mtd: docg3: add OOB buffer to device structure

Add OOB buffer area to store the OOB data until the actual page is written, so that it can be completed by hardware ECC generator. Signed-off-by: Robert Jarzmik <[email protected]> Reviewed-by: Ivan Djelic <[email protected]> Reviewed-by: Mike Dunn <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
Baughn · Jan 9, 2012 · 316e627 · 316e627
1 parent 376fbf2
commit 316e627
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/drivers/mtd/devices/docg3.h b/drivers/mtd/devices/docg3.h
@@ -243,6 +243,11 @@
  * @device_id: number of the cascaded DoCG3 device (0, 1, 2 or 3)
  * @if_cfg: if true, reads are on 16bits, else reads are on 8bits
  * @bbt: bad block table cache
+ * @oob_write_ofs: offset of the MTD where this OOB should belong (ie. in next
+ *                 page_write)
+ * @oob_autoecc: if 1, use only bytes 0-7, 15, and fill the others with HW ECC
+ *               if 0, use all the 16 bytes.
+ * @oob_write_buf: prepared OOB for next page_write
  * @debugfs_root: debugfs root node
  */
 struct docg3 {
@@ -252,6 +257,9 @@ struct docg3 {
 	unsigned int if_cfg:1;
 	int max_block;
 	u8 *bbt;
+	loff_t oob_write_ofs;
+	int oob_autoecc;
+	u8 oob_write_buf[DOC_LAYOUT_OOB_SIZE];
 	struct dentry *debugfs_root;
 };