On Wed, Jan 28, 2015 at 12:56:06PM +0000, Ian Molton wrote:

On 28/01/15 12:52, Sascha Hauer wrote:

...

Hi Ian,

On Wed, Jan 28, 2015 at 12:08:19PM +0000, Ian Molton wrote:

...

Hi,

Can anyone tell me where best to follow / contribute to *mainline* kernel based imx6 graphics stuff?

I'm currently running a 3.19-rc kernel with imx6 drm (fbdev emulation) and it works, but I'm seeing segfaults from Xfbdev.

Presumably, theres a proper DRM/DRI X driver to go with the kernel bits?

There is the xf86modesetting driver:

http://cgit.freedesktop.org/xorg/driver/xf86-video-modesetting/

There's no dedicated i.MX X driver that works with imx-drm.

Im not currently "up" on how the whole stack works - is this driver generic to anything using kms? do I still need fbdev?

The xf86modesetting driver should work with any kms driver (though it's been some time since I last tested it with imx-drm) You won't need fbdev, but without it the kernel does not activate the display during boot, so it will just stay dark until X starts.

Is there a good overview of things, particularly wrt. imx6?

Not that I know of, at least there's no i.MX specific drm documentation.

Sascha