These functions are used by some media drivers since 4f528afc.
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
backport/backport-include/linux/clk.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/backport/backport-include/linux/clk.h b/backport/backport-include/linux/clk.h
index a619b66..c5c4570 100644
--- a/backport/backport-include/linux/clk.h
+++ b/backport/backport-include/linux/clk.h
@@ -86,4 +86,31 @@ static inline struct clk *clk_get_parent(struct clk *clk)
#endif /* #if LINUX_VERSION_CODE < KERNEL_VERSION(3,0,0) */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0) && \
+ LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)
+#define clk_prepare_enable LINUX_BACKPORT(clk_prepare_enable)
+/* clk_prepare_enable helps cases using clk_enable in non-atomic context. */
+static inline int clk_prepare_enable(struct clk *clk)
+{
+ int ret;
+
+ ret = clk_prepare(clk);
+ if (ret)
+ return ret;
+ ret = clk_enable(clk);
+ if (ret)
+ clk_unprepare(clk);
+
+ return ret;
+}
+
+#define clk_disable_unprepare LINUX_BACKPORT(clk_disable_unprepare)
+/* clk_disable_unprepare helps cases using clk_disable in non-atomic context. */
+static inline void clk_disable_unprepare(struct clk *clk)
+{
+ clk_disable(clk);
+ clk_unprepare(clk);
+}
+#endif /* < 3,3,0 && >= 3,2,0 */
+
#endif /* __LINUX_CLK_H */
--
1.9.1
--
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