From patchwork Wed Oct 12 02:50:38 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 9372001 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 1BABA60487 for ; Wed, 12 Oct 2016 02:46:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 15A2A29192 for ; Wed, 12 Oct 2016 02:46:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 08C0D29194; Wed, 12 Oct 2016 02:46:41 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8B36D29192 for ; Wed, 12 Oct 2016 02:46:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752171AbcJLCqj (ORCPT ); Tue, 11 Oct 2016 22:46:39 -0400 Received: from lucky1.263xmail.com ([211.157.147.136]:50366 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751171AbcJLCqj (ORCPT ); Tue, 11 Oct 2016 22:46:39 -0400 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.160]) by lucky1.263xmail.com (Postfix) with ESMTP id 2110892; Wed, 12 Oct 2016 10:46:35 +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 D70913EF; Wed, 12 Oct 2016 10:46:32 +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: 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 21968W4N72W; Wed, 12 Oct 2016 10:46:34 +0800 (CST) From: Shawn Lin To: Jaehoon Chung , Ulf Hansson Cc: linux-mmc@vger.kernel.org, Doug Anderson , linux-rockchip@lists.infradead.org, Shawn Lin Subject: [PATCH v2 4/9] mmc: dw_mmc: disable biu clk if possible Date: Wed, 12 Oct 2016 10:50:38 +0800 Message-Id: <1476240643-5701-5-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> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP We could disable biu clk if gpio card detect available, or it is a non-removable device. Signed-off-by: Shawn Lin --- Changes in v2: None drivers/mmc/host/dw_mmc-rockchip.c | 1 + drivers/mmc/host/dw_mmc.c | 13 +++++++++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c index 0a05ad3..9a46e46 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 diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 67fa088..297b6c2 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -3336,6 +3336,11 @@ int dw_mci_runtime_suspend(struct device *dev) clk_disable_unprepare(host->ciu_clk); + 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 err; } EXPORT_SYMBOL(dw_mci_runtime_suspend); @@ -3345,6 +3350,14 @@ int dw_mci_runtime_resume(struct device *dev) int ret = 0; 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))) { + ret = clk_prepare_enable(host->biu_clk); + if (ret) + return ret; + } + ret = clk_prepare_enable(host->ciu_clk); if (ret) return ret;