1/*	$NetBSD: edidvar.h,v 1.5 2021/12/19 11:01:01 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 2006 Itronix Inc.
5 * All rights reserved.
6 *
7 * Written by Garrett D'Amore for Itronix Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. The name of Itronix Inc. may not be used to endorse
18 *    or promote products derived from this software without specific
19 *    prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef _DEV_VIDEOMODE_EDIDVAR_H
35#define _DEV_VIDEOMODE_EDIDVAR_H
36
37#include <dev/videomode/videomode.h>
38
39struct edid_chroma {
40	uint16_t	ec_redx;
41	uint16_t	ec_redy;
42	uint16_t	ec_greenx;
43	uint16_t	ec_greeny;
44	uint16_t	ec_bluex;
45	uint16_t	ec_bluey;
46	uint16_t	ec_whitex;
47	uint16_t	ec_whitey;
48};
49
50struct edid_range {
51	uint16_t	er_min_vfreq;	/* Hz */
52	uint16_t	er_max_vfreq;	/* Hz */
53	uint16_t	er_min_hfreq;	/* kHz */
54	uint16_t	er_max_hfreq;	/* kHz */
55	uint16_t	er_max_clock;	/* MHz */
56	int		er_have_gtf2;
57	uint16_t	er_gtf2_hfreq;
58	uint16_t	er_gtf2_c;
59	uint16_t	er_gtf2_m;
60	uint16_t	er_gtf2_k;
61	uint16_t	er_gtf2_j;
62};
63
64struct edid_info {
65	uint8_t		edid_vendor[4];
66	char		edid_vendorname[16];
67	char		edid_productname[16];
68	char		edid_comment[16];
69	char		edid_serial[16];
70	uint16_t	edid_product;
71	uint8_t		edid_version;
72	uint8_t		edid_revision;
73	int		edid_year;
74	int		edid_week;
75	uint8_t		edid_video_input;	/* see edidregs.h */
76	uint8_t		edid_max_hsize;		/* in cm */
77	uint8_t		edid_max_vsize;		/* in cm */
78	uint8_t		edid_gamma;
79	uint8_t		edid_features;
80	uint8_t		edid_ext_block_count;
81
82	int			edid_have_range;
83	struct edid_range	edid_range;
84
85	struct edid_chroma	edid_chroma;
86
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(uint8_t *, struct edid_info *);
95void edid_print(struct edid_info *);
96
97#endif /* _DEV_VIDEOMODE_EDIDVAR_H */
98