From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753731AbbGAJpZ (ORCPT ); Wed, 1 Jul 2015 05:45:25 -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 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-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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; } -- 2.4.1