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drm/radeon: make get_temperature functions a callback
[deliverable/linux.git] / drivers / gpu / drm / radeon / radeon_pm.c
CommitLineData
7433874e
RM		 1/*
2 * Permission is hereby granted, free of charge, to any person obtaining a
3 * copy of this software and associated documentation files (the "Software"),
4 * to deal in the Software without restriction, including without limitation
5 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
6 * and/or sell copies of the Software, and to permit persons to whom the
7 * Software is furnished to do so, subject to the following conditions:
8 *
9 * The above copyright notice and this permission notice shall be included in
10 * all copies or substantial portions of the Software.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
15 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
16 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
17 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
18 * OTHER DEALINGS IN THE SOFTWARE.
19 *
20 * Authors: Rafał Miłecki <zajec5@gmail.com>
56278a8e 21 * Alex Deucher <alexdeucher@gmail.com>
7433874e 22 */
760285e7 23#include <drm/drmP.h>
7433874e 24#include "radeon.h"
f735261b 25#include "avivod.h"
8a83ec5e 26#include "atom.h"
ce8f5370 27#include <linux/power_supply.h>
21a8122a
AD		 28#include <linux/hwmon.h>
29#include <linux/hwmon-sysfs.h>
7433874e 30
c913e23a
RM		 31#define RADEON_IDLE_LOOP_MS 100
32#define RADEON_RECLOCK_DELAY_MS 200
73a6d3fc 33#define RADEON_WAIT_VBLANK_TIMEOUT 200
c913e23a 34
f712d0c7 35static const char *radeon_pm_state_type_name[5] = {
eb2c27a0 36 "",
f712d0c7
RM		 37 "Powersave",
38 "Battery",
39 "Balanced",
40 "Performance",
41};
42
ce8f5370 43static void radeon_dynpm_idle_work_handler(struct work_struct *work);
c913e23a 44static int radeon_debugfs_pm_init(struct radeon_device *rdev);
ce8f5370
AD		 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
a4c9e2ee
AD		 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 /* return default if no match */
65 return rdev->pm.default_power_state_index;
66}
67
c4917074 68void radeon_pm_acpi_event_handler(struct radeon_device *rdev)
ce8f5370 69{
c4917074
AD		 70 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
71 if (rdev->pm.profile == PM_PROFILE_AUTO) {
72 mutex_lock(&rdev->pm.mutex);
73 radeon_pm_update_profile(rdev);
74 radeon_pm_set_clocks(rdev);
75 mutex_unlock(&rdev->pm.mutex);
ce8f5370
AD		 76 }
77 }
ce8f5370 78}
ce8f5370
AD		 79
80static void radeon_pm_update_profile(struct radeon_device *rdev)
81{
82 switch (rdev->pm.profile) {
83 case PM_PROFILE_DEFAULT:
84 rdev->pm.profile_index = PM_PROFILE_DEFAULT_IDX;
85 break;
86 case PM_PROFILE_AUTO:
87 if (power_supply_is_system_supplied() > 0) {
88 if (rdev->pm.active_crtc_count > 1)
89 rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
90 else
91 rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
92 } else {
93 if (rdev->pm.active_crtc_count > 1)
c9e75b21 94 rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
ce8f5370 95 else
c9e75b21 96 rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
ce8f5370
AD		 97 }
98 break;
99 case PM_PROFILE_LOW:
100 if (rdev->pm.active_crtc_count > 1)
101 rdev->pm.profile_index = PM_PROFILE_LOW_MH_IDX;
102 else
103 rdev->pm.profile_index = PM_PROFILE_LOW_SH_IDX;
104 break;
c9e75b21
AD		 105 case PM_PROFILE_MID:
106 if (rdev->pm.active_crtc_count > 1)
107 rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
108 else
109 rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
110 break;
ce8f5370
AD		 111 case PM_PROFILE_HIGH:
112 if (rdev->pm.active_crtc_count > 1)
113 rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
114 else
