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         uint32_t freq;
  86         uint8_t bandwidth;
  87         uint16_t tps;
  88         uint8_t flags;
  89 } __attribute__((packed));
  90
  91 struct dvbt_get_status_msg {
  92         uint32_t freq;
  93         uint8_t bandwidth;
  94         uint16_t tps;
  95         uint8_t flags;
  96         uint16_t gain;
  97         uint8_t snr;
  98         uint32_t viterbi_error_rate;
  99         uint32_t rs_error_rate;
 100         uint32_t 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         atomic_t inuse;
 140
 141         void *streambuf;
 142         dma_addr_t streambuf_dmahandle;
 143         struct urb *stream_urb [STREAM_URB_COUNT];
 144
 145 #ifdef ENABLE_RC
 146         struct input_dev *rc_input_dev;
 147         char phys[64];
 148         struct delayed_work rc_query_work;
 149         int rc_input_event;
 150         u32 rc_last_code;
 151         unsigned long last_event_jiffies;
 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, 1000);
 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, 1000);
 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);
 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)
 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                 usb_free_urb(cinergyt2->stream_urb[i]);
 283
 284         usb_buffer_free(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 285                             cinergyt2->streambuf, cinergyt2->streambuf_dmahandle);
 286 }
 287
 288 static int cinergyt2_alloc_stream_urbs (struct cinergyt2 *cinergyt2)
 289 {
 290         int i;
 291
 292         cinergyt2->streambuf = usb_buffer_alloc(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 293                                               GFP_KERNEL, &cinergyt2->streambuf_dmahandle);
 294         if (!cinergyt2->streambuf) {
 295                 dprintk(1, "failed to alloc consistent stream memory area, bailing out!\n");
 296                 return -ENOMEM;
 297         }
 298
 299         memset(cinergyt2->streambuf, 0, STREAM_URB_COUNT*STREAM_BUF_SIZE);
 300
 301         for (i=0; i<STREAM_URB_COUNT; i++) {
 302                 struct urb *urb;
 303
 304                 if (!(urb = usb_alloc_urb(0, GFP_ATOMIC))) {
 305                         dprintk(1, "failed to alloc consistent stream urbs, bailing out!\n");
 306                         cinergyt2_free_stream_urbs(cinergyt2);
 307                         return -ENOMEM;
 308                 }
 309
 310                 urb->transfer_buffer = cinergyt2->streambuf + i * STREAM_BUF_SIZE;
 311                 urb->transfer_buffer_length = STREAM_BUF_SIZE;
 312
 313                 cinergyt2->stream_urb[i] = urb;
 314         }
 315
 316         return 0;
 317 }
 318
 319 static void cinergyt2_stop_stream_xfer (struct cinergyt2 *cinergyt2)
 320 {
 321         int i;
 322
 323         cinergyt2_control_stream_transfer(cinergyt2, 0);
 324
 325         for (i=0; i<STREAM_URB_COUNT; i++)
 326                 usb_kill_urb(cinergyt2->stream_urb[i]);
 327 }
 328
 329 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
 330 {
 331         int i, err;
 332
 333         for (i=0; i<STREAM_URB_COUNT; i++) {
 334                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
 335                         cinergyt2_stop_stream_xfer(cinergyt2);
 336                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
 337                         return err;
 338                 }
 339         }
 340
 341         cinergyt2_control_stream_transfer(cinergyt2, 1);
 342         return 0;
 343 }
 344
 345 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 346 {
 347         struct dvb_demux *demux = dvbdmxfeed->demux;
 348         struct cinergyt2 *cinergyt2 = demux->priv;
 349
 350         if (cinergyt2->disconnect_pending)
 351                 return -EAGAIN;
 352         if (mutex_lock_interruptible(&cinergyt2->sem))
 353                 return -ERESTARTSYS;
 354
 355         if (cinergyt2->streaming == 0)
 356                 cinergyt2_start_stream_xfer(cinergyt2);
 357
 358         cinergyt2->streaming++;
 359         mutex_unlock(&cinergyt2->sem);
 360         return 0;
 361 }
 362
 363 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 364 {
 365         struct dvb_demux *demux = dvbdmxfeed->demux;
 366         struct cinergyt2 *cinergyt2 = demux->priv;
 367
 368         if (cinergyt2->disconnect_pending)
 369                 return -EAGAIN;
 370         if (mutex_lock_interruptible(&cinergyt2->sem))
 371                 return -ERESTARTSYS;
 372
 373         if (--cinergyt2->streaming == 0)
 374                 cinergyt2_stop_stream_xfer(cinergyt2);
 375
 376         mutex_unlock(&cinergyt2->sem);
 377         return 0;
 378 }
 379
 380 /**
 381  *  convert linux-dvb frontend parameter set into TPS.
