- 根目录:
- arch
- mips
- include
- asm
- mach-rc32434
- dma_v.h
#ifndef _ASM_RC32434_DMA_V_H_
#define _ASM_RC32434_DMA_V_H_
#include <asm/mach-rc32434/dma.h>
#include <asm/mach-rc32434/rc32434.h>
#define DMA_CHAN_OFFSET 0x14
#define IS_DMA_USED(X) (((X) & \
(DMA_DESC_FINI | DMA_DESC_DONE | DMA_DESC_TERM)) \
!= 0)
#define DMA_COUNT(count) ((count) & DMA_DESC_COUNT_MSK)
#define DMA_HALT_TIMEOUT 500
static inline int rc32434_halt_dma(struct dma_reg *ch)
{
int timeout = 1;
if (__raw_readl(&ch->dmac) & DMA_CHAN_RUN_BIT) {
__raw_writel(0, &ch->dmac);
for (timeout = DMA_HALT_TIMEOUT; timeout > 0; timeout--) {
if (__raw_readl(&ch->dmas) & DMA_STAT_HALT) {
__raw_writel(0, &ch->dmas);
break;
}
}
}
return timeout ? 0 : 1;
}
static inline void rc32434_start_dma(struct dma_reg *ch, u32 dma_addr)
{
__raw_writel(0, &ch->dmandptr);
__raw_writel(dma_addr, &ch->dmadptr);
}
static inline void rc32434_chain_dma(struct dma_reg *ch, u32 dma_addr)
{
__raw_writel(dma_addr, &ch->dmandptr);
}
#endif
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52