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/version.h>
  29 #include <linux/slab.h>
  30 #include <linux/usb.h>
  31 #include <linux/pci.h>
  32 #include <linux/input.h>
  33 #include <linux/dvb/frontend.h>
  34
  35 #include "dmxdev.h"
  36 #include "dvb_demux.h"
  37 #include "dvb_net.h"
  38
  39
  40 #ifdef CONFIG_DVB_CINERGYT2_TUNING
  41         #define STREAM_URB_COUNT (CONFIG_DVB_CINERGYT2_STREAM_URB_COUNT)
  42         #define STREAM_BUF_SIZE (CONFIG_DVB_CINERGYT2_STREAM_BUF_SIZE)
  43         #define QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_QUERY_INTERVAL)
  44         #ifdef CONFIG_DVB_CINERGYT2_ENABLE_RC_INPUT_DEVICE
  45                 #define RC_QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_RC_QUERY_INTERVAL)
  46                 #define ENABLE_RC (1)
  47         #endif
  48 #else
  49         #define STREAM_URB_COUNT (32)
  50         #define STREAM_BUF_SIZE (512)   /* bytes */
  51         #define ENABLE_RC (1)
  52         #define RC_QUERY_INTERVAL (100) /* milliseconds */
  53         #define QUERY_INTERVAL (333)    /* milliseconds */
  54 #endif
  55
  56 #define DRIVER_NAME "TerraTec/qanu USB2.0 Highspeed DVB-T Receiver"
  57
  58 static int debug;
  59 module_param_named(debug, debug, int, 0644);
  60 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
  61
  62 #define dprintk(level, args...)                                         \
  63 do {                                                                    \
  64         if ((debug & level)) {                                          \
  65                 printk("%s: %s(): ", __stringify(KBUILD_MODNAME),       \
  66                        __FUNCTION__);                                   \
  67                 printk(args); }                                         \
  68 } while (0)
  69
  70 enum cinergyt2_ep1_cmd {
  71         CINERGYT2_EP1_PID_TABLE_RESET           = 0x01,
  72         CINERGYT2_EP1_PID_SETUP                 = 0x02,
  73         CINERGYT2_EP1_CONTROL_STREAM_TRANSFER   = 0x03,
  74         CINERGYT2_EP1_SET_TUNER_PARAMETERS      = 0x04,
  75         CINERGYT2_EP1_GET_TUNER_STATUS          = 0x05,
  76         CINERGYT2_EP1_START_SCAN                = 0x06,
  77         CINERGYT2_EP1_CONTINUE_SCAN             = 0x07,
  78         CINERGYT2_EP1_GET_RC_EVENTS             = 0x08,
  79         CINERGYT2_EP1_SLEEP_MODE                = 0x09
  80 };
  81
  82 struct dvbt_set_parameters_msg {
  83         uint8_t cmd;
  84         uint32_t freq;
  85         uint8_t bandwidth;
  86         uint16_t tps;
  87         uint8_t flags;
  88 } __attribute__((packed));
  89
  90 struct dvbt_get_status_msg {
  91         uint32_t freq;
  92         uint8_t bandwidth;
  93         uint16_t tps;
  94         uint8_t flags;
  95         uint16_t gain;
  96         uint8_t snr;
  97         uint32_t viterbi_error_rate;
  98         uint32_t rs_error_rate;
  99         uint32_t uncorrected_block_count;
 100         uint8_t lock_bits;
 101         uint8_t prev_lock_bits;
 102 } __attribute__((packed));
 103
 104 static struct dvb_frontend_info cinergyt2_fe_info = {
 105         .name = DRIVER_NAME,
 106         .type = FE_OFDM,
 107         .frequency_min = 174000000,
 108         .frequency_max = 862000000,
 109         .frequency_stepsize = 166667,
 110         .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
 111                 FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
 112                 FE_CAN_FEC_AUTO |
 113                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 114                 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
 115                 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS
 116 };
 117
 118 struct cinergyt2 {
 119         struct dvb_demux demux;
 120         struct usb_device *udev;
 121         struct semaphore 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 work_struct query_work;
 133
 134         wait_queue_head_t poll_wq;
 135         int pending_fe_events;
 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         struct work_struct rc_query_work;
 144         int rc_input_event;
 145 #endif
 146 };
 147
 148 enum {
 149         CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
 150         CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
 151         CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
 152 };
 153
 154 struct cinergyt2_rc_event {
 155         char type;
 156         uint32_t value;
 157 } __attribute__((packed));
 158
 159 static const uint32_t rc_keys [] = {
 160         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfe01eb04,     KEY_POWER,
