drivers/media/dvb/cinergyT2/cinergyT2.c

   1 /*
   2  * TerraTec Cinergy T²/qanu USB2 DVB-T adapter.
   3  *
   4  * Copyright (C) 2004 Daniel Mack <daniel@qanu.de> and
   5  *                  Holger Waechtler <holger@qanu.de>
   6  *
   7  *  Protocol Spec published on http://qanu.de/specs/terratec_cinergyT2.pdf
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  */
  24
  25 #include <linux/config.h>
  26 #include <linux/init.h>
  27 #include <linux/module.h>
  28 #include <linux/version.h>
  29 #include <linux/slab.h>
  30 #include <linux/usb.h>
  31 #include <linux/pci.h>
  32 #include <linux/input.h>
  33 #include <linux/dvb/frontend.h>
  34
  35 #include "dmxdev.h"
  36 #include "dvb_demux.h"
  37 #include "dvb_net.h"
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47 #ifdef CONFIG_DVB_CINERGYT2_TUNING
  48         #define STREAM_URB_COUNT (CONFIG_DVB_CINERGYT2_STREAM_URB_COUNT)
  49         #define STREAM_BUF_SIZE (CONFIG_DVB_CINERGYT2_STREAM_BUF_SIZE)
  50         #define QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_QUERY_INTERVAL)
  51         #ifdef CONFIG_DVB_CINERGYT2_ENABLE_RC_INPUT_DEVICE
  52                 #define RC_QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_RC_QUERY_INTERVAL)
  53                 #define ENABLE_RC (1)
  54         #endif
  55 #else
  56         #define STREAM_URB_COUNT (32)
  57         #define STREAM_BUF_SIZE (512)   /* bytes */
  58         #define ENABLE_RC (1)
  59         #define RC_QUERY_INTERVAL (100) /* milliseconds */
  60         #define QUERY_INTERVAL (333)    /* milliseconds */
  61 #endif
  62
  63 #define DRIVER_NAME "TerraTec/qanu USB2.0 Highspeed DVB-T Receiver"
  64
  65 static int debug;
  66 module_param_named(debug, debug, int, 0644);
  67 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
  68
  69 #define dprintk(level, args...) \
  70 do {                                                                    \
  71         if ((debug & level)) {                                          \
  72                 printk("%s: %s(): ", __stringify(KBUILD_MODNAME),       \
  73                        __FUNCTION__);                                   \
  74                 printk(args); }                                         \
  75 } while (0)
  76
  77 enum cinergyt2_ep1_cmd {
  78         CINERGYT2_EP1_PID_TABLE_RESET           = 0x01,
  79         CINERGYT2_EP1_PID_SETUP                 = 0x02,
  80         CINERGYT2_EP1_CONTROL_STREAM_TRANSFER   = 0x03,
  81         CINERGYT2_EP1_SET_TUNER_PARAMETERS      = 0x04,
  82         CINERGYT2_EP1_GET_TUNER_STATUS          = 0x05,
  83         CINERGYT2_EP1_START_SCAN                = 0x06,
  84         CINERGYT2_EP1_CONTINUE_SCAN             = 0x07,
  85         CINERGYT2_EP1_GET_RC_EVENTS             = 0x08,
  86         CINERGYT2_EP1_SLEEP_MODE                = 0x09
  87 };
  88
  89 struct dvbt_set_parameters_msg {
  90         uint8_t cmd;
  91         uint32_t freq;
  92         uint8_t bandwidth;
  93         uint16_t tps;
  94         uint8_t flags;
  95 } __attribute__((packed));
  96
  97 struct dvbt_get_status_msg {
  98         uint32_t freq;
  99         uint8_t bandwidth;
 100         uint16_t tps;
 101         uint8_t flags;
 102         uint16_t gain;
 103         uint8_t snr;
 104         uint32_t viterbi_error_rate;
 105         uint32_t rs_error_rate;
 106         uint32_t uncorrected_block_count;
 107         uint8_t lock_bits;
 108         uint8_t prev_lock_bits;
 109 } __attribute__((packed));
 110
 111 static struct dvb_frontend_info cinergyt2_fe_info = {
 112         .name = DRIVER_NAME,
 113         .type = FE_OFDM,
 114         .frequency_min = 174000000,
 115         .frequency_max = 862000000,
 116         .frequency_stepsize = 166667,
 117         .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
 118                 FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
 119                 FE_CAN_FEC_AUTO |
 120                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 121                 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
 122                 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS
 123 };
 124
 125 struct cinergyt2 {
 126         struct dvb_demux demux;
 127         struct usb_device *udev;
 128         struct semaphore sem;
 129         struct dvb_adapter *adapter;
 130         struct dvb_device *fedev;
 131         struct dmxdev dmxdev;
 132         struct dvb_net dvbnet;
 133
 134         int streaming;
 135         int sleeping;
 136
 137         struct dvbt_set_parameters_msg param;
 138         struct dvbt_get_status_msg status;
 139         struct work_struct query_work;
 140
 141         wait_queue_head_t poll_wq;
 142         int pending_fe_events;
 143
 144         void *streambuf;
