Commit 1d945e2b authored by Roy Huang's avatar Roy Huang Committed by Bryan Wu
Browse files

Blackfin arch: add set_dma_curr_addr DMA API to support sound driver recording function 



Signed-off-by: default avatarRoy Huang <roy.huang@analog.com>
Signed-off-by: default avatarBryan Wu <bryan.wu@analog.com>
parent 518039bc

arch/blackfin/kernel/bfin_dma_5xx.c

+10 −0
Original line number Diff line number Diff line
@@ -345,6 +345,16 @@ void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg) 
}

EXPORT_SYMBOL(set_dma_sg);



void set_dma_curr_addr(unsigned int channel, unsigned long addr)

{

	BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE

	       && channel < MAX_BLACKFIN_DMA_CHANNEL));



	dma_ch[channel].regs->curr_addr_ptr = addr;

	SSYNC();

}

EXPORT_SYMBOL(set_dma_curr_addr);



/*------------------------------------------------------------------------------

 *	Get the DMA status of a specific DMA channel from the system.

 *-----------------------------------------------------------------------------*/

include/asm-blackfin/dma.h

+1 −0
Original line number Diff line number Diff line
@@ -159,6 +159,7 @@ void set_dma_y_modify(unsigned int channel, short y_modify); 
void set_dma_config(unsigned int channel, unsigned short config);

unsigned short set_bfin_dma_config(char direction, char flow_mode,

				   char intr_mode, char dma_mode, char width);

void set_dma_curr_addr(unsigned int channel, unsigned long addr);



/* get curr status for polling */

unsigned short get_dma_curr_irqstat(unsigned int channel);

CRA Git | Maintained and supported by SUSTech CRA and CCSE