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Commit c14e2cfc authored by James Simmons's avatar James Simmons Committed by Linus Torvalds
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[PATCH] Return the line length via sysfs for fbdev 



This small patch returns the stride/line length of the framebuffer via
sysfs.

Signed-off-by: default avatarJames Simmons <jsimmons@infradead.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent d5c5d8fe

drivers/video/fbsysfs.c

+8 −0
Original line number Diff line number Diff line
@@ -242,6 +242,13 @@ static ssize_t show_virtual(struct class_device *class_device, char *buf) 
			fb_info->var.yres_virtual);

}



static ssize_t show_stride(struct class_device *class_device, char *buf)

{

	struct fb_info *fb_info =

		(struct fb_info *)class_get_devdata(class_device);

	return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->fix.line_length);

}



/* Format for cmap is "%02x%c%4x%4x%4x\n" */

/* %02x entry %c transp %4x red %4x blue %4x green \n */

/* 256 rows at 16 chars equals 4096, the normal page size */
@@ -432,6 +439,7 @@ static struct class_device_attribute class_device_attrs[] = { 
	__ATTR(pan, S_IRUGO|S_IWUSR, show_pan, store_pan),

	__ATTR(virtual_size, S_IRUGO|S_IWUSR, show_virtual, store_virtual),

	__ATTR(name, S_IRUGO, show_name, NULL),

	__ATTR(stride, S_IRUGO, show_stride, NULL),

};



int fb_init_class_device(struct fb_info *fb_info)