clk: qcom: branch: Add clk_branch2_prepare_ops

Add the clk_branch2_prepare_ops for supporting clock controller
where the hardware register is accessed by MDIO bus, and the
spin lock can't be used because of sleep during the MDIO
operation.

The clock is enabled by the .prepare instead of .enable when
the clk_branch2_prepare_ops is used.

Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Link: https://lore.kernel.org/r/20240605124541.2711467-2-quic_luoj@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/clk/qcom/clk-branch.c b/drivers/clk/qcom/clk-branch.c
index c1dba33ac31af9b79ea9c660bd16a434e49759c8..229480c5b075a0e70dc05b1cb15b88d29fd475ce 100644 (file)
--- a/drivers/clk/qcom/clk-branch.c
+++ b/drivers/clk/qcom/clk-branch.c
@@ -191,3 +191,10 @@ const struct clk_ops clk_branch_simple_ops = {
        .is_enabled = clk_is_enabled_regmap,
 };
 EXPORT_SYMBOL_GPL(clk_branch_simple_ops);
+
+const struct clk_ops clk_branch2_prepare_ops = {
+       .prepare = clk_branch2_enable,
+       .unprepare = clk_branch2_disable,
+       .is_prepared = clk_is_enabled_regmap,
+};
+EXPORT_SYMBOL_GPL(clk_branch2_prepare_ops);

diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h
index f1b3b635ff3248e8c6174b14e5725bbc31a272fa..292756435f53648640717734af198442a315272e 100644 (file)
--- a/drivers/clk/qcom/clk-branch.h
+++ b/drivers/clk/qcom/clk-branch.h
@@ -109,6 +109,7 @@ extern const struct clk_ops clk_branch2_ops;
 extern const struct clk_ops clk_branch_simple_ops;
 extern const struct clk_ops clk_branch2_aon_ops;
 extern const struct clk_ops clk_branch2_mem_ops;
+extern const struct clk_ops clk_branch2_prepare_ops;
 
 #define to_clk_branch(_hw) \
        container_of(to_clk_regmap(_hw), struct clk_branch, clkr)