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_DESCRIPTION("Common methods for dibusb-based receivers"); 18 MODULE_LICENSE("GPL"); 19 20 #define deb_info(args...) dprintk(debug,0x01,args) 21 22 /* common stuff used by the different dibusb modules */ 23 int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) 24 { 25 if (adap->priv != NULL) { 26 struct dibusb_state *st = adap->priv; 27 if (st->ops.fifo_ctrl != NULL) 28 if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) { 29 err("error while controlling the fifo of the demod."); 30 return -ENODEV; 31 } 32 } 33 return 0; 34 } 35 EXPORT_SYMBOL(dibusb_streaming_ctrl); 36 37 int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff) 38 { 39 if (adap->priv != NULL) { 40 struct dibusb_state *st = adap->priv; 41 if (st->ops.pid_ctrl != NULL) 42 st->ops.pid_ctrl(adap->fe_adap[0].fe, 43 index, pid, onoff); 44 } 45 return 0; 46 } 47 EXPORT_SYMBOL(dibusb_pid_filter); 48 49 int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff) 50 { 51 if (adap->priv != NULL) { 52 struct dibusb_state *st = adap->priv; 53 if (st->ops.pid_parse != NULL) 54 if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0) 55 err("could not handle pid_parser"); 56 } 57 return 0; 58 } 59 EXPORT_SYMBOL(dibusb_pid_filter_ctrl); 60 61 int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff) 62 { 63 u8 *b; 64 int ret; 65 66 b = kmalloc(3, GFP_KERNEL); 67 if (!b) 68 return -ENOMEM; 69 70 b[0] = DIBUSB_REQ_SET_IOCTL; 71 b[1] = DIBUSB_IOCTL_CMD_POWER_MODE; 72 b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP; 73 74 ret = dvb_usb_generic_write(d, b, 3); 75 76 kfree(b); 77 78 msleep(10); 79 80 return ret; 81 } 82 EXPORT_SYMBOL(dibusb_power_ctrl); 83 84 int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) 85 { 86 int ret; 87 u8 *b; 88 89 b = kmalloc(3, GFP_KERNEL); 90 if (!b) 91 return -ENOMEM; 92 93 if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0) 94 goto ret; 95 96 if (onoff) { 97 b[0] = DIBUSB_REQ_SET_STREAMING_MODE; 98 b[1] = 0x00; 99 ret = dvb_usb_generic_write(adap->dev, b, 2); 100 if (ret < 0) 101 goto ret; 102 } 103 104 b[0] = DIBUSB_REQ_SET_IOCTL; 105 b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM; 106 ret = dvb_usb_generic_write(adap->dev, b, 3); 107 108 ret: 109 kfree(b); 110 return ret; 111 } 112 EXPORT_SYMBOL(dibusb2_0_streaming_ctrl); 113 114 int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff) 115 { 116 u8 *b; 117 int ret; 118 119 if (!onoff) 120 return 0; 121 122 b = kmalloc(3, GFP_KERNEL); 123 if (!b) 124 return -ENOMEM; 125 126 b[0] = DIBUSB_REQ_SET_IOCTL; 127 b[1] = DIBUSB_IOCTL_CMD_POWER_MODE; 128 b[2] = DIBUSB_IOCTL_POWER_WAKEUP; 129 130 ret = dvb_usb_generic_write(d, b, 3); 131 132 kfree(b); 133 134 return ret; 135 } 136 EXPORT_SYMBOL(dibusb2_0_power_ctrl); 137 138 static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr, 139 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) 140 { 141 u8 *sndbuf; 142 int ret, wo, len; 143 144 /* write only ? */ 145 wo = (rbuf == NULL || rlen == 0); 146 147 len = 2 + wlen + (wo ? 0 : 2); 148 149 sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL); 150 if (!sndbuf) 151 return -ENOMEM; 152 153 if (4 + wlen > MAX_XFER_SIZE) { 154 warn("i2c wr: len=%d is too big!