From patchwork Sun Nov 7 20:29:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Protsenko X-Patchwork-Id: 517852 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B23EEC4332F for ; Sun, 7 Nov 2021 20:30:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9DBF061159 for ; Sun, 7 Nov 2021 20:30:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236514AbhKGUcv (ORCPT ); Sun, 7 Nov 2021 15:32:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236519AbhKGUcl (ORCPT ); Sun, 7 Nov 2021 15:32:41 -0500 Received: from mail-lf1-x134.google.com (mail-lf1-x134.google.com [IPv6:2a00:1450:4864:20::134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CEE23C061766 for ; Sun, 7 Nov 2021 12:29:57 -0800 (PST) Received: by mail-lf1-x134.google.com with SMTP id y26so31537404lfa.11 for ; Sun, 07 Nov 2021 12:29:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9WvSdbDOGkJMWFwlueKJ7OSnxuu3S90DVplyKp+a4Js=; b=OB6JCw3XmoDqOjnlMDJkbVgti6ueJnByCDUtaZnVZv92Goc+QJLtn/vr6QCdjb17mZ z7+/6ghtTVY5NEKgKqp5rGORTCjMVLuUMCNkb8NKu8Ra1Cd3QrlFsUkuWiVb08MqEIvZ 11sE5Xro5Yyq+Zw0jktwSFnCgMJmxLHeFd7w9GcIJSmvX/Abuo8nminRK74nkRSkbKQy fqJXqIuV3xMqPvPJgj0IvkMtCnpNWyRm5L0PaTy0Hzl/EeMnex6o2P+3cIlCVjuc0Zaq 8cIWT5pJScvwa4zH6PJqaM3wRpCcSW84EqjoCb5t3unfykCorAepYxFlGMEequ8sCfoX 6xTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=9WvSdbDOGkJMWFwlueKJ7OSnxuu3S90DVplyKp+a4Js=; b=AgUTYQlhyLx5dyHpiQbQ7HKPAFrz21Ys0HtkuZNRXv4Yo4pMxnAd3YUPqYNwRzuWjj Fdottbp9q5beul5vZtjR27h5xAHXxE8CRgjmpRQQ/0arX+xZh7Qs0FEFbVJGLGLIP/co MiOwa70uYv6tL8Y7g2P5im8EkFUQbUVGz53S9wuhDyns5vbZXtBp72fq1bCNkuw1XFYl oHxg243khTx6tO6YAtHte7ocKcCvRcOv9kMOLO4Z8ohGwDsPI9dEZuUHfQS6hewyUiT6 1tQZHz62Aw9lIeH5SVsumATjKhVgq1eKVnqhOu1ytqKWcxkWDWbliczFpnaCQE2QQ5t1 VmJA== X-Gm-Message-State: AOAM531mWQYt9n8R6M5zdb0IH83Us8TrkXtE/fmVGmv1ts9c41JWxWIp KjX3IvWXwu0vj6W7IJNvvU+h4w== X-Google-Smtp-Source: ABdhPJyMqo5JVtbOKHlcu+SXEbG0CiLH2F8CqaGM+3Zy8I90GVOq0Cfjc9m9GFiRm47l894XIR6Xgw== X-Received: by 2002:a05:6512:104e:: with SMTP id c14mr7626046lfb.30.1636316996150; Sun, 07 Nov 2021 12:29:56 -0800 (PST) Received: from localhost ([31.134.121.151]) by smtp.gmail.com with ESMTPSA id b12sm1575370lfb.212.2021.11.07.12.29.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Nov 2021 12:29:55 -0800 (PST) From: Sam Protsenko To: Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski Cc: linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH v3 06/12] watchdog: s3c2410: Extract disable and mask code into separate functions Date: Sun, 7 Nov 2021 22:29:37 +0200 Message-Id: <20211107202943.8859-7-semen.protsenko@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211107202943.8859-1-semen.protsenko@linaro.org> References: <20211107202943.8859-1-semen.protsenko@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org The s3c2410wdt_mask_and_disable_reset() function content is bound to be changed further. Prepare it for upcoming changes by splitting into separate "mask reset" and "disable reset" functions. But keep s3c2410wdt_mask_and_disable_reset() function present as a facade. This commit doesn't bring any functional change to existing devices, but merely provides an infrastructure for upcoming chips support. Signed-off-by: Sam Protsenko Reviewed-by: Krzysztof Kozlowski Reviewed-by: Guenter Roeck --- Changes in v3: - Added R-b tag by Krzysztof Kozlowski Changes in v2: - (none): it's a new patch drivers/watchdog/s3c2410_wdt.c | 54 ++++++++++++++++++++++------------ 1 file changed, 35 insertions(+), 19 deletions(-) diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index 2cc4923a98a5..4ac0a30e835e 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -202,37 +202,53 @@ static inline struct s3c2410_wdt *freq_to_wdt(struct notifier_block *nb) return container_of(nb, struct s3c2410_wdt, freq_transition); } -static int s3c2410wdt_mask_and_disable_reset(struct s3c2410_wdt *wdt, bool mask) +static int s3c2410wdt_disable_wdt_reset(struct s3c2410_wdt *wdt, bool mask) { + const u32 mask_val = BIT(wdt->drv_data->mask_bit); + const u32 val = mask ? mask_val : 0; int ret; - u32 mask_val = 1 << wdt->drv_data->mask_bit; - u32 val = 0; - /* No need to do anything if no PMU CONFIG needed */ - if (!(wdt->drv_data->quirks & QUIRK_HAS_PMU_CONFIG)) - return 0; + ret = regmap_update_bits(wdt->pmureg, wdt->drv_data->disable_reg, + mask_val, val); + if (ret < 0) + dev_err(wdt->dev, "failed to update reg(%d)\n", ret); - if (mask) - val = mask_val; + return ret; +} - if (wdt->drv_data->quirks & QUIRK_HAS_PMU_AUTO_DISABLE) { - ret = regmap_update_bits(wdt->pmureg, - wdt->drv_data->disable_reg, mask_val, - val); - if (ret < 0) - goto error; - } +static int s3c2410wdt_mask_wdt_reset(struct s3c2410_wdt *wdt, bool mask) +{ + const u32 mask_val = BIT(wdt->drv_data->mask_bit); + const u32 val = mask ? mask_val : 0; + int ret; - ret = regmap_update_bits(wdt->pmureg, - wdt->drv_data->mask_reset_reg, - mask_val, val); - error: + ret = regmap_update_bits(wdt->pmureg, wdt->drv_data->mask_reset_reg, + mask_val, val); if (ret < 0) dev_err(wdt->dev, "failed to update reg(%d)\n", ret); return ret; } +static int s3c2410wdt_mask_and_disable_reset(struct s3c2410_wdt *wdt, bool mask) +{ + int ret; + + if (wdt->drv_data->quirks & QUIRK_HAS_PMU_AUTO_DISABLE) { + ret = s3c2410wdt_disable_wdt_reset(wdt, mask); + if (ret < 0) + return ret; + } + + if (wdt->drv_data->quirks & QUIRK_HAS_PMU_CONFIG) { + ret = s3c2410wdt_mask_wdt_reset(wdt, mask); + if (ret < 0) + return ret; + } + + return 0; +} + static int s3c2410wdt_keepalive(struct watchdog_device *wdd) { struct s3c2410_wdt *wdt = watchdog_get_drvdata(wdd);