Tests have shown that on single CRTC GPUs like the RN50 - which is used on many servers - the CRTC is controlled thru the RADEON_CRTC_EXT_CNTL for both the primary and the TV DAC. This set of patches cleans up the code in radeon_legacy_tv_dac_detect(), fixes the handling of CRTC control for the TV DAC on those GPUs and adds code to handle R200 GPUs.
This basically separates the different items in: DRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.
Egbert Eich (3): DRM/Radeon: Clean up code in TV DAC load detection. DRM/Radeon: Add Handling for R200 to TV DAC Load Detection. DRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.
drivers/gpu/drm/radeon/radeon_legacy_encoders.c | 83 ++++++++++++++++------- 1 files changed, 57 insertions(+), 26 deletions(-)