ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/base/syscore.c b/marvell/linux/drivers/base/syscore.c
new file mode 100644
index 0000000..f3ca20c
--- /dev/null
+++ b/marvell/linux/drivers/base/syscore.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * syscore.c - Execution of system core operations.
+ *
+ * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
+ */
+
+#include <linux/syscore_ops.h>
+#include <linux/mutex.h>
+#include <linux/module.h>
+#include <linux/suspend.h>
+#include <trace/events/power.h>
+#include <linux/wakeup_reason.h>
+
+static LIST_HEAD(syscore_ops_list);
+static DEFINE_MUTEX(syscore_ops_lock);
+
+/**
+ * register_syscore_ops - Register a set of system core operations.
+ * @ops: System core operations to register.
+ */
+void register_syscore_ops(struct syscore_ops *ops)
+{
+ mutex_lock(&syscore_ops_lock);
+ list_add_tail(&ops->node, &syscore_ops_list);
+ mutex_unlock(&syscore_ops_lock);
+}
+EXPORT_SYMBOL_GPL(register_syscore_ops);
+
+/**
+ * unregister_syscore_ops - Unregister a set of system core operations.
+ * @ops: System core operations to unregister.
+ */
+void unregister_syscore_ops(struct syscore_ops *ops)
+{
+ mutex_lock(&syscore_ops_lock);
+ list_del(&ops->node);
+ mutex_unlock(&syscore_ops_lock);
+}
+EXPORT_SYMBOL_GPL(unregister_syscore_ops);
+
+#ifdef CONFIG_PM_SLEEP
+/**
+ * syscore_suspend - Execute all the registered system core suspend callbacks.
+ *
+ * This function is executed with one CPU on-line and disabled interrupts.
+ */
+int syscore_suspend(void)
+{
+ struct syscore_ops *ops;
+ int ret = 0;
+
+ trace_suspend_resume(TPS("syscore_suspend"), 0, true);
+ pr_debug("Checking wakeup interrupts\n");
+
+ /* Return error code if there are any wakeup interrupts pending. */
+ if (pm_wakeup_pending())
+ return -EBUSY;
+
+ WARN_ONCE(!irqs_disabled(),
+ "Interrupts enabled before system core suspend.\n");
+
+ list_for_each_entry_reverse(ops, &syscore_ops_list, node)
+ if (ops->suspend) {
+ if (initcall_debug)
+ pr_info("PM: Calling %pS\n", ops->suspend);
+ ret = ops->suspend();
+ if (ret)
+ goto err_out;
+ WARN_ONCE(!irqs_disabled(),
+ "Interrupts enabled after %pS\n", ops->suspend);
+ }
+
+ trace_suspend_resume(TPS("syscore_suspend"), 0, false);
+ return 0;
+
+ err_out:
+ log_suspend_abort_reason("System core suspend callback %pS failed",
+ ops->suspend);
+ pr_err("PM: System core suspend callback %pF failed.\n", ops->suspend);
+
+ list_for_each_entry_continue(ops, &syscore_ops_list, node)
+ if (ops->resume)
+ ops->resume();
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(syscore_suspend);
+
+/**
+ * syscore_resume - Execute all the registered system core resume callbacks.
+ *
+ * This function is executed with one CPU on-line and disabled interrupts.
+ */
+void syscore_resume(void)
+{
+ struct syscore_ops *ops;
+
+ trace_suspend_resume(TPS("syscore_resume"), 0, true);
+ WARN_ONCE(!irqs_disabled(),
+ "Interrupts enabled before system core resume.\n");
+
+ list_for_each_entry(ops, &syscore_ops_list, node)
+ if (ops->resume) {
+ if (initcall_debug)
+ pr_info("PM: Calling %pS\n", ops->resume);
+ ops->resume();
+ WARN_ONCE(!irqs_disabled(),
+ "Interrupts enabled after %pS\n", ops->resume);
+ }
+ trace_suspend_resume(TPS("syscore_resume"), 0, false);
+}
+EXPORT_SYMBOL_GPL(syscore_resume);
+#endif /* CONFIG_PM_SLEEP */
+
+/**
+ * syscore_shutdown - Execute all the registered system core shutdown callbacks.
+ */
+void syscore_shutdown(void)
+{
+ struct syscore_ops *ops;
+
+ mutex_lock(&syscore_ops_lock);
+
+ list_for_each_entry_reverse(ops, &syscore_ops_list, node)
+ if (ops->shutdown) {
+ if (initcall_debug)
+ pr_info("PM: Calling %pS\n", ops->shutdown);
+ ops->shutdown();
+ }
+
+ mutex_unlock(&syscore_ops_lock);
+}