2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* scan.c - support for transforming the ACPI namespace into individual objects
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/init.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
|
|
|
#include <linux/slab.h>
|
2006-07-12 06:08:00 +00:00
|
|
|
#include <linux/kernel.h>
|
2005-04-16 22:20:36 +00:00
|
|
|
#include <linux/acpi.h>
|
2008-06-13 16:54:24 +00:00
|
|
|
#include <linux/signal.h>
|
|
|
|
#include <linux/kthread.h>
|
2010-03-24 13:38:37 +00:00
|
|
|
#include <linux/dmi.h>
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
#include <acpi/acpi_drivers.h>
|
|
|
|
|
2009-03-13 18:08:26 +00:00
|
|
|
#include "internal.h"
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
#define _COMPONENT ACPI_BUS_COMPONENT
|
2007-02-13 03:42:12 +00:00
|
|
|
ACPI_MODULE_NAME("scan");
|
2005-04-16 22:20:36 +00:00
|
|
|
#define STRUCT_TO_INT(s) (*((int*)&s))
|
2005-08-05 04:44:28 +00:00
|
|
|
extern struct acpi_device *acpi_root;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
#define ACPI_BUS_CLASS "system_bus"
|
2007-07-23 12:43:51 +00:00
|
|
|
#define ACPI_BUS_HID "LNXSYBUS"
|
2005-04-16 22:20:36 +00:00
|
|
|
#define ACPI_BUS_DEVICE_NAME "System Bus"
|
|
|
|
|
2009-09-21 19:29:50 +00:00
|
|
|
#define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent)
|
|
|
|
|
2010-10-01 08:54:00 +00:00
|
|
|
static const char *dummy_hid = "device";
|
2010-10-01 08:53:59 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static LIST_HEAD(acpi_device_list);
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
static LIST_HEAD(acpi_bus_id_list);
|
2009-04-07 02:24:29 +00:00
|
|
|
DEFINE_MUTEX(acpi_device_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
LIST_HEAD(acpi_wakeup_device_list);
|
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
struct acpi_device_bus_id{
|
2007-01-04 07:03:18 +00:00
|
|
|
char bus_id[15];
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
unsigned int instance_no;
|
|
|
|
struct list_head node;
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
2007-07-23 12:43:51 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Creates hid/cid(s) string needed for modalias and uevent
|
|
|
|
* e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get:
|
|
|
|
* char *modalias: "acpi:IBM0001:ACPI0001"
|
|
|
|
*/
|
2007-08-14 21:22:35 +00:00
|
|
|
static int create_modalias(struct acpi_device *acpi_dev, char *modalias,
|
|
|
|
int size)
|
|
|
|
{
|
2007-07-23 12:43:51 +00:00
|
|
|
int len;
|
2008-03-20 08:40:32 +00:00
|
|
|
int count;
|
2009-09-21 19:35:19 +00:00
|
|
|
struct acpi_hardware_id *id;
|
2007-07-23 12:43:51 +00:00
|
|
|
|
2010-10-01 08:53:59 +00:00
|
|
|
if (list_empty(&acpi_dev->pnp.ids))
|
|
|
|
return 0;
|
|
|
|
|
2008-03-20 08:40:32 +00:00
|
|
|
len = snprintf(modalias, size, "acpi:");
|
2007-07-23 12:43:51 +00:00
|
|
|
size -= len;
|
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
list_for_each_entry(id, &acpi_dev->pnp.ids, list) {
|
|
|
|
count = snprintf(&modalias[len], size, "%s:", id->id);
|
2008-03-20 08:40:32 +00:00
|
|
|
if (count < 0 || count >= size)
|
|
|
|
return -EINVAL;
|
|
|
|
len += count;
|
|
|
|
size -= count;
|
|
|
|
}
|
|
|
|
|
2007-07-23 12:43:51 +00:00
|
|
|
modalias[len] = '\0';
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, char *buf) {
|
|
|
|
struct acpi_device *acpi_dev = to_acpi_device(dev);
|
|
|
|
int len;
|
|
|
|
|
|
|
|
/* Device has no HID and no CID or string is >1024 */
|
|
|
|
len = create_modalias(acpi_dev, buf, 1024);
|
|
|
|
if (len <= 0)
|
|
|
|
return 0;
|
|
|
|
buf[len++] = '\n';
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
|
|
|
|
|
2009-06-22 03:31:16 +00:00
|
|
|
static void acpi_bus_hot_remove_device(void *context)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2008-04-29 06:35:48 +00:00
|
|
|
struct acpi_device *device;
|
|
|
|
acpi_handle handle = context;
|
2005-04-16 22:20:36 +00:00
|
|
|
struct acpi_object_list arg_list;
|
|
|
|
union acpi_object arg;
|
|
|
|
acpi_status status = AE_OK;
|
|
|
|
|
2008-04-29 06:35:48 +00:00
|
|
|
if (acpi_bus_get_device(handle, &device))
|
2009-06-22 03:31:16 +00:00
|
|
|
return;
|
2008-04-29 06:35:48 +00:00
|
|
|
|
|
|
|
if (!device)
|
2009-06-22 03:31:16 +00:00
|
|
|
return;
|
2008-04-29 06:35:48 +00:00
|
|
|
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
ACPI: struct device - replace bus_id with dev_name(), dev_set_name()
This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".
To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.
We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.
We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-30 00:18:59 +00:00
|
|
|
"Hot-removing device %s...\n", dev_name(&device->dev)));
|
2008-04-29 06:35:48 +00:00
|
|
|
|
|
|
|
if (acpi_bus_trim(device, 1)) {
|
2008-09-28 06:51:56 +00:00
|
|
|
printk(KERN_ERR PREFIX
|
|
|
|
"Removing device failed\n");
|
2009-06-22 03:31:16 +00:00
|
|
|
return;
|
2008-04-29 06:35:48 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-04-29 06:35:48 +00:00
|
|
|
/* power off device */
|
|
|
|
status = acpi_evaluate_object(handle, "_PS3", NULL, NULL);
|
|
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
|
2008-09-28 06:51:56 +00:00
|
|
|
printk(KERN_WARNING PREFIX
|
|
|
|
"Power-off device failed\n");
|
2008-04-29 06:35:48 +00:00
|
|
|
|
|
|
|
if (device->flags.lockable) {
|
2005-04-16 22:20:36 +00:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
|
|
|
arg_list.count = 1;
|
|
|
|
arg_list.pointer = &arg;
|
|
|
|
arg.type = ACPI_TYPE_INTEGER;
|
|
|
|
arg.integer.value = 1;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* TBD: _EJD support.
|
|
|
|
*/
|
|
|
|
status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
|
2008-04-29 06:35:48 +00:00
|
|
|
if (ACPI_FAILURE(status))
|
2009-06-22 03:31:16 +00:00
|
|
|
printk(KERN_WARNING PREFIX
|
|
|
|
"Eject device failed\n");
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-06-22 03:31:16 +00:00
|
|
|
return;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
2006-12-07 12:56:38 +00:00
|
|
|
acpi_eject_store(struct device *d, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
int ret = count;
|
|
|
|
acpi_status status;
|
|
|
|
acpi_object_type type = 0;
|
2006-12-07 12:56:38 +00:00
|
|
|
struct acpi_device *acpi_device = to_acpi_device(d);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if ((!count) || (buf[0] != '1')) {
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
#ifndef FORCE_EJECT
|
2006-12-07 12:56:38 +00:00
|
|
|
if (acpi_device->driver == NULL) {
|
2005-04-16 22:20:36 +00:00
|
|
|
ret = -ENODEV;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
#endif
|
2006-12-07 12:56:38 +00:00
|
|
|
status = acpi_get_type(acpi_device->handle, &type);
|
|
|
|
if (ACPI_FAILURE(status) || (!acpi_device->flags.ejectable)) {
|
2005-04-16 22:20:36 +00:00
|
|
|
ret = -ENODEV;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
2009-06-22 03:31:16 +00:00
|
|
|
acpi_os_hotplug_execute(acpi_bus_hot_remove_device, acpi_device->handle);
|
2008-06-13 16:54:24 +00:00
|
|
|
err:
|
2005-04-16 22:20:36 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:38 +00:00
|
|
|
static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
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);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:35:09 +00:00
|
|
|
return sprintf(buf, "%s\n", acpi_device_hid(acpi_dev));
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
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;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
|
2009-05-14 14:31:37 +00:00
|
|
|
if (result)
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
goto end;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
result = sprintf(buf, "%s\n", (char*)path.pointer);
|
|
|
|
kfree(path.pointer);
|
2009-05-14 14:31:37 +00:00
|
|
|
end:
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
return result;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
static int acpi_device_setup_files(struct acpi_device *dev)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-07 12:56:38 +00:00
|
|
|
acpi_status status;
|
|
|
|
acpi_handle temp;
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
int result = 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
* Devices gotten from FADT don't have a "path" attribute
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
2009-05-14 14:31:37 +00:00
|
|
|
if (dev->handle) {
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
result = device_create_file(&dev->dev, &dev_attr_path);
|
2009-05-14 14:31:37 +00:00
|
|
|
if (result)
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
goto end;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2010-10-01 08:53:59 +00:00
|
|
|
if (!list_empty(&dev->pnp.ids)) {
|
|
|
|
result = device_create_file(&dev->dev, &dev_attr_hid);
|
|
|
|
if (result)
|
|
|
|
goto end;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2010-10-01 08:53:59 +00:00
|
|
|
result = device_create_file(&dev->dev, &dev_attr_modalias);
|
|
|
|
if (result)
|
|
|
|
goto end;
|
|
|
|
}
|
2007-07-23 12:43:51 +00:00
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
/*
|
|
|
|
* If device has _EJ0, 'eject' file is created that is used to trigger
|
|
|
|
* hot-removal function from userland.
