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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / gpu / drm / radeon / radeon_pm.c
blob8c5d6fda0d757da41d0145f5aece5ef9fbcf67a6
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_debugfs.h>
30 #include <drm/drm_vblank.h>
31
32 #include "atom.h"
33 #include "avivod.h"
34 #include "r600_dpm.h"
35 #include "radeon.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 int 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
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
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
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
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.mem.mem_type == TTM_PL_VRAM)
158 ttm_bo_unmap_virtual(&bo->tbo);
159 }
160 }
161
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
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
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
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
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 snprintf(buf, PAGE_SIZE, "%s\n",
364 (cp == PM_PROFILE_AUTO) ? "auto" :
365 (cp == PM_PROFILE_LOW) ? "low" :
366 (cp == PM_PROFILE_MID) ? "mid" :
367 (cp == PM_PROFILE_HIGH) ? "high" : "default");
368 }
369
370 static ssize_t radeon_set_pm_profile(struct device *dev,
371 struct device_attribute *attr,
372 const char *buf,
373 size_t count)
374 {
375 struct drm_device *ddev = dev_get_drvdata(dev);
376 struct radeon_device *rdev = ddev->dev_private;
377
378 /* Can't set profile when the card is off */
379 if ((rdev->flags & RADEON_IS_PX) &&
380 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
381 return -EINVAL;
382
383 mutex_lock(&rdev->pm.mutex);
384 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
385 if (strncmp("default", buf, strlen("default")) == 0)
386 rdev->pm.profile = PM_PROFILE_DEFAULT;
387 else if (strncmp("auto", buf, strlen("auto")) == 0)
388 rdev->pm.profile = PM_PROFILE_AUTO;
389 else if (strncmp("low", buf, strlen("low")) == 0)
390 rdev->pm.profile = PM_PROFILE_LOW;
391 else if (strncmp("mid", buf, strlen("mid")) == 0)
392 rdev->pm.profile = PM_PROFILE_MID;
393 else if (strncmp("high", buf, strlen("high")) == 0)
394 rdev->pm.profile = PM_PROFILE_HIGH;
395 else {
396 count = -EINVAL;
397 goto fail;
398 }
399 radeon_pm_update_profile(rdev);
400 radeon_pm_set_clocks(rdev);
401 } else
402 count = -EINVAL;
403
404 fail:
405 mutex_unlock(&rdev->pm.mutex);
406
407 return count;
408 }
409
410 static ssize_t radeon_get_pm_method(struct device *dev,
411 struct device_attribute *attr,
412 char *buf)
413 {
414 struct drm_device *ddev = dev_get_drvdata(dev);
415 struct radeon_device *rdev = ddev->dev_private;
416 int pm = rdev->pm.pm_method;
417
418 return snprintf(buf, PAGE_SIZE, "%s\n",
419 (pm == PM_METHOD_DYNPM) ? "dynpm" :
420 (pm == PM_METHOD_PROFILE) ? "profile" : "dpm");
421 }
422
423 static ssize_t radeon_set_pm_method(struct device *dev,
424 struct device_attribute *attr,
425 const char *buf,
426 size_t count)
427 {
428 struct drm_device *ddev = dev_get_drvdata(dev);
429 struct radeon_device *rdev = ddev->dev_private;
430
431 /* Can't set method when the card is off */
432 if ((rdev->flags & RADEON_IS_PX) &&
433 (ddev->switch_power_state != DRM_SWITCH_POWER_ON)) {
434 count = -EINVAL;
435 goto fail;
436 }
437
438 /* we don't support the legacy modes with dpm */
439 if (rdev->pm.pm_method == PM_METHOD_DPM) {
440 count = -EINVAL;
441 goto fail;
442 }
443
444 if (strncmp("dynpm", buf, strlen("dynpm")) == 0) {
445 mutex_lock(&rdev->pm.mutex);
446 rdev->pm.pm_method = PM_METHOD_DYNPM;
447 rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
448 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
449 mutex_unlock(&rdev->pm.mutex);
450 } else if (strncmp("profile", buf, strlen("profile")) == 0) {
451 mutex_lock(&rdev->pm.mutex);
452 /* disable dynpm */
453 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
454 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
455 rdev->pm.pm_method = PM_METHOD_PROFILE;
456 mutex_unlock(&rdev->pm.mutex);
457 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
458 } else {
459 count = -EINVAL;
460 goto fail;
461 }
462 radeon_pm_compute_clocks(rdev);
463 fail:
464 return count;
465 }
466
467 static ssize_t radeon_get_dpm_state(struct device *dev,
468 struct device_attribute *attr,
469 char *buf)
470 {
471 struct drm_device *ddev = dev_get_drvdata(dev);
472 struct radeon_device *rdev = ddev->dev_private;
473 enum radeon_pm_state_type pm = rdev->pm.dpm.user_state;
474
475 return snprintf(buf, PAGE_SIZE, "%s\n",
476 (pm == POWER_STATE_TYPE_BATTERY) ? "battery" :
477 (pm == POWER_STATE_TYPE_BALANCED) ? "balanced" : "performance");
478 }
479
480 static ssize_t radeon_set_dpm_state(struct device *dev,
481 struct device_attribute *attr,
482 const char *buf,
483 size_t count)
484 {
485 struct drm_device *ddev = dev_get_drvdata(dev);
486 struct radeon_device *rdev = ddev->dev_private;
487
488 mutex_lock(&rdev->pm.mutex);
489 if (strncmp("battery", buf, strlen("battery")) == 0)
490 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BATTERY;
491 else if (strncmp("balanced", buf, strlen("balanced")) == 0)
492 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
493 else if (strncmp("performance", buf, strlen("performance")) == 0)
494 rdev->pm.dpm.user_state = POWER_STATE_TYPE_PERFORMANCE;
495 else {
496 mutex_unlock(&rdev->pm.mutex);
497 count = -EINVAL;
498 goto fail;
499 }
500 mutex_unlock(&rdev->pm.mutex);
501
502 /* Can't set dpm state when the card is off */
503 if (!(rdev->flags & RADEON_IS_PX) ||
504 (ddev->switch_power_state == DRM_SWITCH_POWER_ON))
505 radeon_pm_compute_clocks(rdev);
506
507 fail:
508 return count;
509 }
510
511 static ssize_t radeon_get_dpm_forced_performance_level(struct device *dev,
512 struct device_attribute *attr,
513 char *buf)
514 {
515 struct drm_device *ddev = dev_get_drvdata(dev);
516 struct radeon_device *rdev = ddev->dev_private;
517 enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level;
518
519 if ((rdev->flags & RADEON_IS_PX) &&
520 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
521 return snprintf(buf, PAGE_SIZE, "off\n");
522
523 return snprintf(buf, PAGE_SIZE, "%s\n",
524 (level == RADEON_DPM_FORCED_LEVEL_AUTO) ? "auto" :
525 (level == RADEON_DPM_FORCED_LEVEL_LOW) ? "low" : "high");
526 }
527
528 static ssize_t radeon_set_dpm_forced_performance_level(struct device *dev,
529 struct device_attribute *attr,
530 const char *buf,
531 size_t count)
532 {
533 struct drm_device *ddev = dev_get_drvdata(dev);
534 struct radeon_device *rdev = ddev->dev_private;
535 enum radeon_dpm_forced_level level;
536 int ret = 0;
537
