Re: [PATCH 06/13] ASoC: amd: add acp6x irq handler

On Mon, 2021-10-11 at 11:26 +0530, Vijendar Mukunda wrote:

Add ACP6x irq handler for handling irq events for ACP IP. Add pdm irq events handling. Whenever audio data equal to the PDM watermark level are consumed, interrupt is generated. Acknowledge the interrupt.

diff --git a/sound/soc/amd/yc/pci-acp6x.c b/sound/soc/amd/yc/pci-acp6x.c

[]

@@ -116,6 +118,33 @@ static int acp6x_deinit(void __iomem *acp_base)   return 0;  }

+static irqreturn_t acp6x_irq_handler(int irq, void *dev_id) +{

• struct acp6x_dev_data *adata;
• struct pdm_dev_data *yc_pdm_data;
• u16 irq_flag;

irq_flag seems unnecessary.

• u32 val;
• adata = dev_id;
• if (!adata)

• return IRQ_NONE;
  

• irq_flag = 0;
• val = acp6x_readl(adata->acp6x_base + ACP_EXTERNAL_INTR_STAT);
• if (val & BIT(PDM_DMA_STAT)) {

• yc_pdm_data = dev_get_drvdata(&adata->pdev[0]->dev);
  

• acp6x_writel(BIT(PDM_DMA_STAT), adata->acp6x_base + ACP_EXTERNAL_INTR_STAT);
  

• if (yc_pdm_data->capture_stream)
  

• 	snd_pcm_period_elapsed(yc_pdm_data->capture_stream);
  

• irq_flag = 1;
  

Could be:

return IRQ_HANDLED;

• }
• if (irq_flag)

• return IRQ_HANDLED;
  

• else

• return IRQ_NONE;
  

and return IRQ_NONE;

+}