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Commit 975a8e3e authored by Len Brown's avatar Len Brown
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Pull sysfs into test branch 

Conflicts:

	Documentation/feature-removal-schedule.txt
	include/acpi/acpi_drivers.h
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parents 1fcb71b8 bfd80223
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Documentation/feature-removal-schedule.txt
View file @ 975a8e3e
......@@ -274,6 +274,7 @@ Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
---------------------------
<<<<<<< test:Documentation/feature-removal-schedule.txt
What: ACPI hotkey driver (CONFIG_ACPI_HOTKEY)
When: 2.6.21
Why: hotkey.c was an attempt to consolidate multiple drivers that use
......@@ -306,11 +307,18 @@ Why: The ACPI namespace is effectively the symbol list for
the BIOS can be extracted and disassembled with acpidump
and iasl as documented in the pmtools package here:
http://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/utils
Who: Len Brown <len.brown@intel.com>
---------------------------
What: ACPI procfs interface
When: July 2007
Why: After ACPI sysfs conversion, ACPI attributes will be duplicated
in sysfs and the ACPI procfs interface should be removed.
Who: Zhang Rui <rui.zhang@intel.com>
---------------------------
What: /proc/acpi/button
When: August 2007
Why: /proc/acpi/button has been replaced by events to the input layer
......
drivers/acpi/Kconfig
View file @ 975a8e3e
......@@ -77,6 +77,20 @@ config ACPI_SLEEP_PROC_SLEEP
Create /proc/acpi/sleep
Deprecated by /sys/power/state
config ACPI_PROCFS
bool "Procfs interface (deprecated)"
depends on ACPI
default y
---help---
Procfs interface for ACPI is made optional for back-compatible.
As the same functions are duplicated in sysfs interface
and this proc interface will be removed some time later,
it's marked as deprecated.
( /proc/acpi/debug_layer && debug_level are deprecated by
/sys/module/acpi/parameters/debug_layer && debug_level.
/proc/acpi/info is deprecated by
/sys/module/acpi/parameters/acpica_version )
config ACPI_AC
tristate "AC Adapter"
depends on X86
......
drivers/acpi/Makefile
View file @ 975a8e3e
......@@ -37,6 +37,7 @@ endif
obj-y += sleep/
obj-y += bus.o glue.o
obj-y += scan.o motherboard.o
obj-$(CONFIG_ACPI_AC) += ac.o
obj-$(CONFIG_ACPI_BATTERY) += battery.o
obj-$(CONFIG_ACPI_BUTTON) += button.o
......@@ -57,7 +58,6 @@ obj-$(CONFIG_ACPI_NUMA) += numa.o
obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o
obj-$(CONFIG_ACPI_IBM) += ibm_acpi.o
obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
obj-y += scan.o motherboard.o
obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o
obj-y += cm_sbs.o
obj-$(CONFIG_ACPI_SBS) += i2c_ec.o sbs.o
drivers/acpi/battery.c
View file @ 975a8e3e
......@@ -64,7 +64,7 @@ extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
static int acpi_battery_add(struct acpi_device *device);
static int acpi_battery_remove(struct acpi_device *device, int type);
static int acpi_battery_resume(struct acpi_device *device, int status);
static int acpi_battery_resume(struct acpi_device *device);
static struct acpi_driver acpi_battery_driver = {
.name = ACPI_BATTERY_DRIVER_NAME,
......@@ -753,7 +753,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
}
/* this is needed to learn about changes made in suspended state */
static int acpi_battery_resume(struct acpi_device *device, int state)
static int acpi_battery_resume(struct acpi_device *device)
{
struct acpi_battery *battery;
......
drivers/acpi/bus.c
View file @ 975a8e3e
......@@ -192,7 +192,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
if (!device->flags.power_manageable) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n",
device->kobj.name));
device->dev.kobj.name));
return -ENODEV;
}
/*
......
drivers/acpi/button.c
View file @ 975a8e3e
......@@ -75,7 +75,7 @@ static int acpi_button_state_open_fs(struct inode *inode, struct file *file);
static struct acpi_driver acpi_button_driver = {
.name = ACPI_BUTTON_DRIVER_NAME,
.class = ACPI_BUTTON_CLASS,
.ids = "ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
.ids = "button_power,button_sleep,PNP0C0D,PNP0C0C,PNP0C0E",
.ops = {
.add = acpi_button_add,
.remove = acpi_button_remove,
......
drivers/acpi/container.c
View file @ 975a8e3e
......@@ -167,7 +167,7 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
if (ACPI_FAILURE(status) || !device) {
result = container_device_add(&device, handle);
if (!result)
kobject_uevent(&device->kobj,
kobject_uevent(&device->dev.kobj,
KOBJ_ONLINE);
else
printk("Failed to add container\n");
......@@ -175,13 +175,13 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
} else {
if (ACPI_SUCCESS(status)) {
/* device exist and this is a remove request */
kobject_uevent(&device->kobj, KOBJ_OFFLINE);
kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
}
}
break;
case ACPI_NOTIFY_EJECT_REQUEST:
if (!acpi_bus_get_device(handle, &device) && device) {
kobject_uevent(&device->kobj, KOBJ_OFFLINE);
kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
}
break;
default:
......
drivers/acpi/debug.c
View file @ 975a8e3e
......@@ -13,14 +13,11 @@
#define _COMPONENT ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME("debug")
#define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer"
#define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level"
#ifdef MODULE_PARAM_PREFIX
#undef MODULE_PARAM_PREFIX
#endif
#define MODULE_PARAM_PREFIX
module_param(acpi_dbg_layer, uint, 0400);
module_param(acpi_dbg_level, uint, 0400);
#define MODULE_PARAM_PREFIX "acpi."
struct acpi_dlayer {
const char *name;
......@@ -86,6 +83,60 @@ static const struct acpi_dlevel acpi_debug_levels[] = {
ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
};
/* --------------------------------------------------------------------------
FS Interface (/sys)
-------------------------------------------------------------------------- */
static int param_get_debug_layer(char *buffer, struct kernel_param *kp) {
int result = 0;
int i;
result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
for(i = 0; i <ARRAY_SIZE(acpi_debug_layers); i++) {
result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
acpi_debug_layers[i].name,
acpi_debug_layers[i].value,
(acpi_dbg_layer & acpi_debug_layers[i].value) ? '*' : ' ');
}
result += sprintf(buffer+result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
ACPI_ALL_DRIVERS,
(acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer &
ACPI_ALL_DRIVERS) == 0 ? ' ' : '-');
result += sprintf(buffer+result, "--\ndebug_layer = 0x%08X ( * = enabled)\n", acpi_dbg_layer);
return result;
}
static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
int result = 0;
int i;
result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
acpi_debug_levels[i].name,
acpi_debug_levels[i].value,
(acpi_dbg_level & acpi_debug_levels[i].
value) ? '*' : ' ');
}
result += sprintf(buffer+result, "--\ndebug_level = 0x%08X (* = enabled)\n",
acpi_dbg_level);
return result;
}
module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_PROCFS
#define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer"
#define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level"
static int
acpi_system_read_debug(char *page,
char **start, off_t off, int count, int *eof, void *data)
......@@ -221,3 +272,4 @@ static int __init acpi_debug_init(void)
}
subsys_initcall(acpi_debug_init);
#endif
drivers/acpi/fan.c
View file @ 975a8e3e
......@@ -48,8 +48,8 @@ MODULE_LICENSE("GPL");
static int acpi_fan_add(struct acpi_device *device);
static int acpi_fan_remove(struct acpi_device *device, int type);
static int acpi_fan_suspend(struct acpi_device *device, int state);
static int acpi_fan_resume(struct acpi_device *device, int state);
static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state);
static int acpi_fan_resume(struct acpi_device *device);
static struct acpi_driver acpi_fan_driver = {
.name = ACPI_FAN_DRIVER_NAME,
......@@ -237,7 +237,7 @@ static int acpi_fan_remove(struct acpi_device *device, int type)
return 0;
}
static int acpi_fan_suspend(struct acpi_device *device, int state)
static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state)
{
if (!device)
return -EINVAL;
......@@ -247,7 +247,7 @@ static int acpi_fan_suspend(struct acpi_device *device, int state)
return AE_OK;
}
static int acpi_fan_resume(struct acpi_device *device, int state)
static int acpi_fan_resume(struct acpi_device *device)
{
int result = 0;
int power_state = 0;
......
