363c317873
Factor out a function to read the sink's DPRX capabilities used by a follow-up patch enabling the DP tunnel BW allocation mode. Reviewed-by: Uma Shankar <uma.shankar@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240220211841.448846-10-imre.deak@intel.com
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/* SPDX-License-Identifier: MIT */
|
|
/*
|
|
* Copyright © 2019 Intel Corporation
|
|
*/
|
|
|
|
#ifndef __INTEL_DP_LINK_TRAINING_H__
|
|
#define __INTEL_DP_LINK_TRAINING_H__
|
|
|
|
#include <drm/display/drm_dp_helper.h>
|
|
|
|
struct intel_crtc_state;
|
|
struct intel_dp;
|
|
|
|
int intel_dp_read_dprx_caps(struct intel_dp *intel_dp, u8 dpcd[DP_RECEIVER_CAP_SIZE]);
|
|
int intel_dp_init_lttpr_and_dprx_caps(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_program_link_training_pattern(struct intel_dp *intel_dp,
|
|
const struct intel_crtc_state *crtc_state,
|
|
enum drm_dp_phy dp_phy,
|
|
u8 dp_train_pat);
|
|
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);
|
|
|
|
void
|
|
intel_dp_dump_link_status(struct intel_dp *intel_dp, enum drm_dp_phy dp_phy,
|
|
const u8 link_status[DP_LINK_STATUS_SIZE]);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
void intel_dp_128b132b_sdp_crc16(struct intel_dp *intel_dp,
|
|
const struct intel_crtc_state *crtc_state);
|
|
#endif /* __INTEL_DP_LINK_TRAINING_H__ */
|