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1 | /* |
2 | * Permission is hereby granted, free of charge, to any person obtaining a | |
3 | * copy of this software and associated documentation files (the "Software"), | |
4 | * to deal in the Software without restriction, including without limitation | |
5 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
6 | * and/or sell copies of the Software, and to permit persons to whom the | |
7 | * Software is furnished to do so, subject to the following conditions: | |
8 | * | |
9 | * The above copyright notice and this permission notice shall be included in | |
10 | * all copies or substantial portions of the Software. | |
11 | * | |
12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
13 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
15 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
16 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
17 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
18 | * OTHER DEALINGS IN THE SOFTWARE. | |
19 | * | |
20 | * Authors: Rafał Miłecki <zajec5@gmail.com> | |
21 | * Alex Deucher <alexdeucher@gmail.com> | |
22 | */ | |
23 | #include <drm/drmP.h> | |
24 | #include "amdgpu.h" | |
25 | #include "amdgpu_drv.h" | |
26 | #include "amdgpu_pm.h" | |
27 | #include "amdgpu_dpm.h" | |
28 | #include "atom.h" | |
29 | #include <linux/power_supply.h> | |
30 | #include <linux/hwmon.h> | |
31 | #include <linux/hwmon-sysfs.h> | |
32 | ||
33 | static int amdgpu_debugfs_pm_init(struct amdgpu_device *adev); | |
34 | ||
35 | void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev) | |
36 | { | |
37 | if (adev->pm.dpm_enabled) { | |
38 | mutex_lock(&adev->pm.mutex); | |
39 | if (power_supply_is_system_supplied() > 0) | |
40 | adev->pm.dpm.ac_power = true; | |
41 | else | |
42 | adev->pm.dpm.ac_power = false; | |
43 | if (adev->pm.funcs->enable_bapm) | |
44 | amdgpu_dpm_enable_bapm(adev, adev->pm.dpm.ac_power); | |
45 | mutex_unlock(&adev->pm.mutex); | |
46 | } | |
47 | } | |
48 | ||
49 | static ssize_t amdgpu_get_dpm_state(struct device *dev, | |
50 | struct device_attribute *attr, | |
51 | char *buf) | |
52 | { | |
53 | struct drm_device *ddev = dev_get_drvdata(dev); | |
54 | struct amdgpu_device *adev = ddev->dev_private; | |
55 | enum amdgpu_pm_state_type pm = adev->pm.dpm.user_state; | |
56 | ||
57 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
58 | (pm == POWER_STATE_TYPE_BATTERY) ? "battery" : | |
59 | (pm == POWER_STATE_TYPE_BALANCED) ? "balanced" : "performance"); | |
60 | } | |
61 | ||
62 | static ssize_t amdgpu_set_dpm_state(struct device *dev, | |
63 | struct device_attribute *attr, | |
64 | const char *buf, | |
65 | size_t count) | |
66 | { | |
67 | struct drm_device *ddev = dev_get_drvdata(dev); | |
68 | struct amdgpu_device *adev = ddev->dev_private; | |
69 | ||
70 | mutex_lock(&adev->pm.mutex); | |
71 | if (strncmp("battery", buf, strlen("battery")) == 0) | |
72 | adev->pm.dpm.user_state = POWER_STATE_TYPE_BATTERY; | |
73 | else if (strncmp("balanced", buf, strlen("balanced")) == 0) | |
74 | adev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED; | |
75 | else if (strncmp("performance", buf, strlen("performance")) == 0) | |
76 | adev->pm.dpm.user_state = POWER_STATE_TYPE_PERFORMANCE; | |
77 | else { | |
78 | mutex_unlock(&adev->pm.mutex); | |
79 | count = -EINVAL; | |
80 | goto fail; | |
81 | } | |
82 | mutex_unlock(&adev->pm.mutex); | |
83 | ||
84 | /* Can't set dpm state when the card is off */ | |
85 | if (!(adev->flags & AMDGPU_IS_PX) || | |
86 | (ddev->switch_power_state == DRM_SWITCH_POWER_ON)) | |
87 | amdgpu_pm_compute_clocks(adev); | |
88 | fail: | |
89 | return count; | |
90 | } | |
91 | ||
92 | static ssize_t amdgpu_get_dpm_forced_performance_level(struct device *dev, | |
