git.oblomov.eu Git - linux-2.6/blob - 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/init.h>
  26 #include <linux/module.h>
  27 #include <linux/slab.h>
  28 #include <linux/usb.h>
  29 #include <linux/input.h>
  30 #include <linux/dvb/frontend.h>
  31 #include <linux/mutex.h>
  32 #include <linux/mm.h>
  33 #include <asm/io.h>
  34
  35 #include "dmxdev.h"
  36 #include "dvb_demux.h"
  37 #include "dvb_net.h"
  38
  39 #ifdef CONFIG_DVB_CINERGYT2_TUNING
  40         #define STREAM_URB_COUNT (CONFIG_DVB_CINERGYT2_STREAM_URB_COUNT)
  41         #define STREAM_BUF_SIZE (CONFIG_DVB_CINERGYT2_STREAM_BUF_SIZE)
  42         #define QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_QUERY_INTERVAL)
  43         #ifdef CONFIG_DVB_CINERGYT2_ENABLE_RC_INPUT_DEVICE
  44                 #define RC_QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_RC_QUERY_INTERVAL)
  45                 #define ENABLE_RC (1)
  46         #endif
  47 #else
  48         #define STREAM_URB_COUNT (32)
  49         #define STREAM_BUF_SIZE (512)   /* bytes */
  50         #define ENABLE_RC (1)
  51         #define RC_QUERY_INTERVAL (50)  /* milliseconds */
  52         #define QUERY_INTERVAL (333)    /* milliseconds */
  53 #endif
  54
  55 #define DRIVER_NAME "TerraTec/qanu USB2.0 Highspeed DVB-T Receiver"
  56
  57 static int debug;
  58 module_param_named(debug, debug, int, 0644);
  59 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
  60
  61 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  62
  63 #define dprintk(level, args...)                                         \
  64 do {                                                                    \
  65         if ((debug & level)) {                                          \
  66                 printk("%s: %s(): ", KBUILD_MODNAME,                    \
  67                        __func__);                                       \
  68                 printk(args); }                                         \
  69 } while (0)
  70
  71 enum cinergyt2_ep1_cmd {
  72         CINERGYT2_EP1_PID_TABLE_RESET           = 0x01,
  73         CINERGYT2_EP1_PID_SETUP                 = 0x02,
  74         CINERGYT2_EP1_CONTROL_STREAM_TRANSFER   = 0x03,
  75         CINERGYT2_EP1_SET_TUNER_PARAMETERS      = 0x04,
  76         CINERGYT2_EP1_GET_TUNER_STATUS          = 0x05,
  77         CINERGYT2_EP1_START_SCAN                = 0x06,
  78         CINERGYT2_EP1_CONTINUE_SCAN             = 0x07,
  79         CINERGYT2_EP1_GET_RC_EVENTS             = 0x08,
  80         CINERGYT2_EP1_SLEEP_MODE                = 0x09
  81 };
  82
  83 struct dvbt_set_parameters_msg {
  84         uint8_t cmd;
  85         __le32 freq;
  86         uint8_t bandwidth;
  87         __le16 tps;
  88         uint8_t flags;
  89 } __attribute__((packed));
  90
  91 struct dvbt_get_status_msg {
  92         __le32 freq;
  93         uint8_t bandwidth;
  94         __le16 tps;
  95         uint8_t flags;
  96         __le16 gain;
  97         uint8_t snr;
  98         __le32 viterbi_error_rate;
  99         __le32 rs_error_rate;
 100         __le32 uncorrected_block_count;
 101         uint8_t lock_bits;
 102         uint8_t prev_lock_bits;
 103 } __attribute__((packed));
 104
 105 static struct dvb_frontend_info cinergyt2_fe_info = {
 106         .name = DRIVER_NAME,
 107         .type = FE_OFDM,
 108         .frequency_min = 174000000,
 109         .frequency_max = 862000000,
 110         .frequency_stepsize = 166667,
 111         .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
 112                 FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
 113                 FE_CAN_FEC_AUTO |
 114                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 115                 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
 116                 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS
 117 };
 118
 119 struct cinergyt2 {
 120         struct dvb_demux demux;
 121         struct usb_device *udev;
 122         struct mutex sem;
 123         struct mutex wq_sem;
 124         struct dvb_adapter adapter;
 125         struct dvb_device *fedev;
 126         struct dmxdev dmxdev;
 127         struct dvb_net dvbnet;
 128
 129         int streaming;
 130         int sleeping;
 131
 132         struct dvbt_set_parameters_msg param;
 133         struct dvbt_get_status_msg status;
 134         struct delayed_work query_work;
 135
 136         wait_queue_head_t poll_wq;
 137         int pending_fe_events;
 138         int disconnect_pending;
 139         unsigned int uncorrected_block_count;
 140         atomic_t inuse;
 141
 142         void *streambuf;
 143         dma_addr_t streambuf_dmahandle;
 144         struct urb *stream_urb [STREAM_URB_COUNT];
 145
 146 #ifdef ENABLE_RC
 147         struct input_dev *rc_input_dev;
 148         char phys[64];
 149         struct delayed_work rc_query_work;
 150         int rc_input_event;
 151         __le32 rc_last_code;
 152         unsigned long last_event_jiffies;
 153 #endif
 154 };
 155
 156 enum {
 157         CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
 158         CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
 159         CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
 160 };
 161
 162 struct cinergyt2_rc_event {
 163         char type;
 164         __le32 value;
 165 } __attribute__((packed));
 166
 167 static const uint32_t rc_keys[] = {
 168         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfe01eb04,     KEY_POWER,
 169         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfd02eb04,     KEY_1,
 170         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfc03eb04,     KEY_2,
 171         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfb04eb04,     KEY_3,
 172         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfa05eb04,     KEY_4,
 173         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf906eb04,     KEY_5,
 174         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf807eb04,     KEY_6,
 175         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf708eb04,     KEY_7,
 176         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf609eb04,     KEY_8,
 177         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf50aeb04,     KEY_9,
 178         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf30ceb04,     KEY_0,
 179         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf40beb04,     KEY_VIDEO,
 180         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf20deb04,     KEY_REFRESH,
 181         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf10eeb04,     KEY_SELECT,
 182         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf00feb04,     KEY_EPG,
 183         CINERGYT2_RC_EVENT_TYPE_NEC,    0xef10eb04,     KEY_UP,
 184         CINERGYT2_RC_EVENT_TYPE_NEC,    0xeb14eb04,     KEY_DOWN,
 185         CINERGYT2_RC_EVENT_TYPE_NEC,    0xee11eb04,     KEY_LEFT,
 186         CINERGYT2_RC_EVENT_TYPE_NEC,    0xec13eb04,     KEY_RIGHT,
 187         CINERGYT2_RC_EVENT_TYPE_NEC,    0xed12eb04,     KEY_OK,
 188         CINERGYT2_RC_EVENT_TYPE_NEC,    0xea15eb04,     KEY_TEXT,
 189         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe916eb04,     KEY_INFO,
 190         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe817eb04,     KEY_RED,
 191         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe718eb04,     KEY_GREEN,
 192         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe619eb04,     KEY_YELLOW,
 193         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe51aeb04,     KEY_BLUE,
 194         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe31ceb04,     KEY_VOLUMEUP,
 195         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe11eeb04,     KEY_VOLUMEDOWN,
 196         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe21deb04,     KEY_MUTE,
 197         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe41beb04,     KEY_CHANNELUP,
 198         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe01feb04,     KEY_CHANNELDOWN,
 199         CINERGYT2_RC_EVENT_TYPE_NEC,    0xbf40eb04,     KEY_PAUSE,
 200         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb34ceb04,     KEY_PLAY,
 201         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa758eb04,     KEY_RECORD,
 202         CINERGYT2_RC_EVENT_TYPE_NEC,    0xab54eb04,     KEY_PREVIOUS,
 203         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb748eb04,     KEY_STOP,
 204         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa35ceb04,     KEY_NEXT
 205 };
 206
 207 static int cinergyt2_command (struct cinergyt2 *cinergyt2,
 208                               char *send_buf, int send_buf_len,
 209                               char *recv_buf, int recv_buf_len)
 210 {
 211         int actual_len;
 212         char dummy;
 213         int ret;
 214
 215         ret = usb_bulk_msg(cinergyt2->udev, usb_sndbulkpipe(cinergyt2->udev, 1),
 216                            send_buf, send_buf_len, &actual_len, 1000);
 217
 218         if (ret)
 219                 dprintk(1, "usb_bulk_msg (send) failed, err %i\n", ret);
 220
 221         if (!recv_buf)
 222                 recv_buf = &dummy;
 223
 224         ret = usb_bulk_msg(cinergyt2->udev, usb_rcvbulkpipe(cinergyt2->udev, 1),
 225                            recv_buf, recv_buf_len, &actual_len, 1000);
 226
 227         if (ret)
 228                 dprintk(1, "usb_bulk_msg (read) failed, err %i\n", ret);
 229
 230         return ret ? ret : actual_len;
 231 }
 232
 233 static void cinergyt2_control_stream_transfer (struct cinergyt2 *cinergyt2, int enable)
 234 {
 235         char buf [] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
 236         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 237 }
 238
 239 static void cinergyt2_sleep (struct cinergyt2 *cinergyt2, int sleep)