115 rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
116 break;
117 }
118
119 if (rdev->pm.active_crtc_count == 0) {
120 rdev->pm.requested_power_state_index =
121 rdev->pm.profiles[rdev->pm.profile_index].dpms_off_ps_idx;
122 rdev->pm.requested_clock_mode_index =
123 rdev->pm.profiles[rdev->pm.profile_index].dpms_off_cm_idx;
124 } else {
125 rdev->pm.requested_power_state_index =
126 rdev->pm.profiles[rdev->pm.profile_index].dpms_on_ps_idx;
127 rdev->pm.requested_clock_mode_index =
128 rdev->pm.profiles[rdev->pm.profile_index].dpms_on_cm_idx;
129 }
130}
c913e23a 131
5876dd24
MG		 132static void radeon_unmap_vram_bos(struct radeon_device *rdev)
133{
134 struct radeon_bo *bo, *n;
135
136 if (list_empty(&rdev->gem.objects))
137 return;
138
139 list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
140 if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
141 ttm_bo_unmap_virtual(&bo->tbo);
142 }
5876dd24
MG		 143}
144
ce8f5370 145static void radeon_sync_with_vblank(struct radeon_device *rdev)
a424816f 146{
ce8f5370
AD		 147 if (rdev->pm.active_crtcs) {
148 rdev->pm.vblank_sync = false;
149 wait_event_timeout(
150 rdev->irq.vblank_queue, rdev->pm.vblank_sync,
151 msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
152 }
153}
154
155static void radeon_set_power_state(struct radeon_device *rdev)
156{
157 u32 sclk, mclk;
92645879 158 bool misc_after = false;
ce8f5370
AD		 159
160 if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
161 (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
162 return;
163
164 if (radeon_gui_idle(rdev)) {
165 sclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
166 clock_info[rdev->pm.requested_clock_mode_index].sclk;
9ace9f7b
AD		 167 if (sclk > rdev->pm.default_sclk)
168 sclk = rdev->pm.default_sclk;
ce8f5370 169
27810fb2
AD		 170 /* starting with BTC, there is one state that is used for both
171 * MH and SH. Difference is that we always use the high clock index for
7ae764b1 172 * mclk and vddci.
27810fb2
AD		 173 */
174 if ((rdev->pm.pm_method == PM_METHOD_PROFILE) &&
175 (rdev->family >= CHIP_BARTS) &&
176 rdev->pm.active_crtc_count &&
177 ((rdev->pm.profile_index == PM_PROFILE_MID_MH_IDX) ||
178 (rdev->pm.profile_index == PM_PROFILE_LOW_MH_IDX)))
179 mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
180 clock_info[rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx].mclk;
181 else
182 mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
183 clock_info[rdev->pm.requested_clock_mode_index].mclk;
184
9ace9f7b
AD		 185 if (mclk > rdev->pm.default_mclk)
186 mclk = rdev->pm.default_mclk;
ce8f5370 187
92645879
AD		 188 /* upvolt before raising clocks, downvolt after lowering clocks */
189 if (sclk < rdev->pm.current_sclk)
190 misc_after = true;
ce8f5370 191
92645879 192 radeon_sync_with_vblank(rdev);
ce8f5370 193
92645879 194 if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
ce8f5370
AD		 195 if (!radeon_pm_in_vbl(rdev))
196 return;
92645879 197 }
ce8f5370 198
92645879 199 radeon_pm_prepare(rdev);
ce8f5370 200
92645879
AD		 201 if (!misc_after)
202 /* voltage, pcie lanes, etc.*/
203 radeon_pm_misc(rdev);
204
205 /* set engine clock */
206 if (sclk != rdev->pm.current_sclk) {
207 radeon_pm_debug_check_in_vbl(rdev, false);
208 radeon_set_engine_clock(rdev, sclk);
209 radeon_pm_debug_check_in_vbl(rdev, true);
210 rdev->pm.current_sclk = sclk;
d9fdaafb 211 DRM_DEBUG_DRIVER("Setting: e: %d\n", sclk);
92645879
AD		 212 }
213
214 /* set memory clock */
798bcf73 215 if (rdev->asic->pm.set_memory_clock && (mclk != rdev->pm.current_mclk)) {
92645879
AD		 216 radeon_pm_debug_check_in_vbl(rdev, false);
217 radeon_set_memory_clock(rdev, mclk);
218 radeon_pm_debug_check_in_vbl(rdev, true);
