[MTD] NAND Add read/write function pointers to struct nand_ecc_ctrl
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>
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 2fd85d5..daacde5 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -233,16 +233,23 @@
* @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 @@
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);
};
/**