128b/132b has a separate transcoder DDI mode, which also requires the MST transport select to be set. Note that we'll use DP MST also for single-stream 128b/132b.
Having the FDI and 128b/132b modes share the register mode value complicates things a bit. Bspec: 50493 Signed-off-by: Jani Nikula <[email protected]> --- drivers/gpu/drm/i915/display/intel_ddi.c | 27 ++++++++++++++++++------ 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 8b8f5d679b72..1ee817348bf5 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -505,7 +505,10 @@ intel_ddi_transcoder_func_reg_val_get(struct intel_encoder *encoder, temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B; temp |= (crtc_state->fdi_lanes - 1) << 1; } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) { - temp |= TRANS_DDI_MODE_SELECT_DP_MST; + if (crtc_state->port_clock > 1000000) + temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B; + else + temp |= TRANS_DDI_MODE_SELECT_DP_MST; temp |= DDI_PORT_WIDTH(crtc_state->lane_count); if (DISPLAY_VER(dev_priv) >= 12) { @@ -693,7 +696,12 @@ bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector) break; case TRANS_DDI_MODE_SELECT_FDI_OR_128B132B: - ret = type == DRM_MODE_CONNECTOR_VGA; + if (IS_DG2(dev_priv)) + /* 128b/132b */ + ret = false; + else + /* FDI */ + ret = type == DRM_MODE_CONNECTOR_VGA; break; default: @@ -780,8 +788,9 @@ static void intel_ddi_get_encoder_pipes(struct intel_encoder *encoder, if ((tmp & port_mask) != ddi_select) continue; - if ((tmp & TRANS_DDI_MODE_SELECT_MASK) == - TRANS_DDI_MODE_SELECT_DP_MST) + if ((tmp & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_DP_MST || + (IS_DG2(dev_priv) && + (tmp & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B)) mst_pipe_mask |= BIT(p); *pipe_mask |= BIT(p); @@ -3572,9 +3581,6 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder, pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI); pipe_config->lane_count = 4; break; - case TRANS_DDI_MODE_SELECT_FDI_OR_128B132B: - pipe_config->output_types |= BIT(INTEL_OUTPUT_ANALOG); - break; case TRANS_DDI_MODE_SELECT_DP_SST: if (encoder->type == INTEL_OUTPUT_EDP) pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP); @@ -3603,6 +3609,13 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder, pipe_config->infoframes.enable |= intel_hdmi_infoframes_enabled(encoder, pipe_config); break; + case TRANS_DDI_MODE_SELECT_FDI_OR_128B132B: + if (!IS_DG2(dev_priv)) { + /* FDI */ + pipe_config->output_types |= BIT(INTEL_OUTPUT_ANALOG); + break; + } + fallthrough; /* 128b/132b */ case TRANS_DDI_MODE_SELECT_DP_MST: pipe_config->output_types |= BIT(INTEL_OUTPUT_DP_MST); pipe_config->lane_count = -- 2.20.1
