drivers/video/videomode.c

   1 /*
   2  * generic display timing functions
   3  *
   4  * Copyright (c) 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>, Pengutronix
   5  *
   6  * This file is released under the GPLv2
   7  */
   8
   9 #include <linux/errno.h>
  10 #include <linux/export.h>
  11 #include <video/display_timing.h>
  12 #include <video/videomode.h>
  13
  14 void videomode_from_timing(const struct display_timing *dt,
  15                           struct videomode *vm)
  16 {
  17         vm->pixelclock = dt->pixelclock.typ;
  18         vm->hactive = dt->hactive.typ;
  19         vm->hfront_porch = dt->hfront_porch.typ;
  20         vm->hback_porch = dt->hback_porch.typ;
  21         vm->hsync_len = dt->hsync_len.typ;
  22
  23         vm->vactive = dt->vactive.typ;
  24         vm->vfront_porch = dt->vfront_porch.typ;
  25         vm->vback_porch = dt->vback_porch.typ;
  26         vm->vsync_len = dt->vsync_len.typ;
  27
  28         vm->flags = dt->flags;
  29 }
  30 EXPORT_SYMBOL_GPL(videomode_from_timing);
  31
  32 int videomode_from_timings(const struct display_timings *disp,
  33                           struct videomode *vm, unsigned int index)
  34 {
  35         struct display_timing *dt;
  36
  37         dt = display_timings_get(disp, index);
  38         if (!dt)
  39                 return -EINVAL;
  40
  41         videomode_from_timing(dt, vm);
  42
  43         return 0;
  44 }
  45 EXPORT_SYMBOL_GPL(videomode_from_timings);