1 // SPDX-License-Identifier: GPL-2.0-only 2 /* DVB USB compliant linux driver for GL861 USB2.0 devices. 3 * 4 * see Documentation/media/dvb-drivers/dvb-usb.rst for more information 5 */ 6 #include <linux/string.h> 7 8 #include "gl861.h" 9 10 #include "zl10353.h" 11 #include "qt1010.h" 12 #include "tc90522.h" 13 #include "dvb-pll.h" 14 15 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 16 17 static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr, 18 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) 19 { 20 u16 index; 21 u16 value = addr << (8 + 1); 22 int wo = (rbuf == NULL || rlen == 0); /* write-only */ 23 u8 req, type; 24 u8 *buf; 25 int ret; 26 27 if (wo) { 28 req = GL861_REQ_I2C_WRITE; 29 type = GL861_WRITE; 30 buf = kmemdup(wbuf, wlen, GFP_KERNEL); 31 } else { /* rw */ 32 req = GL861_REQ_I2C_READ; 33 type = GL861_READ; 34 buf = kmalloc(rlen, GFP_KERNEL); 35 } 36 if (!buf) 37 return -ENOMEM; 38 39 switch (wlen) { 40 case 1: 41 index = wbuf[0]; 42 break; 43 case 2: 44 index = wbuf[0]; 45 value = value + wbuf[1]; 46 break; 47 default: 48 dev_err(&d->udev->dev, "%s: wlen=%d, aborting\n", 49 KBUILD_MODNAME, wlen); 50 kfree(buf); 51 return -EINVAL; 52 } 53 54 usleep_range(1000, 2000); /* avoid I2C errors */ 55 56 ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type, 57 value, index, buf, rlen, 2000); 58 59 if (!wo && ret > 0) 60 memcpy(rbuf, buf, rlen); 61 62 kfree(buf); 63 return ret; 64 } 65 66 /* I2C */ 67 static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], 68 int num) 69 { 70 struct dvb_usb_device *d = i2c_get_adapdata(adap); 71 int i; 72 73 if (num > 2) 74 return -EINVAL; 75 76 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 77 return -EAGAIN; 78 79 for (i = 0; i < num; i++) { 80 /* write/read request */ 81 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { 82 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf, 83 msg[i].len, msg[i+1].buf, msg[i+1].len) < 0) 84 break; 85 i++; 86 } else 87 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf, 88 msg[i].len, NULL, 0) < 0) 89 break; 90 } 91 92 mutex_unlock(&d->i2c_mutex); 93 return i; 94 } 95 96 static u32 gl861_i2c_func(struct i2c_adapter *adapter) 97 { 98 return I2C_FUNC_I2C; 99 } 100 101 static struct i2c_algorithm gl861_i2c_algo = { 102 .master_xfer = gl861_i2c_xfer, 103 .functionality = gl861_i2c_func, 104 }; 105 106 /* Callbacks for DVB USB */ 107 static struct zl10353_config gl861_zl10353_config = { 108 .demod_address = 0x0f, 109 .no_tuner = 1, 110 .parallel_ts = 1, 111 }; 112 113 static int gl861_frontend_attach(struct dvb_usb_adapter *adap) 114 { 115 116 adap->fe[0] = dvb_attach(zl10353_attach, &gl861_zl10353_config, 117 &adap_to_d(adap)->i2c_adap); 118 if (adap->fe[0] == NULL) 119 return -EIO; 120 121 return 0; 122 } 123 124 static struct qt1010_config gl861_qt1010_config = { 125 .i2c_address = 0x62 126 }; 127 128 static int gl861_tuner_attach(struct dvb_usb_adapter *adap) 129 { 130 return dvb_attach(qt1010_attach, 131 adap->fe[0], &adap_to_d(adap)->i2c_adap, 132 &gl861_qt1010_config) == NULL ? -ENODEV : 0; 133 } 134 135 static int gl861_init(struct dvb_usb_device *d) 136 { 137 /* 138 * There is 2 interfaces. Interface 0 is for TV and interface 1 is 139 * for HID remote controller. Interface 0 has 2 alternate settings. 