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 | #include <linux/bits.h> |
27 | |
28 | struct drm_edid; |
29 | |
30 | #define VESA_IEEE_OUI 0x3a0292 |
31 | |
32 | /* DisplayID Structure versions */ |
33 | #define DISPLAY_ID_STRUCTURE_VER_12 0x12 |
34 | #define DISPLAY_ID_STRUCTURE_VER_20 0x20 |
35 | |
36 | /* DisplayID Structure v1r2 Data Blocks */ |
37 | #define DATA_BLOCK_PRODUCT_ID 0x00 |
38 | #define DATA_BLOCK_DISPLAY_PARAMETERS 0x01 |
39 | #define DATA_BLOCK_COLOR_CHARACTERISTICS 0x02 |
40 | #define DATA_BLOCK_TYPE_1_DETAILED_TIMING 0x03 |
41 | #define DATA_BLOCK_TYPE_2_DETAILED_TIMING 0x04 |
42 | #define DATA_BLOCK_TYPE_3_SHORT_TIMING 0x05 |
43 | #define DATA_BLOCK_TYPE_4_DMT_TIMING 0x06 |
44 | #define DATA_BLOCK_VESA_TIMING 0x07 |
45 | #define DATA_BLOCK_CEA_TIMING 0x08 |
46 | #define DATA_BLOCK_VIDEO_TIMING_RANGE 0x09 |
47 | #define DATA_BLOCK_PRODUCT_SERIAL_NUMBER 0x0a |
48 | #define DATA_BLOCK_GP_ASCII_STRING 0x0b |
49 | #define DATA_BLOCK_DISPLAY_DEVICE_DATA 0x0c |
50 | #define DATA_BLOCK_INTERFACE_POWER_SEQUENCING 0x0d |
51 | #define DATA_BLOCK_TRANSFER_CHARACTERISTICS 0x0e |
52 | #define DATA_BLOCK_DISPLAY_INTERFACE 0x0f |
53 | #define DATA_BLOCK_STEREO_DISPLAY_INTERFACE 0x10 |
54 | #define DATA_BLOCK_TILED_DISPLAY 0x12 |
55 | #define DATA_BLOCK_VENDOR_SPECIFIC 0x7f |
56 | #define DATA_BLOCK_CTA 0x81 |
57 | |
58 | /* DisplayID Structure v2r0 Data Blocks */ |
59 | #define DATA_BLOCK_2_PRODUCT_ID 0x20 |
60 | #define DATA_BLOCK_2_DISPLAY_PARAMETERS 0x21 |
61 | #define DATA_BLOCK_2_TYPE_7_DETAILED_TIMING 0x22 |
62 | #define DATA_BLOCK_2_TYPE_8_ENUMERATED_TIMING 0x23 |
63 | #define DATA_BLOCK_2_TYPE_9_FORMULA_TIMING 0x24 |
64 | #define DATA_BLOCK_2_DYNAMIC_VIDEO_TIMING 0x25 |
65 | #define DATA_BLOCK_2_DISPLAY_INTERFACE_FEATURES 0x26 |
66 | #define DATA_BLOCK_2_STEREO_DISPLAY_INTERFACE 0x27 |
67 | #define DATA_BLOCK_2_TILED_DISPLAY_TOPOLOGY 0x28 |
68 | #define DATA_BLOCK_2_CONTAINER_ID 0x29 |
69 | #define DATA_BLOCK_2_VENDOR_SPECIFIC 0x7e |
70 | #define DATA_BLOCK_2_CTA_DISPLAY_ID 0x81 |
71 | |
72 | /* DisplayID Structure v1r2 Product Type */ |
73 | #define PRODUCT_TYPE_EXTENSION 0 |
74 | #define PRODUCT_TYPE_TEST 1 |
75 | #define PRODUCT_TYPE_PANEL 2 |
76 | #define PRODUCT_TYPE_MONITOR 3 |
77 | #define PRODUCT_TYPE_TV 4 |
78 | #define PRODUCT_TYPE_REPEATER 5 |
79 | #define PRODUCT_TYPE_DIRECT_DRIVE 6 |
80 | |
81 | /* DisplayID Structure v2r0 Display Product Primary Use Case (~Product Type) */ |
82 | #define PRIMARY_USE_EXTENSION 0 |
83 | #define PRIMARY_USE_TEST 1 |
84 | #define PRIMARY_USE_GENERIC 2 |
85 | #define PRIMARY_USE_TV 3 |
86 | #define PRIMARY_USE_DESKTOP_PRODUCTIVITY 4 |
87 | #define PRIMARY_USE_DESKTOP_GAMING 5 |
88 | #define PRIMARY_USE_PRESENTATION 6 |
89 | #define PRIMARY_USE_HEAD_MOUNTED_VR 7 |
90 | #define PRIMARY_USE_HEAD_MOUNTED_AR 8 |
91 | |
92 | struct { |
93 | u8 ; |
94 | u8 ; |
95 | u8 ; |
96 | u8 ; |
97 | } __packed; |
98 | |
99 | struct displayid_block { |
100 | u8 tag; |
101 | u8 rev; |
102 | u8 num_bytes; |
103 | } __packed; |
104 | |
105 | struct displayid_tiled_block { |
106 | struct displayid_block base; |
107 | u8 tile_cap; |
108 | u8 topo[3]; |
109 | u8 tile_size[4]; |
110 | u8 tile_pixel_bezel[5]; |
111 | u8 topology_id[8]; |
112 | } __packed; |
113 | |
114 | struct displayid_detailed_timings_1 { |
115 | u8 pixel_clock[3]; |
116 | u8 flags; |
117 | u8 hactive[2]; |
118 | u8 hblank[2]; |
119 | u8 hsync[2]; |
120 | u8 hsw[2]; |
121 | u8 vactive[2]; |
122 | u8 vblank[2]; |
123 | u8 vsync[2]; |
124 | u8 vsw[2]; |
125 | } __packed; |
126 | |
127 | struct displayid_detailed_timing_block { |
128 | struct displayid_block base; |
129 | struct displayid_detailed_timings_1 timings[]; |
130 | }; |
131 | |
132 | #define DISPLAYID_VESA_MSO_OVERLAP GENMASK(3, 0) |
133 | #define DISPLAYID_VESA_MSO_MODE GENMASK(6, 5) |
134 | |
135 | struct displayid_vesa_vendor_specific_block { |
136 | struct displayid_block base; |
137 | u8 oui[3]; |
138 | u8 data_structure_type; |
139 | u8 mso; |
140 | } __packed; |
141 | |
142 | /* |
143 | * DisplayID iteration. |
144 | * |
145 | * Do not access directly, this is private. |
146 | */ |
147 | struct displayid_iter { |
148 | const struct drm_edid *drm_edid; |
149 | |
150 | const u8 *section; |
151 | int length; |
152 | int idx; |
153 | int ext_index; |
154 | |
155 | u8 version; |
156 | u8 primary_use; |
157 | }; |
158 | |
159 | void displayid_iter_edid_begin(const struct drm_edid *drm_edid, |
160 | struct displayid_iter *iter); |
161 | const struct displayid_block * |
162 | __displayid_iter_next(struct displayid_iter *iter); |
163 | #define displayid_iter_for_each(__block, __iter) \ |
164 | while (((__block) = __displayid_iter_next(__iter))) |
165 | void displayid_iter_end(struct displayid_iter *iter); |
166 | |
167 | u8 displayid_version(const struct displayid_iter *iter); |
168 | u8 displayid_primary_use(const struct displayid_iter *iter); |
169 | |
170 | #endif |
171 | |