1/*
   2 * Permission is hereby granted, free of charge, to any person obtaining a
   3 * copy of this software and associated documentation files (the "Software"),
   4 * to deal in the Software without restriction, including without limitation
   5 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   6 * and/or sell copies of the Software, and to permit persons to whom the
   7 * Software is furnished to do so, subject to the following conditions:
   8 *
   9 * The above copyright notice and this permission notice shall be included in
  10 * all copies or substantial portions of the Software.
  11 *
  12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  15 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  16 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  17 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  18 * OTHER DEALINGS IN THE SOFTWARE.
  19 *
  20 * Authors: Rafał Miłecki <zajec5@gmail.com>
  21 *          Alex Deucher <alexdeucher@gmail.com>
  22 */
  23
  24#include <linux/hwmon-sysfs.h>
  25#include <linux/hwmon.h>
  26#include <linux/pci.h>
  27#include <linux/power_supply.h>
  28
  29#include <drm/drm_vblank.h>
  30
  31#include "atom.h"
  32#include "avivod.h"
 
  33#include "r600_dpm.h"
  34#include "radeon.h"
  35#include "radeon_pm.h"
 
  36
  37#define RADEON_IDLE_LOOP_MS 100
  38#define RADEON_RECLOCK_DELAY_MS 200
  39#define RADEON_WAIT_VBLANK_TIMEOUT 200
  40
  41static const char *radeon_pm_state_type_name[5] = {
  42	"",
  43	"Powersave",
  44	"Battery",
  45	"Balanced",
  46	"Performance",
  47};
  48
  49static void radeon_dynpm_idle_work_handler(struct work_struct *work);
  50static void radeon_debugfs_pm_init(struct radeon_device *rdev);
  51static bool radeon_pm_in_vbl(struct radeon_device *rdev);
  52static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish);
  53static void radeon_pm_update_profile(struct radeon_device *rdev);
  54static void radeon_pm_set_clocks(struct radeon_device *rdev);
  55
  56int radeon_pm_get_type_index(struct radeon_device *rdev,
  57			     enum radeon_pm_state_type ps_type,
  58			     int instance)
  59{
  60	int i;
  61	int found_instance = -1;
  62
  63	for (i = 0; i < rdev->pm.num_power_states; i++) {
  64		if (rdev->pm.power_state[i].type == ps_type) {
  65			found_instance++;
  66			if (found_instance == instance)
  67				return i;
  68		}
  69	}
  70	/* return default if no match */
  71	return rdev->pm.default_power_state_index;
  72}
  73
  74void radeon_pm_acpi_event_handler(struct radeon_device *rdev)
  75{
  76	if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
  77		mutex_lock(&rdev->pm.mutex);
  78		if (power_supply_is_system_supplied() > 0)
  79			rdev->pm.dpm.ac_power = true;
  80		else
  81			rdev->pm.dpm.ac_power = false;
  82		if (rdev->family == CHIP_ARUBA) {
  83			if (rdev->asic->dpm.enable_bapm)
  84				radeon_dpm_enable_bapm(rdev, rdev->pm.dpm.ac_power);
  85		}
  86		mutex_unlock(&rdev->pm.mutex);
  87	} else if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
  88		if (rdev->pm.profile == PM_PROFILE_AUTO) {
  89			mutex_lock(&rdev->pm.mutex);
  90			radeon_pm_update_profile(rdev);
  91			radeon_pm_set_clocks(rdev);
  92			mutex_unlock(&rdev->pm.mutex);
  93		}
  94	}
  95}
  96
  97static void radeon_pm_update_profile(struct radeon_device *rdev)
  98{
  99	switch (rdev->pm.profile) {
 100	case PM_PROFILE_DEFAULT:
 101		rdev->pm.profile_index = PM_PROFILE_DEFAULT_IDX;
 102		break;
 103	case PM_PROFILE_AUTO:
 104		if (power_supply_is_system_supplied() > 0) {
 105			if (rdev->pm.active_crtc_count > 1)
 106				rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
 107			else
 108				rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
 109		} else {
 110			if (rdev->pm.active_crtc_count > 1)
 111				rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
 112			else
 113				rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
 114		}
 115		break;
 116	case PM_PROFILE_LOW:
 117		if (rdev->pm.active_crtc_count > 1)
 118			rdev->pm.profile_index = PM_PROFILE_LOW_MH_IDX;
 119		else
 120			rdev->pm.profile_index = PM_PROFILE_LOW_SH_IDX;
 121		break;
 122	case PM_PROFILE_MID:
 123		if (rdev->pm.active_crtc_count > 1)
 124			rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
 125		else
 126			rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
 127		break;
 128	case PM_PROFILE_HIGH:
 129		if (rdev->pm.active_crtc_count > 1)
 130			rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
 131		else
 132			rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
 133		break;
 134	}
 135
 136	if (rdev->pm.active_crtc_count == 0) {
 137		rdev->pm.requested_power_state_index =
 138			rdev->pm.profiles[rdev->pm.profile_index].dpms_off_ps_idx;
 139		rdev->pm.requested_clock_mode_index =
 140			rdev->pm.profiles[rdev->pm.profile_index].dpms_off_cm_idx;
 141	} else {
 142		rdev->pm.requested_power_state_index =
 143			rdev->pm.profiles[rdev->pm.profile_index].dpms_on_ps_idx;
 144		rdev->pm.requested_clock_mode_index =
 145			rdev->pm.profiles[rdev->pm.profile_index].dpms_on_cm_idx;
 146	}
 147}
 148
 149static void radeon_unmap_vram_bos(struct radeon_device *rdev)
 150{
 151	struct radeon_bo *bo, *n;
 152
 153	if (list_empty(&rdev->gem.objects))
 154		return;
 155
 156	list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
 157		if (bo->tbo.resource->mem_type == TTM_PL_VRAM)
 158			ttm_bo_unmap_virtual(&bo->tbo);
 159	}
 160}
 161
 162static void radeon_sync_with_vblank(struct radeon_device *rdev)
 163{
 164	if (rdev->pm.active_crtcs) {
 165		rdev->pm.vblank_sync = false;
 166		wait_event_timeout(
 167			rdev->irq.vblank_queue, rdev->pm.vblank_sync,
 168			msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
 169	}
 170}
 171
 172static void radeon_set_power_state(struct radeon_device *rdev)
 173{
 174	u32 sclk, mclk;
 175	bool misc_after = false;
 176
 177	if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
 178	    (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
 179		return;
 180
 181	if (radeon_gui_idle(rdev)) {
 182		sclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
 183			clock_info[rdev->pm.requested_clock_mode_index].sclk;
 184		if (sclk > rdev->pm.default_sclk)
 185			sclk = rdev->pm.default_sclk;
 186
 187		/* starting with BTC, there is one state that is used for both
 188		 * MH and SH.  Difference is that we always use the high clock index for
 189		 * mclk and vddci.
