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path: root/drivers/acpi/sleep
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Diffstat (limited to 'drivers/acpi/sleep')
-rw-r--r--drivers/acpi/sleep/main.c80
-rw-r--r--drivers/acpi/sleep/proc.c37
2 files changed, 95 insertions, 22 deletions
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 37a0930fc0a6..52b23471dd69 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -29,7 +29,6 @@ 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_MAX] = ACPI_STATE_S5
};
@@ -94,14 +93,6 @@ static int acpi_pm_enter(suspend_state_t pm_state)
do_suspend_lowlevel();
break;
- case PM_SUSPEND_DISK:
- if (acpi_pm_ops.pm_disk_mode == PM_DISK_PLATFORM)
- status = acpi_enter_sleep_state(acpi_state);
- break;
- case PM_SUSPEND_MAX:
- acpi_power_off();
- break;
-
default:
return -EINVAL;
}
@@ -157,20 +148,30 @@ int acpi_suspend(u32 acpi_state)
suspend_state_t states[] = {
[1] = PM_SUSPEND_STANDBY,
[3] = PM_SUSPEND_MEM,
- [4] = PM_SUSPEND_DISK,
[5] = PM_SUSPEND_MAX
};
if (acpi_state < 6 && states[acpi_state])
return pm_suspend(states[acpi_state]);
+ if (acpi_state == 4)
+ return hibernate();
return -EINVAL;
}
static int acpi_pm_state_valid(suspend_state_t pm_state)
{
- u32 acpi_state = acpi_suspend_states[pm_state];
+ u32 acpi_state;
- return sleep_states[acpi_state];
+ switch (pm_state) {
+ case PM_SUSPEND_ON:
+ case PM_SUSPEND_STANDBY:
+ case PM_SUSPEND_MEM:
+ acpi_state = acpi_suspend_states[pm_state];
+
+ return sleep_states[acpi_state];
+ default:
+ return 0;
+ }
}
static struct pm_ops acpi_pm_ops = {
@@ -180,6 +181,49 @@ static struct pm_ops acpi_pm_ops = {
.finish = acpi_pm_finish,
};
+#ifdef CONFIG_SOFTWARE_SUSPEND
+static int acpi_hibernation_prepare(void)
+{
+ return acpi_sleep_prepare(ACPI_STATE_S4);
+}
+
+static int acpi_hibernation_enter(void)
+{
+ acpi_status status = AE_OK;
+ unsigned long flags = 0;
+
+ ACPI_FLUSH_CPU_CACHE();
+
+ local_irq_save(flags);
+ acpi_enable_wakeup_device(ACPI_STATE_S4);
+ /* This shouldn't return. If it returns, we have a problem */
+ status = acpi_enter_sleep_state(ACPI_STATE_S4);
+ local_irq_restore(flags);
+
+ return ACPI_SUCCESS(status) ? 0 : -EFAULT;
+}
+
+static void acpi_hibernation_finish(void)
+{
+ acpi_leave_sleep_state(ACPI_STATE_S4);
+ acpi_disable_wakeup_device(ACPI_STATE_S4);
+
+ /* reset firmware waking vector */
+ acpi_set_firmware_waking_vector((acpi_physical_address) 0);
+
+ if (init_8259A_after_S1) {
+ printk("Broken toshiba laptop -> kicking interrupts\n");
+ init_8259A(0);
+ }
+}
+
+static struct hibernation_ops acpi_hibernation_ops = {
+ .prepare = acpi_hibernation_prepare,
+ .enter = acpi_hibernation_enter,
+ .finish = acpi_hibernation_finish,
+};
+#endif /* CONFIG_SOFTWARE_SUSPEND */
+
/*
* Toshiba fails to preserve interrupts over S1, reinitialization
* of 8259 is needed after S1 resume.
