From patchwork Tue Jul 3 22:00:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 10505405 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5994660532 for ; Tue, 3 Jul 2018 22:06:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 481DA28C0D for ; Tue, 3 Jul 2018 22:06:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3C17028C16; Tue, 3 Jul 2018 22:06:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C4F0728C0D for ; Tue, 3 Jul 2018 22:06:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=be84o+tvT7QfRvZdbWEYCsrm0UhD3Oe9J593Pd9Hxcs=; b=pEck/0ZafcRmw5wu9xVVfWak1A OnfnGvkQsayFvY0H1JhwnqHk4tW+KxWP8yKigZmh9j4MmfwCQNdCyzUY+XUywUiSBNY7Z8KtsYBg/ 7smBwjd3tRckhQVQmcHIefB2Pq3fyfXD16YUs0c5y/K50X9Uyr0+B+d6h55UfP24cRS9pkNb3/0LR UHNs3InN5SZH/Z+c2tEgibaQpTXc6oApw4PNnLHJimRJDAOEvL+VQoDrgpJcK0JPQkJ1S027Uy3hv bWE7ky23rhT9InPUdltdz1eEr+inLkTwI0mseJBEx4M07geDMaN2+a4Nk2SGOSsPsoJj5kuq7pBG+ PjVowOmg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1faTR8-0000FO-Ih for patchwork-linux-mediatek@patchwork.kernel.org; Tue, 03 Jul 2018 22:06:14 +0000 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1faTM8-0004XZ-PX; Tue, 03 Jul 2018 22:01:22 +0000 Received: by mail.bootlin.com (Postfix, from userid 110) id 58A2B208C4; Wed, 4 Jul 2018 00:00:59 +0200 (CEST) Received: from localhost.localdomain (unknown [91.224.148.103]) by mail.bootlin.com (Postfix) with ESMTPSA id 708A1207DA; Wed, 4 Jul 2018 00:00:55 +0200 (CEST) From: Miquel Raynal To: Wenyou Yang , Josh Wu , Tudor Ambarus , Boris Brezillon , Miquel Raynal , Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut , Nicolas Ferre , Alexandre Belloni , Kamal Dasu , Masahiro Yamada , Han Xu , Harvey Hunt , Vladimir Zapolskiy , Sylvain Lemieux , Xiaolei Li , Matthias Brugger , Maxime Ripard , Chen-Yu Tsai , Marc Gonzalez , Mans Rullgard , Stefan Agner Subject: [PATCH v2 12/32] mtd: rawnand: lpc32xx_mlc: convert driver to nand_scan() Date: Wed, 4 Jul 2018 00:00:09 +0200 Message-Id: <20180703220029.19565-13-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180703220029.19565-1-miquel.raynal@bootlin.com> References: <20180703220029.19565-1-miquel.raynal@bootlin.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180703_150105_457022_EF86A920 X-CRM114-Status: GOOD ( 18.93 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bcm-kernel-feedback-list@broadcom.com, linux-mediatek@lists.infradead.org, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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 --- drivers/mtd/nand/raw/lpc32xx_mlc.c | 105 +++++++++++++++++++------------------ 1 file changed, 55 insertions(+), 50 deletions(-) diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 052d123a8304..d650ed609ba7 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 +654,53 @@ 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; + + /* initially clear interrupt status */ + readb(MLC_IRQ_SR(host->io_base)); + + init_completion(&host->comp_nand); + init_completion(&host->comp_controller); + + host->irq = platform_get_irq(host->pdev, 0); + if (host->irq < 0) { + dev_err(dev, "failed to get platform irq\n"); + return -EINVAL; + } + + if (request_irq(host->irq, (irq_handler_t)&lpc3xxx_nand_irq, + IRQF_TRIGGER_HIGH, DRV_NAME, host)) { + dev_err(dev, "Error requesting NAND IRQ\n"); + return -ENXIO; + } + + return 0; +} + +static void lpc32xx_nand_detach_chip(struct nand_chip *chip) +{ + struct lpc32xx_nand_host *host = nand_get_controller_data(chip); + + free_irq(host->irq, host); +} + /* * Probe for NAND controller */ @@ -669,6 +717,8 @@ 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)) @@ -749,58 +799,15 @@ 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 + * Scan to find existence of the device and get the type of NAND device: + * SMALL block or LARGE block. */ - res = nand_scan_ident(mtd, 1, NULL); + nand_chip->hwcontrol.attach_chip = lpc32xx_nand_attach_chip; + nand_chip->hwcontrol.detach_chip = lpc32xx_nand_detach_chip; + res = nand_scan(mtd, 1); 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)); - - init_completion(&host->comp_nand); - init_completion(&host->comp_controller); - - host->irq = platform_get_irq(pdev, 0); - if (host->irq < 0) { - dev_err(&pdev->dev, "failed to get platform irq\n"); - res = -EINVAL; - goto release_dma_chan; - } - - if (request_irq(host->irq, (irq_handler_t)&lpc3xxx_nand_irq, - IRQF_TRIGGER_HIGH, DRV_NAME, host)) { - dev_err(&pdev->dev, "Error requesting NAND IRQ\n"); - res = -ENXIO; - goto release_dma_chan; - } - - /* - * Fills out all the uninitialized function pointers with the defaults - * And scans for a bad block table if appropriate. - */ - res = nand_scan_tail(mtd); - if (res) - goto free_irq; - mtd->name = DRV_NAME; res = mtd_device_register(mtd, host->ncfg->parts, @@ -812,8 +819,6 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) cleanup_nand: nand_cleanup(nand_chip); -free_irq: - free_irq(host->irq, host); release_dma_chan: if (use_dma) dma_release_channel(host->dma_chan);