93 | struct device_attribute *attr, | |
94 | char *buf) | |
95 | { | |
96 | struct drm_device *ddev = dev_get_drvdata(dev); | |
97 | struct amdgpu_device *adev = ddev->dev_private; | |
98 | enum amdgpu_dpm_forced_level level = adev->pm.dpm.forced_level; | |
99 | ||
100 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
101 | (level == AMDGPU_DPM_FORCED_LEVEL_AUTO) ? "auto" : | |
102 | (level == AMDGPU_DPM_FORCED_LEVEL_LOW) ? "low" : "high"); | |
103 | } | |
104 | ||
105 | static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev, | |
106 | struct device_attribute *attr, | |
107 | const char *buf, | |
108 | size_t count) | |
109 | { | |
110 | struct drm_device *ddev = dev_get_drvdata(dev); | |
111 | struct amdgpu_device *adev = ddev->dev_private; | |
112 | enum amdgpu_dpm_forced_level level; | |
113 | int ret = 0; | |
114 | ||
115 | mutex_lock(&adev->pm.mutex); | |
116 | if (strncmp("low", buf, strlen("low")) == 0) { | |
117 | level = AMDGPU_DPM_FORCED_LEVEL_LOW; | |
118 | } else if (strncmp("high", buf, strlen("high")) == 0) { | |
119 | level = AMDGPU_DPM_FORCED_LEVEL_HIGH; | |
120 | } else if (strncmp("auto", buf, strlen("auto")) == 0) { | |
121 | level = AMDGPU_DPM_FORCED_LEVEL_AUTO; | |
122 | } else { | |
123 | count = -EINVAL; | |
124 | goto fail; | |
125 | } | |
126 | if (adev->pm.funcs->force_performance_level) { | |
127 | if (adev->pm.dpm.thermal_active) { | |
128 | count = -EINVAL; | |
129 | goto fail; | |
130 | } | |
131 | ret = amdgpu_dpm_force_performance_level(adev, level); | |
132 | if (ret) | |
133 | count = -EINVAL; | |
134 | } | |
135 | fail: | |
136 | mutex_unlock(&adev->pm.mutex); | |
137 | ||
138 | return count; | |
139 | } | |
140 | ||
141 | static DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, amdgpu_get_dpm_state, amdgpu_set_dpm_state); | |
142 | static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR, | |
143 | amdgpu_get_dpm_forced_performance_level, | |
144 | amdgpu_set_dpm_forced_performance_level); | |
145 | ||
146 | static ssize_t amdgpu_hwmon_show_temp(struct device *dev, | |
147 | struct device_attribute *attr, | |
148 | char *buf) | |
149 | { | |
150 | struct amdgpu_device *adev = dev_get_drvdata(dev); | |
151 | int temp; | |
152 | ||
153 | if (adev->pm.funcs->get_temperature) | |
154 | temp = amdgpu_dpm_get_temperature(adev); | |
155 | else | |
156 | temp = 0; | |
157 | ||
158 | return snprintf(buf, PAGE_SIZE, "%d\n", temp); | |
159 | } | |
160 | ||
161 | static ssize_t amdgpu_hwmon_show_temp_thresh(struct device *dev, | |
162 | struct device_attribute *attr, | |
163 | char *buf) | |
164 | { | |
165 | struct amdgpu_device *adev = dev_get_drvdata(dev); | |
166 | int hyst = to_sensor_dev_attr(attr)->index; | |
167 | int temp; | |
168 | ||
169 | if (hyst) | |
170 | temp = adev->pm.dpm.thermal.min_temp; | |
171 | else | |
172 | temp = adev->pm.dpm.thermal.max_temp; | |
173 | ||
174 | return snprintf(buf, PAGE_SIZE, "%d\n", temp); | |
175 | } | |
176 | ||
177 | static ssize_t amdgpu_hwmon_get_pwm1_enable(struct device *dev, | |
178 | struct device_attribute *attr, | |
179 | char *buf) | |
180 | { | |
181 | struct amdgpu_device *adev = dev_get_drvdata(dev); | |
182 | u32 pwm_mode = 0; | |
183 | ||
184 | if (adev->pm.funcs->get_fan_control_mode) | |
185 | pwm_mode = amdgpu_dpm_get_fan_control_mode(adev); | |
186 | ||
187 | /* never 0 (full-speed), fuse or smc-controlled always */ | |
188 | return sprintf(buf, "%i\n", pwm_mode == FDO_PWM_MODE_STATIC ? 1 : 2); | |
189 | } | |
190 | ||
191 | static ssize_t amdgpu_hwmon_set_pwm1_enable(struct device *dev, | |
192 | struct device_attribute *attr, | |
193 | const char *buf, | |
194 | size_t count) | |
195 | { | |
