1 /* 2 sis5595.c - Part of lm_sensors, Linux kernel modules 3 for hardware monitoring 4 5 Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, 6 Ky�sti M�lkki <kmalkki@cc.hut.fi>, and 7 Mark D. Studebaker <mdsxyz123@yahoo.com> 8 Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with 9 the help of Jean Delvare <khali@linux-fr.org> 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; either version 2 of the License, or 14 (at your option) any later version. 15 16 This program is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 GNU General Public License for more details. 20 21 You should have received a copy of the GNU General Public License 22 along with this program; if not, write to the Free Software 23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 */ 25 26 /* 27 SiS southbridge has a LM78-like chip integrated on the same IC. 28 This driver is a customized copy of lm78.c 29 30 Supports following revisions: 31 Version PCI ID PCI Revision 32 1 1039/0008 AF or less 33 2 1039/0008 B0 or greater 34 35 Note: these chips contain a 0008 device which is incompatible with the 36 5595. We recognize these by the presence of the listed 37 "blacklist" PCI ID and refuse to load. 38 39 NOT SUPPORTED PCI ID BLACKLIST PCI ID 40 540 0008 0540 41 550 0008 0550 42 5513 0008 5511 43 5581 0008 5597 44 5582 0008 5597 45 5597 0008 5597 46 5598 0008 5597/5598 47 630 0008 0630 48 645 0008 0645 49 730 0008 0730 50 735 0008 0735 51 */ 52 53 #include <linux/module.h> 54 #include <linux/slab.h> 55 #include <linux/ioport.h> 56 #include <linux/pci.h> 57 #include <linux/i2c.h> 58 #include <linux/i2c-isa.h> 59 #include <linux/hwmon.h> 60 #include <linux/err.h> 61 #include <linux/init.h> 62 #include <linux/jiffies.h> 63 #include <asm/io.h> 64 65 66 /* If force_addr is set to anything different from 0, we forcibly enable 67 the device at the given address. */ 68 static u16 force_addr; 69 module_param(force_addr, ushort, 0); 70 MODULE_PARM_DESC(force_addr, 71 "Initialize the base address of the sensors"); 72 73 /* Device address 74 Note that we can't determine the ISA address until we have initialized 75 our module */ 76 static unsigned short address; 77 78 /* Many SIS5595 constants specified below */ 79 80 /* Length of ISA address segment */ 81 #define SIS5595_EXTENT 8 82 /* PCI Config Registers */ 83 #define SIS5595_REVISION_REG 0x08 84 #define SIS5595_BASE_REG 0x68 85 #define SIS5595_PIN_REG 0x7A 86 #define SIS5595_ENABLE_REG 0x7B 87 88 /* Where are the ISA address/data registers relative to the base address */ 89 #define SIS5595_ADDR_REG_OFFSET 5 90 #define SIS5595_DATA_REG_OFFSET 6 91 92 /* The SIS5595 registers */ 93 #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) 94 #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) 95 #define SIS5595_REG_IN(nr) (0x20 + (nr)) 96 97 #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) 98 #define SIS5595_REG_FAN(nr) (0x28 + (nr)) 99 100 /* On the first version of the chip, the temp registers are separate. 101 On the second version, 102 TEMP pin is shared with IN4, configured in PCI register 0x7A. 103 The registers are the same as well. 104 OVER and HYST are really MAX and MIN. */ 105 106 #define REV2MIN 0xb0 107 #define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \ 108 SIS5595_REG_IN(4) : 0x27 109 #define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \ 110 SIS5595_REG_IN_MAX(4) : 0x39 111 #define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \ 112 SIS5595_REG_IN_MIN(4) : 0x3a 113 114 #define SIS5595_REG_CONFIG 0x40 115 #define SIS5595_REG_ALARM1 0x41 116 #define SIS5595_REG_ALARM2 0x42 117 #define SIS5595_REG_FANDIV 0x47 118 119 /* Conversions. Limit checking is only done on the TO_REG 120 variants. */ 121 122 /* IN: mV, (0V to 4.08V) 123 REG: 16mV/bit */ 124 static inline u8 IN_TO_REG(unsigned long val) 125 { 126 unsigned long nval = SENSORS_LIMIT(val, 0, 4080); 127 return (nval + 8) / 16; 128 } 129 #define IN_FROM_REG(val) ((val) * 16) 130 131 static inline u8 FAN_TO_REG(long rpm, int div) 132 { 133 if (rpm <= 0) 134 return 255; 135 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); 136 } 137 138 static inline int FAN_FROM_REG(u8 val, int div) 139 { 140 return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div); 