219 rdev->pm.current_mclk = mclk;
d9fdaafb 220 DRM_DEBUG_DRIVER("Setting: m: %d\n", mclk);
ce8f5370 221 }
2aba631c 222
92645879
AD		 223 if (misc_after)
224 /* voltage, pcie lanes, etc.*/
225 radeon_pm_misc(rdev);
226
227 radeon_pm_finish(rdev);
228
ce8f5370
AD		 229 rdev->pm.current_power_state_index = rdev->pm.requested_power_state_index;
230 rdev->pm.current_clock_mode_index = rdev->pm.requested_clock_mode_index;
231 } else
d9fdaafb 232 DRM_DEBUG_DRIVER("pm: GUI not idle!!!\n");
ce8f5370
AD		 233}
234
235static void radeon_pm_set_clocks(struct radeon_device *rdev)
236{
5f8f635e 237 int i, r;
c37d230a 238
4e186b2d
AD		 239 /* no need to take locks, etc. if nothing's going to change */
240 if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
241 (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
242 return;
243
612e06ce 244 mutex_lock(&rdev->ddev->struct_mutex);
db7fce39 245 down_write(&rdev->pm.mclk_lock);
d6999bc7 246 mutex_lock(&rdev->ring_lock);
4f3218cb 247
95f5a3ac
AD		 248 /* wait for the rings to drain */
249 for (i = 0; i < RADEON_NUM_RINGS; i++) {
250 struct radeon_ring *ring = &rdev->ring[i];
5f8f635e
JG		 251 if (!ring->ready) {
252 continue;
253 }
254 r = radeon_fence_wait_empty_locked(rdev, i);
255 if (r) {
256 /* needs a GPU reset dont reset here */
257 mutex_unlock(&rdev->ring_lock);
258 up_write(&rdev->pm.mclk_lock);
259 mutex_unlock(&rdev->ddev->struct_mutex);
260 return;
261 }
4f3218cb 262 }
95f5a3ac 263
5876dd24
MG		 264 radeon_unmap_vram_bos(rdev);
265
ce8f5370 266 if (rdev->irq.installed) {
2aba631c
MG		 267 for (i = 0; i < rdev->num_crtc; i++) {
268 if (rdev->pm.active_crtcs & (1 << i)) {
269 rdev->pm.req_vblank |= (1 << i);
270 drm_vblank_get(rdev->ddev, i);
271 }
272 }
273 }
539d2418 274
ce8f5370 275 radeon_set_power_state(rdev);
2aba631c 276
ce8f5370 277 if (rdev->irq.installed) {
2aba631c
MG		 278 for (i = 0; i < rdev->num_crtc; i++) {
279 if (rdev->pm.req_vblank & (1 << i)) {
280 rdev->pm.req_vblank &= ~(1 << i);
281 drm_vblank_put(rdev->ddev, i);
282 }
283 }
284 }
5876dd24 285
a424816f
AD		 286 /* update display watermarks based on new power state */
287 radeon_update_bandwidth_info(rdev);
288 if (rdev->pm.active_crtc_count)
289 radeon_bandwidth_update(rdev);
290
ce8f5370 291 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
2aba631c 292
d6999bc7 293 mutex_unlock(&rdev->ring_lock);
db7fce39 294 up_write(&rdev->pm.mclk_lock);
612e06ce 295 mutex_unlock(&rdev->ddev->struct_mutex);
a424816f
AD		 296}
297
f712d0c7
RM		 298static void radeon_pm_print_states(struct radeon_device *rdev)
299{
300 int i, j;
301 struct radeon_power_state *power_state;
302 struct radeon_pm_clock_info *clock_info;
303
d9fdaafb 304 DRM_DEBUG_DRIVER("%d Power State(s)\n", rdev->pm.num_power_states);
f712d0c7
RM		 305 for (i = 0; i < rdev->pm.num_power_states; i++) {
306 power_state = &rdev->pm.power_state[i];
d9fdaafb 307 DRM_DEBUG_DRIVER("State %d: %s\n", i,
f712d0c7
RM		 308 radeon_pm_state_type_name[power_state->type]);
309 if (i == rdev->pm.default_power_state_index)
d9fdaafb 310 DRM_DEBUG_DRIVER("\tDefault");
f712d0c7 311 if ((rdev->flags & RADEON_IS_PCIE) && !(rdev->flags & RADEON_IS_IGP))
d9fdaafb 312 DRM_DEBUG_DRIVER("\t%d PCIE Lanes\n", power_state->pcie_lanes);
f712d0c7 313 if (power_state->flags & RADEON_PM_STATE_SINGLE_DISPLAY_ONLY)
d9fdaafb
DA		 314 DRM_DEBUG_DRIVER("\tSingle display only\n");
315 DRM_DEBUG_DRIVER("\t%d Clock Mode(s)\n", power_state->num_clock_modes);
f712d0c7
RM		 316 for (j = 0; j < power_state->num_clock_modes; j++) {
317 clock_info = &(power_state->clock_info[j]);
318 if (rdev->flags & RADEON_IS_IGP)
eb2c27a0
AD		 319 DRM_DEBUG_DRIVER("\t\t%d e: %d\n",
320 j,
321 clock_info->sclk * 10);
f712d0c7 322 else
eb2c27a0