 145         dma_addr_t streambuf_dmahandle;
 146         struct urb *stream_urb[STREAM_URB_COUNT];
 147
 148 #ifdef ENABLE_RC
 149         struct input_dev rc_input_dev;
 150         struct work_struct rc_query_work;
 151         int rc_input_event;
 152 #endif
 153 };
 154
 155 enum {
 156         CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
 157         CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
 158         CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
 159 };
 160
 161 struct cinergyt2_rc_event {
 162         char type;
 163         uint32_t value;
 164 } __attribute__((packed));
 165
 166 static const uint32_t rc_keys [] = {
 167         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfe01eb04,     KEY_POWER,
 168         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfd02eb04,     KEY_1,
 169         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfc03eb04,     KEY_2,
 170         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfb04eb04,     KEY_3,
 171         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfa05eb04,     KEY_4,
 172         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf906eb04,     KEY_5,
 173         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf807eb04,     KEY_6,
 174         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf708eb04,     KEY_7,
 175         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf609eb04,     KEY_8,
 176         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf50aeb04,     KEY_9,
 177         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf30ceb04,     KEY_0,
 178         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf40beb04,     KEY_VIDEO,
 179         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf20deb04,     KEY_REFRESH,
 180         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf10eeb04,     KEY_SELECT,
 181         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf00feb04,     KEY_EPG,
 182         CINERGYT2_RC_EVENT_TYPE_NEC,    0xef10eb04,     KEY_UP,
 183         CINERGYT2_RC_EVENT_TYPE_NEC,    0xeb14eb04,     KEY_DOWN,
 184         CINERGYT2_RC_EVENT_TYPE_NEC,    0xee11eb04,     KEY_LEFT,
 185         CINERGYT2_RC_EVENT_TYPE_NEC,    0xec13eb04,     KEY_RIGHT,
 186         CINERGYT2_RC_EVENT_TYPE_NEC,    0xed12eb04,     KEY_OK,
 187         CINERGYT2_RC_EVENT_TYPE_NEC,    0xea15eb04,     KEY_TEXT,
 188         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe916eb04,     KEY_INFO,
 189         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe817eb04,     KEY_RED,
 190         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe718eb04,     KEY_GREEN,
 191         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe619eb04,     KEY_YELLOW,
 192         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe51aeb04,     KEY_BLUE,
 193         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe31ceb04,     KEY_VOLUMEUP,
 194         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe11eeb04,     KEY_VOLUMEDOWN,
 195         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe21deb04,     KEY_MUTE,
 196         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe41beb04,     KEY_CHANNELUP,
 197         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe01feb04,     KEY_CHANNELDOWN,
 198         CINERGYT2_RC_EVENT_TYPE_NEC,    0xbf40eb04,     KEY_PAUSE,
 199         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb34ceb04,     KEY_PLAY,
 200         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa758eb04,     KEY_RECORD,
 201         CINERGYT2_RC_EVENT_TYPE_NEC,    0xab54eb04,     KEY_PREVIOUS,
 202         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb748eb04,     KEY_STOP,
 203         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa35ceb04,     KEY_NEXT
 204 };
 205
 206 static int cinergyt2_command (struct cinergyt2 *cinergyt2,
 207                     char *send_buf, int send_buf_len,
 208                               char *recv_buf, int recv_buf_len)
 209 {
 210         int actual_len;
 211         char dummy;
 212         int ret;
 213
 214         ret = usb_bulk_msg(cinergyt2->udev, usb_sndbulkpipe(cinergyt2->udev, 1),
 215                            send_buf, send_buf_len, &actual_len, HZ);
 216
 217         if (ret)
 218                 dprintk(1, "usb_bulk_msg (send) failed, err %i\n", ret);
 219
 220         if (!recv_buf)
 221                 recv_buf = &dummy;
 222
 223         ret = usb_bulk_msg(cinergyt2->udev, usb_rcvbulkpipe(cinergyt2->udev, 1),
 224                            recv_buf, recv_buf_len, &actual_len, HZ);
 225
 226         if (ret)
 227                 dprintk(1, "usb_bulk_msg (read) failed, err %i\n", ret);
 228
