tg_setup_vertical_interrupt2_params
seq_state->steps[*seq_state->num_steps].params.tg_setup_vertical_interrupt2_params.tg = tg;
seq_state->steps[*seq_state->num_steps].params.tg_setup_vertical_interrupt2_params.start_line = start_line;
struct timing_generator *tg = params->tg_setup_vertical_interrupt2_params.tg;
int start_line = params->tg_setup_vertical_interrupt2_params.start_line;
struct tg_setup_vertical_interrupt2_params tg_setup_vertical_interrupt2_params;