drivers/media/dvb/cinergyT2/cinergyT2.c

   1 /*
   2  * TerraTec Cinergy T²/qanu USB2 DVB-T adapter.
   3  *
   4  * Copyright (C) 2004 Daniel Mack <daniel@qanu.de> and
   5  *                  Holger Waechtler <holger@qanu.de>
   6  *
   7  *  Protocol Spec published on http://qanu.de/specs/terratec_cinergyT2.pdf
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  */
  24
  25 #include <linux/config.h>
  26 #include <linux/init.h>
  27 #include <linux/module.h>
  28 #include <linux/slab.h>
  29 #include <linux/usb.h>
  30 #include <linux/pci.h>
  31 #include <linux/input.h>
  32 #include <linux/dvb/frontend.h>
  33 #include <linux/mutex.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 dvb_adapter adapter;
 122         struct dvb_device *fedev;
 123         struct dmxdev dmxdev;
 124         struct dvb_net dvbnet;
 125
 126         int streaming;
 127         int sleeping;
 128
 129         struct dvbt_set_parameters_msg param;
 130         struct dvbt_get_status_msg status;
 131         struct work_struct query_work;
 132
 133         wait_queue_head_t poll_wq;
 134         int pending_fe_events;
 135         int disconnect_pending;
 136         atomic_t inuse;
 137
 138         void *streambuf;
 139         dma_addr_t streambuf_dmahandle;
 140         struct urb *stream_urb [STREAM_URB_COUNT];
 141
 142 #ifdef ENABLE_RC
 143         struct input_dev *rc_input_dev;
 144         char phys[64];
 145         struct work_struct rc_query_work;
 146         int rc_input_event;
 147         u32 rc_last_code;
 148         unsigned long last_event_jiffies;
 149 #endif
 150 };
 151
 152 enum {
 153         CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
 154         CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
 155         CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
 156 };
 157
 158 struct cinergyt2_rc_event {
 159         char type;
 160         uint32_t value;
 161 } __attribute__((packed));
 162
 163 static const uint32_t rc_keys[] = {
 164         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfe01eb04,     KEY_POWER,
 165         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfd02eb04,     KEY_1,
 166         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfc03eb04,     KEY_2,
 167         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfb04eb04,     KEY_3,
 168         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfa05eb04,     KEY_4,
 169         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf906eb04,     KEY_5,
 170         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf807eb04,     KEY_6,
 171         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf708eb04,     KEY_7,
 172         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf609eb04,     KEY_8,
 173         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf50aeb04,     KEY_9,
 174         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf30ceb04,     KEY_0,
 175         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf40beb04,     KEY_VIDEO,
 176         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf20deb04,     KEY_REFRESH,
 177         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf10eeb04,     KEY_SELECT,
 178         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf00feb04,     KEY_EPG,
 179         CINERGYT2_RC_EVENT_TYPE_NEC,    0xef10eb04,     KEY_UP,
 180         CINERGYT2_RC_EVENT_TYPE_NEC,    0xeb14eb04,     KEY_DOWN,
 181         CINERGYT2_RC_EVENT_TYPE_NEC,    0xee11eb04,     KEY_LEFT,
 182         CINERGYT2_RC_EVENT_TYPE_NEC,    0xec13eb04,     KEY_RIGHT,
 183         CINERGYT2_RC_EVENT_TYPE_NEC,    0xed12eb04,     KEY_OK,
 184         CINERGYT2_RC_EVENT_TYPE_NEC,    0xea15eb04,     KEY_TEXT,
 185         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe916eb04,     KEY_INFO,
 186         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe817eb04,     KEY_RED,
 187         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe718eb04,     KEY_GREEN,
 188         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe619eb04,     KEY_YELLOW,
 189         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe51aeb04,     KEY_BLUE,
 190         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe31ceb04,     KEY_VOLUMEUP,
 191         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe11eeb04,     KEY_VOLUMEDOWN,
 192         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe21deb04,     KEY_MUTE,
 193         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe41beb04,     KEY_CHANNELUP,
