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23#include <drm/drmP.h>
24#include "radeon.h"
25#include "avivod.h"
26#include "atom.h"
27#include <linux/power_supply.h>
28#include <linux/hwmon.h>
29#include <linux/hwmon-sysfs.h>
30
31#define RADEON_IDLE_LOOP_MS 100
32#define RADEON_RECLOCK_DELAY_MS 200
33#define RADEON_WAIT_VBLANK_TIMEOUT 200
34
35static const char *radeon_pm_state_type_name[5] = {
36 "",
37 "Powersave",
38 "Battery",
39 "Balanced",
40 "Performance",
41};
42
43static void radeon_dynpm_idle_work_handler(struct work_struct *work);
44static int radeon_debugfs_pm_init(struct radeon_device *rdev);
45static bool radeon_pm_in_vbl(struct radeon_device *rdev);
46static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish);
47static void radeon_pm_update_profile(struct radeon_device *rdev);
48static void radeon_pm_set_clocks(struct radeon_device *rdev);
49
50int radeon_pm_get_type_index(struct radeon_device *rdev,
51 enum radeon_pm_state_type ps_type,
52 int instance)
53{
54 int i;
55 int found_instance = -1;
56
57 for (i = 0; i < rdev->pm.num_power_states; i++) {
58 if (rdev->pm.power_state[i].type == ps_type) {
59 found_instance++;
60 if (found_instance == instance)
61 return i;
62 }
63 }
64
65 return rdev->pm.default_power_state_index;
66}
67
68void radeon_pm_acpi_event_handler(struct radeon_device *rdev)
69{
70 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
71 mutex_lock(&rdev->pm.mutex);
72 if (power_supply_is_system_supplied() > 0)
73 rdev->pm.dpm.ac_power = true;
74 else
75 rdev->pm.dpm.ac_power = false;
76 if (rdev->asic->dpm.enable_bapm)
77 radeon_dpm_enable_bapm(rdev, rdev->pm.dpm.ac_power);
78 mutex_unlock(&rdev->pm.mutex);
79 } else if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
80 if (rdev->pm.profile == PM_PROFILE_AUTO) {
81 mutex_lock(&rdev->pm.mutex);
82 radeon_pm_update_profile(rdev);
83 radeon_pm_set_clocks(rdev);
84 mutex_unlock(&rdev->pm.mutex);
85 }
86 }
87}
88
89static void radeon_pm_update_profile(struct radeon_device *rdev)
90{
91 switch (rdev->pm.profile) {
92 case PM_PROFILE_DEFAULT:
93 rdev->pm.profile_index = PM_PROFILE_DEFAULT_IDX;
94 break;
95 case PM_PROFILE_AUTO:
96 if (power_supply_is_system_supplied() > 0) {
97 if (rdev->pm.active_crtc_count > 1)
98 rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
99 else
100 rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
101 } else {
102 if (rdev->pm.active_crtc_count > 1)
103 rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
104 else
105 rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
106 }
107 break;
108 case PM_PROFILE_LOW:
109 if (rdev->pm.active_crtc_count > 1)
110 rdev->pm.profile_index = PM_PROFILE_LOW_MH_IDX;
111 else
112 rdev->pm.profile_index = PM_PROFILE_LOW_SH_IDX;
113 break;
114 case PM_PROFILE_MID:
115 if (rdev->pm.active_crtc_count > 1)
116 rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
117 else
118 rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
119 break;
120 case PM_PROFILE_HIGH:
121 if (rdev->pm.active_crtc_count > 1)
122 rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
123 else
124 rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
125 break;
126 }
127
128 if (rdev->pm.active_crtc_count == 0) {
129 rdev->pm.requested_power_state_index =
130 rdev->pm.profiles[rdev->pm.profile_index].dpms_off_ps_idx;
131 rdev->pm.requested_clock_mode_index =
132 rdev->pm.profiles[rdev->pm.profile_index].dpms_off_cm_idx;
133 } else {
134 rdev->pm.requested_power_state_index =
135 rdev->pm.profiles[rdev->pm.profile_index].dpms_on_ps_idx;
136 rdev->pm.requested_clock_mode_index =
137 rdev->pm.profiles[rdev->pm.profile_index].dpms_on_cm_idx;
138 }
139}
140
141static void radeon_unmap_vram_bos(struct radeon_device *rdev)
142{
143 struct radeon_bo *bo, *n;
144
145 if (list_empty(&rdev->gem.objects))
146 return;
147
148 list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
149 if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
150 ttm_bo_unmap_virtual(&bo->tbo);
151 }
152}
153
154static void radeon_sync_with_vblank(struct radeon_device *rdev)
155{
156 if (rdev->pm.active_crtcs) {
157 rdev->pm.vblank_sync = false;
158 wait_event_timeout(
159 rdev->irq.vblank_queue, rdev->pm.vblank_sync,
160 msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
161 }
162}
163
164static void radeon_set_power_state(struct radeon_device *rdev)
165{
166 u32 sclk, mclk;
167 bool misc_after = false;
168
169 if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
170 (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
171 return;
172
173 if (radeon_gui_idle(rdev)) {
174 sclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
175 clock_info[rdev->pm.requested_clock_mode_index].sclk;
176 if (sclk > rdev->pm.default_sclk)
177 sclk = rdev->pm.default_sclk;
178
179
180
181
182
183 if ((rdev->pm.pm_method == PM_METHOD_PROFILE) &&
184 (rdev->family >= CHIP_BARTS) &&
185 rdev->pm.active_crtc_count &&
186 ((rdev->pm.profile_index == PM_PROFILE_MID_MH_IDX) ||
187 (rdev->pm.profile_index == PM_PROFILE_LOW_MH_IDX)))
188 mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
189 clock_info[rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx].mclk;
190 else
191 mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
192 clock_info[rdev->pm.requested_clock_mode_index].mclk;
193
194 if (mclk > rdev->pm.default_mclk)
195 mclk = rdev->pm.default_mclk;
196
197
198 if (sclk < rdev->pm.current_sclk)
199 misc_after = true;
200
201 radeon_sync_with_vblank(rdev);
202
203 if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
204 if (!radeon_pm_in_vbl(rdev))
205 return;
206 }
207
208 radeon_pm_prepare(rdev);
209
210 if (!misc_after)
211
212 radeon_pm_misc(rdev);
213
214
215 if (sclk != rdev->pm.current_sclk) {
