xref: /openbmc/linux/drivers/clk/imx/clk.h (revision 8b235f2f)
1 #ifndef __MACH_IMX_CLK_H
2 #define __MACH_IMX_CLK_H
3 
4 #include <linux/spinlock.h>
5 #include <linux/clk-provider.h>
6 
7 extern spinlock_t imx_ccm_lock;
8 
9 void imx_check_clocks(struct clk *clks[], unsigned int count);
10 
11 extern void imx_cscmr1_fixup(u32 *val);
12 
13 enum imx_pllv1_type {
14 	IMX_PLLV1_IMX1,
15 	IMX_PLLV1_IMX21,
16 	IMX_PLLV1_IMX25,
17 	IMX_PLLV1_IMX27,
18 	IMX_PLLV1_IMX31,
19 	IMX_PLLV1_IMX35,
20 };
21 
22 struct clk *imx_clk_pllv1(enum imx_pllv1_type type, const char *name,
23 		const char *parent, void __iomem *base);
24 
25 struct clk *imx_clk_pllv2(const char *name, const char *parent,
26 		void __iomem *base);
27 
28 enum imx_pllv3_type {
29 	IMX_PLLV3_GENERIC,
30 	IMX_PLLV3_SYS,
31 	IMX_PLLV3_USB,
32 	IMX_PLLV3_USB_VF610,
33 	IMX_PLLV3_AV,
34 	IMX_PLLV3_ENET,
35 	IMX_PLLV3_ENET_IMX7,
36 };
37 
38 struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
39 		const char *parent_name, void __iomem *base, u32 div_mask);
40 
41 struct clk *clk_register_gate2(struct device *dev, const char *name,
42 		const char *parent_name, unsigned long flags,
43 		void __iomem *reg, u8 bit_idx,
44 		u8 clk_gate_flags, spinlock_t *lock,
45 		unsigned int *share_count);
46 
47 struct clk * imx_obtain_fixed_clock(
48 			const char *name, unsigned long rate);
49 
50 struct clk *imx_clk_gate_exclusive(const char *name, const char *parent,
51 	 void __iomem *reg, u8 shift, u32 exclusive_mask);
52 
53 static inline struct clk *imx_clk_gate2(const char *name, const char *parent,
54 		void __iomem *reg, u8 shift)
55 {
56 	return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
57 			shift, 0, &imx_ccm_lock, NULL);
58 }
59 
60 static inline struct clk *imx_clk_gate2_shared(const char *name,
61 		const char *parent, void __iomem *reg, u8 shift,
62 		unsigned int *share_count)
63 {
64 	return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
65 			shift, 0, &imx_ccm_lock, share_count);
66 }
67 
68 struct clk *imx_clk_pfd(const char *name, const char *parent_name,
69 		void __iomem *reg, u8 idx);
70 
71 struct clk *imx_clk_busy_divider(const char *name, const char *parent_name,
72 				 void __iomem *reg, u8 shift, u8 width,
73 				 void __iomem *busy_reg, u8 busy_shift);
74 
75 struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift,
76 			     u8 width, void __iomem *busy_reg, u8 busy_shift,
77 			     const char **parent_names, int num_parents);
78 
79 struct clk *imx_clk_fixup_divider(const char *name, const char *parent,
80 				  void __iomem *reg, u8 shift, u8 width,
81 				  void (*fixup)(u32 *val));
82 
83 struct clk *imx_clk_fixup_mux(const char *name, void __iomem *reg,
84 			      u8 shift, u8 width, const char **parents,
85 			      int num_parents, void (*fixup)(u32 *val));
86 
87 static inline struct clk *imx_clk_fixed(const char *name, int rate)
88 {
89 	return clk_register_fixed_rate(NULL, name, NULL, CLK_IS_ROOT, rate);
90 }
91 
92 static inline struct clk *imx_clk_divider(const char *name, const char *parent,
93 		void __iomem *reg, u8 shift, u8 width)
94 {
95 	return clk_register_divider(NULL, name, parent, CLK_SET_RATE_PARENT,
96 			reg, shift, width, 0, &imx_ccm_lock);
97 }
98 
99 static inline struct clk *imx_clk_divider_flags(const char *name,
100 		const char *parent, void __iomem *reg, u8 shift, u8 width,
101 		unsigned long flags)
102 {
103 	return clk_register_divider(NULL, name, parent, flags,
104 			reg, shift, width, 0, &imx_ccm_lock);
105 }
106 
107 static inline struct clk *imx_clk_gate(const char *name, const char *parent,
108 		void __iomem *reg, u8 shift)
109 {
110 	return clk_register_gate(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
111 			shift, 0, &imx_ccm_lock);
112 }
113 
114 static inline struct clk *imx_clk_gate_dis(const char *name, const char *parent,
115 		void __iomem *reg, u8 shift)
116 {
117 	return clk_register_gate(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
118 			shift, CLK_GATE_SET_TO_DISABLE, &imx_ccm_lock);
119 }
120 
121 static inline struct clk *imx_clk_mux(const char *name, void __iomem *reg,
122 		u8 shift, u8 width, const char **parents, int num_parents)
123 {
124 	return clk_register_mux(NULL, name, parents, num_parents,
125 			CLK_SET_RATE_NO_REPARENT, reg, shift,
126 			width, 0, &imx_ccm_lock);
127 }
128 
129 static inline struct clk *imx_clk_mux_flags(const char *name,
130 		void __iomem *reg, u8 shift, u8 width, const char **parents,
131 		int num_parents, unsigned long flags)
132 {
133 	return clk_register_mux(NULL, name, parents, num_parents,
134 			flags | CLK_SET_RATE_NO_REPARENT, reg, shift, width, 0,
135 			&imx_ccm_lock);
136 }
137 
138 static inline struct clk *imx_clk_fixed_factor(const char *name,
139 		const char *parent, unsigned int mult, unsigned int div)
140 {
141 	return clk_register_fixed_factor(NULL, name, parent,
142 			CLK_SET_RATE_PARENT, mult, div);
143 }
144 
145 struct clk *imx_clk_cpu(const char *name, const char *parent_name,
146 		struct clk *div, struct clk *mux, struct clk *pll,
147 		struct clk *step);
148 
149 #endif
150