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
  30 #include "au8522.h"
  31 #include "xc5000.h"
  32
  33 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  34
  35 unsigned int dvb_debug = 1;
  36
  37 #define _dbg(level, fmt, arg...)\
  38         do { if (dvb_debug >= level)\
  39                 printk(KERN_DEBUG "%s/0: " fmt, DRIVER_NAME, ## arg);\
  40         } while (0)
  41
  42 static struct au8522_config hauppauge_hvr950q_config = {
  43         .demod_address = 0x8e >> 1,
  44         .status_mode   = AU8522_DEMODLOCKING,
  45 };
  46
  47 static struct xc5000_config hauppauge_hvr950q_tunerconfig = {
  48         .i2c_address      = 0x61,
  49         .if_khz           = 6000,
  50         .tuner_callback   = au0828_tuner_callback
  51 };
  52
  53 /*-------------------------------------------------------------------*/
  54 static void urb_completion(struct urb *purb)
  55 {
  56         u8 *ptr;
  57         struct au0828_dev *dev = purb->context;
  58         int ptype = usb_pipetype(purb->pipe);
  59
  60         if (dev->urb_streaming == 0)
  61                 return;
  62
  63         if (ptype != PIPE_BULK) {
  64                 printk(KERN_ERR "%s() Unsupported URB type %d\n", __FUNCTION__, ptype);
  65                 return;
  66         }
  67
  68         ptr = (u8 *)purb->transfer_buffer;
  69
  70         /* Feed the transport payload into the kernel demux */
  71         dvb_dmx_swfilter_packets(&dev->dvb.demux, purb->transfer_buffer, purb->actual_length / 188);
  72
  73         /* Clean the buffer before we requeue */
  74         memset(purb->transfer_buffer, 0, URB_BUFSIZE);
  75
  76         /* Requeue URB */
  77         usb_submit_urb(purb, GFP_ATOMIC);
  78 }
  79
  80 static int stop_urb_transfer(struct au0828_dev *dev)
  81 {
  82         int i;
  83
  84         printk(KERN_INFO "%s()\n", __FUNCTION__);
  85
  86         /* FIXME:  Do we need to free the transfer_buffers? */
  87         for (i = 0; i < URB_COUNT; i++) {
  88                 usb_kill_urb(dev->urbs[i]);
  89                 kfree(dev->urbs[i]->transfer_buffer);
  90                 usb_free_urb(dev->urbs[i]);
  91         }
  92
  93         dev->urb_streaming = 0;
  94
  95         return 0;
  96 }
  97
  98 #define _AU0828_BULKPIPE 0x83
  99 #define _BULKPIPESIZE 0xe522
 100
 101 static int start_urb_transfer(struct au0828_dev *dev)
 102 {
 103         struct urb *purb;
 104         int i, ret = -ENOMEM;
 105         unsigned int pipe = usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE);
 106         int pipesize = usb_maxpacket(dev->usbdev, pipe, usb_pipeout(pipe));
 107         int packets = _BULKPIPESIZE / pipesize;
 108         int transfer_buflen = packets * pipesize;
 109
 110         printk(KERN_INFO "%s() transfer_buflen = %d\n", __FUNCTION__, transfer_buflen);
 111
 112         if (dev->urb_streaming) {
 113                 printk("%s: iso xfer already running!\n", __FUNCTION__);
 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
 124                 purb = dev->urbs[i];
 125
 126                 purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
 127                 if (!purb->transfer_buffer) {
 128                         usb_free_urb(purb);
 129                         dev->urbs[i] = 0;
 130                         goto err;
 131                 }
 132
 133                 purb->status = -EINPROGRESS;
 134                 usb_fill_bulk_urb(purb,
 135                                   dev->usbdev,
 136                                   usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE),
 137                                   purb->transfer_buffer,
 138                                   URB_BUFSIZE,
 139                                   urb_completion,
 140                                   dev);
 141
 142         }
 143
 144         for (i = 0; i < URB_COUNT; i++) {
 145                 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
 146                 if (ret != 0) {
 147                         stop_urb_transfer(dev);
