From patchwork Wed Jul 1 09:41:05 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomeu Vizoso X-Patchwork-Id: 490018 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 7E80614029C for ; Wed, 1 Jul 2015 19:47:49 +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=Qa9xa2H2; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754056AbbGAJoM (ORCPT ); Wed, 1 Jul 2015 05:44:12 -0400 Received: from mail-wg0-f53.google.com ([74.125.82.53]:32840 "EHLO mail-wg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751842AbbGAJnF (ORCPT ); Wed, 1 Jul 2015 05:43:05 -0400 Received: by wgck11 with SMTP id k11so31773728wgc.0; Wed, 01 Jul 2015 02:43:01 -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=OZjgf7Ey4+g4Uv9MgGWtFNwP6+UYq7TptwstkwFbylE=; b=Qa9xa2H2P+6jblDZIq12RJDKKaGCGC3608NWgsLaOL/jkoCio8ZNUm7W6PAwTBpC0U NbdzhSMsR55QyyzLNYuJDC14BVK5TdWH6U76llutdG9DIUFdqv6mvVqk9xqLuJQRsecs z6Pv8fDeZ/sF75JE7vFEXWlSov9pIm3BLHUOYsIQip6gOIq5AYCP9V6NMvyOuJr5Knlf bhgM+RdRAQOv0j+CAPq7DCgEvt3YZye2cminMMU3QIffjjlpu78i6llmsf1tN1w0JK8r 75qnCAnjb8fR3tr/D2xk/UBZQni5BRB2QMB3OdC9Z/hkwqZ6SNGTFi+Dq9iCoZYSjh5o PUlA== X-Received: by 10.194.109.229 with SMTP id hv5mr4694056wjb.119.1435743781271; Wed, 01 Jul 2015 02:43:01 -0700 (PDT) Received: from cizrna.lan ([109.72.12.160]) by mx.google.com with ESMTPSA id x10sm1992663wjr.25.2015.07.01.02.42.58 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Jul 2015 02:43:00 -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 , Thierry Reding Subject: [PATCH v2 10/12] pwm: register dependency parser for firmware nodes Date: Wed, 1 Jul 2015 11:41:05 +0200 Message-Id: <1435743667-11987-11-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-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org So others can find out what depends on pwm controllers, as specified in bindings/pwm/pwm.txt. Signed-off-by: Tomeu Vizoso --- Changes in v2: None drivers/pwm/core.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 3a7769f..81b4fc0 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -917,11 +917,39 @@ static const struct file_operations pwm_debugfs_ops = { .release = seq_release, }; +static void pwm_get_dependencies(struct fwnode_handle *fwnode, + struct list_head *deps) +{ + struct device_node *np; + struct of_phandle_args pspec; + int count, i, ret; + + np = to_of_node(fwnode); + if (!np) + return; + + count = of_count_phandle_with_args(np, "pwms", + "#pwm-cells"); + for (i = 0; i < count; i++) { + ret = of_parse_phandle_with_args(np, "pwms", + "#pwm-cells", i, + &pspec); + if (ret || !pspec.np) + continue; + + fwnode_add_dependency(&pspec.np->fwnode, deps); + + of_node_put(pspec.np); + } +} + static int __init pwm_debugfs_init(void) { debugfs_create_file("pwm", S_IFREG | S_IRUGO, NULL, NULL, &pwm_debugfs_ops); + fwnode_add_dependency_parser(pwm_get_dependencies); + return 0; }