196 | struct amdgpu_device *adev = dev_get_drvdata(dev); | |
197 | int err; | |
198 | int value; | |
199 | ||
200 | if(!adev->pm.funcs->set_fan_control_mode) | |
201 | return -EINVAL; | |
202 | ||
203 | err = kstrtoint(buf, 10, &value); | |
204 | if (err) | |
205 | return err; | |
206 | ||
207 | switch (value) { | |
208 | case 1: /* manual, percent-based */ | |
209 | amdgpu_dpm_set_fan_control_mode(adev, FDO_PWM_MODE_STATIC); | |
210 | break; | |
211 | default: /* disable */ | |
212 | amdgpu_dpm_set_fan_control_mode(adev, 0); | |
213 | break; | |
214 | } | |
215 | ||
216 | return count; | |
217 | } | |
218 | ||
219 | static ssize_t amdgpu_hwmon_get_pwm1_min(struct device *dev, | |
220 | struct device_attribute *attr, | |
221 | char *buf) | |
222 | { | |
223 | return sprintf(buf, "%i\n", 0); | |
224 | } | |
225 | ||
226 | static ssize_t amdgpu_hwmon_get_pwm1_max(struct device *dev, | |
227 | struct device_attribute *attr, | |
228 | char *buf) | |
229 | { | |
230 | return sprintf(buf, "%i\n", 255); | |
231 | } | |
232 | ||
233 | static ssize_t amdgpu_hwmon_set_pwm1(struct device *dev, | |
234 | struct device_attribute *attr, | |
235 | const char *buf, size_t count) | |
236 | { | |
237 | struct amdgpu_device *adev = dev_get_drvdata(dev); | |
238 | int err; | |
239 | u32 value; | |
240 | ||
241 | err = kstrtou32(buf, 10, &value); | |
242 | if (err) | |
243 | return err; | |
244 | ||
245 | value = (value * 100) / 255; | |
246 | ||
247 | err = amdgpu_dpm_set_fan_speed_percent(adev, value); | |
248 | if (err) | |
249 | return err; | |
250 | ||
251 | return count; | |
252 | } | |
253 | ||
254 | static ssize_t amdgpu_hwmon_get_pwm1(struct device *dev, | |
255 | struct device_attribute *attr, | |
256 | char *buf) | |
257 | { | |
258 | struct amdgpu_device *adev = dev_get_drvdata(dev); | |
259 | int err; | |
260 | u32 speed; | |
261 | ||
262 | err = amdgpu_dpm_get_fan_speed_percent(adev, &speed); | |
263 | if (err) | |
264 | return err; | |
265 | ||
266 | speed = (speed * 255) / 100; | |
267 | ||
268 | return sprintf(buf, "%i\n", speed); | |
269 | } | |
270 | ||
271 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, amdgpu_hwmon_show_temp, NULL, 0); | |
272 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, amdgpu_hwmon_show_temp_thresh, NULL, 0); | |
273 | static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, amdgpu_hwmon_show_temp_thresh, NULL, 1); | |
274 | static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1, amdgpu_hwmon_set_pwm1, 0); | |
275 | static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1_enable, amdgpu_hwmon_set_pwm1_enable, 0); | |
276 | static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, amdgpu_hwmon_get_pwm1_min, NULL, 0); | |
277 | static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO, amdgpu_hwmon_get_pwm1_max, NULL, 0); | |
278 | ||
279 | static struct attribute *hwmon_attributes[] = { | |
280 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
281 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
282 | &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, | |
283 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
284 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
285 | &sensor_dev_attr_pwm1_min.dev_attr.attr, | |
286 | &sensor_dev_attr_pwm1_max.dev_attr.attr, | |
287 | NULL | |
288 | }; | |
289 | ||
290 | static umode_t hwmon_attributes_visible(struct kobject *kobj, | |
291 | struct attribute *attr, int index) | |
292 | { | |
293 | struct device *dev = container_of(kobj, struct device, kobj); | |
294 | struct amdgpu_device *adev = dev_get_drvdata(dev); | |
295 | umode_t effective_mode = attr->mode; | |
296 | ||
297 | /* Skip limit attributes if DPM is not enabled */ | |
298 | if (!adev->pm.dpm_enabled && | |
