drivers/gpu/drm/amd/powerplay/eventmgr/psm.c

   1 /*
   2  * Copyright 2015 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 #include "psm.h"
  24
  25 int psm_get_ui_state(struct pp_eventmgr *eventmgr, enum PP_StateUILabel ui_label, unsigned long *state_id)
  26 {
  27         struct pp_power_state *state;
  28         int table_entries;
  29         struct pp_hwmgr *hwmgr = eventmgr->hwmgr;
  30         int i;
  31
  32         table_entries = hwmgr->num_ps;
  33         state = hwmgr->ps;
  34
  35         for (i = 0; i < table_entries; i++) {
  36                 if (state->classification.ui_label & ui_label) {
  37                         *state_id = state->id;
  38                         return 0;
  39                 }
  40                 state = (struct pp_power_state *)((unsigned long)state + hwmgr->ps_size);
  41         }
  42         return -1;
  43 }
  44
  45 int psm_get_state_by_classification(struct pp_eventmgr *eventmgr, enum PP_StateClassificationFlag flag, unsigned long *state_id)
  46 {
  47         struct pp_power_state *state;
  48         int table_entries;
  49         struct pp_hwmgr *hwmgr = eventmgr->hwmgr;
  50         int i;
  51
  52         table_entries = hwmgr->num_ps;
  53         state = hwmgr->ps;
  54
  55         for (i = 0; i < table_entries; i++) {
  56                 if (state->classification.flags & flag) {
  57                         *state_id = state->id;
  58                         return 0;
  59                 }
  60                 state = (struct pp_power_state *)((unsigned long)state + hwmgr->ps_size);
  61         }
  62         return -1;
  63 }
  64
  65 int psm_set_states(struct pp_eventmgr *eventmgr, unsigned long *state_id)
  66 {
  67         struct pp_power_state *state;
  68         int table_entries;
  69         struct pp_hwmgr *hwmgr = eventmgr->hwmgr;
  70         int i;
  71
  72         table_entries = hwmgr->num_ps;
  73
  74         state = hwmgr->ps;
  75
  76         for (i = 0; i < table_entries; i++) {
  77                 if (state->id == *state_id) {
  78                         memcpy(hwmgr->request_ps, state, hwmgr->ps_size);
  79                         return 0;
  80                 }
  81                 state = (struct pp_power_state *)((unsigned long)state + hwmgr->ps_size);
  82         }
  83         return -1;
  84 }
  85
  86 int psm_adjust_power_state_dynamic(struct pp_eventmgr *eventmgr, bool skip)
  87 {
  88
  89         struct pp_power_state *pcurrent;
  90         struct pp_power_state *requested;
  91         struct pp_hwmgr *hwmgr;
  92         bool equal;
  93
  94         if (skip)
  95                 return 0;
  96
  97         hwmgr = eventmgr->hwmgr;
  98         pcurrent = hwmgr->current_ps;
  99         requested = hwmgr->request_ps;
 100
 101         if (requested == NULL)
 102                 return 0;
 103
 104         phm_apply_state_adjust_rules(hwmgr, requested, pcurrent);
 105
 106         if (pcurrent == NULL || (0 != phm_check_states_equal(hwmgr, &pcurrent->hardware, &requested->hardware, &equal)))
 107                 equal = false;
 108
 109         if (!equal || phm_check_smc_update_required_for_display_configuration(hwmgr)) {
 110                 phm_set_power_state(hwmgr, &pcurrent->hardware, &requested->hardware);
 111                 memcpy(hwmgr->current_ps, hwmgr->request_ps, hwmgr->ps_size);
 112         }
 113         return 0;
 114 }
 115
 116 int psm_adjust_power_state_static(struct pp_eventmgr *eventmgr, bool skip)
 117 {
 118         return 0;
 119 }