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Mark D. Studebaker
34076ded72
Michael Hufer <michael.hufer@freenet.de> ------------------------ > First, I added a new mod parameter "reset_it87" which controls whether > or not the chip is reset on module load (modprobe it87 reset_it=1, > default) or not(modprobe it87 reset_it87=0). > Since this worked out quiet nicely I decided to go one step further > and also add the chips manual and automatic temperature controlled fan > speed features (PWM etc.). > > Finally I also updated the doc to document the new features. > > Attached is a diff against the current cvs version. ------------------------ Subject: Re: fan speed for it87?? chips added Date: Fri, 26 Sep 2003 23:28:35 +0200 From: Michael Hufer <michael.hufer@freenet.de> To: sensors@Stimpy.netroedge.com, Jean Delvare <khali@linux-fr.org> On Friday 26 September 2003 22:40, Jean Delvare wrote: > > I found and fixed the little problem I had with the original chip > > initialization. I can now load the module with reset_it87=0 and > > init=1 without messing up the settings of the power supply fan > > from the BIOS. It was quite simple after all. > > I'm interested in details, can you tell us what it was? Sure, it actually was something I introduced myself :-(. I initialized the fan_ctl register with (read_value & 0x8f | 0x77) to enable the smart guardian feature for all 3 fans. But the power supply fan does not support pwm. It can only be operated in on/off mode, i.e. bit 0 must be clear. I switched it back to the original (rv & 0x8f | 0x70 ) and everything is back to working. > > Do you want me to send the latest diff? > > Sure I want. Here it comes. git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2033 7894878c-1315-0410-8ee3-d5d059ff63e0