[MTD] Introduce MTD_BIT_WRITEABLE

o Add a flag MTD_BIT_WRITEABLE for devices that allow single bits to be
  cleared.
o Replace MTD_PROGRAM_REGIONS with a cleared MTD_BIT_WRITEABLE flag for
  STMicro and Intel Sibley flashes with internal ECC.  Those flashes
  disallow clearing of single bits, unlike regular NOR flashes, so the
  new flag models their behaviour better.
o Remove MTD_ECC.  After the STMicro/Sibley merge, this flag is only set
  and never checked.

Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>

1 files changed, 3 insertions, 4 deletions

diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index 520a3b483100..1e09e4c8f485 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -30,14 +30,13 @@ struct mtd_oob_buf {
 #define MTD_NANDFLASH           4
 #define MTD_DATAFLASH           6
 
-#define MTD_ECC                 128     // Device capable of automatic ECC
-#define MTD_PROGRAM_REGIONS     512     // Configurable Programming Regions
 #define MTD_WRITEABLE           0x400   /* Device is writeable */
+#define MTD_BIT_WRITEABLE       0x800   /* Single bits can be flipped */
 
 // Some common devices / combinations of capabilities
 #define MTD_CAP_ROM             0
-#define MTD_CAP_RAM             (MTD_WRITEABLE)
-#define MTD_CAP_NORFLASH        (MTD_WRITEABLE)
+#define MTD_CAP_RAM             (MTD_WRITEABLE | MTD_BIT_WRITEABLE)
+#define MTD_CAP_NORFLASH        (MTD_WRITEABLE | MTD_BIT_WRITEABLE)
 #define MTD_CAP_NANDFLASH       (MTD_WRITEABLE)