From patchwork Thu Nov 7 15:17:24 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ezequiel Garcia X-Patchwork-Id: 289395 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:770:15f::2]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id F1B9C2C00C8 for ; Fri, 8 Nov 2013 02:24:31 +1100 (EST) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VeRQm-0008Gt-OF; Thu, 07 Nov 2013 15:23:37 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VeRQF-0002JI-VI; Thu, 07 Nov 2013 15:23:03 +0000 Received: from top.free-electrons.com ([176.31.233.9] helo=mail.free-electrons.com) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VeROY-00022O-IA; Thu, 07 Nov 2013 15:21:19 +0000 Received: by mail.free-electrons.com (Postfix, from userid 106) id D41DB855; Thu, 7 Nov 2013 16:21:10 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT, URIBL_BLOCKED shortcircuit=ham autolearn=disabled version=3.3.2 Received: from localhost.localdomain (unknown [190.2.98.212]) by mail.free-electrons.com (Postfix) with ESMTPA id 27637968; Thu, 7 Nov 2013 16:19:12 +0100 (CET) From: Ezequiel Garcia To: , , Subject: [PATCH v4 20/31] mtd: nand: pxa3xx: Add helper function to set page address Date: Thu, 7 Nov 2013 12:17:24 -0300 Message-Id: <1383837455-30721-21-git-send-email-ezequiel.garcia@free-electrons.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1383837455-30721-1-git-send-email-ezequiel.garcia@free-electrons.com> References: <1383837455-30721-1-git-send-email-ezequiel.garcia@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131107_102118_718237_8E85D4AB X-CRM114-Status: GOOD ( 10.72 ) X-Spam-Score: -1.2 (-) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-1.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.7 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Lior Amsalem , Thomas Petazzoni , Jason Cooper , Tawfik Bayouk , Daniel Mack , Huang Shijie , Ezequiel Garcia , Gregory Clement , Brian Norris , Willy Tarreau X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Let's simplify the code by first introducing a helper function to set the page address, as done by the READ0, READOOB and SEQIN commands. Signed-off-by: Ezequiel Garcia --- drivers/mtd/nand/pxa3xx_nand.c | 36 +++++++++++++++++++++--------------- 1 file changed, 21 insertions(+), 15 deletions(-) diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index aa8768c..660427e 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -587,6 +587,26 @@ static inline int is_buf_blank(uint8_t *buf, size_t len) return 1; } +static void set_command_address(struct pxa3xx_nand_info *info, + unsigned int page_size, uint16_t column, int page_addr) +{ + /* small page addr setting */ + if (page_size < PAGE_CHUNK_SIZE) { + info->ndcb1 = ((page_addr & 0xFFFFFF) << 8) + | (column & 0xFF); + + info->ndcb2 = 0; + } else { + info->ndcb1 = ((page_addr & 0xFFFF) << 16) + | (column & 0xFFFF); + + if (page_addr & 0xFF0000) + info->ndcb2 = (page_addr & 0xFF0000) >> 16; + else + info->ndcb2 = 0; + } +} + static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, uint16_t column, int page_addr) { @@ -650,22 +670,8 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, info->ndcb0 |= NDCB0_DBC | (NAND_CMD_READSTART << 8); case NAND_CMD_SEQIN: - /* small page addr setting */ - if (unlikely(mtd->writesize < PAGE_CHUNK_SIZE)) { - info->ndcb1 = ((page_addr & 0xFFFFFF) << 8) - | (column & 0xFF); - - info->ndcb2 = 0; - } else { - info->ndcb1 = ((page_addr & 0xFFFF) << 16) - | (column & 0xFFFF); - - if (page_addr & 0xFF0000) - info->ndcb2 = (page_addr & 0xFF0000) >> 16; - else - info->ndcb2 = 0; - } + set_command_address(info, mtd->writesize, column, page_addr); info->buf_count = mtd->writesize + mtd->oobsize; memset(info->data_buff, 0xFF, info->buf_count);