V4L/DVB (6649): Add support for the DViCO FusionHDTV Dual Digital 4
[linux-2.6] / drivers / media / dvb / cinergyT2 / cinergyT2.c
1 /*
2  * TerraTec Cinergy T²/qanu USB2 DVB-T adapter.
3  *
4  * Copyright (C) 2004 Daniel Mack <daniel@qanu.de> and
5  *                  Holger Waechtler <holger@qanu.de>
6  *
7  *  Protocol Spec published on http://qanu.de/specs/terratec_cinergyT2.pdf
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22  *
23  */
24
25 #include <linux/init.h>
26 #include <linux/module.h>
27 #include <linux/slab.h>
28 #include <linux/usb.h>
29 #include <linux/input.h>
30 #include <linux/dvb/frontend.h>
31 #include <linux/mutex.h>
32 #include <linux/mm.h>
33 #include <asm/io.h>
34
35 #include "dmxdev.h"
36 #include "dvb_demux.h"
37 #include "dvb_net.h"
38
39 #ifdef CONFIG_DVB_CINERGYT2_TUNING
40         #define STREAM_URB_COUNT (CONFIG_DVB_CINERGYT2_STREAM_URB_COUNT)
41         #define STREAM_BUF_SIZE (CONFIG_DVB_CINERGYT2_STREAM_BUF_SIZE)
42         #define QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_QUERY_INTERVAL)
43         #ifdef CONFIG_DVB_CINERGYT2_ENABLE_RC_INPUT_DEVICE
44                 #define RC_QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_RC_QUERY_INTERVAL)
45                 #define ENABLE_RC (1)
46         #endif
47 #else
48         #define STREAM_URB_COUNT (32)
49         #define STREAM_BUF_SIZE (512)   /* bytes */
50         #define ENABLE_RC (1)
51         #define RC_QUERY_INTERVAL (50)  /* milliseconds */
52         #define QUERY_INTERVAL (333)    /* milliseconds */
53 #endif
54
55 #define DRIVER_NAME "TerraTec/qanu USB2.0 Highspeed DVB-T Receiver"
56
57 static int debug;
58 module_param_named(debug, debug, int, 0644);
59 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
60
61 #define dprintk(level, args...)                                         \
62 do {                                                                    \
63         if ((debug & level)) {                                          \
64                 printk("%s: %s(): ", KBUILD_MODNAME,                    \
65                        __FUNCTION__);                                   \
66                 printk(args); }                                         \
67 } while (0)
68
69 enum cinergyt2_ep1_cmd {
70         CINERGYT2_EP1_PID_TABLE_RESET           = 0x01,
71         CINERGYT2_EP1_PID_SETUP                 = 0x02,
72         CINERGYT2_EP1_CONTROL_STREAM_TRANSFER   = 0x03,
73         CINERGYT2_EP1_SET_TUNER_PARAMETERS      = 0x04,
74         CINERGYT2_EP1_GET_TUNER_STATUS          = 0x05,
75         CINERGYT2_EP1_START_SCAN                = 0x06,
76         CINERGYT2_EP1_CONTINUE_SCAN             = 0x07,
77         CINERGYT2_EP1_GET_RC_EVENTS             = 0x08,
78         CINERGYT2_EP1_SLEEP_MODE                = 0x09
79 };
80
81 struct dvbt_set_parameters_msg {
82         uint8_t cmd;
83         uint32_t freq;
84         uint8_t bandwidth;
85         uint16_t tps;
86         uint8_t flags;
87 } __attribute__((packed));
88
89 struct dvbt_get_status_msg {
90         uint32_t freq;
91         uint8_t bandwidth;
92         uint16_t tps;
93         uint8_t flags;
94         uint16_t gain;
95         uint8_t snr;
96         uint32_t viterbi_error_rate;
97         uint32_t rs_error_rate;
98         uint32_t uncorrected_block_count;
99         uint8_t lock_bits;
100         uint8_t prev_lock_bits;
101 } __attribute__((packed));
102
103 static struct dvb_frontend_info cinergyt2_fe_info = {
104         .name = DRIVER_NAME,
105         .type = FE_OFDM,
106         .frequency_min = 174000000,
107         .frequency_max = 862000000,
108         .frequency_stepsize = 166667,
109         .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
110                 FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
111                 FE_CAN_FEC_AUTO |
112                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
113                 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
114                 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS
115 };
116
117 struct cinergyt2 {
118         struct dvb_demux demux;
119         struct usb_device *udev;
120         struct mutex sem;
121         struct mutex wq_sem;
122         struct dvb_adapter adapter;
123         struct dvb_device *fedev;
124         struct dmxdev dmxdev;
125         struct dvb_net dvbnet;
126
127         int streaming;
128         int sleeping;
129
130         struct dvbt_set_parameters_msg param;
131         struct dvbt_get_status_msg status;
132         struct delayed_work query_work;
133
134         wait_queue_head_t poll_wq;
135         int pending_fe_events;
136         int disconnect_pending;
