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 #if (BT_WAKE_USERIAL_LDISC==TRUE) 141 int ldisc = N_BRCM_HCI; /* brcm sleep mode support line discipline */ 142 143 /* attempt to load enable discipline driver */ 144 if (ioctl(vnd_userial.fd, TIOCSETD, &ldisc) < 0) 145 { 146 VNDUSERIALDBG("USERIAL_Open():fd %d, TIOCSETD failed: error %d for ldisc: %d", 147 fd, errno, ldisc); 148 } 149 #endif 150 151 152 153 /* assert BT_WAKE through ioctl */ 154 ioctl(fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL); 155 ioctl(fd, USERIAL_IOCTL_BT_WAKE_GET_ST, &bt_wake_state); 156 VNDUSERIALDBG("userial_ioctl_init_bt_wake read back BT_WAKE state=%i", \ 157 bt_wake_state); 158 } 159 #endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) 160 161 162 /***************************************************************************** 163 ** Userial Vendor API Functions 164 *****************************************************************************/ 165 166 /******************************************************************************* 167 ** 168 ** Function userial_vendor_init 169 ** 170 ** Description Initialize userial vendor-specific control block 171 ** 172 ** Returns None 173 ** 174 *******************************************************************************/ 175 void userial_vendor_init(void) 176 { 177 vnd_userial.fd = -1; 178 snprintf(vnd_userial.port_name, VND_PORT_NAME_MAXLEN, "%s", \ 179 BLUETOOTH_UART_DEVICE_PORT); 180 } 181 182 /******************************************************************************* 183 ** 184 ** Function userial_vendor_open 185 ** 186 ** Description Open the serial port with the given configuration 187 ** 188 ** Returns device fd 189 ** 190 *******************************************************************************/ 191 int userial_vendor_open(tUSERIAL_CFG *p_cfg) 192 { 193 uint32_t baud; 194 uint8_t data_bits; 195 uint16_t parity; 196 uint8_t stop_bits; 197 198 vnd_userial.fd = -1; 199 200 if (!userial_to_tcio_baud(p_cfg->baud, &baud)) 201 { 202 return -1; 203 } 204 205 if(p_cfg->fmt & USERIAL_DATABITS_8) 206 data_bits = CS8; 207 else if(p_cfg->fmt & USERIAL_DATABITS_7) 208 data_bits = CS7; 209 else if(p_cfg->fmt & USERIAL_DATABITS_6) 210 data_bits = CS6; 211 else if(p_cfg->fmt & USERIAL_DATABITS_5) 212 data_bits = CS5; 213 else 214 { 215 ALOGE("userial vendor open: unsupported data bits"); 216 return -1; 217 } 218 219 if(p_cfg->fmt & USERIAL_PARITY_NONE) 220 parity = 0; 221 else if(p_cfg->fmt & USERIAL_PARITY_EVEN) 222 parity = PARENB; 223 else if(p_cfg->fmt & USERIAL_PARITY_ODD) 224 parity = (PARENB | PARODD); 225 else 226 { 227 ALOGE("userial vendor open: unsupported parity bit mode"); 228 return -1; 229 } 230 231 if(p_cfg->fmt & USERIAL_STOPBITS_1) 232 stop_bits = 0; 233 else if(p_cfg->fmt & USERIAL_STOPBITS_2) 234 stop_bits = CSTOPB; 235 else 236 { 237 ALOGE("userial vendor open: unsupported stop bits"); 238 return -1; 239 } 240 241 ALOGI("userial vendor open: opening %s", vnd_userial.port_name); 242 243 if ((vnd_userial.fd = open(vnd_userial.port_name, O_RDWR)) == -1) 244 { 245 ALOGE("userial vendor open: unable to open %s", vnd_userial.port_name); 246 return -1; 247 } 248 249 tcflush(vnd_userial.fd, TCIOFLUSH); 250 251 tcgetattr(vnd_userial.fd, &vnd_userial.termios); 252 cfmakeraw(&vnd_userial.termios); 253 vnd_userial.termios.c_cflag |= (CRTSCTS | stop_bits); 254 tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); 255 tcflush(vnd_userial.fd, TCIOFLUSH); 256 257 tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); 258 tcflush(vnd_userial.fd, TCIOFLUSH); 259 tcflush(vnd_userial.fd, TCIOFLUSH); 260 261 /* set input/output baudrate */ 262 cfsetospeed(&vnd_userial.termios, baud); 263 cfsetispeed(&vnd_userial.termios, baud); 264 tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); 265 266 #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) 267 userial_ioctl_init_bt_wake(vnd_userial.fd); 268 #endif 269 270 ALOGI("device fd = %d open", vnd_userial.fd); 271 272 return vnd_userial.fd; 273 } 274 275 /******************************************************************************* 276 ** 277 ** Function userial_vendor_close 278 ** 279 ** Description Conduct vendor-specific close work 280 ** 281 ** Returns None 282 ** 283 *******************************************************************************/ 284 void userial_vendor_close(void) 285 { 286 int result; 287 288 if (vnd_userial.fd == -1) 289 return; 290 291 #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) 292 /* de-assert bt_wake BEFORE closing port */ 293 ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL); 294 #endif 295 296 ALOGI("device fd = %d close", vnd_userial.fd); 297 // flush Tx before close to make sure no chars in buffer 298 tcflush(vnd_userial.fd, TCIOFLUSH); 299 if ((result = close(vnd_userial.fd)) < 0) 300 ALOGE( "close(fd:%d) FAILED result:%d", vnd_userial.fd, result); 301 302 vnd_userial.fd = -1; 303 } 304 305 /******************************************************************************* 306 ** 307 ** Function userial_vendor_set_baud 308 ** 309 ** Description Set new baud rate 310 ** 311 ** Returns None 312 ** 313 *******************************************************************************/ 314 void userial_vendor_set_baud(uint8_t userial_baud) 315 { 316 uint32_t tcio_baud; 317 318 userial_to_tcio_baud(userial_baud, &tcio_baud); 319 320 cfsetospeed(&vnd_userial.termios, tcio_baud); 321 cfsetispeed(&vnd_userial.termios, tcio_baud); 322 tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); 323 } 324 325 /******************************************************************************* 326 ** 327 ** Function userial_vendor_ioctl 328 ** 329 ** Description ioctl inteface 330 ** 331 ** Returns None 332 ** 333 *******************************************************************************/ 334 void userial_vendor_ioctl(userial_vendor_ioctl_op_t op, void *p_data) 335 { 336 switch(op) 337 { 338 #if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) 339 case USERIAL_OP_ASSERT_BT_WAKE: 340 VNDUSERIALDBG("## userial_vendor_ioctl: Asserting BT_Wake ##"); 341 ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL); 342 break; 343 344 case USERIAL_OP_DEASSERT_BT_WAKE: 345 VNDUSERIALDBG("## userial_vendor_ioctl: De-asserting BT_Wake ##"); 346 ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL); 347 break; 348 349 case USERIAL_OP_GET_BT_WAKE_STATE: 350 ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_GET_ST, p_data); 351 break; 352 #endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) 353 354 default: 355 break; 356 } 357 } 358 359 /******************************************************************************* 360 ** 361 ** Function userial_set_port 362 ** 363 ** Description Configure UART port name 364 ** 365 ** Returns 0 : Success 366 ** Otherwise : Fail 367 ** 368 *******************************************************************************/ 369 int userial_set_port(char *p_conf_name, char *p_conf_value, int param) 370 { 371 strcpy(vnd_userial.port_name, p_conf_value); 372 373 return 0; 374 } 375 376
