From: Leela Krishna Amudala <leela.krishna@linaro.org>
To: linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: daniel.lezcano@linaro.org, nicolas.pitre@linaro.org,
kgene.kim@samsung.com, amit.kucheria@linaro.org
Subject: [PATCH 1/2] ARM: EXYNOS: Add generic cpu power control functions for all exynos based SoCs
Date: Thu, 24 Apr 2014 15:01:58 +0530 [thread overview]
Message-ID: <1398331919-28321-2-git-send-email-leela.krishna@linaro.org> (raw)
In-Reply-To: <1398331919-28321-1-git-send-email-leela.krishna@linaro.org>
Add generic cpu power control functions for exynos based SoCS
for cpu power up/down and to know the cpu status.
Signed-off-by: Leela Krishna Amudala <leela.krishna@linaro.org>
---
arch/arm/mach-exynos/common.h | 3 +++
arch/arm/mach-exynos/pm.c | 36 ++++++++++++++++++++++++++++++++++++
arch/arm/mach-exynos/regs-pmu.h | 6 ++++++
3 files changed, 45 insertions(+)
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 9ef3f83..566f222 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -62,5 +62,8 @@ struct exynos_pmu_conf {
};
extern void exynos_sys_powerdown_conf(enum sys_powerdown mode);
+extern void exynos_cpu_powerdown(int cpu);
+extern void exynos_cpu_powerup(int cpu);
+extern int exynos_cpu_power_state(int cpu);
#endif /* __ARCH_ARM_MACH_EXYNOS_COMMON_H */
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 15af0ce..6651028 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -100,6 +100,42 @@ static int exynos_irq_set_wake(struct irq_data *data, unsigned int state)
return -ENOENT;
}
+/**
+ * exynos_cpu_powerdown : power down the specified cpu
+ * @cpu : the cpu to power down
+ *
+ * Power downs the specified cpu. The sequence must be finished by a
+ * call to cpu_do_idle()
+ *
+ */
+void exynos_cpu_powerdown(int cpu)
+{
+ __raw_writel(0, EXYNOS_ARM_CORE_CONFIGURATION(cpu));
+}
+
+/**
+ * exynos_cpu_powerup : power up the specified cpu
+ * @cpu : the cpu to power up
+ *
+ * Power up the specified cpu
+ */
+void exynos_cpu_powerup(int cpu)
+{
+ __raw_writel(S5P_CORE_LOCAL_PWR_EN,
+ EXYNOS_ARM_CORE_CONFIGURATION(cpu));
+}
+
+/**
+ * exynos_cpu_power_state : returns the power state of the cpu
+ * @cpu : the cpu to retrieve the power state from
+ *
+ */
+int exynos_cpu_power_state(int cpu)
+{
+ return (__raw_readl(EXYNOS_ARM_CORE_STATUS(cpu)) &
+ S5P_CORE_LOCAL_PWR_EN);
+}
+
/* For Cortex-A9 Diagnostic and Power control register */
static unsigned int save_arm_register[2];
diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
index 4f6a256..0bdfcbc 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h
@@ -121,6 +121,12 @@
#define S5P_CHECK_SLEEP 0x00000BAD
+#define EXYNOS_ARM_CORE0_CONFIGURATION S5P_PMUREG(0x2000)
+#define EXYNOS_ARM_CORE_CONFIGURATION(_nr) \
+ (EXYNOS_ARM_CORE0_CONFIGURATION + (0x80 * (_nr)))
+#define EXYNOS_ARM_CORE_STATUS(_nr) \
+ (EXYNOS_ARM_CORE_CONFIGURATION(_nr) + 0x4)
+
/* Only for EXYNOS4210 */
#define S5P_CMU_CLKSTOP_LCD1_LOWPWR S5P_PMUREG(0x1154)
#define S5P_CMU_RESET_LCD1_LOWPWR S5P_PMUREG(0x1174)
--
1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: Leela Krishna Amudala <leela.krishna@linaro.org>
To: linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: nicolas.pitre@linaro.org, kgene.kim@samsung.com,
daniel.lezcano@linaro.org, amit.kucheria@linaro.org
Subject: [PATCH 1/2] ARM: EXYNOS: Add generic cpu power control functions for all exynos based SoCs
Date: Thu, 24 Apr 2014 15:01:58 +0530 [thread overview]
Message-ID: <1398331919-28321-2-git-send-email-leela.krishna@linaro.org> (raw)
In-Reply-To: <1398331919-28321-1-git-send-email-leela.krishna@linaro.org>
Add generic cpu power control functions for exynos based SoCS
for cpu power up/down and to know the cpu status.
