| 1 | /* $NetBSD: nouveau_hwmon.c,v 1.1.1.2 2014/08/06 12:36:23 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2010 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_hwmon.c,v 1.1.1.2 2014/08/06 12:36:23 riastradh Exp $" ); |
| 29 | |
| 30 | #ifdef CONFIG_ACPI |
| 31 | #include <linux/acpi.h> |
| 32 | #endif |
| 33 | #include <linux/power_supply.h> |
| 34 | #include <linux/hwmon.h> |
| 35 | #include <linux/hwmon-sysfs.h> |
| 36 | |
| 37 | #include <drm/drmP.h> |
| 38 | |
| 39 | #include "nouveau_drm.h" |
| 40 | #include "nouveau_hwmon.h" |
| 41 | |
| 42 | #include <subdev/gpio.h> |
| 43 | #include <subdev/timer.h> |
| 44 | #include <subdev/therm.h> |
| 45 | |
| 46 | #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE)) |
| 47 | static ssize_t |
| 48 | nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf) |
| 49 | { |
| 50 | struct drm_device *dev = dev_get_drvdata(d); |
| 51 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 52 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 53 | int temp = therm->temp_get(therm); |
| 54 | |
| 55 | if (temp < 0) |
| 56 | return temp; |
| 57 | |
| 58 | return snprintf(buf, PAGE_SIZE, "%d\n" , temp * 1000); |
| 59 | } |
| 60 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp, |
| 61 | NULL, 0); |
| 62 | |
| 63 | static ssize_t |
| 64 | nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d, |
| 65 | struct device_attribute *a, char *buf) |
| 66 | { |
| 67 | return snprintf(buf, PAGE_SIZE, "%d\n" , 100); |
| 68 | } |
| 69 | static SENSOR_DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO, |
| 70 | nouveau_hwmon_show_temp1_auto_point1_pwm, NULL, 0); |
| 71 | |
| 72 | static ssize_t |
| 73 | nouveau_hwmon_temp1_auto_point1_temp(struct device *d, |
| 74 | struct device_attribute *a, char *buf) |
| 75 | { |
| 76 | struct drm_device *dev = dev_get_drvdata(d); |
| 77 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 78 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 79 | |
| 80 | return snprintf(buf, PAGE_SIZE, "%d\n" , |
| 81 | therm->attr_get(therm, NOUVEAU_THERM_ATTR_THRS_FAN_BOOST) * 1000); |
| 82 | } |
| 83 | static ssize_t |
| 84 | nouveau_hwmon_set_temp1_auto_point1_temp(struct device *d, |
| 85 | struct device_attribute *a, |
| 86 | const char *buf, size_t count) |
| 87 | { |
| 88 | struct drm_device *dev = dev_get_drvdata(d); |
| 89 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 90 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 91 | long value; |
| 92 | |
| 93 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 94 | return count; |
| 95 | |
| 96 | therm->attr_set(therm, NOUVEAU_THERM_ATTR_THRS_FAN_BOOST, |
| 97 | value / 1000); |
| 98 | |
| 99 | return count; |
| 100 | } |
| 101 | static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, S_IRUGO | S_IWUSR, |
| 102 | nouveau_hwmon_temp1_auto_point1_temp, |
| 103 | nouveau_hwmon_set_temp1_auto_point1_temp, 0); |
| 104 | |
| 105 | static ssize_t |
| 106 | nouveau_hwmon_temp1_auto_point1_temp_hyst(struct device *d, |
| 107 | struct device_attribute *a, char *buf) |
| 108 | { |
| 109 | struct drm_device *dev = dev_get_drvdata(d); |
| 110 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 111 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 112 | |
| 113 | return snprintf(buf, PAGE_SIZE, "%d\n" , |
| 114 | therm->attr_get(therm, NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000); |
| 115 | } |
| 116 | static ssize_t |
| 117 | nouveau_hwmon_set_temp1_auto_point1_temp_hyst(struct device *d, |
| 118 | struct device_attribute *a, |
| 119 | const char *buf, size_t count) |
| 120 | { |
| 121 | struct drm_device *dev = dev_get_drvdata(d); |
| 122 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 123 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 124 | long value; |
| 125 | |
| 126 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 127 | return count; |
| 128 | |
