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Subject[PATCH v4 18/35] mtd: rawnand: s3c2410: 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/s3c2410.c | 30 +++++++++++++-----------------
1 file changed, 13 insertions(+), 17 deletions(-)

diff --git a/drivers/mtd/nand/raw/s3c2410.c b/drivers/mtd/nand/raw/s3c2410.c
index e8bf64832213..c21e8892394a 100644
--- a/drivers/mtd/nand/raw/s3c2410.c
+++ b/drivers/mtd/nand/raw/s3c2410.c
@@ -915,20 +915,19 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
}

/**
- * s3c2410_nand_update_chip - post probe update
- * @info: The controller instance.
- * @nmtd: The driver version of the MTD instance.
+ * s3c2410_nand_attach_chip - Init the ECC engine after NAND scan
+ * @chip: The NAND chip
*
- * This routine is called after the chip probe has successfully completed
- * and the relevant per-chip information updated. This call ensure that
+ * This hook is called by the core after the identification of the NAND chip,
+ * once the relevant per-chip information is up to date.. This call ensure that
* we update the internal state accordingly.
*
* The internal state is currently limited to the ECC state information.
*/
-static int s3c2410_nand_update_chip(struct s3c2410_nand_info *info,
- struct s3c2410_nand_mtd *nmtd)
+static int s3c2410_nand_attach_chip(struct nand_chip *chip)
{
- struct nand_chip *chip = &nmtd->chip;
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);

switch (chip->ecc.mode) {

@@ -998,6 +997,10 @@ static int s3c2410_nand_update_chip(struct s3c2410_nand_info *info,
return 0;
}

+static const struct nand_controller_ops s3c24xx_nand_controller_ops = {
+ .attach_chip = s3c2410_nand_attach_chip,
+};
+
static const struct of_device_id s3c24xx_nand_dt_ids[] = {
{
.compatible = "samsung,s3c2410-nand",
@@ -1095,6 +1098,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, info);

nand_controller_init(&info->controller);
+ info->controller.ops = &s3c24xx_nand_controller_ops;

/* get the clock source and enable it */

@@ -1166,15 +1170,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
mtd->dev.parent = &pdev->dev;
s3c2410_nand_init_chip(info, nmtd, sets);

- err = nand_scan_ident(mtd, (sets) ? sets->nr_chips : 1, NULL);
- if (err)
- goto exit_error;
-
- err = s3c2410_nand_update_chip(info, nmtd);
- if (err < 0)
- goto exit_error;
-
- err = nand_scan_tail(mtd);
+ err = nand_scan(mtd, sets ? sets->nr_chips : 1);
if (err)
goto exit_error;

--
2.14.1
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