 161         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfd02eb04,     KEY_1,
 162         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfc03eb04,     KEY_2,
 163         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfb04eb04,     KEY_3,
 164         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfa05eb04,     KEY_4,
 165         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf906eb04,     KEY_5,
 166         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf807eb04,     KEY_6,
 167         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf708eb04,     KEY_7,
 168         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf609eb04,     KEY_8,
 169         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf50aeb04,     KEY_9,
 170         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf30ceb04,     KEY_0,
 171         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf40beb04,     KEY_VIDEO,
 172         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf20deb04,     KEY_REFRESH,
 173         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf10eeb04,     KEY_SELECT,
 174         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf00feb04,     KEY_EPG,
 175         CINERGYT2_RC_EVENT_TYPE_NEC,    0xef10eb04,     KEY_UP,
 176         CINERGYT2_RC_EVENT_TYPE_NEC,    0xeb14eb04,     KEY_DOWN,
 177         CINERGYT2_RC_EVENT_TYPE_NEC,    0xee11eb04,     KEY_LEFT,
 178         CINERGYT2_RC_EVENT_TYPE_NEC,    0xec13eb04,     KEY_RIGHT,
 179         CINERGYT2_RC_EVENT_TYPE_NEC,    0xed12eb04,     KEY_OK,
 180         CINERGYT2_RC_EVENT_TYPE_NEC,    0xea15eb04,     KEY_TEXT,
 181         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe916eb04,     KEY_INFO,
 182         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe817eb04,     KEY_RED,
 183         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe718eb04,     KEY_GREEN,
 184         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe619eb04,     KEY_YELLOW,
 185         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe51aeb04,     KEY_BLUE,
 186         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe31ceb04,     KEY_VOLUMEUP,
 187         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe11eeb04,     KEY_VOLUMEDOWN,
 188         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe21deb04,     KEY_MUTE,
 189         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe41beb04,     KEY_CHANNELUP,
 190         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe01feb04,     KEY_CHANNELDOWN,
 191         CINERGYT2_RC_EVENT_TYPE_NEC,    0xbf40eb04,     KEY_PAUSE,
 192         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb34ceb04,     KEY_PLAY,
 193         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa758eb04,     KEY_RECORD,
 194         CINERGYT2_RC_EVENT_TYPE_NEC,    0xab54eb04,     KEY_PREVIOUS,
 195         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb748eb04,     KEY_STOP,
 196         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa35ceb04,     KEY_NEXT
 197 };
 198
 199 static int cinergyt2_command (struct cinergyt2 *cinergyt2,
 200                               char *send_buf, int send_buf_len,
 201                               char *recv_buf, int recv_buf_len)
 202 {
 203         int actual_len;
 204         char dummy;
 205         int ret;
 206
 207         ret = usb_bulk_msg(cinergyt2->udev, usb_sndbulkpipe(cinergyt2->udev, 1),
 208                            send_buf, send_buf_len, &actual_len, 1000);
 209
 210         if (ret)
 211                 dprintk(1, "usb_bulk_msg (send) failed, err %i\n", ret);
 212
 213         if (!recv_buf)
 214                 recv_buf = &dummy;
 215
 216         ret = usb_bulk_msg(cinergyt2->udev, usb_rcvbulkpipe(cinergyt2->udev, 1),
 217                            recv_buf, recv_buf_len, &actual_len, 1000);
 218
 219         if (ret)
 220                 dprintk(1, "usb_bulk_msg (read) failed, err %i\n", ret);
 221
 222         return ret ? ret : actual_len;
 223 }
 224
 225 static void cinergyt2_control_stream_transfer (struct cinergyt2 *cinergyt2, int enable)
 226 {
 227         char buf [] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
 228         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 229 }
 230
 231 static void cinergyt2_sleep (struct cinergyt2 *cinergyt2, int sleep)
 232 {
 233         char buf [] = { CINERGYT2_EP1_SLEEP_MODE, sleep ? 1 : 0 };
 234         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
 235         cinergyt2->sleeping = sleep;
 236 }
 237
 238 static void cinergyt2_stream_irq (struct urb *urb, struct pt_regs *regs);
 239
 240 static int cinergyt2_submit_stream_urb (struct cinergyt2 *cinergyt2, struct urb *urb)
 241 {
 242         int err;
 243
 244         usb_fill_bulk_urb(urb,
 245                           cinergyt2->udev,
 246                           usb_rcvbulkpipe(cinergyt2->udev, 0x2),
 247                           urb->transfer_buffer,
 248                           STREAM_BUF_SIZE,
 249                           cinergyt2_stream_irq,
 250                           cinergyt2);
 251
 252         if ((err = usb_submit_urb(urb, GFP_ATOMIC)))
 253                 dprintk(1, "urb submission failed (err = %i)!\n", err);
 254
 255         return err;
 256 }
 257
 258 static void cinergyt2_stream_irq (struct urb *urb, struct pt_regs *regs)
 259 {
 260         struct cinergyt2 *cinergyt2 = urb->context;
 261
 262         if (urb->actual_length > 0)
 263                 dvb_dmx_swfilter(&cinergyt2->demux,
 264                                  urb->transfer_buffer, urb->actual_length);
 265
 266         if (cinergyt2->streaming)
 267                 cinergyt2_submit_stream_urb(cinergyt2, urb);
 268 }
 269
 270 static void cinergyt2_free_stream_urbs (struct cinergyt2 *cinergyt2)
 271 {
 272         int i;
 273
 274         for (i=0; i<STREAM_URB_COUNT; i++)
 275                 if (cinergyt2->stream_urb[i])
 276                         usb_free_urb(cinergyt2->stream_urb[i]);
 277
 278         pci_free_consistent(NULL, STREAM_URB_COUNT*STREAM_BUF_SIZE,
 279                             cinergyt2->streambuf, cinergyt2->streambuf_dmahandle);
 280 }
 281
 282 static int cinergyt2_alloc_stream_urbs (struct cinergyt2 *cinergyt2)
 283 {
 284         int i;
 285
 286         cinergyt2->streambuf = pci_alloc_consistent(NULL,
 287                                               STREAM_URB_COUNT*STREAM_BUF_SIZE,
 288                                               &cinergyt2->streambuf_dmahandle);
 289         if (!cinergyt2->streambuf) {
 290                 dprintk(1, "failed to alloc consistent stream memory area, bailing out!\n");
 291                 return -ENOMEM;
 292         }
 293
 294         memset(cinergyt2->streambuf, 0, STREAM_URB_COUNT*STREAM_BUF_SIZE);
 295
 296         for (i=0; i<STREAM_URB_COUNT; i++) {
 297                 struct urb *urb;
 298
 299                 if (!(urb = usb_alloc_urb(0, GFP_ATOMIC))) {
 300                         dprintk(1, "failed to alloc consistent stream urbs, bailing out!\n");
 301                         cinergyt2_free_stream_urbs(cinergyt2);
 302                         return -ENOMEM;
 303                 }
 304
 305                 urb->transfer_buffer = cinergyt2->streambuf + i * STREAM_BUF_SIZE;
 306                 urb->transfer_buffer_length = STREAM_BUF_SIZE;
 307
 308                 cinergyt2->stream_urb[i] = urb;
 309         }
 310
 311         return 0;
 312 }
 313
 314 static void cinergyt2_stop_stream_xfer (struct cinergyt2 *cinergyt2)
 315 {
 316         int i;
 317
 318         cinergyt2_control_stream_transfer(cinergyt2, 0);
 319
 320         for (i=0; i<STREAM_URB_COUNT; i++)
 321                 if (cinergyt2->stream_urb[i])
 322                         usb_kill_urb(cinergyt2->stream_urb[i]);
 323 }
 324
 325 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
 326 {
 327         int i, err;
 328
 329         for (i=0; i<STREAM_URB_COUNT; i++) {
 330                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
 331                         cinergyt2_stop_stream_xfer(cinergyt2);
 332                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
 333                         return err;
 334                 }
 335         }
 336
 337         cinergyt2_control_stream_transfer(cinergyt2, 1);
 338         return 0;
 339 }
 340
 341 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 342 {
 343         struct dvb_demux *demux = dvbdmxfeed->demux;
 344         struct cinergyt2 *cinergyt2 = demux->priv;
 345
 346         if (down_interruptible(&cinergyt2->sem))
 347                 return -ERESTARTSYS;
 348
 349         if (cinergyt2->streaming == 0)
 350                 cinergyt2_start_stream_xfer(cinergyt2);
 351
 352         cinergyt2->streaming++;
 353         up(&cinergyt2->sem);
 354         return 0;
 355 }
 356
 357 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 358 {
 359         struct dvb_demux *demux = dvbdmxfeed->demux;
 360         struct cinergyt2 *cinergyt2 = demux->priv;
 361
 362         if (down_interruptible(&cinergyt2->sem))
 363                 return -ERESTARTSYS;
 364
 365         if (--cinergyt2->streaming == 0)
 366                 cinergyt2_stop_stream_xfer(cinergyt2);
 367
 368         up(&cinergyt2->sem);
 369         return 0;
 370 }
 371
 372 /**
 373  *  convert linux-dvb frontend parameter set into TPS.
