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
  34 #include "dmxdev.h"
  35 #include "dvb_demux.h"
  36 #include "dvb_net.h"
  37
  38 #ifdef CONFIG_DVB_CINERGYT2_TUNING
  39         #define STREAM_URB_COUNT (CONFIG_DVB_CINERGYT2_STREAM_URB_COUNT)
  40         #define STREAM_BUF_SIZE (CONFIG_DVB_CINERGYT2_STREAM_BUF_SIZE)
  41         #define QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_QUERY_INTERVAL)
  42         #ifdef CONFIG_DVB_CINERGYT2_ENABLE_RC_INPUT_DEVICE
  43                 #define RC_QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_RC_QUERY_INTERVAL)
  44                 #define ENABLE_RC (1)
  45         #endif
  46 #else
  47         #define STREAM_URB_COUNT (32)
  48         #define STREAM_BUF_SIZE (512)   /* bytes */
  49         #define ENABLE_RC (1)
  50         #define RC_QUERY_INTERVAL (50)  /* milliseconds */
  51         #define QUERY_INTERVAL (333)    /* milliseconds */
  52 #endif
  53
  54 #define DRIVER_NAME "TerraTec/qanu USB2.0 Highspeed DVB-T Receiver"
  55
  56 static int debug;
  57 module_param_named(debug, debug, int, 0644);
  58 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
  59
  60 #define dprintk(level, args...)                                         \
  61 do {                                                                    \
  62         if ((debug & level)) {                                          \
  63                 printk("%s: %s(): ", KBUILD_MODNAME,                    \
  64                        __FUNCTION__);                                   \
  65                 printk(args); }                                         \
  66 } while (0)
  67
  68 enum cinergyt2_ep1_cmd {
  69         CINERGYT2_EP1_PID_TABLE_RESET           = 0x01,
  70         CINERGYT2_EP1_PID_SETUP                 = 0x02,
  71         CINERGYT2_EP1_CONTROL_STREAM_TRANSFER   = 0x03,
  72         CINERGYT2_EP1_SET_TUNER_PARAMETERS      = 0x04,
  73         CINERGYT2_EP1_GET_TUNER_STATUS          = 0x05,
  74         CINERGYT2_EP1_START_SCAN                = 0x06,
  75         CINERGYT2_EP1_CONTINUE_SCAN             = 0x07,
  76         CINERGYT2_EP1_GET_RC_EVENTS             = 0x08,
  77         CINERGYT2_EP1_SLEEP_MODE                = 0x09
  78 };
  79
  80 struct dvbt_set_parameters_msg {
  81         uint8_t cmd;
  82         uint32_t freq;
  83         uint8_t bandwidth;
  84         uint16_t tps;
  85         uint8_t flags;
  86 } __attribute__((packed));
  87
  88 struct dvbt_get_status_msg {
  89         uint32_t freq;
  90         uint8_t bandwidth;
  91         uint16_t tps;
  92         uint8_t flags;
  93         uint16_t gain;
  94         uint8_t snr;
  95         uint32_t viterbi_error_rate;
  96         uint32_t rs_error_rate;
  97         uint32_t uncorrected_block_count;
  98         uint8_t lock_bits;
  99         uint8_t prev_lock_bits;
 100 } __attribute__((packed));
 101
 102 static struct dvb_frontend_info cinergyt2_fe_info = {
 103         .name = DRIVER_NAME,
 104         .type = FE_OFDM,
 105         .frequency_min = 174000000,
 106         .frequency_max = 862000000,
 107         .frequency_stepsize = 166667,
 108         .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
 109                 FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
 110                 FE_CAN_FEC_AUTO |
 111                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 112                 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
 113                 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS
 114 };
 115
 116 struct cinergyt2 {
 117         struct dvb_demux demux;
 118         struct usb_device *udev;
 119         struct semaphore sem;
 120         struct dvb_adapter adapter;
 121         struct dvb_device *fedev;
 122         struct dmxdev dmxdev;
 123         struct dvb_net dvbnet;
 124
 125         int streaming;
 126         int sleeping;
 127
 128         struct dvbt_set_parameters_msg param;
 129         struct dvbt_get_status_msg status;
 130         struct work_struct query_work;
 131
 132         wait_queue_head_t poll_wq;
 133         int pending_fe_events;
