drivers/media/usb/au0828/au0828-dvb.c

   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 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  37
  38 #define _AU0828_BULKPIPE 0x83
  39 #define _BULKPIPESIZE 0xe522
  40
  41 static u8 hauppauge_hvr950q_led_states[] = {
  42         0x00, /* off */
  43         0x02, /* yellow */
  44         0x04, /* green */
  45 };
  46
  47 static struct au8522_led_config hauppauge_hvr950q_led_cfg = {
  48         .gpio_output = 0x00e0,
  49         .gpio_output_enable  = 0x6006,
  50         .gpio_output_disable = 0x0660,
  51
  52         .gpio_leds = 0x00e2,
  53         .led_states  = hauppauge_hvr950q_led_states,
  54         .num_led_states = sizeof(hauppauge_hvr950q_led_states),
  55
  56         .vsb8_strong   = 20 /* dB */ * 10,
  57         .qam64_strong  = 25 /* dB */ * 10,
  58         .qam256_strong = 32 /* dB */ * 10,
  59 };
  60
  61 static struct au8522_config hauppauge_hvr950q_config = {
  62         .demod_address = 0x8e >> 1,
  63         .status_mode   = AU8522_DEMODLOCKING,
  64         .qam_if        = AU8522_IF_6MHZ,
  65         .vsb_if        = AU8522_IF_6MHZ,
  66         .led_cfg       = &hauppauge_hvr950q_led_cfg,
  67 };
  68
  69 static struct au8522_config fusionhdtv7usb_config = {
  70         .demod_address = 0x8e >> 1,
  71         .status_mode   = AU8522_DEMODLOCKING,
  72         .qam_if        = AU8522_IF_6MHZ,
  73         .vsb_if        = AU8522_IF_6MHZ,
  74 };
  75
  76 static struct au8522_config hauppauge_woodbury_config = {
  77         .demod_address = 0x8e >> 1,
  78         .status_mode   = AU8522_DEMODLOCKING,
  79         .qam_if        = AU8522_IF_4MHZ,
  80         .vsb_if        = AU8522_IF_3_25MHZ,
  81 };
  82
  83 static struct xc5000_config hauppauge_xc5000a_config = {
  84         .i2c_address      = 0x61,
  85         .if_khz           = 6000,
  86         .chip_id          = XC5000A,
  87 };
  88
  89 static struct xc5000_config hauppauge_xc5000c_config = {
  90         .i2c_address      = 0x61,
  91         .if_khz           = 6000,
  92         .chip_id          = XC5000C,
  93 };
  94
  95 static struct mxl5007t_config mxl5007t_hvr950q_config = {
  96         .xtal_freq_hz = MxL_XTAL_24_MHZ,
  97         .if_freq_hz = MxL_IF_6_MHZ,
  98 };
  99
 100 static struct tda18271_config hauppauge_woodbury_tunerconfig = {
 101         .gate    = TDA18271_GATE_DIGITAL,
 102 };
 103
 104 static void au0828_restart_dvb_streaming(struct work_struct *work);
 105
 106 /*-------------------------------------------------------------------*/
 107 static void urb_completion(struct urb *purb)
 108 {
 109         struct au0828_dev *dev = purb->context;
 110         int ptype = usb_pipetype(purb->pipe);
 111         unsigned char *ptr;
 112
 113         dprintk(2, "%s()\n", __func__);
 114
 115         if (!dev)
 116                 return;
 117
 118         if (dev->urb_streaming == 0)
 119                 return;
 120
 121         if (ptype != PIPE_BULK) {
 122                 printk(KERN_ERR "%s() Unsupported URB type %d\n",
 123                        __func__, ptype);
 124                 return;
 125         }
 126
 127         /* See if the stream is corrupted (to work around a hardware
 128            bug where the stream gets misaligned */
 129         ptr = purb->transfer_buffer;
 130         if (purb->actual_length > 0 && ptr[0] != 0x47) {
 131                 dprintk(1, "Need to restart streaming %02x len=%d!\n",
 132                         ptr[0], purb->actual_length);
 133                 schedule_work(&dev->restart_streaming);
 134                 return;
 135         }
 136
 137         /* Feed the transport payload into the kernel demux */
 138         dvb_dmx_swfilter_packets(&dev->dvb.demux,
 139                 purb->transfer_buffer, purb->actual_length / 188);
 140
 141         /* Clean the buffer before we requeue */
 142         memset(purb->transfer_buffer, 0, URB_BUFSIZE);
 143
 144         /* Requeue URB */
 145         usb_submit_urb(purb, GFP_ATOMIC);
 146 }
 147
 148 static int stop_urb_transfer(struct au0828_dev *dev)
 149 {
 150         int i;
 151
 152         dprintk(2, "%s()\n", __func__);
 153
 154         dev->urb_streaming = 0;
 155         for (i = 0; i < URB_COUNT; i++) {
 156                 usb_kill_urb(dev->urbs[i]);
 157                 kfree(dev->urbs[i]->transfer_buffer);
 158                 usb_free_urb(dev->urbs[i]);
 159         }
 160
 161         return 0;
 162 }
 163
 164 static int start_urb_transfer(struct au0828_dev *dev)
 165 {
 166         struct urb *purb;
 167         int i, ret = -ENOMEM;
 168