 240 {
 241         char buf [] = { CINERGYT2_EP1_SLEEP_MODE, sleep ? 1 : 0 };
 242         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 243         cinergyt2->sleeping = sleep;
 244 }
 245
 246 static void cinergyt2_stream_irq (struct urb *urb);
 247
 248 static int cinergyt2_submit_stream_urb (struct cinergyt2 *cinergyt2, struct urb *urb)
 249 {
 250         int err;
 251
 252         usb_fill_bulk_urb(urb,
 253                           cinergyt2->udev,
 254                           usb_rcvbulkpipe(cinergyt2->udev, 0x2),
 255                           urb->transfer_buffer,
 256                           STREAM_BUF_SIZE,
 257                           cinergyt2_stream_irq,
 258                           cinergyt2);
 259
 260         if ((err = usb_submit_urb(urb, GFP_ATOMIC)))
 261                 dprintk(1, "urb submission failed (err = %i)!\n", err);
 262
 263         return err;
 264 }
 265
 266 static void cinergyt2_stream_irq (struct urb *urb)
 267 {
 268         struct cinergyt2 *cinergyt2 = urb->context;
 269
 270         if (urb->actual_length > 0)
 271                 dvb_dmx_swfilter(&cinergyt2->demux,
 272                                  urb->transfer_buffer, urb->actual_length);
 273
 274         if (cinergyt2->streaming)
 275                 cinergyt2_submit_stream_urb(cinergyt2, urb);
 276 }
 277
 278 static void cinergyt2_free_stream_urbs (struct cinergyt2 *cinergyt2)
 279 {
 280         int i;
 281
 282         for (i=0; i<STREAM_URB_COUNT; i++)
 283                 usb_free_urb(cinergyt2->stream_urb[i]);
 284
 285         usb_buffer_free(cinergyt2->udev, 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 = usb_buffer_alloc(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 294                                               GFP_KERNEL, &cinergyt2->streambuf_dmahandle);
 295         if (!cinergyt2->streambuf) {
 296                 dprintk(1, "failed to alloc consistent stream memory area, bailing out!\n");
 297                 return -ENOMEM;
 298         }
 299
 300         memset(cinergyt2->streambuf, 0, STREAM_URB_COUNT*STREAM_BUF_SIZE);
 301
 302         for (i=0; i<STREAM_URB_COUNT; i++) {
 303                 struct urb *urb;
 304
 305                 if (!(urb = usb_alloc_urb(0, GFP_ATOMIC))) {
 306                         dprintk(1, "failed to alloc consistent stream urbs, bailing out!\n");
 307                         cinergyt2_free_stream_urbs(cinergyt2);
 308                         return -ENOMEM;
 309                 }
 310
 311                 urb->transfer_buffer = cinergyt2->streambuf + i * STREAM_BUF_SIZE;
 312                 urb->transfer_buffer_length = STREAM_BUF_SIZE;
 313
 314                 cinergyt2->stream_urb[i] = urb;
 315         }
 316
 317         return 0;
 318 }
 319
 320 static void cinergyt2_stop_stream_xfer (struct cinergyt2 *cinergyt2)
 321 {
 322         int i;
 323
 324         cinergyt2_control_stream_transfer(cinergyt2, 0);
 325
 326         for (i=0; i<STREAM_URB_COUNT; i++)
 327                 usb_kill_urb(cinergyt2->stream_urb[i]);
 328 }
 329
 330 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
 331 {
 332         int i, err;
 333
 334         for (i=0; i<STREAM_URB_COUNT; i++) {
 335                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
 336                         cinergyt2_stop_stream_xfer(cinergyt2);
 337                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
 338                         return err;
 339                 }
 340         }
 341
 342         cinergyt2_control_stream_transfer(cinergyt2, 1);
 343         return 0;
 344 }
 345
 346 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 347 {
 348         struct dvb_demux *demux = dvbdmxfeed->demux;
 349         struct cinergyt2 *cinergyt2 = demux->priv;
 350
 351         if (cinergyt2->disconnect_pending)
 352                 return -EAGAIN;
 353         if (mutex_lock_interruptible(&cinergyt2->sem))
 354                 return -ERESTARTSYS;
 355
 356         if (cinergyt2->streaming == 0)
 357                 cinergyt2_start_stream_xfer(cinergyt2);
 358
 359         cinergyt2->streaming++;
 360         mutex_unlock(&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 (cinergyt2->disconnect_pending)
 370                 return -EAGAIN;
 371         if (mutex_lock_interruptible(&cinergyt2->sem))
 372                 return -ERESTARTSYS;
 373
 374         if (--cinergyt2->streaming == 0)
 375                 cinergyt2_stop_stream_xfer(cinergyt2);
 376
 377         mutex_unlock(&cinergyt2->sem);
 378         return 0;
 379 }
 380
 381 /**
 382  *  convert linux-dvb frontend parameter set into TPS.
 383  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
 384  *
 385  *  This function is probably reusable and may better get placed in a support
 386  *  library.
 387  *
 388  *  We replace errornous fields by default TPS fields (the ones with value 0).
