gpio: pca953x: Add support for level-triggered interrupts

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[ Upstream commit 417b0f8d08 ]

Adds support for level-triggered interrupts in the PCA953x GPIO
expander driver. Previously, the driver only supported edge-triggered
interrupts, which could lead to missed events in scenarios where an
interrupt condition persists until it is explicitly cleared.

By enabling level-triggered interrupts, the driver can now detect and
respond to sustained interrupt conditions more reliably.

Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
Link: https://lore.kernel.org/r/20250409-gpio-pca953x-level-triggered-irq-v3-1-7f184d814934@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Stable-dep-of: 014a17deb4 ("gpio: pca953x: handle short interrupt pulses on PCAL devices")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Potin Lai 2025-04-09 23:37:30 +08:00 • committed by Greg Kroah-Hartman

parent dd42e23b6d

commit d4f333a015

1 changed files with 27 additions and 5 deletions

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drivers/gpio/gpio-pca953x.c

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