Lines Matching +full:power +full:- +full:managed
2 * wakeirq.c - Device wakeirq helper functions
21 #include "power.h"
24 * dev_pm_attach_wake_irq - Attach device interrupt as a wake IRQ
26 * @irq: Device wake-up capable interrupt
30 * dedicated wake-up interrupt as a wake IRQ.
38 return -EINVAL; in dev_pm_attach_wake_irq()
40 spin_lock_irqsave(&dev->power.lock, flags); in dev_pm_attach_wake_irq()
41 if (dev_WARN_ONCE(dev, dev->power.wakeirq, in dev_pm_attach_wake_irq()
43 spin_unlock_irqrestore(&dev->power.lock, flags); in dev_pm_attach_wake_irq()
44 return -EEXIST; in dev_pm_attach_wake_irq()
47 dev->power.wakeirq = wirq; in dev_pm_attach_wake_irq()
50 spin_unlock_irqrestore(&dev->power.lock, flags); in dev_pm_attach_wake_irq()
55 * dev_pm_set_wake_irq - Attach device IO interrupt as wake IRQ
60 * automatically configured for wake-up from suspend based
70 return -EINVAL; in dev_pm_set_wake_irq()
74 return -ENOMEM; in dev_pm_set_wake_irq()
76 wirq->dev = dev; in dev_pm_set_wake_irq()
77 wirq->irq = irq; in dev_pm_set_wake_irq()
88 * dev_pm_clear_wake_irq - Detach a device IO interrupt wake IRQ
100 struct wake_irq *wirq = dev->power.wakeirq; in dev_pm_clear_wake_irq()
106 spin_lock_irqsave(&dev->power.lock, flags); in dev_pm_clear_wake_irq()
108 dev->power.wakeirq = NULL; in dev_pm_clear_wake_irq()
109 spin_unlock_irqrestore(&dev->power.lock, flags); in dev_pm_clear_wake_irq()
111 if (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED) { in dev_pm_clear_wake_irq()
112 free_irq(wirq->irq, wirq); in dev_pm_clear_wake_irq()
113 wirq->status &= ~WAKE_IRQ_DEDICATED_MASK; in dev_pm_clear_wake_irq()
115 kfree(wirq->name); in dev_pm_clear_wake_irq()
121 * handle_threaded_wake_irq - Handler for dedicated wake-up interrupts
122 * @irq: Device specific dedicated wake-up interrupt
125 * Some devices have a separate wake-up interrupt in addition to the
126 * device IO interrupt. The wake-up interrupt signals that a device
134 * We assume that the wake-up interrupt just needs to wake-up the
145 pm_wakeup_event(wirq->dev, 0); in handle_threaded_wake_irq()
151 res = pm_runtime_resume(wirq->dev); in handle_threaded_wake_irq()
153 dev_warn(wirq->dev, in handle_threaded_wake_irq()
160 * dev_pm_set_dedicated_wake_irq - Request a dedicated wake-up interrupt
162 * @irq: Device wake-up interrupt
164 * Unless your hardware has separate wake-up interrupts in addition
168 * a dedicated wake-up interrupt in addition to the device IO
171 * The interrupt starts disabled, and needs to be managed for
182 return -EINVAL; in dev_pm_set_dedicated_wake_irq()
186 return -ENOMEM; in dev_pm_set_dedicated_wake_irq()
188 wirq->name = kasprintf(GFP_KERNEL, "%s:wakeup", dev_name(dev)); in dev_pm_set_dedicated_wake_irq()
189 if (!wirq->name) { in dev_pm_set_dedicated_wake_irq()
190 err = -ENOMEM; in dev_pm_set_dedicated_wake_irq()
194 wirq->dev = dev; in dev_pm_set_dedicated_wake_irq()
195 wirq->irq = irq; in dev_pm_set_dedicated_wake_irq()
202 * Consumer device may need to power up and restore state in dev_pm_set_dedicated_wake_irq()
206 IRQF_ONESHOT, wirq->name, wirq); in dev_pm_set_dedicated_wake_irq()
214 wirq->status = WAKE_IRQ_DEDICATED_ALLOCATED; in dev_pm_set_dedicated_wake_irq()
221 kfree(wirq->name); in dev_pm_set_dedicated_wake_irq()
230 * dev_pm_enable_wake_irq - Enable device wake-up interrupt
234 * runtime_resume() to override the PM runtime core managed wake-up
235 * interrupt handling to enable the wake-up interrupt.
