2009-07-29 04:45:54 +08:00
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/*
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* acpi/internal.h
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* For use by Linux/ACPI infrastructure, not drivers
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*
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* Copyright (c) 2009, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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2010-07-16 19:11:31 +08:00
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#ifndef _ACPI_INTERNAL_H_
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#define _ACPI_INTERNAL_H_
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2009-07-29 04:45:54 +08:00
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#define PREFIX "ACPI: "
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2009-03-14 02:08:26 +08:00
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2009-03-25 06:50:09 +08:00
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int init_acpi_device_notify(void);
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2009-03-25 06:49:43 +08:00
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int acpi_scan_init(void);
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2013-02-26 13:18:18 +08:00
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#ifdef CONFIG_ACPI_PCI_SLOT
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void acpi_pci_slot_init(void);
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#else
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static inline void acpi_pci_slot_init(void) { }
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#endif
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2013-01-30 21:27:33 +08:00
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void acpi_pci_root_init(void);
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2013-01-30 21:27:37 +08:00
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void acpi_pci_link_init(void);
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2013-02-26 13:18:18 +08:00
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void acpi_pci_root_hp_init(void);
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2013-01-30 21:27:40 +08:00
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void acpi_platform_init(void);
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2010-07-15 10:46:30 +08:00
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int acpi_sysfs_init(void);
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2013-01-17 17:59:33 +08:00
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void acpi_csrt_init(void);
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2013-02-09 06:52:39 +08:00
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#ifdef CONFIG_ACPI_CONTAINER
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void acpi_container_init(void);
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#else
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static inline void acpi_container_init(void) {}
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#endif
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2009-03-25 06:49:43 +08:00
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2010-07-15 10:46:15 +08:00
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#ifdef CONFIG_DEBUG_FS
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2011-05-26 18:26:23 +08:00
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extern struct dentry *acpi_debugfs_dir;
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2010-07-15 10:46:15 +08:00
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int acpi_debugfs_init(void);
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#else
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2011-05-26 18:26:23 +08:00
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static inline void acpi_debugfs_init(void) { return; }
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2010-07-15 10:46:15 +08:00
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#endif
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2013-01-17 21:11:05 +08:00
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/* --------------------------------------------------------------------------
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Device Node Initialization / Removal
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-------------------------------------------------------------------------- */
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#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \
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ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING)
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2013-01-24 19:49:49 +08:00
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int acpi_device_add(struct acpi_device *device,
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void (*release)(struct device *));
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2013-01-17 21:11:05 +08:00
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void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
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int type, unsigned long long sta);
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2013-01-24 19:49:49 +08:00
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void acpi_device_add_finalize(struct acpi_device *device);
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2013-01-17 21:11:05 +08:00
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void acpi_free_ids(struct acpi_device *device);
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2009-03-14 02:08:26 +08:00
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/* --------------------------------------------------------------------------
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Power Resource
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-------------------------------------------------------------------------- */
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2009-03-25 06:49:53 +08:00
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int acpi_power_init(void);
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2013-01-17 21:11:06 +08:00
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void acpi_power_resources_list_free(struct list_head *list);
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2013-01-17 21:11:07 +08:00
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int acpi_extract_power_resources(union acpi_object *package, unsigned int start,
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struct list_head *list);
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int acpi_add_power_resource(acpi_handle handle);
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ACPI / PM: Rework the handling of devices depending on power resources
Commit 0090def6 (ACPI: Add interface to register/unregister device
to/from power resources) made it possible to indicate to the ACPI
core that if the given device depends on any power resources, then
it should be resumed as soon as all of the power resources required
by it to transition to the D0 power state have been turned on.
Unfortunately, however, this was a mistake, because all devices
depending on power resources should be treated this way (i.e. they
should be resumed when all power resources required by their D0
state have been turned on) and for the majority of those devices
the ACPI core can figure out by itself which (physical) devices
depend on what power resources.
For this reason, replace the code added by commit 0090def6 with a
new, much more straightforward, mechanism that will be used
internally by the ACPI core and remove all references to that code
from kernel subsystems using ACPI.
For the cases when there are (physical) devices that should be
resumed whenever a not directly related ACPI device node goes into
D0 as a result of power resources configuration changes, like in
the SATA case, add two new routines, acpi_dev_pm_add_dependent()
and acpi_dev_pm_remove_dependent(), allowing subsystems to manage
such dependencies. Convert the SATA subsystem to use the new
functions accordingly.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-17 21:11:05 +08:00
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void acpi_power_add_remove_device(struct acpi_device *adev, bool add);
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ACPI / PM: Take unusual configurations of power resources into account
Commit d2e5f0c (ACPI / PCI: Rework the setup and cleanup of device
wakeup) moved the initial disabling of system wakeup for PCI devices
into a place where it can actually work and that exposed a hidden old
issue with crap^Wunusual system designs where the same power
resources are used for both wakeup power and device power control at
run time.
