kernel/drivers/gpu/drm/amd/amdgpu/fiji_dpm.c

   1 /*
   2  * Copyright 2014 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 <linux/firmware.h>
  25 #include "drmP.h"
  26 #include "amdgpu.h"
  27 #include "fiji_smumgr.h"
  28
  29 MODULE_FIRMWARE("amdgpu/fiji_smc.bin");
  30
  31 static void fiji_dpm_set_funcs(struct amdgpu_device *adev);
  32
  33 static int fiji_dpm_early_init(void *handle)
  34 {
  35         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
  36
  37         fiji_dpm_set_funcs(adev);
  38
  39         return 0;
  40 }
  41
  42 static int fiji_dpm_init_microcode(struct amdgpu_device *adev)
  43 {
  44         char fw_name[30] = "amdgpu/fiji_smc.bin";
  45         int err;
  46
  47         err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
  48         if (err)
  49                 goto out;
  50         err = amdgpu_ucode_validate(adev->pm.fw);
  51
  52 out:
  53         if (err) {
  54                 DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
  55                 release_firmware(adev->pm.fw);
  56                 adev->pm.fw = NULL;
  57         }
  58         return err;
  59 }
  60
  61 static int fiji_dpm_sw_init(void *handle)
  62 {
  63         int ret;
  64         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
  65
  66         ret = fiji_dpm_init_microcode(adev);
  67         if (ret)
  68                 return ret;
  69
  70         return 0;
  71 }
  72
  73 static int fiji_dpm_sw_fini(void *handle)
  74 {
  75         return 0;
  76 }
  77
  78 static int fiji_dpm_hw_init(void *handle)
  79 {
  80         int ret;
  81         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
  82
  83         mutex_lock(&adev->pm.mutex);
  84
  85         ret = fiji_smu_init(adev);
  86         if (ret) {
  87                 DRM_ERROR("SMU initialization failed\n");
  88                 goto fail;
  89         }
  90
  91         ret = fiji_smu_start(adev);
  92         if (ret) {
  93                 DRM_ERROR("SMU start failed\n");
  94                 goto fail;
  95         }
  96
  97         mutex_unlock(&adev->pm.mutex);
  98         return 0;
  99
 100 fail:
 101         adev->firmware.smu_load = false;
 102         mutex_unlock(&adev->pm.mutex);
 103         return -EINVAL;
 104 }
 105
 106 static int fiji_dpm_hw_fini(void *handle)
 107 {
 108         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 109         mutex_lock(&adev->pm.mutex);
 110         fiji_smu_fini(adev);
 111         mutex_unlock(&adev->pm.mutex);
 112         return 0;
 113 }
 114
 115 static int fiji_dpm_suspend(void *handle)
 116 {
 117         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 118
 119         fiji_dpm_hw_fini(adev);
 120
 121         return 0;
 122 }
 123
 124 static int fiji_dpm_resume(void *handle)
 125 {
 126         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 127
 128         fiji_dpm_hw_init(adev);
 129
 130         return 0;
 131 }
 132
 133 static int fiji_dpm_set_clockgating_state(void *handle,
 134                         enum amd_clockgating_state state)
 135 {
 136         return 0;
 137 }
 138
 139 static int fiji_dpm_set_powergating_state(void *handle,
 140                         enum amd_powergating_state state)
 141 {
 142         return 0;
 143 }
 144
 145 const struct amd_ip_funcs fiji_dpm_ip_funcs = {
 146         .early_init = fiji_dpm_early_init,
 147         .late_init = NULL,
 148         .sw_init = fiji_dpm_sw_init,
 149         .sw_fini = fiji_dpm_sw_fini,
 150         .hw_init = fiji_dpm_hw_init,
 151         .hw_fini = fiji_dpm_hw_fini,
 152         .suspend = fiji_dpm_suspend,
 153         .resume = fiji_dpm_resume,
 154         .is_idle = NULL,
 155         .wait_for_idle = NULL,
 156         .soft_reset = NULL,
 157         .print_status = NULL,
 158         .set_clockgating_state = fiji_dpm_set_clockgating_state,
 159         .set_powergating_state = fiji_dpm_set_powergating_state,
 160 };
 161
 162 static const struct amdgpu_dpm_funcs fiji_dpm_funcs = {
 163         .get_temperature = NULL,
 164         .pre_set_power_state = NULL,
 165         .set_power_state = NULL,
 166         .post_set_power_state = NULL,
 167         .display_configuration_changed = NULL,
 168         .get_sclk = NULL,
 169         .get_mclk = NULL,
 170         .print_power_state = NULL,
 171         .debugfs_print_current_performance_level = NULL,
 172         .force_performance_level = NULL,
 173         .vblank_too_short = NULL,
 174         .powergate_uvd = NULL,
 175 };
 176
 177 static void fiji_dpm_set_funcs(struct amdgpu_device *adev)
 178 {
 179         if (NULL == adev->pm.funcs)
 180                 adev->pm.funcs = &fiji_dpm_funcs;
 181 }