299 | (attr == &sensor_dev_attr_temp1_crit.dev_attr.attr || | |
300 | attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr)) | |
301 | return 0; | |
302 | ||
303 | /* Skip fan attributes if fan is not present */ | |
304 | if (adev->pm.no_fan && | |
305 | (attr == &sensor_dev_attr_pwm1.dev_attr.attr || | |
306 | attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr || | |
307 | attr == &sensor_dev_attr_pwm1_max.dev_attr.attr || | |
308 | attr == &sensor_dev_attr_pwm1_min.dev_attr.attr)) | |
309 | return 0; | |
310 | ||
311 | /* mask fan attributes if we have no bindings for this asic to expose */ | |
312 | if ((!adev->pm.funcs->get_fan_speed_percent && | |
313 | attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't query fan */ | |
314 | (!adev->pm.funcs->get_fan_control_mode && | |
315 | attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't query state */ | |
316 | effective_mode &= ~S_IRUGO; | |
317 | ||
318 | if ((!adev->pm.funcs->set_fan_speed_percent && | |
319 | attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't manage fan */ | |
320 | (!adev->pm.funcs->set_fan_control_mode && | |
321 | attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't manage state */ | |
322 | effective_mode &= ~S_IWUSR; | |
323 | ||
324 | /* hide max/min values if we can't both query and manage the fan */ | |
325 | if ((!adev->pm.funcs->set_fan_speed_percent && | |
326 | !adev->pm.funcs->get_fan_speed_percent) && | |
327 | (attr == &sensor_dev_attr_pwm1_max.dev_attr.attr || | |
328 | attr == &sensor_dev_attr_pwm1_min.dev_attr.attr)) | |
329 | return 0; | |
330 | ||
331 | return effective_mode; | |
332 | } | |
333 | ||
334 | static const struct attribute_group hwmon_attrgroup = { | |
335 | .attrs = hwmon_attributes, | |
336 | .is_visible = hwmon_attributes_visible, | |
337 | }; | |
338 | ||
339 | static const struct attribute_group *hwmon_groups[] = { | |
340 | &hwmon_attrgroup, | |
341 | NULL | |
342 | }; | |
343 | ||
344 | void amdgpu_dpm_thermal_work_handler(struct work_struct *work) | |
345 | { | |
346 | struct amdgpu_device *adev = | |
347 | container_of(work, struct amdgpu_device, | |
348 | pm.dpm.thermal.work); | |
349 | /* switch to the thermal state */ | |
350 | enum amdgpu_pm_state_type dpm_state = POWER_STATE_TYPE_INTERNAL_THERMAL; | |
351 | ||
352 | if (!adev->pm.dpm_enabled) | |
353 | return; | |
354 | ||
355 | if (adev->pm.funcs->get_temperature) { | |
356 | int temp = amdgpu_dpm_get_temperature(adev); | |
357 | ||
358 | if (temp < adev->pm.dpm.thermal.min_temp) | |
359 | /* switch back the user state */ | |
360 | dpm_state = adev->pm.dpm.user_state; | |
361 | } else { | |
362 | if (adev->pm.dpm.thermal.high_to_low) | |
363 | /* switch back the user state */ | |
364 | dpm_state = adev->pm.dpm.user_state; | |
365 | } | |
366 | mutex_lock(&adev->pm.mutex); | |
367 | if (dpm_state == POWER_STATE_TYPE_INTERNAL_THERMAL) | |
368 | adev->pm.dpm.thermal_active = true; | |
369 | else | |
370 | adev->pm.dpm.thermal_active = false; | |
371 | adev->pm.dpm.state = dpm_state; | |
372 | mutex_unlock(&adev->pm.mutex); | |
373 | ||
374 | amdgpu_pm_compute_clocks(adev); | |
375 | } | |
376 | ||
377 | static struct amdgpu_ps *amdgpu_dpm_pick_power_state(struct amdgpu_device *adev, | |
378 | enum amdgpu_pm_state_type dpm_state) | |
379 | { | |
380 | int i; | |
381 | struct amdgpu_ps *ps; | |
382 | u32 ui_class; | |
383 | bool single_display = (adev->pm.dpm.new_active_crtc_count < 2) ? | |
384 | true : false; | |
385 | ||
386 | /* check if the vblank period is too short to adjust the mclk */ | |
387 | if (single_display && adev->pm.funcs->vblank_too_short) { | |
388 | if (amdgpu_dpm_vblank_too_short(adev)) | |
389 | single_display = false; | |
390 | } | |
391 | ||
