From patchwork Sat Jan 1 07:42:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Apurva Nandan X-Patchwork-Id: 529611 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96917C433FE for ; Sat, 1 Jan 2022 07:44:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232116AbiAAHop (ORCPT ); Sat, 1 Jan 2022 02:44:45 -0500 Received: from lelv0143.ext.ti.com ([198.47.23.248]:49364 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232170AbiAAHoo (ORCPT ); Sat, 1 Jan 2022 02:44:44 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 2017iN9C066473; Sat, 1 Jan 2022 01:44:23 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1641023064; bh=2W+ZEwsjEYSO5fmf1B2nM8J2QKPmJ+hSGNrBvEL/lZs=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=pHDWZqsdgMh1aZWIvPdQAuPltOPp39fsQDbc1PK2uiv7SkSQmBuQ51rW9GCQjqBIw pUNBWLJ/bbZp4Jw7XzWujWGN1pPNf0lJj9Evq0rsBWCOWFrPY6BbWRGdyOkc45tkIR micv12ireba371ZjduLttFZElAKjFaVk2nbwK9xI= Received: from DLEE114.ent.ti.com (dlee114.ent.ti.com [157.170.170.25]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 2017iNCr091059 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Sat, 1 Jan 2022 01:44:23 -0600 Received: from DLEE102.ent.ti.com (157.170.170.32) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Sat, 1 Jan 2022 01:44:23 -0600 Received: from fllv0039.itg.ti.com (10.64.41.19) by DLEE102.ent.ti.com (157.170.170.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Sat, 1 Jan 2022 01:44:23 -0600 Received: from LT5CD112GSQZ.ent.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 2017gpwk033162; Sat, 1 Jan 2022 01:44:18 -0600 From: Apurva Nandan To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Mark Brown , Apurva Nandan , Patrice Chotard , Christophe Kerello , Boris Brezillon , Daniel Palmer , Alexander Lobakin , , , CC: Subject: [PATCH v3 15/17] mtd: spianand: winbond: Add change_mode() manufacturer_ops Date: Sat, 1 Jan 2022 13:12:48 +0530 Message-ID: <20220101074250.14443-16-a-nandan@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220101074250.14443-1-a-nandan@ti.com> References: <20220101074250.14443-1-a-nandan@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Add implementation of change_mode() for Winbond's manufacturer_ops, that executes octal_dtr_enable() and octal_dtr_disable() according to requested protocol. Datasheet: https://www.winbond.com/export/sites/winbond/datasheet/W35N01JW_Datasheet_Brief.pdf Signed-off-by: Apurva Nandan --- drivers/mtd/nand/spi/winbond.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c index c7478faf6cee..d8eccb40c80f 100644 --- a/drivers/mtd/nand/spi/winbond.c +++ b/drivers/mtd/nand/spi/winbond.c @@ -242,8 +242,33 @@ static int winbond_spinand_octal_dtr_disable(struct spinand_device *spinand) return 0; } +static int winbond_change_spi_mode(struct spinand_device *spinand, + const enum spinand_protocol protocol) +{ + if (spinand->protocol == protocol) + return 0; + + switch (spinand->protocol) { + case SPINAND_1S_1S_1S: + if (protocol == SPINAND_8D_8D_8D) + return winbond_spinand_octal_dtr_enable(spinand); + break; + + case SPINAND_8D_8D_8D: + if (protocol == SPINAND_1S_1S_1S) + return winbond_spinand_octal_dtr_disable(spinand); + break; + + default: + return -EOPNOTSUPP; + } + + return -EOPNOTSUPP; +} + static const struct spinand_manufacturer_ops winbond_spinand_manuf_ops = { .init = winbond_spinand_init, + .change_mode = winbond_change_spi_mode, }; const struct spinand_manufacturer winbond_spinand_manufacturer = {