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Date: Fri, 15 Apr 2016 21:54:10 +0200
From: Rafał Miłecki <zajec5@...il.com>
To: Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc: linux-mtd@...ts.infradead.org,
Rafał Miłecki <zajec5@...il.com>,
Richard Weinberger <richard@....at>,
David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>,
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 10/12] mtd: nand: read ECC algorithm from the new field
Now we have all drivers properly setting this new field we can start
using it and proceed with deprecating NAND_ECC_SOFT_BCH.
Signed-off-by: Rafał Miłecki <zajec5@...il.com>
---
drivers/mtd/nand/nand_base.c | 98 ++++++++++++++++++++++++--------------------
1 file changed, 53 insertions(+), 45 deletions(-)
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index e1f3cf8..ffd1b32 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -4154,7 +4154,7 @@ int nand_scan_tail(struct mtd_info *mtd)
/*
* If no default placement scheme is given, select an appropriate one.
*/
- if (!mtd->ooblayout && (ecc->mode != NAND_ECC_SOFT_BCH)) {
+ if (!mtd->ooblayout && ecc->algo != NAND_ECC_BCH) {
switch (mtd->oobsize) {
case 8:
case 16:
@@ -4248,51 +4248,59 @@ int nand_scan_tail(struct mtd_info *mtd)
ecc->algo = NAND_ECC_HAMMING;
case NAND_ECC_SOFT:
- ecc->calculate = nand_calculate_ecc;
- ecc->correct = nand_correct_data;
- ecc->read_page = nand_read_page_swecc;
- ecc->read_subpage = nand_read_subpage;
- ecc->write_page = nand_write_page_swecc;
- ecc->read_page_raw = nand_read_page_raw;
- ecc->write_page_raw = nand_write_page_raw;
- ecc->read_oob = nand_read_oob_std;
- ecc->write_oob = nand_write_oob_std;
- if (!ecc->size)
- ecc->size = 256;
- ecc->bytes = 3;
- ecc->strength = 1;
- break;
-
case NAND_ECC_SOFT_BCH:
- if (!mtd_nand_has_bch()) {
- WARN(1, "CONFIG_MTD_NAND_ECC_BCH not enabled\n");
- ret = -EINVAL;
- goto err_free;
- }
- ecc->calculate = nand_bch_calculate_ecc;
- ecc->correct = nand_bch_correct_data;
- ecc->read_page = nand_read_page_swecc;
- ecc->read_subpage = nand_read_subpage;
- ecc->write_page = nand_write_page_swecc;
- ecc->read_page_raw = nand_read_page_raw;
- ecc->write_page_raw = nand_write_page_raw;
- ecc->read_oob = nand_read_oob_std;
- ecc->write_oob = nand_write_oob_std;
- /*
- * Board driver should supply ecc.size and ecc.strength values
- * to select how many bits are correctable. Otherwise, default
- * to 4 bits for large page devices.
- */
- if (!ecc->size && (mtd->oobsize >= 64)) {
- ecc->size = 512;
- ecc->strength = 4;
- }
+ switch (ecc->algo) {
+ case NAND_ECC_HAMMING:
+ ecc->calculate = nand_calculate_ecc;
+ ecc->correct = nand_correct_data;
+ ecc->read_page = nand_read_page_swecc;
+ ecc->read_subpage = nand_read_subpage;
+ ecc->write_page = nand_write_page_swecc;
+ ecc->read_page_raw = nand_read_page_raw;
+ ecc->write_page_raw = nand_write_page_raw;
+ ecc->read_oob = nand_read_oob_std;
+ ecc->write_oob = nand_write_oob_std;
+ if (!ecc->size)
+ ecc->size = 256;
+ ecc->bytes = 3;
+ ecc->strength = 1;
+ break;
+ case NAND_ECC_BCH:
+ if (!mtd_nand_has_bch()) {
+ WARN(1, "CONFIG_MTD_NAND_ECC_BCH not enabled\n");
+ ret = -EINVAL;
+ goto err_free;
+ }
+ ecc->calculate = nand_bch_calculate_ecc;
+ ecc->correct = nand_bch_correct_data;
+ ecc->read_page = nand_read_page_swecc;
+ ecc->read_subpage = nand_read_subpage;
+ ecc->write_page = nand_write_page_swecc;
+ ecc->read_page_raw = nand_read_page_raw;
+ ecc->write_page_raw = nand_write_page_raw;
+ ecc->read_oob = nand_read_oob_std;
+ ecc->write_oob = nand_write_oob_std;
+ /*
+ * Board driver should supply ecc.size and ecc.strength
+ * values to select how many bits are correctable.
+ * Otherwise, default to 4 bits for large page devices.
+ */
+ if (!ecc->size && (mtd->oobsize >= 64)) {
+ ecc->size = 512;
+ ecc->strength = 4;
+ }
- /* See nand_bch_init() for details. */
- ecc->bytes = 0;
- ecc->priv = nand_bch_init(mtd);
- if (!ecc->priv) {
- WARN(1, "BCH ECC initialization failed!\n");
+ /* See nand_bch_init() for details. */
+ ecc->bytes = 0;
+ ecc->priv = nand_bch_init(mtd);
+ if (!ecc->priv) {
+ WARN(1, "BCH ECC initialization failed!\n");
+ ret = -EINVAL;
+ goto err_free;
+ }
+ break;
+ default:
+ WARN(1, "Unsupported ECC algorithm!\n");
ret = -EINVAL;
goto err_free;
}
@@ -4478,7 +4486,7 @@ void nand_release(struct mtd_info *mtd)
{
struct nand_chip *chip = mtd_to_nand(mtd);
- if (chip->ecc.mode == NAND_ECC_SOFT_BCH)
+ if (chip->ecc.algo == NAND_ECC_BCH)
nand_bch_free((struct nand_bch_control *)chip->ecc.priv);
mtd_device_unregister(mtd);
--
1.8.4.5
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