diff options
| author |   Sinan Kaya <okaya@codeaurora.org> | 2017-03-25 19:04:02 -0400 |
|---|---|---|
| committer |   Vinod Koul <vinod.koul@intel.com> | 2017-03-27 10:43:38 +0530 |
| commit | c3a4528788cf09d709217f21be4b0fc38ada17d0 (patch) | |
| tree | 0ba61ccd3d43873fd5cf266d8915cfc2a0673fe4 /drivers/dma | |
| parent | Linux 4.11-rc1 (diff) | |
| download | linux-dev-c3a4528788cf09d709217f21be4b0fc38ada17d0.tar.xz linux-dev-c3a4528788cf09d709217f21be4b0fc38ada17d0.zip | |
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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/qcom/hidma_ll.c | 6 |
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; } |