linux-kernel - Re: [PATCH v4 2/9] clk: tegra: Add tegra specific clocks

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Date:	Wed, 16 Jan 2013 11:44:35 -0700
From:	Stephen Warren <swarren@...dotorg.org>
To:	Hiroshi Doyu <hdoyu@...dia.com>
CC:	Prashant Gaikwad <pgaikwad@...dia.com>,
	"mturquette@...aro.org" <mturquette@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 2/9] clk: tegra: Add tegra specific clocks

On 01/16/2013 05:31 AM, Hiroshi Doyu wrote:
> Prashant Gaikwad <pgaikwad@...dia.com> wrote @ Fri, 11 Jan 2013 08:46:20 +0100:
> ...
>> +struct clk *tegra_clk_periph(const char *name, const char **parent_names,
>> +                            int num_parents, struct tegra_clk_periph *periph,
>> +                            void __iomem *clk_base, u32 offset)
...
>> +struct clk *tegra_clk_periph_nodiv(const char *name, const char **parent_names,
>> +                             int num_parents, struct tegra_clk_periph *periph,
>> +                             void __iomem *clk_base, u32 offset)
...
>
> The above two functions are almost duplicate, can we take the common part from them?

Sure, that looks reasonable.

> struct clk *__tegra_clk_periph(const char *name, const char **parent_names,
> 			    int num_parents, struct tegra_clk_periph *periph,
> 			    void __iomem *clk_base, u32 offset, int div)

>        periph->divider.reg = clk_base + offset;

That will also need to be conditional.

>        periph->divider.hw.clk = div ? NULL : clk;

And that test is inverted.

> static inline struct clk *tegra_clk_periph(const char *name, const char **parent_names,
> 			    int num_parents, struct tegra_clk_periph *periph,
> 			    void __iomem *clk_base, u32 offset)

I'd rather just make these regular functions in the .c file; otherwise
they have to go into the header file, which means prototyping
__tegra_clk_periph() there and it just gets messy.
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