blob: 3ff518b13433e9c9ec167c616f5cc35a17a74138
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 <string.h> |
35 | #include "bt_vendor_brcm.h" |
36 | #include "userial.h" |
37 | #include "userial_vendor.h" |
38 | |
39 | /****************************************************************************** |
40 | ** Constants & Macros |
41 | ******************************************************************************/ |
42 | |
43 | #ifndef VNDUSERIAL_DBG |
44 | #define VNDUSERIAL_DBG FALSE |
45 | #endif |
46 | |
47 | #if (VNDUSERIAL_DBG == TRUE) |
48 | #define VNDUSERIALDBG(param, ...) {ALOGD(param, ## __VA_ARGS__);} |
49 | #else |
50 | #define VNDUSERIALDBG(param, ...) {} |
51 | #endif |
52 | |
53 | #define VND_PORT_NAME_MAXLEN 256 |
54 | |
55 | /****************************************************************************** |
56 | ** Local type definitions |
57 | ******************************************************************************/ |
58 | |
59 | /* vendor serial control block */ |
60 | typedef struct |
61 | { |
62 | int fd; /* fd to Bluetooth device */ |
63 | struct termios termios; /* serial terminal of BT port */ |
64 | char port_name[VND_PORT_NAME_MAXLEN]; |
65 | } vnd_userial_cb_t; |
66 | |
67 | /****************************************************************************** |
68 | ** Static variables |
69 | ******************************************************************************/ |
70 | |
71 | static vnd_userial_cb_t vnd_userial; |
72 | |
73 | /***************************************************************************** |
74 | ** Helper Functions |
75 | *****************************************************************************/ |
76 | |
77 | /******************************************************************************* |
78 | ** |
79 | ** Function userial_to_tcio_baud |
80 | ** |
81 | ** Description helper function converts USERIAL baud rates into TCIO |
82 | ** conforming baud rates |
83 | ** |
84 | ** Returns TRUE/FALSE |
85 | ** |
86 | *******************************************************************************/ |
87 | uint8_t userial_to_tcio_baud(uint8_t cfg_baud, uint32_t *baud) |
88 | { |
89 | if (cfg_baud == USERIAL_BAUD_115200) |
90 | *baud = B115200; |
91 | else if (cfg_baud == USERIAL_BAUD_4M) |
92 | *baud = B4000000; |
93 | else if (cfg_baud == USERIAL_BAUD_3M) |
94 | *baud = B3000000; |
95 | else if (cfg_baud == USERIAL_BAUD_2M) |
96 | *baud = B2000000; |
97 | else if (cfg_baud == USERIAL_BAUD_1M) |
98 | *baud = B1000000; |
99 | else if (cfg_baud == USERIAL_BAUD_921600) |
100 | *baud = B921600; |
101 | else if (cfg_baud == USERIAL_BAUD_460800) |
102 | *baud = B460800; |
103 | else if (cfg_baud == USERIAL_BAUD_230400) |
104 | *baud = B230400; |
105 | else if (cfg_baud == USERIAL_BAUD_57600) |
106 | *baud = B57600; |
107 | else if (cfg_baud == USERIAL_BAUD_19200) |
108 | *baud = B19200; |
109 | else if (cfg_baud == USERIAL_BAUD_9600) |
110 | *baud = B9600; |
111 | else if (cfg_baud == USERIAL_BAUD_1200) |
112 | *baud = B1200; |
113 | else if (cfg_baud == USERIAL_BAUD_600) |
114 | *baud = B600; |
115 | else |
116 | { |
117 | ALOGE( "userial vendor open: unsupported baud idx %i", cfg_baud); |
118 | *baud = B115200; |
119 | return FALSE; |
120 | } |
121 | |
122 | return TRUE; |
123 | } |
124 | |
125 | #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
126 | /******************************************************************************* |
127 | ** |
128 | ** Function userial_ioctl_init_bt_wake |
129 | ** |
130 | ** Description helper function to set the open state of the bt_wake if ioctl |
131 | ** is used. it should not hurt in the rfkill case but it might |
132 | ** be better to compile it out. |
133 | ** |
134 | ** Returns none |
135 | ** |
136 | *******************************************************************************/ |
137 | void userial_ioctl_init_bt_wake(int fd) |
138 | { |
139 | uint32_t bt_wake_state; |
140 | |
141 | #if (BT_WAKE_USERIAL_LDISC==TRUE) |
