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
24 #include <linux/hwmon-sysfs.h>
25 #include <linux/hwmon.h>
26 #include <linux/pci.h>
27 #include <linux/power_supply.h>
28
29 #include <drm/drm_vblank.h>
30
31 #include "atom.h"
32 #include "avivod.h"
33 #include "r600_dpm.h"
34 #include "radeon.h"
35 #include "radeon_pm.h"
36
37 #define RADEON_IDLE_LOOP_MS 100
38 #define RADEON_RECLOCK_DELAY_MS 200
39 #define RADEON_WAIT_VBLANK_TIMEOUT 200
40
41 static const char *radeon_pm_state_type_name[5] = {
42 "",
43 "Powersave",
44 "Battery",
45 "Balanced",
46 "Performance",
47 };
48
49 static void radeon_dynpm_idle_work_handler(struct work_struct *work);
50 static void radeon_debugfs_pm_init(struct radeon_device *rdev);
51 static bool radeon_pm_in_vbl(struct radeon_device *rdev);
52 static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish);
53 static void radeon_pm_update_profile(struct radeon_device *rdev);
54 static void radeon_pm_set_clocks(struct radeon_device *rdev);
55
radeon_pm_get_type_index(struct radeon_device * rdev,enum radeon_pm_state_type ps_type,int instance)56 int radeon_pm_get_type_index(struct radeon_device *rdev,
57 enum radeon_pm_state_type ps_type,
58 int instance)
59 {
60 int i;
61 int found_instance = -1;
62
63 for (i = 0; i < rdev->pm.num_power_states; i++) {
64 if (rdev->pm.power_state[i].type == ps_type) {
65 found_instance++;
66 if (found_instance == instance)
67 return i;
68 }
69 }
70 /* return default if no match */
71 return rdev->pm.default_power_state_index;
72 }
73
radeon_pm_acpi_event_handler(struct radeon_device * rdev)74 void radeon_pm_acpi_event_handler(struct radeon_device *rdev)
75 {
76 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
77 mutex_lock(&rdev->pm.mutex);
78 if (power_supply_is_system_supplied() > 0)
79 rdev->pm.dpm.ac_power = true;
80 else
81 rdev->pm.dpm.ac_power = false;
82 if (rdev->family == CHIP_ARUBA) {
83 if (rdev->asic->dpm.enable_bapm)
84 radeon_dpm_enable_bapm(rdev, rdev->pm.dpm.ac_power);
85 }
86 mutex_unlock(&rdev->pm.mutex);
87 } else if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
88 if (rdev->pm.profile == PM_PROFILE_AUTO) {
89 mutex_lock(&rdev->pm.mutex);
90 radeon_pm_update_profile(rdev);
91 radeon_pm_set_clocks(rdev);
92 mutex_unlock(&rdev->pm.mutex);
93 }
94 }
95 }
96
radeon_pm_update_profile(struct radeon_device * rdev)97 static void radeon_pm_update_profile(struct radeon_device *rdev)
98 {
99 switch (rdev->pm.profile) {
100 case PM_PROFILE_DEFAULT:
101 rdev->pm.profile_index = PM_PROFILE_DEFAULT_IDX;
102 break;
103 case PM_PROFILE_AUTO:
104 if (power_supply_is_system_supplied() > 0) {
105 if (rdev->pm.active_crtc_count > 1)
106 rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
107 else
108 rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
109 } else {
110 if (rdev->pm.active_crtc_count > 1)
111 rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
112 else
113 rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
114 }
115 break;
116 case PM_PROFILE_LOW:
117 if (rdev->pm.active_crtc_count > 1)
118 rdev->pm.profile_index = PM_PROFILE_LOW_MH_IDX;
119 else
120 rdev->pm.profile_index = PM_PROFILE_LOW_SH_IDX;
121 break;
122 case PM_PROFILE_MID:
123 if (rdev->pm.active_crtc_count > 1)
124 rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
125 else
126 rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
127 break;
128 case PM_PROFILE_HIGH:
129 if (rdev->pm.active_crtc_count > 1)
130 rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
131 else
132 rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
133 break;
134 }
135
136 if (rdev->pm.active_crtc_count == 0) {
137 rdev->pm.requested_power_state_index =
138 rdev->pm.profiles[rdev->pm.profile_index].dpms_off_ps_idx;
139 rdev->pm.requested_clock_mode_index =
140 rdev->pm.profiles[rdev->pm.profile_index].dpms_off_cm_idx;
141 } else {
142 rdev->pm.requested_power_state_index =
143 rdev->pm.profiles[rdev->pm.profile_index].dpms_on_ps_idx;
144 rdev->pm.requested_clock_mode_index =
145 rdev->pm.profiles[rdev->pm.profile_index].dpms_on_cm_idx;
146 }
147 }
148
radeon_unmap_vram_bos(struct radeon_device * rdev)149 static void radeon_unmap_vram_bos(struct radeon_device *rdev)
150 {
151 struct radeon_bo *bo, *n;
152
153 if (list_empty(&rdev->gem.objects))
154 return;
155
156 list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
157 if (bo->tbo.resource->mem_type == TTM_PL_VRAM)
158 ttm_bo_unmap_virtual(&bo->tbo);
159 }
160 }
161
radeon_sync_with_vblank(struct radeon_device * rdev)162 static void radeon_sync_with_vblank(struct radeon_device *rdev)
163 {
164 if (rdev->pm.active_crtcs) {
165 rdev->pm.vblank_sync = false;
166 wait_event_timeout(
167 rdev->irq.vblank_queue, rdev->pm.vblank_sync,
168 msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
169 }
170 }
171
radeon_set_power_state(struct radeon_device * rdev)172 static void radeon_set_power_state(struct radeon_device *rdev)
173 {
174 u32 sclk, mclk;
175 bool misc_after = false;
176
177 if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
178 (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
179 return;
180
181 if (radeon_gui_idle(rdev)) {
182 sclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
183 clock_info[rdev->pm.requested_clock_mode_index].sclk;
184 if (sclk > rdev->pm.default_sclk)
185 sclk = rdev->pm.default_sclk;
186
187 /* starting with BTC, there is one state that is used for both
188 * MH and SH. Difference is that we always use the high clock index for
189 * mclk and vddci.
190 */
191 if ((rdev->pm.pm_method == PM_METHOD_PROFILE) &&
192 (rdev->family >= CHIP_BARTS) &&
193 rdev->pm.active_crtc_count &&
194 ((rdev->pm.profile_index == PM_PROFILE_MID_MH_IDX) ||
195 (rdev->pm.profile_index == PM_PROFILE_LOW_MH_IDX)))
196 mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
197 clock_info[rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx].mclk;
198 else
199 mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
200 clock_info[rdev->pm.requested_clock_mode_index].mclk;
201
202 if (mclk > rdev->pm.default_mclk)
203 mclk = rdev->pm.default_mclk;
204
205 /* upvolt before raising clocks, downvolt after lowering clocks */
206 if (sclk < rdev->pm.current_sclk)
207 misc_after = true;
208
209 radeon_sync_with_vblank(rdev);
210
211 if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
212 if (!radeon_pm_in_vbl(rdev))
213 return;
214 }
215
216 radeon_pm_prepare(rdev);
217
218 if (!misc_after)
219 /* voltage, pcie lanes, etc.*/
220 radeon_pm_misc(rdev);
221
222 /* set engine clock */
223 if (sclk != rdev->pm.current_sclk) {
224 radeon_pm_debug_check_in_vbl(rdev, false);
225 radeon_set_engine_clock(rdev, sclk);
226 radeon_pm_debug_check_in_vbl(rdev, true);
227 rdev->pm.current_sclk = sclk;
228 DRM_DEBUG_DRIVER("Setting: e: %d\n", sclk);
229 }
230
231 /* set memory clock */
232 if (rdev->asic->pm.set_memory_clock && (mclk != rdev->pm.current_mclk)) {
233 radeon_pm_debug_check_in_vbl(rdev, false);
234 radeon_set_memory_clock(rdev, mclk);
235 radeon_pm_debug_check_in_vbl(rdev, true);
236 rdev->pm.current_mclk = mclk;
237 DRM_DEBUG_DRIVER("Setting: m: %d\n", mclk);
238 }
239
240 if (misc_after)
241 /* voltage, pcie lanes, etc.*/
242 radeon_pm_misc(rdev);
243
244 radeon_pm_finish(rdev);
245
246 rdev->pm.current_power_state_index = rdev->pm.requested_power_state_index;
247 rdev->pm.current_clock_mode_index = rdev->pm.requested_clock_mode_index;
248 } else
249 DRM_DEBUG_DRIVER("pm: GUI not idle!!!\n");
250 }
251
radeon_pm_set_clocks(struct radeon_device * rdev)252 static void radeon_pm_set_clocks(struct radeon_device *rdev)
253 {
254 struct drm_crtc *crtc;
255 int i, r;