216 radeon_pm_debug_check_in_vbl(rdev, false);
217 radeon_set_engine_clock(rdev, sclk);
218 radeon_pm_debug_check_in_vbl(rdev, true);
219 rdev->pm.current_sclk = sclk;
220 DRM_DEBUG_DRIVER("Setting: e: %d\n", sclk);
221 }
222
223
224 if (rdev->asic->pm.set_memory_clock && (mclk != rdev->pm.current_mclk)) {
225 radeon_pm_debug_check_in_vbl(rdev, false);
226 radeon_set_memory_clock(rdev, mclk);
227 radeon_pm_debug_check_in_vbl(rdev, true);
228 rdev->pm.current_mclk = mclk;
229 DRM_DEBUG_DRIVER("Setting: m: %d\n", mclk);
230 }
231
232 if (misc_after)
233
234 radeon_pm_misc(rdev);
235
236 radeon_pm_finish(rdev);
237
238 rdev->pm.current_power_state_index = rdev->pm.requested_power_state_index;
239 rdev->pm.current_clock_mode_index = rdev->pm.requested_clock_mode_index;
240 } else
241 DRM_DEBUG_DRIVER("pm: GUI not idle!!!\n");
242}
243
244static void radeon_pm_set_clocks(struct radeon_device *rdev)
245{
246 int i, r;
247
248
249 if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
250 (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
251 return;
252
253 mutex_lock(&rdev->ddev->struct_mutex);
254 down_write(&rdev->pm.mclk_lock);
255 mutex_lock(&rdev->ring_lock);
256
257
258 for (i = 0; i < RADEON_NUM_RINGS; i++) {
259 struct radeon_ring *ring = &rdev->ring[i];
260 if (!ring->ready) {
261 continue;
262 }
263 r = radeon_fence_wait_empty_locked(rdev, i);
264 if (r) {
265
266 mutex_unlock(&rdev->ring_lock);
267 up_write(&rdev->pm.mclk_lock);
268 mutex_unlock(&rdev->ddev->struct_mutex);
269 return;
270 }
271 }
272
273 radeon_unmap_vram_bos(rdev);
274
275 if (rdev->irq.installed) {
276 for (i = 0; i < rdev->num_crtc; i++) {
277 if (rdev->pm.active_crtcs & (1 << i)) {
278 rdev->pm.req_vblank |= (1 << i);
279 drm_vblank_get(rdev->ddev, i);
280 }
281 }
282 }
283
284 radeon_set_power_state(rdev);
285
286 if (rdev->irq.installed) {
287 for (i = 0; i < rdev->num_crtc; i++) {
288 if (rdev->pm.req_vblank & (1 << i)) {
289 rdev->pm.req_vblank &= ~(1 << i);
290 drm_vblank_put(rdev->ddev, i);
291 }
292 }
293 }
294
295
296 radeon_update_bandwidth_info(rdev);
297 if (rdev->pm.active_crtc_count)
298 radeon_bandwidth_update(rdev);
299
300 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
301
302 mutex_unlock(&rdev->ring_lock);
303 up_write(&rdev->pm.mclk_lock);
304 mutex_unlock(&rdev->ddev->struct_mutex);
305}
306
307static 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
341static 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
356static 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 mutex_lock(&rdev->pm.mutex);
365 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
366 if (strncmp("default", buf, strlen("default")) == 0)
367 rdev->pm.profile = PM_PROFILE_DEFAULT;
368 else if (strncmp("auto", buf, strlen("auto")) == 0)
369 rdev->pm.profile = PM_PROFILE_AUTO;
370 else if (strncmp("low", buf, strlen("low")) == 0)
371 rdev->pm.profile = PM_PROFILE_LOW;
372 else if (strncmp("mid", buf, strlen("mid")) == 0)
373 rdev->pm.profile = PM_PROFILE_MID;
374 else if (strncmp("high", buf, strlen("high")) == 0)
375 rdev->pm.profile = PM_PROFILE_HIGH;
376 else {
377 count = -EINVAL;
378 goto fail;
379 }
380 radeon_pm_update_profile(rdev);
381 radeon_pm_set_clocks(rdev);
382 } else
383 count = -EINVAL;
384
385fail:
386 mutex_unlock(&rdev->pm.mutex);
387
388 return count;
389}
390
391static ssize_t radeon_get_pm_method(struct device *dev,
392 struct device_attribute *attr,
393 char *buf)
394{
395 struct drm_device *ddev = dev_get_drvdata(dev);
396 struct radeon_device *rdev = ddev->dev_private;
397 int pm = rdev->pm.pm_method;
398
399 return snprintf(buf, PAGE_SIZE, "%s\n",
400 (pm == PM_METHOD_DYNPM) ? "dynpm" :
401 (pm == PM_METHOD_PROFILE) ? "profile" : "dpm");
402}
403
404static ssize_t radeon_set_pm_method(struct device *dev,
405 struct device_attribute *attr,
406 const char *buf,
407 size_t count)
408{
409 struct drm_device *ddev = dev_get_drvdata(dev);
410 struct radeon_device *rdev = ddev->dev_private;
411
412
413 if (rdev->pm.pm_method == PM_METHOD_DPM) {
414 count = -EINVAL;
415 goto fail;
416 }
417
418 if (strncmp("dynpm", buf, strlen("dynpm")) == 0) {
419 mutex_lock(&rdev->pm.mutex);
420 rdev->pm.pm_method = PM_METHOD_DYNPM;
421 rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
422 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
423 mutex_unlock(&rdev->pm.mutex);
424 } else if (strncmp("profile", buf, strlen("profile")) == 0) {
425 mutex_lock(&rdev->pm.mutex);
426
427 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
428 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
429 rdev->pm.pm_method = PM_METHOD_PROFILE;
430 mutex_unlock(&rdev->pm.mutex);
431 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
432 } else {
433 count = -EINVAL;
434 goto fail;
435 }
436 radeon_pm_compute_clocks(rdev);
437fail:
438 return count;
439}
440
441static ssize_t radeon_get_dpm_state(struct device *dev,
442 struct device_attribute *attr,
443 char *buf)
444{
445 struct drm_device *ddev = dev_get_drvdata(dev);
446 struct radeon_device *rdev = ddev->dev_private;
447 enum radeon_pm_state_type pm = rdev->pm.dpm.user_state;
448
449 return snprintf(buf, PAGE_SIZE, "%s\n",
450 (pm == POWER_STATE_TYPE_BATTERY) ? "battery" :
451 (pm == POWER_STATE_TYPE_BALANCED) ? "balanced" : "performance");
452}
453
454static ssize_t radeon_set_dpm_state(struct device *dev,
455 struct device_attribute *attr,
456 const char *buf,
457 size_t count)
458{
459 struct drm_device *ddev = dev_get_drvdata(dev);
460 struct radeon_device *rdev = ddev->dev_private;
461
462 mutex_lock(&rdev->pm.mutex);
463 if (strncmp("battery", buf, strlen("battery")) == 0)
464 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BATTERY;
465 else if (strncmp("balanced", buf, strlen("balanced")) == 0)
