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-sensor.h> 59 #include <linux/init.h> 60 #include <linux/jiffies.h> 61 #include <asm/io.h> 62 63 64 /* If force_addr is set to anything different from 0, we forcibly enable 65 the device at the given address. */ 66 static u16 force_addr; 67 module_param(force_addr, ushort, 0); 68 MODULE_PARM_DESC(force_addr, 69 "Initialize the base address of the sensors"); 70 71 /* Addresses to scan. 72 Note that we can't determine the ISA address until we have initialized 73 our module */ 74 static unsigned short normal_i2c[] = { I2C_CLIENT_END }; 75 static unsigned int normal_isa[] = { 0x0000, I2C_CLIENT_ISA_END }; 76 77 /* Insmod parameters */ 78 SENSORS_INSMOD_1(sis5595); 79 80 /* Many SIS5595 constants specified below */ 81 82 /* Length of ISA address segment */ 83 #define SIS5595_EXTENT 8 84 /* PCI Config Registers */ 85 #define SIS5595_REVISION_REG 0x08 86 #define SIS5595_BASE_REG 0x68 87 #define SIS5595_PIN_REG 0x7A 88 #define SIS5595_ENABLE_REG 0x7B 89 90 /* Where are the ISA address/data registers relative to the base address */ 91 #define SIS5595_ADDR_REG_OFFSET 5 92 #define SIS5595_DATA_REG_OFFSET 6 93 94 /* The SIS5595 registers */ 95 #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) 96 #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) 97 #define SIS5595_REG_IN(nr) (0x20 + (nr)) 98 99 #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) 100 #define SIS5595_REG_FAN(nr) (0x28 + (nr)) 101 102 /* On the first version of the chip, the temp registers are separate. 103 On the second version, 104 TEMP pin is shared with IN4, configured in PCI register 0x7A. 105 The registers are the same as well. 106 OVER and HYST are really MAX and MIN. */ 107 108 #define REV2MIN 0xb0 109 #define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \ 110 SIS5595_REG_IN(4) : 0x27 111 #define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \ 112 SIS5595_REG_IN_MAX(4) : 0x39 113 #define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \ 114 SIS5595_REG_IN_MIN(4) : 0x3a 115 116 #define SIS5595_REG_CONFIG 0x40 117 #define SIS5595_REG_ALARM1 0x41 118 #define SIS5595_REG_ALARM2 0x42 119 #define SIS5595_REG_FANDIV 0x47 120 121 /* Conversions. Limit checking is only done on the TO_REG 122 variants. */ 123 124 /* IN: mV, (0V to 4.08V) 125 REG: 16mV/bit */ 126 static inline u8 IN_TO_REG(unsigned long val) 127 { 128 unsigned long nval = SENSORS_LIMIT(val, 0, 4080); 129 return (nval + 8) / 16; 130 } 131 #define IN_FROM_REG(val) ((val) * 16) 132 133 static inline u8 FAN_TO_REG(long rpm, int div) 134 { 135 if (rpm <= 0) 136 return 255; 137 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); 138 } 139 140 static inline int FAN_FROM_REG(u8 val, int div) 141 { 142 return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div); 143 } 144 145 /* TEMP: mC (-54.12C to +157.53C) 146 REG: 0.83C/bit + 52.12, two's complement */ 147 static inline int TEMP_FROM_REG(s8 val) 148 { 149 return val * 830 + 52120; 150 } 151 static inline s8 TEMP_TO_REG(int val) 152 { 153 int nval = SENSORS_LIMIT(val, -54120, 157530) ; 154 return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830; 155 } 156 157 /* FAN DIV: 1, 2, 4, or 8 (defaults to 2) 158 REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */ 159 static inline u8 DIV_TO_REG(int val) 160 { 161 return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1; 162 } 163 #define DIV_FROM_REG(val) (1 << (val)) 164 165 /* For the SIS5595, we need to keep some data in memory. That 166 data is pointed to by sis5595_list[NR]->data. The structure itself is 167 dynamically allocated, at the time when the new sis5595 client is 168 allocated. */ 169 struct sis5595_data { 170 struct i2c_client client; 171 struct semaphore lock; 172 173 struct semaphore update_lock; 174 char valid; /* !