linux-kernel - Re: [PATCH v4 7/9] clk: tegra: add clock support for tegra30

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Date:	Fri, 11 Jan 2013 14:40:50 -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 7/9] clk: tegra: add clock support for tegra30

On 01/11/2013 05:17 AM, Hiroshi Doyu wrote:
> On Fri, 11 Jan 2013 08:46:25 +0100
> Prashant Gaikwad <pgaikwad@...dia.com> wrote:
> 
>> Add tegra30 clock support based on common clock framework.
>>
>> Signed-off-by: Prashant Gaikwad <pgaikwad@...dia.com>
> .......
>> +static void __init tegra30_pll_init(void)
>> +{
>> +       struct clk *clk;
>> +
>> +       /* PLLC */
>> +       clk = tegra_clk_pll("pll_c", "pll_ref", clk_base, pmc_base, 0,
>> +                           0, &pll_c_params,
>> +                           TEGRA_PLL_HAS_CPCON | TEGRA_PLL_USE_LOCK,
>> +                           pll_c_freq_table, NULL);
>> +       clk_register_clkdev(clk, "pll_c", NULL);
>> +       clks[pll_c] = clk;
> 
> Just I noticed that there are quite many same itegration of:
> 
> 	clk_register_clkdev(clk, <ID name>, ?);
> 	clks[<ID>] = clk;
> 
> ID == <ID name>
> 
> Can any macro/func do the above at once?

To my mind, a macro would obfuscate this fairly simple code, unless
there is a table somewhere the maps <ID> to <ID name> which would allow
saving some code space (I just looked; I don't think there is).
Eventually (later cleanup), I wouldn't be surprised if both parameters
to clk_register_clkdev() became NULL in most cases, since most lookups
are through DT by the end of this series.
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