[PATCH 5/5] ASoC: amd: acp7x: add system and runtime PM ops

Add ACP7.x PM callbacks and hook up system sleep and runtime PM ops for
the PCI driver.

Signed-off-by: Vijendar Mukunda <[email protected]>
---
 sound/soc/amd/acp7x/acp7x-common.c | 43 ++++++++++++++++++++++++++++++
 sound/soc/amd/acp7x/acp7x.h        |  3 +++
 sound/soc/amd/acp7x/pci-acp7x.c    | 31 +++++++++++++++++++++
 3 files changed, 77 insertions(+)

diff --git a/sound/soc/amd/acp7x/acp7x-common.c b/sound/soc/amd/acp7x/acp7x-common.c
index 68f9b47766c4..df94864a1693 100644
--- a/sound/soc/amd/acp7x/acp7x-common.c
+++ b/sound/soc/amd/acp7x/acp7x-common.c
@@ -75,8 +75,51 @@ static int acp7x_deinit(void __iomem *acp_base, struct device *dev)
 	return 0;
 }
 
+static int __maybe_unused snd_acp7x_suspend(struct device *dev)
+{
+	struct acp7x_dev_data *adata;
+	int ret;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp_hw_deinit(adata, dev);
+	if (ret)
+		dev_err(dev, "ACP de-init failed\n");
+	return ret;
+}
+
+static int __maybe_unused snd_acp7x_runtime_resume(struct device *dev)
+{
+	struct acp7x_dev_data *adata;
+	int ret;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp_hw_init(adata, dev);
+	if (ret) {
+		dev_err(dev, "ACP init failed\n");
+		return ret;
+	}
+	return 0;
+}
+
+static int __maybe_unused snd_acp7x_resume(struct device *dev)
+{
+	struct acp7x_dev_data *adata;
+	int ret;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp_hw_init(adata, dev);
+	if (ret)
+		dev_err(dev, "ACP init failed\n");
+
+	return ret;
+}
+
 void acp7x_hw_init_ops(struct acp_hw_ops *hw_ops)
 {
 	hw_ops->acp_init = acp7x_init;
 	hw_ops->acp_deinit = acp7x_deinit;
+	hw_ops->acp_suspend = snd_acp7x_suspend;
+	hw_ops->acp_resume = snd_acp7x_resume;
+	hw_ops->acp_suspend_runtime = snd_acp7x_suspend;
+	hw_ops->acp_resume_runtime = snd_acp7x_runtime_resume;
 }
diff --git a/sound/soc/amd/acp7x/acp7x.h b/sound/soc/amd/acp7x/acp7x.h
index d3a57705385a..ddb5eabf6828 100644
--- a/sound/soc/amd/acp7x/acp7x.h
+++ b/sound/soc/amd/acp7x/acp7x.h
@@ -33,6 +33,9 @@
 #define ACP7X_PGFSM_CNTL_POWER_ON_MASK		7
 #define ACP7X_PGFSM_STATUS_MASK			0x3F
 
+/* time in ms for runtime suspend delay */
+#define ACP_SUSPEND_DELAY_MS			2000
+
 struct acp_hw_ops {
 	int (*acp_init)(void __iomem *acp_base, struct device *dev);
 	int (*acp_deinit)(void __iomem *acp_base, struct device *dev);
diff --git a/sound/soc/amd/acp7x/pci-acp7x.c b/sound/soc/amd/acp7x/pci-acp7x.c
index 237eb06e3cad..d29a149cf175 100644
--- a/sound/soc/amd/acp7x/pci-acp7x.c
+++ b/sound/soc/amd/acp7x/pci-acp7x.c
@@ -11,6 +11,7 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 #include <linux/types.h>
 
@@ -92,6 +93,11 @@ static int snd_acp7x_probe(struct pci_dev *pci,
 	ret = acp_hw_init(adata, &pci->dev);
 	if (ret)
 		goto release_regions;
+
+	pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
+	pm_runtime_use_autosuspend(&pci->dev);
+	pm_runtime_put_noidle(&pci->dev);
+	pm_runtime_allow(&pci->dev);
 	return 0;
 
 release_regions:
@@ -102,6 +108,26 @@ static int snd_acp7x_probe(struct pci_dev *pci,
 	return ret;
 }
 
+static int __maybe_unused snd_acp_suspend(struct device *dev)
+{
+	return acp_hw_suspend(dev);
+}
+
+static int __maybe_unused snd_acp_runtime_resume(struct device *dev)
+{
+	return acp_hw_runtime_resume(dev);
+}
+
+static int __maybe_unused snd_acp_resume(struct device *dev)
+{
+	return acp_hw_resume(dev);
+}
+
+static const struct dev_pm_ops acp7x_pm_ops = {
+	SET_RUNTIME_PM_OPS(snd_acp_suspend, snd_acp_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(snd_acp_suspend, snd_acp_resume)
+};
+
 static void snd_acp7x_remove(struct pci_dev *pci)
 {
 	struct acp7x_dev_data *adata;
@@ -111,6 +137,8 @@ static void snd_acp7x_remove(struct pci_dev *pci)
 	ret = acp_hw_deinit(adata, &pci->dev);
 	if (ret)
 		dev_err(&pci->dev, "ACP de-init failed\n");
+	pm_runtime_forbid(&pci->dev);
+	pm_runtime_get_noresume(&pci->dev);
 	pci_release_regions(pci);
 	pci_disable_device(pci);
 }
@@ -128,6 +156,9 @@ static struct pci_driver acp7x_pci_driver  = {
 	.id_table = snd_acp7x_ids,
 	.probe = snd_acp7x_probe,
 	.remove = snd_acp7x_remove,
+	.driver = {
+		.pm = &acp7x_pm_ops,
+	}
 };
 
 module_pci_driver(acp7x_pci_driver);
-- 
2.45.2