 229         return ret ? ret : actual_len;
 230 }
 231
 232 static void cinergyt2_control_stream_transfer (struct cinergyt2 *cinergyt2, int enable)
 233 {
 234         char buf [] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
 235         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 236 }
 237
 238 static void cinergyt2_sleep (struct cinergyt2 *cinergyt2, int sleep)
 239 {
 240         char buf [] = { CINERGYT2_EP1_SLEEP_MODE, sleep ? 1 : 0 };
 241         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 242         cinergyt2->sleeping = sleep;
 243 }
 244
 245 static void cinergyt2_stream_irq (struct urb *urb, struct pt_regs *regs);
 246
 247 static int cinergyt2_submit_stream_urb (struct cinergyt2 *cinergyt2, struct urb *urb)
 248 {
 249         int err;
 250
 251         usb_fill_bulk_urb(urb,
 252                           cinergyt2->udev,
 253                           usb_rcvbulkpipe(cinergyt2->udev, 0x2),
 254                           urb->transfer_buffer,
 255                           STREAM_BUF_SIZE,
 256                           cinergyt2_stream_irq,
 257                           cinergyt2);
 258
 259         if ((err = usb_submit_urb(urb, GFP_ATOMIC)))
 260                 dprintk(1, "urb submission failed (err = %i)!\n", err);
 261
 262         return err;
 263 }
 264
 265 static void cinergyt2_stream_irq (struct urb *urb, struct pt_regs *regs)
 266 {
 267         struct cinergyt2 *cinergyt2 = urb->context;
 268
 269         if (urb->actual_length > 0)
 270                 dvb_dmx_swfilter(&cinergyt2->demux,
 271                                  urb->transfer_buffer, urb->actual_length);
 272
 273         if (cinergyt2->streaming)
 274                 cinergyt2_submit_stream_urb(cinergyt2, urb);
 275 }
 276
 277 static void cinergyt2_free_stream_urbs (struct cinergyt2 *cinergyt2)
 278 {
 279         int i;
 280
 281         for (i=0; i<STREAM_URB_COUNT; i++)
 282                 if (cinergyt2->stream_urb[i])
 283                         usb_free_urb(cinergyt2->stream_urb[i]);
 284
 285         pci_free_consistent(NULL, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 286                             cinergyt2->streambuf, cinergyt2->streambuf_dmahandle);
 287 }
 288
 289 static int cinergyt2_alloc_stream_urbs (struct cinergyt2 *cinergyt2)
 290 {
 291         int i;
 292
 293         cinergyt2->streambuf = pci_alloc_consistent(NULL,
 294                                               STREAM_URB_COUNT*STREAM_BUF_SIZE,
 295                                               &cinergyt2->streambuf_dmahandle);
 296         if (!cinergyt2->streambuf) {
 297                 dprintk(1, "failed to alloc consistent stream memory area, bailing out!\n");
 298                 return -ENOMEM;
 299         }
 300
 301         memset(cinergyt2->streambuf, 0, STREAM_URB_COUNT*STREAM_BUF_SIZE);
 302
 303         for (i=0; i<STREAM_URB_COUNT; i++) {
 304                 struct urb *urb;
 305
 306                 if (!(urb = usb_alloc_urb(0, GFP_ATOMIC))) {
 307                         dprintk(1, "failed to alloc consistent stream urbs, bailing out!\n");
 308                         cinergyt2_free_stream_urbs(cinergyt2);
 309                         return -ENOMEM;
 310                 }
 311
 312                 urb->transfer_buffer = cinergyt2->streambuf + i * STREAM_BUF_SIZE;
 313                 urb->transfer_buffer_length = STREAM_BUF_SIZE;
 314
 315                 cinergyt2->stream_urb[i] = urb;
 316         }
 317
 318         return 0;
 319 }
 320
 321 static void cinergyt2_stop_stream_xfer (struct cinergyt2 *cinergyt2)
 322 {
 323         int i;
 324
 325         cinergyt2_control_stream_transfer(cinergyt2, 0);
 326
 327         for (i=0; i<STREAM_URB_COUNT; i++)
 328                 if (cinergyt2->stream_urb[i])
 329                         usb_kill_urb(cinergyt2->stream_urb[i]);
 330 }
 331
 332 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
 333 {
 334         int i, err;
 335
 336         for (i=0; i<STREAM_URB_COUNT; i++) {
 337                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
 338                         cinergyt2_stop_stream_xfer(cinergyt2);
 339                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
 340                         return err;
 341                 }
 342         }
 343
 344         cinergyt2_control_stream_transfer(cinergyt2, 1);
 345         return 0;
 346 }
 347
 348 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 349 {
 350         struct dvb_demux *demux = dvbdmxfeed->demux;
 351         struct cinergyt2 *cinergyt2 = demux->priv;
 352
 353         if (down_interruptible(&cinergyt2->sem))
 354                 return -ERESTARTSYS;
 355
 356         if (cinergyt2->streaming == 0)
 357                 cinergyt2_start_stream_xfer(cinergyt2);
