spmi: Debug-fs support for SPMI
Add user space interface to the SPMI kernel framework that enables
master-read and master-write transactions.
Each SPMI controller is represented as a file under the root directory
of SPMI debug-fs. For each controller, 'address', 'count', and 'data'
files are added. The user may configure the transaction via the
respective files and invoke a master read transaction by reading from
the 'data' file, and a master write transaction by writing a string of
decimal or hexadecimal byte size values to the 'data' file.
Change-Id: I3e760be7796bfb9aa15c8ab758ff616a72240176
Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>
Signed-off-by: Kenneth Heitke <kheitke@codeaurora.org>
diff --git a/drivers/spmi/spmi-dbgfs.h b/drivers/spmi/spmi-dbgfs.h
new file mode 100644
index 0000000..0baa4db
--- /dev/null
+++ b/drivers/spmi/spmi-dbgfs.h
@@ -0,0 +1,21 @@
+/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef _SPMI_DBGFS_H
+#define _SPMI_DBGFS_H
+
+#ifdef CONFIG_DEBUG_FS
+int spmi_dfs_add_controller(struct spmi_controller *ctrl);
+#else
+int spmi_dfs_add_controller(struct spmi_controller *ctrl) { return 0; }
+#endif
+
+#endif /* _SPMI_DBGFS_H */