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