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; 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 return -ENOMEM; 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 ret = -ENOMEM; 211 pr_err("%s: failed big buffer allocation, err = %d\n", 212 __func__, ret); 213 return ret; 214 } 215 216 purb->status = -EINPROGRESS; 217 usb_fill_bulk_urb(purb, 218 dev->usbdev, 219 usb_rcvbulkpipe(dev->usbdev, 220 _AU0828_BULKPIPE), 221 purb->transfer_buffer, 222 URB_BUFSIZE, 223 urb_completion, 224 dev); 225 226 } 227 228 for (i = 0; i < URB_COUNT; i++) { 229 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC); 230 if (ret != 0) { 231 stop_urb_transfer(dev); 232 pr_err("%s: failed urb submission, err = %d\n", 233 __func__, ret); 234 return ret; 235 } 236 } 237 238 dev->urb_streaming = true; 239 return 0; 240 } 241 242 static void au0828_start_transport(struct au0828_dev *dev) 243 { 244 au0828_write(dev, 0x608, 0x90); 245 au0828_write(dev, 0x609, 0x72); 246 au0828_write(dev, 0x60a, 0x71); 247 au0828_write(dev, 0x60b, 0x01); 248 249 } 250 251 static void au0828_stop_transport(struct au0828_dev *dev, int full_stop) 252 { 253 if (full_stop) { 254 au0828_write(dev, 0x608, 0x00); 255 au0828_write(dev, 0x609, 0x00); 256 au0828_write(dev, 0x60a, 0x00); 257 } 258 au0828_write(dev, 0x60b, 0x00); 259 } 260 261 static int au0828_dvb_start_feed(struct dvb_demux_feed *feed) 262 { 263 struct dvb_demux *demux = feed->demux; 264 struct au0828_dev *dev = (struct au0828_dev *) demux->priv; 265 struct au0828_dvb *dvb = &dev->dvb; 266 int ret = 0; 267 268 dprintk(1, "%s()\n", __func__); 269 270 if (!demux->dmx.frontend) 271 return -EINVAL; 272 273 if (dvb->frontend) { 274 mutex_lock(&dvb->lock); 275 dvb->start_count++; 276 dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__, 277 dvb->start_count, dvb->stop_count); 278 if (dvb->feeding++ == 0) { 279 /* Start transport */ 280 au0828_start_transport(dev); 281 ret = start_urb_transfer(dev); 282 if (ret < 0) { 283 au0828_stop_transport(dev, 0); 284 dvb->feeding--; /* We ran out of memory... */ 285 } 286 } 287 mutex_unlock(&dvb->lock); 288 } 289 290 return ret; 291 } 292 293 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed) 294 { 295 struct dvb_demux *demux = feed->demux; 296 struct au0828_dev *dev = (struct au0828_dev *) demux->priv; 297 struct au0828_dvb *dvb = &dev->dvb; 298 int ret = 0; 299 300 dprintk(1, "%s()\n", __func__); 301 302 if (dvb->frontend) { 303 cancel_work_sync(&dev->restart_streaming); 304 305 mutex_lock(&dvb->lock); 306 dvb->stop_count++; 307 dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__, 308 dvb->start_count, dvb->stop_count); 309 if (dvb->feeding > 0) { 310 dvb->feeding--; 311 if (dvb->feeding == 0) { 312 /* Stop transport */ 313 ret = stop_urb_transfer(dev); 314 au0828_stop_transport(dev, 0); 315 } 316 } 317 mutex_unlock(&dvb->lock); 318 } 319 320 return ret; 321 } 322 323 static void au0828_restart_dvb_streaming(struct work_struct *work) 324 { 325 struct au0828_dev *dev = container_of(work, struct au0828_dev, 326 restart_streaming); 327 struct au0828_dvb *dvb = &dev->dvb; 328 329 if (!dev->urb_streaming) 330 return; 331 332 dprintk(1, "Restarting streaming...!