From patchwork Fri Mar 13 09:34:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 212592 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MIME_BASE64_TEXT, 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 69B5EC10DCE for ; Fri, 13 Mar 2020 09:34:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 362AC2076C for ; Fri, 13 Mar 2020 09:34:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="ajJFdNBN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726393AbgCMJef (ORCPT ); Fri, 13 Mar 2020 05:34:35 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:61434 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726310AbgCMJef (ORCPT ); Fri, 13 Mar 2020 05:34:35 -0400 X-UUID: 0eb429159a15430a92231b74d74086d7-20200313 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=urwiCCeBhATqzkJKTdVUJzgoPbW2D5JW1FSyfotRgVM=; b=ajJFdNBNGTH1R5MiO1amJK4LhIKUSbWdp87okfryZVtAnfOK7siLMPCzrhwC1ewGKbf23cg4bvcWr2dolJ7LRDKCSpZVLUknWgspmKO+kqWgb/+kll3ibeexyOQsa2us1djHvJhsqX4EVjnlMEoDqWvtmg/Hkfp9+YwcdwqA5ac=; X-UUID: 0eb429159a15430a92231b74d74086d7-20200313 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1399102385; Fri, 13 Mar 2020 17:34:30 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 13 Mar 2020 17:31:39 +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; Fri, 13 Mar 2020 17:33:40 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case , Mark Brown CC: Mark Rutland , Nicolas Boichat , Fan Chen , James Liao , Arvin Wang , Mike Turquette , , , , , , , Henry Chen Subject: [PATCH V4 01/13] dt-bindings: soc: Add dvfsrc driver bindings Date: Fri, 13 Mar 2020 17:34:14 +0800 Message-ID: <1584092066-24425-2-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> References: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: A439D69B1AF57BF434D94321C469FB946C56643CA4E7071159E60B523D3951662000:8 X-MTK: N Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Document the binding for enabling dvfsrc on MediaTek SoC. Signed-off-by: Henry Chen Reviewed-by: Rob Herring --- .../devicetree/bindings/soc/mediatek/dvfsrc.txt | 23 ++++++++++++++++++++++ include/dt-bindings/soc/mtk,dvfsrc.h | 14 +++++++++++++ 2 files changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt create mode 100644 include/dt-bindings/soc/mtk,dvfsrc.h -- 1.9.1 diff --git a/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt new file mode 100644 index 0000000..7f43499 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt @@ -0,0 +1,23 @@ +MediaTek DVFSRC + +The Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC) is a +HW module which is used to collect all the requests from both software and +hardware and turn into the decision of minimum operating voltage and minimum +DRAM frequency to fulfill those requests. + +Required Properties: +- compatible: Should be one of the following + - "mediatek,mt8183-dvfsrc": For MT8183 SoC +- reg: Address range of the DVFSRC unit +- clock-names: Must include the following entries: + "dvfsrc": DVFSRC module clock +- clocks: Must contain an entry for each entry in clock-names. + +Example: + + dvfsrc@10012000 { + compatible = "mediatek,mt8183-dvfsrc"; + reg = <0 0x10012000 0 0x1000>; + clocks = <&infracfg CLK_INFRA_DVFSRC>; + clock-names = "dvfsrc"; + }; diff --git a/include/dt-bindings/soc/mtk,dvfsrc.h b/include/dt-bindings/soc/mtk,dvfsrc.h new file mode 100644 index 0000000..a522488 --- /dev/null +++ b/include/dt-bindings/soc/mtk,dvfsrc.