140 * For some reason we need to set interface explicitly, defaulted 141 * as alternate setting 1? 142 */ 143 return usb_set_interface(d->udev, 0, 0); 144 } 145 146 /* DVB USB Driver stuff */ 147 static struct dvb_usb_device_properties gl861_props = { 148 .driver_name = KBUILD_MODNAME, 149 .owner = THIS_MODULE, 150 .adapter_nr = adapter_nr, 151 152 .i2c_algo = &gl861_i2c_algo, 153 .frontend_attach = gl861_frontend_attach, 154 .tuner_attach = gl861_tuner_attach, 155 .init = gl861_init, 156 157 .num_adapters = 1, 158 .adapter = { 159 { 160 .stream = DVB_USB_STREAM_BULK(0x81, 7, 512), 161 } 162 } 163 }; 164 165 166 /* 167 * For Friio 168 */ 169 170 struct friio_priv { 171 struct i2c_adapter *demod_sub_i2c; 172 struct i2c_client *i2c_client_demod; 173 struct i2c_client *i2c_client_tuner; 174 struct i2c_adapter tuner_adap; 175 }; 176 177 struct friio_config { 178 struct i2c_board_info demod_info; 179 struct tc90522_config demod_cfg; 180 181 struct i2c_board_info tuner_info; 182 struct dvb_pll_config tuner_cfg; 183 }; 184 185 static const struct friio_config friio_config = { 186 .demod_info = { I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x18), }, 187 .tuner_info = { I2C_BOARD_INFO("tua6034_friio", 0x60), }, 188 }; 189 190 /* For another type of I2C: 191 * message sent by a USB control-read/write transaction with data stage. 192 * Used in init/config of Friio. 193 */ 194 static int 195 gl861_i2c_write_ex(struct dvb_usb_device *d, u8 addr, u8 *wbuf, u16 wlen) 196 { 197 u8 *buf; 198 int ret; 199 200 buf = kmemdup(wbuf, wlen, GFP_KERNEL); 201 if (!buf) 202 return -ENOMEM; 203 204 ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0), 205 GL861_REQ_I2C_RAW, GL861_WRITE, 206 addr << (8 + 1), 0x0100, buf, wlen, 2000); 207 kfree(buf); 208 return ret; 209 } 210 211 static int 212 gl861_i2c_read_ex(struct dvb_usb_device *d, u8 addr, u8 *rbuf, u16 rlen) 213 { 214 u8 *buf; 215 int ret; 216 217 buf = kmalloc(rlen, GFP_KERNEL); 218 if (!buf) 219 return -ENOMEM; 220 221 ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), 222 GL861_REQ_I2C_READ, GL861_READ, 223 addr << (8 + 1), 0x0100, buf, rlen, 2000); 224 if (ret > 0 && rlen > 0) 225 memcpy(buf, rbuf, rlen); 226 kfree(buf); 227 return ret; 228 } 229 230 /* For I2C transactions to the tuner of Friio (dvb_pll). 231 * 232 * Friio uses irregular USB encapsulation for tuner i2c transactions: 233 * write transacions are encapsulated with a different USB 'request' value. 