diff options
| -rw-r--r-- | drivers/acpi/power.c | 91 | ||||
| -rw-r--r-- | drivers/acpi/scan.c | 1 | ||||
| -rw-r--r-- | drivers/acpi/sleep.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/sleep.h | 2 |
4 files changed, 37 insertions, 59 deletions
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index b12933fd2e56..29803857a2ef 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -58,27 +58,6 @@ ACPI_MODULE_NAME("power"); #define ACPI_POWER_RESOURCE_STATE_ON 0x01 #define ACPI_POWER_RESOURCE_STATE_UNKNOWN 0xFF -static inline int acpi_power_add(struct acpi_device *device) { return 0; } - -static const struct acpi_device_id power_device_ids[] = { - {ACPI_POWER_HID, 0}, - {"", 0}, -}; -MODULE_DEVICE_TABLE(acpi, power_device_ids); - -#ifdef CONFIG_PM_SLEEP -static int acpi_power_resume(struct device *dev); -#endif -static SIMPLE_DEV_PM_OPS(acpi_power_pm, NULL, acpi_power_resume); - -static struct acpi_driver acpi_power_driver = { - .name = "power", - .class = ACPI_POWER_CLASS, - .ids = power_device_ids, - .ops.add = acpi_power_add, - .drv.pm = &acpi_power_pm, -}; - struct acpi_power_dependent_device { struct list_head node; struct acpi_device *adev; @@ -87,6 +66,7 @@ struct acpi_power_dependent_device { struct acpi_power_resource { struct acpi_device device; + struct list_head list_node; struct list_head dependent; char *name; u32 system_level; @@ -95,7 +75,8 @@ struct acpi_power_resource { struct mutex resource_lock; }; -static struct list_head acpi_power_resource_list; +static LIST_HEAD(acpi_power_resource_list); +static DEFINE_MUTEX(power_resource_list_lock); /* -------------------------------------------------------------------------- Power Resource Management @@ -643,8 +624,13 @@ static void acpi_release_power_resource(struct device *dev) struct acpi_device *device = to_acpi_device(dev); struct acpi_power_resource *resource; - acpi_free_ids(device); resource = container_of(device, struct acpi_power_resource, device); + + mutex_lock(&power_resource_list_lock); + list_del(&resource->list_node); + mutex_unlock(&power_resource_list_lock); + + acpi_free_ids(device); kfree(resource); } @@ -677,14 +663,14 @@ void acpi_add_power_resource(acpi_handle handle) /* Evalute the object to get the system level and resource order. */ status = acpi_evaluate_object(handle, NULL, NULL, &buffer); if (ACPI_FAILURE(status)) - goto out; + goto err; resource->system_level = acpi_object.power_resource.system_level; resource->order = acpi_object.power_resource.resource_order; result = acpi_power_get_state(handle, &state); if (result) - goto out; + goto err; switch (state) { case ACPI_POWER_RESOURCE_STATE_ON: @@ -702,51 +688,40 @@ void acpi_add_power_resource(acpi_handle handle) device->flags.match_driver = true; result = acpi_device_register(device, acpi_release_power_resource); - - out: if (result) - acpi_release_power_resource(&device->dev); + goto err; + mutex_lock(&power_resource_list_lock); + list_add(&resource->list_node, &acpi_power_resource_list); + mutex_unlock(&power_resource_list_lock); return; -} -/* -------------------------------------------------------------------------- - Driver Interface - -------------------------------------------------------------------------- */ + err: + acpi_release_power_resource(&device->dev); +} -#ifdef CONFIG_PM_SLEEP -static int acpi_power_resume(struct device *dev) +#ifdef CONFIG_ACPI_SLEEP +void acpi_resume_power_resources(void) { - int result = 0, state; - struct acpi_device *device; struct acpi_power_resource *resource; - if (!dev) - return -EINVAL; + mutex_lock(&power_resource_list_lock); - device = to_acpi_device(dev); - resource = acpi_driver_data(device); - if (!resource) - return -EINVAL; - - mutex_lock(&resource->resource_lock); + list_for_each_entry(resource, &acpi_power_resource_list, list_node) { + int result, state; - result = acpi_power_get_state(device->handle, &state); - if (result) - goto unlock; + mutex_lock(&resource->resource_lock); - if (state == ACPI_POWER_RESOURCE_STATE_OFF && resource->ref_count) - result = __acpi_power_on(resource); + result = acpi_power_get_state(resource->device.handle, &state); + if (!result && state == ACPI_POWER_RESOURCE_STATE_OFF + && resource->ref_count) { + dev_info(&resource->device.dev, "Turning ON\n"); + __acpi_power_on(resource); + } - unlock: - mutex_unlock(&resource->resource_lock); + mutex_unlock(&resource->resource_lock); + } - return result; + mutex_unlock(&power_resource_list_lock); } #endif - -int __init acpi_power_init(void) -{ - INIT_LIST_HEAD(&acpi_power_resource_list); - return acpi_bus_register_driver(&acpi_power_driver); -} diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 952b08af91de..c7ea9c2649a4 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1636,7 +1636,6 @@ int __init acpi_scan_init(void) printk(KERN_ERR PREFIX "Could not register bus type\n"); } - acpi_power_init(); acpi_pci_root_init(); /* diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 2fcc67d34b11..4ef0328579cc 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -386,6 +386,8 @@ static void acpi_pm_finish(void) acpi_target_sleep_state = ACPI_STATE_S0; + acpi_resume_power_resources(); + /* If we were woken with the fixed power button, provide a small * hint to userspace in the form of a wakeup event on the fixed power * button device (if it can be found). diff --git a/drivers/acpi/sleep.h b/drivers/acpi/sleep.h index 74d59c8f4678..0143540a2519 100644 --- a/drivers/acpi/sleep.h +++ b/drivers/acpi/sleep.h @@ -6,3 +6,5 @@ extern void acpi_disable_wakeup_devices(u8 sleep_state); extern struct list_head acpi_wakeup_device_list; extern struct mutex acpi_device_lock; + +extern void acpi_resume_power_resources(void); |