137         atomic_t inuse;
138
139         void *streambuf;
140         dma_addr_t streambuf_dmahandle;
141         struct urb *stream_urb [STREAM_URB_COUNT];
142
143 #ifdef ENABLE_RC
144         struct input_dev *rc_input_dev;
145         char phys[64];
146         struct delayed_work rc_query_work;
147         int rc_input_event;
148         u32 rc_last_code;
149         unsigned long last_event_jiffies;
150 #endif
151 };
152
153 enum {
154         CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
155         CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
156         CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
157 };
158
159 struct cinergyt2_rc_event {
160         char type;
161         uint32_t value;
162 } __attribute__((packed));
163
164 static const uint32_t rc_keys[] = {
165         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfe01eb04,     KEY_POWER,
166         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfd02eb04,     KEY_1,
167         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfc03eb04,     KEY_2,
168         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfb04eb04,     KEY_3,
169         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfa05eb04,     KEY_4,
170         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf906eb04,     KEY_5,
171         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf807eb04,     KEY_6,
172         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf708eb04,     KEY_7,
173         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf609eb04,     KEY_8,
174         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf50aeb04,     KEY_9,
175         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf30ceb04,     KEY_0,
176         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf40beb04,     KEY_VIDEO,
177         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf20deb04,     KEY_REFRESH,
178         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf10eeb04,     KEY_SELECT,
179         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf00feb04,     KEY_EPG,
180         CINERGYT2_RC_EVENT_TYPE_NEC,    0xef10eb04,     KEY_UP,
181         CINERGYT2_RC_EVENT_TYPE_NEC,    0xeb14eb04,     KEY_DOWN,
182         CINERGYT2_RC_EVENT_TYPE_NEC,    0xee11eb04,     KEY_LEFT,
183         CINERGYT2_RC_EVENT_TYPE_NEC,    0xec13eb04,     KEY_RIGHT,
184         CINERGYT2_RC_EVENT_TYPE_NEC,    0xed12eb04,     KEY_OK,
185         CINERGYT2_RC_EVENT_TYPE_NEC,    0xea15eb04,     KEY_TEXT,
186         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe916eb04,     KEY_INFO,
187         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe817eb04,     KEY_RED,
188         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe718eb04,     KEY_GREEN,
189         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe619eb04,     KEY_YELLOW,
190         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe51aeb04,     KEY_BLUE,
191         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe31ceb04,     KEY_VOLUMEUP,
192         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe11eeb04,     KEY_VOLUMEDOWN,
193         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe21deb04,     KEY_MUTE,
194         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe41beb04,     KEY_CHANNELUP,
195         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe01feb04,     KEY_CHANNELDOWN,
196         CINERGYT2_RC_EVENT_TYPE_NEC,    0xbf40eb04,     KEY_PAUSE,
197         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb34ceb04,     KEY_PLAY,
198         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa758eb04,     KEY_RECORD,
199         CINERGYT2_RC_EVENT_TYPE_NEC,    0xab54eb04,     KEY_PREVIOUS,
200         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb748eb04,     KEY_STOP,
201         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa35ceb04,     KEY_NEXT
202 };
203
204 static int cinergyt2_command (struct cinergyt2 *cinergyt2,
205                               char *send_buf, int send_buf_len,
206                               char *recv_buf, int recv_buf_len)
207 {
208         int actual_len;
209         char dummy;
210         int ret;
211
212         ret = usb_bulk_msg(cinergyt2->udev, usb_sndbulkpipe(cinergyt2->udev, 1),
213                            send_buf, send_buf_len, &actual_len, 1000);
214
215         if (ret)
216                 dprintk(1, "usb_bulk_msg (send) failed, err %i\n", ret);
217
218         if (!recv_buf)
219                 recv_buf = &dummy;
220
221         ret = usb_bulk_msg(cinergyt2->udev, usb_rcvbulkpipe(cinergyt2->udev, 1),
