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mtd: nand: tango: Use nand_to_mtd() instead of directly accessing chip->mtd

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The nand_to_mtd() helper is here to hide internal mtd_info <-> nand_chip
association and ease future refactors.

Make use of this helper instead of directly accessing chip->mtd.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
This commit is contained in:
Boris Brezillon 2016-11-21 10:03:04 +01:00
parent 4d6aecfb7e
commit 8fcfba0724
1 changed files with 16 additions and 9 deletions
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25
drivers/mtd/nand/tango_nand.c
View file

@ -171,6 +171,7 @@ static void tango_select_chip(struct mtd_info *mtd, int idx)
*/
static int check_erased_page(struct nand_chip *chip, u8 *buf)
{
struct mtd_info *mtd = nand_to_mtd(chip);
u8 *meta = chip->oob_poi + BBM_SIZE;
u8 *ecc = chip->oob_poi + BBM_SIZE + METADATA_SIZE;
const int ecc_size = chip->ecc.bytes;
@ -183,7 +184,7 @@ static int check_erased_page(struct nand_chip *chip, u8 *buf)
meta, meta_len,
chip->ecc.strength);
if (res < 0)
chip->mtd.ecc_stats.failed++;
mtd->ecc_stats.failed++;
bitflips = max(res, bitflips);
buf += pkt_size;
@ -300,26 +301,30 @@ static int tango_write_page(struct mtd_info *mtd, struct nand_chip *chip,
static void aux_read(struct nand_chip *chip, u8 **buf, int len, int *pos)
{
struct mtd_info *mtd = nand_to_mtd(chip);
*pos += len;
if (!*buf) {
/* skip over "len" bytes */
chip->cmdfunc(&chip->mtd, NAND_CMD_RNDOUT, *pos, -1);
chip->cmdfunc(mtd, NAND_CMD_RNDOUT, *pos, -1);
} else {
tango_read_buf(&chip->mtd, *buf, len);
tango_read_buf(mtd, *buf, len);
*buf += len;
}
}
static void aux_write(struct nand_chip *chip, const u8 **buf, int len, int *pos)
{
struct mtd_info *mtd = nand_to_mtd(chip);
*pos += len;
if (!*buf) {
/* skip over "len" bytes */
chip->cmdfunc(&chip->mtd, NAND_CMD_SEQIN, *pos, -1);
chip->cmdfunc(mtd, NAND_CMD_SEQIN, *pos, -1);
} else {
tango_write_buf(&chip->mtd, *buf, len);
tango_write_buf(mtd, *buf, len);
*buf += len;
}
}
@ -345,8 +350,9 @@ static void aux_write(struct nand_chip *chip, const u8 **buf, int len, int *pos)
*/
static void raw_read(struct nand_chip *chip, u8 *buf, u8 *oob)
{
struct mtd_info *mtd = nand_to_mtd(chip);
u8 *oob_orig = oob;
const int page_size = chip->mtd.writesize;
const int page_size = mtd->writesize;
const int ecc_size = chip->ecc.bytes;
const int pkt_size = chip->ecc.size;
int pos = 0; /* position within physical page */
@ -371,8 +377,9 @@ static void raw_read(struct nand_chip *chip, u8 *buf, u8 *oob)
static void raw_write(struct nand_chip *chip, const u8 *buf, const u8 *oob)
{
struct mtd_info *mtd = nand_to_mtd(chip);
const u8 *oob_orig = oob;
const int page_size = chip->mtd.writesize;
const int page_size = mtd->writesize;
const int ecc_size = chip->ecc.bytes;
const int pkt_size = chip->ecc.size;
int pos = 0; /* position within physical page */
@ -522,7 +529,7 @@ static int chip_init(struct device *dev, struct device_node *np)
chip = &tchip->nand_chip;
ecc = &chip->ecc;
mtd = &chip->mtd;
mtd = nand_to_mtd(chip);
chip->read_byte = tango_read_byte;
chip->write_buf = tango_write_buf;
@ -584,7 +591,7 @@ static int tango_nand_remove(struct platform_device *pdev)
for (cs = 0; cs < MAX_CS; ++cs) {
if (nfc->chips[cs])
nand_release(&nfc->chips[cs]->nand_chip.mtd);
nand_release(nand_to_mtd(&nfc->chips[cs]->nand_chip));
}
return 0;