| Mauro Carvalho Chehab | 3bdab16 | 2019-06-12 14:52:53 -0300 | [diff] [blame] | 1 | ============= |
| Bernhard Walle | 6179b55 | 2007-05-06 14:48:44 -0700 | [diff] [blame] | 2 | PCMCIA Driver |
| Mauro Carvalho Chehab | 3bdab16 | 2019-06-12 14:52:53 -0300 | [diff] [blame] | 3 | ============= |
| Bernhard Walle | 6179b55 | 2007-05-06 14:48:44 -0700 | [diff] [blame] | 4 | |
| 5 | sysfs |
| 6 | ----- |
| 7 | |
| 8 | New PCMCIA IDs may be added to a device driver pcmcia_device_id table at |
| Mauro Carvalho Chehab | 3bdab16 | 2019-06-12 14:52:53 -0300 | [diff] [blame] | 9 | runtime as shown below:: |
| Bernhard Walle | 6179b55 | 2007-05-06 14:48:44 -0700 | [diff] [blame] | 10 | |
| Mauro Carvalho Chehab | 3bdab16 | 2019-06-12 14:52:53 -0300 | [diff] [blame] | 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 |
| Bernhard Walle | 6179b55 | 2007-05-06 14:48:44 -0700 | [diff] [blame] | 14 | |
| 15 | All fields are passed in as hexadecimal values (no leading 0x). |
| 16 | The meaning is described in the PCMCIA specification, the match_flags is |
| 17 | a bitwise or-ed combination from PCMCIA_DEV_ID_MATCH_* constants |
| 18 | defined in include/linux/mod_devicetable.h. |
| 19 | |
| 20 | Once added, the driver probe routine will be invoked for any unclaimed |
| 21 | PCMCIA device listed in its (newly updated) pcmcia_device_id list. |
| 22 | |
| 23 | A common use-case is to add a new device according to the manufacturer ID |
| 24 | and the card ID (form the manf_id and card_id file in the device tree). |
| Mauro Carvalho Chehab | 3bdab16 | 2019-06-12 14:52:53 -0300 | [diff] [blame] | 25 | For this, just use:: |
| Bernhard Walle | 6179b55 | 2007-05-06 14:48:44 -0700 | [diff] [blame] | 26 | |
| Mauro Carvalho Chehab | 3bdab16 | 2019-06-12 14:52:53 -0300 | [diff] [blame] | 27 | echo "0x3 manf_id card_id 0 0 0 0 0 0 0" > \ |
| 28 | /sys/bus/pcmcia/drivers/{driver}/new_id |
| Bernhard Walle | 6179b55 | 2007-05-06 14:48:44 -0700 | [diff] [blame] | 29 | |
| 30 | after loading the driver. |