[Intel-gfx] [PATCH 0/3] Implement CMRR Support

[Jani Nikula]

On Wed, 22 Nov 2023, Mitul Golani <mitulkumar.ajitkumar.golani at intel.com> wrote:
> 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.

Please check and use the -v<N> option of git-send-email.

BR,
Jani.


>
> 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.
>
> 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      | 129 ++++++++++++++++--
>  drivers/gpu/drm/i915/i915_reg.h               |  10 ++
>  6 files changed, 184 insertions(+), 20 deletions(-)

-- 
Jani Nikula, Intel