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path: root/src/userial_vendor.c (plain)
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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 */
59typedef 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
70static 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*******************************************************************************/
86uint8_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*******************************************************************************/
136void 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*******************************************************************************/
162void 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*******************************************************************************/
178int 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*******************************************************************************/
271void 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*******************************************************************************/
300void 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*******************************************************************************/
320void 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*******************************************************************************/
355int 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
generated by cgit at 2024-05-19 06:35:31 (GMT)