| 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 | bool out_fmt_is_yuv_420; |
| 23 | }; |
| 24 | |
| 25 | struct dp_panel_in { |
| 26 | struct device *dev; |
| 27 | struct drm_dp_aux *aux; |
| 28 | struct dp_link *link; |
| 29 | struct dp_catalog *catalog; |
| 30 | }; |
| 31 | |
| 32 | struct dp_panel_psr { |
| 33 | u8 version; |
| 34 | u8 capabilities; |
| 35 | }; |
| 36 | |
| 37 | struct dp_panel { |
| 38 | /* dpcd raw data */ |
| 39 | u8 dpcd[DP_RECEIVER_CAP_SIZE]; |
| 40 | u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS]; |
| 41 | |
| 42 | struct dp_link_info link_info; |
| 43 | struct drm_dp_desc desc; |
| 44 | struct edid *edid; |
| 45 | struct drm_connector *connector; |
| 46 | struct dp_display_mode dp_mode; |
| 47 | struct dp_panel_psr psr_cap; |
| 48 | bool video_test; |
| 49 | bool vsc_sdp_supported; |
| 50 | |
| 51 | u32 vic; |
| 52 | u32 max_dp_lanes; |
| 53 | u32 max_dp_link_rate; |
| 54 | |
| 55 | u32 max_bw_code; |
| 56 | }; |
| 57 | |
| 58 | int dp_panel_init_panel_info(struct dp_panel *dp_panel); |
| 59 | int dp_panel_deinit(struct dp_panel *dp_panel); |
| 60 | int dp_panel_timing_cfg(struct dp_panel *dp_panel); |
| 61 | void dp_panel_dump_regs(struct dp_panel *dp_panel); |
| 62 | int dp_panel_read_sink_caps(struct dp_panel *dp_panel, |
| 63 | struct drm_connector *connector); |
| 64 | u32 dp_panel_get_mode_bpp(struct dp_panel *dp_panel, u32 mode_max_bpp, |
| 65 | u32 mode_pclk_khz); |
| 66 | int dp_panel_get_modes(struct dp_panel *dp_panel, |
| 67 | struct drm_connector *connector); |
| 68 | void dp_panel_handle_sink_request(struct dp_panel *dp_panel); |
| 69 | void dp_panel_tpg_config(struct dp_panel *dp_panel, bool enable); |
| 70 | |
| 71 | /** |
| 72 | * is_link_rate_valid() - validates the link rate |
| 73 | * @lane_rate: link rate requested by the sink |
| 74 | * |
| 75 | * Returns true if the requested link rate is supported. |
| 76 | */ |
| 77 | static inline bool is_link_rate_valid(u32 bw_code) |
| 78 | { |
| 79 | return (bw_code == DP_LINK_BW_1_62 || |
| 80 | bw_code == DP_LINK_BW_2_7 || |
| 81 | bw_code == DP_LINK_BW_5_4 || |
| 82 | bw_code == DP_LINK_BW_8_1); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * dp_link_is_lane_count_valid() - validates the lane count |
| 87 | * @lane_count: lane count requested by the sink |
| 88 | * |
| 89 | * Returns true if the requested lane count is supported. |
| 90 | */ |
| 91 | static inline bool is_lane_count_valid(u32 lane_count) |
| 92 | { |
| 93 | return (lane_count == 1 || |
| 94 | lane_count == 2 || |
| 95 | lane_count == 4); |
| 96 | } |
| 97 | |
| 98 | struct dp_panel *dp_panel_get(struct dp_panel_in *in); |
| 99 | void dp_panel_put(struct dp_panel *dp_panel); |
| 100 | #endif /* _DP_PANEL_H_ */ |
| 101 |