mtd: nand: subpage write support for hardware based ECC schemes

[karo-tx-linux.git] / include / linux / mtd / nand.h

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index ebf970e114281dd4731187b18aa1a45eae425fba..ab6363443ce81f033b641b014102a2dfdf8921be 100644 (file)
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -318,6 +318,7 @@ struct nand_hw_control {
  *             any single ECC step, 0 if bitflips uncorrectable, -EIO hw error
  * @read_subpage:      function to read parts of the page covered by ECC;
  *                     returns same as read_page()
+ * @write_subpage:     function to write parts of the page covered by ECC.
  * @write_page:        function to write a page according to the ECC generator
  *             requirements.
  * @write_oob_raw:     function to write chip OOB data without ECC
@@ -349,6 +350,9 @@ struct nand_ecc_ctrl {
                        uint8_t *buf, int oob_required, int page);
        int (*read_subpage)(struct mtd_info *mtd, struct nand_chip *chip,
                        uint32_t offs, uint32_t len, uint8_t *buf);
+       int (*write_subpage)(struct mtd_info *mtd, struct nand_chip *chip,
+                       uint32_t offset, uint32_t data_len,
+                       const uint8_t *data_buf, int oob_required);
        int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
                        const uint8_t *buf, int oob_required);
        int (*write_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip,
@@ -484,8 +488,8 @@ struct nand_chip {
        int (*errstat)(struct mtd_info *mtd, struct nand_chip *this, int state,
                        int status, int page);
        int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
-                       const uint8_t *buf, int oob_required, int page,
-                       int cached, int raw);
+                       uint32_t offset, int data_len, const uint8_t *buf,
+                       int oob_required, int page, int cached, int raw);
        int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
                        int feature_addr, uint8_t *subfeature_para);
        int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,