On Tue, 17 Dec 2024, Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx> wrote:
> Make a separate function for setting fec_enable in crtc_state.
>
> v2: Rename helper to align with encoder->compute_config() callback
> and other minor fixes. (Jani)
>
> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
> Reviewed-by: Suraj Kandpal <suraj.kandpal@xxxxxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_dp.c | 34 ++++++++++++++++++-------
> 1 file changed, 25 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index dd2da9facaad..674297ac6315 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2350,6 +2350,30 @@ static int intel_edp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
> return 0;
> }
>
> +static void intel_dp_fec_compute_config(struct intel_dp *intel_dp,
> + const struct intel_connector *connector,
> + struct intel_crtc_state *crtc_state)
> +{
> + if (crtc_state->fec_enable)
> + return;
> +
> + /*
> + * Though eDP v1.5 supports FEC with DSC, unlike DP, it is optional.
> + * Since, FEC is a bandwidth overhead, continue to not enable it for
> + * eDP. Until, there is a good reason to do so.
> + */
> + if (intel_dp_is_edp(intel_dp))
> + return;
> +
> + if (!intel_dp_supports_fec(intel_dp, connector, crtc_state))
> + return;
> +
> + if (intel_dp_is_uhbr(crtc_state))
> + return;
> +
> + crtc_state->fec_enable = true;
> +}
> +
> int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
> struct intel_crtc_state *pipe_config,
> struct drm_connector_state *conn_state,
> @@ -2365,15 +2389,7 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
> int num_joined_pipes = intel_crtc_num_joined_pipes(pipe_config);
> int ret;
>
> - /*
> - * Though eDP v1.5 supports FEC with DSC, unlike DP, it is optional.
> - * Since, FEC is a bandwidth overhead, continue to not enable it for
> - * eDP. Until, there is a good reason to do so.
> - */
> - pipe_config->fec_enable = pipe_config->fec_enable ||
> - (!intel_dp_is_edp(intel_dp) &&
> - intel_dp_supports_fec(intel_dp, connector, pipe_config) &&
> - !intel_dp_is_uhbr(pipe_config));
> + intel_dp_fec_compute_config(intel_dp, connector, pipe_config);
>
> if (!intel_dp_dsc_supports_format(connector, pipe_config->output_format))
> return -EINVAL;
--
Jani Nikula, Intel