256
257 /* no need to take locks, etc. if nothing's going to change */
258 if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
259 (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
260 return;
261
262 down_write(&rdev->pm.mclk_lock);
263 mutex_lock(&rdev->ring_lock);
264
265 /* wait for the rings to drain */
266 for (i = 0; i < RADEON_NUM_RINGS; i++) {
267 struct radeon_ring *ring = &rdev->ring[i];
268 if (!ring->ready) {
269 continue;
270 }
271 r = radeon_fence_wait_empty(rdev, i);
272 if (r) {
273 /* needs a GPU reset dont reset here */
274 mutex_unlock(&rdev->ring_lock);
275 up_write(&rdev->pm.mclk_lock);
276 return;
277 }
278 }
279
280 radeon_unmap_vram_bos(rdev);
281
282 if (rdev->irq.installed) {
283 i = 0;
284 drm_for_each_crtc(crtc, rdev->ddev) {
285 if (rdev->pm.active_crtcs & (1 << i)) {
286 /* This can fail if a modeset is in progress */
287 if (drm_crtc_vblank_get(crtc) == 0)
288 rdev->pm.req_vblank |= (1 << i);
289 else
290 DRM_DEBUG_DRIVER("crtc %d no vblank, can glitch\n",
291 i);
292 }
293 i++;
294 }
295 }
296
297 radeon_set_power_state(rdev);
298
299 if (rdev->irq.installed) {
300 i = 0;
301 drm_for_each_crtc(crtc, rdev->ddev) {
302 if (rdev->pm.req_vblank & (1 << i)) {
303 rdev->pm.req_vblank &= ~(1 << i);
304 drm_crtc_vblank_put(crtc);
305 }
306 i++;
307 }
308 }
309
310 /* update display watermarks based on new power state */
311 radeon_update_bandwidth_info(rdev);
312 if (rdev->pm.active_crtc_count)
313 radeon_bandwidth_update(rdev);
314
315 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
316
317 mutex_unlock(&rdev->ring_lock);
318 up_write(&rdev->pm.mclk_lock);
319 }
320
radeon_pm_print_states(struct radeon_device * rdev)321 static void radeon_pm_print_states(struct radeon_device *rdev)
322 {
323 int i, j;
324 struct radeon_power_state *power_state;
325 struct radeon_pm_clock_info *clock_info;
326
327 DRM_DEBUG_DRIVER("%d Power State(s)\n", rdev->pm.num_power_states);
328 for (i = 0; i < rdev->pm.num_power_states; i++) {
329 power_state = &rdev->pm.power_state[i];
330 DRM_DEBUG_DRIVER("State %d: %s\n", i,
331 radeon_pm_state_type_name[power_state->type]);
332 if (i == rdev->pm.default_power_state_index)
333 DRM_DEBUG_DRIVER("\tDefault");
334 if ((rdev->flags & RADEON_IS_PCIE) && !(rdev->flags & RADEON_IS_IGP))
335 DRM_DEBUG_DRIVER("\t%d PCIE Lanes\n", power_state->pcie_lanes);
336 if (power_state->flags & RADEON_PM_STATE_SINGLE_DISPLAY_ONLY)
337 DRM_DEBUG_DRIVER("\tSingle display only\n");
338 DRM_DEBUG_DRIVER("\t%d Clock Mode(s)\n", power_state->num_clock_modes);
339 for (j = 0; j < power_state->num_clock_modes; j++) {
340 clock_info = &(power_state->clock_info[j]);
341 if (rdev->flags & RADEON_IS_IGP)
342 DRM_DEBUG_DRIVER("\t\t%d e: %d\n",
343 j,
344 clock_info->sclk * 10);
345 else
346 DRM_DEBUG_DRIVER("\t\t%d e: %d\tm: %d\tv: %d\n",
347 j,
348 clock_info->sclk * 10,
349 clock_info->mclk * 10,
350 clock_info->voltage.voltage);
351 }
352 }
353 }
354
radeon_get_pm_profile(struct device * dev,struct device_attribute * attr,char * buf)355 static ssize_t radeon_get_pm_profile(struct device *dev,
356 struct device_attribute *attr,
357 char *buf)
358 {
359 struct drm_device *ddev = dev_get_drvdata(dev);
360 struct radeon_device *rdev = ddev->dev_private;
361 int cp = rdev->pm.profile;
362
363 return sysfs_emit(buf, "%s\n", (cp == PM_PROFILE_AUTO) ? "auto" :
364 (cp == PM_PROFILE_LOW) ? "low" :
365 (cp == PM_PROFILE_MID) ? "mid" :
366 (cp == PM_PROFILE_HIGH) ? "high" : "default");
367 }
368
radeon_set_pm_profile(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)369 static ssize_t radeon_set_pm_profile(struct device *dev,
370 struct device_attribute *attr,
371 const char *buf,
372 size_t count)
373 {
374 struct drm_device *ddev = dev_get_drvdata(dev);
375 struct radeon_device *rdev = ddev->dev_private;
376
377 /* Can't set profile when the card is off */
378 if ((rdev->flags & RADEON_IS_PX) &&
379 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
380 return -EINVAL;
381
382 mutex_lock(&rdev->pm.mutex);
383 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
384 if (strncmp("default", buf, strlen("default")) == 0)
385 rdev->pm.profile = PM_PROFILE_DEFAULT;
386 else if (strncmp("auto", buf, strlen("auto")) == 0)
387 rdev->pm.profile = PM_PROFILE_AUTO;
388 else if (strncmp("low", buf, strlen("low")) == 0)
389 rdev->pm.profile = PM_PROFILE_LOW;
390 else if (strncmp("mid", buf, strlen("mid")) == 0)
391 rdev->pm.profile = PM_PROFILE_MID;
392 else if (strncmp("high", buf, strlen("high")) == 0)
393 rdev->pm.profile = PM_PROFILE_HIGH;
394 else {
395 count = -EINVAL;
396 goto fail;
397 }
398 radeon_pm_update_profile(rdev);
399 radeon_pm_set_clocks(rdev);
400 } else
401 count = -EINVAL;
402
403 fail:
404 mutex_unlock(&rdev->pm.mutex);
405
406 return count;
407 }
408
radeon_get_pm_method(struct device * dev,struct device_attribute * attr,char * buf)409 static ssize_t radeon_get_pm_method(struct device *dev,
410 struct device_attribute *attr,
411 char *buf)
412 {
413 struct drm_device *ddev = dev_get_drvdata(dev);
414 struct radeon_device *rdev = ddev->dev_private;
415 int pm = rdev->pm.pm_method;
416
417 return sysfs_emit(buf, "%s\n", (pm == PM_METHOD_DYNPM) ? "dynpm" :
418 (pm == PM_METHOD_PROFILE) ? "profile" : "dpm");
419 }
420
radeon_set_pm_method(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)421 static ssize_t radeon_set_pm_method(struct device *dev,
422 struct device_attribute *attr,
423 const char *buf,
424 size_t count)
425 {
426 struct drm_device *ddev = dev_get_drvdata(dev);
427 struct radeon_device *rdev = ddev->dev_private;
428
429 /* Can't set method when the card is off */
430 if ((rdev->flags & RADEON_IS_PX) &&
431 (ddev->switch_power_state != DRM_SWITCH_POWER_ON)) {
432 count = -EINVAL;
433 goto fail;
434 }
435
436 /* we don't support the legacy modes with dpm */
437 if (rdev->pm.pm_method == PM_METHOD_DPM) {
438 count = -EINVAL;
439 goto fail;
440 }
441
442 if (strncmp("dynpm", buf, strlen("dynpm")) == 0) {
443 mutex_lock(&rdev->pm.mutex);
444 rdev->pm.pm_method = PM_METHOD_DYNPM;
445 rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
446 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
447 mutex_unlock(&rdev->pm.mutex);
448 } else if (strncmp("profile", buf, strlen("profile")) == 0) {
449 mutex_lock(&rdev->pm.mutex);
450 /* disable dynpm */
451 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
452 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
453 rdev->pm.pm_method = PM_METHOD_PROFILE;
454 mutex_unlock(&rdev->pm.mutex);
455 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
456 } else {
457 count = -EINVAL;
458 goto fail;
459 }
460 radeon_pm_compute_clocks(rdev);
461 fail:
462 return count;
463 }
464
radeon_get_dpm_state(struct device * dev,struct device_attribute * attr,char * buf)465 static ssize_t radeon_get_dpm_state(struct device *dev,
466 struct device_attribute *attr,
467 char *buf)
468 {
469 struct drm_device *ddev = dev_get_drvdata(dev);
470 struct radeon_device *rdev = ddev->dev_private;
471 enum radeon_pm_state_type pm = rdev->pm.dpm.user_state;
472
473 return sysfs_emit(buf, "%s\n",
474 (pm == POWER_STATE_TYPE_BATTERY) ? "battery" :
475 (pm == POWER_STATE_TYPE_BALANCED) ? "balanced" : "performance");
476 }
477
radeon_set_dpm_state(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)478 static ssize_t radeon_set_dpm_state(struct device *dev,
479 struct device_attribute *attr,
480 const char *buf,
481 size_t count)
482 {
483 struct drm_device *ddev = dev_get_drvdata(dev);
484 struct radeon_device *rdev = ddev->dev_private;
485
486 mutex_lock(&rdev->pm.mutex);
