Hello Jan,
08.02.2017 14:14, Jan Petrouš wrote:
[...]
On 8 February 2017 at 13:45, Michael Thayer <[email protected]
<mailto:[email protected]>> wrote:
[...]
I'm afraid I will have to ask for a bit of clarification there. My
understanding of a frame buffer is an area of (usually video) memory
representing the image shown on a screen. You can have more or less as
many of those as will fit into video memory and flip between them. You
can also have up to 32 virtual screens (the hardware supports 64).
[...]
Ok, I might describe it vague, so yes - I need more virtual screens each
of them with support of framebuffer. So if I enable, for ex. 4 screens
(or monitors?), then I expect to have also /dev/fb0 - /dev/fb3 devices,
writing to which will be displayed on appropriate virtual screen.
[...]
That is less vague now - you mean Linux frame buffer devices. Currently
no plans for that, but our driver code is probably not the right place
to do it anyway: we use the generic fbdev-on-KMS wrapper in the Linux
kernel, so unless we are using it wrongly in some way (and I just
checked that my two-screen host also only provides one fbdev device) you
would need to talk to the kernel drm maintainers about it[1].
Regards
Michael
[1] https://lists.freedesktop.org/archives/dri-devel/
--
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