Re: [PATCH] omap2+: add drm device

Tomi Valkeinen
2012-05-24T12:13:08Z

[-- Attachment #1: Type: text/plain, Size: 806 bytes --]

On Thu, 2012-05-24 at 02:44 -0600, Rob Clark wrote:

> but other drivers *can* use tiler, thanks to dmabuf.. I have omap4iss
> v4l2 camera working w/ tiler buffers on my pandaboard, for example.
>
> Maybe fbdev is an exception to the rule because it has no way for
> userspace to pass it a buffer to use. But on the other hand it is a
> legacy API so I'm not sure if it is worth loosing too much sleep over
> that.

I'm not that familiar with dmabuf, but are you saying it's not possible
for a kernel driver to request the buffers? They _must_ come from the
userspace?

Anyway, even if it would be possible, if the tiler is a part of omapdrm
we need omapdrm to get and use the tiler buffers. And we can't have
omapdrm running when using omapfb, because they both use omapdss.

Tomi

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 836 bytes --]