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cnl: dma: refine dma interrupt processing on cnl 

On cnl, all the dma share the same interrupt pin, so
all the dma controller need to be checked in interrupt
function.
This commit is contained in:
Rander Wang 2018-03-12 14:25:31 +08:00 committed by Liam Girdwood
parent c757d95c1c
commit cc421f6716
1 changed files with 26 additions and 0 deletions
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26
src/drivers/dw-dma.c
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@ -1138,6 +1138,28 @@ static void dw_dma_irq_handler(void *data)
}
}
#if defined CONFIG_CANNONLAKE
/*All the dma share the same interrupt on CNL, so check each dma*/
/*controller when interrupt coming, then do the work */
static void dw_dma_irq_cnl(void *data)
{
struct dma *dma;
uint32_t status_intr;
/*check interrupt status of DMA controller 0*/
dma = dma_get(DMA_GP_LP_DMAC0);
status_intr = dw_read(dma, DW_INTR_STATUS);
if (status_intr)
dw_dma_irq_handler(dma);
/*check interrupt status of DMA controller 1*/
dma = dma_get(DMA_GP_LP_DMAC1);
status_intr = dw_read(dma, DW_INTR_STATUS);
if (status_intr)
dw_dma_irq_handler(dma);
}
#endif
static int dw_dma_probe(struct dma *dma)
{
struct dma_pdata *dw_pdata;
@ -1160,7 +1182,11 @@ static int dw_dma_probe(struct dma *dma)
}
/* register our IRQ handler */
#if defined CONFIG_CANNONLAKE
interrupt_register(dma_irq(dma), dw_dma_irq_cnl, dma);
#else
interrupt_register(dma_irq(dma), dw_dma_irq_handler, dma);
#endif
interrupt_enable(dma_irq(dma));
return 0;