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gpio: Add a reference to CEC on GPIO

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This adds a pointer to the CEC GPIO driver from the GPIO list of
examples of drivers on top of GPIO.

Cc: linux-media@vger.kernel.org
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2018-04-14 11:43:18 +02:00
parent 12f92ccc5b
commit df42a02d45
1 changed files with 4 additions and 0 deletions
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Documentation/driver-api/gpio/drivers-on-gpio.rst
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@ -85,6 +85,10 @@ hardware descriptions such as device tree or ACPI:
any other serio bus to the system and makes it possible to connect drivers any other serio bus to the system and makes it possible to connect drivers
for e.g. keyboards and other PS/2 protocol based devices. for e.g. keyboards and other PS/2 protocol based devices.
- cec-gpio: drivers/media/platform/cec-gpio/ is used to interact with a CEC
Consumer Electronics Control bus using only GPIO. It is used to communicate
with devices on the HDMI bus.
Apart from this there are special GPIO drivers in subsystems like MMC/SD to Apart from this there are special GPIO drivers in subsystems like MMC/SD to
read card detect and write protect GPIO lines, and in the TTY serial subsystem read card detect and write protect GPIO lines, and in the TTY serial subsystem
to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The