New behavior for ext power control

app/CMakeLists.txt

@@ -46,6 +46,7 @@ if (NOT CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
   target_sources(app PRIVATE src/behaviors/behavior_transparent.c)
   target_sources(app PRIVATE src/behaviors/behavior_none.c)
   target_sources(app PRIVATE src/behaviors/behavior_sensor_rotate_key_press.c)
+  target_sources_ifdef(CONFIG_ZMK_EXT_POWER app PRIVATE src/behaviors/behavior_ext_power.c)
   target_sources(app PRIVATE src/keymap.c)
 endif()
 target_sources_ifdef(CONFIG_ZMK_RGB_UNDERGLOW app PRIVATE src/behaviors/behavior_rgb_underglow.c)

app/boards/shields/lily58/lily58.keymap

@@ -7,6 +7,7 @@
 #include <behaviors.dtsi>
 #include <dt-bindings/zmk/keys.h>
 #include <dt-bindings/zmk/bt.h>
+#include <dt-bindings/zmk/ext_power.h>
 
 / {
 	keymap {
@@ -41,7 +42,7 @@
 &bt BT_CLR &bt BT_SEL 0      &bt BT_SEL 1       &bt BT_SEL 2 &bt BT_SEL 3 &bt BT_SEL 4                 &trans    &trans    &trans    &trans    &trans    &trans
 &kp F1     &kp F2            &kp F3             &kp F4       &kp F5       &kp F6                       &kp F7    &kp F8    &kp F9    &kp F10   &kp F11   &kp F12
 &kp GRAV   &kp BANG          &kp ATSN           &kp HASH     &kp CURU     &kp PRCT                     &kp CRRT  &kp AMPS  &kp KMLT  &kp LPRN  &kp RPRN  &kp TILD
-&trans     &trans       &trans       &trans       &trans       &trans    &trans   &trans    &trans    &kp MINUS &kp KPLS  &kp LCUR  &kp RCUR  &kp PIPE
+&trans     &ext_power EP_ON  &ext_power EP_OFF  &trans       &trans       &trans    &trans   &trans    &trans    &kp MINUS &kp KPLS  &kp LCUR  &kp RCUR  &kp PIPE
                              &trans             &trans       &trans       &trans                       &trans    &trans    &trans    &trans
 			>;
 

app/dts/behaviors.dtsi

@@ -9,3 +9,4 @@
 #include <behaviors/sensor_rotate_key_press.dtsi>
 #include <behaviors/rgb_underglow.dtsi>
 #include <behaviors/bluetooth.dtsi>
+#include <behaviors/ext_power.dtsi>

app/dts/behaviors/ext_power.dtsi

@@ -0,0 +1,9 @@
+/ {
+	behaviors {
+		ext_power: behavior_ext_power {
+			compatible = "zmk,behavior-ext-power";
+			label = "EXT_POWER_BEHAVIOR";
+			#binding-cells = <2>;
+		};
+	};
+};

app/dts/bindings/behaviors/zmk,behavior-ext-power.yaml

@@ -0,0 +1,10 @@
+#
+# Copyright (c) 2020, The ZMK Contributors
+# SPDX-License-Identifier: MIT
+#
+
+description: External power control Behavior
+
+compatible: "zmk,behavior-ext-power"
+
+include: two_param.yaml

app/include/dt-bindings/zmk/ext_power.h

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#define EXT_POWER_OFF_CMD 0
+#define EXT_POWER_ON_CMD 1
+
+/*
+ * Note: Some future commands might include additional parameters, so we
+ * defines these aliases up front.
+ */
+
+#define EP_ON EXT_POWER_ON_CMD 0
+#define EP_OFF EXT_POWER_OFF_CMD 0

app/src/behaviors/behavior_ext_power.c

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#define DT_DRV_COMPAT zmk_behavior_ext_power
+
+#include <device.h>
+#include <devicetree.h>
+#include <drivers/behavior.h>
+
+#include <dt-bindings/zmk/ext_power.h>
+
+#include <logging/log.h>
+LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
+
+#include <drivers/ext_power.h>
+
+static int on_keymap_binding_pressed(struct device *dev, u32_t position, u32_t command, u32_t arg) {
+    const struct device *ext_power = device_get_binding("EXT_POWER");
+    if (ext_power == NULL) {
+        LOG_ERR("Unable to retrieve ext_power device: %d", command);
+        return -EIO;
+    }
+    const struct ext_power_api *ext_power_api = ext_power->driver_api;
+
+    switch (command) {
+    case EXT_POWER_OFF_CMD:
+        return ext_power_api->disable(ext_power);
+    case EXT_POWER_ON_CMD:
+        return ext_power_api->enable(ext_power);
+    default:
+        LOG_ERR("Unknown ext_power command: %d", command);
+    }
+
+    return -ENOTSUP;
+}
+
+static int behavior_ext_power_init(struct device *dev) { return 0; };
+
+static int on_keymap_binding_released(struct device *dev, u32_t position, u32_t command,
+                                      u32_t arg) {
+    return 0;
+}
+
+static const struct behavior_driver_api behavior_ext_power_driver_api = {
+    .binding_pressed = on_keymap_binding_pressed,
+    .binding_released = on_keymap_binding_released,
+};
+
+DEVICE_AND_API_INIT(behavior_ext_power, DT_INST_LABEL(0), behavior_ext_power_init, NULL, NULL,
+                    APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,
+                    &behavior_ext_power_driver_api);