From patchwork Wed Oct 16 15:25:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: George Stark X-Patchwork-Id: 13838595 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 02043D2A52B for ; Wed, 16 Oct 2024 15:32:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC: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=T3Q1msRaeqxF6VzybefXJBK+HzKQABZ1uZVeBIxYoFo=; b=BF7m4GfIWN14OToj+T082Xjtlw /EKGATIYYjZcBxkzfDau55UA7WBx4wnQtPQqtW1hW30+6JcXYRXFLaK+ZgvWANcjlIT9m8W27nG4z UUQ+cz/1pJiXO9UplH7CQFTryuDSqxigul7Zd2DcBoKosYlAbiDyOBZZ/JrRnMArQZsu0tKz4jpU+ gTRk+4QdfO4W8mATOuFCeYvN5gw6oDC/KvhM1xoGCa/4QP68yQhTRcmE0nXDIOaedUWEPyzyd5i1C 6MSYU2BKj2aFEw0h4vk7igzTPd+HNahASRuqP8/BYOYOGJwOIdYQQ0JXbIiaJTjgz2MG2IsEnvw/V kBzg9hFQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t160J-0000000CFiw-2Zej; Wed, 16 Oct 2024 15:32:03 +0000 Received: from mx2.sberdevices.ru ([45.89.224.132] helo=mx1.sberdevices.ru) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t15ub-0000000CEat-12gB; Wed, 16 Oct 2024 15:26:13 +0000 Received: from p-infra-ksmg-sc-msk02.sberdevices.ru (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id C10FD12001D; Wed, 16 Oct 2024 18:26:00 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru C10FD12001D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1729092360; bh=T3Q1msRaeqxF6VzybefXJBK+HzKQABZ1uZVeBIxYoFo=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=lAJ8Llu23qIYlVS/UmkWoFAYtBOyPX3negL50vqIGE3ubb/+uiM+WYKeZiF+GWe61 UabP+Dd1WH5CBPUi9PeJneUNhGmukkPtwCJmbQZykAT1x8OfOSEsxV2o1eK3fsuhsy cTb5FustcsfJyaWxgzhFA5nAdsTgqXFX0E1nBmHcQ6E/Z56MKbac2/3/B/9zy9lvOz w2RLO+fAidAuxQPMmAI5f9OlpLtPZbjaI4nV01/eFWquhAfyYklW/Umqh3tRUFjC45 wLcycyua/k7TAopaNM7NUi0ZJ+WnpcBCM1arfJB1XHwaREb0WD2AEv8HSrUxp68OM3 +HOayN/AukuQw== Received: from smtp.sberdevices.ru (unknown [172.16.192.103]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.sberdevices.ru (Postfix) with ESMTPS; Wed, 16 Oct 2024 18:26:00 +0300 (MSK) From: George Stark To: , , , , CC: , , , , , George Stark Subject: [PATCH v2 0/4] pwm: meson: Support constant and polarity bits Date: Wed, 16 Oct 2024 18:25:49 +0300 Message-ID: <20241016152553.2321992-1-gnstark@salutedevices.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [185.8.126.20] X-ClientProxiedBy: p-i-exch-a-m2.sberdevices.ru (172.24.196.120) To p-i-exch-a-m1.sberdevices.ru (172.24.196.116) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 188483 [Oct 16 2024] X-KSMG-AntiSpam-Version: 6.1.0.4 X-KSMG-AntiSpam-Envelope-From: gnstark@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 39 0.3.39 e168d0b3ce73b485ab2648dd465313add1404cce, {Tracking_uf_ne_domains}, {Tracking_from_domain_doesnt_match_to}, smtp.sberdevices.ru:7.1.1,5.0.1;lore.kernel.org:7.1.1;salutedevices.com:7.1.1;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;127.0.0.199:7.1.2, FromAlignment: s X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean, bases: 2024/10/16 12:29:00 X-KSMG-LinksScanning: Clean, bases: 2024/10/16 12:30:00 X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2024/10/16 12:08:00 #26762169 X-KSMG-AntiVirus-Status: Clean, skipped X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241016_082610_079707_FADB4567 X-CRM114-Status: GOOD ( 11.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch series add support for amlogic's newer PWM IPs hardware features: constant and polarity bits. Using polarity bit for inverting output signal allows to identify inversion in .get_state() callback which can only rely on data read from registers. Using constant bit allows to have steady output level when duty cycle is zero or equal to period. Without this bit there will always be single-clock spikes on output. Those bits are supported in axg, g12 and newer SoC families like s4, a1 etc. Tested on g12, a1. Changes in v2: pwm: meson: Support constant and polarity bits - drop separate set_constant() and set_polarity() and move register writings into enable() and disable() pwm: meson: Simplify get_state() callback - add new patch to make .get_state() callback consistent. Since I add new fields to struct meson_pwm_channel either we should fill back all of them from registers or not at all. pwm: meson: Use separate device id data for axg and g12 - add splitting amlogic,meson8-pwm-v2 into amlogic,meson-axg-pwm-v2 and amlogic,meson-g12-pwm-v2 with pwm_meson_axg_v2_data for both compatibles. - update commit message - add tag: Reviewed-by: Neil Armstrong pwm: meson: Enable constant and polarity features for g12, axg, s4 - add enabling const and polarity to pwm_meson_axg_v2_data - add tag: Reviewed-by: Neil Armstrong link to v1: [1] [1] https://lore.kernel.org/linux-arm-kernel/20241007193203.1753326-4-gnstark@salutedevices.com/T/ George Stark (4): pwm: meson: Simplify get_state() callback pwm: meson: Support constant and polarity bits pwm: meson: Use separate device id data for axg and g12 pwm: meson: Enable constant and polarity features for g12, axg, s4 drivers/pwm/pwm-meson.c | 103 +++++++++++++++++++++++++++++++++++----- 1 file changed, 92 insertions(+), 11 deletions(-) --- 2.25.1