 134         int disconnect_pending;
 135         atomic_t inuse;
 136
 137         void *streambuf;
 138         dma_addr_t streambuf_dmahandle;
 139         struct urb *stream_urb [STREAM_URB_COUNT];
 140
 141 #ifdef ENABLE_RC
 142         struct input_dev *rc_input_dev;
 143         char phys[64];
 144         struct work_struct rc_query_work;
 145         int rc_input_event;
 146         u32 rc_last_code;
 147         unsigned long last_event_jiffies;
 148 #endif
 149 };
 150
 151 enum {
 152         CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
 153         CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
 154         CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
 155 };
 156
 157 struct cinergyt2_rc_event {
 158         char type;
 159         uint32_t value;
 160 } __attribute__((packed));
 161
 162 static const uint32_t rc_keys[] = {
 163         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfe01eb04,     KEY_POWER,
 164         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfd02eb04,     KEY_1,
 165         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfc03eb04,     KEY_2,
 166         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfb04eb04,     KEY_3,
 167         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfa05eb04,     KEY_4,
 168         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf906eb04,     KEY_5,
 169         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf807eb04,     KEY_6,
 170         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf708eb04,     KEY_7,
 171         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf609eb04,     KEY_8,
 172         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf50aeb04,     KEY_9,
 173         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf30ceb04,     KEY_0,
 174         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf40beb04,     KEY_VIDEO,
 175         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf20deb04,     KEY_REFRESH,
 176         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf10eeb04,     KEY_SELECT,
 177         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf00feb04,     KEY_EPG,
 178         CINERGYT2_RC_EVENT_TYPE_NEC,    0xef10eb04,     KEY_UP,
 179         CINERGYT2_RC_EVENT_TYPE_NEC,    0xeb14eb04,     KEY_DOWN,
 180         CINERGYT2_RC_EVENT_TYPE_NEC,    0xee11eb04,     KEY_LEFT,
 181         CINERGYT2_RC_EVENT_TYPE_NEC,    0xec13eb04,     KEY_RIGHT,
 182         CINERGYT2_RC_EVENT_TYPE_NEC,    0xed12eb04,     KEY_OK,
 183         CINERGYT2_RC_EVENT_TYPE_NEC,    0xea15eb04,     KEY_TEXT,
 184         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe916eb04,     KEY_INFO,
 185         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe817eb04,     KEY_RED,
 186         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe718eb04,     KEY_GREEN,
 187         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe619eb04,     KEY_YELLOW,
 188         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe51aeb04,     KEY_BLUE,
 189         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe31ceb04,     KEY_VOLUMEUP,
 190         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe11eeb04,     KEY_VOLUMEDOWN,
 191         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe21deb04,     KEY_MUTE,
 192         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe41beb04,     KEY_CHANNELUP,
 193         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe01feb04,     KEY_CHANNELDOWN,
 194         CINERGYT2_RC_EVENT_TYPE_NEC,    0xbf40eb04,     KEY_PAUSE,
 195         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb34ceb04,     KEY_PLAY,
 196         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa758eb04,     KEY_RECORD,
 197         CINERGYT2_RC_EVENT_TYPE_NEC,    0xab54eb04,     KEY_PREVIOUS,
 198         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb748eb04,     KEY_STOP,
 199         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa35ceb04,     KEY_NEXT
 200 };
 201
 202 static int cinergyt2_command (struct cinergyt2 *cinergyt2,
 203                               char *send_buf, int send_buf_len,
