1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/clk/at91_pmc.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <asm/proc-fns.h>
#include "pmc.h"
void __iomem *at91_pmc_base;
EXPORT_SYMBOL_GPL(at91_pmc_base);
void at91rm9200_idle(void)
{
/*
* Disable the processor clock. The processor will be automatically
* re-enabled by an interrupt or by a reset.
*/
at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK);
}
void at91sam9_idle(void)
{
at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK);
cpu_do_idle();
}
int of_at91_get_clk_range(struct device_node *np, const char *propname,
struct clk_range *range)
{
u32 min, max;
int ret;
ret = of_property_read_u32_index(np, propname, 0, &min);
if (ret)
return ret;
ret = of_property_read_u32_index(np, propname, 1, &max);
if (ret)
return ret;
if (range) {
range->min = min;
range->max = max;
}
return 0;
}
EXPORT_SYMBOL_GPL(of_at91_get_clk_range);
static const struct at91_pmc_caps at91rm9200_caps = {
.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_LOCKB |
AT91_PMC_MCKRDY | AT91_PMC_PCK0RDY |
AT91_PMC_PCK1RDY | AT91_PMC_PCK2RDY |
AT91_PMC_PCK3RDY,
};
static const struct at91_pmc_caps at91sam9260_caps = {
.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_LOCKB |
AT91_PMC_MCKRDY | AT91_PMC_PCK0RDY |
AT91_PMC_PCK1RDY,
};
static const struct at91_pmc_caps at91sam9g45_caps = {
.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_MCKRDY |
AT91_PMC_LOCKU | AT91_PMC_PCK0RDY |
AT91_PMC_PCK1RDY,
};
static const struct at91_pmc_caps at91sam9n12_caps = {
.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_LOCKB |
AT91_PMC_MCKRDY | AT91_PMC_PCK0RDY |
AT91_PMC_PCK1RDY | AT91_PMC_MOSCSELS |
AT91_PMC_MOSCRCS | AT91_PMC_CFDEV,
};
static const struct at91_pmc_caps at91sam9x5_caps = {
.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_MCKRDY |
AT91_PMC_LOCKU | AT91_PMC_PCK0RDY |
AT91_PMC_PCK1RDY | AT91_PMC_MOSCSELS |
AT91_PMC_MOSCRCS | AT91_PMC_CFDEV,
};
static const struct at91_pmc_caps sama5d2_caps = {
.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_MCKRDY |
AT91_PMC_LOCKU | AT91_PMC_PCK0RDY |
AT91_PMC_PCK1RDY | AT91_PMC_PCK2RDY |
AT91_PMC_MOSCSELS | AT91_PMC_MOSCRCS |
AT91_PMC_CFDEV | AT91_PMC_GCKRDY,
};
static const struct at91_pmc_caps sama5d3_caps = {
.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_MCKRDY |
AT91_PMC_LOCKU | AT91_PMC_PCK0RDY |
AT91_PMC_PCK1RDY | AT91_PMC_PCK2RDY |
AT91_PMC_MOSCSELS | AT91_PMC_MOSCRCS |
AT91_PMC_CFDEV,
};
static struct at91_pmc *__init at91_pmc_init(struct device_node *np,
struct regmap *regmap,
void __iomem *regbase,
const struct at91_pmc_caps *caps)
{
struct at91_pmc *pmc;
if (!regbase || !caps)
return NULL;
at91_pmc_base = regbase;
pmc = kzalloc(sizeof(*pmc), GFP_KERNEL);
if (!pmc)
return NULL;
pmc->regmap = regmap;
pmc->caps = caps;
regmap_write(pmc->regmap, AT91_PMC_IDR, 0xffffffff);
return pmc;
}
static void __init of_at91_pmc_setup(struct device_node *np,
const struct at91_pmc_caps *caps)
{
struct at91_pmc *pmc;
void __iomem *regbase = of_iomap(np, 0);
struct regmap *regmap;
regmap = syscon_node_to_regmap(np);
if (IS_ERR(regmap))
panic("Could not retrieve syscon regmap");
pmc = at91_pmc_init(np, regmap, regbase, caps);
if (!pmc)
return;
}
static void __init of_at91rm9200_pmc_setup(struct device_node *np)
{
of_at91_pmc_setup(np, &at91rm9200_caps);
}
CLK_OF_DECLARE(at91rm9200_clk_pmc, "atmel,at91rm9200-pmc",
of_at91rm9200_pmc_setup);
static void __init of_at91sam9260_pmc_setup(struct device_node *np)
{
of_at91_pmc_setup(np, &at91sam9260_caps);
}
CLK_OF_DECLARE(at91sam9260_clk_pmc, "atmel,at91sam9260-pmc",
of_at91sam9260_pmc_setup);
static void __init of_at91sam9g45_pmc_setup(struct device_node *np)
{
of_at91_pmc_setup(np, &at91sam9g45_caps);
}
CLK_OF_DECLARE(at91sam9g45_clk_pmc, "atmel,at91sam9g45-pmc",
of_at91sam9g45_pmc_setup);
static void __init of_at91sam9n12_pmc_setup(struct device_node *np)
{
of_at91_pmc_setup(np, &at91sam9n12_caps);
}
CLK_OF_DECLARE(at91sam9n12_clk_pmc, "atmel,at91sam9n12-pmc",
of_at91sam9n12_pmc_setup);
static void __init of_at91sam9x5_pmc_setup(struct device_node *np)
{
of_at91_pmc_setup(np, &at91sam9x5_caps);
}
CLK_OF_DECLARE(at91sam9x5_clk_pmc, "atmel,at91sam9x5-pmc",
of_at91sam9x5_pmc_setup);
static void __init of_sama5d2_pmc_setup(struct device_node *np)
{
of_at91_pmc_setup(np, &sama5d2_caps);
}
CLK_OF_DECLARE(sama5d2_clk_pmc, "atmel,sama5d2-pmc",
of_sama5d2_pmc_setup);
static void __init of_sama5d3_pmc_setup(struct device_node *np)
{
of_at91_pmc_setup(np, &sama5d3_caps);
}
CLK_OF_DECLARE(sama5d3_clk_pmc, "atmel,sama5d3-pmc",
of_sama5d3_pmc_setup);
|