 389  */
 390 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
 391 {
 392         struct dvb_ofdm_parameters *op = &p->u.ofdm;
 393         uint16_t tps = 0;
 394
 395         switch (op->code_rate_HP) {
 396                 case FEC_2_3:
 397                         tps |= (1 << 7);
 398                         break;
 399                 case FEC_3_4:
 400                         tps |= (2 << 7);
 401                         break;
 402                 case FEC_5_6:
 403                         tps |= (3 << 7);
 404                         break;
 405                 case FEC_7_8:
 406                         tps |= (4 << 7);
 407                         break;
 408                 case FEC_1_2:
 409                 case FEC_AUTO:
 410                 default:
 411                         /* tps |= (0 << 7) */;
 412         }
 413
 414         switch (op->code_rate_LP) {
 415                 case FEC_2_3:
 416                         tps |= (1 << 4);
 417                         break;
 418                 case FEC_3_4:
 419                         tps |= (2 << 4);
 420                         break;
 421                 case FEC_5_6:
 422                         tps |= (3 << 4);
 423                         break;
 424                 case FEC_7_8:
 425                         tps |= (4 << 4);
 426                         break;
 427                 case FEC_1_2:
 428                 case FEC_AUTO:
 429                 default:
 430                         /* tps |= (0 << 4) */;
 431         }
 432
 433         switch (op->constellation) {
 434                 case QAM_16:
 435                         tps |= (1 << 13);
 436                         break;
 437                 case QAM_64:
 438                         tps |= (2 << 13);
 439                         break;
 440                 case QPSK:
 441                 default:
 442                         /* tps |= (0 << 13) */;
 443         }
 444
 445         switch (op->transmission_mode) {
 446                 case TRANSMISSION_MODE_8K:
 447                         tps |= (1 << 0);
 448                         break;
 449                 case TRANSMISSION_MODE_2K:
 450                 default:
 451                         /* tps |= (0 << 0) */;
 452         }
 453
 454         switch (op->guard_interval) {
 455                 case GUARD_INTERVAL_1_16:
 456                         tps |= (1 << 2);
 457                         break;
 458                 case GUARD_INTERVAL_1_8:
 459                         tps |= (2 << 2);
 460                         break;
 461                 case GUARD_INTERVAL_1_4:
 462                         tps |= (3 << 2);
 463                         break;
 464                 case GUARD_INTERVAL_1_32:
 465                 default:
 466                         /* tps |= (0 << 2) */;
 467         }
 468
 469         switch (op->hierarchy_information) {
 470                 case HIERARCHY_1:
 471                         tps |= (1 << 10);
 472                         break;
 473                 case HIERARCHY_2:
 474                         tps |= (2 << 10);
 475                         break;
 476                 case HIERARCHY_4:
 477                         tps |= (3 << 10);
 478                         break;
 479                 case HIERARCHY_NONE:
 480                 default:
 481                         /* tps |= (0 << 10) */;
 482         }
 483
 484         return tps;
 485 }
 486
 487 static int cinergyt2_open (struct inode *inode, struct file *file)
 488 {
 489         struct dvb_device *dvbdev = file->private_data;
 490         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 491         int err = -EAGAIN;
 492
 493         if (cinergyt2->disconnect_pending)
 494                 goto out;
 495         err = mutex_lock_interruptible(&cinergyt2->wq_sem);
 496         if (err)
 497                 goto out;
 498
 499         err = mutex_lock_interruptible(&cinergyt2->sem);
 500         if (err)
 501                 goto out_unlock1;
 502
 503         if ((err = dvb_generic_open(inode, file)))
 504                 goto out_unlock2;
 505
 506         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 507                 cinergyt2_sleep(cinergyt2, 0);
 508                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 509         }
 510
 511         atomic_inc(&cinergyt2->inuse);
 512
 513 out_unlock2:
 514         mutex_unlock(&cinergyt2->sem);
 515 out_unlock1:
 516         mutex_unlock(&cinergyt2->wq_sem);
 517 out:
 518         return err;
 519 }
 520
 521 static void cinergyt2_unregister(struct cinergyt2 *cinergyt2)
 522 {
 523         dvb_net_release(&cinergyt2->dvbnet);
 524         dvb_dmxdev_release(&cinergyt2->dmxdev);
 525         dvb_dmx_release(&cinergyt2->demux);
 526         dvb_unregister_device(cinergyt2->fedev);
 527         dvb_unregister_adapter(&cinergyt2->adapter);
 528
 529         cinergyt2_free_stream_urbs(cinergyt2);
 530         kfree(cinergyt2);
 531 }
 532
 533 static int cinergyt2_release (struct inode *inode, struct file *file)
 534 {
 535         struct dvb_device *dvbdev = file->private_data;
 536         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 537
 538         mutex_lock(&cinergyt2->wq_sem);
 539
 540         if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
 541                 cancel_rearming_delayed_work(&cinergyt2->query_work);
