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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
/*
* arch/arm/mach-tegra/edp.c
*
* Copyright (C) 2011 NVIDIA, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307, USA
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <mach/edp.h>
#include "fuse.h"
static const struct tegra_edp_limits *edp_limits;
static int edp_limits_size;
/*
* Temperature step size cannot be less than 4C because of hysteresis
* delta
* Code assumes different temperatures for the same speedo_id /
* regulator_cur are adjacent in the table, and higest regulator_cur
* comes first
*/
static char __initdata tegra_edp_map[] = {
0x00, 0x2f, 0x2d, 0x82, 0x78, 0x78, 0x78, 0x00,
0x2f, 0x3c, 0x82, 0x78, 0x78, 0x78, 0x00, 0x2f,
0x4b, 0x82, 0x78, 0x78, 0x78, 0x00, 0x2f, 0x5a,
0x82, 0x78, 0x78, 0x78, 0x00, 0x28, 0x2d, 0x82,
0x78, 0x78, 0x78, 0x00, 0x28, 0x3c, 0x82, 0x78,
0x78, 0x78, 0x00, 0x28, 0x4b, 0x82, 0x78, 0x78,
0x73, 0x00, 0x28, 0x5a, 0x82, 0x78, 0x73, 0x69,
0x00, 0x23, 0x2d, 0x82, 0x78, 0x78, 0x78, 0x00,
0x23, 0x3c, 0x82, 0x78, 0x78, 0x6e, 0x00, 0x23,
0x4b, 0x82, 0x78, 0x78, 0x64, 0x00, 0x23, 0x5a,
0x82, 0x78, 0x6e, 0x5a, 0x00, 0x1e, 0x2d, 0x82,
0x78, 0x78, 0x69, 0x00, 0x1e, 0x3c, 0x82, 0x78,
0x78, 0x64, 0x00, 0x1e, 0x4b, 0x82, 0x78, 0x6e,
0x5a, 0x00, 0x1e, 0x5a, 0x82, 0x78, 0x64, 0x5a,
0x00, 0x19, 0x2d, 0x82, 0x78, 0x6e, 0x5a, 0x00,
0x19, 0x3c, 0x82, 0x78, 0x69, 0x55, 0x00, 0x19,
0x4b, 0x82, 0x78, 0x5f, 0x4b, 0x00, 0x19, 0x5a,
0x82, 0x73, 0x5a, 0x3c, 0x01, 0x2f, 0x2d, 0x82,
0x78, 0x78, 0x78, 0x01, 0x2f, 0x3c, 0x82, 0x78,
0x78, 0x78, 0x01, 0x2f, 0x4b, 0x82, 0x78, 0x78,
0x78, 0x01, 0x2f, 0x5a, 0x82, 0x78, 0x78, 0x78,
0x01, 0x28, 0x2d, 0x82, 0x78, 0x78, 0x78, 0x01,
0x28, 0x3c, 0x82, 0x78, 0x78, 0x78, 0x01, 0x28,
0x4b, 0x82, 0x78, 0x78, 0x73, 0x01, 0x28, 0x5a,
0x82, 0x78, 0x73, 0x69, 0x01, 0x23, 0x2d, 0x82,
0x78, 0x78, 0x78, 0x01, 0x23, 0x3c, 0x82, 0x78,
0x78, 0x6e, 0x01, 0x23, 0x4b, 0x82, 0x78, 0x78,
0x64, 0x01, 0x23, 0x5a, 0x82, 0x78, 0x6e, 0x5a,
0x01, 0x1e, 0x2d, 0x82, 0x78, 0x78, 0x69, 0x01,
0x1e, 0x3c, 0x82, 0x78, 0x78, 0x64, 0x01, 0x1e,
0x4b, 0x82, 0x78, 0x6e, 0x5a, 0x01, 0x1e, 0x5a,
0x82, 0x78, 0x64, 0x5a, 0x01, 0x19, 0x2d, 0x82,
0x78, 0x6e, 0x5a, 0x01, 0x19, 0x3c, 0x82, 0x78,
0x69, 0x55, 0x01, 0x19, 0x4b, 0x82, 0x78, 0x5f,
0x4b, 0x01, 0x19, 0x5a, 0x82, 0x73, 0x5a, 0x3c,
0x02, 0x3d, 0x2d, 0x8c, 0x82, 0x82, 0x82, 0x02,
0x3d, 0x3c, 0x8c, 0x82, 0x82, 0x82, 0x02, 0x3d,
0x4b, 0x8c, 0x82, 0x82, 0x82, 0x02, 0x3d, 0x5a,
0x8c, 0x82, 0x82, 0x82, 0x02, 0x32, 0x2d, 0x8c,
0x82, 0x82, 0x82, 0x02, 0x32, 0x3c, 0x8c, 0x82,
0x82, 0x82, 0x02, 0x32, 0x4b, 0x8c, 0x82, 0x82,
0x78, 0x02, 0x32, 0x5a, 0x8c, 0x82, 0x82, 0x6e,
0x02, 0x28, 0x2d, 0x8c, 0x82, 0x82, 0x78, 0x02,
0x28, 0x3c, 0x8c, 0x82, 0x82, 0x73, 0x02, 0x28,
0x4b, 0x8c, 0x82, 0x78, 0x6e, 0x02, 0x28, 0x5a,
0x8c, 0x82, 0x73, 0x5f, 0x02, 0x23, 0x2d, 0x8c,
0x82, 0x82, 0x6e, 0x02, 0x23, 0x3c, 0x8c, 0x82,
0x78, 0x69, 0x02, 0x23, 0x4b, 0x8c, 0x82, 0x73,
0x5f, 0x02, 0x23, 0x5a, 0x8c, 0x82, 0x69, 0x55,
0x03, 0x3d, 0x2d, 0x8c, 0x82, 0x82, 0x82, 0x03,
0x3d, 0x3c, 0x8c, 0x82, 0x82, 0x82, 0x03, 0x3d,
0x4b, 0x8c, 0x82, 0x82, 0x82, 0x03, 0x3d, 0x5a,
0x8c, 0x82, 0x82, 0x82, 0x03, 0x32, 0x2d, 0x8c,
0x82, 0x82, 0x82, 0x03, 0x32, 0x3c, 0x8c, 0x82,
0x82, 0x82, 0x03, 0x32, 0x4b, 0x8c, 0x82, 0x82,
0x73, 0x03, 0x32, 0x5a, 0x8c, 0x82, 0x82, 0x6e,
0x03, 0x28, 0x2d, 0x8c, 0x82, 0x82, 0x78, 0x03,
0x28, 0x3c, 0x8c, 0x82, 0x82, 0x73, 0x03, 0x28,
