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

   1 /*
   2  *  Driver for the Auvitek USB bridge
   3  *
   4  *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
   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 u8 hauppauge_hvr950q_led_states[] = {
  40         0x00, /* off */
  41         0x02, /* yellow */
  42         0x04, /* green */
  43 };
  44
  45 static struct au8522_led_config hauppauge_hvr950q_led_cfg = {
  46         .gpio_output = 0x00e0,
  47         .gpio_output_enable  = 0x6006,
  48         .gpio_output_disable = 0x0660,
  49
  50         .gpio_leds = 0x00e2,
  51         .led_states  = hauppauge_hvr950q_led_states,
  52         .num_led_states = sizeof(hauppauge_hvr950q_led_states),
  53
  54         .vsb8_strong   = 20 /* dB */ * 10,
  55         .qam64_strong  = 25 /* dB */ * 10,
  56         .qam256_strong = 32 /* dB */ * 10,
  57 };
  58
  59 static struct au8522_config hauppauge_hvr950q_config = {
  60         .demod_address = 0x8e >> 1,
  61         .status_mode   = AU8522_DEMODLOCKING,
  62         .qam_if        = AU8522_IF_6MHZ,
  63         .vsb_if        = AU8522_IF_6MHZ,
  64         .led_cfg       = &hauppauge_hvr950q_led_cfg,
  65 };
  66
  67 static struct au8522_config fusionhdtv7usb_config = {
  68         .demod_address = 0x8e >> 1,
  69         .status_mode   = AU8522_DEMODLOCKING,
  70         .qam_if        = AU8522_IF_6MHZ,
  71         .vsb_if        = AU8522_IF_6MHZ,
  72 };
  73
  74 static struct au8522_config hauppauge_woodbury_config = {
  75         .demod_address = 0x8e >> 1,
  76         .status_mode   = AU8522_DEMODLOCKING,
  77         .qam_if        = AU8522_IF_4MHZ,
  78         .vsb_if        = AU8522_IF_3_25MHZ,
  79 };
  80
  81 static struct xc5000_config hauppauge_hvr950q_tunerconfig = {
  82         .i2c_address      = 0x61,
  83         .if_khz           = 6000,
  84 };
  85
  86 static struct mxl5007t_config mxl5007t_hvr950q_config = {
  87         .xtal_freq_hz = MxL_XTAL_24_MHZ,
  88         .if_freq_hz = MxL_IF_6_MHZ,
  89 };
  90
  91 static struct tda18271_config hauppauge_woodbury_tunerconfig = {
  92         .gate    = TDA18271_GATE_DIGITAL,
  93 };
  94
  95 /*-------------------------------------------------------------------*/
  96 static void urb_completion(struct urb *purb)
  97 {
  98         u8 *ptr;
  99         struct au0828_dev *dev = purb->context;
 100         int ptype = usb_pipetype(purb->pipe);
 101
 102         dprintk(2, "%s()\n", __func__);
 103
 104         if (!dev)
 105                 return;
 106
 107         if (dev->urb_streaming == 0)
 108                 return;
 109
 110         if (ptype != PIPE_BULK) {
 111                 printk(KERN_ERR "%s() Unsupported URB type %d\n",
 112                        __func__, ptype);
 113                 return;
 114         }
 115
 116         ptr = (u8 *)purb->transfer_buffer;
 117
 118         /* Feed the transport payload into the kernel demux */
 119         dvb_dmx_swfilter_packets(&dev->dvb.demux,
 120                 purb->transfer_buffer, purb->actual_length / 188);
 121
 122         /* Clean the buffer before we requeue */
 123         memset(purb->transfer_buffer, 0, URB_BUFSIZE);
 124
 125         /* Requeue URB */
 126         usb_submit_urb(purb, GFP_ATOMIC);
 127 }
 128
 129 static int stop_urb_transfer(struct au0828_dev *dev)
 130 {
 131         int i;
 132
 133         dprintk(2, "%s()\n", __func__);
 134
 135         for (i = 0; i < URB_COUNT; i++) {
 136                 usb_kill_urb(dev->urbs[i]);
 137                 kfree(dev->urbs[i]->transfer_buffer);
 138                 usb_free_urb(dev->urbs[i]);
 139         }
 140
 141         dev->urb_streaming = 0;
 142
 143         return 0;
 144 }
 145
 146 static int start_urb_transfer(struct au0828_dev *dev)
 147 {
 148         struct urb *purb;
 149         int i, ret = -ENOMEM;
 150
 151         dprintk(2, "%s()\n", __func__);
 152
 153         if (dev->urb_streaming) {
 154                 dprintk(2, "%s: bulk xfer already running!\n", __func__);
 155                 return 0;
 156         }
 157
 158         for (i = 0; i < URB_COUNT; i++) {
 159
 160                 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
 161                 if (!dev->urbs[i])
 162                         goto err;
 163
 164                 purb = dev->urbs[i];
 165
 166                 purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
 167                 if (!purb->transfer_buffer) {
 168                         usb_free_urb(purb);
 169                         dev->urbs[i] = NULL;
 170                         goto err;
 171                 }
 172
 173                 purb->status = -EINPROGRESS;
 174                 usb_fill_bulk_urb(purb,
 175                                   dev->usbdev,
 176                                   usb_rcvbulkpipe(dev->usbdev,
 177                                         _AU0828_BULKPIPE),
 178                                   purb->transfer_buffer,
 179                                   URB_BUFSIZE,