| 129 | therm->attr_set(therm, NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST, |
| 130 | value / 1000); |
| 131 | |
| 132 | return count; |
| 133 | } |
| 134 | static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, |
| 135 | nouveau_hwmon_temp1_auto_point1_temp_hyst, |
| 136 | nouveau_hwmon_set_temp1_auto_point1_temp_hyst, 0); |
| 137 | |
| 138 | static ssize_t |
| 139 | nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf) |
| 140 | { |
| 141 | struct drm_device *dev = dev_get_drvdata(d); |
| 142 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 143 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 144 | |
| 145 | return snprintf(buf, PAGE_SIZE, "%d\n" , |
| 146 | therm->attr_get(therm, NOUVEAU_THERM_ATTR_THRS_DOWN_CLK) * 1000); |
| 147 | } |
| 148 | static ssize_t |
| 149 | nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a, |
| 150 | const char *buf, size_t count) |
| 151 | { |
| 152 | struct drm_device *dev = dev_get_drvdata(d); |
| 153 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 154 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 155 | long value; |
| 156 | |
| 157 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 158 | return count; |
| 159 | |
| 160 | therm->attr_set(therm, NOUVEAU_THERM_ATTR_THRS_DOWN_CLK, value / 1000); |
| 161 | |
| 162 | return count; |
| 163 | } |
| 164 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp, |
| 165 | nouveau_hwmon_set_max_temp, |
| 166 | 0); |
| 167 | |
| 168 | static ssize_t |
| 169 | nouveau_hwmon_max_temp_hyst(struct device *d, struct device_attribute *a, |
| 170 | char *buf) |
| 171 | { |
| 172 | struct drm_device *dev = dev_get_drvdata(d); |
| 173 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 174 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 175 | |
| 176 | return snprintf(buf, PAGE_SIZE, "%d\n" , |
| 177 | therm->attr_get(therm, NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST) * 1000); |
| 178 | } |
| 179 | static ssize_t |
| 180 | nouveau_hwmon_set_max_temp_hyst(struct device *d, struct device_attribute *a, |
| 181 | const char *buf, size_t count) |
| 182 | { |
| 183 | struct drm_device *dev = dev_get_drvdata(d); |
| 184 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 185 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 186 | long value; |
| 187 | |
| 188 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 189 | return count; |
| 190 | |
| 191 | therm->attr_set(therm, NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST, |
| 192 | value / 1000); |
| 193 | |
| 194 | return count; |
| 195 | } |
| 196 | static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, |
| 197 | nouveau_hwmon_max_temp_hyst, |
| 198 | nouveau_hwmon_set_max_temp_hyst, 0); |
| 199 | |
| 200 | static ssize_t |
| 201 | nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a, |
| 202 | char *buf) |
| 203 | { |
| 204 | struct drm_device *dev = dev_get_drvdata(d); |
| 205 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 206 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 207 | |
| 208 | return snprintf(buf, PAGE_SIZE, "%d\n" , |
| 209 | therm->attr_get(therm, NOUVEAU_THERM_ATTR_THRS_CRITICAL) * 1000); |
| 210 | } |
| 211 | static ssize_t |
| 212 | nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a, |
| 213 | const char *buf, |
| 214 | size_t count) |
| 215 | { |
| 216 | struct drm_device *dev = dev_get_drvdata(d); |
| 217 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 218 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 219 | long value; |
| 220 | |
| 221 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 222 | return count; |
| 223 | |
| 224 | therm->attr_set(therm, NOUVEAU_THERM_ATTR_THRS_CRITICAL, value / 1000); |
| 225 | |
| 226 | return count; |
| 227 | } |
| 228 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR, |
| 229 | nouveau_hwmon_critical_temp, |
