#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-
#define _COMPONENT ACPI_POWER_COMPONENT
-ACPI_MODULE_NAME ("acpi_power")
-
+ACPI_MODULE_NAME("acpi_power")
#define ACPI_POWER_COMPONENT 0x00800000
#define ACPI_POWER_CLASS "power_resource"
#define ACPI_POWER_DRIVER_NAME "ACPI Power Resource Driver"
#define ACPI_POWER_RESOURCE_STATE_OFF 0x00
#define ACPI_POWER_RESOURCE_STATE_ON 0x01
#define ACPI_POWER_RESOURCE_STATE_UNKNOWN 0xFF
-
-static int acpi_power_add (struct acpi_device *device);
-static int acpi_power_remove (struct acpi_device *device, int type);
+static int acpi_power_add(struct acpi_device *device);
+static int acpi_power_remove(struct acpi_device *device, int type);
static int acpi_power_open_fs(struct inode *inode, struct file *file);
static struct acpi_driver acpi_power_driver = {
- .name = ACPI_POWER_DRIVER_NAME,
- .class = ACPI_POWER_CLASS,
- .ids = ACPI_POWER_HID,
- .ops = {
- .add = acpi_power_add,
- .remove = acpi_power_remove,
- },
+ .name = ACPI_POWER_DRIVER_NAME,
+ .class = ACPI_POWER_CLASS,
+ .ids = ACPI_POWER_HID,
+ .ops = {
+ .add = acpi_power_add,
+ .remove = acpi_power_remove,
+ },
};
-struct acpi_power_resource
-{
- acpi_handle handle;
- acpi_bus_id name;
- u32 system_level;
- u32 order;
- int state;
- int references;
+struct acpi_power_resource {
+ acpi_handle handle;
+ acpi_bus_id name;
+ u32 system_level;
+ u32 order;
+ int state;
+ int references;
};
-static struct list_head acpi_power_resource_list;
+static struct list_head acpi_power_resource_list;
static struct file_operations acpi_power_fops = {
- .open = acpi_power_open_fs,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
+ .open = acpi_power_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
};
/* --------------------------------------------------------------------------
-------------------------------------------------------------------------- */
static int
-acpi_power_get_context (
- acpi_handle handle,
- struct acpi_power_resource **resource)
+acpi_power_get_context(acpi_handle handle,
+ struct acpi_power_resource **resource)
{
- int result = 0;
- struct acpi_device *device = NULL;
+ int result = 0;
+ struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_power_get_context");
result = acpi_bus_get_device(handle, &device);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Error getting context [%p]\n",
- handle));
+ handle));
return_VALUE(result);
}
- *resource = (struct acpi_power_resource *) acpi_driver_data(device);
+ *resource = (struct acpi_power_resource *)acpi_driver_data(device);
if (!resource)
return_VALUE(-ENODEV);
return_VALUE(0);
}
-
-static int
-acpi_power_get_state (
- struct acpi_power_resource *resource)
+static int acpi_power_get_state(struct acpi_power_resource *resource)
{
- acpi_status status = AE_OK;
- unsigned long sta = 0;
+ acpi_status status = AE_OK;
+ unsigned long sta = 0;
ACPI_FUNCTION_TRACE("acpi_power_get_state");
resource->state = ACPI_POWER_RESOURCE_STATE_OFF;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] is %s\n",
- resource->name, resource->state?"on":"off"));
+ resource->name, resource->state ? "on" : "off"));
return_VALUE(0);
}
-
-static int
-acpi_power_get_list_state (
- struct acpi_handle_list *list,
- int *state)
+static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
{
- int result = 0;
+ int result = 0;
struct acpi_power_resource *resource = NULL;
- u32 i = 0;
+ u32 i = 0;
ACPI_FUNCTION_TRACE("acpi_power_get_list_state");
/* The state of the list is 'on' IFF all resources are 'on'. */
- for (i=0; i<list->count; i++) {
+ for (i = 0; i < list->count; i++) {
result = acpi_power_get_context(list->handles[i], &resource);
if (result)
return_VALUE(result);
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource list is %s\n",
- *state?"on":"off"));
+ *state ? "on" : "off"));
return_VALUE(result);
}
-
-static int
-acpi_power_on (
- acpi_handle handle)
+static int acpi_power_on(acpi_handle handle)
{
- int result = 0;
- acpi_status status = AE_OK;
- struct acpi_device *device = NULL;
+ int result = 0;
+ acpi_status status = AE_OK;
+ struct acpi_device *device = NULL;
struct acpi_power_resource *resource = NULL;
ACPI_FUNCTION_TRACE("acpi_power_on");
resource->references++;
- if ((resource->references > 1)
