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>
This commit is contained in:
parent
1c155b3dfe
commit
3cc8247f1d
|
@ -352,9 +352,12 @@ static void clk_unprepare_unused_subtree(struct clk *clk)
|
|||
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 */
|
||||
|
|
|
@ -49,6 +49,10 @@ struct clk_hw;
|
|||
* This function is allowed to sleep. Optional, if this op is not
|
||||
* set then the prepare count will be used.
|
||||
*
|
||||
* @unprepare_unused: Unprepare the clock atomically. Only called from
|
||||
* clk_disable_unused for prepare clocks with special needs.
|
||||
* Called with prepare mutex held. This function may sleep.
|
||||
*
|
||||
* @enable: Enable the clock atomically. This must not return until the
|
||||
* clock is generating a valid clock signal, usable by consumer
|
||||
* devices. Called with enable_lock held. This function must not
|
||||
|
@ -113,6 +117,7 @@ struct clk_ops {
|
|||
int (*prepare)(struct clk_hw *hw);
|
||||
void (*unprepare)(struct clk_hw *hw);
|
||||
int (*is_prepared)(struct clk_hw *hw);
|
||||
void (*unprepare_unused)(struct clk_hw *hw);
|
||||
int (*enable)(struct clk_hw *hw);
|
||||
void (*disable)(struct clk_hw *hw);
|
||||
int (*is_enabled)(struct clk_hw *hw);
|
||||
|
|
Loading…
Reference in a new issue