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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Driver for the Auvitek USB bridge4 *5 * Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>6 */7 8#include "au0828.h"9 10#include <linux/module.h>11#include <linux/slab.h>12#include <linux/init.h>13#include <linux/device.h>14#include <media/v4l2-common.h>15#include <media/tuner.h>16 17#include "au8522.h"18#include "xc5000.h"19#include "mxl5007t.h"20#include "tda18271.h"21 22static int preallocate_big_buffers;23module_param_named(preallocate_big_buffers, preallocate_big_buffers, int, 0644);24MODULE_PARM_DESC(preallocate_big_buffers, "Preallocate the larger transfer buffers at module load time");25 26DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);27 28#define _AU0828_BULKPIPE 0x8329#define _BULKPIPESIZE 0xe52230 31static u8 hauppauge_hvr950q_led_states[] = {32 0x00, /* off */33 0x02, /* yellow */34 0x04, /* green */35};36 37static struct au8522_led_config hauppauge_hvr950q_led_cfg = {38 .gpio_output = 0x00e0,39 .gpio_output_enable = 0x6006,40 .gpio_output_disable = 0x0660,41 42 .gpio_leds = 0x00e2,43 .led_states = hauppauge_hvr950q_led_states,44 .num_led_states = sizeof(hauppauge_hvr950q_led_states),45 46 .vsb8_strong = 20 /* dB */ * 10,47 .qam64_strong = 25 /* dB */ * 10,48 .qam256_strong = 32 /* dB */ * 10,49};50 51static struct au8522_config hauppauge_hvr950q_config = {52 .demod_address = 0x8e >> 1,53 .status_mode = AU8522_DEMODLOCKING,54 .qam_if = AU8522_IF_6MHZ,55 .vsb_if = AU8522_IF_6MHZ,56 .led_cfg = &hauppauge_hvr950q_led_cfg,57};58 59static struct au8522_config fusionhdtv7usb_config = {60 .demod_address = 0x8e >> 1,61 .status_mode = AU8522_DEMODLOCKING,62 .qam_if = AU8522_IF_6MHZ,63 .vsb_if = AU8522_IF_6MHZ,64};65 66static struct au8522_config hauppauge_woodbury_config = {67 .demod_address = 0x8e >> 1,68 .status_mode = AU8522_DEMODLOCKING,69 .qam_if = AU8522_IF_4MHZ,70 .vsb_if = AU8522_IF_3_25MHZ,71};72 73static struct xc5000_config hauppauge_xc5000a_config = {74 .i2c_address = 0x61,75 .if_khz = 6000,76 .chip_id = XC5000A,77 .output_amp = 0x8f,78};79 80static struct xc5000_config hauppauge_xc5000c_config = {81 .i2c_address = 0x61,82 .if_khz = 6000,83 .chip_id = XC5000C,84 .output_amp = 0x8f,85};86 87static struct mxl5007t_config mxl5007t_hvr950q_config = {88 .xtal_freq_hz = MxL_XTAL_24_MHZ,89 .if_freq_hz = MxL_IF_6_MHZ,90};91 92static struct tda18271_config hauppauge_woodbury_tunerconfig = {93 .gate = TDA18271_GATE_DIGITAL,94};95 96static void au0828_restart_dvb_streaming(struct work_struct *work);97 98static void au0828_bulk_timeout(struct timer_list *t)99{100 struct au0828_dev *dev = from_timer(dev, t, bulk_timeout);101 102 dprintk(1, "%s called\n", __func__);103 dev->bulk_timeout_running = 0;104 schedule_work(&dev->restart_streaming);105}106 107/*-------------------------------------------------------------------*/108static void urb_completion(struct urb *purb)109{110 struct au0828_dev *dev = purb->context;111 int ptype = usb_pipetype(purb->pipe);112 unsigned char *ptr;113 114 dprintk(2, "%s: %d\n", __func__, purb->actual_length);115 116 if (!dev) {117 dprintk(2, "%s: no dev!\n", __func__);118 return;119 }120 121 if (!dev->urb_streaming) {122 dprintk(2, "%s: not streaming!\n", __func__);123 return;124 }125 126 if (ptype != PIPE_BULK) {127 pr_err("%s: Unsupported URB type %d\n",128 __func__, ptype);129 return;130 }131 132 /* See if the stream is corrupted (to work around a hardware133 bug where the stream gets misaligned */134 ptr = purb->transfer_buffer;135 if (purb->actual_length > 0 && ptr[0] != 0x47) {136 dprintk(1, "Need to restart streaming %02x len=%d!