1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Clock driver for TI Davinci PSC controllers
4 *
5 * Copyright (C) 2018 David Lechner <david@lechnology.com>
6 */
7
8#ifndef __CLK_DAVINCI_PSC_H__
9#define __CLK_DAVINCI_PSC_H__
10
11#include <linux/clk-provider.h>
12#include <linux/types.h>
13
14/* PSC quirk flags */
15#define LPSC_ALWAYS_ENABLED BIT(0) /* never disable this clock */
16#define LPSC_SET_RATE_PARENT BIT(1) /* propagate set_rate to parent clock */
17#define LPSC_FORCE BIT(2) /* requires MDCTL FORCE bit */
18#define LPSC_LOCAL_RESET BIT(3) /* acts as reset provider */
19
20struct davinci_lpsc_clkdev_info {
21 const char *con_id;
22 const char *dev_id;
23};
24
25#define LPSC_CLKDEV(c, d) { \
26 .con_id = (c), \
27 .dev_id = (d) \
28}
29
30#define LPSC_CLKDEV1(n, c, d) \
31static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
32 LPSC_CLKDEV((c), (d)), \
33 { } \
34}
35
36#define LPSC_CLKDEV2(n, c1, d1, c2, d2) \
37static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
38 LPSC_CLKDEV((c1), (d1)), \
39 LPSC_CLKDEV((c2), (d2)), \
40 { } \
41}
42
43#define LPSC_CLKDEV3(n, c1, d1, c2, d2, c3, d3) \
44static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
45 LPSC_CLKDEV((c1), (d1)), \
46 LPSC_CLKDEV((c2), (d2)), \
47 LPSC_CLKDEV((c3), (d3)), \
48 { } \
49}
50
51/**
52 * davinci_lpsc_clk_info - LPSC module-specific clock information
53 * @name: the clock name
54 * @parent: the parent clock name
55 * @cdevs: optional array of clkdev lookup table info
56 * @md: the local module domain (LPSC id)
57 * @pd: the power domain id
58 * @flags: bitmask of LPSC_* flags
59 */
60struct davinci_lpsc_clk_info {
61 const char *name;
62 const char *parent;
63 const struct davinci_lpsc_clkdev_info *cdevs;
64 u32 md;
65 u32 pd;
66 unsigned long flags;
67};
68
69#define LPSC(m, d, n, p, c, f) \
70{ \
71 .name = #n, \
72 .parent = #p, \
73 .cdevs = (c), \
74 .md = (m), \
75 .pd = (d), \
76 .flags = (f), \
77}
78
79int davinci_psc_register_clocks(struct device *dev,
80 const struct davinci_lpsc_clk_info *info,
81 u8 num_clks,
82 void __iomem *base);
83
84int of_davinci_psc_clk_init(struct device *dev,
85 const struct davinci_lpsc_clk_info *info,
86 u8 num_clks,
87 void __iomem *base);
88
89/* Device-specific data */
90
91struct davinci_psc_init_data {
92 struct clk_bulk_data *parent_clks;
93 int num_parent_clks;
94 int (*psc_init)(struct device *dev, void __iomem *base);
95};
96
97#ifdef CONFIG_ARCH_DAVINCI_DA830
98extern const struct davinci_psc_init_data da830_psc0_init_data;
99extern const struct davinci_psc_init_data da830_psc1_init_data;
100#endif
101#ifdef CONFIG_ARCH_DAVINCI_DA850
102extern const struct davinci_psc_init_data da850_psc0_init_data;
103extern const struct davinci_psc_init_data da850_psc1_init_data;
104extern const struct davinci_psc_init_data of_da850_psc0_init_data;
105extern const struct davinci_psc_init_data of_da850_psc1_init_data;
106#endif
107#endif /* __CLK_DAVINCI_PSC_H__ */
108

source code of linux/drivers/clk/davinci/psc.h