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 #define dprintk(level, args...)                                         \
  62 do {                                                                    \
  63         if ((debug & level)) {                                          \
  64                 printk("%s: %s(): ", KBUILD_MODNAME,                    \
  65                        __FUNCTION__);                                   \
  66                 printk(args); }                                         \
  67 } while (0)
  68
  69 enum cinergyt2_ep1_cmd {
  70         CINERGYT2_EP1_PID_TABLE_RESET           = 0x01,
  71         CINERGYT2_EP1_PID_SETUP                 = 0x02,
  72         CINERGYT2_EP1_CONTROL_STREAM_TRANSFER   = 0x03,
  73         CINERGYT2_EP1_SET_TUNER_PARAMETERS      = 0x04,
  74         CINERGYT2_EP1_GET_TUNER_STATUS          = 0x05,
  75         CINERGYT2_EP1_START_SCAN                = 0x06,
  76         CINERGYT2_EP1_CONTINUE_SCAN             = 0x07,
  77         CINERGYT2_EP1_GET_RC_EVENTS             = 0x08,
  78         CINERGYT2_EP1_SLEEP_MODE                = 0x09
  79 };
  80
  81 struct dvbt_set_parameters_msg {
  82         uint8_t cmd;
  83         uint32_t freq;
  84         uint8_t bandwidth;
  85         uint16_t tps;
  86         uint8_t flags;
  87 } __attribute__((packed));
  88
  89 struct dvbt_get_status_msg {
  90         uint32_t freq;
  91         uint8_t bandwidth;
  92         uint16_t tps;
  93         uint8_t flags;
  94         uint16_t gain;
  95         uint8_t snr;
  96         uint32_t viterbi_error_rate;
  97         uint32_t rs_error_rate;
  98         uint32_t uncorrected_block_count;
  99         uint8_t lock_bits;
 100         uint8_t prev_lock_bits;
 101 } __attribute__((packed));
 102
 103 static struct dvb_frontend_info cinergyt2_fe_info = {
 104         .name = DRIVER_NAME,
 105         .type = FE_OFDM,
 106         .frequency_min = 174000000,
 107         .frequency_max = 862000000,
 108         .frequency_stepsize = 166667,
 109         .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
 110                 FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
 111                 FE_CAN_FEC_AUTO |
 112                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 113                 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
 114                 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS
 115 };
 116
 117 struct cinergyt2 {
 118         struct dvb_demux demux;
 119         struct usb_device *udev;
 120         struct mutex sem;
 121         struct mutex wq_sem;
 122         struct dvb_adapter adapter;
 123         struct dvb_device *fedev;
 124         struct dmxdev dmxdev;
 125         struct dvb_net dvbnet;
 126
 127         int streaming;
 128         int sleeping;
 129
 130         struct dvbt_set_parameters_msg param;
 131         struct dvbt_get_status_msg status;
 132         struct delayed_work query_work;
 133
 134         wait_queue_head_t poll_wq;
 135         int pending_fe_events;
 136         int disconnect_pending;
 137         atomic_t inuse;
 138
 139         void *streambuf;
 140         dma_addr_t streambuf_dmahandle;
 141         struct urb *stream_urb [STREAM_URB_COUNT];
 142
 143 #ifdef ENABLE_RC
 144         struct input_dev *rc_input_dev;
 145         char phys[64];
 146         struct delayed_work rc_query_work;
 147         int rc_input_event;
 148         u32 rc_last_code;
 149         unsigned long last_event_jiffies;
 150 #endif
 151 };
 152
 153 enum {
 154         CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
 155         CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
 156         CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
 157 };
 158
 159 struct cinergyt2_rc_event {
 160         char type;
 161         uint32_t value;
 162 } __attribute__((packed));
 163
 164 static const uint32_t rc_keys[] = {
 165         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfe01eb04,     KEY_POWER,
 166         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfd02eb04,     KEY_1,
 167         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfc03eb04,     KEY_2,
 168         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfb04eb04,     KEY_3,
 169         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfa05eb04,     KEY_4,
 170         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf906eb04,     KEY_5,
 171         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf807eb04,     KEY_6,