|
|
|
|
*/
|
2006-12-07 12:56:38 +00:00
|
|
|
status = acpi_get_handle(dev->handle, "_EJ0", &temp);
|
|
|
|
if (ACPI_SUCCESS(status))
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
result = device_create_file(&dev->dev, &dev_attr_eject);
|
2009-05-14 14:31:37 +00:00
|
|
|
end:
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
return result;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:38 +00:00
|
|
|
static void acpi_device_remove_files(struct acpi_device *dev)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-07 12:56:38 +00:00
|
|
|
acpi_status status;
|
|
|
|
acpi_handle temp;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:38 +00:00
|
|
|
/*
|
|
|
|
* 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);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:35:29 +00:00
|
|
|
device_remove_file(&dev->dev, &dev_attr_modalias);
|
|
|
|
device_remove_file(&dev->dev, &dev_attr_hid);
|
2009-05-14 14:31:37 +00:00
|
|
|
if (dev->handle)
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
device_remove_file(&dev->dev, &dev_attr_path);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------
|
2006-12-07 12:56:16 +00:00
|
|
|
ACPI Bus operations
|
2005-04-16 22:20:36 +00:00
|
|
|
-------------------------------------------------------------------------- */
|
2007-07-23 12:43:51 +00:00
|
|
|
|
|
|
|
int acpi_match_device_ids(struct acpi_device *device,
|
|
|
|
const struct acpi_device_id *ids)
|
|
|
|
{
|
|
|
|
const struct acpi_device_id *id;
|
2009-09-21 19:35:19 +00:00
|
|
|
struct acpi_hardware_id *hwid;
|
2007-07-23 12:43:51 +00:00
|
|
|
|
2008-08-11 05:40:22 +00:00
|
|
|
/*
|
|
|
|
* If the device is not present, it is unnecessary to load device
|
|
|
|
* driver for it.
|
|
|
|
*/
|
|
|
|
if (!device->status.present)
|
|
|
|
return -ENODEV;
|
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
for (id = ids; id->id[0]; id++)
|
|
|
|
list_for_each_entry(hwid, &device->pnp.ids, list)
|
|
|
|
if (!strcmp((char *) id->id, hwid->id))
|
2007-07-23 12:43:51 +00:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
return -ENOENT;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(acpi_match_device_ids);
|
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
static void acpi_free_ids(struct acpi_device *device)
|
|
|
|
{
|
|
|
|
struct acpi_hardware_id *id, *tmp;
|
|
|
|
|
|
|
|
list_for_each_entry_safe(id, tmp, &device->pnp.ids, list) {
|
|
|
|
kfree(id->id);
|
|
|
|
kfree(id);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:31 +00:00
|
|
|
static void acpi_device_release(struct device *dev)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-07 12:56:31 +00:00
|
|
|
struct acpi_device *acpi_dev = to_acpi_device(dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
acpi_free_ids(acpi_dev);
|
2006-12-07 12:56:31 +00:00
|
|
|
kfree(acpi_dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2012-06-27 21:25:59 +00:00
|
|
|
#define ACPI_DEV_PM_CALLBACK(dev, callback, legacy_cb) \
|
|
|
|
({ \
|
|
|
|
struct acpi_device *__acpi_dev = to_acpi_device(dev); \
|
|
|
|
struct acpi_driver *__acpi_drv = __acpi_dev->driver; \
|
|
|
|
struct device_driver *__drv = dev->driver; \
|
|
|
|
int __ret; \
|
|
|
|
\
|
|
|
|
if (__acpi_drv && __acpi_drv->ops.legacy_cb) \
|
|
|
|
__ret = __acpi_drv->ops.legacy_cb(__acpi_dev); \
|
|
|
|
else if (__drv && __drv->pm && __drv->pm->callback) \
|
|
|
|
__ret = __drv->pm->callback(dev); \
|
|
|
|
else \
|
|
|
|
__ret = 0; \
|
|
|
|
\
|
|
|
|
__ret; \
|
|
|
|
})
|
|
|
|
|
|
|
|
static int acpi_pm_suspend(struct device *dev)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2012-06-27 21:25:59 +00:00
|
|
|
return ACPI_DEV_PM_CALLBACK(dev, suspend, suspend);
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2012-06-27 21:25:59 +00:00
|
|
|
static int acpi_pm_resume(struct device *dev)
|
|
|
|
{
|
|
|
|
return ACPI_DEV_PM_CALLBACK(dev, resume, resume);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2012-06-27 21:25:59 +00:00
|
|
|
static int acpi_pm_freeze(struct device *dev)
|
2006-12-07 12:56:16 +00:00
|
|
|
{
|
2012-06-27 21:25:59 +00:00
|
|
|
return ACPI_DEV_PM_CALLBACK(dev, freeze, suspend);
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2012-06-27 21:25:59 +00:00
|
|
|
static int acpi_pm_thaw(struct device *dev)
|
|
|
|
{
|
|
|
|
return ACPI_DEV_PM_CALLBACK(dev, thaw, resume);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2012-06-27 21:25:59 +00:00
|
|
|
static int acpi_pm_poweroff(struct device *dev)
|
|
|
|
{
|
|
|
|
return ACPI_DEV_PM_CALLBACK(dev, poweroff, suspend);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int acpi_pm_restore(struct device *dev)
|
|
|
|
{
|
|
|
|
return ACPI_DEV_PM_CALLBACK(dev, restore, resume);
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct dev_pm_ops acpi_bus_pm = {
|
|
|
|
.suspend = acpi_pm_suspend,
|
|
|
|
.resume = acpi_pm_resume,
|
|
|
|
.freeze = acpi_pm_freeze,
|
|
|
|
.thaw = acpi_pm_thaw,
|
|
|
|
.poweroff = acpi_pm_poweroff,
|
|
|
|
.restore = acpi_pm_restore,
|
|
|
|
};
|
2012-06-27 21:25:49 +00:00
|
|
|
|
2006-12-07 12:56:27 +00:00
|
|
|
static int acpi_bus_match(struct device *dev, struct device_driver *drv)
|
2006-12-07 12:56:16 +00:00
|
|
|
{
|
2006-12-07 12:56:27 +00:00
|
|
|
struct acpi_device *acpi_dev = to_acpi_device(dev);
|
|
|
|
struct acpi_driver *acpi_drv = to_acpi_driver(drv);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-07-23 12:43:51 +00:00
|
|
|
return !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
|
2006-12-07 12:56:27 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-08-14 13:15:12 +00:00
|
|
|
static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-07 12:56:27 +00:00
|
|
|
struct acpi_device *acpi_dev = to_acpi_device(dev);
|
2007-08-14 13:15:12 +00:00
|
|
|
int len;
|
2006-12-07 12:56:27 +00:00
|
|
|
|
2010-10-01 08:53:59 +00:00
|
|
|
if (list_empty(&acpi_dev->pnp.ids))
|
|
|
|
return 0;
|
|
|
|
|
2007-08-14 13:15:12 +00:00
|
|
|
if (add_uevent_var(env, "MODALIAS="))
|
|
|
|
return -ENOMEM;
|
|
|
|
len = create_modalias(acpi_dev, &env->buf[env->buflen - 1],
|
|
|
|
sizeof(env->buf) - env->buflen);
|
|
|
|
if (len >= (sizeof(env->buf) - env->buflen))
|
|
|
|
return -ENOMEM;
|
|
|
|
env->buflen += len;
|
2006-12-07 12:56:16 +00:00
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-03-30 17:48:13 +00:00
|
|
|
static void acpi_device_notify(acpi_handle handle, u32 event, void *data)
|
|
|
|
{
|
|
|
|
struct acpi_device *device = data;
|
|
|
|
|
|
|
|
device->driver->ops.notify(device, event);
|
|
|
|
}
|
|
|
|
|
|
|
|
static acpi_status acpi_device_notify_fixed(void *data)
|
|
|
|
{
|
|
|
|
struct acpi_device *device = data;
|
|
|
|
|
2009-08-31 22:32:20 +00:00
|
|
|
/* Fixed hardware devices have no handles */
|
|
|
|
acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device);
|
2009-03-30 17:48:13 +00:00
|
|
|
return AE_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int acpi_device_install_notify_handler(struct acpi_device *device)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
|
2009-09-21 19:29:15 +00:00
|
|
|
if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)
|
2009-03-30 17:48:13 +00:00
|
|
|
status =
|
|
|
|
acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
|
|
|
|
acpi_device_notify_fixed,
|
|
|
|
device);
|
2009-09-21 19:29:15 +00:00
|
|
|
else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)
|
2009-03-30 17:48:13 +00:00
|
|
|
status =
|
|
|
|
acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
|
|
|
|
acpi_device_notify_fixed,
|
|
|
|
device);
|
|
|
|
else
|
|
|
|
status = acpi_install_notify_handler(device->handle,
|
|
|
|
ACPI_DEVICE_NOTIFY,
|
|
|
|
acpi_device_notify,
|
|
|
|
device);
|
|
|
|
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void acpi_device_remove_notify_handler(struct acpi_device *device)
|
|
|
|
{
|
2009-09-21 19:29:15 +00:00
|
|
|
if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)
|
2009-03-30 17:48:13 +00:00
|
|
|
acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
|
|
|
|
acpi_device_notify_fixed);
|
2009-09-21 19:29:15 +00:00
|
|
|
else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)
|
2009-03-30 17:48:13 +00:00
|
|
|
acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
|
|
|
|
acpi_device_notify_fixed);
|
|
|
|
else
|
|
|
|
acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
|
|
|
|
acpi_device_notify);
|
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:27 +00:00
|
|
|
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)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-07 12:56:27 +00:00
|
|
|
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) {
|
2006-12-07 12:56:41 +00:00
|
|
|
if (acpi_dev->bus_ops.acpi_op_start)
|
|
|
|
acpi_start_single_object(acpi_dev);
|
2009-03-30 17:48:13 +00:00
|
|
|
|
|
|
|
if (acpi_drv->ops.notify) {
|
|
|
|
ret = acpi_device_install_notify_handler(acpi_dev);
|
|
|
|
if (ret) {
|
|
|
|
if (acpi_drv->ops.remove)
|
|
|
|
acpi_drv->ops.remove(acpi_dev,
|
|
|
|
acpi_dev->removal_type);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:27 +00:00
|
|
|
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;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:27 +00:00
|
|
|
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) {
|
2009-03-30 17:48:13 +00:00
|
|
|
if (acpi_drv->ops.notify)
|
|
|
|
acpi_device_remove_notify_handler(acpi_dev);
|
2006-12-07 12:56:27 +00:00
|
|
|
if (acpi_drv->ops.remove)
|
2006-12-07 12:56:46 +00:00
|
|
|
acpi_drv->ops.remove(acpi_dev, acpi_dev->removal_type);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2006-12-07 12:56:27 +00:00
|
|
|
acpi_dev->driver = NULL;
|
2008-09-22 21:37:34 +00:00
|
|
|
acpi_dev->driver_data = NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:27 +00:00
|
|
|
put_device(dev);
|
2006-12-07 12:56:16 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-08 07:28:35 +00:00
|
|
|
struct bus_type acpi_bus_type = {
|
2006-12-07 12:56:16 +00:00
|
|
|
.name = "acpi",
|
2006-12-07 12:56:27 +00:00
|
|
|
.match = acpi_bus_match,
|
|
|
|
.probe = acpi_device_probe,
|
|
|
|
.remove = acpi_device_remove,
|
|
|
|
.uevent = acpi_device_uevent,
|
2012-06-27 21:25:49 +00:00
|
|
|
.pm = &acpi_bus_pm,
|
2006-12-07 12:56:16 +00:00
|
|
|
};
|
|
|
|
|
2009-09-21 19:29:05 +00:00
|
|
|
static int acpi_device_register(struct acpi_device *device)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
int result;
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
struct acpi_device_bus_id *acpi_device_bus_id, *new_bus_id;
|
|
|
|
int found = 0;
|
2009-09-21 19:29:05 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
/*
|
|
|
|
* Linkage
|
|
|
|
* -------
|
|
|
|
* Link this device to its parent and siblings.
