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
17struct imx_clk_scu_rsrc_table {
18 const u32 *rsrc;
19 u8 num;
20};
21
22extern struct list_head imx_scu_clks[];
23extern const struct dev_pm_ops imx_clk_lpcg_scu_pm_ops;
24extern const struct imx_clk_scu_rsrc_table imx_clk_scu_rsrc_imx8dxl;
25extern const struct imx_clk_scu_rsrc_table imx_clk_scu_rsrc_imx8qxp;
26extern const struct imx_clk_scu_rsrc_table imx_clk_scu_rsrc_imx8qm;
27
28int imx_clk_scu_init(struct device_node *np,
29 const struct imx_clk_scu_rsrc_table *data);
30struct clk_hw *imx_scu_of_clk_src_get(struct of_phandle_args *clkspec,
31 void *data);
32struct clk_hw *imx_clk_scu_alloc_dev(const char *name,
33 const char * const *parents,
34 int num_parents, u32 rsrc_id, u8 clk_type);
35
36struct clk_hw *__imx_clk_scu(struct device *dev, const char *name,
37 const char * const *parents, int num_parents,
38 u32 rsrc_id, u8 clk_type);
39
40void imx_clk_scu_unregister(void);
41
42struct clk_hw *__imx_clk_lpcg_scu(struct device *dev, const char *name,
43 const char *parent_name, unsigned long flags,
44 void __iomem *reg, u8 bit_idx, bool hw_gate);
45void imx_clk_lpcg_scu_unregister(struct clk_hw *hw);
46
47struct clk_hw *__imx_clk_gpr_scu(const char *name, const char * const *parent_name,
48 int num_parents, u32 rsrc_id, u8 gpr_id, u8 flags,
49 bool invert);
50
51static inline struct clk_hw *imx_clk_scu(const char *name, u32 rsrc_id,
52 u8 clk_type)
53{
54 return imx_clk_scu_alloc_dev(name, NULL, num_parents: 0, rsrc_id, clk_type);
55}
56
57static inline struct clk_hw *imx_clk_scu2(const char *name, const char * const *parents,
58 int num_parents, u32 rsrc_id, u8 clk_type)
59{
60 return imx_clk_scu_alloc_dev(name, parents, num_parents, rsrc_id, clk_type);
61}
62
63static inline struct clk_hw *imx_clk_lpcg_scu_dev(struct device *dev, const char *name,
64 const char *parent_name, unsigned long flags,
65 void __iomem *reg, u8 bit_idx, bool hw_gate)
66{
67 return __imx_clk_lpcg_scu(dev, name, parent_name, flags, reg,
68 bit_idx, hw_gate);
69}
70
71static inline struct clk_hw *imx_clk_lpcg_scu(const char *name, const char *parent_name,
72 unsigned long flags, void __iomem *reg,
73 u8 bit_idx, bool hw_gate)
74{
75 return __imx_clk_lpcg_scu(NULL, name, parent_name, flags, reg,
76 bit_idx, hw_gate);
77}
78
79static inline struct clk_hw *imx_clk_gate_gpr_scu(const char *name, const char *parent_name,
80 u32 rsrc_id, u8 gpr_id, bool invert)
81{
82 return __imx_clk_gpr_scu(name, parent_name: &parent_name, num_parents: 1, rsrc_id, gpr_id,
83 IMX_SCU_GPR_CLK_GATE, invert);
84}
85
86static inline struct clk_hw *imx_clk_divider_gpr_scu(const char *name, const char *parent_name,
87 u32 rsrc_id, u8 gpr_id)
88{
89 return __imx_clk_gpr_scu(name, parent_name: &parent_name, num_parents: 1, rsrc_id, gpr_id,
90 IMX_SCU_GPR_CLK_DIV, invert: 0);
91}
92
93static inline struct clk_hw *imx_clk_mux_gpr_scu(const char *name, const char * const *parent_names,
94 int num_parents, u32 rsrc_id, u8 gpr_id)
95{
96 return __imx_clk_gpr_scu(name, parent_name: parent_names, num_parents, rsrc_id,
97 gpr_id, IMX_SCU_GPR_CLK_MUX, invert: 0);
98}
99#endif
100

source code of linux/drivers/clk/imx/clk-scu.h