From patchwork Fri Mar 30 07:22:39 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Suloev X-Patchwork-Id: 10317207 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 7CDD9602A7 for ; Fri, 30 Mar 2018 07:24:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 652A62A3BA for ; Fri, 30 Mar 2018 07:24:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 59D932A544; Fri, 30 Mar 2018 07:24:20 +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 F2CF12A3BA for ; Fri, 30 Mar 2018 07:24:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752256AbeC3HYI (ORCPT ); Fri, 30 Mar 2018 03:24:08 -0400 Received: from smtp57.i.mail.ru ([217.69.128.37]:43936 "EHLO smtp57.i.mail.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751085AbeC3HW5 (ORCPT ); Fri, 30 Mar 2018 03:22:57 -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=bSHryQu5VKb9W//3uhf5cp0fQV5+Mza8RO11VpMRlk4=; b=ObeVCkMLqNao2h7tyI0Nr+tsp0a6qYEz/YC2Spjdd1lH53x2/vHlrMB3Hc0CRQ+nNKWmUXDWFk9WENPGgkP5W+ghD9F7ToqMppyKx7j2dJAPl8j6zLwAVpq1wALqlfn5wZN4vU3HvQANyTk6QWeDH62sgdMDRoVmOunxVoncceA=; Received: by smtp57.i.mail.ru with esmtpa (envelope-from ) id 1f1oNC-0001IV-Pd; Fri, 30 Mar 2018 10:22:55 +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 2/6] spi: sun6i: handle chip select polarity flag Date: Fri, 30 Mar 2018 10:22:39 +0300 Message-Id: <20180330072243.19368-3-ssuloev@orpaltech.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180330072243.19368-1-ssuloev@orpaltech.com> References: <20180330072243.19368-1-ssuloev@orpaltech.com> Authentication-Results: smtp57.i.mail.ru; auth=pass smtp.auth=ssuloev@orpaltech.com smtp.mailfrom=ssuloev@orpaltech.com X-7FA49CB5: 0D63561A33F958A539CCA3AC6E934867BC0A8B6031D50A009606EB66F9EE38A7725E5C173C3A84C39D7D3120FB43BDE33E9F334EFAB29724B17145F0B7815491C4224003CC836476C0CAF46E325F83A50BF2EBBBDD9D6B0F05F538519369F3743B503F486389A921A5CC5B56E945C8DA X-Mailru-Sender: C5364AD02485212F3ACDC11E67D849176E7C3182A54F3193B3A26EEC0DFD2AE6069BFC61DABEEB110841D3AAAB1726C63DDE9B364B0DF289264D2CD8C2503E8C22A194DADEED8EEDCA01A23BA9CD1BE7ED14614B50AE0675 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 ff790dc..f992a7d 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;