linux-kernel - Re: [PATCH v2 1/2] drm/bridge: sii902x: Enable I/O and core VCC supplies if present

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Message-ID: <20201020150845.GA1913775@ravnborg.org>
Date:   Tue, 20 Oct 2020 17:08:45 +0200
From:   Sam Ravnborg <sam@...nborg.org>
To:     "Alex G." <mr.nuke.me@...il.com>
Cc:     devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Neil Armstrong <narmstrong@...libre.com>,
        David Airlie <airlied@...ux.ie>,
        Mark Brown <broonie@...nel.org>,
        Jonas Karlman <jonas@...boo.se>,
        open list <linux-kernel@...r.kernel.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Rob Herring <robh+dt@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Subject: Re: [PATCH v2 1/2] drm/bridge: sii902x: Enable I/O and core VCC
 supplies if present

Hi Alex.

On Tue, Oct 20, 2020 at 09:01:27AM -0500, Alex G. wrote:
> 
> 
> On 10/20/20 2:16 AM, Sam Ravnborg wrote:
> > Hi Alex.
> 
> [snip]
> 
> > > 
> > > 
> > > > diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
> > > > index 33fd33f953ec..d15e9f2c0d8a 100644
> > > > --- a/drivers/gpu/drm/bridge/sii902x.c
> > > > +++ b/drivers/gpu/drm/bridge/sii902x.c
> > > > @@ -17,6 +17,7 @@
> > > >    #include <linux/i2c.h>
> > > >    #include <linux/module.h>
> > > >    #include <linux/regmap.h>
> > > > +#include <linux/regulator/consumer.h>
> > > >    #include <linux/clk.h>
> > > >    #include <drm/drm_atomic_helper.h>
> > > > @@ -168,6 +169,8 @@ struct sii902x {
> > > >    	struct drm_connector connector;
> > > >    	struct gpio_desc *reset_gpio;
> > > >    	struct i2c_mux_core *i2cmux;
> > > > +	struct regulator *iovcc;
> > > > +	struct regulator *cvcc12;
> > > >    	/*
> > > >    	 * Mutex protects audio and video functions from interfering
> > > >    	 * each other, by keeping their i2c command sequences atomic.
> > > > @@ -954,13 +957,13 @@ static const struct drm_bridge_timings default_sii902x_timings = {
> > > >    		 | DRM_BUS_FLAG_DE_HIGH,
> > > >    };
> > > > +static int sii902x_init(struct sii902x *sii902x);
> > Please re-arrange the code so this prototype is not needed.
> 
> I'd be happy to re-arrange things. It will make the diff look a lot bigger
> than what it is. Is that okay?

The best way would be to split it in two patches.
One that is pure code movement and one that does the actula changes.

	Sam