| 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 | * Kyösti Mälkki <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 <jdelvare@suse.de> |
| 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 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 54 | |
| 55 | #include <linux/module.h> |
| 56 | #include <linux/slab.h> |
| 57 | #include <linux/ioport.h> |
| 58 | #include <linux/pci.h> |
| 59 | #include <linux/platform_device.h> |
| 60 | #include <linux/hwmon.h> |
| 61 | #include <linux/hwmon-sysfs.h> |
| 62 | #include <linux/err.h> |
| 63 | #include <linux/init.h> |
| 64 | #include <linux/jiffies.h> |
| 65 | #include <linux/mutex.h> |
| 66 | #include <linux/sysfs.h> |
| 67 | #include <linux/acpi.h> |
| 68 | #include <linux/io.h> |
| 69 | |
| 70 | |
| 71 | /* |
| 72 | * If force_addr is set to anything different from 0, we forcibly enable |
| 73 | * the device at the given address. |
| 74 | */ |
| 75 | static u16 force_addr; |
| 76 | module_param(force_addr, ushort, 0); |
| 77 | MODULE_PARM_DESC(force_addr, |
| 78 | "Initialize the base address of the sensors"); |
| 79 | |
| 80 | static struct platform_device *pdev; |
| 81 | |
| 82 | /* Many SIS5595 constants specified below */ |
| 83 | |
| 84 | /* Length of ISA address segment */ |
| 85 | #define SIS5595_EXTENT 8 |
| 86 | /* PCI Config Registers */ |
| 87 | #define SIS5595_BASE_REG 0x68 |
| 88 | #define SIS5595_PIN_REG 0x7A |
| 89 | #define SIS5595_ENABLE_REG 0x7B |
| 90 | |
| 91 | /* Where are the ISA address/data registers relative to the base address */ |
| 92 | #define SIS5595_ADDR_REG_OFFSET 5 |
| 93 | #define SIS5595_DATA_REG_OFFSET 6 |
| 94 | |
| 95 | /* The SIS5595 registers */ |
| 96 | #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) |
| 97 | #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) |
| 98 | #define SIS5595_REG_IN(nr) (0x20 + (nr)) |
| 99 | |
| 100 | #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) |
| 101 | #define SIS5595_REG_FAN(nr) (0x28 + (nr)) |
| 102 | |
| 103 | /* |
| 104 | * On the first version of the chip, the temp registers are separate. |
| 105 | * On the second version, |
| 106 | * TEMP pin is shared with IN4, configured in PCI register 0x7A. |
| 107 | * The registers are the same as well. |
| 108 | * OVER and HYST are really MAX and MIN. |
| 109 | */ |
| 110 | |
| 111 | #define REV2MIN 0xb0 |
| 112 | #define SIS5595_REG_TEMP (((data->revision) >= REV2MIN) ? \ |
| 113 | SIS5595_REG_IN(4) : 0x27) |
| 114 | #define SIS5595_REG_TEMP_OVER (((data->revision) >= REV2MIN) ? \ |
| 115 | SIS5595_REG_IN_MAX(4) : 0x39) |
| 116 | #define SIS5595_REG_TEMP_HYST (((data->revision) >= REV2MIN) ? \ |
| 117 | SIS5595_REG_IN_MIN(4) : 0x3a) |
| 118 | |
| 119 | #define SIS5595_REG_CONFIG 0x40 |
| 120 | #define SIS5595_REG_ALARM1 0x41 |
| 121 | #define SIS5595_REG_ALARM2 0x42 |
| 122 | #define SIS5595_REG_FANDIV 0x47 |
| 123 | |
| 124 | /* |
| 125 | * Conversions. Limit checking is only done on the TO_REG |
| 126 | * variants. |
| 127 | */ |
| 128 | |
| 129 | /* |
| 130 | * IN: mV, (0V to 4.08V) |
| 131 | * REG: 16mV/bit |
| 132 | */ |
| 133 | static inline u8 IN_TO_REG(unsigned long val) |
| 134 | { |
| 135 | unsigned long nval = clamp_val(val, 0, 4080); |
| 136 | return (nval + 8) / 16; |
| 137 | } |
| 138 | #define IN_FROM_REG(val) ((val) * 16) |
| 139 | |
| 140 | static inline u8 FAN_TO_REG(long rpm, int div) |
| 141 | { |
| 142 | if (rpm <= 0) |
| 143 | return 255; |
| 144 | if (rpm > 1350000) |
| 145 | return 1; |
| 146 | return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); |
| 147 | } |
| 148 | |
| 149 | static inline int FAN_FROM_REG(u8 val, int div) |
| 150 | { |
| 151 | return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div); |
| 152 | } |
| 153 | |
| 154 | /* |
| 155 | * TEMP: mC (-54.12C to +157.53C) |
| 156 | * REG: 0.83C/bit + 52.12, two's complement |
| 157 | */ |
| 158 | static inline int TEMP_FROM_REG(s8 val) |
| 159 | { |