487 if (strncmp("battery", buf, strlen("battery")) == 0)
488 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BATTERY;
489 else if (strncmp("balanced", buf, strlen("balanced")) == 0)
490 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
491 else if (strncmp("performance", buf, strlen("performance")) == 0)
492 rdev->pm.dpm.user_state = POWER_STATE_TYPE_PERFORMANCE;
493 else {
494 mutex_unlock(&rdev->pm.mutex);
495 count = -EINVAL;
496 goto fail;
497 }
498 mutex_unlock(&rdev->pm.mutex);
499
500 /* Can't set dpm state when the card is off */
501 if (!(rdev->flags & RADEON_IS_PX) ||
502 (ddev->switch_power_state == DRM_SWITCH_POWER_ON))
503 radeon_pm_compute_clocks(rdev);
504
505 fail:
506 return count;
507 }
508
radeon_get_dpm_forced_performance_level(struct device * dev,struct device_attribute * attr,char * buf)509 static ssize_t radeon_get_dpm_forced_performance_level(struct device *dev,
510 struct device_attribute *attr,
511 char *buf)
512 {
513 struct drm_device *ddev = dev_get_drvdata(dev);
514 struct radeon_device *rdev = ddev->dev_private;
515 enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level;
516
517 if ((rdev->flags & RADEON_IS_PX) &&
518 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
519 return sysfs_emit(buf, "off\n");
520
521 return sysfs_emit(buf, "%s\n",
522 (level == RADEON_DPM_FORCED_LEVEL_AUTO) ? "auto" :
523 (level == RADEON_DPM_FORCED_LEVEL_LOW) ? "low" : "high");
524 }
525
radeon_set_dpm_forced_performance_level(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)526 static ssize_t radeon_set_dpm_forced_performance_level(struct device *dev,
527 struct device_attribute *attr,
528 const char *buf,
529 size_t count)
530 {
531 struct drm_device *ddev = dev_get_drvdata(dev);
532 struct radeon_device *rdev = ddev->dev_private;
533 enum radeon_dpm_forced_level level;
534 int ret = 0;
535
536 /* Can't force performance level when the card is off */
537 if ((rdev->flags & RADEON_IS_PX) &&
538 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
539 return -EINVAL;
540
541 mutex_lock(&rdev->pm.mutex);
542 if (strncmp("low", buf, strlen("low")) == 0) {
543 level = RADEON_DPM_FORCED_LEVEL_LOW;
544 } else if (strncmp("high", buf, strlen("high")) == 0) {
545 level = RADEON_DPM_FORCED_LEVEL_HIGH;
546 } else if (strncmp("auto", buf, strlen("auto")) == 0) {
547 level = RADEON_DPM_FORCED_LEVEL_AUTO;
548 } else {
549 count = -EINVAL;
550 goto fail;
551 }
552 if (rdev->asic->dpm.force_performance_level) {
553 if (rdev->pm.dpm.thermal_active) {
554 count = -EINVAL;
555 goto fail;
556 }
557 ret = radeon_dpm_force_performance_level(rdev, level);
558 if (ret)
559 count = -EINVAL;
560 }
561 fail:
562 mutex_unlock(&rdev->pm.mutex);
563
564 return count;
565 }
566
radeon_hwmon_get_pwm1_enable(struct device * dev,struct device_attribute * attr,char * buf)567 static ssize_t radeon_hwmon_get_pwm1_enable(struct device *dev,
568 struct device_attribute *attr,
569 char *buf)
570 {
571 struct radeon_device *rdev = dev_get_drvdata(dev);
572 u32 pwm_mode = 0;
573
574 if (rdev->asic->dpm.fan_ctrl_get_mode)
575 pwm_mode = rdev->asic->dpm.fan_ctrl_get_mode(rdev);
576
577 /* never 0 (full-speed), fuse or smc-controlled always */
578 return sprintf(buf, "%i\n", pwm_mode == FDO_PWM_MODE_STATIC ? 1 : 2);
579 }
580
radeon_hwmon_set_pwm1_enable(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)581 static ssize_t radeon_hwmon_set_pwm1_enable(struct device *dev,
582 struct device_attribute *attr,
583 const char *buf,
584 size_t count)
585 {
586 struct radeon_device *rdev = dev_get_drvdata(dev);
587 int err;
588 int value;
589
590 if(!rdev->asic->dpm.fan_ctrl_set_mode)
591 return -EINVAL;
592
593 err = kstrtoint(buf, 10, &value);
594 if (err)
595 return err;
596
597 switch (value) {
598 case 1: /* manual, percent-based */
599 rdev->asic->dpm.fan_ctrl_set_mode(rdev, FDO_PWM_MODE_STATIC);
600 break;
601 default: /* disable */
602 rdev->asic->dpm.fan_ctrl_set_mode(rdev, 0);
603 break;
604 }
605
606 return count;
607 }
608
radeon_hwmon_get_pwm1_min(struct device * dev,struct device_attribute * attr,char * buf)609 static ssize_t radeon_hwmon_get_pwm1_min(struct device *dev,
610 struct device_attribute *attr,
611 char *buf)
612 {
613 return sprintf(buf, "%i\n", 0);
614 }
615
radeon_hwmon_get_pwm1_max(struct device * dev,struct device_attribute * attr,char * buf)616 static ssize_t radeon_hwmon_get_pwm1_max(struct device *dev,
617 struct device_attribute *attr,
618 char *buf)
619 {
620 return sprintf(buf, "%i\n", 255);
621 }
622
radeon_hwmon_set_pwm1(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)623 static ssize_t radeon_hwmon_set_pwm1(struct device *dev,
624 struct device_attribute *attr,
625 const char *buf, size_t count)
626 {
627 struct radeon_device *rdev = dev_get_drvdata(dev);
628 int err;
629 u32 value;
630
631 err = kstrtou32(buf, 10, &value);
632 if (err)
633 return err;
634
635 value = (value * 100) / 255;
636
637 err = rdev->asic->dpm.set_fan_speed_percent(rdev, value);
638 if (err)
639 return err;
640
641 return count;
642 }
643
radeon_hwmon_get_pwm1(struct device * dev,struct device_attribute * attr,char * buf)644 static ssize_t radeon_hwmon_get_pwm1(struct device *dev,
645 struct device_attribute *attr,
646 char *buf)
647 {
648 struct radeon_device *rdev = dev_get_drvdata(dev);
649 int err;
650 u32 speed;
651
652 err = rdev->asic->dpm.get_fan_speed_percent(rdev, &speed);
653 if (err)
654 return err;
655
656 speed = (speed * 255) / 100;
657
658 return sprintf(buf, "%i\n", speed);
659 }
660
661 static DEVICE_ATTR(power_profile, S_IRUGO | S_IWUSR, radeon_get_pm_profile, radeon_set_pm_profile);
662 static DEVICE_ATTR(power_method, S_IRUGO | S_IWUSR, radeon_get_pm_method, radeon_set_pm_method);
663 static DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, radeon_get_dpm_state, radeon_set_dpm_state);
664 static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR,
665 radeon_get_dpm_forced_performance_level,
666 radeon_set_dpm_forced_performance_level);
667
radeon_hwmon_show_temp(struct device * dev,struct device_attribute * attr,char * buf)668 static ssize_t radeon_hwmon_show_temp(struct device *dev,
669 struct device_attribute *attr,
670 char *buf)
671 {
672 struct radeon_device *rdev = dev_get_drvdata(dev);
673 struct drm_device *ddev = rdev->ddev;
674 int temp;
675
676 /* Can't get temperature when the card is off */
677 if ((rdev->flags & RADEON_IS_PX) &&
678 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
679 return -EINVAL;
680
681 if (rdev->asic->pm.get_temperature)
682 temp = radeon_get_temperature(rdev);
683 else
684 temp = 0;
685
686 return sysfs_emit(buf, "%d\n", temp);
687 }
688
radeon_hwmon_show_temp_thresh(struct device * dev,struct device_attribute * attr,char * buf)689 static ssize_t radeon_hwmon_show_temp_thresh(struct device *dev,
690 struct device_attribute *attr,
691 char *buf)
692 {
693 struct radeon_device *rdev = dev_get_drvdata(dev);
694 int hyst = to_sensor_dev_attr(attr)->index;
695 int temp;
696
697 if (hyst)
698 temp = rdev->pm.dpm.thermal.min_temp;
699 else
700 temp = rdev->pm.dpm.thermal.max_temp;
701
702 return sysfs_emit(buf, "%d\n", temp);
703 }
704
705 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, radeon_hwmon_show_temp, NULL, 0);
706 static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, radeon_hwmon_show_temp_thresh, NULL, 0);
707 static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, radeon_hwmon_show_temp_thresh, NULL, 1);
708 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, radeon_hwmon_get_pwm1, radeon_hwmon_set_pwm1, 0);
709 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, radeon_hwmon_get_pwm1_enable, radeon_hwmon_set_pwm1_enable, 0);
