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 <linux/mutex.h> 64 #include <linux/sysfs.h> 65 #include <asm/io.h> 66 67 68 /* If force_addr is set to anything different from 0, we forcibly enable 69 the device at the given address. */ 70 static u16 force_addr; 71 module_param(force_addr, ushort, 0); 72 MODULE_PARM_DESC(force_addr, 73 "Initialize the base address of the sensors"); 74 75 /* Device address 76 Note that we can't determine the ISA address until we have initialized 77 our module */ 78 static unsigned short address; 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 each registered chip, we need to keep some data in memory. 166 The structure is dynamically allocated. */ 167 struct sis5595_data { 168 struct i2c_client client; 169 struct class_device *class_dev; 170 struct mutex lock; 171 172 struct mutex 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 reg); 196 static int sis5595_write_value(struct i2c_client *client, u8 reg, 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 .owner = THIS_MODULE, 203 .name = "sis5595", 204 }, 205 .attach_adapter = sis5595_detect, 206 .detach_client = sis5595_detach_client, 207 }; 208 209 /* 4 Voltages */ 210 static ssize_t show_in(struct device *dev, char *buf, int nr) 211 { 212 struct sis5595_data *data = sis5595_update_device(dev); 213 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); 214 } 215 216 static ssize_t show_in_min(struct device *dev, char *buf, int nr) 217 { 218 struct sis5595_data *data = sis5595_update_device(dev); 219 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); 220 } 221 222 static ssize_t show_in_max(struct device *dev, char *buf, int nr) 223 { 224 struct sis5595_data *data = sis5595_update_device(dev); 225 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); 226 } 227 228 static ssize_t set_in_min(struct device *dev, const char *buf, 229 size_t count, int nr) 230 { 231 struct i2c_client *client = to_i2c_client(dev); 232 struct sis5595_data *data = i2c_get_clientdata(client); 233 unsigned long val = simple_strtoul(buf, NULL, 10); 234 235 mutex_lock(&data->update_lock); 236 data->in_min[nr] = IN_TO_REG(val); 237 sis5595_write_value(client, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); 238 mutex_unlock(&data->update_lock); 239 return count; 240 } 241 242 static ssize_t set_in_max(struct device *dev, const char *buf, 243 size_t count, int nr) 244 { 245 struct i2c_client *client = to_i2c_client(dev); 246 struct sis5595_data *data = i2c_get_clientdata(client); 247 unsigned long val = simple_strtoul(buf, NULL, 10); 248 249 mutex_lock(&data->update_lock); 250 data->in_max[nr] = IN_TO_REG(val); 251 sis5595_write_value(client, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); 252 mutex_unlock(&data->update_lock); 253 return count; 254 } 255 256 #define show_in_offset(offset) \ 257 static ssize_t \ 258 show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 259 { \ 260 return show_in(dev, buf, offset); \ 261 } \ 262 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 263 show_in##offset, NULL); \ 264 static ssize_t \ 265 show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 266 { \ 267 return show_in_min(dev, buf, offset); \ 268 } \ 269 static ssize_t \ 270 show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 271 { \ 272 return show_in_max(dev, buf, offset); \ 273 } \ 274 static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \ 275 const char *buf, size_t count) \ 276 { \ 277 return set_in_min(dev, buf, count, offset); \ 278 } \ 279 static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \ 280 const char *buf, size_t count) \ 281 { \ 282 return set_in_max(dev, buf, count, offset); \ 283 } \ 284 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 285 show_in##offset##_min, set_in##offset##_min); \ 286 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 287 show_in##offset##_max, set_in##offset##_max); 288 289 show_in_offset(0); 290 show_in_offset(1); 291 show_in_offset(2); 292 show_in_offset(3); 293 show_in_offset(4); 294 295 /* Temperature */ 296 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) 297 { 298 