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clk: add devm variant of clk_notifier_register

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Add a memory managed variant of clk_notifier_register() to make life easier
on clock consumers using notifiers

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20201021163847.595189-2-jbrunet@baylibre.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Jerome Brunet
2020-10-21 18:38:46 +02:00
committed by Stephen Boyd
parent 8e677e7f0a
commit 6d30d50d03
2 changed files with 46 additions and 0 deletions
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10
include/linux/clk.h
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@@ -109,6 +109,16 @@ int clk_notifier_register(struct clk *clk, struct notifier_block *nb);
*/
int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb);
/**
* devm_clk_notifier_register - register a managed rate-change notifier callback
* @dev: device for clock "consumer"
* @clk: clock whose rate we are interested in
* @nb: notifier block with callback function pointer
*
* Returns 0 on success, -EERROR otherwise
*/
int devm_clk_notifier_register(struct device *dev, struct clk *clk, struct notifier_block *nb);
/**
* clk_get_accuracy - obtain the clock accuracy in ppb (parts per billion)
* for a clock source.