 374  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
 375  *
 376  *  This function is probably reusable and may better get placed in a support
 377  *  library.
 378  *
 379  *  We replace errornous fields by default TPS fields (the ones with value 0).
 380  */
 381 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
 382 {
 383         struct dvb_ofdm_parameters *op = &p->u.ofdm;
 384         uint16_t tps = 0;
 385
 386         switch (op->code_rate_HP) {
 387                 case FEC_2_3:
 388                         tps |= (1 << 7);
 389                         break;
 390                 case FEC_3_4:
 391                         tps |= (2 << 7);
 392                         break;
 393                 case FEC_5_6:
 394                         tps |= (3 << 7);
 395                         break;
 396                 case FEC_7_8:
 397                         tps |= (4 << 7);
 398                         break;
 399                 case FEC_1_2:
 400                 case FEC_AUTO:
 401                 default:
 402                         /* tps |= (0 << 7) */;
 403         }
 404
 405         switch (op->code_rate_LP) {
 406                 case FEC_2_3:
 407                         tps |= (1 << 4);
 408                         break;
 409                 case FEC_3_4:
 410                         tps |= (2 << 4);
 411                         break;
 412                 case FEC_5_6:
 413                         tps |= (3 << 4);
 414                         break;
 415                 case FEC_7_8:
 416                         tps |= (4 << 4);
 417                         break;
 418                 case FEC_1_2:
 419                 case FEC_AUTO:
 420                 default:
 421                         /* tps |= (0 << 4) */;
 422         }
 423
 424         switch (op->constellation) {
 425                 case QAM_16:
 426                         tps |= (1 << 13);
 427                         break;
 428                 case QAM_64:
 429                         tps |= (2 << 13);
 430                         break;
 431                 case QPSK:
 432                 default:
 433                         /* tps |= (0 << 13) */;
 434         }
 435
 436         switch (op->transmission_mode) {
 437                 case TRANSMISSION_MODE_8K:
 438                         tps |= (1 << 0);
 439                         break;
 440                 case TRANSMISSION_MODE_2K:
 441                 default:
 442                         /* tps |= (0 << 0) */;
 443         }
 444
 445         switch (op->guard_interval) {
 446                 case GUARD_INTERVAL_1_16:
 447                         tps |= (1 << 2);
 448                         break;
 449                 case GUARD_INTERVAL_1_8:
 450                         tps |= (2 << 2);
 451                         break;
 452                 case GUARD_INTERVAL_1_4:
 453                         tps |= (3 << 2);
 454                         break;
 455                 case GUARD_INTERVAL_1_32:
 456                 default:
 457                         /* tps |= (0 << 2) */;
 458         }
 459
 460         switch (op->hierarchy_information) {
 461                 case HIERARCHY_1:
 462                         tps |= (1 << 10);
 463                         break;
 464                 case HIERARCHY_2:
 465                         tps |= (2 << 10);
 466                         break;
 467                 case HIERARCHY_4:
 468                         tps |= (3 << 10);
 469                         break;
 470                 case HIERARCHY_NONE:
 471                 default:
 472                         /* tps |= (0 << 10) */;
 473         }
 474
 475         return tps;
 476 }
 477
 478 static int cinergyt2_open (struct inode *inode, struct file *file)
 479 {
 480         struct dvb_device *dvbdev = file->private_data;
 481         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 482         int err;
 483
 484         if ((err = dvb_generic_open(inode, file)))
 485                 return err;
 486
 487         if (down_interruptible(&cinergyt2->sem))
 488                 return -ERESTARTSYS;
 489
 490         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 491                 cinergyt2_sleep(cinergyt2, 0);
 492                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 493         }
 494
 495         up(&cinergyt2->sem);
 496         return 0;
 497 }
 498
 499 static int cinergyt2_release (struct inode *inode, struct file *file)
 500 {
 501         struct dvb_device *dvbdev = file->private_data;
 502         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 503
 504         if (down_interruptible(&cinergyt2->sem))
 505                 return -ERESTARTSYS;
 506
 507         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
 508                 cancel_delayed_work(&cinergyt2->query_work);
 509                 flush_scheduled_work();
 510                 cinergyt2_sleep(cinergyt2, 1);
 511         }
 512
 513         up(&cinergyt2->sem);
 514
 515         return dvb_generic_release(inode, file);
 516 }
 517
 518 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
 519 {
 520         struct dvb_device *dvbdev = file->private_data;
 521         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 522         poll_wait(file, &cinergyt2->poll_wq, wait);
 523         return (POLLIN | POLLRDNORM | POLLPRI);
 524 }
 525
 526
 527 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
 528                      unsigned cmd, unsigned long arg)
 529 {
 530         struct dvb_device *dvbdev = file->private_data;
 531         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 532         struct dvbt_get_status_msg *stat = &cinergyt2->status;
 533         fe_status_t status = 0;
 534
 535         switch (cmd) {
 536         case FE_GET_INFO:
 537                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
 538                                     sizeof(struct dvb_frontend_info));
 539
 540         case FE_READ_STATUS:
 541                 if (0xffff - le16_to_cpu(stat->gain) > 30)
 542                         status |= FE_HAS_SIGNAL;
 543                 if (stat->lock_bits & (1 << 6))
 544                         status |= FE_HAS_LOCK;
 545                 if (stat->lock_bits & (1 << 5))
 546                         status |= FE_HAS_SYNC;
 547                 if (stat->lock_bits & (1 << 4))
 548                         status |= FE_HAS_CARRIER;
 549                 if (stat->lock_bits & (1 << 1))
 550                         status |= FE_HAS_VITERBI;
 551
 552                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
 553
 554         case FE_READ_BER:
 555                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
 556                                 (__u32 __user *) arg);
 557
 558         case FE_READ_SIGNAL_STRENGTH:
 559                 return put_user(0xffff - le16_to_cpu(stat->gain),
 560                                 (__u16 __user *) arg);
 561
 562         case FE_READ_SNR:
 563                 return put_user((stat->snr << 8) | stat->snr,
 564                                 (__u16 __user *) arg);
 565
 566         case FE_READ_UNCORRECTED_BLOCKS:
 567                 /* UNC are already converted to host byte order... */
 568                 return put_user(stat->uncorrected_block_count,
 569                                 (__u32 __user *) arg);
 570
 571         case FE_SET_FRONTEND:
 572         {
 573                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 574                 struct dvb_frontend_parameters p;
 575                 int err;
 576
 577                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
 578                         return -EPERM;
 579
 580                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
 581                         return -EFAULT;
 582
 583                 if (down_interruptible(&cinergyt2->sem))
 584                         return -ERESTARTSYS;
 585
 586                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 587                 param->tps = cpu_to_le16(compute_tps(&p));
 588                 param->freq = cpu_to_le32(p.frequency / 1000);
 589                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
 590
 591                 stat->lock_bits = 0;
 592                 cinergyt2->pending_fe_events++;
 593                 wake_up_interruptible(&cinergyt2->poll_wq);
 594
 595                 err = cinergyt2_command(cinergyt2,
 596                                         (char *) param, sizeof(*param),
 597                                         NULL, 0);
 598
 599                 up(&cinergyt2->sem);
 600
 601                 return (err < 0) ? err : 0;
 602         }
 603
 604         case FE_GET_FRONTEND:
 605                 /**
 606                  *  trivial to implement (see struct dvbt_get_status_msg).