| 230 | nouveau_hwmon_set_critical_temp, |
| 231 | 0); |
| 232 | |
| 233 | static ssize_t |
| 234 | nouveau_hwmon_critical_temp_hyst(struct device *d, struct device_attribute *a, |
| 235 | char *buf) |
| 236 | { |
| 237 | struct drm_device *dev = dev_get_drvdata(d); |
| 238 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 239 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 240 | |
| 241 | return snprintf(buf, PAGE_SIZE, "%d\n" , |
| 242 | therm->attr_get(therm, NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST) * 1000); |
| 243 | } |
| 244 | static ssize_t |
| 245 | nouveau_hwmon_set_critical_temp_hyst(struct device *d, |
| 246 | struct device_attribute *a, |
| 247 | const char *buf, |
| 248 | size_t count) |
| 249 | { |
| 250 | struct drm_device *dev = dev_get_drvdata(d); |
| 251 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 252 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 253 | long value; |
| 254 | |
| 255 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 256 | return count; |
| 257 | |
| 258 | therm->attr_set(therm, NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST, |
| 259 | value / 1000); |
| 260 | |
| 261 | return count; |
| 262 | } |
| 263 | static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO | S_IWUSR, |
| 264 | nouveau_hwmon_critical_temp_hyst, |
| 265 | nouveau_hwmon_set_critical_temp_hyst, 0); |
| 266 | static ssize_t |
| 267 | nouveau_hwmon_emergency_temp(struct device *d, struct device_attribute *a, |
| 268 | char *buf) |
| 269 | { |
| 270 | struct drm_device *dev = dev_get_drvdata(d); |
| 271 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 272 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 273 | |
| 274 | return snprintf(buf, PAGE_SIZE, "%d\n" , |
| 275 | therm->attr_get(therm, NOUVEAU_THERM_ATTR_THRS_SHUTDOWN) * 1000); |
| 276 | } |
| 277 | static ssize_t |
| 278 | nouveau_hwmon_set_emergency_temp(struct device *d, struct device_attribute *a, |
| 279 | const char *buf, |
| 280 | size_t count) |
| 281 | { |
| 282 | struct drm_device *dev = dev_get_drvdata(d); |
| 283 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 284 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 285 | long value; |
| 286 | |
| 287 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 288 | return count; |
| 289 | |
| 290 | therm->attr_set(therm, NOUVEAU_THERM_ATTR_THRS_SHUTDOWN, value / 1000); |
| 291 | |
| 292 | return count; |
| 293 | } |
| 294 | static SENSOR_DEVICE_ATTR(temp1_emergency, S_IRUGO | S_IWUSR, |
| 295 | nouveau_hwmon_emergency_temp, |
| 296 | nouveau_hwmon_set_emergency_temp, |
| 297 | 0); |
| 298 | |
| 299 | static ssize_t |
| 300 | nouveau_hwmon_emergency_temp_hyst(struct device *d, struct device_attribute *a, |
| 301 | char *buf) |
| 302 | { |
| 303 | struct drm_device *dev = dev_get_drvdata(d); |
| 304 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 305 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 306 | |
| 307 | return snprintf(buf, PAGE_SIZE, "%d\n" , |
| 308 | therm->attr_get(therm, NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST) * 1000); |
| 309 | } |
| 310 | static ssize_t |
| 311 | nouveau_hwmon_set_emergency_temp_hyst(struct device *d, |
| 312 | struct device_attribute *a, |
| 313 | const char *buf, |
| 314 | size_t count) |
| 315 | { |
| 316 | struct drm_device *dev = dev_get_drvdata(d); |
| 317 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 318 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 319 | long value; |
| 320 | |
| 321 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 322 | return count; |
| 323 | |
| 324 | therm->attr_set(therm, NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST, |
| 325 | value / 1000); |
| 326 | |
| 327 | return count; |
| 328 | } |
| 329 | static SENSOR_DEVICE_ATTR(temp1_emergency_hyst, S_IRUGO | S_IWUSR, |
| 330 | nouveau_hwmon_emergency_temp_hyst, |
| 331 | nouveau_hwmon_set_emergency_temp_hyst, |
