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Subject[PATCH v2 13/32] mtd: rawnand: lpc32xx_slc: 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/lpc32xx_slc.c | 73 ++++++++++++++++++++------------------
1 file changed, 38 insertions(+), 35 deletions(-)

diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c
index 42820aa1abab..c31efac1f9f5 100644
--- a/drivers/mtd/nand/raw/lpc32xx_slc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_slc.c
@@ -779,6 +779,42 @@ static struct lpc32xx_nand_cfg_slc *lpc32xx_parse_dt(struct device *dev)
return ncfg;
}

+static int lpc32xx_nand_attach_chip(struct nand_chip *chip)
+{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ struct lpc32xx_nand_host *host = nand_get_controller_data(chip);
+
+ /* OOB and ECC CPU and DMA work areas */
+ host->ecc_buf = (uint32_t *)(host->data_buf + LPC32XX_DMA_DATA_SIZE);
+
+ /*
+ * Small page FLASH has a unique OOB layout, but large and huge
+ * page FLASH use the standard layout. Small page FLASH uses a
+ * custom BBT marker layout.
+ */
+ if (mtd->writesize <= 512)
+ mtd_set_ooblayout(mtd, &lpc32xx_ooblayout_ops);
+
+ /* These sizes remain the same regardless of page size */
+ chip->ecc.size = 256;
+ chip->ecc.bytes = LPC32XX_SLC_DEV_ECC_BYTES;
+ chip->ecc.prepad = 0;
+ chip->ecc.postpad = 0;
+
+ /*
+ * Use a custom BBT marker setup for small page FLASH that
+ * won't interfere with the ECC layout. Large and huge page
+ * FLASH use the standard layout.
+ */
+ if ((chip->bbt_options & NAND_BBT_USE_FLASH) &&
+ mtd->writesize <= 512) {
+ chip->bbt_td = &bbt_smallpage_main_descr;
+ chip->bbt_md = &bbt_smallpage_mirror_descr;
+ }
+
+ return 0;
+}
+
/*
* Probe for NAND controller
*/
@@ -884,41 +920,8 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
}

/* Find NAND device */
- res = nand_scan_ident(mtd, 1, NULL);
- if (res)
- goto release_dma;
-
- /* OOB and ECC CPU and DMA work areas */
- host->ecc_buf = (uint32_t *)(host->data_buf + LPC32XX_DMA_DATA_SIZE);
-
- /*
- * Small page FLASH has a unique OOB layout, but large and huge
- * page FLASH use the standard layout. Small page FLASH uses a
- * custom BBT marker layout.
- */
- if (mtd->writesize <= 512)
- mtd_set_ooblayout(mtd, &lpc32xx_ooblayout_ops);
-
- /* These sizes remain the same regardless of page size */
- chip->ecc.size = 256;
- chip->ecc.bytes = LPC32XX_SLC_DEV_ECC_BYTES;
- chip->ecc.prepad = chip->ecc.postpad = 0;
-
- /*
- * Use a custom BBT marker setup for small page FLASH that
- * won't interfere with the ECC layout. Large and huge page
- * FLASH use the standard layout.
- */
- if ((chip->bbt_options & NAND_BBT_USE_FLASH) &&
- mtd->writesize <= 512) {
- chip->bbt_td = &bbt_smallpage_main_descr;
- chip->bbt_md = &bbt_smallpage_mirror_descr;
- }
-
- /*
- * Fills out all the uninitialized function pointers with the defaults
- */
- res = nand_scan_tail(mtd);
+ chip->hwcontrol.attach_chip = lpc32xx_nand_attach_chip;
+ res = nand_scan(mtd, 1);
if (res)
goto release_dma;

--
2.14.1
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