Signed-off-by: Leela Krishna Amudala <leela.krishna@linaro.org>
---
arch/arm/mach-exynos/common.h | 3 +++
arch/arm/mach-exynos/pm.c | 36 ++++++++++++++++++++++++++++++++++++
arch/arm/mach-exynos/regs-pmu.h | 6 ++++++
3 files changed, 45 insertions(+)
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 9ef3f83..566f222 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -62,5 +62,8 @@ struct exynos_pmu_conf {
};
extern void exynos_sys_powerdown_conf(enum sys_powerdown mode);
+extern void exynos_cpu_powerdown(int cpu);
+extern void exynos_cpu_powerup(int cpu);
+extern int exynos_cpu_power_state(int cpu);
#endif /* __ARCH_ARM_MACH_EXYNOS_COMMON_H */
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 15af0ce..6651028 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -100,6 +100,42 @@ static int exynos_irq_set_wake(struct irq_data *data, unsigned int state)
return -ENOENT;
}
+/**
+ * exynos_cpu_powerdown : power down the specified cpu
+ * @cpu : the cpu to power down
+ *
+ * Power downs the specified cpu. The sequence must be finished by a
+ * call to cpu_do_idle()
+ *
+ */
+void exynos_cpu_powerdown(int cpu)
+{
+ __raw_writel(0, EXYNOS_ARM_CORE_CONFIGURATION(cpu));
+}
+
+/**
+ * exynos_cpu_powerup : power up the specified cpu
+ * @cpu : the cpu to power up
+ *
+ * Power up the specified cpu
+ */
+void exynos_cpu_powerup(int cpu)
+{
+ __raw_writel(S5P_CORE_LOCAL_PWR_EN,
+ EXYNOS_ARM_CORE_CONFIGURATION(cpu));
+}
+
+/**
+ * exynos_cpu_power_state : returns the power state of the cpu
+ * @cpu : the cpu to retrieve the power state from
+ *
+ */
+int exynos_cpu_power_state(int cpu)
+{
+ return (__raw_readl(EXYNOS_ARM_CORE_STATUS(cpu)) &
+ S5P_CORE_LOCAL_PWR_EN);
+}
+
/* For Cortex-A9 Diagnostic and Power control register */
static unsigned int save_arm_register[2];
diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
index 4f6a256..0bdfcbc 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h
@@ -121,6 +121,12 @@
#define S5P_CHECK_SLEEP 0x00000BAD
+#define EXYNOS_ARM_CORE0_CONFIGURATION S5P_PMUREG(0x2000)
+#define EXYNOS_ARM_CORE_CONFIGURATION(_nr) \
+ (EXYNOS_ARM_CORE0_CONFIGURATION + (0x80 * (_nr)))
+#define EXYNOS_ARM_CORE_STATUS(_nr) \
+ (EXYNOS_ARM_CORE_CONFIGURATION(_nr) + 0x4)
+
/* Only for EXYNOS4210 */
#define S5P_CMU_CLKSTOP_LCD1_LOWPWR S5P_PMUREG(0x1154)
#define S5P_CMU_RESET_LCD1_LOWPWR S5P_PMUREG(0x1174)
--
1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: leela.krishna@linaro.org (Leela Krishna Amudala)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] ARM: EXYNOS: Add generic cpu power control functions for all exynos based SoCs
Date: Thu, 24 Apr 2014 15:01:58 +0530 [thread overview]
Message-ID: <1398331919-28321-2-git-send-email-leela.krishna@linaro.org> (raw)
In-Reply-To: <1398331919-28321-1-git-send-email-leela.krishna@linaro.org>
Add generic cpu power control functions for exynos based SoCS
for cpu power up/down and to know the cpu status.
