From patchwork Wed Jul 1 09:41:02 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomeu Vizoso X-Patchwork-Id: 490004 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 8DED41402B9 for ; Wed, 1 Jul 2015 19:43:51 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=Vf5UK6WS; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753997AbbGAJnm (ORCPT ); Wed, 1 Jul 2015 05:43:42 -0400 Received: from mail-wi0-f171.google.com ([209.85.212.171]:36631 "EHLO mail-wi0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753785AbbGAJmp (ORCPT ); Wed, 1 Jul 2015 05:42:45 -0400 Received: by widjy10 with SMTP id jy10so52484506wid.1; Wed, 01 Jul 2015 02:42:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=jpfUz2PzpznLtO1Lknk3PjB7r/ACQKshvU+j5ThjjsI=; b=Vf5UK6WSmi5egBgAop0z/EdOntj8zcSdRkJKyh0vCXIT/3csualZFlBnOURJJTt7FB Q+iY17mnNazdv9cZztq69qLLojCYQ3tnkjmaFyuFVnzn6DSiRChw8bVZa1nRambXWGn9 itBULCzrqd/nUDumV4L1FmGec7wqPMrbvOqNnO9AiJdeytQ5XSATsWgKwl5ZnvKv0adC ZdqULAEWwNbDj/3rO2+WevQZbVIerYOU+VzTJr0mds0LdyhXitHfux/AJL+3MM1FYQt7 /RkxcHFP1TgrHDrktS5sXQf2kyQCY+DpJbesgvYxsqcfaW8PSkAZAoEzKUBpAstm6h4z nsxg== X-Received: by 10.180.108.142 with SMTP id hk14mr4718990wib.5.1435743762734; Wed, 01 Jul 2015 02:42:42 -0700 (PDT) Received: from cizrna.lan ([109.72.12.160]) by mx.google.com with ESMTPSA id x10sm1992663wjr.25.2015.07.01.02.42.40 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Jul 2015 02:42:41 -0700 (PDT) From: Tomeu Vizoso To: linux-kernel@vger.kernel.org Cc: Mark Brown , linux-acpi@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-pwm@vger.kernel.org, "Rafael J. Wysocki" , alsa-devel@alsa-project.org, Tomeu Vizoso , Tomi Valkeinen , Jingoo Han , Jean-Christophe Plagniol-Villard , Lee Jones Subject: [PATCH v2 07/12] backlight: register dependency parser for firmware nodes Date: Wed, 1 Jul 2015 11:41:02 +0200 Message-Id: <1435743667-11987-8-git-send-email-tomeu.vizoso@collabora.com> X-Mailer: git-send-email 2.4.1 In-Reply-To: <1435743667-11987-1-git-send-email-tomeu.vizoso@collabora.com> References: <1435743667-11987-1-git-send-email-tomeu.vizoso@collabora.com> Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org So others can find out what depends on backlight devices, as specified in bindings/video/backlight/backlight.txt. Signed-off-by: Tomeu Vizoso --- Changes in v2: None drivers/video/backlight/backlight.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index bddc8b1..ab8f5e7 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -566,8 +566,22 @@ struct backlight_device *of_find_backlight_by_node(struct device_node *node) EXPORT_SYMBOL(of_find_backlight_by_node); #endif +static void backlight_get_dependencies(struct fwnode_handle *fwnode, + struct list_head *deps) +{ + struct device_node *np; + + np = of_parse_phandle(to_of_node(fwnode), "backlight", 0); + if (!np) + return; + + fwnode_add_dependency(&np->fwnode, deps); +} + static void __exit backlight_class_exit(void) { + fwnode_remove_dependency_parser(backlight_get_dependencies); + class_destroy(backlight_class); } @@ -586,6 +600,8 @@ static int __init backlight_class_init(void) mutex_init(&backlight_dev_list_mutex); BLOCKING_INIT_NOTIFIER_HEAD(&backlight_notifier); + fwnode_add_dependency_parser(backlight_get_dependencies); + return 0; }