aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ux500/clock.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-ux500/clock.h')
-rw-r--r--arch/arm/mach-ux500/clock.h164
1 files changed, 0 insertions, 164 deletions
diff --git a/arch/arm/mach-ux500/clock.h b/arch/arm/mach-ux500/clock.h
deleted file mode 100644
index 65d27a13f46d..000000000000
--- a/arch/arm/mach-ux500/clock.h
+++ /dev/null
@@ -1,164 +0,0 @@
1/*
2 * Copyright (C) 2010 ST-Ericsson
3 * Copyright (C) 2009 STMicroelectronics
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10/**
11 * struct clkops - ux500 clock operations
12 * @enable: function to enable the clock
13 * @disable: function to disable the clock
14 * @get_rate: function to get the current clock rate
15 *
16 * This structure contains function pointers to functions that will be used to
17 * control the clock. All of these functions are optional. If get_rate is
18 * NULL, the rate in the struct clk will be used.
19 */
20struct clkops {
21 void (*enable) (struct clk *);
22 void (*disable) (struct clk *);
23 unsigned long (*get_rate) (struct clk *);
24 int (*set_parent)(struct clk *, struct clk *);
25};
26
27/**
28 * struct clk - ux500 clock structure
29 * @ops: pointer to clkops struct used to control this clock
30 * @name: name, for debugging
31 * @enabled: refcount. positive if enabled, zero if disabled
32 * @get_rate: custom callback for getting the clock rate
33 * @data: custom per-clock data for example for the get_rate
34 * callback
35 * @rate: fixed rate for clocks which don't implement
36 * ops->getrate
37 * @prcmu_cg_off: address offset of the combined enable/disable register
38 * (used on u8500v1)
39 * @prcmu_cg_bit: bit in the combined enable/disable register (used on
40 * u8500v1)
41 * @prcmu_cg_mgt: address of the enable/disable register (used on
42 * u8500ed)
43 * @cluster: peripheral cluster number
44 * @prcc_bus: bit for the bus clock in the peripheral's CLKRST
45 * @prcc_kernel: bit for the kernel clock in the peripheral's CLKRST.
46 * -1 if no kernel clock exists.
47 * @parent_cluster: pointer to parent's cluster clk struct
48 * @parent_periph: pointer to parent's peripheral clk struct
49 *
50 * Peripherals are organised into clusters, and each cluster has an associated
51 * bus clock. Some peripherals also have a parent peripheral clock.
52 *
53 * In order to enable a clock for a peripheral, we need to enable:
54 * (1) the parent cluster (bus) clock at the PRCMU level
55 * (2) the parent peripheral clock (if any) at the PRCMU level
56 * (3) the peripheral's bus & kernel clock at the PRCC level
57 *
58 * (1) and (2) are handled by defining clk structs (DEFINE_PRCMU_CLK) for each
59 * of the cluster and peripheral clocks, and hooking these as the parents of
60 * the individual peripheral clocks.
61 *
62 * (3) is handled by specifying the bits in the PRCC control registers required
63 * to enable these clocks and modifying them in the ->enable and
64 * ->disable callbacks of the peripheral clocks (DEFINE_PRCC_CLK).
65 *
66 * This structure describes both the PRCMU-level clocks and PRCC-level clocks.
67 * The prcmu_* fields are only used for the PRCMU clocks, and the cluster,
68 * prcc, and parent pointers are only used for the PRCC-level clocks.
69 */
70struct clk {
71 const struct clkops *ops;
72 const char *name;
73 unsigned int enabled;
74 unsigned long (*get_rate)(struct clk *);
75 void *data;
76
77 unsigned long rate;
78 struct list_head list;
79
80 /* These three are only for PRCMU clks */
81
82 unsigned int prcmu_cg_off;
83 unsigned int prcmu_cg_bit;
84 unsigned int prcmu_cg_mgt;
85
86 /* The rest are only for PRCC clks */
87
88 int cluster;
89 unsigned int prcc_bus;
90 unsigned int prcc_kernel;
91
92 struct clk *parent_cluster;
93 struct clk *parent_periph;
94#if defined(CONFIG_DEBUG_FS)
95 struct dentry *dent; /* For visible tree hierarchy */
96 struct dentry *dent_bus; /* For visible tree hierarchy */
97#endif
98};
99
100#define DEFINE_PRCMU_CLK(_name, _cg_off, _cg_bit, _reg) \
101struct clk clk_##_name = { \
102 .name = #_name, \
103 .ops = &clk_prcmu_ops, \
104 .prcmu_cg_off = _cg_off, \
105 .prcmu_cg_bit = _cg_bit, \
106 .prcmu_cg_mgt = PRCM_##_reg##_MGT \
107 }
108
109#define DEFINE_PRCMU_CLK_RATE(_name, _cg_off, _cg_bit, _reg, _rate) \
110struct clk clk_##_name = { \
111 .name = #_name, \
112 .ops = &clk_prcmu_ops, \
113 .prcmu_cg_off = _cg_off, \
114 .prcmu_cg_bit = _cg_bit, \
115 .rate = _rate, \
116 .prcmu_cg_mgt = PRCM_##_reg##_MGT \
117 }
118
119#define DEFINE_PRCC_CLK(_pclust, _name, _bus_en, _kernel_en, _kernclk) \
120struct clk clk_##_name = { \
121 .name = #_name, \
122 .ops = &clk_prcc_ops, \
123 .cluster = _pclust, \
124 .prcc_bus = _bus_en, \
125 .prcc_kernel = _kernel_en, \
126 .parent_cluster = &clk_per##_pclust##clk, \
127 .parent_periph = _kernclk \
128 }
129
130#define DEFINE_PRCC_CLK_CUSTOM(_pclust, _name, _bus_en, _kernel_en, _kernclk, _callback, _data) \
131struct clk clk_##_name = { \
132 .name = #_name, \
133 .ops = &clk_prcc_ops, \
134 .cluster = _pclust, \
135 .prcc_bus = _bus_en, \
136 .prcc_kernel = _kernel_en, \
137 .parent_cluster = &clk_per##_pclust##clk, \
138 .parent_periph = _kernclk, \
139 .get_rate = _callback, \
140 .data = (void *) _data \
141 }
142
143
144#define CLK(_clk, _devname, _conname) \
145 { \
146 .clk = &clk_##_clk, \
147 .dev_id = _devname, \
148 .con_id = _conname, \
149 }
150
151int __init clk_db8500_ed_fixup(void);
152int __init clk_init(void);
153
154#ifdef CONFIG_DEBUG_FS
155int clk_debugfs_init(void);
156#else
157static inline int clk_debugfs_init(void) { return 0; }
158#endif
159
160#ifdef CONFIG_CPU_FREQ
161int clk_init_smp_twd_cpufreq(void);
162#else
163static inline int clk_init_smp_twd_cpufreq(void) { return 0; }
164#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-15 19:18:03 -0500