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (c) 2018 MediaTek Inc. + */ + +#ifndef _DT_BINDINGS_POWER_MTK_DVFSRC_H +#define _DT_BINDINGS_POWER_MTK_DVFSRC_H + +#define MT8183_DVFSRC_LEVEL_1 1 +#define MT8183_DVFSRC_LEVEL_2 2 +#define MT8183_DVFSRC_LEVEL_3 3 +#define MT8183_DVFSRC_LEVEL_4 4 + +#endif /* _DT_BINDINGS_POWER_MTK_DVFSRC_H */ From patchwork Fri Mar 13 09:34:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 212591 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MIME_BASE64_TEXT, 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 2D6D7C4CECE for ; 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X-UUID: b371ff98c1b5471ca0f1b0dc8d36953f-20200313 Received: from mtkcas09.mediatek.inc [(172.21.101.178)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 609043105; Fri, 13 Mar 2020 17:34:30 +0800 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; Fri, 13 Mar 2020 17:32:17 +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; Fri, 13 Mar 2020 17:33:40 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case , Mark Brown CC: Mark Rutland , Nicolas Boichat , Fan Chen , James Liao , Arvin Wang , "Mike Turquette" , , , , , , , Henry Chen Subject: [PATCH V4 03/13] soc: mediatek: add support for the performance state Date: Fri, 13 Mar 2020 17:34:16 +0800 Message-ID: <1584092066-24425-4-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> References: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.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 -- 1.9.1 diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c index 8538408..add75a5 100644 --- a/drivers/soc/mediatek/mtk-scpsys.c +++ b/drivers/soc/mediatek/mtk-scpsys.c @@ -10,8 +10,10 @@ #include #include #include +#include #include #include +#include #include "scpsys.h" #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 @@ -150,6 +153,18 @@ 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; @@ -550,6 +565,41 @@ static int init_basic_clks(struct platform_device *pdev, struct clk **clk, return 0; } +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) @@ -650,6 +700,14 @@ 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__ */ From patchwork Fri Mar 13 09:34:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 212590 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MIME_BASE64_TEXT, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, USER_AGENT_GIT autolearn=unavailable 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 BB4D8C10DCE for ; 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X-UUID: d30094507bd1477cb18655c93aead84d-20200313 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1085969066; Fri, 13 Mar 2020 17:34:31 +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; Fri, 13 Mar 2020 17:33:00 +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; Fri, 13 Mar 2020 17:33:41 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case , Mark Brown CC: Mark Rutland , Nicolas Boichat , Fan Chen , James Liao , Arvin Wang , Mike Turquette , , , , , , , Henry Chen Subject: [PATCH V4 06/13] soc: mediatek: add MT8183 dvfsrc support Date: Fri, 13 Mar 2020 17:34:19 +0800 Message-ID: <1584092066-24425-7-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> References: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add dvfsrc driver for MT8183 Signed-off-by: Henry Chen --- drivers/soc/mediatek/Kconfig | 15 ++ drivers/soc/mediatek/Makefile | 1 + drivers/soc/mediatek/mtk-dvfsrc.c | 434 ++++++++++++++++++++++++++++++++++++++ include/soc/mediatek/mtk_dvfsrc.h | 30 +++ 4 files changed, 480 insertions(+) create mode 100644 drivers/soc/mediatek/mtk-dvfsrc.c create mode 100644 include/soc/mediatek/mtk_dvfsrc.h -- 1.9.1 diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig index f837b3c..44808f4 100644 --- a/drivers/soc/mediatek/Kconfig +++ b/drivers/soc/mediatek/Kconfig @@ -16,6 +16,21 @@ config MTK_CMDQ time limitation, such as updating display configuration during the vblank. +config MTK_DVFSRC + bool "MediaTek DVFSRC Support" + depends on ARCH_MEDIATEK + default ARCH_MEDIATEK + select MTK_INFRACFG + select PM_GENERIC_DOMAINS if PM + depends on MTK_SCPSYS + help + Say yes here to add support for the MediaTek DVFSRC (dynamic voltage + and frequency scaling resource collector) found + on different MediaTek SoCs. The DVFSRC is a proprietary + hardware which is used to collect all the requests from + system and turn into the decision of minimum Vcore voltage + and minimum DRAM frequency to fulfill those requests. + config MTK_PMIC_WRAP tristate "MediaTek PMIC Wrapper Support" depends on RESET_CONTROLLER diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile index 2b2c2537..84182f0 100644 --- a/drivers/soc/mediatek/Makefile +++ b/drivers/soc/mediatek/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_MTK_CMDQ) += mtk-cmdq-helper.o +obj-$(CONFIG_MTK_DVFSRC) += mtk-dvfsrc.o obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o diff --git a/drivers/soc/mediatek/mtk-dvfsrc.c b/drivers/soc/mediatek/mtk-dvfsrc.c new file mode 100644 index 0000000..85b3572 --- /dev/null +++ b/drivers/soc/mediatek/mtk-dvfsrc.c @@ -0,0 +1,434 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 MediaTek Inc. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "mtk-scpsys.h" + +#define DVFSRC_IDLE 0x00 +#define DVFSRC_GET_TARGET_LEVEL(x) (((x) >> 0) & 0x0000ffff) +#define DVFSRC_GET_CURRENT_LEVEL(x) (((x) >> 16) & 0x0000ffff) +#define kbps_to_mbps(x) ((x) / 1000) + +#define MT8183_DVFSRC_OPP_LP4 0 +#define MT8183_DVFSRC_OPP_LP4X 1 +#define MT8183_DVFSRC_OPP_LP3 2 + +#define POLL_TIMEOUT 1000 +#define STARTUP_TIME 1 + +struct dvfsrc_opp { + u32 vcore_opp; + u32 dram_opp; +}; + +struct dvfsrc_domain { + u32 id; + u32 state; +}; + +struct mtk_dvfsrc; +struct dvfsrc_soc_data { + const int *regs; + u32 num_opp; + u32 num_domains; + const struct dvfsrc_opp **opps; + struct dvfsrc_domain *domains; + int (*get_target_level)(struct mtk_dvfsrc *dvfsrc); + int (*get_current_level)(struct mtk_dvfsrc *dvfsrc); + u32 (*get_vcore_level)(struct mtk_dvfsrc *dvfsrc); + void (*set_dram_bw)(struct mtk_dvfsrc *dvfsrc, u64 bw); + void (*set_opp_level)(struct mtk_dvfsrc *dvfsrc, u32 level); + void (*set_vcore_level)(struct mtk_dvfsrc *dvfsrc, u32 level); + int (*wait_for_opp_level)(struct mtk_dvfsrc *dvfsrc, u32 level); + int (*wait_for_vcore_level)(struct mtk_dvfsrc *dvfsrc, u32 level); +}; + +struct mtk_dvfsrc { + struct device *dev; + struct clk *clk_dvfsrc; + const struct dvfsrc_soc_data *dvd; + int dram_type; + void __iomem *regs; + struct mutex req_lock; + struct mutex pstate_lock; + struct notifier_block scpsys_notifier; +}; + +static u32 dvfsrc_read(struct mtk_dvfsrc *dvfs, u32 offset) +{ + return readl(dvfs->regs + dvfs->dvd->regs[offset]); +} + +static void dvfsrc_write(struct mtk_dvfsrc *dvfs, u32 offset, u32 val) +{ + writel(val, dvfs->regs + dvfs->dvd->regs[offset]); +} + +enum dvfsrc_regs { + DVFSRC_SW_REQ, + DVFSRC_SW_REQ2, + DVFSRC_LEVEL, + DVFSRC_SW_BW, + DVFSRC_LAST, +}; + +static const int mt8183_regs[] = { + [DVFSRC_SW_REQ] = 0x4, + [DVFSRC_SW_REQ2] = 0x8, + [DVFSRC_LEVEL] = 0xDC, + [DVFSRC_SW_BW] = 0x160, + [DVFSRC_LAST] = 0x308, +}; + +static const struct dvfsrc_opp *get_current_opp(struct mtk_dvfsrc *dvfsrc) +{ + int level; + + level = dvfsrc->dvd->get_current_level(dvfsrc); + return &dvfsrc->dvd->opps[dvfsrc->dram_type][level]; +} + +static int dvfsrc_is_idle(struct mtk_dvfsrc *dvfsrc) +{ + if (!dvfsrc->dvd->get_target_level) + return true; + + return dvfsrc->dvd->get_target_level(dvfsrc); +} + +static int dvfsrc_wait_for_vcore_level(struct mtk_dvfsrc *dvfsrc, u32 level) +{ + const struct dvfsrc_opp *curr; + + return readx_poll_timeout_atomic(get_current_opp, dvfsrc, curr, + curr->vcore_opp >= level, STARTUP_TIME, + POLL_TIMEOUT); +} + +static int mt8183_wait_for_opp_level(struct mtk_dvfsrc *dvfsrc, u32 level) +{ + const struct dvfsrc_opp *target, *curr; + int ret; + + target = &dvfsrc->dvd->opps[dvfsrc->dram_type][level]; + ret = readx_poll_timeout(get_current_opp, dvfsrc, curr, + curr->dram_opp >= target->dram_opp && + curr->vcore_opp >= target->vcore_opp, + STARTUP_TIME, POLL_TIMEOUT); + if (ret < 0) { + dev_warn(dvfsrc->dev, + "timeout, target: %u, dram: %d, vcore: %d\n", level, + curr->dram_opp, curr->vcore_opp); + return ret; + } + + return 0; +} + +static int mt8183_get_target_level(struct mtk_dvfsrc *dvfsrc) +{ + return DVFSRC_GET_TARGET_LEVEL(dvfsrc_read(dvfsrc, DVFSRC_LEVEL)); +} + +static int mt8183_get_current_level(struct mtk_dvfsrc *dvfsrc) +{ + int level; + + /* HW level 0 is begin from 0x10000 */ + level = DVFSRC_GET_CURRENT_LEVEL(dvfsrc_read(dvfsrc, DVFSRC_LEVEL)); + /* Array index start from 0 */ + return ffs(level) - 1; +} + +static u32 mt8183_get_vcore_level(struct mtk_dvfsrc *dvfsrc) +{ + return (dvfsrc_read(dvfsrc, DVFSRC_SW_REQ2) >> 2) & 0x3; +} + +static void mt8183_set_dram_bw(struct mtk_dvfsrc *dvfsrc, u64 bw) +{ + dvfsrc_write(dvfsrc, DVFSRC_SW_BW, kbps_to_mbps(bw) / 100); +} + +static void mt8183_set_opp_level(struct mtk_dvfsrc *dvfsrc, u32 level) +{ + int vcore_opp, dram_opp; + const struct dvfsrc_opp *opp; + + /* translate pstate to dvfsrc level, and set it to DVFSRC HW */ + opp = &dvfsrc->dvd->opps[dvfsrc->dram_type][level]; + vcore_opp = opp->vcore_opp; + dram_opp = opp->dram_opp; + + dev_dbg(dvfsrc->dev, "vcore_opp: %d, dram_opp: %d\n", + vcore_opp, dram_opp); + dvfsrc_write(dvfsrc, DVFSRC_SW_REQ, dram_opp | vcore_opp << 2); +} + +static void mt8183_set_vcore_level(struct mtk_dvfsrc *dvfsrc, u32 level) +{ + dvfsrc_write(dvfsrc, DVFSRC_SW_REQ2, level << 2); +} + +void mtk_dvfsrc_send_request(const struct device *dev, u32 cmd, u64 data) +{ + int ret, state; + struct mtk_dvfsrc *dvfsrc = dev_get_drvdata(dev); + + dev_dbg(dvfsrc->dev, "cmd: %d, data: %llu\n", cmd, data); + + mutex_lock(&dvfsrc->req_lock); + + switch (cmd) { + case MTK_DVFSRC_CMD_BW_REQUEST: + dvfsrc->dvd->set_dram_bw(dvfsrc, data); + goto out; + case MTK_DVFSRC_CMD_OPP_REQUEST: + dvfsrc->dvd->set_opp_level(dvfsrc, data); + break; + case MTK_DVFSRC_CMD_VCORE_REQUEST: + dvfsrc->dvd->set_vcore_level(dvfsrc, data); + break; + default: + dev_err(dvfsrc->dev, "unknown command: %d\n", cmd); + goto out; + } + + /* DVFSRC need to wait at least 2T(~196ns) to handle request + * after recieving command + */ + udelay(STARTUP_TIME); + + ret = readx_poll_timeout(dvfsrc_is_idle, dvfsrc, + state, state == DVFSRC_IDLE, + STARTUP_TIME, POLL_TIMEOUT); + + if (ret < 0) { + dev_warn(dvfsrc->dev, + "%d: idle timeout, data: %llu, last: %d -> %d\n", + cmd, data, + dvfsrc->dvd->get_current_level(dvfsrc), + dvfsrc->dvd->get_target_level(dvfsrc)); + goto out; + } + + if (cmd == MTK_DVFSRC_CMD_OPP_REQUEST) + dvfsrc->dvd->wait_for_opp_level(dvfsrc, data); + else + dvfsrc->dvd->wait_for_vcore_level(dvfsrc, data); + +out: + mutex_unlock(&dvfsrc->req_lock); +} +EXPORT_SYMBOL(mtk_dvfsrc_send_request); + +int mtk_dvfsrc_query_info(const struct device *dev, u32 cmd, int *data) +{ + struct mtk_dvfsrc *dvfsrc = dev_get_drvdata(dev); + + switch (cmd) { + case MTK_DVFSRC_CMD_VCORE_QUERY: + *data = dvfsrc->dvd->get_vcore_level(dvfsrc); + break; + default: + return -EINVAL; + } + + return 0; +} +EXPORT_SYMBOL(mtk_dvfsrc_query_info); + +static int dvfsrc_set_performance(struct notifier_block *b, + unsigned long pstate, void *v) +{ + bool match = false; + int i; + struct mtk_dvfsrc *dvfsrc; + struct scp_event_data *sc = v; + struct dvfsrc_domain *d; + u32 highest; + + if (sc->event_type != MTK_SCPSYS_PSTATE) + return 0; + + dvfsrc = container_of(b, struct mtk_dvfsrc, scpsys_notifier); + + d = dvfsrc->dvd->domains; + + if (pstate > dvfsrc->dvd->num_opp) { + dev_err(dvfsrc->dev, "pstate out of range = %ld\n", pstate); + return 0; + } + + mutex_lock(&dvfsrc->pstate_lock); + + for (i = 0, highest = 0; i < dvfsrc->dvd->num_domains; i++, d++) { + if (sc->domain_id == d->id) { + d->state = pstate; + match = true; + } + highest = max(highest, d->state); + } + + if (!match) + goto out; + + /* pstat start from level 1, array index start from 0 */ + mtk_dvfsrc_send_request(dvfsrc->dev, MTK_DVFSRC_CMD_OPP_REQUEST, + highest - 1); + +out: + mutex_unlock(&dvfsrc->pstate_lock); + return 0; +} + +static void pstate_notifier_register(struct mtk_dvfsrc *dvfsrc) +{ + dvfsrc->scpsys_notifier.notifier_call = dvfsrc_set_performance; + register_scpsys_notifier(&dvfsrc->scpsys_notifier); +} + +static int mtk_dvfsrc_probe(struct platform_device *pdev) +{ + struct arm_smccc_res ares; + struct resource *res; + struct mtk_dvfsrc *dvfsrc; + int ret; + + dvfsrc = devm_kzalloc(&pdev->dev, sizeof(*dvfsrc), GFP_KERNEL); + if (!dvfsrc) + return -ENOMEM; + + dvfsrc->dvd = of_device_get_match_data(&pdev->dev); + dvfsrc->dev = &pdev->dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + dvfsrc->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(dvfsrc->regs)) + return PTR_ERR(dvfsrc->regs); + + dvfsrc->clk_dvfsrc = devm_clk_get(dvfsrc->dev, "dvfsrc"); + if (IS_ERR(dvfsrc->clk_dvfsrc)) { + dev_err(dvfsrc->dev, "failed to get clock: %ld\n", + PTR_ERR(dvfsrc->clk_dvfsrc)); + return PTR_ERR(dvfsrc->clk_dvfsrc); + } + + ret = clk_prepare_enable(dvfsrc->clk_dvfsrc); + if (ret) + return ret; + + mutex_init(&dvfsrc->req_lock); + mutex_init(&dvfsrc->pstate_lock); + + arm_smccc_smc(MTK_SIP_SPM, MTK_SIP_SPM_DVFSRC_INIT, 0, 0, 0, 0, 0, 0, + &ares); + + if (!ares.a0) { + dvfsrc->dram_type = ares.a1; + dev_info(dvfsrc->dev, "dram_type: %d\n", dvfsrc->dram_type); + } else { + dev_err(dvfsrc->dev, "init fails: %lu\n", ares.a0); + clk_disable_unprepare(dvfsrc->clk_dvfsrc); + return ares.a0; + } + + platform_set_drvdata(pdev, dvfsrc); + pstate_notifier_register(dvfsrc); + + return devm_of_platform_populate(&pdev->dev); +} + +static const struct dvfsrc_opp dvfsrc_opp_mt8183_lp4[] = { + {0, 0}, {0, 1}, {0, 2}, {1, 2}, +}; + +static const struct dvfsrc_opp dvfsrc_opp_mt8183_lp3[] = { + {0, 0}, {0, 1}, {1, 1}, {1, 2}, +}; + +static const struct dvfsrc_opp *dvfsrc_opp_mt8183[] = { + [MT8183_DVFSRC_OPP_LP4] = dvfsrc_opp_mt8183_lp4, + [MT8183_DVFSRC_OPP_LP4X] = dvfsrc_opp_mt8183_lp3, + [MT8183_DVFSRC_OPP_LP3] = dvfsrc_opp_mt8183_lp3, +}; + +static struct dvfsrc_domain dvfsrc_domains_mt8183[] = { + { MT8183_POWER_DOMAIN_MFG_ASYNC, 0 }, + { MT8183_POWER_DOMAIN_MFG, 0 }, + { MT8183_POWER_DOMAIN_CAM, 0 }, + { MT8183_POWER_DOMAIN_DISP, 0 }, + { MT8183_POWER_DOMAIN_ISP, 0 }, + { MT8183_POWER_DOMAIN_VDEC, 0 }, + { MT8183_POWER_DOMAIN_VENC, 0 }, +}; + +static const struct dvfsrc_soc_data mt8183_data = { + .opps = dvfsrc_opp_mt8183, + .num_opp = ARRAY_SIZE(dvfsrc_opp_mt8183_lp4), + .regs = mt8183_regs, + .domains = dvfsrc_domains_mt8183, + .num_domains = ARRAY_SIZE(dvfsrc_domains_mt8183), + .get_target_level = mt8183_get_target_level, + .get_current_level = mt8183_get_current_level, + .get_vcore_level = mt8183_get_vcore_level, + .set_dram_bw = mt8183_set_dram_bw, + .set_opp_level = mt8183_set_opp_level, + .set_vcore_level = mt8183_set_vcore_level, + .wait_for_opp_level = mt8183_wait_for_opp_level, + .wait_for_vcore_level = dvfsrc_wait_for_vcore_level, +}; + +static int mtk_dvfsrc_remove(struct platform_device *pdev) +{ + struct mtk_dvfsrc *dvfsrc = platform_get_drvdata(pdev); + + clk_disable_unprepare(dvfsrc->clk_dvfsrc); + + return 0; +} + +static const struct of_device_id mtk_dvfsrc_of_match[] = { + { + .compatible = "mediatek,mt8183-dvfsrc", + .data = &mt8183_data, + }, { + /* sentinel */ + }, +}; + +static struct platform_driver mtk_dvfsrc_driver = { + .probe = mtk_dvfsrc_probe, + .remove = mtk_dvfsrc_remove, + .driver = { + .name = "mtk-dvfsrc", + .of_match_table = of_match_ptr(mtk_dvfsrc_of_match), + }, +}; + +static int __init mtk_dvfsrc_init(void) +{ + return platform_driver_register(&mtk_dvfsrc_driver); +} +subsys_initcall(mtk_dvfsrc_init); + +static void __exit mtk_dvfsrc_exit(void) +{ + platform_driver_unregister(&mtk_dvfsrc_driver); +} +module_exit(mtk_dvfsrc_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("MTK DVFSRC driver"); diff --git a/include/soc/mediatek/mtk_dvfsrc.h b/include/soc/mediatek/mtk_dvfsrc.h new file mode 100644 index 0000000..06ad201 --- /dev/null +++ b/include/soc/mediatek/mtk_dvfsrc.