CMRR is a display feature that uses adaptive sync framework to vary Vtotal slightly to match the content rate exactly without frame drops. This feature is a variation of VRR where it varies Vtotal slightly (between additional 0 and 1 Vtotal scanlines) to match content rate exactly without frame drops using the adaptive sync framework. enable this feature by programing new registers for CMRR enable, CMRR_M, CMRR_N, vmin=vmax=flipline.The CMRR_M/CMRR_N ratio represents the fractional part in (actual refresh rate/target refresh rate) * origVTotal. --v6: - CMRR handling in co-existatnce of LRR and DRRS - Correct vtotal paramas accuracy and add 2 digit precision. --v7: - Rebased patches in-accordance to AS SDP merge. - Add neccessary gaurd to prevent crtc_state mismatch during intel_vrr_get_config. -v8: - Add support for AS SDP for CMRR. - update palce holder for CMRR register(Jani). - Make CMRR as subset of FAVT, as per comments in patch#3. Mitul Golani (7): drm/i915: Define and compute Transcoder CMRR registers drm/i915: Add Enable/Disable for CMRR based on VRR state drm/i915: Compute CMRR and calculate vtotal Add refresh rate divider to struct representing AS SDP drm/i915/display: Add support for pack and unpack drm/i915/display: Compute Adaptive sync SDP params drm/i915/display: Compute vrr vsync params drivers/gpu/drm/i915/display/intel_display.c | 61 ++++++- .../drm/i915/display/intel_display_device.h | 1 + .../drm/i915/display/intel_display_types.h | 6 + drivers/gpu/drm/i915/display/intel_dp.c | 20 ++- drivers/gpu/drm/i915/display/intel_vrr.c | 168 +++++++++++++++--- drivers/gpu/drm/i915/i915_reg.h | 10 ++ include/drm/display/drm_dp_helper.h | 1 + 7 files changed, 230 insertions(+), 37 deletions(-) -- 2.25.1
