From 9852910a0b0aa5548f990b51ad335921e0a710bf Mon Sep 17 00:00:00 2001
From: Rob Herring <rob.herring@calxeda.com>
Date: Sun, 30 Dec 2012 10:15:06 -0600
Subject: [PATCH] ARM: highbank: add a power request clear
When we fail to power down, we need to clear out the power request.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
---
arch/arm/mach-highbank/sysregs.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/arm/mach-highbank/sysregs.h b/arch/arm/mach-highbank/sysregs.h
index 707cfd3d80ecb..70af9d13fcefe 100644
--- a/arch/arm/mach-highbank/sysregs.h
+++ b/arch/arm/mach-highbank/sysregs.h
@@ -44,6 +44,15 @@ static inline void highbank_set_core_pwr(void)
writel_relaxed(1, sregs_base + SREG_CPU_PWR_CTRL(cpu));
}
+static inline void highbank_clear_core_pwr(void)
+{
+ int cpu = cpu_logical_map(smp_processor_id());
+ if (scu_base_addr)
+ scu_power_mode(scu_base_addr, SCU_PM_NORMAL);
+ else
+ writel_relaxed(0, sregs_base + SREG_CPU_PWR_CTRL(cpu));
+}
+
static inline void highbank_set_pwr_suspend(void)
{
writel(HB_PWR_SUSPEND, sregs_base + HB_SREG_A9_PWR_REQ);
@@ -68,4 +77,10 @@ static inline void highbank_set_pwr_hard_reset(void)
highbank_set_core_pwr();
}
+static inline void highbank_clear_pwr_request(void)
+{
+ writel(~0UL, sregs_base + HB_SREG_A9_PWR_REQ);
+ highbank_clear_core_pwr();
+}
+
#endif
--
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