Add support for clk_is_match() which is required to know if two clock pointers point to the same exact physical clock.
Signed-off-by: Sekhar Nori nsekhar@ti.com --- drivers/clk/clk-uclass.c | 13 +++++++++++++ include/clk.h | 13 +++++++++++++ 2 files changed, 26 insertions(+)
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index 79b3b0494c65..823be2bcb624 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -453,6 +453,19 @@ int clk_disable_bulk(struct clk_bulk *bulk) return 0; }
+bool clk_is_match(const struct clk *p, const struct clk *q) +{ + /* trivial case: identical struct clk's or both NULL */ + if (p == q) + return true; + + /* same device, id and data */ + if (p->dev == q->dev && p->id == q->id && p->data == q->data) + return true; + + return false; +} + UCLASS_DRIVER(clk) = { .id = UCLASS_CLK, .name = "clk", diff --git a/include/clk.h b/include/clk.h index d24e99713a35..e657da038398 100644 --- a/include/clk.h +++ b/include/clk.h @@ -309,6 +309,18 @@ int clk_disable(struct clk *clk); */ int clk_disable_bulk(struct clk_bulk *bulk);
+/** + * clk_is_match - check if two clk's point to the same hardware clock + * @p: clk compared against q + * @q: clk compared against p + * + * Returns true if the two struct clk pointers both point to the same hardware + * clock node. + * + * Returns false otherwise. Note that two NULL clks are treated as matching. + */ +bool clk_is_match(const struct clk *p, const struct clk *q); + int soc_clk_dump(void);
/** @@ -321,4 +333,5 @@ static inline bool clk_valid(struct clk *clk) { return !!clk->dev; } + #endif