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drm/amd/powerplay: check prerequisite for VCN power gating

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VCN DPM is a necessary prerequisite for VCN power gating.

Signed-off-by: Evan Quan <[email protected]>
Reviewed-by: Kevin Wang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
This commit is contained in:
Evan Quan
2019-06-27 11:22:08 -05:00
committed by Alex Deucher
parent f631959653
commit b213646519
1 changed files with 10 additions and 6 deletions
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drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+10 -6
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@@ -574,15 +574,19 @@ static int navi10_dpm_set_uvd_enable(struct smu_context *smu, bool enable)
struct smu_power_gate *power_gate = &smu_power->power_gate;
if (enable && power_gate->uvd_gated) {
ret = smu_send_smc_msg_with_param(smu, SMU_MSG_PowerUpVcn, 1);
if (ret)
return ret;
if (smu_feature_is_enabled(smu, SMU_FEATURE_DPM_UVD_BIT)) {
ret = smu_send_smc_msg_with_param(smu, SMU_MSG_PowerUpVcn, 1);
if (ret)
return ret;
}
power_gate->uvd_gated = false;
} else {
if (!enable && !power_gate->uvd_gated) {
ret = smu_send_smc_msg(smu, SMU_MSG_PowerDownVcn);
if (ret)
return ret;
if (smu_feature_is_enabled(smu, SMU_FEATURE_DPM_UVD_BIT)) {
ret = smu_send_smc_msg(smu, SMU_MSG_PowerDownVcn);
if (ret)
return ret;
}
power_gate->uvd_gated = true;
}
}