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
21/* MMC timing mode switch bit */
22#define CCU_MMC_NEW_TIMING_MODE		BIT(30)
23
24struct device_node;
25
26struct ccu_common {
27	void __iomem	*base;
28	u16		reg;
29	u16		lock_reg;
30	u32		prediv;
31
32	unsigned long	features;
33	spinlock_t	*lock;
34	struct clk_hw	hw;
35};
36
37static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw)
38{
39	return container_of(hw, struct ccu_common, hw);
40}
41
42struct sunxi_ccu_desc {
43	struct ccu_common		**ccu_clks;
44	unsigned long			num_ccu_clks;
45
46	struct clk_hw_onecell_data	*hw_clks;
47
48	struct ccu_reset_map		*resets;
49	unsigned long			num_resets;
50};
51
52void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock);
53
54struct ccu_pll_nb {
55	struct notifier_block	clk_nb;
56	struct ccu_common	*common;
57
58	u32	enable;
59	u32	lock;
60};
61
62#define to_ccu_pll_nb(_nb) container_of(_nb, struct ccu_pll_nb, clk_nb)
63
64int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb);
65
66int sunxi_ccu_probe(struct device_node *node, void __iomem *reg,
67		    const struct sunxi_ccu_desc *desc);
68
69#endif /* _COMMON_H_ */
70