AD		 323 DRM_DEBUG_DRIVER("\t\t%d e: %d\tm: %d\tv: %d\n",
324 j,
325 clock_info->sclk * 10,
326 clock_info->mclk * 10,
327 clock_info->voltage.voltage);
f712d0c7
RM		 328 }
329 }
330}
331
ce8f5370
AD		 332static ssize_t radeon_get_pm_profile(struct device *dev,
333 struct device_attribute *attr,
334 char *buf)
a424816f
AD		 335{
336 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
337 struct radeon_device *rdev = ddev->dev_private;
ce8f5370 338 int cp = rdev->pm.profile;
a424816f 339
ce8f5370
AD		 340 return snprintf(buf, PAGE_SIZE, "%s\n",
341 (cp == PM_PROFILE_AUTO) ? "auto" :
342 (cp == PM_PROFILE_LOW) ? "low" :
12e27be8 343 (cp == PM_PROFILE_MID) ? "mid" :
ce8f5370 344 (cp == PM_PROFILE_HIGH) ? "high" : "default");
a424816f
AD		 345}
346
ce8f5370
AD		 347static ssize_t radeon_set_pm_profile(struct device *dev,
348 struct device_attribute *attr,
349 const char *buf,
350 size_t count)
a424816f
AD		 351{
352 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
353 struct radeon_device *rdev = ddev->dev_private;
a424816f
AD		 354
355 mutex_lock(&rdev->pm.mutex);
ce8f5370
AD		 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;
c9e75b21
AD		 363 else if (strncmp("mid", buf, strlen("mid")) == 0)
364 rdev->pm.profile = PM_PROFILE_MID;
ce8f5370
AD		 365 else if (strncmp("high", buf, strlen("high")) == 0)
366 rdev->pm.profile = PM_PROFILE_HIGH;
367 else {
1783e4bf 368 count = -EINVAL;
ce8f5370 369 goto fail;
a424816f 370 }
ce8f5370
AD		 371 radeon_pm_update_profile(rdev);
372 radeon_pm_set_clocks(rdev);
1783e4bf
TR		 373 } else
374 count = -EINVAL;
375
ce8f5370 376fail:
a424816f
AD		 377 mutex_unlock(&rdev->pm.mutex);
378
379 return count;
380}
381
ce8f5370
AD		 382static ssize_t radeon_get_pm_method(struct device *dev,
383 struct device_attribute *attr,
384 char *buf)
a424816f
AD		 385{
386 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
387 struct radeon_device *rdev = ddev->dev_private;
ce8f5370 388 int pm = rdev->pm.pm_method;
a424816f
AD		 389
390 return snprintf(buf, PAGE_SIZE, "%s\n",
ce8f5370 391 (pm == PM_METHOD_DYNPM) ? "dynpm" : "profile");
a424816f
AD		 392}
393
ce8f5370
AD		 394static ssize_t radeon_set_pm_method(struct device *dev,
395 struct device_attribute *attr,
396 const char *buf,
397 size_t count)
a424816f
AD		 398{
399 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
400 struct radeon_device *rdev = ddev->dev_private;
a424816f 401
ce8f5370
AD		 402
403 if (strncmp("dynpm", buf, strlen("dynpm")) == 0) {
a424816f 404 mutex_lock(&rdev->pm.mutex);
ce8f5370
AD		 405 rdev->pm.pm_method = PM_METHOD_DYNPM;
406 rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
407 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
a424816f 408 mutex_unlock(&rdev->pm.mutex);
ce8f5370
AD		 409 } else if (strncmp("profile", buf, strlen("profile")) == 0) {
410 mutex_lock(&rdev->pm.mutex);
ce8f5370
AD		 411 /* disable dynpm */
412 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
413 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
3f53eb6f 414 rdev->pm.pm_method = PM_METHOD_PROFILE;
ce8f5370 415 mutex_unlock(&rdev->pm.mutex);
32c87fca 416 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
ce8f5370 417 } else {
1783e4bf 418 count = -EINVAL;
ce8f5370
AD		 419 goto fail;
420 }
421 radeon_pm_compute_clocks(rdev);
422fail:
a424816f
AD		 423 return count;
424}
425
ce8f5370
AD		 426static DEVICE_ATTR(power_profile, S_IRUGO | S_IWUSR, radeon_get_pm_profile, radeon_set_pm_profile);
427static DEVICE_ATTR(power_method, S_IRUGO | S_IWUSR, radeon_get_pm_method, radeon_set_pm_method);
a424816f 428
21a8122a
AD		 429static ssize_t radeon_hwmon_show_temp(struct device *dev,
430 struct device_attribute *attr,
431 char *buf)
432{
