lib: uuid: code refactor for proper maintain between uuid bin and string

Changes in lib/uuid.c to:
- uuid_str_to_bin()
- uuid_bin_to_str()

New parameter is added to specify input/output string format in listed functions
This change allows easy recognize which UUID type is or should be stored in given
string array. Binary data of UUID and GUID is always stored in big endian, only
string representations are different as follows.

String byte: 0                                  36
String char: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
string UUID:    be     be   be   be       be
string GUID:    le     le   le   be       be

This patch also updates functions calls and declarations in a whole code.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: trini@ti.com

2 files changed, 22 insertions, 3 deletions

diff --git a/include/common.h b/include/common.h
index c48c696..cbd3c9e 100644
--- a/include/common.h
+++ b/include/common.h
@@ -822,9 +822,7 @@ void	udelay        (unsigned long);
 void mdelay(unsigned long);
 
 /* lib/uuid.c */
-void uuid_bin_to_str(unsigned char *uuid, char *str);
-int uuid_str_to_bin(char *uuid, unsigned char *out);
-int uuid_str_valid(const char *uuid);
+#include <uuid.h>
 
 /* lib/vsprintf.c */
 #include <vsprintf.h>
diff --git a/include/uuid.h b/include/uuid.h
new file mode 100644
index 0000000..e8feeed
--- /dev/null
+++ b/include/uuid.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2014 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#ifndef __UUID_H__
+#define __UUID_H__
+
+enum {
+	UUID_STR_FORMAT_STD,
+	UUID_STR_FORMAT_GUID
+};
+
+#define UUID_STR_LEN		36
+#define UUID_BIN_LEN		16
+
+int uuid_str_valid(const char *uuid);
+int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format);
+void uuid_bin_to_str(unsigned char *uuid_bin, char *uuid_str, int str_format);
+#endif