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>
27 #include <linux/acpi.h>
29 #include <linux/power_supply.h>
30 #include <linux/hwmon.h>
31 #include <linux/hwmon-sysfs.h>
33 #define RADEON_IDLE_LOOP_MS 100
34 #define RADEON_RECLOCK_DELAY_MS 200
35 #define RADEON_WAIT_VBLANK_TIMEOUT 200
36 #define RADEON_WAIT_IDLE_TIMEOUT 200
38 static const char *radeon_pm_state_type_name
[5] = {
46 static void radeon_dynpm_idle_work_handler(struct work_struct
*work
);
47 static int radeon_debugfs_pm_init(struct radeon_device
*rdev
);
48 static bool radeon_pm_in_vbl(struct radeon_device
*rdev
);
49 static bool radeon_pm_debug_check_in_vbl(struct radeon_device
*rdev
, bool finish
);
50 static void radeon_pm_update_profile(struct radeon_device
*rdev
);
51 static void radeon_pm_set_clocks(struct radeon_device
*rdev
);
53 #define ACPI_AC_CLASS "ac_adapter"
56 static int radeon_acpi_event(struct notifier_block
*nb
,
60 struct radeon_device
*rdev
= container_of(nb
, struct radeon_device
, acpi_nb
);
61 struct acpi_bus_event
*entry
= (struct acpi_bus_event
*)data
;
63 if (strcmp(entry
->device_class
, ACPI_AC_CLASS
) == 0) {
64 if (power_supply_is_system_supplied() > 0)
65 DRM_DEBUG_DRIVER("pm: AC\n");
67 DRM_DEBUG_DRIVER("pm: DC\n");
69 if (rdev
->pm
.pm_method
== PM_METHOD_PROFILE
) {
70 if (rdev
->pm
.profile
== PM_PROFILE_AUTO
) {
71 mutex_lock(&rdev
->pm
.mutex
);
72 radeon_pm_update_profile(rdev
);
73 radeon_pm_set_clocks(rdev
);
74 mutex_unlock(&rdev
->pm
.mutex
);
83 static void radeon_pm_update_profile(struct radeon_device
*rdev
)
85 switch (rdev
->pm
.profile
) {
86 case PM_PROFILE_DEFAULT
:
87 rdev
->pm
.profile_index
= PM_PROFILE_DEFAULT_IDX
;
90 if (power_supply_is_system_supplied() > 0) {
91 if (rdev
->pm
.active_crtc_count
> 1)
92 rdev
->pm
.profile_index
= PM_PROFILE_HIGH_MH_IDX
;
94 rdev
->pm
.profile_index
= PM_PROFILE_HIGH_SH_IDX
;
96 if (rdev
->pm
.active_crtc_count
> 1)
97 rdev
->pm
.profile_index
= PM_PROFILE_MID_MH_IDX
;
99 rdev
->pm
.profile_index
= PM_PROFILE_MID_SH_IDX
;
103 if (rdev
->pm
.active_crtc_count
> 1)
104 rdev
->pm
.profile_index
= PM_PROFILE_LOW_MH_IDX
;
106 rdev
->pm
.profile_index
= PM_PROFILE_LOW_SH_IDX
;
109 if (rdev
->pm
.active_crtc_count
> 1)
110 rdev
->pm
.profile_index
= PM_PROFILE_MID_MH_IDX
;
112 rdev
->pm
.profile_index
= PM_PROFILE_MID_SH_IDX
;
114 case PM_PROFILE_HIGH
:
115 if (rdev
->pm
.active_crtc_count
> 1)
116 rdev
->pm
.profile_index
= PM_PROFILE_HIGH_MH_IDX
;
118 rdev
->pm
.profile_index
= PM_PROFILE_HIGH_SH_IDX
;
122 if (rdev
->pm
.active_crtc_count
== 0) {
123 rdev
->pm
.requested_power_state_index
=
124 rdev
->pm
.profiles
[rdev
->pm
.profile_index
].dpms_off_ps_idx
;
125 rdev
->pm
.requested_clock_mode_index
=
126 rdev
->pm
.profiles
[rdev
->pm
.profile_index
].dpms_off_cm_idx
;
128 rdev
->pm
.requested_power_state_index
=
129 rdev
->pm
.profiles
[rdev
->pm
.profile_index
].dpms_on_ps_idx
;
130 rdev
->pm
.requested_clock_mode_index
=
131 rdev
->pm
.profiles
[rdev
->pm
.profile_index
].dpms_on_cm_idx
;
135 static void radeon_unmap_vram_bos(struct radeon_device
*rdev
)
137 struct radeon_bo
*bo
, *n
;
139 if (list_empty(&rdev
->gem
.objects
))
142 list_for_each_entry_safe(bo
, n
, &rdev
->gem
.objects
, list
) {
143 if (bo
->tbo
.mem
.mem_type
== TTM_PL_VRAM
)
144 ttm_bo_unmap_virtual(&bo
->tbo
);
148 static void radeon_sync_with_vblank(struct radeon_device
*rdev
)
150 if (rdev
->pm
.active_crtcs
) {
151 rdev
->pm
.vblank_sync
= false;
153 rdev
->irq
.vblank_queue
, rdev
->pm
.vblank_sync
,
154 msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT
));
158 static void radeon_set_power_state(struct radeon_device
*rdev
)
161 bool misc_after
= false;
163 if ((rdev
->pm
.requested_clock_mode_index
== rdev
->pm
.current_clock_mode_index
) &&
164 (rdev
->pm
.requested_power_state_index
== rdev
->pm
.current_power_state_index
))
167 if (radeon_gui_idle(rdev
)) {
168 sclk
= rdev
->pm
.power_state
[rdev
->pm
.requested_power_state_index
].
