blob: 1a745b5887acce5fd995c9bcbfde4832aca6c6af
1 | /****************************************************************************** |
2 | * |
3 | * Copyright (C) 2009-2012 Broadcom Corporation |
4 | * |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. |
7 | * You may obtain a copy of the License at: |
8 | * |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * |
11 | * Unless required by applicable law or agreed to in writing, software |
12 | * distributed under the License is distributed on an "AS IS" BASIS, |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
14 | * See the License for the specific language governing permissions and |
15 | * limitations under the License. |
16 | * |
17 | ******************************************************************************/ |
18 | |
19 | /****************************************************************************** |
20 | * |
21 | * Filename: userial_vendor.c |
22 | * |
23 | * Description: Contains vendor-specific userial functions |
24 | * |
25 | ******************************************************************************/ |
26 | |
27 | #define LOG_TAG "bt_userial_vendor" |
28 | |
29 | #include <utils/Log.h> |
30 | #include <termios.h> |
31 | #include <fcntl.h> |
32 | #include <errno.h> |
33 | #include <stdio.h> |
34 | #include "bt_vendor_brcm.h" |
35 | #include "userial.h" |
36 | #include "userial_vendor.h" |
37 | |
38 | /****************************************************************************** |
39 | ** Constants & Macros |
40 | ******************************************************************************/ |
41 | |
42 | #ifndef VNDUSERIAL_DBG |
43 | #define VNDUSERIAL_DBG FALSE |
44 | #endif |
45 | |
46 | #if (VNDUSERIAL_DBG == TRUE) |
47 | #define VNDUSERIALDBG(param, ...) {ALOGD(param, ## __VA_ARGS__);} |
48 | #else |
49 | #define VNDUSERIALDBG(param, ...) {} |
50 | #endif |
51 | |
52 | #define VND_PORT_NAME_MAXLEN 256 |
53 | |
54 | /****************************************************************************** |
55 | ** Local type definitions |
56 | ******************************************************************************/ |
57 | |
58 | /* vendor serial control block */ |
59 | typedef struct |
60 | { |
61 | int fd; /* fd to Bluetooth device */ |
62 | struct termios termios; /* serial terminal of BT port */ |
63 | char port_name[VND_PORT_NAME_MAXLEN]; |
64 | } vnd_userial_cb_t; |
65 | |
66 | /****************************************************************************** |
67 | ** Static variables |
68 | ******************************************************************************/ |
69 | |
70 | static vnd_userial_cb_t vnd_userial; |
71 | |
72 | /***************************************************************************** |
73 | ** Helper Functions |
74 | *****************************************************************************/ |
75 | |
76 | /******************************************************************************* |
77 | ** |
78 | ** Function userial_to_tcio_baud |
79 | ** |
80 | ** Description helper function converts USERIAL baud rates into TCIO |
81 | ** conforming baud rates |
82 | ** |
83 | ** Returns TRUE/FALSE |
84 | ** |
85 | *******************************************************************************/ |
86 | uint8_t userial_to_tcio_baud(uint8_t cfg_baud, uint32_t *baud) |
87 | { |
88 | if (cfg_baud == USERIAL_BAUD_115200) |
89 | *baud = B115200; |
90 | else if (cfg_baud == USERIAL_BAUD_4M) |
91 | *baud = B4000000; |
92 | else if (cfg_baud == USERIAL_BAUD_3M) |
93 | *baud = B3000000; |
94 | else if (cfg_baud == USERIAL_BAUD_2M) |
95 | *baud = B2000000; |
96 | else if (cfg_baud == USERIAL_BAUD_1M) |
97 | *baud = B1000000; |
98 | else if (cfg_baud == USERIAL_BAUD_921600) |
99 | *baud = B921600; |
100 | else if (cfg_baud == USERIAL_BAUD_460800) |
101 | *baud = B460800; |
102 | else if (cfg_baud == USERIAL_BAUD_230400) |
103 | *baud = B230400; |
104 | else if (cfg_baud == USERIAL_BAUD_57600) |
105 | *baud = B57600; |
106 | else if (cfg_baud == USERIAL_BAUD_19200) |
107 | *baud = B19200; |
108 | else if (cfg_baud == USERIAL_BAUD_9600) |
109 | *baud = B9600; |
110 | else if (cfg_baud == USERIAL_BAUD_1200) |
111 | *baud = B1200; |
