diff options
Diffstat (limited to 'frontend/pandora/picorestore.c')
| -rw-r--r-- | frontend/pandora/picorestore.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/frontend/pandora/picorestore.c b/frontend/pandora/picorestore.c new file mode 100644 index 0000000..77f5720 --- /dev/null +++ b/frontend/pandora/picorestore.c @@ -0,0 +1,109 @@ +/* + * picorestore - clean up after an omapfb program crash + * + * Copyright (c) GraÅžvydas "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; +} |