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author | Rob Herring <rob.herring@calxeda.com> | 2011-05-15 17:44:17 (GMT) |
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committer | Arnd Bergmann <arnd@arndb.de> | 2011-10-31 13:14:05 (GMT) |
commit | 8b61f37440388ebbd2a894178fe098f2e70ab392 (patch) | |
tree | 15d6b6941337c1d220b19459a3887809165a0812 /arch/arm | |
parent | 9680b3d04d27ed90479eb84d2054ddd3deb83d5e (diff) | |
download | linux-fsl-qoriq-8b61f37440388ebbd2a894178fe098f2e70ab392.tar.xz |
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')
-rw-r--r-- | arch/arm/mach-highbank/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/mach-highbank/pm.c | 55 |
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); |