|
|
|
|
*/
|
|
|
|
INIT_LIST_HEAD(&device->children);
|
|
|
|
INIT_LIST_HEAD(&device->node);
|
|
|
|
INIT_LIST_HEAD(&device->wakeup_list);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
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;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_lock(&acpi_device_lock);
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
/*
|
|
|
|
* 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) {
|
2009-09-21 19:35:29 +00:00
|
|
|
if (!strcmp(acpi_device_bus_id->bus_id,
|
|
|
|
acpi_device_hid(device))) {
|
|
|
|
acpi_device_bus_id->instance_no++;
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
found = 1;
|
|
|
|
kfree(new_bus_id);
|
|
|
|
break;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2009-05-14 14:31:37 +00:00
|
|
|
if (!found) {
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
acpi_device_bus_id = new_bus_id;
|
2009-09-21 19:35:29 +00:00
|
|
|
strcpy(acpi_device_bus_id->bus_id, acpi_device_hid(device));
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
acpi_device_bus_id->instance_no = 0;
|
|
|
|
list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
ACPI: struct device - replace bus_id with dev_name(), dev_set_name()
This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".
To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.
We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.
We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-30 00:18:59 +00:00
|
|
|
dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-12-16 03:09:26 +00:00
|
|
|
if (device->parent)
|
2006-12-07 12:56:16 +00:00
|
|
|
list_add_tail(&device->node, &device->parent->children);
|
2008-12-16 03:09:26 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
if (device->wakeup.flags.valid)
|
|
|
|
list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_unlock(&acpi_device_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:31 +00:00
|
|
|
if (device->parent)
|
2009-09-21 19:29:05 +00:00
|
|
|
device->dev.parent = &device->parent->dev;
|
2006-12-07 12:56:31 +00:00
|
|
|
device->dev.bus = &acpi_bus_type;
|
|
|
|
device->dev.release = &acpi_device_release;
|
2009-05-14 14:31:32 +00:00
|
|
|
result = device_register(&device->dev);
|
2009-05-14 14:31:37 +00:00
|
|
|
if (result) {
|
2009-05-14 14:31:32 +00:00
|
|
|
dev_err(&device->dev, "Error registering device\n");
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
goto end;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
result = acpi_device_setup_files(device);
|
2009-05-14 14:31:37 +00:00
|
|
|
if (result)
|
ACPI: struct device - replace bus_id with dev_name(), dev_set_name()
This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".
To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.
We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.
We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-30 00:18:59 +00:00
|
|
|
printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
|
|
|
|
dev_name(&device->dev));
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:46 +00:00
|
|
|
device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
|
2005-04-16 22:20:36 +00:00
|
|
|
return 0;
|
2009-05-14 14:31:37 +00:00
|
|
|
end:
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_lock(&acpi_device_lock);
|
2008-12-16 03:09:26 +00:00
|
|
|
if (device->parent)
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
list_del(&device->node);
|
|
|
|
list_del(&device->wakeup_list);
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_unlock(&acpi_device_lock);
|
ACPI: use PNPID:instance_no as bus_id of ACPI device
Previously we used the device name in the DSDT, but would
crash upon encountering a duplicate. Also, exposing the
DSDT device name to the user in a patch isn't a good idea,
because it is arbitrary.
After some discussion, we finally decided to use
"PNPID:instance_no" as the bus_id of ACPI devices.
Two attributes for each device are added at the same time,
the full pathname in ACPI namespace and hardware_id if it has.
NOTE: acpi_bus_id_list is used to keep the information of PNPID
and instance number of the given PNPID. Loop the
acpi_bus_id_list to find the instance_no of the same PNPID
when register a device. If failed, i.e. we don't have a
node with this PNPID, allocate one and link it to this list.
NOTE: Now I don't take the memory free work in charge.
If necessary, I can add a reference count in
struct acpi_device_bus_id, and check the reference and
when unregister a device, i.e. memory is freed when
the reference count of a given PNPID is 0.
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08 09:23:43 +00:00
|
|
|
return result;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
static void acpi_device_unregister(struct acpi_device *device, int type)
|
|
|
|
{
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_lock(&acpi_device_lock);
|
2008-12-16 03:09:26 +00:00
|
|
|
if (device->parent)
|
2006-12-07 12:56:16 +00:00
|
|
|
list_del(&device->node);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
list_del(&device->wakeup_list);
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_unlock(&acpi_device_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
acpi_detach_data(device->handle, acpi_bus_data_handler);
|
2006-12-07 12:56:31 +00:00
|
|
|
|
2006-12-07 12:56:38 +00:00
|
|
|
acpi_device_remove_files(device);
|
2006-12-07 12:56:31 +00:00
|
|
|
device_unregister(&device->dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
/* --------------------------------------------------------------------------
|
|
|
|
Driver Management
|
|
|
|
-------------------------------------------------------------------------- */
|
2005-04-16 22:20:36 +00:00
|
|
|
/**
|
2006-01-06 06:31:00 +00:00
|
|
|
* acpi_bus_driver_init - add a device to a driver
|
|
|
|
* @device: the device to add and initialize
|
|
|
|
* @driver: driver for the device
|
|
|
|
*
|
2009-05-14 14:31:37 +00:00
|
|
|
* Used to initialize a device via its device driver. Called whenever a
|
2006-12-07 12:56:31 +00:00
|
|
|
* driver is bound to a device. Invokes the driver's add() ops.
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
|
|
|
static int
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
int result = 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (!device || !driver)
|
2006-06-27 04:41:40 +00:00
|
|
|
return -EINVAL;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (!driver->ops.add)
|
2006-06-27 04:41:40 +00:00
|
|
|
return -ENOSYS;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
result = driver->ops.add(device);
|
|
|
|
if (result) {
|
|
|
|
device->driver = NULL;
|
2008-09-22 21:37:34 +00:00
|
|
|
device->driver_data = NULL;
|
2006-06-27 04:41:40 +00:00
|
|
|
return result;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
device->driver = driver;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* TBD - Configuration Management: Assign resources to device based
|
|
|
|
* upon possible configuration and currently allocated resources.
|
|
|
|
*/
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
|
|
"Driver successfully bound to device\n"));
|
2006-06-27 04:41:40 +00:00
|
|
|
return 0;
|
2005-04-28 07:25:52 +00:00
|
|
|
}
|
|
|
|
|
2005-09-02 21:16:48 +00:00
|
|
|
static int acpi_start_single_object(struct acpi_device *device)
|
2005-04-28 07:25:52 +00:00
|
|
|
{
|
|
|
|
int result = 0;
|
|
|
|
struct acpi_driver *driver;
|
|
|
|
|
|
|
|
|
|
|
|
if (!(driver = device->driver))
|
2006-06-27 04:41:40 +00:00
|
|
|
return 0;
|
2005-04-28 07:25:52 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
if (driver->ops.start) {
|
|
|
|
result = driver->ops.start(device);
|
|
|
|
if (result && driver->ops.remove)
|
|
|
|
driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
|
|
|
|
}
|
|
|
|
|
2006-06-27 04:41:40 +00:00
|
|
|
return result;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
/**
|
|
|
|
* 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)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-07 12:56:31 +00:00
|
|
|
int ret;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
if (acpi_disabled)
|
|
|
|
return -ENODEV;
|
2006-12-07 12:56:31 +00:00
|
|
|
driver->drv.name = driver->name;
|
|
|
|
driver->drv.bus = &acpi_bus_type;
|
|
|
|
driver->drv.owner = driver->owner;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:31 +00:00
|
|
|
ret = driver_register(&driver->drv);
|
|
|
|
return ret;
|
2006-12-07 12:56:16 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
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)
|
|
|
|
{
|
2006-12-07 12:56:31 +00:00
|
|
|
driver_unregister(&driver->drv);
|
2006-12-07 12:56:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(acpi_bus_unregister_driver);
|
|
|
|
|
|
|
|
/* --------------------------------------------------------------------------
|
|
|
|
Device Enumeration
|
|
|
|
-------------------------------------------------------------------------- */
|
2009-09-21 19:29:35 +00:00
|
|
|
static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
int ret;
|
|
|
|
struct acpi_device *device;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Fixed hardware devices do not appear in the namespace and do not
|
|
|
|
* have handles, but we fabricate acpi_devices for them, so we have
|
|
|
|
* to deal with them specially.