466 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
467 else if (strncmp("performance", buf, strlen("performance")) == 0)
468 rdev->pm.dpm.user_state = POWER_STATE_TYPE_PERFORMANCE;
469 else {
470 mutex_unlock(&rdev->pm.mutex);
471 count = -EINVAL;
472 goto fail;
473 }
474 mutex_unlock(&rdev->pm.mutex);
475 radeon_pm_compute_clocks(rdev);
476fail:
477 return count;
478}
479
480static ssize_t radeon_get_dpm_forced_performance_level(struct device *dev,
481 struct device_attribute *attr,
482 char *buf)
483{
484 struct drm_device *ddev = dev_get_drvdata(dev);
485 struct radeon_device *rdev = ddev->dev_private;
486 enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level;
487
488 return snprintf(buf, PAGE_SIZE, "%s\n",
489 (level == RADEON_DPM_FORCED_LEVEL_AUTO) ? "auto" :
490 (level == RADEON_DPM_FORCED_LEVEL_LOW) ? "low" : "high");
491}
492
493static ssize_t radeon_set_dpm_forced_performance_level(struct device *dev,
494 struct device_attribute *attr,
495 const char *buf,
496 size_t count)
497{
498 struct drm_device *ddev = dev_get_drvdata(dev);
499 struct radeon_device *rdev = ddev->dev_private;
500 enum radeon_dpm_forced_level level;
501 int ret = 0;
502
503 mutex_lock(&rdev->pm.mutex);
504 if (strncmp("low", buf, strlen("low")) == 0) {
505 level = RADEON_DPM_FORCED_LEVEL_LOW;
506 } else if (strncmp("high", buf, strlen("high")) == 0) {
507 level = RADEON_DPM_FORCED_LEVEL_HIGH;
508 } else if (strncmp("auto", buf, strlen("auto")) == 0) {
509 level = RADEON_DPM_FORCED_LEVEL_AUTO;
510 } else {
511 mutex_unlock(&rdev->pm.mutex);
512 count = -EINVAL;
513 goto fail;
514 }
515 if (rdev->asic->dpm.force_performance_level) {
516 ret = radeon_dpm_force_performance_level(rdev, level);
517 if (ret)
518 count = -EINVAL;
519 }
520 mutex_unlock(&rdev->pm.mutex);
521fail:
522 return count;
523}
524
525static DEVICE_ATTR(power_profile, S_IRUGO | S_IWUSR, radeon_get_pm_profile, radeon_set_pm_profile);
526static DEVICE_ATTR(power_method, S_IRUGO | S_IWUSR, radeon_get_pm_method, radeon_set_pm_method);
527static DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, radeon_get_dpm_state, radeon_set_dpm_state);
528static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR,
529 radeon_get_dpm_forced_performance_level,
530 radeon_set_dpm_forced_performance_level);
531
532static ssize_t radeon_hwmon_show_temp(struct device *dev,
533 struct device_attribute *attr,
534 char *buf)
535{
536 struct drm_device *ddev = dev_get_drvdata(dev);
537 struct radeon_device *rdev = ddev->dev_private;
538 int temp;
539
540 if (rdev->asic->pm.get_temperature)
541 temp = radeon_get_temperature(rdev);
542 else
543 temp = 0;
544
545 return snprintf(buf, PAGE_SIZE, "%d\n", temp);
546}
547
548static ssize_t radeon_hwmon_show_temp_thresh(struct device *dev,
549 struct device_attribute *attr,
550 char *buf)
551{
552 struct drm_device *ddev = dev_get_drvdata(dev);
553 struct radeon_device *rdev = ddev->dev_private;
554 int hyst = to_sensor_dev_attr(attr)->index;
555 int temp;
556
557 if (hyst)
558 temp = rdev->pm.dpm.thermal.min_temp;
559 else
560 temp = rdev->pm.dpm.thermal.max_temp;
561
562 return snprintf(buf, PAGE_SIZE, "%d\n", temp);
563}
564
565static ssize_t radeon_hwmon_show_name(struct device *dev,
566 struct device_attribute *attr,
567 char *buf)
568{
569 return sprintf(buf, "radeon\n");
570}
571
572static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, radeon_hwmon_show_temp, NULL, 0);
573static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, radeon_hwmon_show_temp_thresh, NULL, 0);
574static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, radeon_hwmon_show_temp_thresh, NULL, 1);
575static SENSOR_DEVICE_ATTR(name, S_IRUGO, radeon_hwmon_show_name, NULL, 0);
576
577static struct attribute *hwmon_attributes[] = {
578 &sensor_dev_attr_temp1_input.dev_attr.attr,
579 &sensor_dev_attr_temp1_crit.dev_attr.attr,
580 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
581 &sensor_dev_attr_name.dev_attr.attr,
582 NULL
583};
584
585static umode_t hwmon_attributes_visible(struct kobject *kobj,
586 struct attribute *attr, int index)
587{
588 struct device *dev = container_of(kobj, struct device, kobj);
589 struct drm_device *ddev = dev_get_drvdata(dev);
590 struct radeon_device *rdev = ddev->dev_private;
591
592
593 if (rdev->pm.pm_method != PM_METHOD_DPM &&
594 (attr == &sensor_dev_attr_temp1_crit.dev_attr.attr ||
595 attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr))
596 return 0;
597
598 return attr->mode;
599}
600
601static const struct attribute_group hwmon_attrgroup = {
602 .attrs = hwmon_attributes,
603 .is_visible = hwmon_attributes_visible,
604};
605
606static int radeon_hwmon_init(struct radeon_device *rdev)
607{
608 int err = 0;
609
610 rdev->pm.int_hwmon_dev = NULL;
611
612 switch (rdev->pm.int_thermal_type) {
613 case THERMAL_TYPE_RV6XX:
614 case THERMAL_TYPE_RV770:
615 case THERMAL_TYPE_EVERGREEN:
616 case THERMAL_TYPE_NI:
617 case THERMAL_TYPE_SUMO:
618 case THERMAL_TYPE_SI:
619 case THERMAL_TYPE_CI:
620 case THERMAL_TYPE_KV:
621 if (rdev->asic->pm.get_temperature == NULL)
622 return err;
623 rdev->pm.int_hwmon_dev = hwmon_device_register(rdev->dev);
624 if (IS_ERR(rdev->pm.int_hwmon_dev)) {
625 err = PTR_ERR(rdev->pm.int_hwmon_dev);
626 dev_err(rdev->dev,
627 "Unable to register hwmon device: %d\n", err);
628 break;
629 }
630 dev_set_drvdata(rdev->pm.int_hwmon_dev, rdev->ddev);
631 err = sysfs_create_group(&rdev->pm.int_hwmon_dev->kobj,
632 &hwmon_attrgroup);
633 if (err) {
634 dev_err(rdev->dev,
635 "Unable to create hwmon sysfs file: %d\n", err);
636 hwmon_device_unregister(rdev->dev);
637 }
638 break;
639 default:
640 break;
641 }
642
643 return err;
644}
645
646static void radeon_hwmon_fini(struct radeon_device *rdev)
647{
