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Commit f02f465b authored by Len Brown's avatar Len Brown
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Merge branch 'dock' into release 

Conflicts:
	drivers/acpi/dock.c
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parents b6202832 747479a3
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Showing with 91 additions and 170 deletions
drivers/acpi/dock.c
View file @ f02f465b
......@@ -50,7 +50,6 @@ MODULE_PARM_DESC(immediate_undock, "1 (default) will cause the driver to "
" before undocking");
static struct atomic_notifier_head dock_notifier_list;
static char dock_device_name[] = "dock";
static const struct acpi_device_id dock_device_ids[] = {
{"LNXDOCK", 0},
......@@ -93,40 +92,30 @@ struct dock_dependent_device {
* Dock Dependent device functions *
*****************************************************************************/
/**
* alloc_dock_dependent_device - allocate and init a dependent device
* @handle: the acpi_handle of the dependent device
* add_dock_dependent_device - associate a device with the dock station
* @ds: The dock station
* @handle: handle of the dependent device
*
* Allocate memory for a dependent device structure for a device referenced
* by the acpi handle
* Add the dependent device to the dock's dependent device list.
*/
static struct dock_dependent_device *
alloc_dock_dependent_device(acpi_handle handle)
static int
add_dock_dependent_device(struct dock_station *ds, acpi_handle handle)
{
struct dock_dependent_device *dd;
dd = kzalloc(sizeof(*dd), GFP_KERNEL);
if (dd) {
dd->handle = handle;
INIT_LIST_HEAD(&dd->list);
INIT_LIST_HEAD(&dd->hotplug_list);
}
return dd;
}
if (!dd)
return -ENOMEM;
dd->handle = handle;
INIT_LIST_HEAD(&dd->list);
INIT_LIST_HEAD(&dd->hotplug_list);
/**
* add_dock_dependent_device - associate a device with the dock station
* @ds: The dock station
* @dd: The dependent device
*
* Add the dependent device to the dock's dependent device list.
*/
static void
add_dock_dependent_device(struct dock_station *ds,
struct dock_dependent_device *dd)
{
spin_lock(&ds->dd_lock);
list_add_tail(&dd->list, &ds->dependent_devices);
spin_unlock(&ds->dd_lock);
return 0;
}
/**
......@@ -249,6 +238,7 @@ static int is_battery(acpi_handle handle)
static int is_ejectable_bay(acpi_handle handle)
{
acpi_handle phandle;
if (!is_ejectable(handle))
return 0;
if (is_battery(handle) || is_ata(handle))
......@@ -275,14 +265,13 @@ int is_dock_device(acpi_handle handle)
if (is_dock(handle))
return 1;
list_for_each_entry(dock_station, &dock_stations, sibling) {
list_for_each_entry(dock_station, &dock_stations, sibling)
if (find_dock_dependent_device(dock_station, handle))
return 1;
}
return 0;
}
EXPORT_SYMBOL_GPL(is_dock_device);
/**
......@@ -305,8 +294,6 @@ static int dock_present(struct dock_station *ds)
return 0;
}
/**
* dock_create_acpi_device - add new devices to acpi
* @handle - handle of the device to add
......@@ -320,7 +307,7 @@ static int dock_present(struct dock_station *ds)
*/
static struct acpi_device * dock_create_acpi_device(acpi_handle handle)
{
struct acpi_device *device = NULL;
struct acpi_device *device;
struct acpi_device *parent_device;
acpi_handle parent;
int ret;
......@@ -337,8 +324,7 @@ static struct acpi_device * dock_create_acpi_device(acpi_handle handle)
ret = acpi_bus_add(&device, parent_device, handle,
ACPI_BUS_TYPE_DEVICE);
if (ret) {
pr_debug("error adding bus, %x\n",
-ret);
pr_debug("error adding bus, %x\n", -ret);
return NULL;
}
}
......@@ -364,7 +350,6 @@ static void dock_remove_acpi_device(acpi_handle handle)
}
}
/**
* hotplug_dock_devices - insert or remove devices on the dock station
* @ds: the dock station
......@@ -384,10 +369,9 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event)
/*
* First call driver specific hotplug functions
*/
list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) {
list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list)
if (dd->ops && dd->ops->handler)
dd->ops->handler(dd->handle, event, dd->context);
}
/*
* Now make sure that an acpi_device is created for each
......@@ -426,6 +410,7 @@ static void dock_event(struct dock_station *ds, u32 event, int num)
list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list)
if (dd->ops && dd->ops->uevent)
dd->ops->uevent(dd->handle, event, dd->context);
if (num != DOCK_EVENT)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
}
......@@ -456,8 +441,8 @@ static void eject_dock(struct dock_station *ds)
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = 1;
if (ACPI_FAILURE(acpi_evaluate_object(ds->handle, "_EJ0",
&arg_list, NULL)))
status = acpi_evaluate_object(ds->handle, "_EJ0", &arg_list, NULL);
if (ACPI_FAILURE(status))
pr_debug("Failed to evaluate _EJ0!\n");
}
......@@ -577,7 +562,6 @@ int register_dock_notifier(struct notifier_block *nb)
return atomic_notifier_chain_register(&dock_notifier_list, nb);
}
EXPORT_SYMBOL_GPL(register_dock_notifier);
/**
......@@ -591,7 +575,6 @@ void unregister_dock_notifier(struct notifier_block *nb)
atomic_notifier_chain_unregister(&dock_notifier_list, nb);
}
EXPORT_SYMBOL_GPL(unregister_dock_notifier);
/**
......@@ -636,7 +619,6 @@ register_hotplug_dock_device(acpi_handle handle, struct acpi_dock_ops *ops,
return ret;
}
EXPORT_SYMBOL_GPL(register_hotplug_dock_device);
/**
......@@ -657,7 +639,6 @@ void unregister_hotplug_dock_device(acpi_handle handle)
dock_del_hotplug_device(dock_station, dd);
}
}
EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device);
/**
......@@ -772,7 +753,7 @@ struct dock_data {
static void acpi_dock_deferred_cb(void *context)
{
struct dock_data *data = (struct dock_data *)context;
struct dock_data *data = context;
dock_notify(data->handle, data->event, data->ds);
kfree(data);
......@@ -782,23 +763,22 @@ static int acpi_dock_notifier_call(struct notifier_block *this,
unsigned long event, void *data)
{
struct dock_station *dock_station;
acpi_handle handle = (acpi_handle)data;
acpi_handle handle = data;
if (event != ACPI_NOTIFY_BUS_CHECK && event != ACPI_NOTIFY_DEVICE_CHECK
&& event != ACPI_NOTIFY_EJECT_REQUEST)
return 0;
list_for_each_entry(dock_station, &dock_stations, sibling) {
if (dock_station->handle == handle) {
struct dock_data *dock_data;
struct dock_data *dd;
dock_data = kmalloc(sizeof(*dock_data), GFP_KERNEL);
if (!dock_data)
dd = kmalloc(sizeof(*dd), GFP_KERNEL);
if (!dd)
return 0;
dock_data->handle = handle;
dock_data->event = event;
dock_data->ds = dock_station;
acpi_os_hotplug_execute(acpi_dock_deferred_cb,
dock_data);
dd->handle = handle;
dd->event = event;
dd->ds = dock_station;
acpi_os_hotplug_execute(acpi_dock_deferred_cb, dd);
return 0 ;
}
}
......@@ -826,7 +806,6 @@ find_dock_devices(acpi_handle handle, u32 lvl, void *context, void **rv)
acpi_status status;
acpi_handle tmp, parent;
struct dock_station *ds = context;
struct dock_dependent_device *dd;
status = acpi_bus_get_ejd(handle, &tmp);
if (ACPI_FAILURE(status)) {
......@@ -840,11 +819,9 @@ find_dock_devices(acpi_handle handle, u32 lvl, void *context, void **rv)
goto fdd_out;
}
if (tmp == ds->handle) {
dd = alloc_dock_dependent_device(handle);
if (dd)
add_dock_dependent_device(ds, dd);
}
if (tmp == ds->handle)
add_dock_dependent_device(ds, handle);
fdd_out:
return AE_OK;
}
......@@ -857,8 +834,7 @@ static ssize_t show_docked(struct device *dev,
{
struct acpi_device *tmp;
struct dock_station *dock_station = *((struct dock_station **)
dev->platform_data);
struct dock_station *dock_station = dev->platform_data;
if (ACPI_SUCCESS(acpi_bus_get_device(dock_station->handle, &tmp)))
return snprintf(buf, PAGE_SIZE, "1\n");
......@@ -872,8 +848,7 @@ static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
static ssize_t show_flags(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dock_station *dock_station = *((struct dock_station **)
dev->platform_data);
struct dock_station *dock_station = dev->platform_data;
return snprintf(buf, PAGE_SIZE, "%d\n", dock_station->flags);
}
......@@ -886,8 +861,7 @@ static ssize_t write_undock(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int ret;
struct dock_station *dock_station = *((struct dock_station **)
dev->platform_data);
struct dock_station *dock_station = dev->platform_data;
if (!count)
return -EINVAL;
......@@ -905,8 +879,7 @@ static ssize_t show_dock_uid(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned long long lbuf;
struct dock_station *dock_station = *((struct dock_station **)
dev->platform_data);
struct dock_station *dock_station = dev->platform_data;
acpi_status status = acpi_evaluate_integer(dock_station->handle,
"_UID", NULL, &lbuf);
if (ACPI_FAILURE(status))
......@@ -919,8 +892,7 @@ static DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL);
static ssize_t show_dock_type(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dock_station *dock_station = *((struct dock_station **)
dev->platform_data);
struct dock_station *dock_station = dev->platform_data;
char *type;
if (dock_station->flags & DOCK_IS_DOCK)
......@@ -936,6 +908,19 @@ static ssize_t show_dock_type(struct device *dev,
}
static DEVICE_ATTR(type, S_IRUGO, show_dock_type, NULL);
static struct attribute *dock_attributes[] = {
&dev_attr_docked.attr,
&dev_attr_flags.attr,
&dev_attr_undock.attr,
&dev_attr_uid.attr,
&dev_attr_type.attr,
NULL
};
static struct attribute_group dock_attribute_group = {
.attrs = dock_attributes
};
/**
* dock_add - add a new dock station
* @handle: the dock station handle
......@@ -945,39 +930,30 @@ static DEVICE_ATTR(type, S_IRUGO, show_dock_type, NULL);
*/
static int dock_add(acpi_handle handle)
{
int ret;
struct dock_dependent_device *dd;
struct dock_station *dock_station;
struct platform_device *dock_device;
int ret, id;
struct dock_station ds, *dock_station;
struct platform_device *dd;
id = dock_station_count;
dd = platform_device_register_data(NULL, "dock", id, &ds, sizeof(ds));
if (IS_ERR(dd))
return PTR_ERR(dd);
dock_station = dd->dev.platform_data;
/* allocate & initialize the dock_station private data */
dock_station = kzalloc(sizeof(*dock_station), GFP_KERNEL);
if (!dock_station)
return -ENOMEM;
dock_station->handle = handle;
dock_station->dock_device = dd;
dock_station->last_dock_time = jiffies - HZ;
INIT_LIST_HEAD(&dock_station->dependent_devices);
INIT_LIST_HEAD(&dock_station->hotplug_devices);
INIT_LIST_HEAD(&dock_station->sibling);
spin_lock_init(&dock_station->dd_lock);
mutex_init(&dock_station->hp_lock);
spin_lock_init(&dock_station->dd_lock);
INIT_LIST_HEAD(&dock_station->sibling);
INIT_LIST_HEAD(&dock_station->hotplug_devices);
ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list);
/* initialize platform device stuff */
dock_station->dock_device =
platform_device_register_simple(dock_device_name,
dock_station_count, NULL, 0);
dock_device = dock_station->dock_device;
if (IS_ERR(dock_device)) {
kfree(dock_station);
dock_station = NULL;
return PTR_ERR(dock_device);
}
platform_device_add_data(dock_device, &dock_station,
sizeof(struct dock_station *));
INIT_LIST_HEAD(&dock_station->dependent_devices);
/* we want the dock device to send uevents */
dev_set_uevent_suppress(&dock_device->dev, 0);
dev_set_uevent_suppress(&dd->dev, 0);
if (is_dock(handle))
dock_station->flags |= DOCK_IS_DOCK;
......@@ -986,47 +962,9 @@ static int dock_add(acpi_handle handle)
if (is_battery(handle))
dock_station->flags |= DOCK_IS_BAT;
ret = device_create_file(&dock_device->dev, &dev_attr_docked);
if (ret) {
printk(KERN_ERR "Error %d adding sysfs file\n", ret);
platform_device_unregister(dock_device);
kfree(dock_station);
dock_station = NULL;
return ret;
}
ret = device_create_file(&dock_device->dev, &dev_attr_undock);
if (ret) {
printk(KERN_ERR "Error %d adding sysfs file\n", ret);
device_remove_file(&dock_device->dev, &dev_attr_docked);
platform_device_unregister(dock_device);
kfree(dock_station);
dock_station = NULL;
return ret;
}
ret = device_create_file(&dock_device->dev, &dev_attr_uid);
if (ret) {
printk(KERN_ERR "Error %d adding sysfs file\n", ret);
device_remove_file(&dock_device->dev, &dev_attr_docked);
device_remove_file(&dock_device->dev, &dev_attr_undock);
platform_device_unregister(dock_device);
kfree(dock_station);
dock_station = NULL;
return ret;
}
ret = device_create_file(&dock_device->dev, &dev_attr_flags);
if (ret) {
printk(KERN_ERR "Error %d adding sysfs file\n", ret);
device_remove_file(&dock_device->dev, &dev_attr_docked);
device_remove_file(&dock_device->dev, &dev_attr_undock);
device_remove_file(&dock_device->dev, &dev_attr_uid);
platform_device_unregister(dock_device);
kfree(dock_station);
dock_station = NULL;
return ret;
}
ret = device_create_file(&dock_device->dev, &dev_attr_type);
ret = sysfs_create_group(&dd->dev.kobj, &dock_attribute_group);
if (ret)
printk(KERN_ERR"Error %d adding sysfs file\n", ret);
goto err_unregister;
/* Find dependent devices */
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
......@@ -1034,58 +972,43 @@ static int dock_add(acpi_handle handle)
dock_station, NULL);
/* add the dock station as a device dependent on itself */
dd = alloc_dock_dependent_device(handle);
if (!dd) {
kfree(dock_station);
dock_station = NULL;
ret = -ENOMEM;
goto dock_add_err_unregister;
}
add_dock_dependent_device(dock_station, dd);
ret = add_dock_dependent_device(dock_station, handle);
if (ret)
goto err_rmgroup;
dock_station_count++;
list_add(&dock_station->sibling, &dock_stations);
return 0;
dock_add_err_unregister:
device_remove_file(&dock_device->dev, &dev_attr_type);
device_remove_file(&dock_device->dev, &dev_attr_docked);
device_remove_file(&dock_device->dev, &dev_attr_undock);
device_remove_file(&dock_device->dev, &dev_attr_uid);
device_remove_file(&dock_device->dev, &dev_attr_flags);
platform_device_unregister(dock_device);
kfree(dock_station);
dock_station = NULL;
err_rmgroup:
sysfs_remove_group(&dd->dev.kobj, &dock_attribute_group);
err_unregister:
platform_device_unregister(dd);
printk(KERN_ERR "%s encountered error %d\n", __func__, ret);
return ret;
}
/**
* dock_remove - free up resources related to the dock station
*/
static int dock_remove(struct dock_station *dock_station)
static int dock_remove(struct dock_station *ds)
{
struct dock_dependent_device *dd, *tmp;
struct platform_device *dock_device = dock_station->dock_device;
struct platform_device *dock_device = ds->dock_device;
if (!dock_station_count)
return 0;
/* remove dependent devices */
list_for_each_entry_safe(dd, tmp, &dock_station->dependent_devices,
list)
kfree(dd);
list_for_each_entry_safe(dd, tmp, &ds->dependent_devices, list)
kfree(dd);
list_del(&ds->sibling);
/* cleanup sysfs */
device_remove_file(&dock_device->dev, &dev_attr_type);
device_remove_file(&dock_device->dev, &dev_attr_docked);
device_remove_file(&dock_device->dev, &dev_attr_undock);
device_remove_file(&dock_device->dev, &dev_attr_uid);
device_remove_file(&dock_device->dev, &dev_attr_flags);
sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group);
platform_device_unregister(dock_device);
/* free dock station memory */
kfree(dock_station);
dock_station = NULL;
return 0;
}
......@@ -1103,11 +1026,10 @@ find_dock(acpi_handle handle, u32 lvl, void *context, void **rv)
{
acpi_status status = AE_OK;
if (is_dock(handle)) {
if (dock_add(handle) >= 0) {
if (is_dock(handle))
if (dock_add(handle) >= 0)
status = AE_CTRL_TERMINATE;
}
}
return status;
}
......@@ -1145,8 +1067,7 @@ static int __init dock_init(void)
static void __exit dock_exit(void)
{
struct dock_station *dock_station;
struct dock_station *tmp;
struct dock_station *tmp, *dock_station;
unregister_acpi_bus_notifier(&dock_acpi_notifier);
list_for_each_entry_safe(dock_station, tmp, &dock_stations, sibling)
......
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