237 * Note that for runtime_suspend()) the wake-up interrupts
243 struct wake_irq *wirq = dev->power.wakeirq; in dev_pm_enable_wake_irq()
245 if (wirq && (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED)) in dev_pm_enable_wake_irq()
246 enable_irq(wirq->irq); in dev_pm_enable_wake_irq()
251 * dev_pm_disable_wake_irq - Disable device wake-up interrupt
255 * runtime_suspend() to override the PM runtime core managed wake-up
256 * interrupt handling to disable the wake-up interrupt.
260 struct wake_irq *wirq = dev->power.wakeirq; in dev_pm_disable_wake_irq()
262 if (wirq && (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED)) in dev_pm_disable_wake_irq()
263 disable_irq_nosync(wirq->irq); in dev_pm_disable_wake_irq()
268 * dev_pm_enable_wake_irq_check - Checks and enables wake-up interrupt
270 * @can_change_status: Can change wake-up interrupt status
272 * Enables wakeirq conditionally. We need to enable wake-up interrupt
275 * otherwise try to disable already disabled wakeirq. The wake-up interrupt
279 * Caller must hold &dev->power.lock to change wirq->status
284 struct wake_irq *wirq = dev->power.wakeirq; in dev_pm_enable_wake_irq_check()
286 if (!wirq || !((wirq->status & WAKE_IRQ_DEDICATED_MASK))) in dev_pm_enable_wake_irq_check()
289 if (likely(wirq->status & WAKE_IRQ_DEDICATED_MANAGED)) { in dev_pm_enable_wake_irq_check()
292 wirq->status |= WAKE_IRQ_DEDICATED_MANAGED; in dev_pm_enable_wake_irq_check()
299 enable_irq(wirq->irq); in dev_pm_enable_wake_irq_check()
303 * dev_pm_disable_wake_irq_check - Checks and disables wake-up interrupt
306 * Disables wake-up interrupt conditionally based on status.
311 struct wake_irq *wirq = dev->power.wakeirq; in dev_pm_disable_wake_irq_check()
313 if (!wirq || !((wirq->status & WAKE_IRQ_DEDICATED_MASK))) in dev_pm_disable_wake_irq_check()
316 if (wirq->status & WAKE_IRQ_DEDICATED_MANAGED) in dev_pm_disable_wake_irq_check()
317 disable_irq_nosync(wirq->irq); in dev_pm_disable_wake_irq_check()
321 * dev_pm_arm_wake_irq - Arm device wake-up
322 * @wirq: Device wake-up interrupt
324 * Sets up the wake-up event conditionally based on the
332 if (device_may_wakeup(wirq->dev)) { in dev_pm_arm_wake_irq()
333 if (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED && in dev_pm_arm_wake_irq()
334 !pm_runtime_status_suspended(wirq->dev)) in dev_pm_arm_wake_irq()
335 enable_irq(wirq->irq); in dev_pm_arm_wake_irq()
337 enable_irq_wake(wirq->irq); in dev_pm_arm_wake_irq()
342 * dev_pm_disarm_wake_irq - Disarm device wake-up
343 * @wirq: Device wake-up interrupt
345 * Clears up the wake-up event conditionally based on the
353 if (device_may_wakeup(wirq->dev)) { in dev_pm_disarm_wake_irq()
354 disable_irq_wake(wirq->irq); in dev_pm_disarm_wake_irq()
356 if (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED && in dev_pm_disarm_wake_irq()
357 !pm_runtime_status_suspended(wirq->dev)) in dev_pm_disarm_wake_irq()
358 disable_irq_nosync(wirq->irq); in dev_pm_disarm_wake_irq()