 190		 */
 191		if ((rdev->pm.pm_method == PM_METHOD_PROFILE) &&
 192		    (rdev->family >= CHIP_BARTS) &&
 193		    rdev->pm.active_crtc_count &&
 194		    ((rdev->pm.profile_index == PM_PROFILE_MID_MH_IDX) ||
 195		     (rdev->pm.profile_index == PM_PROFILE_LOW_MH_IDX)))
 196			mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
 197				clock_info[rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx].mclk;
 198		else
 199			mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
 200				clock_info[rdev->pm.requested_clock_mode_index].mclk;
 201
 202		if (mclk > rdev->pm.default_mclk)
 203			mclk = rdev->pm.default_mclk;
 204
 205		/* upvolt before raising clocks, downvolt after lowering clocks */
 206		if (sclk < rdev->pm.current_sclk)
 207			misc_after = true;
 208
 209		radeon_sync_with_vblank(rdev);
 210
 211		if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
 212			if (!radeon_pm_in_vbl(rdev))
 213				return;
 214		}
 215
 216		radeon_pm_prepare(rdev);
 217
 218		if (!misc_after)
 219			/* voltage, pcie lanes, etc.*/
 220			radeon_pm_misc(rdev);
 221
 222		/* set engine clock */
 223		if (sclk != rdev->pm.current_sclk) {
 224			radeon_pm_debug_check_in_vbl(rdev, false);
 225			radeon_set_engine_clock(rdev, sclk);
 226			radeon_pm_debug_check_in_vbl(rdev, true);
 227			rdev->pm.current_sclk = sclk;
 228			DRM_DEBUG_DRIVER("Setting: e: %d\n", sclk);
 229		}
 230
 231		/* set memory clock */
 232		if (rdev->asic->pm.set_memory_clock && (mclk != rdev->pm.current_mclk)) {
 233			radeon_pm_debug_check_in_vbl(rdev, false);
 234			radeon_set_memory_clock(rdev, mclk);
 235			radeon_pm_debug_check_in_vbl(rdev, true);
 236			rdev->pm.current_mclk = mclk;
 237			DRM_DEBUG_DRIVER("Setting: m: %d\n", mclk);
 238		}
 239
 240		if (misc_after)
 241			/* voltage, pcie lanes, etc.*/
 242			radeon_pm_misc(rdev);
 243
 244		radeon_pm_finish(rdev);
 245
 246		rdev->pm.current_power_state_index = rdev->pm.requested_power_state_index;
 247		rdev->pm.current_clock_mode_index = rdev->pm.requested_clock_mode_index;
 248	} else
 249		DRM_DEBUG_DRIVER("pm: GUI not idle!!!\n");
 250}
 251
 252static void radeon_pm_set_clocks(struct radeon_device *rdev)
 253{
 254	struct drm_crtc *crtc;
 255	int i, r;
 256
 257	/* no need to take locks, etc. if nothing's going to change */
 258	if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
 259	    (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
 260		return;
 261
 262	down_write(&rdev->pm.mclk_lock);
 263	mutex_lock(&rdev->ring_lock);
 264
 265	/* wait for the rings to drain */
 266	for (i = 0; i < RADEON_NUM_RINGS; i++) {
 267		struct radeon_ring *ring = &rdev->ring[i];
 268		if (!ring->ready) {
 269			continue;
 270		}
 271		r = radeon_fence_wait_empty(rdev, i);
 272		if (r) {
 273			/* needs a GPU reset dont reset here */
 274			mutex_unlock(&rdev->ring_lock);
 275			up_write(&rdev->pm.mclk_lock);
 276			return;
 277		}
 278	}
 279
 280	radeon_unmap_vram_bos(rdev);
 281
 282	if (rdev->irq.installed) {
 283		i = 0;
 284		drm_for_each_crtc(crtc, rdev->ddev) {
 285			if (rdev->pm.active_crtcs & (1 << i)) {
 286				/* This can fail if a modeset is in progress */
 287				if (drm_crtc_vblank_get(crtc) == 0)
 288					rdev->pm.req_vblank |= (1 << i);
 289				else
 290					DRM_DEBUG_DRIVER("crtc %d no vblank, can glitch\n",
 291							 i);
 292			}
 293			i++;
 294		}
 295	}
 296
 297	radeon_set_power_state(rdev);
 298
 299	if (rdev->irq.installed) {
 300		i = 0;
 301		drm_for_each_crtc(crtc, rdev->ddev) {
 302			if (rdev->pm.req_vblank & (1 << i)) {
 303				rdev->pm.req_vblank &= ~(1 << i);
 304				drm_crtc_vblank_put(crtc);
 305			}
 306			i++;
 307		}
 308	}
 309
 310	/* update display watermarks based on new power state */
 311	radeon_update_bandwidth_info(rdev);
 312	if (rdev->pm.active_crtc_count)
 313		radeon_bandwidth_update(rdev);
 314
 315	rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
 316
 317	mutex_unlock(&rdev->ring_lock);
 318	up_write(&rdev->pm.mclk_lock);
 319}
 320
 321static void radeon_pm_print_states(struct radeon_device *rdev)
 322{
 323	int i, j;
 324	struct radeon_power_state *power_state;
 325	struct radeon_pm_clock_info *clock_info;
 326
 327	DRM_DEBUG_DRIVER("%d Power State(s)\n", rdev->pm.num_power_states);
 328	for (i = 0; i < rdev->pm.num_power_states; i++) {
 329		power_state = &rdev->pm.power_state[i];
 330		DRM_DEBUG_DRIVER("State %d: %s\n", i,
 331			radeon_pm_state_type_name[power_state->type]);
 332		if (i == rdev->pm.default_power_state_index)
 333			DRM_DEBUG_DRIVER("\tDefault");
 334		if ((rdev->flags & RADEON_IS_PCIE) && !(rdev->flags & RADEON_IS_IGP))
 335			DRM_DEBUG_DRIVER("\t%d PCIE Lanes\n", power_state->pcie_lanes);
 336		if (power_state->flags & RADEON_PM_STATE_SINGLE_DISPLAY_ONLY)
 337			DRM_DEBUG_DRIVER("\tSingle display only\n");
 338		DRM_DEBUG_DRIVER("\t%d Clock Mode(s)\n", power_state->num_clock_modes);
 339		for (j = 0; j < power_state->num_clock_modes; j++) {
 340			clock_info = &(power_state->clock_info[j]);
 341			if (rdev->flags & RADEON_IS_IGP)
 342				DRM_DEBUG_DRIVER("\t\t%d e: %d\n",
 343						 j,
 344						 clock_info->sclk * 10);
 345			else
 346				DRM_DEBUG_DRIVER("\t\t%d e: %d\tm: %d\tv: %d\n",
 347						 j,
 348						 clock_info->sclk * 10,
 349						 clock_info->mclk * 10,
 350						 clock_info->voltage.voltage);
 351		}
 352	}
 353}
 354
 355static ssize_t radeon_get_pm_profile(struct device *dev,
 356				     struct device_attribute *attr,
 357				     char *buf)
 358{
 359	struct drm_device *ddev = dev_get_drvdata(dev);
 360	struct radeon_device *rdev = ddev->dev_private;
 361	int cp = rdev->pm.profile;
 362
 363	return sysfs_emit(buf, "%s\n", (cp == PM_PROFILE_AUTO) ? "auto" :
 364			  (cp == PM_PROFILE_LOW) ? "low" :
 365			  (cp == PM_PROFILE_MID) ? "mid" :
 366			  (cp == PM_PROFILE_HIGH) ? "high" : "default");
 
 367}
 368
 369static ssize_t radeon_set_pm_profile(struct device *dev,
 370				     struct device_attribute *attr,
 371				     const char *buf,
 372				     size_t count)
 373{
 374	struct drm_device *ddev = dev_get_drvdata(dev);
 375	struct radeon_device *rdev = ddev->dev_private;
 376
 377	/* Can't set profile when the card is off */
 378	if  ((rdev->flags & RADEON_IS_PX) &&
 379	     (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
 380		return -EINVAL;
 381
 382	mutex_lock(&rdev->pm.mutex);
 383	if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
 384		if (strncmp("default", buf, strlen("default")) == 0)
 385			rdev->pm.profile = PM_PROFILE_DEFAULT;
 386		else if (strncmp("auto", buf, strlen("auto")) == 0)
 387			rdev->pm.profile = PM_PROFILE_AUTO;
 388		else if (strncmp("low", buf, strlen("low")) == 0)
 389			rdev->pm.profile = PM_PROFILE_LOW;
 390		else if (strncmp("mid", buf, strlen("mid")) == 0)
 391			rdev->pm.profile = PM_PROFILE_MID;
 392		else if (strncmp("high", buf, strlen("high")) == 0)
 393			rdev->pm.profile = PM_PROFILE_HIGH;
 394		else {
 395			count = -EINVAL;
 396			goto fail;
 397		}
 398		radeon_pm_update_profile(rdev);
 399		radeon_pm_set_clocks(rdev);
 400	} else
 401		count = -EINVAL;
 402
 403fail:
 404	mutex_unlock(&rdev->pm.mutex);
 405
 406	return count;
 407}
 408
 409static ssize_t radeon_get_pm_method(struct device *dev,
 410				    struct device_attribute *attr,
 411				    char *buf)
 412{
 413	struct drm_device *ddev = dev_get_drvdata(dev);
 414	struct radeon_device *rdev = ddev->dev_private;
 415	int pm = rdev->pm.pm_method;
 416
 417	return sysfs_emit(buf, "%s\n", (pm == PM_METHOD_DYNPM) ? "dynpm" :
 418			  (pm == PM_METHOD_PROFILE) ? "profile" : "dpm");
 
 419}
 420
 421static ssize_t radeon_set_pm_method(struct device *dev,
 422				    struct device_attribute *attr,
 423				    const char *buf,
 424				    size_t count)
 425{
 426	struct drm_device *ddev = dev_get_drvdata(dev);
 427	struct radeon_device *rdev = ddev->dev_private;
 428
 429	/* Can't set method when the card is off */
 430	if  ((rdev->flags & RADEON_IS_PX) &&
 431	     (ddev->switch_power_state != DRM_SWITCH_POWER_ON)) {
 432		count = -EINVAL;
 433		goto fail;
 434	}
 435
 436	/* we don't support the legacy modes with dpm */
 437	if (rdev->pm.pm_method == PM_METHOD_DPM) {
 438		count = -EINVAL;
 439		goto fail;
