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