 204                               char *recv_buf, int recv_buf_len)
 205 {
 206         int actual_len;
 207         char dummy;
 208         int ret;
 209
 210         ret = usb_bulk_msg(cinergyt2->udev, usb_sndbulkpipe(cinergyt2->udev, 1),
 211                            send_buf, send_buf_len, &actual_len, 1000);
 212
 213         if (ret)
 214                 dprintk(1, "usb_bulk_msg (send) failed, err %i\n", ret);
 215
 216         if (!recv_buf)
 217                 recv_buf = &dummy;
 218
 219         ret = usb_bulk_msg(cinergyt2->udev, usb_rcvbulkpipe(cinergyt2->udev, 1),
 220                            recv_buf, recv_buf_len, &actual_len, 1000);
 221
 222         if (ret)
 223                 dprintk(1, "usb_bulk_msg (read) failed, err %i\n", ret);
 224
 225         return ret ? ret : actual_len;
 226 }
 227
 228 static void cinergyt2_control_stream_transfer (struct cinergyt2 *cinergyt2, int enable)
 229 {
 230         char buf [] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
 231         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 232 }
 233
 234 static void cinergyt2_sleep (struct cinergyt2 *cinergyt2, int sleep)
 235 {
 236         char buf [] = { CINERGYT2_EP1_SLEEP_MODE, sleep ? 1 : 0 };
 237         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 238         cinergyt2->sleeping = sleep;
 239 }
 240
 241 static void cinergyt2_stream_irq (struct urb *urb, struct pt_regs *regs);
 242
 243 static int cinergyt2_submit_stream_urb (struct cinergyt2 *cinergyt2, struct urb *urb)
 244 {
 245         int err;
 246
 247         usb_fill_bulk_urb(urb,
 248                           cinergyt2->udev,
 249                           usb_rcvbulkpipe(cinergyt2->udev, 0x2),
 250                           urb->transfer_buffer,
 251                           STREAM_BUF_SIZE,
 252                           cinergyt2_stream_irq,
 253                           cinergyt2);
 254
 255         if ((err = usb_submit_urb(urb, GFP_ATOMIC)))
 256                 dprintk(1, "urb submission failed (err = %i)!\n", err);
 257
 258         return err;
 259 }
 260
 261 static void cinergyt2_stream_irq (struct urb *urb, struct pt_regs *regs)
 262 {
 263         struct cinergyt2 *cinergyt2 = urb->context;
 264
 265         if (urb->actual_length > 0)
 266                 dvb_dmx_swfilter(&cinergyt2->demux,
 267                                  urb->transfer_buffer, urb->actual_length);
 268
 269         if (cinergyt2->streaming)
 270                 cinergyt2_submit_stream_urb(cinergyt2, urb);
 271 }
 272
 273 static void cinergyt2_free_stream_urbs (struct cinergyt2 *cinergyt2)
 274 {
 275         int i;
 276
 277         for (i=0; i<STREAM_URB_COUNT; i++)
 278                 if (cinergyt2->stream_urb[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                                               SLAB_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                 if (cinergyt2->stream_urb[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 || down_interruptible(&cinergyt2->sem))
 349                 return -ERESTARTSYS;
 350
 351         if (cinergyt2->streaming == 0)
 352                 cinergyt2_start_stream_xfer(cinergyt2);
 353
 354         cinergyt2->streaming++;
 355         up(&cinergyt2->sem);
 356         return 0;
 357 }
 358
 359 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 360 {
 361         struct dvb_demux *demux = dvbdmxfeed->demux;
 362         struct cinergyt2 *cinergyt2 = demux->priv;
 363
 364         if (cinergyt2->disconnect_pending || down_interruptible(&cinergyt2->sem))
 365                 return -ERESTARTSYS;
 366
 367         if (--cinergyt2->streaming == 0)
 368                 cinergyt2_stop_stream_xfer(cinergyt2);
 369
 370         up(&cinergyt2->sem);
 371         return 0;
 372 }
 373
 374 /**
 375  *  convert linux-dvb frontend parameter set into TPS.
 376  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
 377  *
 378  *  This function is probably reusable and may better get placed in a support
 379  *  library.
 380  *
 381  *  We replace errornous fields by default TPS fields (the ones with value 0).
