err.no Git - linux-2.6/blob - 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
  32 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  33
  34 static struct au8522_config hauppauge_hvr950q_config = {
  35         .demod_address = 0x8e >> 1,
  36         .status_mode   = AU8522_DEMODLOCKING,
  37 };
  38
  39 static struct xc5000_config hauppauge_hvr950q_tunerconfig = {
  40         .i2c_address      = 0x61,
  41         .if_khz           = 6000,
  42         .tuner_callback   = au0828_tuner_callback
  43 };
  44
  45 /*-------------------------------------------------------------------*/
  46 static void urb_completion(struct urb *purb)
  47 {
  48         u8 *ptr;
  49         struct au0828_dev *dev = purb->context;
  50         int ptype = usb_pipetype(purb->pipe);
  51
  52         dprintk(2, "%s()\n", __FUNCTION__);
  53
  54         if (!dev)
  55                 return;
  56
  57         if (dev->urb_streaming == 0)
  58                 return;
  59
  60         if (ptype != PIPE_BULK) {
  61                 printk(KERN_ERR "%s() Unsupported URB type %d\n", __FUNCTION__, ptype);
  62                 return;
  63         }
  64
  65         ptr = (u8 *)purb->transfer_buffer;
  66
  67         /* Feed the transport payload into the kernel demux */
  68         dvb_dmx_swfilter_packets(&dev->dvb.demux, purb->transfer_buffer, purb->actual_length / 188);
  69
  70         /* Clean the buffer before we requeue */
  71         memset(purb->transfer_buffer, 0, URB_BUFSIZE);
  72
  73         /* Requeue URB */
  74         usb_submit_urb(purb, GFP_ATOMIC);
  75 }
  76
  77 static int stop_urb_transfer(struct au0828_dev *dev)
  78 {
  79         int i;
  80
  81         dprintk(2, "%s()\n", __FUNCTION__);
  82
  83         /* FIXME:  Do we need to free the transfer_buffers? */
  84         for (i = 0; i < URB_COUNT; i++) {
  85                 usb_kill_urb(dev->urbs[i]);
  86                 kfree(dev->urbs[i]->transfer_buffer);
  87                 usb_free_urb(dev->urbs[i]);
  88         }
  89
  90         dev->urb_streaming = 0;
  91
  92         return 0;
  93 }
  94
  95 #define _AU0828_BULKPIPE 0x83
  96 #define _BULKPIPESIZE 0xe522
  97
  98 static int start_urb_transfer(struct au0828_dev *dev)
  99 {
 100         struct urb *purb;
 101         int i, ret = -ENOMEM;
 102
 103         dprintk(2, "%s()\n", __FUNCTION__);
 104
 105         if (dev->urb_streaming) {
 106                 dprintk(2, "%s: iso xfer already running!\n", __FUNCTION__);
 107                 return 0;
 108         }
 109
 110         for (i = 0; i < URB_COUNT; i++) {
 111
 112                 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
 113                 if (!dev->urbs[i]) {
 114                         goto err;
 115                 }
 116
 117                 purb = dev->urbs[i];
 118
 119                 purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
 120                 if (!purb->transfer_buffer) {
 121                         usb_free_urb(purb);
 122                         dev->urbs[i] = 0;
 123                         goto err;
 124                 }
 125
 126                 purb->status = -EINPROGRESS;
 127                 usb_fill_bulk_urb(purb,
 128                                   dev->usbdev,
 129                                   usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE),
 130                                   purb->transfer_buffer,
 131                                   URB_BUFSIZE,
 132                                   urb_completion,
 133                                   dev);
 134
 135         }
 136
 137         for (i = 0; i < URB_COUNT; i++) {
 138                 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
 139                 if (ret != 0) {
 140                         stop_urb_transfer(dev);
 141                         printk("%s: failed urb submission, err = %d\n", __FUNCTION__, ret);
 142                         return ret;
 143                 }
 144         }
 145
 146         dev->urb_streaming = 1;
 147         ret = 0;
 148
 149 err:
 150         return ret;
 151 }
 152
 153 static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
