[Intel-gfx] [PATCH] drm/i915: Shuffle modeset reset handling around

[Daniel Vetter]

On Thu, Jan 16, 2014 at 4:24 PM, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> Currently we're doing the reset handling a bit late, and we're doing
> it both in the driver load code and on resume. This makes it unusable
> for e.g. resetting the panel power sequence state like Paulo wants to.
>
> Instead of adding yet another single-use callback shuffle things
> around:
> - Output handling code is responsible to reset/init all state on its
>   own at driver load time.
> - We call the reset functions much earlier, before we start using any
>   of the modeset code.
>
> Compared to Paulo's new ->resume callback the only difference in
> placement is that ->reset is still called without dev->struct_mutex
> held. Which is imo a feature.
>
> Cc: Paulo Zanoni <przanoni at gmail.com>
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

I've forgotten to mention: The LVDS restore code also wants these
semantics when we move the register restoring into intel_lvds.c.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch