Merge branch 'acpi-dev-pm'
* acpi-dev-pm: ACPI / PM: Allow attach/detach routines to change device power states ACPI / PM: Introduce os_accessible flag for power_state ACPI / PM: Add check preventing transitioning to non-D0 state from D3. ACPI / PM: Fix build problem when CONFIG_ACPI or CONFIG_PM is not set ACPI / PM: Fix build problem related to acpi_target_system_state() ACPI / PM: Provide ACPI PM callback routines for subsystems ACPI / PM: Move device PM functions related to sleep states ACPI / PM: Provide device PM functions operating on struct acpi_device ACPI / PM: Split device wakeup management routines ACPI / PM: Move runtime remote wakeup setup routine to device_pm.c ACPI / PM: Move device power state selection routine to device_pm.c ACPI / PM: Move routines for adding/removing device wakeup notifiers ACPI / PM: Fix device PM kernedoc comments and #ifdefs
This commit is contained in:
commit
acd844333c
8 changed files with 813 additions and 260 deletions
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@ -21,9 +21,10 @@ obj-y += acpi.o \
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acpi-y += osl.o utils.o reboot.o
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acpi-y += nvs.o
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# sleep related files
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# Power management related files
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acpi-y += wakeup.o
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acpi-y += sleep.o
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acpi-$(CONFIG_PM) += device_pm.o
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acpi-$(CONFIG_ACPI_SLEEP) += proc.o
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@ -257,7 +257,15 @@ static int __acpi_bus_get_power(struct acpi_device *device, int *state)
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}
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static int __acpi_bus_set_power(struct acpi_device *device, int state)
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/**
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* acpi_device_set_power - Set power state of an ACPI device.
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* @device: Device to set the power state of.
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* @state: New power state to set.
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*
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* Callers must ensure that the device is power manageable before using this
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* function.
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*/
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int acpi_device_set_power(struct acpi_device *device, int state)
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{
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int result = 0;
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acpi_status status = AE_OK;
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@ -298,6 +306,12 @@ static int __acpi_bus_set_power(struct acpi_device *device, int state)
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* a lower-powered state.
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*/
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if (state < device->power.state) {
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if (device->power.state >= ACPI_STATE_D3_HOT &&
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state != ACPI_STATE_D0) {
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printk(KERN_WARNING PREFIX
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"Cannot transition to non-D0 state from D3\n");
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return -ENODEV;
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}
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if (device->power.flags.power_resources) {
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result = acpi_power_transition(device, state);
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if (result)
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@ -341,6 +355,7 @@ static int __acpi_bus_set_power(struct acpi_device *device, int state)
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return result;
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}
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EXPORT_SYMBOL(acpi_device_set_power);
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int acpi_bus_set_power(acpi_handle handle, int state)
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@ -359,7 +374,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
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return -ENODEV;
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}
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return __acpi_bus_set_power(device, state);
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return acpi_device_set_power(device, state);
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}
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EXPORT_SYMBOL(acpi_bus_set_power);
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@ -402,7 +417,7 @@ int acpi_bus_update_power(acpi_handle handle, int *state_p)
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if (result)
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return result;
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result = __acpi_bus_set_power(device, state);
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result = acpi_device_set_power(device, state);
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if (!result && state_p)
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*state_p = state;
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668
drivers/acpi/device_pm.c
Normal file
668
drivers/acpi/device_pm.c
Normal file
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@ -0,0 +1,668 @@
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/*
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* drivers/acpi/device_pm.c - ACPI device power management routines.
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*
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* Copyright (C) 2012, Intel Corp.
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* Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/device.h>
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#include <linux/export.h>
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#include <linux/mutex.h>
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#include <linux/pm_qos.h>
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#include <linux/pm_runtime.h>
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#include <acpi/acpi.h>
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#include <acpi/acpi_bus.h>
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static DEFINE_MUTEX(acpi_pm_notifier_lock);
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/**
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* acpi_add_pm_notifier - Register PM notifier for given ACPI device.
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* @adev: ACPI device to add the notifier for.
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* @context: Context information to pass to the notifier routine.
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*
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* NOTE: @adev need not be a run-wake or wakeup device to be a valid source of
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* PM wakeup events. For example, wakeup events may be generated for bridges
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* if one of the devices below the bridge is signaling wakeup, even if the
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* bridge itself doesn't have a wakeup GPE associated with it.
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*/
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acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
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acpi_notify_handler handler, void *context)
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{
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acpi_status status = AE_ALREADY_EXISTS;
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mutex_lock(&acpi_pm_notifier_lock);
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if (adev->wakeup.flags.notifier_present)
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goto out;
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status = acpi_install_notify_handler(adev->handle,
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ACPI_SYSTEM_NOTIFY,
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handler, context);
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if (ACPI_FAILURE(status))
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goto out;
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adev->wakeup.flags.notifier_present = true;
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out:
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mutex_unlock(&acpi_pm_notifier_lock);
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return status;
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}
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/**
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* acpi_remove_pm_notifier - Unregister PM notifier from given ACPI device.
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* @adev: ACPI device to remove the notifier from.
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*/
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acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
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acpi_notify_handler handler)
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{
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acpi_status status = AE_BAD_PARAMETER;
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mutex_lock(&acpi_pm_notifier_lock);
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if (!adev->wakeup.flags.notifier_present)
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goto out;
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status = acpi_remove_notify_handler(adev->handle,
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ACPI_SYSTEM_NOTIFY,
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handler);
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if (ACPI_FAILURE(status))
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goto out;
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adev->wakeup.flags.notifier_present = false;
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out:
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mutex_unlock(&acpi_pm_notifier_lock);
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return status;
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}
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/**
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* acpi_device_power_state - Get preferred power state of ACPI device.
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* @dev: Device whose preferred target power state to return.
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* @adev: ACPI device node corresponding to @dev.
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* @target_state: System state to match the resultant device state.
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* @d_max_in: Deepest low-power state to take into consideration.
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* @d_min_p: Location to store the upper limit of the allowed states range.
