From patchwork Mon Oct 28 09:55:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mason Yang X-Patchwork-Id: 1185271 X-Patchwork-Delegate: miquel.raynal@bootlin.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=mxic.com.tw Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="c6y5yqfs"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 471qFm6lqcz9sPL for ; Mon, 28 Oct 2019 20:30:36 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=jEMwGeGO+0nO06YpPxz6vCdUZT3FElETXCamQja1rnc=; b=c6y5yqfslMeogCbRQNN9ANvlWH PBgq98ABxvHKMI9B3UiytN8UytEDLPujIQgc5/ZqiGPu7KnXGhuwZDf5oEQOpkYP4XNo6yBbWwXut oFnO9n2mUwEXGjuv/Q7qxPEiQST/xWj3BQI7D7AEpgJSNv4w15/CFg1Qb6ooDP7buzy3ucYh7umjN G0eithLApU55uFt0yxxE8lbErUxS9Y6DRTvw6/bwXxpJIvMOeOpZVy71g76ZNuK+qfg9hwt37luNK obEILtRiEevmU9VNc48uxj91VYBROdQshZmuL1DEIp4+2YXkM9B3CII5B2pZlMX/0XY6fZ1dUTxwS zE/EVT2A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iP1MA-0002Du-7e; Mon, 28 Oct 2019 09:30:34 +0000 Received: from twhmllg4.macronix.com ([211.75.127.132]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iP1Ly-00022K-Is for linux-mtd@lists.infradead.org; Mon, 28 Oct 2019 09:30:24 +0000 Received: from localhost.localdomain ([172.17.195.96]) by TWHMLLG4.macronix.com with ESMTP id x9S9TQPQ013435; Mon, 28 Oct 2019 17:29:30 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) From: Mason Yang To: miquel.raynal@bootlin.com, richard@nod.at, marek.vasut@gmail.com, dwmw2@infradead.org, bbrezillon@kernel.org, computersforpeace@gmail.com, vigneshr@ti.com Subject: [PATCH v2 4/4] mtd: rawnand: Add support Macronix deep power down mode Date: Mon, 28 Oct 2019 17:55:27 +0800 Message-Id: <1572256527-5074-5-git-send-email-masonccyang@mxic.com.tw> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1572256527-5074-1-git-send-email-masonccyang@mxic.com.tw> References: <1572256527-5074-1-git-send-email-masonccyang@mxic.com.tw> X-MAIL: TWHMLLG4.macronix.com x9S9TQPQ013435 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191028_023022_897451_1297EEAF X-CRM114-Status: GOOD ( 12.49 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [211.75.127.132 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: juliensu@mxic.com.tw, masonccyang@mxic.com.tw, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Macronix AD series support deep power down mode for a minimum power consumption state. Patch nand_suspend() & nand_resume() by Macronix specific deep power down mode command and exit it. Signed-off-by: Mason Yang --- drivers/mtd/nand/raw/nand_macronix.c | 72 +++++++++++++++++++++++++++++++++++- 1 file changed, 70 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c index 13929bf..3098bc0 100644 --- a/drivers/mtd/nand/raw/nand_macronix.c +++ b/drivers/mtd/nand/raw/nand_macronix.c @@ -15,6 +15,8 @@ #define MXIC_BLOCK_PROTECTION_ALL_LOCK 0x38 #define MXIC_BLOCK_PROTECTION_ALL_UNLOCK 0x0 +#define NAND_CMD_POWER_DOWN 0xB9 + struct nand_onfi_vendor_macronix { u8 reserved; u8 reliability_func; @@ -137,13 +139,66 @@ static int mxic_nand_unlock(struct nand_chip *chip, loff_t ofs, uint64_t len) return ret; } +int nand_power_down_op(struct nand_chip *chip) +{ + int ret; + + if (nand_has_exec_op(chip)) { + struct nand_op_instr instrs[] = { + NAND_OP_CMD(NAND_CMD_POWER_DOWN, 0), + }; + + struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs); + + ret = nand_exec_op(chip, &op); + if (ret) + return ret; + + } else { + chip->legacy.cmdfunc(chip, NAND_CMD_POWER_DOWN, -1, -1); + } + + return 0; +} + +static int mxic_nand_suspend(struct nand_chip *chip) +{ + int ret; + + nand_select_target(chip, 0); + ret = nand_power_down_op(chip); + if (ret < 0) + pr_err("%s called for chip into suspend failed\n", __func__); + nand_deselect_target(chip); + + return ret; +} + +static void mxic_nand_resume(struct nand_chip *chip) +{ + /* + * Toggle #CS pin to resume NAND device and don't care + * of the others CLE, #WE, #RE pins status. + * Here sending power down command to toggle #CS line. + */ + nand_select_target(chip, 0); + nand_power_down_op(chip); + nand_deselect_target(chip); +} + /* - * Macronix NAND AC series support Block Protection by SET_FEATURES + * Macronix NAND AC & AD series support Block Protection by SET_FEATURES * to lock/unlock blocks. */ static int macronix_nand_init(struct nand_chip *chip) { - bool blockprotected = false; + unsigned int i; + bool blockprotected = false, powerdown = false; + static const char * const power_down_dev[] = { + "MX30LF1G28AD", + "MX30LF2G28AD", + "MX30LF4G28AD", + }; if (nand_is_slc(chip)) chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE; @@ -153,6 +208,14 @@ static int macronix_nand_init(struct nand_chip *chip) macronix_nand_onfi_init(chip); + for (i = 0; i < ARRAY_SIZE(power_down_dev); i++) { + if (!strcmp(power_down_dev[i], chip->parameters.model)) { + blockprotected = true; + powerdown = true; + break; + } + } + if (blockprotected) { bitmap_set(chip->parameters.set_feature_list, ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1); @@ -163,6 +226,11 @@ static int macronix_nand_init(struct nand_chip *chip) chip->_unlock = mxic_nand_unlock; } + if (powerdown) { + chip->_suspend = mxic_nand_suspend; + chip->_resume = mxic_nand_resume; + } + return 0; }