diff options
| author | Marc Gonzalez <marc_gonzalez@sigmadesigns.com> | 2017-11-22 02:38:22 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-11-29 00:28:58 +0900 |
| commit | 1fb87de83dd6e76307e110100f265deb2d8d8163 (patch) | |
| tree | 65b3d0aefa6e2b666ce6e1aef0e610cdef6b9040 /include/linux | |
| parent | 6f84b26b53afa207092a8906fa08f4c78d65afb6 (diff) | |
mtd: nand: Support controllers with custom page
If your controller already sends the required NAND commands when
reading or writing a page, then the framework is not supposed to
send READ0 and SEQIN/PAGEPROG respectively.
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 3371d663bb4579f1b2003a92162edd6d90edd089]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mtd/nand.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8b76275537..72b2328e67 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -154,6 +154,12 @@ typedef enum { */ #define NAND_ECC_GENERIC_ERASED_CHECK BIT(0) #define NAND_ECC_MAXIMIZE BIT(1) +/* + * If your controller already sends the required NAND commands when + * reading or writing a page, then the framework is not supposed to + * send READ0 and SEQIN/PAGEPROG respectively. + */ +#define NAND_ECC_CUSTOM_PAGE_ACCESS BIT(2) /* Bit mask for flags passed to do_nand_read_ecc */ #define NAND_GET_DEVICE 0x80 @@ -202,6 +208,7 @@ typedef enum { /* Macros to identify the above */ #define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG)) #define NAND_HAS_SUBPAGE_READ(chip) ((chip->options & NAND_SUBPAGE_READ)) +#define NAND_HAS_SUBPAGE_WRITE(chip) !((chip)->options & NAND_NO_SUBPAGE_WRITE) /* Non chip related options */ /* This option skips the bbt scan during initialization. */ @@ -568,6 +575,11 @@ struct nand_ecc_ctrl { int page); }; +static inline int nand_standard_page_accessors(struct nand_ecc_ctrl *ecc) +{ + return !(ecc->options & NAND_ECC_CUSTOM_PAGE_ACCESS); +} + /** * struct nand_buffers - buffer structure for read/write * @ecccalc: buffer pointer for calculated ECC, size is oobsize. |