141 } 142 143 /* TEMP: mC (-54.12C to +157.53C) 144 REG: 0.83C/bit + 52.12, two's complement */ 145 static inline int TEMP_FROM_REG(s8 val) 146 { 147 return val * 830 + 52120; 148 } 149 static inline s8 TEMP_TO_REG(int val) 150 { 151 int nval = SENSORS_LIMIT(val, -54120, 157530) ; 152 return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830; 153 } 154 155 /* FAN DIV: 1, 2, 4, or 8 (defaults to 2) 156 REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */ 157 static inline u8 DIV_TO_REG(int val) 158 { 159 return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1; 160 } 161 #define DIV_FROM_REG(val) (1 << (val)) 162 163 /* For the SIS5595, we need to keep some data in memory. That 164 data is pointed to by sis5595_list[NR]->data. The structure itself is 165 dynamically allocated, at the time when the new sis5595 client is 166 allocated. */ 167 struct sis5595_data { 168 struct i2c_client client; 169 struct class_device *class_dev; 170 struct semaphore lock; 171 172 struct semaphore update_lock; 173 char valid; /* !=0 if following fields are valid */ 174 unsigned long last_updated; /* In jiffies */ 175 char maxins; /* == 3 if temp enabled, otherwise == 4 */ 176 u8 revision; /* Reg. value */ 177 178 u8 in[5]; /* Register value */ 179 u8 in_max[5]; /* Register value */ 180 u8 in_min[5]; /* Register value */ 181 u8 fan[2]; /* Register value */ 182 u8 fan_min[2]; /* Register value */ 183 s8 temp; /* Register value */ 184 s8 temp_over; /* Register value */ 185 s8 temp_hyst; /* Register value */ 186 u8 fan_div[2]; /* Register encoding, shifted right */ 187 u16 alarms; /* Register encoding, combined */ 188 }; 189 190 static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ 191 192 static int sis5595_detect(struct i2c_adapter *adapter); 193 static int sis5595_detach_client(struct i2c_client *client); 194 195 static int sis5595_read_value(struct i2c_client *client, u8 register); 196 static int sis5595_write_value(struct i2c_client *client, u8 register, u8 value); 197 static struct sis5595_data *sis5595_update_device(struct device *dev); 198 static void sis5595_init_client(struct i2c_client *client); 199 200 static struct i2c_driver sis5595_driver = { 201 .driver = { 202 .name = "sis5595", 203 }, 204 .attach_adapter = sis5595_detect, 205 .detach_client = sis5595_detach_client, 206 }; 207 208 /* 4 Voltages */ 209 static ssize_t show_in(struct device *dev, char *buf, int nr) 210 { 211 struct sis5595_data *data = sis5595_update_device(dev); 212 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); 213 } 214 215 static ssize_t show_in_min(struct device *dev, char *buf, int nr) 216 { 217 struct sis5595_data *data = sis5595_update_device(dev); 218 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); 219 } 220 221 static ssize_t show_in_max(struct device *dev, char *buf, int nr) 222 { 223 struct sis5595_data *data = sis5595_update_device(dev); 224 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); 225 } 226 227 static ssize_t set_in_min(struct device *dev, const char *buf, 228 size_t count, int nr) 229 { 230 struct i2c_client *client = to_i2c_client(dev); 231 struct sis5595_data *data = i2c_get_clientdata(client); 232 unsigned long val = simple_strtoul(buf, NULL, 10); 233 234 down(&data->update_lock); 235 data->in_min[nr] = IN_TO_REG(val); 236 sis5595_write_value(client, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); 237 up(&data->update_lock); 238 return count; 239 } 240 241 static ssize_t set_in_max(struct device *dev, const char *buf, 242 size_t count, int nr) 243 { 244 struct i2c_client *client = to_i2c_client(dev); 245 struct sis5595_data *data = i2c_get_clientdata(client); 246 unsigned long val = simple_strtoul(buf, NULL, 10); 247 248 down(&data->update_lock); 249 data->in_max[nr] = IN_TO_REG(val); 250 sis5595_write_value(client, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); 251 up(&data->update_lock); 252 return count; 253 } 254 255 #define show_in_offset(offset) \ 256 static ssize_t \ 257 show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 258 { \ 259 return show_in(dev, buf, offset); \ 260 } \ 261 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 262 show_in##offset, NULL); \ 263 static