On Tue, 2023-05-02 at 17:39 +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrj...@linux.intel.com>
>
> ICL doesn't support FEC with a x1 DP link. Make sure
> we don't try to enable FEC in such cases.
>
> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_dp.c | 23 ++++++++++++-----------
> 1 file changed, 12 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index b27b4fb71ed7..9ac199444155 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -1218,7 +1218,8 @@ static bool intel_dp_source_supports_fec(struct
> intel_dp *intel_dp,
> if (DISPLAY_VER(dev_priv) >= 12)
> return true;
>
> - if (DISPLAY_VER(dev_priv) == 11 && encoder->port != PORT_A)
> + if (DISPLAY_VER(dev_priv) == 11 &&
> + encoder->port != PORT_A && pipe_config->lane_count != 1)
> return true;
>
> return false;
> @@ -1234,7 +1235,7 @@ static bool intel_dp_supports_fec(struct intel_dp
> *intel_dp,
> static bool intel_dp_supports_dsc(struct intel_dp *intel_dp,
> const struct intel_crtc_state *crtc_state)
> {
> - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP) &&
> !crtc_state->fec_enable)
> + if (!intel_dp_is_edp(intel_dp) && !crtc_state->fec_enable)
I'm probably missing something, but this change...
> return false;
>
> return intel_dsc_source_support(crtc_state) &&
> @@ -1580,15 +1581,6 @@ int intel_dp_dsc_compute_config(struct intel_dp
> *intel_dp,
> int pipe_bpp;
> int ret;
>
> - pipe_config->fec_enable = !intel_dp_is_edp(intel_dp) &&
> - intel_dp_supports_fec(intel_dp, pipe_config);
> -
> - if (!intel_dp_supports_dsc(intel_dp, pipe_config))
> - return -EINVAL;
> -
> - if (!intel_dp_dsc_supports_format(intel_dp, pipe_config->output_format))
> - return -EINVAL;
> -
> if (compute_pipe_bpp)
> pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp,
> conn_state->max_requested_bpc);
> else
> @@ -1615,6 +1607,15 @@ int intel_dp_dsc_compute_config(struct intel_dp
> *intel_dp,
> pipe_config->port_clock = limits->max_rate;
> pipe_config->lane_count = limits->max_lane_count;
>
> + pipe_config->fec_enable = !intel_dp_is_edp(intel_dp) &&
> + intel_dp_supports_fec(intel_dp, pipe_config);
> +
> + if (!intel_dp_supports_dsc(intel_dp, pipe_config))
> + return -EINVAL;
> +
> + if (!intel_dp_dsc_supports_format(intel_dp, pipe_config->output_format))
> + return -EINVAL;
> +
> if (intel_dp_is_edp(intel_dp)) {
> pipe_config->dsc.compressed_bpp =
> min_t(u16,
> drm_edp_dsc_sink_output_bpp(intel_dp->dsc_dpcd) >> 4,
...and this code move are not explained in the commit message? How are
they related?
--
Cheers,
Luca.
