[libcamera-devel] Compatibility with cameras

[Guido Körber]

We can see a device on the I2C. (Took a bit more testing to get the hardware to really respond…)

So will we need a specific kernel driver for that camera, or is there some way to handle it via a generic driver?



> Am 17.02.2022 um 17:43 schrieb Laurent Pinchart <laurent.pinchart at ideasonboard.com>:
> 
> Hi Guido,
> 
> On Thu, Feb 17, 2022 at 05:00:23PM +0100, Guido Körber wrote:
>> Is there a simple way to check if the hardware is present even if the camera is not detected by software?
>> I have set up a prototype with a hand soldered connector and would like to know if I did all the wiring correct.
> 
> You can use i2cdetect and i2cget ([1]) to talk to the sensor. You may
> need to first enable power by toggling the corresponding GPIO, which can
> also be done from userspace ([2]). Checking video transmission is more
> difficult, you will need to get at least the kernel driver for the
> sensor and Unicam up and running.
> 
> [1] https://manpages.debian.org/unstable/i2c-tools/i2cdetect.8.en.html
> [2] https://manpages.debian.org/experimental/gpiod/gpioset.1.en.html
> 
>>> Am 17.02.2022 um 14:09 schrieb Kieran Bingham:
>>> Quoting Guido Körber (2022-02-17 13:04:18)
>>>> 
>>>> I want to use libcamera on Raspberry with a camera that is not
>>>> explicitly supported by libcamera but does generic CSI-2. Will this
>>>> work, or do I need a camera specific plugin or something else?
>>> 
>>> You will likely need to make sure you have a relevant kernel driver, and
>>> may likely need to do some updates to libcamera, to manage the
>>> CameraSensorHelper classes.
>>> 
>>> You might also then want to follow the Raspberry Pi ISP tuning
>>> procedures.
>>> 
>>> https://datasheets.raspberrypi.com/camera/raspberry-pi-camera-guide.pdf
>>> 
>>> But yes, you should be able to get it to work.
> 
> -- 
> Regards,
> 
> Laurent Pinchart