struct sis5595_data *data = sis5595_update_device(dev); 299 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); 300 } 301 302 static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf) 303 { 304 struct sis5595_data *data = sis5595_update_device(dev); 305 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); 306 } 307 308 static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 309 { 310 struct i2c_client *client = to_i2c_client(dev); 311 struct sis5595_data *data = i2c_get_clientdata(client); 312 long val = simple_strtol(buf, NULL, 10); 313 314 mutex_lock(&data->update_lock); 315 data->temp_over = TEMP_TO_REG(val); 316 sis5595_write_value(client, SIS5595_REG_TEMP_OVER, data->temp_over); 317 mutex_unlock(&data->update_lock); 318 return count; 319 } 320 321 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf) 322 { 323 struct sis5595_data *data = sis5595_update_device(dev); 324 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); 325 } 326 327 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 328 { 329 struct i2c_client *client = to_i2c_client(dev); 330 struct sis5595_data *data = i2c_get_clientdata(client); 331 long val = simple_strtol(buf, NULL, 10); 332 333 mutex_lock(&data->update_lock); 334 data->temp_hyst = TEMP_TO_REG(val); 335 sis5595_write_value(client, SIS5595_REG_TEMP_HYST, data->temp_hyst); 336 mutex_unlock(&data->update_lock); 337 return count; 338 } 339 340 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); 341 static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, 342 show_temp_over, set_temp_over); 343 static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, 344 show_temp_hyst, set_temp_hyst); 345 346 /* 2 Fans */ 347 static ssize_t show_fan(struct device *dev, char *buf, int nr) 348 { 349 struct sis5595_data *data = sis5595_update_device(dev); 350 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 351 DIV_FROM_REG(data->fan_div[nr])) ); 352 } 353 354 static ssize_t show_fan_min(struct device *dev, char *buf, int nr) 355 { 356 struct sis5595_data *data = sis5595_update_device(dev); 357 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr], 358 DIV_FROM_REG(data->fan_div[nr])) ); 359 } 360 361 static ssize_t set_fan_min(struct device *dev, const char *buf, 362 size_t count, int nr) 363 { 364 struct i2c_client *client = to_i2c_client(dev); 365 struct sis5595_data *data = i2c_get_clientdata(client); 366 unsigned long val = simple_strtoul(buf, NULL, 10); 367 368 mutex_lock(&data->update_lock); 369 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 370 sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); 371 mutex_unlock(&data->update_lock); 372 return count; 373 } 374 375 static ssize_t show_fan_div(struct device *dev, char *buf, int nr) 376 { 377 struct sis5595_data *data = sis5595_update_device(dev); 378 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) ); 379 } 380 381 /* Note: we save and restore the fan minimum here, because its value is 382 determined in part by the fan divisor. This follows the principle of 383 least surprise; the user doesn't expect the fan minimum to change just 384 because the divisor changed. */ 385 static ssize_t set_fan_div(struct device *dev, const char *buf, 386 size_t count, int nr) 387 { 388 struct i2c_client *client = to_i2c_client(dev); 389 struct sis5595_data *data = i2c_get_clientdata(client); 390 unsigned long min; 391 unsigned long val = simple_strtoul(buf, NULL, 10); 392 int reg; 393 394 mutex_lock(&data->update_lock); 395 min = FAN_FROM_REG(data->fan_min[nr], 396 DIV_FROM_REG(data->fan_div[nr])); 397 reg = sis5595_read_value(client, SIS5595_REG_FANDIV); 398 399 switch (val) { 400 case 1: data->fan_div[nr] = 0; break; 401 case 2: data->fan_div[nr] = 1; break; 402 case 4: data->fan_div[nr] = 2; break; 403 case 8: data->fan_div[nr] = 3; break; 404 default: 405 dev_err(&client->dev, "fan_div value %ld not " 406 "supported. Choose one of 1, 2, 4 or 8!