From patchwork Mon Apr 23 09:23:36 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 154357 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:4978:20e::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 531B2B7014 for ; Mon, 23 Apr 2012 19:25:22 +1000 (EST) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1SMFVJ-0006YY-Py; Mon, 23 Apr 2012 09:24:17 +0000 Received: from casper.infradead.org ([2001:770:15f::2]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1SMFV9-0006Tb-EW for linux-mtd@merlin.infradead.org; Mon, 23 Apr 2012 09:24:07 +0000 Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by casper.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1SMFV5-0005Qk-LL for linux-mtd@lists.infradead.org; Mon, 23 Apr 2012 09:24:05 +0000 Received: from dude.hi.pengutronix.de ([2001:6f8:1178:2:21e:67ff:fe11:9c5c]) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1SMFUp-0005il-Rn; Mon, 23 Apr 2012 11:23:47 +0200 Received: from ukl by dude.hi.pengutronix.de with local (Exim 4.77) (envelope-from ) id 1SMFUp-0005pd-OY; Mon, 23 Apr 2012 11:23:47 +0200 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= To: linux-mtd@lists.infradead.org Subject: [PATCH 04/10] mtd: mxc_nand: split some functions to get rid of more nfc_is_vX() Date: Mon, 23 Apr 2012 11:23:36 +0200 Message-Id: <1335173022-22371-4-git-send-email-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 1.7.10 In-Reply-To: <20120423092240.GA18013@pengutronix.de> References: <20120423092240.GA18013@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:6f8:1178:2:21e:67ff:fe11:9c5c X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-mtd@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20120423_102404_578400_CAEF1388 X-CRM114-Status: GOOD ( 23.12 ) X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.3.2 on casper.infradead.org summary: Content analysis details: (-1.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 T_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: devicetree-discuss@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-mtd-bounces@lists.infradead.org Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Signed-off-by: Uwe Kleine-König --- drivers/mtd/nand/mxc_nand.c | 109 +++++++++++++++++++++++++++++++------------ 1 file changed, 80 insertions(+), 29 deletions(-) diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 1672e4b..c9cdec2 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -151,6 +151,7 @@ struct mxc_nand_devtype_data { uint16_t (*get_dev_status)(struct mxc_nand_host *); int (*check_int)(struct mxc_nand_host *); void (*irq_control)(struct mxc_nand_host *, int); + u32 (*get_ecc_status)(struct mxc_nand_host *); }; struct mxc_nand_host { @@ -325,6 +326,21 @@ static void irq_control(struct mxc_nand_host *host, int activate) } } +static u32 get_ecc_status_v1(struct mxc_nand_host *host) +{ + return readw(NFC_V1_V2_ECC_STATUS_RESULT); +} + +static u32 get_ecc_status_v2(struct mxc_nand_host *host) +{ + return readl(NFC_V1_V2_ECC_STATUS_RESULT); +} + +static u32 get_ecc_status_v3(struct mxc_nand_host *host) +{ + return readl(NFC_V3_ECC_STATUS_RESULT); +} + static irqreturn_t mxc_nfc_irq(int irq, void *dev_id) { struct mxc_nand_host *host = dev_id; @@ -445,13 +461,27 @@ static void send_page_v3(struct mtd_info *mtd, unsigned int ops) wait_op_done(host, false); } -static void send_page_v1_v2(struct mtd_info *mtd, unsigned int ops) +static void send_page_v2(struct mtd_info *mtd, unsigned int ops) +{ + struct nand_chip *nand_chip = mtd->priv; + struct mxc_nand_host *host = nand_chip->priv; + + /* NANDFC buffer 0 is used for page read/write */ + writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR); + + writew(ops, NFC_V1_V2_CONFIG2); + + /* Wait for operation to complete */ + wait_op_done(host, true); +} + +static void send_page_v1(struct mtd_info *mtd, unsigned int ops) { struct nand_chip *nand_chip = mtd->priv; struct mxc_nand_host *host = nand_chip->priv; int bufs, i; - if (nfc_is_v1() && mtd->writesize > 512) + if (mtd->writesize > 512) bufs = 4; else bufs = 1; @@ -567,7 +597,7 @@ static int mxc_nand_correct_data_v1(struct mtd_info *mtd, u_char *dat, * additional correction. 