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7a29a869 CC |
1 | /* |
2 | * Copyright (c) 2015 Endless Mobile, Inc. | |
3 | * Author: Carlo Caione <carlo@endlessm.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | ||
18 | #ifndef __CLKC_H | |
19 | #define __CLKC_H | |
20 | ||
21 | #define PMASK(width) GENMASK(width - 1, 0) | |
22 | #define SETPMASK(width, shift) GENMASK(shift + width - 1, shift) | |
23 | #define CLRPMASK(width, shift) (~SETPMASK(width, shift)) | |
24 | ||
25 | #define PARM_GET(width, shift, reg) \ | |
26 | (((reg) & SETPMASK(width, shift)) >> (shift)) | |
27 | #define PARM_SET(width, shift, reg, val) \ | |
28 | (((reg) & CLRPMASK(width, shift)) | (val << (shift))) | |
29 | ||
30 | #define MESON_PARM_APPLICABLE(p) (!!((p)->width)) | |
31 | ||
32 | struct parm { | |
33 | u16 reg_off; | |
34 | u8 shift; | |
35 | u8 width; | |
36 | }; | |
ec623f2a | 37 | |
7a29a869 CC |
38 | struct pll_rate_table { |
39 | unsigned long rate; | |
40 | u16 m; | |
41 | u16 n; | |
42 | u16 od; | |
4a472951 MT |
43 | u16 od2; |
44 | u16 frac; | |
7a29a869 | 45 | }; |
4a472951 | 46 | |
7a29a869 CC |
47 | #define PLL_RATE(_r, _m, _n, _od) \ |
48 | { \ | |
49 | .rate = (_r), \ | |
50 | .m = (_m), \ | |
51 | .n = (_n), \ | |
52 | .od = (_od), \ | |
53 | } \ | |
54 | ||
4a472951 MT |
55 | #define PLL_FRAC_RATE(_r, _m, _n, _od, _od2, _frac) \ |
56 | { \ | |
57 | .rate = (_r), \ | |
58 | .m = (_m), \ | |
59 | .n = (_n), \ | |
60 | .od = (_od), \ | |
61 | .od2 = (_od2), \ | |
62 | .frac = (_frac), \ | |
63 | } \ | |
64 | ||
ec623f2a MT |
65 | struct meson_clk_pll { |
66 | struct clk_hw hw; | |
67 | void __iomem *base; | |
68 | struct parm m; | |
69 | struct parm n; | |
4a472951 | 70 | struct parm frac; |
ec623f2a | 71 | struct parm od; |
4a472951 | 72 | struct parm od2; |
ec623f2a MT |
73 | const struct pll_rate_table *rate_table; |
74 | unsigned int rate_count; | |
75 | spinlock_t *lock; | |
7a29a869 CC |
76 | }; |
77 | ||
ec623f2a MT |
78 | #define to_meson_clk_pll(_hw) container_of(_hw, struct meson_clk_pll, hw) |
79 | ||
55d42c40 MT |
80 | struct meson_clk_cpu { |
81 | struct clk_hw hw; | |
82 | void __iomem *base; | |
83 | u16 reg_off; | |
84 | struct notifier_block clk_nb; | |
85 | const struct clk_div_table *div_table; | |
86 | }; | |
87 | ||
55d42c40 MT |
88 | int meson_clk_cpu_notifier_cb(struct notifier_block *nb, unsigned long event, |
89 | void *data); | |
ec623f2a | 90 | |
1c50da4f MT |
91 | struct meson_clk_mpll { |
92 | struct clk_hw hw; | |
93 | void __iomem *base; | |
94 | struct parm sdm; | |
95 | struct parm n2; | |
96 | /* FIXME ssen gate control? */ | |
97 | spinlock_t *lock; | |
98 | }; | |
99 | ||
73de5c8b MT |
100 | #define MESON_GATE(_name, _reg, _bit) \ |
101 | struct clk_gate gxbb_##_name = { \ | |
102 | .reg = (void __iomem *) _reg, \ | |
103 | .bit_idx = (_bit), \ | |
104 | .lock = &clk_lock, \ | |
105 | .hw.init = &(struct clk_init_data) { \ | |
106 | .name = #_name, \ | |
107 | .ops = &clk_gate_ops, \ | |
108 | .parent_names = (const char *[]){ "clk81" }, \ | |
109 | .num_parents = 1, \ | |
110 | .flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED), \ | |
111 | }, \ | |
112 | }; | |
113 | ||
ec623f2a MT |
114 | /* clk_ops */ |
115 | extern const struct clk_ops meson_clk_pll_ro_ops; | |
116 | extern const struct clk_ops meson_clk_pll_ops; | |
55d42c40 | 117 | extern const struct clk_ops meson_clk_cpu_ops; |
1c50da4f | 118 | extern const struct clk_ops meson_clk_mpll_ro_ops; |
7a29a869 CC |
119 | |
120 | #endif /* __CLKC_H */ |