[coreboot] m57sli FAN control [was: GeForce 8600GT with coreboot]

[Ward Vandewege]

On Sat, Feb 23, 2008 at 12:10:48AM +0100, Carl-Daniel Hailfinger wrote:
>>     /* set the correct sensor types 1,2 thermistor; 3 diode */
>>     pnp_write_index(base, 0x51, 0x1c);
>>     /* set the 'zero' voltage for diode type sensor */
>>     pnp_write_index(base, 0x5c, 0x80);
>>     pnp_write_index(base, 0x56, 0xe5);
>>     pnp_write_index(base, 0x57, 0xe5);
>>     pnp_write_index(base, 0x59, 0xe5);
>>     pnp_write_index(base, 0x5c, 0x00);
>>     /* fan1 (controlled by temp3) control parameters */
>>     /* fan off limit */
>>     pnp_write_index(base, 0x60, 0xff);
>>     /* fan start limit */
>>     pnp_write_index(base, 0x61, 0x14);
>>     /* ???? */
>>     pnp_write_index(base, 0x62, 0x00);
>>     /* start PWM */
>>     pnp_write_index(base, 0x63, 0x27);
>>     /* smooth and slope PWM */
>>     pnp_write_index(base, 0x64, 0x90);
>>     /* direct-down and interval */
>>     pnp_write_index(base, 0x65, 0x03);
>>     /* fan1 auto controlled by temp3 */
>>     pnp_write_index(base, 0x15, 0x82);
>>     /* fan2 soft controlled, max speed */
>>     pnp_write_index(base, 0x16, 0x7f);
>>     /* fan3 soft controlled, 75% speed */
>>     pnp_write_index(base, 0x17, 0x60);
>>     /* all fans enable, fan1 ctl smart */
>>     pnp_write_index(base, 0x13, 0x71);
>>
>> Then the fan is properly controlled. BUT this stuff is far too mainboard
>> specific (as opposed to superio specific) to be in this file. It should
>> be in a file in the mainboard/gigabyte/m57sli directory (probably even
>> V2.0 specific). But I wouldn't know how to link it in so it gets called
>> in the ec_init routine. Do you have some suggestions?
>> Maybe there is a way to put it in the Config.lb file?
>>   
>
> Ronald,
>
> you did great work tracking this down. Congratulations!
> We have to make sure we can handle such settings in v3 easily.
>
> There is another possible problem with fan settings: Do they belong to (in 
> the sense of copyright) the mainboard vendor or the BIOS vendor? I don't 
> want to get nasty letters from anyone.

I think that's going too far. This stuff comes straight from the superio
datasheet (check out the comments). There's no way anyone can claim copyright
on a bunch of configuration settings imo.

Thanks,
Ward.

-- 
Ward Vandewege <ward at fsf.org>
Free Software Foundation - Senior System Administrator