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: 75aaa57ac5dfb8 ("drm/amdgpu: default to true in amdgpu_device_asic_has_dc_support")
Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reported-by: Tareque Md.Hanif <tarequemd.hanif@yahoo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 9dc86c5a1cada50e5909eaa84e6aa00eda3d65b7..694c3726e0f4d01148078b155ae318214f0d7e82 100644 (file)
--- 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: