diff options
Diffstat (limited to 'arch/arm/include/asm/hardware/memc.h')
| -rw-r--r-- | arch/arm/include/asm/hardware/memc.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/include/asm/hardware/memc.h b/arch/arm/include/asm/hardware/memc.h new file mode 100644 index 000000000..1d4ebe0a9 --- /dev/null +++ b/arch/arm/include/asm/hardware/memc.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * arch/arm/include/asm/hardware/memc.h + * + * Copyright (C) Russell King. + */ +#define VDMA_ALIGNMENT PAGE_SIZE +#define VDMA_XFERSIZE 16 +#define VDMA_INIT 0 +#define VDMA_START 1 +#define VDMA_END 2 + +#ifndef __ASSEMBLY__ +extern void memc_write(unsigned int reg, unsigned long val); + +#define video_set_dma(start,end,offset) \ +do { \ + memc_write (VDMA_START, (start >> 2)); \ + memc_write (VDMA_END, (end - VDMA_XFERSIZE) >> 2); \ + memc_write (VDMA_INIT, (offset >> 2)); \ +} while (0) + +#endif |