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (c) 2018 MediaTek Inc. + */ +#ifndef __SOC_MTK_DVFSRC_H +#define __SOC_MTK_DVFSRC_H + +#define MTK_DVFSRC_CMD_BW_REQUEST 0 +#define MTK_DVFSRC_CMD_OPP_REQUEST 1 +#define MTK_DVFSRC_CMD_VCORE_REQUEST 2 + +#define MTK_DVFSRC_CMD_VCORE_QUERY 0 + +#if IS_ENABLED(CONFIG_MTK_DVFSRC) +void mtk_dvfsrc_send_request(const struct device *dev, u32 cmd, u64 data); +int mtk_dvfsrc_query_info(const struct device *dev, u32 cmd, int *data); + +#else + +static inline void mtk_dvfsrc_send_request(const struct device *dev, u32 cmd, + u64 data) +{ return -ENODEV; } + +static inline int mtk_dvfsrc_query_info(const struct device *dev, u32 cmd, + int *data); +{ return -ENODEV; } + +#endif /* CONFIG_MTK_DVFSRC */ + +#endif From patchwork Fri Mar 13 09:34:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 212588 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MIME_BASE64_TEXT, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 83356C10DCE for ; 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X-UUID: aa9c2e754ea8454584ffbf7aa35c2b2c-20200313 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 76565111; Fri, 13 Mar 2020 17:34:30 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 13 Mar 2020 17:31:40 +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; Fri, 13 Mar 2020 17:33:41 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case , Mark Brown CC: Mark Rutland , Nicolas Boichat , Fan Chen , James Liao , Arvin Wang , Mike Turquette , , , , , , , Henry Chen Subject: [PATCH V4 07/13] arm64: dts: mt8183: add dvfsrc related nodes Date: Fri, 13 Mar 2020 17:34:20 +0800 Message-ID: <1584092066-24425-8-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> References: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: A0791F700786907366ACDAA2D3C47FD9579E2C97AFB46EE0B30FD38C6122C57D2000:8 X-MTK: N Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Enable dvfsrc on mt8183 platform. Signed-off-by: Henry Chen --- arch/arm64/boot/dts/mediatek/mt8183.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) -- 1.9.1 diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi index 7bf20ca..c0d08c8 100644 --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi @@ -159,6 +159,13 @@ clock-output-names = "clk26m"; }; + dvfsrc@10012000 { + compatible = "mediatek,mt8183-dvfsrc"; + reg = <0 0x10012000 0 0x1000>; + clocks = <&infracfg CLK_INFRA_DVFSRC>; + clock-names = "dvfsrc"; + }; + timer { compatible = "arm,armv8-timer"; interrupt-parent = <&gic>; From patchwork Fri Mar 13 09:34:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 212587 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MIME_BASE64_TEXT, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 28E2AC10DCE for ; Fri, 13 Mar 2020 09:35:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F39B720746 for ; Fri, 13 Mar 2020 09:35:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="Nh1Yrv50" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726539AbgCMJeg (ORCPT ); Fri, 13 Mar 2020 05:34:36 