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| author | Joern Engel <joern@wh.fh-wedel.de> | 2006-05-22 23:18:29 +0200 |
|---|---|---|
| committer | Joern Engel <joern@wh.fh-wedel.de> | 2006-05-22 23:18:29 +0200 |
| commit | 5fa433942ba4e399f7e28764c9db4ade89e91d40 (patch) | |
| tree | 29a2691729645bf27fd2d7d8d61a5c720c6569c1 /include/mtd | |
| parent | c8b229de2b05c2b3e8d282ce260935a88ac030ca (diff) | |
| download | lwn-5fa433942ba4e399f7e28764c9db4ade89e91d40.tar.gz lwn-5fa433942ba4e399f7e28764c9db4ade89e91d40.zip | |
[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>
Diffstat (limited to 'include/mtd')
| -rw-r--r-- | include/mtd/mtd-abi.h | 7 |
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) |