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02 December 2022, 17:28:11 UTC
Revision b07d68b5ca4d55a16fab223d63d5fb36f89ff42f authored by Linus Torvalds on 28 August 2007, 01:32:35 UTC, committed by Linus Torvalds on 28 August 2007, 01:32:35 UTC 
Linux 2.6.23-rc4
1 parent f99ba18
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Tip revision: b07d68b5ca4d55a16fab223d63d5fb36f89ff42f authored by Linus Torvalds on 28 August 2007, 01:32:35 UTC
Linux 2.6.23-rc4
Tip revision: b07d68b
driver.txt 
PCMCIA Driver
-------------


sysfs
-----

New PCMCIA IDs may be added to a device driver pcmcia_device_id table at
runtime as shown below:

echo "match_flags manf_id card_id func_id function device_no \
prod_id_hash[0] prod_id_hash[1] prod_id_hash[2] prod_id_hash[3]" > \
/sys/bus/pcmcia/drivers/{driver}/new_id

All fields are passed in as hexadecimal values (no leading 0x).
The meaning is described in the PCMCIA specification, the match_flags is
a bitwise or-ed combination from PCMCIA_DEV_ID_MATCH_* constants
defined in include/linux/mod_devicetable.h.

Once added, the driver probe routine will be invoked for any unclaimed
PCMCIA device listed in its (newly updated) pcmcia_device_id list.

A common use-case is to add a new device according to the manufacturer ID
and the card ID (form the manf_id and card_id file in the device tree).
For this, just use:

echo "0x3 manf_id card_id 0 0 0 0 0 0 0" > \
        /sys/bus/pcmcia/drivers/{driver}/new_id

after loading the driver.
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