From patchwork Fri Mar 30 12:50:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Suloev X-Patchwork-Id: 10317687 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9760F6055B for ; Fri, 30 Mar 2018 12:52:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8817728B8B for ; Fri, 30 Mar 2018 12:52:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7CF122A321; Fri, 30 Mar 2018 12:52:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1BAF028B8B for ; Fri, 30 Mar 2018 12:52:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752129AbeC3MvB (ORCPT ); Fri, 30 Mar 2018 08:51:01 -0400 Received: from smtp58.i.mail.ru ([217.69.128.38]:36982 "EHLO smtp58.i.mail.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751384AbeC3Mu6 (ORCPT ); Fri, 30 Mar 2018 08:50:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=orpaltech.com; s=mailru; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=QPMj0p/F7sIbvrYR4HlfQimE9qc5LRtmnEGWnYNZH/s=; b=mvfM7vWtCWlTyNcLYHEV8Z8SnYiT/hHVXXMg/fgqg9RSTaXRs5baFX+aMvKGYxFyjRgGPug9UUUZCkpml6F4DZYPnKpge9Vek0cbCbFaEg5uyVFnYKggN76ssnBheC9ccYlA/YuDUlU6MFpRHZya5rYJtrwJGTBZb30iK19JjoM=; Received: by smtp58.i.mail.ru with esmtpa (envelope-from ) id 1f1tUe-0001cV-37; Fri, 30 Mar 2018 15:50:56 +0300 From: Sergey Suloev To: Mark Brown , Maxime Ripard , Chen-Yu Tsai Cc: linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Sergey Suloev Subject: [PATCH v2 2/6] spi: sun6i: handle chip select polarity flag Date: Fri, 30 Mar 2018 15:50:43 +0300 Message-Id: <20180330125047.13936-3-ssuloev@orpaltech.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180330125047.13936-1-ssuloev@orpaltech.com> References: <20180330125047.13936-1-ssuloev@orpaltech.com> Authentication-Results: smtp58.i.mail.ru; auth=pass smtp.auth=ssuloev@orpaltech.com smtp.mailfrom=ssuloev@orpaltech.com X-7FA49CB5: 0D63561A33F958A5FA02BF12BAC891C926FD46E76099F7CD5705F49E3A860CED725E5C173C3A84C30584FF81F342DA0743748A6DB685256DBAAD9279A72BC9ABC4224003CC836476C0CAF46E325F83A50BF2EBBBDD9D6B0F5D41B9178041F3E72623479134186CDE6BA297DBC24807EABDAD6C7F3747799A X-Mailru-Sender: C5364AD02485212F3ACDC11E67D8491781A4B80ABAA47B337E57963255478D82069BFC61DABEEB110841D3AAAB1726C63DDE9B364B0DF289264D2CD8C2503E8C22A194DADEED8EEDCA01A23BA9CD1BE7ED14614B50AE0675 X-Mras: OK Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The chip select polarity flag is declared as supported but is not handled in the code. Signed-off-by: Sergey Suloev --- drivers/spi/spi-sun6i.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c index 88ad45e..78acc1f 100644 --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -193,6 +193,12 @@ static void sun6i_spi_set_cs(struct spi_device *spi, bool enable) else reg &= ~SUN6I_TFR_CTL_CS_LEVEL; + /* Handle chip select "reverse" polarity */ + if (spi->mode & SPI_CS_HIGH) + reg &= ~SUN6I_TFR_CTL_SPOL; + else + reg |= SUN6I_TFR_CTL_SPOL; + /* We want to control the chip select manually */ reg |= SUN6I_TFR_CTL_CS_MANUAL;