648 if (rdev->pm.int_hwmon_dev) {
649 sysfs_remove_group(&rdev->pm.int_hwmon_dev->kobj, &hwmon_attrgroup);
650 hwmon_device_unregister(rdev->pm.int_hwmon_dev);
651 }
652}
653
654static void radeon_dpm_thermal_work_handler(struct work_struct *work)
655{
656 struct radeon_device *rdev =
657 container_of(work, struct radeon_device,
658 pm.dpm.thermal.work);
659
660 enum radeon_pm_state_type dpm_state = POWER_STATE_TYPE_INTERNAL_THERMAL;
661
662 if (!rdev->pm.dpm_enabled)
663 return;
664
665 if (rdev->asic->pm.get_temperature) {
666 int temp = radeon_get_temperature(rdev);
667
668 if (temp < rdev->pm.dpm.thermal.min_temp)
669
670 dpm_state = rdev->pm.dpm.user_state;
671 } else {
672 if (rdev->pm.dpm.thermal.high_to_low)
673
674 dpm_state = rdev->pm.dpm.user_state;
675 }
676 mutex_lock(&rdev->pm.mutex);
677 if (dpm_state == POWER_STATE_TYPE_INTERNAL_THERMAL)
678 rdev->pm.dpm.thermal_active = true;
679 else
680 rdev->pm.dpm.thermal_active = false;
681 rdev->pm.dpm.state = dpm_state;
682 mutex_unlock(&rdev->pm.mutex);
683
684 radeon_pm_compute_clocks(rdev);
685}
686
687static struct radeon_ps *radeon_dpm_pick_power_state(struct radeon_device *rdev,
688 enum radeon_pm_state_type dpm_state)
689{
690 int i;
691 struct radeon_ps *ps;
692 u32 ui_class;
693 bool single_display = (rdev->pm.dpm.new_active_crtc_count < 2) ?
694 true : false;
695
696
697 if (single_display && rdev->asic->dpm.vblank_too_short) {
698 if (radeon_dpm_vblank_too_short(rdev))
699 single_display = false;
700 }
701
702
703
704
705 if (dpm_state == POWER_STATE_TYPE_PERFORMANCE)
706 dpm_state = POWER_STATE_TYPE_INTERNAL_3DPERF;
707
708 if (dpm_state == POWER_STATE_TYPE_BALANCED)
709 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
710
711restart_search:
712
713 for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
714 ps = &rdev->pm.dpm.ps[i];
715 ui_class = ps->class & ATOM_PPLIB_CLASSIFICATION_UI_MASK;
716 switch (dpm_state) {
717
718 case POWER_STATE_TYPE_BATTERY:
719 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BATTERY) {
720 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
721 if (single_display)
722 return ps;
723 } else
724 return ps;
725 }
726 break;
727 case POWER_STATE_TYPE_BALANCED:
728 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BALANCED) {
729 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
730 if (single_display)
731 return ps;
732 } else
733 return ps;
734 }
735 break;
736 case POWER_STATE_TYPE_PERFORMANCE:
737 if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE) {
738 if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
739 if (single_display)
740 return ps;
741 } else
742 return ps;
743 }
744 break;
745
746 case POWER_STATE_TYPE_INTERNAL_UVD:
747 if (rdev->pm.dpm.uvd_ps)
748 return rdev->pm.dpm.uvd_ps;
749 else
750 break;
751 case POWER_STATE_TYPE_INTERNAL_UVD_SD:
752 if (ps->class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
753 return ps;
754 break;
755 case POWER_STATE_TYPE_INTERNAL_UVD_HD:
756 if (ps->class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
757 return ps;
758 break;
759 case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
760 if (ps->class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
761 return ps;
762 break;
763 case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
764 if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
765 return ps;
766 break;
767 case POWER_STATE_TYPE_INTERNAL_BOOT:
768 return rdev->pm.dpm.boot_ps;
769 case POWER_STATE_TYPE_INTERNAL_THERMAL:
770 if (ps->class & ATOM_PPLIB_CLASSIFICATION_THERMAL)
771 return ps;
772 break;
773 case POWER_STATE_TYPE_INTERNAL_ACPI:
774 if (ps->class & ATOM_PPLIB_CLASSIFICATION_ACPI)
775 return ps;
776 break;
777 case POWER_STATE_TYPE_INTERNAL_ULV:
778 if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_ULV)
779 return ps;
780 break;
781 case POWER_STATE_TYPE_INTERNAL_3DPERF:
782 if (ps->class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE)
783 return ps;
784 break;
785 default:
786 break;
787 }
788 }
789
790 switch (dpm_state) {
791 case POWER_STATE_TYPE_INTERNAL_UVD_SD:
792 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
793 goto restart_search;
794 case POWER_STATE_TYPE_INTERNAL_UVD_HD:
795 case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
796 case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
797 if (rdev->pm.dpm.uvd_ps) {
798 return rdev->pm.dpm.uvd_ps;
799 } else {
800 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
801 goto restart_search;
802 }
803 case POWER_STATE_TYPE_INTERNAL_THERMAL:
804 dpm_state = POWER_STATE_TYPE_INTERNAL_ACPI;
805 goto restart_search;
806 case POWER_STATE_TYPE_INTERNAL_ACPI:
807 dpm_state = POWER_STATE_TYPE_BATTERY;
808 goto restart_search;
809 case POWER_STATE_TYPE_BATTERY:
810 case POWER_STATE_TYPE_BALANCED:
811 case POWER_STATE_TYPE_INTERNAL_3DPERF:
812 dpm_state = POWER_STATE_TYPE_PERFORMANCE;
813 goto restart_search;
814 default:
815 break;
816 }
817
818 return NULL;
819}
820
821static void radeon_dpm_change_power_state_locked(struct radeon_device *rdev)
822{
823 int i;
824 struct radeon_ps *ps;
825 enum radeon_pm_state_type dpm_state;
826 int ret;
827
828
829 if (!rdev->pm.dpm_enabled)
830 return;
831
832 if (rdev->pm.dpm.user_state != rdev->pm.dpm.state) {
833
834 if ((!rdev->pm.dpm.thermal_active) &&
835 (!rdev->pm.dpm.uvd_active))
836 rdev->pm.dpm.state = rdev->pm.dpm.user_state;
837 }
838 dpm_state = rdev->pm.dpm.state;
839
840 ps = radeon_dpm_pick_power_state(rdev, dpm_state);
841 if (ps)
842 rdev->pm.dpm.requested_ps = ps;
843 else
844 return;
845
846
847 if (rdev->pm.dpm.current_ps == rdev->pm.dpm.requested_ps) {
848 if ((rdev->family < CHIP_BARTS) || (rdev->flags & RADEON_IS_IGP)) {
849
850
851
852 if (rdev->pm.dpm.new_active_crtcs != rdev->pm.dpm.current_active_crtcs) {