Namely, say there is one power resource such that the ACPI power
state D0 of a PCI device depends on that power resource (i.e. the
device is in D0 when that power resource is "on") and it is used
as a wakeup power resource for the same device. Then, calling
acpi_pci_sleep_wake(pci_dev, false) for the device in question will
cause the reference counter of that power resource to drop to 0,
which in turn will cause it to be turned off. As a result, the
device will go into D3cold at that point, although it should have
stayed in D0.
As it turns out, that happens to USB controllers on some laptops
and USB becomes unusable on those machines as a result, which is
a major regression from v3.8.
To fix this problem, (1) increment the reference counters of wakup
power resources during their initialization if they are "on"
initially, (2) prevent acpi_disable_wakeup_device_power() from
decrementing the reference counters of wakeup power resources that
were not enabled for wakeup power previously, and (3) prevent
acpi_enable_wakeup_device_power() from incrementing the reference
counters of wakeup power resources that already are enabled for
wakeup power.
In addition to that, if it is impossible to determine the initial
states of wakeup power resources, avoid enabling wakeup for devices
whose wakeup power depends on those power resources.
Reported-by: Dave Jones <davej@redhat.com>
Reported-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Tested-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-02-24 06:15:21 +08:00
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int acpi_power_wakeup_list_init(struct list_head *list, int *system_level);
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2009-03-14 02:08:26 +08:00
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int acpi_device_sleep_wake(struct acpi_device *dev,
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int enable, int sleep_state, int dev_state);
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2010-11-25 07:05:17 +08:00
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int acpi_power_get_inferred_state(struct acpi_device *device, int *state);
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2010-11-25 07:06:55 +08:00
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int acpi_power_on_resources(struct acpi_device *device, int state);
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2009-03-14 02:08:26 +08:00
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int acpi_power_transition(struct acpi_device *device, int state);
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2009-03-25 06:50:19 +08:00
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int acpi_wakeup_device_init(void);
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2009-12-21 03:19:09 +08:00
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void acpi_early_processor_set_pdc(void);
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2009-03-25 06:50:19 +08:00
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2009-03-14 02:08:26 +08:00
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/* --------------------------------------------------------------------------
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Embedded Controller
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-------------------------------------------------------------------------- */
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2010-07-16 19:11:31 +08:00
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struct acpi_ec {
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acpi_handle handle;
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unsigned long gpe;
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unsigned long command_addr;
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unsigned long data_addr;
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unsigned long global_lock;
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unsigned long flags;
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2012-10-23 07:29:27 +08:00
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struct mutex mutex;
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2010-07-16 19:11:31 +08:00
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wait_queue_head_t wait;
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struct list_head list;
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struct transaction *curr;
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2012-10-23 07:29:27 +08:00
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spinlock_t lock;
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2010-07-16 19:11:31 +08:00
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};
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extern struct acpi_ec *first_ec;
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2009-03-25 06:49:48 +08:00
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int acpi_ec_init(void);
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2009-03-14 02:08:26 +08:00
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int acpi_ec_ecdt_probe(void);
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int acpi_boot_ec_enable(void);
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2010-04-09 07:40:38 +08:00
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void acpi_ec_block_transactions(void);
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void acpi_ec_unblock_transactions(void);
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void acpi_ec_unblock_transactions_early(void);
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2009-03-14 02:08:26 +08:00
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/*--------------------------------------------------------------------------
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Suspend/Resume
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-------------------------------------------------------------------------- */
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extern int acpi_sleep_init(void);
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2009-03-25 06:50:14 +08:00
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#ifdef CONFIG_ACPI_SLEEP
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int acpi_sleep_proc_init(void);
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2011-01-07 08:43:44 +08:00
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int suspend_nvs_alloc(void);
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void suspend_nvs_free(void);
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int suspend_nvs_save(void);
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void suspend_nvs_restore(void);
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2009-03-25 06:50:14 +08:00
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#else
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static inline int acpi_sleep_proc_init(void) { return 0; }
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2011-01-07 08:43:44 +08:00
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static inline int suspend_nvs_alloc(void) { return 0; }
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static inline void suspend_nvs_free(void) {}
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2011-01-13 05:03:20 +08:00
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static inline int suspend_nvs_save(void) { return 0; }
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2011-01-07 08:43:44 +08:00
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static inline void suspend_nvs_restore(void) {}
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2009-03-25 06:50:14 +08:00
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#endif
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2010-07-16 19:11:31 +08:00
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2012-11-01 05:45:02 +08:00
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/*--------------------------------------------------------------------------
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Platform bus support
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-------------------------------------------------------------------------- */
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struct platform_device;
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2010-07-16 19:11:31 +08:00
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#endif /* _ACPI_INTERNAL_H_ */
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