linux-kernel - Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup

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Message-ID: <20170720135555.u2xuubrt4tpjy6us@flea>
Date:   Thu, 20 Jul 2017 15:55:55 +0200
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Mark Brown <broonie@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Subject: Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup

On Tue, Jul 18, 2017 at 11:41:36AM +0800, Chen-Yu Tsai wrote:
> On Thu, Jul 13, 2017 at 10:13 PM, Maxime Ripard
> <maxime.ripard@...e-electrons.com> wrote:
> > Some channel0 setup has to be done, no matter what the output interface is
> > (RGB, CPU, LVDS). Move that code into a common function in order to avoid
> > duplication.
> >
> > Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> > ---
> >  drivers/gpu/drm/sun4i/sun4i_tcon.c | 26 ++++++++++++++++----------
> >  1 file changed, 16 insertions(+), 10 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> > index a3bbf9994cfa..f051862d635e 100644
> > --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> > +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> > @@ -125,15 +125,26 @@ static int sun4i_tcon_get_clk_delay(struct drm_display_mode *mode,
> >         return delay;
> >  }
> >
> > -static void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
> > -                                struct drm_display_mode *mode)
> > +static void sun4i_tcon0_mode_set_common(struct sun4i_tcon *tcon,
> > +                                       struct drm_display_mode *mode)
> > +{
> > +       /* Configure the dot clock */
> > +       clk_set_rate_protect(tcon->dclk, mode->crtc_clock * 1000);
> 
> I'd prefer not changing APIs in a code move. It also means we could
> apply this sooner than later. Otherwise,

You're right, I've changed it.

> Reviewed-by: Chen-Yu Tsai <wens@...e.org>

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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