1 /* $NetBSD: drm_displayid.h,v 1.4 2021/12/19 09:46:13 riastradh Exp $ */ 2 3 /* 4 * Copyright 2014 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 #ifndef DRM_DISPLAYID_H 25 #define DRM_DISPLAYID_H 26 27 #define DATA_BLOCK_PRODUCT_ID 0x00 28 #define DATA_BLOCK_DISPLAY_PARAMETERS 0x01 29 #define DATA_BLOCK_COLOR_CHARACTERISTICS 0x02 30 #define DATA_BLOCK_TYPE_1_DETAILED_TIMING 0x03 31 #define DATA_BLOCK_TYPE_2_DETAILED_TIMING 0x04 32 #define DATA_BLOCK_TYPE_3_SHORT_TIMING 0x05 33 #define DATA_BLOCK_TYPE_4_DMT_TIMING 0x06 34 #define DATA_BLOCK_VESA_TIMING 0x07 35 #define DATA_BLOCK_CEA_TIMING 0x08 36 #define DATA_BLOCK_VIDEO_TIMING_RANGE 0x09 37 #define DATA_BLOCK_PRODUCT_SERIAL_NUMBER 0x0a 38 #define DATA_BLOCK_GP_ASCII_STRING 0x0b 39 #define DATA_BLOCK_DISPLAY_DEVICE_DATA 0x0c 40 #define DATA_BLOCK_INTERFACE_POWER_SEQUENCING 0x0d 41 #define DATA_BLOCK_TRANSFER_CHARACTERISTICS 0x0e 42 #define DATA_BLOCK_DISPLAY_INTERFACE 0x0f 43 #define DATA_BLOCK_STEREO_DISPLAY_INTERFACE 0x10 44 #define DATA_BLOCK_TILED_DISPLAY 0x12 45 #define DATA_BLOCK_CTA 0x81 46 47 #define DATA_BLOCK_VENDOR_SPECIFIC 0x7f 48 49 #define PRODUCT_TYPE_EXTENSION 0 50 #define PRODUCT_TYPE_TEST 1 51 #define PRODUCT_TYPE_PANEL 2 52 #define PRODUCT_TYPE_MONITOR 3 53 #define PRODUCT_TYPE_TV 4 54 #define PRODUCT_TYPE_REPEATER 5 55 #define PRODUCT_TYPE_DIRECT_DRIVE 6 56 57 struct displayid_hdr { 58 u8 rev; 59 u8 bytes; 60 u8 prod_id; 61 u8 ext_count; 62 } __packed; 63 64 struct displayid_block { 65 u8 tag; 66 u8 rev; 67 u8 num_bytes; 68 } __packed; 69 70 struct displayid_tiled_block { 71 struct displayid_block base; 72 u8 tile_cap; 73 u8 topo[3]; 74 u8 tile_size[4]; 75 u8 tile_pixel_bezel[5]; 76 u8 topology_id[8]; 77 } __packed; 78 79 struct displayid_detailed_timings_1 { 80 u8 pixel_clock[3]; 81 u8 flags; 82 u8 hactive[2]; 83 u8 hblank[2]; 84 u8 hsync[2]; 85 u8 hsw[2]; 86 u8 vactive[2]; 87 u8 vblank[2]; 88 u8 vsync[2]; 89 u8 vsw[2]; 90 } __packed; 91 92 struct displayid_detailed_timing_block { 93 struct displayid_block base; 94 struct displayid_detailed_timings_1 timings[0]; 95 }; 96 97 #define for_each_displayid_db(displayid, block, idx, length) \ 98 for ((block) = (const struct displayid_block *)&(displayid)[idx]; \ 99 (idx) + sizeof(struct displayid_block) <= (length) && \ 100 (idx) + sizeof(struct displayid_block) + (block)->num_bytes <= (length) && \ 101 (block)->num_bytes > 0; \ 102 (idx) += (block)->num_bytes + sizeof(struct displayid_block), \ 103 (block) = (const struct displayid_block *)&(displayid)[idx]) 104 105 #endif 106
Indexes created Sat Sep 20 22:09:52 GMT 2025