drivers/acpi/motherboard.c
View file @ 975a8e3e
......@@ -33,8 +33,7 @@
ACPI_MODULE_NAME("acpi_motherboard")
/* Dell use PNP0C01 instead of PNP0C02 */
#define ACPI_MB_HID1 "PNP0C01"
#define ACPI_MB_HID2 "PNP0C02"
#define ACPI_MB_HID "PNP0C01,PNP0C02"
/**
* Doesn't care about legacy IO ports, only IO ports beyond 0x1000 are reserved
* Doesn't care about the failure of 'request_region', since other may reserve
......@@ -110,19 +109,10 @@ static int acpi_motherboard_add(struct acpi_device *device)
return 0;
}
static struct acpi_driver acpi_motherboard_driver1 = {
static struct acpi_driver acpi_motherboard_driver = {
.name = "motherboard",
.class = "",
.ids = ACPI_MB_HID1,
.ops = {
.add = acpi_motherboard_add,
},
};
static struct acpi_driver acpi_motherboard_driver2 = {
.name = "motherboard",
.class = "",
.ids = ACPI_MB_HID2,
.ids = ACPI_MB_HID,
.ops = {
.add = acpi_motherboard_add,
},
......@@ -173,8 +163,7 @@ static void __init acpi_reserve_resources(void)
static int __init acpi_motherboard_init(void)
{
acpi_bus_register_driver(&acpi_motherboard_driver1);
acpi_bus_register_driver(&acpi_motherboard_driver2);
acpi_bus_register_driver(&acpi_motherboard_driver);
/*
* Guarantee motherboard IO reservation first
* This module must run after scan.c
......
drivers/acpi/pci_root.c
View file @ 975a8e3e
......@@ -165,6 +165,21 @@ static acpi_status try_get_root_bridge_busnr(acpi_handle handle, int *busnum)
return AE_OK;
}
static void acpi_pci_bridge_scan(struct acpi_device *device)
{
int status;
struct acpi_device *child = NULL;
if (device->flags.bus_address)
if (device->parent && device->parent->ops.bind) {
status = device->parent->ops.bind(device);
if (!status) {
list_for_each_entry(child, &device->children, node)
acpi_pci_bridge_scan(child);
}
}
}
static int acpi_pci_root_add(struct acpi_device *device)
{
int result = 0;
......@@ -173,6 +188,7 @@ static int acpi_pci_root_add(struct acpi_device *device)
acpi_status status = AE_OK;
unsigned long value = 0;
acpi_handle handle = NULL;
struct acpi_device *child;
if (!device)
......@@ -188,9 +204,6 @@ static int acpi_pci_root_add(struct acpi_device *device)
strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
acpi_driver_data(device) = root;
/*
* TBD: Doesn't the bus driver automatically set this?
*/
device->ops.bind = acpi_pci_bind;
/*
......@@ -312,6 +325,12 @@ static int acpi_pci_root_add(struct acpi_device *device)
result = acpi_pci_irq_add_prt(device->handle, root->id.segment,
root->id.bus);
/*
* Scan and bind all _ADR-Based Devices
*/
list_for_each_entry(child, &device->children, node)
acpi_pci_bridge_scan(child);
end:
if (result) {
if (!list_empty(&root->node))
......
drivers/acpi/processor_core.c
View file @ 975a8e3e
......@@ -814,7 +814,7 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
return -ENODEV;
if ((pr->id >= 0) && (pr->id < NR_CPUS)) {
kobject_uevent(&(*device)->kobj, KOBJ_ONLINE);
kobject_uevent(&(*device)->dev.kobj, KOBJ_ONLINE);
}
return 0;
}
......@@ -852,13 +852,13 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
}
if (pr->id >= 0 && (pr->id < NR_CPUS)) {
kobject_uevent(&device->kobj, KOBJ_OFFLINE);
kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
break;
}
result = acpi_processor_start(device);
if ((!result) && ((pr->id >= 0) && (pr->id < NR_CPUS))) {
kobject_uevent(&device->kobj, KOBJ_ONLINE);
kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
} else {
printk(KERN_ERR PREFIX "Device [%s] failed to start\n",
acpi_device_bid(device));
......@@ -881,7 +881,7 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
}
if ((pr->id < NR_CPUS) && (cpu_present(pr->id)))
kobject_uevent(&device->kobj, KOBJ_OFFLINE);
kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
......
drivers/acpi/scan.c
View file @ 975a8e3e
......@@ -21,470 +21,408 @@ extern struct acpi_device *acpi_root;
#define ACPI_BUS_DEVICE_NAME "System Bus"
static LIST_HEAD(acpi_device_list);
static LIST_HEAD(acpi_bus_id_list);
DEFINE_SPINLOCK(acpi_device_lock);
LIST_HEAD(acpi_wakeup_device_list);
static void acpi_device_release(struct kobject *kobj)
{
struct acpi_device *dev = container_of(kobj, struct acpi_device, kobj);
kfree(dev->pnp.cid_list);
kfree(dev);
}
struct acpi_device_attribute {
struct attribute attr;
ssize_t(*show) (struct acpi_device *, char *);
ssize_t(*store) (struct acpi_device *, const char *, size_t);
struct acpi_device_bus_id{
char bus_id[15];
unsigned int instance_no;
struct list_head node;
};
typedef void acpi_device_sysfs_files(struct kobject *,
const struct attribute *);
static void setup_sys_fs_device_files(struct acpi_device *dev,
acpi_device_sysfs_files * func);
#define create_sysfs_device_files(dev) \
setup_sys_fs_device_files(dev, (acpi_device_sysfs_files *)&sysfs_create_file)
#define remove_sysfs_device_files(dev) \
setup_sys_fs_device_files(dev, (acpi_device_sysfs_files *)&sysfs_remove_file)
#define to_acpi_device(n) container_of(n, struct acpi_device, kobj)
#define to_handle_attr(n) container_of(n, struct acpi_device_attribute, attr);
static ssize_t acpi_device_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct acpi_device *device = to_acpi_device(kobj);
struct acpi_device_attribute *attribute = to_handle_attr(attr);
return attribute->show ? attribute->show(device, buf) : -EIO;
}
static ssize_t acpi_device_attr_store(struct kobject *kobj,
struct attribute *attr, const char *buf,
size_t len)
static int acpi_eject_operation(acpi_handle handle, int lockable)
{
struct acpi_device *device = to_acpi_device(kobj);
struct acpi_device_attribute *attribute = to_handle_attr(attr);
return attribute->store ? attribute->store(device, buf, len) : -EIO;
}
static struct sysfs_ops acpi_device_sysfs_ops = {
.show = acpi_device_attr_show,
.store = acpi_device_attr_store,
};
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status = AE_OK;
static struct kobj_type ktype_acpi_ns = {
.sysfs_ops = &acpi_device_sysfs_ops,
.release = acpi_device_release,
};
/*
* TBD: evaluate _PS3?
*/
static int namespace_uevent(struct kset *kset, struct kobject *kobj,
char **envp, int num_envp, char *buffer,
int buffer_size)
{
struct acpi_device *dev = to_acpi_device(kobj);
int i = 0;
int len = 0;
if (lockable) {
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = 0;
acpi_evaluate_object(handle, "_LCK", &arg_list, NULL);
}
if (!dev->driver)
return 0;
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = 1;
if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
"PHYSDEVDRIVER=%s", dev->driver->name))
return -ENOMEM;
/*
* TBD: _EJD support.