 440	}
 441
 442	if (strncmp("dynpm", buf, strlen("dynpm")) == 0) {
 443		mutex_lock(&rdev->pm.mutex);
 444		rdev->pm.pm_method = PM_METHOD_DYNPM;
 445		rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
 446		rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
 447		mutex_unlock(&rdev->pm.mutex);
 448	} else if (strncmp("profile", buf, strlen("profile")) == 0) {
 449		mutex_lock(&rdev->pm.mutex);
 450		/* disable dynpm */
 451		rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
 452		rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
 453		rdev->pm.pm_method = PM_METHOD_PROFILE;
 454		mutex_unlock(&rdev->pm.mutex);
 455		cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
 456	} else {
 457		count = -EINVAL;
 458		goto fail;
 459	}
 460	radeon_pm_compute_clocks(rdev);
 461fail:
 462	return count;
 463}
 464
 465static ssize_t radeon_get_dpm_state(struct device *dev,
 466				    struct device_attribute *attr,
 467				    char *buf)
 468{
 469	struct drm_device *ddev = dev_get_drvdata(dev);
 470	struct radeon_device *rdev = ddev->dev_private;
 471	enum radeon_pm_state_type pm = rdev->pm.dpm.user_state;
 472
 473	return sysfs_emit(buf, "%s\n",
 474			  (pm == POWER_STATE_TYPE_BATTERY) ? "battery" :
 475			  (pm == POWER_STATE_TYPE_BALANCED) ? "balanced" : "performance");
 476}
 477
 478static ssize_t radeon_set_dpm_state(struct device *dev,
 479				    struct device_attribute *attr,
 480				    const char *buf,
 481				    size_t count)
 482{
 483	struct drm_device *ddev = dev_get_drvdata(dev);
 484	struct radeon_device *rdev = ddev->dev_private;
 485
 486	mutex_lock(&rdev->pm.mutex);
 487	if (strncmp("battery", buf, strlen("battery")) == 0)
 488		rdev->pm.dpm.user_state = POWER_STATE_TYPE_BATTERY;
 489	else if (strncmp("balanced", buf, strlen("balanced")) == 0)
 490		rdev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
 491	else if (strncmp("performance", buf, strlen("performance")) == 0)
 492		rdev->pm.dpm.user_state = POWER_STATE_TYPE_PERFORMANCE;
 493	else {
 494		mutex_unlock(&rdev->pm.mutex);
 495		count = -EINVAL;
 496		goto fail;
 497	}
 498	mutex_unlock(&rdev->pm.mutex);
 499
 500	/* Can't set dpm state when the card is off */
 501	if (!(rdev->flags & RADEON_IS_PX) ||
 502	    (ddev->switch_power_state == DRM_SWITCH_POWER_ON))
 503		radeon_pm_compute_clocks(rdev);
 504
 505fail:
 506	return count;
 507}
 508
 509static ssize_t radeon_get_dpm_forced_performance_level(struct device *dev,
 510						       struct device_attribute *attr,
 511						       char *buf)
 512{
 513	struct drm_device *ddev = dev_get_drvdata(dev);
 514	struct radeon_device *rdev = ddev->dev_private;
 515	enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level;
 516
 517	if  ((rdev->flags & RADEON_IS_PX) &&
 518	     (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
 519		return sysfs_emit(buf, "off\n");
 520
 521	return sysfs_emit(buf, "%s\n",
 522			  (level == RADEON_DPM_FORCED_LEVEL_AUTO) ? "auto" :
 523			  (level == RADEON_DPM_FORCED_LEVEL_LOW) ? "low" : "high");
 524}
 525
 526static ssize_t radeon_set_dpm_forced_performance_level(struct device *dev,
 527						       struct device_attribute *attr,
 528						       const char *buf,
 529						       size_t count)
 530{
 531	struct drm_device *ddev = dev_get_drvdata(dev);
 532	struct radeon_device *rdev = ddev->dev_private;
 533	enum radeon_dpm_forced_level level;
 534	int ret = 0;
 535
 536	/* Can't force performance level when the card is off */
 537	if  ((rdev->flags & RADEON_IS_PX) &&
 538	     (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
 539		return -EINVAL;
 540
 541	mutex_lock(&rdev->pm.mutex);
 542	if (strncmp("low", buf, strlen("low")) == 0) {
 543		level = RADEON_DPM_FORCED_LEVEL_LOW;
 544	} else if (strncmp("high", buf, strlen("high")) == 0) {
 545		level = RADEON_DPM_FORCED_LEVEL_HIGH;
 546	} else if (strncmp("auto", buf, strlen("auto")) == 0) {
 547		level = RADEON_DPM_FORCED_LEVEL_AUTO;
 548	} else {
 549		count = -EINVAL;
 550		goto fail;
 551	}
 552	if (rdev->asic->dpm.force_performance_level) {
 553		if (rdev->pm.dpm.thermal_active) {
 554			count = -EINVAL;
 555			goto fail;
 556		}
 557		ret = radeon_dpm_force_performance_level(rdev, level);
 558		if (ret)
 559			count = -EINVAL;
 560	}
 561fail:
 562	mutex_unlock(&rdev->pm.mutex);
 563
 564	return count;
 565}
 566
 567static ssize_t radeon_hwmon_get_pwm1_enable(struct device *dev,
 568					    struct device_attribute *attr,
 569					    char *buf)
 570{
 571	struct radeon_device *rdev = dev_get_drvdata(dev);
 572	u32 pwm_mode = 0;
 573
 574	if (rdev->asic->dpm.fan_ctrl_get_mode)
 575		pwm_mode = rdev->asic->dpm.fan_ctrl_get_mode(rdev);
 576
 577	/* never 0 (full-speed), fuse or smc-controlled always */
 578	return sprintf(buf, "%i\n", pwm_mode == FDO_PWM_MODE_STATIC ? 1 : 2);
 579}
 580
 581static ssize_t radeon_hwmon_set_pwm1_enable(struct device *dev,
 582					    struct device_attribute *attr,
 583					    const char *buf,
 584					    size_t count)
 585{
 586	struct radeon_device *rdev = dev_get_drvdata(dev);
 587	int err;
 588	int value;
 589
 590	if(!rdev->asic->dpm.fan_ctrl_set_mode)
 591		return -EINVAL;
 592
 593	err = kstrtoint(buf, 10, &value);
 594	if (err)
 595		return err;
 596
 597	switch (value) {
 598	case 1: /* manual, percent-based */
 599		rdev->asic->dpm.fan_ctrl_set_mode(rdev, FDO_PWM_MODE_STATIC);
 600		break;
 601	default: /* disable */
 602		rdev->asic->dpm.fan_ctrl_set_mode(rdev, 0);
 603		break;
 604	}
 605
 606	return count;
 607}
 608
 609static ssize_t radeon_hwmon_get_pwm1_min(struct device *dev,
 610					 struct device_attribute *attr,
 611					 char *buf)
 612{
 613	return sprintf(buf, "%i\n", 0);
 614}
 615
 616static ssize_t radeon_hwmon_get_pwm1_max(struct device *dev,
 617					 struct device_attribute *attr,
 618					 char *buf)
 619{
 620	return sprintf(buf, "%i\n", 255);
 621}
 622
 623static ssize_t radeon_hwmon_set_pwm1(struct device *dev,
 624				     struct device_attribute *attr,
 625				     const char *buf, size_t count)
 626{
 627	struct radeon_device *rdev = dev_get_drvdata(dev);
 628	int err;
 629	u32 value;
 630
 631	err = kstrtou32(buf, 10, &value);
 632	if (err)
 633		return err;
 634
 635	value = (value * 100) / 255;
 636
 637	err = rdev->asic->dpm.set_fan_speed_percent(rdev, value);
 638	if (err)
 639		return err;
 640
 641	return count;
 642}
 643
 644static ssize_t radeon_hwmon_get_pwm1(struct device *dev,
 645				     struct device_attribute *attr,
 646				     char *buf)
 647{
 648	struct radeon_device *rdev = dev_get_drvdata(dev);
 649	int err;
 650	u32 speed;
 651
 652	err = rdev->asic->dpm.get_fan_speed_percent(rdev, &speed);
 653	if (err)
 654		return err;
 655
 656	speed = (speed * 255) / 100;
 657
 658	return sprintf(buf, "%i\n", speed);
 659}
 660
 661static DEVICE_ATTR(power_profile, S_IRUGO | S_IWUSR, radeon_get_pm_profile, radeon_set_pm_profile);
 662static DEVICE_ATTR(power_method, S_IRUGO | S_IWUSR, radeon_get_pm_method, radeon_set_pm_method);
 663static DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, radeon_get_dpm_state, radeon_set_dpm_state);
 664static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR,
 665		   radeon_get_dpm_forced_performance_level,
 666		   radeon_set_dpm_forced_performance_level);
 667
 668static ssize_t radeon_hwmon_show_temp(struct device *dev,
 669				      struct device_attribute *attr,
 670				      char *buf)
 671{
 672	struct radeon_device *rdev = dev_get_drvdata(dev);
 673	struct drm_device *ddev = rdev->ddev;
 674	int temp;
 675
 676	/* Can't get temperature when the card is off */
 677	if  ((rdev->flags & RADEON_IS_PX) &&
 678	     (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
 679		return -EINVAL;
 680
 681	if (rdev->asic->pm.get_temperature)
 682		temp = radeon_get_temperature(rdev);
 683	else
 684		temp = 0;
 685
 686	return sysfs_emit(buf, "%d\n", temp);
 687}
 688
 689static ssize_t radeon_hwmon_show_temp_thresh(struct device *dev,
 690					     struct device_attribute *attr,
 691					     char *buf)
 692{
 693	struct radeon_device *rdev = dev_get_drvdata(dev);
 694	int hyst = to_sensor_dev_attr(attr)->index;
 695	int temp;
 696
 697	if (hyst)
 698		temp = rdev->pm.dpm.thermal.min_temp;
