[RFC] driver core support for i2c bus and drivers
Mark D. Studebaker
mds at paradyne.com
Tue Mar 18 02:31:35 CET 2003
our userspace tools use the /proc/bus/i2c file and (of course) the entire
tree of exported sysctl info under /proc/sys/dev/sensors
(as implemented in i2c-proc.c).
Does your proposal or Cristoph's recent changes affect these?
Albert Cranford wrote:
> Greg KH wrote:
>>Here's a fairly small patch against 2.5.64 that adds initial driver core
>>support for the i2c code. It only has logic for the i2c bus, i2c bus
>>controllers, and i2c drivers, but it's a start :)
>>As an example, with this patch, the i2c-piix4 driver shows up in the pci
>>bus as (other devices omitted for clarity):
>>[greg at desk sys]$ tree bus/pci
>>| |-- 00:07.3 -> ../../../devices/pci0/00:07.3
>> |-- piix4 smbus
>> | `-- 00:07.3 -> ../../../../devices/pci0/00:07.3
>>And within that device, the first i2c bus is located:
>>[greg at desk sys]$ tree devices/pci0/00:07.3
>>| |-- name
>>| `-- power
>>And the i2c bus looks like:
>>[greg at desk sys]$ tree bus/i2c/
>> `-- EEPROM READER
>>I'll move on to adding i2c device support to the core, but that will be
>>a bit more work. Comments on this patch are appreciated.
>>p.s. Yes, I added the i2c-piix4 and i2c-ali15x3 and i2c-i801 drivers to
>>my kernel tree, from the i2c CVS tree, and tweaked them to actually work
>>properly. If someone wants those patches right now, please let me know.
> I like. The proc/bus directory was geting cluttered.
> I think the driver model would be a good for i2c/sensors.
> Do you have any input for isa already in your bag of
More information about the lm-sensors