v4.19.13 snapshot.
diff --git a/drivers/clk/sprd/mux.h b/drivers/clk/sprd/mux.h
new file mode 100644
index 0000000..548cfa0
--- /dev/null
+++ b/drivers/clk/sprd/mux.h
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Spreadtrum multiplexer clock driver
+//
+// Copyright (C) 2017 Spreadtrum, Inc.
+// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
+
+#ifndef _SPRD_MUX_H_
+#define _SPRD_MUX_H_
+
+#include "common.h"
+
+/**
+ * struct sprd_mux_ssel - Mux clock's source select bits in its register
+ * @shift: Bit offset of the divider in its register
+ * @width: Width of the divider field in its register
+ * @table: For some mux clocks, not all sources are used on some special
+ * chips, this matches the value of mux clock's register and the
+ * sources which are used for this mux clock
+ */
+struct sprd_mux_ssel {
+ u8 shift;
+ u8 width;
+ const u8 *table;
+};
+
+struct sprd_mux {
+ struct sprd_mux_ssel mux;
+ struct sprd_clk_common common;
+};
+
+#define _SPRD_MUX_CLK(_shift, _width, _table) \
+ { \
+ .shift = _shift, \
+ .width = _width, \
+ .table = _table, \
+ }
+
+#define SPRD_MUX_CLK_TABLE(_struct, _name, _parents, _table, \
+ _reg, _shift, _width, \
+ _flags) \
+ struct sprd_mux _struct = { \
+ .mux = _SPRD_MUX_CLK(_shift, _width, _table), \
+ .common = { \
+ .regmap = NULL, \
+ .reg = _reg, \
+ .hw.init = CLK_HW_INIT_PARENTS(_name, \
+ _parents, \
+ &sprd_mux_ops, \
+ _flags), \
+ } \
+ }
+
+#define SPRD_MUX_CLK(_struct, _name, _parents, _reg, \
+ _shift, _width, _flags) \
+ SPRD_MUX_CLK_TABLE(_struct, _name, _parents, NULL, \
+ _reg, _shift, _width, _flags)
+
+static inline struct sprd_mux *hw_to_sprd_mux(const struct clk_hw *hw)
+{
+ struct sprd_clk_common *common = hw_to_sprd_clk_common(hw);
+
+ return container_of(common, struct sprd_mux, common);
+}
+
+extern const struct clk_ops sprd_mux_ops;
+
+u8 sprd_mux_helper_get_parent(const struct sprd_clk_common *common,
+ const struct sprd_mux_ssel *mux);
+int sprd_mux_helper_set_parent(const struct sprd_clk_common *common,
+ const struct sprd_mux_ssel *mux,
+ u8 index);
+
+#endif /* _SPRD_MUX_H_ */