[PATCH] Add sysfs entry to disable framebuffer access (30420f8f) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/video/fbsysfs.c

+23 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

		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[] = {
		__ATTR(bits_per_pixel, S_IRUGO\|S_IWUSR, show_bpp, store_bpp),
		__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(con_rotate, S_IRUGO\|S_IWUSR, show_con_rotate, store_con_rotate),
		__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)