linux-kernel - Re: [PATCH v2 3/5] usb: pd: Add helper macro to get Type C cable speed

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Message-ID: <ZPWDNLoxq22bL9gM@kuha.fi.intel.com>
Date:   Mon, 4 Sep 2023 10:11:48 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Utkarsh Patel <utkarsh.h.patel@...el.com>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        pmalani@...omium.org, chrome-platform@...ts.linux.dev,
        andriy.shevchenko@...ux.intel.com, bleung@...omium.org
Subject: Re: [PATCH v2 3/5] usb: pd: Add helper macro to get Type C cable
 speed

On Mon, Sep 04, 2023 at 10:08:42AM +0300, Heikki Krogerus wrote:
> On Wed, Aug 30, 2023 at 03:39:48PM -0700, Utkarsh Patel wrote:
> > Added a helper macro to get the Type C cable speed when provided the
> > cable VDO.
> > 
> > Signed-off-by: Utkarsh Patel <utkarsh.h.patel@...el.com>
> 
> Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> 
> > ---
> > Changes in v2:
> > - This change is being added as new patch in this series.
> > 
> >  include/linux/usb/pd_vdo.h | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/include/linux/usb/pd_vdo.h b/include/linux/usb/pd_vdo.h
> > index b057250704e8..3a747938cdab 100644
> > --- a/include/linux/usb/pd_vdo.h
> > +++ b/include/linux/usb/pd_vdo.h
> > @@ -376,6 +376,7 @@
> >  	 | ((vbm) & 0x3) << 9 | (sbu) << 8 | (sbut) << 7 | ((cur) & 0x3) << 5	\
> >  	 | (vbt) << 4 | (sopp) << 3 | ((spd) & 0x7))
> >  
> > +#define VDO_TYPEC_CABLE_SPEED(vdo)	((vdo) & 0x7)
> >  #define VDO_TYPEC_CABLE_TYPE(vdo)	(((vdo) >> 18) & 0x3)

Hold on! You are not using this anywhere in the patch set?

Since this is just a helper, I think it would be appropriate to
introduce it together with a user for it.

thanks,

-- 
heikki