 172         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf708eb04,     KEY_7,
 173         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf609eb04,     KEY_8,
 174         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf50aeb04,     KEY_9,
 175         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf30ceb04,     KEY_0,
 176         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf40beb04,     KEY_VIDEO,
 177         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf20deb04,     KEY_REFRESH,
 178         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf10eeb04,     KEY_SELECT,
 179         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf00feb04,     KEY_EPG,
 180         CINERGYT2_RC_EVENT_TYPE_NEC,    0xef10eb04,     KEY_UP,
 181         CINERGYT2_RC_EVENT_TYPE_NEC,    0xeb14eb04,     KEY_DOWN,
 182         CINERGYT2_RC_EVENT_TYPE_NEC,    0xee11eb04,     KEY_LEFT,
 183         CINERGYT2_RC_EVENT_TYPE_NEC,    0xec13eb04,     KEY_RIGHT,
 184         CINERGYT2_RC_EVENT_TYPE_NEC,    0xed12eb04,     KEY_OK,
 185         CINERGYT2_RC_EVENT_TYPE_NEC,    0xea15eb04,     KEY_TEXT,
 186         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe916eb04,     KEY_INFO,
 187         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe817eb04,     KEY_RED,
 188         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe718eb04,     KEY_GREEN,
 189         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe619eb04,     KEY_YELLOW,
 190         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe51aeb04,     KEY_BLUE,
 191         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe31ceb04,     KEY_VOLUMEUP,
 192         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe11eeb04,     KEY_VOLUMEDOWN,
 193         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe21deb04,     KEY_MUTE,
 194         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe41beb04,     KEY_CHANNELUP,
 195         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe01feb04,     KEY_CHANNELDOWN,
 196         CINERGYT2_RC_EVENT_TYPE_NEC,    0xbf40eb04,     KEY_PAUSE,
 197         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb34ceb04,     KEY_PLAY,
 198         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa758eb04,     KEY_RECORD,
 199         CINERGYT2_RC_EVENT_TYPE_NEC,    0xab54eb04,     KEY_PREVIOUS,
 200         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb748eb04,     KEY_STOP,
 201         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa35ceb04,     KEY_NEXT
 202 };
 203
 204 static int cinergyt2_command (struct cinergyt2 *cinergyt2,
 205                               char *send_buf, int send_buf_len,
 206                               char *recv_buf, int recv_buf_len)
 207 {
 208         int actual_len;
 209         char dummy;
 210         int ret;
 211
 212         ret = usb_bulk_msg(cinergyt2->udev, usb_sndbulkpipe(cinergyt2->udev, 1),
 213                            send_buf, send_buf_len, &actual_len, 1000);
 214
 215         if (ret)
 216                 dprintk(1, "usb_bulk_msg (send) failed, err %i\n", ret);
 217
 218         if (!recv_buf)
 219                 recv_buf = &dummy;
 220
 221         ret = usb_bulk_msg(cinergyt2->udev, usb_rcvbulkpipe(cinergyt2->udev, 1),
 222                            recv_buf, recv_buf_len, &actual_len, 1000);
 223
 224         if (ret)
 225                 dprintk(1, "usb_bulk_msg (read) failed, err %i\n", ret);
 226
 227         return ret ? ret : actual_len;
 228 }
 229
 230 static void cinergyt2_control_stream_transfer (struct cinergyt2 *cinergyt2, int enable)
 231 {
 232         char buf [] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
 233         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 234 }
 235
 236 static void cinergyt2_sleep (struct cinergyt2 *cinergyt2, int sleep)
 237 {
 238         char buf [] = { CINERGYT2_EP1_SLEEP_MODE, sleep ? 1 : 0 };
 239         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 240         cinergyt2->sleeping = sleep;
 241 }
 242
 243 static void cinergyt2_stream_irq (struct urb *urb);
 244
 245 static int cinergyt2_submit_stream_urb (struct cinergyt2 *cinergyt2, struct urb *urb)
 246 {
 247         int err;
 248
 249         usb_fill_bulk_urb(urb,
 250                           cinergyt2->udev,
 251                           usb_rcvbulkpipe(cinergyt2->udev, 0x2),
 252                           urb->transfer_buffer,
 253                           STREAM_BUF_SIZE,
