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OpenCloudOS-Kernel/include/linux/irq_sim.h

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genirq/irq_sim: Use the SPDX license identifier in the header Use C-style comment for the identifier as per Documentation/process/license-rules.rst and remove the license boilerplate. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20180426200747.8344-2-brgl@bgdev.pl
2018-04-27 04:07:47 +08:00
/* SPDX-License-Identifier: GPL-2.0+ */
genirq/irq_sim: Add a simple interrupt simulator framework Implement a simple, irq_work-based framework for simulating interrupts. Currently the API exposes routines for initializing and deinitializing the simulator object, enqueueing the interrupts and retrieving the allocated interrupt numbers based on the offset of the dummy interrupt in the simulator struct. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-doc@vger.kernel.org Cc: linux-gpio@vger.kernel.org Cc: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Cc: Jonathan Cameron <jic23@kernel.org> Link: http://lkml.kernel.org/r/20170814145318.6495-2-brgl@bgdev.pl Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-08-14 22:53:16 +08:00
/*
genirq/irq_sim: Use the SPDX license identifier in the header Use C-style comment for the identifier as per Documentation/process/license-rules.rst and remove the license boilerplate. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20180426200747.8344-2-brgl@bgdev.pl
2018-04-27 04:07:47 +08:00
* Copyright (C) 2017-2018 Bartosz Golaszewski <brgl@bgdev.pl>
genirq/irq_sim: Simplify the API The interrupt simulator API exposes a lot of custom data structures and functions and doesn't reuse the interfaces already exposed by the irq subsystem. This patch tries to address it. We hide all the simulator-related data structures from users and instead rely on the well-known irq domain. When creating the interrupt simulator the user receives a pointer to a newly created irq_domain and can use it to create mappings for simulated interrupts. It is also possible to pass a handle to fwnode when creating the simulator domain and retrieve it using irq_find_matching_fwnode(). The irq_sim_fire() function is dropped as well. Instead we implement the irq_get/set_irqchip_state interface. We modify the two modules that use the simulator at the same time as adding these changes in order to reduce the intermediate bloat that would result when trying to migrate the drivers in separate patches. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for IIO Link: https://lore.kernel.org/r/20200514083901.23445-3-brgl@bgdev.pl
2020-05-14 16:39:01 +08:00
* Copyright (C) 2020 Bartosz Golaszewski <bgolaszewski@baylibre.com>
genirq/irq_sim: Add a simple interrupt simulator framework Implement a simple, irq_work-based framework for simulating interrupts. Currently the API exposes routines for initializing and deinitializing the simulator object, enqueueing the interrupts and retrieving the allocated interrupt numbers based on the offset of the dummy interrupt in the simulator struct. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-doc@vger.kernel.org Cc: linux-gpio@vger.kernel.org Cc: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Cc: Jonathan Cameron <jic23@kernel.org> Link: http://lkml.kernel.org/r/20170814145318.6495-2-brgl@bgdev.pl Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-08-14 22:53:16 +08:00
*/
genirq/irq_sim: Use the SPDX license identifier in the header Use C-style comment for the identifier as per Documentation/process/license-rules.rst and remove the license boilerplate. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20180426200747.8344-2-brgl@bgdev.pl
2018-04-27 04:07:47 +08:00
#ifndef _LINUX_IRQ_SIM_H
#define _LINUX_IRQ_SIM_H
genirq/irq_sim: Add a devres variant of irq_sim_init() Add a resource managed version of irq_sim_init(). This can be conveniently used in device drivers. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-doc@vger.kernel.org Cc: linux-gpio@vger.kernel.org Cc: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Cc: Jonathan Cameron <jic23@kernel.org> Link: http://lkml.kernel.org/r/20170814145318.6495-3-brgl@bgdev.pl Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-08-14 22:53:17 +08:00
#include <linux/device.h>
genirq/irq_sim: Simplify the API The interrupt simulator API exposes a lot of custom data structures and functions and doesn't reuse the interfaces already exposed by the irq subsystem. This patch tries to address it. We hide all the simulator-related data structures from users and instead rely on the well-known irq domain. When creating the interrupt simulator the user receives a pointer to a newly created irq_domain and can use it to create mappings for simulated interrupts. It is also possible to pass a handle to fwnode when creating the simulator domain and retrieve it using irq_find_matching_fwnode(). The irq_sim_fire() function is dropped as well. Instead we implement the irq_get/set_irqchip_state interface. We modify the two modules that use the simulator at the same time as adding these changes in order to reduce the intermediate bloat that would result when trying to migrate the drivers in separate patches. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for IIO Link: https://lore.kernel.org/r/20200514083901.23445-3-brgl@bgdev.pl
2020-05-14 16:39:01 +08:00
#include <linux/fwnode.h>
#include <linux/irqdomain.h>
genirq/irq_sim: Add a simple interrupt simulator framework Implement a simple, irq_work-based framework for simulating interrupts. Currently the API exposes routines for initializing and deinitializing the simulator object, enqueueing the interrupts and retrieving the allocated interrupt numbers based on the offset of the dummy interrupt in the simulator struct. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-doc@vger.kernel.org Cc: linux-gpio@vger.kernel.org Cc: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Cc: Jonathan Cameron <jic23@kernel.org> Link: http://lkml.kernel.org/r/20170814145318.6495-2-brgl@bgdev.pl Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-08-14 22:53:16 +08:00
/*
* Provides a framework for allocating simulated interrupts which can be
* requested like normal irqs and enqueued from process context.
*/
genirq/irq_sim: Simplify the API The interrupt simulator API exposes a lot of custom data structures and functions and doesn't reuse the interfaces already exposed by the irq subsystem. This patch tries to address it. We hide all the simulator-related data structures from users and instead rely on the well-known irq domain. When creating the interrupt simulator the user receives a pointer to a newly created irq_domain and can use it to create mappings for simulated interrupts. It is also possible to pass a handle to fwnode when creating the simulator domain and retrieve it using irq_find_matching_fwnode(). The irq_sim_fire() function is dropped as well. Instead we implement the irq_get/set_irqchip_state interface. We modify the two modules that use the simulator at the same time as adding these changes in order to reduce the intermediate bloat that would result when trying to migrate the drivers in separate patches. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for IIO Link: https://lore.kernel.org/r/20200514083901.23445-3-brgl@bgdev.pl
2020-05-14 16:39:01 +08:00
struct irq_domain *irq_domain_create_sim(struct fwnode_handle *fwnode,
unsigned int num_irqs);
struct irq_domain *devm_irq_domain_create_sim(struct device *dev,
struct fwnode_handle *fwnode,
unsigned int num_irqs);
void irq_domain_remove_sim(struct irq_domain *domain);
genirq/irq_sim: Add a simple interrupt simulator framework Implement a simple, irq_work-based framework for simulating interrupts. Currently the API exposes routines for initializing and deinitializing the simulator object, enqueueing the interrupts and retrieving the allocated interrupt numbers based on the offset of the dummy interrupt in the simulator struct. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-doc@vger.kernel.org Cc: linux-gpio@vger.kernel.org Cc: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Cc: Jonathan Cameron <jic23@kernel.org> Link: http://lkml.kernel.org/r/20170814145318.6495-2-brgl@bgdev.pl Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-08-14 22:53:16 +08:00
#endif /* _LINUX_IRQ_SIM_H */