Lines Matching full:device
3 * drivers/acpi/device_pm.c - ACPI device power management routines.
28 * acpi_power_state_string - String representation of ACPI device power state.
29 * @state: ACPI device power state to return the string representation of.
49 static int acpi_dev_pm_explicit_get(struct acpi_device *device, int *state) in acpi_dev_pm_explicit_get() argument
54 status = acpi_evaluate_integer(device->handle, "_PSC", NULL, &psc); in acpi_dev_pm_explicit_get()
63 * acpi_device_get_power - Get power state of an ACPI device.
64 * @device: Device to get the power state of.
65 * @state: Place to store the power state of the device.
67 * This function does not update the device's power.state field, but it may
69 * unknown and the device's power state turns out to be D0).
73 * state shallower than previously set by acpi_device_set_power() for @device
76 int acpi_device_get_power(struct acpi_device *device, int *state) in acpi_device_get_power() argument
81 if (!device || !state) in acpi_device_get_power()
84 if (!device->flags.power_manageable) { in acpi_device_get_power()
86 *state = device->parent ? in acpi_device_get_power()
87 device->parent->power.state : ACPI_STATE_D0; in acpi_device_get_power()
92 * Get the device's power state from power resources settings and _PSC, in acpi_device_get_power()
95 if (device->power.flags.power_resources) { in acpi_device_get_power()
96 error = acpi_power_get_inferred_state(device, &result); in acpi_device_get_power()
100 if (device->power.flags.explicit_get) { in acpi_device_get_power()
103 error = acpi_dev_pm_explicit_get(device, &psc); in acpi_device_get_power()
109 * shallower than the actual power state of the device, because in acpi_device_get_power()
122 * If we were unsure about the device parent's power state up to this in acpi_device_get_power()
123 * point, the fact that the device is in D0 implies that the parent has in acpi_device_get_power()
126 if (!device->power.flags.ignore_parent && device->parent in acpi_device_get_power()
127 && device->parent->power.state == ACPI_STATE_UNKNOWN in acpi_device_get_power()
129 device->parent->power.state = ACPI_STATE_D0; in acpi_device_get_power()
134 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is %s\n", in acpi_device_get_power()
135 device->pnp.bus_id, acpi_power_state_string(*state))); in acpi_device_get_power()
154 * acpi_device_set_power - Set power state of an ACPI device.
155 * @device: Device to set the power state of.
158 * Callers must ensure that the device is power manageable before using this
161 int acpi_device_set_power(struct acpi_device *device, int state) in acpi_device_set_power() argument
166 if (!device || !device->flags.power_manageable in acpi_device_set_power()
170 acpi_handle_debug(device->handle, "Power state change: %s -> %s\n", in acpi_device_set_power()
171 acpi_power_state_string(device->power.state), in acpi_device_set_power()
177 if (state > ACPI_STATE_D0 && state == device->power.state) { in acpi_device_set_power()
178 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] already in %s\n", in acpi_device_set_power()
179 device->pnp.bus_id, in acpi_device_set_power()
191 if (!device->power.states[ACPI_STATE_D3_COLD].flags.valid) in acpi_device_set_power()
193 } else if (!device->power.states[state].flags.valid) { in acpi_device_set_power()
194 dev_warn(&device->dev, "Power state %s not supported\n", in acpi_device_set_power()
199 if (!device->power.flags.ignore_parent && in acpi_device_set_power()
200 device->parent && (state < device->parent->power.state)) { in acpi_device_set_power()
201 dev_warn(&device->dev, in acpi_device_set_power()
204 acpi_power_state_string(device->parent->power.state)); in acpi_device_set_power()
220 if (state < device->power.state) { in acpi_device_set_power()
221 dev_warn(&device->dev, "Cannot transition from %s to %s\n", in acpi_device_set_power()
222 acpi_power_state_string(device->power.state), in acpi_device_set_power()
228 * If the device goes from D3hot to D3cold, _PS3 has been in acpi_device_set_power()
231 if (device->power.state < ACPI_STATE_D3_HOT) { in acpi_device_set_power()
232 result = acpi_dev_pm_explicit_set(device, state); in acpi_device_set_power()
237 if (device->power.flags.power_resources) in acpi_device_set_power()
238 result = acpi_power_transition(device, target_state); in acpi_device_set_power()
240 int cur_state = device->power.state; in acpi_device_set_power()
242 if (device->power.flags.power_resources) { in acpi_device_set_power()
243 result = acpi_power_transition(device, ACPI_STATE_D0); in acpi_device_set_power()
252 if (!device->power.flags.explicit_get) in acpi_device_set_power()
256 * The power state of the device was set to D0 last in acpi_device_set_power()
260 * for the device here. However, use extra care here in acpi_device_set_power()
261 * and evaluate _PSC to check the device's current power in acpi_device_set_power()
266 result = acpi_dev_pm_explicit_get(device, &psc); in acpi_device_set_power()
271 result = acpi_dev_pm_explicit_set(device, ACPI_STATE_D0); in acpi_device_set_power()
276 dev_warn(&device->dev, "Failed to change power state to %s\n", in acpi_device_set_power()
279 device->power.state = target_state; in acpi_device_set_power()
281 "Device [%s] transitioned to %s\n", in acpi_device_set_power()
282 device->pnp.bus_id, in acpi_device_set_power()
292 struct acpi_device *device; in acpi_bus_set_power() local
295 result = acpi_bus_get_device(handle, &device); in acpi_bus_set_power()
299 return acpi_device_set_power(device, state); in acpi_bus_set_power()
303 int acpi_bus_init_power(struct acpi_device *device) in acpi_bus_init_power() argument
308 if (!device) in acpi_bus_init_power()
311 device->power.state = ACPI_STATE_UNKNOWN; in acpi_bus_init_power()
312 if (!acpi_device_is_present(device)) { in acpi_bus_init_power()
313 device->flags.initialized = false; in acpi_bus_init_power()
317 result = acpi_device_get_power(device, &state); in acpi_bus_init_power()
321 if (state < ACPI_STATE_D3_COLD && device->power.flags.power_resources) { in acpi_bus_init_power()
323 result = acpi_power_on_resources(device, state); in acpi_bus_init_power()
332 * another device using the same power resources may in acpi_bus_init_power()
336 result = acpi_dev_pm_explicit_set(device, state); in acpi_bus_init_power()
343 * it D0 in hope that this is what the BIOS put the device into. in acpi_bus_init_power()
349 device->power.state = state; in acpi_bus_init_power()
354 * acpi_device_fix_up_power - Force device with missing _PSC into D0.
355 * @device: Device object whose power state is to be fixed up.
361 int acpi_device_fix_up_power(struct acpi_device *device) in acpi_device_fix_up_power() argument
365 if (!device->power.flags.power_resources in acpi_device_fix_up_power()
366 && !device->power.flags.explicit_get in acpi_device_fix_up_power()
367 && device->power.state == ACPI_STATE_D0) in acpi_device_fix_up_power()
368 ret = acpi_dev_pm_explicit_set(device, ACPI_STATE_D0); in acpi_device_fix_up_power()
374 int acpi_device_update_power(struct acpi_device *device, int *state_p) in acpi_device_update_power() argument
379 if (device->power.state == ACPI_STATE_UNKNOWN) { in acpi_device_update_power()
380 result = acpi_bus_init_power(device); in acpi_device_update_power()
382 *state_p = device->power.state; in acpi_device_update_power()
387 result = acpi_device_get_power(device, &state); in acpi_device_update_power()
393 result = acpi_device_set_power(device, state); in acpi_device_update_power()
397 if (device->power.flags.power_resources) { in acpi_device_update_power()
402 result = acpi_power_transition(device, state); in acpi_device_update_power()
406 device->power.state = state; in acpi_device_update_power()
417 struct acpi_device *device; in acpi_bus_update_power() local
420 result = acpi_bus_get_device(handle, &device); in acpi_bus_update_power()
421 return result ? result : acpi_device_update_power(device, state_p); in acpi_bus_update_power()
427 struct acpi_device *device; in acpi_bus_power_manageable() local
430 result = acpi_bus_get_device(handle, &device); in acpi_bus_power_manageable()
431 return result ? false : device->flags.power_manageable; in acpi_bus_power_manageable()
439 void acpi_pm_wakeup_event(struct device *dev) in acpi_pm_wakeup_event()
476 * acpi_add_pm_notifier - Register PM notify handler for given ACPI device.
477 * @adev: ACPI device to add the notify handler for.
478 * @dev: Device to generate a wakeup event for while handling the notification.
