[PATCH v6 5/6] clk: scmi: Introduce common header for SCMI clock interface

Peng Fan (OSS)
2025-11-28T03:14:53Z

Added a new header file 'clk-scmi.h' to define common structures and
interfaces for the SCMI clock driver. This header will also be used by
OEM-specific extensions to ensure consistency and reusability.

Moved relevant structure definitions from the driver implementation to
'clk-scmi.h' to facilitate shared usage.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/clk/clk-scmi.c | 27 +--------------------------
drivers/clk/clk-scmi.h | 40 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 41 insertions(+), 26 deletions(-)

diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c
index 6b286ea6f1218c802d0ebb782c75a19057581c20..bf85924d61985eb9e596419349eb883e3817de73 100644
--- a/drivers/clk/clk-scmi.c
+++ b/drivers/clk/clk-scmi.c
@@ -14,32 +14,7 @@
#include <linux/scmi_protocol.h>
#include <asm/div64.h>

-#define NOT_ATOMIC false
-#define ATOMIC true
-
-enum scmi_clk_feats {
- SCMI_CLK_ATOMIC_SUPPORTED,
- SCMI_CLK_STATE_CTRL_SUPPORTED,
- SCMI_CLK_RATE_CTRL_SUPPORTED,
- SCMI_CLK_PARENT_CTRL_SUPPORTED,
- SCMI_CLK_DUTY_CYCLE_SUPPORTED,
- SCMI_CLK_FEATS_COUNT
-};
-
-#define SCMI_MAX_CLK_OPS BIT(SCMI_CLK_FEATS_COUNT)
-
-static const struct scmi_clk_proto_ops *scmi_proto_clk_ops;
-
-struct scmi_clk {
- u32 id;
- struct device *dev;
- struct clk_hw hw;
- const struct scmi_clock_info *info;
- const struct scmi_protocol_handle *ph;
- struct clk_parent_data *parent_data;
-};
-
-#define to_scmi_clk(clk) container_of(clk, struct scmi_clk, hw)
+const struct scmi_clk_proto_ops *scmi_proto_clk_ops;

static unsigned long scmi_clk_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
diff --git a/drivers/clk/clk-scmi.h b/drivers/clk/clk-scmi.h
new file mode 100644
index 0000000000000000000000000000000000000000..6ef6adc77c836dc2d599ff852cdc941f217ee388
--- /dev/null
+++ b/drivers/clk/clk-scmi.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2025 NXP
+ */
+
+#ifndef __SCMI_CLK_H
+#define __SCMI_CLK_H
+
+#include <linux/bits.h>
+#include <linux/scmi_protocol.h>
+#include <linux/types.h>
+
+#define NOT_ATOMIC false
+#define ATOMIC true
+
+enum scmi_clk_feats {
+ SCMI_CLK_ATOMIC_SUPPORTED,
+ SCMI_CLK_STATE_CTRL_SUPPORTED,
+ SCMI_CLK_RATE_CTRL_SUPPORTED,
+ SCMI_CLK_PARENT_CTRL_SUPPORTED,
+ SCMI_CLK_DUTY_CYCLE_SUPPORTED,
+ SCMI_CLK_FEATS_COUNT
+};
+
+#define SCMI_MAX_CLK_OPS BIT(SCMI_CLK_FEATS_COUNT)
+
+struct scmi_clk {
+ u32 id;
+ struct device *dev;
+ struct clk_hw hw;
+ const struct scmi_clock_info *info;
+ const struct scmi_protocol_handle *ph;
+ struct clk_parent_data *parent_data;
+};
+
+#define to_scmi_clk(clk) container_of(clk, struct scmi_clk, hw)
+
+extern const struct scmi_clk_proto_ops *scmi_proto_clk_ops;
+
+#endif

--
2.37.1