234 * 235 * Although all transactions are sent via the demod(tc90522) 236 * and the demod provides an i2c adapter for them, it cannot be used in Friio 237 * since it assumes using the same parent adapter with the demod, 238 * which does not use the request value and uses same one for both read/write. 239 * So we define a dedicated i2c adapter here. 240 */ 241 242 static int 243 friio_i2c_tuner_read(struct dvb_usb_device *d, struct i2c_msg *msg) 244 { 245 struct friio_priv *priv; 246 u8 addr; 247 248 priv = d_to_priv(d); 249 addr = priv->i2c_client_demod->addr; 250 return gl861_i2c_read_ex(d, addr, msg->buf, msg->len); 251 } 252 253 static int 254 friio_i2c_tuner_write(struct dvb_usb_device *d, struct i2c_msg *msg) 255 { 256 u8 *buf; 257 int ret; 258 struct friio_priv *priv; 259 260 priv = d_to_priv(d); 261 262 if (msg->len < 1) 263 return -EINVAL; 264 265 buf = kmalloc(msg->len + 1, GFP_KERNEL); 266 if (!buf) 267 return -ENOMEM; 268 buf[0] = msg->addr << 1; 269 memcpy(buf + 1, msg->buf, msg->len); 270 271 ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0), 272 GL861_REQ_I2C_RAW, GL861_WRITE, 273 priv->i2c_client_demod->addr << (8 + 1), 274 0xFE, buf, msg->len + 1, 2000); 275 kfree(buf); 276 return ret; 277 } 278 279 static int friio_tuner_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], 280 int num) 281 { 282 struct dvb_usb_device *d = i2c_get_adapdata(adap); 283 int i; 284 285 if (num > 2) 286 return -EINVAL; 287 288 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 289 return -EAGAIN; 290 291 for (i = 0; i < num; i++) { 292 int ret; 293 294 if (msg[i].flags & I2C_M_RD) 295 ret = friio_i2c_tuner_read(d, &msg[i]); 296 else 297 ret = friio_i2c_tuner_write(d, &msg[i]); 298 299 if (ret < 0) 300 break; 301 302 usleep_range(1000, 2000); /* avoid I2C errors */ 303 } 304 305 mutex_unlock(&d->i2c_mutex); 306 return i; 307 } 308 309 static struct i2c_algorithm friio_tuner_i2c_algo = { 310 .master_xfer = friio_tuner_i2c_xfer, 311 .functionality = gl861_i2c_func, 312 }; 313 314 /* GPIO control in Friio */ 315 316 #define FRIIO_CTL_LNB (1 << 0) 317 #define FRIIO_CTL_STROBE (1 << 1) 318 #define FRIIO_CTL_CLK (1 << 2) 319 #define FRIIO_CTL_LED (1 << 3) 320 321 #define FRIIO_LED_RUNNING 0x6400ff64 322 #define FRIIO_LED_STOPPED 0x96ff00ff 323 324 /* control PIC16F676 attached to Friio */ 325 static int friio_ext_ctl(struct dvb_usb_device *d, 326 u32 sat_color, int power_on) 327 { 328 int i, ret; 329 struct i2c_msg msg; 330 u8 *buf; 331 u32 mask; 332 u8 power = (power_on) ? FRIIO_CTL_LNB : 0; 333 334 buf = kmalloc(2, GFP_KERNEL); 335 if (!buf) 336 return -ENOMEM; 337 338 msg.addr = 0x00; 339 msg.flags = 0; 340 msg.len = 2; 341 msg.buf = buf; 342 buf[0] = 0x00; 343 344 /* send 2bit header (&B10) */ 345 buf[1] = power | FRIIO_CTL_LED | FRIIO_CTL_STROBE; 346 ret = i2c_transfer(&d->i2c_adap, &msg, 1); 347 buf[1] |= FRIIO_CTL_CLK; 348 ret += i2c_transfer(&d->i2c_adap, &msg, 1); 349 350 