From patchwork Sun Nov 15 13:53:51 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Fu, Zhonghui" X-Patchwork-Id: 7619101 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 26A20BF90C for ; Sun, 15 Nov 2015 13:54:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E42F4205F0 for ; Sun, 15 Nov 2015 13:54:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 03D72205E3 for ; Sun, 15 Nov 2015 13:54:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751653AbbKONxz (ORCPT ); Sun, 15 Nov 2015 08:53:55 -0500 Received: from mga09.intel.com ([134.134.136.24]:23247 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751449AbbKONxz (ORCPT ); Sun, 15 Nov 2015 08:53:55 -0500 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP; 15 Nov 2015 05:53:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,297,1444719600"; d="scan'208";a="839286378" Received: from yzho37-mobl3.ccr.corp.intel.com (HELO [10.255.27.30]) ([10.255.27.30]) by fmsmga001.fm.intel.com with ESMTP; 15 Nov 2015 05:53:52 -0800 Message-ID: <56488E6F.3090109@linux.intel.com> Date: Sun, 15 Nov 2015 21:53:51 +0800 From: "Fu, Zhonghui" User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: ulf.hansson@linaro.org, adrian.hunter@intel.com, neilb@suse.de, jh80.chung@samsung.com, afenkart@gmail.com, joe@perches.com CC: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3] MMC/SDIO: enable SDIO device to suspend/resume asynchronously Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 timing dependency between devices. This patch enables SDIO card and function devices to suspend/resume asynchronously. This will take advantage of multicore and improve system suspend/resume speed. After enabling the SDIO devices and all their child devices to suspend/resume asynchronously on ASUS T100TA, the system suspend-to-idle time is reduced from 1645ms to 1119ms, and the system resume time is reduced from 940ms to 918ms. Signed-off-by: Zhonghui Fu --- Changes in v3: - Add test result in commit message drivers/mmc/core/sdio.c | 4 ++++ 1 files changed, 4 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/sdio.c b/drivers/mmc/core/sdio.c index 16d838e..530ce88 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -1113,6 +1113,8 @@ int mmc_attach_sdio(struct mmc_host *host) pm_runtime_enable(&card->dev); } + device_enable_async_suspend(&card->dev); + /* * The number of functions on the card is encoded inside * the ocr. @@ -1133,6 +1135,8 @@ int mmc_attach_sdio(struct mmc_host *host) */ if (host->caps & MMC_CAP_POWER_OFF_CARD) pm_runtime_enable(&card->sdio_func[i]->dev); + + device_enable_async_suspend(&card->sdio_func[i]->dev); } /*