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https://github.com/lm-sensors/lm-sensors.git
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Mark D. Studebaker
81a7bd8025
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1426 7894878c-1315-0410-8ee3-d5d059ff63e0
67 lines
1.6 KiB
Plaintext
67 lines
1.6 KiB
Plaintext
SMBUS_ARP Driver
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-------------
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This is a demonstration driver which provides SMBus 2.0
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ARP services. It isn't much use except for testing SMBus 2.0
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ARP and PEC support in the i2c layer.
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It is NOT a normal 'chip' driver for a particular sensor device.
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If you don't know what SMBus ARP is you don't need this driver.
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Stability
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---------
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Beta.
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DETECTION
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-------------
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This driver requires SMBus 2.0 support in i2c-2.6.4 or higher.
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If your kernel does not have i2c-2.6.4 or higher the module
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will refuse to load.
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This driver will register itself on each i2c bus which
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supports SMBus Block Data transactions.
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USES
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----
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The module ARPs each supported bus when it is inserted
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(or after that when a i2c bus driver is inserted).
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It does not periodically re-ARP, and the i2c stack does not
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currently support SMBus Host Notify, so it will not detect
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hot-plugged devices.
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The smbus-arp module should be inserted before any chip modules
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so that it has an opportunity to assign addresses.
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/PROC ENTRIES
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-------------
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There are 8 entries in /proc, 0-7. Each is a 'slot'.
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If a chip has responded to ARP, it will appear in a 'slot'
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as follows. See the SMBus 2.0 Specification for details.
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value function
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1 SMBus address
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2 UDID Device Capabilities
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3 UDID Version / Revision
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4 UDID Vendor ID
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5 UDID Device ID
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6 UDID Interface
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7 UDID Subsystem Vendor ID
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8 UDID Subsystem Device ID
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9 UDID Vendor Specific ID
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To reassign a device to a different address, write
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that address to the slot. For example, 'echo 13 > 0'
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to reassign the device in slot 0 to address 13 (0x0d).
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TO DO
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-----
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lots
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Author/Maintainer
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-----------------
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Mark D. Studebaker (mdsxyz123@yahoo.com)
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