 382  */
 383 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
 384 {
 385         struct dvb_ofdm_parameters *op = &p->u.ofdm;
 386         uint16_t tps = 0;
 387
 388         switch (op->code_rate_HP) {
 389                 case FEC_2_3:
 390                         tps |= (1 << 7);
 391                         break;
 392                 case FEC_3_4:
 393                         tps |= (2 << 7);
 394                         break;
 395                 case FEC_5_6:
 396                         tps |= (3 << 7);
 397                         break;
 398                 case FEC_7_8:
 399                         tps |= (4 << 7);
 400                         break;
 401                 case FEC_1_2:
 402                 case FEC_AUTO:
 403                 default:
 404                         /* tps |= (0 << 7) */;
 405         }
 406
 407         switch (op->code_rate_LP) {
 408                 case FEC_2_3:
 409                         tps |= (1 << 4);
 410                         break;
 411                 case FEC_3_4:
 412                         tps |= (2 << 4);
 413                         break;
 414                 case FEC_5_6:
 415                         tps |= (3 << 4);
 416                         break;
 417                 case FEC_7_8:
 418                         tps |= (4 << 4);
 419                         break;
 420                 case FEC_1_2:
 421                 case FEC_AUTO:
 422                 default:
 423                         /* tps |= (0 << 4) */;
 424         }
 425
 426         switch (op->constellation) {
 427                 case QAM_16:
 428                         tps |= (1 << 13);
 429                         break;
 430                 case QAM_64:
 431                         tps |= (2 << 13);
 432                         break;
 433                 case QPSK:
 434                 default:
 435                         /* tps |= (0 << 13) */;
 436         }
 437
 438         switch (op->transmission_mode) {
 439                 case TRANSMISSION_MODE_8K:
 440                         tps |= (1 << 0);
 441                         break;
 442                 case TRANSMISSION_MODE_2K:
 443                 default:
 444                         /* tps |= (0 << 0) */;
 445         }
 446
 447         switch (op->guard_interval) {
 448                 case GUARD_INTERVAL_1_16:
 449                         tps |= (1 << 2);
 450                         break;
 451                 case GUARD_INTERVAL_1_8:
 452                         tps |= (2 << 2);
 453                         break;
 454                 case GUARD_INTERVAL_1_4:
 455                         tps |= (3 << 2);
 456                         break;
 457                 case GUARD_INTERVAL_1_32:
 458                 default:
 459                         /* tps |= (0 << 2) */;
 460         }
 461
 462         switch (op->hierarchy_information) {
 463                 case HIERARCHY_1:
 464                         tps |= (1 << 10);
 465                         break;
 466                 case HIERARCHY_2:
 467                         tps |= (2 << 10);
 468                         break;
 469                 case HIERARCHY_4:
 470                         tps |= (3 << 10);
 471                         break;
 472                 case HIERARCHY_NONE:
 473                 default:
 474                         /* tps |= (0 << 10) */;
 475         }
 476
 477         return tps;
 478 }
 479
 480 static int cinergyt2_open (struct inode *inode, struct file *file)
 481 {
 482         struct dvb_device *dvbdev = file->private_data;
 483         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 484         int err = -ERESTARTSYS;
 485
 486         if (cinergyt2->disconnect_pending || down_interruptible(&cinergyt2->sem))
 487                 return -ERESTARTSYS;
 488
 489         if ((err = dvb_generic_open(inode, file))) {
 490                 up(&cinergyt2->sem);
 491                 return err;
 492         }
 493
 494
 495         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 496                 cinergyt2_sleep(cinergyt2, 0);
 497                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 498         }
 499
 500         atomic_inc(&cinergyt2->inuse);
 501
 502         up(&cinergyt2->sem);
 503         return 0;
 504 }
 505
 506 static void cinergyt2_unregister(struct cinergyt2 *cinergyt2)
 507 {
 508         dvb_unregister_device(cinergyt2->fedev);
 509         dvb_unregister_adapter(&cinergyt2->adapter);
 510
 511         cinergyt2_free_stream_urbs(cinergyt2);
 512         kfree(cinergyt2);
 513 }
 514
 515 static int cinergyt2_release (struct inode *inode, struct file *file)
 516 {
 517         struct dvb_device *dvbdev = file->private_data;
 518         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 519
 520         if (down_interruptible(&cinergyt2->sem))
 521                 return -ERESTARTSYS;
 522
 523         if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