169 clock_info
[rdev
->pm
.requested_clock_mode_index
].sclk
;
170 if (sclk
> rdev
->clock
.default_sclk
)
171 sclk
= rdev
->clock
.default_sclk
;
173 mclk
= rdev
->pm
.power_state
[rdev
->pm
.requested_power_state_index
].
174 clock_info
[rdev
->pm
.requested_clock_mode_index
].mclk
;
175 if (mclk
> rdev
->clock
.default_mclk
)
176 mclk
= rdev
->clock
.default_mclk
;
178 /* upvolt before raising clocks, downvolt after lowering clocks */
179 if (sclk
< rdev
->pm
.current_sclk
)
182 radeon_sync_with_vblank(rdev
);
184 if (rdev
->pm
.pm_method
== PM_METHOD_DYNPM
) {
185 if (!radeon_pm_in_vbl(rdev
))
189 radeon_pm_prepare(rdev
);
192 /* voltage, pcie lanes, etc.*/
193 radeon_pm_misc(rdev
);
195 /* set engine clock */
196 if (sclk
!= rdev
->pm
.current_sclk
) {
197 radeon_pm_debug_check_in_vbl(rdev
, false);
198 radeon_set_engine_clock(rdev
, sclk
);
199 radeon_pm_debug_check_in_vbl(rdev
, true);
200 rdev
->pm
.current_sclk
= sclk
;
201 DRM_DEBUG_DRIVER("Setting: e: %d\n", sclk
);
204 /* set memory clock */
205 if (rdev
->asic
->set_memory_clock
&& (mclk
!= rdev
->pm
.current_mclk
)) {
206 radeon_pm_debug_check_in_vbl(rdev
, false);
207 radeon_set_memory_clock(rdev
, mclk
);
208 radeon_pm_debug_check_in_vbl(rdev
, true);
209 rdev
->pm
.current_mclk
= mclk
;
210 DRM_DEBUG_DRIVER("Setting: m: %d\n", mclk
);
214 /* voltage, pcie lanes, etc.*/
215 radeon_pm_misc(rdev
);
217 radeon_pm_finish(rdev
);
219 rdev
->pm
.current_power_state_index
= rdev
->pm
.requested_power_state_index
;
220 rdev
->pm
.current_clock_mode_index
= rdev
->pm
.requested_clock_mode_index
;
222 DRM_DEBUG_DRIVER("pm: GUI not idle!!!\n");
225 static void radeon_pm_set_clocks(struct radeon_device
*rdev
)
229 /* no need to take locks, etc. if nothing's going to change */
230 if ((rdev
->pm
.requested_clock_mode_index
== rdev
->pm
.current_clock_mode_index
) &&
231 (rdev
->pm
.requested_power_state_index
== rdev
->pm
.current_power_state_index
))
234 mutex_lock(&rdev
->ddev
->struct_mutex
);
235 mutex_lock(&rdev
->vram_mutex
);
236 mutex_lock(&rdev
->cp
.mutex
);
238 /* gui idle int has issues on older chips it seems */
239 if (rdev
->family
>= CHIP_R600
) {
240 if (rdev
->irq
.installed
) {
241 /* wait for GPU idle */
242 rdev
->pm
.gui_idle
= false;
243 rdev
->irq
.gui_idle
= true;
244 radeon_irq_set(rdev
);
245 wait_event_interruptible_timeout(
246 rdev
->irq
.idle_queue
, rdev
->pm
.gui_idle
,
247 msecs_to_jiffies(RADEON_WAIT_IDLE_TIMEOUT
));
248 rdev
->irq
.gui_idle
= false;
249 radeon_irq_set(rdev
);
252 if (rdev
->cp
.ready
) {
253 struct radeon_fence
*fence
;
254 radeon_ring_alloc(rdev
, 64);
255 radeon_fence_create(rdev
, &fence
);
256 radeon_fence_emit(rdev
, fence
);
257 radeon_ring_commit(rdev
);
258 radeon_fence_wait(fence
, false);
259 radeon_fence_unref(&fence
);
262 radeon_unmap_vram_bos(rdev
);
264 if (rdev
->irq
.installed
) {
265 for (i
= 0; i
< rdev
->num_crtc
; i
++) {
266 if (rdev
->pm
.active_crtcs
& (1 << i
)) {
267 rdev
->pm
.req_vblank
|= (1 << i
);
268 drm_vblank_get(rdev
->ddev
, i
);
273 radeon_set_power_state(rdev
);
275 if (rdev
->irq
.installed
) {
276 for (i
= 0; i
< rdev
->num_crtc
; i
++) {
277 if (rdev
