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authorBryan Wu <bryan.wu@analog.com>2007-10-22 00:02:14 +0800
committerBryan Wu <bryan.wu@analog.com>2007-10-22 00:02:14 +0800
commit452af71f36685c932a5cce540a48c1818df6533f (patch)
treec466051e5be2b193c6fe41afc5335011dce1f6ea /arch/blackfin/kernel/bfin_dma_5xx.c
parentBlackfin arch: cleanup and promote the general purpose timers api to a core blackfin component (diff)
downloadlinux-dev-452af71f36685c932a5cce540a48c1818df6533f.tar.xz
linux-dev-452af71f36685c932a5cce540a48c1818df6533f.zip
Blackfin arch: dma add some API and cleanup bf54x DMA definition
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to '')
-rw-r--r--arch/blackfin/kernel/bfin_dma_5xx.c26
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)
}
EXPORT_SYMBOL(get_dma_curr_ycount);
+unsigned long get_dma_next_desc_ptr(unsigned int channel)
+{
+ BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+ && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+ return dma_ch[channel].regs->next_desc_ptr;
+}
+EXPORT_SYMBOL(get_dma_next_desc_ptr);
+
+unsigned long get_dma_curr_desc_ptr(unsigned int channel)
+{
+ BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+ && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+ return dma_ch[channel].regs->curr_desc_ptr;
+}
+
+unsigned long get_dma_curr_addr(unsigned int channel)
+{
+ BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+ && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+ return dma_ch[channel].regs->curr_addr_ptr;
+}
+EXPORT_SYMBOL(get_dma_curr_addr);
+
static void *__dma_memcpy(void *dest, const void *src, size_t size)
{
int direction; /* 1 - address decrease, 0 - address increase */