*/
envp[i] = NULL;
status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
if (ACPI_FAILURE(status)) {
return (-ENODEV);
}
return 0;
return (0);
}
static struct kset_uevent_ops namespace_uevent_ops = {
.uevent = &namespace_uevent,
};
static ssize_t
acpi_eject_store(struct device *d, struct device_attribute *attr,
const char *buf, size_t count)
{
int result;
int ret = count;
int islockable;
acpi_status status;
acpi_handle handle;
acpi_object_type type = 0;
struct acpi_device *acpi_device = to_acpi_device(d);
static struct kset acpi_namespace_kset = {
.kobj = {
.name = "namespace",
},
.subsys = &acpi_subsys,
.ktype = &ktype_acpi_ns,
.uevent_ops = &namespace_uevent_ops,
};
if ((!count) || (buf[0] != '1')) {
return -EINVAL;
}
#ifndef FORCE_EJECT
if (acpi_device->driver == NULL) {
ret = -ENODEV;
goto err;
}
#endif
status = acpi_get_type(acpi_device->handle, &type);
if (ACPI_FAILURE(status) || (!acpi_device->flags.ejectable)) {
ret = -ENODEV;
goto err;
}
static void acpi_device_register(struct acpi_device *device,
struct acpi_device *parent)
{
int err;
islockable = acpi_device->flags.lockable;
handle = acpi_device->handle;
/*
* Linkage
* -------
* Link this device to its parent and siblings.
*/
INIT_LIST_HEAD(&device->children);
INIT_LIST_HEAD(&device->node);
INIT_LIST_HEAD(&device->g_list);
INIT_LIST_HEAD(&device->wakeup_list);
result = acpi_bus_trim(acpi_device, 1);
spin_lock(&acpi_device_lock);
if (device->parent) {
list_add_tail(&device->node, &device->parent->children);
list_add_tail(&device->g_list, &device->parent->g_list);
} else
list_add_tail(&device->g_list, &acpi_device_list);
if (device->wakeup.flags.valid)
list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
spin_unlock(&acpi_device_lock);
if (!result)
result = acpi_eject_operation(handle, islockable);
strlcpy(device->kobj.name, device->pnp.bus_id, KOBJ_NAME_LEN);
if (parent)
device->kobj.parent = &parent->kobj;
device->kobj.ktype = &ktype_acpi_ns;
device->kobj.kset = &acpi_namespace_kset;
err = kobject_register(&device->kobj);
if (err < 0)
printk(KERN_WARNING "%s: kobject_register error: %d\n",
__FUNCTION__, err);
create_sysfs_device_files(device);
if (result) {
ret = -EBUSY;
}
err:
return ret;
}
static void acpi_device_unregister(struct acpi_device *device, int type)
{
spin_lock(&acpi_device_lock);
if (device->parent) {
list_del(&device->node);
list_del(&device->g_list);
} else
list_del(&device->g_list);
list_del(&device->wakeup_list);
static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
spin_unlock(&acpi_device_lock);
static ssize_t
acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *buf) {
struct acpi_device *acpi_dev = to_acpi_device(dev);
acpi_detach_data(device->handle, acpi_bus_data_handler);
remove_sysfs_device_files(device);
kobject_unregister(&device->kobj);
return sprintf(buf, "%s\n", acpi_dev->pnp.hardware_id);
}
static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL);
void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context)
{
static ssize_t
acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) {
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
int result;
/* TBD */
result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
if(result)
goto end;
return;
result = sprintf(buf, "%s\n", (char*)path.pointer);
kfree(path.pointer);
end:
return result;
}
static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
static int acpi_bus_get_power_flags(struct acpi_device *device)
static int acpi_device_setup_files(struct acpi_device *dev)
{
acpi_status status = 0;
acpi_handle handle = NULL;
u32 i = 0;
/*
* Power Management Flags
*/
status = acpi_get_handle(device->handle, "_PSC", &handle);
if (ACPI_SUCCESS(status))
device->power.flags.explicit_get = 1;
status = acpi_get_handle(device->handle, "_IRC", &handle);
if (ACPI_SUCCESS(status))
device->power.flags.inrush_current = 1;
acpi_status status;
acpi_handle temp;
int result = 0;
/*
* Enumerate supported power management states
* Devices gotten from FADT don't have a "path" attribute
*/
for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3; i++) {
struct acpi_device_power_state *ps = &device->power.states[i];
char object_name[5] = { '_', 'P', 'R', '0' + i, '\0' };
/* Evaluate "_PRx" to se if power resources are referenced */
acpi_evaluate_reference(device->handle, object_name, NULL,
&ps->resources);
if (ps->resources.count) {
device->power.flags.power_resources = 1;
ps->flags.valid = 1;
}
/* Evaluate "_PSx" to see if we can do explicit sets */
object_name[2] = 'S';
status = acpi_get_handle(device->handle, object_name, &handle);
if (ACPI_SUCCESS(status)) {
ps->flags.explicit_set = 1;
ps->flags.valid = 1;
}
/* State is valid if we have some power control */
if (ps->resources.count || ps->flags.explicit_set)
ps->flags.valid = 1;
ps->power = -1; /* Unknown - driver assigned */
ps->latency = -1; /* Unknown - driver assigned */
if(dev->handle) {
result = device_create_file(&dev->dev, &dev_attr_path);
if(result)
goto end;
}
/* Set defaults for D0 and D3 states (always valid) */
device->power.states[ACPI_STATE_D0].flags.valid = 1;
device->power.states[ACPI_STATE_D0].power = 100;
device->power.states[ACPI_STATE_D3].flags.valid = 1;
device->power.states[ACPI_STATE_D3].power = 0;
/* TBD: System wake support and resource requirements. */
device->power.state = ACPI_STATE_UNKNOWN;
if(dev->flags.hardware_id) {
result = device_create_file(&dev->dev, &dev_attr_hid);
if(result)
goto end;
}
return 0;
/*
* If device has _EJ0, 'eject' file is created that is used to trigger
* hot-removal function from userland.
*/
status = acpi_get_handle(dev->handle, "_EJ0", &temp);
if (ACPI_SUCCESS(status))
result = device_create_file(&dev->dev, &dev_attr_eject);
end:
return result;
}
int acpi_match_ids(struct acpi_device *device, char *ids)
static void acpi_device_remove_files(struct acpi_device *dev)
{
if (device->flags.hardware_id)
if (strstr(ids, device->pnp.hardware_id))
return 0;
acpi_status status;
acpi_handle temp;
if (device->flags.compatible_ids) {
struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
int i;
/*
* If device has _EJ0, 'eject' file is created that is used to trigger
* hot-removal function from userland.
*/
status = acpi_get_handle(dev->handle, "_EJ0", &temp);
if (ACPI_SUCCESS(status))
device_remove_file(&dev->dev, &dev_attr_eject);
/* compare multiple _CID entries against driver ids */
for (i = 0; i < cid_list->count; i++) {
if (strstr(ids, cid_list->id[i].value))
return 0;
}
}
return -ENOENT;
if(dev->flags.hardware_id)
device_remove_file(&dev->dev, &dev_attr_hid);
if(dev->handle)
device_remove_file(&dev->dev, &dev_attr_path);
}
static acpi_status
acpi_bus_extract_wakeup_device_power_package(struct acpi_device *device,
union acpi_object *package)
/* --------------------------------------------------------------------------
ACPI Bus operations
-------------------------------------------------------------------------- */
static void acpi_device_release(struct device *dev)
{
int i = 0;
union acpi_object *element = NULL;
struct acpi_device *acpi_dev = to_acpi_device(dev);
if (!device || !package || (package->package.count < 2))
return AE_BAD_PARAMETER;
element = &(package->package.elements[0]);
if (!element)
return AE_BAD_PARAMETER;
if (element->type == ACPI_TYPE_PACKAGE) {
if ((element->package.count < 2) ||
(element->package.elements[0].type !=
ACPI_TYPE_LOCAL_REFERENCE)
|| (element->package.elements[1].type != ACPI_TYPE_INTEGER))
return AE_BAD_DATA;
device->wakeup.gpe_device =
element->package.elements[0].reference.handle;
device->wakeup.gpe_number =
(u32) element->package.elements[1].integer.value;
} else if (element->type == ACPI_TYPE_INTEGER) {
device->wakeup.gpe_number = element->integer.value;
} else
return AE_BAD_DATA;
element = &(package->package.elements[1]);
if (element->type != ACPI_TYPE_INTEGER) {
return AE_BAD_DATA;
}
device->wakeup.sleep_state = element->integer.value;
if ((package->package.count - 2) > ACPI_MAX_HANDLES) {
return AE_NO_MEMORY;
}
device->wakeup.resources.count = package->package.count - 2;
for (i = 0; i < device->wakeup.resources.count; i++) {
element = &(package->package.elements[i + 2]);
if (element->type != ACPI_TYPE_ANY) {
return AE_BAD_DATA;
}
device->wakeup.resources.handles[i] = element->reference.handle;
}
return AE_OK;
kfree(acpi_dev->pnp.cid_list);
kfree(acpi_dev);
}
static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
static int acpi_device_suspend(struct device *dev, pm_message_t state)
{
acpi_status status = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *package = NULL;
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = acpi_dev->driver;
if (acpi_drv && acpi_drv->ops.suspend)
return acpi_drv->ops.suspend(acpi_dev, state);
return 0;
}
/* _PRW */
status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRW"));
goto end;
}
package = (union acpi_object *)buffer.pointer;
status = acpi_bus_extract_wakeup_device_power_package(device, package);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Extracting _PRW package"));
goto end;
}
kfree(buffer.pointer);
device->wakeup.flags.valid = 1;
/* Power button, Lid switch always enable wakeup */
if (!acpi_match_ids(device, "PNP0C0D,PNP0C0C,PNP0C0E"))
device->wakeup.flags.run_wake = 1;
static int acpi_device_resume(struct device *dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = acpi_dev->driver;
end:
if (ACPI_FAILURE(status))
device->flags.wake_capable = 0;
if (acpi_drv && acpi_drv->ops.resume)
return acpi_drv->ops.resume(acpi_dev);
return 0;
}
/* --------------------------------------------------------------------------
ACPI sysfs device file support
-------------------------------------------------------------------------- */
static ssize_t acpi_eject_store(struct acpi_device *device,
const char *buf, size_t count);
#define ACPI_DEVICE_ATTR(_name,_mode,_show,_store) \
static struct acpi_device_attribute acpi_device_attr_##_name = \
__ATTR(_name, _mode, _show, _store)
static int acpi_bus_match(struct device *dev, struct device_driver *drv)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = to_acpi_driver(drv);
ACPI_DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
return !acpi_match_ids(acpi_dev, acpi_drv->ids);
}
/**
* setup_sys_fs_device_files - sets up the device files under device namespace
* @dev: acpi_device object
* @func: function pointer to create or destroy the device file
*/
static void
setup_sys_fs_device_files(struct acpi_device *dev,
acpi_device_sysfs_files * func)
static int acpi_device_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
{
acpi_status status;
acpi_handle temp = NULL;
/*
* If device has _EJ0, 'eject' file is created that is used to trigger
* hot-removal function from userland.
*/
status = acpi_get_handle(dev->handle, "_EJ0", &temp);
if (ACPI_SUCCESS(status))
(*(func)) (&dev->kobj, &acpi_device_attr_eject.attr);
struct acpi_device *acpi_dev = to_acpi_device(dev);
int i = 0, length = 0, ret = 0;
if (acpi_dev->flags.hardware_id)
ret = add_uevent_var(envp, num_envp, &i,
buffer, buffer_size, &length,
"HWID=%s", acpi_dev->pnp.hardware_id);
if (ret)
return -ENOMEM;
if (acpi_dev->flags.compatible_ids) {
int j;
struct acpi_compatible_id_list *cid_list;
cid_list = acpi_dev->pnp.cid_list;
for (j = 0; j < cid_list->count; j++) {
ret = add_uevent_var(envp, num_envp, &i, buffer,
buffer_size, &length, "COMPTID=%s",
cid_list->id[j].value);
if (ret)
return -ENOMEM;
}
}
envp[i] = NULL;
return 0;
}
static int acpi_eject_operation(acpi_handle handle, int lockable)
static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *);
static int acpi_start_single_object(struct acpi_device *);
static int acpi_device_probe(struct device * dev)
{
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status = AE_OK;
/*
* TBD: evaluate _PS3?
*/
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
int ret;
ret = acpi_bus_driver_init(acpi_dev, acpi_drv);
if (!ret) {
if (acpi_dev->bus_ops.acpi_op_start)
acpi_start_single_object(acpi_dev);
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found driver [%s] for device [%s]\n",
acpi_drv->name, acpi_dev->pnp.bus_id));
get_device(dev);
}
return ret;
}
if (lockable) {
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = 0;
acpi_evaluate_object(handle, "_LCK", &arg_list, NULL);
static int acpi_device_remove(struct device * dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = acpi_dev->driver;
if (acpi_drv) {
if (acpi_drv->ops.stop)
acpi_drv->ops.stop(acpi_dev, acpi_dev->removal_type);
if (acpi_drv->ops.remove)
acpi_drv->ops.remove(acpi_dev, acpi_dev->removal_type);
}
acpi_dev->driver = NULL;
acpi_driver_data(dev) = NULL;
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = 1;
put_device(dev);
return 0;
}
/*
* TBD: _EJD support.
*/
static void acpi_device_shutdown(struct device *dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = acpi_dev->driver;
status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
if (ACPI_FAILURE(status)) {
return (-ENODEV);
}
if (acpi_drv && acpi_drv->ops.shutdown)
acpi_drv->ops.shutdown(acpi_dev);
return (0);
return ;
}
static ssize_t
acpi_eject_store(struct acpi_device *device, const char *buf, size_t count)
static struct bus_type acpi_bus_type = {
.name = "acpi",
.suspend = acpi_device_suspend,
.resume = acpi_device_resume,
.shutdown = acpi_device_shutdown,
.match = acpi_bus_match,
.probe = acpi_device_probe,
.remove = acpi_device_remove,
.uevent = acpi_device_uevent,
};
static int acpi_device_register(struct acpi_device *device,
struct acpi_device *parent)
{
int result;
int ret = count;
int islockable;
acpi_status status;
acpi_handle handle;
acpi_object_type type = 0;
struct acpi_device_bus_id *acpi_device_bus_id, *new_bus_id;
int found = 0;
/*
* Linkage
* -------
* Link this device to its parent and siblings.
