linux/drivers/video/of_display_timing.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * OF helpers for parsing display timings
 *
 * Copyright (c) 2012 Steffen Trumtrar <[email protected]>, Pengutronix
 *
 * based on of_videomode.c by Sascha Hauer <[email protected]>
 */
#include <linux/export.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <video/display_timing.h>
#include <video/of_display_timing.h>

/**
 * parse_timing_property - parse timing_entry from device_node
 * @np: device_node with the property
 * @name: name of the property
 * @result: will be set to the return value
 *
 * DESCRIPTION:
 * Every display_timing can be specified with either just the typical value or
 * a range consisting of min/typ/max. This function helps handling this
 **/
static int parse_timing_property(const struct device_node *np, const char *name,
			  struct timing_entry *result)
{ … }

/**
 * of_parse_display_timing - parse display_timing entry from device_node
 * @np: device_node with the properties
 * @dt: display_timing that contains the result. I may be partially written in case of errors
 **/
static int of_parse_display_timing(const struct device_node *np,
		struct display_timing *dt)
{ … }

/**
 * of_get_display_timing - parse a display_timing entry
 * @np: device_node with the timing subnode
 * @name: name of the timing node
 * @dt: display_timing struct to fill
 **/
int of_get_display_timing(const struct device_node *np, const char *name,
		struct display_timing *dt)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * of_get_display_timings - parse all display_timing entries from a device_node
 * @np: device_node with the subnodes
 **/
struct display_timings *of_get_display_timings(const struct device_node *np)
{ … }
EXPORT_SYMBOL_GPL(…);