Blackfin arch: dma add some API and cleanup bf54x DMA definition

Signed-off-by: Bryan Wu <bryan.wu@analog.com>

2 files changed, 27 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 */
diff --git a/arch/blackfin/mach-bf548/dma.c b/arch/blackfin/mach-bf548/dma.c
index a8184113be48..957bf1366eff 100644
--- a/arch/blackfin/mach-bf548/dma.c
+++ b/arch/blackfin/mach-bf548/dma.c
@@ -64,6 +64,7 @@
         (struct dma_register *) MDMA_D3_NEXT_DESC_PTR,
         (struct dma_register *) MDMA_S3_NEXT_DESC_PTR,
 };
+EXPORT_SYMBOL(base_addr);
 
 int channel2irq(unsigned int channel)
 {