*/
INIT_LIST_HEAD(&device->children);
INIT_LIST_HEAD(&device->node);
INIT_LIST_HEAD(&device->g_list);
INIT_LIST_HEAD(&device->wakeup_list);
if ((!count) || (buf[0] != '1')) {
return -EINVAL;
new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);
if (!new_bus_id) {
printk(KERN_ERR PREFIX "Memory allocation error\n");
return -ENOMEM;
}
#ifndef FORCE_EJECT
if (device->driver == NULL) {
ret = -ENODEV;
goto err;
spin_lock(&acpi_device_lock);
/*
* Find suitable bus_id and instance number in acpi_bus_id_list
* If failed, create one and link it into acpi_bus_id_list
*/
list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) {
if(!strcmp(acpi_device_bus_id->bus_id, device->flags.hardware_id? device->pnp.hardware_id : "device")) {
acpi_device_bus_id->instance_no ++;
found = 1;
kfree(new_bus_id);
break;
}
}
#endif
status = acpi_get_type(device->handle, &type);
if (ACPI_FAILURE(status) || (!device->flags.ejectable)) {
ret = -ENODEV;
goto err;
if(!found) {
acpi_device_bus_id = new_bus_id;
strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "device");
acpi_device_bus_id->instance_no = 0;
list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
}
sprintf(device->dev.bus_id, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
islockable = device->flags.lockable;
handle = device->handle;
result = acpi_bus_trim(device, 1);
if (!result)
result = acpi_eject_operation(handle, islockable);
if (device->parent) {
list_add_tail(&device->node, &device->parent->children);
list_add_tail(&device->g_list, &device->parent->g_list);
} else
list_add_tail(&device->g_list, &acpi_device_list);
if (device->wakeup.flags.valid)
list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
spin_unlock(&acpi_device_lock);
if (result) {
ret = -EBUSY;
if (device->parent)
device->dev.parent = &parent->dev;
device->dev.bus = &acpi_bus_type;
device_initialize(&device->dev);
device->dev.release = &acpi_device_release;
result = device_add(&device->dev);
if(result) {
printk("Error adding device %s", device->dev.bus_id);
goto end;
}
err:
return ret;
}
/* --------------------------------------------------------------------------
Performance Management
-------------------------------------------------------------------------- */
result = acpi_device_setup_files(device);
if(result)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error creating sysfs interface for device %s\n", device->dev.bus_id));
static int acpi_bus_get_perf_flags(struct acpi_device *device)
{
device->performance.state = ACPI_STATE_UNKNOWN;
device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
return 0;
end:
spin_lock(&acpi_device_lock);
if (device->parent) {
list_del(&device->node);
list_del(&device->g_list);
} else
list_del(&device->g_list);
list_del(&device->wakeup_list);
spin_unlock(&acpi_device_lock);
return result;
}
/* --------------------------------------------------------------------------
Driver Management
-------------------------------------------------------------------------- */
static void acpi_device_unregister(struct acpi_device *device, int type)
{
spin_lock(&acpi_device_lock);
if (device->parent) {
list_del(&device->node);
list_del(&device->g_list);
} else
list_del(&device->g_list);
static LIST_HEAD(acpi_bus_drivers);
list_del(&device->wakeup_list);
spin_unlock(&acpi_device_lock);
/**
* acpi_bus_match - match device IDs to driver's supported IDs
* @device: the device that we are trying to match to a driver
* @driver: driver whose device id table is being checked
*
* Checks the device's hardware (_HID) or compatible (_CID) ids to see if it
* matches the specified driver's criteria.
*/
static int
acpi_bus_match(struct acpi_device *device, struct acpi_driver *driver)
{
if (driver && driver->ops.match)
return driver->ops.match(device, driver);
return acpi_match_ids(device, driver->ids);
acpi_detach_data(device->handle, acpi_bus_data_handler);
acpi_device_remove_files(device);
device_unregister(&device->dev);
}
/* --------------------------------------------------------------------------
Driver Management
-------------------------------------------------------------------------- */
/**
* acpi_bus_driver_init - add a device to a driver
* @device: the device to add and initialize
* @driver: driver for the device
*
* Used to initialize a device via its device driver. Called whenever a
* driver is bound to a device. Invokes the driver's add() and start() ops.
* driver is bound to a device. Invokes the driver's add() ops.
*/
static int
acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
......@@ -535,162 +473,246 @@ static int acpi_start_single_object(struct acpi_device *device)
return result;
}
static void acpi_driver_attach(struct acpi_driver *drv)
/**
* acpi_bus_register_driver - register a driver with the ACPI bus
* @driver: driver being registered
*
* Registers a driver with the ACPI bus. Searches the namespace for all
* devices that match the driver's criteria and binds. Returns zero for
* success or a negative error status for failure.
*/
int acpi_bus_register_driver(struct acpi_driver *driver)
{
struct list_head *node, *next;
int ret;
if (acpi_disabled)
return -ENODEV;
driver->drv.name = driver->name;
driver->drv.bus = &acpi_bus_type;
driver->drv.owner = driver->owner;
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_device_list) {
struct acpi_device *dev =
container_of(node, struct acpi_device, g_list);
ret = driver_register(&driver->drv);
return ret;
}
if (dev->driver || !dev->status.present)
continue;
spin_unlock(&acpi_device_lock);
if (!acpi_bus_match(dev, drv)) {
if (!acpi_bus_driver_init(dev, drv)) {
acpi_start_single_object(dev);
atomic_inc(&drv->references);
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found driver [%s] for device [%s]\n",
drv->name, dev->pnp.bus_id));
}
EXPORT_SYMBOL(acpi_bus_register_driver);
/**
* acpi_bus_unregister_driver - unregisters a driver with the APIC bus
* @driver: driver to unregister
*
* Unregisters a driver with the ACPI bus. Searches the namespace for all
* devices that match the driver's criteria and unbinds.
*/
void acpi_bus_unregister_driver(struct acpi_driver *driver)
{
driver_unregister(&driver->drv);
}
EXPORT_SYMBOL(acpi_bus_unregister_driver);
/* --------------------------------------------------------------------------
Device Enumeration
-------------------------------------------------------------------------- */
acpi_status
acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
{
acpi_status status;
acpi_handle tmp;
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
union acpi_object *obj;
status = acpi_get_handle(handle, "_EJD", &tmp);
if (ACPI_FAILURE(status))
return status;
status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
if (ACPI_SUCCESS(status)) {
obj = buffer.pointer;
status = acpi_get_handle(NULL, obj->string.pointer, ejd);
kfree(buffer.pointer);
}
return status;
}
EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context)
{
/* TBD */
return;
}
int acpi_match_ids(struct acpi_device *device, char *ids)
{
if (device->flags.hardware_id)
if (strstr(ids, device->pnp.hardware_id))
return 0;
if (device->flags.compatible_ids) {
struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
int i;
/* compare multiple _CID entries against driver ids */
for (i = 0; i < cid_list->count; i++) {
if (strstr(ids, cid_list->id[i].value))
return 0;
}
}
return -ENOENT;
}
static int acpi_bus_get_perf_flags(struct acpi_device *device)
{
device->performance.state = ACPI_STATE_UNKNOWN;
return 0;
}
static acpi_status
acpi_bus_extract_wakeup_device_power_package(struct acpi_device *device,
union acpi_object *package)
{
int i = 0;
union acpi_object *element = NULL;
if (!device || !package || (package->package.count < 2))
return AE_BAD_PARAMETER;
element = &(package->package.elements[0]);
if (!element)
return AE_BAD_PARAMETER;
if (element->type == ACPI_TYPE_PACKAGE) {
if ((element->package.count < 2) ||
(element->package.elements[0].type !=
ACPI_TYPE_LOCAL_REFERENCE)
|| (element->package.elements[1].type != ACPI_TYPE_INTEGER))
return AE_BAD_DATA;
device->wakeup.gpe_device =
element->package.elements[0].reference.handle;
device->wakeup.gpe_number =
(u32) element->package.elements[1].integer.value;
} else if (element->type == ACPI_TYPE_INTEGER) {
device->wakeup.gpe_number = element->integer.value;
} else
return AE_BAD_DATA;
element = &(package->package.elements[1]);
if (element->type != ACPI_TYPE_INTEGER) {
return AE_BAD_DATA;
}
device->wakeup.sleep_state = element->integer.value;
if ((package->package.count - 2) > ACPI_MAX_HANDLES) {
return AE_NO_MEMORY;
}
device->wakeup.resources.count = package->package.count - 2;
for (i = 0; i < device->wakeup.resources.count; i++) {
element = &(package->package.elements[i + 2]);
if (element->type != ACPI_TYPE_ANY) {
return AE_BAD_DATA;
}
spin_lock(&acpi_device_lock);
device->wakeup.resources.handles[i] = element->reference.handle;
}
spin_unlock(&acpi_device_lock);
return AE_OK;
}
static void acpi_driver_detach(struct acpi_driver *drv)
static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
{
struct list_head *node, *next;
acpi_status status = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *package = NULL;
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_device_list) {
struct acpi_device *dev =
container_of(node, struct acpi_device, g_list);
if (dev->driver == drv) {
spin_unlock(&acpi_device_lock);
if (drv->ops.remove)
drv->ops.remove(dev, ACPI_BUS_REMOVAL_NORMAL);
spin_lock(&acpi_device_lock);
dev->driver = NULL;
dev->driver_data = NULL;
atomic_dec(&drv->references);
}
/* _PRW */
status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRW"));
goto end;
}
spin_unlock(&acpi_device_lock);
}
/**
* acpi_bus_register_driver - register a driver with the ACPI bus
* @driver: driver being registered
*
* Registers a driver with the ACPI bus. Searches the namespace for all
* devices that match the driver's criteria and binds. Returns zero for
* success or a negative error status for failure.
*/
int acpi_bus_register_driver(struct acpi_driver *driver)
{
package = (union acpi_object *)buffer.pointer;
status = acpi_bus_extract_wakeup_device_power_package(device, package);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Extracting _PRW package"));
goto end;
}
if (acpi_disabled)
return -ENODEV;
kfree(buffer.pointer);
spin_lock(&acpi_device_lock);
list_add_tail(&driver->node, &acpi_bus_drivers);
spin_unlock(&acpi_device_lock);
acpi_driver_attach(driver);
device->wakeup.flags.valid = 1;
/* Power button, Lid switch always enable wakeup */
if (!acpi_match_ids(device, "PNP0C0D,PNP0C0C,PNP0C0E"))
device->wakeup.flags.run_wake = 1;
end:
if (ACPI_FAILURE(status))
device->flags.wake_capable = 0;
return 0;
}
EXPORT_SYMBOL(acpi_bus_register_driver);
/**
* acpi_bus_unregister_driver - unregisters a driver with the APIC bus
* @driver: driver to unregister
*
* Unregisters a driver with the ACPI bus. Searches the namespace for all
* devices that match the driver's criteria and unbinds.
*/
void acpi_bus_unregister_driver(struct acpi_driver *driver)
static int acpi_bus_get_power_flags(struct acpi_device *device)
{
acpi_driver_detach(driver);
acpi_status status = 0;
acpi_handle handle = NULL;
u32 i = 0;
if (!atomic_read(&driver->references)) {
spin_lock(&acpi_device_lock);
list_del_init(&driver->node);
spin_unlock(&acpi_device_lock);
}
return;
}
EXPORT_SYMBOL(acpi_bus_unregister_driver);
/*
* Power Management Flags
*/
status = acpi_get_handle(device->handle, "_PSC", &handle);
if (ACPI_SUCCESS(status))
device->power.flags.explicit_get = 1;
status = acpi_get_handle(device->handle, "_IRC", &handle);
if (ACPI_SUCCESS(status))
device->power.flags.inrush_current = 1;
/**
* acpi_bus_find_driver - check if there is a driver installed for the device
* @device: device that we are trying to find a supporting driver for
*
* Parses the list of registered drivers looking for a driver applicable for
* the specified device.
*/
static int acpi_bus_find_driver(struct acpi_device *device)
{
int result = 0;
struct list_head *node, *next;
/*
* Enumerate supported power management states
*/
for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3; i++) {
struct acpi_device_power_state *ps = &device->power.states[i];
char object_name[5] = { '_', 'P', 'R', '0' + i, '\0' };
/* Evaluate "_PRx" to se if power resources are referenced */
acpi_evaluate_reference(device->handle, object_name, NULL,
&ps->resources);
if (ps->resources.count) {
device->power.flags.power_resources = 1;
ps->flags.valid = 1;
}
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_bus_drivers) {
struct acpi_driver *driver =
container_of(node, struct acpi_driver, node);
atomic_inc(&driver->references);
spin_unlock(&acpi_device_lock);
if (!acpi_bus_match(device, driver)) {
result = acpi_bus_driver_init(device, driver);
if (!result)
goto Done;
/* Evaluate "_PSx" to see if we can do explicit sets */
object_name[2] = 'S';
status = acpi_get_handle(device->handle, object_name, &handle);
if (ACPI_SUCCESS(status)) {
ps->flags.explicit_set = 1;
ps->flags.valid = 1;
}
atomic_dec(&driver->references);
spin_lock(&acpi_device_lock);
}
spin_unlock(&acpi_device_lock);
Done:
return result;
}
/* State is valid if we have some power control */
if (ps->resources.count || ps->flags.explicit_set)
ps->flags.valid = 1;
/* --------------------------------------------------------------------------
Device Enumeration
-------------------------------------------------------------------------- */
ps->power = -1; /* Unknown - driver assigned */
ps->latency = -1; /* Unknown - driver assigned */
}
acpi_status
acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
{
acpi_status status;
acpi_handle tmp;
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
union acpi_object *obj;
/* Set defaults for D0 and D3 states (always valid) */
device->power.states[ACPI_STATE_D0].flags.valid = 1;
device->power.states[ACPI_STATE_D0].power = 100;
device->power.states[ACPI_STATE_D3].flags.valid = 1;
device->power.states[ACPI_STATE_D3].power = 0;
status = acpi_get_handle(handle, "_EJD", &tmp);
if (ACPI_FAILURE(status))
return status;
/* TBD: System wake support and resource requirements. */
status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
if (ACPI_SUCCESS(status)) {
obj = buffer.pointer;
status = acpi_get_handle(NULL, obj->string.pointer, ejd);
kfree(buffer.pointer);
}
return status;
}
EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
device->power.state = ACPI_STATE_UNKNOWN;
return 0;
}
static int acpi_bus_get_flags(struct acpi_device *device)
{
......@@ -782,6 +804,39 @@ static void acpi_device_get_busid(struct acpi_device *device,
}
}
static int
acpi_video_bus_match(struct acpi_device *device)
{
acpi_handle h_dummy1;
acpi_handle h_dummy2;
acpi_handle h_dummy3;
if (!device)
return -EINVAL;
/* Since there is no HID, CID for ACPI Video drivers, we have
* to check well known required nodes for each feature we support.