=0 if following fields are valid */ 175 unsigned long last_updated; /* In jiffies */ 176 char maxins; /* == 3 if temp enabled, otherwise == 4 */ 177 u8 revision; /* Reg. value */ 178 179 u8 in[5]; /* Register value */ 180 u8 in_max[5]; /* Register value */ 181 u8 in_min[5]; /* Register value */ 182 u8 fan[2]; /* Register value */ 183 u8 fan_min[2]; /* Register value */ 184 s8 temp; /* Register value */ 185 s8 temp_over; /* Register value */ 186 s8 temp_hyst; /* Register value */ 187 u8 fan_div[2]; /* Register encoding, shifted right */ 188 u16 alarms; /* Register encoding, combined */ 189 }; 190 191 static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ 192 193 static int sis5595_attach_adapter(struct i2c_adapter *adapter); 194 static int sis5595_detect(struct i2c_adapter *adapter, int address, int kind); 195 static int sis5595_detach_client(struct i2c_client *client); 196 197 static int sis5595_read_value(struct i2c_client *client, u8 register); 198 static int sis5595_write_value(struct i2c_client *client, u8 register, u8 value); 199 static struct sis5595_data *sis5595_update_device(struct device *dev); 200 static void sis5595_init_client(struct i2c_client *client); 201 202 static struct i2c_driver sis5595_driver = { 203 .owner = THIS_MODULE, 204 .name = "sis5595", 205 .id = I2C_DRIVERID_SIS5595, 206 .flags = I2C_DF_NOTIFY, 207 .attach_adapter = sis5595_attach_adapter, 208 .detach_client = sis5595_detach_client, 209 }; 210 211 /* 4 Voltages */ 212 static ssize_t show_in(struct device *dev, char *buf, int nr) 213 { 214 struct sis5595_data *data = sis5595_update_device(dev); 215 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); 216 } 217 218 static ssize_t show_in_min(struct device *dev, char *buf, int nr) 219 { 220 struct sis5595_data *data = sis5595_update_device(dev); 221 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); 222 } 223 224 static ssize_t show_in_max(struct device *dev, char *buf, int nr) 225 { 226 struct sis5595_data *data = sis5595_update_device(dev); 227 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); 228 } 229 230 static ssize_t set_in_min(struct device *dev, const char *buf, 231 size_t count, int nr) 232 { 233 struct i2c_client *client = to_i2c_client(dev); 234 struct sis5595_data *data = i2c_get_clientdata(client); 235 unsigned long val = simple_strtoul(buf, NULL, 10); 236 237 down(&data->update_lock); 238 data->in_min[nr] = IN_TO_REG(val); 239 sis5595_write_value(client, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); 240 up(&data->update_lock); 241 return count; 242 } 243 244 static ssize_t set_in_max(struct device *dev, const char *buf, 245 size_t count, int nr) 246 { 247 struct i2c_client *client = to_i2c_client(dev); 248 struct sis5595_data *data = i2c_get_clientdata(client); 249 unsigned long val = simple_strtoul(buf, NULL, 10); 250 251 down(&data->update_lock); 252 data->in_max[nr] = IN_TO_REG(val); 253 sis5595_write_value(client, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); 254 up(&data->update_lock); 255 return count; 256 } 257 258 #define show_in_offset(offset) \ 259 static ssize_t \ 260 show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 261 { \ 262 return show_in(dev, buf, offset); \ 263 } \ 264 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 265 show_in##offset, NULL); \ 266 static ssize_t \ 267 show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 268 { \ 269 return show_in_min(dev, buf, offset); \ 270 } \ 271 static ssize_t \ 272 show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 273 { \ 274 return show_in_max(dev, buf, offset); \ 275 } \ 276 static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \ 277 const char *buf, size_t count) \ 278 { \ 279 return set_in_min(dev, buf, count, offset); \ 280 } \ 281 static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \ 282 const char *buf, size_t count) \ 283 { \ 284 return set_in_max(dev, buf, count, offset); \ 285 } \ 286 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 287 show_in##offset##_min, set_in##offset##_min); \ 288 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 289 show_in##offset##_max, set_in##offset##_max); 290 291 show_in_offset(0); 292 show_in_offset(1); 293 show_in_offset(2); 294 show_in_offset(3); 295 show_in_offset(4); 296 297 /* Temperature */ 298 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) 299 { 300 struct sis5595_data *data = sis5595_update_device(dev); 301 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); 302 } 303 304 static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf) 305 { 306 struct sis5595_data *data = sis5595_update_device(dev); 307 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); 308 } 309 310 static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 311 { 312 struct i2c_client *client = to_i2c_client(dev); 313 struct sis5595_data *data = i2c_get_clientdata(client); 314 long val = simple_strtol(buf, NULL, 10); 315 316 down(&data->update_lock); 317 data->temp_over = TEMP_TO_REG(val); 318 sis5595_write_value(client, SIS5595_REG_TEMP_OVER, data->temp_over); 319 up(&data->update_lock); 320 return count; 321 } 322 323 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf) 324 { 325 struct sis5595_data *data = sis5595_update_device(dev); 326 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); 327 } 328 329 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 330 { 331 struct i2c_client *client = to_i2c_client(dev); 332 struct sis5595_data *data = i2c_get_clientdata(client); 333 long val = simple_strtol(buf, NULL, 10); 334 335 down(&data->update_lock); 336 data->temp_hyst = TEMP_TO_REG(val); 337 sis5595_write_value(client, SIS5595_REG_TEMP_HYST, data->temp_hyst); 338 up(&data->update_lock); 339 return count; 340 } 341 342 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); 343 static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, 344 show_temp_over, set_temp_over); 345 static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, 346 show_temp_hyst, set_temp_hyst); 347 348 /* 2 Fans */ 349 static ssize_t show_fan(struct device *dev, char *buf, int nr) 350 { 351 struct sis5595_data *data = sis5595_update_device(dev); 352 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 353 DIV_FROM_REG(data->fan_div[nr])) ); 354 } 355 356 static ssize_t show_fan_min(struct device *dev, char *buf, int nr) 357 { 358 struct sis5595_data *data = sis5595_update_device(dev); 359 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr], 360 DIV_FROM_REG(data->fan_div[nr])) ); 361 } 362 363 static ssize_t set_fan_min(struct device *dev, const char *buf, 364 size_t count, int nr) 365 { 366 struct i2c_client *client = to_i2c_client(dev); 367 struct sis5595_data *data = i2c_get_clientdata(client); 368 unsigned long val = simple_strtoul(buf, NULL, 10); 369 370 down(&data->update_lock); 371 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 372 sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); 373 up(&data->update_lock); 374 return count; 375 } 376 377 static ssize_t show_fan_div(struct device *dev, char *buf, int nr) 378 { 379 struct sis5595_data *data = sis5595_update_device(dev); 380 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) ); 381 } 382 383 /* Note: we save and restore the fan minimum here, because its value is 384 determined in part by the fan divisor. This follows the principle of 385 least suprise; the user doesn't expect the fan minimum to change just 386 because the divisor changed. */ 387 static ssize_t set_fan_div(struct device *dev, const char *buf, 388 size_t count, int nr) 389 { 390 struct i2c_client *client = to_i2c_client(dev); 391 struct sis5595_data *data = i2c_get_clientdata(client); 392 unsigned long min; 393 unsigned long val = simple_strtoul(buf, NULL, 10); 394 int reg; 395 396 down(&data->update_lock); 397 min = FAN_FROM_REG(data->fan_min[nr], 398 DIV_FROM_REG(data->fan_div[nr])); 399 reg = sis5595_read_value(client, SIS5595_REG_FANDIV); 400 401 switch (val) { 402 case 1: data->fan_div[nr] = 0; break; 403 case 2: data->fan_div[nr] = 1; break; 404 case 4: data->fan_div[nr] = 2; break; 405 case 8: data->fan_div[nr] = 3; break; 406 default: 407 dev_err(&client->dev, "fan_div value %ld not " 408 "supported. Choose one of 1, 2, 4 or 8!