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9ad5897c TL |
1 | /* |
2 | * linux/include/asm-arm/arch-omap/clock.h | |
3 | * | |
4 | * Copyright (C) 2004 - 2005 Nokia corporation | |
5 | * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> | |
6 | * Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #ifndef __ARCH_ARM_OMAP_CLOCK_H | |
14 | #define __ARCH_ARM_OMAP_CLOCK_H | |
15 | ||
16 | struct module; | |
6b8858a9 PW |
17 | struct clk; |
18 | ||
b045d080 | 19 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) |
6b8858a9 PW |
20 | |
21 | struct clksel_rate { | |
22 | u8 div; | |
23 | u32 val; | |
24 | u8 flags; | |
25 | }; | |
26 | ||
27 | struct clksel { | |
28 | struct clk *parent; | |
29 | const struct clksel_rate *rates; | |
30 | }; | |
31 | ||
32 | struct dpll_data { | |
33 | void __iomem *mult_div1_reg; | |
34 | u32 mult_mask; | |
35 | u32 div1_mask; | |
b045d080 PW |
36 | # if defined(CONFIG_ARCH_OMAP3) |
37 | void __iomem *control_reg; | |
38 | u32 enable_mask; | |
39 | u8 auto_recal_bit; | |
40 | u8 recal_en_bit; | |
41 | u8 recal_st_bit; | |
42 | # endif | |
6b8858a9 PW |
43 | }; |
44 | ||
45 | #endif | |
9ad5897c TL |
46 | |
47 | struct clk { | |
48 | struct list_head node; | |
49 | struct module *owner; | |
50 | const char *name; | |
b824efae | 51 | int id; |
9ad5897c TL |
52 | struct clk *parent; |
53 | unsigned long rate; | |
54 | __u32 flags; | |
55 | void __iomem *enable_reg; | |
56 | __u8 enable_bit; | |
9ad5897c TL |
57 | __s8 usecount; |
58 | void (*recalc)(struct clk *); | |
59 | int (*set_rate)(struct clk *, unsigned long); | |
60 | long (*round_rate)(struct clk *, unsigned long); | |
61 | void (*init)(struct clk *); | |
62 | int (*enable)(struct clk *); | |
63 | void (*disable)(struct clk *); | |
b045d080 | 64 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) |
6b8858a9 PW |
65 | u8 fixed_div; |
66 | void __iomem *clksel_reg; | |
67 | u32 clksel_mask; | |
68 | const struct clksel *clksel; | |
69 | const struct dpll_data *dpll_data; | |
70 | #else | |
71 | __u8 rate_offset; | |
72 | __u8 src_offset; | |
73 | #endif | |
137b3ee2 HD |
74 | #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS) |
75 | struct dentry *dent; /* For visible tree hierarchy */ | |
76 | #endif | |
9ad5897c TL |
77 | }; |
78 | ||
b851cb28 RK |
79 | struct cpufreq_frequency_table; |
80 | ||
9ad5897c TL |
81 | struct clk_functions { |
82 | int (*clk_enable)(struct clk *clk); | |
83 | void (*clk_disable)(struct clk *clk); | |
9ad5897c TL |
84 | long (*clk_round_rate)(struct clk *clk, unsigned long rate); |
85 | int (*clk_set_rate)(struct clk *clk, unsigned long rate); | |
86 | int (*clk_set_parent)(struct clk *clk, struct clk *parent); | |
87 | struct clk * (*clk_get_parent)(struct clk *clk); | |
88 | void (*clk_allow_idle)(struct clk *clk); | |
89 | void (*clk_deny_idle)(struct clk *clk); | |
90afd5cb | 90 | void (*clk_disable_unused)(struct clk *clk); |
b851cb28 RK |
91 | #ifdef CONFIG_CPU_FREQ |
92 | void (*clk_init_cpufreq_table)(struct cpufreq_frequency_table **); | |
93 | #endif | |
9ad5897c TL |
94 | }; |
95 | ||
96 | extern unsigned int mpurate; | |
9ad5897c TL |
97 | |
98 | extern int clk_init(struct clk_functions * custom_clocks); | |
99 | extern int clk_register(struct clk *clk); | |
100 | extern void clk_unregister(struct clk *clk); | |
101 | extern void propagate_rate(struct clk *clk); | |
6b8858a9 | 102 | extern void recalculate_root_clocks(void); |
9ad5897c TL |
103 | extern void followparent_recalc(struct clk * clk); |
104 | extern void clk_allow_idle(struct clk *clk); | |
105 | extern void clk_deny_idle(struct clk *clk); | |
b824efae | 106 | extern int clk_get_usecount(struct clk *clk); |
6b8858a9 | 107 | extern void clk_enable_init_clocks(void); |
9ad5897c TL |
108 | |
109 | /* Clock flags */ | |
110 | #define RATE_CKCTL (1 << 0) /* Main fixed ratio clocks */ | |
111 | #define RATE_FIXED (1 << 1) /* Fixed clock rate */ | |
112 | #define RATE_PROPAGATES (1 << 2) /* Program children too */ | |
113 | #define VIRTUAL_CLOCK (1 << 3) /* Composite clock from table */ | |
114 | #define ALWAYS_ENABLED (1 << 4) /* Clock cannot be disabled */ | |
115 | #define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */ | |
116 | #define VIRTUAL_IO_ADDRESS (1 << 6) /* Clock in virtual address */ | |
117 | #define CLOCK_IDLE_CONTROL (1 << 7) | |
118 | #define CLOCK_NO_IDLE_PARENT (1 << 8) | |
119 | #define DELAYED_APP (1 << 9) /* Delay application of clock */ | |
120 | #define CONFIG_PARTICIPANT (1 << 10) /* Fundamental clock */ | |
6b8858a9 PW |
121 | #define ENABLE_ON_INIT (1 << 11) /* Enable upon framework init */ |
122 | #define INVERT_ENABLE (1 << 12) /* 0 enables, 1 disables */ | |
123 | /* bits 13-20 are currently free */ | |
b824efae TL |
124 | #define CLOCK_IN_OMAP310 (1 << 21) |
125 | #define CLOCK_IN_OMAP730 (1 << 22) | |
126 | #define CLOCK_IN_OMAP1510 (1 << 23) | |
127 | #define CLOCK_IN_OMAP16XX (1 << 24) | |
128 | #define CLOCK_IN_OMAP242X (1 << 25) | |
129 | #define CLOCK_IN_OMAP243X (1 << 26) | |
6b8858a9 PW |
130 | #define CLOCK_IN_OMAP343X (1 << 27) /* clocks common to all 343X */ |
131 | #define PARENT_CONTROLS_CLOCK (1 << 28) | |
132 | #define CLOCK_IN_OMAP3430ES1 (1 << 29) /* 3430ES1 clocks only */ | |
133 | #define CLOCK_IN_OMAP3430ES2 (1 << 30) /* 3430ES2 clocks only */ | |
134 | ||
135 | /* Clksel_rate flags */ | |
136 | #define DEFAULT_RATE (1 << 0) | |
137 | #define RATE_IN_242X (1 << 1) | |
138 | #define RATE_IN_243X (1 << 2) | |
139 | #define RATE_IN_343X (1 << 3) /* rates common to all 343X */ | |
140 | #define RATE_IN_3430ES2 (1 << 4) /* 3430ES2 rates only */ | |
141 | ||
142 | #define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X) | |
143 | ||
9ad5897c | 144 | |
44595982 PW |
145 | /* CM_CLKSEL2_PLL.CORE_CLK_SRC options (24XX) */ |
146 | #define CORE_CLK_SRC_32K 0 | |
147 | #define CORE_CLK_SRC_DPLL 1 | |
148 | #define CORE_CLK_SRC_DPLL_X2 2 | |
149 | ||
9ad5897c | 150 | #endif |