linux-kernel - [PATCH v2 06/32] mtd: rawnand: fsl_elbc: convert driver to nand

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Message-Id: <20180703220029.19565-7-miquel.raynal@bootlin.com>
Date:   Wed,  4 Jul 2018 00:00:03 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Wenyou Yang <wenyou.yang@...rochip.com>,
        Josh Wu <rainyfeeling@...look.com>,
        Tudor Ambarus <Tudor.Ambarus@...rochip.com>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Kamal Dasu <kdasu.kdev@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Han Xu <han.xu@....com>,
        Harvey Hunt <harveyhuntnexus@...il.com>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Sylvain Lemieux <slemieux.tyco@...il.com>,
        Xiaolei Li <xiaolei.li@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>,
        Mans Rullgard <mans@...sr.com>, Stefan Agner <stefan@...er.ch>
Cc:     linux-mtd@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH v2 06/32] mtd: rawnand: fsl_elbc: convert driver to nand_scan()

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@...tlin.com>
---
 drivers/mtd/nand/raw/fsl_elbc_nand.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/mtd/nand/raw/fsl_elbc_nand.c b/drivers/mtd/nand/raw/fsl_elbc_nand.c
index 51f0b340bc0d..e535c8440f63 100644
--- a/drivers/mtd/nand/raw/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/raw/fsl_elbc_nand.c
@@ -637,9 +637,9 @@ static int fsl_elbc_wait(struct mtd_info *mtd, struct nand_chip *chip)
 	return (elbc_fcm_ctrl->mdr & 0xff) | NAND_STATUS_WP;
 }
 
-static int fsl_elbc_chip_init_tail(struct mtd_info *mtd)
+static int fsl_elbc_attach_chip(struct nand_chip *chip)
 {
-	struct nand_chip *chip = mtd_to_nand(mtd);
+	struct mtd_info *mtd = nand_to_mtd(chip);
 	struct fsl_elbc_mtd *priv = nand_get_controller_data(chip);
 	struct fsl_lbc_ctrl *ctrl = priv->ctrl;
 	struct fsl_lbc_regs __iomem *lbc = ctrl->regs;
@@ -910,15 +910,8 @@ static int fsl_elbc_nand_probe(struct platform_device *pdev)
 	if (ret)
 		goto err;
 
-	ret = nand_scan_ident(mtd, 1, NULL);
-	if (ret)
-		goto err;
-
-	ret = fsl_elbc_chip_init_tail(mtd);
-	if (ret)
-		goto err;
-
-	ret = nand_scan_tail(mtd);
+	priv->chip->controller->attach_chip = fsl_elbc_attach_chip;
+	ret = nand_scan(mtd, 1);
 	if (ret)
 		goto err;
 
-- 
2.14.1