+SR_PRIV int jds6600_identify(struct sr_dev_inst *sdi);
+SR_PRIV int jds6600_setup_devc(struct sr_dev_inst *sdi);
+
+SR_PRIV int jds6600_get_chans_enable(const struct sr_dev_inst *sdi);
+SR_PRIV int jds6600_get_waveform(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_get_frequency(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_get_amplitude(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_get_offset(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_get_dutycycle(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_get_phase_chans(const struct sr_dev_inst *sdi);
+
+SR_PRIV int jds6600_set_chans_enable(const struct sr_dev_inst *sdi);
+SR_PRIV int jds6600_set_waveform(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_set_frequency(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_set_amplitude(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_set_offset(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_set_dutycycle(const struct sr_dev_inst *sdi, size_t ch_idx);
+SR_PRIV int jds6600_set_phase_chans(const struct sr_dev_inst *sdi);