Re: [RFC] media: thermal I2C cameras metadata

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On Tue, Jul 24, 2018 at 11:05:47PM -0700, Matt Ranostay wrote:
> On Mon, Jul 23, 2018 at 4:35 AM, Sakari Ailus <sakari.ailus@xxxxxx> wrote:
> > Hi Matt,
> >
> > On Sun, Jul 15, 2018 at 11:05:42PM -0700, Matt Ranostay wrote:
> >> Hello et all,
> >>
> >> So currently working with some thermal sensors that have coefficients
> >> that needs to be passed back to userspace that aren't related to the
> >> pixel data but are required to normalize to remove scan patterns and
> >> temp gradients. Was wondering the best way to do this, and hope it
> >> isn't some is kludge of the close captioning, or just passing raw data
> >> as another column line.
> >
> > Are you referring to the EEPROM content or something else?
> >
> > For EEPROM, I could think of just exposing the EEPROM to the user space
> > as-is using the NVMEM API. This information is very, very device specific
> > and therefore using a generic interface to access individual values there
> > isn't really useful.
> >
> 
> Actually that is okay for the EEPROM data that is per sensor, and
> nvram does seem like it would work.
> But there is per video frame data that is required along with the
> static EEPROM data to calculate the actual end result.

Could you point out what that might be on the datasheet?

-- 
Sakari Ailus
e-mail: sakari.ailus@xxxxxx



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