 358
 359         cinergyt2->streaming++;
 360         up(&cinergyt2->sem);
 361         return 0;
 362 }
 363
 364 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 365 {
 366         struct dvb_demux *demux = dvbdmxfeed->demux;
 367         struct cinergyt2 *cinergyt2 = demux->priv;
 368
 369         if (down_interruptible(&cinergyt2->sem))
 370                 return -ERESTARTSYS;
 371
 372         if (--cinergyt2->streaming == 0)
 373                 cinergyt2_stop_stream_xfer(cinergyt2);
 374
 375         up(&cinergyt2->sem);
 376         return 0;
 377 }
 378
 379 /**
 380  *  convert linux-dvb frontend parameter set into TPS.
 381  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
 382  *
 383  *  This function is probably reusable and may better get placed in a support
 384  *  library.
 385  *
 386  *  We replace errornous fields by default TPS fields (the ones with value 0).
 387  */
 388 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
 389 {
 390         struct dvb_ofdm_parameters *op = &p->u.ofdm;
 391         uint16_t tps = 0;
 392
 393         switch (op->code_rate_HP) {
 394                 case FEC_2_3:
 395                         tps |= (1 << 7);
 396                         break;
 397                 case FEC_3_4:
 398                         tps |= (2 << 7);
 399                         break;
 400                 case FEC_5_6:
 401                         tps |= (3 << 7);
 402                         break;
 403                 case FEC_7_8:
 404                         tps |= (4 << 7);
 405                         break;
 406                 case FEC_1_2:
 407                 case FEC_AUTO:
 408                 default:
 409                         /* tps |= (0 << 7) */;
 410         }
 411
 412         switch (op->code_rate_LP) {
 413                 case FEC_2_3:
 414                         tps |= (1 << 4);
 415                         break;
 416                 case FEC_3_4:
 417                         tps |= (2 << 4);
 418                         break;
 419                 case FEC_5_6:
 420                         tps |= (3 << 4);
 421                         break;
 422                 case FEC_7_8:
 423                         tps |= (4 << 4);
 424                         break;
 425                 case FEC_1_2:
 426                 case FEC_AUTO:
 427                 default:
 428                         /* tps |= (0 << 4) */;
 429         }
 430
 431         switch (op->constellation) {
 432                 case QAM_16:
 433                         tps |= (1 << 13);
 434                         break;
 435                 case QAM_64:
 436                         tps |= (2 << 13);
 437                         break;
 438                 case QPSK:
 439                 default:
 440                         /* tps |= (0 << 13) */;
 441         }
 442
 443         switch (op->transmission_mode) {
 444                 case TRANSMISSION_MODE_8K:
 445                         tps |= (1 << 0);
 446                         break;
 447                 case TRANSMISSION_MODE_2K:
 448                 default:
 449                         /* tps |= (0 << 0) */;
 450         }
 451
 452         switch (op->guard_interval) {
 453                 case GUARD_INTERVAL_1_16:
 454                         tps |= (1 << 2);
 455                         break;
 456                 case GUARD_INTERVAL_1_8:
 457                         tps |= (2 << 2);
 458                         break;
 459                 case GUARD_INTERVAL_1_4:
 460                         tps |= (3 << 2);
 461                         break;
 462                 case GUARD_INTERVAL_1_32:
 463                 default:
 464                         /* tps |= (0 << 2) */;
 465         }
 466
 467         switch (op->hierarchy_information) {
 468                 case HIERARCHY_1:
 469                         tps |= (1 << 10);
 470                         break;
 471                 case HIERARCHY_2:
 472                         tps |= (2 << 10);
 473                         break;
 474                 case HIERARCHY_4:
 475                         tps |= (3 << 10);
 476                         break;
 477                 case HIERARCHY_NONE:
 478                 default:
 479                         /* tps |= (0 << 10) */;
 480         }
 481
 482         return tps;
 483 }
 484
 485 static int cinergyt2_open (struct inode *inode, struct file *file)
 486 {
 487         struct dvb_device *dvbdev = file->private_data;
 488         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 489         int err;
 490
 491         if ((err = dvb_generic_open(inode, file)))
 492                 return err;
 493
 494         if (down_interruptible(&cinergyt2->sem))
 495                 return -ERESTARTSYS;
