diff options
| author |   Ben Dooks <ben.dooks@codethink.co.uk> | 2014-02-13 18:02:49 +0000 |
|---|---|---|
| committer |   Mike Turquette <mturquette@linaro.org> | 2014-02-23 12:40:20 -0800 |
| commit | 7a0fc1a3df82d29e00b4c9f88a6b37450d6711f1 (patch) | |
| tree | 2489148971978cbf398fea553c8ef5773e9aa121 /drivers/clk | |
| parent | Merge tag 'socfpga-clk-for-3.15' of git://git.rocketboards.org/linux-socfpga-next into clk-next (diff) | |
| download | linux-dev-7a0fc1a3df82d29e00b4c9f88a6b37450d6711f1.tar.xz linux-dev-7a0fc1a3df82d29e00b4c9f88a6b37450d6711f1.zip | |
clk: add clock-indices support
Add a property called clock-indices to allow clock-output-names
to be used where the index used to lookup a clock is not a 1:1
mapping to the array position in the clock-output-names
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/clk.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index ea2ca9ff2677..a6f079d23eaa 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -2496,8 +2496,12 @@ EXPORT_SYMBOL_GPL(of_clk_get_parent_count); const char *of_clk_get_parent_name(struct device_node *np, int index) { struct of_phandle_args clkspec; + struct property *prop; const char *clk_name; + const __be32 *vp; + u32 pv; int rc; + int count; if (index < 0) return NULL; @@ -2507,8 +2511,22 @@ const char *of_clk_get_parent_name(struct device_node *np, int index) if (rc) return NULL; + index = clkspec.args_count ? clkspec.args[0] : 0; + count = 0; + + /* if there is an indices property, use it to transfer the index + * specified into an array offset for the clock-output-names property. + */ + of_property_for_each_u32(clkspec.np, "clock-indices", prop, vp, pv) { + if (index == pv) { + index = count; + break; + } + count++; + } + if (of_property_read_string_index(clkspec.np, "clock-output-names", - clkspec.args_count ? clkspec.args[0] : 0, + index, &clk_name) < 0) clk_name = clkspec.np->name; |