[AMD Official Use Only]
Reviewed-by: Evan Quan <evan.quan@xxxxxxx>
> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Alex
> Deucher
> Sent: Tuesday, December 28, 2021 1:12 AM
> To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Tareque Md .
> Hanif <tarequemd.hanif@xxxxxxxxx>
> Subject: [PATCH] drm/amdgpu: no DC support for headless chips
>
> Chips with no display hardware should return false for
> DC support.
>
> v2: drop Arcturus and Aldebaran
>
> Fixes: f7f12b25823c0d ("drm/amdgpu: default to true in
> amdgpu_device_asic_has_dc_support")
> Reported-by: Tareque Md.Hanif <tarequemd.hanif@xxxxxxxxx>
> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index 9dc86c5a1cad..694c3726e0f4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -3166,6 +3166,12 @@ static void
> amdgpu_device_detect_sriov_bios(struct amdgpu_device *adev)
> bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
> {
> switch (asic_type) {
> +#ifdef CONFIG_DRM_AMDGPU_SI
> + case CHIP_HAINAN:
> +#endif
> + case CHIP_TOPAZ:
> + /* chips with no display hardware */
> + return false;
> #if defined(CONFIG_DRM_AMD_DC)
> case CHIP_TAHITI:
> case CHIP_PITCAIRN:
> --
> 2.33.1
