From 494bfec99922d54054d2d0873f1017680cfc3f13 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 22 Aug 2012 21:36:27 +0800 Subject: clk: add of_clk_src_onecell_get() support For those SoCs that have hundreds of clock outputs, their clock DT bindings could reasonably define #clock-cells as 1 and require the client device specify the index of the clock it consumes in the cell of its "clocks" phandle. Add a generic of_clk_src_onecell_get() function for this purpose. Signed-off-by: Shawn Guo Reviewed-by: Rob Herring Signed-off-by: Mike Turquette --- drivers/clk/clk.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/clk/clk.c') diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index d9cbae0..56e4495e 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -1587,6 +1587,20 @@ struct clk *of_clk_src_simple_get(struct of_phandle_args *clkspec, } EXPORT_SYMBOL_GPL(of_clk_src_simple_get); +struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data) +{ + struct clk_onecell_data *clk_data = data; + unsigned int idx = clkspec->args[0]; + + if (idx >= clk_data->clk_num) { + pr_err("%s: invalid clock index %d\n", __func__, idx); + return ERR_PTR(-EINVAL); + } + + return clk_data->clks[idx]; +} +EXPORT_SYMBOL_GPL(of_clk_src_onecell_get); + /** * of_clk_add_provider() - Register a clock provider for a node * @np: Device node pointer associated with clock provider -- cgit v1.1