[PATCH] drm: Harmonize CIK ASIC support in radeon and amdgpu (v2)

[Michel Dänzer]

On 22/04/17 02:05 AM, Felix Kuehling wrote:
> __setup doesn't work in modules.

Right. We could build something like
drivers/video/fbdev/core/fb_cmdline.c:video_setup() into the kernel to
handle this, but it's a bit ugly, which is one reason why I was leaning
towards:


> s8250_options is only compiled if the driver is not a module.

That doesn't prevent us from using __module_param_call directly, does it?

Although, that still doesn't work as I envision if only one driver's
option is set e.g. in /etc/modprobe.d/*.conf .


So, I'm starting to think we need a shared module for this, which
provides one or multiple module parameters to choose which driver to use
for CIK/SI[0], and provides the result to the amdgpu/radeon drivers.
That might make things easier for amdgpu-pro / other standalone amdgpu
versions in the long run as well, as they could add files to
/etc/modprobe.d/ choosing themselves by default, without having to
blacklist radeon.

What do you guys think?


[0] or possibly even more fine-grained in the future

-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer