1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Common methods for dibusb-based-receivers. 3 * 4 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de) 5 * 6 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information 7 */ 8 9 #include "dibusb.h" 10 11 /* Max transfer size done by I2C transfer functions */ 12 #define MAX_XFER_SIZE 64 13 14 static int debug; 15 module_param(debug, int, 0644); 16 MODULE_PARM_DESC(debug, "set debugging level (1=info (|-able))." DVB_USB_DEBUG_STATUS); 17 MODULE_LICENSE("GPL"); 18 19 #define deb_info(args...) dprintk(debug,0x01,args) 20 21 /* common stuff used by the different dibusb modules */ 22 int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) 23 { 24 if (adap->priv != NULL) { 25 struct dibusb_state *st = adap->priv; 26 if (st->ops.fifo_ctrl != NULL) 27 if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) { 28 err("error while controlling the fifo of the demod."); 29 return -ENODEV; 30 } 31 } 32 return 0; 33 } 34 EXPORT_SYMBOL(dibusb_streaming_ctrl); 35 36 int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff) 37 { 38 if (adap->priv != NULL) { 39 struct dibusb_state *st = adap->priv; 40 if (st->ops.pid_ctrl != NULL) 41 st->ops.pid_ctrl(adap->fe_adap[0].fe, 42 index, pid, onoff); 43 } 44 return 0; 45 } 46 EXPORT_SYMBOL(dibusb_pid_filter); 47 48 int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff) 49 { 50 if (adap->priv != NULL) { 51 struct dibusb_state *st = adap->priv; 52 if (st->ops.pid_parse != NULL) 53 if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0) 54 err("could not handle pid_parser"); 55 } 56 return 0; 57 } 58 EXPORT_SYMBOL(dibusb_pid_filter_ctrl); 59 60 int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff) 61 { 62 u8 *b; 63 int ret; 64 65 b = kmalloc(3, GFP_KERNEL); 66 if (!b) 67 return -ENOMEM; 68 69 b[0] = DIBUSB_REQ_SET_IOCTL; 70 b[1] = DIBUSB_IOCTL_CMD_POWER_MODE; 71 b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP; 72 73 ret = dvb_usb_generic_write(d, b, 3); 74 75 kfree(b); 76 77 msleep(10); 78 79 return ret; 80 } 81 EXPORT_SYMBOL(dibusb_power_ctrl); 82 83 int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) 84 { 85 int ret; 86 u8 *b; 87 88 b = kmalloc(3, GFP_KERNEL); 89 if (!b) 90 return -ENOMEM; 91 92 if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0) 93 goto ret; 94 95 if (onoff) { 96 b[0] = DIBUSB_REQ_SET_STREAMING_MODE; 97 b[1] = 0x00; 98 ret = dvb_usb_generic_write(adap->dev, b, 2); 99 if (ret < 0) 100 goto ret; 101 } 102 103 b[0] = DIBUSB_REQ_SET_IOCTL; 104 b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM; 105 ret = dvb_usb_generic_write(adap->dev, b, 3); 106 107 ret: 108 kfree(b); 109 return ret; 110 } 111 EXPORT_SYMBOL(dibusb2_0_streaming_ctrl); 112 113 int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff) 114 { 115 u8 *b; 116 int ret; 117 118 if (!onoff) 119 return 0; 120 121 b = kmalloc(3, GFP_KERNEL); 122 if (!b) 123 return -ENOMEM; 124 125 b[0] = DIBUSB_REQ_SET_IOCTL; 126 b[1] = DIBUSB_IOCTL_CMD_POWER_MODE; 127 b[2] = DIBUSB_IOCTL_POWER_WAKEUP; 128 129 ret = dvb_usb_generic_write(d, b, 3); 130 131 kfree(b); 132 133 return ret; 134 } 135 EXPORT_SYMBOL(dibusb2_0_power_ctrl); 136 137 static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr, 138 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) 139 { 140 u8 *sndbuf; 141 int ret, wo, len; 142 143 /* write only ? */ 144 wo = (rbuf == NULL || rlen == 0); 145 146 len = 2 + wlen + (wo ? 