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1/*2 * Copyright 2010 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */24 25#ifdef CONFIG_ACPI26#include <linux/acpi.h>27#endif28#include <linux/power_supply.h>29#include <linux/hwmon.h>30#include <linux/hwmon-sysfs.h>31 32#include "nouveau_drv.h"33#include "nouveau_hwmon.h"34 35#include <nvkm/subdev/iccsense.h>36#include <nvkm/subdev/volt.h>37 38#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))39 40static ssize_t41nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d,42 struct device_attribute *a, char *buf)43{44 return sysfs_emit(buf, "%d\n", 100);45}46static SENSOR_DEVICE_ATTR(temp1_auto_point1_pwm, 0444,47 nouveau_hwmon_show_temp1_auto_point1_pwm, NULL, 0);48 49static ssize_t50nouveau_hwmon_temp1_auto_point1_temp(struct device *d,51 struct device_attribute *a, char *buf)52{53 struct drm_device *dev = dev_get_drvdata(d);54 struct nouveau_drm *drm = nouveau_drm(dev);55 struct nvkm_therm *therm = nvxx_therm(drm);56 57 return sysfs_emit(buf, "%d\n",58 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST) * 1000);59}60static ssize_t61nouveau_hwmon_set_temp1_auto_point1_temp(struct device *d,62 struct device_attribute *a,63 const char *buf, size_t count)64{65 struct drm_device *dev = dev_get_drvdata(d);66 struct nouveau_drm *drm = nouveau_drm(dev);67 struct nvkm_therm *therm = nvxx_therm(drm);68 long value;69 70 if (kstrtol(buf, 10, &value))71 return -EINVAL;72 73 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST,74 value / 1000);75 76 return count;77}78static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, 0644,79 nouveau_hwmon_temp1_auto_point1_temp,80 nouveau_hwmon_set_temp1_auto_point1_temp, 0);81 82static ssize_t83nouveau_hwmon_temp1_auto_point1_temp_hyst(struct device *d,84 struct device_attribute *a, char *buf)85{86 struct drm_device *dev = dev_get_drvdata(d);87 struct nouveau_drm *drm = nouveau_drm(dev);88 struct nvkm_therm *therm = nvxx_therm(drm);89 90 return sysfs_emit(buf, "%d\n",91 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000);92}93static ssize_t94nouveau_hwmon_set_temp1_auto_point1_temp_hyst(struct device *d,95 struct device_attribute *a,96 const char *buf, size_t count)97{98 struct drm_device *dev = dev_get_drvdata(d);99 struct nouveau_drm *drm = nouveau_drm(dev);100 struct nvkm_therm *therm = nvxx_therm(drm);101 long value;102 103 if (kstrtol(buf, 10, &value))104 return -EINVAL;105 106 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST,107 value / 1000);108 109 return count;110}111static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp_hyst, 0644,112 nouveau_hwmon_temp1_auto_point1_temp_hyst,113 nouveau_hwmon_set_temp1_auto_point1_temp_hyst, 0);114 115static ssize_t116nouveau_hwmon_get_pwm1_max(struct device *d,117 struct device_attribute *a, char *buf)118{119 struct drm_device *dev = dev_get_drvdata(d);120 struct nouveau_drm *drm = nouveau_drm(dev);121 struct nvkm_therm *therm = nvxx_therm(drm);122 int ret;123 124 ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY);125 if (ret < 0)126 return ret;127 128 return sprintf(buf, "%i\n", ret);129}130 131static ssize_t132nouveau_hwmon_get_pwm1_min(struct device *d,133 struct device_attribute *a, char *buf)134{135 struct drm_device *dev = dev_get_drvdata(d);136 struct nouveau_drm *drm = nouveau_drm(dev);137 struct nvkm_therm *therm = nvxx_therm(drm);138 int ret;139 140 ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY);141 if (ret < 0)142 return ret;143 144 return sprintf(buf, "%i\n", ret);145}146 147static ssize_t148nouveau_hwmon_set_pwm1_min(struct device *d, struct device_attribute *a,149 const char *buf, size_t count)150{151 struct drm_device *dev = dev_get_drvdata(d);152 struct nouveau_drm *drm = nouveau_drm(dev);153 struct nvkm_therm *therm = nvxx_therm(drm);154 long value;155 int ret;156 157 if (kstrtol(buf, 10, &value))158 return -EINVAL;159 160 ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY, value);161 if (ret < 0)162 return ret;163 164 return count;165}166static SENSOR_DEVICE_ATTR(pwm1_min, 0644,167 nouveau_hwmon_get_pwm1_min,168 nouveau_hwmon_set_pwm1_min, 0);169 170static ssize_t171nouveau_hwmon_set_pwm1_max(struct device *d, struct device_attribute *a,172 const char *buf, size_t count)173{174 struct drm_device *dev = dev_get_drvdata(d);175 struct nouveau_drm *drm = nouveau_drm(dev);176 struct nvkm_therm *therm = nvxx_therm(drm);177 long value;178 int ret;179 180 if (kstrtol(buf, 10, &value))181 return -EINVAL;182 183 ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY, value);184 if (ret < 0)185 return ret;186 187 return count;188}189static SENSOR_DEVICE_ATTR(pwm1_max, 0644,190 nouveau_hwmon_get_pwm1_max,191 nouveau_hwmon_set_pwm1_max, 0);192 193static struct attribute *pwm_fan_sensor_attrs[] = {194 &sensor_dev_attr_pwm1_min.dev_attr.attr,195 &sensor_dev_attr_pwm1_max.dev_attr.attr,196 NULL197};198static const struct attribute_group pwm_fan_sensor_group = {199 .attrs = pwm_fan_sensor_attrs,200};201 202static struct attribute *temp1_auto_point_sensor_attrs[] = {203 &sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr,204 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,205 &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,206 NULL207};208static const struct attribute_group temp1_auto_point_sensor_group = {209 .attrs = temp1_auto_point_sensor_attrs,210};211 212#define N_ATTR_GROUPS 3213 214static const struct hwmon_channel_info * const nouveau_info[] = {215 HWMON_CHANNEL_INFO(chip,216 HWMON_C_UPDATE_INTERVAL),217 HWMON_CHANNEL_INFO(temp,218 HWMON_T_INPUT |219 HWMON_T_MAX | HWMON_T_MAX_HYST |220 HWMON_T_CRIT | HWMON_T_CRIT_HYST |221 HWMON_T_EMERGENCY | HWMON_T_EMERGENCY_HYST),222 HWMON_CHANNEL_INFO(fan,223 HWMON_F_INPUT),224 HWMON_CHANNEL_INFO(in,225 HWMON_I_INPUT |226 HWMON_I_MIN | HWMON_I_MAX |227 HWMON_I_LABEL),228 HWMON_CHANNEL_INFO(pwm,229 HWMON_PWM_INPUT | HWMON_PWM_ENABLE),230 HWMON_CHANNEL_INFO(power,231 HWMON_P_INPUT | HWMON_P_CAP_MAX | HWMON_P_CRIT),232 NULL233};234 235static umode_t236nouveau_chip_is_visible(const void *data, u32 attr, int channel)237{238 switch (attr) {239 case hwmon_chip_update_interval:240 return 0444;241 default:242 return 0;243 }244}245 246static umode_t247nouveau_power_is_visible(const void *data, u32 attr, int channel)248{249 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);250 struct nvkm_iccsense *iccsense = nvxx_iccsense(drm);251 252 if (!iccsense || !iccsense->data_valid || list_empty(&iccsense->rails))253 return 0;254 255 switch (attr) {256 case hwmon_power_input:257 return 0444;258 case hwmon_power_max:259 if (iccsense->power_w_max)260 return 0444;261 return 0;262 case hwmon_power_crit:263 if (iccsense->power_w_crit)264 return 0444;265 return 0;266 default:267 return 0;268 }269}270 271static umode_t272nouveau_temp_is_visible(const void *data, u32 attr, int channel)273{274 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);275 struct nvkm_therm *therm = nvxx_therm(drm);276 277 if (!therm || !therm->attr_get || nvkm_therm_temp_get(therm) < 0)278 return 0;279 280 switch (attr) {281 case hwmon_temp_input:282 return 0444;283 case hwmon_temp_max:284 case hwmon_temp_max_hyst:285 case hwmon_temp_crit:286 case hwmon_temp_crit_hyst:287 case