From 376e9c5848abef8c72c09bd89f2f7ee128caa104 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Mon, 24 Jan 2011 17:05:25 +0800 Subject: [PATCH] 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 Signed-off-by: Sascha Hauer --- arch/arm/mach-mxs/Makefile | 1 + arch/arm/mach-mxs/pm.c | 43 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) create mode 100644 arch/arm/mach-mxs/pm.c diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile index df501a8340f2..6b26f02e72a2 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 000000000000..fb042da29bda --- /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 +#include +#include +#include + +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);