2021-10-18 11:24:24

by Vijendar Mukunda

Subject: [PATCH V2 09/13] ASoC: amd: add acp6x pdm driver pm ops

Add acp6x pdm driver pm ops.

Signed-off-by: Vijendar Mukunda <[email protected]>
---
sound/soc/amd/yc/acp6x-pdm-dma.c | 57 ++++++++++++++++++++++++++++++++
1 file changed, 57 insertions(+)

diff --git a/sound/soc/amd/yc/acp6x-pdm-dma.c b/sound/soc/amd/yc/acp6x-pdm-dma.c
index dc7c7ea5ea1a..e604f4ea524f 100644
--- a/sound/soc/amd/yc/acp6x-pdm-dma.c
+++ b/sound/soc/amd/yc/acp6x-pdm-dma.c
@@ -12,6 +12,7 @@
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
+#include <linux/pm_runtime.h>

#include "acp6x.h"

@@ -373,13 +374,69 @@ static int acp6x_pdm_audio_probe(struct platform_device *pdev)

return -ENODEV;
}
+ pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_allow(&pdev->dev);
return 0;
}

+static int acp6x_pdm_audio_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+static int __maybe_unused acp6x_pdm_resume(struct device *dev)
+{
+ struct pdm_dev_data *adata;
+ struct snd_pcm_runtime *runtime;
+ struct pdm_stream_instance *rtd;
+ u32 period_bytes, buffer_len;
+
+ adata = dev_get_drvdata(dev);
+ if (adata->capture_stream && adata->capture_stream->runtime) {
+ runtime = adata->capture_stream->runtime;
+ rtd = runtime->private_data;
+ period_bytes = frames_to_bytes(runtime, runtime->period_size);
+ buffer_len = frames_to_bytes(runtime, runtime->buffer_size);
+ acp6x_config_dma(rtd, SNDRV_PCM_STREAM_CAPTURE);
+ acp6x_init_pdm_ring_buffer(PDM_MEM_WINDOW_START, buffer_len,
+ period_bytes, adata->acp6x_base);
+ }
+ acp6x_enable_pdm_interrupts(adata->acp6x_base);
+ return 0;
+}
+
+static int __maybe_unused acp6x_pdm_suspend(struct device *dev)
+{
+ struct pdm_dev_data *adata;
+
+ adata = dev_get_drvdata(dev);
+ acp6x_disable_pdm_interrupts(adata->acp6x_base);
+ return 0;
+}
+
+static int __maybe_unused acp6x_pdm_runtime_resume(struct device *dev)
+{
+ struct pdm_dev_data *adata;
+
+ adata = dev_get_drvdata(dev);
+ acp6x_enable_pdm_interrupts(adata->acp6x_base);
+ return 0;
+}
+
+static const struct dev_pm_ops acp6x_pdm_pm_ops = {
+ SET_RUNTIME_PM_OPS(acp6x_pdm_suspend, acp6x_pdm_runtime_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(acp6x_pdm_suspend, acp6x_pdm_resume)
+};
+
static struct platform_driver acp6x_pdm_dma_driver = {
.probe = acp6x_pdm_audio_probe,
+ .remove = acp6x_pdm_audio_remove,
.driver = {
.name = "acp_yc_pdm_dma",
+ .pm = &acp6x_pdm_pm_ops,
},
};

--
2.25.1