392 | /* certain older asics have a separare 3D performance state, | |
393 | * so try that first if the user selected performance | |
394 | */ | |
395 | if (dpm_state == POWER_STATE_TYPE_PERFORMANCE) | |
396 | dpm_state = POWER_STATE_TYPE_INTERNAL_3DPERF; | |
397 | /* balanced states don't exist at the moment */ | |
398 | if (dpm_state == POWER_STATE_TYPE_BALANCED) | |
399 | dpm_state = POWER_STATE_TYPE_PERFORMANCE; | |
400 | ||
401 | restart_search: | |
402 | /* Pick the best power state based on current conditions */ | |
403 | for (i = 0; i < adev->pm.dpm.num_ps; i++) { | |
404 | ps = &adev->pm.dpm.ps[i]; | |
405 | ui_class = ps->class & ATOM_PPLIB_CLASSIFICATION_UI_MASK; | |
406 | switch (dpm_state) { | |
407 | /* user states */ | |
408 | case POWER_STATE_TYPE_BATTERY: | |
409 | if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BATTERY) { | |
410 | if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) { | |
411 | if (single_display) | |
412 | return ps; | |
413 | } else | |
414 | return ps; | |
415 | } | |
416 | break; | |
417 | case POWER_STATE_TYPE_BALANCED: | |
418 | if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BALANCED) { | |
419 | if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) { | |
420 | if (single_display) | |
421 | return ps; | |
422 | } else | |
423 | return ps; | |
424 | } | |
425 | break; | |
426 | case POWER_STATE_TYPE_PERFORMANCE: | |
427 | if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE) { | |
428 | if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) { | |
429 | if (single_display) | |
430 | return ps; | |
431 | } else | |
432 | return ps; | |
433 | } | |
434 | break; | |
435 | /* internal states */ | |
436 | case POWER_STATE_TYPE_INTERNAL_UVD: | |
437 | if (adev->pm.dpm.uvd_ps) | |
438 | return adev->pm.dpm.uvd_ps; | |
439 | else | |
440 | break; | |
441 | case POWER_STATE_TYPE_INTERNAL_UVD_SD: | |
442 | if (ps->class & ATOM_PPLIB_CLASSIFICATION_SDSTATE) | |
443 | return ps; | |
444 | break; | |
445 | case POWER_STATE_TYPE_INTERNAL_UVD_HD: | |
446 | if (ps->class & ATOM_PPLIB_CLASSIFICATION_HDSTATE) | |
447 | return ps; | |
448 | break; | |
449 | case POWER_STATE_TYPE_INTERNAL_UVD_HD2: | |
450 | if (ps->class & ATOM_PPLIB_CLASSIFICATION_HD2STATE) | |
451 | return ps; | |
452 | break; | |
453 | case POWER_STATE_TYPE_INTERNAL_UVD_MVC: | |
454 | if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_MVC) | |
455 | return ps; | |
456 | break; | |
457 | case POWER_STATE_TYPE_INTERNAL_BOOT: | |
458 | return adev->pm.dpm.boot_ps; | |
459 | case POWER_STATE_TYPE_INTERNAL_THERMAL: | |
460 | if (ps->class & ATOM_PPLIB_CLASSIFICATION_THERMAL) | |
461 | return ps; | |
462 | break; | |
463 | case POWER_STATE_TYPE_INTERNAL_ACPI: | |
464 | if (ps->class & ATOM_PPLIB_CLASSIFICATION_ACPI) | |
465 | return ps; | |
466 | break; | |
467 | case POWER_STATE_TYPE_INTERNAL_ULV: | |
468 | if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_ULV) | |
469 | return ps; | |
470 | break; | |
471 | case POWER_STATE_TYPE_INTERNAL_3DPERF: | |
472 | if (ps->class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE) | |
473 | return ps; | |
474 | break; | |
475 | default: | |
476 | break; | |
477 | } | |
478 | } | |
479 | /* use a fallback state if we didn't match */ | |
480 | switch (dpm_state) { | |
481 | case POWER_STATE_TYPE_INTERNAL_UVD_SD: | |
482 | dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD; | |
483 | goto restart_search; | |
484 | case POWER_STATE_TYPE_INTERNAL_UVD_HD: | |
485 | case POWER_STATE_TYPE_INTERNAL_UVD_HD2: | |
486 | case POWER_STATE_TYPE_INTERNAL_UVD_MVC: | |
487 | if (adev->pm.dpm.uvd_ps) { | |
488 | return adev->pm.dpm.uvd_ps; | |
489 | } else { | |
490 | dpm_state = POWER_STATE_TYPE_PERFORMANCE; | |