112 | else if (cfg_baud == USERIAL_BAUD_600) |
113 | *baud = B600; |
114 | else |
115 | { |
116 | ALOGE( "userial vendor open: unsupported baud idx %i", cfg_baud); |
117 | *baud = B115200; |
118 | return FALSE; |
119 | } |
120 | |
121 | return TRUE; |
122 | } |
123 | |
124 | #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
125 | /******************************************************************************* |
126 | ** |
127 | ** Function userial_ioctl_init_bt_wake |
128 | ** |
129 | ** Description helper function to set the open state of the bt_wake if ioctl |
130 | ** is used. it should not hurt in the rfkill case but it might |
131 | ** be better to compile it out. |
132 | ** |
133 | ** Returns none |
134 | ** |
135 | *******************************************************************************/ |
136 | void userial_ioctl_init_bt_wake(int fd) |
137 | { |
138 | uint32_t bt_wake_state; |
139 | |
140 | /* assert BT_WAKE through ioctl */ |
141 | ioctl(fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL); |
142 | ioctl(fd, USERIAL_IOCTL_BT_WAKE_GET_ST, &bt_wake_state); |
143 | VNDUSERIALDBG("userial_ioctl_init_bt_wake read back BT_WAKE state=%i", \ |
144 | bt_wake_state); |
145 | } |
146 | #endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
147 | |
148 | |
149 | /***************************************************************************** |
150 | ** Userial Vendor API Functions |
151 | *****************************************************************************/ |
152 | |
153 | /******************************************************************************* |
154 | ** |
155 | ** Function userial_vendor_init |
156 | ** |
157 | ** Description Initialize userial vendor-specific control block |
158 | ** |
159 | ** Returns None |
160 | ** |
161 | *******************************************************************************/ |
162 | void userial_vendor_init(void) |
163 | { |
164 | vnd_userial.fd = -1; |
165 | snprintf(vnd_userial.port_name, VND_PORT_NAME_MAXLEN, "%s", \ |
166 | BLUETOOTH_UART_DEVICE_PORT); |
167 | } |
168 | |
169 | /******************************************************************************* |
170 | ** |
171 | ** Function userial_vendor_open |
172 | ** |
173 | ** Description Open the serial port with the given configuration |
174 | ** |
175 | ** Returns device fd |
176 | ** |
177 | *******************************************************************************/ |
178 | int userial_vendor_open(tUSERIAL_CFG *p_cfg) |
179 | { |
180 | uint32_t baud; |
181 | uint8_t data_bits; |
182 | uint16_t parity; |
183 | uint8_t stop_bits; |
184 | |
185 | vnd_userial.fd = -1; |
186 | |
187 | if (!userial_to_tcio_baud(p_cfg->baud, &baud)) |
188 | { |
189 | return -1; |
190 | } |
191 | |
192 | if(p_cfg->fmt & USERIAL_DATABITS_8) |
193 | data_bits = CS8; |
194 | else if(p_cfg->fmt & USERIAL_DATABITS_7) |
195 | data_bits = CS7; |
196 | else if(p_cfg->fmt & USERIAL_DATABITS_6) |
197 | data_bits = CS6; |
198 | else if(p_cfg->fmt & USERIAL_DATABITS_5) |
199 | data_bits = CS5; |
200 | else |
201 | { |
202 | ALOGE("userial vendor open: unsupported data bits"); |
203 | return -1; |
204 | } |
205 | |
206 | if(p_cfg->fmt & USERIAL_PARITY_NONE) |
207 | parity = 0; |
208 | else if(p_cfg->fmt & USERIAL_PARITY_EVEN) |
209 | parity = PARENB; |
210 | else if(p_cfg->fmt & USERIAL_PARITY_ODD) |
211 | parity = (PARENB | PARODD); |
212 | else |
213 | { |
214 | ALOGE("userial vendor open: unsupported parity bit mode"); |
215 | return -1; |
216 | } |
217 | |
218 | if(p_cfg->fmt & USERIAL_STOPBITS_1) |
219 | stop_bits = 0; |
220 | else if(p_cfg->fmt & USERIAL_STOPBITS_2) |
221 | stop_bits = CSTOPB; |
222 | else |
223 | { |
224 | ALOGE("userial vendor open: unsupported stop bits"); |
225 | return -1; |
226 | } |
227 | |
228 | ALOGI("userial vendor open: opening %s", vnd_userial.port_name); |
229 | |
230 | if ((vnd_userial.fd = open(vnd_userial.port_name, O_RDWR)) == -1) |
231 | { |
232 | ALOGE("userial vendor open: unable to open %s", vnd_userial.port_name); |
233 | return -1; |
234 | } |
235 | |
236 | tcflush(vnd_userial.fd, TCIOFLUSH); |
237 | |
238 | tcgetattr(vnd_userial.fd, &vnd_userial.termios); |
