SAFE public projects git trees. - safe/jmp/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 #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         .qam_if        = AU8522_IF_6MHZ,
  43         .vsb_if        = AU8522_IF_6MHZ,
  44 };
  45
  46 static struct au8522_config hauppauge_woodbury_config = {
  47         .demod_address = 0x8e >> 1,
  48         .status_mode   = AU8522_DEMODLOCKING,
  49         .qam_if        = AU8522_IF_4MHZ,
  50         .vsb_if        = AU8522_IF_3_25MHZ,
  51 };
  52
  53 static struct xc5000_config hauppauge_hvr950q_tunerconfig = {
  54         .i2c_address      = 0x61,
  55         .if_khz           = 6000,
  56         .tuner_callback   = au0828_tuner_callback
  57 };
  58
  59 static struct mxl5007t_config mxl5007t_hvr950q_config = {
  60         .xtal_freq_hz = MxL_XTAL_24_MHZ,
  61         .if_freq_hz = MxL_IF_6_MHZ,
  62 };
  63
  64 static struct tda18271_config hauppauge_woodbury_tunerconfig = {
  65         .gate    = TDA18271_GATE_DIGITAL,
  66 };
  67
  68 /*-------------------------------------------------------------------*/
  69 static void urb_completion(struct urb *purb)
  70 {
  71         u8 *ptr;
  72         struct au0828_dev *dev = purb->context;
  73         int ptype = usb_pipetype(purb->pipe);
  74
  75         dprintk(2, "%s()\n", __func__);
  76
  77         if (!dev)
  78                 return;
  79
  80         if (dev->urb_streaming == 0)
  81                 return;
  82
  83         if (ptype != PIPE_BULK) {
  84                 printk(KERN_ERR "%s() Unsupported URB type %d\n",
  85                        __func__, ptype);
  86                 return;
  87         }
  88
  89         ptr = (u8 *)purb->transfer_buffer;
  90
  91         /* Feed the transport payload into the kernel demux */
  92         dvb_dmx_swfilter_packets(&dev->dvb.demux,
  93                 purb->transfer_buffer, purb->actual_length / 188);
  94
  95         /* Clean the buffer before we requeue */
  96         memset(purb->transfer_buffer, 0, URB_BUFSIZE);
  97
  98         /* Requeue URB */
  99         usb_submit_urb(purb, GFP_ATOMIC);
 100 }
 101
 102 static int stop_urb_transfer(struct au0828_dev *dev)
 103 {
 104         int i;
 105
 106         dprintk(2, "%s()\n", __func__);
 107
 108         for (i = 0; i < URB_COUNT; i++) {
 109                 usb_kill_urb(dev->urbs[i]);
 110                 kfree(dev->urbs[i]->transfer_buffer);
 111                 usb_free_urb(dev->urbs[i]);
 112         }
 113
 114         dev->urb_streaming = 0;
 115
 116         return 0;
 117 }
 118
 119 static int start_urb_transfer(struct au0828_dev *dev)
 120 {
 121         struct urb *purb;
 122         int i, ret = -ENOMEM;
 123
 124         dprintk(2, "%s()\n", __func__);
 125
 126         if (dev->urb_streaming) {
 127                 dprintk(2, "%s: iso xfer already running!\n", __func__);
 128                 return 0;
 129         }
 130
 131         for (i = 0; i < URB_COUNT; i++) {
 132
 133                 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
 134                 if (!dev->urbs[i])
 135                         goto err;
 136
 137                 purb = dev->urbs[i];
 138
 139                 purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
 140                 if (!purb->transfer_buffer) {
 141                         usb_free_urb(purb);
 142                         dev->urbs[i] = NULL;
 143                         goto err;
 144                 }
 145
 146                 purb->status = -EINPROGRESS;
 147                 usb_fill_bulk_urb(purb,
 148                                   dev->usbdev,
 149                                   usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE),
 150                                   purb->transfer_buffer,
 151                                   URB_BUFSIZE,
 152                                   urb_completion,
 153                                   dev);
 154
 155         }
 156
 157         for (i = 0; i < URB_COUNT; i++) {
 158                 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
 159                 if (ret != 0) {
 160                         stop_urb_transfer(dev);
 161                         printk(KERN_ERR "%s: failed urb submission, "
 162                                "err = %d\n", __func__, ret);
 163                         return ret;
 164                 }
 165         }
 166
 167         dev->urb_streaming = 1;
 168         ret = 0;
 169
 170 err:
 171         return ret;
 172 }
 173
 174 static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
