[MTD] User interface to Protection Registers

This is implemented using a ioctl to switch the MTD char device into
one of the different OTP "modes", at which point read/write/seek can
operate on the selected OTP area.  Also some extra ioctls to query
for size and lock protection segments or groups.  Some example user
space utilities are provided.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 10 insertions, 1 deletions

diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index 091eb571e993..c984cb2c9413 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -1,5 +1,5 @@
 /*
- * $Id: mtd-abi.h,v 1.8 2005/02/08 17:11:16 nico Exp $
+ * $Id: mtd-abi.h,v 1.9 2005/02/08 17:45:52 nico Exp $
  *
  * Portions of MTD ABI definition which are shared by kernel and user space 
  */
@@ -61,6 +61,11 @@ struct mtd_oob_buf {
 #define MTD_NANDECC_AUTOPLACE   2       // Use the default placement scheme
 #define MTD_NANDECC_PLACEONLY   3       // Use the given placement in the structure (Do not store ecc result on read)
 
+/* OTP mode selection */
+#define MTD_OTP_OFF             0
+#define MTD_OTP_FACTORY         1
+#define MTD_OTP_USER            2
+
 struct mtd_info_user {
         uint8_t type;
         uint32_t flags;
@@ -98,6 +103,10 @@ struct otp_info {
 #define MEMGETOOBSEL            _IOR('M', 10, struct nand_oobinfo)
 #define MEMGETBADBLOCK          _IOW('M', 11, loff_t)
 #define MEMSETBADBLOCK          _IOW('M', 12, loff_t)
+#define OTPSELECT               _IOR('M', 13, int)
+#define OTPGETREGIONCOUNT       _IOW('M', 14, int)
+#define OTPGETREGIONINFO        _IOW('M', 15, struct otp_info)
+#define OTPLOCK         _IOR('M', 16, struct otp_info)
 
 struct nand_oobinfo {
         uint32_t useecc;