From patchwork Tue May 16 23:00:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shreeya Patel X-Patchwork-Id: 13243964 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 54EF6C77B75 for ; Tue, 16 May 2023 23:03:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229475AbjEPXDV (ORCPT ); Tue, 16 May 2023 19:03:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229595AbjEPXDL (ORCPT ); Tue, 16 May 2023 19:03:11 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB22783C3; Tue, 16 May 2023 16:03:04 -0700 (PDT) Received: from localhost.localdomain (unknown [IPv6:2405:201:0:21ea:73f6:2283:f432:3936]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: shreeya) by madras.collabora.co.uk (Postfix) with ESMTPSA id 1BC756605906; Wed, 17 May 2023 00:02:55 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1684278183; bh=p1G9c4ZZ0z8CwWdi+emrO1to/4AF/8CTX9Ml4RigWEU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YjsZ4IsUmuOvbFm3+kJRtR/DToroDRMOUlV+7bBqh4nlkSmKs3HOWXTYV+aFMi12B K62bCfS6sHud5Ljdj9zwnT9U31oTw0aCeF6StztEaP2QTZdj0Ziu8vUCYazEcs0yih fMJkJSW8tCIOV3zAj6h8IKAy9ZxsYIccrfGdtdu1ji1KikCXg/ki09rAuPQ/4+fyVZ S9dmAp81e2WUSl+fH/wMDFiWgcME6ltH/W2CqWfbfK+GTSuQCooJX/syZ7mCTjzWgU wetWmBND3XWYBFitf+kGIUYWkv3aFngf7UGMBeyOhwyJhWdGs8MOkCFrUISJYHcaPW qX6Vs3LGcAxQg== From: Shreeya Patel To: jic23@kernel.org, lars@metafoo.de, heiko@sntech.de, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, sebastian.reichel@collabora.com Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@collabora.com, gustavo.padovan@collabora.com, serge.broslavsky@collabora.com, Shreeya Patel Subject: [PATCH 2/7] iio: adc: rockchip_saradc: Make use of devm_clk_get_enabled Date: Wed, 17 May 2023 04:30:46 +0530 Message-Id: <20230516230051.14846-3-shreeya.patel@collabora.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230516230051.14846-1-shreeya.patel@collabora.com> References: <20230516230051.14846-1-shreeya.patel@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Use devm_clk_get_enabled() to avoid manually disabling the clock. Signed-off-by: Shreeya Patel --- drivers/iio/adc/rockchip_saradc.c | 77 +++++-------------------------- 1 file changed, 11 insertions(+), 66 deletions(-) diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c index ac6fdf8e673b..05b66eff9a44 100644 --- a/drivers/iio/adc/rockchip_saradc.c +++ b/drivers/iio/adc/rockchip_saradc.c @@ -339,20 +339,6 @@ static void rockchip_saradc_reset_controller(struct reset_control *reset) reset_control_deassert(reset); } -static void rockchip_saradc_clk_disable(void *data) -{ - struct rockchip_saradc *info = data; - - clk_disable_unprepare(info->clk); -} - -static void rockchip_saradc_pclk_disable(void *data) -{ - struct rockchip_saradc *info = data; - - clk_disable_unprepare(info->pclk); -} - static void rockchip_saradc_regulator_disable(void *data) { struct rockchip_saradc *info = data; @@ -486,16 +472,6 @@ static int rockchip_saradc_probe(struct platform_device *pdev) return ret; } - info->pclk = devm_clk_get(&pdev->dev, "apb_pclk"); - if (IS_ERR(info->pclk)) - return dev_err_probe(&pdev->dev, PTR_ERR(info->pclk), - "failed to get pclk\n"); - - info->clk = devm_clk_get(&pdev->dev, "saradc"); - if (IS_ERR(info->clk)) - return dev_err_probe(&pdev->dev, PTR_ERR(info->clk), - "failed to get adc clock\n"); - info->vref = devm_regulator_get(&pdev->dev, "vref"); if (IS_ERR(info->vref)) return dev_err_probe(&pdev->dev, PTR_ERR(info->vref), @@ -504,6 +480,16 @@ static int rockchip_saradc_probe(struct platform_device *pdev) if (info->reset) rockchip_saradc_reset_controller(info->reset); + info->pclk = devm_clk_get_enabled(&pdev->dev, "apb_pclk"); + if (IS_ERR(info->pclk)) + return dev_err_probe(&pdev->dev, PTR_ERR(info->pclk), + "failed to get pclk\n"); + + info->clk = devm_clk_get_enabled(&pdev->dev, "saradc"); + if (IS_ERR(info->clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(info->clk), + "failed to get adc clock\n"); + /* * Use a default value for the converter clock. * This may become user-configurable in the future. @@ -533,32 +519,6 @@ static int rockchip_saradc_probe(struct platform_device *pdev) info->uv_vref = ret; - ret = clk_prepare_enable(info->pclk); - if (ret < 0) { - dev_err(&pdev->dev, "failed to enable pclk\n"); - return ret; - } - ret = devm_add_action_or_reset(&pdev->dev, - rockchip_saradc_pclk_disable, info); - if (ret) { - dev_err(&pdev->dev, "failed to register devm action, %d\n", - ret); - return ret; - } - - ret = clk_prepare_enable(info->clk); - if (ret < 0) { - dev_err(&pdev->dev, "failed to enable converter clock\n"); - return ret; - } - ret = devm_add_action_or_reset(&pdev->dev, - rockchip_saradc_clk_disable, info); - if (ret) { - dev_err(&pdev->dev, "failed to register devm action, %d\n", - ret); - return ret; - } - platform_set_drvdata(pdev, indio_dev); indio_dev->name = dev_name(&pdev->dev); @@ -594,8 +554,6 @@ static int rockchip_saradc_suspend(struct device *dev) struct iio_dev *indio_dev = dev_get_drvdata(dev); struct rockchip_saradc *info = iio_priv(indio_dev); - clk_disable_unprepare(info->clk); - clk_disable_unprepare(info->pclk); regulator_disable(info->vref); return 0; @@ -605,21 +563,8 @@ static int rockchip_saradc_resume(struct device *dev) { struct iio_dev *indio_dev = dev_get_drvdata(dev); struct rockchip_saradc *info = iio_priv(indio_dev); - int ret; - - ret = regulator_enable(info->vref); - if (ret) - return ret; - - ret = clk_prepare_enable(info->pclk); - if (ret) - return ret; - - ret = clk_prepare_enable(info->clk); - if (ret) - clk_disable_unprepare(info->pclk); - return ret; + return regulator_enable(info->vref); } static DEFINE_SIMPLE_DEV_PM_OPS(rockchip_saradc_pm_ops,