From patchwork Thu Jan 22 19:36:41 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda Delgado X-Patchwork-Id: 5687721 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 64B6FC058D for ; Thu, 22 Jan 2015 19:39:10 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 838A1201C0 for ; Thu, 22 Jan 2015 19:39:09 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E5FCC201BB for ; Thu, 22 Jan 2015 19:39:04 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YENZ8-0008OM-CL; Thu, 22 Jan 2015 19:37:18 +0000 Received: from mail-la0-x22c.google.com ([2a00:1450:4010:c03::22c]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YENZ2-0008FT-6N for linux-arm-kernel@lists.infradead.org; Thu, 22 Jan 2015 19:37:13 +0000 Received: by mail-la0-f44.google.com with SMTP id s18so3594897lam.3 for ; Thu, 22 Jan 2015 11:36:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id; bh=R6+0059MtkEFN+IOoDB9gCwqHrNUi/HjYlcZQ8ibBnQ=; b=QtBjBbxCydMLad1PZ6iN/oISemPdpKlaJWU6hkf1ozow3oxUQpJa4X2z3O1lNKKNNa OSjR2qNnbbt8u5rJYh9OsbjkRJbftEIUADDtJAJlQQLuNiMDq2/QVRa1/mUduCxxuQmt p0XOVM9XLdqP5QDSMePmgxXOoNNqA8ZANYrr/pDY2h6P5XSsmLqmd6KpPZtU0gyebw5l 22PcoC83n1Uzu6hxDarJX7FWzb5bUSMzgDU7rknwZu7B/igWHEWzt1zEKBY2W+92hK04 3QtpdMXGUsoIs6G6Mwr2qobPeF4WklHC5akPB5DgWWZkMMEg7153wENTk7RvN4jddMqD qBEA== X-Received: by 10.152.228.133 with SMTP id si5mr3492318lac.96.1421955408742; Thu, 22 Jan 2015 11:36:48 -0800 (PST) Received: from localhost.localdomain (x1-6-30-46-9a-6d-3c-54.cpe.webspeed.dk. [2.108.161.190]) by mx.google.com with ESMTPSA id nb1sm510068lbb.18.2015.01.22.11.36.47 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 22 Jan 2015 11:36:47 -0800 (PST) From: Ricardo Ribalda Delgado To: Mark Brown , Michal Simek , soren.brinkmann@xilinx.com, linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] spi/xilinx: Support for spi mode LSB_FIRST Date: Thu, 22 Jan 2015 20:36:41 +0100 Message-Id: <1421955402-16379-1-git-send-email-ricardo.ribalda@gmail.com> X-Mailer: git-send-email 2.1.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150122_113712_442887_FEEDC495 X-CRM114-Status: GOOD ( 10.62 ) X-Spam-Score: -0.8 (/) Cc: Ricardo Ribalda Delgado X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Hardware supports LSB_FIRST mode. Support it also in the driver. Signed-off-by: Ricardo Ribalda Delgado --- v2: -add mode_bits drivers/spi/spi-xilinx.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index 79bd84f..d4edeee 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -34,7 +34,8 @@ #define XSPI_CR_MASTER_MODE 0x04 #define XSPI_CR_CPOL 0x08 #define XSPI_CR_CPHA 0x10 -#define XSPI_CR_MODE_MASK (XSPI_CR_CPHA | XSPI_CR_CPOL) +#define XSPI_CR_MODE_MASK (XSPI_CR_CPHA | XSPI_CR_CPOL | \ + XSPI_CR_LSB_FIRST) #define XSPI_CR_TXFIFO_RESET 0x20 #define XSPI_CR_RXFIFO_RESET 0x40 #define XSPI_CR_MANUAL_SSELECT 0x80 @@ -194,6 +195,8 @@ static void xilinx_spi_chipselect(struct spi_device *spi, int is_on) cr |= XSPI_CR_CPHA; if (spi->mode & SPI_CPOL) cr |= XSPI_CR_CPOL; + if (spi->mode & SPI_LSB_FIRST) + cr |= XSPI_CR_LSB_FIRST; xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET); /* We do not check spi->max_speed_hz here as the SPI clock @@ -353,7 +356,7 @@ static int xilinx_spi_probe(struct platform_device *pdev) return -ENODEV; /* the spi->mode bits understood by this driver: */ - master->mode_bits = SPI_CPOL | SPI_CPHA; + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; xspi = spi_master_get_devdata(master); xspi->bitbang.master = master;