433 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
434 struct radeon_device *rdev = ddev->dev_private;
20d391d7 435 int temp;
21a8122a 436
6bd1c385
AD		 437 if (rdev->asic->pm.get_temperature)
438 temp = radeon_get_temperature(rdev);
439 else
21a8122a 440 temp = 0;
21a8122a
AD		 441
442 return snprintf(buf, PAGE_SIZE, "%d\n", temp);
443}
444
445static ssize_t radeon_hwmon_show_name(struct device *dev,
446 struct device_attribute *attr,
447 char *buf)
448{
449 return sprintf(buf, "radeon\n");
450}
451
452static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, radeon_hwmon_show_temp, NULL, 0);
453static SENSOR_DEVICE_ATTR(name, S_IRUGO, radeon_hwmon_show_name, NULL, 0);
454
455static struct attribute *hwmon_attributes[] = {
456 &sensor_dev_attr_temp1_input.dev_attr.attr,
457 &sensor_dev_attr_name.dev_attr.attr,
458 NULL
459};
460
461static const struct attribute_group hwmon_attrgroup = {
462 .attrs = hwmon_attributes,
463};
464
0d18abed 465static int radeon_hwmon_init(struct radeon_device *rdev)
21a8122a 466{
0d18abed 467 int err = 0;
21a8122a
AD		 468
469 rdev->pm.int_hwmon_dev = NULL;
470
471 switch (rdev->pm.int_thermal_type) {
472 case THERMAL_TYPE_RV6XX:
473 case THERMAL_TYPE_RV770:
474 case THERMAL_TYPE_EVERGREEN:
457558ed 475 case THERMAL_TYPE_NI:
e33df25f 476 case THERMAL_TYPE_SUMO:
1bd47d2e 477 case THERMAL_TYPE_SI:
6bd1c385 478 if (rdev->asic->pm.get_temperature == NULL)
5d7486c7 479 return err;
21a8122a 480 rdev->pm.int_hwmon_dev = hwmon_device_register(rdev->dev);
0d18abed
DC		 481 if (IS_ERR(rdev->pm.int_hwmon_dev)) {
482 err = PTR_ERR(rdev->pm.int_hwmon_dev);
483 dev_err(rdev->dev,
484 "Unable to register hwmon device: %d\n", err);
485 break;
486 }
21a8122a
AD		 487 dev_set_drvdata(rdev->pm.int_hwmon_dev, rdev->ddev);
488 err = sysfs_create_group(&rdev->pm.int_hwmon_dev->kobj,
489 &hwmon_attrgroup);
0d18abed
DC		 490 if (err) {
491 dev_err(rdev->dev,
492 "Unable to create hwmon sysfs file: %d\n", err);
493 hwmon_device_unregister(rdev->dev);
494 }
21a8122a
AD		 495 break;
496 default:
497 break;
498 }
0d18abed
DC		 499
500 return err;
21a8122a
AD		 501}
502
503static void radeon_hwmon_fini(struct radeon_device *rdev)
504{
505 if (rdev->pm.int_hwmon_dev) {
506 sysfs_remove_group(&rdev->pm.int_hwmon_dev->kobj, &hwmon_attrgroup);
507 hwmon_device_unregister(rdev->pm.int_hwmon_dev);
508 }
509}
510
ce8f5370 511void radeon_pm_suspend(struct radeon_device *rdev)
56278a8e 512{
ce8f5370 513 mutex_lock(&rdev->pm.mutex);
3f53eb6f 514 if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
3f53eb6f
RW		 515 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE)
516 rdev->pm.dynpm_state = DYNPM_STATE_SUSPENDED;
3f53eb6f 517 }
ce8f5370 518 mutex_unlock(&rdev->pm.mutex);
32c87fca
TH		 519
520 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
56278a8e
AD		 521}
522
ce8f5370 523void radeon_pm_resume(struct radeon_device *rdev)
d0d6cb81 524{
ed18a360 525 /* set up the default clocks if the MC ucode is loaded */
2e3b3b10
AD		 526 if ((rdev->family >= CHIP_BARTS) &&
527 (rdev->family <= CHIP_CAYMAN) &&
528 rdev->mc_fw) {
ed18a360 529 if (rdev->pm.default_vddc)
8a83ec5e
AD		 530 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
531 SET_VOLTAGE_TYPE_ASIC_VDDC);
2feea49a
AD		 532 if (rdev->pm.default_vddci)
533 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
534 SET_VOLTAGE_TYPE_ASIC_VDDCI);
ed18a360
AD		 535 if (rdev->pm.default_sclk)
536 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
537 if (rdev->pm.default_mclk)
538 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
539 }
f8ed8b4c
AD		 540 /* asic init will reset the default power state */
541 mutex_lock(&rdev->pm.mutex);
542 rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
