| Device-Tree bindings for GPIO attached mice |
| |
| This simply uses standard GPIO handles to define a simple mouse connected |
| to 5-7 GPIO lines. |
| |
| Required properties: |
| - compatible: must be "gpio-mouse" |
| - scan-interval-ms: The scanning interval in milliseconds |
| - up-gpios: GPIO line phandle to the line indicating "up" |
| - down-gpios: GPIO line phandle to the line indicating "down" |
| - left-gpios: GPIO line phandle to the line indicating "left" |
| - right-gpios: GPIO line phandle to the line indicating "right" |
| |
| Optional properties: |
| - button-left-gpios: GPIO line handle to the left mouse button |
| - button-middle-gpios: GPIO line handle to the middle mouse button |
| - button-right-gpios: GPIO line handle to the right mouse button |
| Example: |
| |
| #include <dt-bindings/gpio/gpio.h> |
| |
| gpio-mouse { |
| compatible = "gpio-mouse"; |
| scan-interval-ms = <50>; |
| up-gpios = <&gpio0 0 GPIO_ACTIVE_LOW>; |
| down-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; |
| left-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>; |
| right-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>; |
| button-left-gpios = <&gpio0 4 GPIO_ACTIVE_LOW>; |
| button-middle-gpios = <&gpio0 5 GPIO_ACTIVE_LOW>; |
| button-right-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>; |
| }; |
