From patchwork Tue Jan 31 00:46:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 13122102 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 706C0C54EAA for ; Tue, 31 Jan 2023 00:46:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=nbud+LWMSpXC2GoFneucGPfMziF0CArba7s1sV+0ZYk=; b=VZzC6Ap5vFSOWH DoxAAfXvZ5tn/uwdyTYGveMxilPnJ9V6B13zoPCfIJlsogW5h3M0G9/5q7BfbfioDshwyulIluHF1 vp+LKiAw2NXCIKxJmsuT1srm3xPKLW2qElCbP12iZZPCdgwQ9mQq5e4lUu0yQ5IVo0tMCb/TlC//m +l0TkyTxQGVxrGMA1G1rAEJXVJ0ZzUu+n4PtjItznt9gJVdXqImgksgO/N/94fTk74er/WucuTqvD BdBe42mXA+Q/QV1GvDemfKxltPrmp4iGsqwcb5XDEUvON7CxoJyO0DFV0FRpKCaWABZCLzc8uUbA/ Btjxyg9tQcqEKPK2E3Gg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMenP-005w8T-Ur; Tue, 31 Jan 2023 00:46:47 +0000 Received: from mail-m11875.qiye.163.com ([115.236.118.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMenK-005w63-QN for linux-rockchip@lists.infradead.org; Tue, 31 Jan 2023 00:46:46 +0000 Received: from localhost.localdomain (unknown [58.22.7.114]) by mail-m11875.qiye.163.com (Hmail) with ESMTPA id 1589C280193; Tue, 31 Jan 2023 08:46:39 +0800 (CST) From: Shawn Lin To: Ulf Hansson Cc: linux-mmc@vger.kernel.org, Adrian Hunter , linux-rockchip@lists.infradead.org, Shawn Lin Subject: [PATCH v2 2/3] mmc: sdhci-of-dwcmshc: Add runtime PM support Date: Tue, 31 Jan 2023 08:46:30 +0800 Message-Id: <1675125991-189452-3-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1675125991-189452-1-git-send-email-shawn.lin@rock-chips.com> References: <1675125991-189452-1-git-send-email-shawn.lin@rock-chips.com> X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFJSktLSjdXWS1ZQUlXWQ8JGhUIEh9ZQVkaTUhJVk8YQ0JMGh4dSx9PSFUTARMWGhIXJB QOD1lXWRgSC1lBWU5DVUlJVUxVSkpPWVdZFhoPEhUdFFlBWU9LSFVKSktISkxVSktLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6MRA6Ngw*Mz0TIj8rUS0WDApK CQIwCy5VSlVKTUxOSklOQkJCTk1LVTMWGhIXVQgTGgwVVRcSFTsJFBgQVhgTEgsIVRgUFkVZV1kS C1lBWU5DVUlJVUxVSkpPWVdZCAFZQUhNTko3Bg++ X-HM-Tid: 0a86054a465c2eb1kusn1589c280193 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230130_164643_017724_EE2E0178 X-CRM114-Status: GOOD ( 13.54 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org This patch adds runtime PM support. Signed-off-by: Shawn Lin --- drivers/mmc/host/sdhci-of-dwcmshc.c | 51 ++++++++++++++++++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c index 46b1ce7..fc917ed 100644 --- a/drivers/mmc/host/sdhci-of-dwcmshc.c +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -551,6 +552,13 @@ static int dwcmshc_probe(struct platform_device *pdev) if (err) goto err_setup_host; + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, 50); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_put_autosuspend(&pdev->dev); + return 0; err_setup_host: @@ -580,6 +588,11 @@ static int dwcmshc_remove(struct platform_device *pdev) if (rk_priv) clk_bulk_disable_unprepare(RK35xx_MAX_CLKS, rk_priv->rockchip_clks); + + pm_runtime_get_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); + sdhci_pltfm_free(pdev); return 0; @@ -638,7 +651,43 @@ static int dwcmshc_resume(struct device *dev) } #endif -static SIMPLE_DEV_PM_OPS(dwcmshc_pmops, dwcmshc_suspend, dwcmshc_resume); +#ifdef CONFIG_PM +static int dwcmshc_runtime_suspend(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + u16 data; + int ret; + + ret = sdhci_runtime_suspend_host(host); + if (ret) + return ret; + + data = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + data &= ~SDHCI_CLOCK_CARD_EN; + sdhci_writew(host, data, SDHCI_CLOCK_CONTROL); + + return 0; +} + +static int dwcmshc_runtime_resume(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + u16 data; + + data = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + data |= SDHCI_CLOCK_CARD_EN; + sdhci_writew(host, data, SDHCI_CLOCK_CONTROL); + + return sdhci_runtime_resume_host(host, 0); +} +#endif + +static const struct dev_pm_ops dwcmshc_pmops = { + SET_SYSTEM_SLEEP_PM_OPS(dwcmshc_suspend, + dwcmshc_resume) + SET_RUNTIME_PM_OPS(dwcmshc_runtime_suspend, + dwcmshc_runtime_resume, NULL) +}; static struct platform_driver sdhci_dwcmshc_driver = { .driver = {