include/video/adf_fbdev.h

   1 /*
   2  * Copyright (C) 2013 Google, Inc.
   3  *
   4  * This software is licensed under the terms of the GNU General Public
   5  * License version 2, as published by the Free Software Foundation, and
   6  * may be copied, distributed, and modified under those terms.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  */
  14
  15 #ifndef _VIDEO_ADF_FBDEV_H_
  16 #define _VIDEO_ADF_FBDEV_H_
  17
  18 #include <linux/fb.h>
  19 #include <linux/mutex.h>
  20 #include <video/adf.h>
  21
  22 struct adf_fbdev {
  23         struct adf_interface *intf;
  24         struct adf_overlay_engine *eng;
  25         struct fb_info *info;
  26         u32 pseudo_palette[16];
  27
  28         unsigned int refcount;
  29         struct mutex refcount_lock;
  30
  31         struct dma_buf *dma_buf;
  32         u32 offset;
  33         u32 pitch;
  34         void *vaddr;
  35         u32 format;
  36
  37         u16 default_xres_virtual;
  38         u16 default_yres_virtual;
  39         u32 default_format;
  40 };
  41
  42 #if IS_ENABLED(CONFIG_ADF_FBDEV)
  43 void adf_modeinfo_to_fb_videomode(const struct drm_mode_modeinfo *mode,
  44                 struct fb_videomode *vmode);
  45 void adf_modeinfo_from_fb_videomode(const struct fb_videomode *vmode,
  46                 struct drm_mode_modeinfo *mode);
  47
  48 int adf_fbdev_init(struct adf_fbdev *fbdev, struct adf_interface *interface,
  49                 struct adf_overlay_engine *eng,
  50                 u16 xres_virtual, u16 yres_virtual, u32 format,
  51                 struct fb_ops *fbops, const char *fmt, ...);
  52 void adf_fbdev_destroy(struct adf_fbdev *fbdev);
  53
  54 int adf_fbdev_open(struct fb_info *info, int user);
  55 int adf_fbdev_release(struct fb_info *info, int user);
  56 int adf_fbdev_check_var(struct fb_var_screeninfo *var, struct fb_info *info);
  57 int adf_fbdev_set_par(struct fb_info *info);
  58 int adf_fbdev_blank(int blank, struct fb_info *info);
  59 int adf_fbdev_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
  60 int adf_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma);
  61 #else
  62 static inline void adf_modeinfo_to_fb_videomode(const struct drm_mode_modeinfo *mode,
  63                 struct fb_videomode *vmode)
  64 {
  65         WARN_ONCE(1, "%s: CONFIG_ADF_FBDEV is disabled\n", __func__);
  66 }
  67
  68 static inline void adf_modeinfo_from_fb_videomode(const struct fb_videomode *vmode,
  69                 struct drm_mode_modeinfo *mode)
  70 {
  71         WARN_ONCE(1, "%s: CONFIG_ADF_FBDEV is disabled\n", __func__);
  72 }
  73
  74 static inline int adf_fbdev_init(struct adf_fbdev *fbdev,
  75                 struct adf_interface *interface,
  76                 struct adf_overlay_engine *eng,
  77                 u16 xres_virtual, u16 yres_virtual, u32 format,
  78                 struct fb_ops *fbops, const char *fmt, ...)
  79 {
  80         return -ENODEV;
  81 }
  82
  83 static inline void adf_fbdev_destroy(struct adf_fbdev *fbdev) { }
  84
  85 static inline int adf_fbdev_open(struct fb_info *info, int user)
  86 {
  87         return -ENODEV;
  88 }
  89
  90 static inline int adf_fbdev_release(struct fb_info *info, int user)
  91 {
  92         return -ENODEV;
  93 }
  94
  95 static inline int adf_fbdev_check_var(struct fb_var_screeninfo *var,
  96                 struct fb_info *info)
  97 {
  98         return -ENODEV;
  99 }
 100
 101 static inline int adf_fbdev_set_par(struct fb_info *info)
 102 {
 103         return -ENODEV;
 104 }
 105
 106 static inline int adf_fbdev_blank(int blank, struct fb_info *info)
 107 {
 108         return -ENODEV;
 109 }
 110
 111 static inline int adf_fbdev_pan_display(struct fb_var_screeninfo *var,
 112                 struct fb_info *info)
 113 {
 114         return -ENODEV;
 115 }
 116
 117 static inline int adf_fbdev_mmap(struct fb_info *info,
 118                 struct vm_area_struct *vma)
 119 {
 120         return -ENODEV;
 121 }
 122 #endif
 123
 124 #endif /* _VIDEO_ADF_FBDEV_H_ */