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Subject[PATCH v4 26/35] mtd: rawnand: atmel: convert driver to nand_scan()
Date
Two helpers have been added to the core to make ECC-related
configuration between the detection phase and the final NAND scan. Use
these hooks and convert the driver to just use nand_scan() instead of
both nand_scan_ident() and nand_scan_tail().

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/nand/raw/atmel/nand-controller.c | 83 ++++++++++++++--------------
1 file changed, 40 insertions(+), 43 deletions(-)

diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c
index 855cc7729c43..0bc7e2abc885 100644
--- a/drivers/mtd/nand/raw/atmel/nand-controller.c
+++ b/drivers/mtd/nand/raw/atmel/nand-controller.c
@@ -202,7 +202,7 @@ struct atmel_nand_controller_ops {
int (*remove)(struct atmel_nand_controller *nc);
void (*nand_init)(struct atmel_nand_controller *nc,
struct atmel_nand *nand);
- int (*ecc_init)(struct atmel_nand *nand);
+ int (*ecc_init)(struct nand_chip *chip);
int (*setup_data_interface)(struct atmel_nand *nand, int csline,
const struct nand_data_interface *conf);
};
@@ -1133,9 +1133,8 @@ static int atmel_nand_pmecc_init(struct nand_chip *chip)
return 0;
}

-static int atmel_nand_ecc_init(struct atmel_nand *nand)
+static int atmel_nand_ecc_init(struct nand_chip *chip)
{
- struct nand_chip *chip = &nand->base;
struct atmel_nand_controller *nc;
int ret;

@@ -1170,12 +1169,11 @@ static int atmel_nand_ecc_init(struct atmel_nand *nand)
return 0;
}

-static int atmel_hsmc_nand_ecc_init(struct atmel_nand *nand)
+static int atmel_hsmc_nand_ecc_init(struct nand_chip *chip)
{
- struct nand_chip *chip = &nand->base;
int ret;

- ret = atmel_nand_ecc_init(nand);
+ ret = atmel_nand_ecc_init(chip);
if (ret)
return ret;

@@ -1558,22 +1556,6 @@ static void atmel_hsmc_nand_init(struct atmel_nand_controller *nc,
chip->select_chip = atmel_hsmc_nand_select_chip;
}

-static int atmel_nand_detect(struct atmel_nand *nand)
-{
- struct nand_chip *chip = &nand->base;
- struct mtd_info *mtd = nand_to_mtd(chip);
- struct atmel_nand_controller *nc;
- int ret;
-
- nc = to_nand_controller(chip->controller);
-
- ret = nand_scan_ident(mtd, nand->numcs, NULL);
- if (ret)
- dev_err(nc->dev, "nand_scan_ident() failed: %d\n", ret);
-
- return ret;
-}
-
static int atmel_nand_unregister(struct atmel_nand *nand)
{
struct nand_chip *chip = &nand->base;
@@ -1595,7 +1577,6 @@ static int atmel_nand_register(struct atmel_nand *nand)
struct nand_chip *chip = &nand->base;
struct mtd_info *mtd = nand_to_mtd(chip);
struct atmel_nand_controller *nc;
- int ret;

nc = to_nand_controller(chip->controller);

@@ -1626,21 +1607,6 @@ static int atmel_nand_register(struct atmel_nand *nand)
}
}

- ret = nand_scan_tail(mtd);
- if (ret) {
- dev_err(nc->dev, "nand_scan_tail() failed: %d\n", ret);
- return ret;
- }
-
- ret = mtd_device_register(mtd, NULL, 0);
- if (ret) {
- dev_err(nc->dev, "Failed to register mtd device: %d\n", ret);
- nand_cleanup(chip);
- return ret;
- }
-
- list_add_tail(&nand->node, &nc->chips);
-
return 0;
}

@@ -1755,6 +1721,8 @@ static int
atmel_nand_controller_add_nand(struct atmel_nand_controller *nc,
struct atmel_nand *nand)
{
+ struct nand_chip *chip = &nand->base;
+ struct mtd_info *mtd = nand_to_mtd(chip);
int ret;

/* No card inserted, skip this NAND. */
@@ -1765,15 +1733,30 @@ atmel_nand_controller_add_nand(struct atmel_nand_controller *nc,

nc->caps->ops->nand_init(nc, nand);

- ret = atmel_nand_detect(nand);
- if (ret)
+ ret = nand_scan(mtd, nand->numcs);
+ if (ret) {
+ dev_err(nc->dev, "NAND scan failed: %d\n", ret);
return ret;
+ }

- ret = nc->caps->ops->ecc_init(nand);
+ ret = atmel_nand_register(nand);
if (ret)
- return ret;
+ goto cleanup_nand;
+
+ ret = mtd_device_register(mtd, NULL, 0);
+ if (ret) {
+ dev_err(nc->dev, "Failed to register mtd device: %d\n", ret);
+ goto cleanup_nand;
+ }
+
+ list_add_tail(&nand->node, &nc->chips);
+
+ return 0;
+
+cleanup_nand:
+ nand_cleanup(chip);

- return atmel_nand_register(nand);
+ return ret;
}

static int
@@ -1958,6 +1941,19 @@ static const struct of_device_id atmel_matrix_of_ids[] = {
{ /* sentinel */ },
};

+static int atmel_nand_attach_chip(struct nand_chip *chip)
+{
+ struct atmel_nand_controller *nc;
+
+ nc = to_nand_controller(chip->controller);
+
+ return nc->caps->ops->ecc_init(chip);
+}
+
+static const struct nand_controller_ops atmel_nand_controller_ops = {
+ .attach_chip = atmel_nand_attach_chip,
+};
+
static int atmel_nand_controller_init(struct atmel_nand_controller *nc,
struct platform_device *pdev,
const struct atmel_nand_controller_caps *caps)
@@ -1967,6 +1963,7 @@ static int atmel_nand_controller_init(struct atmel_nand_controller *nc,
int ret;

nand_controller_init(&nc->base);
+ nc->base.ops = &atmel_nand_controller_ops;
INIT_LIST_HEAD(&nc->chips);
nc->dev = dev;
nc->caps = caps;
--
2.14.1
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