 542
 543                 mutex_lock(&cinergyt2->sem);
 544                 cinergyt2_sleep(cinergyt2, 1);
 545                 mutex_unlock(&cinergyt2->sem);
 546         }
 547
 548         mutex_unlock(&cinergyt2->wq_sem);
 549
 550         if (atomic_dec_and_test(&cinergyt2->inuse) && cinergyt2->disconnect_pending) {
 551                 warn("delayed unregister in release");
 552                 cinergyt2_unregister(cinergyt2);
 553         }
 554
 555         return dvb_generic_release(inode, file);
 556 }
 557
 558 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
 559 {
 560         struct dvb_device *dvbdev = file->private_data;
 561         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 562         unsigned int mask = 0;
 563
 564         if (cinergyt2->disconnect_pending)
 565                 return -EAGAIN;
 566         if (mutex_lock_interruptible(&cinergyt2->sem))
 567                 return -ERESTARTSYS;
 568
 569         poll_wait(file, &cinergyt2->poll_wq, wait);
 570
 571         if (cinergyt2->pending_fe_events != 0)
 572                 mask |= (POLLIN | POLLRDNORM | POLLPRI);
 573
 574         mutex_unlock(&cinergyt2->sem);
 575
 576         return mask;
 577 }
 578
 579
 580 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
 581                      unsigned cmd, unsigned long arg)
 582 {
 583         struct dvb_device *dvbdev = file->private_data;
 584         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 585         struct dvbt_get_status_msg *stat = &cinergyt2->status;
 586         fe_status_t status = 0;
 587
 588         switch (cmd) {
 589         case FE_GET_INFO:
 590                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
 591                                     sizeof(struct dvb_frontend_info));
 592
 593         case FE_READ_STATUS:
 594                 if (0xffff - le16_to_cpu(stat->gain) > 30)
 595                         status |= FE_HAS_SIGNAL;
 596                 if (stat->lock_bits & (1 << 6))
 597                         status |= FE_HAS_LOCK;
 598                 if (stat->lock_bits & (1 << 5))
 599                         status |= FE_HAS_SYNC;
 600                 if (stat->lock_bits & (1 << 4))
 601                         status |= FE_HAS_CARRIER;
 602                 if (stat->lock_bits & (1 << 1))
 603                         status |= FE_HAS_VITERBI;
 604
 605                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
 606
 607         case FE_READ_BER:
 608                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
 609                                 (__u32 __user *) arg);
 610
 611         case FE_READ_SIGNAL_STRENGTH:
 612                 return put_user(0xffff - le16_to_cpu(stat->gain),
 613                                 (__u16 __user *) arg);
 614
 615         case FE_READ_SNR:
 616                 return put_user((stat->snr << 8) | stat->snr,
 617                                 (__u16 __user *) arg);
 618
 619         case FE_READ_UNCORRECTED_BLOCKS:
 620         {
 621                 uint32_t unc_count;
 622
 623                 if (mutex_lock_interruptible(&cinergyt2->sem))
 624                         return -ERESTARTSYS;
 625                 unc_count = cinergyt2->uncorrected_block_count;
 626                 cinergyt2->uncorrected_block_count = 0;
 627                 mutex_unlock(&cinergyt2->sem);
 628
 629                 /* UNC are already converted to host byte order... */
 630                 return put_user(unc_count,(__u32 __user *) arg);
 631         }
 632         case FE_SET_FRONTEND:
 633         {
 634                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 635                 struct dvb_frontend_parameters p;
 636                 int err;
 637
 638                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
 639                         return -EPERM;
 640
 641                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
 642                         return -EFAULT;
 643
 644                 if (cinergyt2->disconnect_pending)
 645                         return -EAGAIN;
 646                 if (mutex_lock_interruptible(&cinergyt2->sem))
 647                         return -ERESTARTSYS;
 648
 649                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 650                 param->tps = cpu_to_le16(compute_tps(&p));
 651                 param->freq = cpu_to_le32(p.frequency / 1000);
 652                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
 653
 654                 stat->lock_bits = 0;
 655                 cinergyt2->pending_fe_events++;
 656                 wake_up_interruptible(&cinergyt2->poll_wq);
 657
 658                 err = cinergyt2_command(cinergyt2,
 659                                         (char *) param, sizeof(*param),
 660                                         NULL, 0);
 661
 662                 mutex_unlock(&cinergyt2->sem);
 663
 664                 return (err < 0) ? err : 0;
 665         }
 666
 667         case FE_GET_FRONTEND:
 668                 /**
 669                  *  trivial to implement (see struct dvbt_get_status_msg).
 670                  *  equivalent to FE_READ ioctls, but needs
 671                  *  TPS -> linux-dvb parameter set conversion. Feel free
 672                  *  to implement this and send us a patch if you need this
 673                  *  functionality.
