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__ 14 extern void memc_write(unsigned int reg, unsigned long val); 15 16 #define video_set_dma(start,end,offset) \ 17 do { \ 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 24