diff options
| author | jmcneill <jmcneill@NetBSD.org> | 2017-06-03 14:48:02 +0000 |
|---|---|---|
| committer | jmcneill <jmcneill@NetBSD.org> | 2017-06-03 14:48:02 +0000 |
| commit | 5ceb9ea24721cf3e1df67758e2dc1880936680d0 (patch) | |
| tree | dd780ee8334eefbacce81fba2c87746f221b3a71 /sys/dev | |
| parent | f80157a267e0526648941566280e8b0318be2c06 (diff) | |
Add helper for parsing display timings.
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/fdt/display_timing.c | 59 | ||||
| -rw-r--r-- | sys/dev/fdt/display_timing.h | 47 | ||||
| -rw-r--r-- | sys/dev/fdt/files.fdt | 5 |
3 files changed, 110 insertions, 1 deletions
diff --git a/sys/dev/fdt/display_timing.c b/sys/dev/fdt/display_timing.c new file mode 100644 index 00000000000..04bb0d6ec2d --- /dev/null +++ b/sys/dev/fdt/display_timing.c @@ -0,0 +1,59 @@ +/* $NetBSD: display_timing.c,v 1.1 2017/06/03 14:48:02 jmcneill Exp $ */ + +/*- + * Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca> + * 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; +} diff --git a/sys/dev/fdt/display_timing.h b/sys/dev/fdt/display_timing.h new file mode 100644 index 00000000000..1e06a01a379 --- /dev/null +++ b/sys/dev/fdt/display_timing.h @@ -0,0 +1,47 @@ +/* $NetBSD: display_timing.h,v 1.1 2017/06/03 14:48:02 jmcneill Exp $ */ + +/*- + * Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca> + * 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. + */ + +#ifndef _FDT_DISPLAY_TIMING_H +#define _FDT_DISPLAY_TIMING_H + +struct display_timing { + /* required */ + u_int clock_freq; + u_int hactive; + u_int vactive; + u_int hfront_porch; + u_int hback_porch; + u_int hsync_len; + u_int vfront_porch; + u_int vback_porch; + u_int vsync_len; +}; + +int display_timing_parse(int, struct display_timing *); + +#endif /* !_FDT_DISPLAY_TIMING_H */ diff --git a/sys/dev/fdt/files.fdt b/sys/dev/fdt/files.fdt index 14aa8dd3be1..3c30db84010 100644 --- a/sys/dev/fdt/files.fdt +++ b/sys/dev/fdt/files.fdt @@ -1,4 +1,4 @@ -# $NetBSD: files.fdt,v 1.15 2017/06/02 15:09:16 jmcneill Exp $ +# $NetBSD: files.fdt,v 1.16 2017/06/03 14:48:03 jmcneill Exp $ include "external/bsd/libfdt/conf/files.libfdt" @@ -38,3 +38,6 @@ file dev/fdt/fdt_pinctrl.c fdtbus device cpus { } : fdtbus attach cpus at fdt file dev/fdt/cpus.c cpus + +define fdt_display_timing +file dev/fdt/display_timing.c fdt_display_timing |
