1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * generic videomode helper
 4 *
 5 * Copyright (c) 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>, Pengutronix
 
 
 6 */
 7#include <linux/errno.h>
 8#include <linux/export.h>
 9#include <linux/of.h>
10#include <video/display_timing.h>
11#include <video/of_display_timing.h>
12#include <video/of_videomode.h>
13#include <video/videomode.h>
14
15/**
16 * of_get_videomode - get the videomode #<index> from devicetree
17 * @np - devicenode with the display_timings
18 * @vm - set to return value
19 * @index - index into list of display_timings
20 *	    (Set this to OF_USE_NATIVE_MODE to use whatever mode is
21 *	     specified as native mode in the DT.)
22 *
23 * DESCRIPTION:
24 * Get a list of all display timings and put the one
25 * specified by index into *vm. This function should only be used, if
26 * only one videomode is to be retrieved. A driver that needs to work
27 * with multiple/all videomodes should work with
28 * of_get_display_timings instead.
29 **/
30int of_get_videomode(struct device_node *np, struct videomode *vm,
31		     int index)
32{
33	struct display_timings *disp;
34	int ret;
35
36	disp = of_get_display_timings(np);
37	if (!disp) {
38		pr_err("%pOF: no timings specified\n", np);
39		return -EINVAL;
40	}
41
42	if (index == OF_USE_NATIVE_MODE)
43		index = disp->native_mode;
44
45	ret = videomode_from_timings(disp, vm, index);
46
47	display_timings_release(disp);
48
49	return ret;
50}
51EXPORT_SYMBOL_GPL(of_get_videomode);

 
 1/*
 2 * generic videomode helper
 3 *
 4 * Copyright (c) 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>, Pengutronix
 5 *
 6 * This file is released under the GPLv2
 7 */
 8#include <linux/errno.h>
 9#include <linux/export.h>
10#include <linux/of.h>
11#include <video/display_timing.h>
12#include <video/of_display_timing.h>
13#include <video/of_videomode.h>
14#include <video/videomode.h>
15
16/**
17 * of_get_videomode - get the videomode #<index> from devicetree
18 * @np - devicenode with the display_timings
19 * @vm - set to return value
20 * @index - index into list of display_timings
21 *	    (Set this to OF_USE_NATIVE_MODE to use whatever mode is
22 *	     specified as native mode in the DT.)
23 *
24 * DESCRIPTION:
25 * Get a list of all display timings and put the one
26 * specified by index into *vm. This function should only be used, if
27 * only one videomode is to be retrieved. A driver that needs to work
28 * with multiple/all videomodes should work with
29 * of_get_display_timings instead.
30 **/
31int of_get_videomode(struct device_node *np, struct videomode *vm,
32		     int index)
33{
34	struct display_timings *disp;
35	int ret;
36
37	disp = of_get_display_timings(np);
38	if (!disp) {
39		pr_err("%s: no timings specified\n", of_node_full_name(np));
40		return -EINVAL;
41	}
42
43	if (index == OF_USE_NATIVE_MODE)
44		index = disp->native_mode;
45
46	ret = videomode_from_timings(disp, vm, index);
47
48	display_timings_release(disp);
49
50	return ret;
51}
52EXPORT_SYMBOL_GPL(of_get_videomode);