Re: libdrm and platform devices?

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On Fri, Mar 2, 2012 at 1:06 PM, Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote:
> On Fri, Mar 02, 2012 at 12:02:21PM +0000, Dave Airlie wrote:
>> >
>> > I have a drm device on the platform bus, similar to the exynos driver.
>> > right now libdrm (at least the tests included in libdrm) refuses to open
>> > the device because i915, nouveau, radeon and vmwgfx is all they know
>> > about. Looking at the libdrm code it is not obvious how to fix this
>> > (except for adding "exynos", "mydevice", "myotherdevice" to the module
>> > table which seems awkward and not very futureproof). Any hints or
>> > thoughts how to proceed here?
>>
>> libdrm tests aren't really used that much, and it might be easier to
>> just not care.
>>
>> people just hack on them for their platforms and sometimes someone
>> pushes one in.
>
> Ok, I can keep a local hack. What are your plans for the
> xf86-modesetting driver? It works nicely after I commented out some
> pci specific things and replaced drmOpen(NULL, BusID) with
> open("/dev/dri/card0", O_RDWR). Do you plan to continue on the driver
> and would accept patches for it?

might be why I added busid to the usb, my memory of why is hazy.

you should have been able to specify /dev/dri/card0 in the xorg.conf
Option "kmsdev"

and yes I'll continue working on it, I have to hook it in as a linux
fallback driver in the X server.

Dave.
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