Re: [lm-sensors] w83793 driver for RHEL 5.2 x86_64

Re: [lm-sensors] w83793 driver for RHEL 5.2 x86_64

[Rudolf Marek]

Hi,

Please CC the lm-sensors list.

Well the new version is in Linux kernel 2.6.20. Please try with some more new 
version of kernel. What motherboard model/manufacturer it is?

In the meanwhile please can you try as root:

rmmod w83793
modprobe i2c-dev
i2cdump 0 0x2f

It should dump raw register data of the chip.

Thanks,
Rudolf



maluyao napsal(a):
> Hi
> 
> I'm using RHEL 5.3 X86_64.The kernel version is 2.6.18-128.el5. The 
> lm_sensors is  3.0.2 and/or 2.10.7-4.el5.
> 
> I got a drvier code from here :
> http://jdelvare.pck.nerim.net/sensors/w83793/
> 
> This driver works not so fine because  some of temperature show me -1°C  
> sometimes.
> for example:
> 
> w83793-i2c-0-2f
> Adapter: SMBus I801 adapter at 1100
> CPU1 Temp:    -1.8°C  (high =  -1.0°C, hyst =  -1.0°C)  ALARM  sensor = 
> Intel PECI
> CPU2 Temp:    -1.8°C  (high =  -1.0°C, hyst =  -1.0°C)  ALARM  sensor = 
> Intel PECI
> temp3:        -1.8°C  (high =  -1.0°C, hyst =  -1.0°C)  ALARM  sensor = 
> Intel PECI
> temp4:        -1.8°C  (high =  -1.0°C, hyst =  -1.0°C)  ALARM  sensor = 
> Intel PECI
> temp5:        -1.0°C  (high =  -1.0°C, hyst =  -1.0°C)  ALARM  sensor = 
> thermistor
> beep_enable:enabled
> 
> 
> Have you have  new driver for this version of Linux Kernel ?
> 
> Best Regards
> 
> maluyao@gmail.com <mailto:maluyao@gmail.com>
> 

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Re: [lm-sensors] w83793 driver for RHEL 5.2 x86_64

[Rudolf Marek]

Hi,

Please CC the list!

maluyao napsal(a):
> My blade server is SuperMicro. The motherboard is B7DBE.
> 
> While run "i2cdump 0 0x2f" , it show me :
> 
> No size specified (using byte-data access)
> Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or 
> directory

You dont have device nodes in /dev/  for i2c
Can you create them?

crw-rw---- 1 root root 89, 0 2009-02-07 19:37 /dev/i2c-0


> I update w83793.c from kernel-2.6.28  and the proble still occur.

try to unload the "thermal" module from acpi.

rmmod thermal
sensors

> while I try to compiling w83793.c form 2.6.27.18. It show me too many
> error. I thinks something conflict with kernel-2.6.18-128.el5 .

Yes this is expected. You need to use version which is in the kernel.

Rudolf


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Re: [lm-sensors] w83793 driver for RHEL 5.2 x86_64

[Rudolf Marek]

maluyao napsal(a):
> This list ?
> 

yes its ok

> ls -l   /dev/i2c-*
> crw------- 1 root root 89, 0 Feb 19 13:08 /dev/i2c-0
> crw------- 1 root root 89, 1 Feb 19 13:08 /dev/i2c-1
> crw------- 1 root root 89, 2 Feb 19 13:08 /dev/i2c-2
> crw------- 1 root root 89, 3 Feb 19 13:08 /dev/i2c-3
> crw------- 1 root root 89, 4 Feb 19 13:08 /dev/i2c-4
> crw------- 1 root root 89, 5 Feb 19 13:08 /dev/i2c-5
> crw------- 1 root root 89, 6 Feb 19 13:08 /dev/i2c-6
> crw------- 1 root root 89, 7 Feb 19 13:08 /dev/i2c-7
> 
> dmesg |tail -n 1
> w83793 0-002f: set bank to 0 failed, fall back to bank 2, read reg 0x57 error

huh intressting message,

> 
> i2cdump 0 0x2f
> 
> No size specified (using byte-data access)
> Error: Could not set address to 0x2f: Device or resource busy

you need to unload the w83793
module (rmmod w83793)

Also please try to poweroff whole machine, unplug the power cord and run the 
i2c dump again.(The I2C bus is powered on even if the machine is off)
Ofcourse without driver loaded.

 From now it seems there is something wrong with the i2c bus.

Rudolf




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