+ const struct scpi_command *commands;
+ int (*probe_channels) (struct sr_dev_inst *sdi, struct sr_scpi_hw_info *hwinfo,
+ struct channel_spec **channels, unsigned int *num_channels,
+ struct channel_group_spec **channel_groups, unsigned int *num_channel_groups);
+ int (*init_acquisition) (const struct sr_dev_inst *sdi);
+ int (*update_status) (const struct sr_dev_inst *sdi);