1  /* SPDX-License-Identifier: GPL-2.0+ */
2  /*
3   * Copyright (C) 2017-2018 Bartosz Golaszewski <brgl@bgdev.pl>
4   * Copyright (C) 2020 Bartosz Golaszewski <bgolaszewski@baylibre.com>
5   */
6  
7  #ifndef _LINUX_IRQ_SIM_H
8  #define _LINUX_IRQ_SIM_H
9  
10  #include <linux/device.h>
11  #include <linux/fwnode.h>
12  #include <linux/irqdomain.h>
13  
14  /*
15   * Provides a framework for allocating simulated interrupts which can be
16   * requested like normal irqs and enqueued from process context.
17   */
18  
19  struct irq_sim_ops {
20  	int (*irq_sim_irq_requested)(struct irq_domain *domain,
21  				     irq_hw_number_t hwirq, void *data);
22  	void (*irq_sim_irq_released)(struct irq_domain *domain,
23  				     irq_hw_number_t hwirq, void *data);
24  };
25  
26  struct irq_domain *irq_domain_create_sim(struct fwnode_handle *fwnode,
27  					 unsigned int num_irqs);
28  struct irq_domain *devm_irq_domain_create_sim(struct device *dev,
29  					      struct fwnode_handle *fwnode,
30  					      unsigned int num_irqs);
31  struct irq_domain *irq_domain_create_sim_full(struct fwnode_handle *fwnode,
32  					      unsigned int num_irqs,
33  					      const struct irq_sim_ops *ops,
34  					      void *data);
35  struct irq_domain *
36  devm_irq_domain_create_sim_full(struct device *dev,
37  				struct fwnode_handle *fwnode,
38  				unsigned int num_irqs,
39  				const struct irq_sim_ops *ops,
40  				void *data);
41  void irq_domain_remove_sim(struct irq_domain *domain);
42  
43  #endif /* _LINUX_IRQ_SIM_H */
44