u8 sleep_states[ACPI_S_STATE_COUNT];
-#ifdef CONFIG_PM_SLEEP
-static u32 acpi_target_sleep_state = ACPI_STATE_S0;
-#endif
-
static int acpi_sleep_prepare(u32 acpi_state)
{
#ifdef CONFIG_ACPI_SLEEP
return 0;
}
-#ifdef CONFIG_SUSPEND
-static struct platform_suspend_ops acpi_suspend_ops;
+#ifdef CONFIG_PM_SLEEP
+static u32 acpi_target_sleep_state = ACPI_STATE_S0;
+
+/*
+ * ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
+ * user to request that behavior by using the 'acpi_old_suspend_ordering'
+ * kernel command line option that causes the following variable to be set.
+ */
+static bool old_suspend_ordering;
+
+void __init acpi_old_suspend_ordering(void)
+{
+ old_suspend_ordering = true;
+}
+
+/**
+ * acpi_pm_disable_gpes - Disable the GPEs.
+ */
+static int acpi_pm_disable_gpes(void)
+{
+ acpi_hw_disable_all_gpes();
+ return 0;
+}
+
+/**
+ * __acpi_pm_prepare - Prepare the platform to enter the target state.
+ *
+ * If necessary, set the firmware waking vector and do arch-specific
+ * nastiness to get the wakeup code to the waking vector.
+ */
+static int __acpi_pm_prepare(void)
+{
+ int error = acpi_sleep_prepare(acpi_target_sleep_state);
+
+ if (error)
+ acpi_target_sleep_state = ACPI_STATE_S0;
+ return error;
+}
+
+/**
+ * acpi_pm_prepare - Prepare the platform to enter the target sleep
+ * state and disable the GPEs.
+ */
+static int acpi_pm_prepare(void)
+{
+ int error = __acpi_pm_prepare();
+
+ if (!error)
+ acpi_hw_disable_all_gpes();
+ return error;
+}
+
+/**
+ * acpi_pm_finish - Instruct the platform to leave a sleep state.
+ *
+ * This is called after we wake back up (or if entering the sleep state
+ * failed).
+ */
+static void acpi_pm_finish(void)
+{
+ u32 acpi_state = acpi_target_sleep_state;
+ if (acpi_state == ACPI_STATE_S0)
+ return;
+
+ printk(KERN_INFO PREFIX "Waking up from system sleep state S%d\n",
+ acpi_state);
+ acpi_disable_wakeup_device(acpi_state);
+ acpi_leave_sleep_state(acpi_state);
+
+ /* reset firmware waking vector */
+ acpi_set_firmware_waking_vector((acpi_physical_address) 0);
+
+ acpi_target_sleep_state = ACPI_STATE_S0;
+}
+
+/**
+ * acpi_pm_end - Finish up suspend sequence.
+ */
+static void acpi_pm_end(void)
+{
+ /*
+ * This is necessary in case acpi_pm_finish() is not called during a
+ * failing transition to a sleep state.
+ */
+ acpi_target_sleep_state = ACPI_STATE_S0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+#ifdef CONFIG_SUSPEND
extern void do_suspend_lowlevel(void);
static u32 acpi_suspend_states[] = {
[PM_SUSPEND_MAX] = ACPI_STATE_S5
};
-static int init_8259A_after_S1;
-
/**
* acpi_suspend_begin - Set the target system sleep state to the state
* associated with given @pm_state, if supported.
*/
-
static int acpi_suspend_begin(suspend_state_t pm_state)
{
u32 acpi_state = acpi_suspend_states[pm_state];
return error;
}
-/**
- * acpi_suspend_prepare - Do preliminary suspend work.
- *
- * If necessary, set the firmware waking vector and do arch-specific
- * nastiness to get the wakeup code to the waking vector.
