asm/hardware/memc.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  *  arch/arm/include/asm/hardware/memc.h
0004  *
0005  *  Copyright (C) Russell King.
0006  */
0007 #define VDMA_ALIGNMENT  PAGE_SIZE
0008 #define VDMA_XFERSIZE   16
0009 #define VDMA_INIT   0
0010 #define VDMA_START  1
0011 #define VDMA_END    2
0012
0013 #ifndef __ASSEMBLY__
0014 extern void memc_write(unsigned int reg, unsigned long val);
0015
0016 #define video_set_dma(start,end,offset)             \
0017 do {                                \
0018     memc_write (VDMA_START, (start >> 2));          \
0019     memc_write (VDMA_END, (end - VDMA_XFERSIZE) >> 2);  \
0020     memc_write (VDMA_INIT, (offset >> 2));          \
0021 } while (0)
0022
0023 #endif