From patchwork Thu Feb 7 13:12:06 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Larsson X-Patchwork-Id: 2110851 Return-Path: X-Original-To: patchwork-spi-devel-general@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by patchwork1.kernel.org (Postfix) with ESMTP id ED1A33FCD5 for ; Thu, 7 Feb 2013 13:12:43 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=sfs-ml-2.v29.ch3.sourceforge.com) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1U3RHO-0007hc-Uy; Thu, 07 Feb 2013 13:12:42 +0000 Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1U3RHM-0007hN-BI for spi-devel-general@lists.sourceforge.net; Thu, 07 Feb 2013 13:12:40 +0000 X-ACL-Warn: Received: from vsp-authed02.binero.net ([195.74.38.226] helo=vsp-authed-03-02.binero.net) by sog-mx-4.v43.ch3.sourceforge.com with smtp (Exim 4.76) id 1U3RHK-0006Wk-W7 for spi-devel-general@lists.sourceforge.net; Thu, 07 Feb 2013 13:12:40 +0000 Received: from smtp01.binero.se (unknown [195.74.38.28]) by vsp-authed-03-02.binero.net (Halon Mail Gateway) with ESMTP; Thu, 7 Feb 2013 14:12:25 +0100 (CET) Received: from localhost.localdomain (static-92-33-28-242.sme.bredbandsbolaget.se [92.33.28.242]) (Authenticated sender: andreas@gaisler.com) by smtp-05-01.atm.binero.net (Postfix) with ESMTPA id AA4F530076; Thu, 7 Feb 2013 14:12:24 +0100 (CET) From: Andreas Larsson To: Grant Likely Subject: [PATCH v2 2/7] spi: spi-fsl-spi: Make sure in spi_fsl_setup that chipselect becomes inactive Date: Thu, 7 Feb 2013 14:12:06 +0100 Message-Id: <1360242731-13700-3-git-send-email-andreas@gaisler.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1360242731-13700-1-git-send-email-andreas@gaisler.com> References: <1360242731-13700-1-git-send-email-andreas@gaisler.com> X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [195.74.38.226 listed in list.dnswl.org] X-Headers-End: 1U3RHK-0006Wk-W7 Cc: Joakim Tjernlund , software@gaisler.com, Mark Brown , linux-kernel@vger.kernel.org, Anton Vorontsov , Peter Korsgaard , spi-devel-general@lists.sourceforge.net, Mingkai Hu X-BeenThere: spi-devel-general@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: Linux SPI core/device drivers discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: spi-devel-general-bounces@lists.sourceforge.net This is needed for a device in SPI_CS_HIGH mode that otherwise could start out active for the first transaction. Signed-off-by: Andreas Larsson --- drivers/spi/spi-fsl-spi.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c index e9ae1d8..b63ce63 100644 --- a/drivers/spi/spi-fsl-spi.c +++ b/drivers/spi/spi-fsl-spi.c @@ -387,6 +387,10 @@ static int fsl_spi_setup(struct spi_device *spi) cs->hw_mode = hw_mode; /* Restore settings */ return retval; } + + /* Initialize chipselect - might be active for SPI_CS_HIGH mode */ + fsl_spi_chipselect(spi, BITBANG_CS_INACTIVE); + return 0; }