222                            recv_buf, recv_buf_len, &actual_len, 1000);
223
224         if (ret)
225                 dprintk(1, "usb_bulk_msg (read) failed, err %i\n", ret);
226
227         return ret ? ret : actual_len;
228 }
229
230 static void cinergyt2_control_stream_transfer (struct cinergyt2 *cinergyt2, int enable)
231 {
232         char buf [] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
233         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
234 }
235
236 static void cinergyt2_sleep (struct cinergyt2 *cinergyt2, int sleep)
237 {
238         char buf [] = { CINERGYT2_EP1_SLEEP_MODE, sleep ? 1 : 0 };
239         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
240         cinergyt2->sleeping = sleep;
241 }
242
243 static void cinergyt2_stream_irq (struct urb *urb);
244
245 static int cinergyt2_submit_stream_urb (struct cinergyt2 *cinergyt2, struct urb *urb)
246 {
247         int err;
248
249         usb_fill_bulk_urb(urb,
250                           cinergyt2->udev,
251                           usb_rcvbulkpipe(cinergyt2->udev, 0x2),
252                           urb->transfer_buffer,
253                           STREAM_BUF_SIZE,
254                           cinergyt2_stream_irq,
255                           cinergyt2);
256
257         if ((err = usb_submit_urb(urb, GFP_ATOMIC)))
258                 dprintk(1, "urb submission failed (err = %i)!\n", err);
259
260         return err;
261 }
262
263 static void cinergyt2_stream_irq (struct urb *urb)
264 {
265         struct cinergyt2 *cinergyt2 = urb->context;
266
267         if (urb->actual_length > 0)
268                 dvb_dmx_swfilter(&cinergyt2->demux,
269                                  urb->transfer_buffer, urb->actual_length);
270
271         if (cinergyt2->streaming)
272                 cinergyt2_submit_stream_urb(cinergyt2, urb);
273 }
274
275 static void cinergyt2_free_stream_urbs (struct cinergyt2 *cinergyt2)
276 {
277         int i;
278
279         for (i=0; i<STREAM_URB_COUNT; i++)
280                 usb_free_urb(cinergyt2->stream_urb[i]);
281
282         usb_buffer_free(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
283                             cinergyt2->streambuf, cinergyt2->streambuf_dmahandle);
284 }
285
286 static int cinergyt2_alloc_stream_urbs (struct cinergyt2 *cinergyt2)
287 {
288         int i;
289
290         cinergyt2->streambuf = usb_buffer_alloc(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
291                                               GFP_KERNEL, &cinergyt2->streambuf_dmahandle);
292         if (!cinergyt2->streambuf) {
293                 dprintk(1, "failed to alloc consistent stream memory area, bailing out!\n");
294                 return -ENOMEM;
295         }
296
297         memset(cinergyt2->streambuf, 0, STREAM_URB_COUNT*STREAM_BUF_SIZE);
298
299         for (i=0; i<STREAM_URB_COUNT; i++) {
300                 struct urb *urb;
301
302                 if (!(urb = usb_alloc_urb(0, GFP_ATOMIC))) {
303                         dprintk(1, "failed to alloc consistent stream urbs, bailing out!\n");
304                         cinergyt2_free_stream_urbs(cinergyt2);
305                         return -ENOMEM;
306                 }
307
308                 urb->transfer_buffer = cinergyt2->streambuf + i * STREAM_BUF_SIZE;
309                 urb->transfer_buffer_length = STREAM_BUF_SIZE;
310
311                 cinergyt2->stream_urb[i] = urb;
312         }
313
314         return 0;
315 }
316
317 static void cinergyt2_stop_stream_xfer (struct cinergyt2 *cinergyt2)
318 {
319         int i;
320
321         cinergyt2_control_stream_transfer(cinergyt2, 0);
322
323         for (i=0; i<STREAM_URB_COUNT; i++)
324                 usb_kill_urb(cinergyt2->stream_urb[i]);
325 }
326
327 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
328 {
329         int i, err;
330
331         for (i=0; i<STREAM_URB_COUNT; i++) {
332                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
333                         cinergyt2_stop_stream_xfer(cinergyt2);
334                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
335                         return err;
336                 }
337         }
338
339         cinergyt2_control_stream_transfer(cinergyt2, 1);
340         return 0;
341 }
342
343 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
344 {
345         struct dvb_demux *demux = dvbdmxfeed->demux;
346         struct cinergyt2 *cinergyt2 = demux->priv;
347
348         if (cinergyt2->disconnect_pending)
349                 return -EAGAIN;
350         if (mutex_lock_interruptible(&cinergyt2->sem))
351                 return -ERESTARTSYS;
352
353         if (cinergyt2->streaming == 0)
