mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
41cc2aaf80
With device core now able to setup the default pin configuration, the pin configuration code based on the deprecated Samsung specific gpio bindings is removed. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
75 lines
2.2 KiB
Plaintext
75 lines
2.2 KiB
Plaintext
* Samsung's Keypad Controller device tree bindings
|
|
|
|
Samsung's Keypad controller is used to interface a SoC with a matrix-type
|
|
keypad device. The keypad controller supports multiple row and column lines.
|
|
A key can be placed at each intersection of a unique row and a unique column.
|
|
The keypad controller can sense a key-press and key-release and report the
|
|
event using a interrupt to the cpu.
|
|
|
|
Required SoC Specific Properties:
|
|
- compatible: should be one of the following
|
|
- "samsung,s3c6410-keypad": For controllers compatible with s3c6410 keypad
|
|
controller.
|
|
- "samsung,s5pv210-keypad": For controllers compatible with s5pv210 keypad
|
|
controller.
|
|
|
|
- reg: physical base address of the controller and length of memory mapped
|
|
region.
|
|
|
|
- interrupts: The interrupt number to the cpu.
|
|
|
|
Required Board Specific Properties:
|
|
- samsung,keypad-num-rows: Number of row lines connected to the keypad
|
|
controller.
|
|
|
|
- samsung,keypad-num-columns: Number of column lines connected to the
|
|
keypad controller.
|
|
|
|
- Keys represented as child nodes: Each key connected to the keypad
|
|
controller is represented as a child node to the keypad controller
|
|
device node and should include the following properties.
|
|
- keypad,row: the row number to which the key is connected.
|
|
- keypad,column: the column number to which the key is connected.
|
|
- linux,code: the key-code to be reported when the key is pressed
|
|
and released.
|
|
|
|
- pinctrl-0: Should specify pin control groups used for this controller.
|
|
- pinctrl-names: Should contain only one value - "default".
|
|
|
|
Optional Properties specific to linux:
|
|
- linux,keypad-no-autorepeat: do no enable autorepeat feature.
|
|
- linux,keypad-wakeup: use any event on keypad as wakeup event.
|
|
|
|
|
|
Example:
|
|
keypad@100A0000 {
|
|
compatible = "samsung,s5pv210-keypad";
|
|
reg = <0x100A0000 0x100>;
|
|
interrupts = <173>;
|
|
samsung,keypad-num-rows = <2>;
|
|
samsung,keypad-num-columns = <8>;
|
|
linux,input-no-autorepeat;
|
|
linux,input-wakeup;
|
|
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&keypad_rows &keypad_columns>;
|
|
|
|
key_1 {
|
|
keypad,row = <0>;
|
|
keypad,column = <3>;
|
|
linux,code = <2>;
|
|
};
|
|
|
|
key_2 {
|
|
keypad,row = <0>;
|
|
keypad,column = <4>;
|
|
linux,code = <3>;
|
|
};
|
|
|
|
key_3 {
|
|
keypad,row = <0>;
|
|
keypad,column = <5>;
|
|
linux,code = <4>;
|
|
};
|
|
};
|