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 36static int preallocate_big_buffers; 37module_param_named(preallocate_big_buffers, preallocate_big_buffers, int, 0644); 38MODULE_PARM_DESC(preallocate_big_buffers, "Preallocate the larger transfer buffers at module load time"); 39 40DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 41 42#define _AU0828_BULKPIPE 0x83 43#define _BULKPIPESIZE 0xe522 44 45static u8 hauppauge_hvr950q_led_states[] = { 46 0x00, /* off */ 47 0x02, /* yellow */ 48 0x04, /* green */ 49}; 50 51static 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 65static 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 73static 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 80static 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 87static struct xc5000_config hauppauge_xc5000a_config = { 88 .i2c_address = 0x61, 89 .if_khz = 6000, 90 .chip_id = XC5000A, 91}; 92 93static struct xc5000_config hauppauge_xc5000c_config = { 94 .i2c_address = 0x61, 95 .if_khz = 6000, 96 .chip_id = XC5000C, 97}; 98 99static struct mxl5007t_config mxl5007t_hvr950q_config = { 100 .xtal_freq_hz = MxL_XTAL_24_MHZ, 101 .if_freq_hz = MxL_IF_6_MHZ, 102}; 103 104static struct tda18271_config hauppauge_woodbury_tunerconfig = { 105 .gate = TDA18271_GATE_DIGITAL, 106}; 107 108static void au0828_restart_dvb_streaming(struct work_struct *work); 109 110/*-------------------------------------------------------------------*/ 111static void urb_completion(struct urb *purb) 112{ 113 struct au0828_dev *dev = purb->context; 114 int ptype = usb_pipetype(purb->pipe); 115 unsigned char *ptr; 116 117 dprintk(2, "%s: %d\n", __func__, purb->actual_length); 118 119 if (!dev) { 120 dprintk(2, "%s: no dev!\n", __func__); 121 return; 122 } 123 124 if (!dev->urb_streaming) { 125 dprintk(2, "%s: not streaming!\n", __func__); 126 return; 127 } 128 129 if (ptype != PIPE_BULK) { 130 pr_err("%s: Unsupported URB type %d\n", 131 __func__, ptype); 132 return; 133 } 134 135 /* See if the stream is corrupted (to work around a hardware 136 bug where the stream gets misaligned */ 137 ptr = purb->transfer_buffer; 138 if (purb->actual_length > 0 && ptr[0] != 0x47) { 139 dprintk(1, "Need to restart streaming %02x len=%d!\n", 140 ptr[0], purb->actual_length); 141 schedule_work(&dev->restart_streaming); 142 return; 143 } 144 145 /* Feed the transport payload into the kernel demux */ 146 dvb_dmx_swfilter_packets(&dev->dvb.demux, 147 purb->transfer_buffer, purb->actual_length / 188); 148 149 /* Clean the buffer before we requeue */ 150 memset(purb->transfer_buffer, 0, URB_BUFSIZE); 151 152 /* Requeue URB */ 153 usb_submit_urb(purb, GFP_ATOMIC); 154} 155 156static int stop_urb_transfer(struct au0828_dev *dev) 157{ 158 int i; 159 160 dprintk(2, "%s()\n", __func__); 161 162 if (!dev->urb_streaming) 163 return 0; 164 165 dev->urb_streaming = false; 166 for (i = 0; i < URB_COUNT; i++) { 167 if (dev->urbs[i]) { 168 usb_kill_urb(dev->urbs[i]); 169 if (!preallocate_big_buffers) 170 kfree(dev->urbs[i]->transfer_buffer); 171 172 usb_free_urb(dev->urbs[i]); 173 } 174 } 175 176 return 0; 177} 178 179static int start_urb_transfer(struct au0828_dev *dev) 180{ 181 struct urb *purb; 182 int i, ret = -ENOMEM; 183 184 dprintk(2, "%s()\n", __func__); 185 186 if (dev->urb_streaming) { 187 dprintk(2, "%s: bulk xfer already running!