From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1886BC04AAF for ; Mon, 20 May 2019 06:57:02 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DBAAB2081C for ; Mon, 20 May 2019 06:57:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Q7wOE3b+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DBAAB2081C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=P592W32WjH+Ppr+0Ug+c+W6BIRlcavYhubVeGrlUJgM=; b=Q7w OE3b+PgA5QLckkOcjpnPK/XbcyV68Gc1WLy05Q3NhMaVemGfXdqE5vXYT3Vnfqj/VVSgExQweQDuM JKpP8VkB+rWb2T3R28ZryHZxPOeKVcZaPvakShjuUhlTgfbG2036weFCYuzy2YRopyahqAVgcGjvt AJIzViCgGbo2X4yaNq6pS9lTyvP0VReirul2uZDoyqrN2FQKhFA7dL+2L2ID5/0lGcuQXMtwuLnLX jCtdDkb951+gCz1h/hD0+4FbTLVGdZyWXsUloNG8K3oZnCJDd5jfnG4OKk4i4cusCrjp7IFl5+A7n fjGU47fZePRjr8WS1rSXX6QDjWOTuSQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hScEA-0006jV-4z; Mon, 20 May 2019 06:56:54 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hScE0-0006bD-G6 for linux-arm-kernel@lists.infradead.org; Mon, 20 May 2019 06:56:46 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id BEF9320017C; Mon, 20 May 2019 08:56:41 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id B7F7220016F; Mon, 20 May 2019 08:56:35 +0200 (CEST) Received: from localhost.localdomain (mega.ap.freescale.net [10.192.208.232]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 5FA54402A2; Mon, 20 May 2019 14:56:28 +0800 (SGT) From: Ran Wang To: Li Yang , Rob Herring , Mark Rutland , Pavel Machek Subject: [PATCH v3 1/3] PM: wakeup: Add routine to help fetch wakeup source object. Date: Mon, 20 May 2019 14:58:14 +0800 Message-Id: <20190520065816.32360-1-ran.wang_1@nxp.com> X-Mailer: git-send-email 2.17.1 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190519_235645_126115_6FCB689B X-CRM114-Status: GOOD ( 11.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Len Brown , devicetree@vger.kernel.org, Greg Kroah-Hartman , linux-pm@vger.kernel.org, "Rafael J . Wysocki" , linux-kernel@vger.kernel.org, Ran Wang , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Some user might want to go through all registered wakeup sources and doing things accordingly. For example, SoC PM driver might need to do HW programming to prevent powering down specific IP which wakeup source depending on. And is user's responsibility to identify if this wakeup source he is interested in. Signed-off-by: Ran Wang --- Change in v3: - Adjust indentation of *attached_dev;. Change in v2: - None. drivers/base/power/wakeup.c | 18 ++++++++++++++++++ include/linux/pm_wakeup.h | 3 +++ 2 files changed, 21 insertions(+), 0 deletions(-) diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c index 5b2b6a0..6904485 100644 --- a/drivers/base/power/wakeup.c +++ b/drivers/base/power/wakeup.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -226,6 +227,22 @@ void wakeup_source_unregister(struct wakeup_source *ws) } } EXPORT_SYMBOL_GPL(wakeup_source_unregister); +/** + * wakeup_source_get_next - Get next wakeup source from the list + * @ws: Previous wakeup source object, null means caller want first one. + */ +struct wakeup_source *wakeup_source_get_next(struct wakeup_source *ws) +{ + struct list_head *ws_head = &wakeup_sources; + + if (ws) + return list_next_or_null_rcu(ws_head, &ws->entry, + struct wakeup_source, entry); + else + return list_entry_rcu(ws_head->next, + struct wakeup_source, entry); +} +EXPORT_SYMBOL_GPL(wakeup_source_get_next); /** * device_wakeup_attach - Attach a wakeup source object to a device object. @@ -242,6 +259,7 @@ static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws) return -EEXIST; } dev->power.wakeup = ws; + ws->attached_dev = dev; if (dev->power.wakeirq) device_wakeup_attach_irq(dev, dev->power.wakeirq); spin_unlock_irq(&dev->power.lock); diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h index 0ff134d..913b2fb 100644 --- a/include/linux/pm_wakeup.h +++ b/include/linux/pm_wakeup.h @@ -50,6 +50,7 @@ * @wakeup_count: Number of times the wakeup source might abort suspend. * @active: Status of the wakeup source. * @has_timeout: The wakeup source has been activated with a timeout. + * @attached_dev: The device it attached to */ struct wakeup_source { const char *name; @@ -70,6 +71,7 @@ struct wakeup_source { unsigned long wakeup_count; bool active:1; bool autosleep_enabled:1; + struct device *attached_dev; }; #ifdef CONFIG_PM_SLEEP @@ -101,6 +103,7 @@ static inline void device_set_wakeup_path(struct device *dev) extern void wakeup_source_remove(struct wakeup_source *ws); extern struct wakeup_source *wakeup_source_register(const char *name); extern void wakeup_source_unregister(struct wakeup_source *ws); +extern struct wakeup_source *wakeup_source_get_next(struct wakeup_source *ws); extern int device_wakeup_enable(struct device *dev); extern int device_wakeup_disable(struct device *dev); extern void device_set_wakeup_capable(struct device *dev, bool capable); -- 1.7.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel