Re: [PATCH v9 0/2] [media] atmel-isc: add driver for Atmel ISC

["Wu, Songjun" <Songjun.Wu@microchip.com>]

On 8/12/2016 15:32, Hans Verkuil wrote:
> One quick question:
>
> On 08/11/2016 09:06 AM, Songjun Wu wrote:
>> The Image Sensor Controller driver includes two parts.
>> 1) Driver code to implement the ISC function.
>> 2) Device tree binding documentation, it describes how
>>    to add the ISC in device tree.
>>
>> Test result with v4l-utils.
>> # v4l2-compliance -f
>> v4l2-compliance SHA   : not available
>>
>> Driver Info:
>>         Driver name   : atmel_isc
>>         Card type     : Atmel Image Sensor Controller
>>         Bus info      : platform:atmel_isc f0008000.isc
>>         Driver version: 4.7.0
>>         Capabilities  : 0x84200001
>>                 Video Capture
>>                 Streaming
>>                 Extended Pix Format
>>                 Device Capabilities
>>         Device Caps   : 0x04200001
>>                 Video Capture
>>                 Streaming
>>                 Extended Pix Format
>>
>> Compliance test for device /dev/video0 (not using libv4l2):
>>
>> Required ioctls:
>>         test VIDIOC_QUERYCAP: OK
>>
>> Allow for multiple opens:
>>         test second video open: OK
>>         test VIDIOC_QUERYCAP: OK
>>         test VIDIOC_G/S_PRIORITY: OK
>>         test for unlimited opens: OK
>>
>> Debug ioctls:
>>         test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
>>         test VIDIOC_LOG_STATUS: OK (Not Supported)
>>
>> Input ioctls:
>>         test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
>>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>>         test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
>>         test VIDIOC_ENUMAUDIO: OK (Not Supported)
>>         test VIDIOC_G/S/ENUMINPUT: OK
>>         test VIDIOC_G/S_AUDIO: OK (Not Supported)
>>         Inputs: 1 Audio Inputs: 0 Tuners: 0
>>
>> Output ioctls:
>>         test VIDIOC_G/S_MODULATOR: OK (Not Supported)
>>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>>         test VIDIOC_ENUMAUDOUT: OK (Not Supported)
>>         test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
>>         test VIDIOC_G/S_AUDOUT: OK (Not Supported)
>>         Outputs: 0 Audio Outputs: 0 Modulators: 0
>>
>> Input/Output configuration ioctls:
>>         test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
>>         test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
>>         test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
>>         test VIDIOC_G/S_EDID: OK (Not Supported)
>>
>> Test input 0:
>>
>>         Control ioctls:
>>                 test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported)
>>                 test VIDIOC_QUERYCTRL: OK (Not Supported)
>>                 test VIDIOC_G/S_CTRL: OK (Not Supported)
>>                 test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported)
>>                 test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
>>                 test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
>>                 Standard Controls: 0 Private Controls: 0
>
> Can you confirm that the sensor subdevice you are using does not have any controls?
> I ask since that is fairly unusual, so I want to make sure that controls are really
> not supported in this setup.
>
Sorry for the late reply.
The subdevice I use supports controls, but I did not develop the v4l2 
controls in the sensor driver.
Should I add the v4l2 controls and test again?

> Regards,
>
> 	Hans
>