#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
+#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/sched.h>
#include <linux/pm.h>
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("acpi_bus_get_device");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* TBD: Support fixed-feature devices */
status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
if (ACPI_FAILURE(status) || !*device) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "No context for object [%p]\n",
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
handle));
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_get_device);
acpi_status status = AE_OK;
unsigned long sta = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_get_status");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/*
* Evaluate _STA if present.
status =
acpi_evaluate_integer(device->handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
STRUCT_TO_INT(device->status) = (int)sta;
}
device->pnp.bus_id,
(u32) STRUCT_TO_INT(device->status)));
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_get_status);
struct acpi_device *device = NULL;
unsigned long psc = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_get_power");
result = acpi_bus_get_device(handle, &device);
if (result)
- return_VALUE(result);
+ return result;
*state = ACPI_STATE_UNKNOWN;
status = acpi_evaluate_integer(device->handle, "_PSC",
NULL, &psc);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
device->power.state = (int)psc;
} else if (device->power.flags.power_resources) {
result = acpi_power_get_inferred_state(device);
if (result)
- return_VALUE(result);
+ return result;
}
*state = device->power.state;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n",
device->pnp.bus_id, device->power.state));
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_get_power);
struct acpi_device *device = NULL;
char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' };
- ACPI_FUNCTION_TRACE("acpi_bus_set_power");
result = acpi_bus_get_device(handle, &device);
if (result)
- return_VALUE(result);
+ return result;
if ((state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* Make sure this is a valid target state */
if (!device->flags.power_manageable) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Device is not power manageable\n"));
- return_VALUE(-ENODEV);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n",
+ device->kobj.name));
+ return -ENODEV;
}
/*
* Get device's current power state if it's unknown
* This means device power state isn't initialized or previous setting failed
*/
- if (device->power.state == ACPI_STATE_UNKNOWN)
- acpi_bus_get_power(device->handle, &device->power.state);
- if (state == device->power.state) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
- state));
- return_VALUE(0);
+ if (!device->flags.force_power_state) {
+ if (device->power.state == ACPI_STATE_UNKNOWN)
+ acpi_bus_get_power(device->handle, &device->power.state);
+ if (state == device->power.state) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
+ state));
+ return 0;
+ }
}
if (!device->power.states[state].flags.valid) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Device does not support D%d\n",
- state));
- return_VALUE(-ENODEV);
+ printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);
+ return -ENODEV;
}
if (device->parent && (state < device->parent->power.state)) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Cannot set device to a higher-powered state than parent\n"));
- return_VALUE(-ENODEV);
+ printk(KERN_WARNING PREFIX
+ "Cannot set device to a higher-powered"
+ " state than parent\n");
+ return -ENODEV;
}
/*
end:
if (result)
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Error transitioning device [%s] to D%d\n",
- device->pnp.bus_id, state));
+ printk(KERN_WARNING PREFIX
+ "Transitioning device [%s] to D%d\n",
+ device->pnp.bus_id, state);
else
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Device [%s] transitioned to D%d\n",
device->pnp.bus_id, state));
- return_VALUE(result);
+ return result;
}
EXPORT_SYMBOL(acpi_bus_set_power);
struct acpi_bus_event *event = NULL;
unsigned long flags = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_generate_event");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* drop event on the floor if no one's listening */
if (!event_is_open)
- return_VALUE(0);
+ return 0;
event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
if (!event)
- return_VALUE(-ENOMEM);
+ return -ENOMEM;
strcpy(event->device_class, device->pnp.device_class);
strcpy(event->bus_id, device->pnp.bus_id);
wake_up_interruptible(&acpi_bus_event_queue);
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_generate_event);
DECLARE_WAITQUEUE(wait, current);
- ACPI_FUNCTION_TRACE("acpi_bus_receive_event");
if (!event)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (list_empty(&acpi_bus_event_list)) {
set_current_state(TASK_RUNNING);
if (signal_pending(current))
- return_VALUE(-ERESTARTSYS);
+ return -ERESTARTSYS;
}
spin_lock_irqsave(&acpi_bus_event_lock, flags);
spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
if (!entry)
- return_VALUE(-ENODEV);
+ return -ENODEV;
memcpy(event, entry, sizeof(struct acpi_bus_event));
kfree(entry);
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_receive_event);
acpi_status status = 0;
struct acpi_device_status old_status;
- ACPI_FUNCTION_TRACE("acpi_bus_check_device");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (status_changed)
*status_changed = 0;
if (status_changed)
*status_changed = 1;
}
- return_VALUE(0);
+ return 0;
}
status = acpi_bus_get_status(device);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
- return_VALUE(0);
+ return 0;
if (status_changed)
*status_changed = 1;
/* TBD: Handle device removal */
}
- return_VALUE(0);
+ return 0;
}
static int acpi_bus_check_scope(struct acpi_device *device)
int result = 0;
int status_changed = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_check_scope");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* Status Change? */
result = acpi_bus_check_device(device, &status_changed);
if (result)
- return_VALUE(result);
+ return result;
if (!status_changed)
- return_VALUE(0);
+ return 0;
/*
* TBD: Enumerate child devices within this device's scope and
* run acpi_bus_check_device()'s on them.
*/
- return_VALUE(0);
+ return 0;
}
/**
int result = 0;
struct acpi_device *device = NULL;
- ACPI_FUNCTION_TRACE("acpi_bus_notify");
if (acpi_bus_get_device(handle, &device))
- return_VOID;
+ return;
switch (type) {
break;
}
- return_VOID;
+ return;
}
/* --------------------------------------------------------------------------
struct acpi_object_list arg_list = { 1, &arg };
char *message = NULL;
- ACPI_FUNCTION_TRACE("acpi_bus_init_irq");
/*
* Let the system know what interrupt model we are using by
break;
default:
printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PIC\n"));
- return_VALUE(-ENODEV);
+ ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
void __init acpi_early_init(void)
acpi_status status = AE_OK;
struct acpi_buffer buffer = { sizeof(acpi_fadt), &acpi_fadt };
- ACPI_FUNCTION_TRACE("acpi_early_init");
if (acpi_disabled)
- return_VOID;
+ return;
printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
goto error0;
}
- return_VOID;
+ return;
error0:
disable_acpi();
- return_VOID;
+ return;
}
static int __init acpi_bus_init(void)
acpi_status status = AE_OK;
extern acpi_status acpi_os_initialize1(void);
- ACPI_FUNCTION_TRACE("acpi_bus_init");
status = acpi_os_initialize1();
*/
acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL);
- return_VALUE(0);
+ return 0;
/* Mimic structured exception handling */
error1:
acpi_terminate();
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
decl_subsys(acpi, NULL, NULL);
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_init");
if (acpi_disabled) {
printk(KERN_INFO PREFIX "Interpreter disabled.\n");
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- firmware_register(&acpi_subsys);
+ result = firmware_register(&acpi_subsys);
+ if (result < 0)
+ printk(KERN_WARNING "%s: firmware_register error: %d\n",
+ __FUNCTION__, result);
result = acpi_bus_init();
} else
disable_acpi();
- return_VALUE(result);
+ return result;
}
subsys_initcall(acpi_init);
git.openpandora.org / pandora-kernel.git / blobdiff