1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * generic display timing functions
4  *
5  * Copyright (c) 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>, Pengutronix
6  */
7 
8 #include <linux/errno.h>
9 #include <linux/export.h>
10 #include <video/display_timing.h>
11 #include <video/videomode.h>
12 
videomode_from_timing(const struct display_timing * dt,struct videomode * vm)13 void videomode_from_timing(const struct display_timing *dt,
14 			  struct videomode *vm)
15 {
16 	vm->pixelclock = dt->pixelclock.typ;
17 	vm->hactive = dt->hactive.typ;
18 	vm->hfront_porch = dt->hfront_porch.typ;
19 	vm->hback_porch = dt->hback_porch.typ;
20 	vm->hsync_len = dt->hsync_len.typ;
21 
22 	vm->vactive = dt->vactive.typ;
23 	vm->vfront_porch = dt->vfront_porch.typ;
24 	vm->vback_porch = dt->vback_porch.typ;
25 	vm->vsync_len = dt->vsync_len.typ;
26 
27 	vm->flags = dt->flags;
28 }
29 EXPORT_SYMBOL_GPL(videomode_from_timing);
30 
videomode_from_timings(const struct display_timings * disp,struct videomode * vm,unsigned int index)31 int videomode_from_timings(const struct display_timings *disp,
32 			  struct videomode *vm, unsigned int index)
33 {
34 	struct display_timing *dt;
35 
36 	dt = display_timings_get(disp, index);
37 	if (!dt)
38 		return -EINVAL;
39 
40 	videomode_from_timing(dt, vm);
41 
42 	return 0;
43 }
44 EXPORT_SYMBOL_GPL(videomode_from_timings);
45