linux/Documentation/pcmcia/driver.txt
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   1PCMCIA Driver
   2-------------
   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
  11echo "match_flags manf_id card_id func_id function device_no \
  12prod_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
  27echo "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.
  31
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