0 : 2); 147 148 sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL); 149 if (!sndbuf) 150 return -ENOMEM; 151 152 if (4 + wlen > MAX_XFER_SIZE) { 153 warn("i2c wr: len=%d is too big!\n", wlen); 154 ret = -EOPNOTSUPP; 155 goto ret; 156 } 157 158 sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ; 159 sndbuf[1] = (addr << 1) | (wo ? 0 : 1); 160 161 memcpy(&sndbuf[2], wbuf, wlen); 162 163 if (!wo) { 164 sndbuf[wlen + 2] = (rlen >> 8) & 0xff; 165 sndbuf[wlen + 3] = rlen & 0xff; 166 } 167 168 ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0); 169 170 ret: 171 kfree(sndbuf); 172 return ret; 173 } 174 175 /* 176 * I2C master xfer function 177 */ 178 static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num) 179 { 180 struct dvb_usb_device *d = i2c_get_adapdata(adap); 181 int i; 182 183 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 184 return -EAGAIN; 185 186 for (i = 0; i < num; i++) { 187 /* write/read request */ 188 if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0 189 && (msg[i+1].flags & I2C_M_RD)) { 190 if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len, 191 msg[i+1].buf,msg[i+1].len) < 0) 192 break; 193 i++; 194 } else if ((msg[i].flags & I2C_M_RD) == 0) { 195 if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0) 196 break; 197 } else if (msg[i].addr != 0x50) { 198 /* 0x50 is the address of the eeprom - we need to protect it 199 * from dibusb's bad i2c implementation: reads without 200 * writing the offset before are forbidden */ 201 if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0) 202 break; 203 } 204 } 205 206 mutex_unlock(&d->i2c_mutex); 207 return i; 208 } 209 210 static u32 dibusb_i2c_func(struct i2c_adapter *adapter) 211 { 212 return I2C_FUNC_I2C; 213 } 214 215 struct i2c_algorithm dibusb_i2c_algo = { 216 .master_xfer = dibusb_i2c_xfer, 217 .functionality = dibusb_i2c_func, 218 }; 219 EXPORT_SYMBOL(dibusb_i2c_algo); 220 221 int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val) 222 { 223 u8 *buf; 224 int rc; 225 226 buf = kzalloc(2, GFP_KERNEL); 227 if (!buf) 228 return -ENOMEM; 229 230 buf[0] = offs; 231 232 rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1); 233 *val = buf[1]; 234 kfree(buf); 235 236 return rc; 237 } 238 EXPORT_SYMBOL(dibusb_read_eeprom_byte); 239 240 /* 241 * common remote control stuff 242 */ 243 struct rc_map_table rc_map_dibusb_table[] = { 244 /* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */ 245 { 0x0016, KEY_POWER }, 246 { 0x0010, KEY_MUTE }, 247 { 0x0003, KEY_1 }, 248 { 0x0001, KEY_2 }, 249 { 0x0006, KEY_3 }, 250 { 0x0009, KEY_4 }, 251 { 0x001d, KEY_5 }, 252 { 0x001f, KEY_6 }, 253 { 0x000d, KEY_7 }, 254 { 0x0019, KEY_8 }, 255 { 0x001b, KEY_9 }, 256 { 0x0015, KEY_0 }, 257 { 0x0005, KEY_CHANNELUP }, 258 { 0x0002, KEY_CHANNELDOWN }, 259 { 0x001e, KEY_VOLUMEUP }, 260 { 0x000a, KEY_VOLUMEDOWN }, 261 { 0x0011, KEY_RECORD }, 262 { 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */ 263 { 0x0014, KEY_PLAY }, 264 { 0x001a, KEY_STOP }, 265 { 0x0040, KEY_REWIND }, 266 { 0x0012, KEY_FASTFORWARD }, 267 { 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */ 268 { 0x004c, KEY_PAUSE }, 269 { 