diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/sleep/main.c | 74 | ||||
| -rw-r--r-- | drivers/acpi/sleep/poweroff.c | 81 |
2 files changed, 105 insertions, 50 deletions
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c index 0a5d2a94131..7249ba2b7a2 100644 --- a/drivers/acpi/sleep/main.c +++ b/drivers/acpi/sleep/main.c @@ -1,6 +1,7 @@ /* * sleep.c - ACPI sleep support. * + * Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> * Copyright (c) 2004 David Shaohua Li <shaohua.li@intel.com> * Copyright (c) 2000-2003 Patrick Mochel * Copyright (c) 2003 Open Source Development Lab @@ -14,7 +15,6 @@ #include <linux/dmi.h> #include <linux/device.h> #include <linux/suspend.h> -#include <asm/io.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> #include "sleep.h" @@ -27,10 +27,11 @@ extern void do_suspend_lowlevel_s4bios(void); extern void do_suspend_lowlevel(void); static u32 acpi_suspend_states[] = { - [PM_SUSPEND_ON] = ACPI_STATE_S0, - [PM_SUSPEND_STANDBY] = ACPI_STATE_S1, - [PM_SUSPEND_MEM] = ACPI_STATE_S3, - [PM_SUSPEND_DISK] = ACPI_STATE_S4, + [PM_SUSPEND_ON] = ACPI_STATE_S0, + [PM_SUSPEND_STANDBY] = ACPI_STATE_S1, + [PM_SUSPEND_MEM] = ACPI_STATE_S3, + [PM_SUSPEND_DISK] = ACPI_STATE_S4, + [PM_SUSPEND_MAX] = ACPI_STATE_S5 }; static int init_8259A_after_S1; @@ -44,30 +45,20 @@ static int init_8259A_after_S1; * wakeup code to the waking vector. */ +extern int acpi_sleep_prepare(u32 acpi_state); +extern void acpi_power_off(void); + static int acpi_pm_prepare(suspend_state_t pm_state) { u32 acpi_state = acpi_suspend_states[pm_state]; - if (!sleep_states[acpi_state]) + if (!sleep_states[acpi_state]) { + printk("acpi_pm_prepare does not support %d \n", pm_state); return -EPERM; - - /* do we have a wakeup address for S2 and S3? */ - /* Here, we support only S4BIOS, those we set the wakeup address */ - /* S4OS is only supported for now via swsusp.. */ - if (pm_state == PM_SUSPEND_MEM || pm_state == PM_SUSPEND_DISK) { - if (!acpi_wakeup_address) - return -EFAULT; - acpi_set_firmware_waking_vector( - (acpi_physical_address) virt_to_phys( - (void *)acpi_wakeup_address)); } - ACPI_FLUSH_CPU_CACHE(); - acpi_enable_wakeup_device_prep(acpi_state); - acpi_enter_sleep_state_prep(acpi_state); - return 0; + return acpi_sleep_prepare(acpi_state); } - /** * acpi_pm_enter - Actually enter a sleep state. * @pm_state: State we're entering. @@ -92,11 +83,9 @@ static int acpi_pm_enter(suspend_state_t pm_state) return error; } - local_irq_save(flags); acpi_enable_wakeup_device(acpi_state); - switch (pm_state) - { + switch (pm_state) { case PM_SUSPEND_STANDBY: barrier(); status = acpi_enter_sleep_state(acpi_state); @@ -112,6 +101,10 @@ static int acpi_pm_enter(suspend_state_t pm_state) else do_suspend_lowlevel_s4bios(); break; + case PM_SUSPEND_MAX: + acpi_power_off(); + break; + default: return -EINVAL; } @@ -126,11 +119,9 @@ static int acpi_pm_enter(suspend_state_t pm_state) if (pm_state > PM_SUSPEND_STANDBY) acpi_restore_state_mem(); - return ACPI_SUCCESS(status) ? 0 : -EFAULT; } - /** * acpi_pm_finish - Finish up suspend sequence. * @pm_state: State we're coming out of. @@ -156,27 +147,26 @@ static int acpi_pm_finish(suspend_state_t pm_state) return 0; } - int acpi_suspend(u32 acpi_state) { suspend_state_t states[] = { - [1] = PM_SUSPEND_STANDBY, - [3] = PM_SUSPEND_MEM, - [4] = PM_SUSPEND_DISK, + [1] = PM_SUSPEND_STANDBY, + [3] = PM_SUSPEND_MEM, + [4] = PM_SUSPEND_DISK, + [5] = PM_SUSPEND_MAX }; - if (acpi_state <= 4 && states[acpi_state]) + if (acpi_state < 6 && states[acpi_state]) return pm_suspend(states[acpi_state]); return -EINVAL; } static struct pm_ops acpi_pm_ops = { - .prepare = acpi_pm_prepare, - .enter = acpi_pm_enter, - .finish = acpi_pm_finish, + .prepare = acpi_pm_prepare, + .enter = acpi_pm_enter, + .finish = acpi_pm_finish, }; - /* * Toshiba fails to preserve interrupts over S1, reinitialization * of 8259 is needed after S1 resume. @@ -190,16 +180,16 @@ static int __init init_ints_after_s1(struct dmi_system_id *d) static struct dmi_system_id __initdata acpisleep_dmi_table[] = { { - .callback = init_ints_after_s1, - .ident = "Toshiba Satellite 4030cdt", - .matches = { DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), }, - }, - { }, + .callback = init_ints_after_s1, + .ident = "Toshiba Satellite 4030cdt", + .matches = {DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),}, + }, + {}, }; static int __init acpi_sleep_init(void) { - int i = 0; + int i = 0; dmi_check_system(acpisleep_dmi_table); @@ -207,7 +197,7 @@ static int __init acpi_sleep_init(void) return 0; printk(KERN_INFO PREFIX "(supports"); - for (i=0; i < ACPI_S_STATE_COUNT; i++) { + for (i = 0; i < ACPI_S_STATE_COUNT; i++) { acpi_status status; u8 type_a, type_b; status = acpi_get_sleep_type_data(i, &type_a, &type_b); diff --git a/drivers/acpi/sleep/poweroff.c b/drivers/acpi/sleep/poweroff.c index da237754ded..1fc86e6b5ab 100644 --- a/drivers/acpi/sleep/poweroff.c +++ b/drivers/acpi/sleep/poweroff.c @@ -3,35 +3,100 @@ * * AKA S5, but it is independent of whether or not the kernel supports * any other sleep support in the system. + * + * Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> + * + * This file is released under the GPLv2. */ #include <linux/pm.h> #include <linux/init.h> #include <acpi/acpi_bus.h> #include <linux/sched.h> +#include <linux/sysdev.h> +#include <asm/io.h> #include "sleep.h" -static void -acpi_power_off (void) +int acpi_sleep_prepare(u32 acpi_state) +{ + /* Flag to do not allow second time invocation for S5 state */ + static int shutdown_prepared = 0; +#ifdef CONFIG_ACPI_SLEEP + /* do we have a wakeup address for S2 and S3? */ + /* Here, we support only S4BIOS, those we set the wakeup address */ + /* S4OS is only supported for now via swsusp.. */ + if (acpi_state == ACPI_STATE_S3 || acpi_state == ACPI_STATE_S4) { + if (!acpi_wakeup_address) { + return -EFAULT; + } + acpi_set_firmware_waking_vector((acpi_physical_address) + virt_to_phys((void *) + acpi_wakeup_address)); + + } + ACPI_FLUSH_CPU_CACHE(); + acpi_enable_wakeup_device_prep(acpi_state); +#endif + if (acpi_state == ACPI_STATE_S5) { + /* Check if we were already called */ + if (shutdown_prepared) + return 0; + acpi_wakeup_gpe_poweroff_prepare(); + shutdown_prepared = 1; + } + acpi_enter_sleep_state_prep(acpi_state); + return 0; +} + +void acpi_power_off(void) { - printk("%s called\n",__FUNCTION__); + printk("%s called\n", __FUNCTION__); + acpi_sleep_prepare(ACPI_STATE_S5); + local_irq_disable(); /* Some SMP machines only can poweroff in boot CPU */ set_cpus_allowed(current, cpumask_of_cpu(0)); - acpi_wakeup_gpe_poweroff_prepare(); - acpi_enter_sleep_state_prep(ACPI_STATE_S5); - ACPI_DISABLE_IRQS(); acpi_enter_sleep_state(ACPI_STATE_S5); } +#ifdef CONFIG_PM + +static int acpi_shutdown(struct sys_device *x) +{ + return acpi_sleep_prepare(ACPI_STATE_S5); +} + +static struct sysdev_class acpi_sysclass = { + set_kset_name("acpi"), + .shutdown = acpi_shutdown +}; + +static struct sys_device device_acpi = { + .id = 0, + .cls = &acpi_sysclass, +}; + +#endif + static int acpi_poweroff_init(void) { if (!acpi_disabled) { u8 type_a, type_b; acpi_status status; - status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b); - if (ACPI_SUCCESS(status)) + status = + acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b); + if (ACPI_SUCCESS(status)) { pm_power_off = acpi_power_off; +#ifdef CONFIG_PM + { + int error; + error = sysdev_class_register(&acpi_sysclass); + if (!error) + error = sysdev_register(&device_acpi); + return error; + } +#endif + } } return 0; } |