->pm
.req_vblank
& (1 << i
)) {
278 rdev
->pm
.req_vblank
&= ~(1 << i
);
279 drm_vblank_put(rdev
->ddev
, i
);
284 /* update display watermarks based on new power state */
285 radeon_update_bandwidth_info(rdev
);
286 if (rdev
->pm
.active_crtc_count
)
287 radeon_bandwidth_update(rdev
);
289 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_NONE
;
291 mutex_unlock(&rdev
->cp
.mutex
);
292 mutex_unlock(&rdev
->vram_mutex
);
293 mutex_unlock(&rdev
->ddev
->struct_mutex
);
296 static void radeon_pm_print_states(struct radeon_device
*rdev
)
299 struct radeon_power_state
*power_state
;
300 struct radeon_pm_clock_info
*clock_info
;
302 DRM_DEBUG_DRIVER("%d Power State(s)\n", rdev
->pm
.num_power_states
);
303 for (i
= 0; i
< rdev
->pm
.num_power_states
; i
++) {
304 power_state
= &rdev
->pm
.power_state
[i
];
305 DRM_DEBUG_DRIVER("State %d: %s\n", i
,
306 radeon_pm_state_type_name
[power_state
->type
]);
307 if (i
== rdev
->pm
.default_power_state_index
)
308 DRM_DEBUG_DRIVER("\tDefault");
309 if ((rdev
->flags
& RADEON_IS_PCIE
) && !(rdev
->flags
& RADEON_IS_IGP
))
310 DRM_DEBUG_DRIVER("\t%d PCIE Lanes\n", power_state
->pcie_lanes
);
311 if (power_state
->flags
& RADEON_PM_STATE_SINGLE_DISPLAY_ONLY
)
312 DRM_DEBUG_DRIVER("\tSingle display only\n");
313 DRM_DEBUG_DRIVER("\t%d Clock Mode(s)\n", power_state
->num_clock_modes
);
314 for (j
= 0; j
< power_state
->num_clock_modes
; j
++) {
315 clock_info
= &(power_state
->clock_info
[j
]);
316 if (rdev
->flags
& RADEON_IS_IGP
)
317 DRM_DEBUG_DRIVER("\t\t%d e: %d%s\n",
319 clock_info
->sclk
* 10,
320 clock_info
->flags
& RADEON_PM_MODE_NO_DISPLAY
? "\tNo display only" : "");
322 DRM_DEBUG_DRIVER("\t\t%d e: %d\tm: %d\tv: %d%s\n",
324 clock_info
->sclk
* 10,
325 clock_info
->mclk
* 10,
326 clock_info
->voltage
.voltage
,
327 clock_info
->flags
& RADEON_PM_MODE_NO_DISPLAY
? "\tNo display only" : "");
332 static ssize_t
radeon_get_pm_profile(struct device
*dev
,
333 struct device_attribute
*attr
,
336 struct drm_device
*ddev
= pci_get_drvdata(to_pci_dev(dev
));
337 struct radeon_device
*rdev
= ddev
->dev_private
;
338 int cp
= rdev
->pm
.profile
;
340 return snprintf(buf
, PAGE_SIZE
, "%s\n",
341 (cp
== PM_PROFILE_AUTO
) ? "auto" :
342 (cp
== PM_PROFILE_LOW
) ? "low" :
343 (cp
== PM_PROFILE_MID
) ? "mid" :
344 (cp
== PM_PROFILE_HIGH
) ? "high" : "default");
347 static ssize_t
radeon_set_pm_profile(struct device
*dev
,
348 struct device_attribute
*attr
,
352 struct drm_device
*ddev
= pci_get_drvdata(to_pci_dev(dev
));
353 struct radeon_device
*rdev
= ddev
->dev_private
;
355 mutex_lock(&rdev
->pm
.mutex
);
356 if (rdev
->pm
.pm_method
== PM_METHOD_PROFILE
) {
357 if (strncmp("default", buf
, strlen("default")) == 0)
358 rdev
->pm
.profile
= PM_PROFILE_DEFAULT
;
359 else if (strncmp("auto", buf
, strlen("auto")) == 0)
360 rdev
->pm
.profile
= PM_PROFILE_AUTO
;
361 else if (strncmp("low", buf
, strlen("low")) == 0)
362 rdev
->pm
.profile
= PM_PROFILE_LOW
;
363 else if (strncmp("mid", buf
, strlen("mid")) == 0)
364 rdev
->pm
.profile
= PM_PROFILE_MID
;
365 else if (strncmp("high", buf
, strlen("high")) == 0)
366 rdev
->pm
.profile
= PM_PROFILE_HIGH
;
