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

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 17:15:13 +02:00
parent 5f20da0fe8
commit 2a4d9c16e8
1 changed files with 19 additions and 24 deletions
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43
drivers/mtd/nand/raw/sunxi_nand.c
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@ -1814,12 +1814,21 @@ static void sunxi_nand_ecc_cleanup(struct nand_ecc_ctrl *ecc)
}
}
static int sunxi_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc,
struct device_node *np)
static int sunxi_nand_attach_chip(struct nand_chip *nand)
{
struct nand_chip *nand = mtd_to_nand(mtd);
struct mtd_info *mtd = nand_to_mtd(nand);
struct nand_ecc_ctrl *ecc = &nand->ecc;
struct device_node *np = nand_get_flash_node(nand);
int ret;
if (nand->bbt_options & NAND_BBT_USE_FLASH)
nand->bbt_options |= NAND_BBT_NO_OOB;
if (nand->options & NAND_NEED_SCRAMBLING)
nand->options |= NAND_NO_SUBPAGE_WRITE;
nand->options |= NAND_SUBPAGE_READ;
if (!ecc->size) {
ecc->size = nand->ecc_step_ds;
ecc->strength = nand->ecc_strength_ds;
@ -1844,6 +1853,10 @@ static int sunxi_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc,
return 0;
}
static const struct nand_controller_ops sunxi_nand_controller_ops = {
.attach_chip = sunxi_nand_attach_chip,
};
static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
struct device_node *np)
{
@ -1909,6 +1922,8 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
/* Default tR value specified in the ONFI spec (chapter 4.15.1) */
nand->chip_delay = 200;
nand->controller = &nfc->controller;
nand->controller->ops = &sunxi_nand_controller_ops;
/*
* Set the ECC mode to the default value in case nothing is specified
* in the DT.
@ -1925,30 +1940,10 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
mtd = nand_to_mtd(nand);
mtd->dev.parent = dev;
ret = nand_scan_ident(mtd, nsels, NULL);
ret = nand_scan(mtd, nsels);
if (ret)
return ret;
if (nand->bbt_options & NAND_BBT_USE_FLASH)
nand->bbt_options |= NAND_BBT_NO_OOB;
if (nand->options & NAND_NEED_SCRAMBLING)
nand->options |= NAND_NO_SUBPAGE_WRITE;
nand->options |= NAND_SUBPAGE_READ;
ret = sunxi_nand_ecc_init(mtd, &nand->ecc, np);
if (ret) {
dev_err(dev, "ECC init failed: %d\n", ret);
return ret;
}
ret = nand_scan_tail(mtd);
if (ret) {
dev_err(dev, "nand_scan_tail failed: %d\n", ret);
return ret;
}
ret = mtd_device_register(mtd, NULL, 0);
if (ret) {
dev_err(dev, "failed to register mtd device: %d\n", ret);