drivers/gpu/drm/amd/pm/amdgpu_dpm_internal.c

   1 /*
   2  * Copyright 2021 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23
  24 #include "amdgpu.h"
  25 #include "amdgpu_display.h"
  26 #include "hwmgr.h"
  27 #include "amdgpu_smu.h"
  28 #include "amdgpu_dpm_internal.h"
  29
  30 void amdgpu_dpm_get_active_displays(struct amdgpu_device *adev)
  31 {
  32         struct drm_device *ddev = adev_to_drm(adev);
  33         struct drm_crtc *crtc;
  34         struct amdgpu_crtc *amdgpu_crtc;
  35
  36         adev->pm.dpm.new_active_crtcs = 0;
  37         adev->pm.dpm.new_active_crtc_count = 0;
  38         if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
  39                 list_for_each_entry(crtc,
  40                                     &ddev->mode_config.crtc_list, head) {
  41                         amdgpu_crtc = to_amdgpu_crtc(crtc);
  42                         if (amdgpu_crtc->enabled) {
  43                                 adev->pm.dpm.new_active_crtcs |= (1 << amdgpu_crtc->crtc_id);
  44                                 adev->pm.dpm.new_active_crtc_count++;
  45                         }
  46                 }
  47         }
  48 }
  49
  50 u32 amdgpu_dpm_get_vblank_time(struct amdgpu_device *adev)
  51 {
  52         struct drm_device *dev = adev_to_drm(adev);
  53         struct drm_crtc *crtc;
  54         struct amdgpu_crtc *amdgpu_crtc;
  55         u32 vblank_in_pixels;
  56         u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
  57
  58         if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
  59                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  60                         amdgpu_crtc = to_amdgpu_crtc(crtc);
  61                         if (crtc->enabled && amdgpu_crtc->enabled && amdgpu_crtc->hw_mode.clock) {
  62                                 vblank_in_pixels =
  63                                         amdgpu_crtc->hw_mode.crtc_htotal *
  64                                         (amdgpu_crtc->hw_mode.crtc_vblank_end -
  65                                         amdgpu_crtc->hw_mode.crtc_vdisplay +
  66                                         (amdgpu_crtc->v_border * 2));
  67
  68                                 vblank_time_us = vblank_in_pixels * 1000 / amdgpu_crtc->hw_mode.clock;
  69                                 break;
  70                         }
  71                 }
  72         }
  73
  74         return vblank_time_us;
  75 }
  76
  77 u32 amdgpu_dpm_get_vrefresh(struct amdgpu_device *adev)
  78 {
  79         struct drm_device *dev = adev_to_drm(adev);
  80         struct drm_crtc *crtc;
  81         struct amdgpu_crtc *amdgpu_crtc;
  82         u32 vrefresh = 0;
  83
  84         if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
  85                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  86                         amdgpu_crtc = to_amdgpu_crtc(crtc);
  87                         if (crtc->enabled && amdgpu_crtc->enabled && amdgpu_crtc->hw_mode.clock) {
  88                                 vrefresh = drm_mode_vrefresh(&amdgpu_crtc->hw_mode);
  89                                 break;
  90                         }
  91                 }
  92         }
  93
  94         return vrefresh;
  95 }