368 DRM_ERROR("invalid power profile!\n");
371 radeon_pm_update_profile(rdev
);
372 radeon_pm_set_clocks(rdev
);
375 mutex_unlock(&rdev
->pm
.mutex
);
380 static ssize_t
radeon_get_pm_method(struct device
*dev
,
381 struct device_attribute
*attr
,
384 struct drm_device
*ddev
= pci_get_drvdata(to_pci_dev(dev
));
385 struct radeon_device
*rdev
= ddev
->dev_private
;
386 int pm
= rdev
->pm
.pm_method
;
388 return snprintf(buf
, PAGE_SIZE
, "%s\n",
389 (pm
== PM_METHOD_DYNPM
) ? "dynpm" : "profile");
392 static ssize_t
radeon_set_pm_method(struct device
*dev
,
393 struct device_attribute
*attr
,
397 struct drm_device
*ddev
= pci_get_drvdata(to_pci_dev(dev
));
398 struct radeon_device
*rdev
= ddev
->dev_private
;
401 if (strncmp("dynpm", buf
, strlen("dynpm")) == 0) {
402 mutex_lock(&rdev
->pm
.mutex
);
403 rdev
->pm
.pm_method
= PM_METHOD_DYNPM
;
404 rdev
->pm
.dynpm_state
= DYNPM_STATE_PAUSED
;
405 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_DEFAULT
;
406 mutex_unlock(&rdev
->pm
.mutex
);
407 } else if (strncmp("profile", buf
, strlen("profile")) == 0) {
408 bool flush_wq
= false;
410 mutex_lock(&rdev
->pm
.mutex
);
411 if (rdev
->pm
.pm_method
== PM_METHOD_DYNPM
) {
412 cancel_delayed_work(&rdev
->pm
.dynpm_idle_work
);
416 rdev
->pm
.dynpm_state
= DYNPM_STATE_DISABLED
;
417 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_NONE
;
418 rdev
->pm
.pm_method
= PM_METHOD_PROFILE
;
419 mutex_unlock(&rdev
->pm
.mutex
);
421 flush_workqueue(rdev
->wq
);
423 DRM_ERROR("invalid power method!\n");
426 radeon_pm_compute_clocks(rdev
);
431 static DEVICE_ATTR(power_profile
, S_IRUGO
| S_IWUSR
, radeon_get_pm_profile
, radeon_set_pm_profile
);
432 static DEVICE_ATTR(power_method
, S_IRUGO
| S_IWUSR
, radeon_get_pm_method
, radeon_set_pm_method
);
434 static ssize_t
radeon_hwmon_show_temp(struct device
*dev
,
435 struct device_attribute
*attr
,
438 struct drm_device
*ddev
= pci_get_drvdata(to_pci_dev(dev
));
439 struct radeon_device
*rdev
= ddev
->dev_private
;
442 switch (rdev
->pm
.int_thermal_type
) {
443 case THERMAL_TYPE_RV6XX
:
444 temp
= rv6xx_get_temp(rdev
);
446 case THERMAL_TYPE_RV770
:
447 temp
= rv770_get_temp(rdev
);
449 case THERMAL_TYPE_EVERGREEN
:
450 temp
= evergreen_get_temp(rdev
);
457 return snprintf(buf
, PAGE_SIZE
, "%d\n", temp
);
460 static ssize_t
radeon_hwmon_show_name(struct device
*dev
,
461 struct device_attribute
*attr
,
464 return sprintf(buf
, "radeon\n");
467 static SENSOR_DEVICE_ATTR(temp1_input
, S_IRUGO
, radeon_hwmon_show_temp
, NULL
, 0);
468 static SENSOR_DEVICE_ATTR(name
, S_IRUGO
, radeon_hwmon_show_name
, NULL
, 0);
470 static struct attribute
*hwmon_attributes
[] = {
471 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
472 &sensor_dev_attr_name
.dev_attr
.attr
,
476 static const struct attribute_group hwmon_attrgroup
= {
477 .attrs
= hwmon_attributes
,
480 static int radeon_hwmon_init(struct radeon_device
*rdev
)
484 rdev
->pm
.int_hwmon_dev
= NULL
;
486 switch (rdev
->pm
.int_thermal_type
) {
487 case THERMAL_TYPE_RV6XX
:
488 case THERMAL_TYPE_RV770
:
489 case THERMAL_TYPE_EVERGREEN
:
490 rdev
->pm
.int_hwmon_dev
= hwmon_device_register(rdev
->dev
);
