LXR linux/include/drm/drm

   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
  55struct displayid_hdr {
  56        u8 rev;
  57        u8 bytes;
  58        u8 prod_id;
  59        u8 ext_count;
  60} __packed;
  61
  62struct displayid_block {
  63        u8 tag;
  64        u8 rev;
  65        u8 num_bytes;
  66} __packed;
  67
  68struct 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
  77struct 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
  90struct 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) += (block)->num_bytes + sizeof(struct displayid_block), \
 101             (block) = (struct displayid_block *)&(displayid)[idx])
 102
 103#endif
 104