linux-kernel - Re: [PATCH 1/2] drm/bridge: parade-ps8640: Use regmap APIs

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Date:   Thu, 9 Sep 2021 17:27:25 -0400
From:   Stephen Boyd <swboyd@...omium.org>
To:     Doug Anderson <dianders@...omium.org>
Cc:     Philip Chen <philipchen@...omium.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Jonas Karlman <jonas@...boo.se>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Robert Foss <robert.foss@...aro.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH 1/2] drm/bridge: parade-ps8640: Use regmap APIs

Quoting Doug Anderson (2021-09-09 14:14:29)
> On Thu, Sep 9, 2021 at 12:09 PM Stephen Boyd <swboyd@...omium.org> wrote:
> >
> >
> > Oh does this have register pages? regmap has support for pages where you
> > write some indirection register and then access the same i2c address for
> > the next page. This looks different though and has a different i2c
> > address for each page?
>
> I haven't looked in tons of detail, but I think the right solution
> here is a separate regmap config per page.

Yes. And then a different .max_register value for each config struct. A
different .name might be useful to indicate which page it is too.