hwmon_temp_emergency:288 case hwmon_temp_emergency_hyst:289 return 0644;290 default:291 return 0;292 }293}294 295static umode_t296nouveau_pwm_is_visible(const void *data, u32 attr, int channel)297{298 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);299 struct nvkm_therm *therm = nvxx_therm(drm);300 301 if (!therm || !therm->attr_get || !therm->fan_get ||302 therm->fan_get(therm) < 0)303 return 0;304 305 switch (attr) {306 case hwmon_pwm_enable:307 case hwmon_pwm_input:308 return 0644;309 default:310 return 0;311 }312}313 314static umode_t315nouveau_input_is_visible(const void *data, u32 attr, int channel)316{317 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);318 struct nvkm_volt *volt = nvxx_volt(drm);319 320 if (!volt || nvkm_volt_get(volt) < 0)321 return 0;322 323 switch (attr) {324 case hwmon_in_input:325 case hwmon_in_label:326 case hwmon_in_min:327 case hwmon_in_max:328 return 0444;329 default:330 return 0;331 }332}333 334static umode_t335nouveau_fan_is_visible(const void *data, u32 attr, int channel)336{337 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);338 struct nvkm_therm *therm = nvxx_therm(drm);339 340 if (!therm || !therm->attr_get || nvkm_therm_fan_sense(therm) < 0)341 return 0;342 343 switch (attr) {344 case hwmon_fan_input:345 return 0444;346 default:347 return 0;348 }349}350 351static int352nouveau_chip_read(struct device *dev, u32 attr, int channel, long *val)353{354 switch (attr) {355 case hwmon_chip_update_interval:356 *val = 1000;357 break;358 default:359 return -EOPNOTSUPP;360 }361 362 return 0;363}364 365static int366nouveau_temp_read(struct device *dev, u32 attr, int channel, long *val)367{368 struct drm_device *drm_dev = dev_get_drvdata(dev);369 struct nouveau_drm *drm = nouveau_drm(drm_dev);370 struct nvkm_therm *therm = nvxx_therm(drm);371 int ret;372 373 if (!therm || !therm->attr_get)374 return -EOPNOTSUPP;375 376 switch (attr) {377 case hwmon_temp_input:378 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)379 return -EINVAL;380 ret = nvkm_therm_temp_get(therm);381 *val = ret < 0 ? ret : (ret * 1000);382 break;383 case hwmon_temp_max:384 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK)385 * 1000;386 break;387 case hwmon_temp_max_hyst:388 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST)389 * 1000;390 break;391 case hwmon_temp_crit:392 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL)393 * 1000;394 break;395 case hwmon_temp_crit_hyst:396 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST)397 * 1000;398 break;399 case hwmon_temp_emergency:400 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN)401 * 1000;402 break;403 case hwmon_temp_emergency_hyst:404 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST)405 * 1000;406 break;407 default:408 return -EOPNOTSUPP;409 }410 411 return 0;412}413 414static int415nouveau_fan_read(struct device *dev, u32 attr, int channel, long *val)416{417 struct drm_device *drm_dev = dev_get_drvdata(dev);418 struct nouveau_drm *drm = nouveau_drm(drm_dev);419 struct nvkm_therm *therm = nvxx_therm(drm);420 421 if (!therm)422 return -EOPNOTSUPP;423 424 switch (attr) {425 case hwmon_fan_input:426 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)427 return -EINVAL;428 *val = nvkm_therm_fan_sense(therm);429 break;430 default:431 return -EOPNOTSUPP;432 }433 434 return 0;435}436 437static int438nouveau_in_read(struct device *dev, u32 attr, int channel, long *val)439{440 struct drm_device *drm_dev = dev_get_drvdata(dev);441 struct nouveau_drm *drm = nouveau_drm(drm_dev);442 struct nvkm_volt *volt = nvxx_volt(drm);443 int ret;444 445 if (!volt)446 return -EOPNOTSUPP;447 448 switch (attr) {449 case hwmon_in_input:450 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)451 return -EINVAL;452 ret = nvkm_volt_get(volt);453 *val = ret < 0 ? ret : (ret / 1000);454 break;455 case hwmon_in_min:456 *val = volt->min_uv > 0 ? (volt->min_uv / 1000) : -ENODEV;457 break;458 case hwmon_in_max:459 *val = volt->max_uv > 0 ? (volt->max_uv / 1000) : -ENODEV;460 break;461 default:462 return -EOPNOTSUPP;463 }464 465 return 0;466}467 468static int469nouveau_pwm_read(struct device *dev, u32 attr, int channel, long *val)470{471 struct drm_device *drm_dev = dev_get_drvdata(dev);472 struct nouveau_drm *drm = nouveau_drm(drm_dev);473 struct nvkm_therm *therm = nvxx_therm(drm);474 475 if (!therm || !therm->attr_get || !therm->fan_get)476 return -EOPNOTSUPP;477 478 switch (attr) {479 case hwmon_pwm_enable:480 *val = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MODE);481 break;482 case hwmon_pwm_input:483 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)484 return -EINVAL;485 *val = therm->fan_get(therm);486 break;487 default:488 return -EOPNOTSUPP;489 }490 491 return 0;492}493 494static int495nouveau_power_read(struct device *dev, u32 attr, int channel, long *val)496{497 struct drm_device *drm_dev = dev_get_drvdata(dev);498 struct nouveau_drm *drm = nouveau_drm(drm_dev);499 struct nvkm_iccsense *iccsense = nvxx_iccsense(drm);500 501 if (!iccsense)502 return -EOPNOTSUPP;503 504 switch (attr) {505 case hwmon_power_input:506 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)507 return -EINVAL;508 *val = nvkm_iccsense_read_all(iccsense);509 break;510 case hwmon_power_max:511 *val = iccsense->power_w_max;512 break;513 case hwmon_power_crit:514 *val = iccsense->power_w_crit;515 break;516 default:517 return -EOPNOTSUPP;518 }519 520 return 0;521}522 523static int524nouveau_temp_write(struct device *dev, u32 attr, int channel, long val)525{526 struct drm_device *drm_dev = dev_get_drvdata(dev);527 struct nouveau_drm *drm = nouveau_drm(drm_dev);528 struct nvkm_therm *therm = nvxx_therm(drm);529 530 if (!therm || !therm->attr_set)531 return -EOPNOTSUPP;532 533 switch (attr) {534 case hwmon_temp_max:535 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK,536 val / 1000);537 case hwmon_temp_max_hyst:538 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST,539 val / 1000);540 case hwmon_temp_crit:541 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL,542 val / 1000);543 case hwmon_temp_crit_hyst:544 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST,545 val / 1000);546 case hwmon_temp_emergency:547 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN,548 val / 1000);549 case hwmon_temp_emergency_hyst:550 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST,551 val / 1000);552 default:553 return -EOPNOTSUPP;554 }555}556 557static int558nouveau_pwm_write(struct device *dev, u32 attr, int channel, long val)559{560 struct drm_device *drm_dev = dev_get_drvdata(dev);561 struct nouveau_drm *drm = nouveau_drm(drm_dev);562 struct nvkm_therm *therm = nvxx_therm(drm);563 564 if (!therm || !therm->attr_set)565 return -EOPNOTSUPP;566 567 switch (attr) {568 case hwmon_pwm_input:569 return therm->fan_set(therm, val);570 case hwmon_pwm_enable:571 return therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MODE, val);572 default:573 return -EOPNOTSUPP;574 }575}576 577static umode_t578nouveau_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,579 int channel)580{581 switch (type) {582 case hwmon_chip:583 return nouveau_chip_is_visible(data, attr, channel);584 case hwmon_temp:585 return