 524                 cancel_delayed_work(&cinergyt2->query_work);
 525                 flush_scheduled_work();
 526                 cinergyt2_sleep(cinergyt2, 1);
 527         }
 528
 529         up(&cinergyt2->sem);
 530
 531         if (atomic_dec_and_test(&cinergyt2->inuse) && cinergyt2->disconnect_pending) {
 532                 warn("delayed unregister in release");
 533                 cinergyt2_unregister(cinergyt2);
 534         }
 535
 536         return dvb_generic_release(inode, file);
 537 }
 538
 539 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
 540 {
 541         struct dvb_device *dvbdev = file->private_data;
 542         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 543
 544         if (cinergyt2->disconnect_pending || down_interruptible(&cinergyt2->sem))
 545                 return -ERESTARTSYS;
 546
 547         poll_wait(file, &cinergyt2->poll_wq, wait);
 548
 549         up(&cinergyt2->sem);
 550
 551         return (POLLIN | POLLRDNORM | POLLPRI);
 552 }
 553
 554
 555 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
 556                      unsigned cmd, unsigned long arg)
 557 {
 558         struct dvb_device *dvbdev = file->private_data;
 559         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 560         struct dvbt_get_status_msg *stat = &cinergyt2->status;
 561         fe_status_t status = 0;
 562
 563         switch (cmd) {
 564         case FE_GET_INFO:
 565                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
 566                                     sizeof(struct dvb_frontend_info));
 567
 568         case FE_READ_STATUS:
 569                 if (0xffff - le16_to_cpu(stat->gain) > 30)
 570                         status |= FE_HAS_SIGNAL;
 571                 if (stat->lock_bits & (1 << 6))
 572                         status |= FE_HAS_LOCK;
 573                 if (stat->lock_bits & (1 << 5))
 574                         status |= FE_HAS_SYNC;
 575                 if (stat->lock_bits & (1 << 4))
 576                         status |= FE_HAS_CARRIER;
 577                 if (stat->lock_bits & (1 << 1))
 578                         status |= FE_HAS_VITERBI;
 579
 580                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
 581
 582         case FE_READ_BER:
 583                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
 584                                 (__u32 __user *) arg);
 585
 586         case FE_READ_SIGNAL_STRENGTH:
 587                 return put_user(0xffff - le16_to_cpu(stat->gain),
 588                                 (__u16 __user *) arg);
 589
 590         case FE_READ_SNR:
 591                 return put_user((stat->snr << 8) | stat->snr,
 592                                 (__u16 __user *) arg);
 593
 594         case FE_READ_UNCORRECTED_BLOCKS:
 595         {
 596                 uint32_t unc_count;
 597
 598                 unc_count = stat->uncorrected_block_count;
 599                 stat->uncorrected_block_count = 0;
 600
 601                 /* UNC are already converted to host byte order... */
 602                 return put_user(unc_count,(__u32 __user *) arg);
 603         }
 604         case FE_SET_FRONTEND:
 605         {
 606                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 607                 struct dvb_frontend_parameters p;
 608                 int err;
 609
 610                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
 611                         return -EPERM;
 612
 613                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
 614                         return -EFAULT;
 615
 616                 if (cinergyt2->disconnect_pending || down_interruptible(&cinergyt2->sem))
 617                         return -ERESTARTSYS;
 618
 619                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 620                 param->tps = cpu_to_le16(compute_tps(&p));
 621                 param->freq = cpu_to_le32(p.frequency / 1000);
 622                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
 623
 624                 stat->lock_bits = 0;
 625                 cinergyt2->pending_fe_events++;
 626                 wake_up_interruptible(&cinergyt2->poll_wq);
 627
 628                 err = cinergyt2_command(cinergyt2,
 629                                         (char *) param, sizeof(*param),
 630                                         NULL, 0);
 631
 632                 up(&cinergyt2->sem);
 633
 634                 return (err < 0) ? err : 0;
 635         }
 636
 637         case FE_GET_FRONTEND:
 638                 /**
 639                  *  trivial to implement (see struct dvbt_get_status_msg).
 640                  *  equivalent to FE_READ ioctls, but needs
 641                  *  TPS -> linux-dvb parameter set conversion. Feel free
 642                  *  to implement this and send us a patch if you need this
 643                  *  functionality.
