driver.rst (1006B)
1============= 2PCMCIA Driver 3============= 4 5sysfs 6----- 7 8New PCMCIA IDs may be added to a device driver pcmcia_device_id table at 9runtime as shown below:: 10 11 echo "match_flags manf_id card_id func_id function device_no \ 12 prod_id_hash[0] prod_id_hash[1] prod_id_hash[2] prod_id_hash[3]" > \ 13 /sys/bus/pcmcia/drivers/{driver}/new_id 14 15All fields are passed in as hexadecimal values (no leading 0x). 16The meaning is described in the PCMCIA specification, the match_flags is 17a bitwise or-ed combination from PCMCIA_DEV_ID_MATCH_* constants 18defined in include/linux/mod_devicetable.h. 19 20Once added, the driver probe routine will be invoked for any unclaimed 21PCMCIA device listed in its (newly updated) pcmcia_device_id list. 22 23A common use-case is to add a new device according to the manufacturer ID 24and the card ID (form the manf_id and card_id file in the device tree). 25For this, just use:: 26 27 echo "0x3 manf_id card_id 0 0 0 0 0 0 0" > \ 28 /sys/bus/pcmcia/drivers/{driver}/new_id 29 30after loading the driver.