 169         dprintk(2, "%s()\n", __func__);
 170
 171         if (dev->urb_streaming) {
 172                 dprintk(2, "%s: bulk xfer already running!\n", __func__);
 173                 return 0;
 174         }
 175
 176         for (i = 0; i < URB_COUNT; i++) {
 177
 178                 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
 179                 if (!dev->urbs[i])
 180                         goto err;
 181
 182                 purb = dev->urbs[i];
 183
 184                 purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
 185                 if (!purb->transfer_buffer) {
 186                         usb_free_urb(purb);
 187                         dev->urbs[i] = NULL;
 188                         goto err;
 189                 }
 190
 191                 purb->status = -EINPROGRESS;
 192                 usb_fill_bulk_urb(purb,
 193                                   dev->usbdev,
 194                                   usb_rcvbulkpipe(dev->usbdev,
 195                                         _AU0828_BULKPIPE),
 196                                   purb->transfer_buffer,
 197                                   URB_BUFSIZE,
 198                                   urb_completion,
 199                                   dev);
 200
 201         }
 202
 203         for (i = 0; i < URB_COUNT; i++) {
 204                 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
 205                 if (ret != 0) {
 206                         stop_urb_transfer(dev);
 207                         printk(KERN_ERR "%s: failed urb submission, "
 208                                "err = %d\n", __func__, ret);
 209                         return ret;
 210                 }
 211         }
 212
 213         dev->urb_streaming = 1;
 214         ret = 0;
 215
 216 err:
 217         return ret;
 218 }
 219
 220 static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
 221 {
 222         struct dvb_demux *demux = feed->demux;
 223         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 224         struct au0828_dvb *dvb = &dev->dvb;
 225         int ret = 0;
 226
 227         dprintk(1, "%s()\n", __func__);
 228
 229         if (!demux->dmx.frontend)
 230                 return -EINVAL;
 231
 232         if (dvb) {
 233                 mutex_lock(&dvb->lock);
 234                 if (dvb->feeding++ == 0) {
 235                         /* Start transport */
 236                         au0828_write(dev, 0x608, 0x90);
 237                         au0828_write(dev, 0x609, 0x72);
 238                         au0828_write(dev, 0x60a, 0x71);
 239                         au0828_write(dev, 0x60b, 0x01);
 240                         ret = start_urb_transfer(dev);
 241                 }
 242                 mutex_unlock(&dvb->lock);
 243         }
 244
 245         return ret;
 246 }
 247
 248 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
 249 {
 250         struct dvb_demux *demux = feed->demux;
 251         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 252         struct au0828_dvb *dvb = &dev->dvb;
 253         int ret = 0;
 254
 255         dprintk(1, "%s()\n", __func__);
 256
 257         if (dvb) {
 258                 mutex_lock(&dvb->lock);
 259                 if (--dvb->feeding == 0) {
 260                         /* Stop transport */
 261                         ret = stop_urb_transfer(dev);
 262                         au0828_write(dev, 0x60b, 0x00);
 263                 }
 264                 mutex_unlock(&dvb->lock);
 265         }
 266
 267         return ret;
 268 }
 269
 270 static void au0828_restart_dvb_streaming(struct work_struct *work)
 271 {
 272         struct au0828_dev *dev = container_of(work, struct au0828_dev,
 273                                               restart_streaming);
 274         struct au0828_dvb *dvb = &dev->dvb;
 275
 276         if (dev->urb_streaming == 0)
 277                 return;
 278
 279         dprintk(1, "Restarting streaming...!\n");
 280
 281         mutex_lock(&dvb->lock);
 282
 283         /* Stop transport */
 284         stop_urb_transfer(dev);
 285         au0828_write(dev, 0x608, 0x00);
 286         au0828_write(dev, 0x609, 0x00);
 287         au0828_write(dev, 0x60a, 0x00);
 288         au0828_write(dev, 0x60b, 0x00);
 289
 290         /* Start transport */
 291         au0828_write(dev, 0x608, 0x90);
 292         au0828_write(dev, 0x609, 0x72);
 293         au0828_write(dev, 0x60a, 0x71);
 294         au0828_write(dev, 0x60b, 0x01);
 295         start_urb_transfer(dev);
 296
 297         mutex_unlock(&dvb->lock);
 298 }
 299
 300 static int dvb_register(struct au0828_dev *dev)
 301 {
