[PATCH RFC 102/111] staging: etnaviv: separate GPU pipes from execution state

[Christian Gmeiner]

2015-04-02 18:37 GMT+02:00 Russell King - ARM Linux <linux at arm.linux.org.uk>:
> On Thu, Apr 02, 2015 at 05:30:44PM +0200, Lucas Stach wrote:
>> While this isn't the case on i.MX6 a single GPU pipe can have
>> multiple rendering backend states, which can be selected by the
>> pipe switch command, so there is no strict mapping between the
>> user "pipes" and the PIPE_2D/PIPE_3D execution states.
>
> This is good, because on Dove we have a single Vivante core which
> supports both 2D and 3D together.  It's always bugged me that
> etnadrm has not treated cores separately from their capabilities.
>

Today I finally got the idea how this multiple pipe stuff should be
done the right way - thanks Russell.
So maybe you/we need to rework how the driver is designed regarding
cores and pipes.

On the imx6 we should get 3 device nodes each only supporting one pipe
type. On the dove we
should get only one device node supporting 2 pipes types. What do you think?

greets
--
Christian Gmeiner, MSc

https://soundcloud.com/christian-gmeiner