xref: /openbmc/linux/drivers/clk/sunxi/clk-factors.h (revision 9919d44f)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __MACH_SUNXI_CLK_FACTORS_H
3 #define __MACH_SUNXI_CLK_FACTORS_H
4 
5 #include <linux/clk-provider.h>
6 #include <linux/spinlock.h>
7 
8 #define SUNXI_FACTORS_NOT_APPLICABLE	(0)
9 
10 struct clk_factors_config {
11 	u8 nshift;
12 	u8 nwidth;
13 	u8 kshift;
14 	u8 kwidth;
15 	u8 mshift;
16 	u8 mwidth;
17 	u8 pshift;
18 	u8 pwidth;
19 	u8 n_start;
20 };
21 
22 struct factors_request {
23 	unsigned long rate;
24 	unsigned long parent_rate;
25 	u8 parent_index;
26 	u8 n;
27 	u8 k;
28 	u8 m;
29 	u8 p;
30 };
31 
32 struct factors_data {
33 	int enable;
34 	int mux;
35 	int muxmask;
36 	const struct clk_factors_config *table;
37 	void (*getter)(struct factors_request *req);
38 	void (*recalc)(struct factors_request *req);
39 	const char *name;
40 };
41 
42 struct clk_factors {
43 	struct clk_hw hw;
44 	void __iomem *reg;
45 	const struct clk_factors_config *config;
46 	void (*get_factors)(struct factors_request *req);
47 	void (*recalc)(struct factors_request *req);
48 	spinlock_t *lock;
49 	/* for cleanup */
50 	struct clk_mux *mux;
51 	struct clk_gate *gate;
52 };
53 
54 struct clk *sunxi_factors_register(struct device_node *node,
55 				   const struct factors_data *data,
56 				   spinlock_t *lock,
57 				   void __iomem *reg);
58 struct clk *sunxi_factors_register_critical(struct device_node *node,
59 					    const struct factors_data *data,
60 					    spinlock_t *lock,
61 					    void __iomem *reg);
62 
63 void sunxi_factors_unregister(struct device_node *node, struct clk *clk);
64 
65 #endif
66