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authorMark Brown <broonie@kernel.org>2018-07-23 18:02:28 +0100
committerMark Brown <broonie@kernel.org>2018-07-23 18:02:28 +0100
commit0afdd676f6e575478634d961286094169adbc50d (patch)
treedc04a98e56287b9375626457c6cdd56062e5f899 /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
parente594a0636b0213d058aec2406e13f276b70791ed (diff)
parenteef5ba1aa148ca5e6deb1e0aa1de797fa4e12cb7 (diff)
Merge branch 'i2c/smbus_xfer_unlock-immutable' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into regmap-4.19 for sccb dependency
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_device.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 3317d1536f4f..6e5284e6c028 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2158,10 +2158,18 @@ bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
switch (asic_type) {
#if defined(CONFIG_DRM_AMD_DC)
case CHIP_BONAIRE:
- case CHIP_HAWAII:
case CHIP_KAVERI:
case CHIP_KABINI:
case CHIP_MULLINS:
+ /*
+ * 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.
+ */
+ return amdgpu_dc > 0;
+ case CHIP_HAWAII:
case CHIP_CARRIZO:
case CHIP_STONEY:
case CHIP_POLARIS10: