/** * irq_set_irq_wake - control irq power management wakeup * @irq: interrupt to control * @on: enable/disable power management wakeup * * Enable/disable power management wakeup mode, which is * disabled by default. Enables and disables must match, * just as they match for non-wakeup mode support. * * Wakeup mode lets this IRQ wake the system from sleep * states like "suspend to RAM". */ int irq_set_irq_wake(unsigned int irq, unsigned int on) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags); int ret = 0; if (!desc) return -EINVAL; /* wakeup-capable irqs can be shared between drivers that * don't need to have the same sleep mode behaviors. */ if (on) { if (desc->wake_depth++ == 0) { ret = set_irq_wake_real(irq, on); if (ret) desc->wake_depth = 0; else irqd_set(&desc->irq_data, IRQD_WAKEUP_STATE); } } else { if (desc->wake_depth == 0) { WARN(1, "Unbalanced IRQ %d wake disable\n", irq); } else if (--desc->wake_depth == 0) { ret = set_irq_wake_real(irq, on); if (ret) desc->wake_depth = 1; else irqd_clear(&desc->irq_data, IRQD_WAKEUP_STATE); } } irq_put_desc_busunlock(desc, flags); return ret; }
void __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags); if (!desc) return; if (!handle) { handle = handle_bad_irq; } else { if (WARN_ON(desc->irq_data.chip == &no_irq_chip)) goto out; } /* Uninstall? */ if (handle == handle_bad_irq) { if (desc->irq_data.chip != &no_irq_chip) mask_ack_irq(desc); irq_state_set_disabled(desc); desc->depth = 1; } desc->handle_irq = handle; desc->name = name; if (handle != handle_bad_irq && is_chained) { irq_settings_set_noprobe(desc); irq_settings_set_norequest(desc); irq_startup(desc); } out: irq_put_desc_busunlock(desc, flags); }
int irq_set_irq_wake(unsigned int irq, unsigned int on) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL); int ret = 0; if (!desc) return -EINVAL; if (on) { if (desc->wake_depth++ == 0) { ret = set_irq_wake_real(irq, on); if (ret) desc->wake_depth = 0; else irqd_set(&desc->irq_data, IRQD_WAKEUP_STATE); } } else { if (desc->wake_depth == 0) { WARN(1, "Unbalanced IRQ %d wake disable\n", irq); } else if (--desc->wake_depth == 0) { ret = set_irq_wake_real(irq, on); if (ret) desc->wake_depth = 1; else irqd_clear(&desc->irq_data, IRQD_WAKEUP_STATE); } } irq_put_desc_busunlock(desc, flags); return ret; }
int zw_irq_set_irq_wake(unsigned int irq, unsigned int on) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL); int ret = 0; if (!desc) return -EINVAL; if (on) { if (desc->zw_wake_depth != 0) { if (set_irq_wake_real(irq, on) == 0) { irqd_set(&desc->irq_data, IRQD_WAKEUP_STATE); desc->wake_depth = desc->zw_wake_depth; desc->zw_wake_depth = 0; } } } else { if ((desc->zw_wake_depth == 0) && (desc->wake_depth > 0)) { if (set_irq_wake_real(irq, on) == 0) { irqd_clear(&desc->irq_data, IRQD_WAKEUP_STATE); desc->zw_wake_depth = desc->wake_depth; desc->wake_depth = 0x7FFFFFFFU; } } } irq_put_desc_busunlock(desc, flags); return ret; }
void __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, 0); if (!desc) return; if (!handle) { handle = handle_bad_irq; } else { struct irq_data *irq_data = &desc->irq_data; #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY /* * With hierarchical domains we might run into a * situation where the outermost chip is not yet set * up, but the inner chips are there. Instead of * bailing we install the handler, but obviously we * cannot enable/startup the interrupt at this point. */ while (irq_data) { if (irq_data->chip != &no_irq_chip) break; /* * Bail out if the outer chip is not set up * and the interrrupt supposed to be started * right away. */ if (WARN_ON(is_chained)) goto out; /* Try the parent */ irq_data = irq_data->parent_data; } #endif if (WARN_ON(!irq_data || irq_data->chip == &no_irq_chip)) goto out; } /* Uninstall? */ if (handle == handle_bad_irq) { if (desc->irq_data.chip != &no_irq_chip) mask_ack_irq(desc); irq_state_set_disabled(desc); desc->depth = 1; } desc->handle_irq = handle; desc->name = name; if (handle != handle_bad_irq && is_chained) { irq_settings_set_noprobe(desc); irq_settings_set_norequest(desc); irq_settings_set_nothread(desc); irq_startup(desc, true); } out: irq_put_desc_busunlock(desc, flags); }
static int __disable_irq_nosync(unsigned int irq) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags); if (!desc) return -EINVAL; __disable_irq(desc, irq, false); irq_put_desc_busunlock(desc, flags); return 0; }
static int __disable_irq_nosync(unsigned int irq) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL); if (!desc) return -EINVAL; __disable_irq(desc); irq_put_desc_busunlock(desc, flags); return 0; }
void __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, const char *name) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, 0); if (!desc) return; if (!handle) goto out; desc->handle_irq = handle; desc->name = name; out: irq_put_desc_busunlock(desc, flags); }
void __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, 0); if (!desc) return; __irq_do_set_handler(desc, handle, is_chained, name); irq_put_desc_busunlock(desc, flags); }
/** * irq_set_type - set the irq trigger type for an irq * @irq: irq number * @type: IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h */ int irq_set_irq_type(unsigned int irq, unsigned int type) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL); int ret = 0; if (!desc) return -EINVAL; ret = __irq_set_trigger(desc, type); irq_put_desc_busunlock(desc, flags); return ret; }
/** * irq_set_type - set the irq trigger type for an irq * @irq: irq number * @type: IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h */ int irq_set_irq_type(unsigned int irq, unsigned int type) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags); int ret = 0; if (!desc) return -EINVAL; type &= IRQ_TYPE_SENSE_MASK; ret = __irq_set_trigger(desc, irq, type); irq_put_desc_busunlock(desc, flags); return ret; }
/** * enable_irq - enable handling of an irq * @irq: Interrupt to enable * * Undoes the effect of one call to disable_irq(). If this * matches the last disable, processing of interrupts on this * IRQ line is re-enabled. * * This function may be called from IRQ context only when * desc->irq_data.chip->bus_lock and desc->chip->bus_sync_unlock are NULL ! */ void enable_irq(unsigned int irq) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags); if (!desc) return; if (WARN(!desc->irq_data.chip, KERN_ERR "enable_irq before setup/request_irq: irq %u\n", irq)) goto out; __enable_irq(desc, irq, false); out: irq_put_desc_busunlock(desc, flags); }
void irq_set_chained_handler_and_data(unsigned int irq, irq_flow_handler_t handle, void *data) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, 0); if (!desc) return; __irq_do_set_handler(desc, handle, 1, NULL); desc->irq_common_data.handler_data = data; irq_put_desc_busunlock(desc, flags); }
void set_irq_handler(unsigned int irq, irq_handler_t handler) { unsigned long flags; struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL); if (!desc) return; if (desc->action) { __disable_irq(desc, irq, false); if (desc->action->thread_fn) desc->action->thread_fn = handler; else desc->action->handler = handler; __enable_irq(desc, irq, false); } irq_put_desc_busunlock(desc, flags); }