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 <linux/module.h> 23 #include <linux/slab.h> 24 #include <linux/init.h> 25 #include <linux/device.h> 26 #include <linux/suspend.h> 27 #include <media/v4l2-common.h> 28 #include <media/tuner.h> 29 30 #include "au0828.h" 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 }; 92 93 static struct xc5000_config hauppauge_xc5000c_config = { 94 .i2c_address = 0x61, 95 .if_khz = 6000, 96 .chip_id = XC5000C, 97 }; 98 99 static struct mxl5007t_config mxl5007t_hvr950q_config = { 100 .xtal_freq_hz = MxL_XTAL_24_MHZ, 101 .if_freq_hz = MxL_IF_6_MHZ, 102 }; 103 104 static struct tda18271_config hauppauge_woodbury_tunerconfig = { 105 .gate = TDA18271_GATE_DIGITAL, 106 }; 107 108 static void au0828_restart_dvb_streaming(struct work_struct *work); 109 110 /*-------------------------------------------------------------------*/ 111 static 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 == 0) { 125 dprintk(2, "%s: not streaming!\n", __func__); 126 return; 127 } 128 129 if (ptype != PIPE_BULK) { 130 printk(KERN_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 } 155 156 static int stop_urb_transfer(struct au0828_dev *dev) 157 { 158 int i; 159 160 dprintk(2, "%s()\n", __func__); 161 162 dev->urb_streaming = 0; 163 for (i = 0; i < URB_COUNT; i++) { 164 if (dev->urbs[i]) { 165 usb_kill_urb(dev->urbs[i]); 166 if (!preallocate_big_buffers) 167 kfree(dev->urbs[i]->transfer_buffer); 168 169 usb_free_urb(dev->urbs[i]); 170 } 171 } 172 173 return 0; 174 } 175 176 static int start_urb_transfer(struct au0828_dev *dev) 177 { 178 struct urb *purb; 179 int i, ret = -ENOMEM; 180 181 dprintk(2, "%s()\n", __func__); 182 183 if (dev->urb_streaming) { 184 dprintk(2, "%s: bulk xfer already running!\n", __func__); 185 return 0; 186 } 187 188 for (i = 0; i < URB_COUNT; i++) { 189 190 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL); 191 if (!dev->urbs[i]) 192 goto err; 193 194 purb = dev->urbs[i]; 195 196 if (preallocate_big_buffers) 197 purb->transfer_buffer = dev->dig_transfer_buffer[i]; 198 else 199 purb->transfer_buffer = kzalloc(URB_BUFSIZE, 200 GFP_KERNEL); 201 202 if (!purb->transfer_buffer) { 203 usb_free_urb(purb); 204 dev->urbs[i] = NULL; 205 printk(KERN_ERR 206 "%s: failed big buffer allocation, err = %d\n", 207 __func__, ret); 208 goto err; 209 } 210 211 purb->status = -EINPROGRESS; 212 usb_fill_bulk_urb(purb, 213 dev->usbdev, 214 usb_rcvbulkpipe(dev->usbdev, 215 _AU0828_BULKPIPE), 216 purb->transfer_buffer, 217 URB_BUFSIZE, 218 urb_completion, 219 dev); 220 221 } 222 223 for (i = 0; i < URB_COUNT; i++) { 224 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC); 225 if (ret != 0) { 226 stop_urb_transfer(dev); 227 printk(KERN_ERR "%s: failed urb submission, " 228 "err = %d\n", __func__, ret); 229 return ret; 230 } 231 } 232 233 dev->urb_streaming = 1; 234 ret = 0; 235 236 err: 237 return ret; 238 } 239 240 static void au0828_start_transport(struct au0828_dev *dev) 241 { 242 au0828_write(dev, 0x608, 0x90); 243 au0828_write(dev, 0x609, 0x72); 244 au0828_write(dev, 0x60a, 0x71); 245 au0828_write(dev, 0x60b, 0x01); 246 247 } 248 249 static void au0828_stop_transport(struct au0828_dev *dev, int