+ /**
+ * Read the idcode of the target connected to the adapter
+ *
+ * If the adapter doesn't support idcode retrieval, this callback should
+ * store 0 to indicate a wildcard match.
+ *
+ * @param handle A pointer to the device-specific handle
+ * @param idcode Storage for the detected idcode
+ * @returns ERROR_OK on success, or an error code on failure.
+ */
+ int (*idcode) (void *handle, uint32_t *idcode);
+ /** */
+ int (*override_target) (const char *targetname);
+ /** */
+ int (*custom_command) (void *handle, const char *command);
+ /** */
+ int (*speed)(void *handle, int khz, bool query);
+ /**
+ * Configure trace parameters for the adapter
+ *
+ * @param handle A handle to adapter
+ * @param enabled Whether to enable trace
+ * @param pin_protocol Configured pin protocol
+ * @param port_size Trace port width for sync mode
+ * @param trace_freq A pointer to the configured trace
+ * frequency; if it points to 0, the adapter driver must write
+ * its maximum supported rate there
+ * @returns ERROR_OK on success, an error code on failure.
+ */
+ int (*config_trace)(void *handle, bool enabled, enum tpio_pin_protocol pin_protocol,
+ uint32_t port_size, unsigned int *trace_freq);
+ /**
+ * Poll for new trace data
+ *
+ * @param handle A handle to adapter
+ * @param buf A pointer to buffer to store received data
+ * @param size A pointer to buffer size; must be filled with
+ * the actual amount of bytes written
+ *
+ * @returns ERROR_OK on success, an error code on failure.
+ */
+ int (*poll_trace)(void *handle, uint8_t *buf, size_t *size);