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