1 /* 2 * Driver for the Auvitek USB bridge 3 * 4 * Copyright (c) 2008 Steven Toth <stoth@linuxtv.org> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22 #include "au0828.h" 23 24 #include <linux/module.h> 25 #include <linux/slab.h> 26 #include <linux/init.h> 27 #include <linux/device.h> 28 #include <media/v4l2-common.h> 29 #include <media/tuner.h> 30 31 #include "au8522.h" 32 #include "xc5000.h" 33 #include "mxl5007t.h" 34 #include "tda18271.h" 35 36 static int preallocate_big_buffers; 37 module_param_named(preallocate_big_buffers, preallocate_big_buffers, int, 0644); 38 MODULE_PARM_DESC(preallocate_big_buffers, "Preallocate the larger transfer buffers at module load time"); 39 40 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 41 42 #define _AU0828_BULKPIPE 0x83 43 #define _BULKPIPESIZE 0xe522 44 45 static u8 hauppauge_hvr950q_led_states[] = { 46 0x00, /* off */ 47 0x02, /* yellow */ 48 0x04, /* green */ 49 }; 50 51 static struct au8522_led_config hauppauge_hvr950q_led_cfg = { 52 .gpio_output = 0x00e0, 53 .gpio_output_enable = 0x6006, 54 .gpio_output_disable = 0x0660, 55 56 .gpio_leds = 0x00e2, 57 .led_states = hauppauge_hvr950q_led_states, 58 .num_led_states = sizeof(hauppauge_hvr950q_led_states), 59 60 .vsb8_strong = 20 /* dB */ * 10, 61 .qam64_strong = 25 /* dB */ * 10, 62 .qam256_strong = 32 /* dB */ * 10, 63 }; 64 65 static struct au8522_config hauppauge_hvr950q_config = { 66 .demod_address = 0x8e >> 1, 67 .status_mode = AU8522_DEMODLOCKING, 68 .qam_if = AU8522_IF_6MHZ, 69 .vsb_if = AU8522_IF_6MHZ, 70 .led_cfg = &hauppauge_hvr950q_led_cfg, 71 }; 72 73 static struct au8522_config fusionhdtv7usb_config = { 74 .demod_address = 0x8e >> 1, 75 .status_mode = AU8522_DEMODLOCKING, 76 .qam_if = AU8522_IF_6MHZ, 77 .vsb_if = AU8522_IF_6MHZ, 78 }; 79 80 static struct au8522_config hauppauge_woodbury_config = { 81 .demod_address = 0x8e >> 1, 82 .status_mode = AU8522_DEMODLOCKING, 83 .qam_if = AU8522_IF_4MHZ, 84 .vsb_if = AU8522_IF_3_25MHZ, 85 }; 86 87 static struct xc5000_config hauppauge_xc5000a_config = { 88 .i2c_address = 0x61, 89 .if_khz = 6000, 90 .chip_id = XC5000A, 91 .output_amp = 0x8f, 92 }; 93 94 static struct xc5000_config hauppauge_xc5000c_config = { 95 .i2c_address = 0x61, 96 .if_khz = 6000, 97 .chip_id = XC5000C, 98 .output_amp = 0x8f, 99 }; 100 101 static struct mxl5007t_config mxl5007t_hvr950q_config = { 102 .xtal_freq_hz = MxL_XTAL_24_MHZ, 103 .if_freq_hz = MxL_IF_6_MHZ, 104 }; 105 106 static struct tda18271_config hauppauge_woodbury_tunerconfig = { 107 .gate = TDA18271_GATE_DIGITAL, 108 }; 109 110 static void au0828_restart_dvb_streaming(struct work_struct *work); 111 112 /*-------------------------------------------------------------------*/ 113 static void urb_completion(struct urb *purb) 114 { 115 struct au0828_dev *dev = purb->context; 116 int ptype = usb_pipetype(purb->pipe); 117 unsigned char *ptr; 118 119 dprintk(2, "%s: %d\n", __func__, purb->actual_length); 120 121 if (!dev) { 122 dprintk(2, "%s: no dev!\n", __func__); 123 return; 124 } 125 126 if (!dev->urb_streaming) { 127 dprintk(2, "%s: not streaming!\n", __func__); 128 return; 129 } 130 131 if (ptype != PIPE_BULK) { 132 pr_err("%s: Unsupported URB type %d\n", 133 __func__, ptype); 134 return; 135 } 136 137 /* See if the stream is corrupted (to work around a hardware 138 bug where the stream gets misaligned */ 139 ptr = purb->transfer_buffer; 140 if (purb->actual_length > 0 && ptr[0] != 0x47) { 141 dprintk(1, "Need to restart streaming %02x len=%d!