From patchwork Sun Oct 9 13:49:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 9368451 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 656DD60487 for ; Sun, 9 Oct 2016 13:44:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 571C128FA9 for ; Sun, 9 Oct 2016 13:44:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4B92528FA0; Sun, 9 Oct 2016 13:44:41 +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=ham 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 DB96628FA0 for ; Sun, 9 Oct 2016 13:44:40 +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 1btEPA-0007sn-Ab; Sun, 09 Oct 2016 13:44:40 +0000 Received: from lucky1.263xmail.com ([211.157.147.130]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1btEP7-0007oX-Ek for linux-rockchip@lists.infradead.org; Sun, 09 Oct 2016 13:44:38 +0000 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.138]) by lucky1.263xmail.com (Postfix) with ESMTP id 080BC1EE4FE; Sun, 9 Oct 2016 21:44:07 +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 1BAA8345; Sun, 9 Oct 2016 21:44:09 +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: <6ff58cd1f4851b8fb55c5a64edb5ad7c> 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 299863Y81XA; Sun, 09 Oct 2016 21:44:09 +0800 (CST) From: Shawn Lin To: Jaehoon Chung , Ulf Hansson Subject: [PATCH 4/9] mmc: dw_mmc-rockchip: disable biu clk if possible Date: Sun, 9 Oct 2016 21:49:05 +0800 Message-Id: <1476020951-31292-4-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1476020951-31292-1-git-send-email-shawn.lin@rock-chips.com> References: <1476020951-31292-1-git-send-email-shawn.lin@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161009_064437_900454_3CF80795 X-CRM114-Status: UNSURE ( 8.19 ) 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 We could disable biu clk and power-off genpd if gpio card detect available. Signed-off-by: Shawn Lin --- drivers/mmc/host/dw_mmc-rockchip.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c index 28e0220..7528720 100644 --- a/drivers/mmc/host/dw_mmc-rockchip.c +++ b/drivers/mmc/host/dw_mmc-rockchip.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include @@ -366,14 +367,29 @@ static int dw_mci_rockchip_remove(struct platform_device *pdev) static int dw_mci_rockchip_runtime_suspend(struct device *dev) { struct dw_mci *host = dev_get_drvdata(dev); + int ret; + + ret = dw_mci_runtime_suspend(host); + if (ret) + return ret; - return dw_mci_runtime_suspend(host); + if (host->cur_slot && + (mmc_can_gpio_cd(host->cur_slot->mmc) || + !mmc_card_is_removable(host->cur_slot->mmc))) + clk_disable_unprepare(host->biu_clk); + + return 0; } static int dw_mci_rockchip_runtime_resume(struct device *dev) { struct dw_mci *host = dev_get_drvdata(dev); + if (host->cur_slot && + (mmc_can_gpio_cd(host->cur_slot->mmc) || + !mmc_card_is_removable(host->cur_slot->mmc))) + clk_prepare_enable(host->biu_clk); + return dw_mci_runtime_resume(host); } #endif /* CONFIG_PM */