538 /* Can't force performance level when the card is off */
539 if ((rdev->flags & RADEON_IS_PX) &&
540 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
541 return -EINVAL;
542
543 mutex_lock(&rdev->pm.mutex);
544 if (strncmp("low", buf, strlen("low")) == 0) {
545 level = RADEON_DPM_FORCED_LEVEL_LOW;
546 } else if (strncmp("high", buf, strlen("high")) == 0) {
547 level = RADEON_DPM_FORCED_LEVEL_HIGH;
548 } else if (strncmp("auto", buf, strlen("auto")) == 0) {
549 level = RADEON_DPM_FORCED_LEVEL_AUTO;
550 } else {
551 count = -EINVAL;
552 goto fail;
553 }
554 if (rdev->asic->dpm.force_performance_level) {
555 if (rdev->pm.dpm.thermal_active) {
556 count = -EINVAL;
557 goto fail;
558 }
559 ret = radeon_dpm_force_performance_level(rdev, level);
560 if (ret)
561 count = -EINVAL;
562 }
563 fail:
564 mutex_unlock(&rdev->pm.mutex);
565
566 return count;
567 }
568
569 static ssize_t radeon_hwmon_get_pwm1_enable(struct device *dev,
570 struct device_attribute *attr,
571 char *buf)
572 {
573 struct radeon_device *rdev = dev_get_drvdata(dev);
574 u32 pwm_mode = 0;
575
576 if (rdev->asic->dpm.fan_ctrl_get_mode)
577 pwm_mode = rdev->asic->dpm.fan_ctrl_get_mode(rdev);
578
579 /* never 0 (full-speed), fuse or smc-controlled always */
580 return sprintf(buf, "%i\n", pwm_mode == FDO_PWM_MODE_STATIC ? 1 : 2);
581 }
582
583 static ssize_t radeon_hwmon_set_pwm1_enable(struct device *dev,
584 struct device_attribute *attr,
585 const char *buf,
586 size_t count)
587 {
588 struct radeon_device *rdev = dev_get_drvdata(dev);
589 int err;
590 int value;
591
592 if(!rdev->asic->dpm.fan_ctrl_set_mode)
593 return -EINVAL;
594
595 err = kstrtoint(buf, 10, &value);
596 if (err)
597 return err;
598
599 switch (value) {
600 case 1: /* manual, percent-based */
601 rdev->asic->dpm.fan_ctrl_set_mode(rdev, FDO_PWM_MODE_STATIC);
602 break;
603 default: /* disable */
604 rdev->asic->dpm.fan_ctrl_set_mode(rdev, 0);
605 break;
606 }
607
608 return count;
609 }
610
611 static ssize_t radeon_hwmon_get_pwm1_min(struct device *dev,
612 struct device_attribute *attr,
613 char *buf)
614 {
615 return sprintf(buf, "%i\n", 0);
616 }
617
618 static ssize_t radeon_hwmon_get_pwm1_max(struct device *dev,
619 struct device_attribute *attr,
620 char *buf)
621 {
622 return sprintf(buf, "%i\n", 255);
623 }
624
625 static ssize_t radeon_hwmon_set_pwm1(struct device *dev,
626 struct device_attribute *attr,
627 const char *buf, size_t count)
628 {
629 struct radeon_device *rdev = dev_get_drvdata(dev);
630 int err;
631 u32 value;
632
633 err = kstrtou32(buf, 10, &value);
634 if (err)
635 return err;
636
637 value = (value * 100) / 255;
638
639 err = rdev->asic->dpm.set_fan_speed_percent(rdev, value);
640 if (err)
641 return err;
642
643 return count;
644 }
645
646 static ssize_t radeon_hwmon_get_pwm1(struct device *dev,
647 struct device_attribute *attr,
648 char *buf)
649 {
650 struct radeon_device *rdev = dev_get_drvdata(dev);
651 int err;
652 u32 speed;
653
654 err = rdev->asic->dpm.get_fan_speed_percent(rdev, &speed);
655 if (err)
656 return err;
657
658 speed = (speed * 255) / 100;
659
660 return sprintf(buf, "%i\n", speed);
661 }
662
663 static DEVICE_ATTR(power_profile, S_IRUGO | S_IWUSR, radeon_get_pm_profile, radeon_set_pm_profile);
664 static DEVICE_ATTR(power_method, S_IRUGO | S_IWUSR, radeon_get_pm_method, radeon_set_pm_method);
665 static DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, radeon_get_dpm_state, radeon_set_dpm_state);
666 static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR,
667 radeon_get_dpm_forced_performance_level,
668 radeon_set_dpm_forced_performance_level);
669
670 static ssize_t radeon_hwmon_show_temp(struct device *dev,
671 struct device_attribute *attr,
672 char *buf)
673 {
674 struct radeon_device *rdev = dev_get_drvdata(dev);
675 struct drm_device *ddev = rdev->ddev;
676 int temp;
677
678 /* Can't get temperature when the card is off */
679 if ((rdev->flags & RADEON_IS_PX) &&
680 (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
681 return -EINVAL;
682
683 if (rdev->asic->pm.get_temperature)
684 temp = radeon_get_temperature(rdev);
685 else
686 temp = 0;
687
688 return snprintf(buf, PAGE_SIZE, "%d\n", temp);
689 }
690
691 static ssize_t radeon_hwmon_show_temp_thresh(struct device *dev,
692 struct device_attribute *attr,
693 char *buf)
694 {
695 struct radeon_device *rdev = dev_get_drvdata(dev);
696 int hyst = to_sensor_dev_attr(attr)->index;
697 int temp;
698
699 if (hyst)
700 temp = rdev->pm.dpm.thermal.min_temp;
701 else
702 temp = rdev->pm.dpm.thermal.max_temp;
703
704 return snprintf(buf, PAGE_SIZE, "%d\n", temp);
705 }
706
707 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, radeon_hwmon_show_temp, NULL, 0);
708 static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, radeon_hwmon_show_temp_thresh, NULL, 0);
709 static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, radeon_hwmon_show_temp_thresh, NULL, 1);
710 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, radeon_hwmon_get_pwm1, radeon_hwmon_set_pwm1, 0);
711 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, radeon_hwmon_get_pwm1_enable, radeon_hwmon_set_pwm1_enable, 0);
712 static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, radeon_hwmon_get_pwm1_min, NULL, 0);
713 static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO, radeon_hwmon_get_pwm1_max, NULL, 0);
714
715
716 static struct attribute *hwmon_attributes[] = {
717 &sensor_dev_attr_temp1_input.dev_attr.attr,
718 &sensor_dev_attr_temp1_crit.dev_attr.attr,
719 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
720 &sensor_dev_attr_pwm1.dev_attr.attr,
721 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
722 &sensor_dev_attr_pwm1_min.dev_attr.attr,
723 &sensor_dev_attr_pwm1_max.dev_attr.attr,
724 NULL
725 };
726
727 static umode_t hwmon_attributes_visible(struct kobject *kobj,
728 struct attribute *attr, int index)
729 {
730 struct device *dev = kobj_to_dev(kobj);
731 struct radeon_device *rdev = dev_get_drvdata(dev);
732 umode_t effective_mode = attr->mode;
733
734 /* Skip attributes if DPM is not enabled */
735 if (rdev->pm.pm_method != PM_METHOD_DPM &&
736 (attr == &sensor_dev_attr_temp1_crit.dev_attr.attr ||
737 attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr ||
738 attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
739 attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
740 attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
741 attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
742 return 0;
743
744 /* Skip fan attributes if fan is not present */
745 if (rdev->pm.no_fan &&
746 (attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
747 attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
