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/*
* picorestore - clean up after an omapfb program crash
*
* Copyright (c) Gražvydas "notaz" Ignotas, 2010
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the organization nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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 <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/fb.h>
#include <linux/omapfb.h>
#include <linux/kd.h>
int main()
{
struct fb_var_screeninfo fbvar;
struct omapfb_plane_info pi;
struct omapfb_mem_info mi;
int ret, fbdev, kbdfd;
fbdev = open("/dev/fb0", O_RDWR);
if (fbdev == -1) {
perror("open fb0");
goto end_fb0;
}
ret = ioctl(fbdev, FBIOGET_VSCREENINFO, &fbvar);
if (ret == -1) {
perror("FBIOGET_VSCREENINFO ioctl");
goto end_fb0;
}
if (fbvar.yoffset != 0) {
printf("fixing yoffset.. ");
fbvar.yoffset = 0;
ret = ioctl(fbdev, FBIOPAN_DISPLAY, &fbvar);
if (ret < 0)
perror("ioctl FBIOPAN_DISPLAY");
else
printf("ok\n");
}
end_fb0:
if (fbdev >= 0)
close(fbdev);
fbdev = open("/dev/fb1", O_RDWR);
if (fbdev == -1) {
perror("open fb1");
goto end_fb1;
}
ret = ioctl(fbdev, OMAPFB_QUERY_PLANE, &pi);
ret |= ioctl(fbdev, OMAPFB_QUERY_MEM, &mi);
if (ret != 0)
perror("QUERY_*");
pi.enabled = 0;
ret = ioctl(fbdev, OMAPFB_SETUP_PLANE, &pi);
if (ret != 0)
perror("SETUP_PLANE");
mi.size = 0;
ret = ioctl(fbdev, OMAPFB_SETUP_MEM, &mi);
if (ret != 0)
perror("SETUP_MEM");
end_fb1:
if (fbdev >= 0)
close(fbdev);
kbdfd = open("/dev/tty", O_RDWR);
if (kbdfd == -1) {
perror("open /dev/tty");
return 1;
}
if (ioctl(kbdfd, KDSETMODE, KD_TEXT) == -1)
perror("KDSETMODE KD_TEXT");
close(kbdfd);
return 0;
}
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