IABSD.fr/src/sys/dev/videomode/edidvar.h

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• Author : miod
  Date : 2024-11-06 09:34:10
  Hash : f5ce9e77
  Message : Sync with NetBSD: remove duplicate mode entries when parsing edid records, be more robust against bogus edid data.

• sys/dev/videomode/edidvar.h

• /*	$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 */