|
|
|
|
*/
|
|
|
|
if (handle == NULL)
|
|
|
|
return acpi_root;
|
|
|
|
|
|
|
|
do {
|
|
|
|
status = acpi_get_parent(handle, &handle);
|
|
|
|
if (status == AE_NULL_ENTRY)
|
|
|
|
return NULL;
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return acpi_root;
|
|
|
|
|
|
|
|
ret = acpi_bus_get_device(handle, &device);
|
|
|
|
if (ret == 0)
|
|
|
|
return device;
|
|
|
|
} while (1);
|
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
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;
|
2008-02-14 12:40:34 +00:00
|
|
|
status = acpi_get_handle(ACPI_ROOT_OBJECT, obj->string.pointer,
|
|
|
|
ejd);
|
2006-12-07 12:56:16 +00:00
|
|
|
kfree(buffer.pointer);
|
|
|
|
}
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
|
|
|
|
|
2009-06-29 05:43:27 +00:00
|
|
|
void acpi_bus_data_handler(acpi_handle handle, void *context)
|
2006-12-07 12:56:16 +00:00
|
|
|
{
|
|
|
|
|
|
|
|
/* TBD */
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int acpi_bus_get_perf_flags(struct acpi_device *device)
|
|
|
|
{
|
|
|
|
device->performance.state = ACPI_STATE_UNKNOWN;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static acpi_status
|
2010-12-17 21:34:01 +00:00
|
|
|
acpi_bus_extract_wakeup_device_power_package(acpi_handle handle,
|
|
|
|
struct acpi_device_wakeup *wakeup)
|
2006-12-07 12:56:16 +00:00
|
|
|
{
|
2010-12-17 21:34:01 +00:00
|
|
|
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
|
|
union acpi_object *package = NULL;
|
2006-12-07 12:56:16 +00:00
|
|
|
union acpi_object *element = NULL;
|
2010-12-17 21:34:01 +00:00
|
|
|
acpi_status status;
|
|
|
|
int i = 0;
|
2006-12-07 12:56:16 +00:00
|
|
|
|
2010-12-17 21:34:01 +00:00
|
|
|
if (!wakeup)
|
2006-12-07 12:56:16 +00:00
|
|
|
return AE_BAD_PARAMETER;
|
|
|
|
|
2010-12-17 21:34:01 +00:00
|
|
|
/* _PRW */
|
|
|
|
status = acpi_evaluate_object(handle, "_PRW", NULL, &buffer);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRW"));
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
package = (union acpi_object *)buffer.pointer;
|
|
|
|
|
|
|
|
if (!package || (package->package.count < 2)) {
|
|
|
|
status = AE_BAD_DATA;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
element = &(package->package.elements[0]);
|
2010-12-17 21:34:01 +00:00
|
|
|
if (!element) {
|
|
|
|
status = AE_BAD_DATA;
|
|
|
|
goto out;
|
|
|
|
}
|
2006-12-07 12:56:16 +00:00
|
|
|
if (element->type == ACPI_TYPE_PACKAGE) {
|
|
|
|
if ((element->package.count < 2) ||
|
|
|
|
(element->package.elements[0].type !=
|
|
|
|
ACPI_TYPE_LOCAL_REFERENCE)
|
2010-12-17 21:34:01 +00:00
|
|
|
|| (element->package.elements[1].type != ACPI_TYPE_INTEGER)) {
|
|
|
|
status = AE_BAD_DATA;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
wakeup->gpe_device =
|
2006-12-07 12:56:16 +00:00
|
|
|
element->package.elements[0].reference.handle;
|
2010-12-17 21:34:01 +00:00
|
|
|
wakeup->gpe_number =
|
2006-12-07 12:56:16 +00:00
|
|
|
(u32) element->package.elements[1].integer.value;
|
|
|
|
} else if (element->type == ACPI_TYPE_INTEGER) {
|
2010-12-17 21:34:01 +00:00
|
|
|
wakeup->gpe_device = NULL;
|
|
|
|
wakeup->gpe_number = element->integer.value;
|
|
|
|
} else {
|
|
|
|
status = AE_BAD_DATA;
|
|
|
|
goto out;
|
|
|
|
}
|
2006-12-07 12:56:16 +00:00
|
|
|
|
|
|
|
element = &(package->package.elements[1]);
|
|
|
|
if (element->type != ACPI_TYPE_INTEGER) {
|
2010-12-17 21:34:01 +00:00
|
|
|
status = AE_BAD_DATA;
|
|
|
|
goto out;
|
2006-12-07 12:56:16 +00:00
|
|
|
}
|
2010-12-17 21:34:01 +00:00
|
|
|
wakeup->sleep_state = element->integer.value;
|
2006-12-07 12:56:16 +00:00
|
|
|
|
|
|
|
if ((package->package.count - 2) > ACPI_MAX_HANDLES) {
|
2010-12-17 21:34:01 +00:00
|
|
|
status = AE_NO_MEMORY;
|
|
|
|
goto out;
|
2006-12-07 12:56:16 +00:00
|
|
|
}
|
2010-12-17 21:34:01 +00:00
|
|
|
wakeup->resources.count = package->package.count - 2;
|
|
|
|
for (i = 0; i < wakeup->resources.count; i++) {
|
2006-12-07 12:56:16 +00:00
|
|
|
element = &(package->package.elements[i + 2]);
|
2010-12-17 21:34:01 +00:00
|
|
|
if (element->type != ACPI_TYPE_LOCAL_REFERENCE) {
|
|
|
|
status = AE_BAD_DATA;
|
|
|
|
goto out;
|
|
|
|
}
|
2006-12-07 12:56:16 +00:00
|
|
|
|
2010-12-17 21:34:01 +00:00
|
|
|
wakeup->resources.handles[i] = element->reference.handle;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2006-12-07 12:56:16 +00:00
|
|
|
|
2010-12-13 05:39:17 +00:00
|
|
|
acpi_setup_gpe_for_wake(handle, wakeup->gpe_device, wakeup->gpe_number);
|
ACPI / ACPICA: Do not execute _PRW methods during initialization
Currently, during initialization ACPICA walks the entire ACPI
namespace in search of any device objects with assciated _PRW
methods. All of the _PRW methods found are executed in the process
to extract the GPE information returned by them, so that the GPEs in
question can be marked as "able to wakeup" (more precisely, the
ACPI_GPE_CAN_WAKE flag is set for them). The only purpose of this
exercise is to avoid enabling the CAN_WAKE GPEs automatically, even
if there are _Lxx/_Exx methods associated with them. However, it is
both costly and unnecessary, because the host OS has to execute the
_PRW methods anyway to check which devices can wake up the system
from sleep states. Moreover, it then uses full information
returned by _PRW, including the GPE information, so it can take care
of disabling the GPEs if necessary.
Remove the code that walks the namespace and executes _PRW from
ACPICA and modify comments to reflect that change. Make
acpi_bus_set_run_wake_flags() disable GPEs for wakeup devices
so that they don't cause spurious wakeup events to be signaled.
This not only reduces the complexity of the ACPICA initialization
code, but in some cases it should reduce the kernel boot time as
well.
Unfortunately, for this purpose we need a new ACPICA function,
acpi_gpe_can_wake(), to be called by the host OS in order to disable
the GPEs that can wake up the system and were previously enabled by
acpi_ev_initialize_gpe_block() or acpi_ev_update_gpes() (such a GPE
should be disabled only once, because the initialization code enables
it only once, but it may be pointed to by _PRW for multiple devices
and that's why the additional function is necessary).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-07-07 22:43:36 +00:00
|
|
|
|
2010-12-17 21:34:01 +00:00
|
|
|
out:
|
|
|
|
kfree(buffer.pointer);
|
|
|
|
|
|
|
|
return status;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2010-02-17 22:41:49 +00:00
|
|
|
static void acpi_bus_set_run_wake_flags(struct acpi_device *device)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2007-07-23 12:43:51 +00:00
|
|
|
struct acpi_device_id button_device_ids[] = {
|
|
|
|
{"PNP0C0D", 0},
|
|
|
|
{"PNP0C0C", 0},
|
|
|
|
{"PNP0C0E", 0},
|
|
|
|
{"", 0},
|
|
|
|
};
|
2010-02-17 22:41:49 +00:00
|
|
|
acpi_status status;
|
|
|
|
acpi_event_status event_status;
|
|
|
|
|
2010-02-17 22:44:09 +00:00
|
|
|
device->wakeup.flags.notifier_present = 0;
|
2010-02-17 22:41:49 +00:00
|
|
|
|
|
|
|
/* Power button, Lid switch always enable wakeup */
|
|
|
|
if (!acpi_match_device_ids(device, button_device_ids)) {
|
|
|
|
device->wakeup.flags.run_wake = 1;
|
2011-01-06 22:34:22 +00:00
|
|
|
device_set_wakeup_capable(&device->dev, true);
|
2010-02-17 22:41:49 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2010-07-07 22:42:51 +00:00
|
|
|
status = acpi_get_gpe_status(device->wakeup.gpe_device,
|
|
|
|
device->wakeup.gpe_number,
|
|
|
|
&event_status);
|
2010-02-17 22:41:49 +00:00
|
|
|
if (status == AE_OK)
|
|
|
|
device->wakeup.flags.run_wake =
|
|
|
|
!!(event_status & ACPI_EVENT_FLAG_HANDLE);
|
|
|
|
}
|
|
|
|
|
2011-01-06 22:41:27 +00:00
|
|
|
static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
|
2010-02-17 22:41:49 +00:00
|
|
|
{
|
2011-01-06 22:41:27 +00:00
|
|
|
acpi_handle temp;
|
2010-02-17 22:41:49 +00:00
|
|
|
acpi_status status = 0;
|
|
|
|
int psw_error;
|
2007-07-23 12:43:51 +00:00
|
|
|
|
2011-01-06 22:41:27 +00:00
|
|
|
/* Presence of _PRW indicates wake capable */
|
|
|
|
status = acpi_get_handle(device->handle, "_PRW", &temp);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return;
|
|
|
|
|
2010-12-17 21:34:01 +00:00
|
|
|
status = acpi_bus_extract_wakeup_device_power_package(device->handle,
|
|
|
|
&device->wakeup);
|
2006-12-07 12:56:16 +00:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
ACPI_EXCEPTION((AE_INFO, status, "Extracting _PRW package"));
|
2011-01-06 22:41:27 +00:00
|
|
|
return;
|
2006-12-07 12:56:16 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
device->wakeup.flags.valid = 1;
|
2009-09-08 21:15:31 +00:00
|
|
|
device->wakeup.prepare_count = 0;
|
2010-02-17 22:41:49 +00:00
|
|
|
acpi_bus_set_run_wake_flags(device);
|
2008-03-19 05:26:54 +00:00
|
|
|
/* Call _PSW/_DSW object to disable its ability to wake the sleeping
|
|
|
|
* system for the ACPI device with the _PRW object.
