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| author | Vijendar Mukunda <Vijendar.Mukunda@amd.com> | 2018-11-12 11:04:56 +0530 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-11-13 11:44:06 -0800 |
| commit | 32feac95f646aebaafdaf12a610898b6e5db54ae (patch) | |
| tree | 2c9d1fa213770cf55a19c53c052f97be698f5ccd /sound/soc/amd | |
| parent | ac289c7ec0bc9cf426036a8adbe36f72be53d0ae (diff) | |
| download | linux-32feac95f646aebaafdaf12a610898b6e5db54ae.tar.gz linux-32feac95f646aebaafdaf12a610898b6e5db54ae.tar.bz2 linux-32feac95f646aebaafdaf12a610898b6e5db54ae.zip | |
ASoC: amd: Interrupt handler changes for ACP3x DMA driver
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>
Diffstat (limited to 'sound/soc/amd')
| -rw-r--r-- | sound/soc/amd/raven/acp3x-pcm-dma.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c index 3e806f74c6f7..94f915afd1b3 100644 --- a/sound/soc/amd/raven/acp3x-pcm-dma.c +++ b/sound/soc/amd/raven/acp3x-pcm-dma.c @@ -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: |