buf[1] = power | FRIIO_CTL_STROBE; 351 ret += i2c_transfer(&d->i2c_adap, &msg, 1); 352 buf[1] |= FRIIO_CTL_CLK; 353 ret += i2c_transfer(&d->i2c_adap, &msg, 1); 354 355 /* send 32bit(satur, R, G, B) data in serial */ 356 mask = 1 << 31; 357 for (i = 0; i < 32; i++) { 358 buf[1] = power | FRIIO_CTL_STROBE; 359 if (sat_color & mask) 360 buf[1] |= FRIIO_CTL_LED; 361 ret += i2c_transfer(&d->i2c_adap, &msg, 1); 362 buf[1] |= FRIIO_CTL_CLK; 363 ret += i2c_transfer(&d->i2c_adap, &msg, 1); 364 mask >>= 1; 365 } 366 367 /* set the strobe off */ 368 buf[1] = power; 369 ret += i2c_transfer(&d->i2c_adap, &msg, 1); 370 buf[1] |= FRIIO_CTL_CLK; 371 ret += i2c_transfer(&d->i2c_adap, &msg, 1); 372 373 kfree(buf); 374 return (ret == 70) ? 0 : -EREMOTEIO; 375 } 376 377 /* init/config of gl861 for Friio */ 378 /* NOTE: 379 * This function cannot be moved to friio_init()/dvb_usbv2_init(), 380 * because the init defined here must be done before any activities like I2C, 381 * but friio_init() is called by dvb-usbv2 after {_frontend, _tuner}_attach(), 382 * where I2C communication is used. 383 * Thus this function is set to be called from _power_ctl(). 384 * 385 * Since it will be called on the early init stage 386 * where the i2c adapter is not initialized yet, 387 * we cannot use i2c_transfer() here. 388 */ 389 static int friio_reset(struct dvb_usb_device *d) 390 { 391 int i, ret; 392 u8 wbuf[2], rbuf[2]; 393 394 static const u8 friio_init_cmds[][2] = { 395 {0x33, 0x08}, {0x37, 0x40}, {0x3a, 0x1f}, {0x3b, 0xff}, 396 {0x3c, 0x1f}, {0x3d, 0xff}, {0x38, 0x00}, {0x35, 0x00}, 397 {0x39, 0x00}, {0x36, 0x00}, 398 }; 399 400 ret = usb_set_interface(d->udev, 0, 0); 401 if (ret < 0) 402 return ret; 403 404 wbuf[0] = 0x11; 405 wbuf[1] = 0x02; 406 ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0); 407 if (ret < 0) 408 return ret; 409 usleep_range(2000, 3000); 410 411 wbuf[0] = 0x11; 412 wbuf[1] = 0x00; 413 ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0); 414 if (ret < 0) 415 return ret; 416 417 /* 418 * Check if the dev is really a Friio White, since it might be 419 * another device, Friio Black, with the same VID/PID. 420 */ 421 422 usleep_range(1000, 2000); 423 wbuf[0] = 0x03; 424 wbuf[1] = 0x80; 425 ret = gl861_i2c_write_ex(d, 0x09, wbuf, 2); 426 if (ret < 0) 427 return ret; 428 429 usleep_range(2000, 3000); 430 ret = gl861_i2c_read_ex(d, 0x09, rbuf, 2); 431 if (ret < 0) 432 return ret; 433 if (rbuf[0] != 0xff || rbuf[1] != 0xff) 434 return -ENODEV; 435 436 437 usleep_range(1000, 2000); 438 ret = gl861_i2c_write_ex(d, 0x48, wbuf, 2); 439 if (ret < 0) 440 return ret; 441 442 usleep_range(2000, 3000); 443 ret = gl861_i2c_read_ex(d, 0x48, rbuf, 2); 444 if (ret < 0) 445 return ret; 446 if (rbuf[0] != 0xff || rbuf[1] != 0xff) 447 return -ENODEV; 448 449 wbuf[0] = 0x30; 450 wbuf[1] = 0x04; 451 ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0); 452 if (ret < 0) 