dmaengine: qcom_hidma: disable/enable IRQs on pause/resume

Once the channels are stopped, disable interrupts to make sure no new
HW interaction can happen.

Similarly, re-enable the interrupts only if we know that channel is
operational again.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/dma/qcom/hidma_ll.c b/drivers/dma/qcom/hidma_ll.c
index 6645bdf0d151..1530a661518d 100644
--- a/drivers/dma/qcom/hidma_ll.c
+++ b/drivers/dma/qcom/hidma_ll.c
@@ -499,6 +499,9 @@ int hidma_ll_enable(struct hidma_lldev *lldev)
         lldev->trch_state = HIDMA_CH_ENABLED;
         lldev->evch_state = HIDMA_CH_ENABLED;
 
+        /* enable irqs */
+        writel(ENABLE_IRQS, lldev->evca + HIDMA_EVCA_IRQ_EN_REG);
+
         return 0;
 }
 
@@ -596,6 +599,9 @@ int hidma_ll_disable(struct hidma_lldev *lldev)
 
         lldev->trch_state = HIDMA_CH_SUSPENDED;
         lldev->evch_state = HIDMA_CH_SUSPENDED;
+
+        /* disable interrupts */
+        writel(0, lldev->evca + HIDMA_EVCA_IRQ_EN_REG);
         return 0;
 }