ARM: dts: sun4i: inet9f-rev03: Add support for game buttons / joysticks

The inet9f-rev03 tablet has multiple fire-buttons / direction controls,
add support for these using the same axis mapping as ps2 compatible game
controllers with the same stick / button layout use.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/boot/dts/sun4i-a10-inet9f-rev03.dts b/arch/arm/boot/dts/sun4i-a10-inet9f-rev03.dts
index 2fffc04..ca49b0d 100644 (file)
--- a/arch/arm/boot/dts/sun4i-a10-inet9f-rev03.dts
+++ b/arch/arm/boot/dts/sun4i-a10-inet9f-rev03.dts
@@ -59,6 +59,159 @@
        chosen {
                stdout-path = "serial0:115200n8";
        };
+
+       gpio_keys {
+               compatible = "gpio-keys-polled";
+               pinctrl-names = "default";
+               pinctrl-0 = <&key_pins_inet9f>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+               poll-interval = <20>;
+
+               button@0 {
+                       label = "Left Joystick Left";
+                       linux,code = <ABS_X>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <0xffffffff>; /* -1 */
+                       gpios = <&pio 0 6 GPIO_ACTIVE_LOW>; /* PA6 */
+               };
+
+               button@1 {
+                       label = "Left Joystick Right";
+                       linux,code = <ABS_X>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <1>;
+                       gpios = <&pio 0 5 GPIO_ACTIVE_LOW>; /* PA5 */
+               };
+
+               button@2 {
+                       label = "Left Joystick Up";
+                       linux,code = <ABS_Y>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <0xffffffff>; /* -1 */
+                       gpios = <&pio 0 8 GPIO_ACTIVE_LOW>; /* PA8 */
+               };
+
+               button@3 {
+                       label = "Left Joystick Down";
+                       linux,code = <ABS_Y>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <1>;
+                       gpios = <&pio 0 9 GPIO_ACTIVE_LOW>; /* PA9 */
+               };
+
+               button@4 {
+                       label = "Right Joystick Left";
+                       linux,code = <ABS_Z>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <0xffffffff>; /* -1 */
+                       gpios = <&pio 0 1 GPIO_ACTIVE_LOW>; /* PA1 */
+               };
+
+               button@5 {
+                       label = "Right Joystick Right";
+                       linux,code = <ABS_Z>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <1>;
+                       gpios = <&pio 0 0 GPIO_ACTIVE_LOW>; /* PA0 */
+               };
+
+               button@6 {
+                       label = "Right Joystick Up";
+                       linux,code = <ABS_RZ>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <0xffffffff>; /* -1 */
+                       gpios = <&pio 0 3 GPIO_ACTIVE_LOW>; /* PA3 */
+               };
+
+               button@7 {
+                       label = "Right Joystick Down";
+                       linux,code = <ABS_RZ>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <1>;
+                       gpios = <&pio 0 4 GPIO_ACTIVE_LOW>; /* PA4 */
+               };
+
+               button@8 {
+                       label = "DPad Left";
+                       linux,code = <ABS_HAT0X>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <0xffffffff>; /* -1 */
+                       gpios = <&pio 7 23 GPIO_ACTIVE_LOW>; /* PH23 */
+               };
+
+               button@9 {
+                       label = "DPad Right";
+                       linux,code = <ABS_HAT0X>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <1>;
+                       gpios = <&pio 7 24 GPIO_ACTIVE_LOW>; /* PH24 */
+               };
+
+               button@10 {
+                       label = "DPad Up";
+                       linux,code = <ABS_HAT0Y>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <0xffffffff>; /* -1 */
+                       gpios = <&pio 7 25 GPIO_ACTIVE_LOW>; /* PH25 */
+               };
+
+               button@11 {
+                       label = "DPad Down";
+                       linux,code = <ABS_HAT0Y>;
+                       linux,input-type = <EV_ABS>;
+                       linux,input-value = <1>;
+                       gpios = <&pio 7 26 GPIO_ACTIVE_LOW>; /* PH26 */
+               };
+
+               button@12 {
+                       label = "Button X";
+                       linux,code = <BTN_X>;
+                       gpios = <&pio 0 16 GPIO_ACTIVE_LOW>; /* PA16 */
+               };
+
+               button@13 {
+                       label = "Button Y";
+                       linux,code = <BTN_Y>;
+                       gpios = <&pio 0 14 GPIO_ACTIVE_LOW>; /* PA14 */
+               };
+
+               button@14 {
+                       label = "Button A";
+                       linux,code = <BTN_A>;
+                       gpios = <&pio 0 17 GPIO_ACTIVE_LOW>; /* PA17 */
+               };
+
+               button@15 {
+                       label = "Button B";
+                       linux,code = <BTN_B>;
+                       gpios = <&pio 0 15 GPIO_ACTIVE_LOW>; /* PA15 */
+               };
+
+               button@16 {
+                       label = "Select Button";
+                       linux,code = <BTN_SELECT>;
+                       gpios = <&pio 0 11 GPIO_ACTIVE_LOW>; /* PA11 */
+               };
+
+               button@17 {
+                       label = "Start Button";
+                       linux,code = <BTN_START>;
+                       gpios = <&pio 0 12 GPIO_ACTIVE_LOW>; /* PA12 */
+               };
+
+               button@18 {
+                       label = "Top Left Button";
+                       linux,code = <BTN_TL>;
+                       gpios = <&pio 7 22 GPIO_ACTIVE_LOW>; /* PH22 */
+               };
+
+               button@19 {
+                       label = "Top Right Button";
+                       linux,code = <BTN_TR>;
+                       gpios = <&pio 0 13 GPIO_ACTIVE_LOW>; /* PA13 */
+               };
+       };
 };
 
 &cpu0 {
@@ -157,6 +310,17 @@
 };
 
 &pio {
+       key_pins_inet9f: key_pins@0 {
+               allwinner,pins = "PA0", "PA1", "PA3", "PA4",
+                                "PA5", "PA6", "PA8", "PA9",
+                                "PA11", "PA12", "PA13",
+                                "PA14", "PA15", "PA16", "PA17",
+                                "PH22", "PH23", "PH24", "PH25", "PH26";
+               allwinner,function = "gpio_in";
+               allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+               allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
+       };
+
        usb0_id_detect_pin: usb0_id_detect_pin@0 {
                allwinner,pins = "PH4";
                allwinner,function = "gpio_in";