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mtd: docg3: add OOB buffer to device structure

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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 <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Robert Jarzmik 2011-11-19 16:02:51 +01:00 committed by David Woodhouse
parent 376fbf2087
commit 316e627edc
1 changed files with 8 additions and 0 deletions
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8
drivers/mtd/devices/docg3.h
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@ -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;
};