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:
9 * The above copyright notice and this permission notice shall be included in
10 * all copies or substantial portions of the Software.
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.
20 * Authors: Rafał Miłecki <zajec5@gmail.com>
21 * Alex Deucher <alexdeucher@gmail.com>
25 #include "amdgpu_drv.h"
26 #include "amdgpu_pm.h"
27 #include "amdgpu_dpm.h"
29 #include <linux/power_supply.h>
30 #include <linux/hwmon.h>
31 #include <linux/hwmon-sysfs.h>
33 static int amdgpu_debugfs_pm_init(struct amdgpu_device
*adev
);
35 void amdgpu_pm_acpi_event_handler(struct amdgpu_device
*adev
)
37 if (adev
->pm
.dpm_enabled
) {
38 mutex_lock(&adev
->pm
.mutex
);
39 if (power_supply_is_system_supplied() > 0)
40 adev
->pm
.dpm
.ac_power
= true;
42 adev
->pm
.dpm
.ac_power
= false;
43 if (adev
->pm
.funcs
->enable_bapm
)
44 amdgpu_dpm_enable_bapm(adev
, adev
->pm
.dpm
.ac_power
);
45 mutex_unlock(&adev
->pm
.mutex
);
49 static ssize_t
amdgpu_get_dpm_state(struct device
*dev
,
50 struct device_attribute
*attr
,
53 struct drm_device
*ddev
= dev_get_drvdata(dev
);
54 struct amdgpu_device
*adev
= ddev
->dev_private
;
55 enum amdgpu_pm_state_type pm
= adev
->pm
.dpm
.user_state
;
57 return snprintf(buf
, PAGE_SIZE
, "%s\n",
58 (pm
== POWER_STATE_TYPE_BATTERY
) ? "battery" :
59 (pm
== POWER_STATE_TYPE_BALANCED
) ? "balanced" : "performance");
62 static ssize_t
amdgpu_set_dpm_state(struct device
*dev
,
63 struct device_attribute
*attr
,
67 struct drm_device
*ddev
= dev_get_drvdata(dev
);
68 struct amdgpu_device
*adev
= ddev
->dev_private
;
70 mutex_lock(&adev
->pm
.mutex
);
71 if (strncmp("battery", buf
, strlen("battery")) == 0)
72 adev
->pm
.dpm
.user_state
= POWER_STATE_TYPE_BATTERY
;
73 else if (strncmp("balanced", buf
, strlen("balanced")) == 0)
74 adev
->pm
.dpm
.user_state
= POWER_STATE_TYPE_BALANCED
;
75 else if (strncmp("performance", buf
, strlen("performance")) == 0)
76 adev
->pm
.dpm
.user_state
= POWER_STATE_TYPE_PERFORMANCE
;
78 mutex_unlock(&adev
->pm
.mutex
);
82 mutex_unlock(&adev
->pm
.mutex
);
84 /* Can't set dpm state when the card is off */
85 if (!(adev
->flags
& AMDGPU_IS_PX
) ||
86 (ddev
->switch_power_state
== DRM_SWITCH_POWER_ON
))
87 amdgpu_pm_compute_clocks(adev
);
92 static ssize_t
amdgpu_get_dpm_forced_performance_level(struct device
*dev
,
93 struct device_attribute
*attr
,
96 struct drm_device
*ddev
= dev_get_drvdata(dev
);
97 struct amdgpu_device
*adev
= ddev
->dev_private
;
98 enum amdgpu_dpm_forced_level level
= adev
->pm
.dpm
.forced_level
;
100 return snprintf(buf
, PAGE_SIZE
, "%s\n",
101 (level
== AMDGPU_DPM_FORCED_LEVEL_AUTO