491 | goto restart_search; | |
492 | } | |
493 | case POWER_STATE_TYPE_INTERNAL_THERMAL: | |
494 | dpm_state = POWER_STATE_TYPE_INTERNAL_ACPI; | |
495 | goto restart_search; | |
496 | case POWER_STATE_TYPE_INTERNAL_ACPI: | |
497 | dpm_state = POWER_STATE_TYPE_BATTERY; | |
498 | goto restart_search; | |
499 | case POWER_STATE_TYPE_BATTERY: | |
500 | case POWER_STATE_TYPE_BALANCED: | |
501 | case POWER_STATE_TYPE_INTERNAL_3DPERF: | |
502 | dpm_state = POWER_STATE_TYPE_PERFORMANCE; | |
503 | goto restart_search; | |
504 | default: | |
505 | break; | |
506 | } | |
507 | ||
508 | return NULL; | |
509 | } | |
510 | ||
511 | static void amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev) | |
512 | { | |
513 | int i; | |
514 | struct amdgpu_ps *ps; | |
515 | enum amdgpu_pm_state_type dpm_state; | |
516 | int ret; | |
517 | ||
518 | /* if dpm init failed */ | |
519 | if (!adev->pm.dpm_enabled) | |
520 | return; | |
521 | ||
522 | if (adev->pm.dpm.user_state != adev->pm.dpm.state) { | |
523 | /* add other state override checks here */ | |
524 | if ((!adev->pm.dpm.thermal_active) && | |
525 | (!adev->pm.dpm.uvd_active)) | |
526 | adev->pm.dpm.state = adev->pm.dpm.user_state; | |
527 | } | |
528 | dpm_state = adev->pm.dpm.state; | |
529 | ||
530 | ps = amdgpu_dpm_pick_power_state(adev, dpm_state); | |
531 | if (ps) | |
532 | adev->pm.dpm.requested_ps = ps; | |
533 | else | |
534 | return; | |
535 | ||
536 | /* no need to reprogram if nothing changed unless we are on BTC+ */ | |
537 | if (adev->pm.dpm.current_ps == adev->pm.dpm.requested_ps) { | |
538 | /* vce just modifies an existing state so force a change */ | |
539 | if (ps->vce_active != adev->pm.dpm.vce_active) | |
540 | goto force; | |
541 | if (adev->flags & AMDGPU_IS_APU) { | |
542 | /* for APUs if the num crtcs changed but state is the same, | |
543 | * all we need to do is update the display configuration. | |
544 | */ | |
545 | if (adev->pm.dpm.new_active_crtcs != adev->pm.dpm.current_active_crtcs) { | |
546 | /* update display watermarks based on new power state */ | |
547 | amdgpu_display_bandwidth_update(adev); | |
548 | /* update displays */ | |
549 | amdgpu_dpm_display_configuration_changed(adev); | |
550 | adev->pm.dpm.current_active_crtcs = adev->pm.dpm.new_active_crtcs; | |
551 | adev->pm.dpm.current_active_crtc_count = adev->pm.dpm.new_active_crtc_count; | |
552 | } | |
553 | return; | |
554 | } else { | |
555 | /* for BTC+ if the num crtcs hasn't changed and state is the same, | |
556 | * nothing to do, if the num crtcs is > 1 and state is the same, | |
557 | * update display configuration. | |
558 | */ | |
559 | if (adev->pm.dpm.new_active_crtcs == | |
560 | adev->pm.dpm.current_active_crtcs) { | |
561 | return; | |
562 | } else if ((adev->pm.dpm.current_active_crtc_count > 1) && | |
563 | (adev->pm.dpm.new_active_crtc_count > 1)) { | |
564 | /* update display watermarks based on new power state */ | |
565 | amdgpu_display_bandwidth_update(adev); | |
566 | /* update displays */ | |
567 | amdgpu_dpm_display_configuration_changed(adev); | |
568 | adev->pm.dpm.current_active_crtcs = adev->pm.dpm.new_active_crtcs; | |
569 | adev->pm.dpm.current_active_crtc_count = adev->pm.dpm.new_active_crtc_count; | |
570 | return; | |
571 | } | |
572 | } | |
573 | } | |
574 | ||
575 | force: | |
576 | if (amdgpu_dpm == 1) { | |
577 | printk("switching from power state:\n"); | |
578 | amdgpu_dpm_print_power_state(adev, adev->pm.dpm.current_ps); | |
579 | printk("switching to power state:\n"); | |
580 | amdgpu_dpm_print_power_state(adev, adev->pm.dpm.requested_ps); | |
581 | } | |
582 | ||
583 | mutex_lock(&adev->ddev->struct_mutex); | |
584 | down_write(&adev->pm.mclk_lock); | |
585 | mutex_lock(&adev->ring_lock); | |