 382  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
 383  *
 384  *  This function is probably reusable and may better get placed in a support
 385  *  library.
 386  *
 387  *  We replace errornous fields by default TPS fields (the ones with value 0).
 388  */
 389 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
 390 {
 391         struct dvb_ofdm_parameters *op = &p->u.ofdm;
 392         uint16_t tps = 0;
 393
 394         switch (op->code_rate_HP) {
 395                 case FEC_2_3:
 396                         tps |= (1 << 7);
 397                         break;
 398                 case FEC_3_4:
 399                         tps |= (2 << 7);
 400                         break;
 401                 case FEC_5_6:
 402                         tps |= (3 << 7);
 403                         break;
 404                 case FEC_7_8:
 405                         tps |= (4 << 7);
 406                         break;
 407                 case FEC_1_2:
 408                 case FEC_AUTO:
 409                 default:
 410                         /* tps |= (0 << 7) */;
 411         }
 412
 413         switch (op->code_rate_LP) {
 414                 case FEC_2_3:
 415                         tps |= (1 << 4);
 416                         break;
 417                 case FEC_3_4:
 418                         tps |= (2 << 4);
 419                         break;
 420                 case FEC_5_6:
 421                         tps |= (3 << 4);
 422                         break;
 423                 case FEC_7_8:
 424                         tps |= (4 << 4);
 425                         break;
 426                 case FEC_1_2:
 427                 case FEC_AUTO:
 428                 default:
 429                         /* tps |= (0 << 4) */;
 430         }
 431
 432         switch (op->constellation) {
 433                 case QAM_16:
 434                         tps |= (1 << 13);
 435                         break;
 436                 case QAM_64:
 437                         tps |= (2 << 13);
 438                         break;
 439                 case QPSK:
 440                 default:
 441                         /* tps |= (0 << 13) */;
 442         }
 443
 444         switch (op->transmission_mode) {
 445                 case TRANSMISSION_MODE_8K:
 446                         tps |= (1 << 0);
 447                         break;
 448                 case TRANSMISSION_MODE_2K:
 449                 default:
 450                         /* tps |= (0 << 0) */;
 451         }
 452
 453         switch (op->guard_interval) {
 454                 case GUARD_INTERVAL_1_16:
 455                         tps |= (1 << 2);
 456                         break;
 457                 case GUARD_INTERVAL_1_8:
 458                         tps |= (2 << 2);
 459                         break;
 460                 case GUARD_INTERVAL_1_4:
 461                         tps |= (3 << 2);
 462                         break;
 463                 case GUARD_INTERVAL_1_32:
 464                 default:
 465                         /* tps |= (0 << 2) */;
 466         }
 467
 468         switch (op->hierarchy_information) {
 469                 case HIERARCHY_1:
 470                         tps |= (1 << 10);
 471                         break;
 472                 case HIERARCHY_2:
 473                         tps |= (2 << 10);
 474                         break;
 475                 case HIERARCHY_4:
 476                         tps |= (3 << 10);
 477                         break;
 478                 case HIERARCHY_NONE:
 479                 default:
 480                         /* tps |= (0 << 10) */;
 481         }
 482
 483         return tps;
 484 }
 485
 486 static int cinergyt2_open (struct inode *inode, struct file *file)
 487 {
 488         struct dvb_device *dvbdev = file->private_data;
 489         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 490         int err = -EAGAIN;
 491
 492         if (cinergyt2->disconnect_pending)
 493                 goto out;
 494         err = mutex_lock_interruptible(&cinergyt2->wq_sem);
 495         if (err)
 496                 goto out;
 497
 498         err = mutex_lock_interruptible(&cinergyt2->sem);
 499         if (err)
 500                 goto out_unlock1;
 501
 502         if ((err = dvb_generic_open(inode, file)))
 503                 goto out_unlock2;
 504
 505         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 506                 cinergyt2_sleep(cinergyt2, 0);
 507                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 508         }
 509
 510         atomic_inc(&cinergyt2->inuse);
 511
 512 out_unlock2:
 513         mutex_unlock(&cinergyt2->sem);
 514 out_unlock1:
 515         mutex_unlock(&cinergyt2->wq_sem);
 516 out:
 517         return err;
 518 }
 519
 520 static void cinergyt2_unregister(struct cinergyt2 *cinergyt2)
 521 {
 522         dvb_net_release(&cinergyt2->dvbnet);
 523         dvb_dmxdev_release(&cinergyt2->dmxdev);
 524         dvb_dmx_release(&cinergyt2->demux);
 525         dvb_unregister_device(cinergyt2->fedev);
 526         dvb_unregister_adapter(&cinergyt2->adapter);
 527
 528         cinergyt2_free_stream_urbs(cinergyt2);
 529         kfree(cinergyt2);
 530 }
 531
 532 static int cinergyt2_release (struct inode *inode, struct file *file)
 533 {
 534         struct dvb_device *dvbdev = file->private_data;
 535         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 536
 537         mutex_lock(&cinergyt2->wq_sem);
 538
 539         if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
 540                 cancel_rearming_delayed_work(&cinergyt2->query_work);
 541
 542                 mutex_lock(&cinergyt2->sem);
 543                 cinergyt2_sleep(cinergyt2, 1);
 544                 mutex_unlock(&cinergyt2->sem);
 545         }
 546
 547         mutex_unlock(&cinergyt2->wq_sem);
 548
 549         if (atomic_dec_and_test(&cinergyt2->inuse) && cinergyt2->disconnect_pending) {
 550                 warn("delayed unregister in release");
 551                 cinergyt2_unregister(cinergyt2);
 552         }
 553
 554         return dvb_generic_release(inode, file);
 555 }
 556
 557 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
 558 {
 559         struct dvb_device *dvbdev = file->private_data;
 560         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 561         unsigned int mask = 0;
 562
 563         if (cinergyt2->disconnect_pending)
 564                 return -EAGAIN;
 565         if (mutex_lock_interruptible(&cinergyt2->sem))
 566                 return -ERESTARTSYS;
 567
 568         poll_wait(file, &cinergyt2->poll_wq, wait);
 569
 570         if (cinergyt2->pending_fe_events != 0)
 571                 mask |= (POLLIN | POLLRDNORM | POLLPRI);
 572
 573         mutex_unlock(&cinergyt2->sem);
 574
 575         return mask;
 576 }
 577
 578
 579 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
 580                      unsigned cmd, unsigned long arg)
 581 {
 582         struct dvb_device *dvbdev = file->private_data;
 583         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 584         struct dvbt_get_status_msg *stat = &cinergyt2->status;
 585         fe_status_t status = 0;
 586
 587         switch (cmd) {
 588         case FE_GET_INFO:
 589                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
 590                                     sizeof(struct dvb_frontend_info));
 591
 592         case FE_READ_STATUS:
 593                 if (0xffff - le16_to_cpu(stat->gain) > 30)
 594                         status |= FE_HAS_SIGNAL;
 595                 if (stat->lock_bits & (1 << 6))
 596                         status |= FE_HAS_LOCK;
 597                 if (stat->lock_bits & (1 << 5))
 598                         status |= FE_HAS_SYNC;
 599                 if (stat->lock_bits & (1 << 4))
 600                         status |= FE_HAS_CARRIER;
 601                 if (stat->lock_bits & (1 << 1))
 602                         status |= FE_HAS_VITERBI;
 603
 604                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
 605
 606         case FE_READ_BER:
 607                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
 608                                 (__u32 __user *) arg);
 609
 610         case FE_READ_SIGNAL_STRENGTH:
 611                 return put_user(0xffff - le16_to_cpu(stat->gain),
 612                                 (__u16 __user *) arg);
 613
 614         case FE_READ_SNR:
 615                 return put_user((stat->snr << 8) | stat->snr,
 616                                 (__u16 __user *) arg);
 617
 618         case FE_READ_UNCORRECTED_BLOCKS:
 619         {
 620                 uint32_t unc_count;
 621
 622                 unc_count = stat->uncorrected_block_count;
 623                 stat->uncorrected_block_count = 0;
 624
 625                 /* UNC are already converted to host byte order... */
 626                 return put_user(unc_count,(__u32 __user *) arg);
 627         }
 628         case FE_SET_FRONTEND:
 629         {
 630                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 631                 struct dvb_frontend_parameters p;
 632                 int err;
 633
 634                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
 635                         return -EPERM;
 636
 637                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
 638                         return -EFAULT;
 639
 640                 if (cinergyt2->disconnect_pending)
 641                         return -EAGAIN;
 642                 if (mutex_lock_interruptible(&cinergyt2->sem))
 643                         return -ERESTARTSYS;
 644
 645                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 646                 param->tps = cpu_to_le16(compute_tps(&p));
 647                 param->freq = cpu_to_le32(p.frequency / 1000);
 648                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
 649
 650                 stat->lock_bits = 0;
 651                 cinergyt2->pending_fe_events++;
 652                 wake_up_interruptible(&cinergyt2->poll_wq);
 653
 654                 err = cinergyt2_command(cinergyt2,
 655                                         (char *) param, sizeof(*param),
 656                                         NULL, 0);
 657
 658                 mutex_unlock(&cinergyt2->sem);
 659
 660                 return (err < 0) ? err : 0;
 661         }
 662
 663         case FE_GET_FRONTEND:
 664                 /**
 665                  *  trivial to implement (see struct dvbt_get_status_msg).
 666                  *  equivalent to FE_READ ioctls, but needs
 667                  *  TPS -> linux-dvb parameter set conversion. Feel free
 668                  *  to implement this and send us a patch if you need this
 669                  *  functionality.
 670                  */
 671                 break;
 672
 673         case FE_GET_EVENT:
 674         {
 675                 /**
 676                  *  for now we only fill the status field. the parameters
 677                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
 678                  */
 679                 struct dvb_frontend_event __user *e = (void __user *) arg;
 680                 if (cinergyt2->pending_fe_events == 0) {
 681                         if (file->f_flags & O_NONBLOCK)
 682                                 return -EWOULDBLOCK;
 683                         wait_event_interruptible(cinergyt2->poll_wq,
 684                                                  cinergyt2->pending_fe_events > 0);
 685                 }
 686                 cinergyt2->pending_fe_events = 0;
 687                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
 688                                         (unsigned long) &e->status);
 689         }
 690
 691         default:
 692                 ;
 693         }
 694
 695         return -EINVAL;
 696 }
 697
 698 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
 699 {
 700         struct dvb_device *dvbdev = file->private_data;
 701         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 702         int ret = 0;
 703
 704         lock_kernel();
 705
 706         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
 707                 ret = -EPERM;
 708                 goto bailout;
 709         }
 710
 711         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
 712                 ret = -EINVAL;
 713                 goto bailout;
 714         }
 715
 716         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 717         vma->vm_file = file;
 718
 719         ret = remap_pfn_range(vma, vma->vm_start,
 720                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
 721                               vma->vm_end - vma->vm_start,
 722                               vma->vm_page_prot) ? -EAGAIN : 0;
 723 bailout:
 724         unlock_kernel();
 725         return ret;
 726 }
 727
 728 static struct file_operations cinergyt2_fops = {
 729         .owner          = THIS_MODULE,
 730         .ioctl          = cinergyt2_ioctl,
 731         .poll           = cinergyt2_poll,
 732         .open           = cinergyt2_open,
 733         .release        = cinergyt2_release,
 734         .mmap           = cinergyt2_mmap
 735 };
 736
 737 static struct dvb_device cinergyt2_fe_template = {
 738         .users = ~0,
 739         .writers = 1,
 740         .readers = (~0)-1,
 741         .fops = &cinergyt2_fops
 742 };
 743
 744 #ifdef ENABLE_RC
 745
 746 static void cinergyt2_query_rc (struct work_struct *work)
 747 {
 748         struct cinergyt2 *cinergyt2 =
 749                 container_of(work, struct cinergyt2, rc_query_work.work);
 750         char buf[1] = { CINERGYT2_EP1_GET_RC_EVENTS };
 751         struct cinergyt2_rc_event rc_events[12];
 752         int n, len, i;
 753
 754         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 755                 return;
 756
 757         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
 758                                 (char *) rc_events, sizeof(rc_events));
 759         if (len < 0)
 760                 goto out;
 761         if (len == 0) {
 762                 if (time_after(jiffies, cinergyt2->last_event_jiffies +
 763                                msecs_to_jiffies(150))) {
 764                         /* stop key repeat */
 765                         if (cinergyt2->rc_input_event != KEY_MAX) {
 766                                 dprintk(1, "rc_input_event=%d Up\n", cinergyt2->rc_input_event);
 767                                 input_report_key(cinergyt2->rc_input_dev,
 768                                                  cinergyt2->rc_input_event, 0);
 769                                 input_sync(cinergyt2->rc_input_dev);
 770                                 cinergyt2->rc_input_event = KEY_MAX;
 771                         }
 772                         cinergyt2->rc_last_code = ~0;
 773                 }
 774                 goto out;
 775         }
 776         cinergyt2->last_event_jiffies = jiffies;
 777
 778         for (n = 0; n < (len / sizeof(rc_events[0])); n++) {
 779                 dprintk(1, "rc_events[%d].value = %x, type=%x\n",
 780                         n, le32_to_cpu(rc_events[n].value), rc_events[n].type);
 781
 782                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
 783                     rc_events[n].value == ~0) {
 784                         /* keyrepeat bit -> just repeat last rc_input_event */
 785                 } else {
 786                         cinergyt2->rc_input_event = KEY_MAX;
 787                         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3) {
 788                                 if (rc_keys[i + 0] == rc_events[n].type &&
 789                                     rc_keys[i + 1] == le32_to_cpu(rc_events[n].value)) {
 790                                         cinergyt2->rc_input_event = rc_keys[i + 2];
 791                                         break;
 792                                 }
 793                         }
 794                 }
 795
 796                 if (cinergyt2->rc_input_event != KEY_MAX) {
 797                         if (rc_events[n].value == cinergyt2->rc_last_code &&
 798                             cinergyt2->rc_last_code != ~0) {
 799                                 /* emit a key-up so the double event is recognized */
 800                                 dprintk(1, "rc_input_event=%d UP\n", cinergyt2->rc_input_event);
 801                                 input_report_key(cinergyt2->rc_input_dev,
 802                                                  cinergyt2->rc_input_event, 0);
 803                         }
 804                         dprintk(1, "rc_input_event=%d\n", cinergyt2->rc_input_event);
 805                         input_report_key(cinergyt2->rc_input_dev,
 806                                          cinergyt2->rc_input_event, 1);
 807                         input_sync(cinergyt2->rc_input_dev);
 808                         cinergyt2->rc_last_code = rc_events[n].value;
 809                 }
 810         }
 811
 812 out:
 813         schedule_delayed_work(&cinergyt2->rc_query_work,
 814                               msecs_to_jiffies(RC_QUERY_INTERVAL));
 815
 816         mutex_unlock(&cinergyt2->sem);
 817 }
 818
 819 static int cinergyt2_register_rc(struct cinergyt2 *cinergyt2)
 820 {
 821         struct input_dev *input_dev;
 822         int i;
 823         int err;
 824
 825         input_dev = input_allocate_device();
 826         if (!input_dev)
 827                 return -ENOMEM;
 828
 829         usb_make_path(cinergyt2->udev, cinergyt2->phys, sizeof(cinergyt2->phys));
 830         strlcat(cinergyt2->phys, "/input0", sizeof(cinergyt2->phys));
 831         cinergyt2->rc_input_event = KEY_MAX;
 832         cinergyt2->rc_last_code = ~0;
 833         INIT_DELAYED_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc);
 834
 835         input_dev->name = DRIVER_NAME " remote control";
 836         input_dev->phys = cinergyt2->phys;
 837         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
 838         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3)
 839                 set_bit(rc_keys[i + 2], input_dev->keybit);
 840         input_dev->keycodesize = 0;
 841         input_dev->keycodemax = 0;
 842         input_dev->id.bustype = BUS_USB;
 843         input_dev->id.vendor = cinergyt2->udev->descriptor.idVendor;
 844         input_dev->id.product = cinergyt2->udev->descriptor.idProduct;
 845         input_dev->id.version = 1;