748 attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
749 attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
750 return 0;
751
752 /* mask fan attributes if we have no bindings for this asic to expose */
753 if ((!rdev->asic->dpm.get_fan_speed_percent &&
754 attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't query fan */
755 (!rdev->asic->dpm.fan_ctrl_get_mode &&
756 attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't query state */
757 effective_mode &= ~S_IRUGO;
758
759 if ((!rdev->asic->dpm.set_fan_speed_percent &&
760 attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't manage fan */
761 (!rdev->asic->dpm.fan_ctrl_set_mode &&
762 attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't manage state */
763 effective_mode &= ~S_IWUSR;
764
765 /* hide max/min values if we can't both query and manage the fan */
766 if ((!rdev->asic->dpm.set_fan_speed_percent &&
767 !rdev->asic->dpm.get_fan_speed_percent) &&
768 (attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
769 attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
770 return 0;
771
772 return effective_mode;
773 }
774
775 static const struct attribute_group hwmon_attrgroup = {
776 .attrs = hwmon_attributes,
777 .is_visible = hwmon_attributes_visible,
778 };
779
780 static const struct attribute_group *hwmon_groups[] = {
781 &hwmon_attrgroup,
782 NULL
783 };
784
785 static int radeon_hwmon_init(struct radeon_device *rdev)
786 {
787 int err = 0;
788
789 switch (rdev->pm.int_thermal_type) {
790 case THERMAL_TYPE_RV6XX:
791 case THERMAL_TYPE_RV770:
792 case THERMAL_TYPE_EVERGREEN:
793 case THERMAL_TYPE_NI:
794 case THERMAL_TYPE_SUMO:
795 case THERMAL_TYPE_SI:
796 case THERMAL_TYPE_CI:
797 case THERMAL_TYPE_KV:
798 if (rdev->asic->pm.get_temperature == NULL)
799 return err;
800 rdev->pm.int_hwmon_dev = hwmon_device_register_with_groups(rdev->dev,
801 "radeon", rdev,
802 hwmon_groups);
803 if (IS_ERR(rdev->pm.int_hwmon_dev)) {
804 err = PTR_ERR(rdev->pm.int_hwmon_dev);
805 dev_err(rdev->dev,
806 "Unable to register hwmon device: %d\n", err);
807 }
808 break;
809 default:
810 break;
811 }
812
813 return err;
814 }
815
816 static void radeon_hwmon_fini(struct radeon_device *rdev)
817 {
818 if (rdev->pm.int_hwmon_dev)
819 hwmon_device_unregister(rdev->pm.int_hwmon_dev);
820 }
821
822 static void radeon_dpm_thermal_work_handler(struct work_struct *work)
823 {
824 struct radeon_device *rdev =
825 container_of(work, struct radeon_device,
826 pm.dpm.thermal.work);
827 /* switch to the thermal state */
828 enum radeon_pm_state_type dpm_state = POWER_STATE_TYPE_INTERNAL_THERMAL;
829
830 if (!rdev->pm.dpm_enabled)
831 return;
832
833 if (rdev->asic->pm.get_temperature) {
834 int temp = radeon_get_temperature(rdev);
835
836 if (temp < rdev->pm.dpm.thermal.min_temp)
837 /* switch back the user state */
838 dpm_state = rdev->pm.dpm.user_state;
839 } else {
840 if (rdev->pm.dpm.thermal.high_to_low)
841 /* switch back the user state */
842 dpm_state = rdev->pm.dpm.user_state;
843 }
844 mutex_lock(&rdev->pm.mutex);
845 if (dpm_state == POWER_STATE_TYPE_INTERNAL_THERMAL)
846 rdev->pm.dpm.thermal_active = true;
847 else
848 rdev->pm.dpm.thermal_active = false;
849 rdev->pm.dpm.state = dpm_state;
850 mutex_unlock(&rdev->pm.mutex);
851
852 radeon_pm_compute_clocks(rdev);
853 }
854
855 static bool radeon_dpm_single_display(struct radeon_device *rdev)
856 {
857 bool single_display = (rdev->pm.dpm.new_active_crtc_count < 2) ?
858 true : false;
859
860 /* check if the vblank period is too short to adjust the mclk */
861 if (single_display && rdev->asic->dpm.vblank_too_short) {
862 if (radeon_dpm_vblank_too_short(rdev))
863 single_display = false;
864 }
865
866 /* 120hz tends to be problematic even if they are under the
867 * vblank limit.
868 */
869 if (single_display && (r600_dpm_get_vrefresh(rdev) >= 120))
870 single_display = false;
871
872 return single_display;
873 }
874
875 static struct radeon_ps *radeon_dpm_pick_power_state(struct radeon_device *rdev,
876 enum radeon_pm_state_type dpm_state)
877 {
878 int i;
879 struct radeon_ps *ps;
880 u32 ui_class;
881 bool single_display = radeon_dpm_single_display(rdev);
882
883 /* certain older asics have a separare 3D performance state,
884 * so try that first if the user selected performance
885 */
886 if (dpm_state == POWER_STATE_TYPE_PERFORMANCE)
887 dpm_state = POWER_STATE_TYPE_INTERNAL_3DPERF;
888 /* balanced states don't exist at the moment */
889 if (dpm_state == POWER_STATE_TYPE_BALANCED)
890 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
891
892 restart_search:
893 /* Pick the best power state based on current conditions */
894 for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
895 ps = &rdev->pm.dpm.ps[i];
896 ui_class = ps->class & ATOM_PPLIB_CLASSIFICATION_UI_MASK;
897 switch (dpm_state) {
898 /* user states */
899 case POWER_STATE_TYPE_BATTERY:
900 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BATTERY) {
901 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
902 if (single_display)
903 return ps;
904 } else
905 return ps;
906 }
907 break;
908 case POWER_STATE_TYPE_BALANCED:
909 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BALANCED) {
910 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
911 if (single_display)
912 return ps;
913 } else
914 return ps;
915 }
916 break;
917 case POWER_STATE_TYPE_PERFORMANCE:
918 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE) {
919 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
920 if (single_display)
921 return ps;
922 } else
923 return ps;
924 }
925 break;
926 /* internal states */
927 case POWER_STATE_TYPE_INTERNAL_UVD:
928 if (rdev->pm.dpm.uvd_ps)
929 return rdev->pm.dpm.uvd_ps;
930 else
931 break;
932 case POWER_STATE_TYPE_INTERNAL_UVD_SD:
933 if (ps->class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
934 return ps;
935 break;
936 case POWER_STATE_TYPE_INTERNAL_UVD_HD:
937 if (ps->class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
938 return ps;
939 break;
940 case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
941 if (ps->class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
942 return ps;
943 break;
944 case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
945 if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
946 return ps;
947 break;
948 case POWER_STATE_TYPE_INTERNAL_BOOT:
949 return rdev->pm.dpm.boot_ps;
950 case POWER_STATE_TYPE_INTERNAL_THERMAL:
951 if (ps->class & ATOM_PPLIB_CLASSIFICATION_THERMAL)
952 return ps;
953 break;
954 case POWER_STATE_TYPE_INTERNAL_ACPI:
955 if (ps->class & ATOM_PPLIB_CLASSIFICATION_ACPI)
956 return ps;
957 break;
958 case POWER_STATE_TYPE_INTERNAL_ULV:
