From: Alex Deucher alexander.deucher@amd.com

- Add missing DFP6 connection state handling - crtc routing bits not used on DCE4+

Noticed by sylware on phoronix.

Signed-off-by: Alex Deucher alexander.deucher@amd.com --- drivers/gpu/drm/radeon/radeon_atombios.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index a9ce094..8577824 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -2981,6 +2981,20 @@ radeon_atombios_connected_scratch_regs(struct drm_connector *connector, bios_6_scratch &= ~ATOM_S6_ACC_REQ_DFP5; } } + if ((radeon_encoder->devices & ATOM_DEVICE_DFP6_SUPPORT) && + (radeon_connector->devices & ATOM_DEVICE_DFP6_SUPPORT)) { + if (connected) { + DRM_DEBUG_KMS("DFP6 connected\n"); + bios_0_scratch |= ATOM_S0_DFP6; + bios_3_scratch |= ATOM_S3_DFP6_ACTIVE; + bios_6_scratch |= ATOM_S6_ACC_REQ_DFP6; + } else { + DRM_DEBUG_KMS("DFP6 disconnected\n"); + bios_0_scratch &= ~ATOM_S0_DFP6; + bios_3_scratch &= ~ATOM_S3_DFP6_ACTIVE; + bios_6_scratch &= ~ATOM_S6_ACC_REQ_DFP6; + } + }

if (rdev->family >= CHIP_R600) { WREG32(R600_BIOS_0_SCRATCH, bios_0_scratch); @@ -3001,6 +3015,9 @@ radeon_atombios_encoder_crtc_scratch_regs(struct drm_encoder *encoder, int crtc) struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); uint32_t bios_3_scratch;

+ if (ASIC_IS_DCE4(rdev)) + return; + if (rdev->family >= CHIP_R600) bios_3_scratch = RREG32(R600_BIOS_3_SCRATCH); else