 194         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe01feb04,     KEY_CHANNELDOWN,
 195         CINERGYT2_RC_EVENT_TYPE_NEC,    0xbf40eb04,     KEY_PAUSE,
 196         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb34ceb04,     KEY_PLAY,
 197         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa758eb04,     KEY_RECORD,
 198         CINERGYT2_RC_EVENT_TYPE_NEC,    0xab54eb04,     KEY_PREVIOUS,
 199         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb748eb04,     KEY_STOP,
 200         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa35ceb04,     KEY_NEXT
 201 };
 202
 203 static int cinergyt2_command (struct cinergyt2 *cinergyt2,
 204                               char *send_buf, int send_buf_len,
 205                               char *recv_buf, int recv_buf_len)
 206 {
 207         int actual_len;
 208         char dummy;
 209         int ret;
 210
 211         ret = usb_bulk_msg(cinergyt2->udev, usb_sndbulkpipe(cinergyt2->udev, 1),
 212                            send_buf, send_buf_len, &actual_len, 1000);
 213
 214         if (ret)
 215                 dprintk(1, "usb_bulk_msg (send) failed, err %i\n", ret);
 216
 217         if (!recv_buf)
 218                 recv_buf = &dummy;
 219
 220         ret = usb_bulk_msg(cinergyt2->udev, usb_rcvbulkpipe(cinergyt2->udev, 1),
 221                            recv_buf, recv_buf_len, &actual_len, 1000);
 222
 223         if (ret)
 224                 dprintk(1, "usb_bulk_msg (read) failed, err %i\n", ret);
 225
 226         return ret ? ret : actual_len;
 227 }
 228
 229 static void cinergyt2_control_stream_transfer (struct cinergyt2 *cinergyt2, int enable)
 230 {
 231         char buf [] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
 232         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 233 }
 234
 235 static void cinergyt2_sleep (struct cinergyt2 *cinergyt2, int sleep)
 236 {
 237         char buf [] = { CINERGYT2_EP1_SLEEP_MODE, sleep ? 1 : 0 };
 238         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 239         cinergyt2->sleeping = sleep;
 240 }
 241
 242 static void cinergyt2_stream_irq (struct urb *urb, struct pt_regs *regs);
 243
 244 static int cinergyt2_submit_stream_urb (struct cinergyt2 *cinergyt2, struct urb *urb)
 245 {
 246         int err;
 247
 248         usb_fill_bulk_urb(urb,
 249                           cinergyt2->udev,
 250                           usb_rcvbulkpipe(cinergyt2->udev, 0x2),
 251                           urb->transfer_buffer,
 252                           STREAM_BUF_SIZE,
 253                           cinergyt2_stream_irq,
 254                           cinergyt2);
 255
 256         if ((err = usb_submit_urb(urb, GFP_ATOMIC)))
 257                 dprintk(1, "urb submission failed (err = %i)!\n", err);
 258
 259         return err;
 260 }
 261
 262 static void cinergyt2_stream_irq (struct urb *urb, struct pt_regs *regs)
 263 {
 264         struct cinergyt2 *cinergyt2 = urb->context;
 265
 266         if (urb->actual_length > 0)
 267                 dvb_dmx_swfilter(&cinergyt2->demux,
 268                                  urb->transfer_buffer, urb->actual_length);
 269
 270         if (cinergyt2->streaming)
 271                 cinergyt2_submit_stream_urb(cinergyt2, urb);
 272 }
 273
 274 static void cinergyt2_free_stream_urbs (struct cinergyt2 *cinergyt2)
 275 {
 276         int i;
 277
 278         for (i=0; i<STREAM_URB_COUNT; i++)
 279                 if (cinergyt2->stream_urb[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                                               SLAB_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                 if (cinergyt2->stream_urb[i])
 325                         usb_kill_urb(cinergyt2->stream_urb[i]);
 326 }
 327
 328 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
 329 {
 330         int i, err;
 331
 332         for (i=0; i<STREAM_URB_COUNT; i++) {
 333                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
 334                         cinergyt2_stop_stream_xfer(cinergyt2);
 335                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
 336                         return err;
 337                 }
 338         }
 339
 340         cinergyt2_control_stream_transfer(cinergyt2, 1);
 341         return 0;
 342 }
 343
 344 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 345 {
 346         struct dvb_demux *demux = dvbdmxfeed->demux;
 347         struct cinergyt2 *cinergyt2 = demux->priv;
 348
