diff options
| author | Vijendar Mukunda <Vijendar.Mukunda@amd.com> | 2020-05-19 01:16:56 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-05-19 13:45:30 +0100 |
| commit | b9901654a90a367a74c34c76e0c8b4156bf539af (patch) | |
| tree | 1a612b17fff8fd0360227628a6a6b7973855cce9 /sound/soc/amd/renoir | |
| parent | f621a3676d3f52fcb8b7d8db8acbcc28423bcdb7 (diff) | |
| download | linux-b9901654a90a367a74c34c76e0c8b4156bf539af.tar.gz | |
ASoC: amd: irq handler changes for ACP3x PDM dma driver
Whenever audio data equal to the PDM watermark level
are consumed, interrupt is generated.
Acknowledge the interrupt.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200518171704.24999-7-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/amd/renoir')
| -rw-r--r-- | sound/soc/amd/renoir/acp3x-pdm-dma.c | 38 | ||||
| -rw-r--r-- | sound/soc/amd/renoir/rn_acp3x.h | 2 |
2 files changed, 40 insertions, 0 deletions
diff --git a/sound/soc/amd/renoir/acp3x-pdm-dma.c b/sound/soc/amd/renoir/acp3x-pdm-dma.c index 1dda8cf2edd2..fdac2c1e3acd 100644 --- a/sound/soc/amd/renoir/acp3x-pdm-dma.c +++ b/sound/soc/amd/renoir/acp3x-pdm-dma.c @@ -16,6 +16,31 @@ #define DRV_NAME "acp_rn_pdm_dma" +static irqreturn_t pdm_irq_handler(int irq, void *dev_id) +{ + struct pdm_dev_data *rn_pdm_data; + u16 cap_flag; + u32 val; + + rn_pdm_data = dev_id; + if (!rn_pdm_data) + return IRQ_NONE; + + cap_flag = 0; + val = rn_readl(rn_pdm_data->acp_base + ACP_EXTERNAL_INTR_STAT); + if ((val & BIT(PDM_DMA_STAT)) && rn_pdm_data->capture_stream) { + rn_writel(BIT(PDM_DMA_STAT), rn_pdm_data->acp_base + + ACP_EXTERNAL_INTR_STAT); + snd_pcm_period_elapsed(rn_pdm_data->capture_stream); + cap_flag = 1; + } + + if (cap_flag) + return IRQ_HANDLED; + else + return IRQ_NONE; +} + static struct snd_soc_dai_driver acp_pdm_dai_driver = { .capture = { .rates = SNDRV_PCM_RATE_48000, @@ -60,6 +85,13 @@ static int acp_pdm_audio_probe(struct platform_device *pdev) if (!adata->acp_base) return -ENOMEM; + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n"); + return -ENODEV; + } + + adata->pdm_irq = res->start; adata->capture_stream = NULL; dev_set_drvdata(&pdev->dev, adata); @@ -71,6 +103,12 @@ static int acp_pdm_audio_probe(struct platform_device *pdev) return -ENODEV; } + status = devm_request_irq(&pdev->dev, adata->pdm_irq, pdm_irq_handler, + irqflags, "ACP_PDM_IRQ", adata); + if (status) { + dev_err(&pdev->dev, "ACP PDM IRQ request failed\n"); + return -ENODEV; + } return 0; } diff --git a/sound/soc/amd/renoir/rn_acp3x.h b/sound/soc/amd/renoir/rn_acp3x.h index 0b450882c6c4..1ad8a7845fda 100644 --- a/sound/soc/amd/renoir/rn_acp3x.h +++ b/sound/soc/amd/renoir/rn_acp3x.h @@ -28,8 +28,10 @@ #define ACP_ERROR_MASK 0x20000000 #define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF +#define PDM_DMA_STAT 0x10 struct pdm_dev_data { + u32 pdm_irq; void __iomem *acp_base; struct snd_pcm_substream *capture_stream; }; |