diff options
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/swsusp.c | 34 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powermac/setup.c | 65 | ||||
| -rw-r--r-- | include/asm-powerpc/suspend.h | 9 |
4 files changed, 44 insertions, 65 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index e0fa80eca366..949f36a62aae 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_GENERIC_TBSYNC) += smp-tbsync.o obj-$(CONFIG_CRASH_DUMP) += crash_dump.o obj-$(CONFIG_6xx) += idle_6xx.o l2cr_6xx.o cpu_setup_6xx.o obj-$(CONFIG_TAU) += tau_6xx.o +obj-$(CONFIG_SOFTWARE_SUSPEND) += swsusp.o obj32-$(CONFIG_SOFTWARE_SUSPEND) += swsusp_32.o obj32-$(CONFIG_MODULES) += module_32.o diff --git a/arch/powerpc/kernel/swsusp.c b/arch/powerpc/kernel/swsusp.c new file mode 100644 index 000000000000..b89e4f5a0b08 --- /dev/null +++ b/arch/powerpc/kernel/swsusp.c @@ -0,0 +1,34 @@ +/* + * Common powerpc suspend code for 32 and 64 bits + * + * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> + * + * 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/sched.h> +#include <asm/suspend.h> +#include <asm/system.h> +#include <asm/current.h> +#include <asm/mmu_context.h> + +void save_processor_state(void) +{ + /* + * flush out all the special registers so we don't need + * to save them in the snapshot + */ + flush_fp_to_thread(current); + flush_altivec_to_thread(current); + flush_spe_to_thread(current); +} + +void restore_processor_state(void) +{ +#ifdef CONFIG_PPC32 + set_context(current->active_mm->context.id, current->active_mm->pgd); +#endif +} diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c index b820cabac697..5ae57e17d2ba 100644 --- a/arch/powerpc/platforms/powermac/setup.c +++ b/arch/powerpc/platforms/powermac/setup.c @@ -439,76 +439,11 @@ static void __init find_boot_device(void) #endif } -/* TODO: Merge the suspend-to-ram with the common code !!! - * currently, this is a stub implementation for suspend-to-disk - * only - */ - -#ifdef CONFIG_SOFTWARE_SUSPEND - -static int pmac_pm_prepare(suspend_state_t state) -{ - printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); - - return 0; -} - -static int pmac_pm_enter(suspend_state_t state) -{ - printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); - - /* Giveup the lazy FPU & vec so we don't have to back them - * up from the low level code - */ - enable_kernel_fp(); - -#ifdef CONFIG_ALTIVEC - if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC) - enable_kernel_altivec(); -#endif /* CONFIG_ALTIVEC */ - - return 0; -} - -static int pmac_pm_finish(suspend_state_t state) -{ - printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); - - /* Restore userland MMU context */ - set_context(current->active_mm->context.id, current->active_mm->pgd); - - return 0; -} - -static int pmac_pm_valid(suspend_state_t state) -{ - switch (state) { - case PM_SUSPEND_DISK: - return 1; - /* can't do any other states via generic mechanism yet */ - default: - return 0; - } -} - -static struct pm_ops pmac_pm_ops = { - .pm_disk_mode = PM_DISK_SHUTDOWN, - .prepare = pmac_pm_prepare, - .enter = pmac_pm_enter, - .finish = pmac_pm_finish, - .valid = pmac_pm_valid, -}; - -#endif /* CONFIG_SOFTWARE_SUSPEND */ - static int initializing = 1; static int pmac_late_init(void) { initializing = 0; -#ifdef CONFIG_SOFTWARE_SUSPEND - pm_set_ops(&pmac_pm_ops); -#endif /* CONFIG_SOFTWARE_SUSPEND */ return 0; } diff --git a/include/asm-powerpc/suspend.h b/include/asm-powerpc/suspend.h new file mode 100644 index 000000000000..cbf2c9404c37 --- /dev/null +++ b/include/asm-powerpc/suspend.h @@ -0,0 +1,9 @@ +#ifndef __ASM_POWERPC_SUSPEND_H +#define __ASM_POWERPC_SUSPEND_H + +static inline int arch_prepare_suspend(void) { return 0; } + +void save_processor_state(void); +void restore_processor_state(void); + +#endif /* __ASM_POWERPC_SUSPEND_H */ |