) ? "auto" :
102 (level
== AMDGPU_DPM_FORCED_LEVEL_LOW
) ? "low" : "high");
105 static ssize_t
amdgpu_set_dpm_forced_performance_level(struct device
*dev
,
106 struct device_attribute
*attr
,
110 struct drm_device
*ddev
= dev_get_drvdata(dev
);
111 struct amdgpu_device
*adev
= ddev
->dev_private
;
112 enum amdgpu_dpm_forced_level level
;
115 mutex_lock(&adev
->pm
.mutex
);
116 if (strncmp("low", buf
, strlen("low")) == 0) {
117 level
= AMDGPU_DPM_FORCED_LEVEL_LOW
;
118 } else if (strncmp("high", buf
, strlen("high")) == 0) {
119 level
= AMDGPU_DPM_FORCED_LEVEL_HIGH
;
120 } else if (strncmp("auto", buf
, strlen("auto")) == 0) {
121 level
= AMDGPU_DPM_FORCED_LEVEL_AUTO
;
126 if (adev
->pm
.funcs
->force_performance_level
) {
127 if (adev
->pm
.dpm
.thermal_active
) {
131 ret
= amdgpu_dpm_force_performance_level(adev
, level
);
136 mutex_unlock(&adev
->pm
.mutex
);
141 static DEVICE_ATTR(power_dpm_state
, S_IRUGO
| S_IWUSR
, amdgpu_get_dpm_state
, amdgpu_set_dpm_state
);
142 static DEVICE_ATTR(power_dpm_force_performance_level
, S_IRUGO
| S_IWUSR
,
143 amdgpu_get_dpm_forced_performance_level
,
144 amdgpu_set_dpm_forced_performance_level
);
146 static ssize_t
amdgpu_hwmon_show_temp(struct device
*dev
,
147 struct device_attribute
*attr
,
150 struct amdgpu_device
*adev
= dev_get_drvdata(dev
);
153 if (adev
->pm
.funcs
->get_temperature
)
154 temp
= amdgpu_dpm_get_temperature(adev
);
158 return snprintf(buf
, PAGE_SIZE
, "%d\n", temp
);
161 static ssize_t
amdgpu_hwmon_show_temp_thresh(struct device
*dev
,
162 struct device_attribute
*attr
,
165 struct amdgpu_device
*adev
= dev_get_drvdata(dev
);
166 int hyst
= to_sensor_dev_attr(attr
)->index
;
170 temp
= adev
->pm
.dpm
.thermal
.min_temp
;
172 temp
= adev
->pm
.dpm
.thermal
.max_temp
;
174 return snprintf(buf
, PAGE_SIZE
, "%d\n", temp
);
177 static ssize_t
amdgpu_hwmon_get_pwm1_enable(struct device
*dev
,
178 struct device_attribute
*attr
,
181 struct amdgpu_device
*adev
= dev_get_drvdata(dev
);
184 if (adev
->pm
.funcs
->get_fan_control_mode
)
185 pwm_mode
= amdgpu_dpm_get_fan_control_mode(adev
);
187 /* never 0 (full-speed), fuse or smc-controlled always */
188 return sprintf(buf
, "%i\n", pwm_mode
== FDO_PWM_MODE_STATIC
? 1 : 2);
191 static ssize_t
amdgpu_hwmon_set_pwm1_enable(struct device
*dev
,
192 struct device_attribute
*attr
,
196 struct amdgpu_device
*adev
= dev_get_drvdata(dev
);
200 if(!adev
->pm
.funcs
->set_fan_control_mode
)
203 err
= kstrtoint(buf
, 10, &value
);
208 case 1: /* manual, percent-based */
209 amdgpu_dpm_set_fan_control_mode(adev
, FDO_PWM_MODE_STATIC
);
211 default: /* disable */
212 amdgpu_dpm_set_fan_control_mode(adev