\n", wlen); 155 ret = -EOPNOTSUPP; 156 goto ret; 157 } 158 159 sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ; 160 sndbuf[1] = (addr << 1) | (wo ? 0 : 1); 161 162 memcpy(&sndbuf[2], wbuf, wlen); 163 164 if (!wo) { 165 sndbuf[wlen + 2] = (rlen >> 8) & 0xff; 166 sndbuf[wlen + 3] = rlen & 0xff; 167 } 168 169 ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0); 170 171 ret: 172 kfree(sndbuf); 173 return ret; 174 } 175 176 /* 177 * I2C master xfer function 178 */ 179 static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num) 180 { 181 struct dvb_usb_device *d = i2c_get_adapdata(adap); 182 int i; 183 184 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 185 return -EAGAIN; 186 187 for (i = 0; i < num; i++) { 188 /* write/read request */ 189 if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0 190 && (msg[i+1].flags & I2C_M_RD)) { 191 if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len, 192 msg[i+1].buf,msg[i+1].len) < 0) 193 break; 194 i++; 195 } else if ((msg[i].flags & I2C_M_RD) == 0) { 196 if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0) 197 break; 198 } else if (msg[i].addr != 0x50) { 199 /* 0x50 is the address of the eeprom - we need to protect it 200 * from dibusb's bad i2c implementation: reads without 201 * writing the offset before are forbidden */ 202 if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0) 203 break; 204 } 205 } 206 207 mutex_unlock(&d->i2c_mutex); 208 return i; 209 } 210 211 static u32 dibusb_i2c_func(struct i2c_adapter *adapter) 212 { 213 return I2C_FUNC_I2C; 214 } 215 216 struct i2c_algorithm dibusb_i2c_algo = { 217 .master_xfer = dibusb_i2c_xfer, 218 .functionality = dibusb_i2c_func, 219 }; 220 EXPORT_SYMBOL(dibusb_i2c_algo); 221 222 int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val) 223 { 224 u8 *buf; 225 int rc; 226 227 buf = kzalloc(2, GFP_KERNEL); 228 if (!buf) 229 return -ENOMEM; 230 231 buf[0] = offs; 232 233 rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1); 234 *val = buf[1]; 235 kfree(buf); 236 237 return rc; 238 } 239 EXPORT_SYMBOL(dibusb_read_eeprom_byte); 240 241 /* 242 * common remote control stuff 243 */ 244 struct rc_map_table rc_map_dibusb_table[] = { 245 /* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */ 246 { 0x0016, KEY_POWER }, 247 { 0x0010, KEY_MUTE }, 248 { 0x0003, KEY_1 }, 249 { 0x0001, KEY_2 }, 250 { 0x0006, KEY_3 }, 251 { 0x0009, KEY_4 }, 252 { 0x001d, KEY_5 }, 253 { 0x001f, KEY_6 }, 254 { 0x000d, KEY_7 }, 255 { 0x0019, KEY_8 }, 256 { 0x001b, KEY_9 }, 257 { 0x0015, KEY_0 }, 258 { 0x0005, KEY_CHANNELUP }, 259 { 0x0002, KEY_CHANNELDOWN }, 260 { 0x001e, KEY_VOLUMEUP }, 261 { 0x000a, KEY_VOLUMEDOWN }, 262 { 0x0011, KEY_RECORD }, 263 { 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */ 264 { 0x0014, KEY_PLAY }, 265 { 0x001a, KEY_STOP }, 266 { 0x0040, KEY_REWIND }, 267 { 0x0012, KEY_FASTFORWARD }, 268 { 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */ 269 { 0x004c, KEY_PAUSE }, 270 { 0x004d, KEY_SCREEN }, /* Full screen mode. */ 271 { 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */ 272 /* additional keys TwinHan