From patchwork Wed Aug 23 13:39:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: lizetao X-Patchwork-Id: 13362530 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 C0CB8EE4993 for ; Wed, 23 Aug 2023 13:40:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235398AbjHWNkQ (ORCPT ); Wed, 23 Aug 2023 09:40:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236244AbjHWNkP (ORCPT ); Wed, 23 Aug 2023 09:40:15 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78CC4184 for ; Wed, 23 Aug 2023 06:40:13 -0700 (PDT) Received: from kwepemi500012.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4RW6jF5Hc2zTm8S; Wed, 23 Aug 2023 21:37:53 +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; Wed, 23 Aug 2023 21:40:08 +0800 From: Li Zetao To: CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Jonathan Cameron Subject: [PATCH -next v2 17/25] spi: microchip-core-qspi: Use helper function devm_clk_get_enabled() Date: Wed, 23 Aug 2023 21:39:30 +0800 Message-ID: <20230823133938.1359106-18-lizetao1@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230823133938.1359106-1-lizetao1@huawei.com> References: <20230822131237.1022815-1-lizetao1@huawei.com> <20230823133938.1359106-1-lizetao1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) 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. Reviewed-by: Jonathan Cameron Signed-off-by: Li Zetao --- v1 -> v2: None drivers/spi/spi-microchip-core-qspi.c | 29 +++++++-------------------- 1 file changed, 7 insertions(+), 22 deletions(-) diff --git a/drivers/spi/spi-microchip-core-qspi.c b/drivers/spi/spi-microchip-core-qspi.c index 4f76ddf97b10..396dfc0fa278 100644 --- a/drivers/spi/spi-microchip-core-qspi.c +++ b/drivers/spi/spi-microchip-core-qspi.c @@ -518,30 +518,23 @@ static int mchp_coreqspi_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, PTR_ERR(qspi->regs), "failed to map registers\n"); - qspi->clk = devm_clk_get(&pdev->dev, NULL); + qspi->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(qspi->clk)) return dev_err_probe(&pdev->dev, PTR_ERR(qspi->clk), "could not get clock\n"); - ret = clk_prepare_enable(qspi->clk); - if (ret) - return dev_err_probe(&pdev->dev, ret, - "failed to enable clock\n"); - init_completion(&qspi->data_completion); mutex_init(&qspi->op_lock); qspi->irq = platform_get_irq(pdev, 0); - if (qspi->irq < 0) { - ret = qspi->irq; - goto out; - } + if (qspi->irq < 0) + return qspi->irq; ret = devm_request_irq(&pdev->dev, qspi->irq, mchp_coreqspi_isr, IRQF_SHARED, pdev->name, qspi); if (ret) { dev_err(&pdev->dev, "request_irq failed %d\n", ret); - goto out; + return ret; } ctlr->bits_per_word_mask = SPI_BPW_MASK(8); @@ -552,18 +545,11 @@ static int mchp_coreqspi_probe(struct platform_device *pdev) ctlr->dev.of_node = np; ret = devm_spi_register_controller(&pdev->dev, ctlr); - if (ret) { - dev_err_probe(&pdev->dev, ret, - "spi_register_controller failed\n"); - goto out; - } + if (ret) + return dev_err_probe(&pdev->dev, ret, + "spi_register_controller failed\n"); return 0; - -out: - clk_disable_unprepare(qspi->clk); - - return ret; } static void mchp_coreqspi_remove(struct platform_device *pdev) @@ -574,7 +560,6 @@ static void mchp_coreqspi_remove(struct platform_device *pdev) mchp_coreqspi_disable_ints(qspi); control &= ~CONTROL_ENABLE; writel_relaxed(control, qspi->regs + REG_CONTROL); - clk_disable_unprepare(qspi->clk); } static const struct of_device_id mchp_coreqspi_of_match[] = {