 148                         printk("%s: failed urb submission, err = %d\n", __FUNCTION__, 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         printk(KERN_INFO "%s() pid = 0x%x index = %d\n", __FUNCTION__, feed->pid, feed->index);
 168
 169         if (!demux->dmx.frontend)
 170                 return -EINVAL;
 171
 172         printk(KERN_INFO "%s() Preparing, feeding = %d\n", __FUNCTION__, dvb->feeding);
 173         if (dvb) {
 174                 mutex_lock(&dvb->lock);
 175                 if (dvb->feeding++ == 0) {
 176                         printk(KERN_INFO "%s() Starting Transport DMA\n",
 177                                 __FUNCTION__);
 178                         au0828_write(dev, 0x608, 0x90);
 179                         au0828_write(dev, 0x609, 0x72);
 180                         au0828_write(dev, 0x60a, 0x71);
 181                         au0828_write(dev, 0x60b, 0x01);
 182                         ret = start_urb_transfer(dev);
 183                 }
 184                 mutex_unlock(&dvb->lock);
 185         }
 186
 187         return ret;
 188 }
 189
 190 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
 191 {
 192         struct dvb_demux *demux = feed->demux;
 193         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 194         struct au0828_dvb *dvb = &dev->dvb;
 195         int ret = 0;
 196
 197         printk(KERN_INFO "%s() pid = 0x%x index = %d\n", __FUNCTION__, feed->pid, feed->index);
 198
 199         if (dvb) {
 200                 mutex_lock(&dvb->lock);
 201                 if (--dvb->feeding == 0) {
 202                         printk(KERN_INFO "%s() Stopping Transport DMA\n",
 203                                 __FUNCTION__);
 204                         au0828_write(dev, 0x608, 0x00);
 205                         au0828_write(dev, 0x609, 0x00);
 206                         au0828_write(dev, 0x60a, 0x00);
 207                         au0828_write(dev, 0x60b, 0x00);
 208                         ret = stop_urb_transfer(dev);
 209                 }
 210                 mutex_unlock(&dvb->lock);
 211         }
 212
 213         return ret;
 214 }
 215
 216 int dvb_register(struct au0828_dev *dev)
 217 {
 218         struct au0828_dvb *dvb = &dev->dvb;
 219         int result;
 220
 221         /* register adapter */
 222         result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
 223                                       &dev->usbdev->dev, adapter_nr);
 224         if (result < 0) {
 225                 printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
 226                        DRIVER_NAME, result);
 227                 goto fail_adapter;
 228         }
 229         dvb->adapter.priv = dev;
 230
 231         /* register frontend */
 232         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 233         if (result < 0) {
 234                 printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
 235                        DRIVER_NAME, result);
 236                 goto fail_frontend;
 237         }
 238
 239         /* register demux stuff */
 240         dvb->demux.dmx.capabilities =
 241                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 242                 DMX_MEMORY_BASED_FILTERING;
 243         dvb->demux.priv       = dev;
 244         dvb->demux.filternum  = 256;
 245         dvb->demux.feednum    = 256;
 246         dvb->demux.start_feed = au0828_dvb_start_feed;
 247         dvb->demux.stop_feed  = au0828_dvb_stop_feed;
 248         result = dvb_dmx_init(&dvb->demux);
 249         if (result < 0) {
 250                 printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
 251                        DRIVER_NAME, result);
 252                 goto fail_dmx;
 253         }
 254
 255         dvb->dmxdev.filternum    = 256;
 256         dvb->dmxdev.demux        = &dvb->demux.dmx;
 257         dvb->dmxdev.capabilities = 0;
 258         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 259         if (result < 0) {
 260                 printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
 261                        DRIVER_NAME, result);
 262                 goto fail_dmxdev;
 263         }
 264