\n",137 ptr[0], purb->actual_length);138 schedule_work(&dev->restart_streaming);139 return;140 } else if (dev->bulk_timeout_running == 1) {141 /* The URB handler has fired, so cancel timer which would142 * restart endpoint if we hadn't143 */144 dprintk(1, "%s cancelling bulk timeout\n", __func__);145 dev->bulk_timeout_running = 0;146 del_timer(&dev->bulk_timeout);147 }148 149 /* Feed the transport payload into the kernel demux */150 dvb_dmx_swfilter_packets(&dev->dvb.demux,151 purb->transfer_buffer, purb->actual_length / 188);152 153 /* Clean the buffer before we requeue */154 memset(purb->transfer_buffer, 0, URB_BUFSIZE);155 156 /* Requeue URB */157 usb_submit_urb(purb, GFP_ATOMIC);158}159 160static int stop_urb_transfer(struct au0828_dev *dev)161{162 int i;163 164 dprintk(2, "%s()\n", __func__);165 166 if (!dev->urb_streaming)167 return 0;168 169 if (dev->bulk_timeout_running == 1) {170 dev->bulk_timeout_running = 0;171 del_timer(&dev->bulk_timeout);172 }173 174 dev->urb_streaming = false;175 for (i = 0; i < URB_COUNT; i++) {176 if (dev->urbs[i]) {177 usb_kill_urb(dev->urbs[i]);178 if (!preallocate_big_buffers)179 kfree(dev->urbs[i]->transfer_buffer);180 181 usb_free_urb(dev->urbs[i]);182 }183 }184 185 return 0;186}187 188static int start_urb_transfer(struct au0828_dev *dev)189{190 struct urb *purb;191 int i, ret;192 193 dprintk(2, "%s()\n", __func__);194 195 if (dev->urb_streaming) {196 dprintk(2, "%s: bulk xfer already running!\n", __func__);197 return 0;198 }199 200 for (i = 0; i < URB_COUNT; i++) {201 202 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);203 if (!dev->urbs[i])204 return -ENOMEM;205 206 purb = dev->urbs[i];207 208 if (preallocate_big_buffers)209 purb->transfer_buffer = dev->dig_transfer_buffer[i];210 else211 purb->transfer_buffer = kzalloc(URB_BUFSIZE,212 GFP_KERNEL);213 214 if (!purb->transfer_buffer) {215 usb_free_urb(purb);216 dev->urbs[i] = NULL;217 ret = -ENOMEM;218 pr_err("%s: failed big buffer allocation, err = %d\n",219 __func__, ret);220 return ret;221 }222 223 purb->status = -EINPROGRESS;224 usb_fill_bulk_urb(purb,225 dev->usbdev,226 usb_rcvbulkpipe(dev->usbdev,227 _AU0828_BULKPIPE),228 purb->transfer_buffer,229 URB_BUFSIZE,230 urb_completion,231 dev);232 233 }234 235 for (i = 0; i < URB_COUNT; i++) {236 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);237 if (ret != 0) {238 stop_urb_transfer(dev);239 pr_err("%s: failed urb submission, err = %d\n",240 __func__, ret);241 return ret;242 }243 }244 245 dev->urb_streaming = true;246 247 /* If we don't valid data within 1 second, restart stream */248 mod_timer(&dev->bulk_timeout, jiffies + (HZ));249 dev->bulk_timeout_running = 1;250 251 return 0;252}253 254static void au0828_start_transport(struct au0828_dev *dev)255{256 au0828_write(dev, 0x608, 0x90);257 au0828_write(dev, 0x609, 0x72);258 au0828_write(dev, 0x60a, 0x71);259 au0828_write(dev, 0x60b, 0x01);260 261}262 263static void au0828_stop_transport(struct au0828_dev *dev, int full_stop)264{265 if (full_stop) {266 au0828_write(dev, 0x608, 0x00);267 au0828_write(dev, 0x609, 0x00);268 au0828_write(dev, 0x60a, 0x00);269 }270 au0828_write(dev, 0x60b, 0x00);271}272 273static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)274{275 struct dvb_demux *demux = feed->demux;276 