memc.h (550B)
1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * arch/arm/include/asm/hardware/memc.h 4 * 5 * Copyright (C) Russell King. 6 */ 7#define VDMA_ALIGNMENT PAGE_SIZE 8#define VDMA_XFERSIZE 16 9#define VDMA_INIT 0 10#define VDMA_START 1 11#define VDMA_END 2 12 13#ifndef __ASSEMBLY__ 14extern void memc_write(unsigned int reg, unsigned long val); 15 16#define video_set_dma(start,end,offset) \ 17do { \ 18 memc_write (VDMA_START, (start >> 2)); \ 19 memc_write (VDMA_END, (end - VDMA_XFERSIZE) >> 2); \ 20 memc_write (VDMA_INIT, (offset >> 2)); \ 21} while (0) 22 23#endif