ssize_t \ 264 show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 265 { \ 266 return show_in_min(dev, buf, offset); \ 267 } \ 268 static ssize_t \ 269 show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 270 { \ 271 return show_in_max(dev, buf, offset); \ 272 } \ 273 static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \ 274 const char *buf, size_t count) \ 275 { \ 276 return set_in_min(dev, buf, count, offset); \ 277 } \ 278 static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \ 279 const char *buf, size_t count) \ 280 { \ 281 return set_in_max(dev, buf, count, offset); \ 282 } \ 283 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 284 show_in##offset##_min, set_in##offset##_min); \ 285 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 286 show_in##offset##_max, set_in##offset##_max); 287 288 show_in_offset(0); 289 show_in_offset(1); 290 show_in_offset(2); 291 show_in_offset(3); 292 show_in_offset(4); 293 294 /* Temperature */ 295 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) 296 { 297 struct sis5595_data *data = sis5595_update_device(dev); 298 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); 299 } 300 301 static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf) 302 { 303 struct sis5595_data *data = sis5595_update_device(dev); 304 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); 305 } 306 307 static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 308 { 309 struct i2c_client *client = to_i2c_client(dev); 310 struct sis5595_data *data = i2c_get_clientdata(client); 311 long val = simple_strtol(buf, NULL, 10); 312 313 down(&data->update_lock); 314 data->temp_over = TEMP_TO_REG(val); 315 sis5595_write_value(client, SIS5595_REG_TEMP_OVER, data->temp_over); 316 up(&data->update_lock); 317 return count; 318 } 319 320 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf) 321 { 322 struct sis5595_data *data = sis5595_update_device(dev); 323 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); 324 } 325 326 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 327 { 328 struct i2c_client *client = to_i2c_client(dev); 329 struct sis5595_data *data = i2c_get_clientdata(client); 330 long val = simple_strtol(buf, NULL, 10); 331 332 down(&data->update_lock); 333 data->temp_hyst = TEMP_TO_REG(val); 334 sis5595_write_value(client, SIS5595_REG_TEMP_HYST, data->temp_hyst); 335 up(&data->update_lock); 336 return count; 337 } 338 339 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); 340 static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, 341 show_temp_over, set_temp_over); 342 static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, 343 show_temp_hyst, set_temp_hyst); 344 345 /* 2 Fans */ 346 static ssize_t show_fan(struct device *dev, char *buf, int nr) 347 { 348 struct sis5595_data *data = sis5595_update_device(dev); 349 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 350 DIV_FROM_REG(data->fan_div[nr])) ); 351 } 352 353 static ssize_t show_fan_min(struct device *dev, char *buf, int nr) 354 { 355 struct sis5595_data *data = sis5595_update_device(dev); 356 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr], 357 DIV_FROM_REG(data->fan_div[nr])) ); 358 } 359 360 static ssize_t set_fan_min(struct device *dev, const char *buf, 361 size_t count, int nr) 362 { 363 struct i2c_client *client = to_i2c_client(dev); 364 struct sis5595_data *data = i2c_get_clientdata(client); 365 unsigned long val = simple_strtoul(buf, NULL, 10); 366 367 down(&data->update_lock); 368 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 369 sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); 370 up(&data->update_lock); 371 return count; 372 } 373 374 static ssize_t show_fan_div(struct device *dev, char *buf, int nr) 375 { 376 struct sis5595_data *data = sis5595_update_device(dev); 377 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) ); 378 } 379 380 /* Note: we save and restore the fan minimum here, because its value is 381 determined in part by the fan divisor. This follows the principle of 382 least suprise; the user doesn't expect the fan minimum to change just 383 because the divisor changed. */ 384 static ssize_t set_fan_div(struct device *dev, const char *buf, 385 size_t count, int nr) 386 { 387 struct i2c_client *client = to_i2c_client(dev); 388 struct sis5595_data *data = i2c_get_clientdata(client); 389 unsigned long min; 390 unsigned long val = simple_strtoul(buf, NULL, 10); 391 int reg; 392 393 down(&data->update_lock); 394 min = FAN_FROM_REG(data->fan_min[nr], 395 DIV_FROM_REG(data->fan_div[nr])); 396 reg = sis5595_read_value(client, SIS5595_REG_FANDIV); 397 398 switch (val) { 399 case 1: data->fan_div[nr] = 0; break; 400 case 2: data->fan_div[nr] = 1; break; 401 case 4: data->fan_div[nr] = 2; break; 402 case 8: data->fan_div[nr] = 3; break; 403 default: 404 dev_err(&client->dev, "fan_div value %ld not " 405 "supported. Choose one of 1, 2, 4 or 8!\n", val); 406 up(&data->update_lock); 407 return -EINVAL; 408 } 409 410 switch (nr) { 411 case 0: 412 reg = (reg & 0xcf) | (data->fan_div[nr] << 4); 413 break; 414 case 1: 415 reg = (reg & 0x3f) | (data->fan_div[nr] << 6); 416 break; 417 } 418 sis5595_write_value(client, SIS5595_REG_FANDIV, reg); 419 data->fan_min[nr] = 420 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); 421 sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); 422 up(&data->update_lock); 423 return count; 424 } 425 426 #define show_fan_offset(offset) \ 427 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 428 { \ 429 return show_fan(dev, buf, offset - 1); \ 430 } \ 431 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 432 { \ 433 return show_fan_min(dev, buf, offset - 1); \ 434 } \ 435 static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \ 436 { \ 437 return show_fan_div(dev, buf, offset - 1); \ 438 } \ 439 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ 440 const char *buf, size_t count) \ 441 { \ 442 return set_fan_min(dev, buf, count, offset - 1); \ 443 } \ 444 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\ 445 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 446 show_fan_##offset##_min, set_fan_##offset##_min); 447 448 show_fan_offset(1); 449 show_fan_offset(2); 450 451 static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf, 452 size_t count) 453 { 454 return set_fan_div(dev, buf, count, 0) ; 455 } 456 457 static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf, 458 size_t count) 459 { 460 return set_fan_div(dev, buf, count, 1) ; 461 } 462 static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, 463 show_fan_1_div, set_fan_1_div); 464 static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, 465 show_fan_2_div, set_fan_2_div); 466 467 /* Alarms */ 468 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) 469 { 470 struct sis5595_data *data = sis5595_update_device(dev); 471 return sprintf(buf, "%d\n", data->alarms); 472 } 473 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 474 475 /* This is called when the module is loaded */ 476 static int sis5595_detect(struct i2c_adapter *adapter) 477 { 478 int err = 0; 479 int i; 480 struct i2c_client *new_client; 481 struct sis5595_data *data; 482 char val; 483 u16 a; 484 485 if (force_addr) 486 address = force_addr & ~(SIS5595_EXTENT - 1); 487 /* Reserve the ISA region */ 488 if (!request_region(address, SIS5595_EXTENT, 489 sis5595_driver.driver.name)) { 490 err = -EBUSY; 491 goto exit; 492 } 493 if (force_addr) { 494 dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address); 495 if (PCIBIOS_SUCCESSFUL != 496 pci_write_config_word(s_bridge, SIS5595_BASE_REG, address)) 497 goto exit_release; 498 if (PCIBIOS_SUCCESSFUL != 499 pci_read_config_word(s_bridge, SIS5595_BASE_REG, &a)) 500 goto exit_release; 501 if ((a & ~(SIS5595_EXTENT - 1)) != address) 502 /* doesn't work for some chips? */ 503 goto exit_release; 504 } 505 506 if (PCIBIOS_SUCCESSFUL != 507 pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) { 508 goto exit_release; 509 } 510 if ((val & 0x80) == 0) { 511 if (PCIBIOS_SUCCESSFUL != 512 pci_write_config_byte(s_bridge, SIS5595_ENABLE_REG, 513 val | 0x80)) 514 goto exit_release; 515 if (PCIBIOS_SUCCESSFUL != 516 pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) 517 goto exit_release; 518 if ((val & 0x80) == 0) 519 /* doesn't work for some chips! */ 520 goto exit_release; 521 } 522 523 if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) { 524 err = -ENOMEM; 525 goto exit_release; 526 } 527 528 new_client = &data->client; 529 new_client->addr = address; 530 init_MUTEX(&data->lock); 531 i2c_set_clientdata(new_client, data); 532 new_client->adapter = adapter; 533 new_client->driver = &sis5595_driver; 534 new_client->flags = 0; 535 536 /* Check revision and pin registers to determine whether 4 or 5 voltages */ 537 pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision)); 538 /* 4 voltages, 1 temp */ 539 data->maxins = 3; 540 if (data->revision >= REV2MIN) { 541 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); 542 if (!