*/
/* Does this device able to support video switching ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
return 0;
/* Does this device able to retrieve a video ROM ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
return 0;
/* Does this device able to configure which video head to be POSTed ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
return 0;
return -ENODEV;
}
static void acpi_device_set_id(struct acpi_device *device,
struct acpi_device *parent, acpi_handle handle,
int type)
......@@ -812,6 +867,12 @@ static void acpi_device_set_id(struct acpi_device *device,
device->pnp.bus_address = info->address;
device->flags.bus_address = 1;
}
if(!(info->valid & (ACPI_VALID_HID | ACPI_VALID_CID))){
status = acpi_video_bus_match(device);
if(ACPI_SUCCESS(status))
hid = ACPI_VIDEO_HID;
}
break;
case ACPI_BUS_TYPE_POWER:
hid = ACPI_POWER_HID;
......@@ -933,41 +994,22 @@ static void acpi_device_get_debug_info(struct acpi_device *device,
static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
{
int result = 0;
struct acpi_driver *driver;
if (!dev)
return -EINVAL;
driver = dev->driver;
if ((driver) && (driver->ops.remove)) {
if (driver->ops.stop) {
result = driver->ops.stop(dev, ACPI_BUS_REMOVAL_EJECT);
if (result)
return result;
}
result = dev->driver->ops.remove(dev, ACPI_BUS_REMOVAL_EJECT);
if (result) {
return result;
}
atomic_dec(&dev->driver->references);
dev->driver = NULL;
acpi_driver_data(dev) = NULL;
}
dev->removal_type = ACPI_BUS_REMOVAL_EJECT;
device_release_driver(&dev->dev);
if (!rmdevice)
return 0;
/*
* unbind _ADR-Based Devices when hot removal
*/
if (dev->flags.bus_address) {
if ((dev->parent) && (dev->parent->ops.unbind))
dev->parent->ops.unbind(dev);
}
acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT);
return 0;
......@@ -975,7 +1017,8 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
static int
acpi_add_single_object(struct acpi_device **child,
struct acpi_device *parent, acpi_handle handle, int type)
struct acpi_device *parent, acpi_handle handle, int type,
struct acpi_bus_ops *ops)
{
int result = 0;
struct acpi_device *device = NULL;
......@@ -992,6 +1035,8 @@ acpi_add_single_object(struct acpi_device **child,
device->handle = handle;
device->parent = parent;
device->bus_ops = *ops; /* workround for not call .start */
acpi_device_get_busid(device, handle, type);
......@@ -1078,31 +1123,16 @@ acpi_add_single_object(struct acpi_device **child,
acpi_device_get_debug_info(device, handle, type);
acpi_device_register(device, parent);
result = acpi_device_register(device, parent);
/*
* Bind _ADR-Based Devices
* -----------------------
* If there's a a bus address (_ADR) then we utilize the parent's
* 'bind' function (if exists) to bind the ACPI- and natively-
* enumerated device representations.
* Bind _ADR-Based Devices when hot add
*/
if (device->flags.bus_address) {
if (device->parent && device->parent->ops.bind)
device->parent->ops.bind(device);
}
/*
* Locate & Attach Driver
* ----------------------
* If there's a hardware id (_HID) or compatible ids (_CID) we check
* to see if there's a driver installed for this kind of device. Note
* that drivers can install before or after a device is enumerated.
*
* TBD: Assumes LDM provides driver hot-plug capability.
*/
acpi_bus_find_driver(device);
end:
if (!result)
*child = device;
......@@ -1188,14 +1218,14 @@ static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
if (ops->acpi_op_add)
status = acpi_add_single_object(&child, parent,
chandle, type);
chandle, type, ops);
else
status = acpi_bus_get_device(chandle, &child);
if (ACPI_FAILURE(status))
continue;
if (ops->acpi_op_start) {
if (ops->acpi_op_start && !(ops->acpi_op_add)) {
status = acpi_start_single_object(child);
if (ACPI_FAILURE(status))
continue;
......@@ -1233,13 +1263,13 @@ acpi_bus_add(struct acpi_device **child,
int result;
struct acpi_bus_ops ops;
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
result = acpi_add_single_object(child, parent, handle, type);
if (!result) {
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
result = acpi_add_single_object(child, parent, handle, type, &ops);
if (!result)
result = acpi_bus_scan(*child, &ops);
}
return result;
}
......@@ -1325,127 +1355,35 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
{
int result = 0;
struct acpi_device *device = NULL;
struct acpi_bus_ops ops;
if (!root)
return -ENODEV;
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
ops.acpi_op_start = 1;
/*
* Enumerate all fixed-feature devices.
*/
if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) {
result = acpi_add_single_object(&device, acpi_root,
NULL,
ACPI_BUS_TYPE_POWER_BUTTON);
if (!result)
result = acpi_start_single_object(device);
ACPI_BUS_TYPE_POWER_BUTTON,
&ops);
}
if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
result = acpi_add_single_object(&device, acpi_root,
NULL,
ACPI_BUS_TYPE_SLEEP_BUTTON);
if (!result)
result = acpi_start_single_object(device);
ACPI_BUS_TYPE_SLEEP_BUTTON,
&ops);
}
return result;
}
static inline struct acpi_device * to_acpi_dev(struct device * dev)
{
return container_of(dev, struct acpi_device, dev);
}
static int root_suspend(struct acpi_device * acpi_dev, pm_message_t state)
{
struct acpi_device * dev, * next;
int result;
spin_lock(&acpi_device_lock);
list_for_each_entry_safe_reverse(dev, next, &acpi_device_list, g_list) {
if (dev->driver && dev->driver->ops.suspend) {
spin_unlock(&acpi_device_lock);
result = dev->driver->ops.suspend(dev, 0);
if (result) {
printk(KERN_ERR PREFIX "[%s - %s] Suspend failed: %d\n",
acpi_device_name(dev),
acpi_device_bid(dev), result);
}
spin_lock(&acpi_device_lock);
}
}
spin_unlock(&acpi_device_lock);
return 0;
}
static int acpi_device_suspend(struct device * dev, pm_message_t state)
{
struct acpi_device * acpi_dev = to_acpi_dev(dev);
/*
* For now, we should only register 1 generic device -
* the ACPI root device - and from there, we walk the
* tree of ACPI devices to suspend each one using the
* ACPI driver methods.
*/
if (acpi_dev->handle == ACPI_ROOT_OBJECT)
root_suspend(acpi_dev, state);
return 0;
}
static int root_resume(struct acpi_device * acpi_dev)
{
struct acpi_device * dev, * next;
int result;
spin_lock(&acpi_device_lock);
list_for_each_entry_safe(dev, next, &acpi_device_list, g_list) {
if (dev->driver && dev->driver->ops.resume) {
spin_unlock(&acpi_device_lock);
result = dev->driver->ops.resume(dev, 0);
if (result) {
printk(KERN_ERR PREFIX "[%s - %s] resume failed: %d\n",
acpi_device_name(dev),
acpi_device_bid(dev), result);
}
spin_lock(&acpi_device_lock);
}
}
spin_unlock(&acpi_device_lock);
return 0;
}
static int acpi_device_resume(struct device * dev)
{
struct acpi_device * acpi_dev = to_acpi_dev(dev);
/*
* For now, we should only register 1 generic device -
* the ACPI root device - and from there, we walk the
* tree of ACPI devices to resume each one using the
* ACPI driver methods.
*/
if (acpi_dev->handle == ACPI_ROOT_OBJECT)
root_resume(acpi_dev);
return 0;
}
static struct bus_type acpi_bus_type = {
.name = "acpi",
.suspend = acpi_device_suspend,
.resume = acpi_device_resume,
};
static int __init acpi_scan_init(void)
{
int result;
......@@ -1455,9 +1393,9 @@ static int __init acpi_scan_init(void)
if (acpi_disabled)
return 0;
result = kset_register(&acpi_namespace_kset);
if (result < 0)
printk(KERN_ERR PREFIX "kset_register error: %d\n", result);
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
ops.acpi_op_start = 1;
result = bus_register(&acpi_bus_type);
if (result) {
......@@ -1469,32 +1407,16 @@ static int __init acpi_scan_init(void)
* Create the root device in the bus's device tree
*/
result = acpi_add_single_object(&acpi_root, NULL, ACPI_ROOT_OBJECT,
ACPI_BUS_TYPE_SYSTEM);
ACPI_BUS_TYPE_SYSTEM, &ops);
if (result)
goto Done;
result = acpi_start_single_object(acpi_root);
if (result)
goto Done;
acpi_root->dev.bus = &acpi_bus_type;
snprintf(acpi_root->dev.bus_id, BUS_ID_SIZE, "%s", acpi_bus_type.name);
result = device_register(&acpi_root->dev);
if (result) {
/* We don't want to quit even if we failed to add suspend/resume */
printk(KERN_ERR PREFIX "Could not register device\n");
}
/*
* Enumerate devices in the ACPI namespace.