\n", 142 ptr[0], purb->actual_length); 143 schedule_work(&dev->restart_streaming); 144 return; 145 } 146 147 /* Feed the transport payload into the kernel demux */ 148 dvb_dmx_swfilter_packets(&dev->dvb.demux, 149 purb->transfer_buffer, purb->actual_length / 188); 150 151 /* Clean the buffer before we requeue */ 152 memset(purb->transfer_buffer, 0, URB_BUFSIZE); 153 154 /* Requeue URB */ 155 usb_submit_urb(purb, GFP_ATOMIC); 156 } 157 158 static int stop_urb_transfer(struct au0828_dev *dev) 159 { 160 int i; 161 162 dprintk(2, "%s()\n", __func__); 163 164 if (!dev->urb_streaming) 165 return 0; 166 167 dev->urb_streaming = false; 168 for (i = 0; i < URB_COUNT; i++) { 169 if (dev->urbs[i]) { 170 usb_kill_urb(dev->urbs[i]); 171 if (!preallocate_big_buffers) 172 kfree(dev->urbs[i]->transfer_buffer); 173 174 usb_free_urb(dev->urbs[i]); 175 } 176 } 177 178 return 0; 179 } 180 181 static int start_urb_transfer(struct au0828_dev *dev) 182 { 183 struct urb *purb; 184 int i, ret = -ENOMEM; 185 186 dprintk(2, "%s()\n", __func__); 187 188 if (dev->urb_streaming) { 189 dprintk(2, "%s: bulk xfer already running!\n", __func__); 190 return 0; 191 } 192 193 for (i = 0; i < URB_COUNT; i++) { 194 195 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL); 196 if (!dev->urbs[i]) 197 goto err; 198 199 purb = dev->urbs[i]; 200 201 if (preallocate_big_buffers) 202 purb->transfer_buffer = dev->dig_transfer_buffer[i]; 203 else 204 purb->transfer_buffer = kzalloc(URB_BUFSIZE, 205 GFP_KERNEL); 206 207 if (!purb->transfer_buffer) { 208 usb_free_urb(purb); 209 dev->urbs[i] = NULL; 210 pr_err("%s: failed big buffer allocation, err = %d\n", 211 __func__, ret); 212 goto err; 213 } 214 215 purb->status = -EINPROGRESS; 216 usb_fill_bulk_urb(purb, 217 dev->usbdev, 218 usb_rcvbulkpipe(dev->usbdev, 219 _AU0828_BULKPIPE), 220 purb->transfer_buffer, 221 URB_BUFSIZE, 222 urb_completion, 223 dev); 224 225 } 226 227 for (i = 0; i < URB_COUNT; i++) { 228 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC); 229 if (ret != 0) { 230 stop_urb_transfer(dev); 231 pr_err("%s: failed urb submission, err = %d\n", 232 __func__, ret); 233 return ret; 234 } 235 } 236 237 dev->urb_streaming = true; 238 ret = 0; 239 240 err: 241 return ret; 242 } 243 244 static void au0828_start_transport(struct au0828_dev *dev) 245 { 246 au0828_write(dev, 0x608, 0x90); 247 au0828_write(dev, 0x609, 0x72); 248 au0828_write(dev, 0x60a, 0x71); 249 au0828_write(dev, 0x60b, 0x01); 250 251 } 252 253 static void au0828_stop_transport(struct au0828_dev *dev, int full_stop) 254 { 255 if (full_stop) { 256 au0828_write(dev, 0x608, 0x00); 257 au0828_write(dev, 0x609, 0x00); 258 au0828_write(dev, 0x60a, 0x00); 259 } 260 au0828_write(dev, 0x60b, 0x00); 261 } 262 263 static int au0828_dvb_start_feed(struct dvb_demux_feed *feed) 264 { 265 struct dvb_demux *demux = feed->demux; 266 struct au0828_dev *dev = (struct au0828_dev *) demux->priv; 267 struct au0828_dvb *dvb = &dev->dvb; 268 int ret = 0; 269 270 dprintk(1, "%s()\n", __func__); 271 272 if (!demux->dmx.frontend) 273 return -EINVAL; 274 275 if (dvb->frontend) { 276 mutex_lock(&dvb->lock); 277 dvb->start_count++; 278 dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__, 279 dvb->start_count, dvb->stop_count); 280 if (dvb->feeding++ == 0) { 281 /* Start transport */ 282 au0828_start_transport(dev); 283 