1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * Copyright 2018-2021 NXP
4 * Dong Aisheng <aisheng.dong@nxp.com>
5 */
6
7 #ifndef __IMX_CLK_SCU_H
8 #define __IMX_CLK_SCU_H
9
10 #include <linux/firmware/imx/sci.h>
11 #include <linux/of.h>
12
13 #define IMX_SCU_GPR_CLK_GATE BIT(0)
14 #define IMX_SCU_GPR_CLK_DIV BIT(1)
15 #define IMX_SCU_GPR_CLK_MUX BIT(2)
16
17 struct imx_clk_scu_rsrc_table {
18 const u32 *rsrc;
19 u8 num;
20 };
21
22 extern struct list_head imx_scu_clks[];
23 extern const struct dev_pm_ops imx_clk_lpcg_scu_pm_ops;
24 extern const struct imx_clk_scu_rsrc_table imx_clk_scu_rsrc_imx8dxl;
25 extern const struct imx_clk_scu_rsrc_table imx_clk_scu_rsrc_imx8qxp;
26 extern const struct imx_clk_scu_rsrc_table imx_clk_scu_rsrc_imx8qm;
27
28 int __init imx_clk_scu_module_init(void);
29 void __exit imx_clk_scu_module_exit(void);
30 int imx_clk_scu_init(struct device_node *np,
31 const struct imx_clk_scu_rsrc_table *data);
32 struct clk_hw *imx_scu_of_clk_src_get(struct of_phandle_args *clkspec,
33 void *data);
34 struct clk_hw *imx_clk_scu_alloc_dev(const char *name,
35 const char * const *parents,
36 int num_parents, u32 rsrc_id, u8 clk_type);
37
38 struct clk_hw *__imx_clk_scu(struct device *dev, const char *name,
39 const char * const *parents, int num_parents,
40 u32 rsrc_id, u8 clk_type);
41
42 void imx_clk_scu_unregister(void);
43
44 struct clk_hw *__imx_clk_lpcg_scu(struct device *dev, const char *name,
45 const char *parent_name, unsigned long flags,
46 void __iomem *reg, u8 bit_idx, bool hw_gate);
47 void imx_clk_lpcg_scu_unregister(struct clk_hw *hw);
48
49 struct clk_hw *__imx_clk_gpr_scu(const char *name, const char * const *parent_name,
50 int num_parents, u32 rsrc_id, u8 gpr_id, u8 flags,
51 bool invert);
52
imx_clk_scu(const char * name,u32 rsrc_id,u8 clk_type)53 static inline struct clk_hw *imx_clk_scu(const char *name, u32 rsrc_id,
54 u8 clk_type)
55 {
56 return imx_clk_scu_alloc_dev(name, NULL, 0, rsrc_id, clk_type);
57 }
58
imx_clk_scu2(const char * name,const char * const * parents,int num_parents,u32 rsrc_id,u8 clk_type)59 static inline struct clk_hw *imx_clk_scu2(const char *name, const char * const *parents,
60 int num_parents, u32 rsrc_id, u8 clk_type)
61 {
62 return imx_clk_scu_alloc_dev(name, parents, num_parents, rsrc_id, clk_type);
63 }
64
imx_clk_lpcg_scu_dev(struct device * dev,const char * name,const char * parent_name,unsigned long flags,void __iomem * reg,u8 bit_idx,bool hw_gate)65 static inline struct clk_hw *imx_clk_lpcg_scu_dev(struct device *dev, const char *name,
66 const char *parent_name, unsigned long flags,
67 void __iomem *reg, u8 bit_idx, bool hw_gate)
68 {
69 return __imx_clk_lpcg_scu(dev, name, parent_name, flags, reg,
70 bit_idx, hw_gate);
71 }
72
imx_clk_lpcg_scu(const char * name,const char * parent_name,unsigned long flags,void __iomem * reg,u8 bit_idx,bool hw_gate)73 static inline struct clk_hw *imx_clk_lpcg_scu(const char *name, const char *parent_name,
74 unsigned long flags, void __iomem *reg,
75 u8 bit_idx, bool hw_gate)
76 {
77 return __imx_clk_lpcg_scu(NULL, name, parent_name, flags, reg,
78 bit_idx, hw_gate);
79 }
80
imx_clk_gate_gpr_scu(const char * name,const char * parent_name,u32 rsrc_id,u8 gpr_id,bool invert)81 static inline struct clk_hw *imx_clk_gate_gpr_scu(const char *name, const char *parent_name,
82 u32 rsrc_id, u8 gpr_id, bool invert)
83 {
84 return __imx_clk_gpr_scu(name, &parent_name, 1, rsrc_id, gpr_id,
85 IMX_SCU_GPR_CLK_GATE, invert);
86 }
87
imx_clk_divider_gpr_scu(const char * name,const char * parent_name,u32 rsrc_id,u8 gpr_id)88 static inline struct clk_hw *imx_clk_divider_gpr_scu(const char *name, const char *parent_name,
89 u32 rsrc_id, u8 gpr_id)
90 {
91 return __imx_clk_gpr_scu(name, &parent_name, 1, rsrc_id, gpr_id,
92 IMX_SCU_GPR_CLK_DIV, 0);
93 }
94
imx_clk_mux_gpr_scu(const char * name,const char * const * parent_names,int num_parents,u32 rsrc_id,u8 gpr_id)95 static inline struct clk_hw *imx_clk_mux_gpr_scu(const char *name, const char * const *parent_names,
96 int num_parents, u32 rsrc_id, u8 gpr_id)
97 {
98 return __imx_clk_gpr_scu(name, parent_names, num_parents, rsrc_id,
99 gpr_id, IMX_SCU_GPR_CLK_MUX, 0);
100 }
101 #endif
102