- */
-
-static int acpi_suspend_prepare(void)
-{
- int error = acpi_sleep_prepare(acpi_target_sleep_state);
-
- if (error) {
- acpi_target_sleep_state = ACPI_STATE_S0;
- return error;
- }
-
- return ACPI_SUCCESS(acpi_hw_disable_all_gpes()) ? 0 : -EFAULT;
-}
-
/**
* acpi_suspend_enter - Actually enter a sleep state.
* @pm_state: ignored
* assembly, which in turn call acpi_enter_sleep_state().
* It's unfortunate, but it works. Please fix if you're feeling frisky.
*/
-
static int acpi_suspend_enter(suspend_state_t pm_state)
{
acpi_status status = AE_OK;
return ACPI_SUCCESS(status) ? 0 : -EFAULT;
}
-/**
- * acpi_suspend_finish - Instruct the platform to leave a sleep state.
- *
- * This is called after we wake back up (or if entering the sleep state
- * failed).
- */
-
-static void acpi_suspend_finish(void)
-{
- u32 acpi_state = acpi_target_sleep_state;
-
- acpi_disable_wakeup_device(acpi_state);
- acpi_leave_sleep_state(acpi_state);
-
- /* reset firmware waking vector */
- acpi_set_firmware_waking_vector((acpi_physical_address) 0);
-
- acpi_target_sleep_state = ACPI_STATE_S0;
-
-#ifdef CONFIG_X86
- if (init_8259A_after_S1) {
- printk("Broken toshiba laptop -> kicking interrupts\n");
- init_8259A(0);
- }
-#endif
-}
-
-/**
- * acpi_suspend_end - Finish up suspend sequence.
- */
-
-static void acpi_suspend_end(void)
-{
- /*
- * This is necessary in case acpi_suspend_finish() is not called during a
- * failing transition to a sleep state.
- */
- acpi_target_sleep_state = ACPI_STATE_S0;
-}
-
static int acpi_suspend_state_valid(suspend_state_t pm_state)
{
u32 acpi_state;
static struct platform_suspend_ops acpi_suspend_ops = {
.valid = acpi_suspend_state_valid,
.begin = acpi_suspend_begin,
- .prepare = acpi_suspend_prepare,
+ .prepare = acpi_pm_prepare,
.enter = acpi_suspend_enter,
- .finish = acpi_suspend_finish,
- .end = acpi_suspend_end,
+ .finish = acpi_pm_finish,
+ .end = acpi_pm_end,
};
+/**
+ * acpi_suspend_begin_old - Set the target system sleep state to the
+ * state associated with given @pm_state, if supported, and
+ * execute the _PTS control method. This function is used if the
+ * pre-ACPI 2.0 suspend ordering has been requested.
+ */
+static int acpi_suspend_begin_old(suspend_state_t pm_state)
+{
+ int error = acpi_suspend_begin(pm_state);
+
+ if (!error)
+ error = __acpi_pm_prepare();
+ return error;
+}
+
/*
- * Toshiba fails to preserve interrupts over S1, reinitialization
- * of 8259 is needed after S1 resume.
+ * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
+ * been requested.
