5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
31 lines
1006 B
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31 lines
1006 B
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=============
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PCMCIA Driver
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=============
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sysfs
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-----
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New PCMCIA IDs may be added to a device driver pcmcia_device_id table at
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runtime as shown below::
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echo "match_flags manf_id card_id func_id function device_no \
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prod_id_hash[0] prod_id_hash[1] prod_id_hash[2] prod_id_hash[3]" > \
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/sys/bus/pcmcia/drivers/{driver}/new_id
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All fields are passed in as hexadecimal values (no leading 0x).
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The meaning is described in the PCMCIA specification, the match_flags is
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a bitwise or-ed combination from PCMCIA_DEV_ID_MATCH_* constants
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defined in include/linux/mod_devicetable.h.
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Once added, the driver probe routine will be invoked for any unclaimed
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PCMCIA device listed in its (newly updated) pcmcia_device_id list.
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A common use-case is to add a new device according to the manufacturer ID
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and the card ID (form the manf_id and card_id file in the device tree).
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For this, just use::
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echo "0x3 manf_id card_id 0 0 0 0 0 0 0" > \
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/sys/bus/pcmcia/drivers/{driver}/new_id
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after loading the driver.
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