543 rdev->pm.current_clock_mode_index = 0;
9ace9f7b
AD		 544 rdev->pm.current_sclk = rdev->pm.default_sclk;
545 rdev->pm.current_mclk = rdev->pm.default_mclk;
4d60173f 546 rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
2feea49a 547 rdev->pm.current_vddci = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.vddci;
3f53eb6f
RW		 548 if (rdev->pm.pm_method == PM_METHOD_DYNPM
549 && rdev->pm.dynpm_state == DYNPM_STATE_SUSPENDED) {
550 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
32c87fca
TH		 551 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
552 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
3f53eb6f 553 }
f8ed8b4c 554 mutex_unlock(&rdev->pm.mutex);
ce8f5370 555 radeon_pm_compute_clocks(rdev);
d0d6cb81
RM		 556}
557
7433874e
RM		 558int radeon_pm_init(struct radeon_device *rdev)
559{
26481fb1 560 int ret;
0d18abed 561
ce8f5370
AD		 562 /* default to profile method */
563 rdev->pm.pm_method = PM_METHOD_PROFILE;
f8ed8b4c 564 rdev->pm.profile = PM_PROFILE_DEFAULT;
ce8f5370
AD		 565 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
566 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
567 rdev->pm.dynpm_can_upclock = true;
568 rdev->pm.dynpm_can_downclock = true;
9ace9f7b
AD		 569 rdev->pm.default_sclk = rdev->clock.default_sclk;
570 rdev->pm.default_mclk = rdev->clock.default_mclk;
f8ed8b4c
AD		 571 rdev->pm.current_sclk = rdev->clock.default_sclk;
572 rdev->pm.current_mclk = rdev->clock.default_mclk;
21a8122a 573 rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
c913e23a 574
56278a8e
AD		 575 if (rdev->bios) {
576 if (rdev->is_atom_bios)
577 radeon_atombios_get_power_modes(rdev);
578 else
579 radeon_combios_get_power_modes(rdev);
f712d0c7 580 radeon_pm_print_states(rdev);
ce8f5370 581 radeon_pm_init_profile(rdev);
ed18a360 582 /* set up the default clocks if the MC ucode is loaded */
2e3b3b10
AD		 583 if ((rdev->family >= CHIP_BARTS) &&
584 (rdev->family <= CHIP_CAYMAN) &&
585 rdev->mc_fw) {
ed18a360 586 if (rdev->pm.default_vddc)
8a83ec5e
AD		 587 radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
588 SET_VOLTAGE_TYPE_ASIC_VDDC);
4639dd21
AD		 589 if (rdev->pm.default_vddci)
590 radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
591 SET_VOLTAGE_TYPE_ASIC_VDDCI);
ed18a360
AD		 592 if (rdev->pm.default_sclk)
593 radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
594 if (rdev->pm.default_mclk)
595 radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
596 }
56278a8e
AD		 597 }
598
21a8122a 599 /* set up the internal thermal sensor if applicable */
0d18abed
DC		 600 ret = radeon_hwmon_init(rdev);
601 if (ret)
602 return ret;
32c87fca
TH		 603
604 INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
605
ce8f5370 606 if (rdev->pm.num_power_states > 1) {
ce8f5370 607 /* where's the best place to put these? */
26481fb1
DA		 608 ret = device_create_file(rdev->dev, &dev_attr_power_profile);
609 if (ret)
610 DRM_ERROR("failed to create device file for power profile\n");
611 ret = device_create_file(rdev->dev, &dev_attr_power_method);
612 if (ret)
613 DRM_ERROR("failed to create device file for power method\n");
a424816f 614
ce8f5370
AD		 615 if (radeon_debugfs_pm_init(rdev)) {
616 DRM_ERROR("Failed to register debugfs file for PM!\n");
617 }
c913e23a 618
ce8f5370
AD		 619 DRM_INFO("radeon: power management initialized\n");
620 }
c913e23a 621
7433874e
RM		 622 return 0;
623}
624
29fb52ca
AD		 625void radeon_pm_fini(struct radeon_device *rdev)
626{
ce8f5370 627 if (rdev->pm.num_power_states > 1) {
a424816f 628 mutex_lock(&rdev->pm.mutex);
ce8f5370
AD		 629 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
630 rdev->pm.profile = PM_PROFILE_DEFAULT;
631 radeon_pm_update_profile(rdev);
