drivers/video/fbdev/sbuslib.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* sbuslib.h: SBUS fb helper library interfaces */
   3 #ifndef _SBUSLIB_H
   4 #define _SBUSLIB_H
   5
   6 struct device_node;
   7 struct fb_info;
   8 struct fb_var_screeninfo;
   9 struct vm_area_struct;
  10
  11 struct sbus_mmap_map {
  12         unsigned long voff;
  13         unsigned long poff;
  14         unsigned long size;
  15 };
  16
  17 #define SBUS_MMAP_FBSIZE(n) (-n)
  18 #define SBUS_MMAP_EMPTY 0x80000000
  19
  20 extern void sbusfb_fill_var(struct fb_var_screeninfo *var,
  21                             struct device_node *dp, int bpp);
  22 extern int sbusfb_mmap_helper(const struct sbus_mmap_map *map,
  23                               unsigned long physbase, unsigned long fbsize,
  24                               unsigned long iospace,
  25                               struct vm_area_struct *vma);
  26 int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg,
  27                         struct fb_info *info,
  28                         int type, int fb_depth, unsigned long fb_size);
  29 int sbusfb_compat_ioctl(struct fb_info *info, unsigned int cmd,
  30                         unsigned long arg);
  31
  32 /*
  33  * Initialize struct fb_ops for SBUS I/O.
  34  */
  35
  36 #define __FB_DEFAULT_SBUS_OPS_RDWR(__prefix) \
  37         .fb_read        = fb_io_read, \
  38         .fb_write       = fb_io_write
  39
  40 #define __FB_DEFAULT_SBUS_OPS_DRAW(__prefix) \
  41         .fb_fillrect    = cfb_fillrect, \
  42         .fb_copyarea    = cfb_copyarea, \
  43         .fb_imageblit   = cfb_imageblit
  44
  45 #ifdef CONFIG_COMPAT
  46 #define __FB_DEFAULT_SBUS_OPS_IOCTL(__prefix) \
  47         .fb_ioctl               = __prefix ## _sbusfb_ioctl, \
  48         .fb_compat_ioctl        = sbusfb_compat_ioctl
  49 #else
  50 #define __FB_DEFAULT_SBUS_OPS_IOCTL(__prefix) \
  51         .fb_ioctl       = __prefix ## _sbusfb_ioctl
  52 #endif
  53
  54 #define __FB_DEFAULT_SBUS_OPS_MMAP(__prefix) \
  55         .fb_mmap        = __prefix ## _sbusfb_mmap
  56
  57 #define FB_DEFAULT_SBUS_OPS(__prefix) \
  58         __FB_DEFAULT_SBUS_OPS_RDWR(__prefix), \
  59         __FB_DEFAULT_SBUS_OPS_DRAW(__prefix), \
  60         __FB_DEFAULT_SBUS_OPS_IOCTL(__prefix), \
  61         __FB_DEFAULT_SBUS_OPS_MMAP(__prefix)
  62
  63 #endif /* _SBUSLIB_H */