struct au0828_dev *dev = demux->priv;277 struct au0828_dvb *dvb = &dev->dvb;278 int ret = 0;279 280 dprintk(1, "%s()\n", __func__);281 282 if (!demux->dmx.frontend)283 return -EINVAL;284 285 if (dvb->frontend) {286 mutex_lock(&dvb->lock);287 dvb->start_count++;288 dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__,289 dvb->start_count, dvb->stop_count);290 if (dvb->feeding++ == 0) {291 /* Start transport */292 au0828_start_transport(dev);293 ret = start_urb_transfer(dev);294 if (ret < 0) {295 au0828_stop_transport(dev, 0);296 dvb->feeding--; /* We ran out of memory... */297 }298 }299 mutex_unlock(&dvb->lock);300 }301 302 return ret;303}304 305static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)306{307 struct dvb_demux *demux = feed->demux;308 struct au0828_dev *dev = demux->priv;309 struct au0828_dvb *dvb = &dev->dvb;310 int ret = 0;311 312 dprintk(1, "%s()\n", __func__);313 314 if (dvb->frontend) {315 cancel_work_sync(&dev->restart_streaming);316 317 mutex_lock(&dvb->lock);318 dvb->stop_count++;319 dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__,320 dvb->start_count, dvb->stop_count);321 if (dvb->feeding > 0) {322 dvb->feeding--;323 if (dvb->feeding == 0) {324 /* Stop transport */325 ret = stop_urb_transfer(dev);326 au0828_stop_transport(dev, 0);327 }328 }329 mutex_unlock(&dvb->lock);330 }331 332 return ret;333}334 335static void au0828_restart_dvb_streaming(struct work_struct *work)336{337 struct au0828_dev *dev = container_of(work, struct au0828_dev,338 restart_streaming);339 struct au0828_dvb *dvb = &dev->dvb;340 341 if (!dev->urb_streaming)342 return;343 344 dprintk(1, "Restarting streaming...!\n");345 346 mutex_lock(&dvb->lock);347 348 /* Stop transport */349 stop_urb_transfer(dev);350 au0828_stop_transport(dev, 1);351 352 /* Start transport */353 au0828_start_transport(dev);354 start_urb_transfer(dev);355 356 mutex_unlock(&dvb->lock);357}358 359static int au0828_set_frontend(struct dvb_frontend *fe)360{361 struct au0828_dev *dev = fe->dvb->priv;362 struct au0828_dvb *dvb = &dev->dvb;363 int ret, was_streaming;364 365 mutex_lock(&dvb->lock);366 was_streaming = dev->urb_streaming;367 if (was_streaming) {368 au0828_stop_transport(dev, 1);369 370 /*371 * We can't hold a mutex here, as the restart_streaming372 * kthread may also hold it.373 */374 mutex_unlock(&dvb->lock);375 cancel_work_sync(&dev->restart_streaming);376 mutex_lock(&dvb->lock);377 378 stop_urb_transfer(dev);379 }380 mutex_unlock(&dvb->lock);381 382 ret = dvb->set_frontend(fe);383 384 if (was_streaming) {385 mutex_lock(&dvb->lock);386 au0828_start_transport(dev);387 start_urb_transfer(dev);388 mutex_unlock(&dvb->lock);389 }390 391 return ret;392}393 394static int dvb_register(struct au0828_dev *dev)395{396 struct au0828_dvb *dvb = &dev->dvb;397 int result;398 399 dprintk(1, "%s()\n", __func__);400 401 if (preallocate_big_buffers) {402 int i;403 for (i = 0; i < URB_COUNT; i++) {404 dev->dig_transfer_buffer[i] = kzalloc(URB_BUFSIZE,405 GFP_KERNEL);406 407 if (!dev->dig_transfer_buffer[i]) {408 result = -ENOMEM;409 410 pr_err("failed buffer allocation (errno = %d)\n",411 result);412 goto fail_adapter;413 }414 }415 }416 417 INIT_WORK(&dev->restart_streaming, au0828_restart_dvb_streaming);418 419 /* register adapter */420 result = dvb_register_adapter(&dvb->adapter,421 KBUILD_MODNAME, THIS_MODULE,422 &dev->usbdev->dev, adapter_nr);423 if (result < 0) {424 pr_err("dvb_register_adapter failed (errno = %d)\n",425 