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authorRob Herring <rob.herring@calxeda.com>2011-05-15 12:44:17 -0500
committerArnd Bergmann <arnd@arndb.de>2011-10-31 14:14:05 +0100
commit8b61f37440388ebbd2a894178fe098f2e70ab392 (patch)
tree15d6b6941337c1d220b19459a3887809165a0812 /arch/arm/mach-highbank
parent9680b3d04d27ed90479eb84d2054ddd3deb83d5e (diff)
downloadop-kernel-dev-8b61f37440388ebbd2a894178fe098f2e70ab392.zip
op-kernel-dev-8b61f37440388ebbd2a894178fe098f2e70ab392.tar.gz
ARM: highbank: add suspend support
Add the platform suspend ops for highbank. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-highbank')
-rw-r--r--arch/arm/mach-highbank/Makefile1
-rw-r--r--arch/arm/mach-highbank/pm.c55
2 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile
index c45078f..986958a 100644
--- a/arch/arm/mach-highbank/Makefile
+++ b/arch/arm/mach-highbank/Makefile
@@ -3,3 +3,4 @@ obj-$(CONFIG_DEBUG_HIGHBANK_UART) += lluart.o
obj-$(CONFIG_SMP) += platsmp.o
obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
+obj-$(CONFIG_PM_SLEEP) += pm.o
diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c
new file mode 100644
index 0000000..33b3beb
--- /dev/null
+++ b/arch/arm/mach-highbank/pm.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/suspend.h>
+
+#include <asm/proc-fns.h>
+#include <asm/smp_scu.h>
+#include <asm/suspend.h>
+
+#include "core.h"
+#include "sysregs.h"
+
+static int highbank_suspend_finish(unsigned long val)
+{
+ cpu_do_idle();
+ return 0;
+}
+
+static int highbank_pm_enter(suspend_state_t state)
+{
+ hignbank_set_pwr_suspend();
+ highbank_set_cpu_jump(0, cpu_resume);
+
+ scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
+ cpu_suspend(0, highbank_suspend_finish);
+
+ return 0;
+}
+
+static const struct platform_suspend_ops highbank_pm_ops = {
+ .enter = highbank_pm_enter,
+ .valid = suspend_valid_only_mem,
+};
+
+static int __init highbank_pm_init(void)
+{
+ suspend_set_ops(&highbank_pm_ops);
+ return 0;
+}
+module_init(highbank_pm_init);
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