\n", val); 409 up(&data->update_lock); 410 return -EINVAL; 411 } 412 413 switch (nr) { 414 case 0: 415 reg = (reg & 0xcf) | (data->fan_div[nr] << 4); 416 break; 417 case 1: 418 reg = (reg & 0x3f) | (data->fan_div[nr] << 6); 419 break; 420 } 421 sis5595_write_value(client, SIS5595_REG_FANDIV, reg); 422 data->fan_min[nr] = 423 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); 424 sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); 425 up(&data->update_lock); 426 return count; 427 } 428 429 #define show_fan_offset(offset) \ 430 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 431 { \ 432 return show_fan(dev, buf, offset - 1); \ 433 } \ 434 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 435 { \ 436 return show_fan_min(dev, buf, offset - 1); \ 437 } \ 438 static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \ 439 { \ 440 return show_fan_div(dev, buf, offset - 1); \ 441 } \ 442 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ 443 const char *buf, size_t count) \ 444 { \ 445 return set_fan_min(dev, buf, count, offset - 1); \ 446 } \ 447 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\ 448 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 449 show_fan_##offset##_min, set_fan_##offset##_min); 450 451 show_fan_offset(1); 452 show_fan_offset(2); 453 454 static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf, 455 size_t count) 456 { 457 return set_fan_div(dev, buf, count, 0) ; 458 } 459 460 static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf, 461 size_t count) 462 { 463 return set_fan_div(dev, buf, count, 1) ; 464 } 465 static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, 466 show_fan_1_div, set_fan_1_div); 467 static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, 468 show_fan_2_div, set_fan_2_div); 469 470 /* Alarms */ 471 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) 472 { 473 struct sis5595_data *data = sis5595_update_device(dev); 474 return sprintf(buf, "%d\n", data->alarms); 475 } 476 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 477 478 /* This is called when the module is loaded */ 479 static int sis5595_attach_adapter(struct i2c_adapter *adapter) 480 { 481 if (!(adapter->class & I2C_CLASS_HWMON)) 482 return 0; 483 return i2c_detect(adapter, &addr_data, sis5595_detect); 484 } 485 486 int sis5595_detect(struct i2c_adapter *adapter, int address, int kind) 487 { 488 int err = 0; 489 int i; 490 struct i2c_client *new_client; 491 struct sis5595_data *data; 492 char val; 493 u16 a; 494 495 /* Make sure we are probing the ISA bus!! */ 496 if (!i2c_is_isa_adapter(adapter)) 497 goto exit; 498 499 if (force_addr) 500 address = force_addr & ~(SIS5595_EXTENT - 1); 501 /* Reserve the ISA region */ 502 if (!request_region(address, SIS5595_EXTENT, sis5595_driver.name)) { 503 err = -EBUSY; 504 goto exit; 505 } 506 if (force_addr) { 507 dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address); 508 if (PCIBIOS_SUCCESSFUL != 509 pci_write_config_word(s_bridge, SIS5595_BASE_REG, address)) 510 goto exit_release; 511 if (PCIBIOS_SUCCESSFUL != 512 pci_read_config_word(s_bridge, SIS5595_BASE_REG, &a)) 513 goto exit_release; 514 if ((a & ~(SIS5595_EXTENT - 1)) != address) 515 /* doesn't work for some chips? */ 516 goto exit_release; 517 } 518 519 if (PCIBIOS_SUCCESSFUL != 520 pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) { 521 goto exit_release; 522 } 523 if ((val & 0x80) == 0) { 524 if (PCIBIOS_SUCCESSFUL != 525 pci_write_config_byte(s_bridge, SIS5595_ENABLE_REG, 526 val | 0x80)) 527 goto exit_release; 528 if (PCIBIOS_SUCCESSFUL != 529 pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) 530 goto exit_release; 531 if ((val & 0x80) == 0) 532 /* doesn't work for some chips! */ 533 goto exit_release; 534 } 535 536 if (!(data = kmalloc(sizeof(struct sis5595_data), GFP_KERNEL))) { 537 err = -ENOMEM; 538 goto exit_release; 539 } 540 memset(data, 0, sizeof(struct sis5595_data)); 541 542 new_client = &data->client; 543 new_client->addr = address; 544 init_MUTEX(&data->lock); 545 i2c_set_clientdata(new_client, data); 546 new_client->adapter = adapter; 547 new_client->driver = &sis5595_driver; 548 new_client->flags = 0; 549 550 /* Check revision and pin registers to determine whether 4 or 5 voltages */ 551 pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision)); 552 /* 4 voltages, 1 temp */ 553 data->maxins = 3; 554 if (data->revision >= REV2MIN) { 555 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); 556 if (!