arch/arm/plat-omap/include/plat/vram.h

   1 /*
   2  * VRAM manager for OMAP
   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_VRAM_H__
  22 #define __OMAP_VRAM_H__
  23
  24 #include <linux/types.h>
  25
  26 #define OMAP_VRAM_MEMTYPE_SDRAM         0
  27 #define OMAP_VRAM_MEMTYPE_SRAM          1
  28 #define OMAP_VRAM_MEMTYPE_MAX           1
  29
  30 extern int omap_vram_add_region(unsigned long paddr, size_t size);
  31 extern int omap_vram_free(unsigned long paddr, size_t size);
  32 extern int omap_vram_alloc(int mtype, size_t size, unsigned long *paddr);
  33 extern int omap_vram_reserve(unsigned long paddr, size_t size);
  34 extern void omap_vram_get_info(unsigned long *vram, unsigned long *free_vram,
  35                 unsigned long *largest_free_block);
  36
  37 #ifdef CONFIG_OMAP2_VRAM
  38 extern void omap_vram_set_sdram_vram(u32 size, u32 start);
  39 extern void omap_vram_set_sram_vram(u32 size, u32 start);
  40
  41 extern void omap_vram_reserve_sdram_memblock(void);
  42 extern unsigned long omap_vram_reserve_sram(unsigned long sram_pstart,
  43                                             unsigned long sram_vstart,
  44                                             unsigned long sram_size,
  45                                             unsigned long pstart_avail,
  46                                             unsigned long size_avail);
  47 #else
  48 static inline void omap_vram_set_sdram_vram(u32 size, u32 start) { }
  49 static inline void omap_vram_set_sram_vram(u32 size, u32 start) { }
  50
  51 static inline void omap_vram_reserve_sdram_memblock(void) { }
  52 static inline unsigned long omap_vram_reserve_sram(unsigned long sram_pstart,
  53                                             unsigned long sram_vstart,
  54                                             unsigned long sram_size,
  55                                             unsigned long pstart_avail,
  56                                             unsigned long size_avail)
  57 {
  58         return 0;
  59 }
  60 #endif
  61
  62 #endif