|
|
|
|
* The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW.
|
|
|
|
* So it is necessary to call _DSW object first. Only when it is not
|
|
|
|
* present will the _PSW object used.
|
|
|
|
*/
|
2008-07-07 01:33:34 +00:00
|
|
|
psw_error = acpi_device_sleep_wake(device, 0, 0, 0);
|
|
|
|
if (psw_error)
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
|
|
"error in _DSW or _PSW evaluation\n"));
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2010-11-24 23:10:44 +00:00
|
|
|
static void acpi_bus_add_power_resource(acpi_handle handle);
|
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
static int acpi_bus_get_power_flags(struct acpi_device *device)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-12-07 12:56:16 +00:00
|
|
|
acpi_status status = 0;
|
|
|
|
acpi_handle handle = NULL;
|
|
|
|
u32 i = 0;
|
2006-03-28 22:04:00 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
/*
|
|
|
|
* 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;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
/*
|
|
|
|
* Enumerate supported power management states
|
|
|
|
*/
|
2012-04-23 01:03:49 +00:00
|
|
|
for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3_HOT; i++) {
|
2006-12-07 12:56:16 +00:00
|
|
|
struct acpi_device_power_state *ps = &device->power.states[i];
|
|
|
|
char object_name[5] = { '_', 'P', 'R', '0' + i, '\0' };
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
/* Evaluate "_PRx" to se if power resources are referenced */
|
|
|
|
acpi_evaluate_reference(device->handle, object_name, NULL,
|
|
|
|
&ps->resources);
|
|
|
|
if (ps->resources.count) {
|
2010-11-24 23:10:44 +00:00
|
|
|
int j;
|
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
device->power.flags.power_resources = 1;
|
2010-11-24 23:10:44 +00:00
|
|
|
for (j = 0; j < ps->resources.count; j++)
|
|
|
|
acpi_bus_add_power_resource(ps->resources.handles[j]);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
/* Evaluate "_PSx" to see if we can do explicit sets */
|
|
|
|
object_name[2] = 'S';
|
|
|
|
status = acpi_get_handle(device->handle, object_name, &handle);
|
2012-02-21 08:58:10 +00:00
|
|
|
if (ACPI_SUCCESS(status))
|
2006-12-07 12:56:16 +00:00
|
|
|
ps->flags.explicit_set = 1;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2012-04-23 01:03:49 +00:00
|
|
|
/*
|
|
|
|
* State is valid if there are means to put the device into it.
|
|
|
|
* D3hot is only valid if _PR3 present.
|
|
|
|
*/
|
|
|
|
if (ps->resources.count ||
|
|
|
|
(ps->flags.explicit_set && i < ACPI_STATE_D3_HOT))
|
2006-12-07 12:56:16 +00:00
|
|
|
ps->flags.valid = 1;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
ps->power = -1; /* Unknown - driver assigned */
|
|
|
|
ps->latency = -1; /* Unknown - driver assigned */
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
/* 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;
|
2006-07-09 21:22:28 +00:00
|
|
|
|
ACPI / PCI / PM: Fix device PM regression related to D3hot/D3cold
Commit 1cc0c998fdf2 ("ACPI: Fix D3hot v D3cold confusion") introduced a
bug in __acpi_bus_set_power() and changed the behavior of
acpi_pci_set_power_state() in such a way that it generally doesn't work
as expected if PCI_D3hot is passed to it as the second argument.
First off, if ACPI_STATE_D3 (equal to ACPI_STATE_D3_COLD) is passed to
__acpi_bus_set_power() and the explicit_set flag is set for the D3cold
state, the function will try to execute AML method called "_PS4", which
doesn't exist.
Fix this by adding a check to ensure that the name of the AML method
to execute for transitions to ACPI_STATE_D3_COLD is correct in
__acpi_bus_set_power(). Also make sure that the explicit_set flag
for ACPI_STATE_D3_COLD will be set if _PS3 is present and modify
acpi_power_transition() to avoid accessing power resources for
ACPI_STATE_D3_COLD, because they don't exist.
Second, if PCI_D3hot is passed to acpi_pci_set_power_state() as the
target state, the function will request a transition to
ACPI_STATE_D3_HOT instead of ACPI_STATE_D3. However,
ACPI_STATE_D3_HOT is now only marked as supported if the _PR3 AML
method is defined for the given device, which is rare. This causes
problems to happen on systems where devices were successfully put
into ACPI D3 by pci_set_power_state(PCI_D3hot) which doesn't work
now. In particular, some unused graphics adapters are not turned
off as a result.
To fix this issue restore the old behavior of
acpi_pci_set_power_state(), which is to request a transition to
ACPI_STATE_D3 (equal to ACPI_STATE_D3_COLD) if either PCI_D3hot or
PCI_D3cold is passed to it as the argument.
This approach is not ideal, because generally power should not
be removed from devices if PCI_D3hot is the target power state,
but since this behavior is relied on, we have no choice but to
restore it at the moment and spend more time on designing a
better solution in the future.
References: https://bugzilla.kernel.org/show_bug.cgi?id=43228
Reported-by: rocko <rockorequin@hotmail.com>
Reported-by: Cristian RodrÃguez <crrodriguez@opensuse.org>
Reported-and-tested-by: Peter <lekensteyn@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-17 22:39:35 +00:00
|
|
|
/* Set D3cold's explicit_set flag if _PS3 exists. */
|
|
|
|
if (device->power.states[ACPI_STATE_D3_HOT].flags.explicit_set)
|
|
|
|
device->power.states[ACPI_STATE_D3_COLD].flags.explicit_set = 1;
|
|
|
|
|
2010-11-24 23:08:36 +00:00
|
|
|
acpi_bus_init_power(device);
|
2006-07-09 21:22:28 +00:00
|
|
|
|
2006-12-07 12:56:16 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2006-07-09 21:22:28 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
static int acpi_bus_get_flags(struct acpi_device *device)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_status status = AE_OK;
|
|
|
|
acpi_handle temp = NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
|
|
|
/* Presence of _STA indicates 'dynamic_status' */
|
|
|
|
status = acpi_get_handle(device->handle, "_STA", &temp);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
device->flags.dynamic_status = 1;
|
|
|
|
|
|
|
|
/* Presence of _RMV indicates 'removable' */
|
|
|
|
status = acpi_get_handle(device->handle, "_RMV", &temp);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
device->flags.removable = 1;
|
|
|
|
|
|
|
|
/* Presence of _EJD|_EJ0 indicates 'ejectable' */
|
|
|
|
status = acpi_get_handle(device->handle, "_EJD", &temp);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
device->flags.ejectable = 1;
|
|
|
|
else {
|
|
|
|
status = acpi_get_handle(device->handle, "_EJ0", &temp);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
device->flags.ejectable = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Presence of _LCK indicates 'lockable' */
|
|
|
|
status = acpi_get_handle(device->handle, "_LCK", &temp);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
device->flags.lockable = 1;
|
|
|
|
|
2011-04-26 09:33:18 +00:00
|
|
|
/* Power resources cannot be power manageable. */
|
|
|
|
if (device->device_type == ACPI_BUS_TYPE_POWER)
|
|
|
|
return 0;
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/* Presence of _PS0|_PR0 indicates 'power manageable' */
|
|
|
|
status = acpi_get_handle(device->handle, "_PS0", &temp);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
status = acpi_get_handle(device->handle, "_PR0", &temp);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
device->flags.power_manageable = 1;
|
|
|
|
|
2008-02-03 15:06:17 +00:00
|
|
|
/* TBD: Performance management */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-06-27 04:41:40 +00:00
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-09-21 19:29:25 +00:00
|
|
|
static void acpi_device_get_busid(struct acpi_device *device)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
char bus_id[5] = { '?', 0 };
|
|
|
|
struct acpi_buffer buffer = { sizeof(bus_id), bus_id };
|
|
|
|
int i = 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Bus ID
|
|
|
|
* ------
|
|
|
|
* The device's Bus ID is simply the object name.
|
|
|
|
* TBD: Shouldn't this value be unique (within the ACPI namespace)?
