1 files changed, 99 insertions, 0 deletions
diff --git a/include/hwconfig.h b/include/hwconfig.h
new file mode 100644
index 0000000..cf47210
--- /dev/null
+++ b/include/hwconfig.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * An inteface for configuring a hardware via u-boot environment.
+ *
+ * Copyright (c) 2009  MontaVista Software, Inc.
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ *
+ * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
+ */
+
+#ifndef _HWCONFIG_H
+#define _HWCONFIG_H
+
+#include <linux/types.h>
+#include <linux/errno.h>
+
+#ifdef CONFIG_HWCONFIG
+
+extern int hwconfig_f(const char *opt, char *buf);
+extern const char *hwconfig_arg_f(const char *opt, size_t *arglen, char *buf);
+extern int hwconfig_arg_cmp_f(const char *opt, const char *arg, char *buf);
+extern int hwconfig_sub_f(const char *opt, const char *subopt, char *buf);
+extern const char *hwconfig_subarg_f(const char *opt, const char *subopt,
+				     size_t *subarglen, char *buf);
+extern int hwconfig_subarg_cmp_f(const char *opt, const char *subopt,
+				 const char *subarg, char *buf);
+#else
+
+static inline int hwconfig_f(const char *opt, char *buf)
+{
+	return -ENOSYS;
+}
+
+static inline const char *hwconfig_arg_f(const char *opt, size_t *arglen,
+					 char *buf)
+{
+	*arglen = 0;
+	return "";
+}
+
+static inline int hwconfig_arg_cmp_f(const char *opt, const char *arg,
+				     char *buf)
+{
+	return -ENOSYS;
+}
+
+static inline int hwconfig_sub_f(const char *opt, const char *subopt, char *buf)
+{
+	return -ENOSYS;
+}
+
+static inline const char *hwconfig_subarg_f(const char *opt, const char *subopt,
+					    size_t *subarglen, char *buf)
+{
+	*subarglen = 0;
+	return "";
+}
+
+static inline int hwconfig_subarg_cmp_f(const char *opt, const char *subopt,
+					const char *subarg, char *buf)
+{
+	return -ENOSYS;
+}
+
+#endif /* CONFIG_HWCONFIG */
+
+static inline int hwconfig(const char *opt)
+{
+	return hwconfig_f(opt, NULL);
+}
+
+static inline const char *hwconfig_arg(const char *opt, size_t *arglen)
+{
+	return hwconfig_arg_f(opt, arglen, NULL);
+}
+
+static inline int hwconfig_arg_cmp(const char *opt, const char *arg)
+{
+	return hwconfig_arg_cmp_f(opt, arg, NULL);
+}
+
+static inline int hwconfig_sub(const char *opt, const char *subopt)
+{
+	return hwconfig_sub_f(opt, subopt, NULL);
+}
+
+static inline const char *hwconfig_subarg(const char *opt, const char *subopt,
+					  size_t *subarglen)
+{
+	return hwconfig_subarg_f(opt, subopt, subarglen, NULL);
+}
+
+static inline int hwconfig_subarg_cmp(const char *opt, const char *subopt,
+				      const char *subarg)
+{
+	return hwconfig_subarg_cmp_f(opt, subopt, subarg, NULL);
+}
+
+#endif /* _HWCONFIG_H */