| Message ID | 1313526898-19920-7-git-send-email-robherring2@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Aug 16, 2011 at 03:34:58PM -0500, Rob Herring wrote: > From: Rob Herring <rob.herring@calxeda.com> > > Add the platform suspend ops for highbank. > > Signed-off-by: Rob Herring <rob.herring@calxeda.com> > --- > arch/arm/mach-highbank/Makefile | 1 + > arch/arm/mach-highbank/pm.c | 55 +++++++++++++++++++++++++++++++++++++++ > 2 files changed, 56 insertions(+), 0 deletions(-) > create mode 100644 arch/arm/mach-highbank/pm.c > > diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile > index b8d5d40..2cd4a1b 100644 > --- a/arch/arm/mach-highbank/Makefile > +++ b/arch/arm/mach-highbank/Makefile > @@ -2,3 +2,4 @@ obj-y := clock.o highbank.o system.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..36c88df > --- /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) > +{ > + writel(HB_PWR_SUSPEND, sregs_base + HB_SREG_A9_PWR_REQ); > + highbank_set_cpu_jump(0, cpu_resume); > + > + scu_power_mode(a9_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 highbank_pm_init(void) __init maybe? Regards, Shawn > +{ > + suspend_set_ops(&highbank_pm_ops); > + return 0; > +} > +module_init(highbank_pm_init); > -- > 1.7.4.1
diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile index b8d5d40..2cd4a1b 100644 --- a/arch/arm/mach-highbank/Makefile +++ b/arch/arm/mach-highbank/Makefile @@ -2,3 +2,4 @@ obj-y := clock.o highbank.o system.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..36c88df --- /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) +{ + writel(HB_PWR_SUSPEND, sregs_base + HB_SREG_A9_PWR_REQ); + highbank_set_cpu_jump(0, cpu_resume); + + scu_power_mode(a9_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 highbank_pm_init(void) +{ + suspend_set_ops(&highbank_pm_ops); + return 0; +} +module_init(highbank_pm_init);