drivers/video/videomode.c

   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
  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
  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);