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dmaengine: sun6i: Fix the access of the IRQ register 

The IRQ register number is computed, but this number was not used
and the register was the one indexed by the channel index instead.
Then, only the first DMA channel was working.

Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
hifive-unleashed-5.1
Jean-Francois Moine 2016-04-22 08:14:33 +02:00 committed by Vinod Koul
parent f55532a0c0
commit 128fe7e9a0
1 changed files with 2 additions and 2 deletions
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4
drivers/dma/sun6i-dma.c
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@ -381,9 +381,9 @@ static int sun6i_dma_start_desc(struct sun6i_vchan *vchan)
irq_reg = pchan->idx / DMA_IRQ_CHAN_NR;
irq_offset = pchan->idx % DMA_IRQ_CHAN_NR;
irq_val = readl(sdev->base + DMA_IRQ_EN(irq_offset));
irq_val = readl(sdev->base + DMA_IRQ_EN(irq_reg));
irq_val |= DMA_IRQ_QUEUE << (irq_offset * DMA_IRQ_CHAN_WIDTH);
writel(irq_val, sdev->base + DMA_IRQ_EN(irq_offset));
writel(irq_val, sdev->base + DMA_IRQ_EN(irq_reg));
writel(pchan->desc->p_lli, pchan->base + DMA_CHAN_LLI_ADDR);
writel(DMA_CHAN_ENABLE_START, pchan->base + DMA_CHAN_ENABLE);