\n"); 333 334 mutex_lock(&dvb->lock); 335 336 /* Stop transport */ 337 stop_urb_transfer(dev); 338 au0828_stop_transport(dev, 1); 339 340 /* Start transport */ 341 au0828_start_transport(dev); 342 start_urb_transfer(dev); 343 344 mutex_unlock(&dvb->lock); 345 } 346 347 static int au0828_set_frontend(struct dvb_frontend *fe) 348 { 349 struct au0828_dev *dev = fe->dvb->priv; 350 struct au0828_dvb *dvb = &dev->dvb; 351 int ret, was_streaming; 352 353 mutex_lock(&dvb->lock); 354 was_streaming = dev->urb_streaming; 355 if (was_streaming) { 356 au0828_stop_transport(dev, 1); 357 358 /* 359 * We can't hold a mutex here, as the restart_streaming 360 * kthread may also hold it. 361 */ 362 mutex_unlock(&dvb->lock); 363 cancel_work_sync(&dev->restart_streaming); 364 mutex_lock(&dvb->lock); 365 366 stop_urb_transfer(dev); 367 } 368 mutex_unlock(&dvb->lock); 369 370 ret = dvb->set_frontend(fe); 371 372 if (was_streaming) { 373 mutex_lock(&dvb->lock); 374 au0828_start_transport(dev); 375 start_urb_transfer(dev); 376 mutex_unlock(&dvb->lock); 377 } 378 379 return ret; 380 } 381 382 static int dvb_register(struct au0828_dev *dev) 383 { 384 struct au0828_dvb *dvb = &dev->dvb; 385 int result; 386 387 dprintk(1, "%s()\n", __func__); 388 389 if (preallocate_big_buffers) { 390 int i; 391 for (i = 0; i < URB_COUNT; i++) { 392 dev->dig_transfer_buffer[i] = kzalloc(URB_BUFSIZE, 393 GFP_KERNEL); 394 395 if (!dev->dig_transfer_buffer[i]) { 396 result = -ENOMEM; 397 398 pr_err("failed buffer allocation (errno = %d)\n", 399 result); 400 goto fail_adapter; 401 } 402 } 403 } 404 405 INIT_WORK(&dev->restart_streaming, au0828_restart_dvb_streaming); 406 407 /* register adapter */ 408 result = dvb_register_adapter(&dvb->adapter, 409 KBUILD_MODNAME, THIS_MODULE, 410 &dev->usbdev->dev, adapter_nr); 411 if (result < 0) { 412 pr_err("dvb_register_adapter failed (errno = %d)\n", 413 result); 414 goto fail_adapter; 415 } 416 417 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 418 dvb->adapter.mdev = dev->media_dev; 419 #endif 420 421 dvb->adapter.priv = dev; 422 423 /* register frontend */ 424 result = dvb_register_frontend(&dvb->adapter, dvb->frontend); 425 if (result < 0) { 426 pr_err("dvb_register_frontend failed (errno = %d)\n", 427 result); 428 goto fail_frontend; 429 } 430 431 /* Hook dvb frontend */ 432 dvb->set_frontend = dvb->frontend->ops.set_frontend; 433 dvb->frontend->ops.set_frontend = au0828_set_frontend; 434 435 /* register demux stuff */ 436 dvb->demux.dmx.capabilities = 437 DMX_TS_FILTERING | DMX_SECTION_FILTERING | 438 DMX_MEMORY_BASED_FILTERING; 439 dvb->demux.priv = dev; 440 dvb->demux.filternum = 256; 441 dvb->demux.feednum = 256; 442 dvb->demux.start_feed = au0828_dvb_start_feed; 443 dvb->demux.stop_feed = au0828_dvb_stop_feed; 444 result = dvb_dmx_init(&dvb->demux); 445 if (result < 0) { 446 pr_err("dvb_dmx_init failed (errno = %d)\n", result); 447 goto fail_dmx; 