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      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 
     39 struct 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 
     50 struct 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 
     64 struct 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 
     93 int edid_is_valid(uint8_t *);
     94 int edid_parse(uint8_t *, struct edid_info *);
     95 void edid_print(struct edid_info *);
     96 
     97 #endif /* _DEV_VIDEOMODE_EDIDVAR_H */
     98