 496
 497         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 498                 cinergyt2_sleep(cinergyt2, 0);
 499                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 500 }
 501
 502         up(&cinergyt2->sem);
 503         return 0;
 504 }
 505
 506 static int cinergyt2_release (struct inode *inode, struct file *file)
 507 {
 508         struct dvb_device *dvbdev = file->private_data;
 509         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 510
 511         if (down_interruptible(&cinergyt2->sem))
 512                 return -ERESTARTSYS;
 513
 514         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 515                 cancel_delayed_work(&cinergyt2->query_work);
 516                 flush_scheduled_work();
 517                 cinergyt2_sleep(cinergyt2, 1);
 518         }
 519
 520         up(&cinergyt2->sem);
 521
 522         return dvb_generic_release(inode, file);
 523         }
 524
 525 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
 526         {
 527         struct dvb_device *dvbdev = file->private_data;
 528         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 529         poll_wait(file, &cinergyt2->poll_wq, wait);
 530         return (POLLIN | POLLRDNORM | POLLPRI);
 531         }
 532
 533
 534 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
 535                      unsigned cmd, unsigned long arg)
 536         {
 537         struct dvb_device *dvbdev = file->private_data;
 538         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 539         struct dvbt_get_status_msg *stat = &cinergyt2->status;
 540         fe_status_t status = 0;
 541
 542         switch (cmd) {
 543         case FE_GET_INFO:
 544                 return copy_to_user((void*) arg, &cinergyt2_fe_info,
 545                                     sizeof(struct dvb_frontend_info));
 546
 547         case FE_READ_STATUS:
 548                 if (0xffff - le16_to_cpu(stat->gain) > 30)
 549                         status |= FE_HAS_SIGNAL;
 550                 if (stat->lock_bits & (1 << 6))
 551                         status |= FE_HAS_LOCK;
 552                 if (stat->lock_bits & (1 << 5))
 553                         status |= FE_HAS_SYNC;
 554                 if (stat->lock_bits & (1 << 4))
 555                         status |= FE_HAS_CARRIER;
 556                 if (stat->lock_bits & (1 << 1))
 557                         status |= FE_HAS_VITERBI;
 558
 559                 return copy_to_user((void *) arg, &status, sizeof(status));
 560
 561         case FE_READ_BER:
 562                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
 563                                 (__u32 __user *) arg);
 564
 565         case FE_READ_SIGNAL_STRENGTH:
 566                 return put_user(0xffff - le16_to_cpu(stat->gain),
 567                                 (__u16 __user *) arg);
 568
 569         case FE_READ_SNR:
 570                 return put_user((stat->snr << 8) | stat->snr,
 571                                 (__u16 __user *) arg);
 572
 573         case FE_READ_UNCORRECTED_BLOCKS:
 574                 /* UNC are already converted to host byte order... */
 575                 return put_user(stat->uncorrected_block_count,
 576                                 (__u32 __user *) arg);
 577
 578         case FE_SET_FRONTEND:
 579         {
 580                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 581                 struct dvb_frontend_parameters p;
 582                 int err;
 583
 584                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
 585                         return -EPERM;
 586
 587                 if (copy_from_user(&p, (void *) arg, sizeof(p)))
 588                         return -EFAULT;
 589
 590                 if (down_interruptible(&cinergyt2->sem))
 591                         return -ERESTARTSYS;
 592
 593                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 594                 param->tps = cpu_to_le16(compute_tps(&p));
 595                 param->freq = cpu_to_le32(p.frequency / 1000);
 596                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
 597
 598                 stat->lock_bits = 0;
 599                 cinergyt2->pending_fe_events++;
 600                 wake_up_interruptible(&cinergyt2->poll_wq);
 601
 602                 err = cinergyt2_command(cinergyt2,
 603                                         (char *) param, sizeof(*param),
 604                                         NULL, 0);
 605
 606                 up(&cinergyt2->sem);
 607
 608                 return (err < 0) ? err : 0;
 609         }
 610
 611         case FE_GET_FRONTEND:
 612                 /**
 613                  *  trivial to implement (see struct dvbt_get_status_msg).