 607                  *  equivalent to FE_READ ioctls, but needs
 608                  *  TPS -> linux-dvb parameter set conversion. Feel free
 609                  *  to implement this and send us a patch if you need this
 610                  *  functionality.
 611                  */
 612                 break;
 613
 614         case FE_GET_EVENT:
 615         {
 616                 /**
 617                  *  for now we only fill the status field. the parameters
 618                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
 619                  */
 620                 struct dvb_frontend_event __user *e = (void __user *) arg;
 621                 if (cinergyt2->pending_fe_events == 0) {
 622                         if (file->f_flags & O_NONBLOCK)
 623                                 return -EWOULDBLOCK;
 624                         wait_event_interruptible(cinergyt2->poll_wq,
 625                                                  cinergyt2->pending_fe_events > 0);
 626                 }
 627                 cinergyt2->pending_fe_events = 0;
 628                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
 629                                         (unsigned long) &e->status);
 630         }
 631
 632         default:
 633                 ;
 634         }
 635
 636         return -EINVAL;
 637 }
 638
 639 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
 640 {
 641         struct dvb_device *dvbdev = file->private_data;
 642         struct cinergyt2 *cinergyt2 = dvbdev->priv;
 643         int ret = 0;
 644
 645         lock_kernel();
 646
 647         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
 648                 ret = -EPERM;
 649                 goto bailout;
 650         }
 651
 652         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
 653                 ret = -EINVAL;
 654                 goto bailout;
 655         }
 656
 657         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 658         vma->vm_file = file;
 659
 660         ret = remap_pfn_range(vma, vma->vm_start,
 661                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
 662                               vma->vm_end - vma->vm_start,
 663                               vma->vm_page_prot) ? -EAGAIN : 0;
 664 bailout:
 665         unlock_kernel();
 666         return ret;
 667 }
 668
 669 static struct file_operations cinergyt2_fops = {
 670         .owner          = THIS_MODULE,
 671         .ioctl          = cinergyt2_ioctl,
 672         .poll           = cinergyt2_poll,
 673         .open           = cinergyt2_open,
 674         .release        = cinergyt2_release,
 675         .mmap           = cinergyt2_mmap
 676 };
 677
 678 static struct dvb_device cinergyt2_fe_template = {
 679         .users = ~0,
 680         .writers = 1,
 681         .readers = (~0)-1,
 682         .fops = &cinergyt2_fops
 683 };
 684
 685 #ifdef ENABLE_RC
 686 static void cinergyt2_query_rc (void *data)
 687 {
 688         struct cinergyt2 *cinergyt2 = (struct cinergyt2 *) data;
 689         char buf [1] = { CINERGYT2_EP1_GET_RC_EVENTS };
 690         struct cinergyt2_rc_event rc_events[12];
 691         int n, len;
 692
 693         if (down_interruptible(&cinergyt2->sem))
 694                 return;
 695
 696         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
 697                              (char *) rc_events, sizeof(rc_events));
 698
 699         for (n=0; len>0 && n<(len/sizeof(rc_events[0])); n++) {
 700                 int i;
 701
 702                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
 703                     rc_events[n].value == ~0)
 704                 {
 705                         /**
 706                          * keyrepeat bit. If we would handle this properly
 707                          * we would need to emit down events as long the
 708                          * keyrepeat goes, a up event if no further
 709                          * repeat bits occur. Would need a timer to implement
 710                          * and no other driver does this, so we simply
 711                          * emit the last key up/down sequence again.