448 } 449 450 dvb->dmxdev.filternum = 256; 451 dvb->dmxdev.demux = &dvb->demux.dmx; 452 dvb->dmxdev.capabilities = 0; 453 result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter); 454 if (result < 0) { 455 pr_err("dvb_dmxdev_init failed (errno = %d)\n", result); 456 goto fail_dmxdev; 457 } 458 459 dvb->fe_hw.source = DMX_FRONTEND_0; 460 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw); 461 if (result < 0) { 462 pr_err("add_frontend failed (DMX_FRONTEND_0, errno = %d)\n", 463 result); 464 goto fail_fe_hw; 465 } 466 467 dvb->fe_mem.source = DMX_MEMORY_FE; 468 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem); 469 if (result < 0) { 470 pr_err("add_frontend failed (DMX_MEMORY_FE, errno = %d)\n", 471 result); 472 goto fail_fe_mem; 473 } 474 475 result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw); 476 if (result < 0) { 477 pr_err("connect_frontend failed (errno = %d)\n", result); 478 goto fail_fe_conn; 479 } 480 481 /* register network adapter */ 482 dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); 483 484 dvb->start_count = 0; 485 dvb->stop_count = 0; 486 487 result = dvb_create_media_graph(&dvb->adapter, false); 488 if (result < 0) 489 goto fail_create_graph; 490 491 return 0; 492 493 fail_create_graph: 494 dvb_net_release(&dvb->net); 495 fail_fe_conn: 496 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); 497 fail_fe_mem: 498 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); 499 fail_fe_hw: 500 dvb_dmxdev_release(&dvb->dmxdev); 501 fail_dmxdev: 502 dvb_dmx_release(&dvb->demux); 503 fail_dmx: 504 dvb_unregister_frontend(dvb->frontend); 505 fail_frontend: 506 dvb_frontend_detach(dvb->frontend); 507 dvb_unregister_adapter(&dvb->adapter); 508 fail_adapter: 509 510 if (preallocate_big_buffers) { 511 int i; 512 for (i = 0; i < URB_COUNT; i++) 513 kfree(dev->dig_transfer_buffer[i]); 514 } 515 516 return result; 517 } 518 519 void au0828_dvb_unregister(struct au0828_dev *dev) 520 { 521 struct au0828_dvb *dvb = &dev->dvb; 522 523 dprintk(1, "%s()\n", __func__); 524 525 if (dvb->frontend == NULL) 526 return; 527 528 cancel_work_sync(&dev->restart_streaming); 529 530 dvb_net_release(&dvb->net); 531 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); 532 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); 533 dvb_dmxdev_release(&dvb->dmxdev); 534 dvb_dmx_release(&dvb->demux); 535 dvb_unregister_frontend(dvb->frontend); 536 dvb_frontend_detach(dvb->frontend); 537 dvb_unregister_adapter(&dvb->adapter); 538 539 if (preallocate_big_buffers) { 540 int i; 541 for (i = 0; i < URB_COUNT; i++) 542 kfree(dev->dig_transfer_buffer[i]); 543 } 544 dvb->frontend = NULL; 545 } 546 547 /* All the DVB attach calls go here, this function get's modified 548 * for each new card. No other function in this file needs 549 * to change. 