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* Return value: Preferred power state of the device on success, -ENODEV
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* (if there's no 'struct acpi_device' for @dev) or -EINVAL on failure
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*
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* Find the lowest power (highest number) ACPI device power state that the
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* device can be in while the system is in the state represented by
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* @target_state. If @d_min_p is set, the highest power (lowest number) device
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* power state that @dev can be in for the given system sleep state is stored
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* at the location pointed to by it.
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*
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* Callers must ensure that @dev and @adev are valid pointers and that @adev
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* actually corresponds to @dev before using this function.
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*/
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int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
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u32 target_state, int d_max_in, int *d_min_p)
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{
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char acpi_method[] = "_SxD";
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unsigned long long d_min, d_max;
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bool wakeup = false;
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if (d_max_in < ACPI_STATE_D0 || d_max_in > ACPI_STATE_D3)
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return -EINVAL;
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if (d_max_in > ACPI_STATE_D3_HOT) {
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enum pm_qos_flags_status stat;
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stat = dev_pm_qos_flags(dev, PM_QOS_FLAG_NO_POWER_OFF);
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if (stat == PM_QOS_FLAGS_ALL)
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d_max_in = ACPI_STATE_D3_HOT;
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}
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acpi_method[2] = '0' + target_state;
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/*
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* If the sleep state is S0, the lowest limit from ACPI is D3,
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* but if the device has _S0W, we will use the value from _S0W
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* as the lowest limit from ACPI. Finally, we will constrain
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* the lowest limit with the specified one.
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*/
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d_min = ACPI_STATE_D0;
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d_max = ACPI_STATE_D3;
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/*
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* If present, _SxD methods return the minimum D-state (highest power
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* state) we can use for the corresponding S-states. Otherwise, the
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* minimum D-state is D0 (ACPI 3.x).
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*
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* NOTE: We rely on acpi_evaluate_integer() not clobbering the integer
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* provided -- that's our fault recovery, we ignore retval.
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*/
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if (target_state > ACPI_STATE_S0) {
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acpi_evaluate_integer(adev->handle, acpi_method, NULL, &d_min);
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wakeup = device_may_wakeup(dev) && adev->wakeup.flags.valid
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&& adev->wakeup.sleep_state >= target_state;
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} else if (dev_pm_qos_flags(dev, PM_QOS_FLAG_REMOTE_WAKEUP) !=
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PM_QOS_FLAGS_NONE) {
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wakeup = adev->wakeup.flags.valid;
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}
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/*
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* If _PRW says we can wake up the system from the target sleep state,
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* the D-state returned by _SxD is sufficient for that (we assume a
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* wakeup-aware driver if wake is set). Still, if _SxW exists
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* (ACPI 3.x), it should return the maximum (lowest power) D-state that
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* can wake the system. _S0W may be valid, too.
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*/
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if (wakeup) {
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acpi_status status;
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acpi_method[3] = 'W';
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status = acpi_evaluate_integer(adev->handle, acpi_method, NULL,
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&d_max);
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if (ACPI_FAILURE(status)) {
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if (target_state != ACPI_STATE_S0 ||
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status != AE_NOT_FOUND)
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d_max = d_min;
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} else if (d_max < d_min) {
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/* Warn the user of the broken DSDT */
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printk(KERN_WARNING "ACPI: Wrong value from %s\n",
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acpi_method);
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/* Sanitize it */
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d_min = d_max;
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}
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}
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if (d_max_in < d_min)
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return -EINVAL;
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if (d_min_p)
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*d_min_p = d_min;
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/* constrain d_max with specified lowest limit (max number) */
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if (d_max > d_max_in) {
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for (d_max = d_max_in; d_max > d_min; d_max--) {
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if (adev->power.states[d_max].flags.valid)
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break;
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}
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}
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return d_max;
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}
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EXPORT_SYMBOL_GPL(acpi_device_power_state);
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/**
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* acpi_pm_device_sleep_state - Get preferred power state of ACPI device.
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* @dev: Device whose preferred target power state to return.
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* @d_min_p: Location to store the upper limit of the allowed states range.
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* @d_max_in: Deepest low-power state to take into consideration.
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* Return value: Preferred power state of the device on success, -ENODEV
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* (if there's no 'struct acpi_device' for @dev) or -EINVAL on failure
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*
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* The caller must ensure that @dev is valid before using this function.
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*/
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int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p, int d_max_in)
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{
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acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
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struct acpi_device *adev;
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if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
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dev_dbg(dev, "ACPI handle without context in %s!\n", __func__);
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return -ENODEV;
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}
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return acpi_device_power_state(dev, adev, acpi_target_system_state(),
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d_max_in, d_min_p);
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}
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EXPORT_SYMBOL(acpi_pm_device_sleep_state);
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#ifdef CONFIG_PM_RUNTIME
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/**
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* acpi_wakeup_device - Wakeup notification handler for ACPI devices.
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* @handle: ACPI handle of the device the notification is for.
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* @event: Type of the signaled event.
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* @context: Device corresponding to @handle.
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*/
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static void acpi_wakeup_device(acpi_handle handle, u32 event, void *context)
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{
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struct device *dev = context;
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if (event == ACPI_NOTIFY_DEVICE_WAKE && dev) {
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pm_wakeup_event(dev, 0);
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pm_runtime_resume(dev);
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}
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||||
}
|
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|
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/**
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* __acpi_device_run_wake - Enable/disable runtime remote wakeup for device.
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* @adev: ACPI device to enable/disable the remote wakeup for.
|
||||
* @enable: Whether to enable or disable the wakeup functionality.
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||||
*
|
||||
* Enable/disable the GPE associated with @adev so that it can generate
|
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* wakeup signals for the device in response to external (remote) events and
|
||||
* enable/disable device wakeup power.
