linux-kernel - Re: [PATCH 02/13] clk: mediatek: Add initial common clock support for Mediatek SoCs.

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Date:	Fri, 13 Feb 2015 13:06:13 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Tomasz Figa <tfiga@...omium.org>
Cc:	Matthias Brugger <matthias.bgg@...il.com>,
	James Liao <jamesjj.liao@...iatek.com>,
	Mike Turquette <mturquette@...aro.org>,
	YH Chen (陳昱豪) <yh.chen@...iatek.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Henry Chen <henryc.chen@...iatek.com>,
	Rob Herring <robh+dt@...nel.org>, kernel@...gutronix.de,
	Yingjoe Chen (陳英洲) 
	<Yingjoe.Chen@...iatek.com>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Lee Jones <lee.jones@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 02/13] clk: mediatek: Add initial common clock support
 for Mediatek SoCs.


Hi Tomasz,

> > +static void mtk_cg_disable(struct clk_hw *hw)
> > +{
> > +       mtk_cg_set_bit(hw);
> > +}
> > +
> > +static int mtk_cg_enable_inv(struct clk_hw *hw)
> > +{
> > +       mtk_cg_set_bit(hw);
> > +
> > +       return 0;
> > +}
> > +
> > +static void mtk_cg_disable_inv(struct clk_hw *hw)
> > +{
> > +       mtk_cg_clr_bit(hw);
> > +}
> 
> Instead of duplicating the ops, couldn't you add a flag or something
> to mtk_clk_gate struct and then act appropriately in the ops? Also,
> see below.

I prefer duplicating the ops. It makes the functions simpler without
ifs.

> > diff --git a/drivers/clk/mediatek/clk-gate.h b/drivers/clk/mediatek/clk-gate.h
> > new file mode 100644
> > index 0000000..a44dcbf
> > --- /dev/null
> > +++ b/drivers/clk/mediatek/clk-gate.h
> > @@ -0,0 +1,49 @@
> > +/*
> > + * Copyright (c) 2014 MediaTek Inc.
> > + * Author: James Liao <jamesjj.liao@...iatek.com>
> 
> Might not be necessary, but maybe the other people (all or some of
> them) from signed-off-by should be added to this and other copyright
> statements?

I rather do not want to update these copyrights frequently. Otherwise we
would see a lot of patches with an extra hunk changing the copyrights.
I'm glad we left that behind and look at the git history instead.
The above is the original author. I don't want to remove him, but I also
do not want to add every other person who touched that file.

The other stuff will be fixed in the next round. Thanks for reviewing.

Sascha

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