\n", __func__); 188 return 0; 189 } 190 191 for (i = 0; i < URB_COUNT; i++) { 192 193 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL); 194 if (!dev->urbs[i]) 195 goto err; 196 197 purb = dev->urbs[i]; 198 199 if (preallocate_big_buffers) 200 purb->transfer_buffer = dev->dig_transfer_buffer[i]; 201 else 202 purb->transfer_buffer = kzalloc(URB_BUFSIZE, 203 GFP_KERNEL); 204 205 if (!purb->transfer_buffer) { 206 usb_free_urb(purb); 207 dev->urbs[i] = NULL; 208 pr_err("%s: failed big buffer allocation, err = %d\n", 209 __func__, ret); 210 goto err; 211 } 212 213 purb->status = -EINPROGRESS; 214 usb_fill_bulk_urb(purb, 215 dev->usbdev, 216 usb_rcvbulkpipe(dev->usbdev, 217 _AU0828_BULKPIPE), 218 purb->transfer_buffer, 219 URB_BUFSIZE, 220 urb_completion, 221 dev); 222 223 } 224 225 for (i = 0; i < URB_COUNT; i++) { 226 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC); 227 if (ret != 0) { 228 stop_urb_transfer(dev); 229 pr_err("%s: failed urb submission, err = %d\n", 230 __func__, ret); 231 return ret; 232 } 233 } 234 235 dev->urb_streaming = true; 236 ret = 0; 237 238err: 239 return ret; 240} 241 242static 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 251static 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 261static 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 293static 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 323static 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 347static 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 382static 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 dvb->adapter.priv = dev; 417 418 /* register frontend */ 419 result = dvb_register_frontend(&dvb->adapter, dvb->frontend); 420 if (result < 0) { 421 pr_err("dvb_register_frontend failed (errno = %d)\n", 422 result); 423 goto fail_frontend; 424 } 425 426 /* Hook dvb frontend */ 427 dvb->set_frontend = dvb->frontend->ops.set_frontend; 428 dvb->frontend->ops.set_frontend = au0828_set_frontend; 429 430 /* register demux stuff */ 431 dvb->demux.dmx.capabilities = 432 DMX_TS_FILTERING | DMX_SECTION_FILTERING | 433 DMX_MEMORY_BASED_FILTERING; 434 dvb->demux.priv = dev; 435 dvb->demux.filternum = 256; 436 dvb->demux.feednum = 256; 437 dvb->demux.start_feed = au0828_dvb_start_feed; 438 dvb->demux.stop_feed = au0828_dvb_stop_feed; 439 result = dvb_dmx_init(&dvb->demux); 440 if (result < 0) { 441 pr_err("dvb_dmx_init failed (errno = %d)\n", result); 442 goto fail_dmx; 443 } 444 445 dvb->dmxdev.filternum = 256; 446 dvb->dmxdev.demux = &dvb->demux.dmx; 447 dvb->dmxdev.capabilities = 0; 448 result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter); 449 if (result < 0) { 450 pr_err("dvb_dmxdev_init failed (errno = %d)\n", result); 451 goto fail_dmxdev; 452 } 453 454 dvb->fe_hw.source = DMX_FRONTEND_0; 455 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw); 456 if (result < 0) { 457 pr_err("add_frontend failed (DMX_FRONTEND_0, errno = %d)\n", 458 result); 459 goto fail_fe_hw; 460 } 461 462 dvb->fe_mem.source = DMX_MEMORY_FE; 463 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem); 464 if (result < 0) { 465 pr_err("add_frontend failed (DMX_MEMORY_FE, errno = %d)\n", 466 result); 467 goto fail_fe_mem; 468 } 469 470 result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw); 471 if (result < 0) { 472 pr_err("connect_frontend failed (errno = %d)\n", result); 473 goto fail_fe_conn; 474 } 475 476 /* register network adapter */ 477 dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); 478 479 dvb->start_count = 0; 480 dvb->stop_count = 0; 481 return 0; 482 483fail_fe_conn: 484 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); 485fail_fe_mem: 486 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); 487fail_fe_hw: 488 dvb_dmxdev_release(&dvb->dmxdev); 489fail_dmxdev: 490 dvb_dmx_release(&dvb->demux); 491fail_dmx: 492 dvb_unregister_frontend(dvb->frontend); 493fail_frontend: 494 dvb_frontend_detach(dvb->frontend); 495 dvb_unregister_adapter(&dvb->adapter); 496fail_adapter: 497 498 if (preallocate_big_buffers) { 499 int i; 500 for (i = 0; i < URB_COUNT; i++) 501 kfree(dev->dig_transfer_buffer[i]); 502 } 503 504 return result; 505} 506 507void au0828_dvb_unregister(struct au0828_dev *dev) 508{ 509 struct au0828_dvb *dvb = &dev->dvb; 510 511 dprintk(1, "%s()\n", __func__); 512 513 if (dvb->frontend == NULL) 514 return; 515 516 cancel_work_sync(&dev->restart_streaming); 517 518 dvb_net_release(&dvb->net); 519 