 254                           cinergyt2_stream_irq,
 255                           cinergyt2);
 256
 257         if ((err = usb_submit_urb(urb, GFP_ATOMIC)))
 258                 dprintk(1, "urb submission failed (err = %i)!\n", err);
 259
 260         return err;
 261 }
 262
 263 static void cinergyt2_stream_irq (struct urb *urb)
 264 {
 265         struct cinergyt2 *cinergyt2 = urb->context;
 266
 267         if (urb->actual_length > 0)
 268                 dvb_dmx_swfilter(&cinergyt2->demux,
 269                                  urb->transfer_buffer, urb->actual_length);
 270
 271         if (cinergyt2->streaming)
 272                 cinergyt2_submit_stream_urb(cinergyt2, urb);
 273 }
 274
 275 static void cinergyt2_free_stream_urbs (struct cinergyt2 *cinergyt2)
 276 {
 277         int i;
 278
 279         for (i=0; i<STREAM_URB_COUNT; i++)
 280                 usb_free_urb(cinergyt2->stream_urb[i]);
 281
 282         usb_buffer_free(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 283                             cinergyt2->streambuf, cinergyt2->streambuf_dmahandle);
 284 }
 285
 286 static int cinergyt2_alloc_stream_urbs (struct cinergyt2 *cinergyt2)
 287 {
 288         int i;
 289
 290         cinergyt2->streambuf = usb_buffer_alloc(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 291                                               GFP_KERNEL, &cinergyt2->streambuf_dmahandle);
 292         if (!cinergyt2->streambuf) {
 293                 dprintk(1, "failed to alloc consistent stream memory area, bailing out!\n");
 294                 return -ENOMEM;
 295         }
 296
 297         memset(cinergyt2->streambuf, 0, STREAM_URB_COUNT*STREAM_BUF_SIZE);
 298
 299         for (i=0; i<STREAM_URB_COUNT; i++) {
 300                 struct urb *urb;
 301
 302                 if (!(urb = usb_alloc_urb(0, GFP_ATOMIC))) {
 303                         dprintk(1, "failed to alloc consistent stream urbs, bailing out!\n");
 304                         cinergyt2_free_stream_urbs(cinergyt2);
 305                         return -ENOMEM;
 306                 }
 307
 308                 urb->transfer_buffer = cinergyt2->streambuf + i * STREAM_BUF_SIZE;
 309                 urb->transfer_buffer_length = STREAM_BUF_SIZE;
 310
 311                 cinergyt2->stream_urb[i] = urb;
 312         }
 313
 314         return 0;
 315 }
 316
 317 static void cinergyt2_stop_stream_xfer (struct cinergyt2 *cinergyt2)
 318 {
 319         int i;
 320
 321         cinergyt2_control_stream_transfer(cinergyt2, 0);
 322
 323         for (i=0; i<STREAM_URB_COUNT; i++)
 324                 usb_kill_urb(cinergyt2->stream_urb[i]);
 325 }
 326
 327 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
 328 {
 329         int i, err;
 330
 331         for (i=0; i<STREAM_URB_COUNT; i++) {
 332                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
 333                         cinergyt2_stop_stream_xfer(cinergyt2);
 334                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
 335                         return err;
 336                 }
 337         }
 338
 339         cinergyt2_control_stream_transfer(cinergyt2, 1);
 340         return 0;
 341 }
 342
 343 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 344 {
 345         struct dvb_demux *demux = dvbdmxfeed->demux;
 346         struct cinergyt2 *cinergyt2 = demux->priv;
 347
 348         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 349                 return -ERESTARTSYS;
 350
 351         if (cinergyt2->streaming == 0)
 352                 cinergyt2_start_stream_xfer(cinergyt2);
 353
 354         cinergyt2->streaming++;
 355         mutex_unlock(&cinergyt2->sem);
 356         return 0;
 357 }
 358
 359 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 360 {
 361         struct dvb_demux *demux = dvbdmxfeed->demux;
 362         struct cinergyt2 *cinergyt2 = demux->priv;
 363
 364         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 365                 return -ERESTARTSYS;
 366
 367         if (--cinergyt2->streaming == 0)
 368                 cinergyt2_stop_stream_xfer(cinergyt2);
 369
 370         mutex_unlock(&cinergyt2->sem);
 371         return 0;
 372 }
 373
 374 /**
 375  *  convert linux-dvb frontend parameter set into TPS.
 376  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
 377  *
 378  *  This function is probably reusable and may better get placed in a support
 379  *  library.
 380  *
 381  *  We replace errornous fields by default TPS fields (the ones with value 0).