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:12079 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726377AbgCMJef (ORCPT ); Fri, 13 Mar 2020 05:34:35 -0400 X-UUID: fde83ec298e04a80834a9d2e4d453eef-20200313 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=dHVIssRQ//ChPQ0rQbsqbfW2EvYkungBACJezcgPQ3Y=; b=Nh1Yrv507nI8PNsTjY//9qa99WyonrmMS9EkFoLLQj+CTKWmcMPKt8sW/D3z5NDJO5CYJ0+/uL3KLQmDUn8oYB37iCY90lXOn5EehObXSvbtDwMxmkp+7PHY2Wd4KdOAtweiPacZSFNL2AN7FqQBDYroGyMBIkx+clGbEZ+Bh60=; X-UUID: fde83ec298e04a80834a9d2e4d453eef-20200313 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 121892569; Fri, 13 Mar 2020 17:34:31 +0800 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; Fri, 13 Mar 2020 17:32:17 +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; Fri, 13 Mar 2020 17:33:41 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case , Mark Brown CC: Mark Rutland , Nicolas Boichat , Fan Chen , James Liao , Arvin Wang , Mike Turquette , , , , , , , Henry Chen Subject: [PATCH V4 08/13] dt-bindings: interconnect: add MT8183 interconnect dt-bindings Date: Fri, 13 Mar 2020 17:34:21 +0800 Message-ID: <1584092066-24425-9-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> References: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add interconnect provider dt-bindings for MT8183. Signed-off-by: Henry Chen --- .../devicetree/bindings/soc/mediatek/dvfsrc.txt | 9 +++++++++ include/dt-bindings/interconnect/mtk,mt8183-emi.h | 18 ++++++++++++++++++ 2 files changed, 27 insertions(+) create mode 100644 include/dt-bindings/interconnect/mtk,mt8183-emi.h -- 1.9.1 diff --git a/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt index 7f43499..da98ec9 100644 --- a/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt +++ b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt @@ -12,6 +12,11 @@ Required Properties: - clock-names: Must include the following entries: "dvfsrc": DVFSRC module clock - clocks: Must contain an entry for each entry in clock-names. +- #interconnect-cells : should contain 1 +- interconnect : interconnect providers support dram bandwidth requirements. + The provider is able to communicate with the DVFSRC and send the dram + bandwidth to it. shall contain only one of the following: + "mediatek,mt8183-emi" Example: @@ -20,4 +25,8 @@ Example: reg = <0 0x10012000 0 0x1000>; clocks = <&infracfg CLK_INFRA_DVFSRC>; clock-names = "dvfsrc"; + ddr_emi: interconnect { + compatible = "mediatek,mt8183-emi"; + #interconnect-cells = <1>; + }; }; diff --git a/include/dt-bindings/interconnect/mtk,mt8183-emi.h b/include/dt-bindings/interconnect/mtk,mt8183-emi.h new file mode 100644 index 0000000..2a54856 --- /dev/null +++ b/include/dt-bindings/interconnect/mtk,mt8183-emi.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __DT_BINDINGS_INTERCONNECT_MTK_MT8183_EMI_H +#define __DT_BINDINGS_INTERCONNECT_MTK_MT8183_EMI_H + +#define MT8183_SLAVE_DDR_EMI 0 +#define MT8183_MASTER_MCUSYS 1 +#define MT8183_MASTER_GPU 2 +#define MT8183_MASTER_MMSYS 3 +#define MT8183_MASTER_MM_VPU 4 +#define MT8183_MASTER_MM_DISP 5 +#define MT8183_MASTER_MM_VDEC 6 +#define MT8183_MASTER_MM_VENC 7 +#define MT8183_MASTER_MM_CAM 8 +#define MT8183_MASTER_MM_IMG 9 +#define MT8183_MASTER_MM_MDP 10 + +#endif