include/drm/drm_displayid.h

   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[];
  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