linux-stable/include/linux/gpio
Marc Zyngier 7973c4b3b9 gpio: Allow per-parent interrupt data
[ Upstream commit cfe6807d82 ]

The core gpiolib code is able to deal with multiple interrupt parents
for a single gpio irqchip. It however only allows a single piece
of data to be conveyed to all flow handlers (either the gpio_chip
or some other, driver-specific data).

This means that drivers have to go through some interesting dance
to find the correct context, something that isn't great in interrupt
context (see aebdc8abc9 for a prime
example).

Instead, offer an optional way for a pinctrl/gpio driver to provide
an array of pointers which gets used to provide the correct context
to the flow handler.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211026175815.52703-2-joey.gouly@arm.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Stable-dep-of: 8c00914e54 ("gpiolib: Fix GPIO chip IRQ initialization restriction")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-06-28 10:29:50 +02:00
..
aspeed.h
consumer.h gpiolib: make struct comments into real kernel docs 2022-12-31 13:14:30 +01:00
driver.h gpio: Allow per-parent interrupt data 2023-06-28 10:29:50 +02:00
gpio-reg.h
machine.h
regmap.h