From patchwork Wed Aug 28 12:28:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 11118855 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 663BC14D5 for ; Wed, 28 Aug 2019 12:30:16 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4477122DA7 for ; Wed, 28 Aug 2019 12:30:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="braKYHWk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4477122DA7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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:References:In-Reply-To: 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: List-Owner; bh=NIoYQuZTklWi/KczeiZUIZUaHsYpWqgV2y5B8sYJC+4=; b=braKYHWkL0ugtN WqOTpHqHz8qFGx1NBxS9wRihBTrY9wVUVb6catus4eF6YMZ8GAW/bSeungiApzZi25Uv/HE3WZdoK xN8wfExLv5Dzb5ytva7cJjiN1mCHyaC+iLVTZs8ruzn5yTg5/VmPN0t5OfLNFoIawcSjMVlqiy63F YPkx2fazkTQ4Eb313hQhV/VCIwhpr74+GIonWmkETqUdxnc1Nyc8ZmmkLhiWsjFL2SQRk0hbIfHYE FcUdUp2Qvd2vql6DMGc8jqtC5v50FJYfTgRqk/KPC6dUcQ32PEBM1S25dMzcrERqQcMd+vQqUl3xz jgyE4avER1g7F8pE6IKw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i2x5a-0003gL-Bq; Wed, 28 Aug 2019 12:30:14 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i2x4M-0002MM-Oo; Wed, 28 Aug 2019 12:29:00 +0000 X-UUID: de93992e778244a7ba9099de65d92958-20190828 X-UUID: de93992e778244a7ba9099de65d92958-20190828 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1803454445; Wed, 28 Aug 2019 04:29:01 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 28 Aug 2019 05:29:00 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 28 Aug 2019 20:28:58 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 28 Aug 2019 20:28:58 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case Subject: [PATCH V3 03/10] soc: mediatek: add support for the performance state Date: Wed, 28 Aug 2019 20:28:41 +0800 Message-ID: <1566995328-15158-4-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1566995328-15158-1-git-send-email-henryc.chen@mediatek.com> References: <1566995328-15158-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190828_052858_812873_F9901E83 X-CRM114-Status: GOOD ( 16.92 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: James Liao , Weiyi Lu , Nicolas Boichat , linux-kernel@vger.kernel.org, Henry Chen , Fan Chen , devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, 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 Support power domain performance state, add header file for scp event. Signed-off-by: Henry Chen --- drivers/soc/mediatek/mtk-scpsys.c | 58 +++++++++++++++++++++++++++++++++++++++ drivers/soc/mediatek/mtk-scpsys.h | 22 +++++++++++++++ 2 files changed, 80 insertions(+) create mode 100644 drivers/soc/mediatek/mtk-scpsys.h diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c index e072810..50bc254 100644 --- a/drivers/soc/mediatek/mtk-scpsys.c +++ b/drivers/soc/mediatek/mtk-scpsys.c @@ -10,7 +10,9 @@ #include #include #include +#include #include +#include #include #include @@ -21,6 +23,7 @@ #include #include #include +#include "mtk-scpsys.h" #define MTK_POLL_DELAY_US 10 #define MTK_POLL_TIMEOUT USEC_PER_SEC @@ -187,6 +190,18 @@ struct scp_soc_data { bool bus_prot_reg_update; }; +static BLOCKING_NOTIFIER_HEAD(scpsys_notifier_list); + +int register_scpsys_notifier(struct notifier_block *nb) +{ + return blocking_notifier_chain_register(&scpsys_notifier_list, nb); +} + +int unregister_scpsys_notifier(struct notifier_block *nb) +{ + return blocking_notifier_chain_unregister(&scpsys_notifier_list, nb); +} + static int scpsys_domain_is_on(struct scp_domain *scpd) { struct scp *scp = scpd->scp; @@ -505,6 +520,41 @@ static void init_clks(struct platform_device *pdev, struct clk **clk) clk[i] = devm_clk_get(&pdev->dev, clk_names[i]); } +static int mtk_pd_set_performance(struct generic_pm_domain *genpd, + unsigned int state) +{ + int i; + struct scp_domain *scpd = + container_of(genpd, struct scp_domain, genpd); + struct scp_event_data scpe; + struct scp *scp = scpd->scp; + struct genpd_onecell_data *pd_data = &scp->pd_data; + + for (i = 0; i < pd_data->num_domains; i++) { + if (genpd == pd_data->domains[i]) { + dev_dbg(scp->dev, "%d. %s = %d\n", + i, genpd->name, state); + break; + } + } + + if (i == pd_data->num_domains) + return 0; + + scpe.event_type = MTK_SCPSYS_PSTATE; + scpe.genpd = genpd; + scpe.domain_id = i; + blocking_notifier_call_chain(&scpsys_notifier_list, state, &scpe); + + return 0; +} + +static unsigned int mtk_pd_get_performance(struct generic_pm_domain *genpd, + struct dev_pm_opp *opp) +{ + return dev_pm_opp_get_level(opp); +} + static struct scp *init_scp(struct platform_device *pdev, const struct scp_domain_data *scp_domain_data, int num, const struct scp_ctrl_reg *scp_ctrl_reg, @@ -630,6 +680,14 @@ static struct scp *init_scp(struct platform_device *pdev, genpd->power_on = scpsys_power_on; if (MTK_SCPD_CAPS(scpd, MTK_SCPD_ACTIVE_WAKEUP)) genpd->flags |= GENPD_FLAG_ACTIVE_WAKEUP; + + /* Add opp table check first to avoid OF runtime parse failed */ + if (of_count_phandle_with_args(pdev->dev.of_node, + "operating-points-v2", NULL) > 0) { + genpd->set_performance_state = mtk_pd_set_performance; + genpd->opp_to_performance_state = + mtk_pd_get_performance; + } } return scp; diff --git a/drivers/soc/mediatek/mtk-scpsys.h b/drivers/soc/mediatek/mtk-scpsys.h new file mode 100644 index 0000000..c1e8325 --- /dev/null +++ b/drivers/soc/mediatek/mtk-scpsys.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (c) 2018 MediaTek Inc. + */ + +#ifndef __MTK_SCPSYS_H__ +#define __MTK_SCPSYS_H__ + +struct scp_event_data { + int event_type; + int domain_id; + struct generic_pm_domain *genpd; +}; + +enum scp_event_type { + MTK_SCPSYS_PSTATE, +}; + +int register_scpsys_notifier(struct notifier_block *nb); +int unregister_scpsys_notifier(struct notifier_block *nb); + +#endif /* __MTK_SCPSYS_H__ */