| 332 | 0); |
| 333 | |
| 334 | static ssize_t nouveau_hwmon_show_name(struct device *dev, |
| 335 | struct device_attribute *attr, |
| 336 | char *buf) |
| 337 | { |
| 338 | return sprintf(buf, "nouveau\n" ); |
| 339 | } |
| 340 | static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0); |
| 341 | |
| 342 | static ssize_t nouveau_hwmon_show_update_rate(struct device *dev, |
| 343 | struct device_attribute *attr, |
| 344 | char *buf) |
| 345 | { |
| 346 | return sprintf(buf, "1000\n" ); |
| 347 | } |
| 348 | static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO, |
| 349 | nouveau_hwmon_show_update_rate, |
| 350 | NULL, 0); |
| 351 | |
| 352 | static ssize_t |
| 353 | nouveau_hwmon_show_fan1_input(struct device *d, struct device_attribute *attr, |
| 354 | char *buf) |
| 355 | { |
| 356 | struct drm_device *dev = dev_get_drvdata(d); |
| 357 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 358 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 359 | |
| 360 | return snprintf(buf, PAGE_SIZE, "%d\n" , therm->fan_sense(therm)); |
| 361 | } |
| 362 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, nouveau_hwmon_show_fan1_input, |
| 363 | NULL, 0); |
| 364 | |
| 365 | static ssize_t |
| 366 | nouveau_hwmon_get_pwm1_enable(struct device *d, |
| 367 | struct device_attribute *a, char *buf) |
| 368 | { |
| 369 | struct drm_device *dev = dev_get_drvdata(d); |
| 370 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 371 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 372 | int ret; |
| 373 | |
| 374 | ret = therm->attr_get(therm, NOUVEAU_THERM_ATTR_FAN_MODE); |
| 375 | if (ret < 0) |
| 376 | return ret; |
| 377 | |
| 378 | return sprintf(buf, "%i\n" , ret); |
| 379 | } |
| 380 | |
| 381 | static ssize_t |
| 382 | nouveau_hwmon_set_pwm1_enable(struct device *d, struct device_attribute *a, |
| 383 | const char *buf, size_t count) |
| 384 | { |
| 385 | struct drm_device *dev = dev_get_drvdata(d); |
| 386 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 387 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 388 | long value; |
| 389 | int ret; |
| 390 | |
| 391 | ret = kstrtol(buf, 10, &value); |
| 392 | if (ret) |
| 393 | return ret; |
| 394 | |
| 395 | ret = therm->attr_set(therm, NOUVEAU_THERM_ATTR_FAN_MODE, value); |
| 396 | if (ret) |
| 397 | return ret; |
| 398 | else |
| 399 | return count; |
| 400 | } |
| 401 | static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, |
| 402 | nouveau_hwmon_get_pwm1_enable, |
| 403 | nouveau_hwmon_set_pwm1_enable, 0); |
| 404 | |
| 405 | static ssize_t |
| 406 | nouveau_hwmon_get_pwm1(struct device *d, struct device_attribute *a, char *buf) |
| 407 | { |
| 408 | struct drm_device *dev = dev_get_drvdata(d); |
| 409 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 410 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 411 | int ret; |
| 412 | |
| 413 | ret = therm->fan_get(therm); |
| 414 | if (ret < 0) |
| 415 | return ret; |
| 416 | |
| 417 | return sprintf(buf, "%i\n" , ret); |
| 418 | } |
| 419 | |
| 420 | static ssize_t |
| 421 | nouveau_hwmon_set_pwm1(struct device *d, struct device_attribute *a, |
| 422 | const char *buf, size_t count) |
| 423 | { |
| 424 | struct drm_device *dev = dev_get_drvdata(d); |
| 425 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 426 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 427 | int ret = -ENODEV; |
| 428 | long value; |
| 429 | |
| 430 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 431 | return -EINVAL; |
| 432 | |
| 433 | ret = therm->fan_set(therm, value); |
| 434 | if (ret) |
| 435 | return ret; |
| 436 | |
| 437 | return count; |
| 438 | } |
| 439 | |
| 440 | static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, |
| 441 | nouveau_hwmon_get_pwm1, |
| 442 | nouveau_hwmon_set_pwm1, 0); |
| 443 | |
| 444 | static ssize_t |
| 445 | nouveau_hwmon_get_pwm1_min(struct device *d, |