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||||
*
|
||||
* Callers must ensure that @adev is a valid ACPI device node before executing
|
||||
* this function.
|
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*/
|
||||
int __acpi_device_run_wake(struct acpi_device *adev, bool enable)
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{
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struct acpi_device_wakeup *wakeup = &adev->wakeup;
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||||
|
||||
if (enable) {
|
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acpi_status res;
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int error;
|
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|
||||
error = acpi_enable_wakeup_device_power(adev, ACPI_STATE_S0);
|
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if (error)
|
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return error;
|
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|
||||
res = acpi_enable_gpe(wakeup->gpe_device, wakeup->gpe_number);
|
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if (ACPI_FAILURE(res)) {
|
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acpi_disable_wakeup_device_power(adev);
|
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return -EIO;
|
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}
|
||||
} else {
|
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acpi_disable_gpe(wakeup->gpe_device, wakeup->gpe_number);
|
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acpi_disable_wakeup_device_power(adev);
|
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}
|
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return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* acpi_pm_device_run_wake - Enable/disable remote wakeup for given device.
|
||||
* @dev: Device to enable/disable the platform to wake up.
|
||||
* @enable: Whether to enable or disable the wakeup functionality.
|
||||
*/
|
||||
int acpi_pm_device_run_wake(struct device *phys_dev, bool enable)
|
||||
{
|
||||
struct acpi_device *adev;
|
||||
acpi_handle handle;
|
||||
|
||||
if (!device_run_wake(phys_dev))
|
||||
return -EINVAL;
|
||||
|
||||
handle = DEVICE_ACPI_HANDLE(phys_dev);
|
||||
if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
|
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dev_dbg(phys_dev, "ACPI handle without context in %s!\n",
|
||||
__func__);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return __acpi_device_run_wake(adev, enable);
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_pm_device_run_wake);
|
||||
#else
|
||||
static inline void acpi_wakeup_device(acpi_handle handle, u32 event,
|
||||
void *context) {}
|
||||
#endif /* CONFIG_PM_RUNTIME */
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
/**
|
||||
* __acpi_device_sleep_wake - Enable or disable device to wake up the system.
|
||||
* @dev: Device to enable/desible to wake up the system.
|
||||
* @target_state: System state the device is supposed to wake up from.
|
||||
* @enable: Whether to enable or disable @dev to wake up the system.
|
||||
*/
|
||||
int __acpi_device_sleep_wake(struct acpi_device *adev, u32 target_state,
|
||||
bool enable)
|
||||
{
|
||||
return enable ?
|
||||
acpi_enable_wakeup_device_power(adev, target_state) :
|
||||
acpi_disable_wakeup_device_power(adev);
|
||||
}
|
||||
|
||||
/**
|
||||
* acpi_pm_device_sleep_wake - Enable or disable device to wake up the system.
|
||||
* @dev: Device to enable/desible to wake up the system from sleep states.
|
||||
* @enable: Whether to enable or disable @dev to wake up the system.
|
||||
*/
|
||||
int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
|
||||
{
|
||||
acpi_handle handle;
|
||||
struct acpi_device *adev;
|
||||
int error;
|
||||
|
||||
if (!device_can_wakeup(dev))
|
||||
return -EINVAL;
|
||||
|
||||
handle = DEVICE_ACPI_HANDLE(dev);
|
||||
if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
|
||||
dev_dbg(dev, "ACPI handle without context in %s!\n", __func__);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
error = __acpi_device_sleep_wake(adev, acpi_target_system_state(),
|
||||
enable);
|
||||
if (!error)
|
||||
dev_info(dev, "System wakeup %s by ACPI\n",
|
||||
enable ? "enabled" : "disabled");
|
||||
|
||||
return error;
|
||||
}
|
||||
#endif /* CONFIG_PM_SLEEP */
|
||||
|
||||
/**
|
||||
* acpi_dev_pm_get_node - Get ACPI device node for the given physical device.
|
||||
* @dev: Device to get the ACPI node for.
|
||||
*/
|
||||
static struct acpi_device *acpi_dev_pm_get_node(struct device *dev)
|
||||
{
|
||||
acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
|
||||
struct acpi_device *adev;
|
||||
|
||||
return handle && ACPI_SUCCESS(acpi_bus_get_device(handle, &adev)) ?
|
||||
adev : NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* acpi_dev_pm_low_power - Put ACPI device into a low-power state.
|
||||
* @dev: Device to put into a low-power state.
|
||||
* @adev: ACPI device node corresponding to @dev.
|
||||
* @system_state: System state to choose the device state for.
|
||||
*/
|
||||
static int acpi_dev_pm_low_power(struct device *dev, struct acpi_device *adev,
|
||||
u32 system_state)
|
||||
{
|
||||
int power_state;
|
||||
|
||||
if (!acpi_device_power_manageable(adev))
|
||||
return 0;
|
||||
|
||||
power_state = acpi_device_power_state(dev, adev, system_state,
|
||||
ACPI_STATE_D3, NULL);
|
||||
if (power_state < ACPI_STATE_D0 || power_state > ACPI_STATE_D3)
|
||||
return -EIO;
|
||||
|
||||
return acpi_device_set_power(adev, power_state);
|
||||
}
|
||||
|
||||
/**
|
||||
* acpi_dev_pm_full_power - Put ACPI device into the full-power state.
|
||||
* @adev: ACPI device node to put into the full-power state.
|
||||
*/
|
||||
static int acpi_dev_pm_full_power(struct acpi_device *adev)
|
||||
{
|
||||
return acpi_device_power_manageable(adev) ?
|
||||
acpi_device_set_power(adev, ACPI_STATE_D0) : 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_RUNTIME
|
||||
/**
|
||||
* acpi_dev_runtime_suspend - Put device into a low-power state using ACPI.
|
||||
* @dev: Device to put into a low-power state.
|
||||
*
|
||||
* Put the given device into a runtime low-power state using the standard ACPI
|
||||
* mechanism. Set up remote wakeup if desired, choose the state to put the
|
||||
* device into (this checks if remote wakeup is expected to work too), and set
|
||||
* the power state of the device.
|
||||
*/
|
||||
int acpi_dev_runtime_suspend(struct device *dev)
|
||||
{
|
||||
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
|
||||
bool remote_wakeup;
|
||||
int error;
|
||||
|
||||
if (!adev)
|
||||
return 0;
|
||||
|
||||
remote_wakeup = dev_pm_qos_flags(dev, PM_QOS_FLAG_REMOTE_WAKEUP) >
|
||||
PM_QOS_FLAGS_NONE;
|
||||
error = __acpi_device_run_wake(adev, remote_wakeup);
|
||||
if (remote_wakeup && error)
|
||||
return -EAGAIN;
|
||||
|
||||
error = acpi_dev_pm_low_power(dev, adev, ACPI_STATE_S0);
|
||||
if (error)
|
||||
__acpi_device_run_wake(adev, false);
|
||||
|
||||
return error;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_dev_runtime_suspend);
|
||||
|
||||
/**
|
||||
* acpi_dev_runtime_resume - Put device into the full-power state using ACPI.
|
||||
* @dev: Device to put into the full-power state.
|
||||
*
|
||||
* Put the given device into the full-power state using the standard ACPI
|
||||
* mechanism at run time. Set the power state of the device to ACPI D0 and
|
||||
* disable remote wakeup.
|
||||
*/
|
||||
int acpi_dev_runtime_resume(struct device *dev)
|
||||
{
|
||||
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
|
||||
int error;
|
||||
|
||||
if (!adev)
|
||||
return 0;
|
||||
|
||||
error = acpi_dev_pm_full_power(adev);
|
||||
__acpi_device_run_wake(adev, false);
|
||||
return error;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_dev_runtime_resume);
|
||||
|
||||
/**
|
||||
* acpi_subsys_runtime_suspend - Suspend device using ACPI.
|
||||
* @dev: Device to suspend.
|
||||
*
|
||||
* Carry out the generic runtime suspend procedure for @dev and use ACPI to put
|
||||
* it into a runtime low-power state.
|
||||
*/
|
||||
int acpi_subsys_runtime_suspend(struct device *dev)
|
||||
{
|
||||
int ret = pm_generic_runtime_suspend(dev);
|
||||
return ret ? ret : acpi_dev_runtime_suspend(dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_subsys_runtime_suspend);
|
||||
|
||||
/**
|
||||
* acpi_subsys_runtime_resume - Resume device using ACPI.
|
||||
* @dev: Device to Resume.
|
||||
*
|
||||
* Use ACPI to put the given device into the full-power state and carry out the
|
||||
* generic runtime resume procedure for it.
|
||||
*/
|
||||
int acpi_subsys_runtime_resume(struct device *dev)
|
||||
{
|
||||
int ret = acpi_dev_runtime_resume(dev);
|
||||
return ret ? ret : pm_generic_runtime_resume(dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_subsys_runtime_resume);
|
||||
#endif /* CONFIG_PM_RUNTIME */
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
/**
|
||||
* acpi_dev_suspend_late - Put device into a low-power state using ACPI.
|
||||
* @dev: Device to put into a low-power state.
|
||||
*
|
||||
* Put the given device into a low-power state during system transition to a
|
||||
* sleep state using the standard ACPI mechanism. Set up system wakeup if
|
||||
* desired, choose the state to put the device into (this checks if system
|
||||
* wakeup is expected to work too), and set the power state of the device.
|
||||
*/
|
||||
int acpi_dev_suspend_late(struct device *dev)
|
||||
{
|
||||
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
|
||||
u32 target_state;
|
||||
bool wakeup;
|
||||
int error;
|
||||
|
||||
if (!adev)
|
||||
return 0;
|
||||
|
||||
target_state = acpi_target_system_state();
|
||||
wakeup = device_may_wakeup(dev);
|
||||
error = __acpi_device_sleep_wake(adev, target_state, wakeup);
|
||||
if (wakeup && error)
|
||||
return error;
|
||||
|
||||
error = acpi_dev_pm_low_power(dev, adev, target_state);
|
||||
if (error)
|
||||
__acpi_device_sleep_wake(adev, ACPI_STATE_UNKNOWN, false);
|
||||
|
||||
return error;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_dev_suspend_late);
|
||||
|
||||
/**
|
||||
* acpi_dev_resume_early - Put device into the full-power state using ACPI.
|
||||
* @dev: Device to put into the full-power state.
|
||||
*
|
||||
* Put the given device into the full-power state using the standard ACPI
|
||||
* mechanism during system transition to the working state. Set the power
|
||||
* state of the device to ACPI D0 and disable remote wakeup.
|
||||
*/
|
||||
int acpi_dev_resume_early(struct device *dev)
|
||||
{
|
||||
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
|
||||
int error;
|
||||
|
||||
if (!adev)
|
||||
return 0;
|
||||
|
||||
error = acpi_dev_pm_full_power(adev);
|
||||
__acpi_device_sleep_wake(adev, ACPI_STATE_UNKNOWN, false);
|
||||
return error;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_dev_resume_early);
|
||||
|
||||
/**
|
||||
* acpi_subsys_prepare - Prepare device for system transition to a sleep state.
|
||||
* @dev: Device to prepare.
|
||||
*/
|
||||
int acpi_subsys_prepare(struct device *dev)
|
||||
{
|
||||
/*
|
||||
* Follow PCI and resume devices suspended at run time before running
|
||||
* their system suspend callbacks.
|
||||
*/
|
||||
pm_runtime_resume(dev);
|
||||
return pm_generic_prepare(dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_subsys_prepare);
|
||||
|
||||
/**
|
||||
* acpi_subsys_suspend_late - Suspend device using ACPI.
|
||||
* @dev: Device to suspend.
|
||||
*
|
||||
* Carry out the generic late suspend procedure for @dev and use ACPI to put
|
||||
* it into a low-power state during system transition into a sleep state.
|
||||
*/
|
||||
int acpi_subsys_suspend_late(struct device *dev)
|
||||
{
|
||||
int ret = pm_generic_suspend_late(dev);
|
||||
return ret ? ret : acpi_dev_suspend_late(dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_subsys_suspend_late);
|
||||
|
||||
/**
|
||||
* acpi_subsys_resume_early - Resume device using ACPI.
|
||||
* @dev: Device to Resume.
|
||||
*
|
||||
* Use ACPI to put the given device into the full-power state and carry out the
|
||||
* generic early resume procedure for it during system transition into the
|
||||
* working state.
