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authorUlf Hansson <ulf.hansson@linaro.org>2013-03-12 23:26:04 +0400
committerMike Turquette <mturquette@linaro.org>2013-03-19 23:58:43 +0400
commit3cc8247f1dce79511de8bf0f69ab02a46cc315b7 (patch)
tree98b33064f74afe802360f3012dc12bf2e49c1781 /include/linux/clk-provider.h
parent1c155b3dfe08351f5fc811062648969f1ba7af53 (diff)
downloadlinux-3cc8247f1dce79511de8bf0f69ab02a46cc315b7.tar.xz
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>
Diffstat (limited to 'include/linux/clk-provider.h')
-rw-r--r--include/linux/clk-provider.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index ee946862e058..56e6cc12c796 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -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);