From patchwork Fri Aug 24 20:06:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Raju P.L.S.S.S.N" X-Patchwork-Id: 10575833 X-Patchwork-Delegate: agross@codeaurora.org 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 3EF1D1926 for ; Fri, 24 Aug 2018 20:07:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2EC862CBD5 for ; Fri, 24 Aug 2018 20:07:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2CF922CBD0; Fri, 24 Aug 2018 20:07:22 +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=-7.3 required=2.0 tests=BAYES_00,DKIM_SIGNED, FROM_LOCAL_NOVOWEL,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C5AA02CBE4 for ; Fri, 24 Aug 2018 20:07:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727134AbeHXXn0 (ORCPT ); Fri, 24 Aug 2018 19:43:26 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:52592 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726675AbeHXXnZ (ORCPT ); Fri, 24 Aug 2018 19:43:25 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 784B96053D; Fri, 24 Aug 2018 20:07:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1535141239; bh=80p+hVcHiozCeb8iIF+K72+zmyqyACym21JQWgbupek=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UPjo8tkzXSBLQBfj+UjRqY2ponTuCuOSxC078H8Ep+O1XRZadrW1lB+P9uxddaQKs KW66Cs3jU92j30uTw7Mr2j301DdvXVNksaGn8NcNQnO5RBkXq/Hy/Ua6WMJ6TirvwN UaEQlelRJhv2EekLa2mQd0ZCS4PbLTTLjhcEaKZQ= Received: from rplsssn-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rplsssn@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 88DBB60591; Fri, 24 Aug 2018 20:07:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1535141236; bh=80p+hVcHiozCeb8iIF+K72+zmyqyACym21JQWgbupek=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mhNF0QDHWKcLiSlJso50gNejM4/B9v6YGbIWCxQ22iMJ+9jmQgXloYUh0/0LqLchm rCmvFXo7JoHOOZCaXKn1MMvpqoZK5pgONMgHdTQoT3zmJ/nsTqcAhsFnb0vPIWfBdu JwoBpOO8GxGGbQgJlNEJlLQb7MIAwh3NqoSHv8t8= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 88DBB60591 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=rplsssn@codeaurora.org From: "Raju P.L.S.S.S.N" To: andy.gross@linaro.org, david.brown@linaro.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-pm@vger.kernel.org Cc: rnayak@codeaurora.org, bjorn.andersson@linaro.org, linux-kernel@vger.kernel.org, lorenzo.pieralisi@arm.com, rafael@kernel.org, drake@endlessm.com, sboyd@kernel.org, evgreen@chromium.org, dianders@chromium.org, mka@chromium.org, ilina@codeaurora.org, "Raju P.L.S.S.S.N" Subject: [PATCH RFC 3/6] drivers: qcom: system_pm: Add power management ops Date: Sat, 25 Aug 2018 01:36:25 +0530 Message-Id: <1535141188-29731-4-git-send-email-rplsssn@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1535141188-29731-1-git-send-email-rplsssn@codeaurora.org> References: <1535141188-29731-1-git-send-email-rplsssn@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add suspend power management ops so that the sleep & wake resource requests are flushed to corresponding TCS. The firmware would ensure that the buffered requests in TCS are sent to Resource Power Manager during entry to deepest low power modes. Signed-off-by: Raju P.L.S.S.S.N --- drivers/soc/qcom/Kconfig | 2 +- drivers/soc/qcom/system_pm.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index a52abe9..ac0e413 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -88,7 +88,7 @@ config QCOM_RPMH config QCOM_SYSTEM_PM bool "Qualcomm System PM" - depends on CPU_PM && QCOM_RPMH + depends on CPU_PM && PM_SLEEP && QCOM_RPMH help Support for QCOM platform system power management to perform tasks necessary while application processor votes for deeper modes so that diff --git a/drivers/soc/qcom/system_pm.c b/drivers/soc/qcom/system_pm.c index 40e5aa7..8810b84 100644 --- a/drivers/soc/qcom/system_pm.c +++ b/drivers/soc/qcom/system_pm.c @@ -67,6 +67,23 @@ static int sys_pm_probe(struct platform_device *pdev) return 0; } +static int sys_pm_suspend(struct device *dev) +{ + if (rpmh_ctrlr_idle(dev)) { + /* Flush the sleep/wake sets in RSC controller */ + rpmh_flush(dev); + } else { + pr_err("%s:rpmh controller is busy\n", __func__); + return -EBUSY; + } + + return 0; +} + +static const struct dev_pm_ops sys_pm_dev_pm_ops = { + SET_LATE_SYSTEM_SLEEP_PM_OPS(sys_pm_suspend, NULL) +}; + static const struct of_device_id sys_pm_drv_match[] = { { .compatible = "qcom,system-pm", }, { } @@ -77,6 +94,7 @@ static int sys_pm_probe(struct platform_device *pdev) .driver = { .name = KBUILD_MODNAME, .of_match_table = sys_pm_drv_match, + .pm = &sys_pm_dev_pm_ops, }, }; builtin_platform_driver(sys_pm_driver);