/* * Copyright © 2014 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #ifndef DRM_DISPLAYID_H #define DRM_DISPLAYID_H #include <linux/types.h> #include <linux/bits.h> struct edid; #define VESA_IEEE_OUI 0x3a0292 /* DisplayID Structure versions */ #define DISPLAY_ID_STRUCTURE_VER_12 0x12 #define DISPLAY_ID_STRUCTURE_VER_20 0x20 /* DisplayID Structure v1r2 Data Blocks */ #define DATA_BLOCK_PRODUCT_ID 0x00 #define DATA_BLOCK_DISPLAY_PARAMETERS 0x01 #define DATA_BLOCK_COLOR_CHARACTERISTICS 0x02 #define DATA_BLOCK_TYPE_1_DETAILED_TIMING 0x03 #define DATA_BLOCK_TYPE_2_DETAILED_TIMING 0x04 #define DATA_BLOCK_TYPE_3_SHORT_TIMING 0x05 #define DATA_BLOCK_TYPE_4_DMT_TIMING 0x06 #define DATA_BLOCK_VESA_TIMING 0x07 #define DATA_BLOCK_CEA_TIMING 0x08 #define DATA_BLOCK_VIDEO_TIMING_RANGE 0x09 #define DATA_BLOCK_PRODUCT_SERIAL_NUMBER 0x0a #define DATA_BLOCK_GP_ASCII_STRING 0x0b #define DATA_BLOCK_DISPLAY_DEVICE_DATA 0x0c #define DATA_BLOCK_INTERFACE_POWER_SEQUENCING 0x0d #define DATA_BLOCK_TRANSFER_CHARACTERISTICS 0x0e #define DATA_BLOCK_DISPLAY_INTERFACE 0x0f #define DATA_BLOCK_STEREO_DISPLAY_INTERFACE 0x10 #define DATA_BLOCK_TILED_DISPLAY 0x12 #define DATA_BLOCK_VENDOR_SPECIFIC 0x7f #define DATA_BLOCK_CTA 0x81 /* DisplayID Structure v2r0 Data Blocks */ #define DATA_BLOCK_2_PRODUCT_ID 0x20 #define DATA_BLOCK_2_DISPLAY_PARAMETERS 0x21 #define DATA_BLOCK_2_TYPE_7_DETAILED_TIMING 0x22 #define DATA_BLOCK_2_TYPE_8_ENUMERATED_TIMING 0x23 #define DATA_BLOCK_2_TYPE_9_FORMULA_TIMING 0x24 #define DATA_BLOCK_2_DYNAMIC_VIDEO_TIMING 0x25 #define DATA_BLOCK_2_DISPLAY_INTERFACE_FEATURES 0x26 #define DATA_BLOCK_2_STEREO_DISPLAY_INTERFACE 0x27 #define DATA_BLOCK_2_TILED_DISPLAY_TOPOLOGY 0x28 #define DATA_BLOCK_2_CONTAINER_ID 0x29 #define DATA_BLOCK_2_VENDOR_SPECIFIC 0x7e #define DATA_BLOCK_2_CTA_DISPLAY_ID 0x81 /* DisplayID Structure v1r2 Product Type */ #define PRODUCT_TYPE_EXTENSION 0 #define PRODUCT_TYPE_TEST 1 #define PRODUCT_TYPE_PANEL 2 #define PRODUCT_TYPE_MONITOR 3 #define PRODUCT_TYPE_TV 4 #define PRODUCT_TYPE_REPEATER 5 #define PRODUCT_TYPE_DIRECT_DRIVE 6 /* DisplayID Structure v2r0 Display Product Primary Use Case (~Product Type) */ #define PRIMARY_USE_EXTENSION 0 #define PRIMARY_USE_TEST 1 #define PRIMARY_USE_GENERIC 2 #define PRIMARY_USE_TV 3 #define PRIMARY_USE_DESKTOP_PRODUCTIVITY 4 #define PRIMARY_USE_DESKTOP_GAMING 5 #define PRIMARY_USE_PRESENTATION 6 #define PRIMARY_USE_HEAD_MOUNTED_VR 7 #define PRIMARY_USE_HEAD_MOUNTED_AR 8 struct displayid_header { u8 rev; u8 bytes; u8 prod_id; u8 ext_count; } __packed; struct displayid_block { u8 tag; u8 rev; u8 num_bytes; } __packed; struct displayid_tiled_block { struct displayid_block base; u8 tile_cap; u8 topo[3]; u8 tile_size[4]; u8 tile_pixel_bezel[5]; u8 topology_id[8]; } __packed; struct displayid_detailed_timings_1 { u8 pixel_clock[3]; u8 flags; u8 hactive[2]; u8 hblank[2]; u8 hsync[2]; u8 hsw[2]; u8 vactive[2]; u8 vblank[2]; u8 vsync[2]; u8 vsw[2]; } __packed; struct displayid_detailed_timing_block { struct displayid_block base; struct displayid_detailed_timings_1 timings[]; }; #define DISPLAYID_VESA_MSO_OVERLAP GENMASK(3, 0) #define DISPLAYID_VESA_MSO_MODE GENMASK(6, 5) struct displayid_vesa_vendor_specific_block { struct displayid_block base; u8 oui[3]; u8 data_structure_type; u8 mso; } __packed; /* DisplayID iteration */ struct displayid_iter { const struct edid *edid; const u8 *section; int length; int idx; int ext_index; }; void displayid_iter_edid_begin(const struct edid *edid, struct displayid_iter *iter); const struct displayid_block * __displayid_iter_next(struct displayid_iter *iter); #define displayid_iter_for_each(__block, __iter) \ while (((__block) = __displayid_iter_next(__iter))) void displayid_iter_end(struct displayid_iter *iter); #endif