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mtd: rawnand: move calls to ->select_chip() in nand_setup_data_interface() 

After a ->set_features(TIMINGS), the chip is supposed to be working at a
new speed. In order for all the transactions to be perperly handled, the
NAND controller should also be configured to this same speed. Calling
->setup_data_interface() is not enough and the chip should be
de-asserted/re-asserted through calls to ->select_chip().

Prepare the next change in nand_setup_data_interface() where timings
will be checked after being applied. Because assertions of the CS pin
will be needed from within this function, move the calls to
->select_chip() inside nand_setup_data_interface() for later
consistency.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal 2018-03-19 14:47:23 +01:00 committed by Boris Brezillon
parent 939da44758
commit 29714d6bd7
1 changed files with 2 additions and 5 deletions
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7
drivers/mtd/nand/raw/nand_base.c
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@ -1274,8 +1274,10 @@ static int nand_setup_data_interface(struct nand_chip *chip, int chipnr)
/* Change the mode on the chip side (if supported by the NAND chip) */ /* Change the mode on the chip side (if supported by the NAND chip) */
if (nand_supports_set_get_features(chip)) { if (nand_supports_set_get_features(chip)) {
chip->select_chip(mtd, chipnr);
ret = nand_set_features(chip, ONFI_FEATURE_ADDR_TIMING_MODE, ret = nand_set_features(chip, ONFI_FEATURE_ADDR_TIMING_MODE,
tmode_param); tmode_param);
chip->select_chip(mtd, -1);
if (ret) if (ret)
return ret; return ret;
} }
@ -2780,10 +2782,8 @@ int nand_reset(struct nand_chip *chip, int chipnr)
if (ret) if (ret)
return ret; return ret;
chip->select_chip(mtd, chipnr);
chip->data_interface = saved_data_intf; chip->data_interface = saved_data_intf;
ret = nand_setup_data_interface(chip, chipnr); ret = nand_setup_data_interface(chip, chipnr);
chip->select_chip(mtd, -1);
if (ret) if (ret)
return ret; return ret;
@ -6505,10 +6505,7 @@ int nand_scan_tail(struct mtd_info *mtd)
/* Enter fastest possible mode on all dies. */ /* Enter fastest possible mode on all dies. */
for (i = 0; i < chip->numchips; i++) { for (i = 0; i < chip->numchips; i++) {
chip->select_chip(mtd, i);
ret = nand_setup_data_interface(chip, i); ret = nand_setup_data_interface(chip, i);
chip->select_chip(mtd, -1);
if (ret) if (ret)
goto err_nand_manuf_cleanup; goto err_nand_manuf_cleanup;
} }