From patchwork Wed Jan 21 15:53:10 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: 5678541 Return-Path: X-Original-To: patchwork-linux-spi@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 1BA40C058D for ; Wed, 21 Jan 2015 15:53:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 55762204B5 for ; Wed, 21 Jan 2015 15:53:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8D99D204AB for ; Wed, 21 Jan 2015 15:53:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752610AbbAUPx2 (ORCPT ); Wed, 21 Jan 2015 10:53:28 -0500 Received: from mail-lb0-f178.google.com ([209.85.217.178]:48987 "EHLO mail-lb0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754065AbbAUPxT (ORCPT ); Wed, 21 Jan 2015 10:53:19 -0500 Received: by mail-lb0-f178.google.com with SMTP id u10so9409904lbd.9; Wed, 21 Jan 2015 07:53:18 -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:in-reply-to:references; bh=u40GWp1b2eLpxtD5an/lf6nmVcarcpDNAS0xg5QvASo=; b=vqS7IgYXPWkJmwxaokPWBkbsGmCvmAZJ9++0LR8g9SoO0SdxdrCCSy26sNM4Skq6Tn +pdU14rNTOozX2KEsWr0tALU7oHKpRQtst6aE7jg1vSemiHcbXw7iuuIk6VATB7AtWIy fl5Pnr61+axxu1hIaMewT3DlWl267LJou5ThphEdDtayDGMN+jrDfxXTVOdeTnPomnL+ jxg6tuNB5HNRR8TdX+KMHLRUBVvU3ytr/EXxwWB1O+L2yQ0GjbUkrxRbUwb4QolzRpXN 1Zrz8FBSsZMcf14VZl1PmrPKR7xaXP5N1YpQs321oY0E+hV9YBkHaiX1tVluZ+AHOtct Hq6Q== X-Received: by 10.152.43.103 with SMTP id v7mr45153444lal.29.1421855598038; Wed, 21 Jan 2015 07:53:18 -0800 (PST) Received: from neopili.qtec.com (cpe.xe-3-0-1-778.vbrnqe10.dk.customer.tdc.net. [80.197.57.18]) by mx.google.com with ESMTPSA id sj2sm3035146lac.0.2015.01.21.07.53.16 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 21 Jan 2015 07:53:16 -0800 (PST) From: Ricardo Ribalda Delgado To: Mark Brown , Michal Simek , =?UTF-8?q?S=C3=B6ren=20Brinkmann?= , linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Ricardo Ribalda Delgado Subject: [PATCH 3/3] spi/xilinx: Support for spi mode LOOP Date: Wed, 21 Jan 2015 16:53:10 +0100 Message-Id: <1421855590-9210-4-git-send-email-ricardo.ribalda@gmail.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1421855590-9210-1-git-send-email-ricardo.ribalda@gmail.com> References: <1421855590-9210-1-git-send-email-ricardo.ribalda@gmail.com> 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 LOOP mode. Support it also in the driver. Signed-off-by: Ricardo Ribalda Delgado --- drivers/spi/spi-xilinx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index b8ce58d..f6ceb60 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -35,7 +35,7 @@ #define XSPI_CR_CPOL 0x08 #define XSPI_CR_CPHA 0x10 #define XSPI_CR_MODE_MASK (XSPI_CR_CPHA | XSPI_CR_CPOL | \ - XSPI_CR_LSB_FIRST) + XSPI_CR_LSB_FIRST | XSPI_CR_LOOP) #define XSPI_CR_TXFIFO_RESET 0x20 #define XSPI_CR_RXFIFO_RESET 0x40 #define XSPI_CR_MANUAL_SSELECT 0x80 @@ -197,6 +197,8 @@ static void xilinx_spi_chipselect(struct spi_device *spi, int is_on) cr |= XSPI_CR_CPOL; if (spi->mode & SPI_LSB_FIRST) cr |= XSPI_CR_LSB_FIRST; + if (spi->mode & SPI_LOOP) + cr |= XSPI_CR_LOOP; xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET); /* We do not check spi->max_speed_hz here as the SPI clock