 382  */
 383 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
 384 {
 385         struct dvb_ofdm_parameters *op = &p->u.ofdm;
 386         uint16_t tps = 0;
 387
 388         switch (op->code_rate_HP) {
 389                 case FEC_2_3:
 390                         tps |= (1 << 7);
 391                         break;
 392                 case FEC_3_4:
 393                         tps |= (2 << 7);
 394                         break;
 395                 case FEC_5_6:
 396                         tps |= (3 << 7);
 397                         break;
 398                 case FEC_7_8:
 399                         tps |= (4 << 7);
 400                         break;
 401                 case FEC_1_2:
 402                 case FEC_AUTO:
 403                 default:
 404                         /* tps |= (0 << 7) */;
 405         }
 406
 407         switch (op->code_rate_LP) {
 408                 case FEC_2_3:
 409                         tps |= (1 << 4);
 410                         break;
 411                 case FEC_3_4:
 412                         tps |= (2 << 4);
 413                         break;
 414                 case FEC_5_6:
 415                         tps |= (3 << 4);
 416                         break;
 417                 case FEC_7_8:
 418                         tps |= (4 << 4);
 419                         break;
 420                 case FEC_1_2:
 421                 case FEC_AUTO:
 422                 default:
 423                         /* tps |= (0 << 4) */;
 424         }
 425
 426         switch (op->constellation) {
 427                 case QAM_16:
 428                         tps |= (1 << 13);
 429                         break;
 430                 case QAM_64:
 431                         tps |= (2 << 13);
 432                         break;
 433                 case QPSK:
 434                 default:
 435                         /* tps |= (0 << 13) */;
 436         }
 437
 438         switch (op->transmission_mode) {
 439                 case TRANSMISSION_MODE_8K:
 440                         tps |= (1 << 0);
 441                         break;
 442                 case TRANSMISSION_MODE_2K:
 443                 default:
 444                         /* tps |= (0 << 0) */;
 445         }
 446
 447         switch (op->guard_interval) {
 448                 case GUARD_INTERVAL_1_16:
 449                         tps |= (1 << 2);
 450                         break;
 451                 case GUARD_INTERVAL_1_8:
 452                         tps |= (2 << 2);
 453                         break;
 454                 case GUARD_INTERVAL_1_4:
 455                         tps |= (3 << 2);
 456                         break;
 457                 case GUARD_INTERVAL_1_32:
 458                 default:
 459                         /* tps |= (0 << 2) */;
 460         }
 461
 462         switch (op->hierarchy_information) {
 463                 case HIERARCHY_1:
 464                         tps |= (1 << 10);
 465                         break;
 466                 case HIERARCHY_2:
 467                         tps |= (2 << 10);
 468                         break;
 469                 case HIERARCHY_4:
 470                         tps |= (3 << 10);
 471                         break;
 472                 case HIERARCHY_NONE:
 473                 default:
 474                         /* tps |= (0 << 10) */;
 475         }
 476
 477         return tps;
 478 }
 479
 480 static int cinergyt2_open (struct inode *inode, struct file *file)
 481 {
 482         struct dvb_device *dvbdev = file->private_data;
 483         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 484         int err = -ERESTARTSYS;
 485
 486         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->wq_sem))
 487                 goto out;
 488
 489         if (mutex_lock_interruptible(&cinergyt2->sem))
 490                 goto out_unlock1;
 491
 492         if ((err = dvb_generic_open(inode, file)))
 493                 goto out_unlock2;
 494
 495         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 496                 cinergyt2_sleep(cinergyt2, 0);
 497                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 498         }
 499
 500         atomic_inc(&cinergyt2->inuse);
 501
 502 out_unlock2:
 503         mutex_unlock(&cinergyt2->sem);
 504 out_unlock1:
 505         mutex_unlock(&cinergyt2->wq_sem);
 506 out:
 507         return err;
 508 }
 509
 510 static void cinergyt2_unregister(struct cinergyt2 *cinergyt2)
 511 {
 512         dvb_net_release(&cinergyt2->dvbnet);
 513         dvb_dmxdev_release(&cinergyt2->dmxdev);
 514         dvb_dmx_release(&cinergyt2->demux);
 515         dvb_unregister_device(cinergyt2->fedev);
 516         dvb_unregister_adapter(&cinergyt2->adapter);
 517
 518         cinergyt2_free_stream_urbs(cinergyt2);
 519         kfree(cinergyt2);
 520 }
 521
 522 static int cinergyt2_release (struct inode *inode, struct file *file)
 523 {
 524         struct dvb_device *dvbdev = file->private_data;
 525         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 526
 527         mutex_lock(&cinergyt2->wq_sem);
 528