| 160 | return val * 830 + 52120; |
| 161 | } |
| 162 | static inline s8 TEMP_TO_REG(long val) |
| 163 | { |
| 164 | int nval = clamp_val(val, -54120, 157530) ; |
| 165 | return nval < 0 ? (nval - 5212 - 415) / 830 : (nval - 5212 + 415) / 830; |
| 166 | } |
| 167 | |
| 168 | /* |
| 169 | * FAN DIV: 1, 2, 4, or 8 (defaults to 2) |
| 170 | * REG: 0, 1, 2, or 3 (respectively) (defaults to 1) |
| 171 | */ |
| 172 | static inline u8 DIV_TO_REG(int val) |
| 173 | { |
| 174 | return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1; |
| 175 | } |
| 176 | #define DIV_FROM_REG(val) (1 << (val)) |
| 177 | |
| 178 | /* |
| 179 | * For each registered chip, we need to keep some data in memory. |
| 180 | * The structure is dynamically allocated. |
| 181 | */ |
| 182 | struct sis5595_data { |
| 183 | unsigned short addr; |
| 184 | const char *name; |
| 185 | struct device *hwmon_dev; |
| 186 | struct mutex lock; |
| 187 | |
| 188 | struct mutex update_lock; |
| 189 | char valid; /* !=0 if following fields are valid */ |
| 190 | unsigned long last_updated; /* In jiffies */ |
| 191 | char maxins; /* == 3 if temp enabled, otherwise == 4 */ |
| 192 | u8 revision; /* Reg. value */ |
| 193 | |
| 194 | u8 in[5]; /* Register value */ |
| 195 | u8 in_max[5]; /* Register value */ |
| 196 | u8 in_min[5]; /* Register value */ |
| 197 | u8 fan[2]; /* Register value */ |
| 198 | u8 fan_min[2]; /* Register value */ |
| 199 | s8 temp; /* Register value */ |
| 200 | s8 temp_over; /* Register value */ |
| 201 | s8 temp_hyst; /* Register value */ |
| 202 | u8 fan_div[2]; /* Register encoding, shifted right */ |
| 203 | u16 alarms; /* Register encoding, combined */ |
| 204 | }; |
| 205 | |
| 206 | static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ |
| 207 | |
| 208 | static int sis5595_probe(struct platform_device *pdev); |
| 209 | static int sis5595_remove(struct platform_device *pdev); |
| 210 | |
| 211 | static int sis5595_read_value(struct sis5595_data *data, u8 reg); |
| 212 | static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value); |
| 213 | static struct sis5595_data *sis5595_update_device(struct device *dev); |
| 214 | static void sis5595_init_device(struct sis5595_data *data); |
| 215 | |
| 216 | static struct platform_driver sis5595_driver = { |
| 217 | .driver = { |
| 218 | .owner = THIS_MODULE, |
| 219 | .name = "sis5595", |
| 220 | }, |
| 221 | .probe = sis5595_probe, |
| 222 | .remove = sis5595_remove, |
| 223 | }; |
| 224 | |
| 225 | /* 4 Voltages */ |
| 226 | static ssize_t show_in(struct device *dev, struct device_attribute *da, |
| 227 | char *buf) |
| 228 | { |
| 229 | struct sis5595_data *data = sis5595_update_device(dev); |
| 230 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 231 | int nr = attr->index; |
| 232 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); |
| 233 | } |
| 234 | |
| 235 | static ssize_t show_in_min(struct device *dev, struct device_attribute *da, |
| 236 | char *buf) |
| 237 | { |
| 238 | struct sis5595_data *data = sis5595_update_device(dev); |
| 239 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 240 | int nr = attr->index; |
| 241 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); |
| 242 | } |
| 243 | |
| 244 | static ssize_t show_in_max(struct device *dev, struct device_attribute *da, |
| 245 | char *buf) |
| 246 | { |
| 247 | struct sis5595_data *data = sis5595_update_device(dev); |
| 248 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 249 | int nr = attr->index; |
| 250 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); |
| 251 | } |
| 252 | |
| 253 | static ssize_t set_in_min(struct device *dev, struct device_attribute *da, |
| 254 | const char *buf, size_t count) |
| 255 | { |
| 256 | struct sis5595_data *data = dev_get_drvdata(dev); |
| 257 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 258 | int nr = attr->index; |
| 259 | unsigned long val; |
| 260 | int err; |
