diff options
| author | Thomas Gleixner <tglx@cruncher.tec.linutronix.de> | 2006-05-23 11:38:59 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@cruncher.tec.linutronix.de> | 2006-05-23 11:38:59 +0200 |
| commit | 41796c2ea9b74cdf3bc2c368193d15b8ae8950ca (patch) | |
| tree | d7a21961f93103536656b255f717d54989f9b144 | |
| parent | a36ed2995c56d4f858ecb524a78837473e7115ae (diff) | |
[MTD] Add platform support for NAND
Add the data structures necessary to provide platform device support
for NAND
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/mtd/nand.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index b8792be3c4e..05c6ecc0703 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -510,4 +510,51 @@ extern int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, #define NAND_SMALL_BADBLOCK_POS 5 #define NAND_LARGE_BADBLOCK_POS 0 +/** + * struct platform_nand_chip - chip level device structure + * + * @nr_chips: max. number of chips to scan for + * @chip_offs: chip number offset + * @nr_partitions: number of partitions pointed to be partitoons (or zero) + * @partitions: mtd partition list + * @chip_delay: R/B delay value in us + * @options: Option flags, e.g. 16bit buswidth + * @priv: hardware controller specific settings + */ +struct platform_nand_chip { + int nr_chips; + int chip_offset; + int nr_partitions; + struct mtd_partition *partitions; + int chip_delay; + unsigned int options; + void *priv; +}; + +/** + * struct platform_nand_ctrl - controller level device structure + * + * @hwcontrol: platform specific hardware control structure + * @dev_ready: platform specific function to read ready/busy pin + * @select_chip: platform specific chip select function + * @priv_data: private data to transport driver specific settings + * + * All fields are optional and depend on the hardware driver requirements + */ +struct platform_nand_ctrl { + void (*hwcontrol)(struct mtd_info *mtd, int cmd); + int (*dev_ready)(struct mtd_info *mtd); + void (*select_chip)(struct mtd_info *mtd, int chip); + void *priv; +}; + +/* Some helpers to access the data structures */ +static inline +struct platform_nand_chip *get_platform_nandchip(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + + return chip->priv; +} + #endif /* __LINUX_MTD_NAND_H */ |