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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-09-13 11:05:50 +0900 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2017-09-18 14:55:52 +0200 |
| commit | 14157f861437ebe2d624b0a845b91bbdf8ca9a2d (patch) | |
| tree | ee3b430a97c0516cd92455525419a3edc3db25d5 /include/linux/mtd/rawnand.h | |
| parent | 882fd1577cbe7812ae3a48988180c5f0fda475ca (diff) | |
| download | lwn-14157f861437ebe2d624b0a845b91bbdf8ca9a2d.tar.gz lwn-14157f861437ebe2d624b0a845b91bbdf8ca9a2d.zip | |
mtd: nand: introduce NAND_ROW_ADDR_3 flag
Several drivers check ->chipsize to see if the third row address cycle
is needed. Instead of embedding magic sizes such as 32MB, 128MB in
drivers, introduce a new flag NAND_ROW_ADDR_3 for clean-up. Since
nand_scan_ident() knows well about the device, it can handle this
properly. The flag is set if the row address bit width is greater
than 16.
Delete comments such as "One more address cycle for ..." because
intention is now clear enough from the code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Wenyou Yang <wenyou.yang@microchip.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'include/linux/mtd/rawnand.h')
| -rw-r--r-- | include/linux/mtd/rawnand.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 2b05f4273bab..749bb08c4772 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -177,6 +177,9 @@ enum nand_ecc_algo { */ #define NAND_NEED_SCRAMBLING 0x00002000 +/* Device needs 3rd row address cycle */ +#define NAND_ROW_ADDR_3 0x00004000 + /* Options valid for Samsung large page devices */ #define NAND_SAMSUNG_LP_OPTIONS NAND_CACHEPRG |