 154 {
 155         struct dvb_demux *demux = feed->demux;
 156         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 157         struct au0828_dvb *dvb = &dev->dvb;
 158         int ret = 0;
 159
 160         dprintk(1, "%s()\n", __FUNCTION__);
 161
 162         if (!demux->dmx.frontend)
 163                 return -EINVAL;
 164
 165         if (dvb) {
 166                 mutex_lock(&dvb->lock);
 167                 if (dvb->feeding++ == 0) {
 168                         /* Start transport */
 169                         au0828_write(dev, 0x608, 0x90);
 170                         au0828_write(dev, 0x609, 0x72);
 171                         au0828_write(dev, 0x60a, 0x71);
 172                         au0828_write(dev, 0x60b, 0x01);
 173                         ret = start_urb_transfer(dev);
 174                 }
 175                 mutex_unlock(&dvb->lock);
 176         }
 177
 178         return ret;
 179 }
 180
 181 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
 182 {
 183         struct dvb_demux *demux = feed->demux;
 184         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 185         struct au0828_dvb *dvb = &dev->dvb;
 186         int ret = 0;
 187
 188         dprintk(1, "%s()\n", __FUNCTION__);
 189
 190         if (dvb) {
 191                 mutex_lock(&dvb->lock);
 192                 if (--dvb->feeding == 0) {
 193                         /* Stop transport */
 194                         au0828_write(dev, 0x608, 0x00);
 195                         au0828_write(dev, 0x609, 0x00);
 196                         au0828_write(dev, 0x60a, 0x00);
 197                         au0828_write(dev, 0x60b, 0x00);
 198                         ret = stop_urb_transfer(dev);
 199                 }
 200                 mutex_unlock(&dvb->lock);
 201         }
 202
 203         return ret;
 204 }
 205
 206 int dvb_register(struct au0828_dev *dev)
 207 {
 208         struct au0828_dvb *dvb = &dev->dvb;
 209         int result;
 210
 211         dprintk(1, "%s()\n", __FUNCTION__);
 212
 213         /* register adapter */
 214         result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
 215                                       &dev->usbdev->dev, adapter_nr);
 216         if (result < 0) {
 217                 printk(KERN_ERROR "%s: dvb_register_adapter failed (errno = %d)\n",
 218                        DRIVER_NAME, result);
 219                 goto fail_adapter;
 220         }
 221         dvb->adapter.priv = dev;
 222
 223         /* register frontend */
 224         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 225         if (result < 0) {
 226                 printk(KERN_ERR "%s: dvb_register_frontend failed (errno = %d)\n",
 227                        DRIVER_NAME, result);
 228                 goto fail_frontend;
 229         }
 230
 231         /* register demux stuff */
 232         dvb->demux.dmx.capabilities =
 233                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 234                 DMX_MEMORY_BASED_FILTERING;
 235         dvb->demux.priv       = dev;
 236         dvb->demux.filternum  = 256;
 237         dvb->demux.feednum    = 256;
 238         dvb->demux.start_feed = au0828_dvb_start_feed;
 239         dvb->demux.stop_feed  = au0828_dvb_stop_feed;
 240         result = dvb_dmx_init(&dvb->demux);
 241         if (result < 0) {
 242                 printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
 243                        DRIVER_NAME, result);
 244                 goto fail_dmx;
 245         }
 246
 247         dvb->dmxdev.filternum    = 256;
 248         dvb->dmxdev.demux        = &dvb->demux.dmx;
 249         dvb->dmxdev.capabilities = 0;
 250         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 251         if (result < 0) {
 252                 printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
 253                        DRIVER_NAME, result);
 254                 goto fail_dmxdev;
 255         }
 256
 257         dvb->fe_hw.source = DMX_FRONTEND_0;
 258         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 259         if (result < 0) {
 260                 printk(KERN_ERR "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
