/* $NetBSD: display_timing.c,v 1.1 2017/06/03 14:48:02 jmcneill Exp $ */
/*-
* Copyright (c) 2017 Jared McNeill <
[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: display_timing.c,v 1.1 2017/06/03 14:48:02 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kmem.h>
#include <sys/bus.h>
#include <dev/fdt/fdtvar.h>
#include <dev/fdt/display_timing.h>
#define GETPROP(n, v) \
of_getprop_uint32(phandle, (n), (v))
int
display_timing_parse(int phandle, struct display_timing *timing)
{
if (GETPROP("clock-frequency", &timing->clock_freq) ||
GETPROP("hactive", &timing->hactive) ||
GETPROP("vactive", &timing->vactive) ||
GETPROP("hfront-porch", &timing->hfront_porch) ||
GETPROP("hback-porch", &timing->hback_porch) ||
GETPROP("hsync-len", &timing->hsync_len) ||
GETPROP("vfront-porch", &timing->vfront_porch) ||
GETPROP("vback-porch", &timing->vback_porch) ||
GETPROP("vsync-len", &timing->vsync_len))
return EINVAL;
return 0;
}