142 | int ldisc = N_BRCM_HCI; /* brcm sleep mode support line discipline */ |
143 | |
144 | /* attempt to load enable discipline driver */ |
145 | if (ioctl(vnd_userial.fd, TIOCSETD, &ldisc) < 0) |
146 | { |
147 | VNDUSERIALDBG("USERIAL_Open():fd %d, TIOCSETD failed: error %d for ldisc: %d", |
148 | fd, errno, ldisc); |
149 | } |
150 | #endif |
151 | |
152 | |
153 | |
154 | /* assert BT_WAKE through ioctl */ |
155 | ioctl(fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL); |
156 | ioctl(fd, USERIAL_IOCTL_BT_WAKE_GET_ST, &bt_wake_state); |
157 | VNDUSERIALDBG("userial_ioctl_init_bt_wake read back BT_WAKE state=%i", \ |
158 | bt_wake_state); |
159 | } |
160 | #endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
161 | |
162 | |
163 | /***************************************************************************** |
164 | ** Userial Vendor API Functions |
165 | *****************************************************************************/ |
166 | |
167 | /******************************************************************************* |
168 | ** |
169 | ** Function userial_vendor_init |
170 | ** |
171 | ** Description Initialize userial vendor-specific control block |
172 | ** |
173 | ** Returns None |
174 | ** |
175 | *******************************************************************************/ |
176 | void userial_vendor_init(void) |
177 | { |
178 | vnd_userial.fd = -1; |
179 | snprintf(vnd_userial.port_name, VND_PORT_NAME_MAXLEN, "%s", \ |
180 | BLUETOOTH_UART_DEVICE_PORT); |
181 | } |
182 | |
183 | /******************************************************************************* |
184 | ** |
185 | ** Function userial_vendor_open |
186 | ** |
187 | ** Description Open the serial port with the given configuration |
188 | ** |
189 | ** Returns device fd |
190 | ** |
191 | *******************************************************************************/ |
192 | int userial_vendor_open(tUSERIAL_CFG *p_cfg) |
193 | { |
194 | uint32_t baud; |
195 | uint8_t data_bits; |
196 | uint16_t parity; |
197 | uint8_t stop_bits; |
198 | |
199 | vnd_userial.fd = -1; |
200 | |
201 | if (!userial_to_tcio_baud(p_cfg->baud, &baud)) |
202 | { |
203 | return -1; |
204 | } |
205 | |
206 | if(p_cfg->fmt & USERIAL_DATABITS_8) |
207 | data_bits = CS8; |
208 | else if(p_cfg->fmt & USERIAL_DATABITS_7) |
209 | data_bits = CS7; |
210 | else if(p_cfg->fmt & USERIAL_DATABITS_6) |
211 | data_bits = CS6; |
212 | else if(p_cfg->fmt & USERIAL_DATABITS_5) |
213 | data_bits = CS5; |
214 | else |
215 | { |
216 | ALOGE("userial vendor open: unsupported data bits"); |
217 | return -1; |
218 | } |
219 | |
220 | if(p_cfg->fmt & USERIAL_PARITY_NONE) |
221 | parity = 0; |
222 | else if(p_cfg->fmt & USERIAL_PARITY_EVEN) |
223 | parity = PARENB; |
224 | else if(p_cfg->fmt & USERIAL_PARITY_ODD) |
225 | parity = (PARENB | PARODD); |
226 | else |
227 | { |
228 | ALOGE("userial vendor open: unsupported parity bit mode"); |
229 | return -1; |
230 | } |
231 | |
232 | if(p_cfg->fmt & USERIAL_STOPBITS_1) |
233 | stop_bits = 0; |
234 | else if(p_cfg->fmt & USERIAL_STOPBITS_2) |
235 | stop_bits = CSTOPB; |
236 | else |
237 | { |
238 | ALOGE("userial vendor open: unsupported stop bits"); |
239 | return -1; |
240 | } |
241 | |
242 | ALOGI("userial vendor open: opening %s", vnd_userial.port_name); |
243 | |
244 | if ((vnd_userial.fd = open(vnd_userial.port_name, O_RDWR)) == -1) |
245 | { |
246 | ALOGE("userial vendor open: unable to open %s", vnd_userial.port_name); |
247 | return -1; |
248 | } |
249 | |
250 | tcflush(vnd_userial.fd, TCIOFLUSH); |
251 | |
252 | tcgetattr(vnd_userial.fd, &vnd_userial.termios); |
253 | cfmakeraw(&vnd_userial.termios); |
254 | vnd_userial.termios.c_cflag |= (CRTSCTS | stop_bits); |
255 | tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); |
256 | tcflush(vnd_userial.fd, TCIOFLUSH); |
257 | |
258 | tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); |
259 | tcflush(vnd_userial.fd, TCIOFLUSH); |