full_stop) 250 { 251 if (full_stop) { 252 au0828_write(dev, 0x608, 0x00); 253 au0828_write(dev, 0x609, 0x00); 254 au0828_write(dev, 0x60a, 0x00); 255 } 256 au0828_write(dev, 0x60b, 0x00); 257 } 258 259 static int au0828_dvb_start_feed(struct dvb_demux_feed *feed) 260 { 261 struct dvb_demux *demux = feed->demux; 262 struct au0828_dev *dev = (struct au0828_dev *) demux->priv; 263 struct au0828_dvb *dvb = &dev->dvb; 264 int ret = 0; 265 266 dprintk(1, "%s()\n", __func__); 267 268 if (!demux->dmx.frontend) 269 return -EINVAL; 270 271 if (dvb) { 272 mutex_lock(&dvb->lock); 273 dvb->start_count++; 274 dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__, 275 dvb->start_count, dvb->stop_count); 276 if (dvb->feeding++ == 0) { 277 /* Start transport */ 278 au0828_start_transport(dev); 279 ret = start_urb_transfer(dev); 280 if (ret < 0) { 281 au0828_stop_transport(dev, 0); 282 dvb->feeding--; /* We ran out of memory... */ 283 } 284 } 285 mutex_unlock(&dvb->lock); 286 } 287 288 return ret; 289 } 290 291 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed) 292 { 293 struct dvb_demux *demux = feed->demux; 294 struct au0828_dev *dev = (struct au0828_dev *) demux->priv; 295 struct au0828_dvb *dvb = &dev->dvb; 296 int ret = 0; 297 298 dprintk(1, "%s()\n", __func__); 299 300 if (dvb) { 301 cancel_work_sync(&dev->restart_streaming); 302 303 mutex_lock(&dvb->lock); 304 dvb->stop_count++; 305 dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__, 306 dvb->start_count, dvb->stop_count); 307 if (dvb->feeding > 0) { 308 dvb->feeding--; 309 if (dvb->feeding == 0) { 310 /* Stop transport */ 311 ret = stop_urb_transfer(dev); 312 au0828_stop_transport(dev, 0); 313 } 314 } 315 mutex_unlock(&dvb->lock); 316 } 317 318 return ret; 319 } 320 321 static void au0828_restart_dvb_streaming(struct work_struct *work) 322 { 323 struct au0828_dev *dev = container_of(work, struct au0828_dev, 324 restart_streaming); 325 struct au0828_dvb *dvb = &dev->dvb; 326 327 if (dev->urb_streaming == 0) 328 return; 329 330 dprintk(1, "Restarting streaming...!\n"); 331 332 mutex_lock(&dvb->lock); 333 334 /* Stop transport */ 335 stop_urb_transfer(dev); 336 au0828_stop_transport(dev, 1); 337 338 /* Start transport */ 339 au0828_start_transport(dev); 340 start_urb_transfer(dev); 341 342 mutex_unlock(&dvb->lock); 343 } 344 345 static int au0828_set_frontend(struct dvb_frontend *fe) 346 { 347 struct au0828_dev *dev = fe->dvb->priv; 348 struct au0828_dvb *dvb = &dev->dvb; 349 int ret, was_streaming; 350 351 mutex_lock(&dvb->lock); 352 was_streaming = dev->urb_streaming; 353 if (was_streaming) { 354 au0828_stop_transport(dev, 1); 355 356 /* 357 * We can't hold a mutex here, as the restart_streaming 358 * kthread may also hold it. 359 */ 360 mutex_unlock(&dvb->lock); 361 cancel_work_sync(&dev->restart_streaming); 362 mutex_lock(&dvb->lock); 363 364 stop_urb_transfer(dev); 365 } 366 mutex_unlock(&dvb->lock); 367 368 ret = dvb->set_frontend(fe); 369 370 if (was_streaming) { 371 mutex_lock(&dvb->lock); 372 au0828_start_transport(dev); 373 start_urb_transfer(dev); 374 mutex_unlock(&dvb->lock); 375 } 376 377 return ret; 378 } 379 380 static int dvb_register(struct au0828_dev *dev) 381 { 382 