From: Imre Deak Date: Mon, 10 Jun 2024 16:49:14 +0000 (+0300) Subject: drm/i915/dp: Move link train params to a substruct in intel_dp X-Git-Tag: v6.11-rc1~141^2~20^2~56 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6a03100200ddaf38ca6719c80c0ce454e990e1a0;p=thirdparty%2Flinux.git drm/i915/dp: Move link train params to a substruct in intel_dp For clarity move the link training parameters updated during link training based on the pass/fail LT result under a substruct in intel_dp. This prepares for later patches in this patchset adding similar params here. Rename intel_dp_reset_max_link_params() to intel_dp_reset_link_params() to better reflect what state gets reset. v2: Add the parameters to a more generic link substruct. (Jani) Cc: Jani Nikula Reviewed-by: Ville Syrjälä Signed-off-by: Imre Deak Link: https://patchwork.freedesktop.org/patch/msgid/20240610164933.2947366-3-imre.deak@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 4fa785fd664ed..3e493472cf06f 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1739,7 +1739,6 @@ struct intel_dp { u8 lane_count; u8 sink_count; bool link_trained; - bool reset_link_params; bool use_max_params; u8 dpcd[DP_RECEIVER_CAP_SIZE]; u8 psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE]; @@ -1761,10 +1760,14 @@ struct intel_dp { /* intersection of source and sink rates */ int num_common_rates; int common_rates[DP_MAX_SUPPORTED_RATES]; - /* Max lane count for the current link */ - int max_link_lane_count; - /* Max rate for the current link */ - int max_link_rate; + struct { + /* TODO: move the rest of link specific fields to here */ + /* Max lane count for the current link */ + int max_lane_count; + /* Max rate for the current link */ + int max_rate; + } link; + bool reset_link_params; int mso_link_count; int mso_pixel_overlap; /* sink or branch descriptor */ diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index b56752873a683..8541a304a72db 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -373,13 +373,13 @@ int intel_dp_max_common_lane_count(struct intel_dp *intel_dp) int intel_dp_max_lane_count(struct intel_dp *intel_dp) { - switch (intel_dp->max_link_lane_count) { + switch (intel_dp->link.max_lane_count) { case 1: case 2: case 4: - return intel_dp->max_link_lane_count; + return intel_dp->link.max_lane_count; default: - MISSING_CASE(intel_dp->max_link_lane_count); + MISSING_CASE(intel_dp->link.max_lane_count); return 1; } } @@ -645,7 +645,7 @@ static bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate, * boot-up. */ if (link_rate == 0 || - link_rate > intel_dp->max_link_rate) + link_rate > intel_dp->link.max_rate) return false; if (lane_count == 0 || @@ -706,8 +706,8 @@ int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, "Retrying Link training for eDP with same parameters\n"); return 0; } - intel_dp->max_link_rate = intel_dp_common_rate(intel_dp, index - 1); - intel_dp->max_link_lane_count = lane_count; + intel_dp->link.max_rate = intel_dp_common_rate(intel_dp, index - 1); + intel_dp->link.max_lane_count = lane_count; } else if (lane_count > 1) { if (intel_dp_is_edp(intel_dp) && !intel_dp_can_link_train_fallback_for_edp(intel_dp, @@ -717,8 +717,8 @@ int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, "Retrying Link training for eDP with same parameters\n"); return 0; } - intel_dp->max_link_rate = intel_dp_max_common_rate(intel_dp); - intel_dp->max_link_lane_count = lane_count >> 1; + intel_dp->link.max_rate = intel_dp_max_common_rate(intel_dp); + intel_dp->link.max_lane_count = lane_count >> 1; } else { drm_err(&i915->drm, "Link Training Unsuccessful\n"); return -1; @@ -1383,7 +1383,7 @@ intel_dp_max_link_rate(struct intel_dp *intel_dp) { int len; - len = intel_dp_common_len_rate_limit(intel_dp, intel_dp->max_link_rate); + len = intel_dp_common_len_rate_limit(intel_dp, intel_dp->link.max_rate); return intel_dp_common_rate(intel_dp, len - 1); } @@ -3027,10 +3027,10 @@ void intel_dp_set_link_params(struct intel_dp *intel_dp, intel_dp->lane_count = lane_count; } -static void intel_dp_reset_max_link_params(struct intel_dp *intel_dp) +static void intel_dp_reset_link_params(struct intel_dp *intel_dp) { - intel_dp->max_link_lane_count = intel_dp_max_common_lane_count(intel_dp); - intel_dp->max_link_rate = intel_dp_max_common_rate(intel_dp); + intel_dp->link.max_lane_count = intel_dp_max_common_lane_count(intel_dp); + intel_dp->link.max_rate = intel_dp_max_common_rate(intel_dp); } /* Enable backlight PWM and backlight PP control. */ @@ -3365,7 +3365,7 @@ void intel_dp_sync_state(struct intel_encoder *encoder, intel_dp_tunnel_resume(intel_dp, crtc_state, dpcd_updated); if (crtc_state) - intel_dp_reset_max_link_params(intel_dp); + intel_dp_reset_link_params(intel_dp); } bool intel_dp_initial_fastset_check(struct intel_encoder *encoder, @@ -5907,7 +5907,7 @@ intel_dp_detect(struct drm_connector *connector, * supports link training fallback params. */ if (intel_dp->reset_link_params || intel_dp->is_mst) { - intel_dp_reset_max_link_params(intel_dp); + intel_dp_reset_link_params(intel_dp); intel_dp->reset_link_params = false; } @@ -6761,7 +6761,7 @@ intel_dp_init_connector(struct intel_digital_port *dig_port, intel_dp_set_source_rates(intel_dp); intel_dp_set_common_rates(intel_dp); - intel_dp_reset_max_link_params(intel_dp); + intel_dp_reset_link_params(intel_dp); /* init MST on ports that can support it */ intel_dp_mst_encoder_init(dig_port,