 261                        DRIVER_NAME, result);
 262                 goto fail_fe_hw;
 263         }
 264
 265         dvb->fe_mem.source = DMX_MEMORY_FE;
 266         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 267         if (result < 0) {
 268                 printk(KERN_ERR "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
 269                        DRIVER_NAME, result);
 270                 goto fail_fe_mem;
 271         }
 272
 273         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 274         if (result < 0) {
 275                 printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
 276                        DRIVER_NAME, result);
 277                 goto fail_fe_conn;
 278         }
 279
 280         /* register network adapter */
 281         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 282         return 0;
 283
 284 fail_fe_conn:
 285         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 286 fail_fe_mem:
 287         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 288 fail_fe_hw:
 289         dvb_dmxdev_release(&dvb->dmxdev);
 290 fail_dmxdev:
 291         dvb_dmx_release(&dvb->demux);
 292 fail_dmx:
 293         dvb_unregister_frontend(dvb->frontend);
 294 fail_frontend:
 295         dvb_frontend_detach(dvb->frontend);
 296         dvb_unregister_adapter(&dvb->adapter);
 297 fail_adapter:
 298         return result;
 299 }
 300
 301 void au0828_dvb_unregister(struct au0828_dev *dev)
 302 {
 303         struct au0828_dvb *dvb = &dev->dvb;
 304
 305         dprintk(1, "%s()\n", __FUNCTION__);
 306
 307         if(dvb->frontend == NULL)
 308                 return;
 309
 310         dvb_net_release(&dvb->net);
 311         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 312         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 313         dvb_dmxdev_release(&dvb->dmxdev);
 314         dvb_dmx_release(&dvb->demux);
 315         dvb_unregister_frontend(dvb->frontend);
 316         dvb_frontend_detach(dvb->frontend);
 317         dvb_unregister_adapter(&dvb->adapter);
 318 }
 319
 320 /* All the DVB attach calls go here, this function get's modified
 321  * for each new card. No other function in this file needs
 322  * to change.
 323  */
 324 int au0828_dvb_register(struct au0828_dev *dev)
 325 {
 326         struct au0828_dvb *dvb = &dev->dvb;
 327         int ret;
 328
 329         dprintk(1, "%s()\n", __FUNCTION__);
 330
 331         /* init frontend */
 332         switch (dev->board) {
 333         case AU0828_BOARD_HAUPPAUGE_HVR850:
 334         case AU0828_BOARD_HAUPPAUGE_HVR950Q:
 335         case AU0828_BOARD_DVICO_FUSIONHDTV7:
 336                 dvb->frontend = dvb_attach(au8522_attach,
 337                                 &hauppauge_hvr950q_config,
 338                                 &dev->i2c_adap);
 339                 if (dvb->frontend != NULL) {
 340                         hauppauge_hvr950q_tunerconfig.priv = dev;
 341                         dvb_attach(xc5000_attach, dvb->frontend,
 342                                 &dev->i2c_adap,
 343                                 &hauppauge_hvr950q_tunerconfig);
 344                 }
 345                 break;
 346         default:
 347                 printk("The frontend of your DVB/ATSC card isn't supported yet\n");
 348                 break;
 349         }
 350         if (NULL == dvb->frontend) {
 351                 printk(KERN_ERR "%s() Frontend initialization failed\n", __FUNCTION__);
 352                 return -1;
 353         }
 354
 355         /* Put the analog decoder in standby to keep it quiet */
 356         au0828_call_i2c_clients(dev, TUNER_SET_STANDBY, NULL);
 357
 358         if (dvb->frontend->ops.analog_ops.standby)
 359                 dvb->frontend->ops.analog_ops.standby(dvb->frontend);
 360
 361         /* register everything */
 362         ret = dvb_register(dev);
 363         if (ret < 0) {
 364                 if (dvb->frontend->ops.release)
 365                         dvb->frontend->ops.release(dvb->frontend);
 366                 return ret;
 367         }
 368
 369         return 0;
 370 }