vt1211.c revision 67b671bceb4a8340a30929e9642620d99ed5ad76
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 <asm/io.h> 36 37static int uch_config = -1; 38module_param(uch_config, int, 0); 39MODULE_PARM_DESC(uch_config, "Initialize the universal channel configuration"); 40 41static int int_mode = -1; 42module_param(int_mode, int, 0); 43MODULE_PARM_DESC(int_mode, "Force the temperature interrupt mode"); 44 45static unsigned short force_id; 46module_param(force_id, ushort, 0); 47MODULE_PARM_DESC(force_id, "Override the detected device ID"); 48 49static struct platform_device *pdev; 50 51#define DRVNAME "vt1211" 52 53/* --------------------------------------------------------------------- 54 * Registers 55 * 56 * The sensors are defined as follows. 57 * 58 * Sensor Voltage Mode Temp Mode Notes (from the datasheet) 59 * -------- ------------ --------- -------------------------- 60 * Reading 1 temp1 Intel thermal diode 61 * Reading 3 temp2 Internal thermal diode 62 * UCH1/Reading2 in0 temp3 NTC type thermistor 63 * UCH2 in1 temp4 +2.5V 64 * UCH3 in2 temp5 VccP 65 * UCH4 in3 temp6 +5V 66 * UCH5 in4 temp7 +12V 67 * 3.3V in5 Internal VDD (+3.3V) 68 * 69 * --------------------------------------------------------------------- */ 70 71/* Voltages (in) numbered 0-5 (ix) */ 72#define VT1211_REG_IN(ix) (0x21 + (ix)) 73#define VT1211_REG_IN_MIN(ix) ((ix) == 0 ? 0x3e : 0x2a + 2 * (ix)) 74#define VT1211_REG_IN_MAX(ix) ((ix) == 0 ? 0x3d : 0x29 + 2 * (ix)) 75 76/* Temperatures (temp) numbered 0-6 (ix) */ 77static u8 regtemp[] = {0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25}; 78static u8 regtempmax[] = {0x39, 0x1d, 0x3d, 0x2b, 0x2d, 0x2f, 0x31}; 79static u8 regtemphyst[] = {0x3a, 0x1e, 0x3e, 0x2c, 0x2e, 0x30, 0x32}; 80 81/* Fans numbered 0-1 (ix) */ 82#define VT1211_REG_FAN(ix) (0x29 + (ix)) 83#define VT1211_REG_FAN_MIN(ix) (0x3b + (ix)) 84#define VT1211_REG_FAN_DIV 0x47 85 86/* PWMs numbered 0-1 (ix) */ 87/* Auto points numbered 0-3 (ap) */ 88#define VT1211_REG_PWM(ix) (0x60 + (ix)) 89#define VT1211_REG_PWM_CLK 0x50 90#define VT1211_REG_PWM_CTL 0x51 91#define VT1211_REG_PWM_AUTO_TEMP(ap) (0x55 - (ap)) 92#define VT1211_REG_PWM_AUTO_PWM(ix, ap) (0x58 + 2 * (ix) - (ap)) 93 94/* Miscellaneous registers */ 95#define VT1211_REG_CONFIG 0x40 96#define VT1211_REG_ALARM1 0x41 97#define VT1211_REG_ALARM2 0x42 98#define VT1211_REG_VID 0x45 99#define VT1211_REG_UCH_CONFIG 0x4a 100#define VT1211_REG_TEMP1_CONFIG 0x4b 101#define VT1211_REG_TEMP2_CONFIG 0x4c 102 103/* In, temp & fan alarm bits */ 104static const u8 bitalarmin[] = {11, 0, 1, 3, 8, 2, 9}; 105static const u8 bitalarmtemp[] = {4, 15, 11, 0, 1, 3, 8}; 106static const u8 bitalarmfan[] = {6, 7}; 107 108/* --------------------------------------------------------------------- 109 * Data structures and manipulation thereof 110 * --------------------------------------------------------------------- */ 111 112struct vt1211_data { 113 unsigned short addr; 114 const char *name; 115 struct device *hwmon_dev; 116 117 struct mutex update_lock; 118 char valid; /* !=0 if following fields are valid */ 119 unsigned long last_updated; /* In jiffies */ 120 121 /* Register values */ 122 u8 in[6]; 123 u8 in_max[6]; 124 u8 in_min[6]; 125 u8 temp[7]; 126 u8 temp_max[7]; 127 u8 temp_hyst[7]; 128 u8 fan[2]; 129 u8 fan_min[2]; 130 u8 fan_div[2]; 131 u8 fan_ctl; 132 u8 pwm[2]; 133 u8 pwm_ctl[2]; 134 u8 pwm_clk; 135 u8 pwm_auto_temp[4]; 136 u8 pwm_auto_pwm[2][4]; 137 u8 vid; /* Read once at init time */ 138 u8 vrm; 139 u8 uch_config; /* Read once at init time */ 140 u16 alarms; 141}; 142 143/* ix = [0-5] */ 144#define ISVOLT(ix, uch_config) ((ix) > 4 ? 1 : \ 145 !(((uch_config) >> ((ix) + 2)) & 1)) 146 147/* ix = [0-6] */ 148#define ISTEMP(ix, uch_config) ((ix) < 2 ? 1 : \ 149 ((uch_config) >> (ix)) & 1) 150 151/* in5 (ix = 5) is special. It's the internal 3.3V so it's scaled in the 152 driver according to the VT1211 BIOS porting guide */ 153#define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \ 154 (((reg) - 3) * 15882 + 479) / 958 : \ 155 (((reg) - 3) * 10000 + 479) / 958) 156#define IN_TO_REG(ix, val) (SENSORS_LIMIT((ix) == 5 ? \ 157 ((val) * 958 + 7941) / 15882 + 3 : \ 158 ((val) * 958 + 5000) / 10000 + 3, 0, 255)) 159 160/* temp1 (ix = 0) is an intel thermal diode which is scaled in user space. 161 temp2 (ix = 1) is the internal temp diode so it's scaled in the driver 162 according to some measurements that I took on an EPIA M10000. 163 temp3-7 are thermistor based so the driver returns the voltage measured at 164 the pin (range 0V - 2.2V). */ 165#define TEMP_FROM_REG(ix, reg) ((ix) == 0 ? (reg) * 1000 : \ 166 (ix) == 1 ? (reg) < 51 ? 0 : \ 167 ((reg) - 51) * 1000 : \ 168 ((253 - (reg)) * 2200 + 105) / 210) 169#define TEMP_TO_REG(ix, val) SENSORS_LIMIT( \ 170 ((ix) == 0 ? ((val) + 500) / 1000 : \ 171 (ix) == 1 ? ((val) + 500) / 1000 + 51 : \ 172 253 - ((val) * 210 + 1100) / 2200), 0, 255) 173 174#define DIV_FROM_REG(reg) (1 << (reg)) 175 176#define RPM_FROM_REG(reg, div) (((reg) == 0) || ((reg) == 255) ? 0 : \ 177 1310720 / (reg) / DIV_FROM_REG(div)) 178#define RPM_TO_REG(val, div) ((val) == 0 ? 