/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * (C) Copyright 2004
 * Pierre Aubert, Staubli Faverges , <p.aubert@staubli.com>
 */

#include <edid.h>

/* Some mode definitions */
#define FB_SYNC_HOR_HIGH_ACT	1	/* horizontal sync high active	*/
#define FB_SYNC_VERT_HIGH_ACT	2	/* vertical sync high active	*/
#define FB_SYNC_EXT		4	/* external sync		*/
#define FB_SYNC_COMP_HIGH_ACT	8	/* composite sync high active	*/
#define FB_SYNC_BROADCAST	16	/* broadcast video timings	*/
					/* vtotal = 144d/288n/576i => PAL  */
					/* vtotal = 121d/242n/484i => NTSC */
#define FB_SYNC_ON_GREEN	32	/* sync on green */
#define FB_VMODE_NONINTERLACED	0	/* non interlaced */
#define FB_VMODE_INTERLACED	1	/* interlaced	*/
#define FB_VMODE_DOUBLE		2	/* double scan */
#define FB_VMODE_MASK		255

#define FB_VMODE_YWRAP		256	/* ywrap instead of panning	*/
#define FB_VMODE_SMOOTH_XPAN	512	/* smooth xpan possible (internally used) */
#define FB_VMODE_CONUPDATE	512	/* don't update x/yoffset	*/

/******************************************************************
 * Resolution Struct
 ******************************************************************/
struct ctfb_res_modes {
	int xres;		/* visible resolution		*/
	int yres;
	int refresh;		/* vertical refresh rate in hz  */
	/* Timing: All values in pixclocks, except pixclock (of course) */
	int pixclock;		/* pixel clock in ps (pico seconds) */
	int pixclock_khz;	/* pixel clock in kHz           */
	int left_margin;	/* time from sync to picture	*/
	int right_margin;	/* time from picture to sync	*/
	int upper_margin;	/* time from sync to picture	*/
	int lower_margin;
	int hsync_len;		/* length of horizontal sync	*/
	int vsync_len;		/* length of vertical sync	*/
	int sync;		/* see FB_SYNC_*		*/
	int vmode;		/* see FB_VMODE_*		*/
};

/******************************************************************
 * Vesa Mode Struct
 ******************************************************************/
struct ctfb_vesa_modes {
	int vesanr;		/* Vesa number as in LILO (VESA Nr + 0x200} */
	int resindex;		/* index to resolution struct */
	int bits_per_pixel;	/* bpp */
};

#define RES_MODE_640x480	0
#define RES_MODE_800x600	1
#define RES_MODE_1024x768	2
#define RES_MODE_960_720	3
#define RES_MODE_1152x864	4
#define RES_MODE_1280x1024	5
#define RES_MODE_1280x720	6
#define RES_MODE_1360x768	7
#define RES_MODE_1920x1080	8
#define RES_MODE_1920x1200	9
#define RES_MODES_COUNT		10

#define VESA_MODES_COUNT 19

extern const struct ctfb_vesa_modes vesa_modes[];
extern const struct ctfb_res_modes res_mode_init[];

int video_get_params (struct ctfb_res_modes *pPar, char *penv);

int video_get_video_mode(unsigned int *xres, unsigned int *yres,
	unsigned int *depth, unsigned int *freq, const char **options);

void video_get_ctfb_res_modes(int default_mode, unsigned int default_depth,
			      const struct ctfb_res_modes **mode_ret,
			      unsigned int *depth_ret,
			      const char **options);

void video_get_option_string(const char *options, const char *name,
			     char *dest, int dest_len, const char *def);

int video_get_option_int(const char *options, const char *name, int def);

int video_edid_dtd_to_ctfb_res_modes(struct edid_detailed_timing *t,
				     struct ctfb_res_modes *mode);
/**
 * video_ctfb_mode_to_display_timing() - Convert a ctfb(Cathode Tube Frame
 *					 Buffer)_res_modes struct to a
 *					 display_timing struct.
 *
 * @mode:	Input ctfb_res_modes structure pointer to be converted
 *		from
 * @timing:	Output display_timing structure pointer to be converted to
 */
void video_ctfb_mode_to_display_timing(const struct ctfb_res_modes *mode,
				       struct display_timing *timing);