453 return ret; 454 455 wbuf[0] = 0x00; 456 wbuf[1] = 0x01; 457 ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0); 458 if (ret < 0) 459 return ret; 460 461 wbuf[0] = 0x06; 462 wbuf[1] = 0x0f; 463 ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0); 464 if (ret < 0) 465 return ret; 466 467 for (i = 0; i < ARRAY_SIZE(friio_init_cmds); i++) { 468 ret = gl861_i2c_msg(d, 0x00, (u8 *)friio_init_cmds[i], 2, 469 NULL, 0); 470 if (ret < 0) 471 return ret; 472 } 473 return 0; 474 } 475 476 /* 477 * DVB callbacks for Friio 478 */ 479 480 static int friio_power_ctrl(struct dvb_usb_device *d, int onoff) 481 { 482 return onoff ? friio_reset(d) : 0; 483 } 484 485 static int friio_frontend_attach(struct dvb_usb_adapter *adap) 486 { 487 const struct i2c_board_info *info; 488 struct dvb_usb_device *d; 489 struct tc90522_config cfg; 490 struct i2c_client *cl; 491 struct friio_priv *priv; 492 493 info = &friio_config.demod_info; 494 d = adap_to_d(adap); 495 cl = dvb_module_probe("tc90522", info->type, 496 &d->i2c_adap, info->addr, &cfg); 497 if (!cl) 498 return -ENODEV; 499 adap->fe[0] = cfg.fe; 500 501 /* ignore cfg.tuner_i2c and create new one */ 502 priv = adap_to_priv(adap); 503 priv->i2c_client_demod = cl; 504 priv->tuner_adap.algo = &friio_tuner_i2c_algo; 505 priv->tuner_adap.dev.parent = &d->udev->dev; 506 strscpy(priv->tuner_adap.name, d->name, sizeof(priv->tuner_adap.name)); 507 strlcat(priv->tuner_adap.name, "-tuner", sizeof(priv->tuner_adap.name)); 508 priv->demod_sub_i2c = &priv->tuner_adap; 509 i2c_set_adapdata(&priv->tuner_adap, d); 510 511 return i2c_add_adapter(&priv->tuner_adap); 512 } 513 514 static int friio_frontend_detach(struct dvb_usb_adapter *adap) 515 { 516 struct friio_priv *priv; 517 518 priv = adap_to_priv(adap); 519 i2c_del_adapter(&priv->tuner_adap); 520 dvb_module_release(priv->i2c_client_demod); 521 return 0; 522 } 523 524 static int friio_tuner_attach(struct dvb_usb_adapter *adap) 525 { 526 const struct i2c_board_info *info; 527 struct dvb_pll_config cfg; 528 struct i2c_client *cl; 529 struct friio_priv *priv; 530 531 priv = adap_to_priv(adap); 532 info = &friio_config.tuner_info; 533 cfg = friio_config.tuner_cfg; 534 cfg.fe = adap->fe[0]; 535 536 cl = dvb_module_probe("dvb_pll", info->type, 537 priv->demod_sub_i2c, info->addr, &cfg); 538 if (!cl) 539 return -ENODEV; 540 priv->i2c_client_tuner = cl; 541 return 0; 542 } 543 544 static int friio_tuner_detach(struct dvb_usb_adapter *adap) 545 { 546 struct friio_priv *priv; 547 548 priv = adap_to_priv(adap); 549 dvb_module_release(priv->i2c_client_tuner); 550 return 0; 551 } 552 553 static int friio_init(struct dvb_usb_device *d) 554 { 555 int i; 556 int ret; 557 struct friio_priv *priv; 558 559 static const u8 demod_init[][2] = { 560 {0x01, 0x40}, {0x04, 0x38}, {0x05, 0x40}, {0x07, 0x40}, 561 {0x0f, 0x4f}, {0x11, 0x21}, {0x12, 0x0b}, {0x13, 0x2f}, 562 {0x14, 0x31}, {0x16, 