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
295
296
297
298
|
/******************************************************************************
*
* Copyright (C) 2009-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* Filename: upio.c
*
* Description: Contains I/O functions, like
* rfkill control
* BT_WAKE/HOST_WAKE control
*
******************************************************************************/
#define LOG_TAG "bt_upio"
#include <utils/Log.h>
#include <fcntl.h>
#include <errno.h>
#include <cutils/properties.h>
#include "bt_vendor_brcm.h"
#include "upio.h"
#include "userial_vendor.h"
/******************************************************************************
** Constants & Macros
******************************************************************************/
#ifndef UPIO_DBG
#define UPIO_DBG FALSE
#endif
#if (UPIO_DBG == TRUE)
#define UPIODBG(param, ...) {ALOGD(param, ## __VA_ARGS__);}
#else
#define UPIODBG(param, ...) {}
#endif
/******************************************************************************
** Local type definitions
******************************************************************************/
/******************************************************************************
** Static variables
******************************************************************************/
static uint8_t upio_state[UPIO_MAX_COUNT];
static int rfkill_id = -1;
static int bt_emul_enable = 0;
static char *rfkill_state_path = NULL;
/******************************************************************************
** Static functions
******************************************************************************/
/* for friendly debugging outpout string */
static char *lpm_state[] = {
"UNKNOWN",
"de-asserted",
"asserted"
};
/*****************************************************************************
** Bluetooth On/Off Static Functions
*****************************************************************************/
static int is_emulator_context(void)
{
char value[PROPERTY_VALUE_MAX];
property_get("ro.kernel.qemu", value, "0");
UPIODBG("is_emulator_context : %s", value);
if (strcmp(value, "1") == 0) {
return 1;
}
return 0;
}
static int is_rfkill_disabled(void)
{
char value[PROPERTY_VALUE_MAX];
property_get("ro.rfkilldisabled", value, "0");
UPIODBG("is_rfkill_disabled ? [%s]", value);
if (strcmp(value, "1") == 0) {
return UPIO_BT_POWER_ON;
}
return UPIO_BT_POWER_OFF;
}
static int init_rfkill()
{
char path[64];
char buf[16];
int fd, sz, id;
if (is_rfkill_disabled())
return -1;
for (id = 0; ; id++)
{
snprintf(path, sizeof(path), "/sys/class/rfkill/rfkill%d/type", id);
fd = open(path, O_RDONLY);
if (fd < 0)
{
ALOGE("init_rfkill : open(%s) failed: %s (%d)\n", \
path, strerror(errno), errno);
return -1;
}
sz = read(fd, &buf, sizeof(buf));
close(fd);
if (sz >= 9 && memcmp(buf, "bluetooth", 9) == 0)
{
rfkill_id = id;
break;
}
}
asprintf(&rfkill_state_path, "/sys/class/rfkill/rfkill%d/state", rfkill_id);
return 0;
}
/*****************************************************************************
** LPM Static Functions
*****************************************************************************/
/*****************************************************************************
** UPIO Interface Functions
*****************************************************************************/
/*******************************************************************************
**
** Function upio_init
**
** Description Initialization
**
** Returns None
**
*******************************************************************************/
void upio_init(void)
{
memset(upio_state, UPIO_UNKNOWN, UPIO_MAX_COUNT);
}
/*******************************************************************************
**
** Function upio_cleanup
**
** Description Clean up
**
** Returns None
**
*******************************************************************************/
void upio_cleanup(void)
{
}
/*******************************************************************************
**
** Function upio_set_bluetooth_power
**
** Description Interact with low layer driver to set Bluetooth power
** on/off.
**
** Returns 0 : SUCCESS or Not-Applicable
** <0 : ERROR
**
*******************************************************************************/
int upio_set_bluetooth_power(int on)
{
int sz;
int fd = -1;
int ret = -1;
char buffer = '0';
switch(on)
{
case UPIO_BT_POWER_OFF:
buffer = '0';
break;
case UPIO_BT_POWER_ON:
buffer = '1';
break;
}
if (is_emulator_context())
{
/* if new value is same as current, return -1 */
if (bt_emul_enable == on)
return ret;
UPIODBG("set_bluetooth_power [emul] %d", on);
bt_emul_enable = on;
return 0;
}
/* check if we have rfkill interface */
if (is_rfkill_disabled())
return 0;
if (rfkill_id == -1)
{
if (init_rfkill())
return ret;
}
fd = open(rfkill_state_path, O_WRONLY);
if (fd < 0)
{
ALOGE("set_bluetooth_power : open(%s) for write failed: %s (%d)",
rfkill_state_path, strerror(errno), errno);
return ret;
}
sz = write(fd, &buffer, 1);
if (sz < 0) {
ALOGE("set_bluetooth_power : write(%s) failed: %s (%d)",
rfkill_state_path, strerror(errno),errno);
}
else
ret = 0;
if (fd >= 0)
close(fd);
return ret;
}
/*******************************************************************************
**
** Function upio_set
**
** Description Set i/o based on polarity
**
** Returns None
**
*******************************************************************************/
void upio_set(uint8_t pio, uint8_t action, uint8_t polarity)
{
int rc;
switch (pio)
{
case UPIO_BT_WAKE:
if (upio_state[UPIO_BT_WAKE] == action)
{
UPIODBG("BT_WAKE is %s already", lpm_state[action]);
return;
}
upio_state[UPIO_BT_WAKE] = action;
/****************************************
* !!! TODO !!!
*
* === Custom Porting Required ===
*
* Platform dependent user-to-kernel
* interface is required to set output
* state of physical BT_WAKE pin.
****************************************/
#if (BT_WAKE_VIA_USERIAL_IOCTL == TRUE)
userial_vendor_ioctl( ( (action==UPIO_ASSERT) ? \
USERIAL_OP_ASSERT_BT_WAKE : USERIAL_OP_DEASSERT_BT_WAKE),\
NULL);
#endif
break;
case UPIO_HOST_WAKE:
UPIODBG("upio_set: UPIO_HOST_WAKE");
break;
}
}
|
