* i2c-dev
@ 2014-10-22 1:54 John de la Garza
2014-10-22 16:35 ` i2c-dev Paul Bolle
0 siblings, 1 reply; 6+ messages in thread
From: John de la Garza @ 2014-10-22 1:54 UTC (permalink / raw)
To: kernelnewbies
I have my kernel built with dev-i2c and i2c_i801 but do not have
a /dev entry.
lspci shows this:
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
dmesg shows this:
[ 1.566003] i801_smbus 0000:00:1f.3: enabling device (0000 -> 0003)
ls /sys/bus/i2c/devices/ shows nothing...
on running this on a MacBookPro6,2
What am I missing? Shouldn't I see a i2c device? I think SMBus is
a subset of i2c and I should be able to use that subset, right?
^ permalink raw reply [flat|nested] 6+ messages in thread
* i2c-dev
2014-10-22 1:54 i2c-dev John de la Garza
@ 2014-10-22 16:35 ` Paul Bolle
[not found] ` <20141022172729.GA3098@vega.jjdev.com>
0 siblings, 1 reply; 6+ messages in thread
From: Paul Bolle @ 2014-10-22 16:35 UTC (permalink / raw)
To: kernelnewbies
Having looked into this a bit, but failing to come up with something
helpful, I decided to ask some additional info.
On Tue, 2014-10-21 at 21:54 -0400, John de la Garza wrote:
> I have my kernel
Which version (roughly)?
> built with dev-i2c and i2c_i801
.config, please?
> but do not have
> a /dev entry.
>
> lspci shows this:
> 00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
What are the PCI vendor and device codes? See "lspci -nn".
> dmesg shows this:
> [ 1.566003] i801_smbus 0000:00:1f.3: enabling device (0000 -> 0003)
>
> ls /sys/bus/i2c/devices/ shows nothing...
>
> on running this on a MacBookPro6,2
>
> What am I missing? Shouldn't I see a i2c device? I think SMBus is
> a subset of i2c and I should be able to use that subset, right?
Paul Bolle
^ permalink raw reply [flat|nested] 6+ messages in thread
* i2c-dev
[not found] ` <20141022172729.GA3098@vega.jjdev.com>
@ 2014-10-23 18:15 ` Paul Bolle
2014-10-26 16:04 ` i2c-dev John de la Garza
0 siblings, 1 reply; 6+ messages in thread
From: Paul Bolle @ 2014-10-23 18:15 UTC (permalink / raw)
To: kernelnewbies
On Wed, 2014-10-22 at 13:27 -0400, John de la Garza wrote:
> On Wed, Oct 22, 2014 at 06:35:02PM +0200, Paul Bolle wrote:
> > Having looked into this a bit, but failing to come up with something
> > helpful, I decided to ask some additional info.
> >
> > On Tue, 2014-10-21 at 21:54 -0400, John de la Garza wrote:
> > > I have my kernel
> >
> > Which version (roughly)?
>
> Linux vega 3.18.0-rc1+ #71 SMP Wed Oct 22 00:49:21 EDT 2014 x86_64 GNU/Linux
> >
> > > built with dev-i2c and i2c_i801
> >
> > .config, please?
> >
> see below
>
> > > but do not have
> > > a /dev entry.
> > >
> > > lspci shows this:
> > > 00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
> >
> > What are the PCI vendor and device codes? See "lspci -nn".
> >
> 00:1f.3 SMBus [0c05]: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller [8086:3b30] (rev 06)
> > > dmesg shows this:
> > > [ 1.566003] i801_smbus 0000:00:1f.3: enabling device (0000 -> 0003)
I'm afraid I can't really help you here, sorry. That is, except for the
obvious question whether this is a regression (ie, do releases v3.17 or
earlier show something in /sys/bus/i2c/devices/?) or a configuration
issue (perhaps a distribution provided kernel does show what you want).
Hope this helps,
Paul Bolle
^ permalink raw reply [flat|nested] 6+ messages in thread
* i2c-dev
2014-10-23 18:15 ` i2c-dev Paul Bolle
@ 2014-10-26 16:04 ` John de la Garza
0 siblings, 0 replies; 6+ messages in thread
From: John de la Garza @ 2014-10-26 16:04 UTC (permalink / raw)
To: kernelnewbies
On Thu, Oct 23, 2014 at 08:15:53PM +0200, Paul Bolle wrote:
> I'm afraid I can't really help you here, sorry. That is, except for the
> obvious question whether this is a regression (ie, do releases v3.17 or
> earlier show something in /sys/bus/i2c/devices/?) or a configuration
> issue (perhaps a distribution provided kernel does show what you want).
>
I didn't have any devices drivers loaded for things that had
i2c devices. I loaded the i915 gpu driver and now I see stuff.
root at vega:/home/john/linux# i2cdetect -l
i2c-0 i2c i915 gmbus ssc I2C adapter
i2c-1 i2c i915 gmbus vga I2C adapter
i2c-2 i2c i915 gmbus panel I2C adapter
i2c-3 i2c i915 gmbus dpc I2C adapter
i2c-4 i2c i915 gmbus dpb I2C adapter
i2c-5 i2c i915 gmbus dpd I2C adapter
i2c-6 i2c DPDDC-B I2C adapter
^ permalink raw reply [flat|nested] 6+ messages in thread
* i2c-dev
2005-05-19 6:24 i2c-dev gianluca interbartolo
@ 2005-05-19 6:24 ` Mark Studebaker
0 siblings, 0 replies; 6+ messages in thread
From: Mark Studebaker @ 2005-05-19 6:24 UTC (permalink / raw)
To: lm-sensors
recent versions of sensors-detect should find the busses under /sys.
Get our latest userspace tools and it should work.
gianluca interbartolo wrote:
> Hi,
> I'm using kernel 2.6.4 and module i2c-viapro (I have an Asus A7V8X).
> When I load i2c-dev I get no error, but under /proc/bus there is no i2c
> directory. So using sensors-detect gives an error trying to open
> /proc/bus/i2c.
> Instead there is a /sys/bus/i2c directory, with subdirs that have no
> files. What does it mean? There is a different approach despite of
> documentation or a bug in i2c-dev?
> Bye,
>
> Gianluca Interbartolo
>
>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* i2c-dev
@ 2005-05-19 6:24 gianluca interbartolo
2005-05-19 6:24 ` i2c-dev Mark Studebaker
0 siblings, 1 reply; 6+ messages in thread
From: gianluca interbartolo @ 2005-05-19 6:24 UTC (permalink / raw)
To: lm-sensors
Hi,
I'm using kernel 2.6.4 and module i2c-viapro (I have an Asus A7V8X).
When I load i2c-dev I get no error, but under /proc/bus there is no i2c
directory. So using sensors-detect gives an error trying to open
/proc/bus/i2c.
Instead there is a /sys/bus/i2c directory, with subdirs that have no
files. What does it mean? There is a different approach despite of
documentation or a bug in i2c-dev?
Bye,
Gianluca Interbartolo
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-10-26 16:04 UTC | newest]
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2014-10-22 1:54 i2c-dev John de la Garza
2014-10-22 16:35 ` i2c-dev Paul Bolle
[not found] ` <20141022172729.GA3098@vega.jjdev.com>
2014-10-23 18:15 ` i2c-dev Paul Bolle
2014-10-26 16:04 ` i2c-dev John de la Garza
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2005-05-19 6:24 i2c-dev gianluca interbartolo
2005-05-19 6:24 ` i2c-dev Mark Studebaker
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