From patchwork Fri Dec 4 13:05:56 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Fu, Zhonghui" X-Patchwork-Id: 7767791 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 24E96BEEE1 for ; Fri, 4 Dec 2015 13:06:03 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5586020592 for ; Fri, 4 Dec 2015 13:06:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E2D320481 for ; Fri, 4 Dec 2015 13:06:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751804AbbLDNGA (ORCPT ); Fri, 4 Dec 2015 08:06:00 -0500 Received: from mga14.intel.com ([192.55.52.115]:13494 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751441AbbLDNF7 (ORCPT ); Fri, 4 Dec 2015 08:05:59 -0500 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP; 04 Dec 2015 05:05:59 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,380,1444719600"; d="scan'208";a="612511966" Received: from yli161-mobl2.ccr.corp.intel.com (HELO [10.255.31.83]) ([10.255.31.83]) by FMSMGA003.fm.intel.com with ESMTP; 04 Dec 2015 05:05:57 -0800 To: Ulf Hansson Cc: Jaehoon Chung , hdegoede@redhat.com, "Wysocki, Rafael J" , s.hauer@pengutronix.de, linux-mmc , "linux-kernel@vger.kernel.org" From: "Fu, Zhonghui" Subject: [PATCH] mmc: enable MMC/SD/SDIO device to suspend/resume asynchronously Message-ID: <56618FB4.3020100@linux.intel.com> Date: Fri, 4 Dec 2015 21:05:56 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Now, PM core supports asynchronous suspend/resume mode for devices during system suspend/resume, and the power state transition of one device may be completed in separate kernel thread. PM core ensures all power state transition dependency between devices. This patch enables MMC/SD/SDIO card and SDIO function devices to suspend/resume asynchronously. This will take advantage of multicore and improve system suspend/resume speed. After applying this patch and enabling all SDIO function's child devices to suspend/resume asynchronously on ASUS T100TA, the system suspend-to-idle time is reduced from 1645ms to 1108ms, and the system resume time is reduced from 940ms to 918ms. Signed-off-by: Zhonghui Fu --- drivers/mmc/core/bus.c | 2 ++ drivers/mmc/core/sdio_bus.c | 1 + 2 files changed, 3 insertions(+), 0 deletions(-) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 972ff84..4bc48f1 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -349,6 +349,8 @@ int mmc_add_card(struct mmc_card *card) card->dev.of_node = mmc_of_find_child_device(card->host, 0); + device_enable_async_suspend(&card->dev); + ret = device_add(&card->dev); if (ret) return ret; diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 7e327a6..86f5b32 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -322,6 +322,7 @@ int sdio_add_func(struct sdio_func *func) sdio_set_of_node(func); sdio_acpi_set_handle(func); + device_enable_async_suspend(&func->dev); ret = device_add(&func->dev); if (ret == 0) sdio_func_set_present(func);