1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (c) 2016 Maxime Ripard. All rights reserved.
4 */
5
6 #ifndef _CCU_COMMON_H_
7 #define _CCU_COMMON_H_
8
9 #include "ccu.h"
10 #include <hal_clk.h>
11 #include <hal_reset.h>
12
13 #define CCU_FEATURE_FRACTIONAL BIT(0)
14 #define CCU_FEATURE_VARIABLE_PREDIV BIT(1)
15 #define CCU_FEATURE_FIXED_PREDIV BIT(2)
16 #define CCU_FEATURE_FIXED_POSTDIV BIT(3)
17 #define CCU_FEATURE_ALL_PREDIV BIT(4)
18 #define CCU_FEATURE_LOCK_REG BIT(5)
19 #define CCU_FEATURE_MMC_TIMING_SWITCH BIT(6)
20 #define CCU_FEATURE_SIGMA_DELTA_MOD BIT(7)
21
22 /* Support key-field reg setting */
23 #define CCU_FEATURE_KEY_FIELD_MOD BIT(8)
24
25 /* New formula support in MP: clk = parent / M / P */
26 #define CCU_FEATURE_MP_NO_INDEX_MODE BIT(9)
27
28 /* Support fixed rate in gate-clk */
29 #define CCU_FEATURE_FIXED_RATE_GATE BIT(10)
30 /* MMC timing mode switch bit */
31 #define CCU_MMC_NEW_TIMING_MODE BIT(30)
32
33 /**
34 * struct ccu_reg_dump: register dump of clock controller registers.
35 * @offset: clock register offset from the controller base address.
36 * @value: the value to be register at offset.
37 */
38 struct ccu_reg_dump
39 {
40 u32 offset;
41 u32 value;
42 };
43
44 struct ccu_common
45 {
46 unsigned long base;
47 u32 reg;
48 u32 lock_reg;
49 u32 prediv;
50 u32 key_value;
51
52 hal_spinlock_t lock;
53 unsigned long features;
54 struct clk_hw hw;
55 };
56
hw_to_ccu_common(struct clk_hw * hw)57 static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw)
58 {
59 return container_of(hw, struct ccu_common, hw);
60 }
61
62 struct sunxi_ccu_desc
63 {
64 struct ccu_common **ccu_clks;
65 u32 num_ccu_clks;
66
67 struct clk_hw_onecell_data *hw_clks;
68 hal_clk_type_t clk_type;
69
70 struct ccu_reset_map *resets;
71 hal_reset_type_t reset_type;
72 u32 num_resets;
73 };
74
75 void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock);
76 int ccu_common_init(unsigned long reg, const struct sunxi_ccu_desc *desc);
77 void set_reg(unsigned long addr, u32 val, u8 bw, u8 bs);
78 void set_reg_key(unsigned long addr,
79 u32 key, u8 kbw, u8 kbs,
80 u32 val, u8 bw, u8 bs);
81
82 #endif /* _COMMON_H_ */
83