959 if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_ULV)
960 return ps;
961 break;
962 case POWER_STATE_TYPE_INTERNAL_3DPERF:
963 if (ps->class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE)
964 return ps;
965 break;
966 default:
967 break;
968 }
969 }
970 /* use a fallback state if we didn't match */
971 switch (dpm_state) {
972 case POWER_STATE_TYPE_INTERNAL_UVD_SD:
973 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
974 goto restart_search;
975 case POWER_STATE_TYPE_INTERNAL_UVD_HD:
976 case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
977 case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
978 if (rdev->pm.dpm.uvd_ps) {
979 return rdev->pm.dpm.uvd_ps;
980 } else {
981 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
982 goto restart_search;
983 }
984 case POWER_STATE_TYPE_INTERNAL_THERMAL:
985 dpm_state = POWER_STATE_TYPE_INTERNAL_ACPI;
986 goto restart_search;
987 case POWER_STATE_TYPE_INTERNAL_ACPI:
988 dpm_state = POWER_STATE_TYPE_BATTERY;
989 goto restart_search;
990 case POWER_STATE_TYPE_BATTERY:
991 case POWER_STATE_TYPE_BALANCED:
992 case POWER_STATE_TYPE_INTERNAL_3DPERF:
993 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
994 goto restart_search;
995 default:
996 break;
997 }
998
999 return NULL;
1000 }
1001
1002 static void radeon_dpm_change_power_state_locked(struct radeon_device *rdev)
1003 {
1004 int i;
1005 struct radeon_ps *ps;
1006 enum radeon_pm_state_type dpm_state;
1007 int ret;
1008 bool single_display = radeon_dpm_single_display(rdev);
1009
1010 /* if dpm init failed */
1011 if (!rdev->pm.dpm_enabled)
1012 return;
1013
1014 if (rdev->pm.dpm.user_state != rdev->pm.dpm.state) {
1015 /* add other state override checks here */
1016 if ((!rdev->pm.dpm.thermal_active) &&
1017 (!rdev->pm.dpm.uvd_active))
1018 rdev->pm.dpm.state = rdev->pm.dpm.user_state;
1019 }
1020 dpm_state = rdev->pm.dpm.state;
1021
1022 ps = radeon_dpm_pick_power_state(rdev, dpm_state);
1023 if (ps)
1024 rdev->pm.dpm.requested_ps = ps;
1025 else
1026 return;
1027
1028 /* no need to reprogram if nothing changed unless we are on BTC+ */
1029 if (rdev->pm.dpm.current_ps == rdev->pm.dpm.requested_ps) {
1030 /* vce just modifies an existing state so force a change */
1031 if (ps->vce_active != rdev->pm.dpm.vce_active)
1032 goto force;
1033 /* user has made a display change (such as timing) */
1034 if (rdev->pm.dpm.single_display != single_display)
1035 goto force;
1036 if ((rdev->family < CHIP_BARTS) || (rdev->flags & RADEON_IS_IGP)) {
1037 /* for pre-BTC and APUs if the num crtcs changed but state is the same,
1038 * all we need to do is update the display configuration.
1039 */
1040 if (rdev->pm.dpm.new_active_crtcs != rdev->pm.dpm.current_active_crtcs) {
1041 /* update display watermarks based on new power state */
1042 radeon_bandwidth_update(rdev);
1043 /* update displays */
1044 radeon_dpm_display_configuration_changed(rdev);
1045 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1046 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1047 }
1048 return;
1049 } else {
1050 /* for BTC+ if the num crtcs hasn't changed and state is the same,
1051 * nothing to do, if the num crtcs is > 1 and state is the same,
1052 * update display configuration.
1053 */
1054 if (rdev->pm.dpm.new_active_crtcs ==
1055 rdev->pm.dpm.current_active_crtcs) {
1056 return;
1057 } else {
1058 if ((rdev->pm.dpm.current_active_crtc_count > 1) &&
1059 (rdev->pm.dpm.new_active_crtc_count > 1)) {
1060 /* update display watermarks based on new power state */
1061 radeon_bandwidth_update(rdev);
1062 /* update displays */
1063 radeon_dpm_display_configuration_changed(rdev);
1064 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1065 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1066 return;
1067 }
1068 }
1069 }
1070 }
1071
1072 force:
1073 if (radeon_dpm == 1) {
1074 printk("switching from power state:\n");
1075 radeon_dpm_print_power_state(rdev, rdev->pm.dpm.current_ps);
1076 printk("switching to power state:\n");
1077 radeon_dpm_print_power_state(rdev, rdev->pm.dpm.requested_ps);
1078 }
1079
1080 down_write(&rdev->pm.mclk_lock);
1081 mutex_lock(&rdev->ring_lock);
1082
1083 /* update whether vce is active */
1084 ps->vce_active = rdev->pm.dpm.vce_active;
1085
1086 ret = radeon_dpm_pre_set_power_state(rdev);
1087 if (ret)
1088 goto done;
1089
1090 /* update display watermarks based on new power state */
1091 radeon_bandwidth_update(rdev);
1092 /* update displays */
1093 radeon_dpm_display_configuration_changed(rdev);
1094
1095 /* wait for the rings to drain */
1096 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1097 struct radeon_ring *ring = &rdev->ring[i];
1098 if (ring->ready)
1099 radeon_fence_wait_empty(rdev, i);
1100 }
1101
1102 /* program the new power state */
1103 radeon_dpm_set_power_state(rdev);
1104
1105 /* update current power state */
1106 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps;
1107
1108 radeon_dpm_post_set_power_state(rdev);
1109
1110 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1111 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1112 rdev->pm.dpm.single_display = single_display;
1113
1114 if (rdev->asic->dpm.force_performance_level) {
1115 if (rdev->pm.dpm.thermal_active) {
1116 enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level;
1117 /* force low perf level for thermal */
1118 radeon_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_LOW);
1119 /* save the user's level */
1120 rdev->pm.dpm.forced_level = level;
1121 } else {
1122 /* otherwise, user selected level */
1123 radeon_dpm_force_performance_level(rdev, rdev->pm.dpm.forced_level);
1124 }
1125 }
1126
1127 done:
1128 mutex_unlock(&rdev->ring_lock);
1129 up_write(&rdev->pm.mclk_lock);
1130 }
1131
1132 void radeon_dpm_enable_uvd(struct radeon_device *rdev, bool enable)
1133 {
1134 enum radeon_pm_state_type dpm_state;
1135
1136 if (rdev->asic->dpm.powergate_uvd) {
1137 mutex_lock(&rdev->pm.mutex);
1138 /* don't powergate anything if we
1139 have active but pause streams */
1140 enable |= rdev->pm.dpm.sd > 0;
1141 enable |= rdev->pm.dpm.hd > 0;
1142 /* enable/disable UVD */
1143 radeon_dpm_powergate_uvd(rdev, !enable);
1144 mutex_unlock(&rdev->pm.mutex);
1145 } else {
1146 if (enable) {
1147 mutex_lock(&rdev->pm.mutex);
1148 rdev->pm.dpm.uvd_active = true;
1149 /* disable this for now */
1150 #if 0
1151 if ((rdev->pm.dpm.sd == 1) && (rdev->pm.dpm.hd == 0))
1152 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_SD;
1153 else if ((rdev->pm.dpm.sd == 2) && (rdev->pm.dpm.hd == 0))
1154 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
1155 else if ((rdev->pm.dpm.sd == 0) && (rdev->pm.dpm.hd == 1))
1156 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
