[PATCH 14/14] drm/amdgpu: Use DC by default on CIK APUs

["Timur Kristóf" <timur.kristof@gmail.com>]

Now that DC supports external DP bridge encoders,
it has reached feature parity with the legacy non-DC display
driver on CIK APUs: Kaveri, Kabini, Mullins.

Use the DC display driver by default on SI dGPUs, unless it is
explicitly disabled using the amdgpu.dc=0 module parameter.

DC brings proper support for DP/HDMI audio, DP MST, VRR,
10-bit colors, some HDR features, atomic modesetting, etc.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 362ab2b34498..fc4656a23158 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4113,17 +4113,6 @@ bool amdgpu_device_asic_has_dc_support(struct pci_dev *pdev,
 	case CHIP_VERDE:
 	case CHIP_OLAND:
 		return amdgpu_dc != 0 && IS_ENABLED(CONFIG_DRM_AMD_DC_SI);
-	case CHIP_KAVERI:
-	case CHIP_KABINI:
-	case CHIP_MULLINS:
-		/*
-		 * We have systems in the wild with these ASICs that require
-		 * TRAVIS and NUTMEG support which is not supported with DC.
-		 *
-		 * Fallback to the non-DC driver here by default so as not to
-		 * cause regressions.
-		 */
-		return amdgpu_dc > 0;
 	default:
 		return amdgpu_dc != 0;
 #else
-- 
2.52.0