Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Thierry Reding | 376 | 98.95% | 15 | 88.24% |
Rob Clark | 2 | 0.53% | 1 | 5.88% |
Daniel Vetter | 2 | 0.53% | 1 | 5.88% |
Total | 380 | 17 |
/* SPDX-License-Identifier: MIT */ /* * Copyright (C) 2013-2019 NVIDIA Corporation. * Copyright (C) 2015 Rob Clark */ #ifndef DRM_TEGRA_DP_H #define DRM_TEGRA_DP_H 1 #include <linux/types.h> struct drm_display_info; struct drm_display_mode; struct drm_dp_aux; struct drm_dp_link; /** * struct drm_dp_link_caps - DP link capabilities */ struct drm_dp_link_caps { /** * @enhanced_framing: * * enhanced framing capability (mandatory as of DP 1.2) */ bool enhanced_framing; /** * tps3_supported: * * training pattern sequence 3 supported for equalization */ bool tps3_supported; /** * @fast_training: * * AUX CH handshake not required for link training */ bool fast_training; /** * @channel_coding: * * ANSI 8B/10B channel coding capability */ bool channel_coding; /** * @alternate_scrambler_reset: * * eDP alternate scrambler reset capability */ bool alternate_scrambler_reset; }; void drm_dp_link_caps_copy(struct drm_dp_link_caps *dest, const struct drm_dp_link_caps *src); /** * struct drm_dp_link_ops - DP link operations */ struct drm_dp_link_ops { /** * @apply_training: */ int (*apply_training)(struct drm_dp_link *link); /** * @configure: */ int (*configure)(struct drm_dp_link *link); }; #define DP_TRAIN_VOLTAGE_SWING_LEVEL(x) ((x) << 0) #define DP_TRAIN_PRE_EMPHASIS_LEVEL(x) ((x) << 3) #define DP_LANE_POST_CURSOR(i, x) (((x) & 0x3) << (((i) & 1) << 2)) /** * struct drm_dp_link_train_set - link training settings * @voltage_swing: per-lane voltage swing * @pre_emphasis: per-lane pre-emphasis * @post_cursor: per-lane post-cursor */ struct drm_dp_link_train_set { unsigned int voltage_swing[4]; unsigned int pre_emphasis[4]; unsigned int post_cursor[4]; }; /** * struct drm_dp_link_train - link training state information * @request: currently requested settings * @adjust: adjustments requested by sink * @pattern: currently requested training pattern * @clock_recovered: flag to track if clock recovery has completed * @channel_equalized: flag to track if channel equalization has completed */ struct drm_dp_link_train { struct drm_dp_link_train_set request; struct drm_dp_link_train_set adjust; unsigned int pattern; bool clock_recovered; bool channel_equalized; }; /** * struct drm_dp_link - DP link capabilities and configuration * @revision: DP specification revision supported on the link * @max_rate: maximum clock rate supported on the link * @max_lanes: maximum number of lanes supported on the link * @caps: capabilities supported on the link (see &drm_dp_link_caps) * @aux_rd_interval: AUX read interval to use for training (in microseconds) * @edp: eDP revision (0x11: eDP 1.1, 0x12: eDP 1.2, ...) * @rate: currently configured link rate * @lanes: currently configured number of lanes * @rates: additional supported link rates in kHz (eDP 1.4) * @num_rates: number of additional supported link rates (eDP 1.4) */ struct drm_dp_link { unsigned char revision; unsigned int max_rate; unsigned int max_lanes; struct drm_dp_link_caps caps; /** * @cr: clock recovery read interval * @ce: channel equalization read interval */ struct { unsigned int cr; unsigned int ce; } aux_rd_interval; unsigned char edp; unsigned int rate; unsigned int lanes; unsigned long rates[DP_MAX_SUPPORTED_RATES]; unsigned int num_rates; /** * @ops: DP link operations */ const struct drm_dp_link_ops *ops; /** * @aux: DP AUX channel */ struct drm_dp_aux *aux; /** * @train: DP link training state */ struct drm_dp_link_train train; }; int drm_dp_link_add_rate(struct drm_dp_link *link, unsigned long rate); int drm_dp_link_remove_rate(struct drm_dp_link *link, unsigned long rate); void drm_dp_link_update_rates(struct drm_dp_link *link); int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link); int drm_dp_link_power_up(struct drm_dp_aux *aux, struct drm_dp_link *link); int drm_dp_link_power_down(struct drm_dp_aux *aux, struct drm_dp_link *link); int drm_dp_link_configure(struct drm_dp_aux *aux, struct drm_dp_link *link); int drm_dp_link_choose(struct drm_dp_link *link, const struct drm_display_mode *mode, const struct drm_display_info *info); void drm_dp_link_train_init(struct drm_dp_link_train *train); int drm_dp_link_train(struct drm_dp_link *link); #endif
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