|
|
|
|
*/
|
2009-09-21 19:29:50 +00:00
|
|
|
if (ACPI_IS_ROOT_DEVICE(device)) {
|
2005-04-16 22:20:36 +00:00
|
|
|
strcpy(device->pnp.bus_id, "ACPI");
|
2009-09-21 19:29:50 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (device->device_type) {
|
2005-04-16 22:20:36 +00:00
|
|
|
case ACPI_BUS_TYPE_POWER_BUTTON:
|
|
|
|
strcpy(device->pnp.bus_id, "PWRF");
|
|
|
|
break;
|
|
|
|
case ACPI_BUS_TYPE_SLEEP_BUTTON:
|
|
|
|
strcpy(device->pnp.bus_id, "SLPF");
|
|
|
|
break;
|
|
|
|
default:
|
2009-09-21 19:29:05 +00:00
|
|
|
acpi_get_name(device->handle, ACPI_SINGLE_NAME, &buffer);
|
2005-04-16 22:20:36 +00:00
|
|
|
/* Clean up trailing underscores (if any) */
|
|
|
|
for (i = 3; i > 1; i--) {
|
|
|
|
if (bus_id[i] == '_')
|
|
|
|
bus_id[i] = '\0';
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
strcpy(device->pnp.bus_id, bus_id);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-01-11 07:09:09 +00:00
|
|
|
/*
|
|
|
|
* acpi_bay_match - see if a device is an ejectable driver bay
|
|
|
|
*
|
|
|
|
* If an acpi object is ejectable and has one of the ACPI ATA methods defined,
|
|
|
|
* then we can safely call it an ejectable drive bay
|
|
|
|
*/
|
|
|
|
static int acpi_bay_match(struct acpi_device *device){
|
|
|
|
acpi_status status;
|
|
|
|
acpi_handle handle;
|
|
|
|
acpi_handle tmp;
|
|
|
|
acpi_handle phandle;
|
|
|
|
|
|
|
|
handle = device->handle;
|
|
|
|
|
|
|
|
status = acpi_get_handle(handle, "_EJ0", &tmp);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
if ((ACPI_SUCCESS(acpi_get_handle(handle, "_GTF", &tmp))) ||
|
|
|
|
(ACPI_SUCCESS(acpi_get_handle(handle, "_GTM", &tmp))) ||
|
|
|
|
(ACPI_SUCCESS(acpi_get_handle(handle, "_STM", &tmp))) ||
|
|
|
|
(ACPI_SUCCESS(acpi_get_handle(handle, "_SDD", &tmp))))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (acpi_get_parent(handle, &phandle))
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
if ((ACPI_SUCCESS(acpi_get_handle(phandle, "_GTF", &tmp))) ||
|
|
|
|
(ACPI_SUCCESS(acpi_get_handle(phandle, "_GTM", &tmp))) ||
|
|
|
|
(ACPI_SUCCESS(acpi_get_handle(phandle, "_STM", &tmp))) ||
|
|
|
|
(ACPI_SUCCESS(acpi_get_handle(phandle, "_SDD", &tmp))))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
2007-12-07 12:20:34 +00:00
|
|
|
/*
|
|
|
|
* acpi_dock_match - see if a device has a _DCK method
|
|
|
|
*/
|
|
|
|
static int acpi_dock_match(struct acpi_device *device)
|
|
|
|
{
|
|
|
|
acpi_handle tmp;
|
|
|
|
return acpi_get_handle(device->handle, "_DCK", &tmp);
|
|
|
|
}
|
|
|
|
|
2010-10-01 08:54:00 +00:00
|
|
|
const char *acpi_device_hid(struct acpi_device *device)
|
2009-06-29 05:39:29 +00:00
|
|
|
{
|
2009-09-21 19:35:19 +00:00
|
|
|
struct acpi_hardware_id *hid;
|
2009-06-29 05:39:29 +00:00
|
|
|
|
2010-10-01 08:53:59 +00:00
|
|
|
if (list_empty(&device->pnp.ids))
|
|
|
|
return dummy_hid;
|
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
hid = list_first_entry(&device->pnp.ids, struct acpi_hardware_id, list);
|
|
|
|
return hid->id;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(acpi_device_hid);
|
2009-06-29 05:39:29 +00:00
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
static void acpi_add_id(struct acpi_device *device, const char *dev_id)
|
|
|
|
{
|
|
|
|
struct acpi_hardware_id *id;
|
2009-06-29 05:39:29 +00:00
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
id = kmalloc(sizeof(*id), GFP_KERNEL);
|
|
|
|
if (!id)
|
|
|
|
return;
|
2009-06-29 05:39:29 +00:00
|
|
|
|
2011-08-06 09:32:56 +00:00
|
|
|
id->id = kstrdup(dev_id, GFP_KERNEL);
|
2009-09-21 19:35:19 +00:00
|
|
|
if (!id->id) {
|
|
|
|
kfree(id);
|
|
|
|
return;
|
2009-06-29 05:39:29 +00:00
|
|
|
}
|
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
list_add_tail(&id->list, &device->pnp.ids);
|
2009-06-29 05:39:29 +00:00
|
|
|
}
|
|
|
|
|
2010-03-24 13:38:37 +00:00
|
|
|
/*
|
|
|
|
* Old IBM workstations have a DSDT bug wherein the SMBus object
|
|
|
|
* lacks the SMBUS01 HID and the methods do not have the necessary "_"
|
|
|
|
* prefix. Work around this.
|
|
|
|
*/
|
|
|
|
static int acpi_ibm_smbus_match(struct acpi_device *device)
|
|
|
|
{
|
|
|
|
acpi_handle h_dummy;
|
|
|
|
struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
|
|
int result;
|
|
|
|
|
|
|
|
if (!dmi_name_in_vendors("IBM"))
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
/* Look for SMBS object */
|
|
|
|
result = acpi_get_name(device->handle, ACPI_SINGLE_NAME, &path);
|
|
|
|
if (result)
|
|
|
|
return result;
|
|
|
|
|
|
|
|
if (strcmp("SMBS", path.pointer)) {
|
|
|
|
result = -ENODEV;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Does it have the necessary (but misnamed) methods? */
|
|
|
|
result = -ENODEV;
|
|
|
|
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "SBI", &h_dummy)) &&
|
|
|
|
ACPI_SUCCESS(acpi_get_handle(device->handle, "SBR", &h_dummy)) &&
|
|
|
|
ACPI_SUCCESS(acpi_get_handle(device->handle, "SBW", &h_dummy)))
|
|
|
|
result = 0;
|
|
|
|
out:
|
|
|
|
kfree(path.pointer);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2009-09-21 19:29:25 +00:00
|
|
|
static void acpi_device_set_id(struct acpi_device *device)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_status status;
|
2009-09-21 19:35:40 +00:00
|
|
|
struct acpi_device_info *info;
|
|
|
|
struct acpica_device_id_list *cid_list;
|
2009-09-21 19:35:19 +00:00
|
|
|
int i;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:29:25 +00:00
|
|
|
switch (device->device_type) {
|
2005-04-16 22:20:36 +00:00
|
|
|
case ACPI_BUS_TYPE_DEVICE:
|
2009-09-21 19:29:50 +00:00
|
|
|
if (ACPI_IS_ROOT_DEVICE(device)) {
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_SYSTEM_HID);
|
2009-09-21 19:29:50 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2009-09-21 19:29:05 +00:00
|
|
|
status = acpi_get_object_info(device->handle, &info);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (ACPI_FAILURE(status)) {
|
2008-03-06 02:24:51 +00:00
|
|
|
printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (info->valid & ACPI_VALID_HID)
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, info->hardware_id.string);
|
|
|
|
if (info->valid & ACPI_VALID_CID) {
|
2009-06-29 05:39:29 +00:00
|
|
|
cid_list = &info->compatible_id_list;
|
2009-09-21 19:35:40 +00:00
|
|
|
for (i = 0; i < cid_list->count; i++)
|
|
|
|
acpi_add_id(device, cid_list->ids[i].string);
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
if (info->valid & ACPI_VALID_ADR) {
|
|
|
|
device->pnp.bus_address = info->address;
|
|
|
|
device->flags.bus_address = 1;
|
|
|
|
}
|
2006-12-07 12:57:10 +00:00
|
|
|
|
2009-10-02 15:03:12 +00:00
|
|
|
kfree(info);
|
|
|
|
|
2009-09-21 19:35:40 +00:00
|
|
|
/*
|
|
|
|
* Some devices don't reliably have _HIDs & _CIDs, so add
|
|
|
|
* synthetic HIDs to make sure drivers can find them.
|
|
|
|
*/
|
2008-08-01 15:37:55 +00:00
|
|
|
if (acpi_is_video_device(device))
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_VIDEO_HID);
|
2007-12-07 12:20:34 +00:00
|
|
|
else if (ACPI_SUCCESS(acpi_bay_match(device)))
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_BAY_HID);
|
2007-12-07 12:20:34 +00:00
|
|
|
else if (ACPI_SUCCESS(acpi_dock_match(device)))
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_DOCK_HID);
|
2010-03-24 13:38:37 +00:00
|
|
|
else if (!acpi_ibm_smbus_match(device))
|
|
|
|
acpi_add_id(device, ACPI_SMBUS_IBM_HID);
|
2010-03-24 16:44:33 +00:00
|
|
|
else if (!acpi_device_hid(device) &&
|
|
|
|
ACPI_IS_ROOT_DEVICE(device->parent)) {
|
|
|
|
acpi_add_id(device, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
|
|
|
|
strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);
|
|
|
|
strcpy(device->pnp.device_class, ACPI_BUS_CLASS);
|
|
|
|
}
|
2007-01-11 07:09:09 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
case ACPI_BUS_TYPE_POWER:
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_POWER_HID);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
case ACPI_BUS_TYPE_PROCESSOR:
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_PROCESSOR_OBJECT_HID);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
case ACPI_BUS_TYPE_THERMAL:
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_THERMAL_HID);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
case ACPI_BUS_TYPE_POWER_BUTTON:
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_BUTTON_HID_POWERF);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
case ACPI_BUS_TYPE_SLEEP_BUTTON:
|
2009-09-21 19:35:40 +00:00
|
|
|
acpi_add_id(device, ACPI_BUTTON_HID_SLEEPF);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-09-21 19:29:20 +00:00
|
|
|
static int acpi_device_set_context(struct acpi_device *device)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2009-09-21 19:29:20 +00:00
|
|
|
acpi_status status;
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* Context
|
|
|
|
* -------
|
|
|
|
* Attach this 'struct acpi_device' to the ACPI object. This makes
|
2009-09-21 19:29:20 +00:00
|
|
|
* resolutions from handle->device very efficient. Fixed hardware
|
|
|
|
* devices have no handles, so we skip them.