ret = start_urb_transfer(dev); 284 if (ret < 0) { 285 au0828_stop_transport(dev, 0); 286 dvb->feeding--; /* We ran out of memory... */ 287 } 288 } 289 mutex_unlock(&dvb->lock); 290 } 291 292 return ret; 293 } 294 295 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed) 296 { 297 struct dvb_demux *demux = feed->demux; 298 struct au0828_dev *dev = (struct au0828_dev *) demux->priv; 299 struct au0828_dvb *dvb = &dev->dvb; 300 int ret = 0; 301 302 dprintk(1, "%s()\n", __func__); 303 304 if (dvb->frontend) { 305 cancel_work_sync(&dev->restart_streaming); 306 307 mutex_lock(&dvb->lock); 308 dvb->stop_count++; 309 dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__, 310 dvb->start_count, dvb->stop_count); 311 if (dvb->feeding > 0) { 312 dvb->feeding--; 313 if (dvb->feeding == 0) { 314 /* Stop transport */ 315 ret = stop_urb_transfer(dev); 316 au0828_stop_transport(dev, 0); 317 } 318 } 319 mutex_unlock(&dvb->lock); 320 } 321 322 return ret; 323 } 324 325 static void au0828_restart_dvb_streaming(struct work_struct *work) 326 { 327 struct au0828_dev *dev = container_of(work, struct au0828_dev, 328 restart_streaming); 329 struct au0828_dvb *dvb = &dev->dvb; 330 331 if (!dev->urb_streaming) 332 return; 333 334 dprintk(1, "Restarting streaming...!\n"); 335 336 mutex_lock(&dvb->lock); 337 338 /* Stop transport */ 339 stop_urb_transfer(dev); 340 au0828_stop_transport(dev, 1); 341 342 /* Start transport */ 343 au0828_start_transport(dev); 344 start_urb_transfer(dev); 345 346 mutex_unlock(&dvb->lock); 347 } 348 349 static int au0828_set_frontend(struct dvb_frontend *fe) 350 { 351 struct au0828_dev *dev = fe->dvb->priv; 352 struct au0828_dvb *dvb = &dev->dvb; 353 int ret, was_streaming; 354 355 mutex_lock(&dvb->lock); 356 was_streaming = dev->urb_streaming; 357 if (was_streaming) { 358 au0828_stop_transport(dev, 1); 359 360 /* 361 * We can't hold a mutex here, as the restart_streaming 362 * kthread may also hold it. 363 */ 364 mutex_unlock(&dvb->lock); 365 cancel_work_sync(&dev->restart_streaming); 366 mutex_lock(&dvb->lock); 367 368 stop_urb_transfer(dev); 369 } 370 mutex_unlock(&dvb->lock); 371 372 ret = dvb->set_frontend(fe); 373 374 if (was_streaming) { 375 mutex_lock(&dvb->lock); 376 au0828_start_transport(dev); 377 start_urb_transfer(dev); 378 mutex_unlock(&dvb->lock); 379 } 380 381 return ret; 382 } 383 384 static int dvb_register(struct au0828_dev *dev) 385 { 386 struct au0828_dvb *dvb = &dev->dvb; 387 int result; 388 389 dprintk(1, "%s()\n", __func__); 390 391 if (preallocate_big_buffers) { 392 int i; 393 for (i = 0; i < URB_COUNT; i++) { 394 dev->dig_transfer_buffer[i] = kzalloc(URB_BUFSIZE, 395 GFP_KERNEL); 396 397 if (!dev->dig_transfer_buffer[i]) { 398 result = -ENOMEM; 399 400 pr_err("failed buffer allocation (errno = %d)\n", 401 result); 402 goto fail_adapter; 403 } 404 } 405 } 406 407 INIT_WORK(&dev->restart_streaming, au0828_restart_dvb_streaming); 408 409 /* register adapter */ 410 result = dvb_register_adapter(&dvb->adapter, 411 KBUILD_MODNAME, THIS_MODULE, 412 &dev->usbdev->dev, adapter_nr); 413 if (result < 0) { 414 pr_err("dvb_register_adapter failed (errno = %d)\n", 415 result); 416 goto fail_adapter; 417 } 418 419 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 420 dvb->adapter.mdev = dev->media_dev; 421 #endif 422 423 dvb->adapter.priv = dev; 424 425 /* register frontend */ 426 result = dvb_register_frontend(&dvb->adapter, dvb->frontend); 