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: 10906919 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CB03D1515 for ; Thu, 18 Apr 2019 09:38:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AF1532896D for ; Thu, 18 Apr 2019 09:38:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A271928C57; Thu, 18 Apr 2019 09:38:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 56A372896D for ; Thu, 18 Apr 2019 09:38:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=dx7F4ftTlmWtiLgv8SpC/NtLsvmsaH3B3PSMXwYBZAE=; b=A2SP+Pkzoelpzo vtgTRMC6fa+MoxMInzjsyGiSwqTRtbnYDupYAGFpCD11LsGm93W/rnZ30dHPYDtS29PNy9LqkoDUP 6KbfvC+gnZA65SbjP9dv89MUp/w42HFOT9KQgngjzBsvfSHRc6gzPH8F7xqpGvwd5tJzXTZimjoM2 hSIkJQ0a0q7girABag/PyKmsM6/7HFEzQZEbdC0PTGhqXpUqrALeNCqMKb88a1kYabxdumeNY0bTW WRsR1BxU687j6mS/4599qJqt+IlJKfI7Lt37pqO6zOjYwwzZiC2aV7jrIXchWY0Xlpdu+b19xwYy3 ABWmUWJKGt6oSGpbAb6g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hH3Uq-0006im-Fo; Thu, 18 Apr 2019 09:38:20 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hH3Ud-0006Wv-KT for linux-arm-kernel@lists.infradead.org; Thu, 18 Apr 2019 09:38:09 +0000 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: 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190418_023808_063550_6C88FB1B X-CRM114-Status: GOOD ( 13.69 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, alexandre.torgue@st.com, tduszyns@gmail.com, linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, robh+dt@kernel.org, mcoquelin.stm32@gmail.com, u.kleine-koenig@pengutronix.de, fabrice.gasnier@st.com, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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(-)