{MTD] add support for Intel's "Sibley" flash

This updates the Primary Vendor-Specific Extended Query parsing to
version 1.4 in order to get the information about the Configurable
Programming Mode regions implemented in the Sibley flash, as well as
selecting the appropriate write command code.

This flash does not behave like traditional NOR flash when writing data.
While mtdblock should just work, further changes are needed for JFFS2 use.

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

1 files changed, 12 insertions, 2 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index c50c3f3927d9..ab5804183916 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -1,5 +1,5 @@
 /* 
- * $Id: mtd.h,v 1.59 2005/04/11 10:19:02 gleixner Exp $
+ * $Id: mtd.h,v 1.60 2005/08/06 04:40:42 nico Exp $
  *
  * Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
  *
@@ -72,7 +72,17 @@ struct mtd_info {
         u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
         u_int32_t ecctype;
         u_int32_t eccsize;
-        
+
+        /*
+         * Reuse some of the above unused fields in the case of NOR flash
+         * with configurable programming regions to avoid modifying the
+         * user visible structure layout/size.  Only valid when the
+         * MTD_PROGRAM_REGIONS flag is set.
+         * (Maybe we should have an union for those?)
+         */
+#define MTD_PROGREGION_SIZE(mtd)  (mtd)->oobblock
+#define MTD_PROGREGION_CTRLMODE_VALID(mtd)  (mtd)->oobsize
+#define MTD_PROGREGION_CTRLMODE_INVALID(mtd)  (mtd)->ecctype
 
         // Kernel-only stuff starts here.
         char *name;