| 261 | |
| 262 | err = kstrtoul(buf, 10, &val); |
| 263 | if (err) |
| 264 | return err; |
| 265 | |
| 266 | mutex_lock(&data->update_lock); |
| 267 | data->in_min[nr] = IN_TO_REG(val); |
| 268 | sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); |
| 269 | mutex_unlock(&data->update_lock); |
| 270 | return count; |
| 271 | } |
| 272 | |
| 273 | static ssize_t set_in_max(struct device *dev, struct device_attribute *da, |
| 274 | const char *buf, size_t count) |
| 275 | { |
| 276 | struct sis5595_data *data = dev_get_drvdata(dev); |
| 277 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 278 | int nr = attr->index; |
| 279 | unsigned long val; |
| 280 | int err; |
| 281 | |
| 282 | err = kstrtoul(buf, 10, &val); |
| 283 | if (err) |
| 284 | return err; |
| 285 | |
| 286 | mutex_lock(&data->update_lock); |
| 287 | data->in_max[nr] = IN_TO_REG(val); |
| 288 | sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); |
| 289 | mutex_unlock(&data->update_lock); |
| 290 | return count; |
| 291 | } |
| 292 | |
| 293 | #define show_in_offset(offset) \ |
| 294 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
| 295 | show_in, NULL, offset); \ |
| 296 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
| 297 | show_in_min, set_in_min, offset); \ |
| 298 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
| 299 | show_in_max, set_in_max, offset); |
| 300 | |
| 301 | show_in_offset(0); |
| 302 | show_in_offset(1); |
| 303 | show_in_offset(2); |
| 304 | show_in_offset(3); |
| 305 | show_in_offset(4); |
| 306 | |
| 307 | /* Temperature */ |
| 308 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
| 309 | char *buf) |
| 310 | { |
| 311 | struct sis5595_data *data = sis5595_update_device(dev); |
| 312 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); |
| 313 | } |
| 314 | |
| 315 | static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, |
| 316 | char *buf) |
| 317 | { |
| 318 | struct sis5595_data *data = sis5595_update_device(dev); |
| 319 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); |
| 320 | } |
| 321 | |
| 322 | static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, |
| 323 | const char *buf, size_t count) |
| 324 | { |
| 325 | struct sis5595_data *data = dev_get_drvdata(dev); |
| 326 | long val; |
| 327 | int err; |
| 328 | |
| 329 | err = kstrtol(buf, 10, &val); |
| 330 | if (err) |
| 331 | return err; |
| 332 | |
| 333 | mutex_lock(&data->update_lock); |
| 334 | data->temp_over = TEMP_TO_REG(val); |
| 335 | sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over); |
| 336 | mutex_unlock(&data->update_lock); |
| 337 | return count; |
| 338 | } |
| 339 | |
| 340 | static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, |
| 341 | char *buf) |
| 342 | { |
| 343 | struct sis5595_data *data = sis5595_update_device(dev); |
| 344 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); |
| 345 | } |
| 346 | |
| 347 | static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, |
| 348 | const char *buf, size_t count) |
| 349 | { |
| 350 | struct sis5595_data *data = dev_get_drvdata(dev); |
| 351 | long val; |
| 352 | int err; |
| 353 | |
| 354 | err = kstrtol(buf, 10, &val); |
| 355 | if (err) |
| 356 | return err; |
| 357 | |
| 358 | mutex_lock(&data->update_lock); |
| 359 | data->temp_hyst = TEMP_TO_REG(val); |
| 360 | sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst); |
| 361 | mutex_unlock(&data->update_lock); |
| 362 | return count; |
| 363 | } |
| 364 | |
| 365 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); |
| 366 | static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, |
| 367 | show_temp_over, set_temp_over); |
| 368 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, |
| 369 | show_temp_hyst, set_temp_hyst); |
| 370 | |
| 371 | /* 2 Fans */ |
| 372 | static ssize_t show_fan(struct device *dev, struct device_attribute *da, |
| 373 | char *buf) |
| 374 | { |
