clkdev: add possibility to get a clock based on the device name
This adds clk_get_sys to get a clock without the associated struct
device.
Signed-off-by: Sascha Hauer <[email protected]>
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 7787773..1db9bbf 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -125,4 +125,21 @@
*/
struct clk *clk_get_parent(struct clk *clk);
+/**
+ * clk_get_sys - get a clock based upon the device name
+ * @dev_id: device name
+ * @con_id: connection ID
+ *
+ * Returns a struct clk corresponding to the clock producer, or
+ * valid IS_ERR() condition containing errno. The implementation
+ * uses @dev_id and @con_id to determine the clock consumer, and
+ * thereby the clock producer. In contrast to clk_get() this function
+ * takes the device name instead of the device itself for identification.
+ *
+ * Drivers must assume that the clock source is not enabled.
+ *
+ * clk_get_sys should not be called from within interrupt context.
+ */
+struct clk *clk_get_sys(const char *dev_id, const char *con_id);
+
#endif