, 0);
219 static ssize_t
amdgpu_hwmon_get_pwm1_min(struct device
*dev
,
220 struct device_attribute
*attr
,
223 return sprintf(buf
, "%i\n", 0);
226 static ssize_t
amdgpu_hwmon_get_pwm1_max(struct device
*dev
,
227 struct device_attribute
*attr
,
230 return sprintf(buf
, "%i\n", 255);
233 static ssize_t
amdgpu_hwmon_set_pwm1(struct device
*dev
,
234 struct device_attribute
*attr
,
235 const char *buf
, size_t count
)
237 struct amdgpu_device
*adev
= dev_get_drvdata(dev
);
241 err
= kstrtou32(buf
, 10, &value
);
245 value
= (value
* 100) / 255;
247 err
= amdgpu_dpm_set_fan_speed_percent(adev
, value
);
254 static ssize_t
amdgpu_hwmon_get_pwm1(struct device
*dev
,
255 struct device_attribute
*attr
,
258 struct amdgpu_device
*adev
= dev_get_drvdata(dev
);
262 err
= amdgpu_dpm_get_fan_speed_percent(adev
, &speed
);
266 speed
= (speed
* 255) / 100;
268 return sprintf(buf
, "%i\n", speed
);
271 static SENSOR_DEVICE_ATTR(temp1_input
, S_IRUGO
, amdgpu_hwmon_show_temp
, NULL
, 0);
272 static SENSOR_DEVICE_ATTR(temp1_crit
, S_IRUGO
, amdgpu_hwmon_show_temp_thresh
, NULL
, 0);
273 static SENSOR_DEVICE_ATTR(temp1_crit_hyst
, S_IRUGO
, amdgpu_hwmon_show_temp_thresh
, NULL
, 1);
274 static SENSOR_DEVICE_ATTR(pwm1
, S_IRUGO
| S_IWUSR
, amdgpu_hwmon_get_pwm1
, amdgpu_hwmon_set_pwm1
, 0);
275 static SENSOR_DEVICE_ATTR(pwm1_enable
, S_IRUGO
| S_IWUSR
, amdgpu_hwmon_get_pwm1_enable
, amdgpu_hwmon_set_pwm1_enable
, 0);
276 static SENSOR_DEVICE_ATTR(pwm1_min
, S_IRUGO
, amdgpu_hwmon_get_pwm1_min
, NULL
, 0);
277 static SENSOR_DEVICE_ATTR(pwm1_max
, S_IRUGO
, amdgpu_hwmon_get_pwm1_max
, NULL
, 0);
279 static struct attribute
*hwmon_attributes
[] = {
280 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
281 &sensor_dev_attr_temp1_crit
.dev_attr
.attr
,
282 &sensor_dev_attr_temp1_crit_hyst
.dev_attr
.attr
,
283 &sensor_dev_attr_pwm1
.dev_attr
.attr
,
284 &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
,
285 &sensor_dev_attr_pwm1_min
.dev_attr
.attr
,
286 &sensor_dev_attr_pwm1_max
.dev_attr
.attr
,
290 static umode_t
hwmon_attributes_visible(struct kobject
*kobj
,
291 struct attribute
*attr
, int index
)
293 struct device
*dev
= container_of(kobj
, struct device
, kobj
);
294 struct amdgpu_device
*adev
= dev_get_drvdata(dev
);
295 umode_t effective_mode
= attr
->mode
;
297 /* Skip limit attributes if DPM is not enabled */
298 if (!adev
->pm
.dpm_enabled
&&
299 (attr
== &sensor_dev_attr_temp1_crit
.dev_attr
.attr
||
300 attr
== &sensor_dev_attr_temp1_crit_hyst
.dev_attr
.attr
))
303 /* Skip fan attributes if fan is not present */
304 if (adev
->pm
.no_fan
&&
305 (attr
== &sensor_dev_attr_pwm1