 699	else
 700		temp = rdev->pm.dpm.thermal.max_temp;
 701
 702	return sysfs_emit(buf, "%d\n", temp);
 703}
 704
 705static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, radeon_hwmon_show_temp, NULL, 0);
 706static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, radeon_hwmon_show_temp_thresh, NULL, 0);
 707static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, radeon_hwmon_show_temp_thresh, NULL, 1);
 708static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, radeon_hwmon_get_pwm1, radeon_hwmon_set_pwm1, 0);
 709static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, radeon_hwmon_get_pwm1_enable, radeon_hwmon_set_pwm1_enable, 0);
 710static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, radeon_hwmon_get_pwm1_min, NULL, 0);
 711static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO, radeon_hwmon_get_pwm1_max, NULL, 0);
 712
 713static ssize_t radeon_hwmon_show_sclk(struct device *dev,
 714				      struct device_attribute *attr, char *buf)
 715{
 716	struct radeon_device *rdev = dev_get_drvdata(dev);
 717	struct drm_device *ddev = rdev->ddev;
 718	u32 sclk = 0;
 719
 720	/* Can't get clock frequency when the card is off */
 721	if ((rdev->flags & RADEON_IS_PX) &&
 722	    (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
 723		return -EINVAL;
 724
 725	if (rdev->asic->dpm.get_current_sclk)
 726		sclk = radeon_dpm_get_current_sclk(rdev);
 727
 728	/* Value returned by dpm is in 10 KHz units, need to convert it into Hz 
 729	   for hwmon */
 730	sclk *= 10000;
 731
 732	return sysfs_emit(buf, "%u\n", sclk);
 733}
 734
 735static SENSOR_DEVICE_ATTR(freq1_input, S_IRUGO, radeon_hwmon_show_sclk, NULL,
 736			  0);
 737
 738static ssize_t radeon_hwmon_show_vddc(struct device *dev,
 739				      struct device_attribute *attr, char *buf)
 740{
 741	struct radeon_device *rdev = dev_get_drvdata(dev);
 742	struct drm_device *ddev = rdev->ddev;
 743	u16 vddc = 0;
 744
 745	/* Can't get vddc when the card is off */
 746	if ((rdev->flags & RADEON_IS_PX) &&
 747		(ddev->switch_power_state != DRM_SWITCH_POWER_ON))
 748		return -EINVAL;
 749
 750	if (rdev->asic->dpm.get_current_vddc)
 751		vddc = rdev->asic->dpm.get_current_vddc(rdev);
 752
 753	return sysfs_emit(buf, "%u\n", vddc);
 754}
 755
 756static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, radeon_hwmon_show_vddc, NULL,
 757			  0);
 758
 759static struct attribute *hwmon_attributes[] = {
 760	&sensor_dev_attr_temp1_input.dev_attr.attr,
 761	&sensor_dev_attr_temp1_crit.dev_attr.attr,
 762	&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
 763	&sensor_dev_attr_pwm1.dev_attr.attr,
 764	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
 765	&sensor_dev_attr_pwm1_min.dev_attr.attr,
 766	&sensor_dev_attr_pwm1_max.dev_attr.attr,
 767	&sensor_dev_attr_freq1_input.dev_attr.attr,
 768	&sensor_dev_attr_in0_input.dev_attr.attr,
 769	NULL
 770};
 771
 772static umode_t hwmon_attributes_visible(struct kobject *kobj,
 773					struct attribute *attr, int index)
 774{
 775	struct device *dev = kobj_to_dev(kobj);
 776	struct radeon_device *rdev = dev_get_drvdata(dev);
 777	umode_t effective_mode = attr->mode;
 778
 779	/* Skip attributes if DPM is not enabled */
 780	if (rdev->pm.pm_method != PM_METHOD_DPM &&
 781	    (attr == &sensor_dev_attr_temp1_crit.dev_attr.attr ||
 782	     attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr ||
 783	     attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
 784	     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
 785	     attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
 786	     attr == &sensor_dev_attr_pwm1_min.dev_attr.attr ||
 787	     attr == &sensor_dev_attr_freq1_input.dev_attr.attr ||
 788	     attr == &sensor_dev_attr_in0_input.dev_attr.attr))
 789		return 0;
 790
 791	/* Skip vddc attribute if get_current_vddc is not implemented */
 792	if(attr == &sensor_dev_attr_in0_input.dev_attr.attr &&
 793		!rdev->asic->dpm.get_current_vddc)
 794		return 0;
 795
 796	/* Skip fan attributes if fan is not present */
 797	if (rdev->pm.no_fan &&
 798	    (attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
 799	     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
 800	     attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
 801	     attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
 802		return 0;
 803
 804	/* mask fan attributes if we have no bindings for this asic to expose */
 805	if ((!rdev->asic->dpm.get_fan_speed_percent &&
 806	     attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't query fan */
 807	    (!rdev->asic->dpm.fan_ctrl_get_mode &&
 808	     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't query state */
 809		effective_mode &= ~S_IRUGO;
 810
 811	if ((!rdev->asic->dpm.set_fan_speed_percent &&
 812	     attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't manage fan */
 813	    (!rdev->asic->dpm.fan_ctrl_set_mode &&
 814	     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't manage state */
 815		effective_mode &= ~S_IWUSR;
 816
 817	/* hide max/min values if we can't both query and manage the fan */
 818	if ((!rdev->asic->dpm.set_fan_speed_percent &&
 819	     !rdev->asic->dpm.get_fan_speed_percent) &&
 820	    (attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
 821	     attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
 822		return 0;
 823
 824	return effective_mode;
 825}
 826
 827static const struct attribute_group hwmon_attrgroup = {
 828	.attrs = hwmon_attributes,
 829	.is_visible = hwmon_attributes_visible,
 830};
 831
 832static const struct attribute_group *hwmon_groups[] = {
 833	&hwmon_attrgroup,
 834	NULL
 835};
 836
 837static int radeon_hwmon_init(struct radeon_device *rdev)
 838{
 839	int err = 0;
 840
 841	switch (rdev->pm.int_thermal_type) {
 842	case THERMAL_TYPE_RV6XX:
 843	case THERMAL_TYPE_RV770:
 844	case THERMAL_TYPE_EVERGREEN:
 845	case THERMAL_TYPE_NI:
 846	case THERMAL_TYPE_SUMO:
 847	case THERMAL_TYPE_SI:
 848	case THERMAL_TYPE_CI:
 849	case THERMAL_TYPE_KV:
 850		if (rdev->asic->pm.get_temperature == NULL)
 851			return err;
 852		rdev->pm.int_hwmon_dev = hwmon_device_register_with_groups(rdev->dev,
 853									   "radeon", rdev,
 854									   hwmon_groups);
 855		if (IS_ERR(rdev->pm.int_hwmon_dev)) {
 856			err = PTR_ERR(rdev->pm.int_hwmon_dev);
 857			dev_err(rdev->dev,
 858				"Unable to register hwmon device: %d\n", err);
 859		}
 860		break;
 861	default:
 862		break;
 863	}
 864
 865	return err;
 866}
 867
 868static void radeon_hwmon_fini(struct radeon_device *rdev)
 869{
 870	if (rdev->pm.int_hwmon_dev)
 871		hwmon_device_unregister(rdev->pm.int_hwmon_dev);
 872}
 873
 874static void radeon_dpm_thermal_work_handler(struct work_struct *work)
 875{
 876	struct radeon_device *rdev =
 877		container_of(work, struct radeon_device,
 878			     pm.dpm.thermal.work);
 879	/* switch to the thermal state */
 880	enum radeon_pm_state_type dpm_state = POWER_STATE_TYPE_INTERNAL_THERMAL;
 881
 882	if (!rdev->pm.dpm_enabled)
 883		return;
 884
 885	if (rdev->asic->pm.get_temperature) {
 886		int temp = radeon_get_temperature(rdev);
 887
 888		if (temp < rdev->pm.dpm.thermal.min_temp)
 889			/* switch back the user state */
 890			dpm_state = rdev->pm.dpm.user_state;
 891	} else {
 892		if (rdev->pm.dpm.thermal.high_to_low)
 893			/* switch back the user state */
 894			dpm_state = rdev->pm.dpm.user_state;
 895	}
 896	mutex_lock(&rdev->pm.mutex);
 897	if (dpm_state == POWER_STATE_TYPE_INTERNAL_THERMAL)
 898		rdev->pm.dpm.thermal_active = true;
 899	else
 900		rdev->pm.dpm.thermal_active = false;
 901	rdev->pm.dpm.state = dpm_state;
 902	mutex_unlock(&rdev->pm.mutex);
 903
 904	radeon_pm_compute_clocks(rdev);
 905}
 906
 907static bool radeon_dpm_single_display(struct radeon_device *rdev)
 908{
 909	bool single_display = (rdev->pm.dpm.new_active_crtc_count < 2) ?
 910		true : false;
 911
 912	/* check if the vblank period is too short to adjust the mclk */
 913	if (single_display && rdev->asic->dpm.vblank_too_short) {
 914		if (radeon_dpm_vblank_too_short(rdev))
 915			single_display = false;
 916	}
 917
 918	/* 120hz tends to be problematic even if they are under the
 919	 * vblank limit.
