1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright (c) 2016 Maxime Ripard. All rights reserved. |
4 | */ |
5 | |
6 | #ifndef _COMMON_H_ |
7 | #define _COMMON_H_ |
8 | |
9 | #include <linux/compiler.h> |
10 | #include <linux/clk-provider.h> |
11 | |
12 | #define CCU_FEATURE_FRACTIONAL BIT(0) |
13 | #define CCU_FEATURE_VARIABLE_PREDIV BIT(1) |
14 | #define CCU_FEATURE_FIXED_PREDIV BIT(2) |
15 | #define CCU_FEATURE_FIXED_POSTDIV BIT(3) |
16 | #define CCU_FEATURE_ALL_PREDIV BIT(4) |
17 | #define CCU_FEATURE_LOCK_REG BIT(5) |
18 | #define CCU_FEATURE_MMC_TIMING_SWITCH BIT(6) |
19 | #define CCU_FEATURE_SIGMA_DELTA_MOD BIT(7) |
20 | #define CCU_FEATURE_KEY_FIELD BIT(8) |
21 | #define CCU_FEATURE_CLOSEST_RATE BIT(9) |
22 | |
23 | /* MMC timing mode switch bit */ |
24 | #define CCU_MMC_NEW_TIMING_MODE BIT(30) |
25 | |
26 | struct device_node; |
27 | |
28 | struct ccu_common { |
29 | void __iomem *base; |
30 | u16 reg; |
31 | u16 lock_reg; |
32 | u32 prediv; |
33 | |
34 | unsigned long features; |
35 | spinlock_t *lock; |
36 | struct clk_hw hw; |
37 | }; |
38 | |
39 | static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw) |
40 | { |
41 | return container_of(hw, struct ccu_common, hw); |
42 | } |
43 | |
44 | struct sunxi_ccu_desc { |
45 | struct ccu_common **ccu_clks; |
46 | unsigned long num_ccu_clks; |
47 | |
48 | struct clk_hw_onecell_data *hw_clks; |
49 | |
50 | struct ccu_reset_map *resets; |
51 | unsigned long num_resets; |
52 | }; |
53 | |
54 | void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock); |
55 | |
56 | bool ccu_is_better_rate(struct ccu_common *common, |
57 | unsigned long target_rate, |
58 | unsigned long current_rate, |
59 | unsigned long best_rate); |
60 | |
61 | struct ccu_pll_nb { |
62 | struct notifier_block clk_nb; |
63 | struct ccu_common *common; |
64 | |
65 | u32 enable; |
66 | u32 lock; |
67 | }; |
68 | |
69 | #define to_ccu_pll_nb(_nb) container_of(_nb, struct ccu_pll_nb, clk_nb) |
70 | |
71 | int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb); |
72 | |
73 | int devm_sunxi_ccu_probe(struct device *dev, void __iomem *reg, |
74 | const struct sunxi_ccu_desc *desc); |
75 | void of_sunxi_ccu_probe(struct device_node *node, void __iomem *reg, |
76 | const struct sunxi_ccu_desc *desc); |
77 | |
78 | #endif /* _COMMON_H_ */ |
79 | |