From 09aaf268eb1d22eee690d26a913f660e2081597f Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Tue, 8 May 2007 00:39:03 -0700 Subject: fbdev: add fb_read/fb_write functions for framebuffers in system RAM The functions fb_read() and fb_write in fbmem.c assume that the framebuffer is in IO memory. However, we have 3 drivers (hecubafb, arcfb, and vfb) where the framebuffer is allocated from system RAM (via vmalloc). Using __raw_read/__raw_write (fb_readl/fb_writel) for these drivers is illegal, especially in other platforms. Create file read and write methods for these types of drivers. These are named fb_sys_read() and fb_sys_write(). Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/fb.h b/include/linux/fb.h index acb6ddb68fa2..70d154a02c5c 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -903,6 +903,10 @@ extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image); extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect); extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area); extern void sys_imageblit(struct fb_info *info, const struct fb_image *image); +extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf, + size_t count, loff_t *ppos); +extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, + size_t count, loff_t *ppos); /* drivers/video/fbmem.c */ extern int register_framebuffer(struct fb_info *fb_info); -- cgit v1.2.3