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1/* $OpenBSD: edidvar.h,v 1.3 2024/11/06 09:34:10 miod Exp $ */
2/* $NetBSD: edidvar.h,v 1.5 2021/12/19 11:01:01 riastradh Exp $ */
3
4/*-
5 * Copyright (c) 2006 Itronix Inc.
6 * All rights reserved.
7 *
8 * Written by Garrett D'Amore for Itronix Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of Itronix Inc. may not be used to endorse
19 * or promote products derived from this software without specific
20 * prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
23 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
26 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
28 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef _DEV_VIDEOMODE_EDIDVAR_H
36#define _DEV_VIDEOMODE_EDIDVAR_H
37
38#include <dev/videomode/videomode.h>
39
40struct edid_chroma {
41 uint16_t ec_redx;
42 uint16_t ec_redy;
43 uint16_t ec_greenx;
44 uint16_t ec_greeny;
45 uint16_t ec_bluex;
46 uint16_t ec_bluey;
47 uint16_t ec_whitex;
48 uint16_t ec_whitey;
49};
50
51struct edid_range {
52 uint16_t er_min_vfreq; /* Hz */
53 uint16_t er_max_vfreq; /* Hz */
54 uint16_t er_min_hfreq; /* kHz */
55 uint16_t er_max_hfreq; /* kHz */
56 uint16_t er_max_clock; /* MHz */
57 int er_have_gtf2;
58 uint16_t er_gtf2_hfreq;
59 uint16_t er_gtf2_c;
60 uint16_t er_gtf2_m;
61 uint16_t er_gtf2_k;
62 uint16_t er_gtf2_j;
63};
64
65struct edid_info {
66 uint8_t edid_vendor[4];
67 char edid_vendorname[16];
68 char edid_productname[16];
69 char edid_comment[16];
70 char edid_serial[16];
71 uint16_t edid_product;
72 uint8_t edid_version;
73 uint8_t edid_revision;
74 int edid_year;
75 int edid_week;
76 uint8_t edid_video_input; /* see edidregs.h */
77 uint8_t edid_max_hsize; /* in cm */
78 uint8_t edid_max_vsize; /* in cm */
79 uint8_t edid_gamma;
80 uint8_t edid_features;
81 uint8_t edid_ext_block_count;
82
83 int edid_have_range;
84 struct edid_range edid_range;
85
86 struct edid_chroma edid_chroma;
87 /* parsed modes */
88 struct videomode *edid_preferred_mode;
89 int edid_nmodes;
90 struct videomode edid_modes[64];
91};
92
93int edid_is_valid(uint8_t *);
94int edid_parse(const char *, uint8_t *, struct edid_info *);
95void edid_print(struct edid_info *);
96
97#endif /* _DEV_VIDEOMODE_EDIDVAR_H */