632 radeon_pm_set_clocks(rdev);
633 } else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
ce8f5370
AD		 634 /* reset default clocks */
635 rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
636 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
637 radeon_pm_set_clocks(rdev);
638 }
a424816f 639 mutex_unlock(&rdev->pm.mutex);
32c87fca
TH		 640
641 cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
58e21dff 642
ce8f5370
AD		 643 device_remove_file(rdev->dev, &dev_attr_power_profile);
644 device_remove_file(rdev->dev, &dev_attr_power_method);
ce8f5370 645 }
a424816f 646
0975b162
AD		 647 if (rdev->pm.power_state)
648 kfree(rdev->pm.power_state);
649
21a8122a 650 radeon_hwmon_fini(rdev);
29fb52ca
AD		 651}
652
c913e23a
RM		 653void radeon_pm_compute_clocks(struct radeon_device *rdev)
654{
655 struct drm_device *ddev = rdev->ddev;
a48b9b4e 656 struct drm_crtc *crtc;
c913e23a 657 struct radeon_crtc *radeon_crtc;
c913e23a 658
ce8f5370
AD		 659 if (rdev->pm.num_power_states < 2)
660 return;
661
c913e23a
RM		 662 mutex_lock(&rdev->pm.mutex);
663
664 rdev->pm.active_crtcs = 0;
a48b9b4e
AD		 665 rdev->pm.active_crtc_count = 0;
666 list_for_each_entry(crtc,
667 &ddev->mode_config.crtc_list, head) {
668 radeon_crtc = to_radeon_crtc(crtc);
669 if (radeon_crtc->enabled) {
c913e23a 670 rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
a48b9b4e 671 rdev->pm.active_crtc_count++;
c913e23a
RM		 672 }
673 }
674
ce8f5370
AD		 675 if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
676 radeon_pm_update_profile(rdev);
677 radeon_pm_set_clocks(rdev);
678 } else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
679 if (rdev->pm.dynpm_state != DYNPM_STATE_DISABLED) {
680 if (rdev->pm.active_crtc_count > 1) {
681 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
682 cancel_delayed_work(&rdev->pm.dynpm_idle_work);
683
684 rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
685 rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
686 radeon_pm_get_dynpm_state(rdev);
687 radeon_pm_set_clocks(rdev);
688
d9fdaafb 689 DRM_DEBUG_DRIVER("radeon: dynamic power management deactivated\n");
ce8f5370
AD		 690 }
691 } else if (rdev->pm.active_crtc_count == 1) {
692 /* TODO: Increase clocks if needed for current mode */
693
694 if (rdev->pm.dynpm_state == DYNPM_STATE_MINIMUM) {
695 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
696 rdev->pm.dynpm_planned_action = DYNPM_ACTION_UPCLOCK;
697 radeon_pm_get_dynpm_state(rdev);
698 radeon_pm_set_clocks(rdev);
699
32c87fca
TH		 700 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
701 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
ce8f5370
AD		 702 } else if (rdev->pm.dynpm_state == DYNPM_STATE_PAUSED) {
703 rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
32c87fca
TH		 704 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
705 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
d9fdaafb 706 DRM_DEBUG_DRIVER("radeon: dynamic power management activated\n");
ce8f5370
AD		 707 }
708 } else { /* count == 0 */
709 if (rdev->pm.dynpm_state != DYNPM_STATE_MINIMUM) {
710 cancel_delayed_work(&rdev->pm.dynpm_idle_work);
711
712 rdev->pm.dynpm_state = DYNPM_STATE_MINIMUM;
713 rdev->pm.dynpm_planned_action = DYNPM_ACTION_MINIMUM;
714 radeon_pm_get_dynpm_state(rdev);
715 radeon_pm_set_clocks(rdev);
716 }
717 }
c913e23a 718 }
c913e23a 719 }
73a6d3fc
RM		 720
721 mutex_unlock(&rdev->pm.mutex);
c913e23a
RM		 722}
723
ce8f5370 724static bool radeon_pm_in_vbl(struct radeon_device *rdev)
f735261b 725{
75fa0b08 726 int crtc, vpos, hpos, vbl_status;
f735261b
DA		 727 bool in_vbl = true;
728
75fa0b08
MK		 729 /* Iterate over all active crtc's. All crtc's must be in vblank,
730 * otherwise return in_vbl == false.
