From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fiJtr-0000Iu-Df for linux-mtd@lists.infradead.org; Wed, 25 Jul 2018 13:32:23 +0000 From: Miquel Raynal To: Boris Brezillon , Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut Cc: linux-mtd@lists.infradead.org, Wenyou Yang , Josh Wu , Stefan Agner , Lucas Stach , Miquel Raynal Subject: [PATCH v5 03/17] mtd: rawnand: lpc32xx_mlc: convert driver to nand_scan() Date: Wed, 25 Jul 2018 15:31:38 +0200 Message-Id: <20180725133152.30898-4-miquel.raynal@bootlin.com> In-Reply-To: <20180725133152.30898-1-miquel.raynal@bootlin.com> References: <20180725133152.30898-1-miquel.raynal@bootlin.com> List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 --- drivers/mtd/nand/raw/lpc32xx_mlc.c | 61 +++++++++++++++++++++----------------- 1 file changed, 33 insertions(+), 28 deletions(-) diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 052d123a8304..e82abada130a 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -184,6 +184,7 @@ static struct nand_bbt_descr lpc32xx_nand_bbt_mirror = { }; struct lpc32xx_nand_host { + struct platform_device *pdev; struct nand_chip nand_chip; struct lpc32xx_mlc_platform_data *pdata; struct clk *clk; @@ -653,6 +654,32 @@ static struct lpc32xx_nand_cfg_mlc *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); + struct device *dev = &host->pdev->dev; + + host->dma_buf = devm_kzalloc(dev, mtd->writesize, GFP_KERNEL); + if (!host->dma_buf) + return -ENOMEM; + + host->dummy_buf = devm_kzalloc(dev, mtd->writesize, GFP_KERNEL); + if (!host->dummy_buf) + return -ENOMEM; + + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.size = 512; + mtd_set_ooblayout(mtd, &lpc32xx_ooblayout_ops); + host->mlcsubpages = mtd->writesize / 512; + + return 0; +} + +static const struct nand_controller_ops lpc32xx_nand_controller_ops = { + .attach_chip = lpc32xx_nand_attach_chip, +}; + /* * Probe for NAND controller */ @@ -669,6 +696,8 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) if (!host) return -ENOMEM; + host->pdev = pdev; + rc = platform_get_resource(pdev, IORESOURCE_MEM, 0); host->io_base = devm_ioremap_resource(&pdev->dev, rc); if (IS_ERR(host->io_base)) @@ -748,31 +777,6 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) } } - /* - * Scan to find existance of the device and - * Get the type of NAND device SMALL block or LARGE block - */ - res = nand_scan_ident(mtd, 1, NULL); - if (res) - goto release_dma_chan; - - host->dma_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL); - if (!host->dma_buf) { - res = -ENOMEM; - goto release_dma_chan; - } - - host->dummy_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL); - if (!host->dummy_buf) { - res = -ENOMEM; - goto release_dma_chan; - } - - nand_chip->ecc.mode = NAND_ECC_HW; - nand_chip->ecc.size = 512; - mtd_set_ooblayout(mtd, &lpc32xx_ooblayout_ops); - host->mlcsubpages = mtd->writesize / 512; - /* initially clear interrupt status */ readb(MLC_IRQ_SR(host->io_base)); @@ -794,10 +798,11 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) } /* - * Fills out all the uninitialized function pointers with the defaults - * And scans for a bad block table if appropriate. + * Scan to find existence of the device and get the type of NAND device: + * SMALL block or LARGE block. */ - res = nand_scan_tail(mtd); + nand_chip->dummy_controller.ops = &lpc32xx_nand_controller_ops; + res = nand_scan(mtd, 1); if (res) goto free_irq; -- 2.14.1