From patchwork Thu Apr 18 09:37:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 1087478 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 Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=st.com header.i=@st.com header.b="lSB+4VAq"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44lDZ93PT2z9sCJ for ; Thu, 18 Apr 2019 19:38:41 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388507AbfDRJiP (ORCPT ); Thu, 18 Apr 2019 05:38:15 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:41752 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2387971AbfDRJiP (ORCPT ); Thu, 18 Apr 2019 05:38:15 -0400 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x3I9bPqI020922; Thu, 18 Apr 2019 11:37:58 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type : content-transfer-encoding; s=STMicroelectronics; bh=oY+qbuR5KQ2JTCEhWmdHC3SIJbwaKs2AJ9531INS5Ys=; b=lSB+4VAqAWsyxO8/wcrPRmoBlYzW7wxW9DSD6eJtUud2AXZdjdeT5cdhvxVKkRZJQMrk vA5ghnme89Qz7GLF8bU/PqbOE6S0PBZjkMbJnalTmhycsK9ayROSrv3F6HU4rX3NQgDa r8SCLl3IJLDkIZJBJ0S0KCCqEThM8no1iEBzFKkHrqxWFCYUBpdBDTiOts9/aA0qFgl6 VDbC6NPhYhgkYnyP+gY5ZjZZWCYo7ODcgC82QYVOfBpClNm2Gdb86/T/vI7559W0bpfW nw1bvs2igFdwXMceUyw6ARjUf7baRve/1FGaaIfrYJhGZXH8ZZ1TbN3hRuFpt8HYIfvW 7g== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2ru6nh4ycg-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 18 Apr 2019 11:37:58 +0200 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 1D8E541; Thu, 18 Apr 2019 09:37:57 +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 DFC8A159F; Thu, 18 Apr 2019 09:37:56 +0000 (GMT) Received: from localhost (10.75.127.44) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 18 Apr 2019 11:37:56 +0200 From: Fabrice Gasnier To: CC: , , , , , , , , , , , Subject: [RESEND PATCH v5 0/3] Add PM support to STM32 LP Timer drivers Date: Thu, 18 Apr 2019 11:37:44 +0200 Message-ID: <1555580267-29299-1-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.75.127.44] X-ClientProxiedBy: SFHDAG1NODE3.st.com (10.75.127.3) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-04-18_05:, , 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 --- resend v5: - update collected acks 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(-)