| 446 | struct device_attribute *a, char *buf) |
| 447 | { |
| 448 | struct drm_device *dev = dev_get_drvdata(d); |
| 449 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 450 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 451 | int ret; |
| 452 | |
| 453 | ret = therm->attr_get(therm, NOUVEAU_THERM_ATTR_FAN_MIN_DUTY); |
| 454 | if (ret < 0) |
| 455 | return ret; |
| 456 | |
| 457 | return sprintf(buf, "%i\n" , ret); |
| 458 | } |
| 459 | |
| 460 | static ssize_t |
| 461 | nouveau_hwmon_set_pwm1_min(struct device *d, struct device_attribute *a, |
| 462 | const char *buf, size_t count) |
| 463 | { |
| 464 | struct drm_device *dev = dev_get_drvdata(d); |
| 465 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 466 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 467 | long value; |
| 468 | int ret; |
| 469 | |
| 470 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 471 | return -EINVAL; |
| 472 | |
| 473 | ret = therm->attr_set(therm, NOUVEAU_THERM_ATTR_FAN_MIN_DUTY, value); |
| 474 | if (ret < 0) |
| 475 | return ret; |
| 476 | |
| 477 | return count; |
| 478 | } |
| 479 | |
| 480 | static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO | S_IWUSR, |
| 481 | nouveau_hwmon_get_pwm1_min, |
| 482 | nouveau_hwmon_set_pwm1_min, 0); |
| 483 | |
| 484 | static ssize_t |
| 485 | nouveau_hwmon_get_pwm1_max(struct device *d, |
| 486 | struct device_attribute *a, char *buf) |
| 487 | { |
| 488 | struct drm_device *dev = dev_get_drvdata(d); |
| 489 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 490 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 491 | int ret; |
| 492 | |
| 493 | ret = therm->attr_get(therm, NOUVEAU_THERM_ATTR_FAN_MAX_DUTY); |
| 494 | if (ret < 0) |
| 495 | return ret; |
| 496 | |
| 497 | return sprintf(buf, "%i\n" , ret); |
| 498 | } |
| 499 | |
| 500 | static ssize_t |
| 501 | nouveau_hwmon_set_pwm1_max(struct device *d, struct device_attribute *a, |
| 502 | const char *buf, size_t count) |
| 503 | { |
| 504 | struct drm_device *dev = dev_get_drvdata(d); |
| 505 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 506 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 507 | long value; |
| 508 | int ret; |
| 509 | |
| 510 | if (kstrtol(buf, 10, &value) == -EINVAL) |
| 511 | return -EINVAL; |
| 512 | |
| 513 | ret = therm->attr_set(therm, NOUVEAU_THERM_ATTR_FAN_MAX_DUTY, value); |
| 514 | if (ret < 0) |
| 515 | return ret; |
| 516 | |
| 517 | return count; |
| 518 | } |
| 519 | |
| 520 | static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO | S_IWUSR, |
| 521 | nouveau_hwmon_get_pwm1_max, |
| 522 | nouveau_hwmon_set_pwm1_max, 0); |
| 523 | |
| 524 | static struct attribute *hwmon_default_attributes[] = { |
| 525 | &sensor_dev_attr_name.dev_attr.attr, |
| 526 | &sensor_dev_attr_update_rate.dev_attr.attr, |
| 527 | NULL |
| 528 | }; |
| 529 | static struct attribute *hwmon_temp_attributes[] = { |
| 530 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
| 531 | &sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr, |
| 532 | &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, |
| 533 | &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr, |
| 534 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
| 535 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, |
| 536 | &sensor_dev_attr_temp1_crit.dev_attr.attr, |
| 537 | &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, |
| 538 | &sensor_dev_attr_temp1_emergency.dev_attr.attr, |
| 539 | &sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr, |
| 540 | NULL |
| 541 | }; |
| 542 | static struct attribute *hwmon_fan_rpm_attributes[] = { |
| 543 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
| 544 | NULL |
| 545 | }; |
| 546 | static struct attribute *hwmon_pwm_fan_attributes[] = { |
| 547 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
| 548 | &sensor_dev_attr_pwm1.dev_attr.attr, |
