From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4626E33CEAF; Tue, 26 Aug 2025 11:19:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756207196; cv=none; b=kb6hE8eZUiOOVRu/KRsgRLpGx2aXZMqrajBGC29uNQLCfjcm7Yl8L+AEtsNl2oOUgM/we3kaYNPvPqySbq6vV1lAuawWl//LkjakB8mPEPfbbvh7wCJ64i1wWJXTaT51RW5jE+6Av3S70SNWeZT2xMmRCEwDEs+3RIASCgI+EzE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756207196; c=relaxed/simple; bh=UEOs5wEjim2wjnnlpC00NBB7CGtIpZTR7jsLtmSfrAM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IvdWUX1LR6wo4NT3zKSC/o6HcRFfF7wQyr+Gr6B7Gx2eKe4U0U/+RrjpX0eXsO6oJybalBXMpWXpUuYrNgCVB7v8AlCMdM/83GVk9IIDLPp8BkRKsIvKgNdoXssxg44t67Aae/J/WUwsTFtIjtNlm6ySq8lgjEQKpghEcTguWMc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=my4vfakA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="my4vfakA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7FA73C4CEF1; Tue, 26 Aug 2025 11:19:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756207195; bh=UEOs5wEjim2wjnnlpC00NBB7CGtIpZTR7jsLtmSfrAM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=my4vfakA6m1mm6uUGFNYm99kmXXhRvEE4yzxNYcGhryzXyieB0cxKmXjrx/7wwC4h Fj+hNDW38b+d7k9vAbZpElRp/CKHOhbwMXG5p76FvJrK8hwNwnFVMopWYDBrGerefQ zQS3ARB2fI8JixbCURV9xn7Ct6jR3Bj1Adn+1UWU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , AngeloGioacchino Del Regno , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Subject: [PATCH 6.16 088/457] pwm: mediatek: Handle hardware enable and clock enable separately Date: Tue, 26 Aug 2025 13:06:12 +0200 Message-ID: <20250826110939.556274485@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110937.289866482@linuxfoundation.org> References: <20250826110937.289866482@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Uwe Kleine-König commit 704d918341c378c5f9505dfdf32d315e256d3846 upstream. Stop handling the clocks in pwm_mediatek_enable() and pwm_mediatek_disable(). This is a preparing change for the next commit that requires that clocks and the enable bit are handled separately. Also move these two functions a bit further up in the source file to make them usable in pwm_mediatek_config(), which is needed in the next commit, too. Signed-off-by: Uwe Kleine-König Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/55c94fe2917ece152ee1e998f4675642a7716f13.1753717973.git.u.kleine-koenig@baylibre.com Cc: stable@vger.kernel.org Signed-off-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman --- drivers/pwm/pwm-mediatek.c | 60 +++++++++++++++++++++------------------------ 1 file changed, 28 insertions(+), 32 deletions(-) --- a/drivers/pwm/pwm-mediatek.c +++ b/drivers/pwm/pwm-mediatek.c @@ -115,6 +115,26 @@ static inline void pwm_mediatek_writel(s writel(value, chip->regs + chip->soc->reg_offset[num] + offset); } +static void pwm_mediatek_enable(struct pwm_chip *chip, struct pwm_device *pwm) +{ + struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); + u32 value; + + value = readl(pc->regs); + value |= BIT(pwm->hwpwm); + writel(value, pc->regs); +} + +static void pwm_mediatek_disable(struct pwm_chip *chip, struct pwm_device *pwm) +{ + struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); + u32 value; + + value = readl(pc->regs); + value &= ~BIT(pwm->hwpwm); + writel(value, pc->regs); +} + static int pwm_mediatek_config(struct pwm_chip *chip, struct pwm_device *pwm, int duty_ns, int period_ns) { @@ -177,35 +197,6 @@ out: return ret; } -static int pwm_mediatek_enable(struct pwm_chip *chip, struct pwm_device *pwm) -{ - struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); - u32 value; - int ret; - - ret = pwm_mediatek_clk_enable(chip, pwm); - if (ret < 0) - return ret; - - value = readl(pc->regs); - value |= BIT(pwm->hwpwm); - writel(value, pc->regs); - - return 0; -} - -static void pwm_mediatek_disable(struct pwm_chip *chip, struct pwm_device *pwm) -{ - struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); - u32 value; - - value = readl(pc->regs); - value &= ~BIT(pwm->hwpwm); - writel(value, pc->regs); - - pwm_mediatek_clk_disable(chip, pwm); -} - static int pwm_mediatek_apply(struct pwm_chip *chip, struct pwm_device *pwm, const struct pwm_state *state) { @@ -215,8 +206,10 @@ static int pwm_mediatek_apply(struct pwm return -EINVAL; if (!state->enabled) { - if (pwm->state.enabled) + if (pwm->state.enabled) { pwm_mediatek_disable(chip, pwm); + pwm_mediatek_clk_disable(chip, pwm); + } return 0; } @@ -225,8 +218,11 @@ static int pwm_mediatek_apply(struct pwm if (err) return err; - if (!pwm->state.enabled) - err = pwm_mediatek_enable(chip, pwm); + if (!pwm->state.enabled) { + err = pwm_mediatek_clk_enable(chip, pwm); + if (!err) + pwm_mediatek_enable(chip, pwm); + } return err; }