 349         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 350                 return -ERESTARTSYS;
 351
 352         if (cinergyt2->streaming == 0)
 353                 cinergyt2_start_stream_xfer(cinergyt2);
 354
 355         cinergyt2->streaming++;
 356         mutex_unlock(&cinergyt2->sem);
 357         return 0;
 358 }
 359
 360 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 361 {
 362         struct dvb_demux *demux = dvbdmxfeed->demux;
 363         struct cinergyt2 *cinergyt2 = demux->priv;
 364
 365         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 366                 return -ERESTARTSYS;
 367
 368         if (--cinergyt2->streaming == 0)
 369                 cinergyt2_stop_stream_xfer(cinergyt2);
 370
 371         mutex_unlock(&cinergyt2->sem);
 372         return 0;
 373 }
 374
 375 /**
 376  *  convert linux-dvb frontend parameter set into TPS.
 377  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
 378  *
 379  *  This function is probably reusable and may better get placed in a support
 380  *  library.
 381  *
 382  *  We replace errornous fields by default TPS fields (the ones with value 0).
 383  */
 384 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
 385 {
 386         struct dvb_ofdm_parameters *op = &p->u.ofdm;
 387         uint16_t tps = 0;
 388
 389         switch (op->code_rate_HP) {
 390                 case FEC_2_3:
 391                         tps |= (1 << 7);
 392                         break;
 393                 case FEC_3_4:
 394                         tps |= (2 << 7);
 395                         break;
 396                 case FEC_5_6:
 397                         tps |= (3 << 7);
 398                         break;
 399                 case FEC_7_8:
 400                         tps |= (4 << 7);
 401                         break;
 402                 case FEC_1_2:
 403                 case FEC_AUTO:
 404                 default:
 405                         /* tps |= (0 << 7) */;
 406         }
 407
 408         switch (op->code_rate_LP) {
 409                 case FEC_2_3:
 410                         tps |= (1 << 4);
 411                         break;
 412                 case FEC_3_4:
 413                         tps |= (2 << 4);
 414                         break;
 415                 case FEC_5_6:
 416                         tps |= (3 << 4);
 417                         break;
 418                 case FEC_7_8:
 419                         tps |= (4 << 4);
 420                         break;
 421                 case FEC_1_2:
 422                 case FEC_AUTO:
 423                 default:
 424                         /* tps |= (0 << 4) */;
 425         }
 426
 427         switch (op->constellation) {
 428                 case QAM_16:
 429                         tps |= (1 << 13);
 430                         break;
 431                 case QAM_64:
 432                         tps |= (2 << 13);
 433                         break;
 434                 case QPSK:
 435                 default:
 436                         /* tps |= (0 << 13) */;
 437         }
 438
 439         switch (op->transmission_mode) {
 440                 case TRANSMISSION_MODE_8K:
 441                         tps |= (1 << 0);
 442                         break;
 443                 case TRANSMISSION_MODE_2K:
 444                 default:
 445                         /* tps |= (0 << 0) */;
 446         }
 447
 448         switch (op->guard_interval) {
 449                 case GUARD_INTERVAL_1_16:
 450                         tps |= (1 << 2);
 451                         break;
 452                 case GUARD_INTERVAL_1_8:
 453                         tps |= (2 << 2);
 454                         break;
 455                 case GUARD_INTERVAL_1_4:
 456                         tps |= (3 << 2);
 457                         break;
 458                 case GUARD_INTERVAL_1_32:
 459                 default:
 460                         /* tps |= (0 << 2) */;
 461         }
 462
 463         switch (op->hierarchy_information) {
 464                 case HIERARCHY_1:
 465                         tps |= (1 << 10);
 466                         break;
 467                 case HIERARCHY_2:
 468                         tps |= (2 << 10);
 469                         break;
 470                 case HIERARCHY_4:
 471                         tps |= (3 << 10);
 472                         break;
 473                 case HIERARCHY_NONE:
 474                 default:
 475                         /* tps |= (0 << 10) */;
 476         }