710 static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, radeon_hwmon_get_pwm1_min, NULL, 0);
711 static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO, radeon_hwmon_get_pwm1_max, NULL, 0);
712
radeon_hwmon_show_sclk(struct device * dev,struct device_attribute * attr,char * buf)713 static ssize_t radeon_hwmon_show_sclk(struct device *dev,
714 struct device_attribute *attr, char *buf)
715 {
716 struct radeon_device *rdev = dev_get_drvdata(dev);
717 struct drm_device *ddev = rdev->ddev;
718 u32 sclk = 0;
719
720 /* Can't get clock frequency when the card is off */
721 if ((rdev->flags & RADEON_IS_PX) &&
722 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
723 return -EINVAL;
724
725 if (rdev->asic->dpm.get_current_sclk)
726 sclk = radeon_dpm_get_current_sclk(rdev);
727
728 /* Value returned by dpm is in 10 KHz units, need to convert it into Hz
729 for hwmon */
730 sclk *= 10000;
731
732 return sysfs_emit(buf, "%u\n", sclk);
733 }
734
735 static SENSOR_DEVICE_ATTR(freq1_input, S_IRUGO, radeon_hwmon_show_sclk, NULL,
736 0);
737
radeon_hwmon_show_vddc(struct device * dev,struct device_attribute * attr,char * buf)738 static ssize_t radeon_hwmon_show_vddc(struct device *dev,
739 struct device_attribute *attr, char *buf)
740 {
741 struct radeon_device *rdev = dev_get_drvdata(dev);
742 struct drm_device *ddev = rdev->ddev;
743 u16 vddc = 0;
744
745 /* Can't get vddc when the card is off */
746 if ((rdev->flags & RADEON_IS_PX) &&
747 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
748 return -EINVAL;
749
750 if (rdev->asic->dpm.get_current_vddc)
751 vddc = rdev->asic->dpm.get_current_vddc(rdev);
752
753 return sysfs_emit(buf, "%u\n", vddc);
754 }
755
756 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, radeon_hwmon_show_vddc, NULL,
757 0);
758
759 static struct attribute *hwmon_attributes[] = {
760 &sensor_dev_attr_temp1_input.dev_attr.attr,
761 &sensor_dev_attr_temp1_crit.dev_attr.attr,
762 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
763 &sensor_dev_attr_pwm1.dev_attr.attr,
764 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
765 &sensor_dev_attr_pwm1_min.dev_attr.attr,
766 &sensor_dev_attr_pwm1_max.dev_attr.attr,
767 &sensor_dev_attr_freq1_input.dev_attr.attr,
768 &sensor_dev_attr_in0_input.dev_attr.attr,
769 NULL
770 };
771
hwmon_attributes_visible(struct kobject * kobj,struct attribute * attr,int index)772 static umode_t hwmon_attributes_visible(struct kobject *kobj,
773 struct attribute *attr, int index)
774 {
775 struct device *dev = kobj_to_dev(kobj);
776 struct radeon_device *rdev = dev_get_drvdata(dev);
777 umode_t effective_mode = attr->mode;
778
779 /* Skip attributes if DPM is not enabled */
780 if (rdev->pm.pm_method != PM_METHOD_DPM &&
781 (attr == &sensor_dev_attr_temp1_crit.dev_attr.attr ||
782 attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr ||
783 attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
784 attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
785 attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
786 attr == &sensor_dev_attr_pwm1_min.dev_attr.attr ||
787 attr == &sensor_dev_attr_freq1_input.dev_attr.attr ||
788 attr == &sensor_dev_attr_in0_input.dev_attr.attr))
789 return 0;
790
791 /* Skip vddc attribute if get_current_vddc is not implemented */
792 if(attr == &sensor_dev_attr_in0_input.dev_attr.attr &&
793 !rdev->asic->dpm.get_current_vddc)
794 return 0;
795
796 /* Skip fan attributes if fan is not present */
797 if (rdev->pm.no_fan &&
798 (attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
799 attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
800 attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
801 attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
802 return 0;
803
804 /* mask fan attributes if we have no bindings for this asic to expose */
805 if ((!rdev->asic->dpm.get_fan_speed_percent &&
806 attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't query fan */
807 (!rdev->asic->dpm.fan_ctrl_get_mode &&
808 attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't query state */
809 effective_mode &= ~S_IRUGO;
810
811 if ((!rdev->asic->dpm.set_fan_speed_percent &&
812 attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't manage fan */
813 (!rdev->asic->dpm.fan_ctrl_set_mode &&
814 attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't manage state */
815 effective_mode &= ~S_IWUSR;
816
817 /* hide max/min values if we can't both query and manage the fan */
818 if ((!rdev->asic->dpm.set_fan_speed_percent &&
819 !rdev->asic->dpm.get_fan_speed_percent) &&
820 (attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
821 attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
822 return 0;
823
824 return effective_mode;
825 }
826
827 static const struct attribute_group hwmon_attrgroup = {
828 .attrs = hwmon_attributes,
829 .is_visible = hwmon_attributes_visible,
830 };
831
832 static const struct attribute_group *hwmon_groups[] = {
833 &hwmon_attrgroup,
834 NULL
835 };
836
radeon_hwmon_init(struct radeon_device * rdev)837 static int radeon_hwmon_init(struct radeon_device *rdev)
838 {
839 int err = 0;
840
841 switch (rdev->pm.int_thermal_type) {
842 case THERMAL_TYPE_RV6XX:
843 case THERMAL_TYPE_RV770:
844 case THERMAL_TYPE_EVERGREEN:
845 case THERMAL_TYPE_NI:
846 case THERMAL_TYPE_SUMO:
847 case THERMAL_TYPE_SI:
848 case THERMAL_TYPE_CI:
849 case THERMAL_TYPE_KV:
850 if (rdev->asic->pm.get_temperature == NULL)
851 return err;
852 rdev->pm.int_hwmon_dev = hwmon_device_register_with_groups(rdev->dev,
853 "radeon", rdev,
854 hwmon_groups);
855 if (IS_ERR(rdev->pm.int_hwmon_dev)) {
856 err = PTR_ERR(rdev->pm.int_hwmon_dev);
857 dev_err(rdev->dev,
858 "Unable to register hwmon device: %d\n", err);
859 }
860 break;
861 default:
862 break;
863 }
864
865 return err;
866 }
867
radeon_hwmon_fini(struct radeon_device * rdev)868 static void radeon_hwmon_fini(struct radeon_device *rdev)
869 {
870 if (rdev->pm.int_hwmon_dev)
871 hwmon_device_unregister(rdev->pm.int_hwmon_dev);
872 }
873
radeon_dpm_thermal_work_handler(struct work_struct * work)874 static void radeon_dpm_thermal_work_handler(struct work_struct *work)
875 {
876 struct radeon_device *rdev =
877 container_of(work, struct radeon_device,
878 pm.dpm.thermal.work);
879 /* switch to the thermal state */
880 enum radeon_pm_state_type dpm_state = POWER_STATE_TYPE_INTERNAL_THERMAL;
881
882 if (!rdev->pm.dpm_enabled)
883 return;
884
885 if (rdev->asic->pm.get_temperature) {
886 int temp = radeon_get_temperature(rdev);
887
888 if (temp < rdev->pm.dpm.thermal.min_temp)
889 /* switch back the user state */
890 dpm_state = rdev->pm.dpm.user_state;
891 } else {
892 if (rdev->pm.dpm.thermal.high_to_low)
893 /* switch back the user state */
894 dpm_state = rdev->pm.dpm.user_state;
895 }
896 mutex_lock(&rdev->pm.mutex);
897 if (dpm_state == POWER_STATE_TYPE_INTERNAL_THERMAL)
898 rdev->pm.dpm.thermal_active = true;
899 else
900 rdev->pm.dpm.thermal_active = false;
901 rdev->pm.dpm.state = dpm_state;
902 mutex_unlock(&rdev->pm.mutex);
903
904 radeon_pm_compute_clocks(rdev);
905 }
906
radeon_dpm_single_display(struct radeon_device * rdev)907 static bool radeon_dpm_single_display(struct radeon_device *rdev)
908 {
909 bool single_display = (rdev->pm.dpm.new_active_crtc_count < 2) ?
910 true : false;
911
912 /* check if the vblank period is too short to adjust the mclk */
913 if (single_display && rdev->asic->dpm.vblank_too_short) {
914 if (radeon_dpm_vblank_too_short(rdev))
915 single_display = false;
916 }
917
918 /* 120hz tends to be problematic even if they are under the
919 * vblank limit.