\n", val); 407 mutex_unlock(&data->update_lock); 408 return -EINVAL; 409 } 410 411 switch (nr) { 412 case 0: 413 reg = (reg & 0xcf) | (data->fan_div[nr] << 4); 414 break; 415 case 1: 416 reg = (reg & 0x3f) | (data->fan_div[nr] << 6); 417 break; 418 } 419 sis5595_write_value(client, SIS5595_REG_FANDIV, reg); 420 data->fan_min[nr] = 421 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); 422 sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); 423 mutex_unlock(&data->update_lock); 424 return count; 425 } 426 427 #define show_fan_offset(offset) \ 428 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 429 { \ 430 return show_fan(dev, buf, offset - 1); \ 431 } \ 432 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 433 { \ 434 return show_fan_min(dev, buf, offset - 1); \ 435 } \ 436 static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \ 437 { \ 438 return show_fan_div(dev, buf, offset - 1); \ 439 } \ 440 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ 441 const char *buf, size_t count) \ 442 { \ 443 return set_fan_min(dev, buf, count, offset - 1); \ 444 } \ 445 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\ 446 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 447 show_fan_##offset##_min, set_fan_##offset##_min); 448 449 show_fan_offset(1); 450 show_fan_offset(2); 451 452 static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf, 453 size_t count) 454 { 455 return set_fan_div(dev, buf, count, 0) ; 456 } 457 458 static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf, 459 size_t count) 460 { 461 return set_fan_div(dev, buf, count, 1) ; 462 } 463 static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, 464 show_fan_1_div, set_fan_1_div); 465 static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, 466 show_fan_2_div, set_fan_2_div); 467 468 /* Alarms */ 469 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) 470 { 471 struct sis5595_data *data = sis5595_update_device(dev); 472 return sprintf(buf, "%d\n", data->alarms); 473 } 474 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 475 476 static struct attribute *sis5595_attributes[] = { 477 &dev_attr_in0_input.attr, 478 &dev_attr_in0_min.attr, 479 &dev_attr_in0_max.attr, 480 &dev_attr_in1_input.attr, 481 &dev_attr_in1_min.attr, 482 &dev_attr_in1_max.attr, 483 &dev_attr_in2_input.attr, 484 &dev_attr_in2_min.attr, 485 &dev_attr_in2_max.attr, 486 &dev_attr_in3_input.attr, 487 &dev_attr_in3_min.attr, 488 &dev_attr_in3_max.attr, 489 490 &dev_attr_fan1_input.attr, 491 &dev_attr_fan1_min.attr, 492 &dev_attr_fan1_div.attr, 493 &dev_attr_fan2_input.attr, 494 &dev_attr_fan2_min.attr, 495 &dev_attr_fan2_div.attr, 496 497 &dev_attr_alarms.attr, 498 NULL 499 }; 500 501 static const struct attribute_group sis5595_group = { 502 .attrs = sis5595_attributes, 503 }; 504 505 static struct attribute *sis5595_attributes_opt[] = { 506 &dev_attr_in4_input.attr, 507 &dev_attr_in4_min.attr, 508 &dev_attr_in4_max.attr, 509 510 &dev_attr_temp1_input.attr, 511 &dev_attr_temp1_max.attr, 512 &dev_attr_temp1_max_hyst.attr, 513 NULL 514 }; 515 516 static const struct attribute_group sis5595_group_opt = { 517 .attrs = sis5595_attributes_opt, 518 }; 519 520 /* This is called when the module is loaded */ 521 static int sis5595_detect(struct i2c_adapter *adapter) 522 { 523 int err = 0; 524 int i; 525 struct i2c_client *new_client; 526 struct sis5595_data *data; 527 char val; 528 u16 a; 529 530 if (force_addr) 531 address = force_addr & ~(SIS5595_EXTENT - 1); 532 /* Reserve the ISA region */ 533 if (!request_region(address, SIS5595_EXTENT, 534 sis5595_driver.driver.name)) { 535 err = -EBUSY; 536 goto exit; 537 } 538 if (force_addr) { 539 dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address); 540 if (PCIBIOS_SUCCESSFUL != 541 pci_write_config_word(s_bridge, SIS5595_BASE_REG, address)) 542 goto exit_release; 543 if (PCIBIOS_SUCCESSFUL != 544 pci_read_config_word(s_bridge, SIS5595_BASE_REG, &a)) 545 goto exit_release; 546 if ((a & ~(SIS5595_EXTENT - 1)) != address) 547 /* doesn't work for some chips? */ 548 goto exit_release; 549 } 550 551 if (PCIBIOS_SUCCESSFUL != 552 pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) { 553 goto exit_release; 554 } 555 if ((val & 0x80) == 0) { 556 if (PCIBIOS_SUCCESSFUL != 557 pci_write_config_byte(s_bridge, SIS5595_ENABLE_REG, 