[Intel-gfx] [RFC 0/3] Implement CMRR Support
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. Signed-off-by: Mitul Golani Mitul Golani (3): 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 .../drm/i915/display/intel_crtc_state_dump.c | 4 +- drivers/gpu/drm/i915/display/intel_display.c | 54 +++- .../drm/i915/display/intel_display_device.h | 1 + .../drm/i915/display/intel_display_types.h| 6 + drivers/gpu/drm/i915/display/intel_vrr.c | 126 -- drivers/gpu/drm/i915/i915_reg.h | 10 ++ 6 files changed, 181 insertions(+), 20 deletions(-) -- 2.25.1
[Intel-gfx] [RFC 0/3] Implement CMRR Support
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. Signed-off-by: Mitul Golani Mitul Golani (3): 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 .../drm/i915/display/intel_crtc_state_dump.c | 4 +- drivers/gpu/drm/i915/display/intel_display.c | 48 +- .../drm/i915/display/intel_display_device.h | 1 + .../drm/i915/display/intel_display_types.h| 6 + drivers/gpu/drm/i915/display/intel_vrr.c | 141 +++--- drivers/gpu/drm/i915/i915_reg.h | 14 ++ 6 files changed, 191 insertions(+), 23 deletions(-) -- 2.25.1
