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
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
|
/*
* MUSB OTG driver debugfs support
*
* Copyright 2010 Nokia Corporation
* Contact: Felipe Balbi <felipe.balbi@nokia.com>
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/kobject.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#ifdef CONFIG_ARM
#include <mach/hardware.h>
#include <mach/memory.h>
#include <asm/mach-types.h>
#endif
#include <asm/uaccess.h>
#include "musb_core.h"
#include "musb_debug.h"
#ifdef CONFIG_ARCH_DAVINCI
#include "davinci.h"
#endif
struct musb_register_map {
char *name;
unsigned offset;
unsigned size;
};
static const struct musb_register_map musb_regmap[] = {
{ "FAddr", 0x00, 8 },
{ "Power", 0x01, 8 },
{ "Frame", 0x0c, 16 },
{ "Index", 0x0e, 8 },
{ "Testmode", 0x0f, 8 },
{ "TxMaxPp", 0x10, 16 },
{ "TxCSRp", 0x12, 16 },
{ "RxMaxPp", 0x14, 16 },
{ "RxCSR", 0x16, 16 },
{ "RxCount", 0x18, 16 },
{ "ConfigData", 0x1f, 8 },
{ "DevCtl", 0x60, 8 },
{ "MISC", 0x61, 8 },
{ "TxFIFOsz", 0x62, 8 },
{ "RxFIFOsz", 0x63, 8 },
{ "TxFIFOadd", 0x64, 16 },
{ "RxFIFOadd", 0x66, 16 },
{ "VControl", 0x68, 32 },
{ "HWVers", 0x6C, 16 },
{ "EPInfo", 0x78, 8 },
{ "RAMInfo", 0x79, 8 },
{ "LinkInfo", 0x7A, 8 },
{ "VPLen", 0x7B, 8 },
{ "HS_EOF1", 0x7C, 8 },
{ "FS_EOF1", 0x7D, 8 },
{ "LS_EOF1", 0x7E, 8 },
{ "SOFT_RST", 0x7F, 8 },
{ "DMA_CNTLch0", 0x204, 16 },
{ "DMA_ADDRch0", 0x208, 32 },
{ "DMA_COUNTch0", 0x20C, 32 },
{ "DMA_CNTLch1", 0x214, 16 },
{ "DMA_ADDRch1", 0x218, 32 },
{ "DMA_COUNTch1", 0x21C, 32 },
{ "DMA_CNTLch2", 0x224, 16 },
{ "DMA_ADDRch2", 0x228, 32 },
{ "DMA_COUNTch2", 0x22C, 32 },
{ "DMA_CNTLch3", 0x234, 16 },
{ "DMA_ADDRch3", 0x238, 32 },
{ "DMA_COUNTch3", 0x23C, 32 },
{ "DMA_CNTLch4", 0x244, 16 },
{ "DMA_ADDRch4", 0x248, 32 },
{ "DMA_COUNTch4", 0x24C, 32 },
{ "DMA_CNTLch5", 0x254, 16 },
{ "DMA_ADDRch5", 0x258, 32 },
{ "DMA_COUNTch5", 0x25C, 32 },
{ "DMA_CNTLch6", 0x264, 16 },
{ "DMA_ADDRch6", 0x268, 32 },
{ "DMA_COUNTch6", 0x26C, 32 },
{ "DMA_CNTLch7", 0x274, 16 },
{ "DMA_ADDRch7", 0x278, 32 },
{ "DMA_COUNTch7", 0x27C, 32 },
{ } /* Terminating Entry */
};
static struct dentry *musb_debugfs_root;
static int musb_regdump_show(struct seq_file *s, void *unused)
{
struct musb *musb = s->private;
unsigned i;
seq_printf(s, "MUSB (M)HDRC Register Dump\n");
for (i = 0; i < ARRAY_SIZE(musb_regmap); i++) {
switch (musb_regmap[i].size) {
case 8:
seq_printf(s, "%-12s: %02x\n", musb_regmap[i].name,
musb_readb(musb->mregs, musb_regmap[i].offset));
break;
case 16:
seq_printf(s, "%-12s: %04x\n", musb_regmap[i].name,
musb_readw(musb->mregs, musb_regmap[i].offset));
break;
case 32:
seq_printf(s, "%-12s: %08x\n", musb_regmap[i].name,
musb_readl(musb->mregs, musb_regmap[i].offset));
break;
}
}
return 0;
}
static int musb_regdump_open(struct inode *inode, struct file *file)
{
return single_open(file, musb_regdump_show, inode->i_private);
}
static int musb_test_mode_show(struct seq_file *s, void *unused)
{
struct musb *musb = s->private;
unsigned test;
test = musb_readb(musb->mregs, MUSB_TESTMODE);
if (test & MUSB_TEST_FORCE_HOST)
seq_printf(s, "force host\n");
if (test & MUSB_TEST_FIFO_ACCESS)
seq_printf(s, "fifo access\n");
if (test & MUSB_TEST_FORCE_FS)
seq_printf(s, "force full-speed\n");
if (test & MUSB_TEST_FORCE_HS)
seq_printf(s, "force high-speed\n");
if (test & MUSB_TEST_PACKET)
seq_printf(s, "test packet\n");
if (test & MUSB_TEST_K)
seq_printf(s, "test K\n");
if (test & MUSB_TEST_J)
seq_printf(s, "test J\n");
if (test & MUSB_TEST_SE0_NAK)
seq_printf(s, "test SE0 NAK\n");
return 0;
}
static const struct file_operations musb_regdump_fops = {
.open = musb_regdump_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int musb_test_mode_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return single_open(file, musb_test_mode_show, inode->i_private);
}
static ssize_t musb_test_mode_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
struct musb *musb = file->private_data;
u8 test = 0;
char buf[18];
memset(buf, 0x00, sizeof(buf));
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
if (!strncmp(buf, "force host", 9))
test = MUSB_TEST_FORCE_HOST;
if (!strncmp(buf, "fifo access", 11))
test = MUSB_TEST_FIFO_ACCESS;
if (!strncmp(buf, "force full-speed", 15))
test = MUSB_TEST_FORCE_FS;
if (!strncmp(buf, "force high-speed", 15))
test = MUSB_TEST_FORCE_HS;
if (!strncmp(buf, "test packet", 10)) {
test = MUSB_TEST_PACKET;
musb_load_testpacket(musb);
}
if (!strncmp(buf, "test K", 6))
test = MUSB_TEST_K;
if (!strncmp(buf, "test J", 6))
test = MUSB_TEST_J;
if (!strncmp(buf, "test SE0 NAK", 12))
test = MUSB_TEST_SE0_NAK;
musb_writeb(musb->mregs, MUSB_TESTMODE, test);
return count;
}
static const struct file_operations musb_test_mode_fops = {
.open = musb_test_mode_open,
.write = musb_test_mode_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
int __init musb_init_debugfs(struct musb *musb)
{
struct dentry *root;
struct dentry *file;
int ret;
root = debugfs_create_dir("musb", NULL);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
goto err0;
}
file = debugfs_create_file("regdump", S_IRUGO, root, musb,
&musb_regdump_fops);
if (IS_ERR(file)) {
ret = PTR_ERR(file);
goto err1;
}
file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR,
root, musb, &musb_test_mode_fops);
if (IS_ERR(file)) {
ret = PTR_ERR(file);
goto err1;
}
musb_debugfs_root = root;
return 0;
err1:
debugfs_remove_recursive(root);
err0:
return ret;
}
void /* __init_or_exit */ musb_exit_debugfs(struct musb *musb)
{
debugfs_remove_recursive(musb_debugfs_root);
}
|
