[Libdlo] dlfb 0.2rc2 (udlfb)

[Roberto De Ioris]

On Thu, 2009-05-28 at 00:11 -0700, Greg KH wrote:

> 
> Ah, it's when the monitor goes into "sleep" mode, and then I plug it in,
> we can't seem to wake it up.


I can easy implement the change-resolution on the fly (using fbset) in
which i can call the edid parser. Do you think its a good solution ?

> 
> Also, where can I get the source for con2fbmap?  I see it's part of the
> fbset debian package, but that's not the distro I use these days.


This is the code:


#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <linux/fb.h>

#define DEFAULT_FRAMEBUFFER     "/dev/fb0"
#define DEFAULT_FRAMEBUFFER_DEVFS       "/dev/fb/0"

const char *programname;

void Usage(void)
{
    fprintf(stderr, "\nUsage: %s console [framebuffer]\n\n",
programname);
    exit(1);
}

int main(int argc, char *argv[])
{
    int do_write = 0;
    char *fbpath; /* any frame buffer will do */
    int fd;
    struct fb_con2fbmap map;

    programname = argv[0];
    switch (argc) {
        case 3:
            do_write = 1;
            map.framebuffer = atoi(argv[2]);
        case 2:
            map.console = atoi(argv[1]);
            break;
        default:
            Usage();
    }

    if (access("/dev/.devfsd", F_OK) == 0)  /* devfs detected */
        fbpath = DEFAULT_FRAMEBUFFER_DEVFS;
    else
        fbpath = DEFAULT_FRAMEBUFFER;

    if ((fd = open(fbpath, O_RDONLY)) == -1) {
        fprintf(stderr, "open %s: %s\n", fbpath, strerror(errno));
        exit(1);
    }
    if (do_write) {
        if (ioctl(fd, FBIOPUT_CON2FBMAP, &map)) {
            fprintf(stderr, "ioctl FBIOPUT_CON2FBMAP: %s\n",
strerror(errno));
            exit(1);
        }
    } else {
        if (ioctl(fd, FBIOGET_CON2FBMAP, &map)) {
            fprintf(stderr, "ioctl FBIOGET_CON2FBMAP: %s\n",
strerror(errno));
            exit(1);
        }
        printf("console %d is mapped to framebuffer %d\n", map.console,
               map.framebuffer);
    }
    close(fd);
    exit(0);
}


> 
> thanks,
> 
> greg k-h
-- 
Roberto De Ioris
http://unbit.it
JID: roberto at jabber.unbit.it