481 * NOTE: @adev need not be a run-wake or wakeup device to be a valid source of
486 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, in acpi_add_pm_notifier()
518 * acpi_remove_pm_notifier - Unregister PM notifier from given ACPI device.
519 * @adev: ACPI device to remove the notifier from.
550 struct acpi_device *device; in acpi_bus_can_wakeup() local
553 result = acpi_bus_get_device(handle, &device); in acpi_bus_can_wakeup()
554 return result ? false : device->wakeup.flags.valid; in acpi_bus_can_wakeup()
558 bool acpi_pm_device_can_wakeup(struct device *dev) in acpi_pm_device_can_wakeup()
566 * acpi_dev_pm_get_state - Get preferred power state of ACPI device.
567 * @dev: Device whose preferred target power state to return.
568 * @adev: ACPI device node corresponding to @dev.
569 * @target_state: System state to match the resultant device state.
570 * @d_min_p: Location to store the highest power state available to the device.
571 * @d_max_p: Location to store the lowest power state available to the device.
574 * device power states that the device can be in while the system is in the
586 static int acpi_dev_pm_get_state(struct device *dev, struct acpi_device *adev, in acpi_dev_pm_get_state()
598 * If the system state is S0, the lowest power state the device can be in acpi_dev_pm_get_state()
599 * in is D3cold, unless the device has _S0W and is supposed to signal in acpi_dev_pm_get_state()
601 * lowest power state available to the device. in acpi_dev_pm_get_state()
682 * acpi_pm_device_sleep_state - Get preferred power state of ACPI device.
683 * @dev: Device whose preferred target power state to return.
686 * Return value: Preferred power state of the device on success, -ENODEV
692 int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p, int d_max_in) in acpi_pm_device_sleep_state()
738 * @context: Device wakeup context.
742 struct device *dev = context->dev; in acpi_pm_notify_work_func()
791 * acpi_device_wakeup_enable - Enable wakeup functionality for device.
792 * @adev: ACPI device to enable wakeup functionality for.
796 * for the device in response to external (remote) events and enable wakeup
799 * Callers must ensure that @adev is a valid ACPI device node before executing
808 * acpi_device_wakeup_disable - Disable wakeup functionality for device.
809 * @adev: ACPI device to disable wakeup functionality for.
813 * Callers must ensure that @adev is a valid ACPI device node before executing
835 * acpi_pm_set_device_wakeup - Enable/disable remote wakeup for given device.
836 * @dev: Device to enable/disable to generate wakeup events.
839 int acpi_pm_set_device_wakeup(struct device *dev, bool enable) in acpi_pm_set_device_wakeup()
868 * acpi_dev_pm_low_power - Put ACPI device into a low-power state.
869 * @dev: Device to put into a low-power state.
870 * @adev: ACPI device node corresponding to @dev.
871 * @system_state: System state to choose the device state for.
873 static int acpi_dev_pm_low_power(struct device *dev, struct acpi_device *adev, in acpi_dev_pm_low_power()
886 * acpi_dev_pm_full_power - Put ACPI device into the full-power state.
887 * @adev: ACPI device node to put into the full-power state.
896 * acpi_dev_suspend - Put device into a low-power state using ACPI.
897 * @dev: Device to put into a low-power state.
898 * @wakeup: Whether or not to enable wakeup for the device.
900 * Put the given device into a low-power state using the standard ACPI
902 * device into (this checks if remote wakeup is expected to work too), and set
903 * the power state of the device.
905 int acpi_dev_suspend(struct device *dev, bool wakeup) in acpi_dev_suspend()
931 * acpi_dev_resume - Put device into the full-power state using ACPI.
932 * @dev: Device to put into the full-power state.
934 * Put the given device into the full-power state using the standard ACPI
935 * mechanism. Set the power state of the device to ACPI D0 and disable wakeup.
937 int acpi_dev_resume(struct device *dev) in acpi_dev_resume()
952 * acpi_subsys_runtime_suspend - Suspend device using ACPI.
953 * @dev: Device to suspend.
958 int acpi_subsys_runtime_suspend(struct device *dev) in acpi_subsys_runtime_suspend()
966 * acpi_subsys_runtime_resume - Resume device using ACPI.
967 * @dev: Device to Resume.