 644                  */
 645                 break;
 646
 647         case FE_GET_EVENT:
 648         {
 649                 /**
 650                  *  for now we only fill the status field. the parameters
 651                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
 652                  */
 653                 struct dvb_frontend_event __user *e = (void __user *) arg;
 654                 if (cinergyt2->pending_fe_events == 0) {
 655                         if (file->f_flags & O_NONBLOCK)
 656                                 return -EWOULDBLOCK;
 657                         wait_event_interruptible(cinergyt2->poll_wq,
 658                                                  cinergyt2->pending_fe_events > 0);
 659                 }
 660                 cinergyt2->pending_fe_events = 0;
 661                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
 662                                         (unsigned long) &e->status);
 663         }
 664
 665         default:
 666                 ;
 667         }
 668
 669         return -EINVAL;
 670 }
 671
 672 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
 673 {
 674         struct dvb_device *dvbdev = file->private_data;
 675         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 676         int ret = 0;
 677
 678         lock_kernel();
 679
 680         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
 681                 ret = -EPERM;
 682                 goto bailout;
 683         }
 684
 685         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
 686                 ret = -EINVAL;
 687                 goto bailout;
 688         }
 689
 690         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 691         vma->vm_file = file;
 692
 693         ret = remap_pfn_range(vma, vma->vm_start,
 694                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
 695                               vma->vm_end - vma->vm_start,
 696                               vma->vm_page_prot) ? -EAGAIN : 0;
 697 bailout:
 698         unlock_kernel();
 699         return ret;
 700 }
 701
 702 static struct file_operations cinergyt2_fops = {
 703         .owner          = THIS_MODULE,
 704         .ioctl          = cinergyt2_ioctl,
 705         .poll           = cinergyt2_poll,
 706         .open           = cinergyt2_open,
 707         .release        = cinergyt2_release,
 708         .mmap           = cinergyt2_mmap
 709 };
 710
 711 static struct dvb_device cinergyt2_fe_template = {
 712         .users = ~0,
 713         .writers = 1,
 714         .readers = (~0)-1,
 715         .fops = &cinergyt2_fops
 716 };
 717
 718 #ifdef ENABLE_RC
 719
 720 static void cinergyt2_query_rc (void *data)
 721 {
 722         struct cinergyt2 *cinergyt2 = data;
 723         char buf[1] = { CINERGYT2_EP1_GET_RC_EVENTS };
 724         struct cinergyt2_rc_event rc_events[12];
 725         int n, len, i;
 726
 727         if (cinergyt2->disconnect_pending || down_interruptible(&cinergyt2->sem))
 728                 return;
 729
 730         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
 731                                 (char *) rc_events, sizeof(rc_events));
 732         if (len < 0)
 733                 goto out;
 734         if (len == 0) {
 735                 if (time_after(jiffies, cinergyt2->last_event_jiffies +
 736                                msecs_to_jiffies(150))) {
 737                         /* stop key repeat */
 738                         if (cinergyt2->rc_input_event != KEY_MAX) {
 739                                 dprintk(1, "rc_input_event=%d Up\n", cinergyt2->rc_input_event);
 740                                 input_report_key(cinergyt2->rc_input_dev,
 741                                                  cinergyt2->rc_input_event, 0);
 742                                 cinergyt2->rc_input_event = KEY_MAX;
 743                         }
 744                         cinergyt2->rc_last_code = ~0;
 745                 }
 746                 goto out;
 747         }
 748         cinergyt2->last_event_jiffies = jiffies;
 749
 750         for (n = 0; n < (len / sizeof(rc_events[0])); n++) {
 751                 dprintk(1, "rc_events[%d].value = %x, type=%x\n",
 752                         n, le32_to_cpu(rc_events[n].value), rc_events[n].type);
 753
 754                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
 755                     rc_events[n].value == ~0) {
 756                         /* keyrepeat bit -> just repeat last rc_input_event */
 757                 } else {
 758                         cinergyt2->rc_input_event = KEY_MAX;
 759                         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3) {
 760                                 if (rc_keys[i + 0] == rc_events[n].type &&
 761                                     rc_keys[i + 1] == le32_to_cpu(rc_events[n].value)) {
 762                                         cinergyt2->rc_input_event = rc_keys[i + 2];
 763                                         break;
 764                                 }
 765                         }
 766                 }
 767
 768                 if (cinergyt2->rc_input_event != KEY_MAX) {
 769                         if (rc_events[n].value == cinergyt2->rc_last_code &&
