From patchwork Wed Jan 13 09:22:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Baruch Siach X-Patchwork-Id: 362419 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 51087C433E9 for ; Wed, 13 Jan 2021 09:24:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 025802339F for ; Wed, 13 Jan 2021 09:24:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726661AbhAMJYI (ORCPT ); Wed, 13 Jan 2021 04:24:08 -0500 Received: from guitar.tcltek.co.il ([192.115.133.116]:45691 "EHLO mx.tkos.co.il" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725796AbhAMJYH (ORCPT ); Wed, 13 Jan 2021 04:24:07 -0500 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 53CA1440458; Wed, 13 Jan 2021 11:23:24 +0200 (IST) From: Baruch Siach To: Thierry Reding , =?utf-8?q?Uwe_Kleine-K?= =?utf-8?b?w7ZuaWc=?= , Lee Jones , Linus Walleij , Bartosz Golaszewski Cc: Baruch Siach , Andrew Lunn , Gregory Clement , Russell King , Sebastian Hesselbarth , Thomas Petazzoni , Chris Packham , Sascha Hauer , Ralph Sennhauser , linux-pwm@vger.kernel.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 0/5] gpio: mvebu: pwm fixes and improvements Date: Wed, 13 Jan 2021 11:22:40 +0200 Message-Id: X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.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. 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(-) Reviewed-by: Linus Walleij