 302         struct au0828_dvb *dvb = &dev->dvb;
 303         int result;
 304
 305         dprintk(1, "%s()\n", __func__);
 306
 307         INIT_WORK(&dev->restart_streaming, au0828_restart_dvb_streaming);
 308
 309         /* register adapter */
 310         result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
 311                                       &dev->usbdev->dev, adapter_nr);
 312         if (result < 0) {
 313                 printk(KERN_ERR "%s: dvb_register_adapter failed "
 314                        "(errno = %d)\n", DRIVER_NAME, result);
 315                 goto fail_adapter;
 316         }
 317         dvb->adapter.priv = dev;
 318
 319         /* register frontend */
 320         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 321         if (result < 0) {
 322                 printk(KERN_ERR "%s: dvb_register_frontend failed "
 323                        "(errno = %d)\n", DRIVER_NAME, result);
 324                 goto fail_frontend;
 325         }
 326
 327         /* register demux stuff */
 328         dvb->demux.dmx.capabilities =
 329                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 330                 DMX_MEMORY_BASED_FILTERING;
 331         dvb->demux.priv       = dev;
 332         dvb->demux.filternum  = 256;
 333         dvb->demux.feednum    = 256;
 334         dvb->demux.start_feed = au0828_dvb_start_feed;
 335         dvb->demux.stop_feed  = au0828_dvb_stop_feed;
 336         result = dvb_dmx_init(&dvb->demux);
 337         if (result < 0) {
 338                 printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
 339                        DRIVER_NAME, result);
 340                 goto fail_dmx;
 341         }
 342
 343         dvb->dmxdev.filternum    = 256;
 344         dvb->dmxdev.demux        = &dvb->demux.dmx;
 345         dvb->dmxdev.capabilities = 0;
 346         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 347         if (result < 0) {
 348                 printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
 349                        DRIVER_NAME, result);
 350                 goto fail_dmxdev;
 351         }
 352
 353         dvb->fe_hw.source = DMX_FRONTEND_0;
 354         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 355         if (result < 0) {
 356                 printk(KERN_ERR "%s: add_frontend failed "
 357                        "(DMX_FRONTEND_0, errno = %d)\n", DRIVER_NAME, result);
 358                 goto fail_fe_hw;
 359         }
 360
 361         dvb->fe_mem.source = DMX_MEMORY_FE;
 362         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 363         if (result < 0) {
 364                 printk(KERN_ERR "%s: add_frontend failed "
 365                        "(DMX_MEMORY_FE, errno = %d)\n", DRIVER_NAME, result);
 366                 goto fail_fe_mem;
 367         }
 368
 369         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 370         if (result < 0) {
 371                 printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
 372                        DRIVER_NAME, result);
 373                 goto fail_fe_conn;
 374         }
 375
 376         /* register network adapter */
 377         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 378         return 0;
 379
 380 fail_fe_conn:
 381         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 382 fail_fe_mem:
 383         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 384 fail_fe_hw:
 385         dvb_dmxdev_release(&dvb->dmxdev);
 386 fail_dmxdev:
 387         dvb_dmx_release(&dvb->demux);
 388 fail_dmx:
 389         dvb_unregister_frontend(dvb->frontend);
 390 fail_frontend:
 391         dvb_frontend_detach(dvb->frontend);
 392         dvb_unregister_adapter(&dvb->adapter);
 393 fail_adapter:
 394         return result;
 395 }
 396
 397 void au0828_dvb_unregister(struct au0828_dev *dev)
 398 {
 399         struct au0828_dvb *dvb = &dev->dvb;
 400
 401         dprintk(1, "%s()\n", __func__);
 402
 403         if (dvb->frontend == NULL)
 404                 return;
 405
 406         dvb_net_release(&dvb->net);
 407         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 408         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 409         dvb_dmxdev_release(&dvb->dmxdev);
 410         dvb_dmx_release(&dvb->demux);
 411         dvb_unregister_frontend(dvb->frontend);
 412         dvb_frontend_detach(dvb->frontend);
 413         dvb_unregister_adapter(&dvb->adapter);
 414 }
 415
 416 /* All the DVB attach calls go here, this function get's modified
 417  * for each new card. No other function in this file needs
 418  * to change.