 920	 */
 921	if (single_display && (r600_dpm_get_vrefresh(rdev) >= 120))
 922		single_display = false;
 923
 924	return single_display;
 925}
 926
 927static struct radeon_ps *radeon_dpm_pick_power_state(struct radeon_device *rdev,
 928						     enum radeon_pm_state_type dpm_state)
 929{
 930	int i;
 931	struct radeon_ps *ps;
 932	u32 ui_class;
 933	bool single_display = radeon_dpm_single_display(rdev);
 934
 935	/* certain older asics have a separare 3D performance state,
 936	 * so try that first if the user selected performance
 937	 */
 938	if (dpm_state == POWER_STATE_TYPE_PERFORMANCE)
 939		dpm_state = POWER_STATE_TYPE_INTERNAL_3DPERF;
 940	/* balanced states don't exist at the moment */
 941	if (dpm_state == POWER_STATE_TYPE_BALANCED)
 942		dpm_state = POWER_STATE_TYPE_PERFORMANCE;
 943
 944restart_search:
 945	/* Pick the best power state based on current conditions */
 946	for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
 947		ps = &rdev->pm.dpm.ps[i];
 948		ui_class = ps->class & ATOM_PPLIB_CLASSIFICATION_UI_MASK;
 949		switch (dpm_state) {
 950		/* user states */
 951		case POWER_STATE_TYPE_BATTERY:
 952			if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BATTERY) {
 953				if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
 954					if (single_display)
 955						return ps;
 956				} else
 957					return ps;
 958			}
 959			break;
 960		case POWER_STATE_TYPE_BALANCED:
 961			if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BALANCED) {
 962				if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
 963					if (single_display)
 964						return ps;
 965				} else
 966					return ps;
 967			}
 968			break;
 969		case POWER_STATE_TYPE_PERFORMANCE:
 970			if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE) {
 971				if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
 972					if (single_display)
 973						return ps;
 974				} else
 975					return ps;
 976			}
 977			break;
 978		/* internal states */
 979		case POWER_STATE_TYPE_INTERNAL_UVD:
 980			if (rdev->pm.dpm.uvd_ps)
 981				return rdev->pm.dpm.uvd_ps;
 982			else
 983				break;
 984		case POWER_STATE_TYPE_INTERNAL_UVD_SD:
 985			if (ps->class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
 986				return ps;
 987			break;
 988		case POWER_STATE_TYPE_INTERNAL_UVD_HD:
 989			if (ps->class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
 990				return ps;
 991			break;
 992		case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
 993			if (ps->class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
 994				return ps;
 995			break;
 996		case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
 997			if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
 998				return ps;
 999			break;
1000		case POWER_STATE_TYPE_INTERNAL_BOOT:
1001			return rdev->pm.dpm.boot_ps;
1002		case POWER_STATE_TYPE_INTERNAL_THERMAL:
1003			if (ps->class & ATOM_PPLIB_CLASSIFICATION_THERMAL)
1004				return ps;
1005			break;
1006		case POWER_STATE_TYPE_INTERNAL_ACPI:
1007			if (ps->class & ATOM_PPLIB_CLASSIFICATION_ACPI)
1008				return ps;
1009			break;
1010		case POWER_STATE_TYPE_INTERNAL_ULV:
1011			if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_ULV)
1012				return ps;
1013			break;
1014		case POWER_STATE_TYPE_INTERNAL_3DPERF:
1015			if (ps->class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE)
1016				return ps;
1017			break;
1018		default:
1019			break;
1020		}
1021	}
1022	/* use a fallback state if we didn't match */
1023	switch (dpm_state) {
1024	case POWER_STATE_TYPE_INTERNAL_UVD_SD:
1025		dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
1026		goto restart_search;
1027	case POWER_STATE_TYPE_INTERNAL_UVD_HD:
1028	case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
1029	case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
1030		if (rdev->pm.dpm.uvd_ps) {
1031			return rdev->pm.dpm.uvd_ps;
1032		} else {
1033			dpm_state = POWER_STATE_TYPE_PERFORMANCE;
1034			goto restart_search;
1035		}
1036	case POWER_STATE_TYPE_INTERNAL_THERMAL:
1037		dpm_state = POWER_STATE_TYPE_INTERNAL_ACPI;
1038		goto restart_search;
1039	case POWER_STATE_TYPE_INTERNAL_ACPI:
1040		dpm_state = POWER_STATE_TYPE_BATTERY;
1041		goto restart_search;
1042	case POWER_STATE_TYPE_BATTERY:
1043	case POWER_STATE_TYPE_BALANCED:
1044	case POWER_STATE_TYPE_INTERNAL_3DPERF:
1045		dpm_state = POWER_STATE_TYPE_PERFORMANCE;
1046		goto restart_search;
1047	default:
1048		break;
1049	}
1050
1051	return NULL;
1052}
1053
1054static void radeon_dpm_change_power_state_locked(struct radeon_device *rdev)
1055{
1056	int i;
1057	struct radeon_ps *ps;
1058	enum radeon_pm_state_type dpm_state;
1059	int ret;
1060	bool single_display = radeon_dpm_single_display(rdev);
1061
1062	/* if dpm init failed */
1063	if (!rdev->pm.dpm_enabled)
1064		return;
1065
1066	if (rdev->pm.dpm.user_state != rdev->pm.dpm.state) {
1067		/* add other state override checks here */
1068		if ((!rdev->pm.dpm.thermal_active) &&
1069		    (!rdev->pm.dpm.uvd_active))
1070			rdev->pm.dpm.state = rdev->pm.dpm.user_state;
1071	}
1072	dpm_state = rdev->pm.dpm.state;
1073
1074	ps = radeon_dpm_pick_power_state(rdev, dpm_state);
1075	if (ps)
1076		rdev->pm.dpm.requested_ps = ps;
1077	else
1078		return;
1079
1080	/* no need to reprogram if nothing changed unless we are on BTC+ */
1081	if (rdev->pm.dpm.current_ps == rdev->pm.dpm.requested_ps) {
1082		/* vce just modifies an existing state so force a change */
1083		if (ps->vce_active != rdev->pm.dpm.vce_active)
1084			goto force;
1085		/* user has made a display change (such as timing) */
1086		if (rdev->pm.dpm.single_display != single_display)
1087			goto force;
1088		if ((rdev->family < CHIP_BARTS) || (rdev->flags & RADEON_IS_IGP)) {
1089			/* for pre-BTC and APUs if the num crtcs changed but state is the same,
1090			 * all we need to do is update the display configuration.
1091			 */
1092			if (rdev->pm.dpm.new_active_crtcs != rdev->pm.dpm.current_active_crtcs) {
1093				/* update display watermarks based on new power state */
1094				radeon_bandwidth_update(rdev);
1095				/* update displays */
1096				radeon_dpm_display_configuration_changed(rdev);
1097				rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1098				rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1099			}
1100			return;
1101		} else {
1102			/* for BTC+ if the num crtcs hasn't changed and state is the same,
1103			 * nothing to do, if the num crtcs is > 1 and state is the same,
1104			 * update display configuration.
1105			 */
1106			if (rdev->pm.dpm.new_active_crtcs ==
1107			    rdev->pm.dpm.current_active_crtcs) {
1108				return;
1109			} else {
1110				if ((rdev->pm.dpm.current_active_crtc_count > 1) &&
1111				    (rdev->pm.dpm.new_active_crtc_count > 1)) {
1112					/* update display watermarks based on new power state */
1113					radeon_bandwidth_update(rdev);
1114					/* update displays */
1115					radeon_dpm_display_configuration_changed(rdev);
1116					rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1117					rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1118					return;
1119				}
1120			}
1121		}
1122	}
1123
1124force:
1125	if (radeon_dpm == 1) {
1126		printk("switching from power state:\n");
1127		radeon_dpm_print_power_state(rdev, rdev->pm.dpm.current_ps);
1128		printk("switching to power state:\n");
1129		radeon_dpm_print_power_state(rdev, rdev->pm.dpm.requested_ps);
1130	}
1131
1132	down_write(&rdev->pm.mclk_lock);
1133	mutex_lock(&rdev->ring_lock);
1134
1135	/* update whether vce is active */
1136	ps->vce_active = rdev->pm.dpm.vce_active;
1137
1138	ret = radeon_dpm_pre_set_power_state(rdev);
1139	if (ret)
1140		goto done;
1141
1142	/* update display watermarks based on new power state */
1143	radeon_bandwidth_update(rdev);
1144	/* update displays */
1145	radeon_dpm_display_configuration_changed(rdev);
1146
1147	/* wait for the rings to drain */
1148	for (i = 0; i < RADEON_NUM_RINGS; i++) {
1149		struct radeon_ring *ring = &rdev->ring[i];
1150		if (ring->ready)
1151			radeon_fence_wait_empty(rdev, i);
1152	}
1153
1154	/* program the new power state */
1155	radeon_dpm_set_power_state(rdev);
1156
1157	/* update current power state */
1158	rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps;
1159
1160	radeon_dpm_post_set_power_state(rdev);
1161
1162	rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
1163	rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
1164	rdev->pm.dpm.single_display = single_display;
1165
1166	if (rdev->asic->dpm.force_performance_level) {
1167		if (rdev->pm.dpm.thermal_active) {
1168			enum radeon_dpm_forced_level level = rdev->pm.dpm.forced_level;
1169			/* force low perf level for thermal */
1170			radeon_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_LOW);
1171			/* save the user's level */
1172			rdev->pm.dpm.forced_level = level;
1173		} else {
1174			/* otherwise, user selected level */
