From patchwork Fri Jun 25 19:17:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pratyush Yadav X-Patchwork-Id: 1497395 X-Patchwork-Delegate: jagannadh.teki@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256 header.s=ti-com-17Q1 header.b=xy7/+wUA; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (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 4GBRbs3YjYz9sW6 for ; Sat, 26 Jun 2021 05:18:00 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id A419C82C13; Fri, 25 Jun 2021 21:17:45 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.b="xy7/+wUA"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 82D9282C09; Fri, 25 Jun 2021 21:17:41 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL,SPF_HELO_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id F263E82C03 for ; Fri, 25 Jun 2021 21:17:37 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=p.yadav@ti.com Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 15PJHadi078259; Fri, 25 Jun 2021 14:17:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1624648656; bh=Q3D5fXVQIwK+nTF8kIsH+UDkkjlugLwaIocrv26NLp0=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=xy7/+wUA2w58F6ZPTPq/848clYd+PcdU/tNfh3HrgzjTo1UwYfnyQ4rwOGR0cRUDL zE78XNh9Pkufg1LOC6IVgu1bmaWeyliRp+uvZc0al4weqzEwjd9+KTkBqUy9CIlkSe tdmXldfB6nM7AiDLyT+nEbjX003wQpSSjMNH9VqI= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 15PJHaVZ023085 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 25 Jun 2021 14:17:36 -0500 Received: from DFLE112.ent.ti.com (10.64.6.33) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 25 Jun 2021 14:17:36 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Fri, 25 Jun 2021 14:17:36 -0500 Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 15PJHURH076530; Fri, 25 Jun 2021 14:17:33 -0500 From: Pratyush Yadav To: Jagan Teki , Vignesh R , Ryder Lee , Weijie Gao , Chunfeng Yun , GSS_MTK_Uboot_upstream , CC: Pratyush Yadav Subject: [PATCH v10 01/27] spi: spi-mem: allow specifying whether an op is DTR or not Date: Sat, 26 Jun 2021 00:47:03 +0530 Message-ID: <20210625191729.31798-2-p.yadav@ti.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210625191729.31798-1-p.yadav@ti.com> References: <20210625191729.31798-1-p.yadav@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean Each phase is given a separate 'dtr' field so mixed protocols like 4S-4D-4D can be supported. Signed-off-by: Pratyush Yadav --- drivers/spi/spi-mem.c | 3 +++ include/spi-mem.h | 8 ++++++++ 2 files changed, 11 insertions(+) diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index c095ae9505..427f7c13c5 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -164,6 +164,9 @@ bool spi_mem_default_supports_op(struct spi_slave *slave, op->data.dir == SPI_MEM_DATA_OUT)) return false; + if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr) + return false; + return true; } EXPORT_SYMBOL_GPL(spi_mem_default_supports_op); diff --git a/include/spi-mem.h b/include/spi-mem.h index e354c38897..8bd4459674 100644 --- a/include/spi-mem.h +++ b/include/spi-mem.h @@ -71,6 +71,7 @@ enum spi_mem_data_dir { * struct spi_mem_op - describes a SPI memory operation * @cmd.buswidth: number of IO lines used to transmit the command * @cmd.opcode: operation opcode + * @cmd.dtr: whether the command opcode should be sent in DTR mode or not * @addr.nbytes: number of address bytes to send. Can be zero if the operation * does not need to send an address * @addr.buswidth: number of IO lines used to transmit the address cycles @@ -78,10 +79,13 @@ enum spi_mem_data_dir { * Note that only @addr.nbytes are taken into account in this * address value, so users should make sure the value fits in the * assigned number of bytes. + * @addr.dtr: whether the address should be sent in DTR mode or not * @dummy.nbytes: number of dummy bytes to send after an opcode or address. Can * be zero if the operation does not require dummy bytes * @dummy.buswidth: number of IO lanes used to transmit the dummy bytes + * @dummy.dtr: whether the dummy bytes should be sent in DTR mode or not * @data.buswidth: number of IO lanes used to send/receive the data + * @data.dtr: whether the data should be sent in DTR mode or not * @data.dir: direction of the transfer * @data.buf.in: input buffer * @data.buf.out: output buffer @@ -90,21 +94,25 @@ struct spi_mem_op { struct { u8 buswidth; u8 opcode; + u8 dtr : 1; } cmd; struct { u8 nbytes; u8 buswidth; + u8 dtr : 1; u64 val; } addr; struct { u8 nbytes; u8 buswidth; + u8 dtr : 1; } dummy; struct { u8 buswidth; + u8 dtr : 1; enum spi_mem_data_dir dir; unsigned int nbytes; /* buf.{in,out} must be DMA-able. */