/*      $OpenBSD: edidvar.h,v 1.3 2024/11/06 09:34:10 miod Exp $        */
/*      $NetBSD: edidvar.h,v 1.5 2021/12/19 11:01:01 riastradh Exp $    */

/*-
 * Copyright (c) 2006 Itronix Inc.
 * All rights reserved.
 *
 * Written by Garrett D'Amore for Itronix Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of Itronix Inc. may not be used to endorse
 *    or promote products derived from this software without specific
 *    prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _DEV_VIDEOMODE_EDIDVAR_H
#define _DEV_VIDEOMODE_EDIDVAR_H

#include <dev/videomode/videomode.h>

struct edid_chroma {
        uint16_t        ec_redx;
        uint16_t        ec_redy;
        uint16_t        ec_greenx;
        uint16_t        ec_greeny;
        uint16_t        ec_bluex;
        uint16_t        ec_bluey;
        uint16_t        ec_whitex;
        uint16_t        ec_whitey;
};

struct edid_range {
        uint16_t        er_min_vfreq;   /* Hz */
        uint16_t        er_max_vfreq;   /* Hz */
        uint16_t        er_min_hfreq;   /* kHz */
        uint16_t        er_max_hfreq;   /* kHz */
        uint16_t        er_max_clock;   /* MHz */
        int             er_have_gtf2;
        uint16_t        er_gtf2_hfreq;
        uint16_t        er_gtf2_c;
        uint16_t        er_gtf2_m;
        uint16_t        er_gtf2_k;
        uint16_t        er_gtf2_j;
};

struct edid_info {
        uint8_t         edid_vendor[4];
        char            edid_vendorname[16];
        char            edid_productname[16];
        char            edid_comment[16];
        char            edid_serial[16];
        uint16_t        edid_product;
        uint8_t         edid_version;
        uint8_t         edid_revision;
        int             edid_year;
        int             edid_week;
        uint8_t         edid_video_input;       /* see edidregs.h */
        uint8_t         edid_max_hsize;         /* in cm */
        uint8_t         edid_max_vsize;         /* in cm */
        uint8_t         edid_gamma;
        uint8_t         edid_features;
        uint8_t         edid_ext_block_count;

        int                     edid_have_range;
        struct edid_range       edid_range;

        struct edid_chroma      edid_chroma;
        /* parsed modes */
        struct videomode        *edid_preferred_mode;
        int                     edid_nmodes;
        struct videomode        edid_modes[64];
};

int edid_is_valid(uint8_t *);
int edid_parse(const char *, uint8_t *, struct edid_info *);
void edid_print(struct edid_info *);

#endif /* _DEV_VIDEOMODE_EDIDVAR_H */