@@ -218,14 +262,18 @@ int __init acpi_sleep_init(void)
sleep_states[i] = 1;
printk(" S%d", i);
}
- if (i == ACPI_STATE_S4) {
- if (sleep_states[i])
- acpi_pm_ops.pm_disk_mode = PM_DISK_PLATFORM;
- }
}
printk(")\n");
pm_set_ops(&acpi_pm_ops);
+
+#ifdef CONFIG_SOFTWARE_SUSPEND
+ if (sleep_states[ACPI_STATE_S4])
+ hibernation_set_ops(&acpi_hibernation_ops);
+#else
+ sleep_states[ACPI_STATE_S4] = 0;
+#endif
+
return 0;
}
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index ccc11b33d89c..76b45f0b8341 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -60,7 +60,7 @@ acpi_system_write_sleep(struct file *file,
state = simple_strtoul(str, NULL, 0);
#ifdef CONFIG_SOFTWARE_SUSPEND
if (state == 4) {
- error = software_suspend();
+ error = hibernate();
goto Done;
}
#endif
@@ -70,6 +70,14 @@ acpi_system_write_sleep(struct file *file,
}
#endif /* CONFIG_ACPI_SLEEP_PROC_SLEEP */
+#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE)
+/* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */
+#else
+#define HAVE_ACPI_LEGACY_ALARM
+#endif
+
+#ifdef HAVE_ACPI_LEGACY_ALARM
+
static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
{
u32 sec, min, hr;
@@ -341,6 +349,8 @@ acpi_system_write_alarm(struct file *file,
end:
return_VALUE(result ? result : count);
}
+#endif /* HAVE_ACPI_LEGACY_ALARM */
+
extern struct list_head acpi_wakeup_device_list;
extern spinlock_t acpi_device_lock;
@@ -350,21 +360,31 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
{
struct list_head *node, *next;
- seq_printf(seq, "Device Sleep state Status\n");
+ seq_printf(seq, "Device\tS-state\t Status Sysfs node\n");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
struct acpi_device *dev =
container_of(node, struct acpi_device, wakeup_list);
+ struct device *ldev;
if (!dev->wakeup.flags.valid)
continue;
spin_unlock(&acpi_device_lock);
- seq_printf(seq, "%4s %4d %s%8s\n",
+
+ ldev = acpi_get_physical_device(dev->handle);
+ seq_printf(seq, "%s\t S%d\t%c%-8s ",
dev->pnp.bus_id,
(u32) dev->wakeup.sleep_state,
- dev->wakeup.flags.run_wake ? "*" : "",
+ dev->wakeup.flags.run_wake ? '*' : ' ',
dev->wakeup.state.enabled ? "enabled" : "disabled");
+ if (ldev)
+ seq_printf(seq, "%s:%s",
+ ldev->bus ? ldev->bus->name : "no-bus",
+ ldev->bus_id);
+ seq_printf(seq, "\n");
+ put_device(ldev);
+
spin_lock(&acpi_device_lock);
}
spin_unlock(&acpi_device_lock);
@@ -454,6 +474,7 @@ static const struct file_operations acpi_system_sleep_fops = {
};
#endif /* CONFIG_ACPI_SLEEP_PROC_SLEEP */
+#ifdef HAVE_ACPI_LEGACY_ALARM
static const struct file_operations acpi_system_alarm_fops = {
.open = acpi_system_alarm_open_fs,
.read = seq_read,
@@ -469,8 +490,9 @@ static u32 rtc_handler(void *context)
return ACPI_INTERRUPT_HANDLED;
}
+#endif /* HAVE_ACPI_LEGACY_ALARM */
-static int acpi_sleep_proc_init(void)
+static int __init acpi_sleep_proc_init(void)
{
struct proc_dir_entry *entry = NULL;
@@ -486,6 +508,7 @@ static int acpi_sleep_proc_init(void)
entry->proc_fops = &acpi_system_sleep_fops;
#endif
+#ifdef HAVE_ACPI_LEGACY_ALARM
/* 'alarm' [R/W] */
entry =
create_proc_entry("alarm", S_IFREG | S_IRUGO | S_IWUSR,
@@ -493,6 +516,9 @@ static int acpi_sleep_proc_init(void)
if (entry)
entry->proc_fops = &acpi_system_alarm_fops;
+ acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
+#endif /* HAVE_ACPI_LEGACY_ALARM */
+
/* 'wakeup device' [R/W] */
entry =
create_proc_entry("wakeup", S_IFREG | S_IRUGO | S_IWUSR,
@@ -500,7 +526,6 @@ static int acpi_sleep_proc_init(void)
if (entry)
entry->proc_fops = &acpi_system_wakeup_device_fops;
- acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
return 0;
}
generated by cgit (git 2.34.1) at 2025-03-30 15:00:32 +0000