Re: [PATCH] hwmon: (it87) Drop uart6 condition for vin5&vin6 for IT8783F

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On Tue, 2012-05-15 at 14:21 -0400, Jean Delvare wrote:
> On Tue, 15 May 2012 19:25:03 +0200, Björn Gerhart wrote:
> > From: Bjoern Gerhart <oss@xxxxxxxxxxxxx>
> > 
> > Drop UART6 condition for IT8783F related to VIN5 and VIN6.
> > In case UART6 is routed via JP4 to a different set of pins,
> > VIN5 and VIN6 can be used at the same time.
> > 
> > diff -Naur a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
> > --- a/drivers/hwmon/it87.c	2012-05-15 16:53:07.156061059 +0200
> > +++ b/drivers/hwmon/it87.c	2012-05-15 17:19:31.717061875 +0200
> > @@ -1806,11 +1806,11 @@
> >  			sio_data->skip_pwm |= (1 << 1);
> >  
> >  		/* VIN5 */
> > -		if ((reg27 & (1 << 0)) || uart6)
> > +		if (reg27 & (1 << 0))
> >  			sio_data->skip_in |= (1 << 5); /* No VIN5 */
> >  
> >  		/* VIN6 */
> > -		if ((reg27 & (1 << 1)) || uart6)
> > +		if (reg27 & (1 << 1))
> >  			sio_data->skip_in |= (1 << 6); /* No VIN6 */
> >  
> >  		/*
> > 
> 
> What about FAN3_TAC? As I read the datasheet, it is also "freed" if
> UART6 is moved to pins 100-106. So I suspect we don't want to check for
> uart6 at all for the IT8783F.
> 
> This all would better be done directly in Guenter's patch, BTW, as it
> isn't upstream yet.
> 
Let me look at it again tonight. The fan3 test is "|| !uart6", so it is
the opposite. I am getting more and more confused :(. I'll have to
re-read the data sheet to see what is going on.

Guenter



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