 477
 478         return tps;
 479 }
 480
 481 static int cinergyt2_open (struct inode *inode, struct file *file)
 482 {
 483         struct dvb_device *dvbdev = file->private_data;
 484         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 485         int err = -ERESTARTSYS;
 486
 487         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 488                 return -ERESTARTSYS;
 489
 490         if ((err = dvb_generic_open(inode, file))) {
 491                 mutex_unlock(&cinergyt2->sem);
 492                 return err;
 493         }
 494
 495
 496         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 497                 cinergyt2_sleep(cinergyt2, 0);
 498                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 499         }
 500
 501         atomic_inc(&cinergyt2->inuse);
 502
 503         mutex_unlock(&cinergyt2->sem);
 504         return 0;
 505 }
 506
 507 static void cinergyt2_unregister(struct cinergyt2 *cinergyt2)
 508 {
 509         dvb_net_release(&cinergyt2->dvbnet);
 510         dvb_dmxdev_release(&cinergyt2->dmxdev);
 511         dvb_dmx_release(&cinergyt2->demux);
 512         dvb_unregister_device(cinergyt2->fedev);
 513         dvb_unregister_adapter(&cinergyt2->adapter);
 514
 515         cinergyt2_free_stream_urbs(cinergyt2);
 516         kfree(cinergyt2);
 517 }
 518
 519 static int cinergyt2_release (struct inode *inode, struct file *file)
 520 {
 521         struct dvb_device *dvbdev = file->private_data;
 522         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 523
 524         if (mutex_lock_interruptible(&cinergyt2->sem))
 525                 return -ERESTARTSYS;
 526
 527         if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
 528                 cancel_delayed_work(&cinergyt2->query_work);
 529                 flush_scheduled_work();
 530                 cinergyt2_sleep(cinergyt2, 1);
 531         }
 532
 533         mutex_unlock(&cinergyt2->sem);
 534
 535         if (atomic_dec_and_test(&cinergyt2->inuse) && cinergyt2->disconnect_pending) {
 536                 warn("delayed unregister in release");
 537                 cinergyt2_unregister(cinergyt2);
 538         }
 539
 540         return dvb_generic_release(inode, file);
 541 }
 542
 543 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
 544 {
 545         struct dvb_device *dvbdev = file->private_data;
 546         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 547        unsigned int mask = 0;
 548
 549         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 550                 return -ERESTARTSYS;
 551
 552         poll_wait(file, &cinergyt2->poll_wq, wait);
 553
 554        if (cinergyt2->pending_fe_events != 0)
 555                 mask |= (POLLIN | POLLRDNORM | POLLPRI);
 556
 557         mutex_unlock(&cinergyt2->sem);
 558
 559        return mask;
 560 }
 561
 562
 563 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
 564                      unsigned cmd, unsigned long arg)
 565 {
 566         struct dvb_device *dvbdev = file->private_data;
 567         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 568         struct dvbt_get_status_msg *stat = &cinergyt2->status;
 569         fe_status_t status = 0;
 570
 571         switch (cmd) {
 572         case FE_GET_INFO:
 573                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
 574                                     sizeof(struct dvb_frontend_info));
 575
 576         case FE_READ_STATUS:
 577                 if (0xffff - le16_to_cpu(stat->gain) > 30)
 578                         status |= FE_HAS_SIGNAL;
 579                 if (stat->lock_bits & (1 << 6))
 580                         status |= FE_HAS_LOCK;
 581                 if (stat->lock_bits & (1 << 5))
 582                         status |= FE_HAS_SYNC;
 583                 if (stat->lock_bits & (1 << 4))
 584                         status |= FE_HAS_CARRIER;
 585                 if (stat->lock_bits & (1 << 1))
 586                         status |= FE_HAS_VITERBI;
 587
 588                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
 589
 590         case FE_READ_BER:
 591                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
 592                                 (__u32 __user *) arg);
 593
 594         case FE_READ_SIGNAL_STRENGTH:
 595                 return put_user(0xffff - le16_to_cpu(stat->gain),
 596                                 (__u16 __user *) arg);
 597
 598         case FE_READ_SNR:
 599                 return put_user((stat->snr << 8) | stat->snr,
 600                                 (__u16 __user *) arg);
 601
 602         case FE_READ_UNCORRECTED_BLOCKS:
 603         {
 604                 uint32_t unc_count;
 605
 606                 unc_count = stat->uncorrected_block_count;
 607                 stat->uncorrected_block_count = 0;
 608
 609                 /* UNC are already converted to host byte order... */
 610                 return put_user(unc_count,(__u32 __user *) arg);
 611         }
 612         case FE_SET_FRONTEND:
 613         {
 614                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 615                 struct dvb_frontend_parameters p;
 616                 int err;
 617
 618                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
 619                         return -EPERM;
 620
 621                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
 622                         return -EFAULT;
 623
 624                 if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 625                         return -ERESTARTSYS;
 626
 627                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 628                 param->tps = cpu_to_le16(compute_tps(&p));
 629                 param->freq = cpu_to_le32(p.frequency / 1000);
 630                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
 631
 632                 stat->lock_bits = 0;
 633                 cinergyt2->pending_fe_events++;
 634                 wake_up_interruptible(&cinergyt2->poll_wq);
 635
 636                 err = cinergyt2_command(cinergyt2,
 637                                         (char *) param, sizeof(*param),
 638                                         NULL, 0);
 639
 640                 mutex_unlock(&cinergyt2->sem);
 641
 642                 return (err < 0) ? err : 0;
 643         }
 644
 645         case FE_GET_FRONTEND:
 646                 /**
 647                  *  trivial to implement (see struct dvbt_get_status_msg).
 648                  *  equivalent to FE_READ ioctls, but needs
 649                  *  TPS -> linux-dvb parameter set conversion. Feel free
 650                  *  to implement this and send us a patch if you need this
 651                  *  functionality.
 652                  */
 653                 break;
 654
 655         case FE_GET_EVENT:
 656         {
 657                 /**
 658                  *  for now we only fill the status field. the parameters
 659                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
 660                  */
 661                 struct dvb_frontend_event __user *e = (void __user *) arg;
 662                 if (cinergyt2->pending_fe_events == 0) {
 663                         if (file->f_flags & O_NONBLOCK)
 664                                 return -EWOULDBLOCK;
 665                         wait_event_interruptible(cinergyt2->poll_wq,
 666                                                  cinergyt2->pending_fe_events > 0);
 667                 }
 668                 cinergyt2->pending_fe_events = 0;
 669                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
 670                                         (unsigned long) &e->status);
 671         }
 672
 673         default:
 674                 ;
 675         }
 676
 677         return -EINVAL;
 678 }
 679
 680 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
 681 {
 682         struct dvb_device *dvbdev = file->private_data;
 683         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 684         int ret = 0;
 685
 686         lock_kernel();
 687
 688         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
 689                 ret = -EPERM;
 690                 goto bailout;
 691         }
 692
 693         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
 694                 ret = -EINVAL;
 695                 goto bailout;
 696         }
 697
 698         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 699         vma->vm_file = file;
 700
 701         ret = remap_pfn_range(vma, vma->vm_start,
 702                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
 703                               vma->vm_end - vma->vm_start,
 704                               vma->vm_page_prot) ? -EAGAIN : 0;
 705 bailout:
 706         unlock_kernel();
 707         return ret;
 708 }
 709
 710 static struct file_operations cinergyt2_fops = {
 711         .owner          = THIS_MODULE,
 712         .ioctl          = cinergyt2_ioctl,
 713         .poll           = cinergyt2_poll,