 529         if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
 530                 cancel_rearming_delayed_work(&cinergyt2->query_work);
 531
 532                 mutex_lock(&cinergyt2->sem);
 533                 cinergyt2_sleep(cinergyt2, 1);
 534                 mutex_unlock(&cinergyt2->sem);
 535         }
 536
 537         mutex_unlock(&cinergyt2->wq_sem);
 538
 539         if (atomic_dec_and_test(&cinergyt2->inuse) && cinergyt2->disconnect_pending) {
 540                 warn("delayed unregister in release");
 541                 cinergyt2_unregister(cinergyt2);
 542         }
 543
 544         return dvb_generic_release(inode, file);
 545 }
 546
 547 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
 548 {
 549         struct dvb_device *dvbdev = file->private_data;
 550         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 551        unsigned int mask = 0;
 552
 553         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 554                 return -ERESTARTSYS;
 555
 556         poll_wait(file, &cinergyt2->poll_wq, wait);
 557
 558        if (cinergyt2->pending_fe_events != 0)
 559                 mask |= (POLLIN | POLLRDNORM | POLLPRI);
 560
 561         mutex_unlock(&cinergyt2->sem);
 562
 563        return mask;
 564 }
 565
 566
 567 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
 568                      unsigned cmd, unsigned long arg)
 569 {
 570         struct dvb_device *dvbdev = file->private_data;
 571         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 572         struct dvbt_get_status_msg *stat = &cinergyt2->status;
 573         fe_status_t status = 0;
 574
 575         switch (cmd) {
 576         case FE_GET_INFO:
 577                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
 578                                     sizeof(struct dvb_frontend_info));
 579
 580         case FE_READ_STATUS:
 581                 if (0xffff - le16_to_cpu(stat->gain) > 30)
 582                         status |= FE_HAS_SIGNAL;
 583                 if (stat->lock_bits & (1 << 6))
 584                         status |= FE_HAS_LOCK;
 585                 if (stat->lock_bits & (1 << 5))
 586                         status |= FE_HAS_SYNC;
 587                 if (stat->lock_bits & (1 << 4))
 588                         status |= FE_HAS_CARRIER;
 589                 if (stat->lock_bits & (1 << 1))
 590                         status |= FE_HAS_VITERBI;
 591
 592                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
 593
 594         case FE_READ_BER:
 595                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
 596                                 (__u32 __user *) arg);
 597
 598         case FE_READ_SIGNAL_STRENGTH:
 599                 return put_user(0xffff - le16_to_cpu(stat->gain),
 600                                 (__u16 __user *) arg);
 601
 602         case FE_READ_SNR:
 603                 return put_user((stat->snr << 8) | stat->snr,
 604                                 (__u16 __user *) arg);
 605
 606         case FE_READ_UNCORRECTED_BLOCKS:
 607         {
 608                 uint32_t unc_count;
 609
 610                 unc_count = stat->uncorrected_block_count;
 611                 stat->uncorrected_block_count = 0;
 612
 613                 /* UNC are already converted to host byte order... */
 614                 return put_user(unc_count,(__u32 __user *) arg);
 615         }
 616         case FE_SET_FRONTEND:
 617         {
 618                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 619                 struct dvb_frontend_parameters p;
 620                 int err;
 621
 622                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
 623                         return -EPERM;
 624
 625                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
 626                         return -EFAULT;
 627
 628                 if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 629                         return -ERESTARTSYS;
 630
 631                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 632                 param->tps = cpu_to_le16(compute_tps(&p));
 633                 param->freq = cpu_to_le32(p.frequency / 1000);
 634                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
 635
 636                 stat->lock_bits = 0;
 637                 cinergyt2->pending_fe_events++;
 638                 wake_up_interruptible(&cinergyt2->poll_wq);
 639
 640                 err = cinergyt2_command(cinergyt2,
 641                                         (char *) param, sizeof(*param),
 642                                         NULL, 0);
 643
 644                 mutex_unlock(&cinergyt2->sem);
 645
 646                 return (err < 0) ? err : 0;
 647         }
 648
 649         case FE_GET_FRONTEND:
 650                 /**
 651                  *  trivial to implement (see struct dvbt_get_status_msg).
 652                  *  equivalent to FE_READ ioctls, but needs
 653                  *  TPS -> linux-dvb parameter set conversion. Feel free
 654                  *  to implement this and send us a patch if you need this
 655                  *  functionality.