853
854 radeon_bandwidth_update(rdev);
855
856 radeon_dpm_display_configuration_changed(rdev);
857 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
858 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
859 }
860 return;
861 } else {
862
863
864
865
866 if (rdev->pm.dpm.new_active_crtcs ==
867 rdev->pm.dpm.current_active_crtcs) {
868 return;
869 } else {
870 if ((rdev->pm.dpm.current_active_crtc_count > 1) &&
871 (rdev->pm.dpm.new_active_crtc_count > 1)) {
872
873 radeon_bandwidth_update(rdev);
874
875 radeon_dpm_display_configuration_changed(rdev);
876 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
877 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
878 return;
879 }
880 }
881 }
882 }
883
884 printk("switching from power state:\n");
885 radeon_dpm_print_power_state(rdev, rdev->pm.dpm.current_ps);
886 printk("switching to power state:\n");
887 radeon_dpm_print_power_state(rdev, rdev->pm.dpm.requested_ps);
888
889 mutex_lock(&rdev->ddev->struct_mutex);
890 down_write(&rdev->pm.mclk_lock);
891 mutex_lock(&rdev->ring_lock);
892
893 ret = radeon_dpm_pre_set_power_state(rdev);
894 if (ret)
895 goto done;
896
897
898 radeon_bandwidth_update(rdev);
899
900 radeon_dpm_display_configuration_changed(rdev);
901
902 rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
903 rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
904
905
906 for (i = 0; i < RADEON_NUM_RINGS; i++) {
907 struct radeon_ring *ring = &rdev->ring[i];
908 if (ring->ready)
909 radeon_fence_wait_empty_locked(rdev, i);
910 }
911
912
913 radeon_dpm_set_power_state(rdev);
914
915
916 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps;
917
918 radeon_dpm_post_set_power_state(rdev);
919
920 if (rdev->asic->dpm.force_performance_level) {
921 if (rdev->pm.dpm.thermal_active)
922
923 radeon_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_LOW);
924 else
925
926 radeon_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO);
927 }
928
929done:
930 mutex_unlock(&rdev->ring_lock);
931 up_write(&rdev->pm.mclk_lock);
932 mutex_unlock(&rdev->ddev->struct_mutex);
933}
934
935void radeon_dpm_enable_uvd(struct radeon_device *rdev, bool enable)
936{
937 enum radeon_pm_state_type dpm_state;
938
939 if (rdev->asic->dpm.powergate_uvd) {
940 mutex_lock(&rdev->pm.mutex);
941
942 radeon_dpm_powergate_uvd(rdev, !enable);
943 mutex_unlock(&rdev->pm.mutex);
944 } else {
945 if (enable) {
946 mutex_lock(&rdev->pm.mutex);
947 rdev->pm.dpm.uvd_active = true;
948
949#if 0
950 if ((rdev->pm.dpm.sd == 1) && (rdev->pm.dpm.hd == 0))
951 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_SD;
952 else if ((rdev->pm.dpm.sd == 2) && (rdev->pm.dpm.hd == 0))
953 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
954 else if ((rdev->pm.dpm.sd == 0) && (rdev->pm.dpm.hd == 1))
955 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
956 else if ((rdev->pm.dpm.sd == 0) && (rdev->pm.dpm.hd == 2))
957 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD2;
958 else
959#endif
960 dpm_state = POWER_STATE_TYPE_INTERNAL_UVD;
961 rdev->pm.dpm.state = dpm_state;
962 mutex_unlock(&rdev->pm.mutex);
963 } else {
964 mutex_lock(&rdev->pm.mutex);
965 rdev->pm.dpm.uvd_active = false;
966 mutex_unlock(&rdev->pm.mutex);
967 }
968
969 radeon_pm_compute_clocks(rdev);
970 }
971}
972
973static void radeon_pm_suspend_old(struct radeon_device *rdev)
974{
975 mutex_lock(&rdev->pm.mutex);
976 if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
977 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE)
978 rdev->pm.dynpm_state = DYNPM_STATE_SUSPENDED;
979 }
980 mutex_unlock(&rdev->pm.mutex);
981
982 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
983}
984
985static void radeon_pm_suspend_dpm(struct radeon_device *rdev)
986{
987 mutex_lock(&rdev->pm.mutex);
988
989 radeon_dpm_disable(rdev);
990
991 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
992 rdev->pm.dpm_enabled = false;
993 mutex_unlock(&rdev->pm.mutex);
994}
995
996void radeon_pm_suspend(struct radeon_device *rdev)
997{
998 if (rdev->pm.pm_method == PM_METHOD_DPM)
999 radeon_pm_suspend_dpm(rdev);
1000 else
1001 radeon_pm_suspend_old(rdev);
1002}
1003
1004static void radeon_pm_resume_old(struct radeon_device *rdev)
1005{
1006
1007 if ((rdev->family >= CHIP_BARTS) &&
1008 (rdev->family <= CHIP_CAYMAN) &&
1009 rdev->mc_fw) {
1010 if (rdev->pm.default_vddc)
1011 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1012 SET_VOLTAGE_TYPE_ASIC_VDDC);
1013 if (rdev->pm.default_vddci)
1014 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1015 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1016 if (rdev->pm.default_sclk)
1017 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1018 if (rdev->pm.default_mclk)
1019 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1020 }
1021
1022 mutex_lock(&rdev->pm.mutex);
1023 rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
1024 rdev->pm.current_clock_mode_index = 0;
1025 rdev->pm.current_sclk = rdev->pm.default_sclk;
1026 rdev->pm.current_mclk = rdev->pm.default_mclk;
1027 rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
1028 rdev->pm.current_vddci = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.vddci;
1029 if (rdev->pm.pm_method == PM_METHOD_DYNPM
1030 && rdev->pm.dynpm_state == DYNPM_STATE_SUSPENDED) {
1031 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1032 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1033 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1034 }
1035 mutex_unlock(&rdev->pm.mutex);
1036 radeon_pm_compute_clocks(rdev);
1037}
1038
1039static void radeon_pm_resume_dpm(struct radeon_device *rdev)
1040{
1041 int ret;
1042
1043
1044 mutex_lock(&rdev->pm.mutex);
1045 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1046 radeon_dpm_setup_asic(rdev);
