int ivtv_cx25840(struct ivtv *itv, unsigned int cmd, void *arg);
int ivtv_saa7115(struct ivtv *itv, unsigned int cmd, void *arg);
int ivtv_saa7127(struct ivtv *itv, unsigned int cmd, void *arg);
int ivtv_cx25840(struct ivtv *itv, unsigned int cmd, void *arg);
int ivtv_saa7115(struct ivtv *itv, unsigned int cmd, void *arg);
int ivtv_saa7127(struct ivtv *itv, unsigned int cmd, void *arg);