0x4b, 0x8c, 0x82, 0x7d, 0x6e, 0x03, 0x28, 0x5a,
0x8c, 0x82, 0x73, 0x5f, 0x03, 0x23, 0x2d, 0x8c,
0x82, 0x82, 0x6e, 0x03, 0x23, 0x3c, 0x8c, 0x82,
0x78, 0x6e, 0x03, 0x23, 0x4b, 0x8c, 0x82, 0x78,
0x5f, 0x03, 0x23, 0x5a, 0x8c, 0x82, 0x6e, 0x5a,
};
/*
* "Safe entry" to be used when no match for speedo_id /
* regulator_cur is found; must be the last one
*/
static struct tegra_edp_limits edp_default_limits[] = {
{90, {1000000, 1000000, 1000000, 1000000} },
};
/*
* Specify regulator current in mA, e.g. 5000mA
* Use 0 for default
*/
void __init tegra_init_cpu_edp_limits(unsigned int regulator_mA)
{
int cpu_speedo_id = tegra_cpu_speedo_id();
int i, j;
struct tegra_edp_limits *e;
struct tegra_edp_entry *t = (struct tegra_edp_entry *)tegra_edp_map;
int tsize = sizeof(tegra_edp_map)/sizeof(struct tegra_edp_entry);
if (!regulator_mA) {
edp_limits = edp_default_limits;
edp_limits_size = ARRAY_SIZE(edp_default_limits);
return;
}
for (i = 0; i < tsize; i++) {
if (t[i].speedo_id == cpu_speedo_id &&
t[i].regulator_100mA <= regulator_mA / 100)
break;
}
/* No entry found in tegra_edp_map */
if (i >= tsize) {
edp_limits = edp_default_limits;
edp_limits_size = ARRAY_SIZE(edp_default_limits);
return;
}
/* Find all rows for this entry */
for (j = i + 1; j < tsize; j++) {
if (t[i].speedo_id != t[j].speedo_id ||
t[i].regulator_100mA != t[j].regulator_100mA)
break;
}
edp_limits_size = j - i;
e = kmalloc(sizeof(struct tegra_edp_limits) * edp_limits_size,
GFP_KERNEL);
BUG_ON(!e);
for (j = 0; j < edp_limits_size; j++) {
e[j].temperature = (int)t[i+j].temperature;
e[j].freq_limits[0] = (unsigned int)t[i+j].freq_limits[0] * 10000;
e[j].freq_limits[1] = (unsigned int)t[i+j].freq_limits[1] * 10000;
e[j].freq_limits[2] = (unsigned int)t[i+j].freq_limits[2] * 10000;
e[j].freq_limits[3] = (unsigned int)t[i+j].freq_limits[3] * 10000;
}
if (edp_limits && edp_limits != edp_default_limits)
kfree(edp_limits);
edp_limits = e;
}
void tegra_get_cpu_edp_limits(const struct tegra_edp_limits **limits, int *size)
{
*limits = edp_limits;
*size = edp_limits_size;
}
#ifdef CONFIG_DEBUG_FS
static int edp_limit_debugfs_show(struct seq_file *s, void *data)
{
seq_printf(s, "%u\n", tegra_get_edp_limit());
}
static int edp_debugfs_show(struct seq_file *s, void *data)
{
int i;
const struct tegra_edp_limits *limits;
int size;
tegra_get_cpu_edp_limits(&limits, &size);
seq_printf(s, "-- EDP table --\n");
for (i = 0; i < size; i++) {
seq_printf(s, "%4dC: %10d %10d %10d %10d\n",
limits[i].temperature,
limits[i].freq_limits[0],
limits[i].freq_limits[1],
limits[i].freq_limits[2],
limits[i].freq_limits[3]);
}
return 0;
}
static int edp_debugfs_open(struct inode *inode, struct file *file)
{
return single_open(file, edp_debugfs_show, inode->i_private);
}
static int edp_limit_debugfs_open(struct inode *inode, struct file *file)
{
return single_open(file, edp_limit_debugfs_show, inode->i_private);
}
static const struct file_operations edp_debugfs_fops = {
.open = edp_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static const struct file_operations edp_limit_debugfs_fops = {
.open = edp_limit_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int __init tegra_edp_debugfs_init()
{
struct dentry *d;
d = debugfs_create_file("edp", S_IRUGO, NULL, NULL,
&edp_debugfs_fops);
if (!d)
return -ENOMEM;
d = debugfs_create_file("edp_limit", S_IRUGO, NULL, NULL,
&edp_limit_debugfs_fops);
return 0;
}
late_initcall(tegra_edp_debugfs_init);
#endif /* CONFIG_DEBUG_FS */
|