1175			radeon_dpm_force_performance_level(rdev, rdev->pm.dpm.forced_level);
1176		}
1177	}
1178
1179done:
1180	mutex_unlock(&rdev->ring_lock);
1181	up_write(&rdev->pm.mclk_lock);
1182}
1183
1184void radeon_dpm_enable_uvd(struct radeon_device *rdev, bool enable)
1185{
1186	enum radeon_pm_state_type dpm_state;
1187
1188	if (rdev->asic->dpm.powergate_uvd) {
1189		mutex_lock(&rdev->pm.mutex);
1190		/* don't powergate anything if we
1191		   have active but pause streams */
1192		enable |= rdev->pm.dpm.sd > 0;
1193		enable |= rdev->pm.dpm.hd > 0;
1194		/* enable/disable UVD */
1195		radeon_dpm_powergate_uvd(rdev, !enable);
1196		mutex_unlock(&rdev->pm.mutex);
1197	} else {
1198		if (enable) {
1199			mutex_lock(&rdev->pm.mutex);
1200			rdev->pm.dpm.uvd_active = true;
1201			/* disable this for now */
1202#if 0
1203			if ((rdev->pm.dpm.sd == 1) && (rdev->pm.dpm.hd == 0))
1204				dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_SD;
1205			else if ((rdev->pm.dpm.sd == 2) && (rdev->pm.dpm.hd == 0))
1206				dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
1207			else if ((rdev->pm.dpm.sd == 0) && (rdev->pm.dpm.hd == 1))
1208				dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
1209			else if ((rdev->pm.dpm.sd == 0) && (rdev->pm.dpm.hd == 2))
1210				dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD2;
1211			else
1212#endif
1213				dpm_state = POWER_STATE_TYPE_INTERNAL_UVD;
1214			rdev->pm.dpm.state = dpm_state;
1215			mutex_unlock(&rdev->pm.mutex);
1216		} else {
1217			mutex_lock(&rdev->pm.mutex);
1218			rdev->pm.dpm.uvd_active = false;
1219			mutex_unlock(&rdev->pm.mutex);
1220		}
1221
1222		radeon_pm_compute_clocks(rdev);
1223	}
1224}
1225
1226void radeon_dpm_enable_vce(struct radeon_device *rdev, bool enable)
1227{
1228	if (enable) {
1229		mutex_lock(&rdev->pm.mutex);
1230		rdev->pm.dpm.vce_active = true;
1231		/* XXX select vce level based on ring/task */
1232		rdev->pm.dpm.vce_level = RADEON_VCE_LEVEL_AC_ALL;
1233		mutex_unlock(&rdev->pm.mutex);
1234	} else {
1235		mutex_lock(&rdev->pm.mutex);
1236		rdev->pm.dpm.vce_active = false;
1237		mutex_unlock(&rdev->pm.mutex);
1238	}
1239
1240	radeon_pm_compute_clocks(rdev);
1241}
1242
1243static void radeon_pm_suspend_old(struct radeon_device *rdev)
1244{
1245	mutex_lock(&rdev->pm.mutex);
1246	if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1247		if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE)
1248			rdev->pm.dynpm_state = DYNPM_STATE_SUSPENDED;
1249	}
1250	mutex_unlock(&rdev->pm.mutex);
1251
1252	cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
1253}
1254
1255static void radeon_pm_suspend_dpm(struct radeon_device *rdev)
1256{
1257	mutex_lock(&rdev->pm.mutex);
1258	/* disable dpm */
1259	radeon_dpm_disable(rdev);
1260	/* reset the power state */
1261	rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1262	rdev->pm.dpm_enabled = false;
1263	mutex_unlock(&rdev->pm.mutex);
1264}
1265
1266void radeon_pm_suspend(struct radeon_device *rdev)
1267{
1268	if (rdev->pm.pm_method == PM_METHOD_DPM)
1269		radeon_pm_suspend_dpm(rdev);
1270	else
1271		radeon_pm_suspend_old(rdev);
1272}
1273
1274static void radeon_pm_resume_old(struct radeon_device *rdev)
1275{
1276	/* set up the default clocks if the MC ucode is loaded */
1277	if ((rdev->family >= CHIP_BARTS) &&
1278	    (rdev->family <= CHIP_CAYMAN) &&
1279	    rdev->mc_fw) {
1280		if (rdev->pm.default_vddc)
1281			radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1282						SET_VOLTAGE_TYPE_ASIC_VDDC);
1283		if (rdev->pm.default_vddci)
1284			radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1285						SET_VOLTAGE_TYPE_ASIC_VDDCI);
1286		if (rdev->pm.default_sclk)
1287			radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1288		if (rdev->pm.default_mclk)
1289			radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1290	}
1291	/* asic init will reset the default power state */
1292	mutex_lock(&rdev->pm.mutex);
1293	rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
1294	rdev->pm.current_clock_mode_index = 0;
1295	rdev->pm.current_sclk = rdev->pm.default_sclk;
1296	rdev->pm.current_mclk = rdev->pm.default_mclk;
1297	if (rdev->pm.power_state) {
1298		rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
1299		rdev->pm.current_vddci = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.vddci;
1300	}
1301	if (rdev->pm.pm_method == PM_METHOD_DYNPM
1302	    && rdev->pm.dynpm_state == DYNPM_STATE_SUSPENDED) {
1303		rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1304		schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1305				      msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1306	}
1307	mutex_unlock(&rdev->pm.mutex);
1308	radeon_pm_compute_clocks(rdev);
1309}
1310
1311static void radeon_pm_resume_dpm(struct radeon_device *rdev)
1312{
1313	int ret;
1314
1315	/* asic init will reset to the boot state */
1316	mutex_lock(&rdev->pm.mutex);
1317	rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1318	radeon_dpm_setup_asic(rdev);
1319	ret = radeon_dpm_enable(rdev);
1320	mutex_unlock(&rdev->pm.mutex);
1321	if (ret)
1322		goto dpm_resume_fail;
1323	rdev->pm.dpm_enabled = true;
1324	return;
1325
1326dpm_resume_fail:
1327	DRM_ERROR("radeon: dpm resume failed\n");
1328	if ((rdev->family >= CHIP_BARTS) &&
1329	    (rdev->family <= CHIP_CAYMAN) &&
1330	    rdev->mc_fw) {
1331		if (rdev->pm.default_vddc)
1332			radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1333						SET_VOLTAGE_TYPE_ASIC_VDDC);
1334		if (rdev->pm.default_vddci)
1335			radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1336						SET_VOLTAGE_TYPE_ASIC_VDDCI);
1337		if (rdev->pm.default_sclk)
1338			radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1339		if (rdev->pm.default_mclk)
1340			radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1341	}
1342}
1343
1344void radeon_pm_resume(struct radeon_device *rdev)
1345{
1346	if (rdev->pm.pm_method == PM_METHOD_DPM)
1347		radeon_pm_resume_dpm(rdev);
1348	else
1349		radeon_pm_resume_old(rdev);
1350}
1351
1352static int radeon_pm_init_old(struct radeon_device *rdev)
1353{
1354	int ret;
1355
1356	rdev->pm.profile = PM_PROFILE_DEFAULT;
1357	rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
1358	rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1359	rdev->pm.dynpm_can_upclock = true;
1360	rdev->pm.dynpm_can_downclock = true;
1361	rdev->pm.default_sclk = rdev->clock.default_sclk;
1362	rdev->pm.default_mclk = rdev->clock.default_mclk;
1363	rdev->pm.current_sclk = rdev->clock.default_sclk;
1364	rdev->pm.current_mclk = rdev->clock.default_mclk;
1365	rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
1366
1367	if (rdev->bios) {
1368		if (rdev->is_atom_bios)
1369			radeon_atombios_get_power_modes(rdev);
1370		else
1371			radeon_combios_get_power_modes(rdev);
1372		radeon_pm_print_states(rdev);
1373		radeon_pm_init_profile(rdev);
1374		/* set up the default clocks if the MC ucode is loaded */
1375		if ((rdev->family >= CHIP_BARTS) &&
1376		    (rdev->family <= CHIP_CAYMAN) &&
1377		    rdev->mc_fw) {
1378			if (rdev->pm.default_vddc)
1379				radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1380							SET_VOLTAGE_TYPE_ASIC_VDDC);
1381			if (rdev->pm.default_vddci)
1382				radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1383							SET_VOLTAGE_TYPE_ASIC_VDDCI);
1384			if (rdev->pm.default_sclk)
1385				radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1386			if (rdev->pm.default_mclk)
1387				radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1388		}
1389	}
1390
1391	/* set up the internal thermal sensor if applicable */
1392	ret = radeon_hwmon_init(rdev);
1393	if (ret)
1394		return ret;
1395
1396	INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
1397
1398	if (rdev->pm.num_power_states > 1) {
1399		radeon_debugfs_pm_init(rdev);
 
 
 
1400		DRM_INFO("radeon: power management initialized\n");
1401	}
1402
1403	return 0;
1404}
1405
1406static void radeon_dpm_print_power_states(struct radeon_device *rdev)
1407{
1408	int i;
1409
1410	for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
1411		printk("== power state %d ==\n", i);
1412		radeon_dpm_print_power_state(rdev, &rdev->pm.dpm.ps[i]);
1413	}
1414}
1415
1416static int radeon_pm_init_dpm(struct radeon_device *rdev)
1417{
1418	int ret;
1419
1420	/* default to balanced state */
1421	rdev->pm.dpm.state = POWER_STATE_TYPE_BALANCED;
1422	rdev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
1423	rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;
1424	rdev->pm.default_sclk = rdev->clock.default_sclk;
1425	rdev->pm.default_mclk = rdev->clock.default_mclk;
1426	rdev->pm.current_sclk = rdev->clock.default_sclk;
1427	rdev->pm.current_mclk = rdev->clock.default_mclk;
1428	rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
1429
1430	if (rdev->bios && rdev->is_atom_bios)
1431		radeon_atombios_get_power_modes(rdev);
1432	else
1433		return -EINVAL;
1434
1435	/* set up the internal thermal sensor if applicable */
