From patchwork Wed Oct 12 02:50:35 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 9371991 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 03E3A60487 for ; Wed, 12 Oct 2016 02:45:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EF25A28D97 for ; Wed, 12 Oct 2016 02:45:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DF07229172; Wed, 12 Oct 2016 02:45:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 72CAB28D97 for ; Wed, 12 Oct 2016 02:45:40 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bu9Y4-0007f0-2V; Wed, 12 Oct 2016 02:45:40 +0000 Received: from lucky1.263xmail.com ([211.157.147.136]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bu9Y1-0006xB-8B for linux-rockchip@lists.infradead.org; Wed, 12 Oct 2016 02:45:38 +0000 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.160]) by lucky1.263xmail.com (Postfix) with ESMTP id 4EB45125; Wed, 12 Oct 2016 10:45:13 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED4: 1 Received: from localhost.localdomain (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id B2E4B3D0; Wed, 12 Oct 2016 10:45:08 +0800 (CST) X-RL-SENDER: shawn.lin@rock-chips.com X-FST-TO: jh80.chung@samsung.com X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: shawn.lin@rock-chips.com X-UNIQUE-TAG: <1266baa9b228aed9a8eb2facdf303031> X-ATTACHMENT-NUM: 0 X-SENDER: lintao@rock-chips.com X-DNS-TYPE: 0 Received: from unknown (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith SMTP id 21968NEMQNM; Wed, 12 Oct 2016 10:45:11 +0800 (CST) From: Shawn Lin To: Jaehoon Chung , Ulf Hansson Subject: [PATCH v2 1/9] mmc: dw_mmc: add runtime PM callback Date: Wed, 12 Oct 2016 10:50:35 +0800 Message-Id: <1476240643-5701-2-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1476240643-5701-1-git-send-email-shawn.lin@rock-chips.com> References: <1476240643-5701-1-git-send-email-shawn.lin@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161011_194537_518467_1CB8A78D X-CRM114-Status: UNSURE ( 8.92 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-rockchip@lists.infradead.org, Shawn Lin , linux-mmc@vger.kernel.org, Doug Anderson MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch add dw_mci_runtime_suspend/resume interfaces and expose it to dw_mci variant driver to support runtime PM. Signed-off-by: Shawn Lin --- Changes in v2: - use struct device as argument for runtime callback drivers/mmc/host/dw_mmc.c | 32 ++++++++++++++++++++++++++++++-- drivers/mmc/host/dw_mmc.h | 4 +++- 2 files changed, 33 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 4fcbc40..67fa088 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -3266,7 +3266,7 @@ EXPORT_SYMBOL(dw_mci_remove); -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM /* * TODO: we should probably disable the clock to the card in the suspend path. */ @@ -3324,7 +3324,35 @@ int dw_mci_resume(struct dw_mci *host) return 0; } EXPORT_SYMBOL(dw_mci_resume); -#endif /* CONFIG_PM_SLEEP */ + +int dw_mci_runtime_suspend(struct device *dev) +{ + int err = 0; + struct dw_mci *host = dev_get_drvdata(dev); + + err = dw_mci_suspend(host); + if (err) + return err; + + clk_disable_unprepare(host->ciu_clk); + + return err; +} +EXPORT_SYMBOL(dw_mci_runtime_suspend); + +int dw_mci_runtime_resume(struct device *dev) +{ + int ret = 0; + struct dw_mci *host = dev_get_drvdata(dev); + + ret = clk_prepare_enable(host->ciu_clk); + if (ret) + return ret; + + return dw_mci_resume(host); +} +EXPORT_SYMBOL(dw_mci_runtime_resume); +#endif /* CONFIG_PM */ static int __init dw_mci_init(void) { diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index e8cd2de..d14a391 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -234,9 +234,11 @@ extern int dw_mci_probe(struct dw_mci *host); extern void dw_mci_remove(struct dw_mci *host); -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM extern int dw_mci_suspend(struct dw_mci *host); extern int dw_mci_resume(struct dw_mci *host); +extern int dw_mci_runtime_suspend(struct device *device); +extern int dw_mci_runtime_resume(struct device *device); #endif /**