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 msm_dp_display_mode { 17 struct drm_display_mode drm_mode; 18 u32 bpp; 19 u32 h_active_low; 20 u32 v_active_low; 21 bool out_fmt_is_yuv_420; 22 }; 23 24 struct msm_dp_panel_psr { 25 u8 version; 26 u8 capabilities; 27 }; 28 29 struct msm_dp_panel { 30 /* dpcd raw data */ 31 u8 dpcd[DP_RECEIVER_CAP_SIZE]; 32 u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS]; 33 34 struct msm_dp_link_info link_info; 35 const struct drm_edid *drm_edid; 36 struct drm_connector *connector; 37 struct msm_dp_display_mode msm_dp_mode; 38 struct msm_dp_panel_psr psr_cap; 39 bool video_test; 40 bool vsc_sdp_supported; 41 42 u32 max_dp_lanes; 43 u32 max_dp_link_rate; 44 45 u32 max_bw_code; 46 }; 47 48 int msm_dp_panel_init_panel_info(struct msm_dp_panel *msm_dp_panel); 49 int msm_dp_panel_deinit(struct msm_dp_panel *msm_dp_panel); 50 int msm_dp_panel_timing_cfg(struct msm_dp_panel *msm_dp_panel); 51 int msm_dp_panel_read_sink_caps(struct msm_dp_panel *msm_dp_panel, 52 struct drm_connector *connector); 53 u32 msm_dp_panel_get_mode_bpp(struct msm_dp_panel *msm_dp_panel, u32 mode_max_bpp, 54 u32 mode_pclk_khz); 55 int msm_dp_panel_get_modes(struct msm_dp_panel *msm_dp_panel, 56 struct drm_connector *connector); 57 void msm_dp_panel_handle_sink_request(struct msm_dp_panel *msm_dp_panel); 58 void msm_dp_panel_tpg_config(struct msm_dp_panel *msm_dp_panel, bool enable); 59 60 /** 61 * is_link_rate_valid() - validates the link rate 62 * @lane_rate: link rate requested by the sink 63 * 64 * Returns true if the requested link rate is supported. 65 */ is_link_rate_valid(u32 bw_code)66static inline bool is_link_rate_valid(u32 bw_code) 67 { 68 return (bw_code == DP_LINK_BW_1_62 || 69 bw_code == DP_LINK_BW_2_7 || 70 bw_code == DP_LINK_BW_5_4 || 71 bw_code == DP_LINK_BW_8_1); 72 } 73 74 /** 75 * msm_dp_link_is_lane_count_valid() - validates the lane count 76 * @lane_count: lane count requested by the sink 77 * 78 * Returns true if the requested lane count is supported. 79 */ is_lane_count_valid(u32 lane_count)80static inline bool is_lane_count_valid(u32 lane_count) 81 { 82 return (lane_count == 1 || 83 lane_count == 2 || 84 lane_count == 4); 85 } 86 87 struct msm_dp_panel *msm_dp_panel_get(struct device *dev, struct drm_dp_aux *aux, 88 struct msm_dp_link *link, struct msm_dp_catalog *catalog); 89 void msm_dp_panel_put(struct msm_dp_panel *msm_dp_panel); 90 #endif /* _DP_PANEL_H_ */ 91