 180                                   urb_completion,
 181                                   dev);
 182
 183         }
 184
 185         for (i = 0; i < URB_COUNT; i++) {
 186                 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
 187                 if (ret != 0) {
 188                         stop_urb_transfer(dev);
 189                         printk(KERN_ERR "%s: failed urb submission, "
 190                                "err = %d\n", __func__, ret);
 191                         return ret;
 192                 }
 193         }
 194
 195         dev->urb_streaming = 1;
 196         ret = 0;
 197
 198 err:
 199         return ret;
 200 }
 201
 202 static int au0828_dvb_start_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 (!demux->dmx.frontend)
 212                 return -EINVAL;
 213
 214         if (dvb) {
 215                 mutex_lock(&dvb->lock);
 216                 if (dvb->feeding++ == 0) {
 217                         /* Start transport */
 218                         au0828_write(dev, 0x608, 0x90);
 219                         au0828_write(dev, 0x609, 0x72);
 220                         au0828_write(dev, 0x60a, 0x71);
 221                         au0828_write(dev, 0x60b, 0x01);
 222                         ret = start_urb_transfer(dev);
 223                 }
 224                 mutex_unlock(&dvb->lock);
 225         }
 226
 227         return ret;
 228 }
 229
 230 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
 231 {
 232         struct dvb_demux *demux = feed->demux;
 233         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 234         struct au0828_dvb *dvb = &dev->dvb;
 235         int ret = 0;
 236
 237         dprintk(1, "%s()\n", __func__);
 238
 239         if (dvb) {
 240                 mutex_lock(&dvb->lock);
 241                 if (--dvb->feeding == 0) {
 242                         /* Stop transport */
 243                         au0828_write(dev, 0x608, 0x00);
 244                         au0828_write(dev, 0x609, 0x00);
 245                         au0828_write(dev, 0x60a, 0x00);
 246                         au0828_write(dev, 0x60b, 0x00);
 247                         ret = stop_urb_transfer(dev);
 248                 }
 249                 mutex_unlock(&dvb->lock);
 250         }
 251
 252         return ret;
 253 }
 254
 255 static int dvb_register(struct au0828_dev *dev)
 256 {
 257         struct au0828_dvb *dvb = &dev->dvb;
 258         int result;
 259
 260         dprintk(1, "%s()\n", __func__);
 261
 262         /* register adapter */
 263         result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
 264                                       &dev->usbdev->dev, adapter_nr);
 265         if (result < 0) {
 266                 printk(KERN_ERR "%s: dvb_register_adapter failed "
 267                        "(errno = %d)\n", DRIVER_NAME, result);
 268                 goto fail_adapter;
 269         }
 270         dvb->adapter.priv = dev;
 271
 272         /* register frontend */
 273         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 274         if (result < 0) {
 275                 printk(KERN_ERR "%s: dvb_register_frontend failed "
 276                        "(errno = %d)\n", DRIVER_NAME, result);
 277                 goto fail_frontend;
 278         }
 279
 280         /* register demux stuff */
 281         dvb->demux.dmx.capabilities =
 282                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 283                 DMX_MEMORY_BASED_FILTERING;
 284         dvb->demux.priv       = dev;
 285         dvb->demux.filternum  = 256;
 286         dvb->demux.feednum    = 256;
 287         dvb->demux.start_feed = au0828_dvb_start_feed;
 288         dvb->demux.stop_feed  = au0828_dvb_stop_feed;
 289         result = dvb_dmx_init(&dvb->demux);
 290         if (result < 0) {
 291                 printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
 292                        DRIVER_NAME, result);
 293                 goto fail_dmx;
 294         }
 295
 296         dvb->dmxdev.filternum    = 256;
 297         dvb->dmxdev.demux        = &dvb->demux.dmx;
 298         dvb->dmxdev.capabilities = 0;
 299         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 300         if (result < 0) {
 301                 printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
 302                        DRIVER_NAME, result);
 303                 goto fail_dmxdev;
 304         }
 305
 306         dvb->fe_hw.source = DMX_FRONTEND_0;
 307         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 308         if (result < 0) {
 309                 printk(KERN_ERR "%s: add_frontend failed "
 310                        "(DMX_FRONTEND_0, errno = %d)\n", DRIVER_NAME, result);
 311                 goto fail_fe_hw;
 312         }
 313
 314         dvb->fe_mem.source = DMX_MEMORY_FE;
 315         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 316         if (result < 0) {
 317                 printk(KERN_ERR "%s: add_frontend failed "
 318                        "(DMX_MEMORY_FE, errno = %d)\n", DRIVER_NAME, result);
