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[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>
This commit is contained in:
Thomas Gleixner 2006-05-23 11:38:59 +02:00
parent a36ed2995c
commit 41796c2ea9
1 changed files with 47 additions and 0 deletions
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47
include/linux/mtd/nand.h
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@ -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 */