clk: Introduce optional unprepare_unused callback
An unprepare_unused callback is introduced due to the same reasons to
why the disable_unused callback was added.
During the clk_disable_unused sequence, those clk_hw that needs specific
treatment with regards to being unprepared, shall implement the
unprepare_unused callback.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index c0141f3..253792a 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -352,9 +352,12 @@
if (clk->flags & CLK_IGNORE_UNUSED)
return;
- if (__clk_is_prepared(clk))
- if (clk->ops->unprepare)
+ if (__clk_is_prepared(clk)) {
+ if (clk->ops->unprepare_unused)
+ clk->ops->unprepare_unused(clk->hw);
+ else if (clk->ops->unprepare)
clk->ops->unprepare(clk->hw);
+ }
}
/* caller must hold prepare_lock */
