diff options
Diffstat (limited to 'arch/arm/kernel/dma.h')
| -rw-r--r-- | arch/arm/kernel/dma.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/kernel/dma.h b/arch/arm/kernel/dma.h index e4c72c6af..33db3b03b 100644 --- a/arch/arm/kernel/dma.h +++ b/arch/arm/kernel/dma.h @@ -15,6 +15,7 @@ typedef struct { unsigned int active:1; /* Transfer active */ unsigned int invalid:1; /* Address/Count changed */ dmamode_t dma_mode; /* DMA mode */ + int speed; /* DMA speed */ unsigned int lock; /* Device is allocated */ const char *device_id; /* Device name */ @@ -63,6 +64,15 @@ void arch_disable_dma(dmach_t channel, dma_t *dma); */ int arch_get_dma_residue(dmach_t channel, dma_t *dma); +/* Prototype: int arch_set_dma_speed(channel, dma, cycle) + * Purpose : Convert a cycle time to a register setting + * Params : channel - DMA channel number + * : dma - DMA structure for channel + * : cycle - cycle time in NS + * Returns : setting for 'dma->speed' + */ +int arch_set_dma_speed(dmach_t channel, dma_t *dma, int cycle); + /* Prototype: void arch_dma_init(dma) * Purpose : Initialise architecture specific DMA * Params : dma - pointer to array of DMA structures |