From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> 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.syrjala@xxxxxxxxxxxxxxx> --- 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) 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, -- 2.39.2