1047 ret = radeon_dpm_enable(rdev);
1048 mutex_unlock(&rdev->pm.mutex);
1049 if (ret) {
1050 DRM_ERROR("radeon: dpm resume failed\n");
1051 if ((rdev->family >= CHIP_BARTS) &&
1052 (rdev->family <= CHIP_CAYMAN) &&
1053 rdev->mc_fw) {
1054 if (rdev->pm.default_vddc)
1055 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1056 SET_VOLTAGE_TYPE_ASIC_VDDC);
1057 if (rdev->pm.default_vddci)
1058 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1059 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1060 if (rdev->pm.default_sclk)
1061 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1062 if (rdev->pm.default_mclk)
1063 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1064 }
1065 } else {
1066 rdev->pm.dpm_enabled = true;
1067 radeon_pm_compute_clocks(rdev);
1068 }
1069}
1070
1071void radeon_pm_resume(struct radeon_device *rdev)
1072{
1073 if (rdev->pm.pm_method == PM_METHOD_DPM)
1074 radeon_pm_resume_dpm(rdev);
1075 else
1076 radeon_pm_resume_old(rdev);
1077}
1078
1079static int radeon_pm_init_old(struct radeon_device *rdev)
1080{
1081 int ret;
1082
1083 rdev->pm.profile = PM_PROFILE_DEFAULT;
1084 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
1085 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1086 rdev->pm.dynpm_can_upclock = true;
1087 rdev->pm.dynpm_can_downclock = true;
1088 rdev->pm.default_sclk = rdev->clock.default_sclk;
1089 rdev->pm.default_mclk = rdev->clock.default_mclk;
1090 rdev->pm.current_sclk = rdev->clock.default_sclk;
1091 rdev->pm.current_mclk = rdev->clock.default_mclk;
1092 rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
1093
1094 if (rdev->bios) {
1095 if (rdev->is_atom_bios)
1096 radeon_atombios_get_power_modes(rdev);
1097 else
1098 radeon_combios_get_power_modes(rdev);
1099 radeon_pm_print_states(rdev);
1100 radeon_pm_init_profile(rdev);
1101
1102 if ((rdev->family >= CHIP_BARTS) &&
1103 (rdev->family <= CHIP_CAYMAN) &&
1104 rdev->mc_fw) {
1105 if (rdev->pm.default_vddc)
1106 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1107 SET_VOLTAGE_TYPE_ASIC_VDDC);
1108 if (rdev->pm.default_vddci)
1109 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1110 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1111 if (rdev->pm.default_sclk)
1112 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1113 if (rdev->pm.default_mclk)
1114 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1115 }
1116 }
1117
1118
1119 ret = radeon_hwmon_init(rdev);
1120 if (ret)
1121 return ret;
1122
1123 INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
1124
1125 if (rdev->pm.num_power_states > 1) {
1126
1127 ret = device_create_file(rdev->dev, &dev_attr_power_profile);
1128 if (ret)
1129 DRM_ERROR("failed to create device file for power profile\n");
1130 ret = device_create_file(rdev->dev, &dev_attr_power_method);
1131 if (ret)
1132 DRM_ERROR("failed to create device file for power method\n");
1133
1134 if (radeon_debugfs_pm_init(rdev)) {
1135 DRM_ERROR("Failed to register debugfs file for PM!\n");
1136 }
1137
1138 DRM_INFO("radeon: power management initialized\n");
1139 }
1140
1141 return 0;
1142}
1143
1144static void radeon_dpm_print_power_states(struct radeon_device *rdev)
1145{
1146 int i;
1147
1148 for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
1149 printk("== power state %d ==\n", i);
1150 radeon_dpm_print_power_state(rdev, &rdev->pm.dpm.ps[i]);
1151 }
1152}
1153
1154static int radeon_pm_init_dpm(struct radeon_device *rdev)
1155{
1156 int ret;
1157
1158
1159 rdev->pm.dpm.state = POWER_STATE_TYPE_BALANCED;
1160 rdev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
1161 rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;
1162 rdev->pm.default_sclk = rdev->clock.default_sclk;
1163 rdev->pm.default_mclk = rdev->clock.default_mclk;
1164 rdev->pm.current_sclk = rdev->clock.default_sclk;
1165 rdev->pm.current_mclk = rdev->clock.default_mclk;
1166 rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
1167
1168 if (rdev->bios && rdev->is_atom_bios)
1169 radeon_atombios_get_power_modes(rdev);
1170 else
1171 return -EINVAL;
1172
1173
1174 ret = radeon_hwmon_init(rdev);
1175 if (ret)
1176 return ret;
1177
1178 INIT_WORK(&rdev->pm.dpm.thermal.work, radeon_dpm_thermal_work_handler);
1179 mutex_lock(&rdev->pm.mutex);
1180 radeon_dpm_init(rdev);
1181 rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1182 radeon_dpm_print_power_states(rdev);
1183 radeon_dpm_setup_asic(rdev);
1184 ret = radeon_dpm_enable(rdev);
1185 mutex_unlock(&rdev->pm.mutex);
1186 if (ret) {
1187 rdev->pm.dpm_enabled = false;
1188 if ((rdev->family >= CHIP_BARTS) &&
1189 (rdev->family <= CHIP_CAYMAN) &&
1190 rdev->mc_fw) {
1191 if (rdev->pm.default_vddc)
1192 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1193 SET_VOLTAGE_TYPE_ASIC_VDDC);
1194 if (rdev->pm.default_vddci)
1195 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1196 SET_VOLTAGE_TYPE_ASIC_VDDCI);
1197 if (rdev->pm.default_sclk)
1198 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1199 if (rdev->pm.default_mclk)
1200 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1201 }
1202 DRM_ERROR("radeon: dpm initialization failed\n");
1203 return ret;
1204 }
1205 rdev->pm.dpm_enabled = true;
1206 radeon_pm_compute_clocks(rdev);
1207
1208 if (rdev->pm.num_power_states > 1) {
1209 ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
1210 if (ret)
1211 DRM_ERROR("failed to create device file for dpm state\n");
1212 ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
1213 if (ret)
1214 DRM_ERROR("failed to create device file for dpm state\n");
1215
1216 ret = device_create_file(rdev->dev, &dev_attr_power_profile);
1217 if (ret)
1218 DRM_ERROR("failed to create device file for power profile\n");
