New behavior for ext power control

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);