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mtd: nand: sm_common: switch to mtd_ooblayout_ops
Implementing the mtd_ooblayout_ops interface is the new way of exposing ECC/OOB layout to MTD users. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
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@ -12,14 +12,47 @@
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#include <linux/sizes.h>
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#include "sm_common.h"
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static struct nand_ecclayout nand_oob_sm = {
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.eccbytes = 6,
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.eccpos = {8, 9, 10, 13, 14, 15},
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.oobfree = {
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{.offset = 0 , .length = 4}, /* reserved */
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{.offset = 6 , .length = 2}, /* LBA1 */
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{.offset = 11, .length = 2} /* LBA2 */
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static int oob_sm_ooblayout_ecc(struct mtd_info *mtd, int section,
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struct mtd_oob_region *oobregion)
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{
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if (section > 1)
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return -ERANGE;
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oobregion->length = 3;
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oobregion->offset = ((section + 1) * 8) - 3;
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return 0;
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}
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static int oob_sm_ooblayout_free(struct mtd_info *mtd, int section,
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struct mtd_oob_region *oobregion)
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{
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switch (section) {
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case 0:
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/* reserved */
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oobregion->offset = 0;
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oobregion->length = 4;
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break;
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case 1:
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/* LBA1 */
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oobregion->offset = 6;
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oobregion->length = 2;
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break;
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case 2:
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/* LBA2 */
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oobregion->offset = 11;
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oobregion->length = 2;
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break;
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default:
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return -ERANGE;
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}
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return 0;
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}
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static const struct mtd_ooblayout_ops oob_sm_ops = {
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.ecc = oob_sm_ooblayout_ecc,
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.free = oob_sm_ooblayout_free,
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};
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/* NOTE: This layout is is not compatabable with SmartMedia, */
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@ -28,15 +61,43 @@ static struct nand_ecclayout nand_oob_sm = {
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/* If you use smftl, it will bypass this and work correctly */
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/* If you not, then you break SmartMedia compliance anyway */
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static struct nand_ecclayout nand_oob_sm_small = {
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.eccbytes = 3,
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.eccpos = {0, 1, 2},
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.oobfree = {
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{.offset = 3 , .length = 2}, /* reserved */
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{.offset = 6 , .length = 2}, /* LBA1 */
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}
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};
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static int oob_sm_small_ooblayout_ecc(struct mtd_info *mtd, int section,
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struct mtd_oob_region *oobregion)
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{
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if (section)
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return -ERANGE;
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oobregion->length = 3;
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oobregion->offset = 0;
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return 0;
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}
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static int oob_sm_small_ooblayout_free(struct mtd_info *mtd, int section,
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struct mtd_oob_region *oobregion)
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{
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switch (section) {
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case 0:
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/* reserved */
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oobregion->offset = 3;
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oobregion->length = 2;
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break;
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case 1:
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/* LBA1 */
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oobregion->offset = 6;
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oobregion->length = 2;
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break;
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default:
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return -ERANGE;
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}
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return 0;
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}
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static const struct mtd_ooblayout_ops oob_sm_small_ops = {
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.ecc = oob_sm_small_ooblayout_ecc,
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.free = oob_sm_small_ooblayout_free,
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};
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static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs)
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{
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@ -121,9 +182,9 @@ int sm_register_device(struct mtd_info *mtd, int smartmedia)
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/* ECC layout */
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if (mtd->writesize == SM_SECTOR_SIZE)
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chip->ecc.layout = &nand_oob_sm;
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mtd_set_ooblayout(mtd, &oob_sm_ops);
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else if (mtd->writesize == SM_SMALL_PAGE)
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chip->ecc.layout = &nand_oob_sm_small;
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mtd_set_ooblayout(mtd, &oob_sm_small_ops);
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else
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return -ENODEV;
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