- || (resource->state == ACPI_POWER_RESOURCE_STATE_ON)) {
+ if ((resource->references > 1)
+ || (resource->state == ACPI_POWER_RESOURCE_STATE_ON)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] already on\n",
- resource->name));
+ resource->name));
return_VALUE(0);
}
device->power.state = ACPI_STATE_D0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] turned on\n",
- resource->name));
+ resource->name));
return_VALUE(0);
}
-
-static int
-acpi_power_off_device (
- acpi_handle handle)
+static int acpi_power_off_device(acpi_handle handle)
{
- int result = 0;
- acpi_status status = AE_OK;
- struct acpi_device *device = NULL;
+ int result = 0;
+ acpi_status status = AE_OK;
+ struct acpi_device *device = NULL;
struct acpi_power_resource *resource = NULL;
ACPI_FUNCTION_TRACE("acpi_power_off_device");
resource->references--;
if (resource->references) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Resource [%s] is still in use, dereferencing\n",
- device->pnp.bus_id));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Resource [%s] is still in use, dereferencing\n",
+ device->pnp.bus_id));
return_VALUE(0);
}
if (resource->state == ACPI_POWER_RESOURCE_STATE_OFF) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] already off\n",
- device->pnp.bus_id));
+ device->pnp.bus_id));
return_VALUE(0);
}
device->power.state = ACPI_STATE_D3;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] turned off\n",
- resource->name));
+ resource->name));
return_VALUE(0);
}
* 1. Power on the power resources required for the wakeup device
* 2. Enable _PSW (power state wake) for the device if present
*/
-int acpi_enable_wakeup_device_power (struct acpi_device *dev)
+int acpi_enable_wakeup_device_power(struct acpi_device *dev)
{
- union acpi_object arg = {ACPI_TYPE_INTEGER};
- struct acpi_object_list arg_list = {1, &arg};
- acpi_status status = AE_OK;
- int i;
- int ret = 0;
+ union acpi_object arg = { ACPI_TYPE_INTEGER };
+ struct acpi_object_list arg_list = { 1, &arg };
+ acpi_status status = AE_OK;
+ int i;
+ int ret = 0;
ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device_power");
if (!dev || !dev->wakeup.flags.valid)
for (i = 0; i < dev->wakeup.resources.count; i++) {
ret = acpi_power_on(dev->wakeup.resources.handles[i]);
if (ret) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error transition power state\n"));
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Error transition power state\n"));
dev->wakeup.flags.valid = 0;
return_VALUE(-1);
}
* 1. Disable _PSW (power state wake)
* 2. Shutdown down the power resources
*/
-int acpi_disable_wakeup_device_power (struct acpi_device *dev)
+int acpi_disable_wakeup_device_power(struct acpi_device *dev)
{
- union acpi_object arg = {ACPI_TYPE_INTEGER};
- struct acpi_object_list arg_list = {1, &arg};
- acpi_status status = AE_OK;
- int i;
- int ret = 0;
+ union acpi_object arg = { ACPI_TYPE_INTEGER };
+ struct acpi_object_list arg_list = { 1, &arg };
+ acpi_status status = AE_OK;
+ int i;
+ int ret = 0;
ACPI_FUNCTION_TRACE("acpi_disable_wakeup_device_power");
if (!dev || !dev->wakeup.flags.valid)
return_VALUE(-1);
- arg.integer.value = 0;
+ arg.integer.value = 0;
/* Execute PSW */
status = acpi_evaluate_object(dev->handle, "_PSW", &arg_list, NULL);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
for (i = 0; i < dev->wakeup.resources.count; i++) {
ret = acpi_power_off_device(dev->wakeup.resources.handles[i]);
if (ret) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error transition power state\n"));
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Error transition power state\n"));
dev->wakeup.flags.valid = 0;
return_VALUE(-1);
}
Device Power Management
-------------------------------------------------------------------------- */
-int
-acpi_power_get_inferred_state (
- struct acpi_device *device)
+int acpi_power_get_inferred_state(struct acpi_device *device)
{
- int result = 0;
- struct acpi_handle_list *list = NULL;
- int list_state = 0;
- int i = 0;
+ int result = 0;
+ struct acpi_handle_list *list = NULL;
+ int list_state = 0;
+ int i = 0;
ACPI_FUNCTION_TRACE("acpi_power_get_inferred_state");
* We know a device's inferred power state when all the resources
* required for a given D-state are 'on'.
