On 11/7/19 7:24 AM, Ravulapati Vishnu vardhan rao wrote:
whenever audio data equal to I2S-SP fifo watermark level is produced/consumed, interrupt is generated.
Signed-off-by: Ravulapati Vishnu vardhan rao Vishnuvardhanrao.Ravulapati@amd.com
sound/soc/amd/raven/acp3x-pcm-dma.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c index 8fab505..629a32f 100644 --- a/sound/soc/amd/raven/acp3x-pcm-dma.c +++ b/sound/soc/amd/raven/acp3x-pcm-dma.c @@ -176,6 +176,13 @@ static irqreturn_t i2s_irq_handler(int irq, void *dev_id) snd_pcm_period_elapsed(rv_i2s_data->play_stream); play_flag = 1; }
- if ((val & BIT(I2S_TX_THRESHOLD)) &&
rv_i2s_data->i2ssp_play_stream) {rv_writel(BIT(I2S_TX_THRESHOLD),rv_i2s_data->acp3x_base + mmACP_EXTERNAL_INTR_STAT);snd_pcm_period_elapsed(rv_i2s_data->i2ssp_play_stream);
The commit message looks odd. If you have a DMA and signal a period elapsed, is this really a case where the FIFO level reaches a watermark? Usually the FIFOs are somewhat small and there are multiple DMA transfers per period?