From: Guenter Roeck <guenter.roeck@ericsson.com>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] Lack of fan sensor output after Ubuntu upgrade
Date: Mon, 13 Sep 2010 17:24:32 +0000 [thread overview]
Message-ID: <20100913172432.GC1092@ericsson.com> (raw)
In-Reply-To: <201009101529.26294.larsivar@igesund.net>
On Mon, Sep 13, 2010 at 01:02:06PM -0400, Jean Delvare wrote:
> On Mon, 13 Sep 2010 09:13:49 -0700, Guenter Roeck wrote:
> > It looks like data is passed between 8031 and host using LDA 11h and/or 12h
> > (power management). However, if those LDAs are active, it does not mean that
> > ADCs or fan control is active. The datasheet does not specify details of ADC
> > and fan control communication between host and 8031; that seems to be microcode
> > specific. Also, it looks like the 8031 code is system specific and not provided
> > by the chip vendor. So it might not even be possible to obtain ADC and fan control
> > status.
> >
> > Or, of course, I might simply be missing something.
> >
> > For sensors-detect, we could possibly tag ADC and fan control support to
> > LDA 11h and/or 12h. Would that make sense ?
>
> If there's hope to ever write a driver for this, yes it makes sense. If
> not, we're probably better off just claiming that the device has no
> monitoring features.
>
After browsing through the datasheet, I don't think there is hope to ever
write a driver for this chip. I'll update sensors-detect to reflect this.
Guenter
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next prev parent reply other threads:[~2010-09-13 17:24 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-10 13:29 [lm-sensors] Lack of fan sensor output after Ubuntu upgrade Lars Ivar Igesund
2010-09-10 16:15 ` Guenter Roeck
2010-09-11 8:53 ` Jean Delvare
2010-09-11 9:03 ` Jean Delvare
2010-09-11 14:11 ` Guenter Roeck
2010-09-12 19:32 ` Guenter Roeck
2010-09-13 6:44 ` Lars Ivar Igesund
2010-09-13 8:05 ` Jean Delvare
2010-09-13 14:17 ` Guenter Roeck
2010-09-13 14:43 ` Jean Delvare
2010-09-13 16:13 ` Guenter Roeck
2010-09-13 17:02 ` Jean Delvare
2010-09-13 17:24 ` Guenter Roeck [this message]
2010-09-13 18:29 ` Guenter Roeck
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