From patchwork Wed Jan 2 13:44:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 10746373 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 683F96C2 for ; Wed, 2 Jan 2019 14:01:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 563CA288D2 for ; Wed, 2 Jan 2019 14:01:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 49D34288F6; Wed, 2 Jan 2019 14:01:12 +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,UNPARSEABLE_RELAY 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 4C431288D2 for ; Wed, 2 Jan 2019 14:01:11 +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: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=wV/1WXmKcwlu4IixvJa8QuOTn4fAHK6egDrxxfuwjvw=; b=htSRXSdxKxeSQ9 5O3zitn4hR2LGqxorbrgmAdSVMh3uMMyfGkLc6bHoJcnaMcmRcf1GwvsYkc8sTJTMQeTDAviU0lZH 1YRZeuO/74YIuXqRR1Shd5/UBuYeFlJeesw60vib4aHd5sne5x3dwovjDLu/5J1CP/FGn3arqp3Sx AaOXjS7TyUOroP+mc6AwlauUk+7Vrvgj+HaJ1oCw2eHDGQyfhbDlyLf0elALiQJIgAF88129R5Vw3 5eJWZAU7anHpdkcX4ooKETjhcNp/ItTXJpBW9a521lVYEsUkQ1Xh3vlu/+uMVucHlq2g6w691Agr+ tQSsr08gcbOV6ccC9EFA==; 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 1geh51-00087q-5v; Wed, 02 Jan 2019 14:01:07 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1geh4x-00086S-Q1; Wed, 02 Jan 2019 14:01:05 +0000 X-UUID: a8eb4142ffac4cb99784bb5fba787142-20190102 X-UUID: a8eb4142ffac4cb99784bb5fba787142-20190102 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1560076886; Wed, 02 Jan 2019 22:00:57 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 2 Jan 2019 22:00:56 +0800 Received: from mtkslt205.mediatek.inc (10.21.15.75) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 2 Jan 2019 22:00:56 +0800 From: Henry Chen To: Viresh Kumar , Stephen Boyd , Rob Herring , Matthias Brugger , Ulf Hansson Subject: [RFC PATCH 3/7] soc: mediatek: add support for the performance state Date: Wed, 2 Jan 2019 21:44:00 +0800 Message-ID: <1546436644-19234-4-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1546436644-19234-1-git-send-email-henryc.chen@mediatek.com> References: <1546436644-19234-1-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-20190102_060104_101674_ADBB0973 X-CRM114-Status: GOOD ( 17.20 ) 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 , James Liao , Kees Cook , Weiyi Lu , linux-pm@vger.kernel.org, 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 X-Virus-Scanned: ClamAV using ClamSMTP Support power domain performance state, add header file for scp event. Signed-off-by: Henry Chen --- drivers/soc/mediatek/mtk-scpsys.c | 60 +++++++++++++++++++++++++++++++++++++++ drivers/soc/mediatek/mtk-scpsys.h | 22 ++++++++++++++ 2 files changed, 82 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 58d84fe..90102ae 100644 --- a/drivers/soc/mediatek/mtk-scpsys.c +++ b/drivers/soc/mediatek/mtk-scpsys.c @@ -11,7 +11,9 @@ #include #include #include +#include #include +#include #include #include @@ -22,6 +24,7 @@ #include #include #include +#include "mtk-scpsys.h" #define MTK_POLL_DELAY_US 10 #define MTK_POLL_TIMEOUT (jiffies_to_usecs(HZ)) @@ -187,6 +190,18 @@ struct scp_soc_data { bool bus_prot_reg_update; }; +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; @@ -536,6 +551,48 @@ 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; + } + } + + 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) +{ + struct device_node *np; + unsigned int state; + + np = dev_pm_opp_get_of_node(opp); + + if (of_property_read_u32(np, "mtk,level", &state)) + return 0; + + of_node_put(np); + + return state; +} + 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, @@ -659,6 +716,9 @@ 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; + + 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__ */