1219 ret = device_create_file(rdev->dev, &dev_attr_power_method);
1220 if (ret)
1221 DRM_ERROR("failed to create device file for power method\n");
1222
1223 if (radeon_debugfs_pm_init(rdev)) {
1224 DRM_ERROR("Failed to register debugfs file for dpm!\n");
1225 }
1226
1227 DRM_INFO("radeon: dpm initialized\n");
1228 }
1229
1230 return 0;
1231}
1232
1233int radeon_pm_init(struct radeon_device *rdev)
1234{
1235
1236 switch (rdev->family) {
1237 case CHIP_RV610:
1238 case CHIP_RV630:
1239 case CHIP_RV620:
1240 case CHIP_RV635:
1241 case CHIP_RV670:
1242 case CHIP_RS780:
1243 case CHIP_RS880:
1244 case CHIP_RV770:
1245 case CHIP_RV730:
1246 case CHIP_RV710:
1247 case CHIP_RV740:
1248 case CHIP_CEDAR:
1249 case CHIP_REDWOOD:
1250 case CHIP_JUNIPER:
1251 case CHIP_CYPRESS:
1252 case CHIP_HEMLOCK:
1253 case CHIP_PALM:
1254 case CHIP_SUMO:
1255 case CHIP_SUMO2:
1256 case CHIP_BARTS:
1257 case CHIP_TURKS:
1258 case CHIP_CAICOS:
1259 case CHIP_CAYMAN:
1260 case CHIP_ARUBA:
1261 case CHIP_TAHITI:
1262 case CHIP_PITCAIRN:
1263 case CHIP_VERDE:
1264 case CHIP_OLAND:
1265 case CHIP_HAINAN:
1266 case CHIP_BONAIRE:
1267 case CHIP_KABINI:
1268 case CHIP_KAVERI:
1269
1270 if (!rdev->rlc_fw)
1271 rdev->pm.pm_method = PM_METHOD_PROFILE;
1272 else if ((rdev->family >= CHIP_RV770) &&
1273 (!(rdev->flags & RADEON_IS_IGP)) &&
1274 (!rdev->smc_fw))
1275 rdev->pm.pm_method = PM_METHOD_PROFILE;
1276 else if (radeon_dpm == 1)
1277 rdev->pm.pm_method = PM_METHOD_DPM;
1278 else
1279 rdev->pm.pm_method = PM_METHOD_PROFILE;
1280 break;
1281 default:
1282
1283 rdev->pm.pm_method = PM_METHOD_PROFILE;
1284 break;
1285 }
1286
1287 if (rdev->pm.pm_method == PM_METHOD_DPM)
1288 return radeon_pm_init_dpm(rdev);
1289 else
1290 return radeon_pm_init_old(rdev);
1291}
1292
1293static void radeon_pm_fini_old(struct radeon_device *rdev)
1294{
1295 if (rdev->pm.num_power_states > 1) {
1296 mutex_lock(&rdev->pm.mutex);
1297 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
1298 rdev->pm.profile = PM_PROFILE_DEFAULT;
1299 radeon_pm_update_profile(rdev);
1300 radeon_pm_set_clocks(rdev);
1301 } else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1302
1303 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
1304 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
1305 radeon_pm_set_clocks(rdev);
1306 }
1307 mutex_unlock(&rdev->pm.mutex);
1308
1309 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
1310
1311 device_remove_file(rdev->dev, &dev_attr_power_profile);
1312 device_remove_file(rdev->dev, &dev_attr_power_method);
1313 }
1314
1315 if (rdev->pm.power_state)
1316 kfree(rdev->pm.power_state);
1317
1318 radeon_hwmon_fini(rdev);
1319}
1320
1321static void radeon_pm_fini_dpm(struct radeon_device *rdev)
1322{
1323 if (rdev->pm.num_power_states > 1) {
1324 mutex_lock(&rdev->pm.mutex);
1325 radeon_dpm_disable(rdev);
1326 mutex_unlock(&rdev->pm.mutex);
1327
1328 device_remove_file(rdev->dev, &dev_attr_power_dpm_state);
1329 device_remove_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
1330
1331 device_remove_file(rdev->dev, &dev_attr_power_profile);
1332 device_remove_file(rdev->dev, &dev_attr_power_method);
1333 }
1334 radeon_dpm_fini(rdev);
1335
1336 if (rdev->pm.power_state)
1337 kfree(rdev->pm.power_state);
1338
1339 radeon_hwmon_fini(rdev);
1340}
1341
1342void radeon_pm_fini(struct radeon_device *rdev)
1343{
1344 if (rdev->pm.pm_method == PM_METHOD_DPM)
1345 radeon_pm_fini_dpm(rdev);
1346 else
1347 radeon_pm_fini_old(rdev);
1348}
1349
1350static void radeon_pm_compute_clocks_old(struct radeon_device *rdev)
1351{
1352 struct drm_device *ddev = rdev->ddev;
1353 struct drm_crtc *crtc;
1354 struct radeon_crtc *radeon_crtc;
1355
1356 if (rdev->pm.num_power_states < 2)
1357 return;
1358
1359 mutex_lock(&rdev->pm.mutex);
1360
1361 rdev->pm.active_crtcs = 0;
1362 rdev->pm.active_crtc_count = 0;
1363 list_for_each_entry(crtc,
1364 &ddev->mode_config.crtc_list, head) {
1365 radeon_crtc = to_radeon_crtc(crtc);
1366 if (radeon_crtc->enabled) {
1367 rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
1368 rdev->pm.active_crtc_count++;
1369 }
1370 }
1371
1372 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
1373 radeon_pm_update_profile(rdev);
1374 radeon_pm_set_clocks(rdev);
1375 } else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1376 if (rdev->pm.dynpm_state != DYNPM_STATE_DISABLED) {
1377 if (rdev->pm.active_crtc_count > 1) {
1378 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
1379 cancel_delayed_work(&rdev->pm.dynpm_idle_work);
1380
1381 rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
1382 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
1383 radeon_pm_get_dynpm_state(rdev);
1384 radeon_pm_set_clocks(rdev);
1385
1386 DRM_DEBUG_DRIVER("radeon: dynamic power management deactivated\n");
1387 }
1388 } else if (rdev->pm.active_crtc_count == 1) {
1389
1390
1391 if (rdev->pm.dynpm_state == DYNPM_STATE_MINIMUM) {
1392 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1393 rdev->pm.dynpm_planned_action = DYNPM_ACTION_UPCLOCK;
1394 radeon_pm_get_dynpm_state(rdev);
1395 radeon_pm_set_clocks(rdev);
1396
1397 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1398 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1399 } else if (rdev->pm.dynpm_state == DYNPM_STATE_PAUSED) {
1400 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1401 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1402 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1403 DRM_DEBUG_DRIVER("radeon: dynamic power management activated\n");
1404 }
1405 } else {
1406 if (rdev->pm.dynpm_state != DYNPM_STATE_MINIMUM) {
1407 cancel_delayed_work(&rdev->pm.dynpm_idle_work);
1408
1409 rdev->pm.dynpm_state = DYNPM_STATE_MINIMUM;
1410 rdev->pm.dynpm_planned_action = DYNPM_ACTION_MINIMUM;
