From mboxrd@z Thu Jan 1 00:00:00 1970 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 4A28DC433EF for ; Mon, 21 Feb 2022 08:55:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345920AbiBUIzr (ORCPT ); Mon, 21 Feb 2022 03:55:47 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:42098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345761AbiBUIxv (ORCPT ); Mon, 21 Feb 2022 03:53:51 -0500 Received: from ssl.serverraum.org (ssl.serverraum.org [IPv6:2a01:4f8:151:8464::1:2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6730E20F63 for ; Mon, 21 Feb 2022 00:52:59 -0800 (PST) Received: from mwalle01.kontron.local. (unknown [213.135.10.150]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id 1CC012241C; Mon, 21 Feb 2022 09:52:57 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1645433577; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hXOPL5cPITB5pX8C9uT9seIIQT64+6BMqwNdfPuDNQU=; b=MWguSWwaIzFTuaiOKjDDM566EktAVFfB1WJWd/dQOffn/KruYyb7NbbiQjjQZKj6RN9Ndj FY0V07GBlhSkYqY7s5fk/iuOJetmO/fzCNthQbto6hAprhhWYLTbEAj2zs7RzwRlAP0qPl blV045ZsVv/jE4nzQmrTRs/48Dz+dU4= From: Michael Walle To: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Tudor Ambarus , Pratyush Yadav , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , yaliang.wang@windriver.com, Michael Walle Subject: [PATCH v3 18/32] mtd: spi-nor: allow a flash to define its own ready() function Date: Mon, 21 Feb 2022 09:52:22 +0100 Message-Id: <20220221085236.1452024-19-michael@walle.cc> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220221085236.1452024-1-michael@walle.cc> References: <20220221085236.1452024-1-michael@walle.cc> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Xilinx and Micron flashes have their own implementation of the spi_nor_ready() function. At the moment, the core will figure out which one to call according to some flags. Lay the foundation to make it possible that a flash can register its own ready() function. Signed-off-by: Michael Walle Reviewed-by: Tudor Ambarus Reviewed-by: Pratyush Yadav --- drivers/mtd/spi-nor/core.c | 4 ++++ drivers/mtd/spi-nor/core.h | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index 4d2036cdce42..390a9ab413b7 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -794,6 +794,10 @@ static int spi_nor_ready(struct spi_nor *nor) { int sr, fsr; + /* Flashes might override the standard routine. */ + if (nor->params->ready) + return nor->params->ready(nor); + if (nor->flags & SNOR_F_READY_XSR_RDY) sr = spi_nor_xsr_ready(nor); else diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h index 4fe16b5aa3f5..fdc8c0f31f5c 100644 --- a/drivers/mtd/spi-nor/core.h +++ b/drivers/mtd/spi-nor/core.h @@ -261,6 +261,9 @@ struct spi_nor_otp { * SPI NOR flashes that have peculiarities to the SPI NOR * standard e.g. different opcodes, specific address * calculation, page size, etc. + * @ready: (optional) flashes might use a different mechanism + * than reading the status register to indicate they + * are ready for a new command * @locking_ops: SPI NOR locking methods. */ struct spi_nor_flash_parameter { @@ -282,6 +285,7 @@ struct spi_nor_flash_parameter { int (*set_4byte_addr_mode)(struct spi_nor *nor, bool enable); u32 (*convert_addr)(struct spi_nor *nor, u32 addr); int (*setup)(struct spi_nor *nor, const struct spi_nor_hwcaps *hwcaps); + int (*ready)(struct spi_nor *nor); const struct spi_nor_locking_ops *locking_ops; }; -- 2.30.2