| 375 | struct sis5595_data *data = sis5595_update_device(dev); |
| 376 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 377 | int nr = attr->index; |
| 378 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], |
| 379 | DIV_FROM_REG(data->fan_div[nr]))); |
| 380 | } |
| 381 | |
| 382 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *da, |
| 383 | char *buf) |
| 384 | { |
| 385 | struct sis5595_data *data = sis5595_update_device(dev); |
| 386 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 387 | int nr = attr->index; |
| 388 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], |
| 389 | DIV_FROM_REG(data->fan_div[nr]))); |
| 390 | } |
| 391 | |
| 392 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *da, |
| 393 | const char *buf, size_t count) |
| 394 | { |
| 395 | struct sis5595_data *data = dev_get_drvdata(dev); |
| 396 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 397 | int nr = attr->index; |
| 398 | unsigned long val; |
| 399 | int err; |
| 400 | |
| 401 | err = kstrtoul(buf, 10, &val); |
| 402 | if (err) |
| 403 | return err; |
| 404 | |
| 405 | mutex_lock(&data->update_lock); |
| 406 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
| 407 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
| 408 | mutex_unlock(&data->update_lock); |
| 409 | return count; |
| 410 | } |
| 411 | |
| 412 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *da, |
| 413 | char *buf) |
| 414 | { |
| 415 | struct sis5595_data *data = sis5595_update_device(dev); |
| 416 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 417 | int nr = attr->index; |
| 418 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); |
| 419 | } |
| 420 | |
| 421 | /* |
| 422 | * Note: we save and restore the fan minimum here, because its value is |
| 423 | * determined in part by the fan divisor. This follows the principle of |
| 424 | * least surprise; the user doesn't expect the fan minimum to change just |
| 425 | * because the divisor changed. |
| 426 | */ |
| 427 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, |
| 428 | const char *buf, size_t count) |
| 429 | { |
| 430 | struct sis5595_data *data = dev_get_drvdata(dev); |
| 431 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
| 432 | int nr = attr->index; |
| 433 | unsigned long min; |
| 434 | int reg; |
| 435 | unsigned long val; |
| 436 | int err; |
| 437 | |
| 438 | err = kstrtoul(buf, 10, &val); |
| 439 | if (err) |
| 440 | return err; |
| 441 | |
| 442 | mutex_lock(&data->update_lock); |
| 443 | min = FAN_FROM_REG(data->fan_min[nr], |
| 444 | DIV_FROM_REG(data->fan_div[nr])); |
| 445 | reg = sis5595_read_value(data, SIS5595_REG_FANDIV); |
| 446 | |
| 447 | switch (val) { |
| 448 | case 1: |
| 449 | data->fan_div[nr] = 0; |
| 450 | break; |
| 451 | case 2: |
| 452 | data->fan_div[nr] = 1; |
| 453 | break; |
| 454 | case 4: |
| 455 | data->fan_div[nr] = 2; |
| 456 | break; |
| 457 | case 8: |
| 458 | data->fan_div[nr] = 3; |
| 459 | break; |
| 460 | default: |
| 461 | dev_err(dev, |
| 462 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", |
| 463 | val); |
| 464 | mutex_unlock(&data->update_lock); |
| 465 | return -EINVAL; |
| 466 | } |
| 467 | |
| 468 | switch (nr) { |
| 469 | case 0: |
| 470 | reg = (reg & 0xcf) | (data->fan_div[nr] << 4); |
| 471 | break; |
| 472 | case 1: |
| 473 | reg = (reg & 0x3f) | (data->fan_div[nr] << 6); |
| 474 | break; |
| 475 | } |
| 476 | sis5595_write_value(data, SIS5595_REG_FANDIV, reg); |
| 477 | data->fan_min[nr] = |
| 478 | FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
| 479 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
| 480 | mutex_unlock(&data->update_lock); |
| 481 | return count; |
| 482 | } |
| 483 | |
| 484 | #define show_fan_offset(offset) \ |
| 485 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
| 486 | show_fan, NULL, offset - 1); \ |
| 487 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ |
| 488 | show_fan_min, set_fan_min, offset - 1); \ |
| 489 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ |
| 490 | show_fan_div, set_fan_div, offset - 1); |
| 491 | |
| 492 | show_fan_offset(1); |
| 493 | show_fan_offset(2); |
| 494 | |
| 495 | /* Alarms */ |
| 496 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
| 497 | char *buf) |
| 498 | { |
| 499 | struct sis5595_data *data = sis5595_update_device(dev); |
| 500 | return sprintf(buf, "%d\n", data->alarms); |
| 501 | } |
| 502 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
| 503 | |
| 504 | static ssize_t show_alarm(struct device *dev, struct device_attribute *da, |
| 505 | char *buf) |
| 506 | { |
| 507 | struct sis5595_data *data = sis5595_update_device(dev); |
| 508 | int nr = to_sensor_dev_attr(da)->index; |
| 509 | return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); |
| 510 | } |
| 511 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); |
| 512 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); |
| 513 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); |
| 514 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); |
| 515 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 15); |
| 516 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); |
| 517 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); |
| 518 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 15); |
| 519 | |
| 520 | static ssize_t show_name(struct device *dev, struct device_attribute *attr, |
| 521 | char *buf) |
| 522 | { |
| 523 | struct sis5595_data *data = dev_get_drvdata(dev); |
| 524 | return sprintf(buf, "%s\n", data->name); |
| 525 | } |
| 526 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
| 527 | |
| 528 | static struct attribute *sis5595_attributes[] = { |
| 529 | &sensor_dev_attr_in0_input.dev_attr.attr, |
| 530 | &sensor_dev_attr_in0_min.dev_attr.attr, |
| 531 | &sensor_dev_attr_in0_max.dev_attr.attr, |
| 532 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
| 533 | &sensor_dev_attr_in1_input.dev_attr.attr, |
| 534 | &sensor_dev_attr_in1_min.dev_attr.attr, |
| 535 | &sensor_dev_attr_in1_max.dev_attr.attr, |
| 536 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
| 537 | &sensor_dev_attr_in2_input.dev_attr.attr, |
| 538 | &sensor_dev_attr_in2_min.dev_attr.attr, |
| 539 | &sensor_dev_attr_in2_max.dev_attr.attr, |
| 540 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
| 541 | &sensor_dev_attr_in3_input.dev_attr.attr, |
| 542 | &sensor_dev_attr_in3_min.dev_attr.attr, |
| 543 | &sensor_dev_attr_in3_max.dev_attr.attr, |
| 544 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
| 545 | |
| 546 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
| 547 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
| 548 | &sensor_dev_attr_fan1_div.dev_attr.attr, |
| 549 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
| 550 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
| 551 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
| 552 | &sensor_dev_attr_fan2_div.dev_attr.attr, |
| 553 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
| 554 | |
| 555 | &dev_attr_alarms.attr, |
| 556 | &dev_attr_name.attr, |
| 557 | NULL |
| 558 | }; |
| 559 | |
| 560 | static const struct attribute_group sis5595_group = { |
| 561 | .attrs = sis5595_attributes, |
| 562 | }; |
| 563 | |
| 564 | static struct attribute *sis5595_attributes_in4[] = { |
| 565 | &sensor_dev_attr_in4_input.dev_attr.attr, |
| 566 | &sensor_dev_attr_in4_min.dev_attr.attr, |
| 567 | &sensor_dev_attr_in4_max.dev_attr.attr, |
| 568 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
| 569 | NULL |
| 570 | }; |
| 571 | |
| 572 | static const struct attribute_group sis5595_group_in4 = { |
| 573 | .attrs = sis5595_attributes_in4, |
| 574 | }; |
| 575 | |
| 576 | static struct attribute *sis5595_attributes_temp1[] = { |
| 577 | &dev_attr_temp1_input.attr, |
| 578 | &dev_attr_temp1_max.attr, |
