011f583781
Currently users of the interrupt simulator don't have any way of being notified about interrupts from the simulated domain being requested or released. This causes a problem for one of the users - the GPIO simulator - which is unable to lock the pins as interrupts. Define a structure containing callbacks to be executed on various irq_sim-related events (for now: irq request and release) and provide an extended function for creating simulated interrupt domains that takes it and a pointer to custom user data (to be passed to said callbacks) as arguments. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20240624093934.17089-2-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2017-2018 Bartosz Golaszewski <brgl@bgdev.pl>
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* Copyright (C) 2020 Bartosz Golaszewski <bgolaszewski@baylibre.com>
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*/
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#ifndef _LINUX_IRQ_SIM_H
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#define _LINUX_IRQ_SIM_H
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#include <linux/device.h>
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#include <linux/fwnode.h>
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#include <linux/irqdomain.h>
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/*
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* Provides a framework for allocating simulated interrupts which can be
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* requested like normal irqs and enqueued from process context.
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*/
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struct irq_sim_ops {
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int (*irq_sim_irq_requested)(struct irq_domain *domain,
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irq_hw_number_t hwirq, void *data);
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void (*irq_sim_irq_released)(struct irq_domain *domain,
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irq_hw_number_t hwirq, void *data);
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};
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struct irq_domain *irq_domain_create_sim(struct fwnode_handle *fwnode,
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unsigned int num_irqs);
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struct irq_domain *devm_irq_domain_create_sim(struct device *dev,
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struct fwnode_handle *fwnode,
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unsigned int num_irqs);
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struct irq_domain *irq_domain_create_sim_full(struct fwnode_handle *fwnode,
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unsigned int num_irqs,
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const struct irq_sim_ops *ops,
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void *data);
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struct irq_domain *
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devm_irq_domain_create_sim_full(struct device *dev,
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struct fwnode_handle *fwnode,
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unsigned int num_irqs,
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const struct irq_sim_ops *ops,
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void *data);
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void irq_domain_remove_sim(struct irq_domain *domain);
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#endif /* _LINUX_IRQ_SIM_H */
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