 846         input_dev->dev.parent = &cinergyt2->udev->dev;
 847
 848         err = input_register_device(input_dev);
 849         if (err) {
 850                 input_free_device(input_dev);
 851                 return err;
 852         }
 853
 854         cinergyt2->rc_input_dev = input_dev;
 855         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 856
 857         return 0;
 858 }
 859
 860 static void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2)
 861 {
 862         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
 863         input_unregister_device(cinergyt2->rc_input_dev);
 864 }
 865
 866 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2)
 867 {
 868         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
 869 }
 870
 871 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2)
 872 {
 873         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 874 }
 875
 876 #else
 877
 878 static inline int cinergyt2_register_rc(struct cinergyt2 *cinergyt2) { return 0; }
 879 static inline void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2) { }
 880 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2) { }
 881 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2) { }
 882
 883 #endif /* ENABLE_RC */
 884
 885 static void cinergyt2_query (struct work_struct *work)
 886 {
 887         struct cinergyt2 *cinergyt2 =
 888                 container_of(work, struct cinergyt2, query_work.work);
 889         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
 890         struct dvbt_get_status_msg *s = &cinergyt2->status;
 891         uint8_t lock_bits;
 892         uint32_t unc;
 893
 894         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 895                 return;
 896
 897         unc = s->uncorrected_block_count;
 898         lock_bits = s->lock_bits;
 899
 900         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
 901
 902         unc += le32_to_cpu(s->uncorrected_block_count);
 903         s->uncorrected_block_count = unc;
 904
 905         if (lock_bits != s->lock_bits) {
 906                 wake_up_interruptible(&cinergyt2->poll_wq);
 907                 cinergyt2->pending_fe_events++;
 908         }
 909
 910         schedule_delayed_work(&cinergyt2->query_work,
 911                               msecs_to_jiffies(QUERY_INTERVAL));
 912
 913         mutex_unlock(&cinergyt2->sem);
 914 }
 915
 916 static int cinergyt2_probe (struct usb_interface *intf,
 917                   const struct usb_device_id *id)
 918 {
 919         struct cinergyt2 *cinergyt2;
 920         int err;
 921
 922         if (!(cinergyt2 = kzalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
 923                 dprintk(1, "out of memory?!?\n");
 924                 return -ENOMEM;
 925         }
 926
 927         usb_set_intfdata (intf, (void *) cinergyt2);
 928
 929         mutex_init(&cinergyt2->sem);
 930         mutex_init(&cinergyt2->wq_sem);
 931         init_waitqueue_head (&cinergyt2->poll_wq);
 932         INIT_DELAYED_WORK(&cinergyt2->query_work, cinergyt2_query);
 933
 934         cinergyt2->udev = interface_to_usbdev(intf);
 935         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 936
 937         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
 938                 dprintk(1, "unable to allocate stream urbs\n");
 939                 kfree(cinergyt2);
 940                 return -ENOMEM;
 941         }
 942
 943         err = dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME,
 944                                    THIS_MODULE, &cinergyt2->udev->dev,
 945                                    adapter_nr);
 946         if (err < 0) {
 947                 kfree(cinergyt2);
 948                 return err;
 949         }
 950
 951         cinergyt2->demux.priv = cinergyt2;
 952         cinergyt2->demux.filternum = 256;
 953         cinergyt2->demux.feednum = 256;
 954         cinergyt2->demux.start_feed = cinergyt2_start_feed;
 955         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
 956         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
 957                                             DMX_SECTION_FILTERING |
 958                                             DMX_MEMORY_BASED_FILTERING;
 959
 960         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
 961                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
 962                 goto bailout;
 963         }
 964
 965         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
 966         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
 967         cinergyt2->dmxdev.capabilities = 0;