0x02}, {0x21, 0xc4}, {0x22, 0x20}, 563 {0x2c, 0x79}, {0x2d, 0x34}, {0x2f, 0x00}, {0x30, 0x28}, 564 {0x31, 0x31}, {0x32, 0xdf}, {0x38, 0x01}, {0x39, 0x78}, 565 {0x3b, 0x33}, {0x3c, 0x33}, {0x48, 0x90}, {0x51, 0x68}, 566 {0x5e, 0x38}, {0x71, 0x00}, {0x72, 0x08}, {0x77, 0x00}, 567 {0xc0, 0x21}, {0xc1, 0x10}, {0xe4, 0x1a}, {0xea, 0x1f}, 568 {0x77, 0x00}, {0x71, 0x00}, {0x71, 0x00}, {0x76, 0x0c}, 569 }; 570 571 /* power on LNA? */ 572 ret = friio_ext_ctl(d, FRIIO_LED_STOPPED, true); 573 if (ret < 0) 574 return ret; 575 msleep(20); 576 577 /* init/config demod */ 578 priv = d_to_priv(d); 579 for (i = 0; i < ARRAY_SIZE(demod_init); i++) { 580 int ret; 581 582 ret = i2c_master_send(priv->i2c_client_demod, demod_init[i], 2); 583 if (ret < 0) 584 return ret; 585 } 586 msleep(100); 587 return 0; 588 } 589 590 static void friio_exit(struct dvb_usb_device *d) 591 { 592 friio_ext_ctl(d, FRIIO_LED_STOPPED, false); 593 } 594 595 static int friio_streaming_ctrl(struct dvb_frontend *fe, int onoff) 596 { 597 u32 led_color; 598 599 led_color = onoff ? FRIIO_LED_RUNNING : FRIIO_LED_STOPPED; 600 return friio_ext_ctl(fe_to_d(fe), led_color, true); 601 } 602 603 604 static struct dvb_usb_device_properties friio_props = { 605 .driver_name = KBUILD_MODNAME, 606 .owner = THIS_MODULE, 607 .adapter_nr = adapter_nr, 608 609 .size_of_priv = sizeof(struct friio_priv), 610 611 .i2c_algo = &gl861_i2c_algo, 612 .power_ctrl = friio_power_ctrl, 613 .frontend_attach = friio_frontend_attach, 614 .frontend_detach = friio_frontend_detach, 615 .tuner_attach = friio_tuner_attach, 616 .tuner_detach = friio_tuner_detach, 617 .init = friio_init, 618 .exit = friio_exit, 619 .streaming_ctrl = friio_streaming_ctrl, 620 621 .num_adapters = 1, 622 .adapter = { 623 { 624 .stream = DVB_USB_STREAM_BULK(0x01, 8, 16384), 625 } 626 } 627 }; 628 629 static const struct usb_device_id gl861_id_table[] = { 630 { DVB_USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801, 631 &gl861_props, "MSI Mega Sky 55801 DVB-T USB2.0", NULL) }, 632 { DVB_USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU, 633 &gl861_props, "A-LINK DTU DVB-T USB2.0", NULL) }, 634 { DVB_USB_DEVICE(USB_VID_774, USB_PID_FRIIO_WHITE, 635 &friio_props, "774 Friio White ISDB-T USB2.0", NULL) }, 636 { } 637 }; 638 MODULE_DEVICE_TABLE(usb, gl861_id_table); 639 640 static struct usb_driver gl861_usb_driver = { 641 .name = KBUILD_MODNAME, 642 .id_table = gl861_id_table, 643 .probe = dvb_usbv2_probe, 644 .disconnect = dvb_usbv2_disconnect, 645 .suspend = dvb_usbv2_suspend, 646 .resume = dvb_usbv2_resume, 647 .reset_resume = dvb_usbv2_reset_resume, 648 .no_dynamic_id = 1, 649 .soft_unbind = 1, 650 }; 651 652 module_usb_driver(gl861_usb_driver); 653 654 MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>"); 655 MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861"); 656 MODULE_VERSION("0.1"); 657 MODULE_LICENSE("GPL"); 658