int sd_select_card(struct rts51x_chip *chip, int select);
int reset_sd_card(struct rts51x_chip *chip);
int sd_switch_clock(struct rts51x_chip *chip);
-void sd_stop_seq_mode(struct rts51x_chip *chip);
int sd_rw(struct scsi_cmnd *srb, struct rts51x_chip *chip, u32 start_sector,
u16 sector_cnt);
void sd_cleanup_work(struct rts51x_chip *chip);
-int sd_power_off_card3v3(struct rts51x_chip *chip);
int release_sd_card(struct rts51x_chip *chip);
#ifdef SUPPORT_CPRM