- sysfs entries for that w1 master are created
- the w1 bus is periodically searched for new slave devices
-When a device is found on the bus, w1 core checks if driver for it's family is
+When a device is found on the bus, w1 core checks if driver for its family is
loaded. If so, the family driver is attached to the slave.
If there is no driver for the family, default one is assigned, which allows to perform
almost any kind of operations. Each logical operation is a transaction
<xx-xxxxxxxxxxxxx> - a directory for a found device. The format is family-serial
bus - (standard) symlink to the w1 bus
driver - (standard) symlink to the w1 driver
+w1_master_add - Manually register a slave device
w1_master_attempts - the number of times a search was attempted
w1_master_max_slave_count
- the maximum slaves that may be attached to a master
w1_master_name - the name of the device (w1_bus_masterX)
+w1_master_pullup - 5V strong pullup 0 enabled, 1 disabled
+w1_master_remove - Manually remove a slave device
w1_master_search - the number of searches left to do, -1=continual (default)
w1_master_slave_count
- the number of slaves found
w1_master_timeout - the delay in seconds between searches
If you have a w1 bus that never changes (you don't add or remove devices),
-you can set w1_master_search to a positive value to disable searches.
+you can set the module parameter search_count to a small positive number
+for an initially small number of bus searches. Alternatively it could be
+set to zero, then manually add the slave device serial numbers by
+w1_master_add device file. The w1_master_add and w1_master_remove files
+generally only make sense when searching is disabled, as a search will
+redetect manually removed devices that are present and timeout manually
+added devices that aren't on the bus.
w1 slave sysfs interface
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff