xref: /linux/arch/arm/include/asm/hardware/memc.h (revision bb9707077b4ee5f77bc9939b057ff8a0d410296f)
1 /*
2  *  arch/arm/include/asm/hardware/memc.h
3  *
4  *  Copyright (C) Russell King.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 #define VDMA_ALIGNMENT	PAGE_SIZE
11 #define VDMA_XFERSIZE	16
12 #define VDMA_INIT	0
13 #define VDMA_START	1
14 #define VDMA_END	2
15 
16 #ifndef __ASSEMBLY__
17 extern void memc_write(unsigned int reg, unsigned long val);
18 
19 #define video_set_dma(start,end,offset)				\
20 do {								\
21 	memc_write (VDMA_START, (start >> 2));			\
22 	memc_write (VDMA_END, (end - VDMA_XFERSIZE) >> 2);	\
23 	memc_write (VDMA_INIT, (offset >> 2));			\
24 } while (0)
25 
26 #endif
27