 175 {
 176         struct dvb_demux *demux = feed->demux;
 177         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 178         struct au0828_dvb *dvb = &dev->dvb;
 179         int ret = 0;
 180
 181         dprintk(1, "%s()\n", __func__);
 182
 183         if (!demux->dmx.frontend)
 184                 return -EINVAL;
 185
 186         if (dvb) {
 187                 mutex_lock(&dvb->lock);
 188                 if (dvb->feeding++ == 0) {
 189                         /* Start transport */
 190                         au0828_write(dev, 0x608, 0x90);
 191                         au0828_write(dev, 0x609, 0x72);
 192                         au0828_write(dev, 0x60a, 0x71);
 193                         au0828_write(dev, 0x60b, 0x01);
 194                         ret = start_urb_transfer(dev);
 195                 }
 196                 mutex_unlock(&dvb->lock);
 197         }
 198
 199         return ret;
 200 }
 201
 202 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
 203 {
 204         struct dvb_demux *demux = feed->demux;
 205         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 206         struct au0828_dvb *dvb = &dev->dvb;
 207         int ret = 0;
 208
 209         dprintk(1, "%s()\n", __func__);
 210
 211         if (dvb) {
 212                 mutex_lock(&dvb->lock);
 213                 if (--dvb->feeding == 0) {
 214                         /* Stop transport */
 215                         au0828_write(dev, 0x608, 0x00);
 216                         au0828_write(dev, 0x609, 0x00);
 217                         au0828_write(dev, 0x60a, 0x00);
 218                         au0828_write(dev, 0x60b, 0x00);
 219                         ret = stop_urb_transfer(dev);
 220                 }
 221                 mutex_unlock(&dvb->lock);
 222         }
 223
 224         return ret;
 225 }
 226
 227 static int dvb_register(struct au0828_dev *dev)
 228 {
 229         struct au0828_dvb *dvb = &dev->dvb;
 230         int result;
 231
 232         dprintk(1, "%s()\n", __func__);
 233
 234         /* register adapter */
 235         result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
 236                                       &dev->usbdev->dev, adapter_nr);
 237         if (result < 0) {
 238                 printk(KERN_ERR "%s: dvb_register_adapter failed "
 239                        "(errno = %d)\n", DRIVER_NAME, result);
 240                 goto fail_adapter;
 241         }
 242         dvb->adapter.priv = dev;
 243
 244         /* register frontend */
 245         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 246         if (result < 0) {
 247                 printk(KERN_ERR "%s: dvb_register_frontend failed "
 248                        "(errno = %d)\n", DRIVER_NAME, result);
 249                 goto fail_frontend;
 250         }
 251
 252         /* register demux stuff */
 253         dvb->demux.dmx.capabilities =
 254                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 255                 DMX_MEMORY_BASED_FILTERING;
 256         dvb->demux.priv       = dev;
 257         dvb->demux.filternum  = 256;
 258         dvb->demux.feednum    = 256;
 259         dvb->demux.start_feed = au0828_dvb_start_feed;
 260         dvb->demux.stop_feed  = au0828_dvb_stop_feed;
 261         result = dvb_dmx_init(&dvb->demux);
 262         if (result < 0) {
 263                 printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
 264                        DRIVER_NAME, result);
 265                 goto fail_dmx;
 266         }
 267
 268         dvb->dmxdev.filternum    = 256;
 269         dvb->dmxdev.demux        = &dvb->demux.dmx;
 270         dvb->dmxdev.capabilities = 0;
 271         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 272         if (result < 0) {
 273                 printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
 274                        DRIVER_NAME, result);
 275                 goto fail_dmxdev;
 276         }
 277
 278         dvb->fe_hw.source = DMX_FRONTEND_0;
 279         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 280         if (result < 0) {
 281                 printk(KERN_ERR "%s: add_frontend failed "
 282                        "(DMX_FRONTEND_0, errno = %d)\n", DRIVER_NAME, result);
 283                 goto fail_fe_hw;
 284         }
 285
 286         dvb->fe_mem.source = DMX_MEMORY_FE;
 287         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 288         if (result < 0) {
 289                 printk(KERN_ERR "%s: add_frontend failed "