920 */
921 if (single_display && (r600_dpm_get_vrefresh(rdev) >= 120))
922 single_display = false;
923
924 return single_display;
925 }
926
radeon_dpm_pick_power_state(struct radeon_device * rdev,enum radeon_pm_state_type dpm_state)927 static struct radeon_ps *radeon_dpm_pick_power_state(struct radeon_device *rdev,
928 enum radeon_pm_state_type dpm_state)
929 {
930 int i;
931 struct radeon_ps *ps;
932 u32 ui_class;
933 bool single_display = radeon_dpm_single_display(rdev);
934
935 /* certain older asics have a separare 3D performance state,
936 * so try that first if the user selected performance
937 */
938 if (dpm_state == POWER_STATE_TYPE_PERFORMANCE)
939 dpm_state = POWER_STATE_TYPE_INTERNAL_3DPERF;
940 /* balanced states don't exist at the moment */
941 if (dpm_state == POWER_STATE_TYPE_BALANCED)
942 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
943
944 restart_search:
945 /* Pick the best power state based on current conditions */
946 for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
947 ps = &rdev->pm.dpm.ps[i];
948 ui_class = ps->class & ATOM_PPLIB_CLASSIFICATION_UI_MASK;
949 switch (dpm_state) {
950 /* user states */
951 case POWER_STATE_TYPE_BATTERY:
952 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BATTERY) {
953 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
954 if (single_display)
955 return ps;
956 } else
957 return ps;
958 }
959 break;
960 case POWER_STATE_TYPE_BALANCED:
961 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BALANCED) {
962 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
963 if (single_display)
964 return ps;
965 } else
966 return ps;
967 }
968 break;
969 case POWER_STATE_TYPE_PERFORMANCE:
970 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE) {
971 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
972 if (single_display)
973 return ps;
974 } else
975 return ps;
976 }
977 break;
978 /* internal states */
979 case POWER_STATE_TYPE_INTERNAL_UVD:
980 if (rdev->pm.dpm.uvd_ps)
981 return rdev->pm.dpm.uvd_ps;
982 else
983 break;
984 case POWER_STATE_TYPE_INTERNAL_UVD_SD:
985 if (ps->class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
986 return ps;
987 break;
988 case POWER_STATE_TYPE_INTERNAL_UVD_HD:
989 if (ps->class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
990 return ps;
991 break;
992 case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
993 if (ps->class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
994 return ps;
995 break;
996 case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
997 if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
998 return ps;
999 break;
1000 case POWER_STATE_TYPE_INTERNAL_BOOT:
1001 return rdev->pm.dpm.boot_ps;
1002 case POWER_STATE_TYPE_INTERNAL_THERMAL:
1003 if (ps->class & ATOM_PPLIB_CLASSIFICATION_THERMAL)
1004 return ps;
1005 break;
1006 case POWER_STATE_TYPE_INTERNAL_ACPI:
1007 if (ps->class & ATOM_PPLIB_CLASSIFICATION_ACPI)
1008 return ps;
1009 break;
1010 case POWER_STATE_TYPE_INTERNAL_ULV:
1011 if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_ULV)
1012 return ps;
1013 break;
1014 case POWER_STATE_TYPE_INTERNAL_3DPERF:
1015 if (ps->class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE)
1016 return ps;
1017 break;
1018 default:
1019 break;
1020 }
1021 }
1022 /* use a fallback state if we didn't match */
1023 switch (dpm_state) {
1024 case POWER_STATE_TYPE_INTERNAL_UVD_SD:
1025 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
1026 goto restart_search;
1027 case POWER_STATE_TYPE_INTERNAL_UVD_HD:
1028 case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
1029 case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
1030 if (rdev->pm.dpm.uvd_ps) {
1031 return rdev->pm.dpm.uvd_ps;
1032 } else {
1033 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
1034 goto restart_search;
1035 }
1036 case POWER_STATE_TYPE_INTERNAL_THERMAL:
1037 dpm_state = POWER_STATE_TYPE_INTERNAL_ACPI;
1038 goto restart_search;
1039 case POWER_STATE_TYPE_INTERNAL_ACPI:
1040 dpm_state = POWER_STATE_TYPE_BATTERY;
1041 goto restart_search;
1042 case POWER_STATE_TYPE_BATTERY:
1043 case POWER_STATE_TYPE_BALANCED:
1044 case POWER_STATE_TYPE_INTERNAL_3DPERF:
1045 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
1046 goto restart_search;
1047 default:
1048 break;
1049 }
1050
1051 return NULL;
1052 }
1053
radeon_dpm_change_power_state_locked(struct radeon_device * rdev)1054 static void radeon_dpm_change_power_state_locked(struct radeon_device *rdev)
1055 {
1056 int i;
1057 struct radeon_ps *ps;
1058 enum radeon_pm_state_type dpm_state;
1059 int ret;
1060 bool single_display = radeon_dpm_single_display(rdev);
1061
1062 /* if dpm init failed */
1063 if (!rdev->pm.dpm_enabled)
1064 return;
1065
1066 if (rdev->pm.dpm.user_state != rdev->pm.dpm.state) {
1067 /* add other state override checks here */
1068 if ((!rdev->pm.dpm.thermal_active) &&
1069 (!rdev->pm.dpm.uvd_active))
1070 rdev->pm.dpm.state = rdev->pm.dpm.user_state;
1071 }
1072 dpm_state = rdev->pm.dpm.state;
1073
1074 ps = radeon_dpm_pick_power_state(rdev, dpm_state);
1075 if (ps)
1076 rdev->pm.dpm.requested_ps = ps;
1077 else
1078 return;
1079
1080 /* no need to reprogram if nothing changed unless we are on BTC+ */
1081 if (rdev->pm.dpm.current_ps == rdev->pm.dpm.requested_ps) {
1082 /* vce just modifies an existing state so force a change */
1083 if (ps->vce_active != rdev->pm.dpm.vce_active)
1084 goto force;
1085 /* user has made a display change (such as timing) */
1086 if (rdev->pm.dpm.single_display != single_display)
1087 goto force;
1088 if ((rdev->family < CHIP_BARTS) || (rdev->flags & RADEON_IS_IGP)) {
1089 /* for pre-BTC and APUs if the num crtcs changed but state is the same,
1090 * all we need to do is update the display configuration.
1091 */
1092 if (rdev->pm.dpm.new_active_crtcs != rdev->pm.dpm.current_active_crtcs) {
1093 /* update display watermarks based on new power state */
1094 radeon_bandwidth_update(rdev);
1095 /* update displays */
1096 radeon_dpm_display_configuration_changed(rdev);
1097 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1098 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1099 }
1100 return;
1101 } else {
1102 /* for BTC+ if the num crtcs hasn't changed and state is the same,
1103 * nothing to do, if the num crtcs is > 1 and state is the same,
1104 * update display configuration.
1105 */
1106 if (rdev->pm.dpm.new_active_crtcs ==
1107 rdev->pm.dpm.current_active_crtcs) {
1108 return;
1109 } else {
1110 if ((rdev->pm.dpm.current_active_crtc_count > 1) &&
1111 (rdev->pm.dpm.new_active_crtc_count > 1)) {
1112 /* update display watermarks based on new power state */
1113 radeon_bandwidth_update(rdev);
1114 /* update displays */
1115 radeon_dpm_display_configuration_changed(rdev);
1116 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1117 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1118 return;
1119 }
1120 }
1121 }
1122 }
1123
1124 force:
1125 if (radeon_dpm == 1) {
1126 printk("switching from power state:\n");
1127 radeon_dpm_print_power_state(rdev, rdev->pm.dpm.current_ps);
1128 printk("switching to power state:\n");
1129 radeon_dpm_print_power_state(rdev, rdev->pm.dpm.requested_ps);
1130 }
1131
1132 down_write(&rdev->pm.mclk_lock);
1133 mutex_lock(&rdev->ring_lock);
1134
1135 /* update whether vce is active */
1136 ps->vce_active = rdev->pm.dpm.vce_active;
1137
1138 ret = radeon_dpm_pre_set_power_state(rdev);
1139 if (ret)
1140 goto done;
1141
1142 /* update display watermarks based on new power state */
1143 radeon_bandwidth_update(rdev);
1144 /* update displays */
1145 radeon_dpm_display_configuration_changed(rdev);
1146
1147 /* wait for the rings to drain */
1148 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1149 struct radeon_ring *ring = &rdev->ring[i];
1150 if (ring->ready)
1151 radeon_fence_wait_empty(rdev, i);
1152 }
1153
1154 /* program the new power state */
1155 radeon_dpm_set_power_state(rdev);
1156
1157 /* update current power state */
1158 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps;
1159
1160 radeon_dpm_post_set_power_state(rdev);
1161
1162 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1163 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1164 rdev->pm.dpm.single_display = single_display;
1165
1166 if (rdev->asic->dpm.force_performance_level) {
1167 if (rdev->pm.dpm.thermal_active) {
1168 enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level;
1169 /* force low perf level for thermal */
1170 radeon_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_LOW);
1171 /* save the user's level */
1172 rdev->pm.dpm.forced_level = level;
1173 } else {
1174 /* otherwise, user selected level */
1175 radeon_dpm_force_performance_level(rdev, rdev->pm.dpm.forced_level);
1176 }
1177 }
1178
1179 done:
1180 mutex_unlock(&rdev->ring_lock);
1181 up_write(&rdev->pm.mclk_lock);
1182 }
1183
radeon_dpm_enable_uvd(struct radeon_device * rdev,bool enable)1184 void radeon_dpm_enable_uvd(struct radeon_device *rdev, bool enable)