 656                  */
 657                 break;
 658
 659         case FE_GET_EVENT:
 660         {
 661                 /**
 662                  *  for now we only fill the status field. the parameters
 663                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
 664                  */
 665                 struct dvb_frontend_event __user *e = (void __user *) arg;
 666                 if (cinergyt2->pending_fe_events == 0) {
 667                         if (file->f_flags & O_NONBLOCK)
 668                                 return -EWOULDBLOCK;
 669                         wait_event_interruptible(cinergyt2->poll_wq,
 670                                                  cinergyt2->pending_fe_events > 0);
 671                 }
 672                 cinergyt2->pending_fe_events = 0;
 673                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
 674                                         (unsigned long) &e->status);
 675         }
 676
 677         default:
 678                 ;
 679         }
 680
 681         return -EINVAL;
 682 }
 683
 684 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
 685 {
 686         struct dvb_device *dvbdev = file->private_data;
 687         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 688         int ret = 0;
 689
 690         lock_kernel();
 691
 692         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
 693                 ret = -EPERM;
 694                 goto bailout;
 695         }
 696
 697         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
 698                 ret = -EINVAL;
 699                 goto bailout;
 700         }
 701
 702         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 703         vma->vm_file = file;
 704
 705         ret = remap_pfn_range(vma, vma->vm_start,
 706                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
 707                               vma->vm_end - vma->vm_start,
 708                               vma->vm_page_prot) ? -EAGAIN : 0;
 709 bailout:
 710         unlock_kernel();
 711         return ret;
 712 }
 713
 714 static struct file_operations cinergyt2_fops = {
 715         .owner          = THIS_MODULE,
 716         .ioctl          = cinergyt2_ioctl,
 717         .poll           = cinergyt2_poll,
 718         .open           = cinergyt2_open,
 719         .release        = cinergyt2_release,
 720         .mmap           = cinergyt2_mmap
 721 };
 722
 723 static struct dvb_device cinergyt2_fe_template = {
 724         .users = ~0,
 725         .writers = 1,
 726         .readers = (~0)-1,
 727         .fops = &cinergyt2_fops
 728 };
 729
 730 #ifdef ENABLE_RC
 731
 732 static void cinergyt2_query_rc (struct work_struct *work)
 733 {
 734         struct cinergyt2 *cinergyt2 =
 735                 container_of(work, struct cinergyt2, rc_query_work.work);
 736         char buf[1] = { CINERGYT2_EP1_GET_RC_EVENTS };
 737         struct cinergyt2_rc_event rc_events[12];
 738         int n, len, i;
 739
 740         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 741                 return;
 742
 743         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
 744                                 (char *) rc_events, sizeof(rc_events));
 745         if (len < 0)
 746                 goto out;
 747         if (len == 0) {
 748                 if (time_after(jiffies, cinergyt2->last_event_jiffies +
 749                                msecs_to_jiffies(150))) {
 750                         /* stop key repeat */
 751                         if (cinergyt2->rc_input_event != KEY_MAX) {
 752                                 dprintk(1, "rc_input_event=%d Up\n", cinergyt2->rc_input_event);
 753                                 input_report_key(cinergyt2->rc_input_dev,
 754                                                  cinergyt2->rc_input_event, 0);
 755                                 input_sync(cinergyt2->rc_input_dev);
 756                                 cinergyt2->rc_input_event = KEY_MAX;
 757                         }
 758                         cinergyt2->rc_last_code = ~0;
 759                 }
 760                 goto out;
 761         }
 762         cinergyt2->last_event_jiffies = jiffies;
 763
 764         for (n = 0; n < (len / sizeof(rc_events[0])); n++) {
 765                 dprintk(1, "rc_events[%d].value = %x, type=%x\n",
 766                         n, le32_to_cpu(rc_events[n].value), rc_events[n].type);
 767
 768                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
 769                     rc_events[n].value == ~0) {
 770                         /* keyrepeat bit -> just repeat last rc_input_event */
 771                 } else {
 772                         cinergyt2->rc_input_event = KEY_MAX;
 773                         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3) {
 774                                 if (rc_keys[i + 0] == rc_events[n].type &&
 775                                     rc_keys[i + 1] == le32_to_cpu(rc_events[n].value)) {
 776                                         cinergyt2->rc_input_event = rc_keys[i + 2];
 777                                         break;
 778                                 }
 779                         }
 780                 }
 781
 782                 if (cinergyt2->rc_input_event != KEY_MAX) {
 783                         if (rc_events[n].value == cinergyt2->rc_last_code &&
 784                             cinergyt2->rc_last_code != ~0) {
 785                                 /* emit a key-up so the double event is recognized */
