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 #include <linux/types.h> 26 27 struct edid; 28 29 #define DATA_BLOCK_PRODUCT_ID 0x00 30 #define DATA_BLOCK_DISPLAY_PARAMETERS 0x01 31 #define DATA_BLOCK_COLOR_CHARACTERISTICS 0x02 32 #define DATA_BLOCK_TYPE_1_DETAILED_TIMING 0x03 33 #define DATA_BLOCK_TYPE_2_DETAILED_TIMING 0x04 34 #define DATA_BLOCK_TYPE_3_SHORT_TIMING 0x05 35 #define DATA_BLOCK_TYPE_4_DMT_TIMING 0x06 36 #define DATA_BLOCK_VESA_TIMING 0x07 37 #define DATA_BLOCK_CEA_TIMING 0x08 38 #define DATA_BLOCK_VIDEO_TIMING_RANGE 0x09 39 #define DATA_BLOCK_PRODUCT_SERIAL_NUMBER 0x0a 40 #define DATA_BLOCK_GP_ASCII_STRING 0x0b 41 #define DATA_BLOCK_DISPLAY_DEVICE_DATA 0x0c 42 #define DATA_BLOCK_INTERFACE_POWER_SEQUENCING 0x0d 43 #define DATA_BLOCK_TRANSFER_CHARACTERISTICS 0x0e 44 #define DATA_BLOCK_DISPLAY_INTERFACE 0x0f 45 #define DATA_BLOCK_STEREO_DISPLAY_INTERFACE 0x10 46 #define DATA_BLOCK_TILED_DISPLAY 0x12 47 #define DATA_BLOCK_CTA 0x81 48 49 #define DATA_BLOCK_VENDOR_SPECIFIC 0x7f 50 51 #define PRODUCT_TYPE_EXTENSION 0 52 #define PRODUCT_TYPE_TEST 1 53 #define PRODUCT_TYPE_PANEL 2 54 #define PRODUCT_TYPE_MONITOR 3 55 #define PRODUCT_TYPE_TV 4 56 #define PRODUCT_TYPE_REPEATER 5 57 #define PRODUCT_TYPE_DIRECT_DRIVE 6 58 59 struct displayid_header { 60 u8 rev; 61 u8 bytes; 62 u8 prod_id; 63 u8 ext_count; 64 } __packed; 65 66 struct displayid_block { 67 u8 tag; 68 u8 rev; 69 u8 num_bytes; 70 } __packed; 71 72 struct displayid_tiled_block { 73 struct displayid_block base; 74 u8 tile_cap; 75 u8 topo[3]; 76 u8 tile_size[4]; 77 u8 tile_pixel_bezel[5]; 78 u8 topology_id[8]; 79 } __packed; 80 81 struct displayid_detailed_timings_1 { 82 u8 pixel_clock[3]; 83 u8 flags; 84 u8 hactive[2]; 85 u8 hblank[2]; 86 u8 hsync[2]; 87 u8 hsw[2]; 88 u8 vactive[2]; 89 u8 vblank[2]; 90 u8 vsync[2]; 91 u8 vsw[2]; 92 } __packed; 93 94 struct displayid_detailed_timing_block { 95 struct displayid_block base; 96 struct displayid_detailed_timings_1 timings[]; 97 }; 98 99 /* DisplayID iteration */ 100 struct displayid_iter { 101 const struct edid *edid; 102 103 const u8 *section; 104 int length; 105 int idx; 106 int ext_index; 107 }; 108 109 void displayid_iter_edid_begin(const struct edid *edid, 110 struct displayid_iter *iter); 111 const struct displayid_block * 112 __displayid_iter_next(struct displayid_iter *iter); 113 #define displayid_iter_for_each(__block, __iter) \ 114 while (((__block) = __displayid_iter_next(__iter))) 115 void displayid_iter_end(struct displayid_iter *iter); 116 117 #endif 118