diff options
author | Bryan Wu <bryan.wu@analog.com> | 2007-10-21 12:02:14 -0400 |
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committer | Bryan Wu <bryan.wu@analog.com> | 2007-10-21 12:02:14 -0400 |
commit | 452af71f36685c932a5cce540a48c1818df6533f (patch) | |
tree | c466051e5be2b193c6fe41afc5335011dce1f6ea /arch/blackfin/kernel | |
parent | 780431e397c82df7e20ee17536b97a08f97ef8ba (diff) |
Blackfin arch: dma add some API and cleanup bf54x DMA definition
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r-- | arch/blackfin/kernel/bfin_dma_5xx.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c index e19164fb4cd1..503eef4c7fec 100644 --- a/arch/blackfin/kernel/bfin_dma_5xx.c +++ b/arch/blackfin/kernel/bfin_dma_5xx.c | |||
@@ -420,6 +420,32 @@ unsigned short get_dma_curr_ycount(unsigned int channel) | |||
420 | } | 420 | } |
421 | EXPORT_SYMBOL(get_dma_curr_ycount); | 421 | EXPORT_SYMBOL(get_dma_curr_ycount); |
422 | 422 | ||
423 | unsigned long get_dma_next_desc_ptr(unsigned int channel) | ||
424 | { | ||
425 | BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE | ||
426 | && channel < MAX_BLACKFIN_DMA_CHANNEL)); | ||
427 | |||
428 | return dma_ch[channel].regs->next_desc_ptr; | ||
429 | } | ||
430 | EXPORT_SYMBOL(get_dma_next_desc_ptr); | ||
431 | |||
432 | unsigned long get_dma_curr_desc_ptr(unsigned int channel) | ||
433 | { | ||
434 | BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE | ||
435 | && channel < MAX_BLACKFIN_DMA_CHANNEL)); | ||
436 | |||
437 | return dma_ch[channel].regs->curr_desc_ptr; | ||
438 | } | ||
439 | |||
440 | unsigned long get_dma_curr_addr(unsigned int channel) | ||
441 | { | ||
442 | BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE | ||
443 | && channel < MAX_BLACKFIN_DMA_CHANNEL)); | ||
444 | |||
445 | return dma_ch[channel].regs->curr_addr_ptr; | ||
446 | } | ||
447 | EXPORT_SYMBOL(get_dma_curr_addr); | ||
448 | |||
423 | static void *__dma_memcpy(void *dest, const void *src, size_t size) | 449 | static void *__dma_memcpy(void *dest, const void *src, size_t size) |
424 | { | 450 | { |
425 | int direction; /* 1 - address decrease, 0 - address increase */ | 451 | int direction; /* 1 - address decrease, 0 - address increase */ |