 786                                 dprintk(1, "rc_input_event=%d UP\n", cinergyt2->rc_input_event);
 787                                 input_report_key(cinergyt2->rc_input_dev,
 788                                                  cinergyt2->rc_input_event, 0);
 789                         }
 790                         dprintk(1, "rc_input_event=%d\n", cinergyt2->rc_input_event);
 791                         input_report_key(cinergyt2->rc_input_dev,
 792                                          cinergyt2->rc_input_event, 1);
 793                         input_sync(cinergyt2->rc_input_dev);
 794                         cinergyt2->rc_last_code = rc_events[n].value;
 795                 }
 796         }
 797
 798 out:
 799         schedule_delayed_work(&cinergyt2->rc_query_work,
 800                               msecs_to_jiffies(RC_QUERY_INTERVAL));
 801
 802         mutex_unlock(&cinergyt2->sem);
 803 }
 804
 805 static int cinergyt2_register_rc(struct cinergyt2 *cinergyt2)
 806 {
 807         struct input_dev *input_dev;
 808         int i;
 809         int err;
 810
 811         input_dev = input_allocate_device();
 812         if (!input_dev)
 813                 return -ENOMEM;
 814
 815         usb_make_path(cinergyt2->udev, cinergyt2->phys, sizeof(cinergyt2->phys));
 816         strlcat(cinergyt2->phys, "/input0", sizeof(cinergyt2->phys));
 817         cinergyt2->rc_input_event = KEY_MAX;
 818         cinergyt2->rc_last_code = ~0;
 819         INIT_DELAYED_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc);
 820
 821         input_dev->name = DRIVER_NAME " remote control";
 822         input_dev->phys = cinergyt2->phys;
 823         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
 824         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3)
 825                 set_bit(rc_keys[i + 2], input_dev->keybit);
 826         input_dev->keycodesize = 0;
 827         input_dev->keycodemax = 0;
 828         input_dev->id.bustype = BUS_USB;
 829         input_dev->id.vendor = cinergyt2->udev->descriptor.idVendor;
 830         input_dev->id.product = cinergyt2->udev->descriptor.idProduct;
 831         input_dev->id.version = 1;
 832         input_dev->dev.parent = &cinergyt2->udev->dev;
 833
 834         err = input_register_device(input_dev);
 835         if (err) {
 836                 input_free_device(input_dev);
 837                 return err;
 838         }
 839
 840         cinergyt2->rc_input_dev = input_dev;
 841         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 842
 843         return 0;
 844 }
 845
 846 static void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2)
 847 {
 848         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
 849         input_unregister_device(cinergyt2->rc_input_dev);
 850 }
 851
 852 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2)
 853 {
 854         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
 855 }
 856
 857 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2)
 858 {
 859         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 860 }
 861
 862 #else
 863
 864 static inline int cinergyt2_register_rc(struct cinergyt2 *cinergyt2) { return 0; }
 865 static inline void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2) { }
 866 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2) { }
 867 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2) { }
 868
 869 #endif /* ENABLE_RC */
 870
 871 static void cinergyt2_query (struct work_struct *work)
 872 {
 873         struct cinergyt2 *cinergyt2 =
 874                 container_of(work, struct cinergyt2, query_work.work);
 875         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
 876         struct dvbt_get_status_msg *s = &cinergyt2->status;
 877         uint8_t lock_bits;
 878         uint32_t unc;
 879
 880         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 881                 return;
 882
 883         unc = s->uncorrected_block_count;
 884         lock_bits = s->lock_bits;
 885
 886         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
 887
 888         unc += le32_to_cpu(s->uncorrected_block_count);
 889         s->uncorrected_block_count = unc;
 890
 891         if (lock_bits != s->lock_bits) {
 892                 wake_up_interruptible(&cinergyt2->poll_wq);
 893                 cinergyt2->pending_fe_events++;
 894         }
 895
 896         schedule_delayed_work(&cinergyt2->query_work,
 897                               msecs_to_jiffies(QUERY_INTERVAL));
 898
 899         mutex_unlock(&cinergyt2->sem);
 900 }
 901
 902 static int cinergyt2_probe (struct usb_interface *intf,
 903                   const struct usb_device_id *id)
 904 {
 905         struct cinergyt2 *cinergyt2;
 906         int err;
 907
 908         if (!(cinergyt2 = kzalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
 909                 dprintk(1, "out of memory?!?\n");
 910                 return -ENOMEM;
 911         }
 912
 913         usb_set_intfdata (intf, (void *) cinergyt2);
 914
 915         mutex_init(&cinergyt2->sem);
 916         mutex_init(&cinergyt2->wq_sem);
 917         init_waitqueue_head (&cinergyt2->poll_wq);
 918         INIT_DELAYED_WORK(&cinergyt2->query_work, cinergyt2_query);
 919
 920         cinergyt2->udev = interface_to_usbdev(intf);
 921         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 922
 923         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
 924                 dprintk(1, "unable to allocate stream urbs\n");
 925                 kfree(cinergyt2);
 926                 return -ENOMEM;