 265         dvb->fe_hw.source = DMX_FRONTEND_0;
 266         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 267         if (result < 0) {
 268                 printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
 269                        DRIVER_NAME, result);
 270                 goto fail_fe_hw;
 271         }
 272
 273         dvb->fe_mem.source = DMX_MEMORY_FE;
 274         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 275         if (result < 0) {
 276                 printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
 277                        DRIVER_NAME, result);
 278                 goto fail_fe_mem;
 279         }
 280
 281         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 282         if (result < 0) {
 283                 printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
 284                        DRIVER_NAME, result);
 285                 goto fail_fe_conn;
 286         }
 287
 288         /* register network adapter */
 289         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 290         return 0;
 291
 292 fail_fe_conn:
 293         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 294 fail_fe_mem:
 295         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 296 fail_fe_hw:
 297         dvb_dmxdev_release(&dvb->dmxdev);
 298 fail_dmxdev:
 299         dvb_dmx_release(&dvb->demux);
 300 fail_dmx:
 301         dvb_unregister_frontend(dvb->frontend);
 302 fail_frontend:
 303         dvb_frontend_detach(dvb->frontend);
 304         dvb_unregister_adapter(&dvb->adapter);
 305 fail_adapter:
 306         return result;
 307 }
 308
 309 void au0828_dvb_unregister(struct au0828_dev *dev)
 310 {
 311         struct au0828_dvb *dvb = &dev->dvb;
 312
 313         dvb_net_release(&dvb->net);
 314         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 315         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 316         dvb_dmxdev_release(&dvb->dmxdev);
 317         dvb_dmx_release(&dvb->demux);
 318         dvb_unregister_frontend(dvb->frontend);
 319         dvb_frontend_detach(dvb->frontend);
 320         dvb_unregister_adapter(&dvb->adapter);
 321 }
 322
 323 /* All the DVB attach calls go here, this function get's modified
 324  * for each new card. No other function in this file needs
 325  * to change.
 326  */
 327 int au0828_dvb_register(struct au0828_dev *dev)
 328 {
 329         struct au0828_dvb *dvb = &dev->dvb;
 330         int ret;
 331
 332         /* init frontend */
 333         switch (dev->board) {
 334         case AU0828_BOARD_HAUPPAUGE_HVR850:
 335         case AU0828_BOARD_HAUPPAUGE_HVR950Q:
 336         case AU0828_BOARD_DVICO_FUSIONHDTV7:
 337                 dvb->frontend = dvb_attach(au8522_attach,
 338                                 &hauppauge_hvr950q_config,
 339                                 &dev->i2c_adap);
 340                 if (dvb->frontend != NULL) {
 341                         hauppauge_hvr950q_tunerconfig.priv = dev;
 342                         dvb_attach(xc5000_attach, dvb->frontend,
 343                                 &dev->i2c_adap,
 344                                 &hauppauge_hvr950q_tunerconfig);
 345                 }
 346                 break;
 347         default:
 348                 printk("The frontend of your DVB/ATSC card isn't supported yet\n");
 349                 break;
 350         }
 351         if (NULL == dvb->frontend) {
 352                 printk("Frontend initialization failed\n");
 353                 return -1;
 354         }
 355
 356         /* Put the analog decoder in standby to keep it quiet */
 357         au0828_call_i2c_clients(dev, TUNER_SET_STANDBY, NULL);
 358
 359         if (dvb->frontend->ops.analog_ops.standby)
 360                 dvb->frontend->ops.analog_ops.standby(dvb->frontend);
 361
 362         /* register everything */
 363         ret = dvb_register(dev);
 364         if (ret < 0) {
 365                 if (dvb->frontend->ops.release)
 366                         dvb->frontend->ops.release(dvb->frontend);
 367                 return ret;
 368         }
 369
 370         return 0;
 371 }