From: Timur Kristóf Date: Sun, 9 Nov 2025 18:26:40 +0000 (+0100) Subject: drm/amdgpu: Use DC by default on SI dGPUs X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2da2e952a785a49c5b3cc624bf00ab6c2d7607a5;p=thirdparty%2Fkernel%2Flinux.git drm/amdgpu: Use DC by default on SI dGPUs Now that DC supports analog connectors, it has reached feature parity with the legacy non-DC display driver on SI dGPUs. 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, 10-bit colors, some HDR features, atomic modesetting, etc. Also clarify the comment about what is missing to have full DC support for CIK APUs. Signed-off-by: Timur Kristóf Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 86255c13fbb79..bfbf874a10008 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -4249,24 +4249,13 @@ bool amdgpu_device_asic_has_dc_support(struct pci_dev *pdev, case CHIP_PITCAIRN: case CHIP_VERDE: case CHIP_OLAND: - /* - * We have systems in the wild with these ASICs that require - * LVDS and VGA support which is not supported with DC. - * - * Fallback to the non-DC driver here by default so as not to - * cause regressions. - */ -#if defined(CONFIG_DRM_AMD_DC_SI) - return amdgpu_dc > 0; -#else - return false; -#endif + 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 - * VGA support which is not supported with DC. + * 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.