From patchwork Wed Feb 20 13:07:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 1045345 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=st.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 444Hy60N9gz9sBK for ; Thu, 21 Feb 2019 00:09:50 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728154AbfBTNJ2 (ORCPT ); Wed, 20 Feb 2019 08:09:28 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:12236 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728029AbfBTNJ1 (ORCPT ); Wed, 20 Feb 2019 08:09:27 -0500 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1KD6MpZ018722; Wed, 20 Feb 2019 14:09:08 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2qr6x5s9f9-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 20 Feb 2019 14:09:08 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id B744231; Wed, 20 Feb 2019 13:09:07 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node3.st.com [10.75.127.15]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 8AABB2BB4; Wed, 20 Feb 2019 13:09:07 +0000 (GMT) Received: from localhost (10.75.127.45) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 20 Feb 2019 14:09:06 +0100 From: Fabrice Gasnier To: CC: , , , , , , , , , , , Subject: [PATCH v5 0/3] Add PM support to STM32 LP Timer drivers Date: Wed, 20 Feb 2019 14:07:45 +0100 Message-ID: <1550668068-9661-1-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.75.127.45] X-ClientProxiedBy: SFHDAG7NODE3.st.com (10.75.127.21) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-02-20_11:, , signatures=0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch series adds power management support for STM32 LP Timer: - PWM driver - Document the pinctrl states for sleep mode It also adds device link between the PWM consumer and the PWM provider. This allows proper sequencing for suspend/resume (e.g. user will likely do a pwm_disable() before the PWM provider suspend executes), see [1]. [1] https://lkml.org/lkml/2019/2/5/770 Acked-by: Uwe Kleine-König --- Changes in v5: - improve a warning message, fix a style issue. Changes in v4: - improve error handling when adding the PWM consumer device link. Changes in v3: - Move the device_link_add() call to of_pwm_get() as discussed with Uwe. Changes in v2: - Don't disable PWM channel in PWM provider: rather refuse to suspend and report an error as suggested by Uwe and Thierry. - Add patch 3/3 to propose device link addition. - No updates for STM32 LP Timer IIO driver. Patches can be send separately. Fabrice Gasnier (3): dt-bindings: pwm-stm32-lp: document pinctrl sleep state pwm: stm32-lp: Add power management support pwm: core: add consumer device link .../devicetree/bindings/pwm/pwm-stm32-lp.txt | 9 ++-- drivers/pwm/core.c | 50 ++++++++++++++++++++-- drivers/pwm/pwm-stm32-lp.c | 25 +++++++++++ include/linux/pwm.h | 6 ++- 4 files changed, 82 insertions(+), 8 deletions(-)