1185 {
1186 enum radeon_pm_state_type dpm_state;
1187
1188 if (rdev->asic->dpm.powergate_uvd) {
1189 mutex_lock(&rdev->pm.mutex);
1190 /* don't powergate anything if we
1191 have active but pause streams */
1192 enable |= rdev->pm.dpm.sd > 0;
1193 enable |= rdev->pm.dpm.hd > 0;
1194 /* enable/disable UVD */
1195 radeon_dpm_powergate_uvd(rdev, !enable);
1196 mutex_unlock(&rdev->pm.mutex);
1197 } else {
1198 if (enable) {
1199 mutex_lock(&rdev->pm.mutex);
1200 rdev->pm.dpm.uvd_active = true;
1201 /* disable this for now */
1202 #if 0
1203 if ((rdev->pm.dpm.sd == 1) && (rdev->pm.dpm.hd == 0))
1204 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_SD;
1205 else if ((rdev->pm.dpm.sd == 2) && (rdev->pm.dpm.hd == 0))
1206 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
1207 else if ((rdev->pm.dpm.sd == 0) && (rdev->pm.dpm.hd == 1))
1208 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
1209 else if ((rdev->pm.dpm.sd == 0) && (rdev->pm.dpm.hd == 2))
1210 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD2;
1211 else
1212 #endif
1213 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD;
1214 rdev->pm.dpm.state = dpm_state;
1215 mutex_unlock(&rdev->pm.mutex);
1216 } else {
1217 mutex_lock(&rdev->pm.mutex);
1218 rdev->pm.dpm.uvd_active = false;
1219 mutex_unlock(&rdev->pm.mutex);
1220 }
1221
1222 radeon_pm_compute_clocks(rdev);
1223 }
1224 }
1225
radeon_dpm_enable_vce(struct radeon_device * rdev,bool enable)1226 void radeon_dpm_enable_vce(struct radeon_device *rdev, bool enable)
1227 {
1228 if (enable) {
1229 mutex_lock(&rdev->pm.mutex);
1230 rdev->pm.dpm.vce_active = true;
1231 /* XXX select vce level based on ring/task */
1232 rdev->pm.dpm.vce_level = RADEON_VCE_LEVEL_AC_ALL;
1233 mutex_unlock(&rdev->pm.mutex);
1234 } else {
1235 mutex_lock(&rdev->pm.mutex);
1236 rdev->pm.dpm.vce_active = false;
1237 mutex_unlock(&rdev->pm.mutex);
1238 }
1239
1240 radeon_pm_compute_clocks(rdev);
1241 }
1242
radeon_pm_suspend_old(struct radeon_device * rdev)1243 static void radeon_pm_suspend_old(struct radeon_device *rdev)
1244 {
1245 mutex_lock(&rdev->pm.mutex);
1246 if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1247 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE)
1248 rdev->pm.dynpm_state = DYNPM_STATE_SUSPENDED;
1249 }
1250 mutex_unlock(&rdev->pm.mutex);
1251
1252 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
1253 }
1254
radeon_pm_suspend_dpm(struct radeon_device * rdev)1255 static void radeon_pm_suspend_dpm(struct radeon_device *rdev)
1256 {
1257 mutex_lock(&rdev->pm.mutex);
1258 /* disable dpm */
1259 radeon_dpm_disable(rdev);
1260 /* reset the power state */
1261 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1262 rdev->pm.dpm_enabled = false;
1263 mutex_unlock(&rdev->pm.mutex);
1264 }
1265
radeon_pm_suspend(struct radeon_device * rdev)1266 void radeon_pm_suspend(struct radeon_device *rdev)
1267 {
1268 if (rdev->pm.pm_method == PM_METHOD_DPM)
1269 radeon_pm_suspend_dpm(rdev);
1270 else
1271 radeon_pm_suspend_old(rdev);
1272 }
1273
radeon_pm_resume_old(struct radeon_device * rdev)1274 static void radeon_pm_resume_old(struct radeon_device *rdev)
1275 {
1276 /* set up the default clocks if the MC ucode is loaded */
1277 if ((rdev->family >= CHIP_BARTS) &&
1278 (rdev->family <= CHIP_CAYMAN) &&
1279 rdev->mc_fw) {
1280 if (rdev->pm.default_vddc)
1281 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1282 SET_VOLTAGE_TYPE_ASIC_VDDC);
1283 if (rdev->pm.default_vddci)
1284 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1285 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1286 if (rdev->pm.default_sclk)
1287 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1288 if (rdev->pm.default_mclk)
1289 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1290 }
1291 /* asic init will reset the default power state */
1292 mutex_lock(&rdev->pm.mutex);
1293 rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
1294 rdev->pm.current_clock_mode_index = 0;
1295 rdev->pm.current_sclk = rdev->pm.default_sclk;
1296 rdev->pm.current_mclk = rdev->pm.default_mclk;
1297 if (rdev->pm.power_state) {
1298 rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
1299 rdev->pm.current_vddci = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.vddci;
1300 }
1301 if (rdev->pm.pm_method == PM_METHOD_DYNPM
1302 && rdev->pm.dynpm_state == DYNPM_STATE_SUSPENDED) {
1303 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1304 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1305 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1306 }
1307 mutex_unlock(&rdev->pm.mutex);
1308 radeon_pm_compute_clocks(rdev);
1309 }
1310
radeon_pm_resume_dpm(struct radeon_device * rdev)1311 static void radeon_pm_resume_dpm(struct radeon_device *rdev)
1312 {
1313 int ret;
1314
1315 /* asic init will reset to the boot state */
1316 mutex_lock(&rdev->pm.mutex);
1317 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1318 radeon_dpm_setup_asic(rdev);
1319 ret = radeon_dpm_enable(rdev);
1320 mutex_unlock(&rdev->pm.mutex);
1321 if (ret)
1322 goto dpm_resume_fail;
1323 rdev->pm.dpm_enabled = true;
1324 return;
1325
1326 dpm_resume_fail:
1327 DRM_ERROR("radeon: dpm resume failed\n");
1328 if ((rdev->family >= CHIP_BARTS) &&
1329 (rdev->family <= CHIP_CAYMAN) &&
1330 rdev->mc_fw) {
1331 if (rdev->pm.default_vddc)
1332 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1333 SET_VOLTAGE_TYPE_ASIC_VDDC);
1334 if (rdev->pm.default_vddci)
1335 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1336 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1337 if (rdev->pm.default_sclk)
1338 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1339 if (rdev->pm.default_mclk)
1340 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1341 }
1342 }
1343
radeon_pm_resume(struct radeon_device * rdev)1344 void radeon_pm_resume(struct radeon_device *rdev)
1345 {
1346 if (rdev->pm.pm_method == PM_METHOD_DPM)
1347 radeon_pm_resume_dpm(rdev);
1348 else
1349 radeon_pm_resume_old(rdev);
1350 }
1351
radeon_pm_init_old(struct radeon_device * rdev)1352 static int radeon_pm_init_old(struct radeon_device *rdev)
1353 {
1354 int ret;
1355
1356 rdev->pm.profile = PM_PROFILE_DEFAULT;
1357 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
1358 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1359 rdev->pm.dynpm_can_upclock = true;
1360 rdev->pm.dynpm_can_downclock = true;
1361 rdev->pm.default_sclk = rdev->clock.default_sclk;
1362 rdev->pm.default_mclk = rdev->clock.default_mclk;
1363 rdev->pm.current_sclk = rdev->clock.default_sclk;
1364 rdev->pm.current_mclk = rdev->clock.default_mclk;
1365 rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
1366
1367 if (rdev->bios) {
1368 if (rdev->is_atom_bios)
1369 radeon_atombios_get_power_modes(rdev);
1370 else
1371 radeon_combios_get_power_modes(rdev);
1372 radeon_pm_print_states(rdev);
1373 radeon_pm_init_profile(rdev);
1374 /* set up the default clocks if the MC ucode is loaded */
1375 if ((rdev->family >= CHIP_BARTS) &&
1376 (rdev->family <= CHIP_CAYMAN) &&
1377 rdev->mc_fw) {
1378 if (rdev->pm.default_vddc)
1379 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1380 SET_VOLTAGE_TYPE_ASIC_VDDC);
1381 if (rdev->pm.default_vddci)
1382 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1383 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1384 if (rdev->pm.default_sclk)
1385 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1386 if (rdev->pm.default_mclk)
1387 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1388 }
1389 }
1390
1391 /* set up the internal thermal sensor if applicable */
1392 ret = radeon_hwmon_init(rdev);
1393 if (ret)
1394 return ret;
1395
1396 INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
1397
1398 if (rdev->pm.num_power_states > 1) {
1399 radeon_debugfs_pm_init(rdev);
1400 DRM_INFO("radeon: power management initialized\n");
1401 }
1402
1403 return 0;
1404 }
1405
radeon_dpm_print_power_states(struct radeon_device * rdev)1406 static void radeon_dpm_print_power_states(struct radeon_device *rdev)
1407 {
1408 int i;
1409
1410 for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
1411 printk("== power state %d ==\n", i);
1412 radeon_dpm_print_power_state(rdev, &rdev->pm.dpm.ps[i]);
1413 }
1414 }
1415
radeon_pm_init_dpm(struct radeon_device * rdev)1416 static int radeon_pm_init_dpm(struct radeon_device *rdev)
1417 {
1418 int ret;
1419
1420 /* default to balanced state */
1421 rdev->pm.dpm.state = POWER_STATE_TYPE_BALANCED;
1422 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
1423 rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;
1424 rdev->pm.default_sclk = rdev->clock.default_sclk;
1425 rdev->pm.default_mclk = rdev->clock.default_mclk;
1426 rdev->pm.current_sclk = rdev->clock.default_sclk;
1427 rdev->pm.current_mclk = rdev->clock.default_mclk;
1428 rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
1429
1430 if (rdev->bios && rdev->is_atom_bios)
1431 radeon_atombios_get_power_modes(rdev);
1432 else
