From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.8 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 B08ACC07542 for ; Sat, 25 May 2019 18:55:40 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 7364520815 for ; Sat, 25 May 2019 18:55:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="lfgA51Ui"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="BiOXZrxu"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=googlemail.com header.i=@googlemail.com header.b="HOmH0HDk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7364520815 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=googlemail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: 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: List-Owner; bh=mQs815NZ+dD3Apac8zArvPgJV/Subo8rwlV8k7PQFKY=; b=lfgA51UiumsQET 235T+8/WPGdY9uic14p0OtCnY4pOot45YOq1jasVVyI762QW9U0lFrqfL6qG/vNahBitpOHQkPFNH 0GWTvZximrinDTE08xA7FhoJ+Xj6u5M7hQSEdPgq6VIihMYZToykMYxFDhBFyXhonU52+jKx+ABlV SBSw0sjRvqK1wupNmGWonJWCinOnHcNzFXAJDgZvKAnvbJewryRwJmksNm6FMRB/JYjIuRpdsoC2h D/djepPvP/yO3IcyexWUQM/cJGRs88KSG+HaugpWEvl997bnAw24D40RRIWCJ9kkY/MVMre9Wn2pb dwFEOfynGC5T9Uqy86PA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hUbQH-0004LQ-Og; Sat, 25 May 2019 18:29:37 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hUbQ8-0003xz-6H; Sat, 25 May 2019 18:29:28 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=n+PNcF82aHvSsVWjJ6xxGU5P+zv9rDQAJYSA2FkuCyI=; b=BiOXZrxutnRNq3BIucJLphmMI/ pZaiyAS5FyzO5tWZx9iN9YFqK1spn4b0I/TxhYYqmOf5kt5Ocyx2KHHmR68hN8zsl9HE7C9ey4XrM 4HGG1sa/vNnSTgGara7VPdsWq8STF6WhZDgCYuws0dHPrPYpiD6cHmrmsl2dEOYWKhjW7m38oV9KN UPx/qKYuQja/0QsZRi6FAXFknRMdsj9mHF2dfz1pgKJRZbYWCU7OlDHjlz6tvt4L6GNM+Hk4xCU5L EJWt0eqJ+P2u42mTeTpA+aMcENVVKs6sINdTbFahx+krHi0NhLbfU7mYXLwhIz+ygBlpeC4wfw1gf zgoGgE9w==; Received: from mail-wm1-x341.google.com ([2a00:1450:4864:20::341]) by casper.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hUb93-00025W-He; Sat, 25 May 2019 18:11:51 +0000 Received: by mail-wm1-x341.google.com with SMTP id e19so4164338wme.1; Sat, 25 May 2019 11:11:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=n+PNcF82aHvSsVWjJ6xxGU5P+zv9rDQAJYSA2FkuCyI=; b=HOmH0HDkOr7SXnhIcKjEbMv5hPMaXwl9juWT/B/W2aqGGjOVQIs7AHYGMWCPwm/t4e Y9sFFjPKvWUkZvJs9lBPO5VekrHnjKFfFYeVP/x87C9QTOtgKpc3iSgm0lbbQVFazFWh YTvBXhbKt3wpBTV6JUp+0QMqVAOTiQeHQh1DUiSASdV5iLuuDjO5x3IoBXRBowoZ1gm0 Ab+rr6jnRMxNrVPd5gfDG9V9RrQTDjfUiUO8spS2+HSu+89X0Kr4sQGBnC8VsoZ5UI+2 wNxBUUSFXZCqPQfH61jVjEN7AKzhyzw1XmvSIfkW2lnTwukcYpWUgZFex6esZi28j4Xy XERA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=n+PNcF82aHvSsVWjJ6xxGU5P+zv9rDQAJYSA2FkuCyI=; b=PMpYvQCaleoocLOhngdekmGyk32vFHI7Y8PMFLlxHeNFVoXTiu2CVGrsQUWYN1sCXy DH6nkTRkl2n2zlQvGbs+/zd0tLJxUqnhKIe6ccE8ktyzv4rw5ETcpxwlUEPYB8/g5m2M HwLKclfivpZMUrvKkiKhdfxslPQjmgZldlWGgGasC7pEgjIdR3jsi1tREWbrohC/myls y1xVgHQr8ZNxZ4e1oAf9CmIRc0mu4E+ovpOY/kA7zTbqLE9GM6w3oAW/qmga3jlkvW0o 64tFFu8rgZwEiep4UJGM8FSZ+F1ioW5JjXvTZI4L8vN6b/xjXCcSPD9HOfDq5tYgnahl 6YJQ== X-Gm-Message-State: APjAAAXDJTx2GcScOGJbUb/l6+N5tNJrQhKftvH7M1gE9Py5hlFRGTes BsvQhDxLcLPmJYb+McHb8m4lbr19 X-Google-Smtp-Source: APXvYqxoBz1yNBbK0nsIKKxkJ6BPRwZafE9Jtj2RJXjDTEjHPteUwQIKRJc58Tq/sxZidVq4F1k8eA== X-Received: by 2002:a1c:cfc9:: with SMTP id f192mr7147926wmg.19.1558807907359; Sat, 25 May 2019 11:11:47 -0700 (PDT) Received: from blackbox.darklights.net (p200300F133DDA4007CB8841254CD64FD.dip0.t-ipconnect.de. [2003:f1:33dd:a400:7cb8:8412:54cd:64fd]) by smtp.googlemail.com with ESMTPSA id o8sm12794540wra.4.2019.05.25.11.11.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 25 May 2019 11:11:46 -0700 (PDT) From: Martin Blumenstingl To: linux-amlogic@lists.infradead.org, linux-pwm@vger.kernel.org, thierry.reding@gmail.com, u.kleine-koenig@pengutronix.de Subject: [PATCH 03/14] pwm: meson: use GENMASK and FIELD_PREP for the lo and hi values Date: Sat, 25 May 2019 20:11:22 +0200 Message-Id: <20190525181133.4875-4-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190525181133.4875-1-martin.blumenstingl@googlemail.com> References: <20190525181133.4875-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190525_191149_667103_50ED4351 X-CRM114-Status: GOOD ( 14.22 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Martin Blumenstingl , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org meson_pwm_calc() ensures that "lo" is always less than 16 bits wide (otherwise it would overflow into the "hi" part of the REG_PWM_{A,B} register). Use GENMASK and FIELD_PREP for the lo and hi values to make it easier to spot how wide these are internally. Additionally this is a preparation step for the .get_state() implementation where the GENMASK() for lo and hi becomes handy because it can be used with FIELD_GET() to extract the values from the register REG_PWM_{A,B} register. No functional changes intended. Signed-off-by: Martin Blumenstingl --- drivers/pwm/pwm-meson.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c index 35b38c7201c3..c62a3ac924d0 100644 --- a/drivers/pwm/pwm-meson.c +++ b/drivers/pwm/pwm-meson.c @@ -5,6 +5,8 @@ * Copyright (C) 2014 Amlogic, Inc. */ +#include +#include #include #include #include @@ -20,7 +22,8 @@ #define REG_PWM_A 0x0 #define REG_PWM_B 0x4 -#define PWM_HIGH_SHIFT 16 +#define PWM_LOW_MASK GENMASK(15, 0) +#define PWM_HIGH_MASK GENMASK(31, 16) #define REG_MISC_AB 0x8 #define MISC_B_CLK_EN BIT(23) @@ -217,7 +220,8 @@ static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm) value |= clk_enable; writel(value, meson->base + REG_MISC_AB); - value = (channel->hi << PWM_HIGH_SHIFT) | channel->lo; + value = FIELD_PREP(PWM_HIGH_MASK, channel->hi) | + FIELD_PREP(PWM_LOW_MASK, channel->lo); writel(value, meson->base + offset); value = readl(meson->base + REG_MISC_AB); -- 2.21.0 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic