Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / mfd / syscon.h

diff --git a/kernel/include/linux/mfd/syscon.h b/kernel/include/linux/mfd/syscon.h
new file mode 100644 (file)
index 0000000..75e543b
--- /dev/null
+++ b/kernel/include/linux/mfd/syscon.h
@@ -0,0 +1,53 @@
+/*
+ * System Control Driver
+ *
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Linaro Ltd.
+ *
+ * Author: Dong Aisheng <dong.aisheng@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __LINUX_MFD_SYSCON_H__
+#define __LINUX_MFD_SYSCON_H__
+
+#include <linux/err.h>
+
+struct device_node;
+
+#ifdef CONFIG_MFD_SYSCON
+extern struct regmap *syscon_node_to_regmap(struct device_node *np);
+extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
+extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s);
+extern struct regmap *syscon_regmap_lookup_by_phandle(
+                                       struct device_node *np,
+                                       const char *property);
+#else
+static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
+{
+       return ERR_PTR(-ENOSYS);
+}
+
+static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
+{
+       return ERR_PTR(-ENOSYS);
+}
+
+static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
+{
+       return ERR_PTR(-ENOSYS);
+}
+
+static inline struct regmap *syscon_regmap_lookup_by_phandle(
+                                       struct device_node *np,
+                                       const char *property)
+{
+       return ERR_PTR(-ENOSYS);
+}
+#endif
+
+#endif /* __LINUX_MFD_SYSCON_H__ */