|
||||
*/
|
||||
int acpi_subsys_resume_early(struct device *dev)
|
||||
{
|
||||
int ret = acpi_dev_resume_early(dev);
|
||||
return ret ? ret : pm_generic_resume_early(dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_subsys_resume_early);
|
||||
#endif /* CONFIG_PM_SLEEP */
|
||||
|
||||
static struct dev_pm_domain acpi_general_pm_domain = {
|
||||
.ops = {
|
||||
#ifdef CONFIG_PM_RUNTIME
|
||||
.runtime_suspend = acpi_subsys_runtime_suspend,
|
||||
.runtime_resume = acpi_subsys_runtime_resume,
|
||||
.runtime_idle = pm_generic_runtime_idle,
|
||||
#endif
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
.prepare = acpi_subsys_prepare,
|
||||
.suspend_late = acpi_subsys_suspend_late,
|
||||
.resume_early = acpi_subsys_resume_early,
|
||||
.poweroff_late = acpi_subsys_suspend_late,
|
||||
.restore_early = acpi_subsys_resume_early,
|
||||
#endif
|
||||
},
|
||||
};
|
||||
|
||||
/**
|
||||
* acpi_dev_pm_attach - Prepare device for ACPI power management.
|
||||
* @dev: Device to prepare.
|
||||
* @power_on: Whether or not to power on the device.
|
||||
*
|
||||
* If @dev has a valid ACPI handle that has a valid struct acpi_device object
|
||||
* attached to it, install a wakeup notification handler for the device and
|
||||
* add it to the general ACPI PM domain. If @power_on is set, the device will
|
||||
* be put into the ACPI D0 state before the function returns.
|
||||
*
|
||||
* This assumes that the @dev's bus type uses generic power management callbacks
|
||||
* (or doesn't use any power management callbacks at all).
|
||||
*
|
||||
* Callers must ensure proper synchronization of this function with power
|
||||
* management callbacks.
|
||||
*/
|
||||
int acpi_dev_pm_attach(struct device *dev, bool power_on)
|
||||
{
|
||||
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
|
||||
|
||||
if (!adev)
|
||||
return -ENODEV;
|
||||
|
||||
if (dev->pm_domain)
|
||||
return -EEXIST;
|
||||
|
||||
acpi_add_pm_notifier(adev, acpi_wakeup_device, dev);
|
||||
dev->pm_domain = &acpi_general_pm_domain;
|
||||
if (power_on) {
|
||||
acpi_dev_pm_full_power(adev);
|
||||
__acpi_device_run_wake(adev, false);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_dev_pm_attach);
|
||||
|
||||
/**
|
||||
* acpi_dev_pm_detach - Remove ACPI power management from the device.
|
||||
* @dev: Device to take care of.
|
||||
* @power_off: Whether or not to try to remove power from the device.
|
||||
*
|
||||
* Remove the device from the general ACPI PM domain and remove its wakeup
|
||||
* notifier. If @power_off is set, additionally remove power from the device if
|
||||
* possible.
|
||||
*
|
||||
* Callers must ensure proper synchronization of this function with power
|
||||
* management callbacks.
|
||||
*/
|
||||
void acpi_dev_pm_detach(struct device *dev, bool power_off)
|
||||
{
|
||||
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
|
||||
|
||||
if (adev && dev->pm_domain == &acpi_general_pm_domain) {
|
||||
dev->pm_domain = NULL;
|
||||
acpi_remove_pm_notifier(adev, acpi_wakeup_device);
|
||||
if (power_off) {
|
||||
/*
|
||||
* If the device's PM QoS resume latency limit or flags
|
||||
* have been exposed to user space, they have to be
|
||||
* hidden at this point, so that they don't affect the
|
||||
* choice of the low-power state to put the device into.
|
||||
*/
|
||||
dev_pm_qos_hide_latency_limit(dev);
|
||||
dev_pm_qos_hide_flags(dev);
|
||||
__acpi_device_run_wake(adev, false);
|
||||
acpi_dev_pm_low_power(dev, adev, ACPI_STATE_S0);
|
||||
}
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(acpi_dev_pm_detach);
|
|
@ -965,8 +965,10 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
|
|||
* D3hot is only valid if _PR3 present.
|
||||
*/
|
||||
if (ps->resources.count ||
|
||||
(ps->flags.explicit_set && i < ACPI_STATE_D3_HOT))
|
||||
(ps->flags.explicit_set && i < ACPI_STATE_D3_HOT)) {
|
||||
ps->flags.valid = 1;
|
||||
ps->flags.os_accessible = 1;
|
||||
}
|
||||
|
||||
ps->power = -1; /* Unknown - driver assigned */
|
||||
ps->latency = -1; /* Unknown - driver assigned */
|
||||
|
@ -982,6 +984,11 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
|
|||
if (device->power.states[ACPI_STATE_D3_HOT].flags.explicit_set)
|
||||
device->power.states[ACPI_STATE_D3_COLD].flags.explicit_set = 1;
|
||||
|
||||
/* Presence of _PS3 or _PRx means we can put the device into D3 cold */
|
||||
if (device->power.states[ACPI_STATE_D3_HOT].flags.explicit_set ||
|
||||
device->power.flags.power_resources)
|
||||
device->power.states[ACPI_STATE_D3_COLD].flags.os_accessible = 1;
|
||||
|
||||
acpi_bus_init_power(device);
|
||||
|
||||
return 0;
|
||||
|
|
|
@ -18,8 +18,6 @@
|
|||
#include <linux/reboot.h>
|
||||
#include <linux/acpi.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
#include <linux/pm_qos.h>
|
||||
|
||||
#include <asm/io.h>
|
||||
|
||||
|
@ -82,6 +80,12 @@ static int acpi_sleep_prepare(u32 acpi_state)
|
|||
|
||||
#ifdef CONFIG_ACPI_SLEEP
|
||||
static u32 acpi_target_sleep_state = ACPI_STATE_S0;
|
||||
|
||||
u32 acpi_target_system_state(void)
|
||||
{
|
||||
return acpi_target_sleep_state;
|
||||
}
|
||||
|
||||
static bool pwr_btn_event_pending;
|
||||
|
||||
/*
|
||||
|
@ -682,189 +686,6 @@ int acpi_suspend(u32 acpi_state)
|
|||
return -EINVAL;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
/**
|
||||
* acpi_pm_device_sleep_state - return preferred power state of ACPI device
|
||||
* in the system sleep state given by %acpi_target_sleep_state
|
||||
* @dev: device to examine; its driver model wakeup flags control
|
||||
* whether it should be able to wake up the system
|
||||
* @d_min_p: used to store the upper limit of allowed states range
|
||||
* @d_max_in: specify the lowest allowed states
|
||||
* Return value: preferred power state of the device on success, -ENODEV
|
||||
* (ie. if there's no 'struct acpi_device' for @dev) or -EINVAL on failure
|
||||
*
|
||||
* Find the lowest power (highest number) ACPI device power state that
|
||||
* device @dev can be in while the system is in the sleep state represented
|
||||
* by %acpi_target_sleep_state. If @wake is nonzero, the device should be
|
||||
* able to wake up the system from this sleep state. If @d_min_p is set,
|
||||
* the highest power (lowest number) device power state of @dev allowed
|
||||
* in this system sleep state is stored at the location pointed to by it.
