1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun //
3*4882a593Smuzhiyun // Spreadtrum multiplexer clock driver
4*4882a593Smuzhiyun //
5*4882a593Smuzhiyun // Copyright (C) 2017 Spreadtrum, Inc.
6*4882a593Smuzhiyun // Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #ifndef _SPRD_MUX_H_
9*4882a593Smuzhiyun #define _SPRD_MUX_H_
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include "common.h"
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun /**
14*4882a593Smuzhiyun * struct sprd_mux_ssel - Mux clock's source select bits in its register
15*4882a593Smuzhiyun * @shift: Bit offset of the divider in its register
16*4882a593Smuzhiyun * @width: Width of the divider field in its register
17*4882a593Smuzhiyun * @table: For some mux clocks, not all sources are used on some special
18*4882a593Smuzhiyun * chips, this matches the value of mux clock's register and the
19*4882a593Smuzhiyun * sources which are used for this mux clock
20*4882a593Smuzhiyun */
21*4882a593Smuzhiyun struct sprd_mux_ssel {
22*4882a593Smuzhiyun u8 shift;
23*4882a593Smuzhiyun u8 width;
24*4882a593Smuzhiyun const u8 *table;
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun struct sprd_mux {
28*4882a593Smuzhiyun struct sprd_mux_ssel mux;
29*4882a593Smuzhiyun struct sprd_clk_common common;
30*4882a593Smuzhiyun };
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun #define _SPRD_MUX_CLK(_shift, _width, _table) \
33*4882a593Smuzhiyun { \
34*4882a593Smuzhiyun .shift = _shift, \
35*4882a593Smuzhiyun .width = _width, \
36*4882a593Smuzhiyun .table = _table, \
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun #define SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \
40*4882a593Smuzhiyun _reg, _shift, _width, _flags, _fn) \
41*4882a593Smuzhiyun struct sprd_mux _struct = { \
42*4882a593Smuzhiyun .mux = _SPRD_MUX_CLK(_shift, _width, _table), \
43*4882a593Smuzhiyun .common = { \
44*4882a593Smuzhiyun .regmap = NULL, \
45*4882a593Smuzhiyun .reg = _reg, \
46*4882a593Smuzhiyun .hw.init = _fn(_name, _parents, \
47*4882a593Smuzhiyun &sprd_mux_ops, _flags), \
48*4882a593Smuzhiyun } \
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun #define SPRD_MUX_CLK_TABLE(_struct, _name, _parents, _table, \
52*4882a593Smuzhiyun _reg, _shift, _width, _flags) \
53*4882a593Smuzhiyun SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \
54*4882a593Smuzhiyun _reg, _shift, _width, _flags, \
55*4882a593Smuzhiyun CLK_HW_INIT_PARENTS)
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun #define SPRD_MUX_CLK(_struct, _name, _parents, _reg, \
58*4882a593Smuzhiyun _shift, _width, _flags) \
59*4882a593Smuzhiyun SPRD_MUX_CLK_TABLE(_struct, _name, _parents, NULL, \
60*4882a593Smuzhiyun _reg, _shift, _width, _flags)
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun #define SPRD_MUX_CLK_DATA_TABLE(_struct, _name, _parents, _table, \
63*4882a593Smuzhiyun _reg, _shift, _width, _flags) \
64*4882a593Smuzhiyun SPRD_MUX_CLK_HW_INIT_FN(_struct, _name, _parents, _table, \
65*4882a593Smuzhiyun _reg, _shift, _width, _flags, \
66*4882a593Smuzhiyun CLK_HW_INIT_PARENTS_DATA)
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun #define SPRD_MUX_CLK_DATA(_struct, _name, _parents, _reg, \
69*4882a593Smuzhiyun _shift, _width, _flags) \
70*4882a593Smuzhiyun SPRD_MUX_CLK_DATA_TABLE(_struct, _name, _parents, NULL, \
71*4882a593Smuzhiyun _reg, _shift, _width, _flags)
72*4882a593Smuzhiyun
hw_to_sprd_mux(const struct clk_hw * hw)73*4882a593Smuzhiyun static inline struct sprd_mux *hw_to_sprd_mux(const struct clk_hw *hw)
74*4882a593Smuzhiyun {
75*4882a593Smuzhiyun struct sprd_clk_common *common = hw_to_sprd_clk_common(hw);
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun return container_of(common, struct sprd_mux, common);
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun extern const struct clk_ops sprd_mux_ops;
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun u8 sprd_mux_helper_get_parent(const struct sprd_clk_common *common,
83*4882a593Smuzhiyun const struct sprd_mux_ssel *mux);
84*4882a593Smuzhiyun int sprd_mux_helper_set_parent(const struct sprd_clk_common *common,
85*4882a593Smuzhiyun const struct sprd_mux_ssel *mux,
86*4882a593Smuzhiyun u8 index);
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun #endif /* _SPRD_MUX_H_ */
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