drm/amdgpu/smu: Handle S0ix for vangogh

Fix the flows for S0ix.  There is no need to stop
rlc or reintialize PMFW in S0ix.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4659
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reported-by: Antheas Kapenekakis <lkml@antheas.dev>
Tested-by: Antheas Kapenekakis <lkml@antheas.dev>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit fd39b5a5830d8f2553e0c09d4d50bdff28b10080)
Cc: <stable@vger.kernel.org> # c81f5ce: drm/amdgpu: Drop PMFW RLC notifier from amdgpu_device_suspend()
Cc: <stable@vger.kernel.org>

Author: alexdeucher

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -2040,6 +2040,12 @@ static int smu_disable_dpms(struct smu_context *smu)
 	    smu->is_apu && (amdgpu_in_reset(adev) || adev->in_s0ix))
 		return 0;
 
+	/* vangogh s0ix */
+	if ((amdgpu_ip_version(adev, MP1_HWIP, 0) == IP_VERSION(11, 5, 0) ||
+	     amdgpu_ip_version(adev, MP1_HWIP, 0) == IP_VERSION(11, 5, 2)) &&
+	    adev->in_s0ix)
+		return 0;
+
 	/*
 	 * For gpu reset, runpm and hibernation through BACO,
 	 * BACO feature has to be kept enabled.

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

@@ -2217,6 +2217,9 @@ static int vangogh_post_smu_init(struct smu_context *smu)
 	uint32_t total_cu = adev->gfx.config.max_cu_per_sh *
 		adev->gfx.config.max_sh_per_se * adev->gfx.config.max_shader_engines;
 
+	if (adev->in_s0ix)
+		return 0;
+
 	/* allow message will be sent after enable message on Vangogh*/
 	if (smu_cmn_feature_is_enabled(smu, SMU_FEATURE_DPM_GFXCLK_BIT) &&
 			(adev->pg_flags & AMD_PG_SUPPORT_GFX_PG)) {