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/pci.h>
  30 #include <linux/input.h>
  31 #include <linux/dvb/frontend.h>
  32 #include <linux/mutex.h>
  33 #include <linux/mm.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 delayed_work 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 delayed_work 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);
 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)
 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                 usb_free_urb(cinergyt2->stream_urb[i]);
 280
 281         usb_buffer_free(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 282                             cinergyt2->streambuf, cinergyt2->streambuf_dmahandle);
 283 }
 284
 285 static int cinergyt2_alloc_stream_urbs (struct cinergyt2 *cinergyt2)
 286 {
 287         int i;
 288
 289         cinergyt2->streambuf = usb_buffer_alloc(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 290                                               GFP_KERNEL, &cinergyt2->streambuf_dmahandle);
 291         if (!cinergyt2->streambuf) {
 292                 dprintk(1, "failed to alloc consistent stream memory area, bailing out!\n");
 293                 return -ENOMEM;
 294         }
 295
 296         memset(cinergyt2->streambuf, 0, STREAM_URB_COUNT*STREAM_BUF_SIZE);
 297
 298         for (i=0; i<STREAM_URB_COUNT; i++) {
 299                 struct urb *urb;
 300
 301                 if (!(urb = usb_alloc_urb(0, GFP_ATOMIC))) {
 302                         dprintk(1, "failed to alloc consistent stream urbs, bailing out!\n");
 303                         cinergyt2_free_stream_urbs(cinergyt2);
 304                         return -ENOMEM;
 305                 }
 306
 307                 urb->transfer_buffer = cinergyt2->streambuf + i * STREAM_BUF_SIZE;
 308                 urb->transfer_buffer_length = STREAM_BUF_SIZE;
 309
 310                 cinergyt2->stream_urb[i] = urb;
 311         }
 312
 313         return 0;
 314 }
 315
 316 static void cinergyt2_stop_stream_xfer (struct cinergyt2 *cinergyt2)
 317 {
 318         int i;
 319
 320         cinergyt2_control_stream_transfer(cinergyt2, 0);
 321
 322         for (i=0; i<STREAM_URB_COUNT; i++)
 323                 usb_kill_urb(cinergyt2->stream_urb[i]);
 324 }
 325
 326 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
 327 {
 328         int i, err;
 329
 330         for (i=0; i<STREAM_URB_COUNT; i++) {
 331                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
 332                         cinergyt2_stop_stream_xfer(cinergyt2);
 333                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
 334                         return err;
 335                 }
 336         }
 337
 338         cinergyt2_control_stream_transfer(cinergyt2, 1);
 339         return 0;
 340 }
 341
 342 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 343 {
 344         struct dvb_demux *demux = dvbdmxfeed->demux;
 345         struct cinergyt2 *cinergyt2 = demux->priv;
 346
 347         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 348                 return -ERESTARTSYS;
 349
 350         if (cinergyt2->streaming == 0)
 351                 cinergyt2_start_stream_xfer(cinergyt2);
 352
 353         cinergyt2->streaming++;
 354         mutex_unlock(&cinergyt2->sem);
 355         return 0;
 356 }
 357
 358 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 359 {
 360         struct dvb_demux *demux = dvbdmxfeed->demux;
 361         struct cinergyt2 *cinergyt2 = demux->priv;
 362
 363         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 364                 return -ERESTARTSYS;
 365
 366         if (--cinergyt2->streaming == 0)
 367                 cinergyt2_stop_stream_xfer(cinergyt2);
 368
 369         mutex_unlock(&cinergyt2->sem);
 370         return 0;
 371 }
 372
 373 /**
 374  *  convert linux-dvb frontend parameter set into TPS.
 375  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
 376  *
 377  *  This function is probably reusable and may better get placed in a support
 378  *  library.
 379  *
 380  *  We replace errornous fields by default TPS fields (the ones with value 0).