.dev_attr
.attr
||
306 attr
== &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
||
307 attr
== &sensor_dev_attr_pwm1_max
.dev_attr
.attr
||
308 attr
== &sensor_dev_attr_pwm1_min
.dev_attr
.attr
))
311 /* mask fan attributes if we have no bindings for this asic to expose */
312 if ((!adev
->pm
.funcs
->get_fan_speed_percent
&&
313 attr
== &sensor_dev_attr_pwm1
.dev_attr
.attr
) || /* can't query fan */
314 (!adev
->pm
.funcs
->get_fan_control_mode
&&
315 attr
== &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
)) /* can't query state */
316 effective_mode
&= ~S_IRUGO
;
318 if ((!adev
->pm
.funcs
->set_fan_speed_percent
&&
319 attr
== &sensor_dev_attr_pwm1
.dev_attr
.attr
) || /* can't manage fan */
320 (!adev
->pm
.funcs
->set_fan_control_mode
&&
321 attr
== &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
)) /* can't manage state */
322 effective_mode
&= ~S_IWUSR
;
324 /* hide max/min values if we can't both query and manage the fan */
325 if ((!adev
->pm
.funcs
->set_fan_speed_percent
&&
326 !adev
->pm
.funcs
->get_fan_speed_percent
) &&
327 (attr
== &sensor_dev_attr_pwm1_max
.dev_attr
.attr
||
328 attr
== &sensor_dev_attr_pwm1_min
.dev_attr
.attr
))
331 return effective_mode
;
334 static const struct attribute_group hwmon_attrgroup
= {
335 .attrs
= hwmon_attributes
,
336 .is_visible
= hwmon_attributes_visible
,
339 static const struct attribute_group
*hwmon_groups
[] = {
344 void amdgpu_dpm_thermal_work_handler(struct work_struct
*work
)
346 struct amdgpu_device
*adev
=
347 container_of(work
, struct amdgpu_device
,
348 pm
.dpm
.thermal
.work
);
349 /* switch to the thermal state */
350 enum amdgpu_pm_state_type dpm_state
= POWER_STATE_TYPE_INTERNAL_THERMAL
;
352 if (!adev
->pm
.dpm_enabled
)
355 if (adev
->pm
.funcs
->get_temperature
) {
356 int temp
= amdgpu_dpm_get_temperature(adev
);
358 if (temp
< adev
->pm
.dpm
.thermal
.min_temp
)
359 /* switch back the user state */
360 dpm_state
= adev
->pm
.dpm
.user_state
;
362 if (adev
->pm
.dpm
.thermal
.high_to_low
)
363 /* switch back the user state */
364 dpm_state
= adev
->pm
.dpm
.user_state
;
366 mutex_lock(&adev
->pm
.mutex
);
367 if (dpm_state
== POWER_STATE_TYPE_INTERNAL_THERMAL
)
368 adev
->pm
.dpm
.thermal_active
= true;
370 adev
->pm
.dpm
.thermal_active
= false;
371 adev
->pm
.dpm
.state
= dpm_state
;
372 mutex_unlock(&adev
->pm
.mutex
);
374 amdgpu_pm_compute_clocks(adev
);
377 static struct amdgpu_ps
*amdgpu_dpm_pick_power_state(struct amdgpu_device
*adev
,
378 enum amdgpu_pm_state_type dpm_state
)
381 struct amdgpu_ps
*ps
;
383 bool single_display
= (adev
->pm
.dpm
.new_active_crtc_count
< 2) ?
