From: Henry Chen <henryc.chen@mediatek.com>
To: Georgi Djakov <georgi.djakov@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Viresh Kumar <vireshk@kernel.org>,
Stephen Boyd <swboyd@chromium.org>,
Ryan Case <ryandcase@chromium.org>,
Mark Brown <broonie@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Nicolas Boichat <drinkcat@google.com>,
Fan Chen <fan.chen@mediatek.com>,
James Liao <jamesjj.liao@mediatek.com>,
Arvin Wang <arvin.wang@mediatek.com>,
Mike Turquette <mturquette@linaro.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>,
Henry Chen <henryc.chen@mediatek.com>
Subject: [PATCH V5 03/17] soc: mediatek: add support for the performance state
Date: Mon, 14 Sep 2020 11:04:30 +0800 [thread overview]
Message-ID: <1600052684-21198-4-git-send-email-henryc.chen@mediatek.com> (raw)
In-Reply-To: <1600052684-21198-1-git-send-email-henryc.chen@mediatek.com>
Support power domain performance state, add header file for scp event.
Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
---
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 <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
+#include <linux/pm_opp.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
#include <dt-bindings/power/mt2701-power.h>
#include <dt-bindings/power/mt2712-power.h>
@@ -22,6 +24,7 @@
#include <dt-bindings/power/mt8173-power.h>
#include <dt-bindings/power/mt8183-power.h>
#include <dt-bindings/power/mt8192-power.h>
+#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
next prev parent reply other threads:[~2020-09-14 3:05 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 3:04 [PATCH V5 00/17] Add driver for dvfsrc, support for active state of scpsys Henry Chen
2020-09-14 3:04 ` [PATCH V5 01/17] dt-bindings: soc: Add dvfsrc driver bindings Henry Chen
2020-09-22 23:14 ` Rob Herring
2020-09-14 3:04 ` [PATCH V5 02/17] dt-bindings: soc: Add opp table on scpsys bindings Henry Chen
2020-09-14 3:04 ` Henry Chen [this message]
2020-09-14 3:04 ` [PATCH V5 04/17] arm64: dts: mt8183: add performance state support of scpsys Henry Chen
2020-09-14 3:04 ` [PATCH V5 05/17] soc: mediatek: add header for mediatek SIP interface Henry Chen
2020-09-14 3:04 ` [PATCH V5 06/17] soc: mediatek: add driver for dvfsrc support Henry Chen
2020-09-14 3:04 ` [PATCH V5 07/17] arm64: dts: mt8183: add dvfsrc related nodes Henry Chen
2020-09-14 3:04 ` [PATCH V5 09/17] dt-bindings: interconnect: add MT8183 interconnect dt-bindings Henry Chen
2020-09-14 3:04 ` [PATCH V5 11/17] interconnect: mediatek: Add interconnect provider driver Henry Chen
2020-09-14 3:04 ` [PATCH V5 12/17] arm64: dts: mt8183: add dvfsrc related nodes Henry Chen
2020-09-14 3:04 ` [PATCH V5 13/17] arm64: dts: mt8192: " Henry Chen
2020-09-14 3:04 ` [PATCH V5 16/17] arm64: dts: mt8183: add dvfsrc regulator nodes Henry Chen
[not found] ` <1600052684-21198-15-git-send-email-henryc.chen@mediatek.com>
2020-09-14 12:32 ` [PATCH V5 14/17] dt-bindings: regulator: add DVFSRC regulator dt-bindings Mark Brown
[not found] ` <1600052684-21198-16-git-send-email-henryc.chen@mediatek.com>
2020-09-14 12:34 ` [PATCH V5 15/17] regulator: Regulator driver for the Mediatek DVFSRC Mark Brown
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