255 : \ 179 SENSORS_LIMIT((1310720 / (val) / \ 180 DIV_FROM_REG(div)), 1, 254)) 181 182/* --------------------------------------------------------------------- 183 * Super-I/O constants and functions 184 * --------------------------------------------------------------------- */ 185 186/* Configuration index port registers 187 * The vt1211 can live at 2 different addresses so we need to probe both */ 188#define SIO_REG_CIP1 0x2e 189#define SIO_REG_CIP2 0x4e 190 191/* Configuration registers */ 192#define SIO_VT1211_LDN 0x07 /* logical device number */ 193#define SIO_VT1211_DEVID 0x20 /* device ID */ 194#define SIO_VT1211_DEVREV 0x21 /* device revision */ 195#define SIO_VT1211_ACTIVE 0x30 /* HW monitor active */ 196#define SIO_VT1211_BADDR 0x60 /* base I/O address */ 197#define SIO_VT1211_ID 0x3c /* VT1211 device ID */ 198 199/* VT1211 logical device numbers */ 200#define SIO_VT1211_LDN_HWMON 0x0b /* HW monitor */ 201 202static inline void superio_outb(int sio_cip, int reg, int val) 203{ 204 outb(reg, sio_cip); 205 outb(val, sio_cip + 1); 206} 207 208static inline int superio_inb(int sio_cip, int reg) 209{ 210 outb(reg, sio_cip); 211 return inb(sio_cip + 1); 212} 213 214static inline void superio_select(int sio_cip, int ldn) 215{ 216 outb(SIO_VT1211_LDN, sio_cip); 217 outb(ldn, sio_cip + 1); 218} 219 220static inline void superio_enter(int sio_cip) 221{ 222 outb(0x87, sio_cip); 223 outb(0x87, sio_cip); 224} 225 226static inline void superio_exit(int sio_cip) 227{ 228 outb(0xaa, sio_cip); 229} 230 231/* --------------------------------------------------------------------- 232 * Device I/O access 233 * --------------------------------------------------------------------- */ 234 235static inline u8 vt1211_read8(struct vt1211_data *data, u8 reg) 236{ 237 return inb(data->addr + reg); 238} 239 240static inline void vt1211_write8(struct vt1211_data *data, u8 reg, u8 val) 241{ 242 outb(val, data->addr + reg); 243} 244 245static struct vt1211_data *vt1211_update_device(struct device *dev) 246{ 247 struct vt1211_data *data = dev_get_drvdata(dev); 248 int ix, val; 249 250 mutex_lock(&data->update_lock); 251 252 /* registers cache is refreshed after 1 second */ 253 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 254 /* read VID */ 255 data->vid = vt1211_read8(data, VT1211_REG_VID) & 0x1f; 256 257 /* voltage (in) registers */ 258 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { 259 if (ISVOLT(ix, data->uch_config)) { 260 data->in[ix] = vt1211_read8(data, 261 VT1211_REG_IN(ix)); 262 data->in_min[ix] = vt1211_read8(data, 263 VT1211_REG_IN_MIN(ix)); 264 data->in_max[ix] = vt1211_read8(data, 265 VT1211_REG_IN_MAX(ix)); 266 } 267 } 268 269 /* temp registers */ 270 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) { 271 if (ISTEMP(ix, data->uch_config)) { 272 data->temp[ix] = vt1211_read8(data, 273 regtemp[ix]); 274 data->temp_max[ix] = vt1211_read8(data, 275 regtempmax[ix]); 276 data->temp_hyst[ix] = vt1211_read8(data, 277 regtemphyst[ix]); 278 } 279 } 280 281 /* fan & pwm registers */ 282 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) { 283 data->fan[ix] = vt1211_read8(data, 284 VT1211_REG_FAN(ix)); 285 data->fan_min[ix] = vt1211_read8(data, 286 VT1211_REG_FAN_MIN(ix)); 287 data->pwm[ix] = vt1211_read8(data, 288 VT1211_REG_PWM(ix)); 289 } 290 val = vt1211_read8(data, VT1211_REG_FAN_DIV); 291 data->fan_div[0] = (val >> 4) & 3; 292 data->fan_div[1] = (val >> 6) & 3; 293 data->fan_ctl = val & 0xf; 294 295 val = vt1211_read8(data, VT1211_REG_PWM_CTL); 296 data->pwm_ctl[0] = val & 0xf; 297 data->pwm_ctl[1] = (val >> 4) & 0xf; 298 299 data->pwm_clk = vt1211_read8(data, VT1211_REG_PWM_CLK); 300 301 /* pwm & temp auto point registers */ 302 data->pwm_auto_pwm[0][1] = vt1211_read8(data, 303 VT1211_REG_PWM_AUTO_PWM(0, 1)); 304 data->pwm_auto_pwm[0][2] = vt1211_read8(data, 305 VT1211_REG_PWM_AUTO_PWM(0, 2)); 306 data->pwm_auto_pwm[1][1] = vt1211_read8(data, 307 VT1211_REG_PWM_AUTO_PWM(1, 1)); 308 data->pwm_auto_pwm[1][2] = vt1211_read8(data, 309 VT1211_REG_PWM_AUTO_PWM(1, 2)); 310 for (ix = 0; ix < ARRAY_SIZE(data->pwm_auto_temp); ix++) { 311 data->pwm_auto_temp[ix] = vt1211_read8(data, 312 VT1211_REG_PWM_AUTO_TEMP(ix)); 313 } 314 315 /* alarm registers */ 316 data->alarms = (vt1211_read8(data, VT1211_REG_ALARM2) << 8) | 317 vt1211_read8(data, VT1211_REG_ALARM1); 318 319 data->last_updated = jiffies; 320 data->valid = 1; 321 } 322 323 mutex_unlock(&data->update_lock); 324 325 return data; 326} 327 328/* --------------------------------------------------------------------- 329 * Voltage sysfs interfaces 330 * ix = [0-5] 331 * --------------------------------------------------------------------- */ 332 333#define SHOW_IN_INPUT 0 334#define SHOW_SET_IN_MIN 1 335#define SHOW_SET_IN_MAX 2 336#define SHOW_IN_ALARM 3 337 338static ssize_t show_in(struct device *dev, struct device_attribute *attr, 339 char *buf) 340{ 341 struct vt1211_data *data = vt1211_update_device(dev); 342 struct sensor_device_attribute_2 *sensor_attr_2 = 343 to_sensor_dev_attr_2(attr); 344 int ix = sensor_attr_2->index; 345 int fn = sensor_attr_2->nr; 346 int res; 347 348 switch (fn) { 349 case SHOW_IN_INPUT: 350 res = IN_FROM_REG(ix, data->in[ix]); 351 break; 352 case SHOW_SET_IN_MIN: 353 res = IN_FROM_REG(ix, data->in_min[ix]); 354 break; 355 case SHOW_SET_IN_MAX: 356 res = IN_FROM_REG(ix, data->in_max[ix]); 357 break; 358 case SHOW_IN_ALARM: 359 res = (data->alarms >> bitalarmin[ix]) & 1; 360 break; 361 default: 362 res = 0; 363 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 364 } 365 366 return sprintf(buf, "%d\n", res); 367} 368 369static ssize_t set_in(struct device *dev, struct device_attribute *attr, 370 const char *buf, size_t count) 371{ 372 struct vt1211_data *data = dev_get_drvdata(dev); 373 struct sensor_device_attribute_2 *sensor_attr_2 = 374 to_sensor_dev_attr_2(attr); 375 int ix = sensor_attr_2->index; 376 int fn = sensor_attr_2->nr; 377 long val = simple_strtol(buf, NULL, 10); 378 379 mutex_lock(&data->update_lock); 380 switch (fn) { 381 case SHOW_SET_IN_MIN: 382 data->in_min[ix] = IN_TO_REG(ix, val); 383 vt1211_write8(data, VT1211_REG_IN_MIN(ix), data->in_min[ix]); 384 break; 385 case SHOW_SET_IN_MAX: 386 data->in_max[ix] = IN_TO_REG(ix, val); 387 vt1211_write8(data, VT1211_REG_IN_MAX(ix), data->in_max[ix]); 388 break; 389 default: 390 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 391 } 392 mutex_unlock(&data->update_lock); 393 394 return count; 395} 396 397/* --------------------------------------------------------------------- 398 * Temperature sysfs interfaces 399 * ix = [0-6] 400 * --------------------------------------------------------------------- */ 401 402#define SHOW_TEMP_INPUT 0 403#define SHOW_SET_TEMP_MAX 1 404#define SHOW_SET_TEMP_MAX_HYST 2 405#define SHOW_TEMP_ALARM 3 406 407static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 408 char *buf) 409{ 410 struct vt1211_data *data = vt1211_update_device(dev); 411 struct sensor_device_attribute_2 *sensor_attr_2 = 412 to_sensor_dev_attr_2(attr); 413 int ix = sensor_attr_2->index; 414 int fn = sensor_attr_2->nr; 415 int res; 416 417 switch (fn) { 418 case SHOW_TEMP_INPUT: 419 res = TEMP_FROM_REG(ix, data->temp[ix]); 420 break; 421 case SHOW_SET_TEMP_MAX: 422 res = TEMP_FROM_REG(ix, data->temp_max[ix]); 423 break; 424 case SHOW_SET_TEMP_MAX_HYST: 425 res = TEMP_FROM_REG(ix, data->temp_hyst[ix]); 426 break; 427 case SHOW_TEMP_ALARM: 428 res = (data->alarms >> bitalarmtemp[ix]) & 1; 429 break; 430 default: 431 res = 0; 432 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 433 } 434 435 return sprintf(buf, "%d\n", res); 436} 437 438static ssize_t set_temp(struct device *dev, struct device_attribute *attr, 439 const char *buf, size_t count) 440{ 441 struct vt1211_data *data = dev_get_drvdata(dev); 442 struct sensor_device_attribute_2 *sensor_attr_2 = 443 to_sensor_dev_attr_2(attr); 444 int ix = sensor_attr_2->index; 445 int fn = sensor_attr_2->nr; 446 long val = simple_strtol(buf, NULL, 10); 447 448 mutex_lock(&data->update_lock); 449 switch (fn) { 450 case SHOW_SET_TEMP_MAX: 451 data->temp_max[ix] = TEMP_TO_REG(ix, val); 452 vt1211_write8(data, regtempmax[ix], 453 data->temp_max[ix]); 454 break; 455 case SHOW_SET_TEMP_MAX_HYST: 456 data->temp_hyst[ix] = TEMP_TO_REG(ix, val); 457 vt1211_write8(data, regtemphyst[ix], 458 data->temp_hyst[ix]); 459 break; 460 default: 461 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 462 } 463 mutex_unlock(&data->update_lock); 464 465 return count; 466} 467 468/* --------------------------------------------------------------------- 469 * Fan sysfs interfaces 470 * ix = [0-1] 471 * --------------------------------------------------------------------- */ 472 473#define SHOW_FAN_INPUT 0 474#define SHOW_SET_FAN_MIN 1 475#define SHOW_SET_FAN_DIV 2 476#define SHOW_FAN_ALARM 3 477 478static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 479 char *buf) 480{ 481 struct vt1211_data *data = vt1211_update_device(dev); 482 struct sensor_device_attribute_2 *sensor_attr_2 = 483 to_sensor_dev_attr_2(attr); 484 int ix = sensor_attr_2->index; 485 int fn = sensor_attr_2->nr; 486 int res; 487 488 switch (fn) { 489 case SHOW_FAN_INPUT: 490 res = RPM_FROM_REG(data->fan[ix], data->fan_div[ix]); 491 break; 492 case SHOW_SET_FAN_MIN: 493 res = RPM_FROM_REG(data->fan_min[ix], data->fan_div[ix]); 494 break; 495 case SHOW_SET_FAN_DIV: 496 res = DIV_FROM_REG(data->fan_div[ix]); 497 break; 498 case SHOW_FAN_ALARM: 499 res = (data->alarms >> bitalarmfan[ix]) & 1; 500 break; 501 default: 502 res = 0; 503 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 504 } 505 506 return sprintf(buf, "%d\n", res); 507} 508 509static ssize_t set_fan(struct device *dev, struct device_attribute *attr, 510 const char *buf, size_t count) 511{ 512 struct vt1211_data *data = dev_get_drvdata(dev); 513 struct sensor_device_attribute_2 *sensor_attr_2 = 514 to_sensor_dev_attr_2(attr); 515 int ix = sensor_attr_2->index; 516 int fn = sensor_attr_2->nr; 517 long val = simple_strtol(buf, NULL, 10); 518 int reg; 519 520 mutex_lock(&data->update_lock); 521 522 /* sync the data cache */ 523 reg = vt1211_read8(data, VT1211_REG_FAN_DIV); 524 data->fan_div[0] = (reg >> 4) & 3; 525 data->fan_div[1] = (reg >> 6) & 3; 526 data->fan_ctl = reg & 0xf; 527 528 switch (fn) { 529 case SHOW_SET_FAN_MIN: 530 data->fan_min[ix] = RPM_TO_REG(val, data->fan_div[ix]); 531 vt1211_write8(data, VT1211_REG_FAN_MIN(ix), 532 data->fan_min[ix]); 533 break; 534 case SHOW_SET_FAN_DIV: 535 switch (val) { 536 case 1: data->fan_div[ix] = 0; break; 537 case 2: data->fan_div[ix] = 1; break; 538 case 4: data->fan_div[ix] = 2; break; 539 case 8: data->fan_div[ix] = 3; break; 540 default: 541 count = -EINVAL; 542 dev_warn(dev, "fan div value %ld not " 543 "supported. Choose one of 1, 2, " 544 "4, or 8.