linux/drivers/video/fbdev/sbuslib.h
Thomas Zimmermann cbe606f304 fbdev/sbus: Add initializer macros and Kconfig tokens for SBUS support
Add macros to initialize struct fb_ops for drivers that support
framebuffers on Sparc's SBUS. Also add a Kconfig token that selects
the necessary helpers.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230806120926.5368-4-tzimmermann@suse.de
2023-08-28 09:43:53 +02:00

64 lines
1.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/* sbuslib.h: SBUS fb helper library interfaces */
#ifndef _SBUSLIB_H
#define _SBUSLIB_H
struct device_node;
struct fb_info;
struct fb_var_screeninfo;
struct vm_area_struct;
struct sbus_mmap_map {
unsigned long voff;
unsigned long poff;
unsigned long size;
};
#define SBUS_MMAP_FBSIZE(n) (-n)
#define SBUS_MMAP_EMPTY 0x80000000
extern void sbusfb_fill_var(struct fb_var_screeninfo *var,
struct device_node *dp, int bpp);
extern int sbusfb_mmap_helper(struct sbus_mmap_map *map,
unsigned long physbase, unsigned long fbsize,
unsigned long iospace,
struct vm_area_struct *vma);
int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg,
struct fb_info *info,
int type, int fb_depth, unsigned long fb_size);
int sbusfb_compat_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg);
/*
* Initialize struct fb_ops for SBUS I/O.
*/
#define __FB_DEFAULT_SBUS_OPS_RDWR(__prefix) \
.fb_read = fb_io_read, \
.fb_write = fb_io_write
#define __FB_DEFAULT_SBUS_OPS_DRAW(__prefix) \
.fb_fillrect = cfb_fillrect, \
.fb_copyarea = cfb_copyarea, \
.fb_imageblit = cfb_imageblit
#ifdef CONFIG_COMPAT
#define __FB_DEFAULT_SBUS_OPS_IOCTL(__prefix) \
.fb_ioctl = __prefix ## _sbusfb_ioctl, \
.fb_compat_ioctl = sbusfb_compat_ioctl
#else
#define __FB_DEFAULT_SBUS_OPS_IOCTL(__prefix) \
.fb_ioctl = __prefix ## _sbusfb_ioctl
#endif
#define __FB_DEFAULT_SBUS_OPS_MMAP(__prefix) \
.fb_mmap = __prefix ## _sbusfb_mmap
#define FB_DEFAULT_SBUS_OPS(__prefix) \
__FB_DEFAULT_SBUS_OPS_RDWR(__prefix), \
__FB_DEFAULT_SBUS_OPS_DRAW(__prefix), \
__FB_DEFAULT_SBUS_OPS_IOCTL(__prefix), \
__FB_DEFAULT_SBUS_OPS_MMAP(__prefix)
#endif /* _SBUSLIB_H */