| 549 | &sensor_dev_attr_pwm1_min.dev_attr.attr, |
| 550 | &sensor_dev_attr_pwm1_max.dev_attr.attr, |
| 551 | NULL |
| 552 | }; |
| 553 | |
| 554 | static const struct attribute_group hwmon_default_attrgroup = { |
| 555 | .attrs = hwmon_default_attributes, |
| 556 | }; |
| 557 | static const struct attribute_group hwmon_temp_attrgroup = { |
| 558 | .attrs = hwmon_temp_attributes, |
| 559 | }; |
| 560 | static const struct attribute_group hwmon_fan_rpm_attrgroup = { |
| 561 | .attrs = hwmon_fan_rpm_attributes, |
| 562 | }; |
| 563 | static const struct attribute_group hwmon_pwm_fan_attrgroup = { |
| 564 | .attrs = hwmon_pwm_fan_attributes, |
| 565 | }; |
| 566 | #endif |
| 567 | |
| 568 | int |
| 569 | nouveau_hwmon_init(struct drm_device *dev) |
| 570 | { |
| 571 | #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE)) |
| 572 | struct nouveau_drm *drm = nouveau_drm(dev); |
| 573 | struct nouveau_therm *therm = nouveau_therm(drm->device); |
| 574 | struct nouveau_hwmon *hwmon; |
| 575 | struct device *hwmon_dev; |
| 576 | int ret = 0; |
| 577 | |
| 578 | hwmon = drm->hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL); |
| 579 | if (!hwmon) |
| 580 | return -ENOMEM; |
| 581 | hwmon->dev = dev; |
| 582 | |
| 583 | if (!therm || !therm->temp_get || !therm->attr_get || !therm->attr_set) |
| 584 | return -ENODEV; |
| 585 | |
| 586 | hwmon_dev = hwmon_device_register(&dev->pdev->dev); |
| 587 | if (IS_ERR(hwmon_dev)) { |
| 588 | ret = PTR_ERR(hwmon_dev); |
| 589 | NV_ERROR(drm, "Unable to register hwmon device: %d\n" , ret); |
| 590 | return ret; |
| 591 | } |
| 592 | dev_set_drvdata(hwmon_dev, dev); |
| 593 | |
| 594 | /* set the default attributes */ |
| 595 | ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_default_attrgroup); |
| 596 | if (ret) |
| 597 | goto error; |
| 598 | |
| 599 | /* if the card has a working thermal sensor */ |
| 600 | if (therm->temp_get(therm) >= 0) { |
| 601 | ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_temp_attrgroup); |
| 602 | if (ret) |
| 603 | goto error; |
| 604 | } |
| 605 | |
| 606 | /* if the card has a pwm fan */ |
| 607 | /*XXX: incorrect, need better detection for this, some boards have |
| 608 | * the gpio entries for pwm fan control even when there's no |
| 609 | * actual fan connected to it... therm table? */ |
| 610 | if (therm->fan_get && therm->fan_get(therm) >= 0) { |
| 611 | ret = sysfs_create_group(&hwmon_dev->kobj, |
| 612 | &hwmon_pwm_fan_attrgroup); |
| 613 | if (ret) |
| 614 | goto error; |
| 615 | } |
| 616 | |
| 617 | /* if the card can read the fan rpm */ |
| 618 | if (therm->fan_sense(therm) >= 0) { |
| 619 | ret = sysfs_create_group(&hwmon_dev->kobj, |
| 620 | &hwmon_fan_rpm_attrgroup); |
| 621 | if (ret) |
| 622 | goto error; |
| 623 | } |
| 624 | |
| 625 | hwmon->hwmon = hwmon_dev; |
| 626 | |
| 627 | return 0; |
| 628 | |
| 629 | error: |
| 630 | NV_ERROR(drm, "Unable to create some hwmon sysfs files: %d\n" , ret); |
| 631 | hwmon_device_unregister(hwmon_dev); |
| 632 | hwmon->hwmon = NULL; |
| 633 | return ret; |
| 634 | #else |
| 635 | return 0; |
| 636 | #endif |
| 637 | } |
| 638 | |
| 639 | void |
| 640 | nouveau_hwmon_fini(struct drm_device *dev) |
| 641 | { |
| 642 | #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE)) |
| 643 | struct nouveau_hwmon *hwmon = nouveau_hwmon(dev); |
| 644 | |
| 645 | if (hwmon->hwmon) { |
| 646 | sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_default_attrgroup); |
| 647 | sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_temp_attrgroup); |
| 648 | sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_pwm_fan_attrgroup); |
| 649 | sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_fan_rpm_attrgroup); |
| 650 | |
| 651 | hwmon_device_unregister(hwmon->hwmon); |
| 652 | } |
| 653 | |
| 654 | nouveau_drm(dev)->hwmon = NULL; |
| 655 | kfree(hwmon); |
| 656 | #endif |
| 657 | } |
| 658 | |