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>
Cc: James Liao <jamesjj.liao@mediatek•com>,
Weiyi Lu <weiyi.lu@mediatek•com>,
Nicolas Boichat <drinkcat@google•com>,
linux-kernel@vger•kernel.org,
Henry Chen <henryc.chen@mediatek•com>,
Fan Chen <fan.chen@mediatek•com>,
devicetree@vger•kernel.org, linux-mediatek@lists•infradead.org,
linux-arm-kernel@lists•infradead.org
Subject: [PATCH V3 03/10] soc: mediatek: add support for the performance state
Date: Wed, 28 Aug 2019 20:28:41 +0800 [thread overview]
Message-ID: <1566995328-15158-4-git-send-email-henryc.chen@mediatek.com> (raw)
In-Reply-To: <1566995328-15158-1-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 e072810..50bc254 100644
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -10,7 +10,9 @@
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
+#include <linux/pm_opp.h>
#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
#include <linux/soc/mediatek/infracfg.h>
#include <linux/soc/mediatek/scpsys-ext.h>
@@ -21,6 +23,7 @@
#include <dt-bindings/power/mt7623a-power.h>
#include <dt-bindings/power/mt8173-power.h>
#include <dt-bindings/power/mt8183-power.h>
+#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__ */
--
1.9.1
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next prev parent reply other threads:[~2019-08-28 12:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-28 12:28 [PATCH V3 00/10] Add driver for dvfsrc, support for active state of scpsys Henry Chen
2019-08-28 12:28 ` [PATCH V3 01/10] dt-bindings: soc: Add dvfsrc driver bindings Henry Chen
2019-08-29 19:16 ` Rob Herring
2019-08-30 5:26 ` Henry Chen
2019-08-28 12:28 ` [PATCH V3 02/10] dt-bindings: soc: Add opp table on scpsys bindings Henry Chen
2019-08-29 19:16 ` Rob Herring
2019-08-28 12:28 ` Henry Chen [this message]
2019-08-28 12:28 ` [PATCH V3 04/10] arm64: dts: mt8183: add performance state support of scpsys Henry Chen
2019-08-28 12:28 ` [PATCH V3 05/10] soc: mediatek: add header for mediatek SIP interface Henry Chen
2019-08-28 12:28 ` [PATCH V3 06/10] soc: mediatek: add MT8183 dvfsrc support Henry Chen
2019-08-28 12:28 ` [PATCH V3 07/10] arm64: dts: mt8183: add dvfsrc related nodes Henry Chen
2019-08-28 12:28 ` [PATCH V3 08/10] dt-bindings: interconnect: add MT8183 interconnect dt-bindings Henry Chen
2019-09-02 13:38 ` Rob Herring
2019-09-03 12:36 ` Henry Chen
2019-08-28 12:28 ` [PATCH V3 09/10] interconnect: mediatek: Add mt8183 interconnect provider driver Henry Chen
2019-09-24 23:53 ` Georgi Djakov
2019-08-28 12:28 ` [PATCH V3 10/10] arm64: dts: mt8183: Add interconnect provider DT nodes Henry Chen
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