Add support for clk_is_match() which is required to know if two clock pointers point to the same exact physical clock.
Also add a unit test for the new API. Reviewed-by: Lokesh Vutla <[email protected]> Signed-off-by: Sekhar Nori <[email protected]> --- drivers/clk/clk-uclass.c | 13 +++++++++++++ include/clk.h | 12 ++++++++++++ test/dm/clk.c | 1 + 3 files changed, 26 insertions(+) diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index 85dfe712f5ac..1409c03ea174 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -515,6 +515,19 @@ int clk_get_by_id(ulong id, struct clk **clkp) return -ENOENT; } +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 f8f56d9cf01d..f50e5caa2206 100644 --- a/include/clk.h +++ b/include/clk.h @@ -333,6 +333,18 @@ 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); /** diff --git a/test/dm/clk.c b/test/dm/clk.c index f301ecbb459d..676ef217f093 100644 --- a/test/dm/clk.c +++ b/test/dm/clk.c @@ -24,6 +24,7 @@ static int dm_test_clk_base(struct unit_test_state *uts) /* Get the same clk port in 2 different ways and compare */ ut_assertok(clk_get_by_index(dev, 1, &clk_method1)); ut_assertok(clk_get_by_index_nodev(dev_ofnode(dev), 1, &clk_method2)); + ut_asserteq(clk_is_match(&clk_method1, &clk_method2), true); ut_asserteq(clk_method1.id, clk_method2.id); return 0; -- 2.16.2 _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