Signed-off-by: Leela Krishna Amudala <leela.krishna@linaro.org>
---
arch/arm/mach-exynos/common.h | 3 +++
arch/arm/mach-exynos/pm.c | 36 ++++++++++++++++++++++++++++++++++++
arch/arm/mach-exynos/regs-pmu.h | 6 ++++++
3 files changed, 45 insertions(+)
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 9ef3f83..566f222 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -62,5 +62,8 @@ struct exynos_pmu_conf {
};
extern void exynos_sys_powerdown_conf(enum sys_powerdown mode);
+extern void exynos_cpu_powerdown(int cpu);
+extern void exynos_cpu_powerup(int cpu);
+extern int exynos_cpu_power_state(int cpu);
#endif /* __ARCH_ARM_MACH_EXYNOS_COMMON_H */
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 15af0ce..6651028 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -100,6 +100,42 @@ static int exynos_irq_set_wake(struct irq_data *data, unsigned int state)
return -ENOENT;
}
+/**
+ * exynos_cpu_powerdown : power down the specified cpu
+ * @cpu : the cpu to power down
+ *
+ * Power downs the specified cpu. The sequence must be finished by a
+ * call to cpu_do_idle()
+ *
+ */
+void exynos_cpu_powerdown(int cpu)
+{
+ __raw_writel(0, EXYNOS_ARM_CORE_CONFIGURATION(cpu));
+}
+
+/**
+ * exynos_cpu_powerup : power up the specified cpu
+ * @cpu : the cpu to power up
+ *
+ * Power up the specified cpu
+ */
+void exynos_cpu_powerup(int cpu)
+{
+ __raw_writel(S5P_CORE_LOCAL_PWR_EN,
+ EXYNOS_ARM_CORE_CONFIGURATION(cpu));
+}
+
+/**
+ * exynos_cpu_power_state : returns the power state of the cpu
+ * @cpu : the cpu to retrieve the power state from
+ *
+ */
+int exynos_cpu_power_state(int cpu)
+{
+ return (__raw_readl(EXYNOS_ARM_CORE_STATUS(cpu)) &
+ S5P_CORE_LOCAL_PWR_EN);
+}
+
/* For Cortex-A9 Diagnostic and Power control register */
static unsigned int save_arm_register[2];
diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
index 4f6a256..0bdfcbc 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h
@@ -121,6 +121,12 @@
#define S5P_CHECK_SLEEP 0x00000BAD
+#define EXYNOS_ARM_CORE0_CONFIGURATION S5P_PMUREG(0x2000)
+#define EXYNOS_ARM_CORE_CONFIGURATION(_nr) \
+ (EXYNOS_ARM_CORE0_CONFIGURATION + (0x80 * (_nr)))
+#define EXYNOS_ARM_CORE_STATUS(_nr) \
+ (EXYNOS_ARM_CORE_CONFIGURATION(_nr) + 0x4)
+
/* Only for EXYNOS4210 */
#define S5P_CMU_CLKSTOP_LCD1_LOWPWR S5P_PMUREG(0x1154)
#define S5P_CMU_RESET_LCD1_LOWPWR S5P_PMUREG(0x1174)
--
1.7.9.5
next prev parent reply other threads:[~2014-04-24 9:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-24 9:31 [PATCH 0/2] Add generic cpu power control functions for exynos Leela Krishna Amudala
2014-04-24 9:31 ` Leela Krishna Amudala
2014-04-24 9:31 ` Leela Krishna Amudala [this message]
2014-04-24 9:31 ` [PATCH 1/2] ARM: EXYNOS: Add generic cpu power control functions for all exynos based SoCs Leela Krishna Amudala
2014-04-24 9:31 ` Leela Krishna Amudala
2014-04-24 9:31 ` [PATCH 2/2] ARM: EXYNOS: use generic exynos cpu power control functions Leela Krishna Amudala
2014-04-24 9:31 ` Leela Krishna Amudala
2014-04-24 9:54 ` [PATCH 0/2] Add generic cpu power control functions for exynos Daniel Lezcano
2014-04-24 9:54 ` Daniel Lezcano
2014-04-24 10:26 ` Leela Krishna Amudala
2014-04-24 10:26 ` Leela Krishna Amudala
2014-04-26 16:07 ` Abhilash Kesavan
2014-04-26 16:07 ` Abhilash Kesavan
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