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
2009-09-21 19:29:20 +00:00
|
|
|
if (!device->handle)
|
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:29:20 +00:00
|
|
|
status = acpi_attach_data(device->handle,
|
|
|
|
acpi_bus_data_handler, device);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
printk(KERN_ERR PREFIX "Error attaching device data\n");
|
|
|
|
return -ENODEV;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
if (!dev)
|
2006-06-27 04:41:40 +00:00
|
|
|
return -EINVAL;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:46 +00:00
|
|
|
dev->removal_type = ACPI_BUS_REMOVAL_EJECT;
|
2006-12-07 12:56:31 +00:00
|
|
|
device_release_driver(&dev->dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (!rmdevice)
|
2006-06-27 04:41:40 +00:00
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-21 07:21:13 +00:00
|
|
|
/*
|
|
|
|
* unbind _ADR-Based Devices when hot removal
|
|
|
|
*/
|
2005-04-16 22:20:36 +00:00
|
|
|
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);
|
|
|
|
|
2006-06-27 04:41:40 +00:00
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-09-21 19:29:35 +00:00
|
|
|
static int acpi_add_single_object(struct acpi_device **child,
|
|
|
|
acpi_handle handle, int type,
|
2009-09-21 19:30:06 +00:00
|
|
|
unsigned long long sta,
|
2009-09-21 19:29:35 +00:00
|
|
|
struct acpi_bus_ops *ops)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2009-09-21 19:29:30 +00:00
|
|
|
int result;
|
|
|
|
struct acpi_device *device;
|
2009-09-21 19:28:54 +00:00
|
|
|
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-19 20:56:11 +00:00
|
|
|
device = kzalloc(sizeof(struct acpi_device), GFP_KERNEL);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (!device) {
|
2006-06-27 03:41:38 +00:00
|
|
|
printk(KERN_ERR PREFIX "Memory allocation error\n");
|
2006-06-27 04:41:40 +00:00
|
|
|
return -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-09-21 19:35:19 +00:00
|
|
|
INIT_LIST_HEAD(&device->pnp.ids);
|
2009-09-21 19:29:10 +00:00
|
|
|
device->device_type = type;
|
2005-04-16 22:20:36 +00:00
|
|
|
device->handle = handle;
|
2009-09-21 19:29:35 +00:00
|
|
|
device->parent = acpi_bus_get_parent(handle);
|
2006-12-07 12:56:41 +00:00
|
|
|
device->bus_ops = *ops; /* workround for not call .start */
|
2009-09-21 19:30:06 +00:00
|
|
|
STRUCT_TO_INT(device->status) = sta;
|
2006-12-07 12:56:41 +00:00
|
|
|
|
2009-09-21 19:29:25 +00:00
|
|
|
acpi_device_get_busid(device);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Flags
|
|
|
|
* -----
|
2009-09-21 19:30:06 +00:00
|
|
|
* Note that we only look for object handles -- cannot evaluate objects
|
|
|
|
* until we know the device is present and properly initialized.
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
|
|
|
result = acpi_bus_get_flags(device);
|
|
|
|
if (result)
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize Device
|
|
|
|
* -----------------
|
|
|
|
* TBD: Synch with Core's enumeration/initialization process.
|
|
|
|
*/
|
2009-09-21 19:29:25 +00:00
|
|
|
acpi_device_set_id(device);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Power Management
|
|
|
|
* ----------------
|
|
|
|
*/
|
|
|
|
if (device->flags.power_manageable) {
|
|
|
|
result = acpi_bus_get_power_flags(device);
|
|
|
|
if (result)
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
/*
|
2005-04-16 22:20:36 +00:00
|
|
|
* Wakeup device management
|
|
|
|
*-----------------------
|
|
|
|
*/
|
2011-01-06 22:41:27 +00:00
|
|
|
acpi_bus_get_wakeup_device_flags(device);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Performance Management
|
|
|
|
* ----------------------
|
|
|
|
*/
|
|
|
|
if (device->flags.performance_manageable) {
|
|
|
|
result = acpi_bus_get_perf_flags(device);
|
|
|
|
if (result)
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
2009-09-21 19:29:20 +00:00
|
|
|
if ((result = acpi_device_set_context(device)))
|
2009-09-05 17:33:23 +00:00
|
|
|
goto end;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:29:05 +00:00
|
|
|
result = acpi_device_register(device);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
2006-12-21 07:21:13 +00:00
|
|
|
* Bind _ADR-Based Devices when hot add
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
|
|
|
if (device->flags.bus_address) {
|
|
|
|
if (device->parent && device->parent->ops.bind)
|
|
|
|
device->parent->ops.bind(device);
|
|
|
|
}
|
|
|
|
|
2009-05-14 14:31:37 +00:00
|
|
|
end:
|
2009-09-21 19:28:54 +00:00
|
|
|
if (!result) {
|
|
|
|
acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
|
|
"Adding %s [%s] parent %s\n", dev_name(&device->dev),
|
|
|
|
(char *) buffer.pointer,
|
|
|
|
device->parent ? dev_name(&device->parent->dev) :
|
|
|
|
"(null)"));
|
|
|
|
kfree(buffer.pointer);
|
2005-04-16 22:20:36 +00:00
|
|
|
*child = device;
|
2009-09-21 19:28:54 +00:00
|
|
|
} else
|
2009-08-06 23:18:12 +00:00
|
|
|
acpi_device_release(&device->dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-06-27 04:41:40 +00:00
|
|
|
return result;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-09-21 19:30:06 +00:00
|
|
|
#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \
|
|
|
|
ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING)
|
|
|
|
|
2010-11-24 23:10:44 +00:00
|
|
|
static void acpi_bus_add_power_resource(acpi_handle handle)
|
|
|
|
{
|
|
|
|
struct acpi_bus_ops ops = {
|
|
|
|
.acpi_op_add = 1,
|
|
|
|
.acpi_op_start = 1,
|
|
|
|
};
|
|
|
|
struct acpi_device *device = NULL;
|
|
|
|
|
|
|
|
acpi_bus_get_device(handle, &device);
|
|
|
|
if (!device)
|
|
|
|
acpi_add_single_object(&device, handle, ACPI_BUS_TYPE_POWER,
|
|
|
|
ACPI_STA_DEFAULT, &ops);
|
|
|
|
}
|
|
|
|
|
2009-09-21 19:30:06 +00:00
|
|
|
static int acpi_bus_type_and_status(acpi_handle handle, int *type,
|
|
|
|
unsigned long long *sta)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2009-09-21 19:30:06 +00:00
|
|
|
acpi_status status;
|
|
|
|
acpi_object_type acpi_type;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:30:06 +00:00
|
|
|
status = acpi_get_type(handle, &acpi_type);
|
2009-09-21 19:29:56 +00:00
|
|
|
if (ACPI_FAILURE(status))
|
2009-09-21 19:30:06 +00:00
|
|
|
return -ENODEV;
|
2005-08-05 04:44:28 +00:00
|
|
|
|
2009-09-21 19:30:06 +00:00
|
|
|
switch (acpi_type) {
|
2009-09-21 19:29:56 +00:00
|
|
|
case ACPI_TYPE_ANY: /* for ACPI_ROOT_OBJECT */
|
|
|
|
case ACPI_TYPE_DEVICE:
|
2009-09-21 19:30:06 +00:00
|
|
|
*type = ACPI_BUS_TYPE_DEVICE;
|
|
|
|
status = acpi_bus_get_status_handle(handle, sta);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return -ENODEV;
|
2009-09-21 19:29:56 +00:00
|
|
|
break;
|
|
|
|
case ACPI_TYPE_PROCESSOR:
|
2009-09-21 19:30:06 +00:00
|
|
|
*type = ACPI_BUS_TYPE_PROCESSOR;
|
|
|
|
status = acpi_bus_get_status_handle(handle, sta);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return -ENODEV;
|
2009-09-21 19:29:56 +00:00
|
|
|
break;
|
|
|
|
case ACPI_TYPE_THERMAL:
|
2009-09-21 19:30:06 +00:00
|
|
|
*type = ACPI_BUS_TYPE_THERMAL;
|
|
|
|
*sta = ACPI_STA_DEFAULT;
|
2009-09-21 19:29:56 +00:00
|
|
|
break;
|
|
|
|
case ACPI_TYPE_POWER:
|
2009-09-21 19:30:06 +00:00
|
|
|
*type = ACPI_BUS_TYPE_POWER;
|
|
|
|
*sta = ACPI_STA_DEFAULT;
|
2009-09-21 19:29:56 +00:00
|
|
|
break;
|
|
|
|
default:
|
2009-09-21 19:30:06 +00:00
|
|
|
return -ENODEV;
|
2009-09-21 19:29:56 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:30:06 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl,
|
|
|
|
void *context, void **return_value)
|
|
|
|
{
|
|
|
|
struct acpi_bus_ops *ops = context;
|
|
|
|
int type;
|
|
|
|
unsigned long long sta;
|
2009-09-21 19:30:11 +00:00
|
|
|
struct acpi_device *device;
|
|
|
|
acpi_status status;
|
2009-09-21 19:30:06 +00:00
|
|
|
int result;
|
|
|
|
|
|
|
|
result = acpi_bus_type_and_status(handle, &type, &sta);
|
|
|
|
if (result)
|
|
|
|
return AE_OK;
|
|
|
|
|
|
|
|
if (!(sta & ACPI_STA_DEVICE_PRESENT) &&
|
2010-12-17 21:34:01 +00:00
|
|
|
!(sta & ACPI_STA_DEVICE_FUNCTIONING)) {
|
2011-01-06 22:40:00 +00:00
|
|
|
struct acpi_device_wakeup wakeup;
|
|
|
|
acpi_handle temp;
|
|
|
|
|
|
|
|
status = acpi_get_handle(handle, "_PRW", &temp);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
acpi_bus_extract_wakeup_device_power_package(handle,
|
|
|
|
&wakeup);
|
2009-09-21 19:30:06 +00:00
|
|
|
return AE_CTRL_DEPTH;
|
2010-12-17 21:34:01 +00:00
|
|
|
}
|
2009-09-21 19:30:06 +00:00
|
|
|
|
2009-09-21 19:30:11 +00:00
|
|
|
/*
|
|
|
|
* We may already have an acpi_device from a previous enumeration. If
|
|
|
|
* so, we needn't add it again, but we may still have to start it.