 674                  */
 675                 break;
 676
 677         case FE_GET_EVENT:
 678         {
 679                 /**
 680                  *  for now we only fill the status field. the parameters
 681                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
 682                  */
 683                 struct dvb_frontend_event __user *e = (void __user *) arg;
 684                 if (cinergyt2->pending_fe_events == 0) {
 685                         if (file->f_flags & O_NONBLOCK)
 686                                 return -EWOULDBLOCK;
 687                         wait_event_interruptible(cinergyt2->poll_wq,
 688                                                  cinergyt2->pending_fe_events > 0);
 689                 }
 690                 cinergyt2->pending_fe_events = 0;
 691                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
 692                                         (unsigned long) &e->status);
 693         }
 694
 695         default:
 696                 ;
 697         }
 698
 699         return -EINVAL;
 700 }
 701
 702 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
 703 {
 704         struct dvb_device *dvbdev = file->private_data;
 705         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 706         int ret = 0;
 707
 708         lock_kernel();
 709
 710         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
 711                 ret = -EPERM;
 712                 goto bailout;
 713         }
 714
 715         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
 716                 ret = -EINVAL;
 717                 goto bailout;
 718         }
 719
 720         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 721         vma->vm_file = file;
 722
 723         ret = remap_pfn_range(vma, vma->vm_start,
 724                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
 725                               vma->vm_end - vma->vm_start,
 726                               vma->vm_page_prot) ? -EAGAIN : 0;
 727 bailout:
 728         unlock_kernel();
 729         return ret;
 730 }
 731
 732 static struct file_operations cinergyt2_fops = {
 733         .owner          = THIS_MODULE,
 734         .ioctl          = cinergyt2_ioctl,
 735         .poll           = cinergyt2_poll,
 736         .open           = cinergyt2_open,
 737         .release        = cinergyt2_release,
 738         .mmap           = cinergyt2_mmap
 739 };
 740
 741 static struct dvb_device cinergyt2_fe_template = {
 742         .users = ~0,
 743         .writers = 1,
 744         .readers = (~0)-1,
 745         .fops = &cinergyt2_fops
 746 };
 747
 748 #ifdef ENABLE_RC
 749
 750 static void cinergyt2_query_rc (struct work_struct *work)
 751 {
 752         struct cinergyt2 *cinergyt2 =
 753                 container_of(work, struct cinergyt2, rc_query_work.work);
 754         char buf[1] = { CINERGYT2_EP1_GET_RC_EVENTS };
 755         struct cinergyt2_rc_event rc_events[12];
 756         int n, len, i;
 757
 758         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 759                 return;
 760
 761         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
 762                                 (char *) rc_events, sizeof(rc_events));
 763         if (len < 0)
 764                 goto out;
 765         if (len == 0) {
 766                 if (time_after(jiffies, cinergyt2->last_event_jiffies +
 767                                msecs_to_jiffies(150))) {
 768                         /* stop key repeat */
 769                         if (cinergyt2->rc_input_event != KEY_MAX) {
 770                                 dprintk(1, "rc_input_event=%d Up\n", cinergyt2->rc_input_event);
 771                                 input_report_key(cinergyt2->rc_input_dev,
 772                                                  cinergyt2->rc_input_event, 0);
 773                                 input_sync(cinergyt2->rc_input_dev);
 774                                 cinergyt2->rc_input_event = KEY_MAX;
 775                         }
 776                         cinergyt2->rc_last_code = cpu_to_le32(~0);
 777                 }
 778                 goto out;
 779         }
 780         cinergyt2->last_event_jiffies = jiffies;
 781
 782         for (n = 0; n < (len / sizeof(rc_events[0])); n++) {
 783                 dprintk(1, "rc_events[%d].value = %x, type=%x\n",
 784                         n, le32_to_cpu(rc_events[n].value), rc_events[n].type);
 785
 786                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
 787                     rc_events[n].value == cpu_to_le32(~0)) {
 788                         /* keyrepeat bit -> just repeat last rc_input_event */
 789                 } else {
 790                         cinergyt2->rc_input_event = KEY_MAX;
 791                         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3) {
 792                                 if (rc_keys[i + 0] == rc_events[n].type &&
 793                                     rc_keys[i + 1] == le32_to_cpu(rc_events[n].value)) {
 794                                         cinergyt2->rc_input_event = rc_keys[i + 2];
 795                                         break;
 796                                 }
 797                         }
 798                 }
 799
 800                 if (cinergyt2->rc_input_event != KEY_MAX) {
 801                         if (rc_events[n].value == cinergyt2->rc_last_code &&
 802                             cinergyt2->rc_last_code != cpu_to_le32(~0)) {
 803                                 /* emit a key-up so the double event is recognized */
 804                                 dprintk(1, "rc_input_event=%d UP\n", cinergyt2->rc_input_event);