 770                             cinergyt2->rc_last_code != ~0) {
 771                                 /* emit a key-up so the double event is recognized */
 772                                 dprintk(1, "rc_input_event=%d UP\n", cinergyt2->rc_input_event);
 773                                 input_report_key(cinergyt2->rc_input_dev,
 774                                                  cinergyt2->rc_input_event, 0);
 775                         }
 776                         dprintk(1, "rc_input_event=%d\n", cinergyt2->rc_input_event);
 777                         input_report_key(cinergyt2->rc_input_dev,
 778                                          cinergyt2->rc_input_event, 1);
 779                         cinergyt2->rc_last_code = rc_events[n].value;
 780                 }
 781         }
 782
 783 out:
 784         schedule_delayed_work(&cinergyt2->rc_query_work,
 785                               msecs_to_jiffies(RC_QUERY_INTERVAL));
 786
 787         up(&cinergyt2->sem);
 788 }
 789
 790 static int cinergyt2_register_rc(struct cinergyt2 *cinergyt2)
 791 {
 792         struct input_dev *input_dev;
 793         int i;
 794
 795         cinergyt2->rc_input_dev = input_dev = input_allocate_device();
 796         if (!input_dev)
 797                 return -ENOMEM;
 798
 799         usb_make_path(cinergyt2->udev, cinergyt2->phys, sizeof(cinergyt2->phys));
 800         strlcat(cinergyt2->phys, "/input0", sizeof(cinergyt2->phys));
 801         cinergyt2->rc_input_event = KEY_MAX;
 802         cinergyt2->rc_last_code = ~0;
 803         INIT_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc, cinergyt2);
 804
 805         input_dev->name = DRIVER_NAME " remote control";
 806         input_dev->phys = cinergyt2->phys;
 807         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
 808         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3)
 809                 set_bit(rc_keys[i + 2], input_dev->keybit);
 810         input_dev->keycodesize = 0;
 811         input_dev->keycodemax = 0;
 812
 813         input_register_device(cinergyt2->rc_input_dev);
 814         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 815
 816         return 0;
 817 }
 818
 819 static void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2)
 820 {
 821         cancel_delayed_work(&cinergyt2->rc_query_work);
 822         input_unregister_device(cinergyt2->rc_input_dev);
 823 }
 824
 825 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2)
 826 {
 827         cancel_delayed_work(&cinergyt2->rc_query_work);
 828 }
 829
 830 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2)
 831 {
 832         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 833 }
 834
 835 #else
 836
 837 static inline int cinergyt2_register_rc(struct cinergyt2 *cinergyt2) { return 0; }
 838 static inline void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2) { }
 839 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2) { }
 840 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2) { }
 841
 842 #endif /* ENABLE_RC */
 843
 844 static void cinergyt2_query (void *data)
 845 {
 846         struct cinergyt2 *cinergyt2 = (struct cinergyt2 *) data;
 847         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
 848         struct dvbt_get_status_msg *s = &cinergyt2->status;
 849         uint8_t lock_bits;
 850         uint32_t unc;
 851
 852         if (cinergyt2->disconnect_pending || down_interruptible(&cinergyt2->sem))
 853                 return;
 854
 855         unc = s->uncorrected_block_count;
 856         lock_bits = s->lock_bits;
 857
 858         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
 859
 860         unc += le32_to_cpu(s->uncorrected_block_count);
 861         s->uncorrected_block_count = unc;
 862
 863         if (lock_bits != s->lock_bits) {
 864                 wake_up_interruptible(&cinergyt2->poll_wq);
 865                 cinergyt2->pending_fe_events++;
 866         }
 867
 868         schedule_delayed_work(&cinergyt2->query_work,
 869                               msecs_to_jiffies(QUERY_INTERVAL));
 870
 871         up(&cinergyt2->sem);
 872 }
 873
 874 static int cinergyt2_probe (struct usb_interface *intf,
 875                   const struct usb_device_id *id)
 876 {
 877         struct cinergyt2 *cinergyt2;
 878         int err;
 879
 880         if (!(cinergyt2 = kmalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
 881                 dprintk(1, "out of memory?!?\n");
 882                 return -ENOMEM;
 883         }
 884
 885         memset (cinergyt2, 0, sizeof (struct cinergyt2));
 886         usb_set_intfdata (intf, (void *) cinergyt2);
 887
 888         init_MUTEX(&cinergyt2->sem);
 889         init_waitqueue_head (&cinergyt2->poll_wq);
 890         INIT_WORK(&cinergyt2->query_work, cinergyt2_query, cinergyt2);
 891
 892         cinergyt2->udev = interface_to_usbdev(intf);
 893         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 894
 895         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
 896                 dprintk(1, "unable to allocate stream urbs\n");
 897                 kfree(cinergyt2);
 898                 return -ENOMEM;
 899         }
 900
 901         dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME, THIS_MODULE);