1433 return -EINVAL;
1434
1435 /* set up the internal thermal sensor if applicable */
1436 ret = radeon_hwmon_init(rdev);
1437 if (ret)
1438 return ret;
1439
1440 INIT_WORK(&rdev->pm.dpm.thermal.work, radeon_dpm_thermal_work_handler);
1441 mutex_lock(&rdev->pm.mutex);
1442 radeon_dpm_init(rdev);
1443 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1444 if (radeon_dpm == 1)
1445 radeon_dpm_print_power_states(rdev);
1446 radeon_dpm_setup_asic(rdev);
1447 ret = radeon_dpm_enable(rdev);
1448 mutex_unlock(&rdev->pm.mutex);
1449 if (ret)
1450 goto dpm_failed;
1451 rdev->pm.dpm_enabled = true;
1452
1453 radeon_debugfs_pm_init(rdev);
1454
1455 DRM_INFO("radeon: dpm initialized\n");
1456
1457 return 0;
1458
1459 dpm_failed:
1460 rdev->pm.dpm_enabled = false;
1461 if ((rdev->family >= CHIP_BARTS) &&
1462 (rdev->family <= CHIP_CAYMAN) &&
1463 rdev->mc_fw) {
1464 if (rdev->pm.default_vddc)
1465 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1466 SET_VOLTAGE_TYPE_ASIC_VDDC);
1467 if (rdev->pm.default_vddci)
1468 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1469 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1470 if (rdev->pm.default_sclk)
1471 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1472 if (rdev->pm.default_mclk)
1473 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1474 }
1475 DRM_ERROR("radeon: dpm initialization failed\n");
1476 return ret;
1477 }
1478
1479 struct radeon_dpm_quirk {
1480 u32 chip_vendor;
1481 u32 chip_device;
1482 u32 subsys_vendor;
1483 u32 subsys_device;
1484 };
1485
1486 /* cards with dpm stability problems */
1487 static struct radeon_dpm_quirk radeon_dpm_quirk_list[] = {
1488 /* TURKS - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386534 */
1489 { PCI_VENDOR_ID_ATI, 0x6759, 0x1682, 0x3195 },
1490 /* TURKS - https://bugzilla.kernel.org/show_bug.cgi?id=83731 */
1491 { PCI_VENDOR_ID_ATI, 0x6840, 0x1179, 0xfb81 },
1492 { 0, 0, 0, 0 },
1493 };
1494
radeon_pm_init(struct radeon_device * rdev)1495 int radeon_pm_init(struct radeon_device *rdev)
1496 {
1497 struct radeon_dpm_quirk *p = radeon_dpm_quirk_list;
1498 bool disable_dpm = false;
1499
1500 /* Apply dpm quirks */
1501 while (p && p->chip_device != 0) {
1502 if (rdev->pdev->vendor == p->chip_vendor &&
1503 rdev->pdev->device == p->chip_device &&
1504 rdev->pdev->subsystem_vendor == p->subsys_vendor &&
1505 rdev->pdev->subsystem_device == p->subsys_device) {
1506 disable_dpm = true;
1507 break;
1508 }
1509 ++p;
1510 }
1511
1512 /* enable dpm on rv6xx+ */
1513 switch (rdev->family) {
1514 case CHIP_RV610:
1515 case CHIP_RV630:
1516 case CHIP_RV620:
1517 case CHIP_RV635:
1518 case CHIP_RV670:
1519 case CHIP_RS780:
1520 case CHIP_RS880:
1521 case CHIP_RV770:
1522 /* DPM requires the RLC, RV770+ dGPU requires SMC */
1523 if (!rdev->rlc_fw)
1524 rdev->pm.pm_method = PM_METHOD_PROFILE;
1525 else if ((rdev->family >= CHIP_RV770) &&
1526 (!(rdev->flags & RADEON_IS_IGP)) &&
1527 (!rdev->smc_fw))
1528 rdev->pm.pm_method = PM_METHOD_PROFILE;
1529 else if (radeon_dpm == 1)
1530 rdev->pm.pm_method = PM_METHOD_DPM;
1531 else
1532 rdev->pm.pm_method = PM_METHOD_PROFILE;
1533 break;
1534 case CHIP_RV730:
1535 case CHIP_RV710:
1536 case CHIP_RV740:
1537 case CHIP_CEDAR:
1538 case CHIP_REDWOOD:
1539 case CHIP_JUNIPER:
1540 case CHIP_CYPRESS:
1541 case CHIP_HEMLOCK:
1542 case CHIP_PALM:
1543 case CHIP_SUMO:
1544 case CHIP_SUMO2:
1545 case CHIP_BARTS:
1546 case CHIP_TURKS:
1547 case CHIP_CAICOS:
1548 case CHIP_CAYMAN:
1549 case CHIP_ARUBA:
1550 case CHIP_TAHITI:
1551 case CHIP_PITCAIRN:
1552 case CHIP_VERDE:
1553 case CHIP_OLAND:
1554 case CHIP_HAINAN:
1555 case CHIP_BONAIRE:
1556 case CHIP_KABINI:
1557 case CHIP_KAVERI:
1558 case CHIP_HAWAII:
1559 case CHIP_MULLINS:
1560 /* DPM requires the RLC, RV770+ dGPU requires SMC */
1561 if (!rdev->rlc_fw)
1562 rdev->pm.pm_method = PM_METHOD_PROFILE;
1563 else if ((rdev->family >= CHIP_RV770) &&
1564 (!(rdev->flags & RADEON_IS_IGP)) &&
1565 (!rdev->smc_fw))
1566 rdev->pm.pm_method = PM_METHOD_PROFILE;
1567 else if (disable_dpm && (radeon_dpm == -1))
1568 rdev->pm.pm_method = PM_METHOD_PROFILE;
1569 else if (radeon_dpm == 0)
1570 rdev->pm.pm_method = PM_METHOD_PROFILE;
1571 else
1572 rdev->pm.pm_method = PM_METHOD_DPM;
1573 break;
1574 default:
1575 /* default to profile method */
1576 rdev->pm.pm_method = PM_METHOD_PROFILE;
1577 break;
1578 }
1579
1580 if (rdev->pm.pm_method == PM_METHOD_DPM)
1581 return radeon_pm_init_dpm(rdev);
1582 else
1583 return radeon_pm_init_old(rdev);
1584 }
1585
radeon_pm_late_init(struct radeon_device * rdev)1586 int radeon_pm_late_init(struct radeon_device *rdev)
1587 {
1588 int ret = 0;
1589
1590 if (rdev->pm.pm_method == PM_METHOD_DPM) {
1591 if (rdev->pm.dpm_enabled) {
1592 if (!rdev->pm.sysfs_initialized) {
1593 ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
1594 if (ret)
1595 DRM_ERROR("failed to create device file for dpm state\n");
1596 ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
1597 if (ret)
1598 DRM_ERROR("failed to create device file for dpm state\n");
1599 /* XXX: these are noops for dpm but are here for backwards compat */
1600 ret = device_create_file(rdev->dev, &dev_attr_power_profile);
1601 if (ret)
1602 DRM_ERROR("failed to create device file for power profile\n");
1603 ret = device_create_file(rdev->dev, &dev_attr_power_method);
1604 if (ret)
1605 DRM_ERROR("failed to create device file for power method\n");
1606 rdev->pm.sysfs_initialized = true;
1607 }
1608
1609 mutex_lock(&rdev->pm.mutex);
1610 ret = radeon_dpm_late_enable(rdev);
1611 mutex_unlock(&rdev->pm.mutex);
1612 if (ret) {
1613 rdev->pm.dpm_enabled = false;
1614 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1615 } else {
1616 /* set the dpm state for PX since there won't be
1617 * a modeset to call this.
1618 */
1619 radeon_pm_compute_clocks(rdev);
1620 }
1621 }
1622 } else {
1623 if ((rdev->pm.num_power_states > 1) &&
1624 (!rdev->pm.sysfs_initialized)) {
1625 /* where's the best place to put these? */
1626 ret = device_create_file(rdev->dev, &dev_attr_power_profile);
1627 if (ret)
1628 DRM_ERROR("failed to create device file for power profile\n");
1629 ret = device_create_file(rdev->dev, &dev_attr_power_method);
1630 if (ret)
1631 DRM_ERROR("failed to create device file for power method\n");
1632 else
1633 rdev->pm.sysfs_initialized = true;
1634 }
1635 }
1636 return ret;
1637 }
1638
radeon_pm_fini_old(struct radeon_device * rdev)1639 static void radeon_pm_fini_old(struct radeon_device *rdev)
1640 {
1641 if (rdev->pm.num_power_states > 1) {
1642 mutex_lock(&rdev->pm.mutex);
1643 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
1644 rdev->pm.profile = PM_PROFILE_DEFAULT;
1645 radeon_pm_update_profile(rdev);
1646 radeon_pm_set_clocks(rdev);
1647 } else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1648 /* reset default clocks */
1649 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
1650 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
1651 radeon_pm_set_clocks(rdev);
1652 }
1653 mutex_unlock(&rdev->pm.mutex);
1654
1655 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
1656
1657 device_remove_file(rdev->dev, &dev_attr_power_profile);
1658 device_remove_file(rdev->dev, &dev_attr_power_method);
1659 }
1660
1661 radeon_hwmon_fini(rdev);
1662 kfree(rdev->pm.power_state);
1663 }
1664
radeon_pm_fini_dpm(struct radeon_device * rdev)1665 static void radeon_pm_fini_dpm(struct radeon_device *rdev)
1666 {
1667 if (rdev->pm.num_power_states > 1) {
1668 mutex_lock(&rdev->pm.mutex);
1669 radeon_dpm_disable(rdev);
1670 mutex_unlock(&rdev->pm.mutex);
1671
1672 device_remove_file(rdev->dev, &dev_attr_power_dpm_state);
1673 device_remove_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
1674 /* XXX backwards compat */
1675 device_remove_file(rdev->dev, &dev_attr_power_profile);
1676 device_remove_file(rdev->dev, &dev_attr_power_method);
1677 }
1678 radeon_dpm_fini(rdev);
1679
1680 radeon_hwmon_fini(rdev);
1681 kfree(rdev->pm.power_state);
1682 }
1683
radeon_pm_fini(struct radeon_device * rdev)1684 void radeon_pm_fini(struct radeon_device *rdev)
1685 {
1686 if (rdev->pm.pm_method == PM_METHOD_DPM)
1687 radeon_pm_fini_dpm(rdev);
1688 else
1689 radeon_pm_fini_old(rdev);
1690 }
1691
radeon_pm_compute_clocks_old(struct radeon_device * rdev)1692 static void radeon_pm_compute_clocks_old(struct radeon_device *rdev)
1693 {
1694 struct drm_device *ddev = rdev->ddev;
1695 struct drm_crtc *crtc;
1696 struct radeon_crtc *radeon_crtc;
1697
1698 if (rdev->pm.num_power_states < 2)
1699 return;
1700
1701 mutex_lock(&rdev->pm.mutex);
1702
1703 rdev->pm.active_crtcs = 0;
1704 rdev->pm.active_crtc_count = 0;
1705 if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
1706 list_for_each_entry(crtc,
1707 &ddev->mode_config.crtc_list, head) {
1708 radeon_crtc = to_radeon_crtc(crtc);
1709 if (radeon_crtc->enabled) {
1710 rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
1711 rdev->pm.active_crtc_count++;
1712 }
1713 }
1714 }
1715
