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[PATCH] Add sysfs entry to disable framebuffer access

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This commit is contained in:
Matthew Garrett 2006-01-09 20:53:01 -08:00 • committed by Linus Torvalds
parent c35dba6017
commit 30420f8f46
1 changed files with 23 additions and 0 deletions
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23
drivers/video/fbsysfs.c
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@ -492,6 +492,28 @@ static ssize_t show_name(struct class_device *class_device, char *buf)
return snprintf(buf, PAGE_SIZE, "%s\n", fb_info->fix.id); return snprintf(buf, PAGE_SIZE, "%s\n", fb_info->fix.id);
} }
static ssize_t store_fbstate(struct class_device *class_device,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
u32 state;
char *last = NULL;
state = simple_strtoul(buf, &last, 0);
acquire_console_sem();
fb_set_suspend(fb_info, (int)state);
release_console_sem();
return count;
}
static ssize_t show_fbstate(struct class_device *class_device, char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->state);
}
static struct class_device_attribute class_device_attrs[] = { static struct class_device_attribute class_device_attrs[] = {
__ATTR(bits_per_pixel, S_IRUGO|S_IWUSR, show_bpp, store_bpp), __ATTR(bits_per_pixel, S_IRUGO|S_IWUSR, show_bpp, store_bpp),
__ATTR(blank, S_IRUGO|S_IWUSR, show_blank, store_blank), __ATTR(blank, S_IRUGO|S_IWUSR, show_blank, store_blank),
@ -507,6 +529,7 @@ static struct class_device_attribute class_device_attrs[] = {
__ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
__ATTR(con_rotate, S_IRUGO|S_IWUSR, show_con_rotate, store_con_rotate), __ATTR(con_rotate, S_IRUGO|S_IWUSR, show_con_rotate, store_con_rotate),
__ATTR(con_rotate_all, S_IWUSR, NULL, store_con_rotate_all), __ATTR(con_rotate_all, S_IWUSR, NULL, store_con_rotate_all),
__ATTR(state, S_IRUGO|S_IWUSR, show_fbstate, store_fbstate),
}; };
int fb_init_class_device(struct fb_info *fb_info) int fb_init_class_device(struct fb_info *fb_info)