558 val | 0x80)) 559 goto exit_release; 560 if (PCIBIOS_SUCCESSFUL != 561 pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) 562 goto exit_release; 563 if ((val & 0x80) == 0) 564 /* doesn't work for some chips! */ 565 goto exit_release; 566 } 567 568 if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) { 569 err = -ENOMEM; 570 goto exit_release; 571 } 572 573 new_client = &data->client; 574 new_client->addr = address; 575 mutex_init(&data->lock); 576 i2c_set_clientdata(new_client, data); 577 new_client->adapter = adapter; 578 new_client->driver = &sis5595_driver; 579 new_client->flags = 0; 580 581 /* Check revision and pin registers to determine whether 4 or 5 voltages */ 582 pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision)); 583 /* 4 voltages, 1 temp */ 584 data->maxins = 3; 585 if (data->revision >= REV2MIN) { 586 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); 587 if (!(val & 0x80)) 588 /* 5 voltages, no temps */ 589 data->maxins = 4; 590 } 591 592 /* Fill in the remaining client fields and put it into the global list */ 593 strlcpy(new_client->name, "sis5595", I2C_NAME_SIZE); 594 595 data->valid = 0; 596 mutex_init(&data->update_lock); 597 598 /* Tell the I2C layer a new client has arrived */ 599 if ((err = i2c_attach_client(new_client))) 600 goto exit_free; 601 602 /* Initialize the SIS5595 chip */ 603 sis5595_init_client(new_client); 604 605 /* A few vars need to be filled upon startup */ 606 for (i = 0; i < 2; i++) { 607 data->fan_min[i] = sis5595_read_value(new_client, 608 SIS5595_REG_FAN_MIN(i)); 609 } 610 611 /* Register sysfs hooks */ 612 if ((err = sysfs_create_group(&new_client->dev.kobj, &sis5595_group))) 613 goto exit_detach; 614 if (data->maxins == 4) { 615 if ((err = device_create_file(&new_client->dev, 616 &dev_attr_in4_input)) 617 || (err = device_create_file(&new_client->dev, 618 &dev_attr_in4_min)) 619 || (err = device_create_file(&new_client->dev, 620 &dev_attr_in4_max))) 621 goto exit_remove_files; 622 } else { 623 if ((err = device_create_file(&new_client->dev, 624 &dev_attr_temp1_input)) 625 || (err = device_create_file(&new_client->dev, 626 &dev_attr_temp1_max)) 627 || (err = device_create_file(&new_client->dev, 628 &dev_attr_temp1_max_hyst))) 629 goto exit_remove_files; 630 } 631 632 data->class_dev = hwmon_device_register(&new_client->dev); 633 if (IS_ERR(data->class_dev)) { 634 err = PTR_ERR(data->class_dev); 635 goto exit_remove_files; 636 } 637 638 return 0; 639 640 exit_remove_files: 641 sysfs_remove_group(&new_client->dev.kobj, &sis5595_group); 642 sysfs_remove_group(&new_client->dev.kobj, &sis5595_group_opt); 643 exit_detach: 644 i2c_detach_client(new_client); 645 exit_free: 646 kfree(data); 647 exit_release: 648 release_region(address, SIS5595_EXTENT); 649 exit: 650 return err; 651 } 652 653 static int sis5595_detach_client(struct i2c_client *client) 654 { 655 struct sis5595_data *data = i2c_get_clientdata(client); 656 int err; 657 658 hwmon_device_unregister(data->class_dev); 659 sysfs_remove_group(&client->dev.kobj, &sis5595_group); 660 sysfs_remove_group(&client->dev.kobj, &sis5595_group_opt); 661 662 if ((err = i2c_detach_client(client))) 663 return err; 664 665 release_region(client->addr, SIS5595_EXTENT); 666 667 kfree(data); 668 669 return 0; 670 } 671 672 673 /* ISA access must be locked explicitly. */ 674 static int sis5595_read_value(struct i2c_client *client, u8 reg) 675 { 676 int res; 677 678 struct sis5595_data *data = i2c_get_clientdata(client); 679 mutex_lock(&data->lock); 680 outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); 681 res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET); 682 mutex_unlock(&data->lock); 683 return res; 684 } 685 686 static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value) 687 { 688 struct sis5595_data *data = i2c_get_clientdata(client); 689 mutex_lock(&data->lock); 690 outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); 691 outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET); 692 mutex_unlock(&data->lock); 693 return 0; 694 } 695 696 /* Called when we have found a new SIS5595. */ 697 static void sis5595_init_client(struct i2c_client *client) 698 { 699 u8 config = sis5595_read_value(client, SIS5595_REG_CONFIG); 700 if (!