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); 520 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); 521 dvb_dmxdev_release(&dvb->dmxdev); 522 dvb_dmx_release(&dvb->demux); 523 dvb_unregister_frontend(dvb->frontend); 524 dvb_frontend_detach(dvb->frontend); 525 dvb_unregister_adapter(&dvb->adapter); 526 527 if (preallocate_big_buffers) { 528 int i; 529 for (i = 0; i < URB_COUNT; i++) 530 kfree(dev->dig_transfer_buffer[i]); 531 } 532 dvb->frontend = NULL; 533} 534 535/* All the DVB attach calls go here, this function get's modified 536 * for each new card. No other function in this file needs 537 * to change. 538 */ 539int au0828_dvb_register(struct au0828_dev *dev) 540{ 541 struct au0828_dvb *dvb = &dev->dvb; 542 int ret; 543 544 dprintk(1, "%s()\n", __func__); 545 546 /* init frontend */ 547 switch (dev->boardnr) { 548 case AU0828_BOARD_HAUPPAUGE_HVR850: 549 case AU0828_BOARD_HAUPPAUGE_HVR950Q: 550 dvb->frontend = dvb_attach(au8522_attach, 551 &hauppauge_hvr950q_config, 552 &dev->i2c_adap); 553 if (dvb->frontend != NULL) 554 switch (dev->board.tuner_type) { 555 default: 556 case TUNER_XC5000: 557 dvb_attach(xc5000_attach, dvb->frontend, 558 &dev->i2c_adap, 559 &hauppauge_xc5000a_config); 560 break; 561 case TUNER_XC5000C: 562 dvb_attach(xc5000_attach, dvb->frontend, 563 &dev->i2c_adap, 564 &hauppauge_xc5000c_config); 565 break; 566 } 567 break; 568 case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL: 569 dvb->frontend = dvb_attach(au8522_attach, 570 &hauppauge_hvr950q_config, 571 &dev->i2c_adap); 572 if (dvb->frontend != NULL) 573 dvb_attach(mxl5007t_attach, dvb->frontend, 574 &dev->i2c_adap, 0x60, 575 &mxl5007t_hvr950q_config); 576 break; 577 case AU0828_BOARD_HAUPPAUGE_WOODBURY: 578 dvb->frontend = dvb_attach(au8522_attach, 579 &hauppauge_woodbury_config, 580 &dev->i2c_adap); 581 if (dvb->frontend != NULL) 582 dvb_attach(tda18271_attach, dvb->frontend, 583 0x60, &dev->i2c_adap, 584 &hauppauge_woodbury_tunerconfig); 585 break; 586 case AU0828_BOARD_DVICO_FUSIONHDTV7: 587 dvb->frontend = dvb_attach(au8522_attach, 588 &fusionhdtv7usb_config, 589 &dev->i2c_adap); 590 if (dvb->frontend != NULL) { 591 dvb_attach(xc5000_attach, dvb->frontend, 592 &dev->i2c_adap, 593 &hauppauge_xc5000a_config); 594 } 595 break; 596 default: 597 pr_warn("The frontend of your DVB/ATSC card isn't supported yet\n"); 598 break; 599 } 600 if (NULL == dvb->frontend) { 601 pr_err("%s() Frontend initialization failed\n", 602 __func__); 603 return -1; 604 } 605 /* define general-purpose callback pointer */ 606 dvb->frontend->callback = au0828_tuner_callback; 607 608 /* register everything */ 609 ret = dvb_register(dev); 610 if (ret < 0) { 611 if (dvb->frontend->ops.release) 612 dvb->frontend->ops.release(dvb->frontend); 613 dvb->frontend = NULL; 614 return ret; 615 } 616 617 return 0; 618} 619 620void au0828_dvb_suspend(struct au0828_dev *dev) 621{ 622 struct au0828_dvb *dvb = &dev->dvb; 623 int rc; 624 625 if (dvb->frontend) { 626 if (dev->urb_streaming) { 627 cancel_work_sync(&dev->restart_streaming); 628 /* Stop transport */ 629 mutex_lock(&dvb->lock); 630 stop_urb_transfer(dev); 631 au0828_stop_transport(dev, 1); 632 mutex_unlock(&dvb->lock); 633 dev->need_urb_start = true; 634 } 635 /* suspend frontend - does tuner and fe to sleep */ 636 rc = dvb_frontend_suspend(dvb->frontend); 637 pr_info("au0828_dvb_suspend(): Suspending DVB fe %d\n", rc); 638 } 639} 640 641void au0828_dvb_resume(struct au0828_dev *dev) 642{ 643 struct au0828_dvb *dvb = &dev->dvb; 644 int rc; 645 646 if (dvb->frontend) { 647 /* resume frontend - does fe and tuner init */ 648 rc = dvb_frontend_resume(dvb->frontend); 649 pr_info("au0828_dvb_resume(): Resuming DVB fe %d\n", rc); 650 if (dev->need_urb_start) { 651 /* Start transport */ 652 mutex_lock(&dvb->lock); 653 au0828_start_transport(dev); 654 start_urb_transfer(dev); 655 mutex_unlock(&dvb->lock); 656 } 657 } 658} 659