427 if (result < 0) { 428 pr_err("dvb_register_frontend failed (errno = %d)\n", 429 result); 430 goto fail_frontend; 431 } 432 433 /* Hook dvb frontend */ 434 dvb->set_frontend = dvb->frontend->ops.set_frontend; 435 dvb->frontend->ops.set_frontend = au0828_set_frontend; 436 437 /* register demux stuff */ 438 dvb->demux.dmx.capabilities = 439 DMX_TS_FILTERING | DMX_SECTION_FILTERING | 440 DMX_MEMORY_BASED_FILTERING; 441 dvb->demux.priv = dev; 442 dvb->demux.filternum = 256; 443 dvb->demux.feednum = 256; 444 dvb->demux.start_feed = au0828_dvb_start_feed; 445 dvb->demux.stop_feed = au0828_dvb_stop_feed; 446 result = dvb_dmx_init(&dvb->demux); 447 if (result < 0) { 448 pr_err("dvb_dmx_init failed (errno = %d)\n", result); 449 goto fail_dmx; 450 } 451 452 dvb->dmxdev.filternum = 256; 453 dvb->dmxdev.demux = &dvb->demux.dmx; 454 dvb->dmxdev.capabilities = 0; 455 result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter); 456 if (result < 0) { 457 pr_err("dvb_dmxdev_init failed (errno = %d)\n", result); 458 goto fail_dmxdev; 459 } 460 461 dvb->fe_hw.source = DMX_FRONTEND_0; 462 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw); 463 if (result < 0) { 464 pr_err("add_frontend failed (DMX_FRONTEND_0, errno = %d)\n", 465 result); 466 goto fail_fe_hw; 467 } 468 469 dvb->fe_mem.source = DMX_MEMORY_FE; 470 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem); 471 if (result < 0) { 472 pr_err("add_frontend failed (DMX_MEMORY_FE, errno = %d)\n", 473 result); 474 goto fail_fe_mem; 475 } 476 477 result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw); 478 if (result < 0) { 479 pr_err("connect_frontend failed (errno = %d)\n", result); 480 goto fail_fe_conn; 481 } 482 483 /* register network adapter */ 484 dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); 485 486 dvb->start_count = 0; 487 dvb->stop_count = 0; 488 489 result = dvb_create_media_graph(&dvb->adapter); 490 if (result < 0) 491 goto fail_create_graph; 492 493 return 0; 494 495 fail_create_graph: 496 dvb_net_release(&dvb->net); 497 fail_fe_conn: 498 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); 499 fail_fe_mem: 500 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); 501 fail_fe_hw: 502 dvb_dmxdev_release(&dvb->dmxdev); 503 fail_dmxdev: 504 dvb_dmx_release(&dvb->demux); 505 fail_dmx: 506 dvb_unregister_frontend(dvb->frontend); 507 fail_frontend: 508 dvb_frontend_detach(dvb->frontend); 509 dvb_unregister_adapter(&dvb->adapter); 510 fail_adapter: 511 512 if (preallocate_big_buffers) { 513 int i; 514 for (i = 0; i < URB_COUNT; i++) 515 kfree(dev->dig_transfer_buffer[i]); 516 } 517 518 return result; 519 } 520 521 void au0828_dvb_unregister(struct au0828_dev *dev) 522 { 523 struct au0828_dvb *dvb = &dev->dvb; 524 525 dprintk(1, "%s()\n", __func__); 526 527 if (dvb->frontend == NULL) 528 return; 529 530 cancel_work_sync(&dev->restart_streaming); 531 532 dvb_net_release(&dvb->net); 533 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); 534 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); 535 dvb_dmxdev_release(&dvb->dmxdev); 536 dvb_dmx_release(&dvb->demux); 537 dvb_unregister_frontend(dvb->frontend); 538 dvb_frontend_detach(dvb->frontend); 539 dvb_unregister_adapter(&dvb->adapter); 540 541 if (preallocate_big_buffers) { 542 int i; 543 for (i = 0; i < URB_COUNT; i++) 544 kfree(dev->dig_transfer_buffer[i]); 545 } 546 dvb->frontend = NULL; 547 } 548 549 /* All the DVB attach calls go here, this function get's modified 550 * for each new card. No other function in this file needs 551 * to change. 