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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2019 Intel Corporation
*/
#ifndef __INTEL_DP_LINK_TRAINING_H__
#define __INTEL_DP_LINK_TRAINING_H__
#include <drm/drm_dp_helper.h>
struct intel_crtc_state;
struct intel_dp;
int intel_dp_lttpr_init(struct intel_dp *intel_dp);
void intel_dp_get_adjust_train(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state,
enum drm_dp_phy dp_phy,
const u8 link_status[DP_LINK_STATUS_SIZE]);
void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state,
enum drm_dp_phy dp_phy);
void intel_dp_start_link_train(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state);
void intel_dp_stop_link_train(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state);
/* Get the TPSx symbol type of the value programmed to DP_TRAINING_PATTERN_SET */
static inline u8 intel_dp_training_pattern_symbol(u8 pattern)
{
return pattern & ~DP_LINK_SCRAMBLING_DISABLE;
}
#endif /* __INTEL_DP_LINK_TRAINING_H__ */
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