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 --- sound/soc/amd/vangogh/acp5x-pcm-dma.c | 61 ++++++++++++++++++++++++++- sound/soc/amd/vangogh/acp5x.h | 9 ++++ 2 files changed, 69 insertions(+), 1 deletion(-)
diff --git a/sound/soc/amd/vangogh/acp5x-pcm-dma.c b/sound/soc/amd/vangogh/acp5x-pcm-dma.c index 60d752adfb81..952d5fd83653 100644 --- a/sound/soc/amd/vangogh/acp5x-pcm-dma.c +++ b/sound/soc/amd/vangogh/acp5x-pcm-dma.c @@ -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; } diff --git a/sound/soc/amd/vangogh/acp5x.h b/sound/soc/amd/vangogh/acp5x.h index e450fb32d680..a0d898e47bb8 100644 --- a/sound/soc/amd/vangogh/acp5x.h +++ b/sound/soc/amd/vangogh/acp5x.h @@ -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