KERN_WARNING DRVNAME ": Invalid UCH configuration %d. " 1340 "Choose a value between 0 and 31.\n", uch_config); 1341 goto EXIT; 1342 } 1343 1344 if ((int_mode < -1) || (int_mode > 0)) { 1345 err = -EINVAL; 1346 printk(KERN_WARNING DRVNAME ": Invalid interrupt mode %d. " 1347 "Only mode 0 is supported.\n", int_mode); 1348 goto EXIT; 1349 } 1350 1351 err = platform_driver_register(&vt1211_driver); 1352 if (err) { 1353 goto EXIT; 1354 } 1355 1356 /* Sets global pdev as a side effect */ 1357 err = vt1211_device_add(address); 1358 if (err) { 1359 goto EXIT_DRV_UNREGISTER; 1360 } 1361 1362 return 0; 1363 1364EXIT_DRV_UNREGISTER: 1365 platform_driver_unregister(&vt1211_driver); 1366EXIT: 1367 return err; 1368} 1369 1370static void __exit vt1211_exit(void) 1371{ 1372 platform_device_unregister(pdev); 1373 platform_driver_unregister(&vt1211_driver); 1374} 1375 1376MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>"); 1377MODULE_DESCRIPTION("VT1211 sensors"); 1378MODULE_LICENSE("GPL"); 1379 1380module_init(vt1211_init); 1381module_exit(vt1211_exit); 1382