ASoC: amd: Interrupt handler changes for ACP3x DMA driver (32feac95) · Commits · 戴 / test

sound/soc/amd/raven/acp3x-pcm-dma.c

+46 −0

Original line number	Diff line number	Diff line
		@@ -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:

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