 381  */
 382 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
 383 {
 384         struct dvb_ofdm_parameters *op = &p->u.ofdm;
 385         uint16_t tps = 0;
 386
 387         switch (op->code_rate_HP) {
 388                 case FEC_2_3:
 389                         tps |= (1 << 7);
 390                         break;
 391                 case FEC_3_4:
 392                         tps |= (2 << 7);
 393                         break;
 394                 case FEC_5_6:
 395                         tps |= (3 << 7);
 396                         break;
 397                 case FEC_7_8:
 398                         tps |= (4 << 7);
 399                         break;
 400                 case FEC_1_2:
 401                 case FEC_AUTO:
 402                 default:
 403                         /* tps |= (0 << 7) */;
 404         }
 405
 406         switch (op->code_rate_LP) {
 407                 case FEC_2_3:
 408                         tps |= (1 << 4);
 409                         break;
 410                 case FEC_3_4:
 411                         tps |= (2 << 4);
 412                         break;
 413                 case FEC_5_6:
 414                         tps |= (3 << 4);
 415                         break;
 416                 case FEC_7_8:
 417                         tps |= (4 << 4);
 418                         break;
 419                 case FEC_1_2:
 420                 case FEC_AUTO:
 421                 default:
 422                         /* tps |= (0 << 4) */;
 423         }
 424
 425         switch (op->constellation) {
 426                 case QAM_16:
 427                         tps |= (1 << 13);
 428                         break;
 429                 case QAM_64:
 430                         tps |= (2 << 13);
 431                         break;
 432                 case QPSK:
 433                 default:
 434                         /* tps |= (0 << 13) */;
 435         }
 436
 437         switch (op->transmission_mode) {
 438                 case TRANSMISSION_MODE_8K:
 439                         tps |= (1 << 0);
 440                         break;
 441                 case TRANSMISSION_MODE_2K:
 442                 default:
 443                         /* tps |= (0 << 0) */;
 444         }
 445
 446         switch (op->guard_interval) {
 447                 case GUARD_INTERVAL_1_16:
 448                         tps |= (1 << 2);
 449                         break;
 450                 case GUARD_INTERVAL_1_8:
 451                         tps |= (2 << 2);
 452                         break;
 453                 case GUARD_INTERVAL_1_4:
 454                         tps |= (3 << 2);
 455                         break;
 456                 case GUARD_INTERVAL_1_32:
 457                 default:
 458                         /* tps |= (0 << 2) */;
 459         }
 460
 461         switch (op->hierarchy_information) {
 462                 case HIERARCHY_1:
 463                         tps |= (1 << 10);
 464                         break;
 465                 case HIERARCHY_2:
 466                         tps |= (2 << 10);
 467                         break;
 468                 case HIERARCHY_4:
 469                         tps |= (3 << 10);
 470                         break;
 471                 case HIERARCHY_NONE:
 472                 default:
 473                         /* tps |= (0 << 10) */;
 474         }
 475
 476         return tps;
 477 }
 478
 479 static int cinergyt2_open (struct inode *inode, struct file *file)
 480 {
 481         struct dvb_device *dvbdev = file->private_data;
 482         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 483         int err = -ERESTARTSYS;
 484
 485         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 486                 return -ERESTARTSYS;
 487
 488         if ((err = dvb_generic_open(inode, file))) {
 489                 mutex_unlock(&cinergyt2->sem);
 490                 return err;
 491         }
 492
 493
 494         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 495                 cinergyt2_sleep(cinergyt2, 0);
 496                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 497         }
 498
 499         atomic_inc(&cinergyt2->inuse);
 500
 501         mutex_unlock(&cinergyt2->sem);
 502         return 0;
 503 }
 504
 505 static void cinergyt2_unregister(struct cinergyt2 *cinergyt2)
 506 {
 507         dvb_net_release(&cinergyt2->dvbnet);
 508         dvb_dmxdev_release(&cinergyt2->dmxdev);
 509         dvb_dmx_release(&cinergyt2->demux);
 510         dvb_unregister_device(cinergyt2->fedev);
 511         dvb_unregister_adapter(&cinergyt2->adapter);
 512
 513         cinergyt2_free_stream_urbs(cinergyt2);
 514         kfree(cinergyt2);
 515 }
 516
 517 static int cinergyt2_release (struct inode *inode, struct file *file)
 518 {
 519         struct dvb_device *dvbdev = file->private_data;
 520         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 521
