From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E47DECDFBB for ; Fri, 20 Jul 2018 15:16:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E6F89204EC for ; Fri, 20 Jul 2018 15:16:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E6F89204EC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388158AbeGTQEs (ORCPT ); Fri, 20 Jul 2018 12:04:48 -0400 Received: from mail.bootlin.com ([62.4.15.54]:54598 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388119AbeGTQEr (ORCPT ); Fri, 20 Jul 2018 12:04:47 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id CDD07209BD; Fri, 20 Jul 2018 17:16:01 +0200 (CEST) Received: from localhost.localdomain (AAubervilliers-681-1-78-122.w90-88.abo.wanadoo.fr [90.88.20.122]) by mail.bootlin.com (Postfix) with ESMTPSA id 596C3209C2; Fri, 20 Jul 2018 17:15:46 +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 Cc: linux-mtd@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-mediatek@lists.infradead.org Subject: [PATCH v4 31/35] mtd: rawnand: jz4740: convert driver to nand_scan() Date: Fri, 20 Jul 2018 17:15:23 +0200 Message-Id: <20180720151527.16038-32-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180720151527.16038-1-miquel.raynal@bootlin.com> References: <20180720151527.16038-1-miquel.raynal@bootlin.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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/jz4740_nand.c | 46 ++++++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 17 deletions(-) diff --git a/drivers/mtd/nand/raw/jz4740_nand.c b/drivers/mtd/nand/raw/jz4740_nand.c index 9bb8a89e09f9..8f821fdf8a1c 100644 --- a/drivers/mtd/nand/raw/jz4740_nand.c +++ b/drivers/mtd/nand/raw/jz4740_nand.c @@ -59,6 +59,7 @@ struct jz_nand { struct nand_chip chip; + struct platform_device *pdev; void __iomem *base; struct resource *mem; @@ -329,8 +330,8 @@ static int jz_nand_detect_bank(struct platform_device *pdev, writel(ctrl, nand->base + JZ_REG_NAND_CTRL); if (chipnr == 0) { - /* Detect first chip. */ - ret = nand_scan_ident(mtd, 1, NULL); + /* Detect the first chip and register it */ + ret = nand_scan(mtd, 1); if (ret) goto notfound_id; @@ -367,6 +368,25 @@ static int jz_nand_detect_bank(struct platform_device *pdev, return ret; } +static int jz_nand_attach_chip(struct nand_chip *chip) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + struct jz_nand *nand = mtd_to_jz_nand(mtd); + struct device *dev = mtd->dev.parent; + struct jz_nand_platform_data *pdata = dev_get_platdata(dev); + + if (pdata && pdata->ident_callback) { + pdata->ident_callback(nand->pdev, mtd, &pdata->partitions, + &pdata->num_partitions); + } + + return 0; +} + +static const struct nand_controller_ops jz_nand_controller_ops = { + .attach_chip = jz_nand_attach_chip, +}; + static int jz_nand_probe(struct platform_device *pdev) { int ret; @@ -397,6 +417,7 @@ static int jz_nand_probe(struct platform_device *pdev) mtd = nand_to_mtd(chip); mtd->dev.parent = &pdev->dev; mtd->name = "jz4740-nand"; + nand->pdev = pdev; chip->ecc.hwctl = jz_nand_hwctl; chip->ecc.calculate = jz_nand_calculate_ecc_rs; @@ -410,6 +431,7 @@ static int jz_nand_probe(struct platform_device *pdev) chip->chip_delay = 50; chip->cmd_ctrl = jz_nand_cmd_ctrl; chip->select_chip = jz_nand_select_chip; + chip->dummy_controller.ops = &jz_nand_controller_ops; if (nand->busy_gpio) chip->dev_ready = jz_nand_dev_ready; @@ -450,20 +472,10 @@ static int jz_nand_probe(struct platform_device *pdev) else nand->banks[chipnr] = 0; } + if (chipnr == 0) { dev_err(&pdev->dev, "No NAND chips found\n"); - goto err_iounmap_mmio; - } - - if (pdata && pdata->ident_callback) { - pdata->ident_callback(pdev, mtd, &pdata->partitions, - &pdata->num_partitions); - } - - ret = nand_scan_tail(mtd); - if (ret) { - dev_err(&pdev->dev, "Failed to scan NAND\n"); - goto err_unclaim_banks; + goto err_nand_release; } ret = mtd_device_register(mtd, pdata ? pdata->partitions : NULL, @@ -471,15 +483,13 @@ static int jz_nand_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "Failed to add mtd device\n"); - goto err_nand_release; + goto err_unclaim_banks; } dev_info(&pdev->dev, "Successfully registered JZ4740 NAND driver\n"); return 0; -err_nand_release: - nand_release(mtd); err_unclaim_banks: while (chipnr--) { unsigned char bank = nand->banks[chipnr]; @@ -487,6 +497,8 @@ static int jz_nand_probe(struct platform_device *pdev) nand->bank_base[bank - 1]); } writel(0, nand->base + JZ_REG_NAND_CTRL); +err_nand_release: + nand_release(mtd); err_iounmap_mmio: jz_nand_iounmap_resource(nand->mem, nand->base); err_free: -- 2.14.1