(val & 0x80)) 543 /* 5 voltages, no temps */ 544 data->maxins = 4; 545 } 546 547 /* Fill in the remaining client fields and put it into the global list */ 548 strlcpy(new_client->name, "sis5595", I2C_NAME_SIZE); 549 550 data->valid = 0; 551 init_MUTEX(&data->update_lock); 552 553 /* Tell the I2C layer a new client has arrived */ 554 if ((err = i2c_attach_client(new_client))) 555 goto exit_free; 556 557 /* Initialize the SIS5595 chip */ 558 sis5595_init_client(new_client); 559 560 /* A few vars need to be filled upon startup */ 561 for (i = 0; i < 2; i++) { 562 data->fan_min[i] = sis5595_read_value(new_client, 563 SIS5595_REG_FAN_MIN(i)); 564 } 565 566 /* Register sysfs hooks */ 567 data->class_dev = hwmon_device_register(&new_client->dev); 568 if (IS_ERR(data->class_dev)) { 569 err = PTR_ERR(data->class_dev); 570 goto exit_detach; 571 } 572 573 device_create_file(&new_client->dev, &dev_attr_in0_input); 574 device_create_file(&new_client->dev, &dev_attr_in0_min); 575 device_create_file(&new_client->dev, &dev_attr_in0_max); 576 device_create_file(&new_client->dev, &dev_attr_in1_input); 577 device_create_file(&new_client->dev, &dev_attr_in1_min); 578 device_create_file(&new_client->dev, &dev_attr_in1_max); 579 device_create_file(&new_client->dev, &dev_attr_in2_input); 580 device_create_file(&new_client->dev, &dev_attr_in2_min); 581 device_create_file(&new_client->dev, &dev_attr_in2_max); 582 device_create_file(&new_client->dev, &dev_attr_in3_input); 583 device_create_file(&new_client->dev, &dev_attr_in3_min); 584 device_create_file(&new_client->dev, &dev_attr_in3_max); 585 if (data->maxins == 4) { 586 device_create_file(&new_client->dev, &dev_attr_in4_input); 587 device_create_file(&new_client->dev, &dev_attr_in4_min); 588 device_create_file(&new_client->dev, &dev_attr_in4_max); 589 } 590 device_create_file(&new_client->dev, &dev_attr_fan1_input); 591 device_create_file(&new_client->dev, &dev_attr_fan1_min); 592 device_create_file(&new_client->dev, &dev_attr_fan1_div); 593 device_create_file(&new_client->dev, &dev_attr_fan2_input); 594 device_create_file(&new_client->dev, &dev_attr_fan2_min); 595 device_create_file(&new_client->dev, &dev_attr_fan2_div); 596 device_create_file(&new_client->dev, &dev_attr_alarms); 597 if (data->maxins == 3) { 598 device_create_file(&new_client->dev, &dev_attr_temp1_input); 599 device_create_file(&new_client->dev, &dev_attr_temp1_max); 600 device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst); 601 } 602 return 0; 603 604 exit_detach: 605 i2c_detach_client(new_client); 606 exit_free: 607 kfree(data); 608 exit_release: 609 release_region(address, SIS5595_EXTENT); 610 exit: 611 return err; 612 } 613 614 static int sis5595_detach_client(struct i2c_client *client) 615 { 616 struct sis5595_data *data = i2c_get_clientdata(client); 617 int err; 618 619 hwmon_device_unregister(data->class_dev); 620 621 if ((err = i2c_detach_client(client))) 622 return err; 623 624 release_region(client->addr, SIS5595_EXTENT); 625 626 kfree(data); 627 628 return 0; 629 } 630 631 632 /* ISA access must be locked explicitly. */ 633 static int sis5595_read_value(struct i2c_client *client, u8 reg) 634 { 635 int res; 636 637 struct sis5595_data *data = i2c_get_clientdata(client); 638 down(&data->lock); 639 outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); 640 res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET); 641 up(&data->lock); 642 return res; 643 } 644 645 static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value) 646 { 647 struct sis5595_data *data = i2c_get_clientdata(client); 648 down(&data->lock); 649 outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); 650 outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET); 651 up(&data->lock); 652 return 0; 653 } 654 655 /* Called when we have found a new SIS5595. */ 656 static void sis5595_init_client(struct i2c_client *client) 657 { 658 u8 config = sis5595_read_value(client, SIS5595_REG_CONFIG); 659 if (!