Message-ID: <51620604.4070204@gmail.com>
Date: Mon, 08 Apr 2013 01:49:24 +0200
From: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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To: Guenter Roeck <linux@roeck-us.net>
CC: Grant Likely <grant.likely@secretlab.ca>,
        Rob Herring <rob.herring@calxeda.com>, Rob Landley <rob@landley.net>,
        Mike Turquette <mturquette@linaro.org>,
        Stephen Warren <swarren@nvidia.com>,
        Thierry Reding <thierry.reding@avionic-design.de>,
        Dom Cobley <popcornmix@gmail.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Andrew Morton <akpm@linux-foundation.org>,
        Pawel Moll <pawel.moll@arm.com>,
        Mark Brown <broonie@opensource.wolfsonmicro.com>,
        Russell King - ARM Linux <linux@arm.linux.org.uk>,
        Rabeeh Khoury <rabeeh@solid-run.com>, Daniel Mack <zonque@gmail.com>,
        Jean-Francois Moine <moinejf@free.fr>,
        Lars-Peter Clausen <lars@metafoo.de>,
        devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [v5] clk: add si5351 i2c common clock driver
References: <1365139415-17815-1-git-send-email-sebastian.hesselbarth@gmail.com> <20130407225046.GA16326@roeck-us.net>
In-Reply-To: <20130407225046.GA16326@roeck-us.net>
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On 04/08/2013 12:50 AM, Guenter Roeck wrote:
> On Fri, Apr 05, 2013 at 05:23:35AM -0000, Sebastian Hesselbarth wrote:
>> This patch adds a common clock driver for Silicon Labs Si5351a/b/c
>> i2c programmable clock generators. Currently, the driver supports
>> DT kernels only and VXCO feature of si5351b is not implemented. DT
>> bindings selectively allow to overwrite stored Si5351 configuration
>> which is very helpful for clock generators with empty eeprom
>> configuration. Corresponding device tree binding documentation is
>> also added.
>>
>> Signed-off-by: Sebastian Hesselbarth<sebastian.hesselbarth@gmail.com>
>> Tested-by: Daniel Mack<zonque@gmail.com>
>>
> [ ... ]
>
>> +static inline void _si5351_msynth_set_pll_master(
>> +	struct si5351_driver_data *drvdata, unsigned char num, int is_master)
>> +{
>> +	unsigned long flags;
>> +
>> +	if (num>  8 ||
>> +	    (drvdata->variant == SI5351_VARIANT_A3&&  num>  3))
>> +		return;
>> +
>> +	flags = __clk_get_flags(drvdata->msynth[num].hw.clk);
>> +	if (is_master)
>> +		flags |= CLK_SET_RATE_PARENT;
>> +	else
>> +		flags&= ~CLK_SET_RATE_PARENT;
>> +	__clk_set_flags(drvdata->msynth[num].hw.clk, flags);
>> +}
>> +
> Unless I am missing something, neither __clk_get_flags() nor the new
> __clk_set_flags is exported.
>
> Did you try to build and load the driver as module ?

Well, good catch. I didn't try to build v5 as a module, but I guess it
will fail. But I consider this as something that has to be addressed in
clk framework itself, not in this patch. There will be other
clk-providers built as module in the future for sure.

Sebastian
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