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 lukma@denx.de ---
Changes in v2: None
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 f1640dda67..12ec0baa74 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -455,6 +455,28 @@ int clk_disable_bulk(struct clk_bulk *bulk) return 0; }
+int clk_get_by_id(ulong id, struct clk **c) +{ + struct udevice *dev; + struct uclass *uc; + int ret; + + ret = uclass_get(UCLASS_CLK, &uc); + if (ret) + return ret; + + uclass_foreach_dev(dev, uc) { + struct clk *clk = (struct clk *)dev_get_driver_data(dev); + + if (clk->id == id) { + *c = clk; + return 0; + } + } + + return -ENODEV; +} + UCLASS_DRIVER(clk) = { .id = UCLASS_CLK, .name = "clk", diff --git a/include/clk.h b/include/clk.h index 8224295ec3..045e60357d 100644 --- a/include/clk.h +++ b/include/clk.h @@ -315,4 +315,15 @@ static inline bool clk_valid(struct clk *clk) { return !!clk->dev; } + +/** + * clk_get_by_id() - Get the clock by knowing its ID + * + * @id: The clock ID to search for + * + * @c: A pointer to clock struct that has been found among added clocks + * to UCLASS_CLK + * @return zero on success, or -ve error code. + */ +int clk_get_by_id(ulong id, struct clk **c); #endif