From patchwork Thu Jan 14 18:57:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Baruch Siach X-Patchwork-Id: 12020659 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4FDAC433E0 for ; Thu, 14 Jan 2021 18:59:11 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7F91F23B31 for ; Thu, 14 Jan 2021 18:59:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7F91F23B31 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=tkos.co.il Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=/kjGzvXZR1gI9S+pPzt5J6Fc8uebGuJ4tR3beb0yHzo=; b=j5qzvVZ2YujPRgIcK0CynOGJVV 0PA7x4TGj7a32hOlRWxXFRdfJAeM9C/pfHQqoOI1RO4pfQ5owoxQNZhRseo5vsjl29q6wm9RA1coU BVPTn28vBF8i8UQ0mdtRccGD8edSDbkd8Vl0YAGTOHFaSMmUvzbmkajzy/1rntf6XqOu0EBtzaxlJ nRjny/r9w1wHnD5z5TFPGUJ/IBaFnEXygDMBYV5DC17+yFa3l16xbMBoRql/vg9yOVedr6wyW5jeP QzerRxW1G56K89KsE1bKfLZVZ3gWIlOdgI4M6LIXB02055Oh2574TrlsVwp33nko+abKI0xbmpMQ/ g2/f1e8Q==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l07on-0005io-MR; Thu, 14 Jan 2021 18:58:01 +0000 Received: from guitar.tcltek.co.il ([192.115.133.116] helo=mx.tkos.co.il) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l07og-0005fH-7l for linux-arm-kernel@lists.infradead.org; Thu, 14 Jan 2021 18:57:55 +0000 Received: from tarshish.tkos.co.il (unknown [10.0.8.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx.tkos.co.il (Postfix) with ESMTPS id C2045440458; Thu, 14 Jan 2021 20:57:45 +0200 (IST) From: Baruch Siach To: Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Lee Jones , Linus Walleij , Bartosz Golaszewski Subject: [PATCH v3 0/5] gpio: mvebu: pwm fixes and improvements Date: Thu, 14 Jan 2021 20:57:32 +0200 Message-Id: X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210114_135754_485895_90FC668A X-CRM114-Status: GOOD ( 13.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrew Lunn , Baruch Siach , linux-pwm@vger.kernel.org, Gregory Clement , Russell King , linux-gpio@vger.kernel.org, Chris Packham , Thomas Petazzoni , Ralph Sennhauser , Sascha Hauer , linux-arm-kernel@lists.infradead.org, Sebastian Hesselbarth Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This series adds a few related fixes to the pwm .apply and .get_state callbacks. The first patch was originally part of the series adding Armada 8K/7K pwm support. I split it out to a separate series following review comments from Uwe Kleine-König who spotted a few more issues. There is no dependency between this and the Armada 8K/7K series. v3: * Improve patch 3/5 description (Uwe) * Add more Reviewed-by tags from Uwe v2: Address Uwe Kleine-König comments. * Improve patch 1/5 summary line * Add more information to patch 1/5 description * Add more information to patch 2/5 description * Don't round period/duty_cycle up in .apply (patch 3/5) * Expand the comment in path 5/5 based on RMK's analysis of hardware behaviour * Add Uwe's Reviewed-by tags Baruch Siach (5): gpio: mvebu: fix pwm .get_state period calculation gpio: mvebu: improve pwm period calculation accuracy gpio: mvebu: make pwm .get_state closer to idempotent gpio: mvebu: don't limit pwm period/duty_cycle to UINT_MAX gpio: mvebu: document zero pwm duty cycle limitation drivers/gpio/gpio-mvebu.c | 33 +++++++++++++++------------------ 1 file changed, 15 insertions(+), 18 deletions(-)