RCCTL            1303 drivers/misc/cardreader/rtsx_pcr.c 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RCCTL, 0x01, 0x00);
RCCTL             535 drivers/staging/rts5208/rtsx_chip.c 	retval = rtsx_write_register(chip, RCCTL, 0x01, 0x00);