drivers/gpu/drm/amd/powerplay/hwmgr/iceland_clockpowergating.c

   1 /*
   2  * Copyright 2016 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  * Author: Huang Rui <ray.huang@amd.com>
  23  *
  24  */
  25
  26 #include "hwmgr.h"
  27 #include "iceland_clockpowergating.h"
  28 #include "ppsmc.h"
  29 #include "iceland_hwmgr.h"
  30
  31 int iceland_phm_powerdown_uvd(struct pp_hwmgr *hwmgr)
  32 {
  33         /* iceland does not have MM hardware block */
  34         return 0;
  35 }
  36
  37 static int iceland_phm_powerup_uvd(struct pp_hwmgr *hwmgr)
  38 {
  39         /* iceland does not have MM hardware block */
  40         return 0;
  41 }
  42
  43 static int iceland_phm_powerdown_vce(struct pp_hwmgr *hwmgr)
  44 {
  45         /* iceland does not have MM hardware block */
  46         return 0;
  47 }
  48
  49 static int iceland_phm_powerup_vce(struct pp_hwmgr *hwmgr)
  50 {
  51         /* iceland does not have MM hardware block */
  52         return 0;
  53 }
  54
  55 int iceland_phm_set_asic_block_gating(struct pp_hwmgr *hwmgr, enum
  56                 PHM_AsicBlock block, enum PHM_ClockGateSetting gating)
  57 {
  58         int ret = 0;
  59
  60         switch (block) {
  61         case PHM_AsicBlock_UVD_MVC:
  62         case PHM_AsicBlock_UVD:
  63         case PHM_AsicBlock_UVD_HD:
  64         case PHM_AsicBlock_UVD_SD:
  65                 if (gating == PHM_ClockGateSetting_StaticOff)
  66                         ret = iceland_phm_powerdown_uvd(hwmgr);
  67                 else
  68                         ret = iceland_phm_powerup_uvd(hwmgr);
  69                 break;
  70         case PHM_AsicBlock_GFX:
  71         default:
  72                 break;
  73         }
  74
  75         return ret;
  76 }
  77
  78 int iceland_phm_disable_clock_power_gating(struct pp_hwmgr *hwmgr)
  79 {
  80         struct iceland_hwmgr *data = (struct iceland_hwmgr *)(hwmgr->backend);
  81
  82         data->uvd_power_gated = false;
  83         data->vce_power_gated = false;
  84
  85         iceland_phm_powerup_uvd(hwmgr);
  86         iceland_phm_powerup_vce(hwmgr);
  87
  88         return 0;
  89 }
  90
  91 int iceland_phm_powergate_uvd(struct pp_hwmgr *hwmgr, bool bgate)
  92 {
  93         if (bgate) {
  94                 iceland_update_uvd_dpm(hwmgr, true);
  95                 iceland_phm_powerdown_uvd(hwmgr);
  96         } else {
  97                 iceland_phm_powerup_uvd(hwmgr);
  98                 iceland_update_uvd_dpm(hwmgr, false);
  99         }
 100
 101         return 0;
 102 }
 103
 104 int iceland_phm_powergate_vce(struct pp_hwmgr *hwmgr, bool bgate)
 105 {
 106         if (bgate)
 107                 return iceland_phm_powerdown_vce(hwmgr);
 108         else
 109                 return iceland_phm_powerup_vce(hwmgr);
 110
 111         return 0;
 112 }
 113
 114 int iceland_phm_update_clock_gatings(struct pp_hwmgr *hwmgr,
 115                                         const uint32_t *msg_id)
 116 {
 117         /* iceland does not have MM hardware block */
 118         return 0;
 119 }