amdgpu/pm: Prevent force of DCEFCLK on NAVI10 and SIENNA_CICHLID

[ Upstream commit b117b39 ]

Writing to dcefclk causes the gpu to become unresponsive, and requires a reboot.
Patch ignores a .force_clk_levels(SMU_DCEFCLK) call and issues an
info message.

Signed-off-by: Darren Powell <darren.powell@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Darren Powell

drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c

@@ -1110,7 +1110,6 @@ static int navi10_force_clk_levels(struct smu_context *smu,
 	case SMU_SOCCLK:
 	case SMU_MCLK:
 	case SMU_UCLK:
-	case SMU_DCEFCLK:
 	case SMU_FCLK:
 		/* There is only 2 levels for fine grained DPM */
 		if (navi10_is_support_fine_grained_dpm(smu, clk_type)) {
@@ -1130,6 +1129,10 @@ static int navi10_force_clk_levels(struct smu_context *smu,
 		if (ret)
 			return size;
 		break;
+	case SMU_DCEFCLK:
+		dev_info(smu->adev->dev,"Setting DCEFCLK min/max dpm level is not supported!\n");
+		break;
+
 	default:
 		break;
 	}

drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c

@@ -1018,7 +1018,6 @@ static int sienna_cichlid_force_clk_levels(struct smu_context *smu,
 	case SMU_SOCCLK:
 	case SMU_MCLK:
 	case SMU_UCLK:
-	case SMU_DCEFCLK:
 	case SMU_FCLK:
 		/* There is only 2 levels for fine grained DPM */
 		if (sienna_cichlid_is_support_fine_grained_dpm(smu, clk_type)) {
@@ -1038,6 +1037,9 @@ static int sienna_cichlid_force_clk_levels(struct smu_context *smu,
 		if (ret)
 			goto forec_level_out;
 		break;
+	case SMU_DCEFCLK:
+		dev_info(smu->adev->dev,"Setting DCEFCLK min/max dpm level is not supported!\n");
+		break;
 	default:
 		break;
 	}