diff options
| author |   Heiko Stübner <heiko@sntech.de> | 2014-07-03 01:57:30 +0200 |
|---|---|---|
| committer |   Mike Turquette <mturquette@linaro.org> | 2014-07-13 12:17:04 -0700 |
| commit | 0c02cf2f1c2ffd75221b43bacb4f02a0e52e014b (patch) | |
| tree | f077dfd8233e422d494a70b3ea9f41671faaa747 /drivers/clk/clk-composite.c | |
| parent | clk: composite: support determine_rate using rate_ops->round_rate + mux_ops->set_parent (diff) | |
| download | wireguard-linux-0c02cf2f1c2ffd75221b43bacb4f02a0e52e014b.tar.xz wireguard-linux-0c02cf2f1c2ffd75221b43bacb4f02a0e52e014b.zip | |
clk: composite: allow read-only clocks
This allows readl-only composite clocks by making mux_ops->set_parent and
divider_ops->round_rate/set_rate optional.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-By: Max Schwarz <max.schwarz@online.de>
Tested-By: Max Schwarz <max.schwarz@online.de>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/clk-composite.c')
| -rw-r--r-- | drivers/clk/clk-composite.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/clk/clk-composite.c b/drivers/clk/clk-composite.c index 9548bfcbd56b..faf7c32fe351 100644 --- a/drivers/clk/clk-composite.c +++ b/drivers/clk/clk-composite.c @@ -207,7 +207,7 @@ struct clk *clk_register_composite(struct device *dev, const char *name, clk_composite_ops = &composite->ops; if (mux_hw && mux_ops) { - if (!mux_ops->get_parent || !mux_ops->set_parent) { + if (!mux_ops->get_parent) { clk = ERR_PTR(-EINVAL); goto err; } @@ -215,7 +215,8 @@ struct clk *clk_register_composite(struct device *dev, const char *name, composite->mux_hw = mux_hw; composite->mux_ops = mux_ops; clk_composite_ops->get_parent = clk_composite_get_parent; - clk_composite_ops->set_parent = clk_composite_set_parent; + if (mux_ops->set_parent) + clk_composite_ops->set_parent = clk_composite_set_parent; if (mux_ops->determine_rate) clk_composite_ops->determine_rate = clk_composite_determine_rate; } @@ -232,10 +233,6 @@ struct clk *clk_register_composite(struct device *dev, const char *name, if (rate_ops->set_rate) { clk_composite_ops->set_rate = clk_composite_set_rate; } - } else { - WARN(rate_ops->set_rate, - "%s: missing round_rate op is required\n", - __func__); } composite->rate_hw = rate_hw; |