diff options
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/85xx/Kconfig | 5 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/qoriq_pm.c | 77 | ||||
| -rw-r--r-- | arch/powerpc/platforms/86xx/Kconfig | 1 |
4 files changed, 84 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index 4c6e1db..2992c35 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -9,6 +9,8 @@ menuconfig FSL_SOC_BOOKE select SERIAL_8250_EXTENDED if SERIAL_8250 select SERIAL_8250_SHARE_IRQ if SERIAL_8250 select FSL_CORENET_RCPM if PPC_E500MC + select FSL_QORIQ_PM if SUSPEND && PPC_E500MC + select FSL_PMC if SUSPEND && !PPC_E500MC default y if FSL_SOC_BOOKE @@ -290,3 +292,6 @@ endif # FSL_SOC_BOOKE config TQM85xx bool + +config FSL_QORIQ_PM + bool diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile index e5ac20b..a82106d16 100644 --- a/arch/powerpc/platforms/85xx/Makefile +++ b/arch/powerpc/platforms/85xx/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_SMP) += smp.o ifneq ($(CONFIG_PPC_E500MC),y) obj-$(CONFIG_SUSPEND) += sleep.o endif +obj-$(FSL_QORIQ_PM) += qoriq_pm.o obj-y += common.o diff --git a/arch/powerpc/platforms/85xx/qoriq_pm.c b/arch/powerpc/platforms/85xx/qoriq_pm.c new file mode 100644 index 0000000..65c298b --- /dev/null +++ b/arch/powerpc/platforms/85xx/qoriq_pm.c @@ -0,0 +1,77 @@ +/* + * Support Power Management feature + * + * Copyright 2014 Freescale Semiconductor Inc. + * + * Author: Chenhui Zhao <chenhui.zhao@freescale.com> + * + * 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. + */ + +#include <linux/kernel.h> +#include <linux/suspend.h> +#include <linux/of_platform.h> + +#include <asm/fsl_pm.h> + +#define FSL_SLEEP 0x1 + +/* specify the sleep state of the present platform */ +unsigned int sleep_pm_state; +/* supported sleep modes by the present platform */ +static unsigned int sleep_modes; + +static int qoriq_suspend_enter(suspend_state_t state) +{ + int ret = 0; + + switch (state) { + case PM_SUSPEND_STANDBY: + + if (cur_cpu_spec->cpu_flush_caches) + cur_cpu_spec->cpu_flush_caches(); + + ret = qoriq_pm_ops->plat_enter_state(sleep_pm_state); + + break; + + default: + ret = -EINVAL; + + } + + return ret; +} + +static int qoriq_suspend_valid(suspend_state_t state) +{ + if (state == PM_SUSPEND_STANDBY && (sleep_modes & FSL_SLEEP)) + return 1; + + return 0; +} + +static const struct platform_suspend_ops qoriq_suspend_ops = { + .valid = qoriq_suspend_valid, + .enter = qoriq_suspend_enter, +}; + +static int __init qoriq_suspend_init(void) +{ + struct device_node *np; + + sleep_modes = FSL_SLEEP; + sleep_pm_state = PLAT_PM_SLEEP; + + np = of_find_compatible_node(NULL, NULL, "fsl,qoriq-rcpm-2.0"); + if (np) + sleep_pm_state = PLAT_PM_LPM20; + + suspend_set_ops(&qoriq_suspend_ops); + + return 0; +} +arch_initcall(qoriq_suspend_init); diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig index 1afd1e4..09638e0 100644 --- a/arch/powerpc/platforms/86xx/Kconfig +++ b/arch/powerpc/platforms/86xx/Kconfig @@ -5,6 +5,7 @@ menuconfig PPC_86xx select FSL_SOC select ALTIVEC select ARCH_WANT_OPTIONAL_GPIOLIB + select FSL_PMC if SUSPEND help The Freescale E600 SoCs have 74xx cores. |