From patchwork Wed Jan 29 14:34:16 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 3551691 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A8F5FC02DC for ; Wed, 29 Jan 2014 14:36:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A83FD2015A for ; Wed, 29 Jan 2014 14:36:52 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 78F492018A for ; Wed, 29 Jan 2014 14:36:51 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1W8WFd-0003i8-Gi; Wed, 29 Jan 2014 14:36:25 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1W8WFa-0005Ea-3p; Wed, 29 Jan 2014 14:36:22 +0000 Received: from mail-ee0-x22e.google.com ([2a00:1450:4013:c00::22e]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1W8WEJ-0004xZ-ST; Wed, 29 Jan 2014 14:35:05 +0000 Received: by mail-ee0-f46.google.com with SMTP id c13so927545eek.5 for ; Wed, 29 Jan 2014 06:34:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=YjW7HBb8Lf0zMhmpQ9Wh56Pk3+PmLhSbBwCiRR5StB8=; b=eKE1OjMek22UiWUnarbamAF07YOuSwtUiE29RX7SArTlkFTFYHMYhULDVjRUDg3jQe xKONDR6qxMh1jLk9md7U6GTRMmLte/4SEFI3y/J3GT6r1bjziPJgYE8NShZqN3yVItUV RS+EyAdn20DOpfYLZKN8Ak/na2ss+Jr0/4kcUxNKNluLOW1b6Bi9ESHQJhxUbM9OJicX N+9Lcs4uTM2Tq7gyHlqG380Y80tCp3ZBk5cdKQCG6vPkl3a46DBy11aRKZoNnZd1i7c7 QvaNH2/ddHpXXENO98YKfcAriuIJq1eapGaBfRwk4kC191nhpChN1BscXOijy2vTl90N MRkQ== X-Received: by 10.14.95.2 with SMTP id o2mr3225997eef.69.1391006081750; Wed, 29 Jan 2014 06:34:41 -0800 (PST) Received: from bbrezillon-laptop.int.overkiz.com ([80.245.18.66]) by mx.google.com with ESMTPSA id o43sm9435426eef.12.2014.01.29.06.34.40 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 29 Jan 2014 06:34:41 -0800 (PST) From: Boris BREZILLON To: Maxime Ripard , Rob Landley , Russell King , David Woodhouse , Grant Likely , Brian Norris , Jason Gunthorpe , Arnd Bergmann Subject: [RFC PATCH v2 06/14] of: mtd: add NAND timing mode retrieval support Date: Wed, 29 Jan 2014 15:34:16 +0100 Message-Id: <1391006064-28890-7-git-send-email-b.brezillon.dev@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1391006064-28890-1-git-send-email-b.brezillon.dev@gmail.com> References: <1391006064-28890-1-git-send-email-b.brezillon.dev@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140129_093504_093032_EB65C3DE X-CRM114-Status: GOOD ( 12.14 ) X-Spam-Score: -2.0 (--) Cc: devicetree@vger.kernel.org, Boris BREZILLON , linux-doc@vger.kernel.org, dev@linux-sunxi.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.6 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a function to retrieve NAND timing mode (ONFI timing mode) from a given DT node. Signed-off-by: Boris BREZILLON --- drivers/of/of_mtd.c | 19 +++++++++++++++++++ include/linux/of_mtd.h | 8 ++++++++ 2 files changed, 27 insertions(+) diff --git a/drivers/of/of_mtd.c b/drivers/of/of_mtd.c index e8ced61..63155d4 100644 --- a/drivers/of/of_mtd.c +++ b/drivers/of/of_mtd.c @@ -108,3 +108,22 @@ bool of_get_nand_on_flash_bbt(struct device_node *np) return of_property_read_bool(np, "nand-on-flash-bbt"); } EXPORT_SYMBOL_GPL(of_get_nand_on_flash_bbt); + +/** + * of_get_nand_timings - Get nand timings for the given device_node + * @np: Pointer to the given device_node + * + * return 0 on success errno other wise + */ +int of_get_nand_onfi_timing_mode(struct device_node *np) +{ + int err; + u32 mode; + + err = of_property_read_u32(np, "onfi,nand-timing-mode", &mode); + if (err) + return err; + + return mode; +} +EXPORT_SYMBOL_GPL(of_get_nand_onfi_timing_mode); diff --git a/include/linux/of_mtd.h b/include/linux/of_mtd.h index 3bd8c3b..eb9fda6 100644 --- a/include/linux/of_mtd.h +++ b/include/linux/of_mtd.h @@ -9,6 +9,8 @@ #ifndef __LINUX_OF_MTD_H #define __LINUX_OF_NET_H +#include + #ifdef CONFIG_OF_MTD #include @@ -16,6 +18,7 @@ int of_get_nand_ecc_mode(struct device_node *np); int of_get_nand_ecc_level(struct device_node *np, u32 *strengh, u32 *blk_size); int of_get_nand_bus_width(struct device_node *np); bool of_get_nand_on_flash_bbt(struct device_node *np); +int of_get_nand_onfi_timing_mode(struct device_node *np); #else /* CONFIG_OF_MTD */ @@ -40,6 +43,11 @@ static inline bool of_get_nand_on_flash_bbt(struct device_node *np) return false; } +static inline int of_get_nand_onfi_timing_mode(struct device_node *np) +{ + return -ENOSYS; +} + #endif /* CONFIG_OF_MTD */ #endif /* __LINUX_OF_MTD_H */