731 */
732 for (crtc = 0; (crtc < rdev->num_crtc) && in_vbl; crtc++) {
733 if (rdev->pm.active_crtcs & (1 << crtc)) {
f5a80209
MK		 734 vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev, crtc, &vpos, &hpos);
735 if ((vbl_status & DRM_SCANOUTPOS_VALID) &&
736 !(vbl_status & DRM_SCANOUTPOS_INVBL))
f735261b
DA		 737 in_vbl = false;
738 }
739 }
f81f2024
MG		 740
741 return in_vbl;
742}
743
ce8f5370 744static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
f81f2024
MG		 745{
746 u32 stat_crtc = 0;
747 bool in_vbl = radeon_pm_in_vbl(rdev);
748
f735261b 749 if (in_vbl == false)
d9fdaafb 750 DRM_DEBUG_DRIVER("not in vbl for pm change %08x at %s\n", stat_crtc,
bae6b562 751 finish ? "exit" : "entry");
f735261b
DA		 752 return in_vbl;
753}
c913e23a 754
ce8f5370 755static void radeon_dynpm_idle_work_handler(struct work_struct *work)
c913e23a
RM		 756{
757 struct radeon_device *rdev;
d9932a32 758 int resched;
c913e23a 759 rdev = container_of(work, struct radeon_device,
ce8f5370 760 pm.dynpm_idle_work.work);
c913e23a 761
d9932a32 762 resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
c913e23a 763 mutex_lock(&rdev->pm.mutex);
ce8f5370 764 if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
c913e23a 765 int not_processed = 0;
7465280c
AD		 766 int i;
767
7465280c 768 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
0ec0612a
AD		 769 struct radeon_ring *ring = &rdev->ring[i];
770
771 if (ring->ready) {
772 not_processed += radeon_fence_count_emitted(rdev, i);
773 if (not_processed >= 3)
774 break;
775 }
c913e23a 776 }
c913e23a
RM		 777
778 if (not_processed >= 3) { /* should upclock */
ce8f5370
AD		 779 if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_DOWNCLOCK) {
780 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
781 } else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
782 rdev->pm.dynpm_can_upclock) {
783 rdev->pm.dynpm_planned_action =
784 DYNPM_ACTION_UPCLOCK;
785 rdev->pm.dynpm_action_timeout = jiffies +
c913e23a
RM		 786 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
787 }
788 } else if (not_processed == 0) { /* should downclock */
ce8f5370
AD		 789 if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_UPCLOCK) {
790 rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
791 } else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
792 rdev->pm.dynpm_can_downclock) {
793 rdev->pm.dynpm_planned_action =
794 DYNPM_ACTION_DOWNCLOCK;
795 rdev->pm.dynpm_action_timeout = jiffies +
c913e23a
RM		 796 msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
797 }
798 }
799
d7311171
AD		 800 /* Note, radeon_pm_set_clocks is called with static_switch set
801 * to false since we want to wait for vbl to avoid flicker.
802 */
ce8f5370
AD		 803 if (rdev->pm.dynpm_planned_action != DYNPM_ACTION_NONE &&
804 jiffies > rdev->pm.dynpm_action_timeout) {
805 radeon_pm_get_dynpm_state(rdev);
806 radeon_pm_set_clocks(rdev);
c913e23a 807 }
3f53eb6f 808
32c87fca
TH		 809 schedule_delayed_work(&rdev->pm.dynpm_idle_work,
810 msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
c913e23a
RM		 811 }
812 mutex_unlock(&rdev->pm.mutex);
d9932a32 813 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
c913e23a
RM		 814}
815
7433874e
RM		 816/*
817 * Debugfs info
818 */
819#if defined(CONFIG_DEBUG_FS)
820
821static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
822{
823 struct drm_info_node *node = (struct drm_info_node *) m->private;
824 struct drm_device *dev = node->minor->dev;
825 struct radeon_device *rdev = dev->dev_private;
826
9ace9f7b 827 seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);
bf05d998
AD		 828 /* radeon_get_engine_clock is not reliable on APUs so just print the current clock */
829 if ((rdev->family >= CHIP_PALM) && (rdev->flags & RADEON_IS_IGP))
830 seq_printf(m, "current engine clock: %u0 kHz\n", rdev->pm.current_sclk);
831 else
832 seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
9ace9f7b 833 seq_printf(m, "default memory clock: %u0 kHz\n", rdev->pm.default_mclk);
798bcf73 834 if (rdev->asic->pm.get_memory_clock)
6234077d 835 seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
0fcbe947
RM		 836 if (rdev->pm.current_vddc)
837 seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);
798bcf73 838 if (rdev->asic->pm.get_pcie_lanes)
aa5120d2 839 seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
7433874e
RM		 840
841 return 0;
842}
843
844static struct drm_info_list radeon_pm_info_list[] = {
845 {"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
846};
847#endif
848
c913e23a 849static int radeon_debugfs_pm_init(struct radeon_device *rdev)
7433874e
RM		 850{
851#if defined(CONFIG_DEBUG_FS)
852 return radeon_debugfs_add_files(rdev, radeon_pm_info_list, ARRAY_SIZE(radeon_pm_info_list));
853#else
854 return 0;
855#endif
856}
Linux kernel - Deliverables
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