dmaengine: mmp_tdma: add DMA_PREP_INTERRUPT flag support
add DMA_PREP_INTERRUPT flag to support no_period_wakeup, in which user space app doesn't want audio interrupt to wake up audio threads. Signed-off-by: Qiao Zhou <zhouqiao@marvell.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
parent
e34b731faa
commit
e622226312
|
@ -148,10 +148,16 @@ static void mmp_tdma_chan_set_desc(struct mmp_tdma_chan *tdmac, dma_addr_t phys)
|
|||
tdmac->reg_base + TDCR);
|
||||
}
|
||||
|
||||
static void mmp_tdma_enable_irq(struct mmp_tdma_chan *tdmac, bool enable)
|
||||
{
|
||||
if (enable)
|
||||
writel(TDIMR_COMP, tdmac->reg_base + TDIMR);
|
||||
else
|
||||
writel(0, tdmac->reg_base + TDIMR);
|
||||
}
|
||||
|
||||
static void mmp_tdma_enable_chan(struct mmp_tdma_chan *tdmac)
|
||||
{
|
||||
/* enable irq */
|
||||
writel(TDIMR_COMP, tdmac->reg_base + TDIMR);
|
||||
/* enable dma chan */
|
||||
writel(readl(tdmac->reg_base + TDCR) | TDCR_CHANEN,
|
||||
tdmac->reg_base + TDCR);
|
||||
|
@ -163,9 +169,6 @@ static void mmp_tdma_disable_chan(struct mmp_tdma_chan *tdmac)
|
|||
writel(readl(tdmac->reg_base + TDCR) & ~TDCR_CHANEN,
|
||||
tdmac->reg_base + TDCR);
|
||||
|
||||
/* disable irq */
|
||||
writel(0, tdmac->reg_base + TDIMR);
|
||||
|
||||
tdmac->status = DMA_COMPLETE;
|
||||
}
|
||||
|
||||
|
@ -434,6 +437,10 @@ static struct dma_async_tx_descriptor *mmp_tdma_prep_dma_cyclic(
|
|||
i++;
|
||||
}
|
||||
|
||||
/* enable interrupt */
|
||||
if (flags & DMA_PREP_INTERRUPT)
|
||||
mmp_tdma_enable_irq(tdmac, true);
|
||||
|
||||
tdmac->buf_len = buf_len;
|
||||
tdmac->period_len = period_len;
|
||||
tdmac->pos = 0;
|
||||
|
@ -455,6 +462,8 @@ static int mmp_tdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
|
|||
switch (cmd) {
|
||||
case DMA_TERMINATE_ALL:
|
||||
mmp_tdma_disable_chan(tdmac);
|
||||
/* disable interrupt */
|
||||
mmp_tdma_enable_irq(tdmac, false);
|
||||
break;
|
||||
case DMA_PAUSE:
|
||||
mmp_tdma_pause_chan(tdmac);
|
||||
|
|
Loading…
Reference in a new issue