[libcamera-devel] [PATCH v2] libcamera: device_enumerator: extend documentation of DeviceMatch

Niklas Söderlund niklas.soderlund at ragnatech.se
Tue Jan 22 15:07:14 CET 2019


Hello,

On 2019-01-22 15:50:55 +0200, Laurent Pinchart wrote:
> Hi Niklas,
> 
> On Tue, Jan 22, 2019 at 01:58:08PM +0100, Niklas Söderlund wrote:
> > On 2019-01-21 01:06:43 +0200, Laurent Pinchart wrote:
> > > On Sun, Jan 20, 2019 at 03:04:35PM +0100, Niklas Söderlund wrote:
> > >> Extend the document of the intended usage of DeviceMatch need for
> > > 
> > > s/document/documentation/
> > > 
> > >> information to correctly function to find a uniquely identifiable media
> > > 
> > > I'm not sure what you meant by the "need for information to correctly
> > > function".
> > 
> > How about,
> > 
> > Extend the documentation of the intended usage of DeviceMatch. The 
> > DeviceMatch needs enough information to be able to uniquely identify a 
> > specific media device.
> 
> Much better, thanks.

Thanks,

This patch is now merged to master.

> 
> > >> device.
> > >> 
> > >> Signed-off-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>
> > >> ---
> > >> * Changes since v1
> > >> - Rephrased most of it after review comments from Laurent, Thanks!
> > >> 
> > >>  src/libcamera/device_enumerator.cpp | 12 ++++++++++++
> > >>  1 file changed, 12 insertions(+)
> > >> 
> > >> diff --git a/src/libcamera/device_enumerator.cpp b/src/libcamera/device_enumerator.cpp
> > >> index 55c510e3b79a415b..d41e1e580b3451ab 100644
> > >> --- a/src/libcamera/device_enumerator.cpp
> > >> +++ b/src/libcamera/device_enumerator.cpp
> > >> @@ -52,6 +52,18 @@ namespace libcamera {
> > >>   *
> > >>   * The description is meant to be filled by pipeline managers and passed to a
> > >>   * device enumerator to find matching media devices.
> > >> + *
> > >> + * A DeviceMatch is created with a specific Linux device driver in mind,
> > >> + * therefore the name of the driver is a required property. One or more Entity
> > >> + * names can be added as as match criteria.
> > > 
> > > s/as as/as/
> > > 
> > >> + *
> > >> + * Pipeline handlers are recommended to add entities to DeviceMatch as
> > >> + * appropriare to ensure that the media device they need can be uniquely
> > >> + * identified. This is useful  when the corresponding kernel driver can produce
> > > 
> > > s/  / /
> > > 
> > >> + * different graphs, for instance as a result of different driver versions or
> > >> + * hardware configurations, and not all those graphs are suitable for a pipeline
> > >> + * handler.
> > >> + *
> > > 
> > > s/^ \*\n//
> > > 
> > > With these fixed,
> > > 
> > > Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> > > 
> > >>   */
> > >>  
> > >>  /**
> 
> -- 
> Regards,
> 
> Laurent Pinchart

-- 
Regards,
Niklas Söderlund


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