491 if (IS_ERR(rdev
->pm
.int_hwmon_dev
)) {
492 err
= PTR_ERR(rdev
->pm
.int_hwmon_dev
);
494 "Unable to register hwmon device: %d\n", err
);
497 dev_set_drvdata(rdev
->pm
.int_hwmon_dev
, rdev
->ddev
);
498 err
= sysfs_create_group(&rdev
->pm
.int_hwmon_dev
->kobj
,
502 "Unable to create hwmon sysfs file: %d\n", err
);
503 hwmon_device_unregister(rdev
->dev
);
513 static void radeon_hwmon_fini(struct radeon_device
*rdev
)
515 if (rdev
->pm
.int_hwmon_dev
) {
516 sysfs_remove_group(&rdev
->pm
.int_hwmon_dev
->kobj
, &hwmon_attrgroup
);
517 hwmon_device_unregister(rdev
->pm
.int_hwmon_dev
);
521 void radeon_pm_suspend(struct radeon_device
*rdev
)
523 bool flush_wq
= false;
525 mutex_lock(&rdev
->pm
.mutex
);
526 if (rdev
->pm
.pm_method
== PM_METHOD_DYNPM
) {
527 cancel_delayed_work(&rdev
->pm
.dynpm_idle_work
);
528 if (rdev
->pm
.dynpm_state
== DYNPM_STATE_ACTIVE
)
529 rdev
->pm
.dynpm_state
= DYNPM_STATE_SUSPENDED
;
532 mutex_unlock(&rdev
->pm
.mutex
);
534 flush_workqueue(rdev
->wq
);
537 void radeon_pm_resume(struct radeon_device
*rdev
)
539 /* asic init will reset the default power state */
540 mutex_lock(&rdev
->pm
.mutex
);
541 rdev
->pm
.current_power_state_index
= rdev
->pm
.default_power_state_index
;
542 rdev
->pm
.current_clock_mode_index
= 0;
543 rdev
->pm
.current_sclk
= rdev
->clock
.default_sclk
;
544 rdev
->pm
.current_mclk
= rdev
->clock
.default_mclk
;
545 rdev
->pm
.current_vddc
= rdev
->pm
.power_state
[rdev
->pm
.default_power_state_index
].clock_info
[0].voltage
.voltage
;
546 if (rdev
->pm
.pm_method
== PM_METHOD_DYNPM
547 && rdev
->pm
.dynpm_state
== DYNPM_STATE_SUSPENDED
) {
548 rdev
->pm
.dynpm_state
= DYNPM_STATE_ACTIVE
;
549 queue_delayed_work(rdev
->wq
, &rdev
->pm
.dynpm_idle_work
,
550 msecs_to_jiffies(RADEON_IDLE_LOOP_MS
));
552 mutex_unlock(&rdev
->pm
.mutex
);
553 radeon_pm_compute_clocks(rdev
);
556 int radeon_pm_init(struct radeon_device
*rdev
)
560 /* default to profile method */
561 rdev
->pm
.pm_method
= PM_METHOD_PROFILE
;
562 rdev
->pm
.profile
= PM_PROFILE_DEFAULT
;
563 rdev
->pm
.dynpm_state
= DYNPM_STATE_DISABLED
;
564 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_NONE
;
565 rdev
->pm
.dynpm_can_upclock
= true;
566 rdev
->pm
.dynpm_can_downclock
= true;
567 rdev
->pm
.current_sclk
= rdev
->clock
.default_sclk
;
568 rdev
->pm
.current_mclk
= rdev
->clock
.default_mclk
;
569 rdev
->pm
.int_thermal_type
= THERMAL_TYPE_NONE
;
572 if (rdev
->is_atom_bios
)
573 radeon_atombios_get_power_modes(rdev
);
575 radeon_combios_get_power_modes(rdev
);
576 radeon_pm_print_states(rdev
);
577 radeon_pm_init_profile(rdev
);
580 /* set up the internal thermal sensor if applicable */
581 ret
= radeon_hwmon_init(rdev
);
584 if (rdev
->pm
.num_power_states
> 1) {
585 /* where's the best place to put these? */
586 ret
= device_create_file(rdev
->dev
, &dev_attr_power_profile
);
588 DRM_ERROR("failed to create device file for power profile\n");
589 ret
= device_create_file(rdev
->dev
, &dev_attr_power_method
);
591 DRM_ERROR("failed to create device file for power method\n");
594 rdev
->acpi_nb
.notifier_call
= radeon_acpi_event
;
595 register_acpi_notifier(&rdev
->acpi_nb
