[lm-sensors] w83627hf.c pwm frequency patch

[lm-sensors] w83627hf.c pwm frequency patch

[com.ea]

Hello guys,

I came back home for a few days and could test the changes I made to the driver to support the pwm
frequency registers. Anyway I only have a w83697hf at hand to make the tests, and the registers in
627hf are a bit different. Does someone want to test it?

Btw, is it ok if I send a patch against 2.6.21.1?

Carlos

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Re: [lm-sensors] w83627hf.c pwm frequency patch

[Guillaume Millet]

Hi

com.ea a écrit :
Does someone want to test it?

I tested with *sucess* your driver, compiled with 2.6.20-15-generic 
kernel headers (ubuntu feisty), for my w83697hf chip.

Some remarks.
Under Windows, MSI proposes CoreCenter utility which has two modes, 
either auto (maybe "thermal cruise" or "fan speed cruise" mode) either 
fix with 8 levels. With SpeedFan, I noted pwm#_freq that CoreCenter 
associates with a fix level and the range of fan rpm :

level pwm1_freq(kHz) fan rpm    pwm1
8/8   93.8           2678-2721  128-255
7/8   93.8           2596-2636  32-64
6/8   93.8           2481-2518  5-8
5/8   46.9           2250-2311  2
4/8   31.1           2163-2191  1
3/8   18.8           1939-2008  1
2/8   11.7           1776-1834  1
1/8   6.3                <1520  1

I wrote on the right the pwm on lm_sensors that gives about the same fan 
rpm.
Lastly, under 1520 rpm, fan1_input is wrong (the same under Windows).

Regards,
Guillaume


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Re: [lm-sensors] w83627hf.c pwm frequency patch

[Jean Delvare]

Hi Carlos,

On Sat, 12 May 2007 11:05:39 +0200, com.ea wrote:
> Hello guys,
> 
> I came back home for a few days and could test the changes I made to the driver to support the pwm
> frequency registers. Anyway I only have a w83697hf at hand to make the tests, and the registers in
> 627hf are a bit different. Does someone want to test it?

Unfortunately I have a W83627THF variant, it uses DC for fan speed
control, so obviously your work won't have any effect on my chip.

> Btw, is it ok if I send a patch against 2.6.21.1?

No, please send a patch against 2.6.22-rc1 or later. The w83627hf
driver received a huge update between 2.6.21 and 2.6.22-rc1.

-- 
Jean Delvare

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