diff options
Diffstat (limited to 'drivers/dma/qcom/hidma_ll.c')
| -rw-r--r-- | drivers/dma/qcom/hidma_ll.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/dma/qcom/hidma_ll.c b/drivers/dma/qcom/hidma_ll.c index c3a66c9b0ab7..132d29eb9a63 100644 --- a/drivers/dma/qcom/hidma_ll.c +++ b/drivers/dma/qcom/hidma_ll.c @@ -680,17 +680,36 @@ int hidma_ll_setup(struct hidma_lldev *lldev) writel(HIDMA_EVRE_SIZE * nr_tres, lldev->evca + HIDMA_EVCA_RING_LEN_REG); - /* support IRQ only for now */ + /* configure interrupts */ + hidma_ll_setup_irq(lldev, lldev->msi_support); + + rc = hidma_ll_enable(lldev); + if (rc) + return rc; + + return rc; +} + +void hidma_ll_setup_irq(struct hidma_lldev *lldev, bool msi) +{ + u32 val; + + lldev->msi_support = msi; + + /* disable interrupts again after reset */ + writel(0, lldev->evca + HIDMA_EVCA_IRQ_CLR_REG); + writel(0, lldev->evca + HIDMA_EVCA_IRQ_EN_REG); + + /* support IRQ by default */ val = readl(lldev->evca + HIDMA_EVCA_INTCTRL_REG); val &= ~0xF; - val |= 0x1; + if (!lldev->msi_support) + val = val | 0x1; writel(val, lldev->evca + HIDMA_EVCA_INTCTRL_REG); /* clear all pending interrupts and enable them */ writel(ENABLE_IRQS, lldev->evca + HIDMA_EVCA_IRQ_CLR_REG); writel(ENABLE_IRQS, lldev->evca + HIDMA_EVCA_IRQ_EN_REG); - - return hidma_ll_enable(lldev); } struct hidma_lldev *hidma_ll_init(struct device *dev, u32 nr_tres, |