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Sun, 13 Sep 2020 19:11:53 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 13 Sep 2020 20:04:48 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 14 Sep 2020 11:04:48 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 14 Sep 2020 11:04:47 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case , Mark Brown Subject: [PATCH V5 03/17] soc: mediatek: add support for the performance state Date: Mon, 14 Sep 2020 11:04:30 +0800 Message-ID: <1600052684-21198-4-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1600052684-21198-1-git-send-email-henryc.chen@mediatek.com> References: <1600052684-21198-1-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-20200913_231210_370857_0DE04BE5 X-CRM114-Status: GOOD ( 23.29 ) 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: Mark Rutland , Nicolas Boichat , Mike Turquette , James Liao , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Henry Chen , Fan Chen , devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, Arvin Wang , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.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 19a0c7e..ad0ca52 100644 --- a/drivers/soc/mediatek/mtk-scpsys.c +++ b/drivers/soc/mediatek/mtk-scpsys.c @@ -11,8 +11,10 @@ #include #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 USEC_PER_SEC @@ -272,6 +275,18 @@ struct scp_soc_data { const struct scp_ctrl_reg regs; }; +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; @@ -294,6 +309,41 @@ static int scpsys_domain_is_on(struct scp_domain *scpd) return -EINVAL; } +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 int scpsys_regulator_enable(struct scp_domain *scpd) { if (!scpd->supply) @@ -800,6 +850,14 @@ 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__ */ -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel