diff options
author | Shawn Guo <shawn.guo@linaro.org> | 2012-08-22 17:36:27 +0400 |
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committer | Mike Turquette <mturquette@linaro.org> | 2012-09-08 05:30:19 +0400 |
commit | 494bfec99922d54054d2d0873f1017680cfc3f13 (patch) | |
tree | 45697d25099ec0a8790ab77451254d29b2b6ce21 /drivers/clk/clk.c | |
parent | 09b9b2b204751fc23d245d57d420f4973db22a67 (diff) | |
download | linux-494bfec99922d54054d2d0873f1017680cfc3f13.tar.xz |
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 <shawn.guo@linaro.org>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/clk.c')
-rw-r--r-- | drivers/clk/clk.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index d9cbae06549f..56e4495ebeb1 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 |