[lm-sensors] [PATCH] Add MAX6650 support

[Jean Delvare]

On Tue, 27 Feb 2007 16:21:17 +0100, Matej Kenda wrote:
> Hi Hans,
> 
> I have tried the driver with on kernel 2.6.20.1 for platform ARM (processor 
> PXA255) to get fan speeds from the chip max6651.
> 
> It seems that the driver works, because it exports the values in /sys file 
> system.
> 
> I have few small comments on the implementation:
> 
> * use mutex instead of semaphore

This was fixed in the second version of the driver (posted by
Hans-Jürgen on February 12th.)

> * define i2c driver ID in the include/i2c-id.h

Even better, don't set an ID if you don't need it.

> However I have noticed the following issue, which might be related to the 
> driver of libsensors. Whenever I issue the command sensors to display values 
> of the fans, I get an error:
> 
> $ sensors
> max1617a-i2c-0-18
> Adapter: pxa2xx-i2c
> Main PCB:    +40 C  (low  =    +0 C, high =   +50 C)
> 
> max1617a-i2c-0-29
> Adapter: pxa2xx-i2c
> Main PCB:    +38 C  (low  =    +0 C, high =   +50 C)
> 
> max6650-i2c-0-48
> Adapter: pxa2xx-i2c
> ERROR: Can't get FAN1 data!
> ERROR: Can't get FAN2 data!
> ERROR: Can't get FAN3 data!
> ERROR: Can't get FAN4 data!
> 
> max6650-i2c-0-4b
> Adapter: pxa2xx-i2c
> ERROR: Can't get FAN1 data!
> ERROR: Can't get FAN2 data!
> ERROR: Can't get FAN3 data!
> ERROR: Can't get FAN4 data!
> 
> $ sensors --version
> sensors version 2.10.2 with libsensors version 2.10.2
> 
> I tried to rename entries that the driver creates from fan0-fan3 to fan1-fan4 
> as used by the libsensors and sensors, but that didn't help.

The files should actually be named fan1_input to fan4_input (for
measured values.)

> Did you have to modify the (lib)sensors in any way to display the values?

You shouldn't need to.

-- 
Jean Delvare