1 | /* SPDX-License-Identifier: MIT */ |
2 | /* |
3 | * Copyright © 2019 Intel Corporation |
4 | */ |
5 | |
6 | #ifndef __INTEL_DP_LINK_TRAINING_H__ |
7 | #define __INTEL_DP_LINK_TRAINING_H__ |
8 | |
9 | #include <drm/display/drm_dp_helper.h> |
10 | |
11 | struct intel_crtc_state; |
12 | struct intel_dp; |
13 | |
14 | int intel_dp_read_dprx_caps(struct intel_dp *intel_dp, u8 dpcd[DP_RECEIVER_CAP_SIZE]); |
15 | int intel_dp_init_lttpr_and_dprx_caps(struct intel_dp *intel_dp); |
16 | |
17 | void intel_dp_get_adjust_train(struct intel_dp *intel_dp, |
18 | const struct intel_crtc_state *crtc_state, |
19 | enum drm_dp_phy dp_phy, |
20 | const u8 link_status[DP_LINK_STATUS_SIZE]); |
21 | void intel_dp_program_link_training_pattern(struct intel_dp *intel_dp, |
22 | const struct intel_crtc_state *crtc_state, |
23 | enum drm_dp_phy dp_phy, |
24 | u8 dp_train_pat); |
25 | void intel_dp_set_signal_levels(struct intel_dp *intel_dp, |
26 | const struct intel_crtc_state *crtc_state, |
27 | enum drm_dp_phy dp_phy); |
28 | void intel_dp_start_link_train(struct intel_dp *intel_dp, |
29 | const struct intel_crtc_state *crtc_state); |
30 | void intel_dp_stop_link_train(struct intel_dp *intel_dp, |
31 | const struct intel_crtc_state *crtc_state); |
32 | |
33 | void |
34 | intel_dp_dump_link_status(struct intel_dp *intel_dp, enum drm_dp_phy dp_phy, |
35 | const u8 link_status[DP_LINK_STATUS_SIZE]); |
36 | |
37 | /* Get the TPSx symbol type of the value programmed to DP_TRAINING_PATTERN_SET */ |
38 | static inline u8 intel_dp_training_pattern_symbol(u8 pattern) |
39 | { |
40 | return pattern & ~DP_LINK_SCRAMBLING_DISABLE; |
41 | } |
42 | |
43 | void intel_dp_128b132b_sdp_crc16(struct intel_dp *intel_dp, |
44 | const struct intel_crtc_state *crtc_state); |
45 | #endif /* __INTEL_DP_LINK_TRAINING_H__ */ |
46 | |