| 579 | &dev_attr_temp1_max_hyst.attr, |
| 580 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
| 581 | NULL |
| 582 | }; |
| 583 | |
| 584 | static const struct attribute_group sis5595_group_temp1 = { |
| 585 | .attrs = sis5595_attributes_temp1, |
| 586 | }; |
| 587 | |
| 588 | /* This is called when the module is loaded */ |
| 589 | static int sis5595_probe(struct platform_device *pdev) |
| 590 | { |
| 591 | int err = 0; |
| 592 | int i; |
| 593 | struct sis5595_data *data; |
| 594 | struct resource *res; |
| 595 | char val; |
| 596 | |
| 597 | /* Reserve the ISA region */ |
| 598 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
| 599 | if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT, |
| 600 | sis5595_driver.driver.name)) |
| 601 | return -EBUSY; |
| 602 | |
| 603 | data = devm_kzalloc(&pdev->dev, sizeof(struct sis5595_data), |
| 604 | GFP_KERNEL); |
| 605 | if (!data) |
| 606 | return -ENOMEM; |
| 607 | |
| 608 | mutex_init(&data->lock); |
| 609 | mutex_init(&data->update_lock); |
| 610 | data->addr = res->start; |
| 611 | data->name = "sis5595"; |
| 612 | platform_set_drvdata(pdev, data); |
| 613 | |
| 614 | /* |
| 615 | * Check revision and pin registers to determine whether 4 or 5 voltages |
| 616 | */ |
| 617 | data->revision = s_bridge->revision; |
| 618 | /* 4 voltages, 1 temp */ |
| 619 | data->maxins = 3; |
| 620 | if (data->revision >= REV2MIN) { |
| 621 | pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); |
| 622 | if (!(val & 0x80)) |
| 623 | /* 5 voltages, no temps */ |
| 624 | data->maxins = 4; |
| 625 | } |
| 626 | |
| 627 | /* Initialize the SIS5595 chip */ |
| 628 | sis5595_init_device(data); |
| 629 | |
| 630 | /* A few vars need to be filled upon startup */ |
| 631 | for (i = 0; i < 2; i++) { |
| 632 | data->fan_min[i] = sis5595_read_value(data, |
| 633 | SIS5595_REG_FAN_MIN(i)); |
| 634 | } |
| 635 | |
| 636 | /* Register sysfs hooks */ |
| 637 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group); |
| 638 | if (err) |
| 639 | return err; |
| 640 | if (data->maxins == 4) { |
| 641 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_in4); |
| 642 | if (err) |
| 643 | goto exit_remove_files; |
| 644 | } else { |
| 645 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_temp1); |
| 646 | if (err) |
| 647 | goto exit_remove_files; |
| 648 | } |
| 649 | |
| 650 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
| 651 | if (IS_ERR(data->hwmon_dev)) { |
| 652 | err = PTR_ERR(data->hwmon_dev); |
| 653 | goto exit_remove_files; |
| 654 | } |
| 655 | |
| 656 | return 0; |
| 657 | |
| 658 | exit_remove_files: |
| 659 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); |
| 660 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4); |
| 661 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1); |
| 662 | return err; |
| 663 | } |
| 664 | |
| 665 | static int sis5595_remove(struct platform_device *pdev) |
| 666 | { |
| 667 | struct sis5595_data *data = platform_get_drvdata(pdev); |
| 668 | |
| 669 | hwmon_device_unregister(data->hwmon_dev); |
| 670 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); |
| 671 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4); |
| 672 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1); |
| 673 | |
| 674 | return 0; |
| 675 | } |
| 676 | |
| 677 | |
| 678 | /* ISA access must be locked explicitly. */ |
| 679 | static int sis5595_read_value(struct sis5595_data *data, u8 reg) |
| 680 | { |
| 681 | int res; |
| 682 | |
| 683 | mutex_lock(&data->lock); |
| 684 | outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); |
| 685 | res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET); |
| 686 | mutex_unlock(&data->lock); |
| 687 | return res; |
| 688 | } |
| 689 | |
| 690 | static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value) |
| 691 | { |
| 692 | mutex_lock(&data->lock); |
| 693 | outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); |