(config & 0x01)) 660 sis5595_write_value(client, SIS5595_REG_CONFIG, 661 (config & 0xf7) | 0x01); 662 } 663 664 static struct sis5595_data *sis5595_update_device(struct device *dev) 665 { 666 struct i2c_client *client = to_i2c_client(dev); 667 struct sis5595_data *data = i2c_get_clientdata(client); 668 int i; 669 670 down(&data->update_lock); 671 672 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 673 || !data->valid) { 674 675 for (i = 0; i <= data->maxins; i++) { 676 data->in[i] = 677 sis5595_read_value(client, SIS5595_REG_IN(i)); 678 data->in_min[i] = 679 sis5595_read_value(client, 680 SIS5595_REG_IN_MIN(i)); 681 data->in_max[i] = 682 sis5595_read_value(client, 683 SIS5595_REG_IN_MAX(i)); 684 } 685 for (i = 0; i < 2; i++) { 686 data->fan[i] = 687 sis5595_read_value(client, SIS5595_REG_FAN(i)); 688 data->fan_min[i] = 689 sis5595_read_value(client, 690 SIS5595_REG_FAN_MIN(i)); 691 } 692 if (data->maxins == 3) { 693 data->temp = 694 sis5595_read_value(client, SIS5595_REG_TEMP); 695 data->temp_over = 696 sis5595_read_value(client, SIS5595_REG_TEMP_OVER); 697 data->temp_hyst = 698 sis5595_read_value(client, SIS5595_REG_TEMP_HYST); 699 } 700 i = sis5595_read_value(client, SIS5595_REG_FANDIV); 701 data->fan_div[0] = (i >> 4) & 0x03; 702 data->fan_div[1] = i >> 6; 703 data->alarms = 704 sis5595_read_value(client, SIS5595_REG_ALARM1) | 705 (sis5595_read_value(client, SIS5595_REG_ALARM2) << 8); 706 data->last_updated = jiffies; 707 data->valid = 1; 708 } 709 710 up(&data->update_lock); 711 712 return data; 713 } 714 715 static struct pci_device_id sis5595_pci_ids[] = { 716 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, 717 { 0, } 718 }; 719 720 MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); 721 722 static int blacklist[] __devinitdata = { 723 PCI_DEVICE_ID_SI_540, 724 PCI_DEVICE_ID_SI_550, 725 PCI_DEVICE_ID_SI_630, 726 PCI_DEVICE_ID_SI_645, 727 PCI_DEVICE_ID_SI_730, 728 PCI_DEVICE_ID_SI_735, 729 PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but 730 that ID shows up in other chips so we 731 use the 5511 ID for recognition */ 732 PCI_DEVICE_ID_SI_5597, 733 PCI_DEVICE_ID_SI_5598, 734 0 }; 735 736 static int __devinit sis5595_pci_probe(struct pci_dev *dev, 737 const struct pci_device_id *id) 738 { 739 u16 val; 740 int *i; 741 742 for (i = blacklist; *i != 0; i++) { 743 struct pci_dev *dev; 744 dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL); 745 if (dev) { 746 dev_err(&dev->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i); 747 pci_dev_put(dev); 748 return -ENODEV; 749 } 750 } 751 752 if (PCIBIOS_SUCCESSFUL != 753 pci_read_config_word(dev, SIS5595_BASE_REG, &val)) 754 return -ENODEV; 755 756 address = val & ~(SIS5595_EXTENT - 1); 757 if (address == 0 && force_addr == 0) { 758 dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); 759 return -ENODEV; 760 } 761 762 s_bridge = pci_dev_get(dev); 763 if (i2c_isa_add_driver(&sis5595_driver)) { 764 pci_dev_put(s_bridge); 765 s_bridge = NULL; 766 } 767 768 /* Always return failure here. This is to allow other drivers to bind 769 * to this pci device. We don't really want to have control over the 770 * pci device, we only wanted to read as few register values from it. 771 */ 772 return -ENODEV; 773 } 774 775 static struct pci_driver sis5595_pci_driver = { 776 .name = "sis5595", 777 .id_table = sis5595_pci_ids, 778 .probe = sis5595_pci_probe, 779 }; 780 781 static int __init sm_sis5595_init(void) 782 { 783 return pci_register_driver(&sis5595_pci_driver); 784 } 785 786 static void __exit sm_sis5595_exit(void) 787 { 788 pci_unregister_driver(&sis5595_pci_driver); 789 if (s_bridge != NULL) { 790 i2c_isa_del_driver(&sis5595_driver); 791 pci_dev_put(s_bridge); 792 s_bridge = NULL; 793 } 794 } 795 796 MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); 797 MODULE_DESCRIPTION("SiS 5595 Sensor device"); 798 MODULE_LICENSE("GPL"); 799 800 module_init(sm_sis5595_init); 801 module_exit(sm_sis5595_exit); 802