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mtd: rawnand: Introduce nand_set_ecc_on_host_ops() 

There were too many levels of indentation and the code was
hard to read. Introduce a new function, similar to
nand_set_ecc_soft_ops().

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200917075213.532161-3-tudor.ambarus@microchip.com
This commit is contained in:
Tudor Ambarus 2020-09-17 10:52:12 +03:00 committed by Miquel Raynal
parent d27c9859a0
commit 6e88127904
1 changed files with 61 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
drivers/mtd/nand/raw/nand_base.c
View File

@ -5139,6 +5139,65 @@ static void nand_scan_ident_cleanup(struct nand_chip *chip)
kfree(chip->parameters.onfi);
}
static int nand_set_ecc_on_host_ops(struct nand_chip *chip)
{
struct nand_ecc_ctrl *ecc = &chip->ecc;
switch (ecc->placement) {
case NAND_ECC_PLACEMENT_UNKNOWN:
case NAND_ECC_PLACEMENT_OOB:
/* Use standard hwecc read page function? */
if (!ecc->read_page)
ecc->read_page = nand_read_page_hwecc;
if (!ecc->write_page)
ecc->write_page = nand_write_page_hwecc;
if (!ecc->read_page_raw)
ecc->read_page_raw = nand_read_page_raw;
if (!ecc->write_page_raw)
ecc->write_page_raw = nand_write_page_raw;
if (!ecc->read_oob)
ecc->read_oob = nand_read_oob_std;
if (!ecc->write_oob)
ecc->write_oob = nand_write_oob_std;
if (!ecc->read_subpage)
ecc->read_subpage = nand_read_subpage;
if (!ecc->write_subpage && ecc->hwctl && ecc->calculate)
ecc->write_subpage = nand_write_subpage_hwecc;
fallthrough;
case NAND_ECC_PLACEMENT_INTERLEAVED:
if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) &&
(!ecc->read_page ||
ecc->read_page == nand_read_page_hwecc ||
!ecc->write_page ||
ecc->write_page == nand_write_page_hwecc)) {
WARN(1, "No ECC functions supplied; hardware ECC not possible\n");
return -EINVAL;
}
/* Use standard syndrome read/write page function? */
if (!ecc->read_page)
ecc->read_page = nand_read_page_syndrome;
if (!ecc->write_page)
ecc->write_page = nand_write_page_syndrome;
if (!ecc->read_page_raw)
ecc->read_page_raw = nand_read_page_raw_syndrome;
if (!ecc->write_page_raw)
ecc->write_page_raw = nand_write_page_raw_syndrome;
if (!ecc->read_oob)
ecc->read_oob = nand_read_oob_syndrome;
if (!ecc->write_oob)
ecc->write_oob = nand_write_oob_syndrome;
break;
default:
pr_warn("Invalid NAND_ECC_PLACEMENT %d\n",
ecc->placement);
return -EINVAL;
}
return 0;
}
static int nand_set_ecc_soft_ops(struct nand_chip *chip)
{
struct mtd_info *mtd = nand_to_mtd(chip);
@ -5619,60 +5678,9 @@ static int nand_scan_tail(struct nand_chip *chip)
switch (ecc->engine_type) {
case NAND_ECC_ENGINE_TYPE_ON_HOST:
switch (ecc->placement) {
case NAND_ECC_PLACEMENT_UNKNOWN:
case NAND_ECC_PLACEMENT_OOB:
/* Use standard hwecc read page function? */
if (!ecc->read_page)
ecc->read_page = nand_read_page_hwecc;
if (!ecc->write_page)
ecc->write_page = nand_write_page_hwecc;
if (!ecc->read_page_raw)
ecc->read_page_raw = nand_read_page_raw;
if (!ecc->write_page_raw)
ecc->write_page_raw = nand_write_page_raw;
if (!ecc->read_oob)
ecc->read_oob = nand_read_oob_std;
if (!ecc->write_oob)
ecc->write_oob = nand_write_oob_std;
if (!ecc->read_subpage)
ecc->read_subpage = nand_read_subpage;
if (!ecc->write_subpage && ecc->hwctl && ecc->calculate)
ecc->write_subpage = nand_write_subpage_hwecc;
fallthrough;
case NAND_ECC_PLACEMENT_INTERLEAVED:
if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) &&
(!ecc->read_page ||
ecc->read_page == nand_read_page_hwecc ||
!ecc->write_page ||
ecc->write_page == nand_write_page_hwecc)) {
WARN(1, "No ECC functions supplied; hardware ECC not possible\n");
ret = -EINVAL;
goto err_nand_manuf_cleanup;
}
/* Use standard syndrome read/write page function? */
if (!ecc->read_page)
ecc->read_page = nand_read_page_syndrome;
if (!ecc->write_page)
ecc->write_page = nand_write_page_syndrome;
if (!ecc->read_page_raw)
ecc->read_page_raw = nand_read_page_raw_syndrome;
if (!ecc->write_page_raw)
ecc->write_page_raw = nand_write_page_raw_syndrome;
if (!ecc->read_oob)
ecc->read_oob = nand_read_oob_syndrome;
if (!ecc->write_oob)
ecc->write_oob = nand_write_oob_syndrome;
break;
default:
pr_warn("Invalid NAND_ECC_PLACEMENT %d\n",
ecc->placement);
ret = -EINVAL;
ret = nand_set_ecc_on_host_ops(chip);
if (ret)
goto err_nand_manuf_cleanup;
}
if (mtd->writesize >= ecc->size) {
if (!ecc->strength) {