 614                  *  equivalent to FE_READ ioctls, but needs
 615                  *  TPS -> linux-dvb parameter set conversion. Feel free
 616                  *  to implement this and send us a patch if you need this
 617                  *  functionality.
 618                  */
 619                 break;
 620
 621         case FE_GET_EVENT:
 622         {
 623                 /**
 624                  *  for now we only fill the status field. the parameters
 625                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
 626                  */
 627                 struct dvb_frontend_event *e = (void *) arg;
 628                 if (cinergyt2->pending_fe_events == 0) {
 629                         if (file->f_flags & O_NONBLOCK)
 630                                 return -EWOULDBLOCK;
 631                         wait_event_interruptible(cinergyt2->poll_wq,
 632                                                  cinergyt2->pending_fe_events > 0);
 633                 }
 634                 cinergyt2->pending_fe_events = 0;
 635                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
 636                                         (unsigned long) &e->status);
 637         }
 638
 639         default:
 640                 ;
 641         }
 642
 643         return -EINVAL;
 644 }
 645
 646 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
 647 {
 648         struct dvb_device *dvbdev = file->private_data;
 649         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 650         int ret = 0;
 651
 652         lock_kernel();
 653
 654         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
 655                 ret = -EPERM;
 656                 goto bailout;
 657         }
 658
 659         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
 660                 ret = -EINVAL;
 661                 goto bailout;
 662         }
 663
 664         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 665         vma->vm_file = file;
 666
 667         ret = remap_pfn_range(vma, vma->vm_start,
 668                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
 669                               vma->vm_end - vma->vm_start,
 670                               vma->vm_page_prot) ? -EAGAIN : 0;
 671 bailout:
 672         unlock_kernel();
 673         return ret;
 674 }
 675
 676 static struct file_operations cinergyt2_fops = {
 677         .owner          = THIS_MODULE,
 678         .ioctl          = cinergyt2_ioctl,
 679         .poll           = cinergyt2_poll,
 680         .open           = cinergyt2_open,
 681         .release        = cinergyt2_release,
 682         .mmap           = cinergyt2_mmap
 683 };
 684
 685 static struct dvb_device cinergyt2_fe_template = {
 686         .users = ~0,
 687         .writers = 1,
 688         .readers = (~0)-1,
 689         .fops = &cinergyt2_fops
 690 };
 691
 692 #ifdef ENABLE_RC
 693 static void cinergyt2_query_rc (void *data)
 694 {
 695         struct cinergyt2 *cinergyt2 = (struct cinergyt2 *) data;
 696         char buf [1] = { CINERGYT2_EP1_GET_RC_EVENTS };
 697         struct cinergyt2_rc_event rc_events[12];
 698         int n, len;
 699
 700         if (down_interruptible(&cinergyt2->sem))
 701                 return;
 702
 703         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
 704                              (char *) rc_events, sizeof(rc_events));
 705
 706         for (n=0; len>0 && n<(len/sizeof(rc_events[0])); n++) {
 707                 int i;
 708
 709                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
 710                     rc_events[n].value == ~0)
 711                 {
 712                         /**
 713                          * keyrepeat bit. If we would handle this properly
 714                          * we would need to emit down events as long the
 715                          * keyrepeat goes, a up event if no further
 716                          * repeat bits occur. Would need a timer to implement
 717                          * and no other driver does this, so we simply
 718                          * emit the last key up/down sequence again.