*/
result = acpi_bus_scan_fixed(acpi_root);
if (!result) {
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
ops.acpi_op_start = 1;
if (!result)
result = acpi_bus_scan(acpi_root, &ops);
}
if (result)
acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
......
drivers/acpi/system.c
View file @ 975a8e3e
......@@ -32,6 +32,11 @@
#define _COMPONENT ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME("acpi_system")
#ifdef MODULE_PARAM_PREFIX
#undef MODULE_PARAM_PREFIX
#endif
#define MODULE_PARAM_PREFIX "acpi."
#define ACPI_SYSTEM_CLASS "system"
#define ACPI_SYSTEM_DRIVER_NAME "ACPI System Driver"
#define ACPI_SYSTEM_DEVICE_NAME "System"
......@@ -40,9 +45,23 @@ ACPI_MODULE_NAME("acpi_system")
#define ACPI_SYSTEM_FILE_DSDT "dsdt"
#define ACPI_SYSTEM_FILE_FADT "fadt"
/*
* Make ACPICA version work as module param
*/
static int param_get_acpica_version(char *buffer, struct kernel_param *kp) {
int result;
result = sprintf(buffer, "%x", ACPI_CA_VERSION);
return result;
}
module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_PROCFS
static int acpi_system_read_info(struct seq_file *seq, void *offset)
{
......@@ -62,6 +81,7 @@ static const struct file_operations acpi_system_info_ops = {
.llseek = seq_lseek,
.release = single_release,
};
#endif
static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t,
loff_t *);
......@@ -125,6 +145,7 @@ static int __init acpi_system_init(void)
if (acpi_disabled)
return 0;
#ifdef CONFIG_ACPI_PROCFS
/* 'info' [R] */
name = ACPI_SYSTEM_FILE_INFO;
entry = create_proc_entry(name, S_IRUGO, acpi_root_dir);
......@@ -133,6 +154,7 @@ static int __init acpi_system_init(void)
else {
entry->proc_fops = &acpi_system_info_ops;
}
#endif
/* 'dsdt' [R] */
name = ACPI_SYSTEM_FILE_DSDT;
......@@ -156,7 +178,9 @@ static int __init acpi_system_init(void)
Error:
remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir);
remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir);
#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir);
#endif
error = -EFAULT;
goto Done;
......
drivers/acpi/thermal.c
View file @ 975a8e3e
......@@ -82,7 +82,7 @@ MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
static int acpi_thermal_add(struct acpi_device *device);
static int acpi_thermal_remove(struct acpi_device *device, int type);
static int acpi_thermal_resume(struct acpi_device *device, int state);
static int acpi_thermal_resume(struct acpi_device *device);
static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
......@@ -1353,7 +1353,7 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
return 0;
}
static int acpi_thermal_resume(struct acpi_device *device, int state)
static int acpi_thermal_resume(struct acpi_device *device)
{
struct acpi_thermal *tz = NULL;
int i;
......
drivers/acpi/video.c
View file @ 975a8e3e
......@@ -73,16 +73,14 @@ MODULE_LICENSE("GPL");
static int acpi_video_bus_add(struct acpi_device *device);
static int acpi_video_bus_remove(struct acpi_device *device, int type);
static int acpi_video_bus_match(struct acpi_device *device,
struct acpi_driver *driver);
static struct acpi_driver acpi_video_bus = {
.name = ACPI_VIDEO_DRIVER_NAME,
.class = ACPI_VIDEO_CLASS,
.ids = ACPI_VIDEO_HID,
.ops = {
.add = acpi_video_bus_add,
.remove = acpi_video_bus_remove,
.match = acpi_video_bus_match,
},
};
......@@ -1885,39 +1883,6 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
return 0;
}
static int
acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver)
{
acpi_handle h_dummy1;
acpi_handle h_dummy2;
acpi_handle h_dummy3;
if (!device || !driver)
return -EINVAL;
/* Since there is no HID, CID for ACPI Video drivers, we have
* to check well known required nodes for each feature we support.
*/
/* Does this device able to support video switching ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
return 0;
/* Does this device able to retrieve a video ROM ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
return 0;
/* Does this device able to configure which video head to be POSTed ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
return 0;
return -ENODEV;
}
static int __init acpi_video_init(void)
{
int result = 0;
......
include/acpi/acpi_bus.h
View file @ 975a8e3e
......@@ -91,13 +91,12 @@ typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
typedef int (*acpi_op_lock) (struct acpi_device * device, int type);
typedef int (*acpi_op_start) (struct acpi_device * device);
typedef int (*acpi_op_stop) (struct acpi_device * device, int type);
typedef int (*acpi_op_suspend) (struct acpi_device * device, int state);
typedef int (*acpi_op_resume) (struct acpi_device * device, int state);
typedef int (*acpi_op_suspend) (struct acpi_device * device, pm_message_t state);
typedef int (*acpi_op_resume) (struct acpi_device * device);
typedef int (*acpi_op_scan) (struct acpi_device * device);
typedef int (*acpi_op_bind) (struct acpi_device * device);
typedef int (*acpi_op_unbind) (struct acpi_device * device);
typedef int (*acpi_op_match) (struct acpi_device * device,
struct acpi_driver * driver);
typedef int (*acpi_op_shutdown) (struct acpi_device * device);
struct acpi_bus_ops {
u32 acpi_op_add:1;
......@@ -110,7 +109,7 @@ struct acpi_bus_ops {
u32 acpi_op_scan:1;
u32 acpi_op_bind:1;
u32 acpi_op_unbind:1;
u32 acpi_op_match:1;
u32 acpi_op_shutdown:1;
u32 reserved:21;
};
......@@ -125,16 +124,16 @@ struct acpi_device_ops {
acpi_op_scan scan;
acpi_op_bind bind;
acpi_op_unbind unbind;
acpi_op_match match;
acpi_op_shutdown shutdown;
};
struct acpi_driver {
struct list_head node;
char name[80];
char class[80];
atomic_t references;
char *ids; /* Supported Hardware IDs */
struct acpi_device_ops ops;
struct device_driver drv;
struct module *owner;
};
/*
......@@ -184,7 +183,7 @@ struct acpi_device_dir {
typedef char acpi_bus_id[5];
typedef unsigned long acpi_bus_address;
typedef char acpi_hardware_id[9];
typedef char acpi_hardware_id[15];
typedef char acpi_unique_id[9];
typedef char acpi_device_name[40];
typedef char acpi_device_class[20];
......@@ -295,11 +294,14 @@ struct acpi_device {
struct acpi_device_ops ops;
struct acpi_driver *driver;
void *driver_data;
struct kobject kobj;
struct device dev;
struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
};
#define acpi_driver_data(d) ((d)->driver_data)
#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
/*
* Events
......
include/acpi/acpi_drivers.h
View file @ 975a8e3e
......@@ -36,13 +36,14 @@
/* _HID definitions */
#define ACPI_POWER_HID "ACPI_PWR"
#define ACPI_POWER_HID "power_resource"
#define ACPI_PROCESSOR_HID "ACPI0007"
#define ACPI_SYSTEM_HID "ACPI_SYS"
#define ACPI_THERMAL_HID "ACPI_THM"
#define ACPI_BUTTON_HID_POWERF "ACPI_FPB"
#define ACPI_BUTTON_HID_SLEEPF "ACPI_FSB"
#define ACPI_SYSTEM_HID "acpi_system"
#define ACPI_THERMAL_HID "thermal"
#define ACPI_BUTTON_HID_POWERF "button_power"
#define ACPI_BUTTON_HID_SLEEPF "button_sleep"
#define ACPI_VIDEO_HID "video"
#define ACPI_BAY_HID "bay"
/* --------------------------------------------------------------------------
PCI
-------------------------------------------------------------------------- */
......
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