From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1B93ECE58E for ; Wed, 9 Oct 2019 11:59:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C5D38206C0 for ; Wed, 9 Oct 2019 11:59:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730111AbfJIL7p (ORCPT ); Wed, 9 Oct 2019 07:59:45 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:20897 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727002AbfJIL7p (ORCPT ); Wed, 9 Oct 2019 07:59:45 -0400 X-UUID: a82fbe2587054ba6bdcebd8107b1e22c-20191009 X-UUID: a82fbe2587054ba6bdcebd8107b1e22c-20191009 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 272460139; Wed, 09 Oct 2019 19:59:39 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 9 Oct 2019 19:59:35 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 9 Oct 2019 19:59:34 +0800 From: Yong Wu To: Matthias Brugger , Joerg Roedel CC: Will Deacon , Evan Green , Robin Murphy , Tomasz Figa , , , , , , , , Nicolas Boichat , , Subject: [PATCH] memory: mtk-smi: Add PM suspend and resume ops Date: Wed, 9 Oct 2019 19:59:33 +0800 Message-ID: <1570622373-16413-1-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In the commit 4f0a1a1ae351 ("memory: mtk-smi: Invoke pm runtime_callback to enable clocks"), we use pm_runtime callback to enable/disable the smi larb clocks. It will cause the larb's clock may not be disabled when suspend. That is because device_prepare will call pm_runtime_get_noresume which will keep the larb's PM runtime status still is active when suspend, then it won't enter our pm_runtime suspend callback to disable the corresponding clocks. This patch adds suspend pm_ops to force disable the clocks, Use "LATE" to make sure it disable the larb's clocks after the multimedia devices. Fixes: 4f0a1a1ae351 ("memory: mtk-smi: Invoke pm runtime_callback to enable clocks") Signed-off-by: Anan Sun Signed-off-by: Yong Wu --- base on v5.4-rc1. --- drivers/memory/mtk-smi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c index 439d7d8..a113e81 100644 --- a/drivers/memory/mtk-smi.c +++ b/drivers/memory/mtk-smi.c @@ -366,6 +366,8 @@ static int __maybe_unused mtk_smi_larb_suspend(struct device *dev) static const struct dev_pm_ops smi_larb_pm_ops = { SET_RUNTIME_PM_OPS(mtk_smi_larb_suspend, mtk_smi_larb_resume, NULL) + SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) }; static struct platform_driver mtk_smi_larb_driver = { @@ -507,6 +509,8 @@ static int __maybe_unused mtk_smi_common_suspend(struct device *dev) static const struct dev_pm_ops smi_common_pm_ops = { SET_RUNTIME_PM_OPS(mtk_smi_common_suspend, mtk_smi_common_resume, NULL) + SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) }; static struct platform_driver mtk_smi_common_driver = { -- 1.9.1