1157 else if ((rdev->pm.dpm.sd == 0) && (rdev->pm.dpm.hd == 2))
1158 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD2;
1159 else
1160 #endif
1161 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD;
1162 rdev->pm.dpm.state = dpm_state;
1163 mutex_unlock(&rdev->pm.mutex);
1164 } else {
1165 mutex_lock(&rdev->pm.mutex);
1166 rdev->pm.dpm.uvd_active = false;
1167 mutex_unlock(&rdev->pm.mutex);
1168 }
1169
1170 radeon_pm_compute_clocks(rdev);
1171 }
1172 }
1173
1174 void radeon_dpm_enable_vce(struct radeon_device *rdev, bool enable)
1175 {
1176 if (enable) {
1177 mutex_lock(&rdev->pm.mutex);
1178 rdev->pm.dpm.vce_active = true;
1179 /* XXX select vce level based on ring/task */
1180 rdev->pm.dpm.vce_level = RADEON_VCE_LEVEL_AC_ALL;
1181 mutex_unlock(&rdev->pm.mutex);
1182 } else {
1183 mutex_lock(&rdev->pm.mutex);
1184 rdev->pm.dpm.vce_active = false;
1185 mutex_unlock(&rdev->pm.mutex);
1186 }
1187
1188 radeon_pm_compute_clocks(rdev);
1189 }
1190
1191 static void radeon_pm_suspend_old(struct radeon_device *rdev)
1192 {
1193 mutex_lock(&rdev->pm.mutex);
1194 if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1195 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE)
1196 rdev->pm.dynpm_state = DYNPM_STATE_SUSPENDED;
1197 }
1198 mutex_unlock(&rdev->pm.mutex);
1199
1200 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
1201 }
1202
1203 static void radeon_pm_suspend_dpm(struct radeon_device *rdev)
1204 {
1205 mutex_lock(&rdev->pm.mutex);
1206 /* disable dpm */
1207 radeon_dpm_disable(rdev);
1208 /* reset the power state */
1209 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1210 rdev->pm.dpm_enabled = false;
1211 mutex_unlock(&rdev->pm.mutex);
1212 }
1213
1214 void radeon_pm_suspend(struct radeon_device *rdev)
1215 {
1216 if (rdev->pm.pm_method == PM_METHOD_DPM)
1217 radeon_pm_suspend_dpm(rdev);
1218 else
1219 radeon_pm_suspend_old(rdev);
1220 }
1221
1222 static void radeon_pm_resume_old(struct radeon_device *rdev)
1223 {
1224 /* set up the default clocks if the MC ucode is loaded */
1225 if ((rdev->family >= CHIP_BARTS) &&
1226 (rdev->family <= CHIP_CAYMAN) &&
1227 rdev->mc_fw) {
1228 if (rdev->pm.default_vddc)
1229 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1230 SET_VOLTAGE_TYPE_ASIC_VDDC);
1231 if (rdev->pm.default_vddci)
1232 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1233 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1234 if (rdev->pm.default_sclk)
1235 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1236 if (rdev->pm.default_mclk)
1237 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1238 }
1239 /* asic init will reset the default power state */
1240 mutex_lock(&rdev->pm.mutex);
1241 rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
1242 rdev->pm.current_clock_mode_index = 0;
1243 rdev->pm.current_sclk = rdev->pm.default_sclk;
1244 rdev->pm.current_mclk = rdev->pm.default_mclk;
1245 if (rdev->pm.power_state) {
1246 rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
1247 rdev->pm.current_vddci = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.vddci;
1248 }
1249 if (rdev->pm.pm_method == PM_METHOD_DYNPM
1250 && rdev->pm.dynpm_state == DYNPM_STATE_SUSPENDED) {
1251 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1252 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1253 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1254 }
1255 mutex_unlock(&rdev->pm.mutex);
1256 radeon_pm_compute_clocks(rdev);
1257 }
1258
1259 static void radeon_pm_resume_dpm(struct radeon_device *rdev)
1260 {
1261 int ret;
1262
1263 /* asic init will reset to the boot state */
1264 mutex_lock(&rdev->pm.mutex);
1265 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1266 radeon_dpm_setup_asic(rdev);
1267 ret = radeon_dpm_enable(rdev);
1268 mutex_unlock(&rdev->pm.mutex);
1269 if (ret)
1270 goto dpm_resume_fail;
1271 rdev->pm.dpm_enabled = true;
1272 return;
1273
1274 dpm_resume_fail:
1275 DRM_ERROR("radeon: dpm resume failed\n");
1276 if ((rdev->family >= CHIP_BARTS) &&
1277 (rdev->family <= CHIP_CAYMAN) &&
1278 rdev->mc_fw) {
1279 if (rdev->pm.default_vddc)
1280 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1281 SET_VOLTAGE_TYPE_ASIC_VDDC);
1282 if (rdev->pm.default_vddci)
1283 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1284 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1285 if (rdev->pm.default_sclk)
1286 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1287 if (rdev->pm.default_mclk)
1288 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1289 }
1290 }
1291
1292 void radeon_pm_resume(struct radeon_device *rdev)
1293 {
1294 if (rdev->pm.pm_method == PM_METHOD_DPM)
1295 radeon_pm_resume_dpm(rdev);
1296 else
1297 radeon_pm_resume_old(rdev);
1298 }
1299
1300 static int radeon_pm_init_old(struct radeon_device *rdev)
1301 {
1302 int ret;
1303
1304 rdev->pm.profile = PM_PROFILE_DEFAULT;
1305 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
1306 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1307 rdev->pm.dynpm_can_upclock = true;
1308 rdev->pm.dynpm_can_downclock = true;
1309 rdev->pm.default_sclk = rdev->clock.default_sclk;
1310 rdev->pm.default_mclk = rdev->clock.default_mclk;
1311 rdev->pm.current_sclk = rdev->clock.default_sclk;
1312 rdev->pm.current_mclk = rdev->clock.default_mclk;
1313 rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
1314
1315 if (rdev->bios) {
1316 if (rdev->is_atom_bios)
1317 radeon_atombios_get_power_modes(rdev);
1318 else
1319 radeon_combios_get_power_modes(rdev);
1320 radeon_pm_print_states(rdev);
1321 radeon_pm_init_profile(rdev);
1322 /* set up the default clocks if the MC ucode is loaded */
1323 if ((rdev->family >= CHIP_BARTS) &&
1324 (rdev->family <= CHIP_CAYMAN) &&
1325 rdev->mc_fw) {
1326 if (rdev->pm.default_vddc)
1327 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1328 SET_VOLTAGE_TYPE_ASIC_VDDC);
1329 if (rdev->pm.default_vddci)
1330 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1331 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1332 if (rdev->pm.default_sclk)
1333 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1334 if (rdev->pm.default_mclk)
1335 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1336 }
1337 }
1338
1339 /* set up the internal thermal sensor if applicable */
1340 ret = radeon_hwmon_init(rdev);
1341 if (ret)
1342 return ret;
1343
1344 INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
1345
1346 if (rdev->pm.num_power_states > 1) {
1347 if (radeon_debugfs_pm_init(rdev)) {
1348 DRM_ERROR("Failed to register debugfs file for PM!\n");
1349 }
1350
1351 DRM_INFO("radeon: power management initialized\n");
1352 }
1353
1354 return 0;
1355 }
1356