386 /* check if the vblank period is too short to adjust the mclk */
387 if (single_display
&& adev
->pm
.funcs
->vblank_too_short
) {
388 if (amdgpu_dpm_vblank_too_short(adev
))
389 single_display
= false;
392 /* certain older asics have a separare 3D performance state,
393 * so try that first if the user selected performance
395 if (dpm_state
== POWER_STATE_TYPE_PERFORMANCE
)
396 dpm_state
= POWER_STATE_TYPE_INTERNAL_3DPERF
;
397 /* balanced states don't exist at the moment */
398 if (dpm_state
== POWER_STATE_TYPE_BALANCED
)
399 dpm_state
= POWER_STATE_TYPE_PERFORMANCE
;
402 /* Pick the best power state based on current conditions */
403 for (i
= 0; i
< adev
->pm
.dpm
.num_ps
; i
++) {
404 ps
= &adev
->pm
.dpm
.ps
[i
];
405 ui_class
= ps
->class & ATOM_PPLIB_CLASSIFICATION_UI_MASK
;
408 case POWER_STATE_TYPE_BATTERY
:
409 if (ui_class
== ATOM_PPLIB_CLASSIFICATION_UI_BATTERY
) {
410 if (ps
->caps
& ATOM_PPLIB_SINGLE_DISPLAY_ONLY
) {
417 case POWER_STATE_TYPE_BALANCED
:
418 if (ui_class
== ATOM_PPLIB_CLASSIFICATION_UI_BALANCED
) {
419 if (ps
->caps
& ATOM_PPLIB_SINGLE_DISPLAY_ONLY
) {
426 case POWER_STATE_TYPE_PERFORMANCE
:
427 if (ui_class
== ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE
) {
428 if (ps
->caps
& ATOM_PPLIB_SINGLE_DISPLAY_ONLY
) {
435 /* internal states */
436 case POWER_STATE_TYPE_INTERNAL_UVD
:
437 if (adev
->pm
.dpm
.uvd_ps
)
438 return adev
->pm
.dpm
.uvd_ps
;
441 case POWER_STATE_TYPE_INTERNAL_UVD_SD
:
442 if (ps
->class & ATOM_PPLIB_CLASSIFICATION_SDSTATE
)
445 case POWER_STATE_TYPE_INTERNAL_UVD_HD
:
446 if (ps
->class & ATOM_PPLIB_CLASSIFICATION_HDSTATE
)
449 case POWER_STATE_TYPE_INTERNAL_UVD_HD2
:
450 if (ps
->class & ATOM_PPLIB_CLASSIFICATION_HD2STATE
)
453 case POWER_STATE_TYPE_INTERNAL_UVD_MVC
:
454 if (ps
->class2
& ATOM_PPLIB_CLASSIFICATION2_MVC
)
457 case POWER_STATE_TYPE_INTERNAL_BOOT
:
458 return adev
->pm
.dpm
.boot_ps
;
459 case POWER_STATE_TYPE_INTERNAL_THERMAL
:
460 if (ps
->class & ATOM_PPLIB_CLASSIFICATION_THERMAL
)
463 case POWER_STATE_TYPE_INTERNAL_ACPI
:
464 if (ps
->class & ATOM_PPLIB_CLASSIFICATION_ACPI
)
467 case POWER_STATE_TYPE_INTERNAL_ULV
:
468 if (ps
->class2
& ATOM_PPLIB_CLASSIFICATION2_ULV
)
471 case POWER_STATE_TYPE_INTERNAL_3DPERF
:
472 if (ps
->class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE
)
479 /* use a fallback state if we didn't match */
481 case POWER_STATE_TYPE_INTERNAL_UVD_SD
:
482 dpm_state
= POWER_STATE_TYPE_INTERNAL_UVD_HD
;
484 case POWER_STATE_TYPE_INTERNAL_UVD_HD
:
485 case POWER_STATE_TYPE_INTERNAL_UVD_HD2
:
486 case POWER_STATE_TYPE_INTERNAL_UVD_MVC
:
487 if (adev
->pm
.dpm
.uvd_ps
) {
488 return adev
->pm
.dpm
.uvd_ps
;
490 dpm_state
= POWER_STATE_TYPE_PERFORMANCE
;
493 case POWER_STATE_TYPE_INTERNAL_THERMAL
:
494 dpm_state
= POWER_STATE_TYPE_INTERNAL_ACPI
;