);
597 INIT_DELAYED_WORK(&rdev
->pm
.dynpm_idle_work
, radeon_dynpm_idle_work_handler
);
599 if (radeon_debugfs_pm_init(rdev
)) {
600 DRM_ERROR("Failed to register debugfs file for PM!\n");
603 DRM_INFO("radeon: power management initialized\n");
609 void radeon_pm_fini(struct radeon_device
*rdev
)
611 if (rdev
->pm
.num_power_states
> 1) {
612 bool flush_wq
= false;
614 mutex_lock(&rdev
->pm
.mutex
);
615 if (rdev
->pm
.pm_method
== PM_METHOD_PROFILE
) {
616 rdev
->pm
.profile
= PM_PROFILE_DEFAULT
;
617 radeon_pm_update_profile(rdev
);
618 radeon_pm_set_clocks(rdev
);
619 } else if (rdev
->pm
.pm_method
== PM_METHOD_DYNPM
) {
621 cancel_delayed_work(&rdev
->pm
.dynpm_idle_work
);
623 /* reset default clocks */
624 rdev
->pm
.dynpm_state
= DYNPM_STATE_DISABLED
;
625 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_DEFAULT
;
626 radeon_pm_set_clocks(rdev
);
628 mutex_unlock(&rdev
->pm
.mutex
);
630 flush_workqueue(rdev
->wq
);
632 device_remove_file(rdev
->dev
, &dev_attr_power_profile
);
633 device_remove_file(rdev
->dev
, &dev_attr_power_method
);
635 unregister_acpi_notifier(&rdev
->acpi_nb
);
639 radeon_hwmon_fini(rdev
);
642 void radeon_pm_compute_clocks(struct radeon_device
*rdev
)
644 struct drm_device
*ddev
= rdev
->ddev
;
645 struct drm_crtc
*crtc
;
646 struct radeon_crtc
*radeon_crtc
;
648 if (rdev
->pm
.num_power_states
< 2)
651 mutex_lock(&rdev
->pm
.mutex
);
653 rdev
->pm
.active_crtcs
= 0;
654 rdev
->pm
.active_crtc_count
= 0;
655 list_for_each_entry(crtc
,
656 &ddev
->mode_config
.crtc_list
, head
) {
657 radeon_crtc
= to_radeon_crtc(crtc
);
658 if (radeon_crtc
->enabled
) {
659 rdev
->pm
.active_crtcs
|= (1 << radeon_crtc
->crtc_id
);
660 rdev
->pm
.active_crtc_count
++;
664 if (rdev
->pm
.pm_method
== PM_METHOD_PROFILE
) {
665 radeon_pm_update_profile(rdev
);
666 radeon_pm_set_clocks(rdev
);
667 } else if (rdev
->pm
.pm_method
== PM_METHOD_DYNPM
) {
668 if (rdev
->pm
.dynpm_state
!= DYNPM_STATE_DISABLED
) {
669 if (rdev
->pm
.active_crtc_count
> 1) {
670 if (rdev
->pm
.dynpm_state
== DYNPM_STATE_ACTIVE
) {
671 cancel_delayed_work(&rdev
->pm
.dynpm_idle_work
);
673 rdev
->pm
.dynpm_state
= DYNPM_STATE_PAUSED
;
674 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_DEFAULT
;
675 radeon_pm_get_dynpm_state(rdev
);
676 radeon_pm_set_clocks(rdev
);
678 DRM_DEBUG_DRIVER("radeon: dynamic power management deactivated\n");
680 } else if (rdev
->pm
.active_crtc_count
== 1) {
681 /* TODO: Increase clocks if needed for current mode */
683 if (rdev
->pm
.dynpm_state
== DYNPM_STATE_MINIMUM
) {
684 rdev
->pm
.dynpm_state
= DYNPM_STATE_ACTIVE
;
685 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_UPCLOCK
;
686 radeon_pm_get_dynpm_state(rdev
);
687 radeon_pm_set_clocks(rdev
);
689 queue_delayed_work(rdev
->wq
, &rdev
->pm
.dynpm_idle_work
,
690 msecs_to_jiffies(RADEON_IDLE_LOOP_MS
));
691 } else if (rdev
->pm
.dynpm_state
== DYNPM_STATE_PAUSED
) {
692 rdev
->pm
.dynpm_state
= DYNPM_STATE_ACTIVE
;
693 queue_delayed_work(rdev
->wq
, &rdev
->pm
.dynpm_idle_work
,
694 msecs_to_jiffies(RADEON_IDLE_LOOP_MS
));
695 DRM_DEBUG_DRIVER("radeon: dynamic power management activated\n");
