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Commit ff5ae12d authored by Steven Miao's avatar Steven Miao
Browse files

Revert "blackfin: dma: current count mmr is read only" 



curr_x_count/curr_y_count need to be cleared here, keep this workaround

This reverts commit dfb02f95f5430e47d0c49adbc4469d08eea38b94.

Signed-off-by: default avatarSteven Miao <realmz6@gmail.com>
parent bc4fef6f

arch/blackfin/include/asm/dma.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -316,6 +316,8 @@ static inline void disable_dma(unsigned int channel) 
}

}

static inline void enable_dma(unsigned int channel)

static inline void enable_dma(unsigned int channel)

{

{

	dma_ch[channel].regs->curr_x_count = 0;

	dma_ch[channel].regs->curr_y_count = 0;

	dma_ch[channel].regs->cfg |= DMAEN;

	dma_ch[channel].regs->cfg |= DMAEN;

}

}

int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data);

int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data);