 902
 903         cinergyt2->demux.priv = cinergyt2;
 904         cinergyt2->demux.filternum = 256;
 905         cinergyt2->demux.feednum = 256;
 906         cinergyt2->demux.start_feed = cinergyt2_start_feed;
 907         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
 908         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
 909                                             DMX_SECTION_FILTERING |
 910                                             DMX_MEMORY_BASED_FILTERING;
 911
 912         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
 913                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
 914                 goto bailout;
 915         }
 916
 917         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
 918         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
 919         cinergyt2->dmxdev.capabilities = 0;
 920
 921         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, &cinergyt2->adapter)) < 0) {
 922                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
 923                 goto bailout;
 924         }
 925
 926         if (dvb_net_init(&cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
 927                 dprintk(1, "dvb_net_init() failed!\n");
 928
 929         dvb_register_device(&cinergyt2->adapter, &cinergyt2->fedev,
 930                             &cinergyt2_fe_template, cinergyt2,
 931                             DVB_DEVICE_FRONTEND);
 932
 933         err = cinergyt2_register_rc(cinergyt2);
 934         if (err)
 935                 goto bailout;
 936
 937         return 0;
 938
 939 bailout:
 940         dvb_dmxdev_release(&cinergyt2->dmxdev);
 941         dvb_dmx_release(&cinergyt2->demux);
 942         dvb_unregister_adapter(&cinergyt2->adapter);
 943         cinergyt2_free_stream_urbs(cinergyt2);
 944         kfree(cinergyt2);
 945         return -ENOMEM;
 946 }
 947
 948 static void cinergyt2_disconnect (struct usb_interface *intf)
 949 {
 950         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 951
 952         flush_scheduled_work();
 953
 954         cinergyt2_unregister_rc(cinergyt2);
 955
 956         cancel_delayed_work(&cinergyt2->query_work);
 957         wake_up_interruptible(&cinergyt2->poll_wq);
 958
 959         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
 960         cinergyt2->disconnect_pending = 1;
 961
 962         if (!atomic_read(&cinergyt2->inuse))
 963                 cinergyt2_unregister(cinergyt2);
 964 }
 965
 966 static int cinergyt2_suspend (struct usb_interface *intf, pm_message_t state)
 967 {
 968         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 969
 970         if (cinergyt2->disconnect_pending || down_interruptible(&cinergyt2->sem))
 971                 return -ERESTARTSYS;
 972
 973         if (state.event > PM_EVENT_ON) {
 974                 struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 975
 976                 cinergyt2_suspend_rc(cinergyt2);
 977                 cancel_delayed_work(&cinergyt2->query_work);
 978                 if (cinergyt2->streaming)
 979                         cinergyt2_stop_stream_xfer(cinergyt2);
 980                 flush_scheduled_work();
 981                 cinergyt2_sleep(cinergyt2, 1);
 982         }
 983
 984         up(&cinergyt2->sem);
 985         return 0;
 986 }
 987
 988 static int cinergyt2_resume (struct usb_interface *intf)
 989 {
 990         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 991         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 992
 993         if (cinergyt2->disconnect_pending || down_interruptible(&cinergyt2->sem))
 994                 return -ERESTARTSYS;
 995
 996         if (!cinergyt2->sleeping) {
 997                 cinergyt2_sleep(cinergyt2, 0);
 998                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
 999                 if (cinergyt2->streaming)
1000                         cinergyt2_start_stream_xfer(cinergyt2);
1001                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
1002         }
1003
1004         cinergyt2_resume_rc(cinergyt2);
1005
1006         up(&cinergyt2->sem);
1007         return 0;
1008 }
1009
1010 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
1011         { USB_DEVICE(0x0ccd, 0x0038) },
1012         { 0 }
1013 };
1014
1015 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
1016
1017 static struct usb_driver cinergyt2_driver = {
1018         .name   = "cinergyT2",
1019         .probe  = cinergyt2_probe,
1020         .disconnect     = cinergyt2_disconnect,
1021         .suspend        = cinergyt2_suspend,
1022         .resume         = cinergyt2_resume,
1023         .id_table       = cinergyt2_table
1024 };
1025
1026 static int __init cinergyt2_init (void)
1027 {
1028         int err;
1029
1030         if ((err = usb_register(&cinergyt2_driver)) < 0)
1031                 dprintk(1, "usb_register() failed! (err %i)\n", err);
1032
1033         return err;
1034 }
1035
1036 static void __exit cinergyt2_exit (void)
1037 {
1038         usb_deregister(&cinergyt2_driver);
1039 }
1040
1041 module_init (cinergyt2_init);
1042 module_exit (cinergyt2_exit);
1043
1044 MODULE_LICENSE("GPL");
1045 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");