\n", val); 545 goto EXIT; 546 } 547 vt1211_write8(data, VT1211_REG_FAN_DIV, 548 ((data->fan_div[1] << 6) | 549 (data->fan_div[0] << 4) | 550 data->fan_ctl)); 551 break; 552 default: 553 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 554 } 555 556EXIT: 557 mutex_unlock(&data->update_lock); 558 return count; 559} 560 561/* --------------------------------------------------------------------- 562 * PWM sysfs interfaces 563 * ix = [0-1] 564 * --------------------------------------------------------------------- */ 565 566#define SHOW_PWM 0 567#define SHOW_SET_PWM_ENABLE 1 568#define SHOW_SET_PWM_FREQ 2 569#define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3 570 571static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 572 char *buf) 573{ 574 struct vt1211_data *data = vt1211_update_device(dev); 575 struct sensor_device_attribute_2 *sensor_attr_2 = 576 to_sensor_dev_attr_2(attr); 577 int ix = sensor_attr_2->index; 578 int fn = sensor_attr_2->nr; 579 int res; 580 581 switch (fn) { 582 case SHOW_PWM: 583 res = data->pwm[ix]; 584 break; 585 case SHOW_SET_PWM_ENABLE: 586 res = ((data->pwm_ctl[ix] >> 3) & 1) ? 2 : 0; 587 break; 588 case SHOW_SET_PWM_FREQ: 589 res = 90000 >> (data->pwm_clk & 7); 590 break; 591 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP: 592 res = (data->pwm_ctl[ix] & 7) + 1; 593 break; 594 default: 595 res = 0; 596 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 597 } 598 599 return sprintf(buf, "%d\n", res); 600} 601 602static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 603 const char *buf, size_t count) 604{ 605 struct vt1211_data *data = dev_get_drvdata(dev); 606 struct sensor_device_attribute_2 *sensor_attr_2 = 607 to_sensor_dev_attr_2(attr); 608 int ix = sensor_attr_2->index; 609 int fn = sensor_attr_2->nr; 610 long val = simple_strtol(buf, NULL, 10); 611 int tmp, reg; 612 613 mutex_lock(&data->update_lock); 614 615 switch (fn) { 616 case SHOW_SET_PWM_ENABLE: 617 /* sync the data cache */ 618 reg = vt1211_read8(data, VT1211_REG_FAN_DIV); 619 data->fan_div[0] = (reg >> 4) & 3; 620 data->fan_div[1] = (reg >> 6) & 3; 621 data->fan_ctl = reg & 0xf; 622 reg = vt1211_read8(data, VT1211_REG_PWM_CTL); 623 data->pwm_ctl[0] = reg & 0xf; 624 data->pwm_ctl[1] = (reg >> 4) & 0xf; 625 switch (val) { 626 case 0: 627 data->pwm_ctl[ix] &= 7; 628 /* disable SmartGuardian if both PWM outputs are 629 * disabled */ 630 if ((data->pwm_ctl[ix ^ 1] & 1) == 0) { 631 data->fan_ctl &= 0xe; 632 } 633 break; 634 case 2: 635 data->pwm_ctl[ix] |= 8; 636 data->fan_ctl |= 1; 637 break; 638 default: 639 count = -EINVAL; 640 dev_warn(dev, "pwm mode %ld not supported. " 641 "Choose one of 0 or 2.\n", val); 642 goto EXIT; 643 } 644 vt1211_write8(data, VT1211_REG_PWM_CTL, 645 ((data->pwm_ctl[1] << 4) | 646 data->pwm_ctl[0])); 647 vt1211_write8(data, VT1211_REG_FAN_DIV, 648 ((data->fan_div[1] << 6) | 649 (data->fan_div[0] << 4) | 650 data->fan_ctl)); 651 break; 652 case SHOW_SET_PWM_FREQ: 653 val = 135000 / SENSORS_LIMIT(val, 135000 >> 7, 135000); 654 /* calculate tmp = log2(val) */ 655 tmp = 0; 656 for (val >>= 1; val > 0; val >>= 1) { 657 tmp++; 658 } 659 /* sync the data cache */ 660 reg = vt1211_read8(data, VT1211_REG_PWM_CLK); 661 data->pwm_clk = (reg & 0xf8) | tmp; 662 vt1211_write8(data, VT1211_REG_PWM_CLK, data->pwm_clk); 663 break; 664 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP: 665 if ((val < 1) || (val > 7)) { 666 count = -EINVAL; 667 dev_warn(dev, "temp channel %ld not supported. " 668 "Choose a value between 1 and 7.\n", val); 669 goto EXIT; 670 } 671 if (!ISTEMP(val - 1, data->uch_config)) { 672 count = -EINVAL; 673 dev_warn(dev, "temp channel %ld is not available.\n", 674 val); 675 goto EXIT; 676 } 677 /* sync the data cache */ 678 reg = vt1211_read8(data, VT1211_REG_PWM_CTL); 679 data->pwm_ctl[0] = reg & 0xf; 680 data->pwm_ctl[1] = (reg >> 4) & 0xf; 681 data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8) | (val - 1); 682 vt1211_write8(data, VT1211_REG_PWM_CTL, 683 ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0])); 684 break; 685 default: 686 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); 687 } 688 689EXIT: 690 mutex_unlock(&data->update_lock); 691 return count; 692} 693 694/* --------------------------------------------------------------------- 695 * PWM auto point definitions 696 * ix = [0-1] 697 * ap = [0-3] 698 * --------------------------------------------------------------------- */ 699 700/* 701 * pwm[ix+1]_auto_point[ap+1]_temp mapping table: 702 * Note that there is only a single set of temp auto points that controls both 703 * PWM controllers. We still create 2 sets of sysfs files to make it look 704 * more consistent even though they map to the same registers. 