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3ee7fab0f3
Abstract link status check to a function that takes 128b/132b and 8b/10b into account, and use it. Also dump link status on failures. Cc: Uma Shankar <uma.shankar@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/cec395d435679a290a1c35fcbfc54555101bfad1.1643878928.git.jani.nikula@intel.com
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef __INTEL_DP_LINK_TRAINING_H__
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#define __INTEL_DP_LINK_TRAINING_H__
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#include <drm/drm_dp_helper.h>
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struct intel_crtc_state;
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struct intel_dp;
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int intel_dp_init_lttpr_and_dprx_caps(struct intel_dp *intel_dp);
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void intel_dp_get_adjust_train(struct intel_dp *intel_dp,
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const struct intel_crtc_state *crtc_state,
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enum drm_dp_phy dp_phy,
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const u8 link_status[DP_LINK_STATUS_SIZE]);
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void intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
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const struct intel_crtc_state *crtc_state,
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enum drm_dp_phy dp_phy,
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u8 dp_train_pat);
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void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
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const struct intel_crtc_state *crtc_state,
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enum drm_dp_phy dp_phy);
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void intel_dp_start_link_train(struct intel_dp *intel_dp,
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const struct intel_crtc_state *crtc_state);
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void intel_dp_stop_link_train(struct intel_dp *intel_dp,
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const struct intel_crtc_state *crtc_state);
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void
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intel_dp_dump_link_status(struct intel_dp *intel_dp, enum drm_dp_phy dp_phy,
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const u8 link_status[DP_LINK_STATUS_SIZE]);
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/* Get the TPSx symbol type of the value programmed to DP_TRAINING_PATTERN_SET */
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static inline u8 intel_dp_training_pattern_symbol(u8 pattern)
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{
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return pattern & ~DP_LINK_SCRAMBLING_DISABLE;
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}
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#endif /* __INTEL_DP_LINK_TRAINING_H__ */
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