From df42a02d45106ca55a90b27dadb2c44f4f9cef88 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 14 Apr 2018 11:43:18 +0200 Subject: 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: Hans Verkuil Signed-off-by: Linus Walleij --- Documentation/driver-api/gpio/drivers-on-gpio.rst | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'Documentation/driver-api/gpio/drivers-on-gpio.rst') diff --git a/Documentation/driver-api/gpio/drivers-on-gpio.rst b/Documentation/driver-api/gpio/drivers-on-gpio.rst index 7da0c1dd1f7a..f3a189320e11 100644 --- a/Documentation/driver-api/gpio/drivers-on-gpio.rst +++ b/Documentation/driver-api/gpio/drivers-on-gpio.rst @@ -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 -- cgit