drm/amd/display: Enable VM support only on APUs newer than CZ

VM support is only available for CZ and newer APUs. Trying to
enable it for dGPU will blow up in DC.

v2: Don't enable gpu_vm_support for Raven yet since it leads to
    a black screen. Need to debug this further before enabling.

Change-Id: Ibe467c36affe2e7a7ee740c8d4f73027ca807178
Signed-off-by: Harry Wentland <[email protected]>
Suggested-by: Alex Deucher <[email protected]>
CC: Christian Koenig <[email protected]>
Reviewed-by: Andrey Grodzovsky <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 4897beda82bce5426ebacf567dad9a2b34038a16..aaa6eb665863c6b0078d95bb747c07139ade1ef6 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -451,6 +451,14 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
        else
                init_data.log_mask = DC_MIN_LOG_MASK;
 
+       /*
+        * TODO debug why this doesn't work on Raven
+        */
+       if (adev->flags & AMD_IS_APU &&
+           adev->asic_type >= CHIP_CARRIZO &&
+           adev->asic_type < CHIP_RAVEN)
+               init_data.flags.gpu_vm_support = true;
+
        /* Display Core create. */
        adev->dm.dc = dc_create(&init_data);