260 | tcflush(vnd_userial.fd, TCIOFLUSH); |
261 | |
262 | /* set input/output baudrate */ |
263 | cfsetospeed(&vnd_userial.termios, baud); |
264 | cfsetispeed(&vnd_userial.termios, baud); |
265 | tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); |
266 | |
267 | #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
268 | userial_ioctl_init_bt_wake(vnd_userial.fd); |
269 | #endif |
270 | |
271 | ALOGI("device fd = %d open", vnd_userial.fd); |
272 | |
273 | return vnd_userial.fd; |
274 | } |
275 | |
276 | /******************************************************************************* |
277 | ** |
278 | ** Function userial_vendor_close |
279 | ** |
280 | ** Description Conduct vendor-specific close work |
281 | ** |
282 | ** Returns None |
283 | ** |
284 | *******************************************************************************/ |
285 | void userial_vendor_close(void) |
286 | { |
287 | int result; |
288 | |
289 | if (vnd_userial.fd == -1) |
290 | return; |
291 | |
292 | #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
293 | /* de-assert bt_wake BEFORE closing port */ |
294 | ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL); |
295 | #endif |
296 | |
297 | ALOGI("device fd = %d close", vnd_userial.fd); |
298 | // flush Tx before close to make sure no chars in buffer |
299 | tcflush(vnd_userial.fd, TCIOFLUSH); |
300 | if ((result = close(vnd_userial.fd)) < 0) |
301 | ALOGE( "close(fd:%d) FAILED result:%d", vnd_userial.fd, result); |
302 | |
303 | vnd_userial.fd = -1; |
304 | } |
305 | |
306 | /******************************************************************************* |
307 | ** |
308 | ** Function userial_vendor_set_baud |
309 | ** |
310 | ** Description Set new baud rate |
311 | ** |
312 | ** Returns None |
313 | ** |
314 | *******************************************************************************/ |
315 | void userial_vendor_set_baud(uint8_t userial_baud) |
316 | { |
317 | uint32_t tcio_baud; |
318 | |
319 | userial_to_tcio_baud(userial_baud, &tcio_baud); |
320 | |
321 | cfsetospeed(&vnd_userial.termios, tcio_baud); |
322 | cfsetispeed(&vnd_userial.termios, tcio_baud); |
323 | tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); |
324 | } |
325 | |
326 | /******************************************************************************* |
327 | ** |
328 | ** Function userial_vendor_ioctl |
329 | ** |
330 | ** Description ioctl inteface |
331 | ** |
332 | ** Returns None |
333 | ** |
334 | *******************************************************************************/ |
335 | void userial_vendor_ioctl(userial_vendor_ioctl_op_t op, void *p_data) |
336 | { |
337 | switch(op) |
338 | { |
339 | #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
340 | case USERIAL_OP_ASSERT_BT_WAKE: |
341 | VNDUSERIALDBG("## userial_vendor_ioctl: Asserting BT_Wake ##"); |
342 | ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL); |
343 | break; |
344 | |
345 | case USERIAL_OP_DEASSERT_BT_WAKE: |
346 | VNDUSERIALDBG("## userial_vendor_ioctl: De-asserting BT_Wake ##"); |
347 | ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL); |
348 | break; |
349 | |
350 | case USERIAL_OP_GET_BT_WAKE_STATE: |
351 | ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_GET_ST, p_data); |
352 | break; |
353 | #endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) |
354 | |
355 | default: |
356 | break; |
357 | } |
358 | } |
359 | |
360 | /******************************************************************************* |
361 | ** |
362 | ** Function userial_set_port |
363 | ** |
364 | ** Description Configure UART port name |
365 | ** |
366 | ** Returns 0 : Success |
367 | ** Otherwise : Fail |
368 | ** |
369 | *******************************************************************************/ |
370 | int userial_set_port(char *p_conf_name, char *p_conf_value, int param) |
371 | { |
372 | strcpy(vnd_userial.port_name, p_conf_value); |
373 | |
374 | return 0; |
375 | } |
376 | |
377 |