697 } else { /* count == 0 */
698 if (rdev
->pm
.dynpm_state
!= DYNPM_STATE_MINIMUM
) {
699 cancel_delayed_work(&rdev
->pm
.dynpm_idle_work
);
701 rdev
->pm
.dynpm_state
= DYNPM_STATE_MINIMUM
;
702 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_MINIMUM
;
703 radeon_pm_get_dynpm_state(rdev
);
704 radeon_pm_set_clocks(rdev
);
710 mutex_unlock(&rdev
->pm
.mutex
);
713 static bool radeon_pm_in_vbl(struct radeon_device
*rdev
)
715 u32 stat_crtc
= 0, vbl
= 0, position
= 0;
718 if (ASIC_IS_DCE4(rdev
)) {
719 if (rdev
->pm
.active_crtcs
& (1 << 0)) {
720 vbl
= RREG32(EVERGREEN_CRTC_V_BLANK_START_END
+
721 EVERGREEN_CRTC0_REGISTER_OFFSET
) & 0xfff;
722 position
= RREG32(EVERGREEN_CRTC_STATUS_POSITION
+
723 EVERGREEN_CRTC0_REGISTER_OFFSET
) & 0xfff;
725 if (rdev
->pm
.active_crtcs
& (1 << 1)) {
726 vbl
= RREG32(EVERGREEN_CRTC_V_BLANK_START_END
+
727 EVERGREEN_CRTC1_REGISTER_OFFSET
) & 0xfff;
728 position
= RREG32(EVERGREEN_CRTC_STATUS_POSITION
+
729 EVERGREEN_CRTC1_REGISTER_OFFSET
) & 0xfff;
731 if (rdev
->pm
.active_crtcs
& (1 << 2)) {
732 vbl
= RREG32(EVERGREEN_CRTC_V_BLANK_START_END
+
733 EVERGREEN_CRTC2_REGISTER_OFFSET
) & 0xfff;
734 position
= RREG32(EVERGREEN_CRTC_STATUS_POSITION
+
735 EVERGREEN_CRTC2_REGISTER_OFFSET
) & 0xfff;
737 if (rdev
->pm
.active_crtcs
& (1 << 3)) {
738 vbl
= RREG32(EVERGREEN_CRTC_V_BLANK_START_END
+
739 EVERGREEN_CRTC3_REGISTER_OFFSET
) & 0xfff;
740 position
= RREG32(EVERGREEN_CRTC_STATUS_POSITION
+
741 EVERGREEN_CRTC3_REGISTER_OFFSET
) & 0xfff;
743 if (rdev
->pm
.active_crtcs
& (1 << 4)) {
744 vbl
= RREG32(EVERGREEN_CRTC_V_BLANK_START_END
+
745 EVERGREEN_CRTC4_REGISTER_OFFSET
) & 0xfff;
746 position
= RREG32(EVERGREEN_CRTC_STATUS_POSITION
+
747 EVERGREEN_CRTC4_REGISTER_OFFSET
) & 0xfff;
749 if (rdev
->pm
.active_crtcs
& (1 << 5)) {
750 vbl
= RREG32(EVERGREEN_CRTC_V_BLANK_START_END
+
751 EVERGREEN_CRTC5_REGISTER_OFFSET
) & 0xfff;
752 position
= RREG32(EVERGREEN_CRTC_STATUS_POSITION
+
753 EVERGREEN_CRTC5_REGISTER_OFFSET
) & 0xfff;
755 } else if (ASIC_IS_AVIVO(rdev
)) {
756 if (rdev
->pm
.active_crtcs
& (1 << 0)) {
757 vbl
= RREG32(AVIVO_D1CRTC_V_BLANK_START_END
) & 0xfff;
758 position
= RREG32(AVIVO_D1CRTC_STATUS_POSITION
) & 0xfff;
760 if (rdev
->pm
.active_crtcs
& (1 << 1)) {
761 vbl
= RREG32(AVIVO_D2CRTC_V_BLANK_START_END
) & 0xfff;
762 position
= RREG32(AVIVO_D2CRTC_STATUS_POSITION
) & 0xfff;
764 if (position
< vbl
&& position
> 1)
767 if (rdev
->pm
.active_crtcs
& (1 << 0)) {
768 stat_crtc
= RREG32(RADEON_CRTC_STATUS
);
769 if (!(stat_crtc
& 1))
772 if (rdev
->pm
.active_crtcs
& (1 << 1)) {
773 stat_crtc
= RREG32(RADEON_CRTC2_STATUS
);
774 if (!(stat_crtc
& 1))
779 if (position
< vbl
&& position
> 1)
785 static bool radeon_pm_debug_check_in_vbl(struct radeon_device
*rdev
, bool finish
)
788 bool in_vbl
= radeon_pm_in_vbl(rdev
);
791 DRM_DEBUG_DRIVER("not in vbl for pm change %08x at %s\n", stat_crtc
,
792 finish
? "exit" : "entry");
796 static void radeon_dynpm_idle_work_handler(struct work_struct
*work
)
798 struct radeon_device
*rdev
;
800 rdev
= container_of(work
, struct radeon_device
,
801 pm
.dynpm_idle_work
.work
);
803 resched
= ttm_bo_lock_delayed_workqueue(&rdev
