linux-kernel - Re: [RFC PATCH RESEND 1/2] clk: add clk accuracy retrieval support

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Date:	Fri, 15 Nov 2013 17:59:46 -0800
From:	Mike Turquette <mturquette@...aro.org>
To:	Boris BREZILLON <b.brezillon@...rkiz.com>,
	Rob Landley <rob@...dley.net>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Russell King <linux@....linux.org.uk>
Cc:	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Boris BREZILLON <b.brezillon@...rkiz.com>
Subject: Re: [RFC PATCH RESEND 1/2] clk: add clk accuracy retrieval support

Quoting Boris BREZILLON (2013-10-13 10:17:10)
> diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> index 73bdb69..942811d 100644
> --- a/include/linux/clk-provider.h
> +++ b/include/linux/clk-provider.h
...
> @@ -194,6 +204,7 @@ struct clk_hw {
>  struct clk_fixed_rate {
>         struct          clk_hw hw;
>         unsigned long   fixed_rate;
> +       unsigned long   fixed_accuracy;

This change belongs in patch #2. Please also update the kerneldoc above
this struct definition.

Regards,
Mike

>         u8              flags;
>  };
>  
> diff --git a/include/linux/clk.h b/include/linux/clk.h
> index 9a6d045..2fe3b54 100644
> --- a/include/linux/clk.h
> +++ b/include/linux/clk.h
> @@ -85,6 +85,23 @@ int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb);
>  #endif
>  
>  /**
> + * clk_get_accuracy - obtain the clock accuracy in ppb (parts per billion)
> + *                   for a clock source.
> + * @clk: clock source
> + *
> + * This gets the clock source accuracy expressed in ppb.
> + * A perfect clock returns 0.
> + */
> +#ifdef CONFIG_HAVE_CLK_GET_ACCURACY
> +unsigned long clk_get_accuracy(struct clk *clk);
> +#else
> +static inline unsigned long clk_get_accuracy(struct clk *clk)
> +{
> +       return 0;
> +}
> +#endif
> +
> +/**
>   * clk_prepare - prepare a clock source
>   * @clk: clock source
>   *
> -- 
> 1.7.9.5
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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