[PATCH 03/18] CLK: Add fractional divider clock support from Linux kernel.

[Sascha Hauer]

On Mon, Mar 02, 2015 at 11:21:47PM +0300, Andrey Panov wrote:
> Arch Kconfig should select CLK_NEED_FDIV to have this support
> compiled in.
> 
> Signed-off-by: Andrey Panov <rockford at yandex.ru>
> ---
>  drivers/clk/Kconfig                  |   3 +
>  drivers/clk/Makefile                 |   1 +
>  drivers/clk/clk-fractional-divider.c | 156 +++++++++++++++++++++++++++++++++++
>  include/linux/clk.h                  |   9 ++
>  4 files changed, 169 insertions(+)
>  create mode 100644 drivers/clk/clk-fractional-divider.c
> 
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index 6db1f33..e82b566 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -11,6 +11,9 @@ config COMMON_CLK
>  config CLK_NEED_COMPOSITE
>  	bool
>  
> +config CLK_NEED_FDIV
> +	bool
> +

No separate option needed.


> +struct clk *clk_fractional_divider_alloc(
> +		const char *name, const char *parent_name, unsigned long flags,
> +		void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,
> +		u8 clk_divider_flags)
> +{
> +	struct clk_fractional_divider *fd;
> +
> +	fd = kzalloc(sizeof(*fd), GFP_KERNEL);
> +	if (!fd) {
> +		pr_err("could not allocate fractional divider clk %s\n", name);
> +		return ERR_PTR(-ENOMEM);
> +	}

xzalloc

Sascha

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