354                 cinergyt2_start_stream_xfer(cinergyt2);
355
356         cinergyt2->streaming++;
357         mutex_unlock(&cinergyt2->sem);
358         return 0;
359 }
360
361 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
362 {
363         struct dvb_demux *demux = dvbdmxfeed->demux;
364         struct cinergyt2 *cinergyt2 = demux->priv;
365
366         if (cinergyt2->disconnect_pending)
367                 return -EAGAIN;
368         if (mutex_lock_interruptible(&cinergyt2->sem))
369                 return -ERESTARTSYS;
370
371         if (--cinergyt2->streaming == 0)
372                 cinergyt2_stop_stream_xfer(cinergyt2);
373
374         mutex_unlock(&cinergyt2->sem);
375         return 0;
376 }
377
378 /**
379  *  convert linux-dvb frontend parameter set into TPS.
380  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
381  *
382  *  This function is probably reusable and may better get placed in a support
383  *  library.
384  *
385  *  We replace errornous fields by default TPS fields (the ones with value 0).
386  */
387 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
388 {
389         struct dvb_ofdm_parameters *op = &p->u.ofdm;
390         uint16_t tps = 0;
391
392         switch (op->code_rate_HP) {
393                 case FEC_2_3:
394                         tps |= (1 << 7);
395                         break;
396                 case FEC_3_4:
397                         tps |= (2 << 7);
398                         break;
399                 case FEC_5_6:
400                         tps |= (3 << 7);
401                         break;
402                 case FEC_7_8:
403                         tps |= (4 << 7);
404                         break;
405                 case FEC_1_2:
406                 case FEC_AUTO:
407                 default:
408                         /* tps |= (0 << 7) */;
409         }
410
411         switch (op->code_rate_LP) {
412                 case FEC_2_3:
413                         tps |= (1 << 4);
414                         break;
415                 case FEC_3_4:
416                         tps |= (2 << 4);
417                         break;
418                 case FEC_5_6:
419                         tps |= (3 << 4);
420                         break;
421                 case FEC_7_8:
422                         tps |= (4 << 4);
423                         break;
424                 case FEC_1_2:
425                 case FEC_AUTO:
426                 default:
427                         /* tps |= (0 << 4) */;
428         }
429
430         switch (op->constellation) {
431                 case QAM_16:
432                         tps |= (1 << 13);
433                         break;
434                 case QAM_64:
435                         tps |= (2 << 13);
436                         break;
437                 case QPSK:
438                 default:
439                         /* tps |= (0 << 13) */;
440         }
441
442         switch (op->transmission_mode) {
443                 case TRANSMISSION_MODE_8K:
444                         tps |= (1 << 0);
445                         break;
446                 case TRANSMISSION_MODE_2K:
447                 default:
448                         /* tps |= (0 << 0) */;
449         }
450
451         switch (op->guard_interval) {
452                 case GUARD_INTERVAL_1_16:
453                         tps |= (1 << 2);
454                         break;
455                 case GUARD_INTERVAL_1_8:
456                         tps |= (2 << 2);
457                         break;
458                 case GUARD_INTERVAL_1_4:
459                         tps |= (3 << 2);
460                         break;
461                 case GUARD_INTERVAL_1_32:
462                 default:
463                         /* tps |= (0 << 2) */;
464         }
465
466         switch (op->hierarchy_information) {
467                 case HIERARCHY_1:
468                         tps |= (1 << 10);
469                         break;
470                 case HIERARCHY_2:
471                         tps |= (2 << 10);
472                         break;
473                 case HIERARCHY_4:
474                         tps |= (3 << 10);
475                         break;
476                 case HIERARCHY_NONE:
477                 default:
478                         /* tps |= (0 << 10) */;
479         }
480
481         return tps;
482 }
483
484 static int cinergyt2_open (struct inode *inode, struct file *file)
485 {
486         struct dvb_device *dvbdev = file->private_data;
487         struct cinergyt2 *cinergyt2 = dvbdev->priv;
488         int err = -EAGAIN;
489
490         if (cinergyt2->disconnect_pending)
