diff options
Diffstat (limited to 'include/asm-sh/cpu-sh3')
| -rw-r--r-- | include/asm-sh/cpu-sh3/dma.h | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/include/asm-sh/cpu-sh3/dma.h b/include/asm-sh/cpu-sh3/dma.h index b972e715f9ee..954801b46022 100644 --- a/include/asm-sh/cpu-sh3/dma.h +++ b/include/asm-sh/cpu-sh3/dma.h @@ -3,5 +3,34 @@ #define SH_DMAC_BASE 0xa4000020 -#endif /* __ASM_CPU_SH3_DMA_H */ +/* Definitions for the SuperH DMAC */ +#define TM_BURST 0x00000020 +#define TS_8 0x00000000 +#define TS_16 0x00000008 +#define TS_32 0x00000010 +#define TS_128 0x00000018 + +#define CHCR_TS_MASK 0x18 +#define CHCR_TS_SHIFT 3 + +#define DMAOR_INIT DMAOR_DME +/* + * The SuperH DMAC supports a number of transmit sizes, we list them here, + * with their respective values as they appear in the CHCR registers. + */ +enum { + XMIT_SZ_8BIT, + XMIT_SZ_16BIT, + XMIT_SZ_32BIT, + XMIT_SZ_128BIT, +}; + +static unsigned int ts_shift[] __attribute__ ((used)) = { + [XMIT_SZ_8BIT] = 0, + [XMIT_SZ_16BIT] = 1, + [XMIT_SZ_32BIT] = 2, + [XMIT_SZ_128BIT] = 4, +}; + +#endif /* __ASM_CPU_SH3_DMA_H */ |