[PATCH v6 2/3] clk: introduce the common clock framework

Turquette, Mike mturquette at ti.com
Tue Mar 13 22:41:21 UTC 2012

On Tue, Mar 13, 2012 at 2:48 PM, Rob Herring <robherring2 at gmail.com> wrote:
> Mike,
> On 03/10/2012 01:54 AM, Mike Turquette wrote:
>> The common clock framework defines a common struct clk useful across
>> most platforms as well as an implementation of the clk api that drivers
>> can use safely for managing clocks.
>> The net result is consolidation of many different struct clk definitions
>> and platform-specific clock framework implementations.
>> This patch introduces the common struct clk, struct clk_ops and an
>> implementation of the well-known clock api in include/clk/clk.h.
>> Platforms may define their own hardware-specific clock structure and
>> their own clock operation callbacks, so long as it wraps an instance of
>> struct clk_hw.
>> See Documentation/clk.txt for more details.
>> This patch is based on the work of Jeremy Kerr, which in turn was based
>> on the work of Ben Herrenschmidt.
>> Signed-off-by: Mike Turquette <mturquette at linaro.org>
>> Signed-off-by: Mike Turquette <mturquette at ti.com>
>> Cc: Russell King <linux at arm.linux.org.uk>
>> Cc: Jeremy Kerr <jeremy.kerr at canonical.com>
>> Cc: Thomas Gleixner <tglx at linutronix.de>
>> Cc: Arnd Bergman <arnd.bergmann at linaro.org>
>> Cc: Paul Walmsley <paul at pwsan.com>
>> Cc: Shawn Guo <shawn.guo at freescale.com>
>> Cc: Sascha Hauer <s.hauer at pengutronix.de>
>> Cc: Richard Zhao <richard.zhao at linaro.org>
>> Cc: Saravana Kannan <skannan at codeaurora.org>
>> Cc: Magnus Damm <magnus.damm at gmail.com>
>> Cc: Rob Herring <rob.herring at calxeda.com>
>> Cc: Mark Brown <broonie at opensource.wolfsonmicro.com>
>> Cc: Linus Walleij <linus.walleij at stericsson.com>
>> Cc: Stephen Boyd <sboyd at codeaurora.org>
>> Cc: Amit Kucheria <amit.kucheria at linaro.org>
>> Cc: Deepak Saxena <dsaxena at linaro.org>
>> Cc: Grant Likely <grant.likely at secretlab.ca>
>> Cc: Andrew Lunn <andrew at lunn.ch>
> snip
>> +
>> +     /*
>> +      * walk the list of orphan clocks and reparent any that are children of
>> +      * this clock
>> +      */
>> +     hlist_for_each_entry(orphan, tmp, &clk_orphan_list, child_node)
> In __clk_init, this needs to be hlist_for_each_entry_safe as entries can
> be removed.

Thanks for the catch Rob.  I'll take this in.


> Rob
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