1411 radeon_pm_get_dynpm_state(rdev);
1412 radeon_pm_set_clocks(rdev);
1413 }
1414 }
1415 }
1416 }
1417
1418 mutex_unlock(&rdev->pm.mutex);
1419}
1420
1421static void radeon_pm_compute_clocks_dpm(struct radeon_device *rdev)
1422{
1423 struct drm_device *ddev = rdev->ddev;
1424 struct drm_crtc *crtc;
1425 struct radeon_crtc *radeon_crtc;
1426
1427 mutex_lock(&rdev->pm.mutex);
1428
1429
1430 rdev->pm.dpm.new_active_crtcs = 0;
1431 rdev->pm.dpm.new_active_crtc_count = 0;
1432 list_for_each_entry(crtc,
1433 &ddev->mode_config.crtc_list, head) {
1434 radeon_crtc = to_radeon_crtc(crtc);
1435 if (crtc->enabled) {
1436 rdev->pm.dpm.new_active_crtcs |= (1 << radeon_crtc->crtc_id);
1437 rdev->pm.dpm.new_active_crtc_count++;
1438 }
1439 }
1440
1441
1442 if (power_supply_is_system_supplied() > 0)
1443 rdev->pm.dpm.ac_power = true;
1444 else
1445 rdev->pm.dpm.ac_power = false;
1446
1447 radeon_dpm_change_power_state_locked(rdev);
1448
1449 mutex_unlock(&rdev->pm.mutex);
1450
1451}
1452
1453void radeon_pm_compute_clocks(struct radeon_device *rdev)
1454{
1455 if (rdev->pm.pm_method == PM_METHOD_DPM)
1456 radeon_pm_compute_clocks_dpm(rdev);
1457 else
1458 radeon_pm_compute_clocks_old(rdev);
1459}
1460
1461static bool radeon_pm_in_vbl(struct radeon_device *rdev)
1462{
1463 int crtc, vpos, hpos, vbl_status;
1464 bool in_vbl = true;
1465
1466
1467
1468
1469 for (crtc = 0; (crtc < rdev->num_crtc) && in_vbl; crtc++) {
1470 if (rdev->pm.active_crtcs & (1 << crtc)) {
1471 vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev, crtc, &vpos, &hpos);
1472 if ((vbl_status & DRM_SCANOUTPOS_VALID) &&
1473 !(vbl_status & DRM_SCANOUTPOS_INVBL))
1474 in_vbl = false;
1475 }
1476 }
1477
1478 return in_vbl;
1479}
1480
1481static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
1482{
1483 u32 stat_crtc = 0;
1484 bool in_vbl = radeon_pm_in_vbl(rdev);
1485
1486 if (in_vbl == false)
1487 DRM_DEBUG_DRIVER("not in vbl for pm change %08x at %s\n", stat_crtc,
1488 finish ? "exit" : "entry");
1489 return in_vbl;
1490}
1491
1492static void radeon_dynpm_idle_work_handler(struct work_struct *work)
1493{
1494 struct radeon_device *rdev;
1495 int resched;
1496 rdev = container_of(work, struct radeon_device,
1497 pm.dynpm_idle_work.work);
1498
1499 resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
1500 mutex_lock(&rdev->pm.mutex);
1501 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
1502 int not_processed = 0;
1503 int i;
1504
1505 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1506 struct radeon_ring *ring = &rdev->ring[i];
1507
1508 if (ring->ready) {
1509 not_processed += radeon_fence_count_emitted(rdev, i);
1510 if (not_processed >= 3)
1511 break;
1512 }
1513 }
1514
1515 if (not_processed >= 3) {
1516 if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_DOWNCLOCK) {
1517 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1518 } else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
1519 rdev->pm.dynpm_can_upclock) {
1520 rdev->pm.dynpm_planned_action =
1521 DYNPM_ACTION_UPCLOCK;
1522 rdev->pm.dynpm_action_timeout = jiffies +
1523 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
1524 }
1525 } else if (not_processed == 0) {
1526 if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_UPCLOCK) {
1527 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1528 } else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
1529 rdev->pm.dynpm_can_downclock) {
1530 rdev->pm.dynpm_planned_action =
1531 DYNPM_ACTION_DOWNCLOCK;
1532 rdev->pm.dynpm_action_timeout = jiffies +
1533 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
1534 }
1535 }
1536
1537
1538
1539
1540 if (rdev->pm.dynpm_planned_action != DYNPM_ACTION_NONE &&
1541 jiffies > rdev->pm.dynpm_action_timeout) {
1542 radeon_pm_get_dynpm_state(rdev);
1543 radeon_pm_set_clocks(rdev);
1544 }
1545
1546 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1547 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1548 }
1549 mutex_unlock(&rdev->pm.mutex);
1550 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
1551}
1552
1553
1554
1555
1556#if defined(CONFIG_DEBUG_FS)
1557
1558static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
1559{
1560 struct drm_info_node *node = (struct drm_info_node *) m->private;
1561 struct drm_device *dev = node->minor->dev;
1562 struct radeon_device *rdev = dev->dev_private;
1563
1564 if (rdev->pm.dpm_enabled) {
1565 mutex_lock(&rdev->pm.mutex);
1566 if (rdev->asic->dpm.debugfs_print_current_performance_level)
1567 radeon_dpm_debugfs_print_current_performance_level(rdev, m);
1568 else
1569 seq_printf(m, "Debugfs support not implemented for this asic\n");
1570 mutex_unlock(&rdev->pm.mutex);
1571 } else {
1572 seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);
1573
1574 if ((rdev->family >= CHIP_PALM) && (rdev->flags & RADEON_IS_IGP))
1575 seq_printf(m, "current engine clock: %u0 kHz\n", rdev->pm.current_sclk);
1576 else
1577 seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
1578 seq_printf(m, "default memory clock: %u0 kHz\n", rdev->pm.default_mclk);
1579 if (rdev->asic->pm.get_memory_clock)
1580 seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
1581 if (rdev->pm.current_vddc)
1582 seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);
1583 if (rdev->asic->pm.get_pcie_lanes)
1584 seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
1585 }
1586
1587 return 0;
1588}
1589
1590static struct drm_info_list radeon_pm_info_list[] = {
1591 {"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
1592};
1593#endif
1594
1595static int radeon_debugfs_pm_init(struct radeon_device *rdev)
1596{
1597#if defined(CONFIG_DEBUG_FS)
1598 return radeon_debugfs_add_files(rdev, radeon_pm_info_list, ARRAY_SIZE(radeon_pm_info_list));
1599#else
1600 return 0;
1601#endif
1602}
1603