VisionPlus, the Artec seemingly not have */ 273 { 0x000c, KEY_CANCEL }, /* Cancel */ 274 { 0x001c, KEY_EPG }, /* EPG */ 275 { 0x0000, KEY_TAB }, /* Tab */ 276 { 0x0048, KEY_INFO }, /* Preview */ 277 { 0x0004, KEY_LIST }, /* RecordList */ 278 { 0x000f, KEY_TEXT }, /* Teletext */ 279 /* Key codes for the KWorld/ADSTech/JetWay remote. */ 280 { 0x8612, KEY_POWER }, 281 { 0x860f, KEY_SELECT }, /* source */ 282 { 0x860c, KEY_UNKNOWN }, /* scan */ 283 { 0x860b, KEY_EPG }, 284 { 0x8610, KEY_MUTE }, 285 { 0x8601, KEY_1 }, 286 { 0x8602, KEY_2 }, 287 { 0x8603, KEY_3 }, 288 { 0x8604, KEY_4 }, 289 { 0x8605, KEY_5 }, 290 { 0x8606, KEY_6 }, 291 { 0x8607, KEY_7 }, 292 { 0x8608, KEY_8 }, 293 { 0x8609, KEY_9 }, 294 { 0x860a, KEY_0 }, 295 { 0x8618, KEY_ZOOM }, 296 { 0x861c, KEY_UNKNOWN }, /* preview */ 297 { 0x8613, KEY_UNKNOWN }, /* snap */ 298 { 0x8600, KEY_UNDO }, 299 { 0x861d, KEY_RECORD }, 300 { 0x860d, KEY_STOP }, 301 { 0x860e, KEY_PAUSE }, 302 { 0x8616, KEY_PLAY }, 303 { 0x8611, KEY_BACK }, 304 { 0x8619, KEY_FORWARD }, 305 { 0x8614, KEY_UNKNOWN }, /* pip */ 306 { 0x8615, KEY_ESC }, 307 { 0x861a, KEY_UP }, 308 { 0x861e, KEY_DOWN }, 309 { 0x861f, KEY_LEFT }, 310 { 0x861b, KEY_RIGHT }, 311 312 /* Key codes for the DiBcom MOD3000 remote. */ 313 { 0x8000, KEY_MUTE }, 314 { 0x8001, KEY_TEXT }, 315 { 0x8002, KEY_HOME }, 316 { 0x8003, KEY_POWER }, 317 318 { 0x8004, KEY_RED }, 319 { 0x8005, KEY_GREEN }, 320 { 0x8006, KEY_YELLOW }, 321 { 0x8007, KEY_BLUE }, 322 323 { 0x8008, KEY_DVD }, 324 { 0x8009, KEY_AUDIO }, 325 { 0x800a, KEY_IMAGES }, /* Pictures */ 326 { 0x800b, KEY_VIDEO }, 327 328 { 0x800c, KEY_BACK }, 329 { 0x800d, KEY_UP }, 330 { 0x800e, KEY_RADIO }, 331 { 0x800f, KEY_EPG }, 332 333 { 0x8010, KEY_LEFT }, 334 { 0x8011, KEY_OK }, 335 { 0x8012, KEY_RIGHT }, 336 { 0x8013, KEY_UNKNOWN }, /* SAP */ 337 338 { 0x8014, KEY_TV }, 339 { 0x8015, KEY_DOWN }, 340 { 0x8016, KEY_MENU }, /* DVD Menu */ 341 { 0x8017, KEY_LAST }, 342 343 { 0x8018, KEY_RECORD }, 344 { 0x8019, KEY_STOP }, 345 { 0x801a, KEY_PAUSE }, 346 { 0x801b, KEY_PLAY }, 347 348 { 0x801c, KEY_PREVIOUS }, 349 { 0x801d, KEY_REWIND }, 350 { 0x801e, KEY_FASTFORWARD }, 351 { 0x801f, KEY_NEXT}, 352 353 { 0x8040, KEY_1 }, 354 { 0x8041, KEY_2 }, 355 { 0x8042, KEY_3 }, 356 { 0x8043, KEY_CHANNELUP }, 357 358 { 0x8044, KEY_4 }, 359 { 0x8045, KEY_5 }, 360 { 0x8046, KEY_6 }, 361 { 0x8047, KEY_CHANNELDOWN }, 362 363 { 0x8048, KEY_7 }, 364 { 0x8049, KEY_8 }, 365 { 0x804a, KEY_9 }, 366 { 0x804b, KEY_VOLUMEUP }, 367 368 { 0x804c, KEY_CLEAR }, 369 { 0x804d, KEY_0 }, 370 { 0x804e, KEY_ENTER }, 371 { 0x804f, KEY_VOLUMEDOWN }, 372 }; 373 EXPORT_SYMBOL(rc_map_dibusb_table); 374 375 int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state) 376 { 377 u8 *buf; 378 int ret; 379 380 buf = kmalloc(5, GFP_KERNEL); 381 if (!buf) 382 return -ENOMEM; 383 384 buf[0] = DIBUSB_REQ_POLL_REMOTE; 385 386 ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0); 387 if (ret < 0) 388 goto ret; 389 390 dvb_usb_nec_rc_key_to_event(d, buf, event, state); 391 392 if (buf[0] != 0) 393 deb_info("key: %*ph\n", 5, buf); 394 395 ret: 396 kfree(buf); 397 398 return ret; 399 } 400 EXPORT_SYMBOL(dibusb_rc_query); 401