From: Yingjoe Chen <yingjoe.chen@mediatek.com>
To: Mark Rutland <mark.rutland@arm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>
Cc: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Russell King <linux@arm.linux.org.uk>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Jason Cooper <jason@lakedaemon.net>,
Catalin Marinas <catalin.marinas@arm.com>,
Yingjoe Chen <yingjoe.chen@mediatek.com>,
Marc Carino <marc.ceeeee@gmail.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<srv_heupstream@mediatek.com>,
Sascha Hauer <kernel@pengutronix.de>
Subject: [PATCH 2/7] clocksource: mediatek: Use GPT as sched clock source
Date: Fri, 1 May 2015 15:43:25 +0800 [thread overview]
Message-ID: <1430466210-22963-3-git-send-email-yingjoe.chen@mediatek.com> (raw)
In-Reply-To: <1430466210-22963-1-git-send-email-yingjoe.chen@mediatek.com>
When cpu is in deep idle, arch timer will stop counting. Setup GPT as
sched clock source so it can keep counting in idle.
Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
---
drivers/clocksource/mtk_timer.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/clocksource/mtk_timer.c b/drivers/clocksource/mtk_timer.c
index 85e0ab5..9a90c7b 100644
--- a/drivers/clocksource/mtk_timer.c
+++ b/drivers/clocksource/mtk_timer.c
@@ -24,6 +24,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <linux/sched_clock.h>
#include <linux/slab.h>
#define GPT_IRQ_EN_REG 0x00
@@ -59,6 +60,13 @@ struct mtk_clock_event_device {
struct clock_event_device dev;
};
+static void __iomem *gpt_base __read_mostly;
+
+static u64 notrace mtk_read_sched_clock(void)
+{
+ return readl_relaxed(gpt_base + TIMER_CNT_REG(GPT_CLK_SRC));
+}
+
static inline struct mtk_clock_event_device *to_mtk_clk(
struct clock_event_device *c)
{
@@ -239,6 +247,8 @@ static void __init mtk_timer_init(struct device_node *node)
mtk_timer_setup(evt, GPT_CLK_SRC, TIMER_CTRL_OP_FREERUN);
clocksource_mmio_init(evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC),
node->name, rate, 300, 32, clocksource_mmio_readl_up);
+ gpt_base = evt->gpt_base;
+ sched_clock_register(mtk_read_sched_clock, 32, rate);
/* Configure clock event */
mtk_timer_setup(evt, GPT_CLK_EVT, TIMER_CTRL_OP_REPEAT);
--
1.8.1.1.dirty
WARNING: multiple messages have this Message-ID (diff)
From: Yingjoe Chen <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
To: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Matthias Brugger
<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>
Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
Daniel Lezcano
<daniel.lezcano-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>,
Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>,
Yingjoe Chen
<yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
Marc Carino <marc.ceeeee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Lorenzo Pieralisi
<lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org,
Sascha Hauer <kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
Subject: [PATCH 2/7] clocksource: mediatek: Use GPT as sched clock source
Date: Fri, 1 May 2015 15:43:25 +0800 [thread overview]
Message-ID: <1430466210-22963-3-git-send-email-yingjoe.chen@mediatek.com> (raw)
In-Reply-To: <1430466210-22963-1-git-send-email-yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
When cpu is in deep idle, arch timer will stop counting. Setup GPT as
sched clock source so it can keep counting in idle.
Signed-off-by: Yingjoe Chen <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
---
drivers/clocksource/mtk_timer.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/clocksource/mtk_timer.c b/drivers/clocksource/mtk_timer.c
index 85e0ab5..9a90c7b 100644
--- a/drivers/clocksource/mtk_timer.c
+++ b/drivers/clocksource/mtk_timer.c
@@ -24,6 +24,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <linux/sched_clock.h>
#include <linux/slab.h>
#define GPT_IRQ_EN_REG 0x00
@@ -59,6 +60,13 @@ struct mtk_clock_event_device {
struct clock_event_device dev;
};
+static void __iomem *gpt_base __read_mostly;
+
+static u64 notrace mtk_read_sched_clock(void)
+{
+ return readl_relaxed(gpt_base + TIMER_CNT_REG(GPT_CLK_SRC));
+}
+
static inline struct mtk_clock_event_device *to_mtk_clk(
struct clock_event_device *c)
{
@@ -239,6 +247,8 @@ static void __init mtk_timer_init(struct device_node *node)
mtk_timer_setup(evt, GPT_CLK_SRC, TIMER_CTRL_OP_FREERUN);
clocksource_mmio_init(evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC),
node->name, rate, 300, 32, clocksource_mmio_readl_up);
+ gpt_base = evt->gpt_base;
+ sched_clock_register(mtk_read_sched_clock, 32, rate);
/* Configure clock event */
mtk_timer_setup(evt, GPT_CLK_EVT, TIMER_CTRL_OP_REPEAT);
--
1.8.1.1.dirty
--
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WARNING: multiple messages have this Message-ID (diff)
From: yingjoe.chen@mediatek.com (Yingjoe Chen)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/7] clocksource: mediatek: Use GPT as sched clock source
Date: Fri, 1 May 2015 15:43:25 +0800 [thread overview]
Message-ID: <1430466210-22963-3-git-send-email-yingjoe.chen@mediatek.com> (raw)
In-Reply-To: <1430466210-22963-1-git-send-email-yingjoe.chen@mediatek.com>
When cpu is in deep idle, arch timer will stop counting. Setup GPT as
sched clock source so it can keep counting in idle.
Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
---
drivers/clocksource/mtk_timer.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/clocksource/mtk_timer.c b/drivers/clocksource/mtk_timer.c
index 85e0ab5..9a90c7b 100644
--- a/drivers/clocksource/mtk_timer.c
+++ b/drivers/clocksource/mtk_timer.c
@@ -24,6 +24,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <linux/sched_clock.h>
#include <linux/slab.h>
#define GPT_IRQ_EN_REG 0x00
@@ -59,6 +60,13 @@ struct mtk_clock_event_device {
struct clock_event_device dev;
};
+static void __iomem *gpt_base __read_mostly;
+
+static u64 notrace mtk_read_sched_clock(void)
+{
+ return readl_relaxed(gpt_base + TIMER_CNT_REG(GPT_CLK_SRC));
+}
+
static inline struct mtk_clock_event_device *to_mtk_clk(
struct clock_event_device *c)
{
@@ -239,6 +247,8 @@ static void __init mtk_timer_init(struct device_node *node)
mtk_timer_setup(evt, GPT_CLK_SRC, TIMER_CTRL_OP_FREERUN);
clocksource_mmio_init(evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC),
node->name, rate, 300, 32, clocksource_mmio_readl_up);
+ gpt_base = evt->gpt_base;
+ sched_clock_register(mtk_read_sched_clock, 32, rate);
/* Configure clock event */
mtk_timer_setup(evt, GPT_CLK_EVT, TIMER_CTRL_OP_REPEAT);
--
1.8.1.1.dirty
next prev parent reply other threads:[~2015-05-01 7:44 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-01 7:43 [PATCH 0/7] Add SMP bringup support for mt65xx socs Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` [PATCH 1/7] clocksource: mediatek: Don't run event_handler if it is NULL Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-04 8:14 ` Daniel Lezcano
2015-05-04 8:14 ` Daniel Lezcano
2015-05-04 8:14 ` Daniel Lezcano
2015-05-04 8:34 ` Matthias Brugger
2015-05-04 8:34 ` Matthias Brugger
2015-05-04 8:34 ` Matthias Brugger
2015-05-04 8:44 ` Daniel Lezcano
2015-05-04 8:44 ` Daniel Lezcano
2015-05-04 8:44 ` Daniel Lezcano
2015-05-04 15:13 ` Yingjoe Chen
2015-05-04 15:13 ` Yingjoe Chen
2015-05-04 15:13 ` Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen [this message]
2015-05-01 7:43 ` [PATCH 2/7] clocksource: mediatek: Use GPT as sched clock source Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` [PATCH 3/7] arm: mediatek: enable gpt6 on boot up to make arch timer working Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` [PATCH 4/7] devicetree: bindings: add new SMP enable method Mediatek SoC Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` [PATCH 5/7] ARM: mediatek: add smp bringup code Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-06 8:38 ` Matthias Brugger
2015-05-06 8:38 ` Matthias Brugger
2015-05-06 8:38 ` Matthias Brugger
2015-05-01 7:43 ` [PATCH 6/7] ARM: dts: mt8135: enable basic SMP bringup for mt8135 Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-04 7:08 ` Matthias Brugger
2015-05-04 7:08 ` Matthias Brugger
2015-05-04 7:08 ` Matthias Brugger
2015-05-04 14:31 ` Sascha Hauer
2015-05-04 14:31 ` Sascha Hauer
2015-05-05 5:37 ` Yingjoe Chen
2015-05-05 5:37 ` Yingjoe Chen
2015-05-05 5:37 ` Yingjoe Chen
2015-05-01 7:43 ` [PATCH 7/7] ARM: dts: mt8127: enable basic SMP bringup for mt8127 Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-01 7:43 ` Yingjoe Chen
2015-05-04 7:48 ` [PATCH 0/7] Add SMP bringup support for mt65xx socs Matthias Brugger
2015-05-04 7:48 ` Matthias Brugger
2015-05-04 7:48 ` Matthias Brugger
2015-05-06 7:19 ` Yingjoe Chen
2015-05-06 7:19 ` Yingjoe Chen
2015-05-06 7:19 ` Yingjoe Chen
2015-05-06 7:59 ` Yingjoe Chen
2015-05-06 7:59 ` Yingjoe Chen
2015-05-06 7:59 ` Yingjoe Chen
2015-05-06 8:29 ` Matthias Brugger
2015-05-06 8:29 ` Matthias Brugger
2015-05-06 8:29 ` Matthias Brugger
2015-05-06 11:04 ` Matthias Brugger
2015-05-06 11:04 ` Matthias Brugger
2015-05-06 11:04 ` Matthias Brugger
2015-05-16 8:09 ` Yingjoe Chen
2015-05-16 8:09 ` Yingjoe Chen
2015-05-16 8:09 ` Yingjoe Chen
2015-05-16 9:11 ` Matthias Brugger
2015-05-16 9:11 ` Matthias Brugger
2015-05-16 9:11 ` Matthias Brugger
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