result);426 goto fail_adapter;427 }428 429#ifdef CONFIG_MEDIA_CONTROLLER_DVB430 dvb->adapter.mdev = dev->media_dev;431#endif432 433 dvb->adapter.priv = dev;434 435 /* register frontend */436 result = dvb_register_frontend(&dvb->adapter, dvb->frontend);437 if (result < 0) {438 pr_err("dvb_register_frontend failed (errno = %d)\n",439 result);440 goto fail_frontend;441 }442 443 /* Hook dvb frontend */444 dvb->set_frontend = dvb->frontend->ops.set_frontend;445 dvb->frontend->ops.set_frontend = au0828_set_frontend;446 447 /* register demux stuff */448 dvb->demux.dmx.capabilities =449 DMX_TS_FILTERING | DMX_SECTION_FILTERING |450 DMX_MEMORY_BASED_FILTERING;451 dvb->demux.priv = dev;452 dvb->demux.filternum = 256;453 dvb->demux.feednum = 256;454 dvb->demux.start_feed = au0828_dvb_start_feed;455 dvb->demux.stop_feed = au0828_dvb_stop_feed;456 result = dvb_dmx_init(&dvb->demux);457 if (result < 0) {458 pr_err("dvb_dmx_init failed (errno = %d)\n", result);459 goto fail_dmx;460 }461 462 dvb->dmxdev.filternum = 256;463 dvb->dmxdev.demux = &dvb->demux.dmx;464 dvb->dmxdev.capabilities = 0;465 result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);466 if (result < 0) {467 pr_err("dvb_dmxdev_init failed (errno = %d)\n", result);468 goto fail_dmxdev;469 }470 471 dvb->fe_hw.source = DMX_FRONTEND_0;472 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);473 if (result < 0) {474 pr_err("add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",475 result);476 goto fail_fe_hw;477 }478 479 dvb->fe_mem.source = DMX_MEMORY_FE;480 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);481 if (result < 0) {482 pr_err("add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",483 result);484 goto fail_fe_mem;485 }486 487 result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);488 if (result < 0) {489 pr_err("connect_frontend failed (errno = %d)\n", result);490 goto fail_fe_conn;491 }492 493 /* register network adapter */494 dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);495 496 dvb->start_count = 0;497 dvb->stop_count = 0;498 499 result = dvb_create_media_graph(&dvb->adapter, false);500 if (result < 0)501 goto fail_create_graph;502 503 return 0;504 505fail_create_graph:506 dvb_net_release(&dvb->net);507fail_fe_conn:508 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);509fail_fe_mem:510 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);511fail_fe_hw:512 dvb_dmxdev_release(&dvb->dmxdev);513fail_dmxdev:514 dvb_dmx_release(&dvb->demux);515fail_dmx:516 dvb_unregister_frontend(dvb->frontend);517fail_frontend:518 dvb_frontend_detach(dvb->frontend);519 dvb_unregister_adapter(&dvb->adapter);520fail_adapter:521 522 if (preallocate_big_buffers) {523 int i;524 for (i = 0; i < URB_COUNT; i++)525 kfree(dev->dig_transfer_buffer[i]);526 }527 528 return result;529}530 531void au0828_dvb_unregister(struct au0828_dev *dev)532{533 struct au0828_dvb *dvb = &dev->dvb;534 535 dprintk(1, "%s()\n", __func__);536 537 if (dvb->frontend == NULL)538 return;539 540 cancel_work_sync(&dev->restart_streaming);541 542 dvb_net_release(&dvb->net);543 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);544 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);545 dvb_dmxdev_release(&dvb->dmxdev);546 dvb_dmx_release(&dvb->demux);547 dvb_unregister_frontend(dvb->frontend);548 dvb_frontend_detach(dvb->frontend);549 dvb_unregister_adapter(&dvb->adapter);550 551 if (preallocate_big_buffers) {552 int i;553 for (i = 0; i < URB_COUNT; i++)554 kfree(dev->dig_transfer_buffer[i]);555 }556 dvb->frontend = NULL;557}558 559/* All the DVB attach calls go here, this function gets modified560 * for each new card. No other function in this file needs561 * to change.562 */563int au0828_dvb_register(struct au0828_dev *dev)564{565 struct au0828_dvb *dvb = &dev->dvb;566 int ret;567 568 dprintk(1, "%s()\n", __func__);569 570 /* init frontend */571 switch (dev->boardnr) {572 case AU0828_BOARD_HAUPPAUGE_HVR850:573 case AU0828_BOARD_HAUPPAUGE_HVR950Q:574 dvb->frontend = dvb_attach(au8522_attach,575 &hauppauge_hvr950q_config,576 &dev->i2c_adap);577 if (dvb->frontend != NULL)578 switch (dev->board.tuner_type) {579 default:580 case TUNER_XC5000:581 dvb_attach(xc5000_attach, dvb->frontend,582 &dev->i2c_adap,583 &hauppauge_xc5000a_config);584 break;585 case TUNER_XC5000C:586 dvb_attach(xc5000_attach, dvb->frontend,587 &dev->i2c_adap,588 &hauppauge_xc5000c_config);589 break;590 }591 break;592 case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:593 dvb->frontend = dvb_attach(au8522_attach,594 &hauppauge_hvr950q_config,595 &dev->i2c_adap);596 if (dvb->frontend != NULL)597 dvb_attach(mxl5007t_attach, dvb->frontend,598 &dev->i2c_adap, 0x60,599 &mxl5007t_hvr950q_config);600 break;601 case AU0828_BOARD_HAUPPAUGE_WOODBURY:602 dvb->frontend = dvb_attach(au8522_attach,603 &hauppauge_woodbury_config,604 &dev->i2c_adap);605 if (dvb->frontend != NULL)606 dvb_attach(tda18271_attach, dvb->frontend,607 0x60, &dev->i2c_adap,608 &hauppauge_woodbury_tunerconfig);609 break;610 case AU0828_BOARD_DVICO_FUSIONHDTV7:611 dvb->frontend = dvb_attach(au8522_attach,612 &fusionhdtv7usb_config,613 &dev->i2c_adap);614 if (dvb->frontend != NULL) {615 dvb_attach(xc5000_attach, dvb->frontend,616 &dev->i2c_adap,617 &hauppauge_xc5000a_config);618 }619 break;620 default:621 pr_warn("The frontend of your DVB/ATSC card isn't supported yet\n");622 break;623 }624 if (NULL == dvb->frontend) {625 pr_err("%s() Frontend initialization failed\n",626 __func__);627 return -1;628 }629 /* define general-purpose callback pointer */630 dvb->frontend->callback = au0828_tuner_callback;631 632 /* register everything */633 ret = dvb_register(dev);634 if (ret < 0) {635 if (dvb->frontend->ops.release)636 dvb->frontend->ops.release(dvb->frontend);637 dvb->frontend = NULL;638 return ret;639 }640 641 timer_setup(&dev->bulk_timeout, au0828_bulk_timeout, 0);642 643 return 0;644}645 646void au0828_dvb_suspend(struct au0828_dev *dev)647{648 struct au0828_dvb *dvb = &dev->dvb;649 int rc;650 651 if (dvb->frontend) {652 if (dev->urb_streaming) {653 cancel_work_sync(&dev->restart_streaming);654 /* Stop transport */655 mutex_lock(&dvb->lock);656 stop_urb_transfer(dev);657 au0828_stop_transport(dev, 1);658 mutex_unlock(&dvb->lock);659 dev->need_urb_start = true;660 }661 /* suspend frontend - does tuner and fe to sleep */662 rc = dvb_frontend_suspend(dvb->frontend);663 pr_info("au0828_dvb_suspend(): Suspending DVB fe %d\n", rc);664 }665}666 667void au0828_dvb_resume(struct au0828_dev *dev)668{669 struct au0828_dvb *dvb = &dev->dvb;670 int rc;671 672 if (dvb->frontend) {673 /* resume frontend - does fe and tuner init */674 rc = dvb_frontend_resume(dvb->frontend);675 pr_info("au0828_dvb_resume(): Resuming DVB fe %d\n", rc);676 if (dev->need_urb_start) {677 /* Start transport */678 mutex_lock(&dvb->lock);679 au0828_start_transport(dev);680 start_urb_transfer(dev);681 mutex_unlock(&dvb->lock);682 }683 }684}685