diff options
author | Shawn Guo <shawn.guo@freescale.com> | 2011-01-24 17:05:25 +0800 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-01-26 08:30:49 +0100 |
commit | 376e9c5848abef8c72c09bd89f2f7ee128caa104 (patch) | |
tree | 798edecd5154f2eadbeddd798f49b379ab108c90 /arch/arm/mach-mxs | |
parent | cf3567aaad0304410e465a55313c8f0d25ef306d (diff) | |
download | op-kernel-dev-376e9c5848abef8c72c09bd89f2f7ee128caa104.zip op-kernel-dev-376e9c5848abef8c72c09bd89f2f7ee128caa104.tar.gz |
ARM: mxs: add initial pm support
This is a very initial pm support and basically does nothing.
With this pm support entry, drivers can start testing their own
pm functions.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mxs')
-rw-r--r-- | arch/arm/mach-mxs/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/mach-mxs/pm.c | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile index df501a8..6b26f02 100644 --- a/arch/arm/mach-mxs/Makefile +++ b/arch/arm/mach-mxs/Makefile @@ -2,6 +2,7 @@ obj-y := clock.o devices.o gpio.o icoll.o iomux.o system.o timer.o obj-$(CONFIG_MXS_OCOTP) += ocotp.o +obj-$(CONFIG_PM) += pm.o obj-$(CONFIG_SOC_IMX23) += clock-mx23.o mm-mx23.o obj-$(CONFIG_SOC_IMX28) += clock-mx28.o mm-mx28.o diff --git a/arch/arm/mach-mxs/pm.c b/arch/arm/mach-mxs/pm.c new file mode 100644 index 0000000..fb042da --- /dev/null +++ b/arch/arm/mach-mxs/pm.c @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that 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. + */ + +#include <linux/kernel.h> +#include <linux/suspend.h> +#include <linux/io.h> +#include <mach/system.h> + +static int mxs_suspend_enter(suspend_state_t state) +{ + switch (state) { + case PM_SUSPEND_MEM: + arch_idle(); + break; + + default: + return -EINVAL; + } + return 0; +} + +static struct platform_suspend_ops mxs_suspend_ops = { + .enter = mxs_suspend_enter, + .valid = suspend_valid_only_mem, +}; + +static int __init mxs_pm_init(void) +{ + suspend_set_ops(&mxs_suspend_ops); + return 0; +} +device_initcall(mxs_pm_init); |