2-Bit errors cannot be corrected by * HW ECC, so we need to return failure */ - uint16_t ecc_status = readw(NFC_V1_V2_ECC_STATUS_RESULT); + uint16_t ecc_status = get_ecc_status_v1(host); if (((ecc_status & 0x3) == 2) || ((ecc_status >> 2) == 2)) { pr_debug("MXC_NAND: HWECC uncorrectable 2-bit ECC error\n"); @@ -592,10 +622,7 @@ static int mxc_nand_correct_data_v2_v3(struct mtd_info *mtd, u_char *dat, no_subpages = mtd->writesize >> 9; - if (nfc_is_v21()) - ecc_stat = readl(NFC_V1_V2_ECC_STATUS_RESULT); - else - ecc_stat = readl(NFC_V3_ECC_STATUS_RESULT); + ecc_stat = host->devtype_data->get_ecc_status(host); do { err = ecc_stat & ecc_bit_mask; @@ -822,7 +849,7 @@ static int get_eccsize(struct mtd_info *mtd) return 8; } -static void preset_v1_v2(struct mtd_info *mtd) +static void preset_v1(struct mtd_info *mtd) { struct nand_chip *nand_chip = mtd->priv; struct mxc_nand_host *host = nand_chip->priv; @@ -831,13 +858,40 @@ static void preset_v1_v2(struct mtd_info *mtd) if (nand_chip->ecc.mode == NAND_ECC_HW) config1 |= NFC_V1_V2_CONFIG1_ECC_EN; - if (nfc_is_v21()) - config1 |= NFC_V2_CONFIG1_FP_INT; + if (!host->irqpending_quirk) + config1 |= NFC_V1_V2_CONFIG1_INT_MSK; + + host->eccsize = 1; + + writew(config1, NFC_V1_V2_CONFIG1); + /* preset operation */ + + /* Unlock the internal RAM Buffer */ + writew(0x2, NFC_V1_V2_CONFIG); + + /* Blocks to be unlocked */ + writew(0x0, NFC_V1_UNLOCKSTART_BLKADDR); + writew(0xffff, NFC_V1_UNLOCKEND_BLKADDR); + + /* Unlock Block Command for given address range */ + writew(0x4, NFC_V1_V2_WRPROT); +} + +static void preset_v2(struct mtd_info *mtd) +{ + struct nand_chip *nand_chip = mtd->priv; + struct mxc_nand_host *host = nand_chip->priv; + uint16_t config1 = 0; + + if (nand_chip->ecc.mode == NAND_ECC_HW) + config1 |= NFC_V1_V2_CONFIG1_ECC_EN; + + config1 |= NFC_V2_CONFIG1_FP_INT; if (!host->irqpending_quirk) config1 |= NFC_V1_V2_CONFIG1_INT_MSK; - if (nfc_is_v21() && mtd->writesize) { + if (mtd->writesize) { uint16_t pages_per_block = mtd->erasesize / mtd->writesize; host->eccsize = get_eccsize(mtd); @@ -856,20 +910,14 @@ static void preset_v1_v2(struct mtd_info *mtd) writew(0x2, NFC_V1_V2_CONFIG); /* Blocks to be unlocked */ - if (nfc_is_v21()) { - writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR0); - writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR1); - writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR2); - writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR3); - writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR0); - writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR1); - writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR2); - writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR3); - } else if (nfc_is_v1()) { - writew(0x0, NFC_V1_UNLOCKSTART_BLKADDR); - writew(0xffff, NFC_V1_UNLOCKEND_BLKADDR); - } else - BUG(); + writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR0); + writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR1); + writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR2); + writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR3); + writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR0); + writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR1); + writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR2); + writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR3); /* Unlock Block Command for given address range */ writew(0x4, NFC_V1_V2_WRPROT); @@ -1057,26 +1105,28 @@ static struct nand_bbt_descr bbt_mirror_descr = { /* v1: 21, 27, 31 */ static const struct mxc_nand_devtype_data imx21_nand_devtype_data = { - .preset = preset_v1_v2, + .preset = preset_v1, .send_cmd = send_cmd_v1_v2, .send_addr = send_addr_v1_v2, - .send_page = send_page_v1_v2, + .send_page = send_page_v1, .send_read_id = send_read_id_v1_v2, .get_dev_status = get_dev_status_v1_v2, .check_int = check_int_v1_v2, .irq_control = irq_control_v1_v2, + .get_ecc_status = get_ecc_status_v1, }; /* v21: 25, 35 */ static const struct mxc_nand_devtype_data imx25_nand_devtype_data = { - .preset = preset_v1_v2, + .preset = preset_v2, .send_cmd = send_cmd_v1_v2, .send_addr = send_addr_v1_v2, - .send_page = send_page_v1_v2, + .send_page = send_page_v2, .send_read_id = send_read_id_v1_v2, .get_dev_status = get_dev_status_v1_v2, .check_int = check_int_v1_v2, .irq_control = irq_control_v1_v2, + .get_ecc_status = get_ecc_status_v2, }; /* v3: 51, 53 */ @@ -1089,6 +1139,7 @@ static const struct mxc_nand_devtype_data imx51_nand_devtype_data = { .get_dev_status = get_dev_status_v3, .check_int = check_int_v3, .irq_control = irq_control_v3, + .get_ecc_status = get_ecc_status_v3, }; static int __init mxcnd_probe(struct platform_device *pdev)