550 */ 551 int au0828_dvb_register(struct au0828_dev *dev) 552 { 553 struct au0828_dvb *dvb = &dev->dvb; 554 int ret; 555 556 dprintk(1, "%s()\n", __func__); 557 558 /* init frontend */ 559 switch (dev->boardnr) { 560 case AU0828_BOARD_HAUPPAUGE_HVR850: 561 case AU0828_BOARD_HAUPPAUGE_HVR950Q: 562 dvb->frontend = dvb_attach(au8522_attach, 563 &hauppauge_hvr950q_config, 564 &dev->i2c_adap); 565 if (dvb->frontend != NULL) 566 switch (dev->board.tuner_type) { 567 default: 568 case TUNER_XC5000: 569 dvb_attach(xc5000_attach, dvb->frontend, 570 &dev->i2c_adap, 571 &hauppauge_xc5000a_config); 572 break; 573 case TUNER_XC5000C: 574 dvb_attach(xc5000_attach, dvb->frontend, 575 &dev->i2c_adap, 576 &hauppauge_xc5000c_config); 577 break; 578 } 579 break; 580 case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL: 581 dvb->frontend = dvb_attach(au8522_attach, 582 &hauppauge_hvr950q_config, 583 &dev->i2c_adap); 584 if (dvb->frontend != NULL) 585 dvb_attach(mxl5007t_attach, dvb->frontend, 586 &dev->i2c_adap, 0x60, 587 &mxl5007t_hvr950q_config); 588 break; 589 case AU0828_BOARD_HAUPPAUGE_WOODBURY: 590 dvb->frontend = dvb_attach(au8522_attach, 591 &hauppauge_woodbury_config, 592 &dev->i2c_adap); 593 if (dvb->frontend != NULL) 594 dvb_attach(tda18271_attach, dvb->frontend, 595 0x60, &dev->i2c_adap, 596 &hauppauge_woodbury_tunerconfig); 597 break; 598 case AU0828_BOARD_DVICO_FUSIONHDTV7: 599 dvb->frontend = dvb_attach(au8522_attach, 600 &fusionhdtv7usb_config, 601 &dev->i2c_adap); 602 if (dvb->frontend != NULL) { 603 dvb_attach(xc5000_attach, dvb->frontend, 604 &dev->i2c_adap, 605 &hauppauge_xc5000a_config); 606 } 607 break; 608 default: 609 pr_warn("The frontend of your DVB/ATSC card isn't supported yet\n"); 610 break; 611 } 612 if (NULL == dvb->frontend) { 613 pr_err("%s() Frontend initialization failed\n", 614 __func__); 615 return -1; 616 } 617 /* define general-purpose callback pointer */ 618 dvb->frontend->callback = au0828_tuner_callback; 619 620 /* register everything */ 621 ret = dvb_register(dev); 622 if (ret < 0) { 623 if (dvb->frontend->ops.release) 624 dvb->frontend->ops.release(dvb->frontend); 625 dvb->frontend = NULL; 626 return ret; 627 } 628 629 return 0; 630 } 631 632 void au0828_dvb_suspend(struct au0828_dev *dev) 633 { 634 struct au0828_dvb *dvb = &dev->dvb; 635 int rc; 636 637 if (dvb->frontend) { 638 if (dev->urb_streaming) { 639 cancel_work_sync(&dev->restart_streaming); 640 /* Stop transport */ 641 mutex_lock(&dvb->lock); 642 stop_urb_transfer(dev); 643 au0828_stop_transport(dev, 1); 644 mutex_unlock(&dvb->lock); 645 dev->need_urb_start = true; 646 } 647 /* suspend frontend - does tuner and fe to sleep */ 648 rc = dvb_frontend_suspend(dvb->frontend); 649 pr_info("au0828_dvb_suspend(): Suspending DVB fe %d\n", rc); 650 } 651 } 652 653 void au0828_dvb_resume(struct au0828_dev *dev) 654 { 655 struct au0828_dvb *dvb = &dev->dvb; 656 int rc; 657 658 if (dvb->frontend) { 659 /* resume frontend - does fe and tuner init */ 660 rc = dvb_frontend_resume(dvb->frontend); 661 pr_info("au0828_dvb_resume(): Resuming DVB fe %d\n", rc); 662 if (dev->need_urb_start) { 663 /* Start transport */ 664 mutex_lock(&dvb->lock); 665 au0828_start_transport(dev); 666 start_urb_transfer(dev); 667 mutex_unlock(&dvb->lock); 668 } 669 } 670 } 671