 712                          */
 713                 } else {
 714                         cinergyt2->rc_input_event = KEY_MAX;
 715                         for (i=0; i<sizeof(rc_keys)/sizeof(rc_keys[0]); i+=3) {
 716                                 if (rc_keys[i+0] == rc_events[n].type &&
 717                                     rc_keys[i+1] == rc_events[n].value)
 718                                 {
 719                                         cinergyt2->rc_input_event = rc_keys[i+2];
 720                                         break;
 721                                 }
 722                         }
 723                 }
 724
 725                 if (cinergyt2->rc_input_event != KEY_MAX) {
 726                         input_report_key(&cinergyt2->rc_input_dev, cinergyt2->rc_input_event, 1);
 727                         input_report_key(&cinergyt2->rc_input_dev, cinergyt2->rc_input_event, 0);
 728                         input_sync(&cinergyt2->rc_input_dev);
 729                 }
 730         }
 731
 732         schedule_delayed_work(&cinergyt2->rc_query_work,
 733                               msecs_to_jiffies(RC_QUERY_INTERVAL));
 734
 735         up(&cinergyt2->sem);
 736 }
 737 #endif
 738
 739 static void cinergyt2_query (void *data)
 740 {
 741         struct cinergyt2 *cinergyt2 = (struct cinergyt2 *) data;
 742         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
 743         struct dvbt_get_status_msg *s = &cinergyt2->status;
 744         uint8_t lock_bits;
 745         uint32_t unc;
 746
 747         if (down_interruptible(&cinergyt2->sem))
 748                 return;
 749
 750         unc = s->uncorrected_block_count;
 751         lock_bits = s->lock_bits;
 752
 753         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
 754
 755         unc += le32_to_cpu(s->uncorrected_block_count);
 756         s->uncorrected_block_count = unc;
 757
 758         if (lock_bits != s->lock_bits) {
 759                 wake_up_interruptible(&cinergyt2->poll_wq);
 760                 cinergyt2->pending_fe_events++;
 761         }
 762
 763         schedule_delayed_work(&cinergyt2->query_work,
 764                               msecs_to_jiffies(QUERY_INTERVAL));
 765
 766         up(&cinergyt2->sem);
 767 }
 768
 769 static int cinergyt2_probe (struct usb_interface *intf,
 770                   const struct usb_device_id *id)
 771 {
 772         struct cinergyt2 *cinergyt2;
 773         int i, err;
 774
 775         if (!(cinergyt2 = kmalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
 776                 dprintk(1, "out of memory?!?\n");
 777                 return -ENOMEM;
 778         }
 779
 780         memset (cinergyt2, 0, sizeof (struct cinergyt2));
 781         usb_set_intfdata (intf, (void *) cinergyt2);
 782
 783         init_MUTEX(&cinergyt2->sem);
 784         init_waitqueue_head (&cinergyt2->poll_wq);
 785         INIT_WORK(&cinergyt2->query_work, cinergyt2_query, cinergyt2);
 786
 787         cinergyt2->udev = interface_to_usbdev(intf);
 788         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
 789
 790         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
 791                 dprintk(1, "unable to allocate stream urbs\n");
 792                 kfree(cinergyt2);
 793                 return -ENOMEM;
 794         }
 795
 796         dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME, THIS_MODULE);
 797
 798         cinergyt2->demux.priv = cinergyt2;
 799         cinergyt2->demux.filternum = 256;
 800         cinergyt2->demux.feednum = 256;
 801         cinergyt2->demux.start_feed = cinergyt2_start_feed;
 802         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
 803         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
 804                                             DMX_SECTION_FILTERING |
 805                                             DMX_MEMORY_BASED_FILTERING;
 806
 807         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
 808                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
 809                 goto bailout;
 810         }
 811
 812         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
 813         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
 814         cinergyt2->dmxdev.capabilities = 0;
 815
 816         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, cinergyt2->adapter)) < 0) {
 817                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
 818                 goto bailout;
 819         }
 820
 821         if (dvb_net_init(cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
 822                 dprintk(1, "dvb_net_init() failed!\n");
 823
 824         dvb_register_device(cinergyt2->adapter, &cinergyt2->fedev,
 825                             &cinergyt2_fe_template, cinergyt2,
 826                             DVB_DEVICE_FRONTEND);