969 * Use ACPI to put the given device into the full-power state and carry out the
972 int acpi_subsys_runtime_resume(struct device *dev) in acpi_subsys_runtime_resume()
980 static bool acpi_dev_needs_resume(struct device *dev, struct acpi_device *adev) in acpi_dev_needs_resume()
1003 * acpi_subsys_prepare - Prepare device for system transition to a sleep state.
1004 * @dev: Device to prepare.
1006 int acpi_subsys_prepare(struct device *dev) in acpi_subsys_prepare()
1025 * acpi_subsys_complete - Finalize device's resume during system resume.
1026 * @dev: Device to handle.
1028 void acpi_subsys_complete(struct device *dev) in acpi_subsys_complete()
1032 * If the device had been runtime-suspended before the system went into in acpi_subsys_complete()
1042 * acpi_subsys_suspend - Run the device driver's suspend callback.
1043 * @dev: Device to handle.
1050 int acpi_subsys_suspend(struct device *dev) in acpi_subsys_suspend()
1061 * acpi_subsys_suspend_late - Suspend device using ACPI.
1062 * @dev: Device to suspend.
1067 int acpi_subsys_suspend_late(struct device *dev) in acpi_subsys_suspend_late()
1080 * acpi_subsys_suspend_noirq - Run the device driver's "noirq" suspend callback.
1081 * @dev: Device to suspend.
1083 int acpi_subsys_suspend_noirq(struct device *dev) in acpi_subsys_suspend_noirq()
1096 * to check whether or not the device's wakeup settings are good for in acpi_subsys_suspend_noirq()
1098 * acpi_subsys_complete() to take care of fixing up the device's state in acpi_subsys_suspend_noirq()
1109 * acpi_subsys_resume_noirq - Run the device driver's "noirq" resume callback.
1110 * @dev: Device to handle.
1112 static int acpi_subsys_resume_noirq(struct device *dev) in acpi_subsys_resume_noirq()
1121 * acpi_subsys_resume_early - Resume device using ACPI.
1122 * @dev: Device to Resume.
1124 * Use ACPI to put the given device into the full-power state and carry out the
1128 static int acpi_subsys_resume_early(struct device *dev) in acpi_subsys_resume_early()
1140 * acpi_subsys_freeze - Run the device driver's freeze callback.
1141 * @dev: Device to handle.
1143 int acpi_subsys_freeze(struct device *dev) in acpi_subsys_freeze()
1160 * acpi_subsys_restore_early - Restore device using ACPI.
1161 * @dev: Device to restore.
1163 int acpi_subsys_restore_early(struct device *dev) in acpi_subsys_restore_early()
1171 * acpi_subsys_poweroff - Run the device driver's poweroff callback.
1172 * @dev: Device to handle.
1179 int acpi_subsys_poweroff(struct device *dev) in acpi_subsys_poweroff()
1190 * acpi_subsys_poweroff_late - Run the device driver's poweroff callback.
1191 * @dev: Device to handle.
1196 static int acpi_subsys_poweroff_late(struct device *dev) in acpi_subsys_poweroff_late()
1212 * @dev: Device to suspend.
1214 static int acpi_subsys_poweroff_noirq(struct device *dev) in acpi_subsys_poweroff_noirq()
1245 * acpi_dev_pm_detach - Remove ACPI power management from the device.
1246 * @dev: Device to take care of.
1247 * @power_off: Whether or not to try to remove power from the device.
1249 * Remove the device from the general ACPI PM domain and remove its wakeup
1250 * notifier. If @power_off is set, additionally remove power from the device if
1256 static void acpi_dev_pm_detach(struct device *dev, bool power_off) in acpi_dev_pm_detach()
1265 * If the device's PM QoS resume latency limit or flags in acpi_dev_pm_detach()
1268 * choice of the low-power state to put the device into. in acpi_dev_pm_detach()
1279 * acpi_dev_pm_attach - Prepare device for ACPI power management.
1280 * @dev: Device to prepare.
1281 * @power_on: Whether or not to power on the device.
1284 * attached to it, install a wakeup notification handler for the device and
1285 * add it to the general ACPI PM domain. If @power_on is set, the device will
1294 int acpi_dev_pm_attach(struct device *dev, bool power_on) in acpi_dev_pm_attach()
1297 * Skip devices whose ACPI companions match the device IDs below, in acpi_dev_pm_attach()
1311 * Only attach the power domain to the first device if the in acpi_dev_pm_attach()