/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved. */ #ifndef _DP_PANEL_H_ #define _DP_PANEL_H_ #include <drm/msm_drm.h> #include "dp_aux.h" #include "dp_link.h" #include "dp_hpd.h" struct edid; #define DPRX_EXTENDED_DPCD_FIELD 0x2200 #define DP_DOWNSTREAM_PORTS 4 #define DP_DOWNSTREAM_CAP_SIZE 4 struct dp_display_mode { struct drm_display_mode drm_mode; u32 capabilities; u32 bpp; u32 h_active_low; u32 v_active_low; }; struct dp_panel_in { struct device *dev; struct drm_dp_aux *aux; struct dp_link *link; struct dp_catalog *catalog; }; struct dp_panel { /* dpcd raw data */ u8 dpcd[DP_RECEIVER_CAP_SIZE + 1]; u8 ds_cap_info[DP_DOWNSTREAM_PORTS * DP_DOWNSTREAM_CAP_SIZE]; u32 ds_port_cnt; u32 dfp_present; struct dp_link_info link_info; struct drm_dp_desc desc; struct edid *edid; struct drm_connector *connector; struct dp_display_mode dp_mode; bool video_test; u32 vic; u32 max_dp_lanes; u32 max_bw_code; }; int dp_panel_init_panel_info(struct dp_panel *dp_panel); int dp_panel_deinit(struct dp_panel *dp_panel); int dp_panel_timing_cfg(struct dp_panel *dp_panel); void dp_panel_dump_regs(struct dp_panel *dp_panel); int dp_panel_read_sink_caps(struct dp_panel *dp_panel, struct drm_connector *connector); u32 dp_panel_get_mode_bpp(struct dp_panel *dp_panel, u32 mode_max_bpp, u32 mode_pclk_khz); int dp_panel_get_modes(struct dp_panel *dp_panel, struct drm_connector *connector); void dp_panel_handle_sink_request(struct dp_panel *dp_panel); void dp_panel_tpg_config(struct dp_panel *dp_panel, bool enable); /** * is_link_rate_valid() - validates the link rate * @lane_rate: link rate requested by the sink * * Returns true if the requested link rate is supported. */ static inline bool is_link_rate_valid(u32 bw_code) { return (bw_code == DP_LINK_BW_1_62 || bw_code == DP_LINK_BW_2_7 || bw_code == DP_LINK_BW_5_4 || bw_code == DP_LINK_BW_8_1); } /** * dp_link_is_lane_count_valid() - validates the lane count * @lane_count: lane count requested by the sink * * Returns true if the requested lane count is supported. */ static inline bool is_lane_count_valid(u32 lane_count) { return (lane_count == 1 || lane_count == 2 || lane_count == 4); } struct dp_panel *dp_panel_get(struct dp_panel_in *in); void dp_panel_put(struct dp_panel *dp_panel); #endif /* _DP_PANEL_H_ */