 827
 828 #ifdef ENABLE_RC
 829         init_input_dev(&cinergyt2->rc_input_dev);
 830
 831         cinergyt2->rc_input_dev.evbit[0] = BIT(EV_KEY);
 832         cinergyt2->rc_input_dev.keycodesize = sizeof(unsigned char);
 833         cinergyt2->rc_input_dev.keycodemax = KEY_MAX;
 834         cinergyt2->rc_input_dev.name = DRIVER_NAME " remote control";
 835
 836         for (i=0; i<sizeof(rc_keys)/sizeof(rc_keys[0]); i+=3)
 837                 set_bit(rc_keys[i+2], cinergyt2->rc_input_dev.keybit);
 838
 839         input_register_device(&cinergyt2->rc_input_dev);
 840
 841         cinergyt2->rc_input_event = KEY_MAX;
 842
 843         INIT_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc, cinergyt2);
 844         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 845 #endif
 846         return 0;
 847
 848 bailout:
 849         dvb_dmxdev_release(&cinergyt2->dmxdev);
 850         dvb_dmx_release(&cinergyt2->demux);
 851         dvb_unregister_adapter (cinergyt2->adapter);
 852         cinergyt2_free_stream_urbs (cinergyt2);
 853         kfree(cinergyt2);
 854         return -ENOMEM;
 855 }
 856
 857 static void cinergyt2_disconnect (struct usb_interface *intf)
 858 {
 859         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 860
 861         if (down_interruptible(&cinergyt2->sem))
 862                 return;
 863
 864 #ifdef ENABLE_RC
 865         cancel_delayed_work(&cinergyt2->rc_query_work);
 866         flush_scheduled_work();
 867         input_unregister_device(&cinergyt2->rc_input_dev);
 868 #endif
 869
 870         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
 871         dvb_net_release(&cinergyt2->dvbnet);
 872         dvb_dmxdev_release(&cinergyt2->dmxdev);
 873         dvb_dmx_release(&cinergyt2->demux);
 874         dvb_unregister_device(cinergyt2->fedev);
 875         dvb_unregister_adapter(cinergyt2->adapter);
 876
 877         cinergyt2_free_stream_urbs(cinergyt2);
 878         up(&cinergyt2->sem);
 879         kfree(cinergyt2);
 880 }
 881
 882 static int cinergyt2_suspend (struct usb_interface *intf, u32 state)
 883 {
 884         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 885
 886         if (down_interruptible(&cinergyt2->sem))
 887                 return -ERESTARTSYS;
 888
 889         if (state > 0) {        /* state 0 seems to mean DEVICE_PM_ON */
 890                 struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 891 #ifdef ENABLE_RC
 892                 cancel_delayed_work(&cinergyt2->rc_query_work);
 893 #endif
 894                 cancel_delayed_work(&cinergyt2->query_work);
 895                 if (cinergyt2->streaming)
 896                         cinergyt2_stop_stream_xfer(cinergyt2);
 897                 flush_scheduled_work();
 898                 cinergyt2_sleep(cinergyt2, 1);
 899         }
 900
 901         up(&cinergyt2->sem);
 902         return 0;
 903 }
 904
 905 static int cinergyt2_resume (struct usb_interface *intf)
 906 {
 907         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
 908         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
 909
 910         if (down_interruptible(&cinergyt2->sem))
 911                 return -ERESTARTSYS;
 912
 913         if (!cinergyt2->sleeping) {
 914                 cinergyt2_sleep(cinergyt2, 0);
 915                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
 916                 if (cinergyt2->streaming)
 917                         cinergyt2_start_stream_xfer(cinergyt2);
 918                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
 919         }
 920
 921 #ifdef ENABLE_RC
 922         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
 923 #endif
 924         up(&cinergyt2->sem);
 925         return 0;
 926 }
 927
 928 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
 929         { USB_DEVICE(0x0ccd, 0x0038) },
 930         { 0 }
 931 };
 932
 933 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
 934
 935 static struct usb_driver cinergyt2_driver = {
 936         .owner  = THIS_MODULE,
 937         .name   = "cinergyT2",
 938         .probe  = cinergyt2_probe,
 939         .disconnect     = cinergyt2_disconnect,
 940         .suspend        = cinergyt2_suspend,
 941         .resume         = cinergyt2_resume,
 942         .id_table       = cinergyt2_table
 943 };
 944
 945 static int __init cinergyt2_init (void)
 946 {
 947         int err;
 948
 949         if ((err = usb_register(&cinergyt2_driver)) < 0)
 950                 dprintk(1, "usb_register() failed! (err %i)\n", err);
 951
 952         return err;
 953 }
 954
 955 static void __exit cinergyt2_exit (void)
 956 {
 957         usb_deregister(&cinergyt2_driver);
 958 }
 959
 960 module_init (cinergyt2_init);
 961 module_exit (cinergyt2_exit);
 962
 963 MODULE_LICENSE("GPL");
 964 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");
 965