From 6aba5b6cf098ba305fc31b23cc14114a16768d22 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 4 Oct 2013 15:08:10 +0300 Subject: [PATCH] drm/i915/dp: get rid of intel_dp->link_configuration MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit It's not really needed, rather just adds another place to hold intermediate values that could go wrong, and it's not clear that the training pattern set or training lane set should be written at this point at all. Signed-off-by: Jani Nikula Reviewed-by: Ville Syrjälä Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/intel_ddi.c | 5 +---- drivers/gpu/drm/i915/intel_dp.c | 34 +++++++++++--------------------- drivers/gpu/drm/i915/intel_drv.h | 3 --- 3 files changed, 13 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 04f68804834d..9792ea8df13e 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -296,9 +296,6 @@ static void intel_ddi_mode_set(struct intel_encoder *encoder) DRM_DEBUG_DRIVER("DP audio: write eld information\n"); intel_write_eld(&encoder->base, adjusted_mode); } - - intel_dp_init_link_config(intel_dp); - } else if (type == INTEL_OUTPUT_HDMI) { struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base); @@ -1202,7 +1199,7 @@ void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder) val = DP_TP_CTL_ENABLE | DP_TP_CTL_MODE_SST | DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE; - if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) + if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE; I915_WRITE(DP_TP_CTL(port), val); POSTING_READ(DP_TP_CTL(port)); diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 3575b86ca799..5f0c783027c9 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -876,21 +876,6 @@ found: return true; } -void intel_dp_init_link_config(struct intel_dp *intel_dp) -{ - memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE); - intel_dp->link_configuration[0] = intel_dp->link_bw; - intel_dp->link_configuration[1] = intel_dp->lane_count; - intel_dp->link_configuration[8] = DP_SET_ANSI_8B10B; - /* - * Check for DPCD version > 1.1 and enhanced framing support - */ - if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && - (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) { - intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; - } -} - static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) { struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); @@ -963,8 +948,6 @@ static void intel_dp_mode_set(struct intel_encoder *encoder) intel_write_eld(&encoder->base, adjusted_mode); } - intel_dp_init_link_config(intel_dp); - /* Split out the IBX/CPU vs CPT settings */ if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { @@ -974,7 +957,7 @@ static void intel_dp_mode_set(struct intel_encoder *encoder) intel_dp->DP |= DP_SYNC_VS_HIGH; intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; - if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) + if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) intel_dp->DP |= DP_ENHANCED_FRAMING; intel_dp->DP |= crtc->pipe << 29; @@ -988,7 +971,7 @@ static void intel_dp_mode_set(struct intel_encoder *encoder) intel_dp->DP |= DP_SYNC_VS_HIGH; intel_dp->DP |= DP_LINK_TRAIN_OFF; - if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) + if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) intel_dp->DP |= DP_ENHANCED_FRAMING; if (crtc->pipe == 1) @@ -2444,14 +2427,21 @@ intel_dp_start_link_train(struct intel_dp *intel_dp) uint8_t voltage; int voltage_tries, loop_tries; uint32_t DP = intel_dp->DP; + uint8_t link_config[2]; if (HAS_DDI(dev)) intel_ddi_prepare_link_retrain(encoder); /* Write the link configuration data */ - intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET, - intel_dp->link_configuration, - DP_LINK_CONFIGURATION_SIZE); + link_config[0] = intel_dp->link_bw; + link_config[1] = intel_dp->lane_count; + if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) + link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; + intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET, link_config, 2); + + link_config[0] = 0; + link_config[1] = DP_SET_ANSI_8B10B; + intel_dp_aux_native_write(intel_dp, DP_DOWNSPREAD_CTRL, link_config, 2); DP |= DP_PORT_EN; diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 4b75328462ed..287bbef72da9 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -437,13 +437,11 @@ struct intel_hdmi { }; #define DP_MAX_DOWNSTREAM_PORTS 0x10 -#define DP_LINK_CONFIGURATION_SIZE 9 struct intel_dp { uint32_t output_reg; uint32_t aux_ch_ctl_reg; uint32_t DP; - uint8_t link_configuration[DP_LINK_CONFIGURATION_SIZE]; bool has_audio; enum hdmi_force_audio force_audio; uint32_t color_range; @@ -548,7 +546,6 @@ extern void intel_dp_init(struct drm_device *dev, int output_reg, enum port port); extern bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port, struct intel_connector *intel_connector); -extern void intel_dp_init_link_config(struct intel_dp *intel_dp); extern void intel_dp_start_link_train(struct intel_dp *intel_dp); extern void intel_dp_complete_link_train(struct intel_dp *intel_dp); extern void intel_dp_stop_link_train(struct intel_dp *intel_dp); -- 2.39.5