nouveau_temp_is_visible(data, attr, channel);586 case hwmon_fan:587 return nouveau_fan_is_visible(data, attr, channel);588 case hwmon_in:589 return nouveau_input_is_visible(data, attr, channel);590 case hwmon_pwm:591 return nouveau_pwm_is_visible(data, attr, channel);592 case hwmon_power:593 return nouveau_power_is_visible(data, attr, channel);594 default:595 return 0;596 }597}598 599static const char input_label[] = "GPU core";600 601static int602nouveau_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr,603 int channel, const char **buf)604{605 if (type == hwmon_in && attr == hwmon_in_label) {606 *buf = input_label;607 return 0;608 }609 610 return -EOPNOTSUPP;611}612 613static int614nouveau_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,615 int channel, long *val)616{617 switch (type) {618 case hwmon_chip:619 return nouveau_chip_read(dev, attr, channel, val);620 case hwmon_temp:621 return nouveau_temp_read(dev, attr, channel, val);622 case hwmon_fan:623 return nouveau_fan_read(dev, attr, channel, val);624 case hwmon_in:625 return nouveau_in_read(dev, attr, channel, val);626 case hwmon_pwm:627 return nouveau_pwm_read(dev, attr, channel, val);628 case hwmon_power:629 return nouveau_power_read(dev, attr, channel, val);630 default:631 return -EOPNOTSUPP;632 }633}634 635static int636nouveau_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,637 int channel, long val)638{639 switch (type) {640 case hwmon_temp:641 return nouveau_temp_write(dev, attr, channel, val);642 case hwmon_pwm:643 return nouveau_pwm_write(dev, attr, channel, val);644 default:645 return -EOPNOTSUPP;646 }647}648 649static const struct hwmon_ops nouveau_hwmon_ops = {650 .is_visible = nouveau_is_visible,651 .read = nouveau_read,652 .read_string = nouveau_read_string,653 .write = nouveau_write,654};655 656static const struct hwmon_chip_info nouveau_chip_info = {657 .ops = &nouveau_hwmon_ops,658 .info = nouveau_info,659};660#endif661 662int663nouveau_hwmon_init(struct drm_device *dev)664{665#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))666 struct nouveau_drm *drm = nouveau_drm(dev);667 struct nvkm_iccsense *iccsense = nvxx_iccsense(drm);668 struct nvkm_therm *therm = nvxx_therm(drm);669 struct nvkm_volt *volt = nvxx_volt(drm);670 const struct attribute_group *special_groups[N_ATTR_GROUPS];671 struct nouveau_hwmon *hwmon;672 struct device *hwmon_dev;673 int ret = 0;674 int i = 0;675 676 if (!iccsense && !therm && !volt) {677 NV_DEBUG(drm, "Skipping hwmon registration\n");678 return 0;679 }680 681 hwmon = drm->hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL);682 if (!hwmon)683 return -ENOMEM;684 hwmon->dev = dev;685 686 if (therm && therm->attr_get && therm->attr_set) {687 if (nvkm_therm_temp_get(therm) >= 0)688 special_groups[i++] = &temp1_auto_point_sensor_group;689 if (therm->fan_get && therm->fan_get(therm) >= 0)690 special_groups[i++] = &pwm_fan_sensor_group;691 }692 693 special_groups[i] = NULL;694 hwmon_dev = hwmon_device_register_with_info(dev->dev, "nouveau", dev,695 &nouveau_chip_info,696 special_groups);697 if (IS_ERR(hwmon_dev)) {698 ret = PTR_ERR(hwmon_dev);699 NV_ERROR(drm, "Unable to register hwmon device: %d\n", ret);700 return ret;701 }702 703 hwmon->hwmon = hwmon_dev;704 return 0;705#else706 return 0;707#endif708}709 710void711nouveau_hwmon_fini(struct drm_device *dev)712{713#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))714 struct nouveau_hwmon *hwmon = nouveau_hwmon(dev);715 716 if (!hwmon)717 return;718 719 if (hwmon->hwmon)720 hwmon_device_unregister(hwmon->hwmon);721 722 nouveau_drm(dev)->hwmon = NULL;723 kfree(hwmon);724#endif725}726