1 files changed, 70 insertions, 0 deletions
diff --git a/sound/soc/codecs/lpass-macro-common.c b/sound/soc/codecs/lpass-macro-common.c
new file mode 100644
index 000000000000..1b9082d237c1
--- /dev/null
+++ b/sound/soc/codecs/lpass-macro-common.c
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2022, The Linux Foundation. All rights reserved.
+
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_runtime.h>
+
+#include "lpass-macro-common.h"
+
+struct lpass_macro *lpass_macro_pds_init(struct device *dev)
+{
+	struct lpass_macro *l_pds;
+	int ret;
+
+	if (!of_find_property(dev->of_node, "power-domains", NULL))
+		return NULL;
+
+	l_pds = devm_kzalloc(dev, sizeof(*l_pds), GFP_KERNEL);
+	if (!l_pds)
+		return ERR_PTR(-ENOMEM);
+
+	l_pds->macro_pd = dev_pm_domain_attach_by_name(dev, "macro");
+	if (IS_ERR_OR_NULL(l_pds->macro_pd)) {
+		ret = l_pds->macro_pd ? PTR_ERR(l_pds->macro_pd) : -ENODATA;
+		goto macro_err;
+	}
+
+	ret = pm_runtime_resume_and_get(l_pds->macro_pd);
+	if (ret < 0)
+		goto macro_sync_err;
+
+	l_pds->dcodec_pd = dev_pm_domain_attach_by_name(dev, "dcodec");
+	if (IS_ERR_OR_NULL(l_pds->dcodec_pd)) {
+		ret = l_pds->dcodec_pd ? PTR_ERR(l_pds->dcodec_pd) : -ENODATA;
+		goto dcodec_err;
+	}
+
+	ret = pm_runtime_resume_and_get(l_pds->dcodec_pd);
+	if (ret < 0)
+		goto dcodec_sync_err;
+	return l_pds;
+
+dcodec_sync_err:
+	dev_pm_domain_detach(l_pds->dcodec_pd, false);
+dcodec_err:
+	pm_runtime_put(l_pds->macro_pd);
+macro_sync_err:
+	dev_pm_domain_detach(l_pds->macro_pd, false);
+macro_err:
+	return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(lpass_macro_pds_init);
+
+void lpass_macro_pds_exit(struct lpass_macro *pds)
+{
+	if (pds) {
+		pm_runtime_put(pds->macro_pd);
+		dev_pm_domain_detach(pds->macro_pd, false);
+		pm_runtime_put(pds->dcodec_pd);
+		dev_pm_domain_detach(pds->dcodec_pd, false);
+	}
+}
+EXPORT_SYMBOL_GPL(lpass_macro_pds_exit);
+
+MODULE_DESCRIPTION("Common macro driver");
+MODULE_LICENSE("GPL");