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