/*
 * Copyright 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>
 *
 * description of display timings
 *
 * This file is released under the GPLv2
 */

#ifndef __LINUX_DISPLAY_TIMING_H
#define __LINUX_DISPLAY_TIMING_H

#include <linux/bitops.h>
#include <linux/types.h>

enum display_flags {
	DISPLAY_FLAGS_HSYNC_LOW		= BIT(0),
	DISPLAY_FLAGS_HSYNC_HIGH	= BIT(1),
	DISPLAY_FLAGS_VSYNC_LOW		= BIT(2),
	DISPLAY_FLAGS_VSYNC_HIGH	= BIT(3),

	/* data enable flag */
	DISPLAY_FLAGS_DE_LOW		= BIT(4),
	DISPLAY_FLAGS_DE_HIGH		= BIT(5),
	/* drive data on pos. edge */
	DISPLAY_FLAGS_PIXDATA_POSEDGE	= BIT(6),
	/* drive data on neg. edge */
	DISPLAY_FLAGS_PIXDATA_NEGEDGE	= BIT(7),
	DISPLAY_FLAGS_INTERLACED	= BIT(8),
	DISPLAY_FLAGS_DOUBLESCAN	= BIT(9),
	DISPLAY_FLAGS_DOUBLECLK		= BIT(10),
	/* drive sync on pos. edge */
	DISPLAY_FLAGS_SYNC_POSEDGE	= BIT(11),
	/* drive sync on neg. edge */
	DISPLAY_FLAGS_SYNC_NEGEDGE	= BIT(12),
};

/*
 * A single signal can be specified via a range of minimal and maximal values
 * with a typical value, that lies somewhere inbetween.
 */
struct timing_entry {
	u32 min;
	u32 typ;
	u32 max;
};

/*
 * Single "mode" entry. This describes one set of signal timings a display can
 * have in one setting. This struct can later be converted to struct videomode
 * (see include/video/videomode.h). As each timing_entry can be defined as a
 * range, one struct display_timing may become multiple struct videomodes.
 *
 * Example: hsync active high, vsync active low
 *
 *				    Active Video
 * Video  ______________________XXXXXXXXXXXXXXXXXXXXXX_____________________
 *	  |<- sync ->|<- back ->|<----- active ----->|<- front ->|<- sync..
 *	  |	     |	 porch  |		     |	 porch	 |
 *
 * HSync _|¯¯¯¯¯¯¯¯¯¯|___________________________________________|¯¯¯¯¯¯¯¯¯
 *
 * VSync ¯|__________|¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯|_________
 */
struct display_timing {
	struct timing_entry pixelclock;

	struct timing_entry hactive;		/* hor. active video */
	struct timing_entry hfront_porch;	/* hor. front porch */
	struct timing_entry hback_porch;	/* hor. back porch */
	struct timing_entry hsync_len;		/* hor. sync len */

	struct timing_entry vactive;		/* ver. active video */
	struct timing_entry vfront_porch;	/* ver. front porch */
	struct timing_entry vback_porch;	/* ver. back porch */
	struct timing_entry vsync_len;		/* ver. sync len */

	enum display_flags flags;		/* display flags */
};

/*
 * This describes all timing settings a display provides.
 * The native_mode is the default setting for this display.
 * Drivers that can handle multiple videomodes should work with this struct and
 * convert each entry to the desired end result.
 */
struct display_timings {
	unsigned int num_timings;
	unsigned int native_mode;

	struct display_timing **timings;
};

/* get one entry from struct display_timings */
static inline struct display_timing *display_timings_get(const struct
							 display_timings *disp,
							 unsigned int index)
{
	if (disp->num_timings > index)
		return disp->timings[index];
	else
		return NULL;
}

void display_timings_release(struct display_timings *disp);

#endif
ffbf'>usb-acpi.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='206c4720092d2a24bfefc041b377e889a220ffbf'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=206c4720092d2a24bfefc041b377e889a220ffbf'>Diffstat</a> (limited to 'drivers/usb/core/usb-acpi.c')</div><table summary='diffstat' class='diffstat'>