Quoting Sylwester Nawrocki (2014-02-19 08:58:42)
> The of_clk_get_list_entry() function is like of_clk_get() except it allows
> to pass name of a DT property containing list of phandles and clock specifiers.
> For of_clk_get() it has been hard coded to "clocks".
>
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
> Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
> ---
> drivers/clk/clk.h | 3 +++
> drivers/clk/clkdev.c | 25 +++++++++++++++++++++----
> 2 files changed, 24 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/clk/clk.h b/drivers/clk/clk.h
> index 795cc9f..dd9def1 100644
> --- a/drivers/clk/clk.h
> +++ b/drivers/clk/clk.h
> @@ -10,7 +10,10 @@
> */
>
> #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> +
> struct clk *__of_clk_get_from_provider(struct of_phandle_args *clkspec);
> void of_clk_lock(void);
> void of_clk_unlock(void);
> +struct clk *of_clk_get_list_entry(struct device_node *np,
> + const char *list_name, int index);
> #endif
> diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
> index a360b2e..465662e 100644
> --- a/drivers/clk/clkdev.c
> +++ b/drivers/clk/clkdev.c
> @@ -27,17 +27,28 @@ static LIST_HEAD(clocks);
> static DEFINE_MUTEX(clocks_mutex);
>
> #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> -struct clk *of_clk_get(struct device_node *np, int index)
> +/**
> + * of_clk_get_list_entry() - Parse and lookup a clock referenced by a device node
> + * @np: pointer to clock consumer node
> + * @list_name: name of the clock list property
> + * @index: index to the clock list
> + *
> + * This function parses the @list_name property and together with @index
> + * value indicating an entry of the list uses it to look up the struct clk
> + * from the registered list of clock providers.
> + */
> +struct clk *of_clk_get_list_entry(struct device_node *np,
> + const char *list_name, int index)
Bikeshed alert: how about of_clk_get_by_property or of_clk_get_by_prop?
No strong opinion on the topic though.
Regards,
Mike
> {
> struct of_phandle_args clkspec;
> struct clk *clk;
> int rc;
>
> - if (index < 0)
> + if (index < 0 || !list_name)
> return ERR_PTR(-EINVAL);
>
> - rc = of_parse_phandle_with_args(np, "clocks", "#clock-cells", index,
> - &clkspec);
> + rc = of_parse_phandle_with_args(np, list_name, "#clock-cells",
> + index, &clkspec);
> if (rc)
> return ERR_PTR(rc);
>
> @@ -51,6 +62,12 @@ struct clk *of_clk_get(struct device_node *np, int index)
> of_node_put(clkspec.np);
> return clk;
> }
> +EXPORT_SYMBOL(of_clk_get_list_entry);
> +
> +struct clk *of_clk_get(struct device_node *np, int index)
> +{
> + return of_clk_get_list_entry(np, "clocks", index);
> +}
> EXPORT_SYMBOL(of_clk_get);
>
> /**
> --
> 1.7.9.5
>
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