(val & 0x80)) 557 /* 5 voltages, no temps */ 558 data->maxins = 4; 559 } 560 561 /* Fill in the remaining client fields and put it into the global list */ 562 strlcpy(new_client->name, "sis5595", I2C_NAME_SIZE); 563 564 data->valid = 0; 565 init_MUTEX(&data->update_lock); 566 567 /* Tell the I2C layer a new client has arrived */ 568 if ((err = i2c_attach_client(new_client))) 569 goto exit_free; 570 571 /* Initialize the SIS5595 chip */ 572 sis5595_init_client(new_client); 573 574 /* A few vars need to be filled upon startup */ 575 for (i = 0; i < 2; i++) { 576 data->fan_min[i] = sis5595_read_value(new_client, 577 SIS5595_REG_FAN_MIN(i)); 578 } 579 580 /* Register sysfs hooks */ 581 device_create_file(&new_client->dev, &dev_attr_in0_input); 582 device_create_file(&new_client->dev, &dev_attr_in0_min); 583 device_create_file(&new_client->dev, &dev_attr_in0_max); 584 device_create_file(&new_client->dev, &dev_attr_in1_input); 585 device_create_file(&new_client->dev, &dev_attr_in1_min); 586 device_create_file(&new_client->dev, &dev_attr_in1_max); 587 device_create_file(&new_client->dev, &dev_attr_in2_input); 588 device_create_file(&new_client->dev, &dev_attr_in2_min); 589 device_create_file(&new_client->dev, &dev_attr_in2_max); 590 device_create_file(&new_client->dev, &dev_attr_in3_input); 591 device_create_file(&new_client->dev, &dev_attr_in3_min); 592 device_create_file(&new_client->dev, &dev_attr_in3_max); 593 if (data->maxins == 4) { 594 device_create_file(&new_client->dev, &dev_attr_in4_input); 595 device_create_file(&new_client->dev, &dev_attr_in4_min); 596 device_create_file(&new_client->dev, &dev_attr_in4_max); 597 } 598 device_create_file(&new_client->dev, &dev_attr_fan1_input); 599 device_create_file(&new_client->dev, &dev_attr_fan1_min); 600 device_create_file(&new_client->dev, &dev_attr_fan1_div); 601 device_create_file(&new_client->dev, &dev_attr_fan2_input); 602 device_create_file(&new_client->dev, &dev_attr_fan2_min); 603 device_create_file(&new_client->dev, &dev_attr_fan2_div); 604 device_create_file(&new_client->dev, &dev_attr_alarms); 605 if (data->maxins == 3) { 606 device_create_file(&new_client->dev, &dev_attr_temp1_input); 607 device_create_file(&new_client->dev, &dev_attr_temp1_max); 608 device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst); 609 } 610 return 0; 611 612 exit_free: 613 kfree(data); 614 exit_release: 615 release_region(address, SIS5595_EXTENT); 616 exit: 617 return err; 618 } 619 620 static int sis5595_detach_client(struct i2c_client *client) 621 { 622 int err; 623 624 if ((err = i2c_detach_client(client))) { 625 dev_err(&client->dev, 626 "Client deregistration failed, client not detached.\n"); 627 return err; 628 } 629 630 if (i2c_is_isa_client(client)) 631 release_region(client->addr, SIS5595_EXTENT); 632 633 kfree(i2c_get_clientdata(client)); 634 635 return 0; 636 } 637 638 639 /* ISA access must be locked explicitly. */ 640 static int sis5595_read_value(struct i2c_client *client, u8 reg) 641 { 642 int res; 643 644 struct sis5595_data *data = i2c_get_clientdata(client); 645 down(&data->lock); 646 outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); 647 res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET); 648 up(&data->lock); 649 return res; 650 } 651 652 static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value) 653 { 654 struct sis5595_data *data = i2c_get_clientdata(client); 655 down(&data->lock); 656 outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); 657 outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET); 658 up(&data->lock); 659 return 0; 660 } 661 662 /* Called when we have found a new SIS5595. */ 663 static void sis5595_init_client(struct i2c_client *client) 664 { 665 u8 config = sis5595_read_value(client, SIS5595_REG_CONFIG); 666 if (!