linux-kernel - Re: [RFC,PATCH 2/3] clk: Generic support for fixed-rate clocks

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Date:	Tue, 15 Feb 2011 09:41:00 +0800
From:	Jeremy Kerr <jeremy.kerr@...onical.com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Ryan Mallon <ryan@...ewatersys.com>,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	Dima Zavin <dmitriyz@...gle.com>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	linux-sh@...r.kernel.org,
	Ben Herrenschmidt <benh@...nel.crashing.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	linux-kernel@...r.kernel.org, Paul Mundt <lethal@...ux-sh.org>,
	Saravana Kannan <skannan@...eaurora.org>,
	Ben Dooks <ben-linux@...ff.org>,
	"Uwe Kleine-König" 
	<u.kleine-koenig@...gutronix.de>,
	Russell King <linux@....linux.org.uk>
Subject: Re: [RFC,PATCH 2/3] clk: Generic support for fixed-rate clocks

Hi Ryan,

> A fixed clock may still have other operations such as enable/disable.

Then it's not a fixed clock; I'd prefer this to be a separate type, as it's 
now hardware dependent.

> Maybe do something like this instead:
> #define INIT_CLK_FIXED(name, ops, r) { 		\
> 	.clk = INIT_CLK(name.clk, ops, rate), 	\
> 	.clk.ops.get_rate = clk_fixed_get_rate, \
> 	.rate = (r),				\
> }
> 
> That's untested though. I'm not sure if you can reliably assign
> something twice in a struct initialiser?

also, clk->ops is a const.

Cheers,


Jeremy
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