drm/amd/powerplay: check prerequisite for VCN power gating (b2136465) · Commits · 戴 / test

VCN DPM is a necessary prerequisite for VCN power gating. Signed-off-by:

drivers/gpu/drm/amd/powerplay/navi10_ppt.c

+10 −6

Original line number	Diff line number	Diff line
		@@ -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) {
		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) {
		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;
		}
		}