| driver.rst (1913c7f3fc2514e09262baf2267a82dfdb215c39) | driver.rst (0ac624f47dd3474441bb56d64f97192f139b593f) |
|---|---|
| 1===================== 2GPIO Driver Interface 3===================== 4 5This document serves as a guide for writers of GPIO chip drivers. 6 7Each GPIO controller driver needs to include the following header, which defines 8the structures used to define a GPIO driver: --- 479 unchanged lines hidden (view full) --- 488 489The old way of adding irqchips to gpiochips after registration is also still 490available but we try to move away from this: 491 492- DEPRECATED: gpiochip_irqchip_add(): adds a chained cascaded irqchip to a 493 gpiochip. It will pass the struct gpio_chip* for the chip to all IRQ 494 callbacks, so the callbacks need to embed the gpio_chip in its state 495 container and obtain a pointer to the container using container_of(). | 1===================== 2GPIO Driver Interface 3===================== 4 5This document serves as a guide for writers of GPIO chip drivers. 6 7Each GPIO controller driver needs to include the following header, which defines 8the structures used to define a GPIO driver: --- 479 unchanged lines hidden (view full) --- 488 489The old way of adding irqchips to gpiochips after registration is also still 490available but we try to move away from this: 491 492- DEPRECATED: gpiochip_irqchip_add(): adds a chained cascaded irqchip to a 493 gpiochip. It will pass the struct gpio_chip* for the chip to all IRQ 494 callbacks, so the callbacks need to embed the gpio_chip in its state 495 container and obtain a pointer to the container using container_of(). |
| 496 (See Documentation/driver-model/design-patterns.txt) | 496 (See Documentation/driver-api/driver-model/design-patterns.rst) |
| 497 498- gpiochip_irqchip_add_nested(): adds a nested cascaded irqchip to a gpiochip, 499 as discussed above regarding different types of cascaded irqchips. The 500 cascaded irq has to be handled by a threaded interrupt handler. 501 Apart from that it works exactly like the chained irqchip. 502 503- DEPRECATED: gpiochip_set_chained_irqchip(): sets up a chained cascaded irq 504 handler for a gpio_chip from a parent IRQ and passes the struct gpio_chip* --- 139 unchanged lines hidden --- | 497 498- gpiochip_irqchip_add_nested(): adds a nested cascaded irqchip to a gpiochip, 499 as discussed above regarding different types of cascaded irqchips. The 500 cascaded irq has to be handled by a threaded interrupt handler. 501 Apart from that it works exactly like the chained irqchip. 502 503- DEPRECATED: gpiochip_set_chained_irqchip(): sets up a chained cascaded irq 504 handler for a gpio_chip from a parent IRQ and passes the struct gpio_chip* --- 139 unchanged lines hidden --- |