media: cec-gpio: add notifier support

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Add support for cec-notifier to the cec-gpio driver.

This makes it possible to associate the CEC gpio pin with an HDMI
connector. This feature was always documented in the cec-gpio bindings:

Documentation/devicetree/bindings/media/cec-gpio.txt

But support for the hdmi-phandle property was never actually implemented in
this driver.

This patch adds support for this property.

It also fixes a few incorrect error returns in the probe() function, which
skipped the call to cec_delete_adapter().

Tested on a Raspberry Pi 3B with a modified vc4 driver.

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 2019-09-19 08:15:53 -03:00 • committed by Mauro Carvalho Chehab

parent 98f290731f

commit 7e86efa2ff

2 changed files with 33 additions and 9 deletions

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1

drivers/media/platform/Kconfig

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41

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

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