 968
 969         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, &cinergyt2->adapter)) < 0) {
 970                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
 971                 goto bailout;
 972         }
 973
 974         if (dvb_net_init(&cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
 975                 dprintk(1, "dvb_net_init() failed!\n");
 976
 977         dvb_register_device(&cinergyt2->adapter, &cinergyt2->fedev,
 978                             &cinergyt2_fe_template, cinergyt2,
 979                             DVB_DEVICE_FRONTEND);
 980
 981         err = cinergyt2_register_rc(cinergyt2);
 982         if (err)
 983                 goto bailout;
 984
 985         return 0;
 986
 987 bailout:
 988         dvb_net_release(&cinergyt2->dvbnet);
 989         dvb_dmxdev_release(&cinergyt2->dmxdev);
 990         dvb_dmx_release(&cinergyt2->demux);
 991         dvb_unregister_adapter(&cinergyt2->adapter);
 992         cinergyt2_free_stream_urbs(cinergyt2);
 993         kfree(cinergyt2);
 994         return -ENOMEM;
 995 }
 996
 997 static void cinergyt2_disconnect (struct usb_interface *intf)
 998 {
 999         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1000
1001         cinergyt2_unregister_rc(cinergyt2);
1002         cancel_rearming_delayed_work(&cinergyt2->query_work);
1003         wake_up_interruptible(&cinergyt2->poll_wq);
1004
1005         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
1006         cinergyt2->disconnect_pending = 1;
1007
1008         if (!atomic_read(&cinergyt2->inuse))
1009                 cinergyt2_unregister(cinergyt2);
1010 }
1011
1012 static int cinergyt2_suspend (struct usb_interface *intf, pm_message_t state)
1013 {
1014         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1015
1016         if (cinergyt2->disconnect_pending)
1017                 return -EAGAIN;
1018         if (mutex_lock_interruptible(&cinergyt2->wq_sem))
1019                 return -ERESTARTSYS;
1020
1021         cinergyt2_suspend_rc(cinergyt2);
1022         cancel_rearming_delayed_work(&cinergyt2->query_work);
1023
1024         mutex_lock(&cinergyt2->sem);
1025         if (cinergyt2->streaming)
1026                 cinergyt2_stop_stream_xfer(cinergyt2);
1027         cinergyt2_sleep(cinergyt2, 1);
1028         mutex_unlock(&cinergyt2->sem);
1029
1030         mutex_unlock(&cinergyt2->wq_sem);
1031
1032         return 0;
1033 }
1034
1035 static int cinergyt2_resume (struct usb_interface *intf)
1036 {
1037         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1038         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
1039         int err = -EAGAIN;
1040
1041         if (cinergyt2->disconnect_pending)
1042                 goto out;
1043         err = mutex_lock_interruptible(&cinergyt2->wq_sem);
1044         if (err)
1045                 goto out;
1046
1047         err = mutex_lock_interruptible(&cinergyt2->sem);
1048         if (err)
1049                 goto out_unlock1;
1050
1051         if (!cinergyt2->sleeping) {
1052                 cinergyt2_sleep(cinergyt2, 0);
1053                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
1054                 if (cinergyt2->streaming)
1055                         cinergyt2_start_stream_xfer(cinergyt2);
1056                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
1057         }
1058
1059         cinergyt2_resume_rc(cinergyt2);
1060
1061         mutex_unlock(&cinergyt2->sem);
1062 out_unlock1:
1063         mutex_unlock(&cinergyt2->wq_sem);
1064 out:
1065         return err;
1066 }
1067
1068 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
1069         { USB_DEVICE(0x0ccd, 0x0038) },
1070         { 0 }
1071 };
1072
1073 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
1074
1075 static struct usb_driver cinergyt2_driver = {
1076         .name   = "cinergyT2",
1077         .probe  = cinergyt2_probe,
1078         .disconnect     = cinergyt2_disconnect,
1079         .suspend        = cinergyt2_suspend,
1080         .resume         = cinergyt2_resume,
1081         .id_table       = cinergyt2_table
1082 };
1083
1084 static int __init cinergyt2_init (void)
1085 {
1086         int err;
1087
1088         if ((err = usb_register(&cinergyt2_driver)) < 0)
1089                 dprintk(1, "usb_register() failed! (err %i)\n", err);
1090
1091         return err;
1092 }
1093
1094 static void __exit cinergyt2_exit (void)
1095 {
1096         usb_deregister(&cinergyt2_driver);
1097 }
1098
1099 module_init (cinergyt2_init);
1100 module_exit (cinergyt2_exit);
1101
1102 MODULE_LICENSE("GPL");
1103 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");