 714         .open           = cinergyt2_open,
 715         .release        = cinergyt2_release,
 716         .mmap           = cinergyt2_mmap
 717 };
 718
 719 static struct dvb_device cinergyt2_fe_template = {
 720         .users = ~0,
 721         .writers = 1,
 722         .readers = (~0)-1,
 723         .fops = &cinergyt2_fops
 724 };
 725
 726 #ifdef ENABLE_RC
 727
 728 static void cinergyt2_query_rc (void *data)
 729 {
 730         struct cinergyt2 *cinergyt2 = data;
 731         char buf[1] = { CINERGYT2_EP1_GET_RC_EVENTS };
 732         struct cinergyt2_rc_event rc_events[12];
 733         int n, len, i;
 734
 735         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 736                 return;
 737
 738         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
 739                                 (char *) rc_events, sizeof(rc_events));
 740         if (len < 0)
 741                 goto out;
 742         if (len == 0) {
 743                 if (time_after(jiffies, cinergyt2->last_event_jiffies +
 744                                msecs_to_jiffies(150))) {
 745                         /* stop key repeat */
 746                         if (cinergyt2->rc_input_event != KEY_MAX) {
 747                                 dprintk(1, "rc_input_event=%d Up\n", cinergyt2->rc_input_event);
 748                                 input_report_key(cinergyt2->rc_input_dev,
 749                                                  cinergyt2->rc_input_event, 0);
 750                                 cinergyt2->rc_input_event = KEY_MAX;
 751                         }
 752                         cinergyt2->rc_last_code = ~0;
 753                 }
 754                 goto out;
 755         }
 756         cinergyt2->last_event_jiffies = jiffies;
 757
 758         for (n = 0; n < (len / sizeof(rc_events[0])); n++) {
 759                 dprintk(1, "rc_events[%d].value = %x, type=%x\n",
 760                         n, le32_to_cpu(rc_events[n].value), rc_events[n].type);
 761
 762                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
 763                     rc_events[n].value == ~0) {
 764                         /* keyrepeat bit -> just repeat last rc_input_event */
 765                 } else {
 766                         cinergyt2->rc_input_event = KEY_MAX;
 767                         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3) {
 768                                 if (rc_keys[i + 0] == rc_events[n].type &&
 769                                     rc_keys[i + 1] == le32_to_cpu(rc_events[n].value)) {
 770                                         cinergyt2->rc_input_event = rc_keys[i + 2];
 771                                         break;
 772                                 }
 773                         }
 774                 }
 775
 776                 if (cinergyt2->rc_input_event != KEY_MAX) {
 777                         if (rc_events[n].value == cinergyt2->rc_last_code &&
 778                             cinergyt2->rc_last_code != ~0) {
 779                                 /* emit a key-up so the double event is recognized */
 780                                 dprintk(1, "rc_input_event=%d UP\n", cinergyt2->rc_input_event);
 781                                 input_report_key(cinergyt2->rc_input_dev,
 782                                                  cinergyt2->rc_input_event, 0);
 783                         }
 784                         dprintk(1, "rc_input_event=%d\n", cinergyt2->rc_input_event);
 785                         input_report_key(cinergyt2->rc_input_dev,
 786                                          cinergyt2->rc_input_event, 1);
 787                         cinergyt2->rc_last_code = rc_events[n].value;
 788                 }
 789         }
 790
 791 out:
 792         schedule_delayed_work(&cinergyt2->rc_query_work,
 793                               msecs_to_jiffies(RC_QUERY_INTERVAL));
 794
 795         mutex_unlock(&cinergyt2->sem);
 796 }
 797
 798 static int cinergyt2_register_rc(struct cinergyt2 *cinergyt2)
 799 {
 800         struct input_dev *input_dev;
 801         int i;
 802
 803         cinergyt2->rc_input_dev = input_dev = input_allocate_device();
 804         if (!input_dev)
 805                 return -ENOMEM;
 806
 807         usb_make_path(cinergyt2->udev, cinergyt2->phys, sizeof(cinergyt2->phys));
 808         strlcat(cinergyt2->phys, "/input0", sizeof(cinergyt2->phys));
 809         cinergyt2->rc_input_event = KEY_MAX;
 810         cinergyt2->rc_last_code = ~0;
 811         INIT_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc, cinergyt2);
 812
 813         input_dev->name = DRIVER_NAME " remote control";
 814         input_dev->phys = cinergyt2->phys;
 815         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
 816         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3)
 817                 set_bit(rc_keys[i + 2], input_dev->keybit);
 818         input_dev->keycodesize = 0;
 819         input_dev->keycodemax = 0;
 820
 821         input_register_device(cinergyt2->rc_input_dev);
 822         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 823
 824         return 0;
 825 }
 826
 827 static void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2)
 828 {
 829         cancel_delayed_work(&cinergyt2->rc_query_work);
 830         input_unregister_device(cinergyt2->rc_input_dev);
 831 }
 832
 833 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2)
 834 {
 835         cancel_delayed_work(&cinergyt2->rc_query_work);
 836 }
 837
 838 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2)
 839 {
 840         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 841 }
 842
 843 #else
 844
 845 static inline int cinergyt2_register_rc(struct cinergyt2 *cinergyt2) { return 0; }
 846 static inline void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2) { }
 847 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2) { }
 848 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2) { }
 849
 850 #endif /* ENABLE_RC */
 851
 852 static void cinergyt2_query (void *data)
 853 {
 854         struct cinergyt2 *cinergyt2 = (struct cinergyt2 *) data;
 855         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
 856         struct dvbt_get_status_msg *s = &cinergyt2->status;
 857         uint8_t lock_bits;
 858         uint32_t unc;
 859
 860         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 861                 return;
 862
 863         unc = s->uncorrected_block_count;
 864         lock_bits = s->lock_bits;
 865
 866         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
 867
 868         unc += le32_to_cpu(s->uncorrected_block_count);
 869         s->uncorrected_block_count = unc;
 870
 871         if (lock_bits != s->lock_bits) {
 872                 wake_up_interruptible(&cinergyt2->poll_wq);
 873                 cinergyt2->pending_fe_events++;
 874         }
 875
 876         schedule_delayed_work(&cinergyt2->query_work,
 877                               msecs_to_jiffies(QUERY_INTERVAL));
 878
 879         mutex_unlock(&cinergyt2->sem);
 880 }
 881
 882 static int cinergyt2_probe (struct usb_interface *intf,
 883                   const struct usb_device_id *id)
 884 {
 885         struct cinergyt2 *cinergyt2;
 886         int err;
 887
 888         if (!(cinergyt2 = kmalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
 889                 dprintk(1, "out of memory?!?\n");
 890                 return -ENOMEM;
 891         }
 892
 893         memset (cinergyt2, 0, sizeof (struct cinergyt2));
 894         usb_set_intfdata (intf, (void *) cinergyt2);
 895
 896         mutex_init(&cinergyt2->sem);
 897         init_waitqueue_head (&cinergyt2->poll_wq);
 898         INIT_WORK(&cinergyt2->query_work, cinergyt2_query, cinergyt2);
 899
 900         cinergyt2->udev = interface_to_usbdev(intf);
 901         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 902
 903         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
 904                 dprintk(1, "unable to allocate stream urbs\n");
 905                 kfree(cinergyt2);
 906                 return -ENOMEM;
 907         }
 908
 909         if ((err = dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME, THIS_MODULE, &cinergyt2->udev->dev)) < 0) {
 910                 kfree(cinergyt2);
 911                 return err;
 912         }
 913
 914         cinergyt2->demux.priv = cinergyt2;
 915         cinergyt2->demux.filternum = 256;
 916         cinergyt2->demux.feednum = 256;
 917         cinergyt2->demux.start_feed = cinergyt2_start_feed;
 918         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
 919         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
 920                                             DMX_SECTION_FILTERING |
 921                                             DMX_MEMORY_BASED_FILTERING;
 922
 923         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
 924                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
 925                 goto bailout;
 926         }
 927
 928         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
 929         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
 930         cinergyt2->dmxdev.capabilities = 0;
 931
 932         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, &cinergyt2->adapter)) < 0) {
 933                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
 934                 goto bailout;
 935         }
 936
 937         if (dvb_net_init(&cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
 938                 dprintk(1, "dvb_net_init() failed!\n");
 939
 940         dvb_register_device(&cinergyt2->adapter, &cinergyt2->fedev,
 941                             &cinergyt2_fe_template, cinergyt2,
 942                             DVB_DEVICE_FRONTEND);
 943
 944         err = cinergyt2_register_rc(cinergyt2);
 945         if (err)
 946                 goto bailout;
 947
 948         return 0;
 949
 950 bailout:
 951         dvb_net_release(&cinergyt2->dvbnet);
 952         dvb_dmxdev_release(&cinergyt2->dmxdev);
 953         dvb_dmx_release(&cinergyt2->demux);
 954         dvb_unregister_adapter(&cinergyt2->adapter);
 955         cinergyt2_free_stream_urbs(cinergyt2);
 956         kfree(cinergyt2);
 957         return -ENOMEM;
 958 }
 959
 960 static void cinergyt2_disconnect (struct usb_interface *intf)
 961 {
 962         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 963
 964         flush_scheduled_work();
 965
 966         cinergyt2_unregister_rc(cinergyt2);
 967
 968         cancel_delayed_work(&cinergyt2->query_work);
 969         wake_up_interruptible(&cinergyt2->poll_wq);
 970
 971         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
 972         cinergyt2->disconnect_pending = 1;
 973
 974         if (!atomic_read(&cinergyt2->inuse))
 975                 cinergyt2_unregister(cinergyt2);
 976 }
 977
 978 static int cinergyt2_suspend (struct usb_interface *intf, pm_message_t state)
 979 {
 980         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 981
 982         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 983                 return -ERESTARTSYS;
 984
 985         if (state.event > PM_EVENT_ON) {
 986                 struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 987
 988                 cinergyt2_suspend_rc(cinergyt2);
 989                 cancel_delayed_work(&cinergyt2->query_work);
 990                 if (cinergyt2->streaming)
 991                         cinergyt2_stop_stream_xfer(cinergyt2);
 992                 flush_scheduled_work();
 993                 cinergyt2_sleep(cinergyt2, 1);
 994         }
 995
 996         mutex_unlock(&cinergyt2->sem);
 997         return 0;
 998 }
 999
1000 static int cinergyt2_resume (struct usb_interface *intf)
1001 {
1002         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1003         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
1004
1005         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
1006                 return -ERESTARTSYS;
1007
1008         if (!cinergyt2->sleeping) {
1009                 cinergyt2_sleep(cinergyt2, 0);
1010                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
1011                 if (cinergyt2->streaming)
1012                         cinergyt2_start_stream_xfer(cinergyt2);
1013                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
1014         }
1015
1016         cinergyt2_resume_rc(cinergyt2);
1017
1018         mutex_unlock(&cinergyt2->sem);
1019         return 0;
1020 }
1021
1022 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
1023         { USB_DEVICE(0x0ccd, 0x0038) },
1024         { 0 }
1025 };
1026
1027 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
1028
1029 static struct usb_driver cinergyt2_driver = {
1030         .name   = "cinergyT2",
1031         .probe  = cinergyt2_probe,
1032         .disconnect     = cinergyt2_disconnect,
1033         .suspend        = cinergyt2_suspend,
1034         .resume         = cinergyt2_resume,
1035         .id_table       = cinergyt2_table
1036 };
1037
1038 static int __init cinergyt2_init (void)
1039 {
1040         int err;
1041
1042         if ((err = usb_register(&cinergyt2_driver)) < 0)
1043                 dprintk(1, "usb_register() failed! (err %i)\n", err);
1044
1045         return err;
1046 }
1047
1048 static void __exit cinergyt2_exit (void)
1049 {
1050         usb_deregister(&cinergyt2_driver);
1051 }
1052
1053 module_init (cinergyt2_init);
1054 module_exit (cinergyt2_exit);
1055
1056 MODULE_LICENSE("GPL");
1057 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");