|
||||
*
|
||||
* The caller must ensure that @dev is valid before using this function.
|
||||
* The caller is also responsible for figuring out if the device is
|
||||
* supposed to be able to wake up the system and passing this information
|
||||
* via @wake.
|
||||
*/
|
||||
|
||||
int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p, int d_max_in)
|
||||
{
|
||||
acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
|
||||
struct acpi_device *adev;
|
||||
char acpi_method[] = "_SxD";
|
||||
unsigned long long d_min, d_max;
|
||||
bool wakeup = false;
|
||||
|
||||
if (d_max_in < ACPI_STATE_D0 || d_max_in > ACPI_STATE_D3)
|
||||
return -EINVAL;
|
||||
if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
|
||||
printk(KERN_DEBUG "ACPI handle has no context!\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
if (d_max_in > ACPI_STATE_D3_HOT) {
|
||||
enum pm_qos_flags_status stat;
|
||||
|
||||
stat = dev_pm_qos_flags(dev, PM_QOS_FLAG_NO_POWER_OFF);
|
||||
if (stat == PM_QOS_FLAGS_ALL)
|
||||
d_max_in = ACPI_STATE_D3_HOT;
|
||||
}
|
||||
|
||||
acpi_method[2] = '0' + acpi_target_sleep_state;
|
||||
/*
|
||||
* If the sleep state is S0, the lowest limit from ACPI is D3,
|
||||
* but if the device has _S0W, we will use the value from _S0W
|
||||
* as the lowest limit from ACPI. Finally, we will constrain
|
||||
* the lowest limit with the specified one.
|
||||
*/
|
||||
d_min = ACPI_STATE_D0;
|
||||
d_max = ACPI_STATE_D3;
|
||||
|
||||
/*
|
||||
* If present, _SxD methods return the minimum D-state (highest power
|
||||
* state) we can use for the corresponding S-states. Otherwise, the
|
||||
* minimum D-state is D0 (ACPI 3.x).
|
||||
*
|
||||
* NOTE: We rely on acpi_evaluate_integer() not clobbering the integer
|
||||
* provided -- that's our fault recovery, we ignore retval.
|
||||
*/
|
||||
if (acpi_target_sleep_state > ACPI_STATE_S0) {
|
||||
acpi_evaluate_integer(handle, acpi_method, NULL, &d_min);
|
||||
wakeup = device_may_wakeup(dev) && adev->wakeup.flags.valid
|
||||
&& adev->wakeup.sleep_state >= acpi_target_sleep_state;
|
||||
} else if (dev_pm_qos_flags(dev, PM_QOS_FLAG_REMOTE_WAKEUP) !=
|
||||
PM_QOS_FLAGS_NONE) {
|
||||
wakeup = adev->wakeup.flags.valid;
|
||||
}
|
||||
|
||||
/*
|
||||
* If _PRW says we can wake up the system from the target sleep state,
|
||||
* the D-state returned by _SxD is sufficient for that (we assume a
|
||||
* wakeup-aware driver if wake is set). Still, if _SxW exists
|
||||
* (ACPI 3.x), it should return the maximum (lowest power) D-state that
|
||||
* can wake the system. _S0W may be valid, too.
|
||||
*/
|
||||
if (wakeup) {
|
||||
acpi_status status;
|
||||
|
||||
acpi_method[3] = 'W';
|
||||
status = acpi_evaluate_integer(handle, acpi_method, NULL,
|
||||
&d_max);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
if (acpi_target_sleep_state != ACPI_STATE_S0 ||
|
||||
status != AE_NOT_FOUND)
|
||||
d_max = d_min;
|
||||
} else if (d_max < d_min) {
|
||||
/* Warn the user of the broken DSDT */
|
||||
printk(KERN_WARNING "ACPI: Wrong value from %s\n",
|
||||
acpi_method);
|
||||
/* Sanitize it */
|
||||
d_min = d_max;
|
||||
}
|
||||
}
|
||||
|
||||
if (d_max_in < d_min)
|
||||
return -EINVAL;
|
||||
if (d_min_p)
|
||||
*d_min_p = d_min;
|
||||
/* constrain d_max with specified lowest limit (max number) */
|
||||
if (d_max > d_max_in) {
|
||||
for (d_max = d_max_in; d_max > d_min; d_max--) {
|
||||
if (adev->power.states[d_max].flags.valid)
|
||||
break;
|
||||
}
|
||||
}
|
||||
return d_max;
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_pm_device_sleep_state);
|
||||
#endif /* CONFIG_PM */
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
/**
|
||||
* acpi_pm_device_run_wake - Enable/disable wake-up for given device.
|
||||
* @phys_dev: Device to enable/disable the platform to wake-up the system for.
|
||||
* @enable: Whether enable or disable the wake-up functionality.
|
||||
*
|
||||
* Find the ACPI device object corresponding to @pci_dev and try to
|
||||
* enable/disable the GPE associated with it.
