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mtd: rawnand: tango: convert driver to nand_scan()

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Two helpers have been added to the core to do all kind of controller
side configuration/initialization between the detection phase and the
final NAND scan. Implement these hooks so that we can convert the driver
to just use nand_scan() instead of the nand_scan_ident() +
nand_scan_tail() pair.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal 2018-07-20 17:15:14 +02:00
parent 2a4d9c16e8
commit 6a9035ceb9
1 changed files with 24 additions and 16 deletions
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40
drivers/mtd/nand/raw/tango_nand.c
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@ -517,6 +517,28 @@ static int tango_set_timings(struct mtd_info *mtd, int csline,
return 0;
}
static int tango_attach_chip(struct nand_chip *chip)
{
struct nand_ecc_ctrl *ecc = &chip->ecc;
ecc->mode = NAND_ECC_HW;
ecc->algo = NAND_ECC_BCH;
ecc->bytes = DIV_ROUND_UP(ecc->strength * FIELD_ORDER, BITS_PER_BYTE);
ecc->read_page_raw = tango_read_page_raw;
ecc->write_page_raw = tango_write_page_raw;
ecc->read_page = tango_read_page;
ecc->write_page = tango_write_page;
ecc->read_oob = tango_read_oob;
ecc->write_oob = tango_write_oob;
return 0;
}
static const struct nand_controller_ops tango_controller_ops = {
.attach_chip = tango_attach_chip,
};
static int chip_init(struct device *dev, struct device_node *np)
{
u32 cs;
@ -566,22 +588,7 @@ static int chip_init(struct device *dev, struct device_node *np)
mtd_set_ooblayout(mtd, &tango_nand_ooblayout_ops);
mtd->dev.parent = dev;
err = nand_scan_ident(mtd, 1, NULL);
if (err)
return err;
ecc->mode = NAND_ECC_HW;
ecc->algo = NAND_ECC_BCH;
ecc->bytes = DIV_ROUND_UP(ecc->strength * FIELD_ORDER, BITS_PER_BYTE);
ecc->read_page_raw = tango_read_page_raw;
ecc->write_page_raw = tango_write_page_raw;
ecc->read_page = tango_read_page;
ecc->write_page = tango_write_page;
ecc->read_oob = tango_read_oob;
ecc->write_oob = tango_write_oob;
err = nand_scan_tail(mtd);
err = nand_scan(mtd, 1);
if (err)
return err;
@ -655,6 +662,7 @@ static int tango_nand_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, nfc);
nand_controller_init(&nfc->hw);
nfc->hw.ops = &tango_controller_ops;
nfc->freq_kHz = clk_get_rate(clk) / 1000;
for_each_child_of_node(pdev->dev.of_node, np) {