LXR linux/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
  13void 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}
  29EXPORT_SYMBOL_GPL(videomode_from_timing);
  30
  31int 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}
  44EXPORT_SYMBOL_GPL(videomode_from_timings);
  45