705 * 706 * ix ap : description 707 * ------------------- 708 * 0 0 : pwm1/2 off temperature (pwm_auto_temp[0]) 709 * 0 1 : pwm1/2 low speed temperature (pwm_auto_temp[1]) 710 * 0 2 : pwm1/2 high speed temperature (pwm_auto_temp[2]) 711 * 0 3 : pwm1/2 full speed temperature (pwm_auto_temp[3]) 712 * 1 0 : pwm1/2 off temperature (pwm_auto_temp[0]) 713 * 1 1 : pwm1/2 low speed temperature (pwm_auto_temp[1]) 714 * 1 2 : pwm1/2 high speed temperature (pwm_auto_temp[2]) 715 * 1 3 : pwm1/2 full speed temperature (pwm_auto_temp[3]) 716 */ 717 718static ssize_t show_pwm_auto_point_temp(struct device *dev, 719 struct device_attribute *attr, 720 char *buf) 721{ 722 struct vt1211_data *data = vt1211_update_device(dev); 723 struct sensor_device_attribute_2 *sensor_attr_2 = 724 to_sensor_dev_attr_2(attr); 725 int ix = sensor_attr_2->index; 726 int ap = sensor_attr_2->nr; 727 728 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->pwm_ctl[ix] & 7, 729 data->pwm_auto_temp[ap])); 730} 731 732static ssize_t set_pwm_auto_point_temp(struct device *dev, 733 struct device_attribute *attr, 734 const char *buf, size_t count) 735{ 736 struct vt1211_data *data = dev_get_drvdata(dev); 737 struct sensor_device_attribute_2 *sensor_attr_2 = 738 to_sensor_dev_attr_2(attr); 739 int ix = sensor_attr_2->index; 740 int ap = sensor_attr_2->nr; 741 long val = simple_strtol(buf, NULL, 10); 742 int reg; 743 744 mutex_lock(&data->update_lock); 745 746 /* sync the data cache */ 747 reg = vt1211_read8(data, VT1211_REG_PWM_CTL); 748 data->pwm_ctl[0] = reg & 0xf; 749 data->pwm_ctl[1] = (reg >> 4) & 0xf; 750 751 data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7, val); 752 vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap), 753 data->pwm_auto_temp[ap]); 754 mutex_unlock(&data->update_lock); 755 756 return count; 757} 758 759/* 760 * pwm[ix+1]_auto_point[ap+1]_pwm mapping table: 761 * Note that the PWM auto points 0 & 3 are hard-wired in the VT1211 and can't 762 * be changed. 763 * 764 * ix ap : description 765 * ------------------- 766 * 0 0 : pwm1 off (pwm_auto_pwm[0][0], hard-wired to 0) 767 * 0 1 : pwm1 low speed duty cycle (pwm_auto_pwm[0][1]) 768 * 0 2 : pwm1 high speed duty cycle (pwm_auto_pwm[0][2]) 769 * 0 3 : pwm1 full speed (pwm_auto_pwm[0][3], hard-wired to 255) 770 * 1 0 : pwm2 off (pwm_auto_pwm[1][0], hard-wired to 0) 771 * 1 1 : pwm2 low speed duty cycle (pwm_auto_pwm[1][1]) 772 * 1 2 : pwm2 high speed duty cycle (pwm_auto_pwm[1][2]) 773 * 1 3 : pwm2 full speed (pwm_auto_pwm[1][3], hard-wired to 255) 774*/ 775 776static ssize_t show_pwm_auto_point_pwm(struct device *dev, 777 struct device_attribute *attr, 778 char *buf) 779{ 780 struct vt1211_data *data = vt1211_update_device(dev); 781 struct sensor_device_attribute_2 *sensor_attr_2 = 782 to_sensor_dev_attr_2(attr); 783 int ix = sensor_attr_2->index; 784 int ap = sensor_attr_2->nr; 785 786 return sprintf(buf, "%d\n", data->pwm_auto_pwm[ix][ap]); 787} 788 789static ssize_t set_pwm_auto_point_pwm(struct device *dev, 790 struct device_attribute *attr, 791 const char *buf, size_t count) 792{ 793 struct vt1211_data *data = dev_get_drvdata(dev); 794 struct sensor_device_attribute_2 *sensor_attr_2 = 795 to_sensor_dev_attr_2(attr); 796 int ix = sensor_attr_2->index; 797 int ap = sensor_attr_2->nr; 798 long val = simple_strtol(buf, NULL, 10); 799 800 if ((val < 0) || (val > 255)) { 801 dev_err(dev, "pwm value %ld is out of range. " 802 "Choose a value between 0 and 255.\n" , val); 803 return -EINVAL; 804 } 805 806 mutex_lock(&data->update_lock); 807 data->pwm_auto_pwm[ix][ap] = val; 808 vt1211_write8(data, VT1211_REG_PWM_AUTO_PWM(ix, ap), 809 data->pwm_auto_pwm[ix][ap]); 810 mutex_unlock(&data->update_lock); 811 812 return count; 813} 814 815/* --------------------------------------------------------------------- 816 * Miscellaneous sysfs interfaces (VRM, VID, name, and (legacy) alarms) 817 * --------------------------------------------------------------------- */ 818 819static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, 820 char *buf) 821{ 822 struct vt1211_data *data = dev_get_drvdata(dev); 823 824 return sprintf(buf, "%d\n", data->vrm); 825} 826 827static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, 828 const char *buf, size_t count) 829{ 830 struct vt1211_data *data = dev_get_drvdata(dev); 831 long val = simple_strtol(buf, NULL, 10); 832 833 data->vrm = val; 834 835 return count; 836} 837 838static ssize_t show_vid(struct device *dev, struct device_attribute *attr, 839 char *buf) 840{ 841 struct vt1211_data *data = dev_get_drvdata(dev); 842 843 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 844} 845 846static ssize_t show_name(struct device *dev, 847 struct device_attribute *attr, char *buf) 848{ 849 struct vt1211_data *data = dev_get_drvdata(dev); 850 851 return sprintf(buf, "%s\n", data->name); 852} 853 854static ssize_t show_alarms(struct device *dev, 855 struct device_attribute *attr, char *buf) 856{ 857 struct vt1211_data *data = vt1211_update_device(dev); 858 859 return sprintf(buf, "%d\n", data->alarms); 860} 861 862/* --------------------------------------------------------------------- 863 * Device attribute structs 864 * --------------------------------------------------------------------- */ 865 866#define SENSOR_ATTR_IN_INPUT(ix) \ 867 SENSOR_ATTR_2(in##ix##_input, S_IRUGO, \ 868 show_in, NULL, SHOW_IN_INPUT, ix) 869 870static struct sensor_device_attribute_2 vt1211_sysfs_in_input[] = { 871 SENSOR_ATTR_IN_INPUT(0), 872 SENSOR_ATTR_IN_INPUT(1), 873 SENSOR_ATTR_IN_INPUT(2), 874 SENSOR_ATTR_IN_INPUT(3), 875 SENSOR_ATTR_IN_INPUT(4), 876 SENSOR_ATTR_IN_INPUT(5), 877}; 878 879#define SENSOR_ATTR_IN_MIN(ix) \ 880 