(config & 0x01)) 701 sis5595_write_value(client, SIS5595_REG_CONFIG, 702 (config & 0xf7) | 0x01); 703 } 704 705 static struct sis5595_data *sis5595_update_device(struct device *dev) 706 { 707 struct i2c_client *client = to_i2c_client(dev); 708 struct sis5595_data *data = i2c_get_clientdata(client); 709 int i; 710 711 mutex_lock(&data->update_lock); 712 713 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 714 || !data->valid) { 715 716 for (i = 0; i <= data->maxins; i++) { 717 data->in[i] = 718 sis5595_read_value(client, SIS5595_REG_IN(i)); 719 data->in_min[i] = 720 sis5595_read_value(client, 721 SIS5595_REG_IN_MIN(i)); 722 data->in_max[i] = 723 sis5595_read_value(client, 724 SIS5595_REG_IN_MAX(i)); 725 } 726 for (i = 0; i < 2; i++) { 727 data->fan[i] = 728 sis5595_read_value(client, SIS5595_REG_FAN(i)); 729 data->fan_min[i] = 730 sis5595_read_value(client, 731 SIS5595_REG_FAN_MIN(i)); 732 } 733 if (data->maxins == 3) { 734 data->temp = 735 sis5595_read_value(client, SIS5595_REG_TEMP); 736 data->temp_over = 737 sis5595_read_value(client, SIS5595_REG_TEMP_OVER); 738 data->temp_hyst = 739 sis5595_read_value(client, SIS5595_REG_TEMP_HYST); 740 } 741 i = sis5595_read_value(client, SIS5595_REG_FANDIV); 742 data->fan_div[0] = (i >> 4) & 0x03; 743 data->fan_div[1] = i >> 6; 744 data->alarms = 745 sis5595_read_value(client, SIS5595_REG_ALARM1) | 746 (sis5595_read_value(client, SIS5595_REG_ALARM2) << 8); 747 data->last_updated = jiffies; 748 data->valid = 1; 749 } 750 751 mutex_unlock(&data->update_lock); 752 753 return data; 754 } 755 756 static struct pci_device_id sis5595_pci_ids[] = { 757 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, 758 { 0, } 759 }; 760 761 MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); 762 763 static int blacklist[] __devinitdata = { 764 PCI_DEVICE_ID_SI_540, 765 PCI_DEVICE_ID_SI_550, 766 PCI_DEVICE_ID_SI_630, 767 PCI_DEVICE_ID_SI_645, 768 PCI_DEVICE_ID_SI_730, 769 PCI_DEVICE_ID_SI_735, 770 PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but 771 that ID shows up in other chips so we 772 use the 5511 ID for recognition */ 773 PCI_DEVICE_ID_SI_5597, 774 PCI_DEVICE_ID_SI_5598, 775 0 }; 776 777 static int __devinit sis5595_pci_probe(struct pci_dev *dev, 778 const struct pci_device_id *id) 779 { 780 u16 val; 781 int *i; 782 783 for (i = blacklist; *i != 0; i++) { 784 struct pci_dev *dev; 785 dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL); 786 if (dev) { 787 dev_err(&dev->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i); 788 pci_dev_put(dev); 789 return -ENODEV; 790 } 791 } 792 793 if (PCIBIOS_SUCCESSFUL != 794 pci_read_config_word(dev, SIS5595_BASE_REG, &val)) 795 return -ENODEV; 796 797 address = val & ~(SIS5595_EXTENT - 1); 798 if (address == 0 && force_addr == 0) { 799 dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); 800 return -ENODEV; 801 } 802 803 s_bridge = pci_dev_get(dev); 804 if (i2c_isa_add_driver(&sis5595_driver)) { 805 pci_dev_put(s_bridge); 806 s_bridge = NULL; 807 } 808 809 /* Always return failure here. This is to allow other drivers to bind 810 * to this pci device. We don't really want to have control over the 811 * pci device, we only wanted to read as few register values from it. 812 */ 813 return -ENODEV; 814 } 815 816 static struct pci_driver sis5595_pci_driver = { 817 .name = "sis5595", 818 .id_table = sis5595_pci_ids, 819 .probe = sis5595_pci_probe, 820 }; 821 822 static int __init sm_sis5595_init(void) 823 { 824 return pci_register_driver(&sis5595_pci_driver); 825 } 826 827 static void __exit sm_sis5595_exit(void) 828 { 829 pci_unregister_driver(&sis5595_pci_driver); 830 if (s_bridge != NULL) { 831 i2c_isa_del_driver(&sis5595_driver); 832 pci_dev_put(s_bridge); 833 s_bridge = NULL; 834 } 835 } 836 837 MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); 838 MODULE_DESCRIPTION("SiS 5595 Sensor device"); 839 MODULE_LICENSE("GPL"); 840 841 module_init(sm_sis5595_init); 842 module_exit(sm_sis5595_exit); 843