 319                 goto fail_fe_mem;
 320         }
 321
 322         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 323         if (result < 0) {
 324                 printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
 325                        DRIVER_NAME, result);
 326                 goto fail_fe_conn;
 327         }
 328
 329         /* register network adapter */
 330         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 331         return 0;
 332
 333 fail_fe_conn:
 334         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 335 fail_fe_mem:
 336         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 337 fail_fe_hw:
 338         dvb_dmxdev_release(&dvb->dmxdev);
 339 fail_dmxdev:
 340         dvb_dmx_release(&dvb->demux);
 341 fail_dmx:
 342         dvb_unregister_frontend(dvb->frontend);
 343 fail_frontend:
 344         dvb_frontend_detach(dvb->frontend);
 345         dvb_unregister_adapter(&dvb->adapter);
 346 fail_adapter:
 347         return result;
 348 }
 349
 350 void au0828_dvb_unregister(struct au0828_dev *dev)
 351 {
 352         struct au0828_dvb *dvb = &dev->dvb;
 353
 354         dprintk(1, "%s()\n", __func__);
 355
 356         if (dvb->frontend == NULL)
 357                 return;
 358
 359         dvb_net_release(&dvb->net);
 360         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 361         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 362         dvb_dmxdev_release(&dvb->dmxdev);
 363         dvb_dmx_release(&dvb->demux);
 364         dvb_unregister_frontend(dvb->frontend);
 365         dvb_frontend_detach(dvb->frontend);
 366         dvb_unregister_adapter(&dvb->adapter);
 367 }
 368
 369 /* All the DVB attach calls go here, this function get's modified
 370  * for each new card. No other function in this file needs
 371  * to change.
 372  */
 373 int au0828_dvb_register(struct au0828_dev *dev)
 374 {
 375         struct au0828_dvb *dvb = &dev->dvb;
 376         int ret;
 377
 378         dprintk(1, "%s()\n", __func__);
 379
 380         /* init frontend */
 381         switch (dev->boardnr) {
 382         case AU0828_BOARD_HAUPPAUGE_HVR850:
 383         case AU0828_BOARD_HAUPPAUGE_HVR950Q:
 384                 dvb->frontend = dvb_attach(au8522_attach,
 385                                 &hauppauge_hvr950q_config,
 386                                 &dev->i2c_adap);
 387                 if (dvb->frontend != NULL)
 388                         dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap,
 389                                    &hauppauge_hvr950q_tunerconfig);
 390                 break;
 391         case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:
 392                 dvb->frontend = dvb_attach(au8522_attach,
 393                                 &hauppauge_hvr950q_config,
 394                                 &dev->i2c_adap);
 395                 if (dvb->frontend != NULL)
 396                         dvb_attach(mxl5007t_attach, dvb->frontend,
 397                                    &dev->i2c_adap, 0x60,
 398                                    &mxl5007t_hvr950q_config);
 399                 break;
 400         case AU0828_BOARD_HAUPPAUGE_WOODBURY:
 401                 dvb->frontend = dvb_attach(au8522_attach,
 402                                 &hauppauge_woodbury_config,
 403                                 &dev->i2c_adap);
 404                 if (dvb->frontend != NULL)
 405                         dvb_attach(tda18271_attach, dvb->frontend,
 406                                    0x60, &dev->i2c_adap,
 407                                    &hauppauge_woodbury_tunerconfig);
 408                 break;
 409         case AU0828_BOARD_DVICO_FUSIONHDTV7:
 410                 dvb->frontend = dvb_attach(au8522_attach,
 411                                 &fusionhdtv7usb_config,
 412                                 &dev->i2c_adap);
 413                 if (dvb->frontend != NULL) {
 414                         dvb_attach(xc5000_attach, dvb->frontend,
 415                                 &dev->i2c_adap,
 416                                 &hauppauge_hvr950q_tunerconfig);
 417                 }
 418                 break;
 419         default:
 420                 printk(KERN_WARNING "The frontend of your DVB/ATSC card "
 421                        "isn't supported yet\n");
 422                 break;
 423         }
 424         if (NULL == dvb->frontend) {
 425                 printk(KERN_ERR "%s() Frontend initialization failed\n",
 426                        __func__);
 427                 return -1;
 428         }
 429         /* define general-purpose callback pointer */
 430         dvb->frontend->callback = au0828_tuner_callback;
 431
 432         /* register everything */
 433         ret = dvb_register(dev);
 434         if (ret < 0) {
 435                 if (dvb->frontend->ops.release)
 436                         dvb->frontend->ops.release(dvb->frontend);
 437                 return ret;
 438         }
 439
 440         return 0;
 441 }