 927         }
 928
 929         if ((err = dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME, THIS_MODULE, &cinergyt2->udev->dev)) < 0) {
 930                 kfree(cinergyt2);
 931                 return err;
 932         }
 933
 934         cinergyt2->demux.priv = cinergyt2;
 935         cinergyt2->demux.filternum = 256;
 936         cinergyt2->demux.feednum = 256;
 937         cinergyt2->demux.start_feed = cinergyt2_start_feed;
 938         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
 939         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
 940                                             DMX_SECTION_FILTERING |
 941                                             DMX_MEMORY_BASED_FILTERING;
 942
 943         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
 944                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
 945                 goto bailout;
 946         }
 947
 948         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
 949         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
 950         cinergyt2->dmxdev.capabilities = 0;
 951
 952         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, &cinergyt2->adapter)) < 0) {
 953                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
 954                 goto bailout;
 955         }
 956
 957         if (dvb_net_init(&cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
 958                 dprintk(1, "dvb_net_init() failed!\n");
 959
 960         dvb_register_device(&cinergyt2->adapter, &cinergyt2->fedev,
 961                             &cinergyt2_fe_template, cinergyt2,
 962                             DVB_DEVICE_FRONTEND);
 963
 964         err = cinergyt2_register_rc(cinergyt2);
 965         if (err)
 966                 goto bailout;
 967
 968         return 0;
 969
 970 bailout:
 971         dvb_net_release(&cinergyt2->dvbnet);
 972         dvb_dmxdev_release(&cinergyt2->dmxdev);
 973         dvb_dmx_release(&cinergyt2->demux);
 974         dvb_unregister_adapter(&cinergyt2->adapter);
 975         cinergyt2_free_stream_urbs(cinergyt2);
 976         kfree(cinergyt2);
 977         return -ENOMEM;
 978 }
 979
 980 static void cinergyt2_disconnect (struct usb_interface *intf)
 981 {
 982         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 983
 984         cinergyt2_unregister_rc(cinergyt2);
 985         cancel_rearming_delayed_work(&cinergyt2->query_work);
 986         wake_up_interruptible(&cinergyt2->poll_wq);
 987
 988         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
 989         cinergyt2->disconnect_pending = 1;
 990
 991         if (!atomic_read(&cinergyt2->inuse))
 992                 cinergyt2_unregister(cinergyt2);
 993 }
 994
 995 static int cinergyt2_suspend (struct usb_interface *intf, pm_message_t state)
 996 {
 997         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 998
 999         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->wq_sem))
1000                 return -ERESTARTSYS;
1001
1002         cinergyt2_suspend_rc(cinergyt2);
1003         cancel_rearming_delayed_work(&cinergyt2->query_work);
1004
1005         mutex_lock(&cinergyt2->sem);
1006         if (cinergyt2->streaming)
1007                 cinergyt2_stop_stream_xfer(cinergyt2);
1008         cinergyt2_sleep(cinergyt2, 1);
1009         mutex_unlock(&cinergyt2->sem);
1010
1011         return 0;
1012 }
1013
1014 static int cinergyt2_resume (struct usb_interface *intf)
1015 {
1016         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1017         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
1018         int err = -ERESTARTSYS;
1019
1020         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->wq_sem))
1021                 goto out;
1022
1023         if (mutex_lock_interruptible(&cinergyt2->sem))
1024                 goto out_unlock1;
1025
1026         err = 0;
1027
1028         if (!cinergyt2->sleeping) {
1029                 cinergyt2_sleep(cinergyt2, 0);
1030                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
1031                 if (cinergyt2->streaming)
1032                         cinergyt2_start_stream_xfer(cinergyt2);
1033                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
1034         }
1035
1036         cinergyt2_resume_rc(cinergyt2);
1037
1038         mutex_unlock(&cinergyt2->sem);
1039 out_unlock1:
1040         mutex_unlock(&cinergyt2->wq_sem);
1041 out:
1042         return err;
1043 }
1044
1045 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
1046         { USB_DEVICE(0x0ccd, 0x0038) },
1047         { 0 }
1048 };
1049
1050 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
1051
1052 static struct usb_driver cinergyt2_driver = {
1053         .name   = "cinergyT2",
1054         .probe  = cinergyt2_probe,
1055         .disconnect     = cinergyt2_disconnect,
1056         .suspend        = cinergyt2_suspend,
1057         .resume         = cinergyt2_resume,
1058         .id_table       = cinergyt2_table
1059 };
1060
1061 static int __init cinergyt2_init (void)
1062 {
1063         int err;
1064
1065         if ((err = usb_register(&cinergyt2_driver)) < 0)
1066                 dprintk(1, "usb_register() failed! (err %i)\n", err);
1067
1068         return err;
1069 }
1070
1071 static void __exit cinergyt2_exit (void)
1072 {
1073         usb_deregister(&cinergyt2_driver);
1074 }
1075
1076 module_init (cinergyt2_init);
1077 module_exit (cinergyt2_exit);
1078
1079 MODULE_LICENSE("GPL");
1080 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");