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: 5678571 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 58223C058D for ; Wed, 21 Jan 2015 15:55:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7F93D204C9 for ; Wed, 21 Jan 2015 15:55:53 +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 AF8D4204CF for ; Wed, 21 Jan 2015 15:55:52 +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 1YDxbe-0003Pk-PX; Wed, 21 Jan 2015 15:54:10 +0000 Received: from mail-lb0-x22f.google.com ([2a00:1450:4010:c04::22f]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YDxbA-00037Q-K8 for linux-arm-kernel@lists.infradead.org; Wed, 21 Jan 2015 15:53:41 +0000 Received: by mail-lb0-f175.google.com with SMTP id z11so40094312lbi.6 for ; 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 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150121_075340_881063_60F90A7F X-CRM114-Status: UNSURE ( 9.79 ) X-CRM114-Notice: Please train this message. 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 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