AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-01-19 09:16:06 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

drm/amd/amdgpu: add mutex locking for both DPM and PP based powergating for UVD/VCE

Browse Source 
This adds a mutex lock for both DPM/PP around the changes in
power gating state so that userspace can poll registers without
a race condition on power state.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tom St Denis 2016-07-28 09:40:07 -04:00 committed by Alex Deucher
parent 70bb246154
commit e95a14a909
1 changed files with 25 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
View File

@ -1106,54 +1106,46 @@ static void amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev)
void amdgpu_dpm_enable_uvd(struct amdgpu_device *adev, bool enable)
{
if (adev->pp_enabled)
if (adev->pp_enabled || adev->pm.funcs->powergate_uvd) {
/* enable/disable UVD */
mutex_lock(&adev->pm.mutex);
amdgpu_dpm_powergate_uvd(adev, !enable);
else {
if (adev->pm.funcs->powergate_uvd) {
mutex_unlock(&adev->pm.mutex);
} else {
if (enable) {
mutex_lock(&adev->pm.mutex);
/* enable/disable UVD */
amdgpu_dpm_powergate_uvd(adev, !enable);
adev->pm.dpm.uvd_active = true;
adev->pm.dpm.state = POWER_STATE_TYPE_INTERNAL_UVD;
mutex_unlock(&adev->pm.mutex);
} else {
if (enable) {
mutex_lock(&adev->pm.mutex);
adev->pm.dpm.uvd_active = true;
adev->pm.dpm.state = POWER_STATE_TYPE_INTERNAL_UVD;
mutex_unlock(&adev->pm.mutex);
} else {
mutex_lock(&adev->pm.mutex);
adev->pm.dpm.uvd_active = false;
mutex_unlock(&adev->pm.mutex);
}
amdgpu_pm_compute_clocks(adev);
mutex_lock(&adev->pm.mutex);
adev->pm.dpm.uvd_active = false;
mutex_unlock(&adev->pm.mutex);
}
amdgpu_pm_compute_clocks(adev);
}
}
void amdgpu_dpm_enable_vce(struct amdgpu_device *adev, bool enable)
{
if (adev->pp_enabled)
if (adev->pp_enabled || adev->pm.funcs->powergate_vce) {
/* enable/disable VCE */
mutex_lock(&adev->pm.mutex);
amdgpu_dpm_powergate_vce(adev, !enable);
else {
if (adev->pm.funcs->powergate_vce) {
mutex_unlock(&adev->pm.mutex);
} else {
if (enable) {
mutex_lock(&adev->pm.mutex);
amdgpu_dpm_powergate_vce(adev, !enable);
adev->pm.dpm.vce_active = true;
/* XXX select vce level based on ring/task */
adev->pm.dpm.vce_level = AMDGPU_VCE_LEVEL_AC_ALL;
mutex_unlock(&adev->pm.mutex);
} else {
if (enable) {
mutex_lock(&adev->pm.mutex);
adev->pm.dpm.vce_active = true;
/* XXX select vce level based on ring/task */
adev->pm.dpm.vce_level = AMDGPU_VCE_LEVEL_AC_ALL;
mutex_unlock(&adev->pm.mutex);
} else {
mutex_lock(&adev->pm.mutex);
adev->pm.dpm.vce_active = false;
mutex_unlock(&adev->pm.mutex);
}
amdgpu_pm_compute_clocks(adev);
mutex_lock(&adev->pm.mutex);
adev->pm.dpm.vce_active = false;
mutex_unlock(&adev->pm.mutex);
}
amdgpu_pm_compute_clocks(adev);
}
}