ASoC: amd: add acp6x pdm driver pm ops

Add acp6x pdm driver pm ops.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20211018112044.1705805-10-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/yc/acp6x-pdm-dma.c b/sound/soc/amd/yc/acp6x-pdm-dma.c
index dc7c7ea..e604f4e 100644 (file)
--- 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,
        },
 };