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[MTD] NAND Add read/write function pointers to struct nand_ecc_ctrl

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Add read/write function pointers to struct nand_ecc_ctrl to
prepare the modulaization of nand_read/write functions. The
current implementation handles every type of ecc mode
software/hardware and all kinds of strange ecc placement
schemes in one switch/if construct. Thats too complex to
maintain and too inflexible to expand. Modularization will
also shorten the code pathes of the read/write functions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2006-05-25 10:04:31 +02:00 committed by David Woodhouse
parent 7fac464868
commit 9577f44a89
1 changed files with 13 additions and 0 deletions
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13
include/linux/mtd/nand.h
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@ -233,16 +233,23 @@ struct nand_hw_control {
* @steps: number of ecc steps per page
* @size: data bytes per ecc step
* @bytes: ecc bytes per step
* @total: total number of ecc bytes per page
* @prepad: padding information for syndrome based ecc generators
* @postpad: padding information for syndrome based ecc generators
* @hwctl: function to control hardware ecc generator. Must only
* be provided if an hardware ECC is available
* @calculate: function for ecc calculation or readback from ecc hardware
* @correct: function for ecc correction, matching to ecc generator (sw/hw)
* @write_page: function to write a page according to the ecc generator requirements
*/
struct nand_ecc_ctrl {
nand_ecc_modes_t mode;
int steps;
int size;
int bytes;
int total;
int prepad;
int postpad;
void (*hwctl)(struct mtd_info *mtd, int mode);
int (*calculate)(struct mtd_info *mtd,
const uint8_t *dat,
@ -250,6 +257,12 @@ struct nand_ecc_ctrl {
int (*correct)(struct mtd_info *mtd, uint8_t *dat,
uint8_t *read_ecc,
uint8_t *calc_ecc);
int (*read_page)(struct mtd_info *mtd,
struct nand_chip *chip,
uint8_t *buf);
int (*write_page)(struct mtd_info *mtd,
struct nand_chip *chip,
uint8_t *buf, int cached);
};
/**