From patchwork Mon Oct 13 14:21:37 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Vladimir Zapolskiy X-Patchwork-Id: 5076841 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 2E5529F30B for ; Mon, 13 Oct 2014 14:26:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 58BC520136 for ; Mon, 13 Oct 2014 14:26:39 +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 45E952012D for ; Mon, 13 Oct 2014 14:26:38 +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 1XdgWM-0005Pd-Qk; Mon, 13 Oct 2014 14:22:46 +0000 Received: from relay1.mentorg.com ([192.94.38.131]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XdgWH-0005M8-Ti for linux-arm-kernel@lists.infradead.org; Mon, 13 Oct 2014 14:22:42 +0000 Received: from nat-ies.mentorg.com ([192.94.31.2] helo=SVR-IES-FEM-01.mgc.mentorg.com) by relay1.mentorg.com with esmtp id 1XdgVv-00050g-HE from Vladimir_Zapolskiy@mentor.com ; Mon, 13 Oct 2014 07:22:19 -0700 Received: from eyas.fin.mentorg.com (137.202.0.76) by SVR-IES-FEM-01.mgc.mentorg.com (137.202.0.104) with Microsoft SMTP Server (TLS) id 14.3.181.6; Mon, 13 Oct 2014 15:22:18 +0100 From: Vladimir Zapolskiy To: Subject: [PATCH 1/3] pwm: process pwm polarity argument in of_pwm_simple_xlate() Date: Mon, 13 Oct 2014 17:21:37 +0300 Message-ID: <1413210099-7862-3-git-send-email-vladimir_zapolskiy@mentor.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1413210099-7862-1-git-send-email-vladimir_zapolskiy@mentor.com> References: <1412956207-24008-1-git-send-email-vladimir_zapolskiy@mentor.com> <1413210099-7862-1-git-send-email-vladimir_zapolskiy@mentor.com> MIME-Version: 1.0 X-Originating-IP: [137.202.0.76] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141013_072242_021740_B8CEAD01 X-CRM114-Status: GOOD ( 10.28 ) X-Spam-Score: -0.0 (/) Cc: Shawn Guo , Sascha Hauer , Thierry Reding , linux-arm-kernel@lists.infradead.org, =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 The third optional argument of pwms is well defined as polarity and it is already used in a number of pwm drivers, so, to minimize changes in the remaining drivers which are to be updated accordingly set polarity in default of_xlate() function. Signed-off-by: Vladimir Zapolskiy Cc: Lothar Waßmann Cc: Sascha Hauer Cc: Thierry Reding Cc: Shawn Guo --- drivers/pwm/core.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 966497d..681d154 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -174,6 +174,13 @@ of_pwm_simple_xlate(struct pwm_chip *pc, const struct of_phandle_args *args) pwm_set_period(pwm, args->args[1]); + if (pc->of_pwm_n_cells > 2) { + if (args->args[2] & PWM_POLARITY_INVERTED) + pwm_set_polarity(pwm, PWM_POLARITY_INVERSED); + else + pwm_set_polarity(pwm, PWM_POLARITY_NORMAL); + } + return pwm; }