|
||||
*/
|
||||
int acpi_pm_device_run_wake(struct device *phys_dev, bool enable)
|
||||
{
|
||||
struct acpi_device *dev;
|
||||
acpi_handle handle;
|
||||
|
||||
if (!device_run_wake(phys_dev))
|
||||
return -EINVAL;
|
||||
|
||||
handle = DEVICE_ACPI_HANDLE(phys_dev);
|
||||
if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) {
|
||||
dev_dbg(phys_dev, "ACPI handle has no context in %s!\n",
|
||||
__func__);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (enable) {
|
||||
acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
|
||||
acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
|
||||
} else {
|
||||
acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
|
||||
acpi_disable_wakeup_device_power(dev);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_pm_device_run_wake);
|
||||
|
||||
/**
|
||||
* acpi_pm_device_sleep_wake - enable or disable the system wake-up
|
||||
* capability of given device
|
||||
* @dev: device to handle
|
||||
* @enable: 'true' - enable, 'false' - disable the wake-up capability
|
||||
*/
|
||||
int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
|
||||
{
|
||||
acpi_handle handle;
|
||||
struct acpi_device *adev;
|
||||
int error;
|
||||
|
||||
if (!device_can_wakeup(dev))
|
||||
return -EINVAL;
|
||||
|
||||
handle = DEVICE_ACPI_HANDLE(dev);
|
||||
if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
|
||||
dev_dbg(dev, "ACPI handle has no context in %s!\n", __func__);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
error = enable ?
|
||||
acpi_enable_wakeup_device_power(adev, acpi_target_sleep_state) :
|
||||
acpi_disable_wakeup_device_power(adev);
|
||||
if (!error)
|
||||
dev_info(dev, "wake-up capability %s by ACPI\n",
|
||||
enable ? "enabled" : "disabled");
|
||||
|
||||
return error;
|
||||
}
|
||||
#endif /* CONFIG_PM_SLEEP */
|
||||
|
||||
static void acpi_power_off_prepare(void)
|
||||
{
|
||||
/* Prepare to power off the system */
|
||||
|
|
|
@ -20,8 +20,6 @@
|
|||
#include <linux/pm_qos.h>
|
||||
#include "pci.h"
|
||||
|
||||
static DEFINE_MUTEX(pci_acpi_pm_notify_mtx);
|
||||
|
||||
/**
|
||||
* pci_acpi_wake_bus - Wake-up notification handler for root buses.
|
||||
* @handle: ACPI handle of a device the notification is for.
|
||||
|
@ -68,67 +66,6 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context)
|
|||
pci_pme_wakeup_bus(pci_dev->subordinate);
|
||||
}
|
||||
|
||||
/**
|
||||
* add_pm_notifier - Register PM notifier for given ACPI device.
|
||||
* @dev: ACPI device to add the notifier for.
|
||||
* @context: PCI device or bus to check for PME status if an event is signaled.
|
||||
*
|
||||
* NOTE: @dev need not be a run-wake or wake-up device to be a valid source of
|
||||
* PM wake-up events. For example, wake-up events may be generated for bridges
|
||||
* if one of the devices below the bridge is signaling PME, even if the bridge
|
||||
* itself doesn't have a wake-up GPE associated with it.
|
||||
*/
|
||||
static acpi_status add_pm_notifier(struct acpi_device *dev,
|
||||
acpi_notify_handler handler,
|
||||
void *context)
|
||||
{
|
||||
acpi_status status = AE_ALREADY_EXISTS;
|
||||
|
||||
mutex_lock(&pci_acpi_pm_notify_mtx);
|
||||
|
||||
if (dev->wakeup.flags.notifier_present)
|
||||
goto out;
|
||||
|
||||
status = acpi_install_notify_handler(dev->handle,
|
||||
ACPI_SYSTEM_NOTIFY,
|
||||
handler, context);
|
||||
if (ACPI_FAILURE(status))
|
||||
goto out;
|
||||
|
||||
dev->wakeup.flags.notifier_present = true;
|
||||
|
||||
out:
|
||||
mutex_unlock(&pci_acpi_pm_notify_mtx);
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* remove_pm_notifier - Unregister PM notifier from given ACPI device.
|
||||
* @dev: ACPI device to remove the notifier from.
|
||||
*/
|
||||
static acpi_status remove_pm_notifier(struct acpi_device *dev,
|
||||
acpi_notify_handler handler)
|
||||
{
|
||||
acpi_status status = AE_BAD_PARAMETER;
|
||||
|
||||
mutex_lock(&pci_acpi_pm_notify_mtx);
|
||||
|
||||
if (!dev->wakeup.flags.notifier_present)
|
||||
goto out;
|
||||
|
||||
status = acpi_remove_notify_handler(dev->handle,
|
||||
ACPI_SYSTEM_NOTIFY,
|
||||
handler);
|
||||
if (ACPI_FAILURE(status))
|
||||
goto out;
|
||||
|
||||
dev->wakeup.flags.notifier_present = false;
|
||||
|
||||
out:
|
||||
mutex_unlock(&pci_acpi_pm_notify_mtx);
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* pci_acpi_add_bus_pm_notifier - Register PM notifier for given PCI bus.
|
||||
* @dev: ACPI device to add the notifier for.