552 */ 553 int au0828_dvb_register(struct au0828_dev *dev) 554 { 555 struct au0828_dvb *dvb = &dev->dvb; 556 int ret; 557 558 dprintk(1, "%s()\n", __func__); 559 560 /* init frontend */ 561 switch (dev->boardnr) { 562 case AU0828_BOARD_HAUPPAUGE_HVR850: 563 case AU0828_BOARD_HAUPPAUGE_HVR950Q: 564 dvb->frontend = dvb_attach(au8522_attach, 565 &hauppauge_hvr950q_config, 566 &dev->i2c_adap); 567 if (dvb->frontend != NULL) 568 switch (dev->board.tuner_type) { 569 default: 570 case TUNER_XC5000: 571 dvb_attach(xc5000_attach, dvb->frontend, 572 &dev->i2c_adap, 573 &hauppauge_xc5000a_config); 574 break; 575 case TUNER_XC5000C: 576 dvb_attach(xc5000_attach, dvb->frontend, 577 &dev->i2c_adap, 578 &hauppauge_xc5000c_config); 579 break; 580 } 581 break; 582 case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL: 583 dvb->frontend = dvb_attach(au8522_attach, 584 &hauppauge_hvr950q_config, 585 &dev->i2c_adap); 586 if (dvb->frontend != NULL) 587 dvb_attach(mxl5007t_attach, dvb->frontend, 588 &dev->i2c_adap, 0x60, 589 &mxl5007t_hvr950q_config); 590 break; 591 case AU0828_BOARD_HAUPPAUGE_WOODBURY: 592 dvb->frontend = dvb_attach(au8522_attach, 593 &hauppauge_woodbury_config, 594 &dev->i2c_adap); 595 if (dvb->frontend != NULL) 596 dvb_attach(tda18271_attach, dvb->frontend, 597 0x60, &dev->i2c_adap, 598 &hauppauge_woodbury_tunerconfig); 599 break; 600 case AU0828_BOARD_DVICO_FUSIONHDTV7: 601 dvb->frontend = dvb_attach(au8522_attach, 602 &fusionhdtv7usb_config, 603 &dev->i2c_adap); 604 if (dvb->frontend != NULL) { 605 dvb_attach(xc5000_attach, dvb->frontend, 606 &dev->i2c_adap, 607 &hauppauge_xc5000a_config); 608 } 609 break; 610 default: 611 pr_warn("The frontend of your DVB/ATSC card isn't supported yet\n"); 612 break; 613 } 614 if (NULL == dvb->frontend) { 615 pr_err("%s() Frontend initialization failed\n", 616 __func__); 617 return -1; 618 } 619 /* define general-purpose callback pointer */ 620 dvb->frontend->callback = au0828_tuner_callback; 621 622 /* register everything */ 623 ret = dvb_register(dev); 624 if (ret < 0) { 625 if (dvb->frontend->ops.release) 626 dvb->frontend->ops.release(dvb->frontend); 627 dvb->frontend = NULL; 628 return ret; 629 } 630 631 return 0; 632 } 633 634 void au0828_dvb_suspend(struct au0828_dev *dev) 635 { 636 struct au0828_dvb *dvb = &dev->dvb; 637 int rc; 638 639 if (dvb->frontend) { 640 if (dev->urb_streaming) { 641 cancel_work_sync(&dev->restart_streaming); 642 /* Stop transport */ 643 mutex_lock(&dvb->lock); 644 stop_urb_transfer(dev); 645 au0828_stop_transport(dev, 1); 646 mutex_unlock(&dvb->lock); 647 dev->need_urb_start = true; 648 } 649 /* suspend frontend - does tuner and fe to sleep */ 650 rc = dvb_frontend_suspend(dvb->frontend); 651 pr_info("au0828_dvb_suspend(): Suspending DVB fe %d\n", rc); 652 } 653 } 654 655 void au0828_dvb_resume(struct au0828_dev *dev) 656 { 657 struct au0828_dvb *dvb = &dev->dvb; 658 int rc; 659 660 if (dvb->frontend) { 661 /* resume frontend - does fe and tuner init */ 662 rc = dvb_frontend_resume(dvb->frontend); 663 pr_info("au0828_dvb_resume(): Resuming DVB fe %d\n", rc); 664 if (dev->need_urb_start) { 665 /* Start transport */ 666 mutex_lock(&dvb->lock); 667 au0828_start_transport(dev); 668 start_urb_transfer(dev); 669 mutex_unlock(&dvb->lock); 670 } 671 } 672 } 673