|
|
|
|
*/
|
|
|
|
device = NULL;
|
|
|
|
acpi_bus_get_device(handle, &device);
|
|
|
|
if (ops->acpi_op_add && !device)
|
|
|
|
acpi_add_single_object(&device, handle, type, sta, ops);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:30:11 +00:00
|
|
|
if (!device)
|
2009-09-21 19:29:56 +00:00
|
|
|
return AE_CTRL_DEPTH;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:29:56 +00:00
|
|
|
if (ops->acpi_op_start && !(ops->acpi_op_add)) {
|
|
|
|
status = acpi_start_single_object(device);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (ACPI_FAILURE(status))
|
2009-09-21 19:29:56 +00:00
|
|
|
return AE_CTRL_DEPTH;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:29:56 +00:00
|
|
|
if (!*return_value)
|
|
|
|
*return_value = device;
|
|
|
|
return AE_OK;
|
|
|
|
}
|
2005-04-28 07:25:52 +00:00
|
|
|
|
2009-09-21 19:29:56 +00:00
|
|
|
static int acpi_bus_scan(acpi_handle handle, struct acpi_bus_ops *ops,
|
|
|
|
struct acpi_device **child)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
void *device = NULL;
|
2005-04-28 07:25:52 +00:00
|
|
|
|
2009-09-21 19:29:56 +00:00
|
|
|
status = acpi_bus_check_add(handle, 0, ops, &device);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
|
|
acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
|
2009-11-13 02:06:08 +00:00
|
|
|
acpi_bus_check_add, NULL, ops, &device);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-09-21 19:29:56 +00:00
|
|
|
if (child)
|
|
|
|
*child = device;
|
2010-01-29 16:48:52 +00:00
|
|
|
|
|
|
|
if (device)
|
|
|
|
return 0;
|
|
|
|
else
|
|
|
|
return -ENODEV;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2010-01-29 16:48:52 +00:00
|
|
|
/*
|
|
|
|
* acpi_bus_add and acpi_bus_start
|
|
|
|
*
|
|
|
|
* scan a given ACPI tree and (probably recently hot-plugged)
|
|
|
|
* create and add or starts found devices.
|
|
|
|
*
|
|
|
|
* If no devices were found -ENODEV is returned which does not
|
|
|
|
* mean that this is a real error, there just have been no suitable
|
|
|
|
* ACPI objects in the table trunk from which the kernel could create
|
|
|
|
* a device and add/start an appropriate driver.
|
|
|
|
*/
|
|
|
|
|
2005-04-28 07:25:52 +00:00
|
|
|
int
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_bus_add(struct acpi_device **child,
|
|
|
|
struct acpi_device *parent, acpi_handle handle, int type)
|
2005-04-28 07:25:52 +00:00
|
|
|
{
|
|
|
|
struct acpi_bus_ops ops;
|
|
|
|
|
2006-12-07 12:56:41 +00:00
|
|
|
memset(&ops, 0, sizeof(ops));
|
|
|
|
ops.acpi_op_add = 1;
|
2005-04-28 07:25:52 +00:00
|
|
|
|
2010-01-29 16:48:52 +00:00
|
|
|
return acpi_bus_scan(handle, &ops, child);
|
2005-04-28 07:25:52 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(acpi_bus_add);
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
int acpi_bus_start(struct acpi_device *device)
|
2005-04-28 07:25:52 +00:00
|
|
|
{
|
|
|
|
struct acpi_bus_ops ops;
|
2010-09-15 22:30:43 +00:00
|
|
|
int result;
|
2005-04-28 07:25:52 +00:00
|
|
|
|
2010-01-29 16:48:51 +00:00
|
|
|
if (!device)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2009-09-21 19:29:40 +00:00
|
|
|
memset(&ops, 0, sizeof(ops));
|
|
|
|
ops.acpi_op_start = 1;
|
2005-04-28 07:25:52 +00:00
|
|
|
|
2010-09-15 22:30:43 +00:00
|
|
|
result = acpi_bus_scan(device->handle, &ops, NULL);
|
|
|
|
|
2010-12-13 05:36:15 +00:00
|
|
|
acpi_update_all_gpes();
|
2010-09-15 22:30:43 +00:00
|
|
|
|
|
|
|
return result;
|
2005-04-28 07:25:52 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(acpi_bus_start);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-02-24 01:56:01 +00:00
|
|
|
int acpi_bus_trim(struct acpi_device *start, int rmdevice)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_status status;
|
|
|
|
struct acpi_device *parent, *child;
|
|
|
|
acpi_handle phandle, chandle;
|
|
|
|
acpi_object_type type;
|
|
|
|
u32 level = 1;
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
parent = start;
|
2005-04-16 22:20:36 +00:00
|
|
|
phandle = start->handle;
|
|
|
|
child = chandle = NULL;
|
|
|
|
|
|
|
|
while ((level > 0) && parent && (!err)) {
|
|
|
|
status = acpi_get_next_object(ACPI_TYPE_ANY, phandle,
|
2005-08-05 04:44:28 +00:00
|
|
|
chandle, &chandle);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* If this scope is exhausted then move our way back up.
|
|
|
|
*/
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
level--;
|
|
|
|
chandle = phandle;
|
|
|
|
acpi_get_parent(phandle, &phandle);
|
|
|
|
child = parent;
|
|
|
|
parent = parent->parent;
|
|
|
|
|
|
|
|
if (level == 0)
|
|
|
|
err = acpi_bus_remove(child, rmdevice);
|
|
|
|
else
|
|
|
|
err = acpi_bus_remove(child, 1);
|
|
|
|
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = acpi_get_type(chandle, &type);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* If there is a device corresponding to chandle then
|
|
|
|
* parse it (depth-first).
|
|
|
|
*/
|
|
|
|
if (acpi_bus_get_device(chandle, &child) == 0) {
|
|
|
|
level++;
|
|
|
|
phandle = chandle;
|
|
|
|
chandle = NULL;
|
|
|
|
parent = child;
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
return err;
|
|
|
|
}
|
2006-02-24 01:56:01 +00:00
|
|
|
EXPORT_SYMBOL_GPL(acpi_bus_trim);
|
|
|
|
|
2009-09-21 19:28:59 +00:00
|
|
|
static int acpi_bus_scan_fixed(void)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
int result = 0;
|
|
|
|
struct acpi_device *device = NULL;
|
2006-12-07 12:56:41 +00:00
|
|
|
struct acpi_bus_ops ops;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:41 +00:00
|
|
|
memset(&ops, 0, sizeof(ops));
|
|
|
|
ops.acpi_op_add = 1;
|
|
|
|
ops.acpi_op_start = 1;
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* Enumerate all fixed-feature devices.
|
|
|
|
*/
|
2007-02-02 16:48:22 +00:00
|
|
|
if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) {
|
2009-09-21 19:29:35 +00:00
|
|
|
result = acpi_add_single_object(&device, NULL,
|
2006-12-07 12:56:41 +00:00
|
|
|
ACPI_BUS_TYPE_POWER_BUTTON,
|
2009-09-21 19:30:06 +00:00
|
|
|
ACPI_STA_DEFAULT,
|
2006-12-07 12:56:41 +00:00
|
|
|
&ops);
|
2012-05-09 23:08:43 +00:00
|
|
|
device_init_wakeup(&device->dev, true);
|
2005-04-28 07:25:52 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:22 +00:00
|
|
|
if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
|
2009-09-21 19:29:35 +00:00
|
|
|
result = acpi_add_single_object(&device, NULL,
|
2006-12-07 12:56:41 +00:00
|
|
|
ACPI_BUS_TYPE_SLEEP_BUTTON,
|
2009-09-21 19:30:06 +00:00
|
|
|
ACPI_STA_DEFAULT,
|
2006-12-07 12:56:41 +00:00
|
|
|
&ops);
|
2005-04-28 07:25:52 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-06-27 04:41:40 +00:00
|
|
|
return result;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-03-24 22:49:43 +00:00
|
|
|
int __init acpi_scan_init(void)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
int result;
|
2005-04-28 07:25:52 +00:00
|
|
|
struct acpi_bus_ops ops;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-07 12:56:41 +00:00
|
|
|
memset(&ops, 0, sizeof(ops));
|
|
|
|
ops.acpi_op_add = 1;
|
|
|
|
ops.acpi_op_start = 1;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-05-10 14:33:00 +00:00
|
|
|
result = bus_register(&acpi_bus_type);
|
|
|
|
if (result) {
|
|
|
|
/* We don't want to quit even if we failed to add suspend/resume */
|
|
|
|
printk(KERN_ERR PREFIX "Could not register bus type\n");
|
|
|
|
}
|
|
|
|
|
2010-11-24 23:10:02 +00:00
|
|
|
acpi_power_init();
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* Enumerate devices in the ACPI namespace.
|
|
|
|
*/
|
2009-09-21 19:29:56 +00:00
|
|
|
result = acpi_bus_scan(ACPI_ROOT_OBJECT, &ops, &acpi_root);
|
2008-01-01 19:12:55 +00:00
|
|
|
|
2006-12-07 12:56:41 +00:00
|
|
|
if (!result)
|
2009-09-21 19:29:45 +00:00
|
|
|
result = acpi_bus_scan_fixed();
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (result)
|
|
|
|
acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
|
2010-09-15 22:30:43 +00:00
|
|
|
else
|
2010-12-13 05:36:15 +00:00
|
|
|
acpi_update_all_gpes();
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-06-27 04:41:40 +00:00
|
|
|
return result;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|