 719                          */
 720                 } else {
 721                         cinergyt2->rc_input_event = KEY_MAX;
 722                         for (i=0; i<sizeof(rc_keys)/sizeof(rc_keys[0]); i+=3) {
 723                                 if (rc_keys[i+0] == rc_events[n].type &&
 724                                     rc_keys[i+1] == rc_events[n].value)
 725                                 {
 726                                         cinergyt2->rc_input_event = rc_keys[i+2];
 727                                         break;
 728                                 }
 729                         }
 730                 }
 731
 732                 if (cinergyt2->rc_input_event != KEY_MAX) {
 733                         input_report_key(&cinergyt2->rc_input_dev, cinergyt2->rc_input_event, 1);
 734                         input_report_key(&cinergyt2->rc_input_dev, cinergyt2->rc_input_event, 0);
 735                         input_sync(&cinergyt2->rc_input_dev);
 736                 }
 737         }
 738
 739         schedule_delayed_work(&cinergyt2->rc_query_work,
 740                               msecs_to_jiffies(RC_QUERY_INTERVAL));
 741
 742         up(&cinergyt2->sem);
 743 }
 744 #endif
 745
 746 static void cinergyt2_query (void *data)
 747 {
 748         struct cinergyt2 *cinergyt2 = (struct cinergyt2 *) data;
 749         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
 750         struct dvbt_get_status_msg *s = &cinergyt2->status;
 751         uint8_t lock_bits;
 752         uint32_t unc;
 753
 754         if (down_interruptible(&cinergyt2->sem))
 755                 return;
 756
 757         unc = s->uncorrected_block_count;
 758         lock_bits = s->lock_bits;
 759
 760         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
 761
 762         unc += le32_to_cpu(s->uncorrected_block_count);
 763         s->uncorrected_block_count = unc;
 764
 765         if (lock_bits != s->lock_bits) {
 766                 wake_up_interruptible(&cinergyt2->poll_wq);
 767                 cinergyt2->pending_fe_events++;
 768         }
 769
 770         schedule_delayed_work(&cinergyt2->query_work,
 771                               msecs_to_jiffies(QUERY_INTERVAL));
 772
 773         up(&cinergyt2->sem);
 774 }
 775
 776 static int cinergyt2_probe (struct usb_interface *intf,
 777                   const struct usb_device_id *id)
 778 {
 779         struct cinergyt2 *cinergyt2;
 780         int i, err;
 781
 782         if (!(cinergyt2 = kmalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
 783                 dprintk(1, "out of memory?!?\n");
 784                 return -ENOMEM;
 785         }
 786
 787         memset (cinergyt2, 0, sizeof (struct cinergyt2));
 788         usb_set_intfdata (intf, (void *) cinergyt2);
 789
 790         init_MUTEX(&cinergyt2->sem);
 791         init_waitqueue_head (&cinergyt2->poll_wq);
 792         INIT_WORK(&cinergyt2->query_work, cinergyt2_query, cinergyt2);
 793
 794         cinergyt2->udev = interface_to_usbdev(intf);
 795         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 796
 797         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
 798                 dprintk(1, "unable to allocate stream urbs\n");
 799                 kfree(cinergyt2);
 800                 return -ENOMEM;
 801         }
 802
 803         dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME, THIS_MODULE);
 804
 805         cinergyt2->demux.priv = cinergyt2;
 806         cinergyt2->demux.filternum = 256;
 807         cinergyt2->demux.feednum = 256;
 808         cinergyt2->demux.start_feed = cinergyt2_start_feed;
 809         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
 810         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
 811                                          DMX_SECTION_FILTERING |
 812                                          DMX_MEMORY_BASED_FILTERING;
 813
 814         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
 815                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
 816                 goto bailout;
 817         }
 818
 819         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
 820         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
 821         cinergyt2->dmxdev.capabilities = 0;
 822
 823         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, cinergyt2->adapter)) < 0) {
 824                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
 825                 goto bailout;
 826         }
 827
 828         if (dvb_net_init(cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
 829                 dprintk(1, "dvb_net_init() failed!\n");
 830
 831         dvb_register_device(cinergyt2->adapter, &cinergyt2->fedev,
 832                             &cinergyt2_fe_template, cinergyt2,
 833                             DVB_DEVICE_FRONTEND);
 834
