[Intel-gfx] [PATCH v2] drm/i915/edp/jsl: Update vswing table for HBR and HBR2

[Ville Syrjälä]

On Tue, Sep 29, 2020 at 08:20:22PM +0000, Souza, Jose wrote:
> On Tue, 2020-09-29 at 23:02 +0300, Ville Syrjälä wrote:
> > On Tue, Sep 29, 2020 at 07:33:45PM +0000, Souza, Jose wrote:
> > > On Tue, 2020-09-29 at 17:41 +0530, Tejas Upadhyay wrote:
> > > > JSL has update in vswing table for eDP
> > > 
> > > Would be nice to mention in the commit description why PCH is being used, that would avoid Ville's question.
> > 
> > If the thing has nothing to do PCH then it should not use the PCH type
> > for the the check. Instead we should just do the EHL/JSL split.
> 
> In the first version Matt Roper suggested to use PCH to differentiate between EHL and JSL, Jani also agreed with this solution.This 2 PCHs can only be
> associate with EHL and JSL respectively, so no downsides here.

The downside is that the code makes no sense on the first glance.
It's going to generate a "wtf?" exception in the brain and require
me to take a second look to figure what is going on. Exception
handling is expensive and shouldn't be needed in cases where it's
trivial to make the code 100% obvious.

-- 
Ville Syrjälä
Intel