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

   1 /*
   2  *  Driver for the Auvitek USB bridge
   3  *
   4  *  Copyright (c) 2008 Steven Toth <stoth@hauppauge.com>
   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/init.h>
  24 #include <linux/device.h>
  25 #include <linux/suspend.h>
  26 #include <media/v4l2-common.h>
  27
  28 #include "au0828.h"
  29 #include "au8522.h"
  30 #include "xc5000.h"
  31 #include "mxl5007t.h"
  32 #include "tda18271.h"
  33
  34 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  35
  36 #define _AU0828_BULKPIPE 0x83
  37 #define _BULKPIPESIZE 0xe522
  38
  39 static struct au8522_config hauppauge_hvr950q_config = {
  40         .demod_address = 0x8e >> 1,
  41         .status_mode   = AU8522_DEMODLOCKING,
  42 };
  43
  44 static struct au8522_config hauppauge_woodbury_config = {
  45         .demod_address = 0x8e >> 1,
  46         .status_mode   = AU8522_DEMODLOCKING,
  47         .qam_if        = AU8522_IF_4MHZ,
  48         .vsb_if        = AU8522_IF_3_25MHZ,
  49 };
  50
  51 static struct xc5000_config hauppauge_hvr950q_tunerconfig = {
  52         .i2c_address      = 0x61,
  53         .if_khz           = 6000,
  54         .tuner_callback   = au0828_tuner_callback
  55 };
  56
  57 static struct mxl5007t_config mxl5007t_hvr950q_config = {
  58         .xtal_freq_hz = MxL_XTAL_24_MHZ,
  59         .if_freq_hz = MxL_IF_6_MHZ,
  60 };
  61
  62 static struct tda18271_config hauppauge_woodbury_tunerconfig = {
  63         .gate    = TDA18271_GATE_DIGITAL,
  64 };
  65
  66 /*-------------------------------------------------------------------*/
  67 static void urb_completion(struct urb *purb)
  68 {
  69         u8 *ptr;
  70         struct au0828_dev *dev = purb->context;
  71         int ptype = usb_pipetype(purb->pipe);
  72
  73         dprintk(2, "%s()\n", __func__);
  74
  75         if (!dev)
  76                 return;
  77
  78         if (dev->urb_streaming == 0)
  79                 return;
  80
  81         if (ptype != PIPE_BULK) {
  82                 printk(KERN_ERR "%s() Unsupported URB type %d\n",
  83                        __func__, ptype);
  84                 return;
  85         }
  86
  87         ptr = (u8 *)purb->transfer_buffer;
  88
  89         /* Feed the transport payload into the kernel demux */
  90         dvb_dmx_swfilter_packets(&dev->dvb.demux,
  91                 purb->transfer_buffer, purb->actual_length / 188);
  92
  93         /* Clean the buffer before we requeue */
  94         memset(purb->transfer_buffer, 0, URB_BUFSIZE);
  95
  96         /* Requeue URB */
  97         usb_submit_urb(purb, GFP_ATOMIC);
  98 }
  99
 100 static int stop_urb_transfer(struct au0828_dev *dev)
 101 {
 102         int i;
 103
 104         dprintk(2, "%s()\n", __func__);
 105
 106         for (i = 0; i < URB_COUNT; i++) {
 107                 usb_kill_urb(dev->urbs[i]);
 108                 kfree(dev->urbs[i]->transfer_buffer);
 109                 usb_free_urb(dev->urbs[i]);
 110         }
 111
 112         dev->urb_streaming = 0;
 113
 114         return 0;
 115 }
 116
 117 static int start_urb_transfer(struct au0828_dev *dev)
 118 {
 119         struct urb *purb;
 120         int i, ret = -ENOMEM;
 121
 122         dprintk(2, "%s()\n", __func__);
 123
 124         if (dev->urb_streaming) {
 125                 dprintk(2, "%s: iso xfer already running!\n", __func__);
 126                 return 0;
 127         }
 128
 129         for (i = 0; i < URB_COUNT; i++) {
 130
 131                 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
 132                 if (!dev->urbs[i])
 133                         goto err;
 134
 135                 purb = dev->urbs[i];
 136
 137                 purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
 138                 if (!purb->transfer_buffer) {
 139                         usb_free_urb(purb);
 140                         dev->urbs[i] = NULL;
 141                         goto err;
 142                 }
 143
 144                 purb->status = -EINPROGRESS;
 145                 usb_fill_bulk_urb(purb,
 146                                   dev->usbdev,
 147                                   usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE),
 148                                   purb->transfer_buffer,
 149                                   URB_BUFSIZE,
 150                                   urb_completion,
 151                                   dev);
 152
 153         }
 154
 155         for (i = 0; i < URB_COUNT; i++) {
 156                 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
 157                 if (ret != 0) {
 158                         stop_urb_transfer(dev);