| 694 | outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET); |
| 695 | mutex_unlock(&data->lock); |
| 696 | } |
| 697 | |
| 698 | /* Called when we have found a new SIS5595. */ |
| 699 | static void sis5595_init_device(struct sis5595_data *data) |
| 700 | { |
| 701 | u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG); |
| 702 | if (!(config & 0x01)) |
| 703 | sis5595_write_value(data, SIS5595_REG_CONFIG, |
| 704 | (config & 0xf7) | 0x01); |
| 705 | } |
| 706 | |
| 707 | static struct sis5595_data *sis5595_update_device(struct device *dev) |
| 708 | { |
| 709 | struct sis5595_data *data = dev_get_drvdata(dev); |
| 710 | int i; |
| 711 | |
| 712 | mutex_lock(&data->update_lock); |
| 713 | |
| 714 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
| 715 | || !data->valid) { |
| 716 | |
| 717 | for (i = 0; i <= data->maxins; i++) { |
| 718 | data->in[i] = |
| 719 | sis5595_read_value(data, SIS5595_REG_IN(i)); |
| 720 | data->in_min[i] = |
| 721 | sis5595_read_value(data, |
| 722 | SIS5595_REG_IN_MIN(i)); |
| 723 | data->in_max[i] = |
| 724 | sis5595_read_value(data, |
| 725 | SIS5595_REG_IN_MAX(i)); |
| 726 | } |
| 727 | for (i = 0; i < 2; i++) { |
| 728 | data->fan[i] = |
| 729 | sis5595_read_value(data, SIS5595_REG_FAN(i)); |
| 730 | data->fan_min[i] = |
| 731 | sis5595_read_value(data, |
| 732 | SIS5595_REG_FAN_MIN(i)); |
| 733 | } |
| 734 | if (data->maxins == 3) { |
| 735 | data->temp = |
| 736 | sis5595_read_value(data, SIS5595_REG_TEMP); |
| 737 | data->temp_over = |
| 738 | sis5595_read_value(data, SIS5595_REG_TEMP_OVER); |
| 739 | data->temp_hyst = |
| 740 | sis5595_read_value(data, SIS5595_REG_TEMP_HYST); |
| 741 | } |
| 742 | i = sis5595_read_value(data, SIS5595_REG_FANDIV); |
| 743 | data->fan_div[0] = (i >> 4) & 0x03; |
| 744 | data->fan_div[1] = i >> 6; |
| 745 | data->alarms = |
| 746 | sis5595_read_value(data, SIS5595_REG_ALARM1) | |
| 747 | (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8); |
| 748 | data->last_updated = jiffies; |
| 749 | data->valid = 1; |
| 750 | } |
| 751 | |
| 752 | mutex_unlock(&data->update_lock); |
| 753 | |
| 754 | return data; |
| 755 | } |
| 756 | |
| 757 | static const struct pci_device_id sis5595_pci_ids[] = { |
| 758 | { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, |
| 759 | { 0, } |
| 760 | }; |
| 761 | |
| 762 | MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); |
| 763 | |
| 764 | static int blacklist[] = { |
| 765 | PCI_DEVICE_ID_SI_540, |
| 766 | PCI_DEVICE_ID_SI_550, |
| 767 | PCI_DEVICE_ID_SI_630, |
| 768 | PCI_DEVICE_ID_SI_645, |
| 769 | PCI_DEVICE_ID_SI_730, |
| 770 | PCI_DEVICE_ID_SI_735, |
| 771 | PCI_DEVICE_ID_SI_5511, /* |
| 772 | * 5513 chip has the 0008 device but |
| 773 | * that ID shows up in other chips so we |
| 774 | * use the 5511 ID for recognition |
| 775 | */ |
| 776 | PCI_DEVICE_ID_SI_5597, |
| 777 | PCI_DEVICE_ID_SI_5598, |
| 778 | 0 }; |
| 779 | |
| 780 | static int sis5595_device_add(unsigned short address) |
| 781 | { |
| 782 | struct resource res = { |
| 783 | .start = address, |
| 784 | .end = address + SIS5595_EXTENT - 1, |
| 785 | .name = "sis5595", |
| 786 | .flags = IORESOURCE_IO, |
| 787 | }; |
| 788 | int err; |
| 789 | |
| 790 | err = acpi_check_resource_conflict(&res); |
| 791 | if (err) |
| 792 | goto exit; |
| 793 | |
| 794 | pdev = platform_device_alloc("sis5595", address); |
| 795 | if (!pdev) { |
| 796 | err = -ENOMEM; |
| 797 | pr_err("Device allocation failed\n"); |
| 798 | goto exit; |
| 799 | } |
| 800 | |
| 801 | err = platform_device_add_resources(pdev, &res, 1); |
| 802 | if (err) { |
| 803 | pr_err("Device resource addition failed (%d)\n", err); |
| 804 | goto exit_device_put; |
| 805 | } |
| 806 | |
| 807 | err = platform_device_add(pdev); |
| 808 | if (err) { |
| 809 | pr_err("Device addition failed (%d)\n", err); |
| 810 | goto exit_device_put; |
| 811 | } |
| 812 | |
| 813 | return 0; |
| 814 | |
| 815 | exit_device_put: |
