On Fri, Jan 31, 2025 at 02:50:00PM +0200, Jani Nikula wrote:
> Add the fractional DSC BPP force check to intel_dp_dsc_valid_bpp(), and
> use that in xelpd_dsc_compute_link_config(). This is another step closer
> towards unifying the platform specific functions.
>
> Signed-off-by: Jani Nikula <jani.nik...@intel.com>
Reviewed-by: Imre Deak <imre.d...@intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_dp.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index ac67f2d2f86a..c7de9efcd740 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2075,8 +2075,12 @@ static bool intel_dp_dsc_valid_bpp(struct intel_dp
> *intel_dp, int bpp_x16)
> struct intel_display *display = to_intel_display(intel_dp);
> int i;
>
> - if (DISPLAY_VER(display) >= 13)
> + if (DISPLAY_VER(display) >= 13) {
> + if (intel_dp->force_dsc_fractional_bpp_en &&
> !fxp_q4_to_frac(bpp_x16))
> + return false;
> +
> return true;
> + }
>
> if (fxp_q4_to_frac(bpp_x16))
> return false;
> @@ -2143,9 +2147,9 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp,
> int ret;
>
> for (bpp_x16 = max_bpp_x16; bpp_x16 >= min_bpp_x16; bpp_x16 -=
> bpp_step_x16) {
> - if (intel_dp->force_dsc_fractional_bpp_en &&
> - !fxp_q4_to_frac(bpp_x16))
> + if (!intel_dp_dsc_valid_bpp(intel_dp, bpp_x16))
> continue;
> +
> ret = dsc_compute_link_config(intel_dp,
> pipe_config,
> limits,
> --
> 2.39.5
>