1357 static void radeon_dpm_print_power_states(struct radeon_device *rdev)
1358 {
1359 int i;
1360
1361 for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
1362 printk("== power state %d ==\n", i);
1363 radeon_dpm_print_power_state(rdev, &rdev->pm.dpm.ps[i]);
1364 }
1365 }
1366
1367 static int radeon_pm_init_dpm(struct radeon_device *rdev)
1368 {
1369 int ret;
1370
1371 /* default to balanced state */
1372 rdev->pm.dpm.state = POWER_STATE_TYPE_BALANCED;
1373 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
1374 rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;
1375 rdev->pm.default_sclk = rdev->clock.default_sclk;
1376 rdev->pm.default_mclk = rdev->clock.default_mclk;
1377 rdev->pm.current_sclk = rdev->clock.default_sclk;
1378 rdev->pm.current_mclk = rdev->clock.default_mclk;
1379 rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
1380
1381 if (rdev->bios && rdev->is_atom_bios)
1382 radeon_atombios_get_power_modes(rdev);
1383 else
1384 return -EINVAL;
1385
1386 /* set up the internal thermal sensor if applicable */
1387 ret = radeon_hwmon_init(rdev);
1388 if (ret)
1389 return ret;
1390
1391 INIT_WORK(&rdev->pm.dpm.thermal.work, radeon_dpm_thermal_work_handler);
1392 mutex_lock(&rdev->pm.mutex);
1393 radeon_dpm_init(rdev);
1394 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1395 if (radeon_dpm == 1)
1396 radeon_dpm_print_power_states(rdev);
1397 radeon_dpm_setup_asic(rdev);
1398 ret = radeon_dpm_enable(rdev);
1399 mutex_unlock(&rdev->pm.mutex);
1400 if (ret)
1401 goto dpm_failed;
1402 rdev->pm.dpm_enabled = true;
1403
1404 if (radeon_debugfs_pm_init(rdev)) {
1405 DRM_ERROR("Failed to register debugfs file for dpm!\n");
1406 }
1407
1408 DRM_INFO("radeon: dpm initialized\n");
1409
1410 return 0;
1411
1412 dpm_failed:
1413 rdev->pm.dpm_enabled = false;
1414 if ((rdev->family >= CHIP_BARTS) &&
1415 (rdev->family <= CHIP_CAYMAN) &&
1416 rdev->mc_fw) {
1417 if (rdev->pm.default_vddc)
1418 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1419 SET_VOLTAGE_TYPE_ASIC_VDDC);
1420 if (rdev->pm.default_vddci)
1421 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1422 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1423 if (rdev->pm.default_sclk)
1424 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1425 if (rdev->pm.default_mclk)
1426 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1427 }
1428 DRM_ERROR("radeon: dpm initialization failed\n");
1429 return ret;
1430 }
1431
1432 struct radeon_dpm_quirk {
1433 u32 chip_vendor;
1434 u32 chip_device;
1435 u32 subsys_vendor;
1436 u32 subsys_device;
1437 };
1438
1439 /* cards with dpm stability problems */
1440 static struct radeon_dpm_quirk radeon_dpm_quirk_list[] = {
1441 /* TURKS - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386534 */
1442 { PCI_VENDOR_ID_ATI, 0x6759, 0x1682, 0x3195 },
1443 /* TURKS - https://bugzilla.kernel.org/show_bug.cgi?id=83731 */
1444 { PCI_VENDOR_ID_ATI, 0x6840, 0x1179, 0xfb81 },
1445 { 0, 0, 0, 0 },
1446 };
1447
1448 int radeon_pm_init(struct radeon_device *rdev)
1449 {
1450 struct radeon_dpm_quirk *p = radeon_dpm_quirk_list;
1451 bool disable_dpm = false;
1452
1453 /* Apply dpm quirks */
1454 while (p && p->chip_device != 0) {
1455 if (rdev->pdev->vendor == p->chip_vendor &&
1456 rdev->pdev->device == p->chip_device &&
1457 rdev->pdev->subsystem_vendor == p->subsys_vendor &&
1458 rdev->pdev->subsystem_device == p->subsys_device) {
1459 disable_dpm = true;
1460 break;
1461 }
1462 ++p;
1463 }
1464
1465 /* enable dpm on rv6xx+ */
1466 switch (rdev->family) {
1467 case CHIP_RV610:
1468 case CHIP_RV630:
1469 case CHIP_RV620:
1470 case CHIP_RV635:
1471 case CHIP_RV670:
1472 case CHIP_RS780:
1473 case CHIP_RS880:
1474 case CHIP_RV770:
1475 /* DPM requires the RLC, RV770+ dGPU requires SMC */
1476 if (!rdev->rlc_fw)
1477 rdev->pm.pm_method = PM_METHOD_PROFILE;
1478 else if ((rdev->family >= CHIP_RV770) &&
1479 (!(rdev->flags & RADEON_IS_IGP)) &&
1480 (!rdev->smc_fw))
1481 rdev->pm.pm_method = PM_METHOD_PROFILE;
1482 else if (radeon_dpm == 1)
1483 rdev->pm.pm_method = PM_METHOD_DPM;
1484 else
1485 rdev->pm.pm_method = PM_METHOD_PROFILE;
1486 break;
1487 case CHIP_RV730:
1488 case CHIP_RV710:
1489 case CHIP_RV740:
1490 case CHIP_CEDAR:
1491 case CHIP_REDWOOD:
1492 case CHIP_JUNIPER:
1493 case CHIP_CYPRESS:
1494 case CHIP_HEMLOCK:
1495 case CHIP_PALM:
1496 case CHIP_SUMO:
1497 case CHIP_SUMO2:
1498 case CHIP_BARTS:
1499 case CHIP_TURKS:
1500 case CHIP_CAICOS:
1501 case CHIP_CAYMAN:
1502 case CHIP_ARUBA:
1503 case CHIP_TAHITI:
1504 case CHIP_PITCAIRN:
1505 case CHIP_VERDE:
1506 case CHIP_OLAND:
1507 case CHIP_HAINAN:
1508 case CHIP_BONAIRE:
1509 case CHIP_KABINI:
1510 case CHIP_KAVERI:
1511 case CHIP_HAWAII:
1512 case CHIP_MULLINS:
1513 /* DPM requires the RLC, RV770+ dGPU requires SMC */
1514 if (!rdev->rlc_fw)
1515 rdev->pm.pm_method = PM_METHOD_PROFILE;
1516 else if ((rdev->family >= CHIP_RV770) &&
1517 (!(rdev->flags & RADEON_IS_IGP)) &&
1518 (!rdev->smc_fw))
1519 rdev->pm.pm_method = PM_METHOD_PROFILE;
1520 else if (disable_dpm && (radeon_dpm == -1))
1521 rdev->pm.pm_method = PM_METHOD_PROFILE;
1522 else if (radeon_dpm == 0)
1523 rdev->pm.pm_method = PM_METHOD_PROFILE;
1524 else
1525 rdev->pm.pm_method = PM_METHOD_DPM;
1526 break;
1527 default:
1528 /* default to profile method */
1529 rdev->pm.pm_method = PM_METHOD_PROFILE;
1530 break;
1531 }
1532
1533 if (rdev->pm.pm_method == PM_METHOD_DPM)
1534 return radeon_pm_init_dpm(rdev);
1535 else
1536 return radeon_pm_init_old(rdev);
1537 }
1538
1539 int radeon_pm_late_init(struct radeon_device *rdev)
1540 {
1541 int ret = 0;
1542
1543 if (rdev->pm.pm_method == PM_METHOD_DPM) {
1544 if (rdev->pm.dpm_enabled) {
1545 if (!rdev->pm.sysfs_initialized) {
1546 ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
1547 if (ret)
1548 DRM_ERROR("failed to create device file for dpm state\n");
1549 ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
1550 if (ret)
1551 DRM_ERROR("failed to create device file for dpm state\n");
1552 /* XXX: these are noops for dpm but are here for backwards compat */
1553 ret = device_create_file(rdev->dev, &dev_attr_power_profile);
1554 if (ret)
1555 DRM_ERROR("failed to create device file for power profile\n");
1556 ret = device_create_file(rdev->dev, &dev_attr_power_method);
1557 if (ret)
1558 DRM_ERROR("failed to create device file for power method\n");
1559 rdev->pm.sysfs_initialized = true;
1560 }
1561
1562 mutex_lock(&rdev->pm.mutex);
1563 ret = radeon_dpm_late_enable(rdev);
1564 mutex_unlock(&rdev->pm.mutex);
1565 if (ret) {
1566 rdev->pm.dpm_enabled = false;
1567 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1568 } else {
1569 /* set the dpm state for PX since there won't be
1570 * a modeset to call this.
1571 */
1572 radeon_pm_compute_clocks(rdev);
1573 }
1574 }
1575 } else {
1576 if ((rdev->pm.num_power_states > 1) &&
1577 (!rdev->pm.sysfs_initialized)) {
1578 /* where's the best place to put these? */
1579 ret = device_create_file(rdev->dev, &dev_attr_power_profile);
1580 if (ret)
1581 DRM_ERROR("failed to create device file for power profile\n");
1582 ret = device_create_file(rdev->dev, &dev_attr_power_method);
1583 if (ret)
1584 DRM_ERROR("failed to create device file for power method\n");
1585 if (!ret)
1586 rdev->pm.sysfs_initialized = true;
1587 }
1588 }
1589 return ret;
1590 }
1591
1592 static void radeon_pm_fini_old(struct radeon_device *rdev)
1593 {
1594 if (rdev->pm.num_power_states > 1) {
1595 mutex_lock(&rdev->pm.mutex);
1596 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
1597 rdev->pm.profile = PM_PROFILE_DEFAULT;
1598 radeon_pm_update_profile(rdev);
1599 radeon_pm_set_clocks(rdev);
1600 } else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1601 /* reset default clocks */
1602 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
1603 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
1604 radeon_pm_set_clocks(rdev);
1605 }
1606 mutex_unlock(&rdev->pm.mutex);
1607
1608 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
1609
1610 device_remove_file(rdev->dev, &dev_attr_power_profile);
1611 device_remove_file(rdev->dev, &dev_attr_power_method);
1612 }
1613
1614 radeon_hwmon_fini(rdev);
1615 kfree(rdev->pm.power_state);
1616 }
1617
1618 static void radeon_pm_fini_dpm(struct radeon_device *rdev)
1619 {
1620 if (rdev->pm.num_power_states > 1) {
1621 mutex_lock(&rdev->pm.mutex);
1622 radeon_dpm_disable(rdev);
1623 mutex_unlock(&rdev->pm.mutex);
1624
1625 device_remove_file(rdev->dev, &dev_attr_power_dpm_state);
1626 device_remove_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
1627 /* XXX backwards compat */
1628 device_remove_file(rdev->dev, &dev_attr_power_profile);
1629 device_remove_file(rdev->dev, &dev_attr_power_method);
1630 }
1631 radeon_dpm_fini(rdev);
1632
1633 radeon_hwmon_fini(rdev);
1634 kfree(rdev->pm.power_state);
1635 }
1636
1637 void radeon_pm_fini(struct radeon_device *rdev)
1638 {
1639 if (rdev->pm.pm_method == PM_METHOD_DPM)
1640 radeon_pm_fini_dpm(rdev);
1641 else
1642 radeon_pm_fini_old(rdev);
1643 }
1644
1645 static void radeon_pm_compute_clocks_old(struct radeon_device *rdev)
1646 {
1647 struct drm_device *ddev = rdev->ddev;
1648 struct drm_crtc *crtc;
1649 struct radeon_crtc *radeon_crtc;
1650
1651 if (rdev->pm.num_power_states < 2)
1652 return;
1653
1654 mutex_lock(&rdev->pm.mutex);
1655
1656 rdev->pm.active_crtcs = 0;
1657 rdev->pm.active_crtc_count = 0;
1658 if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
1659 list_for_each_entry(crtc,
1660 &ddev->mode_config.crtc_list, head) {
1661 radeon_crtc = to_radeon_crtc(crtc);
1662 if (radeon_crtc->enabled) {
1663 rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
1664 rdev->pm.active_crtc_count++;
1665 }
1666 }
1667 }
1668
1669 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
1670 radeon_pm_update_profile(rdev);
1671 radeon_pm_set_clocks(rdev);
1672 } else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1673 if (rdev->pm.dynpm_state != DYNPM_STATE_DISABLED) {
1674 if (rdev->pm.active_crtc_count > 1) {
1675 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
1676 cancel_delayed_work(&rdev->pm.dynpm_idle_work);
1677
1678 rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
1679 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
1680 radeon_pm_get_dynpm_state(rdev);
1681 radeon_pm_set_clocks(rdev);
1682
1683 DRM_DEBUG_DRIVER("radeon: dynamic power management deactivated\n");
1684 }
1685 } else if (rdev->pm.active_crtc_count == 1) {
1686 /* TODO: Increase clocks if needed for current mode */
1687
1688 if (rdev->pm.dynpm_state == DYNPM_STATE_MINIMUM) {
1689 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1690 rdev->pm.dynpm_planned_action = DYNPM_ACTION_UPCLOCK;
1691 radeon_pm_get_dynpm_state(rdev);
1692 radeon_pm_set_clocks(rdev);
1693
1694 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1695 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1696 } else if (rdev->pm.dynpm_state == DYNPM_STATE_PAUSED) {
1697 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1698 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1699 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1700 DRM_DEBUG_DRIVER("radeon: dynamic power management activated\n");
1701 }
1702 } else { /* count == 0 */
1703 if (rdev->pm.dynpm_state != DYNPM_STATE_MINIMUM) {
1704 cancel_delayed_work(&rdev->pm.dynpm_idle_work);
1705
1706 rdev->pm.dynpm_state = DYNPM_STATE_MINIMUM;
1707 rdev->pm.dynpm_planned_action = DYNPM_ACTION_MINIMUM;
1708 radeon_pm_get_dynpm_state(rdev);
1709 radeon_pm_set_clocks(rdev);
1710 }
1711 }
1712 }
1713 }
1714
1715 mutex_unlock(&rdev->pm.mutex);
1716 }
1717
1718 static void radeon_pm_compute_clocks_dpm(struct radeon_device *rdev)
1719 {
1720 struct drm_device *ddev = rdev->ddev;
1721 struct drm_crtc *crtc;
1722 struct radeon_crtc *radeon_crtc;
1723
1724 if (!rdev->pm.dpm_enabled)
1725 return;
1726
1727 mutex_lock(&rdev->pm.mutex);
1728
1729 /* update active crtc counts */
1730 rdev->pm.dpm.new_active_crtcs = 0;
1731 rdev->pm.dpm.new_active_crtc_count = 0;
1732 if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
1733 list_for_each_entry(crtc,
1734 &ddev->mode_config.crtc_list, head) {
1735 radeon_crtc = to_radeon_crtc(crtc);
1736 if (crtc->enabled) {
1737 rdev->pm.dpm.new_active_crtcs |= (1 << radeon_crtc->crtc_id);
1738 rdev->pm.dpm.new_active_crtc_count++;
1739 }
1740 }
1741 }
1742
1743 /* update battery/ac status */
1744 if (power_supply_is_system_supplied() > 0)
1745 rdev->pm.dpm.ac_power = true;
1746 else
1747 rdev->pm.dpm.ac_power = false;
1748
1749 radeon_dpm_change_power_state_locked(rdev);
1750
1751 mutex_unlock(&rdev->pm.mutex);
1752
1753 }
1754
1755 void radeon_pm_compute_clocks(struct radeon_device *rdev)
1756 {
1757 if (rdev->pm.pm_method == PM_METHOD_DPM)
1758 radeon_pm_compute_clocks_dpm(rdev);
1759 else
1760 radeon_pm_compute_clocks_old(rdev);
1761 }
1762
1763 static bool radeon_pm_in_vbl(struct radeon_device *rdev)
1764 {
1765 int crtc, vpos, hpos, vbl_status;
1766 bool in_vbl = true;
1767
1768 /* Iterate over all active crtc's. All crtc's must be in vblank,
1769 * otherwise return in_vbl == false.
1770 */
1771 for (crtc = 0; (crtc < rdev->num_crtc) && in_vbl; crtc++) {
1772 if (rdev->pm.active_crtcs & (1 << crtc)) {
1773 vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev,
1774 crtc,
1775 USE_REAL_VBLANKSTART,
1776 &vpos, &hpos, NULL, NULL,
1777 &rdev->mode_info.crtcs[crtc]->base.hwmode);
1778 if ((vbl_status & DRM_SCANOUTPOS_VALID) &&
1779 !(vbl_status & DRM_SCANOUTPOS_IN_VBLANK))
1780 in_vbl = false;
1781 }
1782 }
1783
1784 return in_vbl;
1785 }
1786
1787 static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
1788 {
1789 u32 stat_crtc = 0;
1790 bool in_vbl = radeon_pm_in_vbl(rdev);
1791
1792 if (!in_vbl)
1793 DRM_DEBUG_DRIVER("not in vbl for pm change %08x at %s\n", stat_crtc,
1794 finish ? "exit" : "entry");
1795 return in_vbl;
1796 }
1797
1798 static void radeon_dynpm_idle_work_handler(struct work_struct *work)
1799 {
1800 struct radeon_device *rdev;
1801 int resched;
1802 rdev = container_of(work, struct radeon_device,
1803 pm.dynpm_idle_work.work);
1804
1805 resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
1806 mutex_lock(&rdev->pm.mutex);
1807 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
1808 int not_processed = 0;
1809 int i;
1810
1811 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1812 struct radeon_ring *ring = &rdev->ring[i];
1813
1814 if (ring->ready) {
1815 not_processed += radeon_fence_count_emitted(rdev, i);
1816 if (not_processed >= 3)
1817 break;
1818 }
1819 }
1820
1821 if (not_processed >= 3) { /* should upclock */
1822 if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_DOWNCLOCK) {
1823 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1824 } else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
1825 rdev->pm.dynpm_can_upclock) {
1826 rdev->pm.dynpm_planned_action =
1827 DYNPM_ACTION_UPCLOCK;
1828 rdev->pm.dynpm_action_timeout = jiffies +
1829 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
1830 }
1831 } else if (not_processed == 0) { /* should downclock */
1832 if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_UPCLOCK) {
1833 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1834 } else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
1835 rdev->pm.dynpm_can_downclock) {
1836 rdev->pm.dynpm_planned_action =
1837 DYNPM_ACTION_DOWNCLOCK;
1838 rdev->pm.dynpm_action_timeout = jiffies +
1839 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
1840 }
1841 }
1842
1843 /* Note, radeon_pm_set_clocks is called with static_switch set
1844 * to false since we want to wait for vbl to avoid flicker.
1845 */
1846 if (rdev->pm.dynpm_planned_action != DYNPM_ACTION_NONE &&
1847 jiffies > rdev->pm.dynpm_action_timeout) {
1848 radeon_pm_get_dynpm_state(rdev);
1849 radeon_pm_set_clocks(rdev);
1850 }
1851
1852 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1853 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1854 }
1855 mutex_unlock(&rdev->pm.mutex);
1856 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
1857 }
1858
1859 /*
1860 * Debugfs info
1861 */
1862 #if defined(CONFIG_DEBUG_FS)
1863
1864 static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
1865 {
1866 struct drm_info_node *node = (struct drm_info_node *) m->private;
1867 struct drm_device *dev = node->minor->dev;
1868 struct radeon_device *rdev = dev->dev_private;
1869 struct drm_device *ddev = rdev->ddev;
1870
1871 if ((rdev->flags & RADEON_IS_PX) &&
1872 (ddev->switch_power_state != DRM_SWITCH_POWER_ON)) {
1873 seq_printf(m, "PX asic powered off\n");
1874 } else if (rdev->pm.dpm_enabled) {
1875 mutex_lock(&rdev->pm.mutex);
1876 if (rdev->asic->dpm.debugfs_print_current_performance_level)
1877 radeon_dpm_debugfs_print_current_performance_level(rdev, m);
1878 else
1879 seq_printf(m, "Debugfs support not implemented for this asic\n");
1880 mutex_unlock(&rdev->pm.mutex);
1881 } else {
1882 seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);
1883 /* radeon_get_engine_clock is not reliable on APUs so just print the current clock */
1884 if ((rdev->family >= CHIP_PALM) && (rdev->flags & RADEON_IS_IGP))
1885 seq_printf(m, "current engine clock: %u0 kHz\n", rdev->pm.current_sclk);
1886 else
1887 seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
1888 seq_printf(m, "default memory clock: %u0 kHz\n", rdev->pm.default_mclk);
1889 if (rdev->asic->pm.get_memory_clock)
1890 seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
1891 if (rdev->pm.current_vddc)
1892 seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);
1893 if (rdev->asic->pm.get_pcie_lanes)
1894 seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
1895 }
1896
1897 return 0;
1898 }
1899
1900 static struct drm_info_list radeon_pm_info_list[] = {
1901 {"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
1902 };
1903 #endif
1904
1905 static int radeon_debugfs_pm_init(struct radeon_device *rdev)
1906 {
1907 #if defined(CONFIG_DEBUG_FS)
1908 return radeon_debugfs_add_files(rdev, radeon_pm_info_list, ARRAY_SIZE(radeon_pm_info_list));
1909 #else
1910 return 0;
1911 #endif
1912 }
Linux with added FPC-III support