 805                                 input_report_key(cinergyt2->rc_input_dev,
 806                                                  cinergyt2->rc_input_event, 0);
 807                         }
 808                         dprintk(1, "rc_input_event=%d\n", cinergyt2->rc_input_event);
 809                         input_report_key(cinergyt2->rc_input_dev,
 810                                          cinergyt2->rc_input_event, 1);
 811                         input_sync(cinergyt2->rc_input_dev);
 812                         cinergyt2->rc_last_code = rc_events[n].value;
 813                 }
 814         }
 815
 816 out:
 817         schedule_delayed_work(&cinergyt2->rc_query_work,
 818                               msecs_to_jiffies(RC_QUERY_INTERVAL));
 819
 820         mutex_unlock(&cinergyt2->sem);
 821 }
 822
 823 static int cinergyt2_register_rc(struct cinergyt2 *cinergyt2)
 824 {
 825         struct input_dev *input_dev;
 826         int i;
 827         int err;
 828
 829         input_dev = input_allocate_device();
 830         if (!input_dev)
 831                 return -ENOMEM;
 832
 833         usb_make_path(cinergyt2->udev, cinergyt2->phys, sizeof(cinergyt2->phys));
 834         strlcat(cinergyt2->phys, "/input0", sizeof(cinergyt2->phys));
 835         cinergyt2->rc_input_event = KEY_MAX;
 836         cinergyt2->rc_last_code = cpu_to_le32(~0);
 837         INIT_DELAYED_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc);
 838
 839         input_dev->name = DRIVER_NAME " remote control";
 840         input_dev->phys = cinergyt2->phys;
 841         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
 842         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3)
 843                 set_bit(rc_keys[i + 2], input_dev->keybit);
 844         input_dev->keycodesize = 0;
 845         input_dev->keycodemax = 0;
 846         input_dev->id.bustype = BUS_USB;
 847         input_dev->id.vendor = le16_to_cpu(cinergyt2->udev->descriptor.idVendor);
 848         input_dev->id.product = le16_to_cpu(cinergyt2->udev->descriptor.idProduct);
 849         input_dev->id.version = 1;
 850         input_dev->dev.parent = &cinergyt2->udev->dev;
 851
 852         err = input_register_device(input_dev);
 853         if (err) {
 854                 input_free_device(input_dev);
 855                 return err;
 856         }
 857
 858         cinergyt2->rc_input_dev = input_dev;
 859         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 860
 861         return 0;
 862 }
 863
 864 static void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2)
 865 {
 866         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
 867         input_unregister_device(cinergyt2->rc_input_dev);
 868 }
 869
 870 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2)
 871 {
 872         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
 873 }
 874
 875 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2)
 876 {
 877         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 878 }
 879
 880 #else
 881
 882 static inline int cinergyt2_register_rc(struct cinergyt2 *cinergyt2) { return 0; }
 883 static inline void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2) { }
 884 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2) { }
 885 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2) { }
 886
 887 #endif /* ENABLE_RC */
 888
 889 static void cinergyt2_query (struct work_struct *work)
 890 {
 891         struct cinergyt2 *cinergyt2 =
 892                 container_of(work, struct cinergyt2, query_work.work);
 893         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
 894         struct dvbt_get_status_msg *s = &cinergyt2->status;
 895         uint8_t lock_bits;
 896
 897         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 898                 return;
 899
 900         lock_bits = s->lock_bits;
 901
 902         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
 903
 904         cinergyt2->uncorrected_block_count +=
 905                 le32_to_cpu(s->uncorrected_block_count);
 906
 907         if (lock_bits != s->lock_bits) {
 908                 wake_up_interruptible(&cinergyt2->poll_wq);
 909                 cinergyt2->pending_fe_events++;
 910         }
 911
 912         schedule_delayed_work(&cinergyt2->query_work,
 913                               msecs_to_jiffies(QUERY_INTERVAL));
 914
 915         mutex_unlock(&cinergyt2->sem);
 916 }
 917
 918 static int cinergyt2_probe (struct usb_interface *intf,
 919                   const struct usb_device_id *id)
 920 {
 921         struct cinergyt2 *cinergyt2;
 922         int err;
 923
 924         if (!(cinergyt2 = kzalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
 925                 dprintk(1, "out of memory?!?\n");
 926                 return -ENOMEM;
 927         }
 928
 929         usb_set_intfdata (intf, (void *) cinergyt2);
 930
 931         mutex_init(&cinergyt2->sem);
 932         mutex_init(&cinergyt2->wq_sem);
 933         init_waitqueue_head (&cinergyt2->poll_wq);
 934         INIT_DELAYED_WORK(&cinergyt2->query_work, cinergyt2_query);
 935
 936         cinergyt2->udev = interface_to_usbdev(intf);
 937         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 938
 939         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
 940                 dprintk(1, "unable to allocate stream urbs\n");
 941                 kfree(cinergyt2);
 942                 return -ENOMEM;
 943         }
 944
 945         err = dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME,
 946                                    THIS_MODULE, &cinergyt2->udev->dev,