| 816 | platform_device_put(pdev); |
| 817 | exit: |
| 818 | return err; |
| 819 | } |
| 820 | |
| 821 | static int sis5595_pci_probe(struct pci_dev *dev, |
| 822 | const struct pci_device_id *id) |
| 823 | { |
| 824 | u16 address; |
| 825 | u8 enable; |
| 826 | int *i; |
| 827 | |
| 828 | for (i = blacklist; *i != 0; i++) { |
| 829 | struct pci_dev *d; |
| 830 | d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL); |
| 831 | if (d) { |
| 832 | dev_err(&d->dev, |
| 833 | "Looked for SIS5595 but found unsupported device %.4x\n", |
| 834 | *i); |
| 835 | pci_dev_put(d); |
| 836 | return -ENODEV; |
| 837 | } |
| 838 | } |
| 839 | |
| 840 | force_addr &= ~(SIS5595_EXTENT - 1); |
| 841 | if (force_addr) { |
| 842 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr); |
| 843 | pci_write_config_word(dev, SIS5595_BASE_REG, force_addr); |
| 844 | } |
| 845 | |
| 846 | if (PCIBIOS_SUCCESSFUL != |
| 847 | pci_read_config_word(dev, SIS5595_BASE_REG, &address)) { |
| 848 | dev_err(&dev->dev, "Failed to read ISA address\n"); |
| 849 | return -ENODEV; |
| 850 | } |
| 851 | |
| 852 | address &= ~(SIS5595_EXTENT - 1); |
| 853 | if (!address) { |
| 854 | dev_err(&dev->dev, |
| 855 | "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); |
| 856 | return -ENODEV; |
| 857 | } |
| 858 | if (force_addr && address != force_addr) { |
| 859 | /* doesn't work for some chips? */ |
| 860 | dev_err(&dev->dev, "Failed to force ISA address\n"); |
| 861 | return -ENODEV; |
| 862 | } |
| 863 | |
| 864 | if (PCIBIOS_SUCCESSFUL != |
| 865 | pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) { |
| 866 | dev_err(&dev->dev, "Failed to read enable register\n"); |
| 867 | return -ENODEV; |
| 868 | } |
| 869 | if (!(enable & 0x80)) { |
| 870 | if ((PCIBIOS_SUCCESSFUL != |
| 871 | pci_write_config_byte(dev, SIS5595_ENABLE_REG, |
| 872 | enable | 0x80)) |
| 873 | || (PCIBIOS_SUCCESSFUL != |
| 874 | pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) |
| 875 | || (!(enable & 0x80))) { |
| 876 | /* doesn't work for some chips! */ |
| 877 | dev_err(&dev->dev, "Failed to enable HWM device\n"); |
| 878 | return -ENODEV; |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | if (platform_driver_register(&sis5595_driver)) { |
| 883 | dev_dbg(&dev->dev, "Failed to register sis5595 driver\n"); |
| 884 | goto exit; |
| 885 | } |
| 886 | |
| 887 | s_bridge = pci_dev_get(dev); |
| 888 | /* Sets global pdev as a side effect */ |
| 889 | if (sis5595_device_add(address)) |
| 890 | goto exit_unregister; |
| 891 | |
| 892 | /* |
| 893 | * Always return failure here. This is to allow other drivers to bind |
| 894 | * to this pci device. We don't really want to have control over the |
| 895 | * pci device, we only wanted to read as few register values from it. |
| 896 | */ |
| 897 | return -ENODEV; |
| 898 | |
| 899 | exit_unregister: |
| 900 | pci_dev_put(dev); |
| 901 | platform_driver_unregister(&sis5595_driver); |
| 902 | exit: |
| 903 | return -ENODEV; |
| 904 | } |
| 905 | |
| 906 | static struct pci_driver sis5595_pci_driver = { |
| 907 | .name = "sis5595", |
| 908 | .id_table = sis5595_pci_ids, |
| 909 | .probe = sis5595_pci_probe, |
| 910 | }; |
| 911 | |
| 912 | static int __init sm_sis5595_init(void) |
| 913 | { |
| 914 | return pci_register_driver(&sis5595_pci_driver); |
| 915 | } |
| 916 | |
| 917 | static void __exit sm_sis5595_exit(void) |
| 918 | { |
| 919 | pci_unregister_driver(&sis5595_pci_driver); |
| 920 | if (s_bridge != NULL) { |
| 921 | platform_device_unregister(pdev); |
| 922 | platform_driver_unregister(&sis5595_driver); |
| 923 | pci_dev_put(s_bridge); |
| 924 | s_bridge = NULL; |
| 925 | } |
| 926 | } |
| 927 | |
| 928 | MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); |
| 929 | MODULE_DESCRIPTION("SiS 5595 Sensor device"); |
| 930 | MODULE_LICENSE("GPL"); |
| 931 | |
| 932 | module_init(sm_sis5595_init); |
| 933 | module_exit(sm_sis5595_exit); |