586 | ||
587 | /* update whether vce is active */ | |
588 | ps->vce_active = adev->pm.dpm.vce_active; | |
589 | ||
590 | ret = amdgpu_dpm_pre_set_power_state(adev); | |
591 | if (ret) | |
592 | goto done; | |
593 | ||
594 | /* update display watermarks based on new power state */ | |
595 | amdgpu_display_bandwidth_update(adev); | |
596 | /* update displays */ | |
597 | amdgpu_dpm_display_configuration_changed(adev); | |
598 | ||
599 | adev->pm.dpm.current_active_crtcs = adev->pm.dpm.new_active_crtcs; | |
600 | adev->pm.dpm.current_active_crtc_count = adev->pm.dpm.new_active_crtc_count; | |
601 | ||
602 | /* wait for the rings to drain */ | |
603 | for (i = 0; i < AMDGPU_MAX_RINGS; i++) { | |
604 | struct amdgpu_ring *ring = adev->rings[i]; | |
605 | if (ring && ring->ready) | |
606 | amdgpu_fence_wait_empty(ring); | |
607 | } | |
608 | ||
609 | /* program the new power state */ | |
610 | amdgpu_dpm_set_power_state(adev); | |
611 | ||
612 | /* update current power state */ | |
613 | adev->pm.dpm.current_ps = adev->pm.dpm.requested_ps; | |
614 | ||
615 | amdgpu_dpm_post_set_power_state(adev); | |
616 | ||
617 | if (adev->pm.funcs->force_performance_level) { | |
618 | if (adev->pm.dpm.thermal_active) { | |
619 | enum amdgpu_dpm_forced_level level = adev->pm.dpm.forced_level; | |
620 | /* force low perf level for thermal */ | |
621 | amdgpu_dpm_force_performance_level(adev, AMDGPU_DPM_FORCED_LEVEL_LOW); | |
622 | /* save the user's level */ | |
623 | adev->pm.dpm.forced_level = level; | |
624 | } else { | |
625 | /* otherwise, user selected level */ | |
626 | amdgpu_dpm_force_performance_level(adev, adev->pm.dpm.forced_level); | |
627 | } | |
628 | } | |
629 | ||
630 | done: | |
631 | mutex_unlock(&adev->ring_lock); | |
632 | up_write(&adev->pm.mclk_lock); | |
633 | mutex_unlock(&adev->ddev->struct_mutex); | |
634 | } | |
635 | ||
636 | void amdgpu_dpm_enable_uvd(struct amdgpu_device *adev, bool enable) | |
637 | { | |
638 | if (adev->pm.funcs->powergate_uvd) { | |
639 | mutex_lock(&adev->pm.mutex); | |
640 | /* enable/disable UVD */ | |
641 | amdgpu_dpm_powergate_uvd(adev, !enable); | |
642 | mutex_unlock(&adev->pm.mutex); | |
643 | } else { | |
644 | if (enable) { | |
645 | mutex_lock(&adev->pm.mutex); | |
646 | adev->pm.dpm.uvd_active = true; | |
647 | adev->pm.dpm.state = POWER_STATE_TYPE_INTERNAL_UVD; | |
648 | mutex_unlock(&adev->pm.mutex); | |
649 | } else { | |
650 | mutex_lock(&adev->pm.mutex); | |
651 | adev->pm.dpm.uvd_active = false; | |
652 | mutex_unlock(&adev->pm.mutex); | |
653 | } | |
654 | ||
655 | amdgpu_pm_compute_clocks(adev); | |
656 | } | |
657 | } | |
658 | ||
659 | void amdgpu_dpm_enable_vce(struct amdgpu_device *adev, bool enable) | |
660 | { | |
661 | if (enable) { | |
662 | mutex_lock(&adev->pm.mutex); | |
663 | adev->pm.dpm.vce_active = true; | |
664 | /* XXX select vce level based on ring/task */ | |
665 | adev->pm.dpm.vce_level = AMDGPU_VCE_LEVEL_AC_ALL; | |
666 | mutex_unlock(&adev->pm.mutex); | |
667 | } else { | |
668 | mutex_lock(&adev->pm.mutex); | |
669 | adev->pm.dpm.vce_active = false; | |
670 | mutex_unlock(&adev->pm.mutex); | |
671 | } | |
672 | ||
673 | amdgpu_pm_compute_clocks(adev); | |
674 | } | |
675 | ||
676 | void amdgpu_pm_print_power_states(struct amdgpu_device *adev) | |
677 | { | |
678 | int i; | |
679 | ||
680 | for (i = 0; i < adev->pm.dpm.num_ps; i++) { | |
681 | printk("== power state %d ==\n", i); | |
682 | amdgpu_dpm_print_power_state(adev, &adev->pm.dpm.ps[i]); | |
683 | } | |
684 | } | |
685 | ||
686 | int amdgpu_pm_sysfs_init(struct amdgpu_device *adev) | |
687 | { | |
688 | int ret; | |
689 | ||
690 | if (adev->pm.funcs->get_temperature == NULL) | |
691 | return 0; | |
