Re: [PATCH v2] hwmon: Add LTC2990 sensor driver

[Guenter Roeck]

On 01/13/2016 05:51 AM, Mike Looijmans wrote:
> On 13-01-16 14:24, Guenter Roeck wrote:
> > On 01/13/2016 03:05 AM, Mike Looijmans wrote:
> > > This adds support for the Linear Technology LTC2990  I2C System Monitor.
> > > The LTC2990 supports a combination of voltage, current and temperature
> > > monitoring. This driver currently only supports reading two currents
> > > by measuring two differential voltages across series resistors, in
> > > addition to the Vcc supply voltage and internal temperature.
> > >
> > > This is sufficient to support the Topic Miami SOM which uses this chip
> > > to monitor the currents flowing into the FPGA and the CPU parts.
> > >
> > > Signed-off-by: Mike Looijmans <mike.looijmans@xxxxxxxx>
> >
> > Mike,
> >
> > That looks much better. Can you send me the output of i2cdump for the chip ?
> > That would help me writing module test code for it.
>
> I'm kinda interested into how that would work.
https://github.com/groeck/module-tests

> I'll have to remove the driver first to get i2cdump to work on the chip. I cannot force a device removal from user space while running, can I?
> And i suppose you want a dump of a chip in running status? (On boot, all are registers are simply set to zero)

Just use i2cdump -f while the driver is active.

Thanks,
Guenter