Some frameworks (e.g. iio, gpiolib) use irq_work to implement simulated interrupts that can be 'fired' from process context when needed and requested just like normal interrupts. This is useful for testing and development purposes.
Currently this code is reimplemented by every user. This series proposes to add a new set of functions that can be used by drivers that want to simulate interrupts without having to duplicate any boilerplate code. The first patch adds a simple irq simulator framework. The second extends it with resource management. The third uses the new functionality in the gpio-mockup testing driver. NOTE: The next candidate for using this API would be iio-dummy-evgen. v1 -> v2: - added a call to irq_work_sync in irq_sim_fini() v2 -> v3: - added the license header to new files - added Acked-by's and Reviewed-by's Bartosz Golaszewski (3): irq/irq_sim: add a simple interrupt simulator framework irq/irq_sim: add a devres variant of irq_sim_init() gpio: mockup: use irq_sim Documentation/driver-model/devres.txt | 1 + drivers/gpio/Kconfig | 2 +- drivers/gpio/gpio-mockup.c | 77 ++-------------- include/linux/irq_sim.h | 48 ++++++++++ init/Kconfig | 4 + kernel/Makefile | 1 + kernel/irq_sim.c | 164 ++++++++++++++++++++++++++++++++++ 7 files changed, 226 insertions(+), 71 deletions(-) create mode 100644 include/linux/irq_sim.h create mode 100644 kernel/irq_sim.c -- 2.13.2