491                 goto out;
492         err = mutex_lock_interruptible(&cinergyt2->wq_sem);
493         if (err)
494                 goto out;
495
496         err = mutex_lock_interruptible(&cinergyt2->sem);
497         if (err)
498                 goto out_unlock1;
499
500         if ((err = dvb_generic_open(inode, file)))
501                 goto out_unlock2;
502
503         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
504                 cinergyt2_sleep(cinergyt2, 0);
505                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
506         }
507
508         atomic_inc(&cinergyt2->inuse);
509
510 out_unlock2:
511         mutex_unlock(&cinergyt2->sem);
512 out_unlock1:
513         mutex_unlock(&cinergyt2->wq_sem);
514 out:
515         return err;
516 }
517
518 static void cinergyt2_unregister(struct cinergyt2 *cinergyt2)
519 {
520         dvb_net_release(&cinergyt2->dvbnet);
521         dvb_dmxdev_release(&cinergyt2->dmxdev);
522         dvb_dmx_release(&cinergyt2->demux);
523         dvb_unregister_device(cinergyt2->fedev);
524         dvb_unregister_adapter(&cinergyt2->adapter);
525
526         cinergyt2_free_stream_urbs(cinergyt2);
527         kfree(cinergyt2);
528 }
529
530 static int cinergyt2_release (struct inode *inode, struct file *file)
531 {
532         struct dvb_device *dvbdev = file->private_data;
533         struct cinergyt2 *cinergyt2 = dvbdev->priv;
534
535         mutex_lock(&cinergyt2->wq_sem);
536
537         if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
538                 cancel_rearming_delayed_work(&cinergyt2->query_work);
539
540                 mutex_lock(&cinergyt2->sem);
541                 cinergyt2_sleep(cinergyt2, 1);
542                 mutex_unlock(&cinergyt2->sem);
543         }
544
545         mutex_unlock(&cinergyt2->wq_sem);
546
547         if (atomic_dec_and_test(&cinergyt2->inuse) && cinergyt2->disconnect_pending) {
548                 warn("delayed unregister in release");
549                 cinergyt2_unregister(cinergyt2);
550         }
551
552         return dvb_generic_release(inode, file);
553 }
554
555 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
556 {
557         struct dvb_device *dvbdev = file->private_data;
558         struct cinergyt2 *cinergyt2 = dvbdev->priv;
559         unsigned int mask = 0;
560
561         if (cinergyt2->disconnect_pending)
562                 return -EAGAIN;
563         if (mutex_lock_interruptible(&cinergyt2->sem))
564                 return -ERESTARTSYS;
565
566         poll_wait(file, &cinergyt2->poll_wq, wait);
567
568         if (cinergyt2->pending_fe_events != 0)
569                 mask |= (POLLIN | POLLRDNORM | POLLPRI);
570
571         mutex_unlock(&cinergyt2->sem);
572
573         return mask;
574 }
575
576
577 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
578                      unsigned cmd, unsigned long arg)
579 {
580         struct dvb_device *dvbdev = file->private_data;
581         struct cinergyt2 *cinergyt2 = dvbdev->priv;
582         struct dvbt_get_status_msg *stat = &cinergyt2->status;
583         fe_status_t status = 0;
584
585         switch (cmd) {
586         case FE_GET_INFO:
587                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
588                                     sizeof(struct dvb_frontend_info));
589
590         case FE_READ_STATUS:
591                 if (0xffff - le16_to_cpu(stat->gain) > 30)
592                         status |= FE_HAS_SIGNAL;
593                 if (stat->lock_bits & (1 << 6))
594                         status |= FE_HAS_LOCK;
595                 if (stat->lock_bits & (1 << 5))
596                         status |= FE_HAS_SYNC;
597                 if (stat->lock_bits & (1 << 4))
598                         status |= FE_HAS_CARRIER;
599                 if (stat->lock_bits & (1 << 1))
600                         status |= FE_HAS_VITERBI;
601
602                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
603
604         case FE_READ_BER:
605                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
606                                 (__u32 __user *) arg);
607
608         case FE_READ_SIGNAL_STRENGTH:
609                 return put_user(0xffff - le16_to_cpu(stat->gain),
610                                 (__u16 __user *) arg);
611
612         case FE_READ_SNR:
613                 return put_user((stat->snr << 8) | stat->snr,
614                                 (__u16 __user *) arg);
615
616         case FE_READ_UNCORRECTED_BLOCKS:
617         {
618                 uint32_t unc_count;
619
620                 unc_count = stat->uncorrected_block_count;
621                 stat->uncorrected_block_count = 0;