496 case POWER_STATE_TYPE_INTERNAL_ACPI
:
497 dpm_state
= POWER_STATE_TYPE_BATTERY
;
499 case POWER_STATE_TYPE_BATTERY
:
500 case POWER_STATE_TYPE_BALANCED
:
501 case POWER_STATE_TYPE_INTERNAL_3DPERF
:
502 dpm_state
= POWER_STATE_TYPE_PERFORMANCE
;
511 static void amdgpu_dpm_change_power_state_locked(struct amdgpu_device
*adev
)
514 struct amdgpu_ps
*ps
;
515 enum amdgpu_pm_state_type dpm_state
;
518 /* if dpm init failed */
519 if (!adev
->pm
.dpm_enabled
)
522 if (adev
->pm
.dpm
.user_state
!= adev
->pm
.dpm
.state
) {
523 /* add other state override checks here */
524 if ((!adev
->pm
.dpm
.thermal_active
) &&
525 (!adev
->pm
.dpm
.uvd_active
))
526 adev
->pm
.dpm
.state
= adev
->pm
.dpm
.user_state
;
528 dpm_state
= adev
->pm
.dpm
.state
;
530 ps
= amdgpu_dpm_pick_power_state(adev
, dpm_state
);
532 adev
->pm
.dpm
.requested_ps
= ps
;
536 /* no need to reprogram if nothing changed unless we are on BTC+ */
537 if (adev
->pm
.dpm
.current_ps
== adev
->pm
.dpm
.requested_ps
) {
538 /* vce just modifies an existing state so force a change */
539 if (ps
->vce_active
!= adev
->pm
.dpm
.vce_active
)
541 if (adev
->flags
& AMDGPU_IS_APU
) {
542 /* for APUs if the num crtcs changed but state is the same,
543 * all we need to do is update the display configuration.
545 if (adev
->pm
.dpm
.new_active_crtcs
!= adev
->pm
.dpm
.current_active_crtcs
) {
546 /* update display watermarks based on new power state */
547 amdgpu_display_bandwidth_update(adev
);
548 /* update displays */
549 amdgpu_dpm_display_configuration_changed(adev
);
550 adev
->pm
.dpm
.current_active_crtcs
= adev
->pm
.dpm
.new_active_crtcs
;
551 adev
->pm
.dpm
.current_active_crtc_count
= adev
->pm
.dpm
.new_active_crtc_count
;
555 /* for BTC+ if the num crtcs hasn't changed and state is the same,
556 * nothing to do, if the num crtcs is > 1 and state is the same,
557 * update display configuration.
559 if (adev
->pm
.dpm
.new_active_crtcs
==
560 adev
->pm
.dpm
.current_active_crtcs
) {
562 } else if ((adev
->pm
.dpm
.current_active_crtc_count
> 1) &&
563 (adev
->pm
.dpm
.new_active_crtc_count
> 1)) {
564 /* update display watermarks based on new power state */
565 amdgpu_display_bandwidth_update(adev
);
566 /* update displays */
567 amdgpu_dpm_display_configuration_changed(adev
);
568 adev
->pm
.dpm
.current_active_crtcs
= adev
->pm
.dpm
.new_active_crtcs
;
569 adev
->pm
.dpm
.current_active_crtc_count
= adev
->pm
.dpm
.new_active_crtc_count
;
576 if (amdgpu_dpm
== 1) {
577 printk("switching from power state:\n");
578 amdgpu_dpm_print_power_state(adev
, adev
->pm
.dpm
.current_ps
);
579 printk("switching to power state:\n");
580 amdgpu_dpm_print_power_state(adev
, adev
->pm
.dpm
.requested_ps
);
583 mutex_lock(&adev
->ddev
->struct_mutex
);
584 down_write(&adev
->pm
.mclk_lock
);
585 mutex_lock(&adev
->ring_lock
);
