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

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On Tue, 2020-09-29 at 23:30 +0300, Ville Syrjälä wrote:
> 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.
> 

Adding a comment on the top of jsl_get_combo_buf_trans() would help?
Otherwise Tejas you will need to rework this then.
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