tg_wait_for_state_params
seq_state->steps[*seq_state->num_steps].params.tg_wait_for_state_params.tg = tg;
seq_state->steps[*seq_state->num_steps].params.tg_wait_for_state_params.state = state;
struct timing_generator *tg = params->tg_wait_for_state_params.tg;
enum crtc_state state = params->tg_wait_for_state_params.state;
struct tg_wait_for_state_params tg_wait_for_state_params;