struct au0828_dvb *dvb = &dev->dvb; 383 int result; 384 385 dprintk(1, "%s()\n", __func__); 386 387 if (preallocate_big_buffers) { 388 int i; 389 for (i = 0; i < URB_COUNT; i++) { 390 dev->dig_transfer_buffer[i] = kzalloc(URB_BUFSIZE, 391 GFP_KERNEL); 392 393 if (!dev->dig_transfer_buffer[i]) { 394 result = -ENOMEM; 395 396 printk(KERN_ERR 397 "%s: failed buffer allocation (errno = %d)\n", 398 DRIVER_NAME, result); 399 goto fail_adapter; 400 } 401 } 402 } 403 404 INIT_WORK(&dev->restart_streaming, au0828_restart_dvb_streaming); 405 406 /* register adapter */ 407 result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE, 408 &dev->usbdev->dev, adapter_nr); 409 if (result < 0) { 410 printk(KERN_ERR "%s: dvb_register_adapter failed " 411 "(errno = %d)\n", DRIVER_NAME, result); 412 goto fail_adapter; 413 } 414 dvb->adapter.priv = dev; 415 416 /* register frontend */ 417 result = dvb_register_frontend(&dvb->adapter, dvb->frontend); 418 if (result < 0) { 419 printk(KERN_ERR "%s: dvb_register_frontend failed " 420 "(errno = %d)\n", DRIVER_NAME, result); 421 goto fail_frontend; 422 } 423 424 /* Hook dvb frontend */ 425 dvb->set_frontend = dvb->frontend->ops.set_frontend; 426 dvb->frontend->ops.set_frontend = au0828_set_frontend; 427 428 /* register demux stuff */ 429 dvb->demux.dmx.capabilities = 430 DMX_TS_FILTERING | DMX_SECTION_FILTERING | 431 DMX_MEMORY_BASED_FILTERING; 432 dvb->demux.priv = dev; 433 dvb->demux.filternum = 256; 434 dvb->demux.feednum = 256; 435 dvb->demux.start_feed = au0828_dvb_start_feed; 436 dvb->demux.stop_feed = au0828_dvb_stop_feed; 437 result = dvb_dmx_init(&dvb->demux); 438 if (result < 0) { 439 printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n", 440 DRIVER_NAME, result); 441 goto fail_dmx; 442 } 443 444 dvb->dmxdev.filternum = 256; 445 dvb->dmxdev.demux = &dvb->demux.dmx; 446 dvb->dmxdev.capabilities = 0; 447 result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter); 448 if (result < 0) { 449 printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n", 450 DRIVER_NAME, 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 printk(KERN_ERR "%s: add_frontend failed " 458 "(DMX_FRONTEND_0, errno = %d)\n", DRIVER_NAME, 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 printk(KERN_ERR "%s: add_frontend failed " 466 "(DMX_MEMORY_FE, errno = %d)\n", DRIVER_NAME, 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 printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n", 473 DRIVER_NAME, result); 474 goto fail_fe_conn; 475 } 476 477 /* register network adapter */ 478 dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); 479 480 dvb->start_count = 0; 481 dvb->stop_count = 0; 482 return 0; 483 484 fail_fe_conn: 485 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); 486 fail_fe_mem: 487 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); 488 fail_fe_hw: 489 dvb_dmxdev_release(&dvb->dmxdev); 490 fail_dmxdev: 491 dvb_dmx_release(&dvb->demux); 492 fail_dmx: 493 dvb_unregister_frontend(dvb->frontend); 494 fail_frontend: 495 dvb_frontend_detach(dvb->frontend); 496 dvb_unregister_adapter(&dvb->adapter); 497 fail_adapter: 498 499 if (preallocate_big_buffers) { 500 int i; 501 for (i = 0; i < URB_COUNT; i++) 502 kfree(dev->dig_transfer_buffer[i]); 503 } 504 505 return result; 506 } 507 508 void au0828_dvb_unregister(struct au0828_dev *dev) 509 { 510 struct au0828_dvb *dvb = &dev->dvb; 511 512 dprintk(1, "%s()\n", __func__); 513 514 if (dvb->frontend == NULL) 515 return; 516 517 cancel_work_sync(&dev->restart_streaming); 518 519 dvb_net_release(&dvb->net); 520 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); 521 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); 522 dvb_dmxdev_release(&dvb->dmxdev); 523 dvb_dmx_release(&dvb->demux); 524 dvb_unregister_frontend(dvb->frontend); 525 dvb_frontend_detach(dvb->frontend); 526 dvb_unregister_adapter(&dvb->adapter); 527 528 if (preallocate_big_buffers) { 529 int i; 530 for (i = 0; i < URB_COUNT; i++) 531 kfree(dev->dig_transfer_buffer[i]); 532 } 533 534 535 } 536 537 /* All the DVB attach calls go here, this function get's modified 538 * for each new card. No other function in this file needs 539 * to change. 540 */ 541 int au0828_dvb_register(struct au0828_dev *dev) 542 { 543 struct au0828_dvb *dvb = &dev->dvb; 544 int ret; 545 546 dprintk(1, "%s()\n", __func__); 547 548 /* init frontend */ 549 switch (dev->boardnr) { 550 case AU0828_BOARD_HAUPPAUGE_HVR850: 551 case AU0828_BOARD_HAUPPAUGE_HVR950Q: 552 dvb->frontend = dvb_attach(au8522_attach, 553 &hauppauge_hvr950q_config, 554 &dev->i2c_adap); 555 if (dvb->frontend != NULL) 556 switch (dev->board.tuner_type) { 557 default: 558 case TUNER_XC5000: 559 dvb_attach(xc5000_attach, dvb->frontend, 560 &dev->i2c_adap, 561 &hauppauge_xc5000a_config); 562 break; 563 case TUNER_XC5000C: 564 dvb_attach(xc5000_attach, dvb->frontend, 565 &dev->i2c_adap, 566 &hauppauge_xc5000c_config); 567 break; 568 } 569 break; 570 case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL: 571 dvb->frontend = dvb_attach(au8522_attach, 572 &hauppauge_hvr950q_config, 573 &dev->i2c_adap); 574 if (dvb->frontend != NULL) 575 dvb_attach(mxl5007t_attach, dvb->frontend, 576 &dev->i2c_adap, 0x60, 577 &mxl5007t_hvr950q_config); 578 break; 579 case AU0828_BOARD_HAUPPAUGE_WOODBURY: 580 dvb->frontend = dvb_attach(au8522_attach, 581 &hauppauge_woodbury_config, 582 &dev->i2c_adap); 583 if (dvb->frontend != NULL) 584 dvb_attach(tda18271_attach, dvb->frontend, 585 0x60, &dev->i2c_adap, 586 &hauppauge_woodbury_tunerconfig); 587 break; 588 case AU0828_BOARD_DVICO_FUSIONHDTV7: 589 dvb->frontend = dvb_attach(au8522_attach, 590 &fusionhdtv7usb_config, 591 &dev->i2c_adap); 592 if (dvb->frontend != NULL) { 593 dvb_attach(xc5000_attach, dvb->frontend, 594 &dev->i2c_adap, 595 &hauppauge_xc5000a_config); 596 } 597 break; 598 default: 599 printk(KERN_WARNING "The frontend of your DVB/ATSC card " 600 "isn't supported yet\n"); 601 break; 602 } 603 if (NULL == dvb->frontend) { 604 printk(KERN_ERR "%s() Frontend initialization failed\n", 605 __func__); 606 return -1; 607 } 608 /* define general-purpose callback pointer */ 609 dvb->frontend->callback = au0828_tuner_callback; 610 611 /* register everything */ 612 ret = dvb_register(dev); 613 if (ret < 0) { 614 if (dvb->frontend->ops.release) 615 dvb->frontend->ops.release(dvb->frontend); 616 return ret; 617 } 618 619 return 0; 620 } 621