|
||||
|
@ -137,7 +74,7 @@ static acpi_status remove_pm_notifier(struct acpi_device *dev,
|
|||
acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev,
|
||||
struct pci_bus *pci_bus)
|
||||
{
|
||||
return add_pm_notifier(dev, pci_acpi_wake_bus, pci_bus);
|
||||
return acpi_add_pm_notifier(dev, pci_acpi_wake_bus, pci_bus);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -146,7 +83,7 @@ acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev,
|
|||
*/
|
||||
acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
|
||||
{
|
||||
return remove_pm_notifier(dev, pci_acpi_wake_bus);
|
||||
return acpi_remove_pm_notifier(dev, pci_acpi_wake_bus);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -157,7 +94,7 @@ acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
|
|||
acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
|
||||
struct pci_dev *pci_dev)
|
||||
{
|
||||
return add_pm_notifier(dev, pci_acpi_wake_dev, pci_dev);
|
||||
return acpi_add_pm_notifier(dev, pci_acpi_wake_dev, pci_dev);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -166,7 +103,7 @@ acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
|
|||
*/
|
||||
acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
|
||||
{
|
||||
return remove_pm_notifier(dev, pci_acpi_wake_dev);
|
||||
return acpi_remove_pm_notifier(dev, pci_acpi_wake_dev);
|
||||
}
|
||||
|
||||
phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle)
|
||||
|
|
|
@ -201,6 +201,7 @@ struct acpi_device_power_flags {
|
|||
struct acpi_device_power_state {
|
||||
struct {
|
||||
u8 valid:1;
|
||||
u8 os_accessible:1;
|
||||
u8 explicit_set:1; /* _PSx present? */
|
||||
u8 reserved:6;
|
||||
} flags;
|
||||
|
@ -339,6 +340,7 @@ acpi_status acpi_bus_get_status_handle(acpi_handle handle,
|
|||
unsigned long long *sta);
|
||||
int acpi_bus_get_status(struct acpi_device *device);
|
||||
int acpi_bus_set_power(acpi_handle handle, int state);
|
||||
int acpi_device_set_power(struct acpi_device *device, int state);
|
||||
int acpi_bus_update_power(acpi_handle handle, int *state_p);
|
||||
bool acpi_bus_power_manageable(acpi_handle handle);
|
||||
bool acpi_bus_can_wakeup(acpi_handle handle);
|
||||
|
@ -416,21 +418,64 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
|
|||
int acpi_disable_wakeup_device_power(struct acpi_device *dev);
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
|
||||
acpi_notify_handler handler, void *context);
|
||||
acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
|
||||
acpi_notify_handler handler);
|
||||
int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
|
||||
u32 target_state, int d_max_in, int *d_min_p);
|
||||
int acpi_pm_device_sleep_state(struct device *, int *, int);
|
||||
#else
|
||||
static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
|
||||
static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
|
||||
acpi_notify_handler handler,
|
||||
void *context)
|
||||
{
|
||||
return AE_SUPPORT;
|
||||
}
|
||||
static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
|
||||
acpi_notify_handler handler)
|
||||
{
|
||||
return AE_SUPPORT;
|
||||
}
|
||||
static inline int __acpi_device_power_state(int m, int *p)
|
||||
{
|
||||
if (p)
|
||||
*p = ACPI_STATE_D0;
|
||||
return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
|
||||
}
|
||||
static inline int acpi_device_power_state(struct device *dev,
|
||||
struct acpi_device *adev,
|
||||
u32 target_state, int d_max_in,
|
||||
int *d_min_p)
|
||||
{
|
||||
return __acpi_device_power_state(d_max_in, d_min_p);
|
||||
}
|
||||
static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
|
||||
{
|
||||
return __acpi_device_power_state(m, p);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PM_RUNTIME
|
||||
int __acpi_device_run_wake(struct acpi_device *, bool);
|
||||
int acpi_pm_device_run_wake(struct device *, bool);
|
||||
#else
|
||||
static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
int acpi_pm_device_run_wake(struct device *, bool);
|
||||
int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
|
||||
int acpi_pm_device_sleep_wake(struct device *, bool);
|
||||
#else
|
||||
static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
|
||||
static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
|
||||
u32 target_state, bool enable)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
|
@ -440,6 +485,27 @@ static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
|
|||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ACPI_SLEEP
|
||||
u32 acpi_target_system_state(void);
|
||||
#else
|
||||
static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
|
||||
#endif
|
||||
|
||||
static inline bool acpi_device_power_manageable(struct acpi_device *adev)
|
||||
{
|
||||
return adev->flags.power_manageable;
|
||||
}
|
||||
|
||||
static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
|
||||
{
|
||||
return adev->wakeup.flags.valid;
|
||||
}
|
||||
|
||||
static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
|
||||
{
|
||||
return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
|
||||
}
|
||||
|
||||
#else /* CONFIG_ACPI */
|
||||
|
||||
static inline int register_acpi_bus_type(void *bus) { return 0; }
|
||||
|
|
|
@ -25,6 +25,7 @@
|
|||
#ifndef _LINUX_ACPI_H
|
||||
#define _LINUX_ACPI_H
|
||||
|
||||
#include <linux/errno.h>
|
||||
#include <linux/ioport.h> /* for struct resource */
|
||||
|
||||
#ifdef CONFIG_ACPI
|
||||
|
@ -430,4 +431,41 @@ acpi_status acpi_os_prepare_sleep(u8 sleep_state,
|
|||
#define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ACPI) && defined(CONFIG_PM_RUNTIME)
|
||||
int acpi_dev_runtime_suspend(struct device *dev);
|
||||
int acpi_dev_runtime_resume(struct device *dev);
|
||||
int acpi_subsys_runtime_suspend(struct device *dev);
|
||||
int acpi_subsys_runtime_resume(struct device *dev);
|
||||
#else
|
||||
static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; }
|
||||
static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; }
|
||||
static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; }
|
||||
static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; }
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ACPI_SLEEP
|
||||
int acpi_dev_suspend_late(struct device *dev);
|
||||
int acpi_dev_resume_early(struct device *dev);
|
||||
int acpi_subsys_prepare(struct device *dev);
|
||||
int acpi_subsys_suspend_late(struct device *dev);
|
||||
int acpi_subsys_resume_early(struct device *dev);
|
||||
#else
|
||||
static inline int acpi_dev_suspend_late(struct device *dev) { return 0; }
|
||||
static inline int acpi_dev_resume_early(struct device *dev) { return 0; }
|
||||
static inline int acpi_subsys_prepare(struct device *dev) { return 0; }
|
||||
static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; }
|
||||
static inline int acpi_subsys_resume_early(struct device *dev) { return 0; }
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ACPI) && defined(CONFIG_PM)
|
||||
int acpi_dev_pm_attach(struct device *dev, bool power_on);
|
||||
int acpi_dev_pm_detach(struct device *dev, bool power_off);
|
||||
#else
|
||||
static inline int acpi_dev_pm_attach(struct device *dev, bool power_on)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {}
|
||||
#endif
|
||||
|
||||
#endif /*_LINUX_ACPI_H*/
|
||||
|
|
Loading…
Reference in a new issue