 290                        "(DMX_MEMORY_FE, errno = %d)\n", DRIVER_NAME, result);
 291                 goto fail_fe_mem;
 292         }
 293
 294         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 295         if (result < 0) {
 296                 printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
 297                        DRIVER_NAME, result);
 298                 goto fail_fe_conn;
 299         }
 300
 301         /* register network adapter */
 302         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 303         return 0;
 304
 305 fail_fe_conn:
 306         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 307 fail_fe_mem:
 308         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 309 fail_fe_hw:
 310         dvb_dmxdev_release(&dvb->dmxdev);
 311 fail_dmxdev:
 312         dvb_dmx_release(&dvb->demux);
 313 fail_dmx:
 314         dvb_unregister_frontend(dvb->frontend);
 315 fail_frontend:
 316         dvb_frontend_detach(dvb->frontend);
 317         dvb_unregister_adapter(&dvb->adapter);
 318 fail_adapter:
 319         return result;
 320 }
 321
 322 void au0828_dvb_unregister(struct au0828_dev *dev)
 323 {
 324         struct au0828_dvb *dvb = &dev->dvb;
 325
 326         dprintk(1, "%s()\n", __func__);
 327
 328         if (dvb->frontend == NULL)
 329                 return;
 330
 331         dvb_net_release(&dvb->net);
 332         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 333         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 334         dvb_dmxdev_release(&dvb->dmxdev);
 335         dvb_dmx_release(&dvb->demux);
 336         dvb_unregister_frontend(dvb->frontend);
 337         dvb_frontend_detach(dvb->frontend);
 338         dvb_unregister_adapter(&dvb->adapter);
 339 }
 340
 341 /* All the DVB attach calls go here, this function get's modified
 342  * for each new card. No other function in this file needs
 343  * to change.
 344  */
 345 int au0828_dvb_register(struct au0828_dev *dev)
 346 {
 347         struct au0828_dvb *dvb = &dev->dvb;
 348         int ret;
 349
 350         dprintk(1, "%s()\n", __func__);
 351
 352         /* init frontend */
 353         switch (dev->board) {
 354         case AU0828_BOARD_HAUPPAUGE_HVR850:
 355         case AU0828_BOARD_HAUPPAUGE_HVR950Q:
 356         case AU0828_BOARD_DVICO_FUSIONHDTV7:
 357                 dvb->frontend = dvb_attach(au8522_attach,
 358                                 &hauppauge_hvr950q_config,
 359                                 &dev->i2c_adap);
 360                 if (dvb->frontend != NULL)
 361                         dvb_attach(xc5000_attach, dvb->frontend,
 362                                 &dev->i2c_adap,
 363                                 &hauppauge_hvr950q_tunerconfig, dev);
 364                 break;
 365         case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:
 366                 dvb->frontend = dvb_attach(au8522_attach,
 367                                 &hauppauge_hvr950q_config,
 368                                 &dev->i2c_adap);
 369                 if (dvb->frontend != NULL)
 370                         dvb_attach(mxl5007t_attach, dvb->frontend,
 371                                    &dev->i2c_adap, 0x60,
 372                                    &mxl5007t_hvr950q_config);
 373                 break;
 374         case AU0828_BOARD_HAUPPAUGE_WOODBURY:
 375                 dvb->frontend = dvb_attach(au8522_attach,
 376                                 &hauppauge_woodbury_config,
 377                                 &dev->i2c_adap);
 378                 if (dvb->frontend != NULL)
 379                         dvb_attach(tda18271_attach, dvb->frontend,
 380                                    0x60, &dev->i2c_adap,
 381                                    &hauppauge_woodbury_tunerconfig);
 382                 break;
 383         default:
 384                 printk(KERN_WARNING "The frontend of your DVB/ATSC card "
 385                        "isn't supported yet\n");
 386                 break;
 387         }
 388         if (NULL == dvb->frontend) {
 389                 printk(KERN_ERR "%s() Frontend initialization failed\n",
 390                        __func__);
 391                 return -1;
 392         }
 393
 394         /* register everything */
 395         ret = dvb_register(dev);
 396         if (ret < 0) {
 397                 if (dvb->frontend->ops.release)
 398                         dvb->frontend->ops.release(dvb->frontend);
 399                 return ret;
 400         }
 401
 402         return 0;
 403 }