0x004d, KEY_SCREEN }, /* Full screen mode. */ 270 { 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */ 271 /* additional keys TwinHan VisionPlus, the Artec seemingly not have */ 272 { 0x000c, KEY_CANCEL }, /* Cancel */ 273 { 0x001c, KEY_EPG }, /* EPG */ 274 { 0x0000, KEY_TAB }, /* Tab */ 275 { 0x0048, KEY_INFO }, /* Preview */ 276 { 0x0004, KEY_LIST }, /* RecordList */ 277 { 0x000f, KEY_TEXT }, /* Teletext */ 278 /* Key codes for the KWorld/ADSTech/JetWay remote. */ 279 { 0x8612, KEY_POWER }, 280 { 0x860f, KEY_SELECT }, /* source */ 281 { 0x860c, KEY_UNKNOWN }, /* scan */ 282 { 0x860b, KEY_EPG }, 283 { 0x8610, KEY_MUTE }, 284 { 0x8601, KEY_1 }, 285 { 0x8602, KEY_2 }, 286 { 0x8603, KEY_3 }, 287 { 0x8604, KEY_4 }, 288 { 0x8605, KEY_5 }, 289 { 0x8606, KEY_6 }, 290 { 0x8607, KEY_7 }, 291 { 0x8608, KEY_8 }, 292 { 0x8609, KEY_9 }, 293 { 0x860a, KEY_0 }, 294 { 0x8618, KEY_ZOOM }, 295 { 0x861c, KEY_UNKNOWN }, /* preview */ 296 { 0x8613, KEY_UNKNOWN }, /* snap */ 297 { 0x8600, KEY_UNDO }, 298 { 0x861d, KEY_RECORD }, 299 { 0x860d, KEY_STOP }, 300 { 0x860e, KEY_PAUSE }, 301 { 0x8616, KEY_PLAY }, 302 { 0x8611, KEY_BACK }, 303 { 0x8619, KEY_FORWARD }, 304 { 0x8614, KEY_UNKNOWN }, /* pip */ 305 { 0x8615, KEY_ESC }, 306 { 0x861a, KEY_UP }, 307 { 0x861e, KEY_DOWN }, 308 { 0x861f, KEY_LEFT }, 309 { 0x861b, KEY_RIGHT }, 310 311 /* Key codes for the DiBcom MOD3000 remote. */ 312 { 0x8000, KEY_MUTE }, 313 { 0x8001, KEY_TEXT }, 314 { 0x8002, KEY_HOME }, 315 { 0x8003, KEY_POWER }, 316 317 { 0x8004, KEY_RED }, 318 { 0x8005, KEY_GREEN }, 319 { 0x8006, KEY_YELLOW }, 320 { 0x8007, KEY_BLUE }, 321 322 { 0x8008, KEY_DVD }, 323 { 0x8009, KEY_AUDIO }, 324 { 0x800a, KEY_IMAGES }, /* Pictures */ 325 { 0x800b, KEY_VIDEO }, 326 327 { 0x800c, KEY_BACK }, 328 { 0x800d, KEY_UP }, 329 { 0x800e, KEY_RADIO }, 330 { 0x800f, KEY_EPG }, 331 332 { 0x8010, KEY_LEFT }, 333 { 0x8011, KEY_OK }, 334 { 0x8012, KEY_RIGHT }, 335 { 0x8013, KEY_UNKNOWN }, /* SAP */ 336 337 { 0x8014, KEY_TV }, 338 { 0x8015, KEY_DOWN }, 339 { 0x8016, KEY_MENU }, /* DVD Menu */ 340 { 0x8017, KEY_LAST }, 341 342 { 0x8018, KEY_RECORD }, 343 { 0x8019, KEY_STOP }, 344 { 0x801a, KEY_PAUSE }, 345 { 0x801b, KEY_PLAY }, 346 347 { 0x801c, KEY_PREVIOUS }, 348 { 0x801d, KEY_REWIND }, 349 { 0x801e, KEY_FASTFORWARD }, 350 { 0x801f, KEY_NEXT}, 351 352 { 0x8040, KEY_1 }, 353 { 0x8041, KEY_2 }, 354 { 0x8042, KEY_3 }, 355 { 0x8043, KEY_CHANNELUP }, 356 357 { 0x8044, KEY_4 }, 358 { 0x8045, KEY_5 }, 359 { 0x8046, KEY_6 }, 360 { 0x8047, KEY_CHANNELDOWN }, 361 362 { 0x8048, KEY_7 }, 363 { 0x8049, KEY_8 }, 364 { 0x804a, KEY_9 }, 365 { 0x804b, KEY_VOLUMEUP }, 366 367 { 0x804c, KEY_CLEAR }, 368 { 0x804d, KEY_0 }, 369 { 0x804e, KEY_ENTER }, 370 { 0x804f, KEY_VOLUMEDOWN }, 371 }; 372 EXPORT_SYMBOL(rc_map_dibusb_table); 373 374 int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state) 375 { 376 u8 *buf; 377 int ret; 378 379 buf = kmalloc(5, GFP_KERNEL); 380 if (!buf) 381 return -ENOMEM; 382 383 buf[0] = DIBUSB_REQ_POLL_REMOTE; 384 385 ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0); 386 if (ret < 0) 387 goto ret; 388 389 dvb_usb_nec_rc_key_to_event(d, buf, event, state); 390 391 if (buf[0] != 0) 392 deb_info("key: %*ph\n", 5, buf); 393 394 ret: 395 kfree(buf); 396 397 return ret; 398 } 399 EXPORT_SYMBOL(dibusb_rc_query); 400