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ASoC: amd: irq handler changes for ACP5x PCM 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.

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20210721180430.11571-7-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda
2021-07-21 23:34:22 +05:30
committed by Mark Brown
parent 77f61444e4
commit fc2c8067c7
2 changed files with 69 additions and 1 deletions
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61
sound/soc/amd/vangogh/acp5x-pcm-dma.c
View File

@@ -21,10 +21,55 @@ static const struct snd_soc_component_driver acp5x_i2s_component = {
.name = DRV_NAME,
};
static irqreturn_t i2s_irq_handler(int irq, void *dev_id)
{
struct i2s_dev_data *vg_i2s_data;
u16 irq_flag;
u32 val;
vg_i2s_data = dev_id;
if (!vg_i2s_data)
return IRQ_NONE;
irq_flag = 0;
val = acp_readl(vg_i2s_data->acp5x_base + ACP_EXTERNAL_INTR_STAT);
if ((val & BIT(HS_TX_THRESHOLD)) && vg_i2s_data->play_stream) {
acp_writel(BIT(HS_TX_THRESHOLD), vg_i2s_data->acp5x_base +
ACP_EXTERNAL_INTR_STAT);
snd_pcm_period_elapsed(vg_i2s_data->play_stream);
irq_flag = 1;
}
if ((val & BIT(I2S_TX_THRESHOLD)) && vg_i2s_data->i2ssp_play_stream) {
acp_writel(BIT(I2S_TX_THRESHOLD),
vg_i2s_data->acp5x_base + ACP_EXTERNAL_INTR_STAT);
snd_pcm_period_elapsed(vg_i2s_data->i2ssp_play_stream);
irq_flag = 1;
}
if ((val & BIT(HS_RX_THRESHOLD)) && vg_i2s_data->capture_stream) {
acp_writel(BIT(HS_RX_THRESHOLD), vg_i2s_data->acp5x_base +
ACP_EXTERNAL_INTR_STAT);
snd_pcm_period_elapsed(vg_i2s_data->capture_stream);
irq_flag = 1;
}
if ((val & BIT(I2S_RX_THRESHOLD)) && vg_i2s_data->i2ssp_capture_stream) {
acp_writel(BIT(I2S_RX_THRESHOLD),
vg_i2s_data->acp5x_base + ACP_EXTERNAL_INTR_STAT);
snd_pcm_period_elapsed(vg_i2s_data->i2ssp_capture_stream);
irq_flag = 1;
}
if (irq_flag)
return IRQ_HANDLED;
else
return IRQ_NONE;
}
static int acp5x_audio_probe(struct platform_device *pdev)
{
struct resource *res;
struct i2s_dev_data *adata;
unsigned int irqflags;
int status;
if (!pdev->dev.platform_data) {
@@ -47,12 +92,26 @@ static int acp5x_audio_probe(struct platform_device *pdev)
resource_size(res));
if (!adata->acp5x_base)
return -ENOMEM;
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;
dev_set_drvdata(&pdev->dev, adata);
status = devm_snd_soc_register_component(&pdev->dev,
&acp5x_i2s_component,
NULL, 0);
if (status)
if (status) {
dev_err(&pdev->dev, "Fail to register acp i2s component\n");
return status;
}
status = devm_request_irq(&pdev->dev, adata->i2s_irq, i2s_irq_handler,
irqflags, "ACP5x_I2S_IRQ", adata);
if (status)
dev_err(&pdev->dev, "ACP5x I2S IRQ request failed\n");
return status;
}

9
sound/soc/amd/vangogh/acp5x.h
View File

@@ -32,9 +32,18 @@
#define I2S_MODE 0
#define ACP5x_I2S_MODE 1
#define ACP5x_RES 4
#define I2S_RX_THRESHOLD 27
#define I2S_TX_THRESHOLD 28
#define HS_TX_THRESHOLD 24
#define HS_RX_THRESHOLD 23
struct i2s_dev_data {
unsigned int i2s_irq;
void __iomem *acp5x_base;
struct snd_pcm_substream *play_stream;
struct snd_pcm_substream *capture_stream;
struct snd_pcm_substream *i2ssp_play_stream;
struct snd_pcm_substream *i2ssp_capture_stream;
};
/* common header file uses exact offset rather than relative