[RFC,2/4] clk: Add clk_gate_ro_ops for read-only gate clocks

Commit Message

Abel Vesa Oct. 21, 2020, 5:36 p.m. UTC

The clocks that can be changed from outside of the clock common framework
scope (for example, EL3) need to have only the .is_enabled gate op.

Signed-off-by: Abel Vesa <[e-mail]>
---
 drivers/clk/clk-gate.c       | 5 +++++
 include/linux/clk-provider.h | 1 +
 2 files changed, 6 insertions(+)

Patch

diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 070dc47..41ca887 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -123,6 +123,11 @@  const struct clk_ops clk_gate_ops = {
 };
 EXPORT_SYMBOL_GPL(clk_gate_ops);
 
+const struct clk_ops clk_gate_ro_ops = {
+	.is_enabled = clk_gate_is_enabled,
+};
+EXPORT_SYMBOL_GPL(clk_gate_ro_ops);
+
 struct clk_hw *__clk_hw_register_gate(struct device *dev,
 		struct device_node *np, const char *name,
 		const char *parent_name, const struct clk_hw *parent_hw,
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 94a78b3..6668d2d 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -485,6 +485,7 @@  struct clk_gate {
 #define CLK_GATE_BIG_ENDIAN		BIT(2)
 
 extern const struct clk_ops clk_gate_ops;
+extern const struct clk_ops clk_gate_ro_ops;
 struct clk_hw *__clk_hw_register_gate(struct device *dev,
 		struct device_node *np, const char *name,
 		const char *parent_name, const struct clk_hw *parent_hw,