->mman
.bdev
);
804 mutex_lock(&rdev
->pm
.mutex
);
805 if (rdev
->pm
.dynpm_state
== DYNPM_STATE_ACTIVE
) {
806 unsigned long irq_flags
;
807 int not_processed
= 0;
809 read_lock_irqsave(&rdev
->fence_drv
.lock
, irq_flags
);
810 if (!list_empty(&rdev
->fence_drv
.emited
)) {
811 struct list_head
*ptr
;
812 list_for_each(ptr
, &rdev
->fence_drv
.emited
) {
813 /* count up to 3, that's enought info */
814 if (++not_processed
>= 3)
818 read_unlock_irqrestore(&rdev
->fence_drv
.lock
, irq_flags
);
820 if (not_processed
>= 3) { /* should upclock */
821 if (rdev
->pm
.dynpm_planned_action
== DYNPM_ACTION_DOWNCLOCK
) {
822 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_NONE
;
823 } else if (rdev
->pm
.dynpm_planned_action
== DYNPM_ACTION_NONE
&&
824 rdev
->pm
.dynpm_can_upclock
) {
825 rdev
->pm
.dynpm_planned_action
=
826 DYNPM_ACTION_UPCLOCK
;
827 rdev
->pm
.dynpm_action_timeout
= jiffies
+
828 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS
);
830 } else if (not_processed
== 0) { /* should downclock */
831 if (rdev
->pm
.dynpm_planned_action
== DYNPM_ACTION_UPCLOCK
) {
832 rdev
->pm
.dynpm_planned_action
= DYNPM_ACTION_NONE
;
833 } else if (rdev
->pm
.dynpm_planned_action
== DYNPM_ACTION_NONE
&&
834 rdev
->pm
.dynpm_can_downclock
) {
835 rdev
->pm
.dynpm_planned_action
=
836 DYNPM_ACTION_DOWNCLOCK
;
837 rdev
->pm
.dynpm_action_timeout
= jiffies
+
838 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS
);
842 /* Note, radeon_pm_set_clocks is called with static_switch set
843 * to false since we want to wait for vbl to avoid flicker.
845 if (rdev
->pm
.dynpm_planned_action
!= DYNPM_ACTION_NONE
&&
846 jiffies
> rdev
->pm
.dynpm_action_timeout
) {
847 radeon_pm_get_dynpm_state(rdev
);
848 radeon_pm_set_clocks(rdev
);
851 queue_delayed_work(rdev
->wq
, &rdev
->pm
.dynpm_idle_work
,
852 msecs_to_jiffies(RADEON_IDLE_LOOP_MS
));
854 mutex_unlock(&rdev
->pm
.mutex
);
855 ttm_bo_unlock_delayed_workqueue(&rdev
->mman
.bdev
, resched
);
861 #if defined(CONFIG_DEBUG_FS)
863 static int radeon_debugfs_pm_info(struct seq_file
*m
, void *data
)
865 struct drm_info_node
*node
= (struct drm_info_node
*) m
->private;
866 struct drm_device
*dev
= node
->minor
->dev
;
867 struct radeon_device
*rdev
= dev
->dev_private
;
869 seq_printf(m
, "default engine clock: %u0 kHz\n", rdev
->clock
.default_sclk
);
870 seq_printf(m
, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev
));
871 seq_printf(m
, "default memory clock: %u0 kHz\n", rdev
->clock
.default_mclk
);
872 if (rdev
->asic
->get_memory_clock
)
873 seq_printf(m
, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev
));
874 if (rdev
->pm
.current_vddc
)
875 seq_printf(m
, "voltage: %u mV\n", rdev
->pm
.current_vddc
);
876 if (rdev
->asic
->get_pcie_lanes
)
877 seq_printf(m
, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev
));
882 static struct drm_info_list radeon_pm_info_list
[] = {
883 {"radeon_pm_info", radeon_debugfs_pm_info
, 0, NULL
},
887 static int radeon_debugfs_pm_init(struct radeon_device
*rdev
)
889 #if defined(CONFIG_DEBUG_FS)
890 return radeon_debugfs_add_files(rdev
, radeon_pm_info_list
, ARRAY_SIZE(radeon_pm_info_list
));