*/
- for (i=ACPI_STATE_D0; i<ACPI_STATE_D3; i++) {
+ for (i = ACPI_STATE_D0; i < ACPI_STATE_D3; i++) {
list = &device->power.states[i].resources;
if (list->count < 1)
continue;
return_VALUE(0);
}
-
-int
-acpi_power_transition (
- struct acpi_device *device,
- int state)
+int acpi_power_transition(struct acpi_device *device, int state)
{
- int result = 0;
- struct acpi_handle_list *cl = NULL; /* Current Resources */
- struct acpi_handle_list *tl = NULL; /* Target Resources */
- int i = 0;
+ int result = 0;
+ struct acpi_handle_list *cl = NULL; /* Current Resources */
+ struct acpi_handle_list *tl = NULL; /* Target Resources */
+ int i = 0;
ACPI_FUNCTION_TRACE("acpi_power_transition");
if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
return_VALUE(-EINVAL);
- if ((device->power.state < ACPI_STATE_D0) || (device->power.state > ACPI_STATE_D3))
+ if ((device->power.state < ACPI_STATE_D0)
+ || (device->power.state > ACPI_STATE_D3))
return_VALUE(-ENODEV);
cl = &device->power.states[device->power.state].resources;
* First we reference all power resources required in the target list
* (e.g. so the device doesn't lose power while transitioning).
*/
- for (i=0; i<tl->count; i++) {
+ for (i = 0; i < tl->count; i++) {
result = acpi_power_on(tl->handles[i]);
if (result)
goto end;
/*
* Then we dereference all power resources used in the current list.
*/
- for (i=0; i<cl->count; i++) {
+ for (i = 0; i < cl->count; i++) {
result = acpi_power_off_device(cl->handles[i]);
if (result)
goto end;
/* We shouldn't change the state till all above operations succeed */
device->power.state = state;
-end:
+ end:
if (result)
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Error transitioning device [%s] to D%d\n",
- device->pnp.bus_id, state));
+ ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+ "Error transitioning device [%s] to D%d\n",
+ device->pnp.bus_id, state));
return_VALUE(result);
}
-
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
-static struct proc_dir_entry *acpi_power_dir;
+static struct proc_dir_entry *acpi_power_dir;
static int acpi_power_seq_show(struct seq_file *seq, void *offset)
{
}
seq_printf(seq, "system level: S%d\n"
- "order: %d\n"
- "reference count: %d\n",
- resource->system_level,
- resource->order,
- resource->references);
+ "order: %d\n"
+ "reference count: %d\n",
+ resource->system_level,
+ resource->order, resource->references);
-end:
+ end:
return_VALUE(0);
}
return single_open(file, acpi_power_seq_show, PDE(inode)->data);
}
-static int
-acpi_power_add_fs (
- struct acpi_device *device)
+static int acpi_power_add_fs(struct acpi_device *device)
{
- struct proc_dir_entry *entry = NULL;
+ struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_power_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
- acpi_power_dir);
+ acpi_power_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
}
/* 'status' [R] */
entry = create_proc_entry(ACPI_POWER_FILE_STATUS,
- S_IRUGO, acpi_device_dir(device));
+ S_IRUGO, acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Unable to create '%s' fs entry\n",
- ACPI_POWER_FILE_STATUS));
+ "Unable to create '%s' fs entry\n",
+ ACPI_POWER_FILE_STATUS));
else {
entry->proc_fops = &acpi_power_fops;
entry->data = acpi_driver_data(device);
return_VALUE(0);
}
-
-static int
-acpi_power_remove_fs (
- struct acpi_device *device)
+static int acpi_power_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_power_remove_fs");
return_VALUE(0);
}
-
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
-static int
-acpi_power_add (
- struct acpi_device *device)
+static int acpi_power_add(struct acpi_device *device)
{
- int result = 0;
- acpi_status status = AE_OK;
+ int result = 0;
+ acpi_status status = AE_OK;
struct acpi_power_resource *resource = NULL;
- union acpi_object acpi_object;
- struct acpi_buffer buffer = {sizeof(acpi_object), &acpi_object};
+ union acpi_object acpi_object;
+ struct acpi_buffer buffer = { sizeof(acpi_object), &acpi_object };
ACPI_FUNCTION_TRACE("acpi_power_add");
result = acpi_power_add_fs(device);
if (result)
goto end;
-
+
printk(KERN_INFO PREFIX "%s [%s] (%s)\n", acpi_device_name(device),
- acpi_device_bid(device), resource->state?"on":"off");
+ acpi_device_bid(device), resource->state ? "on" : "off");
-end:
+ end:
if (result)
kfree(resource);
-
+
return_VALUE(result);
}
-
-static int
-acpi_power_remove (
- struct acpi_device *device,
- int type)
+static int acpi_power_remove(struct acpi_device *device, int type)
{
struct acpi_power_resource *resource = NULL;
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
- resource = (struct acpi_power_resource *) acpi_driver_data(device);
+ resource = (struct acpi_power_resource *)acpi_driver_data(device);
acpi_power_remove_fs(device);
return_VALUE(0);
}
-
-static int __init acpi_power_init (void)
+static int __init acpi_power_init(void)
{
- int result = 0;
+ int result = 0;
ACPI_FUNCTION_TRACE("acpi_power_init");
}
subsys_initcall(acpi_power_init);
-
git://git.onelab.eu / linux-2.6.git / blobdiff