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ASoC: amd: Interrupt handler changes for ACP3x DMA driver

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Whenever audio data equal to the I2S FIFO watermark level are
produced/consumed, interrupt is generated.
Acknowledge the interrupt.

Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com>
Tested-by: Ravulapati Vishnu vardhan Rao <Vishnuvardhanrao.Ravulapati@amd.com>
Signed-off-by: Vijendar Mukunda <vijendar.mukunda@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda 2018-11-12 11:04:56 +05:30 committed by Mark Brown
parent ac289c7ec0
commit 32feac95f6
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GPG Key ID: 24D68B725D5487D0
1 changed files with 46 additions and 0 deletions
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46
sound/soc/amd/raven/acp3x-pcm-dma.c
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@ -27,6 +27,7 @@
#define DRV_NAME "acp3x-i2s-audio"
struct i2s_dev_data {
unsigned int i2s_irq;
void __iomem *acp3x_base;
struct snd_pcm_substream *play_stream;
struct snd_pcm_substream *capture_stream;
@ -132,6 +133,38 @@ static int acp3x_deinit(void __iomem *acp3x_base)
return 0;
}
static irqreturn_t i2s_irq_handler(int irq, void *dev_id)
{
u16 play_flag, cap_flag;
u32 val;
struct i2s_dev_data *rv_i2s_data = dev_id;
if (!rv_i2s_data)
return IRQ_NONE;
play_flag = 0;
cap_flag = 0;
val = rv_readl(rv_i2s_data->acp3x_base + mmACP_EXTERNAL_INTR_STAT);
if ((val & BIT(BT_TX_THRESHOLD)) && rv_i2s_data->play_stream) {
rv_writel(BIT(BT_TX_THRESHOLD), rv_i2s_data->acp3x_base +
mmACP_EXTERNAL_INTR_STAT);
snd_pcm_period_elapsed(rv_i2s_data->play_stream);
play_flag = 1;
}
if ((val & BIT(BT_RX_THRESHOLD)) && rv_i2s_data->capture_stream) {
rv_writel(BIT(BT_RX_THRESHOLD), rv_i2s_data->acp3x_base +
mmACP_EXTERNAL_INTR_STAT);
snd_pcm_period_elapsed(rv_i2s_data->capture_stream);
cap_flag = 1;
}
if (play_flag | cap_flag)
return IRQ_HANDLED;
else
return IRQ_NONE;
}
static struct snd_pcm_ops acp3x_dma_ops = {
.open = NULL,
.close = NULL,
@ -205,6 +238,13 @@ static int acp3x_audio_probe(struct platform_device *pdev)
adata->acp3x_base = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n");
return -ENODEV;
}
adata->i2s_irq = res->start;
adata->play_stream = NULL;
adata->capture_stream = NULL;
@ -220,6 +260,12 @@ static int acp3x_audio_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Fail to register acp i2s dai\n");
goto dev_err;
}
status = devm_request_irq(&pdev->dev, adata->i2s_irq, i2s_irq_handler,
irqflags, "ACP3x_I2S_IRQ", adata);
if (status) {
dev_err(&pdev->dev, "ACP3x I2S IRQ request failed\n");
goto dev_err;
}
return 0;
dev_err: