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: 5687701 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id BD5699F333 for ; Thu, 22 Jan 2015 19:37:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F33C8201C0 for ; Thu, 22 Jan 2015 19:37:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2DBC7201BB for ; Thu, 22 Jan 2015 19:37:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754432AbbAVTgv (ORCPT ); Thu, 22 Jan 2015 14:36:51 -0500 Received: from mail-la0-f48.google.com ([209.85.215.48]:37909 "EHLO mail-la0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753398AbbAVTgu (ORCPT ); Thu, 22 Jan 2015 14:36:50 -0500 Received: by mail-la0-f48.google.com with SMTP id pv20so3564696lab.7; 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 Cc: Ricardo Ribalda Delgado 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 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, 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;