1436	ret = radeon_hwmon_init(rdev);
1437	if (ret)
1438		return ret;
1439
1440	INIT_WORK(&rdev->pm.dpm.thermal.work, radeon_dpm_thermal_work_handler);
1441	mutex_lock(&rdev->pm.mutex);
1442	radeon_dpm_init(rdev);
1443	rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps = rdev->pm.dpm.boot_ps;
1444	if (radeon_dpm == 1)
1445		radeon_dpm_print_power_states(rdev);
1446	radeon_dpm_setup_asic(rdev);
1447	ret = radeon_dpm_enable(rdev);
1448	mutex_unlock(&rdev->pm.mutex);
1449	if (ret)
1450		goto dpm_failed;
1451	rdev->pm.dpm_enabled = true;
1452
1453	radeon_debugfs_pm_init(rdev);
 
 
1454
1455	DRM_INFO("radeon: dpm initialized\n");
1456
1457	return 0;
1458
1459dpm_failed:
1460	rdev->pm.dpm_enabled = false;
1461	if ((rdev->family >= CHIP_BARTS) &&
1462	    (rdev->family <= CHIP_CAYMAN) &&
1463	    rdev->mc_fw) {
1464		if (rdev->pm.default_vddc)
1465			radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
1466						SET_VOLTAGE_TYPE_ASIC_VDDC);
1467		if (rdev->pm.default_vddci)
1468			radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
1469						SET_VOLTAGE_TYPE_ASIC_VDDCI);
1470		if (rdev->pm.default_sclk)
1471			radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
1472		if (rdev->pm.default_mclk)
1473			radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
1474	}
1475	DRM_ERROR("radeon: dpm initialization failed\n");
1476	return ret;
1477}
1478
1479struct radeon_dpm_quirk {
1480	u32 chip_vendor;
1481	u32 chip_device;
1482	u32 subsys_vendor;
1483	u32 subsys_device;
1484};
1485
1486/* cards with dpm stability problems */
1487static struct radeon_dpm_quirk radeon_dpm_quirk_list[] = {
1488	/* TURKS - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386534 */
1489	{ PCI_VENDOR_ID_ATI, 0x6759, 0x1682, 0x3195 },
1490	/* TURKS - https://bugzilla.kernel.org/show_bug.cgi?id=83731 */
1491	{ PCI_VENDOR_ID_ATI, 0x6840, 0x1179, 0xfb81 },
1492	{ 0, 0, 0, 0 },
1493};
1494
1495int radeon_pm_init(struct radeon_device *rdev)
1496{
1497	struct radeon_dpm_quirk *p = radeon_dpm_quirk_list;
1498	bool disable_dpm = false;
1499
1500	/* Apply dpm quirks */
1501	while (p && p->chip_device != 0) {
1502		if (rdev->pdev->vendor == p->chip_vendor &&
1503		    rdev->pdev->device == p->chip_device &&
1504		    rdev->pdev->subsystem_vendor == p->subsys_vendor &&
1505		    rdev->pdev->subsystem_device == p->subsys_device) {
1506			disable_dpm = true;
1507			break;
1508		}
1509		++p;
1510	}
1511
1512	/* enable dpm on rv6xx+ */
1513	switch (rdev->family) {
1514	case CHIP_RV610:
1515	case CHIP_RV630:
1516	case CHIP_RV620:
1517	case CHIP_RV635:
1518	case CHIP_RV670:
1519	case CHIP_RS780:
1520	case CHIP_RS880:
1521	case CHIP_RV770:
1522		/* DPM requires the RLC, RV770+ dGPU requires SMC */
1523		if (!rdev->rlc_fw)
1524			rdev->pm.pm_method = PM_METHOD_PROFILE;
1525		else if ((rdev->family >= CHIP_RV770) &&
1526			 (!(rdev->flags & RADEON_IS_IGP)) &&
1527			 (!rdev->smc_fw))
1528			rdev->pm.pm_method = PM_METHOD_PROFILE;
1529		else if (radeon_dpm == 1)
1530			rdev->pm.pm_method = PM_METHOD_DPM;
1531		else
1532			rdev->pm.pm_method = PM_METHOD_PROFILE;
1533		break;
1534	case CHIP_RV730:
1535	case CHIP_RV710:
1536	case CHIP_RV740:
1537	case CHIP_CEDAR:
1538	case CHIP_REDWOOD:
1539	case CHIP_JUNIPER:
1540	case CHIP_CYPRESS:
1541	case CHIP_HEMLOCK:
1542	case CHIP_PALM:
1543	case CHIP_SUMO:
1544	case CHIP_SUMO2:
1545	case CHIP_BARTS:
1546	case CHIP_TURKS:
1547	case CHIP_CAICOS:
1548	case CHIP_CAYMAN:
1549	case CHIP_ARUBA:
1550	case CHIP_TAHITI:
1551	case CHIP_PITCAIRN:
1552	case CHIP_VERDE:
1553	case CHIP_OLAND:
1554	case CHIP_HAINAN:
1555	case CHIP_BONAIRE:
1556	case CHIP_KABINI:
1557	case CHIP_KAVERI:
1558	case CHIP_HAWAII:
1559	case CHIP_MULLINS:
1560		/* DPM requires the RLC, RV770+ dGPU requires SMC */
1561		if (!rdev->rlc_fw)
1562			rdev->pm.pm_method = PM_METHOD_PROFILE;
1563		else if ((rdev->family >= CHIP_RV770) &&
1564			 (!(rdev->flags & RADEON_IS_IGP)) &&
1565			 (!rdev->smc_fw))
1566			rdev->pm.pm_method = PM_METHOD_PROFILE;
1567		else if (disable_dpm && (radeon_dpm == -1))
1568			rdev->pm.pm_method = PM_METHOD_PROFILE;
1569		else if (radeon_dpm == 0)
1570			rdev->pm.pm_method = PM_METHOD_PROFILE;
1571		else
1572			rdev->pm.pm_method = PM_METHOD_DPM;
1573		break;
1574	default:
1575		/* default to profile method */
1576		rdev->pm.pm_method = PM_METHOD_PROFILE;
1577		break;
1578	}
1579
1580	if (rdev->pm.pm_method == PM_METHOD_DPM)
1581		return radeon_pm_init_dpm(rdev);
1582	else
1583		return radeon_pm_init_old(rdev);
1584}
1585
1586int radeon_pm_late_init(struct radeon_device *rdev)
1587{
1588	int ret = 0;
1589
1590	if (rdev->pm.pm_method == PM_METHOD_DPM) {
1591		if (rdev->pm.dpm_enabled) {
1592			if (!rdev->pm.sysfs_initialized) {
1593				ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
1594				if (ret)
1595					DRM_ERROR("failed to create device file for dpm state\n");
1596				ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
1597				if (ret)
1598					DRM_ERROR("failed to create device file for dpm state\n");
1599				/* XXX: these are noops for dpm but are here for backwards compat */
1600				ret = device_create_file(rdev->dev, &dev_attr_power_profile);
1601				if (ret)
1602					DRM_ERROR("failed to create device file for power profile\n");
1603				ret = device_create_file(rdev->dev, &dev_attr_power_method);
1604				if (ret)
1605					DRM_ERROR("failed to create device file for power method\n");
1606				rdev->pm.sysfs_initialized = true;
1607			}
1608
1609			mutex_lock(&rdev->pm.mutex);
1610			ret = radeon_dpm_late_enable(rdev);
1611			mutex_unlock(&rdev->pm.mutex);
1612			if (ret) {
1613				rdev->pm.dpm_enabled = false;
1614				DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1615			} else {
1616				/* set the dpm state for PX since there won't be
1617				 * a modeset to call this.
1618				 */
1619				radeon_pm_compute_clocks(rdev);
1620			}
1621		}
1622	} else {
1623		if ((rdev->pm.num_power_states > 1) &&
1624		    (!rdev->pm.sysfs_initialized)) {
1625			/* where's the best place to put these? */
1626			ret = device_create_file(rdev->dev, &dev_attr_power_profile);
1627			if (ret)
1628				DRM_ERROR("failed to create device file for power profile\n");
1629			ret = device_create_file(rdev->dev, &dev_attr_power_method);
1630			if (ret)
1631				DRM_ERROR("failed to create device file for power method\n");
1632			else
1633				rdev->pm.sysfs_initialized = true;
1634		}
1635	}
1636	return ret;
1637}
1638
1639static void radeon_pm_fini_old(struct radeon_device *rdev)
1640{
1641	if (rdev->pm.num_power_states > 1) {
1642		mutex_lock(&rdev->pm.mutex);
1643		if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
1644			rdev->pm.profile = PM_PROFILE_DEFAULT;
1645			radeon_pm_update_profile(rdev);
1646			radeon_pm_set_clocks(rdev);
1647		} else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1648			/* reset default clocks */
1649			rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
1650			rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
1651			radeon_pm_set_clocks(rdev);
1652		}
1653		mutex_unlock(&rdev->pm.mutex);
1654
1655		cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
1656
1657		device_remove_file(rdev->dev, &dev_attr_power_profile);
1658		device_remove_file(rdev->dev, &dev_attr_power_method);
1659	}
1660
1661	radeon_hwmon_fini(rdev);
1662	kfree(rdev->pm.power_state);
1663}
1664
1665static void radeon_pm_fini_dpm(struct radeon_device *rdev)
1666{
1667	if (rdev->pm.num_power_states > 1) {
1668		mutex_lock(&rdev->pm.mutex);
1669		radeon_dpm_disable(rdev);
1670		mutex_unlock(&rdev->pm.mutex);
1671
1672		device_remove_file(rdev->dev, &dev_attr_power_dpm_state);
1673		device_remove_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
1674		/* XXX backwards compat */
1675		device_remove_file(rdev->dev, &dev_attr_power_profile);
1676		device_remove_file(rdev->dev, &dev_attr_power_method);
1677	}
1678	radeon_dpm_fini(rdev);
1679
1680	radeon_hwmon_fini(rdev);
1681	kfree(rdev->pm.power_state);
1682}
1683
1684void radeon_pm_fini(struct radeon_device *rdev)
1685{
1686	if (rdev->pm.pm_method == PM_METHOD_DPM)
1687		radeon_pm_fini_dpm(rdev);
1688	else
1689		radeon_pm_fini_old(rdev);
1690}
1691
1692static void radeon_pm_compute_clocks_old(struct radeon_device *rdev)
1693{
1694	struct drm_device *ddev = rdev->ddev;
1695	struct drm_crtc *crtc;
1696	struct radeon_crtc *radeon_crtc;
1697
1698	if (rdev->pm.num_power_states < 2)
1699		return;
1700
1701	mutex_lock(&rdev->pm.mutex);
1702
1703	rdev->pm.active_crtcs = 0;
1704	rdev->pm.active_crtc_count = 0;
1705	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
1706		list_for_each_entry(crtc,
1707				    &ddev->mode_config.crtc_list, head) {
1708			radeon_crtc = to_radeon_crtc(crtc);
1709			if (radeon_crtc->enabled) {
1710				rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
1711				rdev->pm.active_crtc_count++;
1712			}
1713		}
1714	}
1715
1716	if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
