From patchwork Tue Jul 3 22:00:11 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 10505495 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 5A36F60225 for ; Tue, 3 Jul 2018 22:37:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 48FF428A1F for ; Tue, 3 Jul 2018 22:37:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3BF4328A29; Tue, 3 Jul 2018 22:37:54 +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 9524128A1F for ; Tue, 3 Jul 2018 22:37:53 +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=000K+awHe3uWiVnXd1uXQHeV1pQsWz/t1zjIcHBmd4k=; b=Kyixrp2DOT7LMtyIEkYh9Dlqum E42NjyI50D1ujbnahZdzigsCDuXKyB4I98WvhLVy+1ECn77leUhxDANjFuFaf0ETU2HPLRSgIu5CG 3p1ViejJyO1Wfp1hHZbqS20a67Uw4gVxyItIdLUX3v0lKbnxhQCUsYAd+kExTcCwHWmpDclmY0Wm/ FaLPEnidZAQHBO2QmGfjVkSjSiMsF0+Vx4iAyEbHIleHLTof4Pm11MCypTVHfp2TyjbDgr1L09UuQ JVcbi/H0vj9Px36Y866lMVOOgnmtsH7iylA5gUHv+LLQHpsVUOhW528Wm7tkb1p8H48W2V8ep52JJ Jj9rHCAA==; 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 1faTvg-00087Z-V2; Tue, 03 Jul 2018 22:37:48 +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 1faTM8-0004aE-P1; Tue, 03 Jul 2018 22:01:31 +0000 Received: by mail.bootlin.com (Postfix, from userid 110) id 4DED92090B; Wed, 4 Jul 2018 00:01:02 +0200 (CEST) Received: from localhost.localdomain (unknown [91.224.148.103]) by mail.bootlin.com (Postfix) with ESMTPSA id CB240208B3; Wed, 4 Jul 2018 00:01:00 +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 14/32] mtd: rawnand: marvell: convert driver to nand_scan() Date: Wed, 4 Jul 2018 00:00:11 +0200 Message-Id: <20180703220029.19565-15-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_753157_CB10B044 X-CRM114-Status: GOOD ( 24.13 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=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/marvell_nand.c | 201 +++++++++++++++++++----------------- 1 file changed, 104 insertions(+), 97 deletions(-) diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c index ba6889bbe802..ed4a0419962a 100644 --- a/drivers/mtd/nand/raw/marvell_nand.c +++ b/drivers/mtd/nand/raw/marvell_nand.c @@ -2295,6 +2295,107 @@ static int marvell_nfc_setup_data_interface(struct mtd_info *mtd, int chipnr, return 0; } +static int marvell_nand_attach_chip(struct nand_chip *chip) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip); + struct marvell_nfc *nfc = to_marvell_nfc(chip->controller); + struct pxa3xx_nand_platform_data *pdata = dev_get_platdata(nfc->dev); + int ret; + + if (pdata && pdata->flash_bbt) + chip->bbt_options |= NAND_BBT_USE_FLASH; + + if (chip->bbt_options & NAND_BBT_USE_FLASH) { + /* + * We'll use a bad block table stored in-flash and don't + * allow writing the bad block marker to the flash. + */ + chip->bbt_options |= NAND_BBT_NO_OOB_BBM; + chip->bbt_td = &bbt_main_descr; + chip->bbt_md = &bbt_mirror_descr; + } + + /* Save the chip-specific fields of NDCR */ + marvell_nand->ndcr = NDCR_PAGE_SZ(mtd->writesize); + if (chip->options & NAND_BUSWIDTH_16) + marvell_nand->ndcr |= NDCR_DWIDTH_M | NDCR_DWIDTH_C; + + /* + * On small page NANDs, only one cycle is needed to pass the + * column address. + */ + if (mtd->writesize <= 512) { + marvell_nand->addr_cyc = 1; + } else { + marvell_nand->addr_cyc = 2; + marvell_nand->ndcr |= NDCR_RA_START; + } + + /* + * Now add the number of cycles needed to pass the row + * address. + * + * Addressing a chip using CS 2 or 3 should also need the third row + * cycle but due to inconsistance in the documentation and lack of + * hardware to test this situation, this case is not supported. + */ + if (chip->options & NAND_ROW_ADDR_3) + marvell_nand->addr_cyc += 3; + else + marvell_nand->addr_cyc += 2; + + if (pdata) { + chip->ecc.size = pdata->ecc_step_size; + chip->ecc.strength = pdata->ecc_strength; + } + + ret = marvell_nand_ecc_init(mtd, &chip->ecc); + if (ret) { + dev_err(nfc->dev, "ECC init failed: %d\n", ret); + return ret; + } + + if (chip->ecc.mode == NAND_ECC_HW) { + /* + * Subpage write not available with hardware ECC, prohibit also + * subpage read as in userspace subpage access would still be + * allowed and subpage write, if used, would lead to numerous + * uncorrectable ECC errors. + */ + chip->options |= NAND_NO_SUBPAGE_WRITE; + } + + if (pdata || nfc->caps->legacy_of_bindings) { + /* + * We keep the MTD name unchanged to avoid breaking platforms + * where the MTD cmdline parser is used and the bootloader + * has not been updated to use the new naming scheme. + */ + mtd->name = "pxa3xx_nand-0"; + } else if (!mtd->name) { + /* + * If the new bindings are used and the bootloader has not been + * updated to pass a new mtdparts parameter on the cmdline, you + * should define the following property in your NAND node, ie: + * + * label = "main-storage"; + * + * This way, mtd->name will be set by the core when + * nand_set_flash_node() is called. + */ + mtd->name = devm_kasprintf(nfc->dev, GFP_KERNEL, + "%s:nand.%d", dev_name(nfc->dev), + marvell_nand->sels[0].cs); + if (!mtd->name) { + dev_err(nfc->dev, "Failed to allocate mtd->name\n"); + return -ENOMEM; + } + } + + return 0; +} + static int marvell_nand_chip_init(struct device *dev, struct marvell_nfc *nfc, struct device_node *np) { @@ -2437,105 +2538,11 @@ static int marvell_nand_chip_init(struct device *dev, struct marvell_nfc *nfc, marvell_nand->ndtr1 = readl_relaxed(nfc->regs + NDTR1); chip->options |= NAND_BUSWIDTH_AUTO; - ret = nand_scan_ident(mtd, marvell_nand->nsels, NULL); - if (ret) { - dev_err(dev, "could not identify the nand chip\n"); - return ret; - } - - if (pdata && pdata->flash_bbt) - chip->bbt_options |= NAND_BBT_USE_FLASH; - - if (chip->bbt_options & NAND_BBT_USE_FLASH) { - /* - * We'll use a bad block table stored in-flash and don't - * allow writing the bad block marker to the flash. - */ - chip->bbt_options |= NAND_BBT_NO_OOB_BBM; - chip->bbt_td = &bbt_main_descr; - chip->bbt_md = &bbt_mirror_descr; - } - - /* Save the chip-specific fields of NDCR */ - marvell_nand->ndcr = NDCR_PAGE_SZ(mtd->writesize); - if (chip->options & NAND_BUSWIDTH_16) - marvell_nand->ndcr |= NDCR_DWIDTH_M | NDCR_DWIDTH_C; - - /* - * On small page NANDs, only one cycle is needed to pass the - * column address. - */ - if (mtd->writesize <= 512) { - marvell_nand->addr_cyc = 1; - } else { - marvell_nand->addr_cyc = 2; - marvell_nand->ndcr |= NDCR_RA_START; - } - - /* - * Now add the number of cycles needed to pass the row - * address. - * - * Addressing a chip using CS 2 or 3 should also need the third row - * cycle but due to inconsistance in the documentation and lack of - * hardware to test this situation, this case is not supported. - */ - if (chip->options & NAND_ROW_ADDR_3) - marvell_nand->addr_cyc += 3; - else - marvell_nand->addr_cyc += 2; - - if (pdata) { - chip->ecc.size = pdata->ecc_step_size; - chip->ecc.strength = pdata->ecc_strength; - } - - ret = marvell_nand_ecc_init(mtd, &chip->ecc); - if (ret) { - dev_err(dev, "ECC init failed: %d\n", ret); - return ret; - } - - if (chip->ecc.mode == NAND_ECC_HW) { - /* - * Subpage write not available with hardware ECC, prohibit also - * subpage read as in userspace subpage access would still be - * allowed and subpage write, if used, would lead to numerous - * uncorrectable ECC errors. - */ - chip->options |= NAND_NO_SUBPAGE_WRITE; - } - - if (pdata || nfc->caps->legacy_of_bindings) { - /* - * We keep the MTD name unchanged to avoid breaking platforms - * where the MTD cmdline parser is used and the bootloader - * has not been updated to use the new naming scheme. - */ - mtd->name = "pxa3xx_nand-0"; - } else if (!mtd->name) { - /* - * If the new bindings are used and the bootloader has not been - * updated to pass a new mtdparts parameter on the cmdline, you - * should define the following property in your NAND node, ie: - * - * label = "main-storage"; - * - * This way, mtd->name will be set by the core when - * nand_set_flash_node() is called. - */ - mtd->name = devm_kasprintf(nfc->dev, GFP_KERNEL, - "%s:nand.%d", dev_name(nfc->dev), - marvell_nand->sels[0].cs); - if (!mtd->name) { - dev_err(nfc->dev, "Failed to allocate mtd->name\n"); - return -ENOMEM; - } - } - ret = nand_scan_tail(mtd); + chip->controller->attach_chip = marvell_nand_attach_chip; + ret = nand_scan(mtd, marvell_nand->nsels); if (ret) { - dev_err(dev, "nand_scan_tail failed: %d\n", ret); + dev_err(dev, "could not scan the nand chip\n"); return ret; }