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authorMiquel Raynal <miquel.raynal@bootlin.com>2018-07-20 18:15:11 +0300
committerMiquel Raynal <miquel.raynal@bootlin.com>2018-07-31 10:46:02 +0300
commit5f20da0fe8af638266a5e8449ab5ebfe6112c2c0 (patch)
treec9dde2d6c3a8f1fb67b889ab5446135ac7dd6de2 /drivers
parent127483187a4afc143d59cb2809ccdb9399f7d27e (diff)
downloadlinux-5f20da0fe8af638266a5e8449ab5ebfe6112c2c0.tar.xz
mtd: rawnand: sh_flctl: 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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/nand/raw/sh_flctl.c36
1 files changed, 15 insertions, 21 deletions
diff --git a/drivers/mtd/nand/raw/sh_flctl.c b/drivers/mtd/nand/raw/sh_flctl.c
index c7abceffcc40..bb8866e05ff7 100644
--- a/drivers/mtd/nand/raw/sh_flctl.c
+++ b/drivers/mtd/nand/raw/sh_flctl.c
@@ -1002,10 +1002,17 @@ static void flctl_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
flctl->index += len;
}
-static int flctl_chip_init_tail(struct mtd_info *mtd)
+static int flctl_chip_attach_chip(struct nand_chip *chip)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
struct sh_flctl *flctl = mtd_to_flctl(mtd);
- struct nand_chip *chip = &flctl->chip;
+
+ /*
+ * NAND_BUSWIDTH_16 may have been set by nand_scan_ident().
+ * Add the SEL_16BIT flag in flctl->flcmncr_base.
+ */
+ if (chip->options & NAND_BUSWIDTH_16)
+ flctl->flcmncr_base |= SEL_16BIT;
if (mtd->writesize == 512) {
flctl->page_size = 0;
@@ -1063,6 +1070,10 @@ static int flctl_chip_init_tail(struct mtd_info *mtd)
return 0;
}
+static const struct nand_controller_ops flctl_nand_controller_ops = {
+ .attach_chip = flctl_chip_attach_chip,
+};
+
static irqreturn_t flctl_handle_flste(int irq, void *dev_id)
{
struct sh_flctl *flctl = dev_id;
@@ -1191,25 +1202,8 @@ static int flctl_probe(struct platform_device *pdev)
flctl_setup_dma(flctl);
- ret = nand_scan_ident(flctl_mtd, 1, NULL);
- if (ret)
- goto err_chip;
-
- if (nand->options & NAND_BUSWIDTH_16) {
- /*
- * NAND_BUSWIDTH_16 may have been set by nand_scan_ident().
- * Add the SEL_16BIT flag in pdata->flcmncr_val and re-assign
- * flctl->flcmncr_base to pdata->flcmncr_val.
- */
- pdata->flcmncr_val |= SEL_16BIT;
- flctl->flcmncr_base = pdata->flcmncr_val;
- }
-
- ret = flctl_chip_init_tail(flctl_mtd);
- if (ret)
- goto err_chip;
-
- ret = nand_scan_tail(flctl_mtd);
+ nand->dummy_controller.ops = &flctl_nand_controller_ops;
+ ret = nand_scan(flctl_mtd, 1);
if (ret)
goto err_chip;