1716 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
1717 radeon_pm_update_profile(rdev);
1718 radeon_pm_set_clocks(rdev);
1719 } else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1720 if (rdev->pm.dynpm_state != DYNPM_STATE_DISABLED) {
1721 if (rdev->pm.active_crtc_count > 1) {
1722 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
1723 cancel_delayed_work(&rdev->pm.dynpm_idle_work);
1724
1725 rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
1726 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
1727 radeon_pm_get_dynpm_state(rdev);
1728 radeon_pm_set_clocks(rdev);
1729
1730 DRM_DEBUG_DRIVER("radeon: dynamic power management deactivated\n");
1731 }
1732 } else if (rdev->pm.active_crtc_count == 1) {
1733 /* TODO: Increase clocks if needed for current mode */
1734
1735 if (rdev->pm.dynpm_state == DYNPM_STATE_MINIMUM) {
1736 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1737 rdev->pm.dynpm_planned_action = DYNPM_ACTION_UPCLOCK;
1738 radeon_pm_get_dynpm_state(rdev);
1739 radeon_pm_set_clocks(rdev);
1740
1741 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1742 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1743 } else if (rdev->pm.dynpm_state == DYNPM_STATE_PAUSED) {
1744 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1745 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1746 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1747 DRM_DEBUG_DRIVER("radeon: dynamic power management activated\n");
1748 }
1749 } else { /* count == 0 */
1750 if (rdev->pm.dynpm_state != DYNPM_STATE_MINIMUM) {
1751 cancel_delayed_work(&rdev->pm.dynpm_idle_work);
1752
1753 rdev->pm.dynpm_state = DYNPM_STATE_MINIMUM;
1754 rdev->pm.dynpm_planned_action = DYNPM_ACTION_MINIMUM;
1755 radeon_pm_get_dynpm_state(rdev);
1756 radeon_pm_set_clocks(rdev);
1757 }
1758 }
1759 }
1760 }
1761
1762 mutex_unlock(&rdev->pm.mutex);
1763 }
1764
radeon_pm_compute_clocks_dpm(struct radeon_device * rdev)1765 static void radeon_pm_compute_clocks_dpm(struct radeon_device *rdev)
1766 {
1767 struct drm_device *ddev = rdev->ddev;
1768 struct drm_crtc *crtc;
1769 struct radeon_crtc *radeon_crtc;
1770 struct radeon_connector *radeon_connector;
1771
1772 if (!rdev->pm.dpm_enabled)
1773 return;
1774
1775 mutex_lock(&rdev->pm.mutex);
1776
1777 /* update active crtc counts */
1778 rdev->pm.dpm.new_active_crtcs = 0;
1779 rdev->pm.dpm.new_active_crtc_count = 0;
1780 rdev->pm.dpm.high_pixelclock_count = 0;
1781 if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
1782 list_for_each_entry(crtc,
1783 &ddev->mode_config.crtc_list, head) {
1784 radeon_crtc = to_radeon_crtc(crtc);
1785 if (crtc->enabled) {
1786 rdev->pm.dpm.new_active_crtcs |= (1 << radeon_crtc->crtc_id);
1787 rdev->pm.dpm.new_active_crtc_count++;
1788 if (!radeon_crtc->connector)
1789 continue;
1790
1791 radeon_connector = to_radeon_connector(radeon_crtc->connector);
1792 if (radeon_connector->pixelclock_for_modeset > 297000)
1793 rdev->pm.dpm.high_pixelclock_count++;
1794 }
1795 }
1796 }
1797
1798 /* update battery/ac status */
1799 if (power_supply_is_system_supplied() > 0)
1800 rdev->pm.dpm.ac_power = true;
1801 else
1802 rdev->pm.dpm.ac_power = false;
1803
1804 radeon_dpm_change_power_state_locked(rdev);
1805
1806 mutex_unlock(&rdev->pm.mutex);
1807
1808 }
1809
radeon_pm_compute_clocks(struct radeon_device * rdev)1810 void radeon_pm_compute_clocks(struct radeon_device *rdev)
1811 {
1812 if (rdev->pm.pm_method == PM_METHOD_DPM)
1813 radeon_pm_compute_clocks_dpm(rdev);
1814 else
1815 radeon_pm_compute_clocks_old(rdev);
1816 }
1817
radeon_pm_in_vbl(struct radeon_device * rdev)1818 static bool radeon_pm_in_vbl(struct radeon_device *rdev)
1819 {
1820 int crtc, vpos, hpos, vbl_status;
1821 bool in_vbl = true;
1822
1823 /* Iterate over all active crtc's. All crtc's must be in vblank,
1824 * otherwise return in_vbl == false.
1825 */
1826 for (crtc = 0; (crtc < rdev->num_crtc) && in_vbl; crtc++) {
1827 if (rdev->pm.active_crtcs & (1 << crtc)) {
1828 vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev,
1829 crtc,
1830 USE_REAL_VBLANKSTART,
1831 &vpos, &hpos, NULL, NULL,
1832 &rdev->mode_info.crtcs[crtc]->base.hwmode);
1833 if ((vbl_status & DRM_SCANOUTPOS_VALID) &&
1834 !(vbl_status & DRM_SCANOUTPOS_IN_VBLANK))
1835 in_vbl = false;
1836 }
1837 }
1838
1839 return in_vbl;
1840 }
1841
radeon_pm_debug_check_in_vbl(struct radeon_device * rdev,bool finish)1842 static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
1843 {
1844 u32 stat_crtc = 0;
1845 bool in_vbl = radeon_pm_in_vbl(rdev);
1846
1847 if (!in_vbl)
1848 DRM_DEBUG_DRIVER("not in vbl for pm change %08x at %s\n", stat_crtc,
1849 finish ? "exit" : "entry");
1850 return in_vbl;
1851 }
1852
radeon_dynpm_idle_work_handler(struct work_struct * work)1853 static void radeon_dynpm_idle_work_handler(struct work_struct *work)
1854 {
1855 struct radeon_device *rdev;
1856 int resched;
1857 rdev = container_of(work, struct radeon_device,
1858 pm.dynpm_idle_work.work);
1859
1860 resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
1861 mutex_lock(&rdev->pm.mutex);
1862 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
1863 int not_processed = 0;
1864 int i;
1865
1866 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1867 struct radeon_ring *ring = &rdev->ring[i];
1868
1869 if (ring->ready) {
1870 not_processed += radeon_fence_count_emitted(rdev, i);
1871 if (not_processed >= 3)
1872 break;
1873 }
1874 }
1875
1876 if (not_processed >= 3) { /* should upclock */
1877 if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_DOWNCLOCK) {
1878 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1879 } else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
1880 rdev->pm.dynpm_can_upclock) {
1881 rdev->pm.dynpm_planned_action =
1882 DYNPM_ACTION_UPCLOCK;
1883 rdev->pm.dynpm_action_timeout = jiffies +
1884 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
1885 }
1886 } else if (not_processed == 0) { /* should downclock */
1887 if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_UPCLOCK) {
1888 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1889 } else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
1890 rdev->pm.dynpm_can_downclock) {
1891 rdev->pm.dynpm_planned_action =
1892 DYNPM_ACTION_DOWNCLOCK;
1893 rdev->pm.dynpm_action_timeout = jiffies +
1894 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
1895 }
1896 }
1897
1898 /* Note, radeon_pm_set_clocks is called with static_switch set
1899 * to false since we want to wait for vbl to avoid flicker.
1900 */
1901 if (rdev->pm.dynpm_planned_action != DYNPM_ACTION_NONE &&
1902 time_after(jiffies, rdev->pm.dynpm_action_timeout)) {
1903 radeon_pm_get_dynpm_state(rdev);
1904 radeon_pm_set_clocks(rdev);
1905 }
1906
1907 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1908 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1909 }
1910 mutex_unlock(&rdev->pm.mutex);
1911 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
1912 }
1913
1914 /*
1915 * Debugfs info
1916 */
1917 #if defined(CONFIG_DEBUG_FS)
1918
radeon_debugfs_pm_info_show(struct seq_file * m,void * unused)1919 static int radeon_debugfs_pm_info_show(struct seq_file *m, void *unused)
1920 {
1921 struct radeon_device *rdev = (struct radeon_device *)m->private;
1922 struct drm_device *ddev = rdev->ddev;
1923
1924 if ((rdev->flags & RADEON_IS_PX) &&
1925 (ddev->switch_power_state != DRM_SWITCH_POWER_ON)) {
1926 seq_printf(m, "PX asic powered off\n");
1927 } else if (rdev->pm.dpm_enabled) {
1928 mutex_lock(&rdev->pm.mutex);
1929 if (rdev->asic->dpm.debugfs_print_current_performance_level)
1930 radeon_dpm_debugfs_print_current_performance_level(rdev, m);
1931 else
1932 seq_printf(m, "Debugfs support not implemented for this asic\n");
1933 mutex_unlock(&rdev->pm.mutex);
1934 } else {
1935 seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);
1936 /* radeon_get_engine_clock is not reliable on APUs so just print the current clock */
1937 if ((rdev->family >= CHIP_PALM) && (rdev->flags & RADEON_IS_IGP))
1938 seq_printf(m, "current engine clock: %u0 kHz\n", rdev->pm.current_sclk);
1939 else
1940 seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
1941 seq_printf(m, "default memory clock: %u0 kHz\n", rdev->pm.default_mclk);
1942 if (rdev->asic->pm.get_memory_clock)
1943 seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
1944 if (rdev->pm.current_vddc)
1945 seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);
1946 if (rdev->asic->pm.get_pcie_lanes)
1947 seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
1948 }
1949
1950 return 0;
1951 }
1952
1953 DEFINE_SHOW_ATTRIBUTE(radeon_debugfs_pm_info);
1954 #endif
1955
radeon_debugfs_pm_init(struct radeon_device * rdev)1956 static void radeon_debugfs_pm_init(struct radeon_device *rdev)
1957 {
1958 #if defined(CONFIG_DEBUG_FS)
1959 struct dentry *root = rdev->ddev->primary->debugfs_root;
1960
1961 debugfs_create_file("radeon_pm_info", 0444, root, rdev,
1962 &radeon_debugfs_pm_info_fops);
1963
1964 #endif
1965 }
1966