*/
-static int __init init_ints_after_s1(const struct dmi_system_id *d)
+static struct platform_suspend_ops acpi_suspend_ops_old = {
+ .valid = acpi_suspend_state_valid,
+ .begin = acpi_suspend_begin_old,
+ .prepare = acpi_pm_disable_gpes,
+ .enter = acpi_suspend_enter,
+ .finish = acpi_pm_finish,
+ .end = acpi_pm_end,
+ .recover = acpi_pm_finish,
+};
+
+static int __init init_old_suspend_ordering(const struct dmi_system_id *d)
{
- printk(KERN_WARNING "%s with broken S1 detected.\n", d->ident);
- init_8259A_after_S1 = 1;
+ old_suspend_ordering = true;
return 0;
}
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_old_suspend_ordering,
+ .ident = "Abit KN9 (nForce4 variant)",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "http://www.abit.com.tw/"),
+ DMI_MATCH(DMI_BOARD_NAME, "KN9 Series(NF-CK804)"),
+ },
+ },
{},
};
#endif /* CONFIG_SUSPEND */
#ifdef CONFIG_HIBERNATION
-static int acpi_hibernation_begin(void)
-{
- acpi_target_sleep_state = ACPI_STATE_S4;
+static unsigned long s4_hardware_signature;
+static struct acpi_table_facs *facs;
+static bool nosigcheck;
- return 0;
+void __init acpi_no_s4_hw_signature(void)
+{
+ nosigcheck = true;
}
-static int acpi_hibernation_prepare(void)
+static int acpi_hibernation_begin(void)
{
- int error = acpi_sleep_prepare(ACPI_STATE_S4);
-
- if (error) {
- acpi_target_sleep_state = ACPI_STATE_S0;
- return error;
- }
-
- return ACPI_SUCCESS(acpi_hw_disable_all_gpes()) ? 0 : -EFAULT;
+ acpi_target_sleep_state = ACPI_STATE_S4;
+ return 0;
}
static int acpi_hibernation_enter(void)
acpi_enable();
/* Reprogram control registers and execute _BFS */
acpi_leave_sleep_state_prep(ACPI_STATE_S4);
+ /* Check the hardware signature */
+ if (facs && s4_hardware_signature != facs->hardware_signature) {
+ printk(KERN_EMERG "ACPI: Hardware changed while hibernated, "
+ "cannot resume!\n");
+ panic("ACPI S4 hardware signature mismatch");
+ }
}
-static void acpi_hibernation_finish(void)
+static void acpi_pm_enable_gpes(void)
{
- acpi_disable_wakeup_device(ACPI_STATE_S4);
- acpi_leave_sleep_state(ACPI_STATE_S4);
-
- /* reset firmware waking vector */
- acpi_set_firmware_waking_vector((acpi_physical_address) 0);
-
- acpi_target_sleep_state = ACPI_STATE_S0;
+ acpi_hw_enable_all_runtime_gpes();
}
-static void acpi_hibernation_end(void)
-{
- /*
- * This is necessary in case acpi_hibernation_finish() is not called
- * during a failing transition to the sleep state.
- */
- acpi_target_sleep_state = ACPI_STATE_S0;
-}
+static struct platform_hibernation_ops acpi_hibernation_ops = {
+ .begin = acpi_hibernation_begin,
+ .end = acpi_pm_end,
+ .pre_snapshot = acpi_pm_prepare,
+ .finish = acpi_pm_finish,
+ .prepare = acpi_pm_prepare,
+ .enter = acpi_hibernation_enter,
+ .leave = acpi_hibernation_leave,
+ .pre_restore = acpi_pm_disable_gpes,
+ .restore_cleanup = acpi_pm_enable_gpes,
+};
-static int acpi_hibernation_pre_restore(void)
+/**
+ * acpi_hibernation_begin_old - Set the target system sleep state to
+ * ACPI_STATE_S4 and execute the _PTS control method. This
+ * function is used if the pre-ACPI 2.0 suspend ordering has been
+ * requested.
+ */
+static int acpi_hibernation_begin_old(void)
{
- acpi_status status;
-
- status = acpi_hw_disable_all_gpes();
-
- return ACPI_SUCCESS(status) ? 0 : -EFAULT;
-}
+ int error = acpi_sleep_prepare(ACPI_STATE_S4);
-static void acpi_hibernation_restore_cleanup(void)
-{
- acpi_hw_enable_all_runtime_gpes();
+ if (!error)
+ acpi_target_sleep_state = ACPI_STATE_S4;
+ return error;
}
-static struct platform_hibernation_ops acpi_hibernation_ops = {
- .begin = acpi_hibernation_begin,
- .end = acpi_hibernation_end,
- .pre_snapshot = acpi_hibernation_prepare,
- .finish = acpi_hibernation_finish,
- .prepare = acpi_hibernation_prepare,
+/*
+ * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
+ * been requested.
