From patchwork Tue Aug 22 13:12:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zetao X-Patchwork-Id: 716019 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 DC7F3EE49A3 for ; Tue, 22 Aug 2023 13:13:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236000AbjHVNND (ORCPT ); Tue, 22 Aug 2023 09:13:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233804AbjHVNNC (ORCPT ); Tue, 22 Aug 2023 09:13:02 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D82FABE for ; Tue, 22 Aug 2023 06:13:00 -0700 (PDT) Received: from kwepemi500012.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RVV9D6Z1TzrSP8; Tue, 22 Aug 2023 21:11:28 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500012.china.huawei.com (7.221.188.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Tue, 22 Aug 2023 21:12:56 +0800 From: Li Zetao To: , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , Subject: [PATCH -next 08/25] spi: spi-cadence: Use helper function devm_clk_get_enabled() Date: Tue, 22 Aug 2023 21:12:20 +0800 Message-ID: <20230822131237.1022815-9-lizetao1@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230822131237.1022815-1-lizetao1@huawei.com> References: <20230822131237.1022815-1-lizetao1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemi500012.china.huawei.com (7.221.188.12) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Signed-off-by: Li Zetao --- drivers/spi/spi-cadence.c | 23 +++-------------------- 1 file changed, 3 insertions(+), 20 deletions(-) diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c index 3c9813ad064b..174476bbdf54 100644 --- a/drivers/spi/spi-cadence.c +++ b/drivers/spi/spi-cadence.c @@ -576,31 +576,19 @@ static int cdns_spi_probe(struct platform_device *pdev) goto remove_ctlr; } - xspi->pclk = devm_clk_get(&pdev->dev, "pclk"); + xspi->pclk = devm_clk_get_enabled(&pdev->dev, "pclk"); if (IS_ERR(xspi->pclk)) { dev_err(&pdev->dev, "pclk clock not found.\n"); ret = PTR_ERR(xspi->pclk); goto remove_ctlr; } - ret = clk_prepare_enable(xspi->pclk); - if (ret) { - dev_err(&pdev->dev, "Unable to enable APB clock.\n"); - goto remove_ctlr; - } - if (!spi_controller_is_target(ctlr)) { - xspi->ref_clk = devm_clk_get(&pdev->dev, "ref_clk"); + xspi->ref_clk = devm_clk_get_enabled(&pdev->dev, "ref_clk"); if (IS_ERR(xspi->ref_clk)) { dev_err(&pdev->dev, "ref_clk clock not found.\n"); ret = PTR_ERR(xspi->ref_clk); - goto clk_dis_apb; - } - - ret = clk_prepare_enable(xspi->ref_clk); - if (ret) { - dev_err(&pdev->dev, "Unable to enable device clock.\n"); - goto clk_dis_apb; + goto remove_ctlr; } pm_runtime_use_autosuspend(&pdev->dev); @@ -674,10 +662,7 @@ static int cdns_spi_probe(struct platform_device *pdev) if (!spi_controller_is_target(ctlr)) { pm_runtime_set_suspended(&pdev->dev); pm_runtime_disable(&pdev->dev); - clk_disable_unprepare(xspi->ref_clk); } -clk_dis_apb: - clk_disable_unprepare(xspi->pclk); remove_ctlr: spi_controller_put(ctlr); return ret; @@ -698,8 +683,6 @@ static void cdns_spi_remove(struct platform_device *pdev) cdns_spi_write(xspi, CDNS_SPI_ER, CDNS_SPI_ER_DISABLE); - clk_disable_unprepare(xspi->ref_clk); - clk_disable_unprepare(xspi->pclk); pm_runtime_set_suspended(&pdev->dev); pm_runtime_disable(&pdev->dev);