This commit adds the clk_get_by_id() function, which is responsible
for getting the udevice with matching clk->id. Such approach allows
re-usage of inherit DM list relationship for the same class (UCLASS_CLK).
As a result - we don't need any other external list - it is just enough
to look for UCLASS_CLK related udevices.
Signed-off-by: Lukasz Majewski
Reviewed-by: Peng Fan
---
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3:
- Replace -ENODEV with -ENOENT
- Use **clkp instead of **c
- Replace dev->driver_data with dev_get_clk_ptr() wrapper on uclas_priv
drivers/clk/clk-uclass.c | 22 ++
include/clk.h| 11 +++
2 files changed, 33 insertions(+)
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 899b2dda6f..506ba6014c 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -491,6 +491,28 @@ int clk_disable_bulk(struct clk_bulk *bulk)
return 0;
}
+int clk_get_by_id(ulong id, struct clk **clkp)
+{
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ ret = uclass_get(UCLASS_CLK, );
+ if (ret)
+ return ret;
+
+ uclass_foreach_dev(dev, uc) {
+ struct clk *clk = dev_get_clk_ptr(dev);
+
+ if (clk && clk->id == id) {
+ *clkp = clk;
+ return 0;
+ }
+ }
+
+ return -ENOENT;
+}
+
UCLASS_DRIVER(clk) = {
.id = UCLASS_CLK,
.name = "clk",
diff --git a/include/clk.h b/include/clk.h
index 7b2ff8ebe6..f8f56d9cf0 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -345,4 +345,15 @@ static inline bool clk_valid(struct clk *clk)
{
return !!clk->dev;
}
+
+/**
+ * clk_get_by_id() - Get the clock by its ID
+ *
+ * @id:The clock ID to search for
+ *
+ * @clkp: A pointer to clock struct that has been found among added clocks
+ * to UCLASS_CLK
+ * @return zero on success, or -ENOENT on error
+ */
+int clk_get_by_id(ulong id, struct clk **clkp);
#endif
--
2.11.0
___
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
