From patchwork Wed Jul 1 08:21:56 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 6701111 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 72CF29F2F0 for ; Wed, 1 Jul 2015 08:23:02 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A0B99203A0 for ; Wed, 1 Jul 2015 08:23:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AF11F2034B for ; Wed, 1 Jul 2015 08:23:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753605AbbGAIW7 (ORCPT ); Wed, 1 Jul 2015 04:22:59 -0400 Received: from down.free-electrons.com ([37.187.137.238]:34364 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752582AbbGAIW1 (ORCPT ); Wed, 1 Jul 2015 04:22:27 -0400 Received: by mail.free-electrons.com (Postfix, from userid 106) id E5005243A; Wed, 1 Jul 2015 10:22:28 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from localhost.localdomain (col31-4-88-188-83-94.fbx.proxad.net [88.188.83.94]) by mail.free-electrons.com (Postfix) with ESMTPSA id 3B0CE243A; Wed, 1 Jul 2015 10:22:23 +0200 (CEST) From: Boris Brezillon To: Thierry Reding , linux-pwm@vger.kernel.org Cc: Mark Brown , Liam Girdwood , Bryan Wu , Richard Purdie , Jacek Anaszewski , linux-leds@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Jean-Christophe Plagniol-Villard , Tomi Valkeinen , linux-fbdev@vger.kernel.org, Stephen Warren , Alexandre Courbot , linux-tegra@vger.kernel.org, Maxime Ripard , Jingoo Han , Lee Jones , Doug Anderson , Boris Brezillon Subject: [RFC PATCH 10/15] pwm: add the PWM initial state retrieval infra Date: Wed, 1 Jul 2015 10:21:56 +0200 Message-Id: <1435738921-25027-11-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1435738921-25027-1-git-send-email-boris.brezillon@free-electrons.com> References: <1435738921-25027-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a ->init_state() function to the pwm_ops struct to let PWM drivers initialize the PWM state attached to a PWM device. Signed-off-by: Boris Brezillon --- drivers/pwm/core.c | 3 +++ include/linux/pwm.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 3e830ce..30631f5 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -264,6 +264,9 @@ int pwmchip_add_with_polarity(struct pwm_chip *chip, pwm->hwpwm = i; pwm_set_default_polarity(pwm, polarity); + if (chip->ops->init_state) + chip->ops->init_state(chip, pwm); + radix_tree_insert(&pwm_tree, pwm->pwm, pwm); } diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 0f36a06..b47244a 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -177,6 +177,8 @@ struct pwm_ops { struct pwm_device *pwm); void (*disable)(struct pwm_chip *chip, struct pwm_device *pwm); + void (*init_state)(struct pwm_chip *chip, + struct pwm_device *pwm); #ifdef CONFIG_DEBUG_FS void (*dbg_show)(struct pwm_chip *chip, struct seq_file *s);