From: Abhilash Kesavan <a.kesavan@samsung.com>
To: nicolas.pitre@linaro.org, Dave.Martin@arm.com,
lorenzo.pieralisi@arm.com, daniel.lezcano@linaro.org,
linux-arm-kernel@lists.infradead.org, kgene.kim@samsung.com,
t.figa@samsung.com, abrestic@chromium.org, thomas.ab@samsung.com,
inderpal.s@samsung.com
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
grant.likely@linaro.org, robh+dt@kernel.org, will.deacon@arm.com,
arnd@arndb.de, kesavan.abhilash@gmail.com,
linux-samsung-soc@vger.kernel.org
Subject: [PATCH v5 3/5] arm: exynos: Add generic cluster power control functions
Date: Mon, 5 May 2014 21:56:59 +0530 [thread overview]
Message-ID: <1399307221-8659-4-git-send-email-a.kesavan@samsung.com> (raw)
In-Reply-To: <1399307221-8659-1-git-send-email-a.kesavan@samsung.com>
Add generic cluster power control functions for exynos based SoCS
for cluster power up/down and to know the cluster status.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
---
arch/arm/mach-exynos/common.h | 3 +++
arch/arm/mach-exynos/pm.c | 30 ++++++++++++++++++++++++++++++
arch/arm/mach-exynos/regs-pmu.h | 6 ++++++
3 files changed, 39 insertions(+)
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index a7dbb5f..03b8bb2 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -66,5 +66,8 @@ 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);
+extern void exynos_cluster_powerdown(int cluster);
+extern void exynos_cluster_powerup(int cluster);
+extern int exynos_cluster_power_state(int cluster);
#endif /* __ARCH_ARM_MACH_EXYNOS_COMMON_H */
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 6651028..f02d864 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -136,6 +136,36 @@ int exynos_cpu_power_state(int cpu)
S5P_CORE_LOCAL_PWR_EN);
}
+/**
+ * exynos_common_powerdown : power down the specified cluster
+ * @cluster : the cluster to power down
+ */
+void exynos_cluster_powerdown(int cluster)
+{
+ __raw_writel(0, EXYNOS_COMMON_CONFIGURATION(cluster));
+}
+
+/**
+ * exynos_cluster_powerup : power up the specified cluster
+ * @cluster : the cluster to power up
+ */
+void exynos_cluster_powerup(int cluster)
+{
+ __raw_writel(S5P_CORE_LOCAL_PWR_EN,
+ EXYNOS_COMMON_CONFIGURATION(cluster));
+}
+
+/**
+ * exynos_cluster_power_state : returns the power state of the cluster
+ * @cluster : the cluster to retrieve the power state from
+ *
+ */
+int exynos_cluster_power_state(int cluster)
+{
+ return (__raw_readl(EXYNOS_COMMON_STATUS(cluster)) &
+ 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 0bdfcbc..6685ebf 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h
@@ -127,6 +127,12 @@
#define EXYNOS_ARM_CORE_STATUS(_nr) \
(EXYNOS_ARM_CORE_CONFIGURATION(_nr) + 0x4)
+#define EXYNOS_ARM_COMMON_CONFIGURATION S5P_PMUREG(0x2500)
+#define EXYNOS_COMMON_CONFIGURATION(_nr) \
+ (EXYNOS_ARM_COMMON_CONFIGURATION + (0x80 * (_nr)))
+#define EXYNOS_COMMON_STATUS(_nr) \
+ (EXYNOS_COMMON_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:[~2014-05-05 16:27 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-05 16:26 [PATCH v5 0/5] MCPM backend for Exynos5420 Abhilash Kesavan
[not found] ` <1399307221-8659-1-git-send-email-a.kesavan-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2014-05-05 16:26 ` [PATCH v5 1/5] ARM: EXYNOS: Add generic cpu power control functions for all exynos based SoCs Abhilash Kesavan
2014-05-13 2:24 ` Kukjin Kim
2014-05-13 10:12 ` Abhilash Kesavan
2014-05-15 21:11 ` Tomasz Figa
2014-05-16 5:07 ` Abhilash Kesavan
2014-05-17 0:32 ` Tomasz Figa
2014-05-19 2:42 ` Abhilash Kesavan
2014-05-05 16:26 ` [PATCH v5 2/5] ARM: EXYNOS: use generic exynos cpu power control functions Abhilash Kesavan
2014-05-13 2:28 ` Kukjin Kim
2014-05-13 10:13 ` Abhilash Kesavan
2014-05-05 16:27 ` [PATCH v5 4/5] ARM: dts: exynos5420: add CCI node Abhilash Kesavan
2014-05-05 16:26 ` Abhilash Kesavan [this message]
2014-05-05 16:27 ` [PATCH v5 5/5] arm: exynos: Add MCPM call-back functions Abhilash Kesavan
2014-05-05 18:12 ` Nicolas Pitre
2014-05-27 11:07 ` Arnd Bergmann
2014-05-27 11:39 ` Kukjin Kim
2014-05-27 15:17 ` Kukjin Kim
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