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