+ */
+static struct platform_hibernation_ops acpi_hibernation_ops_old = {
+ .begin = acpi_hibernation_begin_old,
+ .end = acpi_pm_end,
+ .pre_snapshot = acpi_pm_disable_gpes,
+ .finish = acpi_pm_finish,
+ .prepare = acpi_pm_disable_gpes,
.enter = acpi_hibernation_enter,
.leave = acpi_hibernation_leave,
- .pre_restore = acpi_hibernation_pre_restore,
- .restore_cleanup = acpi_hibernation_restore_cleanup,
+ .pre_restore = acpi_pm_disable_gpes,
+ .restore_cleanup = acpi_pm_enable_gpes,
+ .recover = acpi_pm_finish,
};
-#endif /* CONFIG_HIBERNATION */
+#endif /* CONFIG_HIBERNATION */
int acpi_suspend(u32 acpi_state)
{
/**
* acpi_pm_device_sleep_state - return preferred power state of ACPI device
* in the system sleep state given by %acpi_target_sleep_state
- * @dev: device to examine
- * @wake: if set, the device should be able to wake up the system
+ * @dev: device to examine; its driver model wakeup flags control
+ * whether it should be able to wake up the system
* @d_min_p: used to store the upper limit of allowed states range
* Return value: preferred power state of the device on success, -ENODEV on
* failure (ie. if there's no 'struct acpi_device' for @dev)
* via @wake.
*/
-int acpi_pm_device_sleep_state(struct device *dev, int wake, int *d_min_p)
+int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p)
{
acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
struct acpi_device *adev;
* can wake the system. _S0W may be valid, too.
*/
if (acpi_target_sleep_state == ACPI_STATE_S0 ||
- (wake && adev->wakeup.state.enabled &&
+ (device_may_wakeup(dev) && adev->wakeup.state.enabled &&
adev->wakeup.sleep_state <= acpi_target_sleep_state)) {
acpi_status status;
*d_min_p = d_min;
return d_max;
}
+
+/**
+ * acpi_pm_device_sleep_wake - enable or disable the system wake-up
+ * capability of given device
+ * @dev: device to handle
+ * @enable: 'true' - enable, 'false' - disable the wake-up capability
+ */
+int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
+{
+ acpi_handle handle;
+ struct acpi_device *adev;
+
+ if (!device_may_wakeup(dev))
+ return -EINVAL;
+
+ handle = DEVICE_ACPI_HANDLE(dev);
+ if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
+ printk(KERN_DEBUG "ACPI handle has no context!\n");
+ return -ENODEV;
+ }
+
+ return enable ?
+ acpi_enable_wakeup_device_power(adev, acpi_target_sleep_state) :
+ acpi_disable_wakeup_device_power(adev);
+}
#endif
static void acpi_power_off_prepare(void)
}
}
- suspend_set_ops(&acpi_suspend_ops);
+ suspend_set_ops(old_suspend_ordering ?
+ &acpi_suspend_ops_old : &acpi_suspend_ops);
#endif
#ifdef CONFIG_HIBERNATION
status = acpi_get_sleep_type_data(ACPI_STATE_S4, &type_a, &type_b);
if (ACPI_SUCCESS(status)) {
- hibernation_set_ops(&acpi_hibernation_ops);
+ hibernation_set_ops(old_suspend_ordering ?
+ &acpi_hibernation_ops_old : &acpi_hibernation_ops);
sleep_states[ACPI_STATE_S4] = 1;
printk(" S4");
+ if (!nosigcheck) {
+ acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
+ (struct acpi_table_header **)&facs);
+ if (facs)
+ s4_hardware_signature =
+ facs->hardware_signature;
+ }
}
#endif
status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
git.openpandora.org / pandora-kernel.git / blobdiff