1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved. 4 */ 5 6 #ifndef _DP_PANEL_H_ 7 #define _DP_PANEL_H_ 8 9 #include <drm/msm_drm.h> 10 11 #include "dp_aux.h" 12 #include "dp_link.h" 13 14 struct edid; 15 16 struct dp_display_mode { 17 struct drm_display_mode drm_mode; 18 u32 capabilities; 19 u32 bpp; 20 u32 h_active_low; 21 u32 v_active_low; 22 }; 23 24 struct dp_panel_in { 25 struct device *dev; 26 struct drm_dp_aux *aux; 27 struct dp_link *link; 28 struct dp_catalog *catalog; 29 }; 30 31 struct dp_panel_psr { 32 u8 version; 33 u8 capabilities; 34 }; 35 36 struct dp_panel { 37 /* dpcd raw data */ 38 u8 dpcd[DP_RECEIVER_CAP_SIZE]; 39 u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS]; 40 41 struct dp_link_info link_info; 42 struct drm_dp_desc desc; 43 struct edid *edid; 44 struct drm_connector *connector; 45 struct dp_display_mode dp_mode; 46 struct dp_panel_psr psr_cap; 47 bool video_test; 48 49 u32 vic; 50 u32 max_dp_lanes; 51 u32 max_dp_link_rate; 52 53 u32 max_bw_code; 54 }; 55 56 int dp_panel_init_panel_info(struct dp_panel *dp_panel); 57 int dp_panel_deinit(struct dp_panel *dp_panel); 58 int dp_panel_timing_cfg(struct dp_panel *dp_panel); 59 void dp_panel_dump_regs(struct dp_panel *dp_panel); 60 int dp_panel_read_sink_caps(struct dp_panel *dp_panel, 61 struct drm_connector *connector); 62 u32 dp_panel_get_mode_bpp(struct dp_panel *dp_panel, u32 mode_max_bpp, 63 u32 mode_pclk_khz); 64 int dp_panel_get_modes(struct dp_panel *dp_panel, 65 struct drm_connector *connector); 66 void dp_panel_handle_sink_request(struct dp_panel *dp_panel); 67 void dp_panel_tpg_config(struct dp_panel *dp_panel, bool enable); 68 69 /** 70 * is_link_rate_valid() - validates the link rate 71 * @lane_rate: link rate requested by the sink 72 * 73 * Returns true if the requested link rate is supported. 74 */ 75 static inline bool is_link_rate_valid(u32 bw_code) 76 { 77 return (bw_code == DP_LINK_BW_1_62 || 78 bw_code == DP_LINK_BW_2_7 || 79 bw_code == DP_LINK_BW_5_4 || 80 bw_code == DP_LINK_BW_8_1); 81 } 82 83 /** 84 * dp_link_is_lane_count_valid() - validates the lane count 85 * @lane_count: lane count requested by the sink 86 * 87 * Returns true if the requested lane count is supported. 88 */ 89 static inline bool is_lane_count_valid(u32 lane_count) 90 { 91 return (lane_count == 1 || 92 lane_count == 2 || 93 lane_count == 4); 94 } 95 96 struct dp_panel *dp_panel_get(struct dp_panel_in *in); 97 void dp_panel_put(struct dp_panel *dp_panel); 98 #endif /* _DP_PANEL_H_ */ 99