ASoC: amd: add acp3x runtime pm ops

Added runtime PM operations for ACP3x PCM platform device.

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>

diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index 15a5f3b..710c5c5 100644 (file)
--- a/sound/soc/amd/raven/acp3x-pcm-dma.c
+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c
@@ -17,6 +17,7 @@
 #include <linux/module.h>
 #include <linux/err.h>
 #include <linux/io.h>
+#include <linux/pm_runtime.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
@@ -660,6 +661,9 @@ static int acp3x_audio_probe(struct platform_device *pdev)
                goto dev_err;
        }
 
+       pm_runtime_set_autosuspend_delay(&pdev->dev, 10000);
+       pm_runtime_use_autosuspend(&pdev->dev);
+       pm_runtime_enable(&pdev->dev);
        return 0;
 dev_err:
        status = acp3x_deinit(adata->acp3x_base);
@@ -682,14 +686,49 @@ static int acp3x_audio_remove(struct platform_device *pdev)
        else
                dev_info(&pdev->dev, "ACP de-initialized\n");
 
+       pm_runtime_disable(&pdev->dev);
        return 0;
 }
 
+static int acp3x_pcm_runtime_suspend(struct device *dev)
+{
+       int status;
+       struct i2s_dev_data *adata = dev_get_drvdata(dev);
+
+       status = acp3x_deinit(adata->acp3x_base);
+       if (status)
+               dev_err(dev, "ACP de-init failed\n");
+       else
+               dev_info(dev, "ACP de-initialized\n");
+
+       rv_writel(0, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
+
+       return 0;
+}
+
+static int acp3x_pcm_runtime_resume(struct device *dev)
+{
+       int status;
+       struct i2s_dev_data *adata = dev_get_drvdata(dev);
+
+       status = acp3x_init(adata->acp3x_base);
+       if (status)
+               return -ENODEV;
+       rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
+       return 0;
+}
+
+static const struct dev_pm_ops acp3x_pm_ops = {
+       .runtime_suspend = acp3x_pcm_runtime_suspend,
+       .runtime_resume = acp3x_pcm_runtime_resume,
+};
+
 static struct platform_driver acp3x_dma_driver = {
        .probe = acp3x_audio_probe,
        .remove = acp3x_audio_remove,
        .driver = {
                .name = "acp3x_rv_i2s",
+               .pm = &acp3x_pm_ops,
        },
 };