(config & 0x01)) 667 sis5595_write_value(client, SIS5595_REG_CONFIG, 668 (config & 0xf7) | 0x01); 669 } 670 671 static struct sis5595_data *sis5595_update_device(struct device *dev) 672 { 673 struct i2c_client *client = to_i2c_client(dev); 674 struct sis5595_data *data = i2c_get_clientdata(client); 675 int i; 676 677 down(&data->update_lock); 678 679 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 680 || !data->valid) { 681 682 for (i = 0; i <= data->maxins; i++) { 683 data->in[i] = 684 sis5595_read_value(client, SIS5595_REG_IN(i)); 685 data->in_min[i] = 686 sis5595_read_value(client, 687 SIS5595_REG_IN_MIN(i)); 688 data->in_max[i] = 689 sis5595_read_value(client, 690 SIS5595_REG_IN_MAX(i)); 691 } 692 for (i = 0; i < 2; i++) { 693 data->fan[i] = 694 sis5595_read_value(client, SIS5595_REG_FAN(i)); 695 data->fan_min[i] = 696 sis5595_read_value(client, 697 SIS5595_REG_FAN_MIN(i)); 698 } 699 if (data->maxins == 3) { 700 data->temp = 701 sis5595_read_value(client, SIS5595_REG_TEMP); 702 data->temp_over = 703 sis5595_read_value(client, SIS5595_REG_TEMP_OVER); 704 data->temp_hyst = 705 sis5595_read_value(client, SIS5595_REG_TEMP_HYST); 706 } 707 i = sis5595_read_value(client, SIS5595_REG_FANDIV); 708 data->fan_div[0] = (i >> 4) & 0x03; 709 data->fan_div[1] = i >> 6; 710 data->alarms = 711 sis5595_read_value(client, SIS5595_REG_ALARM1) | 712 (sis5595_read_value(client, SIS5595_REG_ALARM2) << 8); 713 data->last_updated = jiffies; 714 data->valid = 1; 715 } 716 717 up(&data->update_lock); 718 719 return data; 720 } 721 722 static struct pci_device_id sis5595_pci_ids[] = { 723 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, 724 { 0, } 725 }; 726 727 MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); 728 729 static int blacklist[] __devinitdata = { 730 PCI_DEVICE_ID_SI_540, 731 PCI_DEVICE_ID_SI_550, 732 PCI_DEVICE_ID_SI_630, 733 PCI_DEVICE_ID_SI_645, 734 PCI_DEVICE_ID_SI_730, 735 PCI_DEVICE_ID_SI_735, 736 PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but 737 that ID shows up in other chips so we 738 use the 5511 ID for recognition */ 739 PCI_DEVICE_ID_SI_5597, 740 PCI_DEVICE_ID_SI_5598, 741 0 }; 742 743 static int __devinit sis5595_pci_probe(struct pci_dev *dev, 744 const struct pci_device_id *id) 745 { 746 u16 val; 747 int *i; 748 int addr = 0; 749 750 for (i = blacklist; *i != 0; i++) { 751 struct pci_dev *dev; 752 dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL); 753 if (dev) { 754 dev_err(&dev->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i); 755 pci_dev_put(dev); 756 return -ENODEV; 757 } 758 } 759 760 if (PCIBIOS_SUCCESSFUL != 761 pci_read_config_word(dev, SIS5595_BASE_REG, &val)) 762 return -ENODEV; 763 764 addr = val & ~(SIS5595_EXTENT - 1); 765 if (addr == 0 && force_addr == 0) { 766 dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); 767 return -ENODEV; 768 } 769 if (force_addr) 770 addr = force_addr; /* so detect will get called */ 771 772 if (!addr) { 773 dev_err(&dev->dev,"No SiS 5595 sensors found.\n"); 774 return -ENODEV; 775 } 776 normal_isa[0] = addr; 777 778 s_bridge = pci_dev_get(dev); 779 if (i2c_add_driver(&sis5595_driver)) { 780 pci_dev_put(s_bridge); 781 s_bridge = NULL; 782 } 783 784 /* Always return failure here. This is to allow other drivers to bind 785 * to this pci device. We don't really want to have control over the 786 * pci device, we only wanted to read as few register values from it. 787 */ 788 return -ENODEV; 789 } 790 791 static struct pci_driver sis5595_pci_driver = { 792 .name = "sis5595", 793 .id_table = sis5595_pci_ids, 794 .probe = sis5595_pci_probe, 795 }; 796 797 static int __init sm_sis5595_init(void) 798 { 799 return pci_register_driver(&sis5595_pci_driver); 800 } 801 802 static void __exit sm_sis5595_exit(void) 803 { 804 pci_unregister_driver(&sis5595_pci_driver); 805 if (s_bridge != NULL) { 806 i2c_del_driver(&sis5595_driver); 807 pci_dev_put(s_bridge); 808 s_bridge = NULL; 809 } 810 } 811 812 MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); 813 MODULE_DESCRIPTION("SiS 5595 Sensor device"); 814 MODULE_LICENSE("GPL"); 815 816 module_init(sm_sis5595_init); 817 module_exit(sm_sis5595_exit); 818