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drm/amdgpu/swSMU: handle manual AC/DC notifications 

For boards that do not support automatic AC/DC transitions
in firmware, manually tell the firmware when the status
changes.

Bug: https://gitlab.freedesktop.org/drm/amd/issues/1043
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2020-03-20 13:03:12 -04:00
parent f5cdd2bdd9
commit 9644bf5f4a
3 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
View File

@ -92,6 +92,9 @@ void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev)
if (adev->powerplay.pp_funcs->enable_bapm)
amdgpu_dpm_enable_bapm(adev, adev->pm.ac_power);
mutex_unlock(&adev->pm.mutex);
if (is_support_sw_smu(adev))
smu_set_ac_dc(&adev->smu);
}
}

23
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
View File

@ -2087,6 +2087,29 @@ int smu_set_watermarks_for_clock_ranges(struct smu_context *smu,
return 0;
}
int smu_set_ac_dc(struct smu_context *smu)
{
int ret = 0;
/* controlled by firmware */
if (smu->dc_controlled_by_gpio)
return 0;
mutex_lock(&smu->mutex);
if (smu->ppt_funcs->set_power_source) {
if (smu->adev->pm.ac_power)
ret = smu_set_power_source(smu, SMU_POWER_SOURCE_AC);
else
ret = smu_set_power_source(smu, SMU_POWER_SOURCE_DC);
if (ret)
pr_err("Failed to switch to %s mode!\n",
smu->adev->pm.ac_power ? "AC" : "DC");
}
mutex_unlock(&smu->mutex);
return ret;
}
const struct amd_ip_funcs smu_ip_funcs = {
.name = "smu",
.early_init = smu_early_init,

1
drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
View File

@ -720,6 +720,7 @@ int smu_get_dpm_level_range(struct smu_context *smu, enum smu_clk_type clk_type,
enum amd_dpm_forced_level smu_get_performance_level(struct smu_context *smu);
int smu_force_performance_level(struct smu_context *smu, enum amd_dpm_forced_level level);
int smu_set_display_count(struct smu_context *smu, uint32_t count);
int smu_set_ac_dc(struct smu_context *smu);
bool smu_clk_dpm_is_enabled(struct smu_context *smu, enum smu_clk_type clk_type);
const char *smu_get_message_name(struct smu_context *smu, enum smu_message_type type);
const char *smu_get_feature_name(struct smu_context *smu, enum smu_feature_mask feature);