[Buildroot] [PATCH v2 1/2] libimxvpuapi: add new package
Arnout Vandecappelle
arnout at mind.be
Wed Feb 17 23:48:20 UTC 2016
On 17-02-16 13:42, Gary Bisson wrote:
> Hi Peter,
>
> On Wed, Feb 17, 2016 at 1:30 PM, Peter Seiderer <ps.report at gmx.net> wrote:
>> Hello Gary,
>>
>>> <snip>
>>>> No, working with boundarydevices linux-imx6-f4c8395 and original boundary config
>>>> and there is a '/dev/galcore' entry on the target...
>>>
>>> Yes but that is the problem. Please try again with
>>> BR2_PACKAGE_KERNEL_MODULE_IMX_GPU_VIV.
>>>
>>> As you know, 3D graphics libraries match a specific kernel driver.
>>> Since it was an issue for many people, Vivante started to provide a
>>> kernel module so you can easily have the latest driver on an older
>>> kernel.
>>>
>>> Since I've updated the graphics to the latest (5.0.11 p7.1), the
>>> driver inside the 3.14.28 kernel is outdated so you need to use the
>>> Vivante kernel module. I didn't for the selection of the kernel module
>>> when the libraries are selected since some kernels (3.14.52) have the
>>> correct driver built-in.
>>>
>>
>> Got it now, the missing part was:
>>
>> BR2_PACKAGE_KERNEL_MODULE_IMX_GPU_VIV=y
>>
>> Qt5 eglfs and gstreamer imxeglvivsink are working now...
>
> Good to hear!
>
>>> Sorry for the confusion but know that if you want to make sure the
>>> driver matches the user-space blobs, always select the Vivante kernel
>>> module as I'll make to always update both at the same time.
>>>
>>
>> Maybe a little hint in board/boundarydevices/nitrogen6x/readme.txt would be useful?
>
> Well it is not Nitrogen6x-specific, it applies to all i.MX6 platforms
> so I'm not sure where would be the best place to give this info apart
> from the help text. Thomas, any idea on this?
>
> Yocto is forcing the use of the Vivante kernel module, maybe we should
> do the same but I'm not fond of this approach.
We can't force select because BR2_PACKAGE_KERNEL_MODULE_IMX_GPU_VIV depends on
the kernel to be built. But we could do
select BR2_PACKAGE_KERNEL_MODULE_IMX_GPU_VIV if BR2_LINUX_KERNEL
I don't think this would be such a bad idea. Added size isn't really a big
deal. Of course, the user still has to load the module...
Regards,
Arnout
>
>> Many thanks for your support...
>
> No problem. Thanks for your valuable feedback!
>
> Regards,
> Gary
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--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven
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