1717		radeon_pm_update_profile(rdev);
1718		radeon_pm_set_clocks(rdev);
1719	} else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
1720		if (rdev->pm.dynpm_state != DYNPM_STATE_DISABLED) {
1721			if (rdev->pm.active_crtc_count > 1) {
1722				if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
1723					cancel_delayed_work(&rdev->pm.dynpm_idle_work);
1724
1725					rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
1726					rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
1727					radeon_pm_get_dynpm_state(rdev);
1728					radeon_pm_set_clocks(rdev);
1729
1730					DRM_DEBUG_DRIVER("radeon: dynamic power management deactivated\n");
1731				}
1732			} else if (rdev->pm.active_crtc_count == 1) {
1733				/* TODO: Increase clocks if needed for current mode */
1734
1735				if (rdev->pm.dynpm_state == DYNPM_STATE_MINIMUM) {
1736					rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1737					rdev->pm.dynpm_planned_action = DYNPM_ACTION_UPCLOCK;
1738					radeon_pm_get_dynpm_state(rdev);
1739					radeon_pm_set_clocks(rdev);
1740
1741					schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1742							      msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1743				} else if (rdev->pm.dynpm_state == DYNPM_STATE_PAUSED) {
1744					rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
1745					schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1746							      msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1747					DRM_DEBUG_DRIVER("radeon: dynamic power management activated\n");
1748				}
1749			} else { /* count == 0 */
1750				if (rdev->pm.dynpm_state != DYNPM_STATE_MINIMUM) {
1751					cancel_delayed_work(&rdev->pm.dynpm_idle_work);
1752
1753					rdev->pm.dynpm_state = DYNPM_STATE_MINIMUM;
1754					rdev->pm.dynpm_planned_action = DYNPM_ACTION_MINIMUM;
1755					radeon_pm_get_dynpm_state(rdev);
1756					radeon_pm_set_clocks(rdev);
1757				}
1758			}
1759		}
1760	}
1761
1762	mutex_unlock(&rdev->pm.mutex);
1763}
1764
1765static void radeon_pm_compute_clocks_dpm(struct radeon_device *rdev)
1766{
1767	struct drm_device *ddev = rdev->ddev;
1768	struct drm_crtc *crtc;
1769	struct radeon_crtc *radeon_crtc;
1770	struct radeon_connector *radeon_connector;
1771
1772	if (!rdev->pm.dpm_enabled)
1773		return;
1774
1775	mutex_lock(&rdev->pm.mutex);
1776
1777	/* update active crtc counts */
1778	rdev->pm.dpm.new_active_crtcs = 0;
1779	rdev->pm.dpm.new_active_crtc_count = 0;
1780	rdev->pm.dpm.high_pixelclock_count = 0;
1781	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
1782		list_for_each_entry(crtc,
1783				    &ddev->mode_config.crtc_list, head) {
1784			radeon_crtc = to_radeon_crtc(crtc);
1785			if (crtc->enabled) {
1786				rdev->pm.dpm.new_active_crtcs |= (1 << radeon_crtc->crtc_id);
1787				rdev->pm.dpm.new_active_crtc_count++;
1788				if (!radeon_crtc->connector)
1789					continue;
1790
1791				radeon_connector = to_radeon_connector(radeon_crtc->connector);
1792				if (radeon_connector->pixelclock_for_modeset > 297000)
1793					rdev->pm.dpm.high_pixelclock_count++;
1794			}
1795		}
1796	}
1797
1798	/* update battery/ac status */
1799	if (power_supply_is_system_supplied() > 0)
1800		rdev->pm.dpm.ac_power = true;
1801	else
1802		rdev->pm.dpm.ac_power = false;
1803
1804	radeon_dpm_change_power_state_locked(rdev);
1805
1806	mutex_unlock(&rdev->pm.mutex);
1807
1808}
1809
1810void radeon_pm_compute_clocks(struct radeon_device *rdev)
1811{
1812	if (rdev->pm.pm_method == PM_METHOD_DPM)
1813		radeon_pm_compute_clocks_dpm(rdev);
1814	else
1815		radeon_pm_compute_clocks_old(rdev);
1816}
1817
1818static bool radeon_pm_in_vbl(struct radeon_device *rdev)
1819{
1820	int  crtc, vpos, hpos, vbl_status;
1821	bool in_vbl = true;
1822
1823	/* Iterate over all active crtc's. All crtc's must be in vblank,
1824	 * otherwise return in_vbl == false.
1825	 */
1826	for (crtc = 0; (crtc < rdev->num_crtc) && in_vbl; crtc++) {
1827		if (rdev->pm.active_crtcs & (1 << crtc)) {
1828			vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev,
1829								crtc,
1830								USE_REAL_VBLANKSTART,
1831								&vpos, &hpos, NULL, NULL,
1832								&rdev->mode_info.crtcs[crtc]->base.hwmode);
1833			if ((vbl_status & DRM_SCANOUTPOS_VALID) &&
1834			    !(vbl_status & DRM_SCANOUTPOS_IN_VBLANK))
1835				in_vbl = false;
1836		}
1837	}
1838
1839	return in_vbl;
1840}
1841
1842static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
1843{
1844	u32 stat_crtc = 0;
1845	bool in_vbl = radeon_pm_in_vbl(rdev);
1846
1847	if (!in_vbl)
1848		DRM_DEBUG_DRIVER("not in vbl for pm change %08x at %s\n", stat_crtc,
1849			 finish ? "exit" : "entry");
1850	return in_vbl;
1851}
1852
1853static void radeon_dynpm_idle_work_handler(struct work_struct *work)
1854{
1855	struct radeon_device *rdev;
1856	int resched;
1857	rdev = container_of(work, struct radeon_device,
1858				pm.dynpm_idle_work.work);
1859
1860	resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
1861	mutex_lock(&rdev->pm.mutex);
1862	if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
1863		int not_processed = 0;
1864		int i;
1865
1866		for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1867			struct radeon_ring *ring = &rdev->ring[i];
1868
1869			if (ring->ready) {
1870				not_processed += radeon_fence_count_emitted(rdev, i);
1871				if (not_processed >= 3)
1872					break;
1873			}
1874		}
1875
1876		if (not_processed >= 3) { /* should upclock */
1877			if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_DOWNCLOCK) {
1878				rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1879			} else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
1880				   rdev->pm.dynpm_can_upclock) {
1881				rdev->pm.dynpm_planned_action =
1882					DYNPM_ACTION_UPCLOCK;
1883				rdev->pm.dynpm_action_timeout = jiffies +
1884				msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
1885			}
1886		} else if (not_processed == 0) { /* should downclock */
1887			if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_UPCLOCK) {
1888				rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
1889			} else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
1890				   rdev->pm.dynpm_can_downclock) {
1891				rdev->pm.dynpm_planned_action =
1892					DYNPM_ACTION_DOWNCLOCK;
1893				rdev->pm.dynpm_action_timeout = jiffies +
1894				msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
1895			}
1896		}
1897
1898		/* Note, radeon_pm_set_clocks is called with static_switch set
1899		 * to false since we want to wait for vbl to avoid flicker.
1900		 */
1901		if (rdev->pm.dynpm_planned_action != DYNPM_ACTION_NONE &&
1902		    time_after(jiffies, rdev->pm.dynpm_action_timeout)) {
1903			radeon_pm_get_dynpm_state(rdev);
1904			radeon_pm_set_clocks(rdev);
1905		}
1906
1907		schedule_delayed_work(&rdev->pm.dynpm_idle_work,
1908				      msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
1909	}
1910	mutex_unlock(&rdev->pm.mutex);
1911	ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
1912}
1913
1914/*
1915 * Debugfs info
1916 */
1917#if defined(CONFIG_DEBUG_FS)
1918
1919static int radeon_debugfs_pm_info_show(struct seq_file *m, void *unused)
1920{
1921	struct radeon_device *rdev = (struct radeon_device *)m->private;
 
 
1922	struct drm_device *ddev = rdev->ddev;
1923
1924	if  ((rdev->flags & RADEON_IS_PX) &&
1925	     (ddev->switch_power_state != DRM_SWITCH_POWER_ON)) {
1926		seq_printf(m, "PX asic powered off\n");
1927	} else if (rdev->pm.dpm_enabled) {
1928		mutex_lock(&rdev->pm.mutex);
1929		if (rdev->asic->dpm.debugfs_print_current_performance_level)
1930			radeon_dpm_debugfs_print_current_performance_level(rdev, m);
1931		else
1932			seq_printf(m, "Debugfs support not implemented for this asic\n");
1933		mutex_unlock(&rdev->pm.mutex);
1934	} else {
1935		seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);
1936		/* radeon_get_engine_clock is not reliable on APUs so just print the current clock */
1937		if ((rdev->family >= CHIP_PALM) && (rdev->flags & RADEON_IS_IGP))
1938			seq_printf(m, "current engine clock: %u0 kHz\n", rdev->pm.current_sclk);
1939		else
1940			seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
1941		seq_printf(m, "default memory clock: %u0 kHz\n", rdev->pm.default_mclk);
1942		if (rdev->asic->pm.get_memory_clock)
1943			seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
1944		if (rdev->pm.current_vddc)
1945			seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);
1946		if (rdev->asic->pm.get_pcie_lanes)
1947			seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
1948	}
1949
1950	return 0;
1951}
1952
1953DEFINE_SHOW_ATTRIBUTE(radeon_debugfs_pm_info);
 
 
1954#endif
1955
1956static void radeon_debugfs_pm_init(struct radeon_device *rdev)
1957{
1958#if defined(CONFIG_DEBUG_FS)
1959	struct dentry *root = rdev->ddev->primary->debugfs_root;
1960
1961	debugfs_create_file("radeon_pm_info", 0444, root, rdev,
1962			    &radeon_debugfs_pm_info_fops);
1963
1964#endif
1965}