From patchwork Tue Sep 11 06:17:03 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huang Shijie X-Patchwork-Id: 1435711 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 01C214025E for ; Tue, 11 Sep 2012 06:47:02 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TBKAv-0000P9-2f; Tue, 11 Sep 2012 06:42:21 +0000 Received: from tx2ehsobe005.messaging.microsoft.com ([65.55.88.15] helo=tx2outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TBK9q-0008GS-8r; Tue, 11 Sep 2012 06:41:17 +0000 Received: from mail226-tx2-R.bigfish.com (10.9.14.252) by TX2EHSOBE002.bigfish.com (10.9.40.22) with Microsoft SMTP Server id 14.1.225.23; Tue, 11 Sep 2012 06:41:12 +0000 Received: from mail226-tx2 (localhost [127.0.0.1]) by mail226-tx2-R.bigfish.com (Postfix) with ESMTP id 813672401EC; Tue, 11 Sep 2012 06:41:12 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzzz1202h1d1ah1082kzz8275bhz2dh2a8h668h839hd24he5bhf0ah107ah1288h12a5h12bdh1155h) Received: from mail226-tx2 (localhost.localdomain [127.0.0.1]) by mail226-tx2 (MessageSwitch) id 1347345670744012_11688; Tue, 11 Sep 2012 06:41:10 +0000 (UTC) Received: from TX2EHSMHS026.bigfish.com (unknown [10.9.14.239]) by mail226-tx2.bigfish.com (Postfix) with ESMTP id AFEB8940046; Tue, 11 Sep 2012 06:41:10 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by TX2EHSMHS026.bigfish.com (10.9.99.126) with Microsoft SMTP Server (TLS) id 14.1.225.23; Tue, 11 Sep 2012 06:41:10 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-002.039d.mgd.msft.net (10.84.1.15) with Microsoft SMTP Server (TLS) id 14.2.309.3; Tue, 11 Sep 2012 01:41:09 -0500 Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id q8B6f1ZG002040; Mon, 10 Sep 2012 23:41:07 -0700 From: Huang Shijie To: Subject: [PATCH 1/9] mtd: add helpers to set/get features for ONFI nand Date: Tue, 11 Sep 2012 14:17:03 +0800 Message-ID: <1347344231-10295-2-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1347344231-10295-1-git-send-email-b32955@freescale.com> References: <1347344231-10295-1-git-send-email-b32955@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-Spam-Note: CRM114 invocation failed X-Spam-Score: -4.2 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [65.55.88.15 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: dirk.behme@de.bosch.com, vikram186@gmail.com, Huang Shijie , linux-mtd@lists.infradead.org, ffainelli@freebox.fr, shawn.guo@linaro.org, dwmw2@infradead.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add the set-features(0xef)/get-features(0xee) helpers for ONFI nand. Also add the necessary macros. Signed-off-by: Huang Shijie --- drivers/mtd/nand/nand_base.c | 50 ++++++++++++++++++++++++++++++++++++++++++ include/linux/mtd/nand.h | 14 +++++++++++ 2 files changed, 64 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 88f671c..d06a80d 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2700,6 +2700,50 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) } /** + * nand_onfi_set_features- [REPLACEABLE] set features for ONFI nand + * @mtd: MTD device structure + * @chip: nand chip info structure + * @addr: feature address. + * @subfeature_param: the subfeature parameters, a four bytes array. + */ +static int nand_onfi_set_features(struct mtd_info *mtd, struct nand_chip *chip, + int addr, uint8_t *subfeature_param) +{ + int status; + + if (!chip->onfi_version) + return -EINVAL; + + chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, addr, -1); + chip->write_buf(mtd, subfeature_param, ONFI_SUBFEATURE_PARAM_LEN); + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) + return -EIO; + return 0; +} + +/** + * nand_onfi_get_features- [REPLACEABLE] get features for ONFI nand + * @mtd: MTD device structure + * @chip: nand chip info structure + * @addr: feature address. + * @subfeature_param: the subfeature parameters, a four bytes array. + */ +static int nand_onfi_get_features(struct mtd_info *mtd, struct nand_chip *chip, + int addr, uint8_t *subfeature_param) +{ + if (!chip->onfi_version) + return -EINVAL; + + /* clear the sub feature parameters */ + memset(subfeature_param, 0, ONFI_SUBFEATURE_PARAM_LEN); + + chip->cmdfunc(mtd, NAND_CMD_GET_FEATURES, addr, -1); + chip->read_buf(mtd, subfeature_param, ONFI_SUBFEATURE_PARAM_LEN); + return 0; +} + +/** * nand_suspend - [MTD Interface] Suspend the NAND flash * @mtd: MTD device structure */ @@ -3223,6 +3267,12 @@ int nand_scan_tail(struct mtd_info *mtd) if (!chip->write_page) chip->write_page = nand_write_page; + /* set for ONFI nand */ + if (!chip->onfi_set_features) + chip->onfi_set_features = nand_onfi_set_features; + if (!chip->onfi_get_features) + chip->onfi_get_features = nand_onfi_get_features; + /* * Check ECC mode, default to software if 3byte/512byte hardware ECC is * selected and we have 256 byte pagesize fallback to software ECC diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8f99d36..537f59c 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -92,6 +92,8 @@ extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); #define NAND_CMD_READID 0x90 #define NAND_CMD_ERASE2 0xd0 #define NAND_CMD_PARAM 0xec +#define NAND_CMD_GET_FEATURES 0xee +#define NAND_CMD_SET_FEATURES 0xef #define NAND_CMD_RESET 0xff #define NAND_CMD_LOCK 0x2a @@ -229,6 +231,12 @@ typedef enum { /* Keep gcc happy */ struct nand_chip; +/* ONFI feature address */ +#define ONFI_FEATURE_ADDR_TIMING_MODE 0x1 + +/* ONFI subfeature parameters length */ +#define ONFI_SUBFEATURE_PARAM_LEN 4 + struct nand_onfi_params { /* rev info and features block */ /* 'O' 'N' 'F' 'I' */ @@ -452,6 +460,8 @@ struct nand_buffers { * non 0 if ONFI supported. * @onfi_params: [INTERN] holds the ONFI page parameter when ONFI is * supported, 0 otherwise. + * @onfi_set_features [REPLACEABLE] set the features for ONFI nand + * @onfi_get_features [REPLACEABLE] get the features for ONFI nand * @ecclayout: [REPLACEABLE] the default ECC placement scheme * @bbt: [INTERN] bad block table pointer * @bbt_td: [REPLACEABLE] bad block table descriptor for flash @@ -494,6 +504,10 @@ struct nand_chip { int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf, int oob_required, int page, int cached, int raw); + int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip, + int feature_addr, uint8_t *subfeature_para); + int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip, + int feature_addr, uint8_t *subfeature_para); int chip_delay; unsigned int options;