 159                         printk(KERN_ERR "%s: failed urb submission, "
 160                                "err = %d\n", __func__, ret);
 161                         return ret;
 162                 }
 163         }
 164
 165         dev->urb_streaming = 1;
 166         ret = 0;
 167
 168 err:
 169         return ret;
 170 }
 171
 172 static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
 173 {
 174         struct dvb_demux *demux = feed->demux;
 175         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 176         struct au0828_dvb *dvb = &dev->dvb;
 177         int ret = 0;
 178
 179         dprintk(1, "%s()\n", __func__);
 180
 181         if (!demux->dmx.frontend)
 182                 return -EINVAL;
 183
 184         if (dvb) {
 185                 mutex_lock(&dvb->lock);
 186                 if (dvb->feeding++ == 0) {
 187                         /* Start transport */
 188                         au0828_write(dev, 0x608, 0x90);
 189                         au0828_write(dev, 0x609, 0x72);
 190                         au0828_write(dev, 0x60a, 0x71);
 191                         au0828_write(dev, 0x60b, 0x01);
 192                         ret = start_urb_transfer(dev);
 193                 }
 194                 mutex_unlock(&dvb->lock);
 195         }
 196
 197         return ret;
 198 }
 199
 200 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
 201 {
 202         struct dvb_demux *demux = feed->demux;
 203         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 204         struct au0828_dvb *dvb = &dev->dvb;
 205         int ret = 0;
 206
 207         dprintk(1, "%s()\n", __func__);
 208
 209         if (dvb) {
 210                 mutex_lock(&dvb->lock);
 211                 if (--dvb->feeding == 0) {
 212                         /* Stop transport */
 213                         au0828_write(dev, 0x608, 0x00);
 214                         au0828_write(dev, 0x609, 0x00);
 215                         au0828_write(dev, 0x60a, 0x00);
 216                         au0828_write(dev, 0x60b, 0x00);
 217                         ret = stop_urb_transfer(dev);
 218                 }
 219                 mutex_unlock(&dvb->lock);
 220         }
 221
 222         return ret;
 223 }
 224
 225 static int dvb_register(struct au0828_dev *dev)
 226 {
 227         struct au0828_dvb *dvb = &dev->dvb;
 228         int result;
 229
 230         dprintk(1, "%s()\n", __func__);
 231
 232         /* register adapter */
 233         result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
 234                                       &dev->usbdev->dev, adapter_nr);
 235         if (result < 0) {
 236                 printk(KERN_ERR "%s: dvb_register_adapter failed "
 237                        "(errno = %d)\n", DRIVER_NAME, result);
 238                 goto fail_adapter;
 239         }
 240         dvb->adapter.priv = dev;
 241
 242         /* register frontend */
 243         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 244         if (result < 0) {
 245                 printk(KERN_ERR "%s: dvb_register_frontend failed "
 246                        "(errno = %d)\n", DRIVER_NAME, result);
 247                 goto fail_frontend;
 248         }
 249
 250         /* register demux stuff */
 251         dvb->demux.dmx.capabilities =
 252                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 253                 DMX_MEMORY_BASED_FILTERING;
 254         dvb->demux.priv       = dev;
 255         dvb->demux.filternum  = 256;
 256         dvb->demux.feednum    = 256;
 257         dvb->demux.start_feed = au0828_dvb_start_feed;
 258         dvb->demux.stop_feed  = au0828_dvb_stop_feed;
 259         result = dvb_dmx_init(&dvb->demux);
 260         if (result < 0) {
 261                 printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
 262                        DRIVER_NAME, result);
 263                 goto fail_dmx;
 264         }
 265
 266         dvb->dmxdev.filternum    = 256;
 267         dvb->dmxdev.demux        = &dvb->demux.dmx;
 268         dvb->dmxdev.capabilities = 0;
 269         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 270         if (result < 0) {
 271                 printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
 272                        DRIVER_NAME, result);
 273                 goto fail_dmxdev;
 274         }
 275
 276         dvb->fe_hw.source = DMX_FRONTEND_0;
 277         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 278         if (result < 0) {
 279                 printk(KERN_ERR "%s: add_frontend failed "
 280                        "(DMX_FRONTEND_0, errno = %d)\n", DRIVER_NAME, result);
 281                 goto fail_fe_hw;
 282         }
 283
 284         dvb->fe_mem.source = DMX_MEMORY_FE;
 285         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 286         if (result < 0) {
 287                 printk(KERN_ERR "%s: add_frontend failed "
 288                        "(DMX_MEMORY_FE, errno = %d)\n", DRIVER_NAME, result);
 289                 goto fail_fe_mem;
 290         }
 291
 292         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 293         if (result < 0) {
 294                 printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
 295                        DRIVER_NAME, result);
 296                 goto fail_fe_conn;
 297         }
 298
 299         /* register network adapter */
 300         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 301         return 0;
 302
 303 fail_fe_conn:
 304         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 305 fail_fe_mem:
 306         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 307 fail_fe_hw:
 308         dvb_dmxdev_release(&dvb->dmxdev);
 309 fail_dmxdev:
 310         dvb_dmx_release(&dvb->demux);
 311 fail_dmx:
 312         dvb_unregister_frontend(dvb->frontend);
 313 fail_frontend:
 314         dvb_frontend_detach(dvb->frontend);
 315         dvb_unregister_adapter(&dvb->adapter);
 316 fail_adapter:
 317         return result;
 318 }
 319
 320 void au0828_dvb_unregister(struct au0828_dev *dev)
 321 {
 322         struct au0828_dvb *dvb = &dev->dvb;
 323
 324         dprintk(1, "%s()\n", __func__);
 325
 326         if (dvb->frontend == NULL)
 327                 return;
 328
 329         dvb_net_release(&dvb->net);
 330         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 331         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 332         dvb_dmxdev_release(&dvb->dmxdev);
 333         dvb_dmx_release(&dvb->demux);
 334         dvb_unregister_frontend(dvb->frontend);
 335         dvb_frontend_detach(dvb->frontend);
 336         dvb_unregister_adapter(&dvb->adapter);
 337 }
 338
 339 /* All the DVB attach calls go here, this function get's modified
 340  * for each new card. No other function in this file needs
 341  * to change.
 342  */
 343 int au0828_dvb_register(struct au0828_dev *dev)
 344 {
 345         struct au0828_dvb *dvb = &dev->dvb;
 346         int ret;
 347
 348         dprintk(1, "%s()\n", __func__);
 349
 350         /* init frontend */
 351         switch (dev->board) {
 352         case AU0828_BOARD_HAUPPAUGE_HVR850:
 353         case AU0828_BOARD_HAUPPAUGE_HVR950Q:
 354         case AU0828_BOARD_DVICO_FUSIONHDTV7:
 355                 dvb->frontend = dvb_attach(au8522_attach,
 356                                 &hauppauge_hvr950q_config,
 357                                 &dev->i2c_adap);
 358                 if (dvb->frontend != NULL)
 359                         dvb_attach(xc5000_attach, dvb->frontend,
 360                                 &dev->i2c_adap,
 361                                 &hauppauge_hvr950q_tunerconfig, dev);
 362                 break;
 363         case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:
 364                 dvb->frontend = dvb_attach(au8522_attach,
 365                                 &hauppauge_hvr950q_config,
 366                                 &dev->i2c_adap);
 367                 if (dvb->frontend != NULL)
 368                         dvb_attach(mxl5007t_attach, dvb->frontend,
 369                                    &dev->i2c_adap, 0x60,
 370                                    &mxl5007t_hvr950q_config);
 371                 break;
 372         case AU0828_BOARD_HAUPPAUGE_WOODBURY:
 373                 dvb->frontend = dvb_attach(au8522_attach,
 374                                 &hauppauge_woodbury_config,
 375                                 &dev->i2c_adap);
 376                 if (dvb->frontend != NULL)
 377                         dvb_attach(tda18271_attach, dvb->frontend,
 378                                    0x60, &dev->i2c_adap,
 379                                    &hauppauge_woodbury_tunerconfig);
 380                 break;
 381         default:
 382                 printk(KERN_WARNING "The frontend of your DVB/ATSC card "
 383                        "isn't supported yet\n");
 384                 break;
 385         }
 386         if (NULL == dvb->frontend) {
 387                 printk(KERN_ERR "%s() Frontend initialization failed\n",
 388                        __func__);
 389                 return -1;
 390         }
 391
 392         /* register everything */
 393         ret = dvb_register(dev);
 394         if (ret < 0) {
 395                 if (dvb->frontend->ops.release)
 396                         dvb->frontend->ops.release(dvb->frontend);
 397                 return ret;
 398         }
 399
 400         return 0;
 401 }