+/**
+ * cros_ec_hello() - Send a hello message
+ *
+ * Sends a message with a fixed input value and checks that the expected output
+ * value is received
+ *
+ * @dev: CROS-EC device
+ * @handshakep: If non-NULL, returns received handshake value on error
+ * @return 0 if OK, -ve on error
+ */
+int cros_ec_hello(struct udevice *dev, uint *handshakep);
+
+/**
+ * cros_ec_get_features() - Get the set of features provided by the EC
+ *
+ * See enum ec_feature_code for the list of available features
+ *
+ * @dev: CROS-EC device
+ * @featuresp: Returns a bitmask of supported features
+ * @return 0 if OK, -ve on error
+ */
+int cros_ec_get_features(struct udevice *dev, u64 *featuresp);
+
+/**
+ * cros_ec_check_feature() - Check if a feature is supported
+ *
+ * @dev: CROS-EC device
+ * @feature: Feature number to check (enum ec_feature_code)
+ * @return true if supported, false if not, -ve on error
+ */
+int cros_ec_check_feature(struct udevice *dev, uint feature);
+
+/**
+ * cros_ec_get_switches() - Get switches value
+ *
+ * @dev: CROS-EC device
+ * @return switches value, or -ENOSYS if not supported, or other -ve value on
+ * other error
+ */
+int cros_ec_get_switches(struct udevice *dev);
+
+/**
+ * cros_ec_vstore_supported() - Check if vstore is supported
+ *
+ * @dev: CROS-EC device
+ * @return false if not supported, true if supported, -ve on error
+ */
+int cros_ec_vstore_supported(struct udevice *dev);
+
+/**
+ * cros_ec_vstore_info() - Get vstore information
+ *
+ * @dev: CROS-EC device
+ * @lockedp: mask of locked slots
+ * @return number of vstore slots supported by the EC,, -ve on error
+ */
+int cros_ec_vstore_info(struct udevice *dev, u32 *lockedp);
+
+/**
+ * cros_ec_vstore_read() - Read data from EC vstore slot
+ *
+ * @dev: CROS-EC device
+ * @slot: vstore slot to read from
+ * @data: buffer to store read data, must be EC_VSTORE_SLOT_SIZE bytes
+ * @return 0 if OK, -ve on error
+ */
+int cros_ec_vstore_read(struct udevice *dev, int slot, uint8_t *data);
+
+/**
+ * cros_ec_vstore_write() - Save data into EC vstore slot
+ *
+ * The maximum size of data is EC_VSTORE_SLOT_SIZE. It is the caller's
+ * responsibility to check the number of implemented slots by querying the
+ * vstore info.
+ *
+ * @dev: CROS-EC device
+ * @slot: vstore slot to write into
+ * @data: data to write
+ * @size: size of data in bytes
+ * @return 0 if OK, -ve on error
+ */
+int cros_ec_vstore_write(struct udevice *dev, int slot, const uint8_t *data,
+ size_t size);
+
+/**
+ * cros_ec_read_batt_charge() - Read the battery-charge state
+ *
+ * @dev: CROS-EC device
+ * @chargep: Return battery-charge state as a percentage
+ */
+int cros_ec_read_batt_charge(struct udevice *dev, uint *chargep);
+