From 652135940ee20e2aaa4c628d13b3fb2b53770cab Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Thu, 9 Sep 2021 15:52:03 +0300 Subject: [PATCH] drm/i915/dg2: use 128b/132b transcoder DDI mode MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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. v2: - Use HAS_DP20 abstraction for 128b/132b mode (Ville) - Use intel_dp_is_uhbr() helper Bspec: 50493 Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/279bfbd979e0256fae13a5231e07e2f4fb665c07.1631191763.git.jani.nikula@intel.com --- 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 91ee32ffba97..bba0ab99836b 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -506,7 +506,10 @@ 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 (intel_dp_is_uhbr(crtc_state)) + 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) { @@ -694,7 +697,12 @@ 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 (HAS_DP20(dev_priv)) + /* 128b/132b */ + ret = false; + else + /* FDI */ + ret = type == DRM_MODE_CONNECTOR_VGA; break; default: @@ -781,8 +789,9 @@ 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 || + (HAS_DP20(dev_priv) && + (tmp & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B)) mst_pipe_mask |= BIT(p); *pipe_mask |= BIT(p); @@ -3573,9 +3582,6 @@ 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); @@ -3604,6 +3610,13 @@ 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 (!HAS_DP20(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 =