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Subject[PATCH 09/11] ASoC: amd: add acp3x runtime pm ops
Date
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>
---
sound/soc/amd/raven/acp3x-pcm-dma.c | 39 +++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)

diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index 15a5f3b..710c5c5 100644
--- 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,
},
};

--
2.7.4
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