From: Ville Syrjälä <ville.syrj...@linux.intel.com> We only need the link_bw/rate_select parameters when starting link training, and they should be computed based on the currently active config, so throw them out from intel_dp and just compute on demand.
Toss in an extra debug print to see rate_select in addition to link_bw, as the latter may be 0 for eDP 1.4. Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com> --- drivers/gpu/drm/i915/intel_dp.c | 39 ++++++++++++++++++++++++------------- drivers/gpu/drm/i915/intel_dp_mst.c | 13 ++----------- drivers/gpu/drm/i915/intel_drv.h | 2 -- 3 files changed, 27 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 46b734b..e88cec2 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1342,6 +1342,19 @@ int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) return rate_to_index(rate, intel_dp->sink_rates); } +static void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock, + uint8_t *link_bw, uint8_t *rate_select) +{ + if (intel_dp->num_sink_rates) { + *link_bw = 0; + *rate_select = + intel_dp_rate_select(intel_dp, port_clock); + } else { + *link_bw = drm_dp_link_rate_to_bw_code(port_clock); + *rate_select = 0; + } +} + bool intel_dp_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config) @@ -1363,6 +1376,7 @@ intel_dp_compute_config(struct intel_encoder *encoder, int link_avail, link_clock; int common_rates[DP_MAX_SUPPORTED_RATES] = {}; int common_len; + uint8_t link_bw, rate_select; common_len = intel_dp_common_rates(intel_dp, common_rates); @@ -1464,21 +1478,14 @@ found: pipe_config->lane_count = lane_count; - if (intel_dp->num_sink_rates) { - intel_dp->link_bw = 0; - intel_dp->rate_select = - intel_dp_rate_select(intel_dp, common_rates[clock]); - } else { - intel_dp->link_bw = - drm_dp_link_rate_to_bw_code(common_rates[clock]); - intel_dp->rate_select = 0; - } - pipe_config->pipe_bpp = bpp; pipe_config->port_clock = common_rates[clock]; - DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", - intel_dp->link_bw, pipe_config->lane_count, + intel_dp_compute_rate(intel_dp, pipe_config->port_clock, + &link_bw, &rate_select); + + DRM_DEBUG_KMS("DP link bw %02x rate select %02x lane count %d clock %d bpp %d\n", + link_bw, rate_select, pipe_config->lane_count, pipe_config->port_clock, bpp); DRM_DEBUG_KMS("DP link bw required %i available %i\n", mode_rate, link_avail); @@ -3587,19 +3594,23 @@ intel_dp_start_link_train(struct intel_dp *intel_dp) int voltage_tries, loop_tries; uint32_t DP = intel_dp->DP; uint8_t link_config[2]; + uint8_t link_bw, rate_select; if (HAS_DDI(dev)) intel_ddi_prepare_link_retrain(encoder); + intel_dp_compute_rate(intel_dp, crtc->config->port_clock, + &link_bw, &rate_select); + /* Write the link configuration data */ - link_config[0] = intel_dp->link_bw; + link_config[0] = link_bw; link_config[1] = crtc->config->lane_count; if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); if (intel_dp->num_sink_rates) drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, - &intel_dp->rate_select, 1); + &rate_select, 1); link_config[0] = 0; link_config[1] = DP_SET_ANSI_8B10B; diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index eeda730..3dc08da 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -38,7 +38,7 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, struct intel_dp *intel_dp = &intel_dig_port->dp; struct drm_atomic_state *state; int bpp, i; - int lane_count, slots, rate; + int lane_count, slots; struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; struct drm_connector *drm_connector; struct intel_connector *connector, *found = NULL; @@ -55,20 +55,11 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, */ lane_count = drm_dp_max_lane_count(intel_dp->dpcd); - rate = intel_dp_max_link_rate(intel_dp); - - if (intel_dp->num_sink_rates) { - intel_dp->link_bw = 0; - intel_dp->rate_select = intel_dp_rate_select(intel_dp, rate); - } else { - intel_dp->link_bw = drm_dp_link_rate_to_bw_code(rate); - intel_dp->rate_select = 0; - } pipe_config->lane_count = lane_count; pipe_config->pipe_bpp = 24; - pipe_config->port_clock = rate; + pipe_config->port_clock = intel_dp_max_link_rate(intel_dp); state = pipe_config->base.state; diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 703b394..709de50 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -718,8 +718,6 @@ struct intel_dp { enum hdmi_force_audio force_audio; bool limited_color_range; bool color_range_auto; - uint8_t link_bw; - uint8_t rate_select; uint8_t dpcd[DP_RECEIVER_CAP_SIZE]; uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE]; uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS]; -- 2.3.6 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx