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Commit df42a02d authored by Linus Walleij's avatar Linus Walleij
Browse files

gpio: Add a reference to CEC on GPIO 



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: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 12f92ccc

Documentation/driver-api/gpio/drivers-on-gpio.rst

+4 −0
Original line number Diff line number Diff line
@@ -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

  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

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