 835 #ifdef ENABLE_RC
 836         init_input_dev(&cinergyt2->rc_input_dev);
 837
 838         cinergyt2->rc_input_dev.evbit[0] = BIT(EV_KEY);
 839         cinergyt2->rc_input_dev.keycodesize = sizeof(unsigned char);
 840         cinergyt2->rc_input_dev.keycodemax = KEY_MAX;
 841         cinergyt2->rc_input_dev.name = DRIVER_NAME " remote control";
 842
 843         for (i=0; i<sizeof(rc_keys)/sizeof(rc_keys[0]); i+=3)
 844                 set_bit(rc_keys[i+2], cinergyt2->rc_input_dev.keybit);
 845
 846         input_register_device(&cinergyt2->rc_input_dev);
 847
 848         cinergyt2->rc_input_event = KEY_MAX;
 849
 850         INIT_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc, cinergyt2);
 851         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 852 #endif
 853         return 0;
 854
 855 bailout:
 856         dvb_dmxdev_release(&cinergyt2->dmxdev);
 857         dvb_dmx_release(&cinergyt2->demux);
 858         dvb_unregister_adapter (cinergyt2->adapter);
 859         cinergyt2_free_stream_urbs (cinergyt2);
 860         kfree(cinergyt2);
 861         return -ENOMEM;
 862 }
 863
 864 static void cinergyt2_disconnect (struct usb_interface *intf)
 865 {
 866         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 867
 868         if (down_interruptible(&cinergyt2->sem))
 869                 return;
 870
 871 #ifdef ENABLE_RC
 872         cancel_delayed_work(&cinergyt2->rc_query_work);
 873         flush_scheduled_work();
 874         input_unregister_device(&cinergyt2->rc_input_dev);
 875 #endif
 876
 877         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
 878         dvb_net_release(&cinergyt2->dvbnet);
 879         dvb_dmxdev_release(&cinergyt2->dmxdev);
 880         dvb_dmx_release(&cinergyt2->demux);
 881
 882         dvb_unregister_device(cinergyt2->fedev);
 883         dvb_unregister_adapter(cinergyt2->adapter);
 884
 885         cinergyt2_free_stream_urbs(cinergyt2);
 886         up(&cinergyt2->sem);
 887         kfree(cinergyt2);
 888 }
 889
 890 static int cinergyt2_suspend (struct usb_interface *intf, u32 state)
 891 {
 892         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 893
 894         if (down_interruptible(&cinergyt2->sem))
 895                 return -ERESTARTSYS;
 896
 897         if (state > 0) {        /* state 0 seems to mean DEVICE_PM_ON */
 898                 struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 899 #ifdef ENABLE_RC
 900                 cancel_delayed_work(&cinergyt2->rc_query_work);
 901 #endif
 902                 cancel_delayed_work(&cinergyt2->query_work);
 903                 if (cinergyt2->streaming)
 904                         cinergyt2_stop_stream_xfer(cinergyt2);
 905                 flush_scheduled_work();
 906                 cinergyt2_sleep(cinergyt2, 1);
 907         }
 908
 909         up(&cinergyt2->sem);
 910         return 0;
 911 }
 912
 913 static int cinergyt2_resume (struct usb_interface *intf)
 914 {
 915         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 916         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 917
 918         if (down_interruptible(&cinergyt2->sem))
 919                 return -ERESTARTSYS;
 920
 921         if (!cinergyt2->sleeping) {
 922                 cinergyt2_sleep(cinergyt2, 0);
 923                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
 924                 if (cinergyt2->streaming)
 925                         cinergyt2_start_stream_xfer(cinergyt2);
 926                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 927         }
 928
 929 #ifdef ENABLE_RC
 930         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 931 #endif
 932         up(&cinergyt2->sem);
 933         return 0;
 934 }
 935
 936 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
 937         { USB_DEVICE(0x0ccd, 0x0038) },
 938         { 0 }
 939 };
 940
 941 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
 942
 943 static struct usb_driver cinergyt2_driver = {
 944         .owner          = THIS_MODULE,
 945         .name   = "cinergyT2",
 946         .probe          = cinergyt2_probe,
 947         .disconnect     = cinergyt2_disconnect,
 948         .suspend        = cinergyt2_suspend,
 949         .resume         = cinergyt2_resume,
 950         .id_table       = cinergyt2_table
 951 };
 952
 953 static int __init cinergyt2_init (void)
 954 {
 955         int err;
 956
 957         if ((err = usb_register(&cinergyt2_driver)) < 0)
 958                 dprintk(1, "usb_register() failed! (err %i)\n", err);
 959
 960         return err;
 961 }
 962
 963 static void __exit cinergyt2_exit (void)
 964 {
 965         usb_deregister(&cinergyt2_driver);
 966 }
 967
 968 module_init (cinergyt2_init);
 969 module_exit (cinergyt2_exit);
 970
 971 MODULE_LICENSE("GPL");
 972 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");
 973