SENSOR_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \ 881 show_in, set_in, SHOW_SET_IN_MIN, ix) 882 883static struct sensor_device_attribute_2 vt1211_sysfs_in_min[] = { 884 SENSOR_ATTR_IN_MIN(0), 885 SENSOR_ATTR_IN_MIN(1), 886 SENSOR_ATTR_IN_MIN(2), 887 SENSOR_ATTR_IN_MIN(3), 888 SENSOR_ATTR_IN_MIN(4), 889 SENSOR_ATTR_IN_MIN(5), 890}; 891 892#define SENSOR_ATTR_IN_MAX(ix) \ 893 SENSOR_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \ 894 show_in, set_in, SHOW_SET_IN_MAX, ix) 895 896static struct sensor_device_attribute_2 vt1211_sysfs_in_max[] = { 897 SENSOR_ATTR_IN_MAX(0), 898 SENSOR_ATTR_IN_MAX(1), 899 SENSOR_ATTR_IN_MAX(2), 900 SENSOR_ATTR_IN_MAX(3), 901 SENSOR_ATTR_IN_MAX(4), 902 SENSOR_ATTR_IN_MAX(5), 903}; 904 905#define SENSOR_ATTR_IN_ALARM(ix) \ 906 SENSOR_ATTR_2(in##ix##_alarm, S_IRUGO, \ 907 show_in, NULL, SHOW_IN_ALARM, ix) 908 909static struct sensor_device_attribute_2 vt1211_sysfs_in_alarm[] = { 910 SENSOR_ATTR_IN_ALARM(0), 911 SENSOR_ATTR_IN_ALARM(1), 912 SENSOR_ATTR_IN_ALARM(2), 913 SENSOR_ATTR_IN_ALARM(3), 914 SENSOR_ATTR_IN_ALARM(4), 915 SENSOR_ATTR_IN_ALARM(5), 916}; 917 918#define SENSOR_ATTR_TEMP_INPUT(ix) \ 919 SENSOR_ATTR_2(temp##ix##_input, S_IRUGO, \ 920 show_temp, NULL, SHOW_TEMP_INPUT, ix-1) 921 922static struct sensor_device_attribute_2 vt1211_sysfs_temp_input[] = { 923 SENSOR_ATTR_TEMP_INPUT(1), 924 SENSOR_ATTR_TEMP_INPUT(2), 925 SENSOR_ATTR_TEMP_INPUT(3), 926 SENSOR_ATTR_TEMP_INPUT(4), 927 SENSOR_ATTR_TEMP_INPUT(5), 928 SENSOR_ATTR_TEMP_INPUT(6), 929 SENSOR_ATTR_TEMP_INPUT(7), 930}; 931 932#define SENSOR_ATTR_TEMP_MAX(ix) \ 933 SENSOR_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \ 934 show_temp, set_temp, SHOW_SET_TEMP_MAX, ix-1) 935 936static struct sensor_device_attribute_2 vt1211_sysfs_temp_max[] = { 937 SENSOR_ATTR_TEMP_MAX(1), 938 SENSOR_ATTR_TEMP_MAX(2), 939 SENSOR_ATTR_TEMP_MAX(3), 940 SENSOR_ATTR_TEMP_MAX(4), 941 SENSOR_ATTR_TEMP_MAX(5), 942 SENSOR_ATTR_TEMP_MAX(6), 943 SENSOR_ATTR_TEMP_MAX(7), 944}; 945 946#define SENSOR_ATTR_TEMP_MAX_HYST(ix) \ 947 SENSOR_ATTR_2(temp##ix##_max_hyst, S_IRUGO | S_IWUSR, \ 948 show_temp, set_temp, SHOW_SET_TEMP_MAX_HYST, ix-1) 949 950static struct sensor_device_attribute_2 vt1211_sysfs_temp_max_hyst[] = { 951 SENSOR_ATTR_TEMP_MAX_HYST(1), 952 SENSOR_ATTR_TEMP_MAX_HYST(2), 953 SENSOR_ATTR_TEMP_MAX_HYST(3), 954 SENSOR_ATTR_TEMP_MAX_HYST(4), 955 SENSOR_ATTR_TEMP_MAX_HYST(5), 956 SENSOR_ATTR_TEMP_MAX_HYST(6), 957 SENSOR_ATTR_TEMP_MAX_HYST(7), 958}; 959 960#define SENSOR_ATTR_TEMP_ALARM(ix) \ 961 SENSOR_ATTR_2(temp##ix##_alarm, S_IRUGO, \ 962 show_temp, NULL, SHOW_TEMP_ALARM, ix-1) 963 964static struct sensor_device_attribute_2 vt1211_sysfs_temp_alarm[] = { 965 SENSOR_ATTR_TEMP_ALARM(1), 966 SENSOR_ATTR_TEMP_ALARM(2), 967 SENSOR_ATTR_TEMP_ALARM(3), 968 SENSOR_ATTR_TEMP_ALARM(4), 969 SENSOR_ATTR_TEMP_ALARM(5), 970 SENSOR_ATTR_TEMP_ALARM(6), 971 SENSOR_ATTR_TEMP_ALARM(7), 972}; 973 974#define SENSOR_ATTR_FAN(ix) \ 975 SENSOR_ATTR_2(fan##ix##_input, S_IRUGO, \ 976 show_fan, NULL, SHOW_FAN_INPUT, ix-1), \ 977 SENSOR_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \ 978 show_fan, set_fan, SHOW_SET_FAN_MIN, ix-1), \ 979 SENSOR_ATTR_2(fan##ix##_div, S_IRUGO | S_IWUSR, \ 980 show_fan, set_fan, SHOW_SET_FAN_DIV, ix-1), \ 981 SENSOR_ATTR_2(fan##ix##_alarm, S_IRUGO, \ 982 show_fan, NULL, SHOW_FAN_ALARM, ix-1) 983 984#define SENSOR_ATTR_PWM(ix) \ 985 SENSOR_ATTR_2(pwm##ix, S_IRUGO, \ 986 show_pwm, NULL, SHOW_PWM, ix-1), \ 987 SENSOR_ATTR_2(pwm##ix##_enable, S_IRUGO | S_IWUSR, \ 988 show_pwm, set_pwm, SHOW_SET_PWM_ENABLE, ix-1), \ 989 SENSOR_ATTR_2(pwm##ix##_auto_channels_temp, S_IRUGO | S_IWUSR, \ 990 show_pwm, set_pwm, SHOW_SET_PWM_AUTO_CHANNELS_TEMP, ix-1) 991 992#define SENSOR_ATTR_PWM_FREQ(ix) \ 993 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \ 994 show_pwm, set_pwm, SHOW_SET_PWM_FREQ, ix-1) 995 996#define SENSOR_ATTR_PWM_FREQ_RO(ix) \ 997 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO, \ 998 show_pwm, NULL, SHOW_SET_PWM_FREQ, ix-1) 999 1000#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP(ix, ap) \ 1001 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO | S_IWUSR, \ 1002 show_pwm_auto_point_temp, set_pwm_auto_point_temp, \ 1003 ap-1, ix-1) 1004 1005#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(ix, ap) \ 1006 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO, \ 1007 show_pwm_auto_point_temp, NULL, \ 1008 ap-1, ix-1) 1009 1010#define SENSOR_ATTR_PWM_AUTO_POINT_PWM(ix, ap) \ 1011 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO | S_IWUSR, \ 1012 show_pwm_auto_point_pwm, set_pwm_auto_point_pwm, \ 1013 ap-1, ix-1) 1014 1015#define SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(ix, ap) \ 1016 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO, \ 1017 show_pwm_auto_point_pwm, NULL, \ 1018 ap-1, ix-1) 1019 1020static struct sensor_device_attribute_2 vt1211_sysfs_fan_pwm[] = { 1021 SENSOR_ATTR_FAN(1), 1022 SENSOR_ATTR_FAN(2), 1023 SENSOR_ATTR_PWM(1), 1024 SENSOR_ATTR_PWM(2), 1025 SENSOR_ATTR_PWM_FREQ(1), 1026 SENSOR_ATTR_PWM_FREQ_RO(2), 1027 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 1), 1028 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 2), 1029 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 3), 1030 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 