692 | adev->pm.int_hwmon_dev = hwmon_device_register_with_groups(adev->dev, | |
693 | DRIVER_NAME, adev, | |
694 | hwmon_groups); | |
695 | if (IS_ERR(adev->pm.int_hwmon_dev)) { | |
696 | ret = PTR_ERR(adev->pm.int_hwmon_dev); | |
697 | dev_err(adev->dev, | |
698 | "Unable to register hwmon device: %d\n", ret); | |
699 | return ret; | |
700 | } | |
701 | ||
702 | ret = device_create_file(adev->dev, &dev_attr_power_dpm_state); | |
703 | if (ret) { | |
704 | DRM_ERROR("failed to create device file for dpm state\n"); | |
705 | return ret; | |
706 | } | |
707 | ret = device_create_file(adev->dev, &dev_attr_power_dpm_force_performance_level); | |
708 | if (ret) { | |
709 | DRM_ERROR("failed to create device file for dpm state\n"); | |
710 | return ret; | |
711 | } | |
712 | ret = amdgpu_debugfs_pm_init(adev); | |
713 | if (ret) { | |
714 | DRM_ERROR("Failed to register debugfs file for dpm!\n"); | |
715 | return ret; | |
716 | } | |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
721 | void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev) | |
722 | { | |
723 | if (adev->pm.int_hwmon_dev) | |
724 | hwmon_device_unregister(adev->pm.int_hwmon_dev); | |
725 | device_remove_file(adev->dev, &dev_attr_power_dpm_state); | |
726 | device_remove_file(adev->dev, &dev_attr_power_dpm_force_performance_level); | |
727 | } | |
728 | ||
729 | void amdgpu_pm_compute_clocks(struct amdgpu_device *adev) | |
730 | { | |
731 | struct drm_device *ddev = adev->ddev; | |
732 | struct drm_crtc *crtc; | |
733 | struct amdgpu_crtc *amdgpu_crtc; | |
734 | ||
735 | if (!adev->pm.dpm_enabled) | |
736 | return; | |
737 | ||
738 | mutex_lock(&adev->pm.mutex); | |
739 | ||
740 | /* update active crtc counts */ | |
741 | adev->pm.dpm.new_active_crtcs = 0; | |
742 | adev->pm.dpm.new_active_crtc_count = 0; | |
743 | if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) { | |
744 | list_for_each_entry(crtc, | |
745 | &ddev->mode_config.crtc_list, head) { | |
746 | amdgpu_crtc = to_amdgpu_crtc(crtc); | |
747 | if (crtc->enabled) { | |
748 | adev->pm.dpm.new_active_crtcs |= (1 << amdgpu_crtc->crtc_id); | |
749 | adev->pm.dpm.new_active_crtc_count++; | |
750 | } | |
751 | } | |
752 | } | |
753 | ||
754 | /* update battery/ac status */ | |
755 | if (power_supply_is_system_supplied() > 0) | |
756 | adev->pm.dpm.ac_power = true; | |
757 | else | |
758 | adev->pm.dpm.ac_power = false; | |
759 | ||
760 | amdgpu_dpm_change_power_state_locked(adev); | |
761 | ||
762 | mutex_unlock(&adev->pm.mutex); | |
763 | ||
764 | } | |
765 | ||
766 | /* | |
767 | * Debugfs info | |
768 | */ | |
769 | #if defined(CONFIG_DEBUG_FS) | |
770 | ||
771 | static int amdgpu_debugfs_pm_info(struct seq_file *m, void *data) | |
772 | { | |
773 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
774 | struct drm_device *dev = node->minor->dev; | |
775 | struct amdgpu_device *adev = dev->dev_private; | |
776 | ||
777 | if (adev->pm.dpm_enabled) { | |
778 | mutex_lock(&adev->pm.mutex); | |
779 | if (adev->pm.funcs->debugfs_print_current_performance_level) | |
780 | amdgpu_dpm_debugfs_print_current_performance_level(adev, m); | |
781 | else | |
782 | seq_printf(m, "Debugfs support not implemented for this asic\n"); | |
783 | mutex_unlock(&adev->pm.mutex); | |
784 | } | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
789 | static struct drm_info_list amdgpu_pm_info_list[] = { | |
790 | {"amdgpu_pm_info", amdgpu_debugfs_pm_info, 0, NULL}, | |
791 | }; | |
792 | #endif | |
793 | ||
794 | static int amdgpu_debugfs_pm_init(struct amdgpu_device *adev) | |
795 | { | |
796 | #if defined(CONFIG_DEBUG_FS) | |
797 | return amdgpu_debugfs_add_files(adev, amdgpu_pm_info_list, ARRAY_SIZE(amdgpu_pm_info_list)); | |
798 | #else | |
799 | return 0; | |
800 | #endif | |
801 | } |