239 | cfmakeraw(&vnd_userial.termios); |
240 | vnd_userial.termios.c_cflag |= (CRTSCTS | stop_bits); |
241 | tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); |
242 | tcflush(vnd_userial.fd, TCIOFLUSH); |
243 | |
244 | tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); |
245 | tcflush(vnd_userial.fd, TCIOFLUSH); |
246 | tcflush(vnd_userial.fd, TCIOFLUSH); |
247 | |
248 | /* set input/output baudrate */ |
249 | cfsetospeed(&vnd_userial.termios, baud); |
250 | cfsetispeed(&vnd_userial.termios, baud); |
251 | tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); |
252 | |
253 | #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
254 | userial_ioctl_init_bt_wake(vnd_userial.fd); |
255 | #endif |
256 | |
257 | ALOGI("device fd = %d open", vnd_userial.fd); |
258 | |
259 | return vnd_userial.fd; |
260 | } |
261 | |
262 | /******************************************************************************* |
263 | ** |
264 | ** Function userial_vendor_close |
265 | ** |
266 | ** Description Conduct vendor-specific close work |
267 | ** |
268 | ** Returns None |
269 | ** |
270 | *******************************************************************************/ |
271 | void userial_vendor_close(void) |
272 | { |
273 | int result; |
274 | |
275 | if (vnd_userial.fd == -1) |
276 | return; |
277 | |
278 | #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
279 | /* de-assert bt_wake BEFORE closing port */ |
280 | ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL); |
281 | #endif |
282 | |
283 | ALOGI("device fd = %d close", vnd_userial.fd); |
284 | |
285 | if ((result = close(vnd_userial.fd)) < 0) |
286 | ALOGE( "close(fd:%d) FAILED result:%d", vnd_userial.fd, result); |
287 | |
288 | vnd_userial.fd = -1; |
289 | } |
290 | |
291 | /******************************************************************************* |
292 | ** |
293 | ** Function userial_vendor_set_baud |
294 | ** |
295 | ** Description Set new baud rate |
296 | ** |
297 | ** Returns None |
298 | ** |
299 | *******************************************************************************/ |
300 | void userial_vendor_set_baud(uint8_t userial_baud) |
301 | { |
302 | uint32_t tcio_baud; |
303 | |
304 | userial_to_tcio_baud(userial_baud, &tcio_baud); |
305 | |
306 | cfsetospeed(&vnd_userial.termios, tcio_baud); |
307 | cfsetispeed(&vnd_userial.termios, tcio_baud); |
308 | tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); |
309 | } |
310 | |
311 | /******************************************************************************* |
312 | ** |
313 | ** Function userial_vendor_ioctl |
314 | ** |
315 | ** Description ioctl inteface |
316 | ** |
317 | ** Returns None |
318 | ** |
319 | *******************************************************************************/ |
320 | void userial_vendor_ioctl(userial_vendor_ioctl_op_t op, void *p_data) |
321 | { |
322 | switch(op) |
323 | { |
324 | #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
325 | case USERIAL_OP_ASSERT_BT_WAKE: |
326 | VNDUSERIALDBG("## userial_vendor_ioctl: Asserting BT_Wake ##"); |
327 | ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL); |
328 | break; |
329 | |
330 | case USERIAL_OP_DEASSERT_BT_WAKE: |
331 | VNDUSERIALDBG("## userial_vendor_ioctl: De-asserting BT_Wake ##"); |
332 | ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL); |
333 | break; |
334 | |
335 | case USERIAL_OP_GET_BT_WAKE_STATE: |
336 | ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_GET_ST, p_data); |
337 | break; |
338 | #endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
339 | |
340 | default: |
341 | break; |
342 | } |
343 | } |
344 | |
345 | /******************************************************************************* |
346 | ** |
347 | ** Function userial_set_port |
348 | ** |
349 | ** Description Configure UART port name |
350 | ** |
351 | ** Returns 0 : Success |
352 | ** Otherwise : Fail |
353 | ** |
354 | *******************************************************************************/ |
355 | int userial_set_port(char *p_conf_name, char *p_conf_value, int param) |
356 | { |
357 | strcpy(vnd_userial.port_name, p_conf_value); |
358 | |
359 | return 0; |
360 | } |
361 | |
362 |