4), 1031 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 1), 1032 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 2), 1033 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 3), 1034 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 4), 1035 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 1), 1036 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 2), 1037 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 3), 1038 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 4), 1039 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 1), 1040 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 2), 1041 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 3), 1042 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 4), 1043}; 1044 1045static struct device_attribute vt1211_sysfs_misc[] = { 1046 __ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm), 1047 __ATTR(cpu0_vid, S_IRUGO, show_vid, NULL), 1048 __ATTR(name, S_IRUGO, show_name, NULL), 1049 __ATTR(alarms, S_IRUGO, show_alarms, NULL), 1050}; 1051 1052/* --------------------------------------------------------------------- 1053 * Device registration and initialization 1054 * --------------------------------------------------------------------- */ 1055 1056static void __devinit vt1211_init_device(struct vt1211_data *data) 1057{ 1058 /* set VRM */ 1059 data->vrm = vid_which_vrm(); 1060 1061 /* Read (and initialize) UCH config */ 1062 data->uch_config = vt1211_read8(data, VT1211_REG_UCH_CONFIG); 1063 if (uch_config > -1) { 1064 data->uch_config = (data->uch_config & 0x83) | 1065 (uch_config << 2); 1066 vt1211_write8(data, VT1211_REG_UCH_CONFIG, data->uch_config); 1067 } 1068 1069 /* Initialize the interrupt mode (if request at module load time). 1070 * The VT1211 implements 3 different modes for clearing interrupts: 1071 * 0: Clear INT when status register is read. Regenerate INT as long 1072 * as temp stays above hysteresis limit. 1073 * 1: Clear INT when status register is read. DON'T regenerate INT 1074 * until temp falls below hysteresis limit and exceeds hot limit 1075 * again. 1076 * 2: Clear INT when temp falls below max limit. 1077 * 1078 * The driver only allows to force mode 0 since that's the only one 1079 * that makes sense for 'sensors' */ 1080 if (int_mode == 0) { 1081 vt1211_write8(data, VT1211_REG_TEMP1_CONFIG, 0); 1082 vt1211_write8(data, VT1211_REG_TEMP2_CONFIG, 0); 1083 } 1084 1085 /* Fill in some hard wired values into our data struct */ 1086 data->pwm_auto_pwm[0][3] = 255; 1087 data->pwm_auto_pwm[1][3] = 255; 1088} 1089 1090static void vt1211_remove_sysfs(struct platform_device *pdev) 1091{ 1092 struct device *dev = &pdev->dev; 1093 int i; 1094 1095 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_in_input); i++) { 1096 device_remove_file(dev, 1097 &vt1211_sysfs_in_input[i].dev_attr); 1098 device_remove_file(dev, 1099 &vt1211_sysfs_in_min[i].dev_attr); 1100 device_remove_file(dev, 1101 &vt1211_sysfs_in_max[i].dev_attr); 1102 device_remove_file(dev, 1103 &vt1211_sysfs_in_alarm[i].dev_attr); 1104 } 1105 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_temp_input); i++) { 1106 device_remove_file(dev, 1107 &vt1211_sysfs_temp_input[i].dev_attr); 1108 device_remove_file(dev, 1109 &vt1211_sysfs_temp_max[i].dev_attr); 1110 device_remove_file(dev, 1111 &vt1211_sysfs_temp_max_hyst[i].dev_attr); 1112 device_remove_file(dev, 1113 &vt1211_sysfs_temp_alarm[i].dev_attr); 1114 } 1115 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) { 1116 device_remove_file(dev, 1117 &vt1211_sysfs_fan_pwm[i].dev_attr); 1118 } 1119 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) { 1120 device_remove_file(dev, &vt1211_sysfs_misc[i]); 1121 } 1122} 1123 1124static int __devinit vt1211_probe(struct platform_device *pdev) 1125{ 1126 struct device *dev = &pdev->dev; 1127 struct vt1211_data *data; 1128 struct resource *res; 1129 int i, err; 1130 1131 if (!(data = kzalloc(sizeof(struct vt1211_data), GFP_KERNEL))) { 1132 err = -ENOMEM; 1133 dev_err(dev, "Out of memory\n"); 1134 goto EXIT; 1135 } 1136 1137 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 1138 if (!request_region(res->start, res->end - res->start + 1, DRVNAME)) { 1139 err = -EBUSY; 1140 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 1141 (unsigned long)res->start, (unsigned long)res->end); 1142 goto EXIT_KFREE; 1143 } 1144 data->addr = res->start; 1145 data->name = DRVNAME; 1146 mutex_init(&data->update_lock); 1147 1148 platform_set_drvdata(pdev, data); 1149 1150 /* Initialize the VT1211 chip */ 1151 vt1211_init_device(data); 1152 1153 /* Create sysfs interface files */ 1154 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_in_input); i++) { 1155 if (ISVOLT(i, data->uch_config)) { 1156 if ((err = device_create_file(dev, 1157 &vt1211_sysfs_in_input[i].dev_attr)) || 1158 (err = device_create_file(dev, 1159 &vt1211_sysfs_in_min[i].dev_attr)) || 1160 (err = device_create_file(dev, 1161 &vt1211_sysfs_in_max[i].dev_attr)) || 1162 (err = device_create_file(dev, 1163 &vt1211_sysfs_in_alarm[i].dev_attr))) { 1164 goto EXIT_DEV_REMOVE; 1165 } 1166 } 1167 } 1168 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_temp_input); i++) { 1169 if (ISTEMP(i, data->uch_config)) { 1170 if ((err = device_create_file(dev, 1171 &vt1211_sysfs_temp_input[i].dev_attr)) || 1172 (err = device_create_file(dev, 1173 &vt1211_sysfs_temp_max[i].dev_attr)) || 1174 (err = device_create_file(dev, 1175 &vt1211_sysfs_temp_max_hyst[i].dev_attr)) || 1176 (err = device_create_file(dev, 1177 &vt1211_sysfs_temp_alarm[i].dev_attr))) { 1178 goto EXIT_DEV_REMOVE; 1179 } 1180 } 1181 } 1182 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) { 1183 err = device_create_file(dev, 1184 &vt1211_sysfs_fan_pwm[i].dev_attr); 1185 if (err) { 1186 goto EXIT_DEV_REMOVE; 1187 } 1188 } 1189 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) { 1190 err = device_create_file(dev, 1191 &vt1211_sysfs_misc[i]); 1192 if (err) { 1193 goto EXIT_DEV_REMOVE; 1194 } 1195 } 1196 1197 /* Register device */ 1198 data->hwmon_dev = hwmon_device_register(dev); 1199 if (IS_ERR(data->hwmon_dev)) { 1200 err = PTR_ERR(data->hwmon_dev); 1201 dev_err(dev, "Class registration failed (%d)\n", err); 1202 goto EXIT_DEV_REMOVE_SILENT; 1203 } 1204 1205 return 0; 1206 1207EXIT_DEV_REMOVE: 1208 dev_err(dev, "Sysfs interface creation failed (%d)\n", err); 1209EXIT_DEV_REMOVE_SILENT: 1210 vt1211_remove_sysfs(pdev); 1211 release_region(res->start, res->end - res->start + 1); 1212EXIT_KFREE: 1213 platform_set_drvdata(pdev, NULL); 1214 kfree(data); 1215EXIT: 1216 return err; 1217} 1218 1219static int __devexit vt1211_remove(struct platform_device *pdev) 1220{ 1221 struct vt1211_data *data = platform_get_drvdata(pdev); 1222 struct resource *res; 1223 1224 hwmon_device_unregister(data->hwmon_dev); 1225 vt1211_remove_sysfs(pdev); 1226 platform_set_drvdata(pdev, NULL); 1227 kfree(data); 1228 1229 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 1230 release_region(res->start, res->end - res->start + 1); 1231 1232 return 0; 1233} 1234 1235static struct platform_driver vt1211_driver = { 1236 .driver = { 1237 .owner = THIS_MODULE, 1238 .name = DRVNAME, 1239 }, 1240 .probe = vt1211_probe, 1241 .remove = __devexit_p(vt1211_remove), 1242}; 1243 1244static int __init vt1211_device_add(unsigned short address) 1245{ 1246 struct resource res = { 1247 .start = address, 1248 .end = address + 0x7f, 1249 .flags = IORESOURCE_IO, 1250 }; 1251 int err; 1252 1253 pdev = platform_device_alloc(DRVNAME, address); 1254 if (!pdev) { 1255 err = -ENOMEM; 1256 printk(KERN_ERR DRVNAME ": Device allocation failed (%d)\n", 1257 err); 1258 goto EXIT; 1259 } 1260 1261 res.name = pdev->name; 1262 err = platform_device_add_resources(pdev, &res, 1); 1263 if (err) { 1264 printk(KERN_ERR DRVNAME ": Device resource addition failed " 1265 "(%d)\n", err); 1266 goto EXIT_DEV_PUT; 1267 } 1268 1269 err = platform_device_add(pdev); 1270 if (err) { 1271 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", 1272 err); 1273 goto EXIT_DEV_PUT; 1274 } 1275 1276 return 0; 1277 1278EXIT_DEV_PUT: 1279 platform_device_put(pdev); 1280EXIT: 1281 return err; 1282} 1283 1284static int __init vt1211_find(int sio_cip, unsigned short *address) 1285{ 1286 int err = -ENODEV; 1287 int devid; 1288 1289 superio_enter(sio_cip); 1290 1291 devid = force_id ? force_id : superio_inb(sio_cip, SIO_VT1211_DEVID); 1292 if (devid != SIO_VT1211_ID) { 1293 goto EXIT; 1294 } 1295 1296 superio_select(sio_cip, SIO_VT1211_LDN_HWMON); 1297 1298 if ((superio_inb(sio_cip, SIO_VT1211_ACTIVE) & 1) == 0) { 1299 printk(KERN_WARNING DRVNAME ": HW monitor is disabled, " 1300 "skipping\n"); 1301 goto EXIT; 1302 } 1303 1304 *address = ((superio_inb(sio_cip, SIO_VT1211_BADDR) << 8) | 1305 (superio_inb(sio_cip, SIO_VT1211_BADDR + 1))) & 0xff00; 1306 if (*address == 0) { 1307 printk(KERN_WARNING DRVNAME ": Base address is not set, " 1308 "skipping\n"); 1309 goto EXIT; 1310 } 1311 1312 err = 0; 1313 printk(KERN_INFO DRVNAME ": Found VT1211 chip at 0x%04x, " 1314 "revision %u\n", *address, 1315 superio_inb(sio_cip, SIO_VT1211_DEVREV)); 1316 1317EXIT: 1318 superio_exit(sio_cip); 1319 return err; 1320} 1321 1322static int __init vt1211_init(void) 1323{ 1324 int err; 1325 unsigned short address = 0; 1326 1327 if ((err = vt1211_find(SIO_REG_CIP1, &address)) && 1328 (err = vt1211_find(SIO_REG_CIP2, &address))) { 1329 goto EXIT; 1330 } 1331 1332 if ((uch_config < -1) || (uch_config > 31)) { 1333 err = -EINVAL; 1334 printk(KERN_WARNING DRVNAME ": Invalid UCH configuration %d. " 1335 "Choose a value between 0 and 31.\n", uch_config); 1336 goto EXIT; 1337 } 1338 1339 if ((int_mode < -1) || (int_mode > 0)) { 1340 err = -EINVAL; 1341 printk(KERN_WARNING DRVNAME ": Invalid interrupt mode %d. " 1342 "Only mode 0 is supported.\n", int_mode); 1343 goto EXIT; 1344 } 1345 1346 err = platform_driver_register(&vt1211_driver); 1347 if (err) { 1348 goto EXIT; 1349 } 1350 1351 /* Sets global pdev as a side effect */ 1352 err = vt1211_device_add(address); 1353 if (err) { 1354 goto EXIT_DRV_UNREGISTER; 1355 } 1356 1357 return 0; 1358 1359EXIT_DRV_UNREGISTER: 1360 platform_driver_unregister(&vt1211_driver); 1361EXIT: 1362 return err; 1363} 1364 1365static void __exit vt1211_exit(void) 1366{ 1367 platform_device_unregister(pdev); 1368 platform_driver_unregister(&vt1211_driver); 1369} 1370 1371MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>"); 1372MODULE_DESCRIPTION("VT1211 sensors"); 1373MODULE_LICENSE("GPL"); 1374 1375module_init(vt1211_init); 1376module_exit(vt1211_exit); 1377