include/video/omapvrfb.h

   1 /*
   2  * VRFB Rotation Engine
   3  *
   4  * Copyright (C) 2009 Nokia Corporation
   5  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19  */
  20
  21 #ifndef __OMAP_VRFB_H__
  22 #define __OMAP_VRFB_H__
  23
  24 #define OMAP_VRFB_LINE_LEN 2048
  25
  26 struct vrfb {
  27         u8 context;
  28         void __iomem *vaddr[4];
  29         unsigned long paddr[4];
  30         u16 xres;
  31         u16 yres;
  32         u16 xoffset;
  33         u16 yoffset;
  34         u8 bytespp;
  35         bool yuv_mode;
  36 };
  37
  38 #ifdef CONFIG_OMAP2_VRFB
  39 extern bool omap_vrfb_supported(void);
  40 extern int omap_vrfb_request_ctx(struct vrfb *vrfb);
  41 extern void omap_vrfb_release_ctx(struct vrfb *vrfb);
  42 extern void omap_vrfb_adjust_size(u16 *width, u16 *height,
  43                 u8 bytespp);
  44 extern u32 omap_vrfb_min_phys_size(u16 width, u16 height, u8 bytespp);
  45 extern u16 omap_vrfb_max_height(u32 phys_size, u16 width, u8 bytespp);
  46 extern void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr,
  47                 u16 width, u16 height,
  48                 unsigned bytespp, bool yuv_mode);
  49 extern int omap_vrfb_map_angle(struct vrfb *vrfb, u16 height, u8 rot);
  50 extern void omap_vrfb_restore_context(void);
  51
  52 #else
  53 static inline bool omap_vrfb_supported(void) { return false; }
  54 static inline int omap_vrfb_request_ctx(struct vrfb *vrfb) { return 0; }
  55 static inline void omap_vrfb_release_ctx(struct vrfb *vrfb) {}
  56 static inline void omap_vrfb_adjust_size(u16 *width, u16 *height,
  57                 u8 bytespp) {}
  58 static inline u32 omap_vrfb_min_phys_size(u16 width, u16 height, u8 bytespp)
  59                 { return 0; }
  60 static inline u16 omap_vrfb_max_height(u32 phys_size, u16 width, u8 bytespp)
  61                 { return 0; }
  62 static inline void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr,
  63                 u16 width, u16 height, unsigned bytespp, bool yuv_mode) {}
  64 static inline int omap_vrfb_map_angle(struct vrfb *vrfb, u16 height, u8 rot)
  65                 { return 0; }
  66 static inline void omap_vrfb_restore_context(void) {}
  67 #endif
  68 #endif /* __VRFB_H */