 522         if (mutex_lock_interruptible(&cinergyt2->sem))
 523                 return -ERESTARTSYS;
 524
 525         if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
 526                 cancel_delayed_work(&cinergyt2->query_work);
 527                 flush_scheduled_work();
 528                 cinergyt2_sleep(cinergyt2, 1);
 529         }
 530
 531         mutex_unlock(&cinergyt2->sem);
 532
 533         if (atomic_dec_and_test(&cinergyt2->inuse) && cinergyt2->disconnect_pending) {
 534                 warn("delayed unregister in release");
 535                 cinergyt2_unregister(cinergyt2);
 536         }
 537
 538         return dvb_generic_release(inode, file);
 539 }
 540
 541 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
 542 {
 543         struct dvb_device *dvbdev = file->private_data;
 544         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 545        unsigned int mask = 0;
 546
 547         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 548                 return -ERESTARTSYS;
 549
 550         poll_wait(file, &cinergyt2->poll_wq, wait);
 551
 552        if (cinergyt2->pending_fe_events != 0)
 553                 mask |= (POLLIN | POLLRDNORM | POLLPRI);
 554
 555         mutex_unlock(&cinergyt2->sem);
 556
 557        return mask;
 558 }
 559
 560
 561 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
 562                      unsigned cmd, unsigned long arg)
 563 {
 564         struct dvb_device *dvbdev = file->private_data;
 565         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 566         struct dvbt_get_status_msg *stat = &cinergyt2->status;
 567         fe_status_t status = 0;
 568
 569         switch (cmd) {
 570         case FE_GET_INFO:
 571                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
 572                                     sizeof(struct dvb_frontend_info));
 573
 574         case FE_READ_STATUS:
 575                 if (0xffff - le16_to_cpu(stat->gain) > 30)
 576                         status |= FE_HAS_SIGNAL;
 577                 if (stat->lock_bits & (1 << 6))
 578                         status |= FE_HAS_LOCK;
 579                 if (stat->lock_bits & (1 << 5))
 580                         status |= FE_HAS_SYNC;
 581                 if (stat->lock_bits & (1 << 4))
 582                         status |= FE_HAS_CARRIER;
 583                 if (stat->lock_bits & (1 << 1))
 584                         status |= FE_HAS_VITERBI;
 585
 586                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
 587
 588         case FE_READ_BER:
 589                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
 590                                 (__u32 __user *) arg);
 591
 592         case FE_READ_SIGNAL_STRENGTH:
 593                 return put_user(0xffff - le16_to_cpu(stat->gain),
 594                                 (__u16 __user *) arg);
 595
 596         case FE_READ_SNR:
 597                 return put_user((stat->snr << 8) | stat->snr,
 598                                 (__u16 __user *) arg);
 599
 600         case FE_READ_UNCORRECTED_BLOCKS:
 601         {
 602                 uint32_t unc_count;
 603
 604                 unc_count = stat->uncorrected_block_count;
 605                 stat->uncorrected_block_count = 0;
 606
 607                 /* UNC are already converted to host byte order... */
 608                 return put_user(unc_count,(__u32 __user *) arg);
 609         }
 610         case FE_SET_FRONTEND:
 611         {
 612                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 613                 struct dvb_frontend_parameters p;
 614                 int err;
 615
 616                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
 617                         return -EPERM;
 618
 619                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
 620                         return -EFAULT;
 621
 622                 if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 623                         return -ERESTARTSYS;
 624
 625                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 626                 param->tps = cpu_to_le16(compute_tps(&p));
 627                 param->freq = cpu_to_le32(p.frequency / 1000);
 628                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
 629
 630                 stat->lock_bits = 0;
 631                 cinergyt2->pending_fe_events++;
 632                 wake_up_interruptible(&cinergyt2->poll_wq);
 633
 634                 err = cinergyt2_command(cinergyt2,
 635                                         (char *) param, sizeof(*param),
 636                                         NULL, 0);
 637
 638                 mutex_unlock(&cinergyt2->sem);
 639
 640                 return (err < 0) ? err : 0;
 641         }
 642
 643         case FE_GET_FRONTEND:
 644                 /**
 645                  *  trivial to implement (see struct dvbt_get_status_msg).