 419  */
 420 int au0828_dvb_register(struct au0828_dev *dev)
 421 {
 422         struct au0828_dvb *dvb = &dev->dvb;
 423         int ret;
 424
 425         dprintk(1, "%s()\n", __func__);
 426
 427         /* init frontend */
 428         switch (dev->boardnr) {
 429         case AU0828_BOARD_HAUPPAUGE_HVR850:
 430         case AU0828_BOARD_HAUPPAUGE_HVR950Q:
 431                 dvb->frontend = dvb_attach(au8522_attach,
 432                                 &hauppauge_hvr950q_config,
 433                                 &dev->i2c_adap);
 434                 if (dvb->frontend != NULL)
 435                         switch (dev->board.tuner_type) {
 436                         default:
 437                         case TUNER_XC5000:
 438                                 dvb_attach(xc5000_attach, dvb->frontend,
 439                                            &dev->i2c_adap,
 440                                            &hauppauge_xc5000a_config);
 441                                 break;
 442                         case TUNER_XC5000C:
 443                                 dvb_attach(xc5000_attach, dvb->frontend,
 444                                            &dev->i2c_adap,
 445                                            &hauppauge_xc5000c_config);
 446                                 break;
 447                         }
 448                 break;
 449         case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:
 450                 dvb->frontend = dvb_attach(au8522_attach,
 451                                 &hauppauge_hvr950q_config,
 452                                 &dev->i2c_adap);
 453                 if (dvb->frontend != NULL)
 454                         dvb_attach(mxl5007t_attach, dvb->frontend,
 455                                    &dev->i2c_adap, 0x60,
 456                                    &mxl5007t_hvr950q_config);
 457                 break;
 458         case AU0828_BOARD_HAUPPAUGE_WOODBURY:
 459                 dvb->frontend = dvb_attach(au8522_attach,
 460                                 &hauppauge_woodbury_config,
 461                                 &dev->i2c_adap);
 462                 if (dvb->frontend != NULL)
 463                         dvb_attach(tda18271_attach, dvb->frontend,
 464                                    0x60, &dev->i2c_adap,
 465                                    &hauppauge_woodbury_tunerconfig);
 466                 break;
 467         case AU0828_BOARD_DVICO_FUSIONHDTV7:
 468                 dvb->frontend = dvb_attach(au8522_attach,
 469                                 &fusionhdtv7usb_config,
 470                                 &dev->i2c_adap);
 471                 if (dvb->frontend != NULL) {
 472                         dvb_attach(xc5000_attach, dvb->frontend,
 473                                 &dev->i2c_adap,
 474                                 &hauppauge_xc5000a_config);
 475                 }
 476                 break;
 477         default:
 478                 printk(KERN_WARNING "The frontend of your DVB/ATSC card "
 479                        "isn't supported yet\n");
 480                 break;
 481         }
 482         if (NULL == dvb->frontend) {
 483                 printk(KERN_ERR "%s() Frontend initialization failed\n",
 484                        __func__);
 485                 return -1;
 486         }
 487         /* define general-purpose callback pointer */
 488         dvb->frontend->callback = au0828_tuner_callback;
 489
 490         /* register everything */
 491         ret = dvb_register(dev);
 492         if (ret < 0) {
 493                 if (dvb->frontend->ops.release)
 494                         dvb->frontend->ops.release(dvb->frontend);
 495                 return ret;
 496         }
 497
 498         return 0;
 499 }