[PATCH 09/13] ASoC: amd: add acp6.2 pdm driver pm ops

From: Syed Saba kareem
Date: Fri Aug 12 2022 - 08:12:03 EST


Add acp6.2 pdm driver pm ops.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@xxxxxxx>
---
sound/soc/amd/ps/ps-pdm-dma.c | 57 +++++++++++++++++++++++++++++++++++
1 file changed, 57 insertions(+)

diff --git a/sound/soc/amd/ps/ps-pdm-dma.c b/sound/soc/amd/ps/ps-pdm-dma.c
index a98a2015015d..7400fc7e1afd 100644
--- a/sound/soc/amd/ps/ps-pdm-dma.c
+++ b/sound/soc/amd/ps/ps-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 "acp62.h"

@@ -374,13 +375,69 @@ static int acp62_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 acp62_pdm_audio_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+static int __maybe_unused acp62_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);
+ acp62_config_dma(rtd, SNDRV_PCM_STREAM_CAPTURE);
+ acp62_init_pdm_ring_buffer(PDM_MEM_WINDOW_START, buffer_len,
+ period_bytes, adata->acp62_base);
+ }
+ acp62_enable_pdm_interrupts(adata->acp62_base);
+ return 0;
+}
+
+static int __maybe_unused acp62_pdm_suspend(struct device *dev)
+{
+ struct pdm_dev_data *adata;
+
+ adata = dev_get_drvdata(dev);
+ acp62_disable_pdm_interrupts(adata->acp62_base);
+ return 0;
+}
+
+static int __maybe_unused acp62_pdm_runtime_resume(struct device *dev)
+{
+ struct pdm_dev_data *adata;
+
+ adata = dev_get_drvdata(dev);
+ acp62_enable_pdm_interrupts(adata->acp62_base);
+ return 0;
+}
+
+static const struct dev_pm_ops acp62_pdm_pm_ops = {
+ SET_RUNTIME_PM_OPS(acp62_pdm_suspend, acp62_pdm_runtime_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(acp62_pdm_suspend, acp62_pdm_resume)
+};
+
static struct platform_driver acp62_pdm_dma_driver = {
.probe = acp62_pdm_audio_probe,
+ .remove = acp62_pdm_audio_remove,
.driver = {
.name = "acp_ps_pdm_dma",
+ .pm = &acp62_pdm_pm_ops,
},
};

--
2.25.1