 646                  *  equivalent to FE_READ ioctls, but needs
 647                  *  TPS -> linux-dvb parameter set conversion. Feel free
 648                  *  to implement this and send us a patch if you need this
 649                  *  functionality.
 650                  */
 651                 break;
 652
 653         case FE_GET_EVENT:
 654         {
 655                 /**
 656                  *  for now we only fill the status field. the parameters
 657                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
 658                  */
 659                 struct dvb_frontend_event __user *e = (void __user *) arg;
 660                 if (cinergyt2->pending_fe_events == 0) {
 661                         if (file->f_flags & O_NONBLOCK)
 662                                 return -EWOULDBLOCK;
 663                         wait_event_interruptible(cinergyt2->poll_wq,
 664                                                  cinergyt2->pending_fe_events > 0);
 665                 }
 666                 cinergyt2->pending_fe_events = 0;
 667                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
 668                                         (unsigned long) &e->status);
 669         }
 670
 671         default:
 672                 ;
 673         }
 674
 675         return -EINVAL;
 676 }
 677
 678 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
 679 {
 680         struct dvb_device *dvbdev = file->private_data;
 681         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 682         int ret = 0;
 683
 684         lock_kernel();
 685
 686         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
 687                 ret = -EPERM;
 688                 goto bailout;
 689         }
 690
 691         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
 692                 ret = -EINVAL;
 693                 goto bailout;
 694         }
 695
 696         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 697         vma->vm_file = file;
 698
 699         ret = remap_pfn_range(vma, vma->vm_start,
 700                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
 701                               vma->vm_end - vma->vm_start,
 702                               vma->vm_page_prot) ? -EAGAIN : 0;
 703 bailout:
 704         unlock_kernel();
 705         return ret;
 706 }
 707
 708 static struct file_operations cinergyt2_fops = {
 709         .owner          = THIS_MODULE,
 710         .ioctl          = cinergyt2_ioctl,
 711         .poll           = cinergyt2_poll,
 712         .open           = cinergyt2_open,
 713         .release        = cinergyt2_release,
 714         .mmap           = cinergyt2_mmap
 715 };
 716
 717 static struct dvb_device cinergyt2_fe_template = {
 718         .users = ~0,
 719         .writers = 1,
 720         .readers = (~0)-1,
 721         .fops = &cinergyt2_fops
 722 };
 723
 724 #ifdef ENABLE_RC
 725
 726 static void cinergyt2_query_rc (struct work_struct *work)
 727 {
 728         struct cinergyt2 *cinergyt2 =
 729                 container_of(work, struct cinergyt2, rc_query_work.work);
 730         char buf[1] = { CINERGYT2_EP1_GET_RC_EVENTS };
 731         struct cinergyt2_rc_event rc_events[12];
 732         int n, len, i;
 733
 734         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
 735                 return;
 736
 737         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
 738                                 (char *) rc_events, sizeof(rc_events));
 739         if (len < 0)
 740                 goto out;
 741         if (len == 0) {
 742                 if (time_after(jiffies, cinergyt2->last_event_jiffies +
 743                                msecs_to_jiffies(150))) {
 744                         /* stop key repeat */
 745                         if (cinergyt2->rc_input_event != KEY_MAX) {
 746                                 dprintk(1, "rc_input_event=%d Up\n", cinergyt2->rc_input_event);
 747                                 input_report_key(cinergyt2->rc_input_dev,
 748                                                  cinergyt2->rc_input_event, 0);
 749                                 cinergyt2->rc_input_event = KEY_MAX;
 750                         }
 751                         cinergyt2->rc_last_code = ~0;
 752                 }
 753                 goto out;
 754         }
 755         cinergyt2->last_event_jiffies = jiffies;
 756
 757         for (n = 0; n < (len / sizeof(rc_events[0])); n++) {
 758                 dprintk(1, "rc_events[%d].value = %x, type=%x\n",
 759                         n, le32_to_cpu(rc_events[n].value), rc_events[n].type);
 760
 761                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
 762                     rc_events[n].value == ~0) {
 763                         /* keyrepeat bit -> just repeat last rc_input_event */
 764                 } else {
 765                         cinergyt2->rc_input_event = KEY_MAX;
 766                         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3) {
 767                                 if (rc_keys[i + 0] == rc_events[n].type &&
 768                                     rc_keys[i + 1] == le32_to_cpu(rc_events[n].value)) {
 769                                         cinergyt2->rc_input_event = rc_keys[i + 2];
 770                                         break;
 771                                 }
 772                         }
 773                 }
 774
 775                 if (cinergyt2->rc_input_event != KEY_MAX) {
 776                         if (rc_events[n].value == cinergyt2->rc_last_code &&
 777                             cinergyt2->rc_last_code != ~0) {
 778                                 /* emit a key-up so the double event is recognized */
 779                                 dprintk(1, "rc_input_event=%d UP\n", cinergyt2->rc_input_event);
 780                                 input_report_key(cinergyt2->rc_input_dev,
 781                                                  cinergyt2->rc_input_event, 0);
 782                         }
 783                         dprintk(1, "rc_input_event=%d\n", cinergyt2->rc_input_event);
 784                         input_report_key(cinergyt2->rc_input_dev,
 785                                          cinergyt2->rc_input_event, 1);
 786                         cinergyt2->rc_last_code = rc_events[n].value;
 787                 }
 788         }
 789
 790 out:
 791         schedule_delayed_work(&cinergyt2->rc_query_work,
 792                               msecs_to_jiffies(RC_QUERY_INTERVAL));
 793
 794         mutex_unlock(&cinergyt2->sem);
 795 }
 796
 797 static int cinergyt2_register_rc(struct cinergyt2 *cinergyt2)
 798 {
 799         struct input_dev *input_dev;
 800         int i;
 801
 802         cinergyt2->rc_input_dev = input_dev = input_allocate_device();
 803         if (!input_dev)
 804                 return -ENOMEM;
 805
 806         usb_make_path(cinergyt2->udev, cinergyt2->phys, sizeof(cinergyt2->phys));
 807         strlcat(cinergyt2->phys, "/input0", sizeof(cinergyt2->phys));
 808         cinergyt2->rc_input_event = KEY_MAX;
 809         cinergyt2->rc_last_code = ~0;
 810         INIT_DELAYED_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc);
 811
 812         input_dev->name = DRIVER_NAME " remote control";
 813         input_dev->phys = cinergyt2->phys;
 814         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
 815         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3)
 816                 set_bit(rc_keys[i + 2], input_dev->keybit);
 817         input_dev->keycodesize = 0;
 818         input_dev->keycodemax = 0;
 819
 820         input_register_device(cinergyt2->rc_input_dev);
 821         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 822
 823         return 0;
 824 }
 825
 826 static void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2)
 827 {
 828         cancel_delayed_work(&cinergyt2->rc_query_work);
 829         input_unregister_device(cinergyt2->rc_input_dev);
 830 }
 831
 832 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2)
 833 {
 834         cancel_delayed_work(&cinergyt2->rc_query_work);
 835 }
 836
 837 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2)
 838 {
 839         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 840 }
 841
 842 #else
 843
 844 static inline int cinergyt2_register_rc(struct cinergyt2 *cinergyt2) { return 0; }
 845 static inline void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2) { }
 846 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2) { }
 847 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2) { }
 848
 849 #endif /* ENABLE_RC */
 850
 851 static void cinergyt2_query (struct work_struct *work)
 852 {
 853         struct cinergyt2 *cinergyt2 =
 854                 container_of(work, struct cinergyt2, query_work.work);
 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_DELAYED_WORK(&cinergyt2->query_work, cinergyt2_query);
 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 (1) {
 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");