587 /* update whether vce is active */
588 ps
->vce_active
= adev
->pm
.dpm
.vce_active
;
590 ret
= amdgpu_dpm_pre_set_power_state(adev
);
594 /* update display watermarks based on new power state */
595 amdgpu_display_bandwidth_update(adev
);
596 /* update displays */
597 amdgpu_dpm_display_configuration_changed(adev
);
599 adev
->pm
.dpm
.current_active_crtcs
= adev
->pm
.dpm
.new_active_crtcs
;
600 adev
->pm
.dpm
.current_active_crtc_count
= adev
->pm
.dpm
.new_active_crtc_count
;
602 /* wait for the rings to drain */
603 for (i
= 0; i
< AMDGPU_MAX_RINGS
; i
++) {
604 struct amdgpu_ring
*ring
= adev
->rings
[i
];
605 if (ring
&& ring
->ready
)
606 amdgpu_fence_wait_empty(ring
);
609 /* program the new power state */
610 amdgpu_dpm_set_power_state(adev
);
612 /* update current power state */
613 adev
->pm
.dpm
.current_ps
= adev
->pm
.dpm
.requested_ps
;
615 amdgpu_dpm_post_set_power_state(adev
);
617 if (adev
->pm
.funcs
->force_performance_level
) {
618 if (adev
->pm
.dpm
.thermal_active
) {
619 enum amdgpu_dpm_forced_level level
= adev
->pm
.dpm
.forced_level
;
620 /* force low perf level for thermal */
621 amdgpu_dpm_force_performance_level(adev
, AMDGPU_DPM_FORCED_LEVEL_LOW
);
622 /* save the user's level */
623 adev
->pm
.dpm
.forced_level
= level
;
625 /* otherwise, user selected level */
626 amdgpu_dpm_force_performance_level(adev
, adev
->pm
.dpm
.forced_level
);
631 mutex_unlock(&adev
->ring_lock
);
632 up_write(&adev
->pm
.mclk_lock
);
633 mutex_unlock(&adev
->ddev
->struct_mutex
);
636 void amdgpu_dpm_enable_uvd(struct amdgpu_device
*adev
, bool enable
)
638 if (adev
->pm
.funcs
->powergate_uvd
) {
639 mutex_lock(&adev
->pm
.mutex
);
640 /* enable/disable UVD */
641 amdgpu_dpm_powergate_uvd(adev
, !enable
);
642 mutex_unlock(&adev
->pm
.mutex
);
645 mutex_lock(&adev
->pm
.mutex
);
646 adev
->pm
.dpm
.uvd_active
= true;
647 adev
->pm
.dpm
.state
= POWER_STATE_TYPE_INTERNAL_UVD
;
648 mutex_unlock(&adev
->pm
.mutex
);
650 mutex_lock(&adev
->pm
.mutex
);
651 adev
->pm
.dpm
.uvd_active
= false;
652 mutex_unlock(&adev
->pm
.mutex
);
655 amdgpu_pm_compute_clocks(adev
);
659 void amdgpu_dpm_enable_vce(struct amdgpu_device
*adev
, bool enable
)
662 mutex_lock(&adev
->pm
.mutex
);
663 adev
->pm
.dpm
.vce_active
= true;
664 /* XXX select vce level based on ring/task */
665 adev
->pm
.dpm
.vce_level
= AMDGPU_VCE_LEVEL_AC_ALL
;
666 mutex_unlock(&adev
->pm
.mutex
);
668 mutex_lock(&adev
->pm
.mutex
);
669 adev
->pm
.dpm
.vce_active
= false;
670 mutex_unlock(&adev
->pm
.mutex
);
673 amdgpu_pm_compute_clocks(adev
);
676 void amdgpu_pm_print_power_states(struct amdgpu_device
*adev
)
680 for (i
= 0; i
< adev
->pm
.dpm
.num_ps
; i
++) {
681 printk("== power state %d ==\n", i
);
682 amdgpu_dpm_print_power_state(adev
, &adev
->pm
.dpm
.ps
[i
]);
686 int amdgpu_pm_sysfs_init(struct amdgpu_device
