diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2018-04-14 11:43:18 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-05-16 14:35:24 +0200 |
| commit | df42a02d45106ca55a90b27dadb2c44f4f9cef88 (patch) | |
| tree | bdf003126e2593e547c1d17257dede5d6f24f9f6 /Documentation/driver-api/gpio/drivers-on-gpio.rst | |
| parent | 12f92ccc5baeb99e2f1d3ea9ae2e35441a56a100 (diff) | |
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 <hans.verkuil@cisco.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/driver-api/gpio/drivers-on-gpio.rst')
| -rw-r--r-- | Documentation/driver-api/gpio/drivers-on-gpio.rst | 4 |
1 files changed, 4 insertions, 0 deletions
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 |