Blackfin arch: add set_dma_curr_addr DMA API to support sound driver recording function
Signed-off-by: Roy Huang <roy.huang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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@ -345,6 +345,16 @@ void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg)
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}
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EXPORT_SYMBOL(set_dma_sg);
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void set_dma_curr_addr(unsigned int channel, unsigned long addr)
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{
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BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
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&& channel < MAX_BLACKFIN_DMA_CHANNEL));
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dma_ch[channel].regs->curr_addr_ptr = addr;
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SSYNC();
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}
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EXPORT_SYMBOL(set_dma_curr_addr);
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/*------------------------------------------------------------------------------
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* Get the DMA status of a specific DMA channel from the system.
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*-----------------------------------------------------------------------------*/
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@ -159,6 +159,7 @@ void set_dma_y_modify(unsigned int channel, short y_modify);
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void set_dma_config(unsigned int channel, unsigned short config);
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unsigned short set_bfin_dma_config(char direction, char flow_mode,
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char intr_mode, char dma_mode, char width);
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void set_dma_curr_addr(unsigned int channel, unsigned long addr);
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/* get curr status for polling */
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unsigned short get_dma_curr_irqstat(unsigned int channel);
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