*adev
)
690 if (adev
->pm
.funcs
->get_temperature
== NULL
)
692 adev
->pm
.int_hwmon_dev
= hwmon_device_register_with_groups(adev
->dev
,
695 if (IS_ERR(adev
->pm
.int_hwmon_dev
)) {
696 ret
= PTR_ERR(adev
->pm
.int_hwmon_dev
);
698 "Unable to register hwmon device: %d\n", ret
);
702 ret
= device_create_file(adev
->dev
, &dev_attr_power_dpm_state
);
704 DRM_ERROR("failed to create device file for dpm state\n");
707 ret
= device_create_file(adev
->dev
, &dev_attr_power_dpm_force_performance_level
);
709 DRM_ERROR("failed to create device file for dpm state\n");
712 ret
= amdgpu_debugfs_pm_init(adev
);
714 DRM_ERROR("Failed to register debugfs file for dpm!\n");
721 void amdgpu_pm_sysfs_fini(struct amdgpu_device
*adev
)
723 if (adev
->pm
.int_hwmon_dev
)
724 hwmon_device_unregister(adev
->pm
.int_hwmon_dev
);
725 device_remove_file(adev
->dev
, &dev_attr_power_dpm_state
);
726 device_remove_file(adev
->dev
, &dev_attr_power_dpm_force_performance_level
);
729 void amdgpu_pm_compute_clocks(struct amdgpu_device
*adev
)
731 struct drm_device
*ddev
= adev
->ddev
;
732 struct drm_crtc
*crtc
;
733 struct amdgpu_crtc
*amdgpu_crtc
;
735 if (!adev
->pm
.dpm_enabled
)
738 mutex_lock(&adev
->pm
.mutex
);
740 /* update active crtc counts */
741 adev
->pm
.dpm
.new_active_crtcs
= 0;
742 adev
->pm
.dpm
.new_active_crtc_count
= 0;
743 if (adev
->mode_info
.num_crtc
&& adev
->mode_info
.mode_config_initialized
) {
744 list_for_each_entry(crtc
,
745 &ddev
->mode_config
.crtc_list
, head
) {
746 amdgpu_crtc
= to_amdgpu_crtc(crtc
);
748 adev
->pm
.dpm
.new_active_crtcs
|= (1 << amdgpu_crtc
->crtc_id
);
749 adev
->pm
.dpm
.new_active_crtc_count
++;
754 /* update battery/ac status */
755 if (power_supply_is_system_supplied() > 0)
756 adev
->pm
.dpm
.ac_power
= true;
758 adev
->pm
.dpm
.ac_power
= false;
760 amdgpu_dpm_change_power_state_locked(adev
);
762 mutex_unlock(&adev
->pm
.mutex
);
769 #if defined(CONFIG_DEBUG_FS)
771 static int amdgpu_debugfs_pm_info(struct seq_file
*m
, void *data
)
773 struct drm_info_node
*node
= (struct drm_info_node
*) m
->private;
774 struct drm_device
*dev
= node
->minor
->dev
;
775 struct amdgpu_device
*adev
= dev
->dev_private
;
777 if (adev
->pm
.dpm_enabled
) {
778 mutex_lock(&adev
->pm
.mutex
);
779 if (adev
->pm
.funcs
->debugfs_print_current_performance_level
)
780 amdgpu_dpm_debugfs_print_current_performance_level(adev
, m
);
782 seq_printf(m
, "Debugfs support not implemented for this asic\n");
783 mutex_unlock(&adev
->pm
.mutex
);
789 static struct drm_info_list amdgpu_pm_info_list
[] = {
790 {"amdgpu_pm_info", amdgpu_debugfs_pm_info
, 0, NULL
},
794 static int amdgpu_debugfs_pm_init(struct amdgpu_device
*adev
)
796 #if defined(CONFIG_DEBUG_FS)
797 return amdgpu_debugfs_add_files(adev
, amdgpu_pm_info_list
, ARRAY_SIZE(amdgpu_pm_info_list
));