media: cec-gpio: use disable/enable_irq

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Due to limitations in gpiolib it was impossible to disable the interrupt of
an input gpio and then switch it to gpio output and drive it. The only way
to achieve that was to free the interrupt first, then switch the direction.

When going back to gpio input and using interrupts to read the gpio pin you
had to request the irq again.

This limitation was lifted in gpiolib in kernel 4.20, but the cec-gpio driver
was still using the old workaround implementation.

This patch updates the cec-gpio driver to just enable and disable the irq.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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This commit is contained in:

Hans Verkuil 2019-05-20 10:38:40 -04:00 • committed by Mauro Carvalho Chehab

parent 354cf00339

commit 00ccd263ee

1 changed files with 11 additions and 17 deletions

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drivers/media/platform/cec-gpio/cec-gpio.c

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