diff options
Diffstat (limited to 'include/linux/mtd/mtd.h')
| -rw-r--r-- | include/linux/mtd/mtd.h | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 94a443d45258..d644e57703ad 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -23,7 +23,7 @@ #define MTD_CHAR_MAJOR 90 #define MTD_BLOCK_MAJOR 31 -#define MAX_MTD_DEVICES 16 +#define MAX_MTD_DEVICES 32 #define MTD_ERASE_PENDING 0x01 #define MTD_ERASING 0x02 @@ -75,15 +75,12 @@ typedef enum { * struct mtd_oob_ops - oob operation operands * @mode: operation mode * - * @len: number of bytes to write/read. When a data buffer is given - * (datbuf != NULL) this is the number of data bytes. When - * no data buffer is available this is the number of oob bytes. + * @len: number of data bytes to write/read * - * @retlen: number of bytes written/read. When a data buffer is given - * (datbuf != NULL) this is the number of data bytes. When - * no data buffer is available this is the number of oob bytes. + * @retlen: number of data bytes written/read * - * @ooblen: number of oob bytes per page + * @ooblen: number of oob bytes to write/read + * @oobretlen: number of oob bytes written/read * @ooboffs: offset of oob data in the oob area (only relevant when * mode = MTD_OOB_PLACE) * @datbuf: data buffer - if NULL only oob data are read/written @@ -94,6 +91,7 @@ struct mtd_oob_ops { size_t len; size_t retlen; size_t ooblen; + size_t oobretlen; uint32_t ooboffs; uint8_t *datbuf; uint8_t *oobbuf; @@ -202,11 +200,20 @@ struct mtd_info { /* ECC status information */ struct mtd_ecc_stats ecc_stats; + /* Subpage shift (NAND) */ + int subpage_sft; void *priv; struct module *owner; int usecount; + + /* If the driver is something smart, like UBI, it may need to maintain + * its own reference counting. The below functions are only for driver. + * The driver may register its callbacks. These callbacks are not + * supposed to be called by MTD users */ + int (*get_device) (struct mtd_info *mtd); + void (*put_device) (struct mtd_info *mtd); }; @@ -216,6 +223,7 @@ extern int add_mtd_device(struct mtd_info *mtd); extern int del_mtd_device (struct mtd_info *mtd); extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); +extern struct mtd_info *get_mtd_device_nm(const char *name); extern void put_mtd_device(struct mtd_info *mtd); |