 947                                    adapter_nr);
 948         if (err < 0) {
 949                 kfree(cinergyt2);
 950                 return err;
 951         }
 952
 953         cinergyt2->demux.priv = cinergyt2;
 954         cinergyt2->demux.filternum = 256;
 955         cinergyt2->demux.feednum = 256;
 956         cinergyt2->demux.start_feed = cinergyt2_start_feed;
 957         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
 958         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
 959                                             DMX_SECTION_FILTERING |
 960                                             DMX_MEMORY_BASED_FILTERING;
 961
 962         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
 963                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
 964                 goto bailout;
 965         }
 966
 967         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
 968         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
 969         cinergyt2->dmxdev.capabilities = 0;
 970
 971         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, &cinergyt2->adapter)) < 0) {
 972                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
 973                 goto bailout;
 974         }
 975
 976         if (dvb_net_init(&cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
 977                 dprintk(1, "dvb_net_init() failed!\n");
 978
 979         dvb_register_device(&cinergyt2->adapter, &cinergyt2->fedev,
 980                             &cinergyt2_fe_template, cinergyt2,
 981                             DVB_DEVICE_FRONTEND);
 982
 983         err = cinergyt2_register_rc(cinergyt2);
 984         if (err)
 985                 goto bailout;
 986
 987         return 0;
 988
 989 bailout:
 990         dvb_net_release(&cinergyt2->dvbnet);
 991         dvb_dmxdev_release(&cinergyt2->dmxdev);
 992         dvb_dmx_release(&cinergyt2->demux);
 993         dvb_unregister_adapter(&cinergyt2->adapter);
 994         cinergyt2_free_stream_urbs(cinergyt2);
 995         kfree(cinergyt2);
 996         return -ENOMEM;
 997 }
 998
 999 static void cinergyt2_disconnect (struct usb_interface *intf)
1000 {
1001         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1002
1003         cinergyt2_unregister_rc(cinergyt2);
1004         cancel_rearming_delayed_work(&cinergyt2->query_work);
1005         wake_up_interruptible(&cinergyt2->poll_wq);
1006
1007         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
1008         cinergyt2->disconnect_pending = 1;
1009
1010         if (!atomic_read(&cinergyt2->inuse))
1011                 cinergyt2_unregister(cinergyt2);
1012 }
1013
1014 static int cinergyt2_suspend (struct usb_interface *intf, pm_message_t state)
1015 {
1016         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1017
1018         if (cinergyt2->disconnect_pending)
1019                 return -EAGAIN;
1020         if (mutex_lock_interruptible(&cinergyt2->wq_sem))
1021                 return -ERESTARTSYS;
1022
1023         cinergyt2_suspend_rc(cinergyt2);
1024         cancel_rearming_delayed_work(&cinergyt2->query_work);
1025
1026         mutex_lock(&cinergyt2->sem);
1027         if (cinergyt2->streaming)
1028                 cinergyt2_stop_stream_xfer(cinergyt2);
1029         cinergyt2_sleep(cinergyt2, 1);
1030         mutex_unlock(&cinergyt2->sem);
1031
1032         mutex_unlock(&cinergyt2->wq_sem);
1033
1034         return 0;
1035 }
1036
1037 static int cinergyt2_resume (struct usb_interface *intf)
1038 {
1039         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1040         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
1041         int err = -EAGAIN;
1042
1043         if (cinergyt2->disconnect_pending)
1044                 goto out;
1045         err = mutex_lock_interruptible(&cinergyt2->wq_sem);
1046         if (err)
1047                 goto out;
1048
1049         err = mutex_lock_interruptible(&cinergyt2->sem);
1050         if (err)
1051                 goto out_unlock1;
1052
1053         if (!cinergyt2->sleeping) {
1054                 cinergyt2_sleep(cinergyt2, 0);
1055                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
1056                 if (cinergyt2->streaming)
1057                         cinergyt2_start_stream_xfer(cinergyt2);
1058                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
1059         }
1060
1061         cinergyt2_resume_rc(cinergyt2);
1062
1063         mutex_unlock(&cinergyt2->sem);
1064 out_unlock1:
1065         mutex_unlock(&cinergyt2->wq_sem);
1066 out:
1067         return err;
1068 }
1069
1070 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
1071         { USB_DEVICE(0x0ccd, 0x0038) },
1072         { 0 }
1073 };
1074
1075 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
1076
1077 static struct usb_driver cinergyt2_driver = {
1078         .name   = "cinergyT2",
1079         .probe  = cinergyt2_probe,
1080         .disconnect     = cinergyt2_disconnect,
1081         .suspend        = cinergyt2_suspend,
1082         .resume         = cinergyt2_resume,
1083         .id_table       = cinergyt2_table
1084 };
1085
1086 static int __init cinergyt2_init (void)
1087 {
1088         int err;
1089
1090         if ((err = usb_register(&cinergyt2_driver)) < 0)
1091                 dprintk(1, "usb_register() failed! (err %i)\n", err);
1092
1093         return err;
1094 }
1095
1096 static void __exit cinergyt2_exit (void)
1097 {
1098         usb_deregister(&cinergyt2_driver);
1099 }
1100
1101 module_init (cinergyt2_init);
1102 module_exit (cinergyt2_exit);
1103
1104 MODULE_LICENSE("GPL");
1105 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");