linux-kernel - Re: [v5] clk: add si5351 i2c common clock driver

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Message-ID: <20130407225046.GA16326@roeck-us.net>
Date:	Sun, 7 Apr 2013 15:50:46 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Warren <swarren@...dia.com>,
	Thierry Reding <thierry.reding@...onic-design.de>,
	Dom Cobley <popcornmix@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Rabeeh Khoury <rabeeh@...id-run.com>,
	Daniel Mack <zonque@...il.com>,
	Jean-Francois Moine <moinejf@...e.fr>,
	Lars-Peter Clausen <lars@...afoo.de>,
	devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [v5] clk: add si5351 i2c common clock driver

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@...il.com>
> Tested-by: Daniel Mack <zonque@...il.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 ?

Thanks,
Guenter
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