622
623                 /* UNC are already converted to host byte order... */
624                 return put_user(unc_count,(__u32 __user *) arg);
625         }
626         case FE_SET_FRONTEND:
627         {
628                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
629                 struct dvb_frontend_parameters p;
630                 int err;
631
632                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
633                         return -EPERM;
634
635                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
636                         return -EFAULT;
637
638                 if (cinergyt2->disconnect_pending)
639                         return -EAGAIN;
640                 if (mutex_lock_interruptible(&cinergyt2->sem))
641                         return -ERESTARTSYS;
642
643                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
644                 param->tps = cpu_to_le16(compute_tps(&p));
645                 param->freq = cpu_to_le32(p.frequency / 1000);
646                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
647
648                 stat->lock_bits = 0;
649                 cinergyt2->pending_fe_events++;
650                 wake_up_interruptible(&cinergyt2->poll_wq);
651
652                 err = cinergyt2_command(cinergyt2,
653                                         (char *) param, sizeof(*param),
654                                         NULL, 0);
655
656                 mutex_unlock(&cinergyt2->sem);
657
658                 return (err < 0) ? err : 0;
659         }
660
661         case FE_GET_FRONTEND:
662                 /**
663                  *  trivial to implement (see struct dvbt_get_status_msg).
664                  *  equivalent to FE_READ ioctls, but needs
665                  *  TPS -> linux-dvb parameter set conversion. Feel free
666                  *  to implement this and send us a patch if you need this
667                  *  functionality.
668                  */
669                 break;
670
671         case FE_GET_EVENT:
672         {
673                 /**
674                  *  for now we only fill the status field. the parameters
675                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
676                  */
677                 struct dvb_frontend_event __user *e = (void __user *) arg;
678                 if (cinergyt2->pending_fe_events == 0) {
679                         if (file->f_flags & O_NONBLOCK)
680                                 return -EWOULDBLOCK;
681                         wait_event_interruptible(cinergyt2->poll_wq,
682                                                  cinergyt2->pending_fe_events > 0);
683                 }
684                 cinergyt2->pending_fe_events = 0;
685                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
686                                         (unsigned long) &e->status);
687         }
688
689         default:
690                 ;
691         }
692
693         return -EINVAL;
694 }
695
696 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
697 {
698         struct dvb_device *dvbdev = file->private_data;
699         struct cinergyt2 *cinergyt2 = dvbdev->priv;
700         int ret = 0;
701
702         lock_kernel();
703
704         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
705                 ret = -EPERM;
706                 goto bailout;
707         }
708
709         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
710                 ret = -EINVAL;
711                 goto bailout;
712         }
713
714         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
715         vma->vm_file = file;
716
717         ret = remap_pfn_range(vma, vma->vm_start,
718                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
719                               vma->vm_end - vma->vm_start,
720                               vma->vm_page_prot) ? -EAGAIN : 0;
721 bailout:
722         unlock_kernel();
723         return ret;
724 }
725
726 static struct file_operations cinergyt2_fops = {
727         .owner          = THIS_MODULE,
728         .ioctl          = cinergyt2_ioctl,
729         .poll           = cinergyt2_poll,
730         .open           = cinergyt2_open,
731         .release        = cinergyt2_release,
732         .mmap           = cinergyt2_mmap
733 };
734
735 static struct dvb_device cinergyt2_fe_template = {
736         .users = ~0,
737         .writers = 1,
738         .readers = (~0)-1,
739         .fops = &cinergyt2_fops
740 };
741
742 #ifdef ENABLE_RC
743
744 static void cinergyt2_query_rc (struct work_struct *work)
745 {
746         struct cinergyt2 *cinergyt2 =
747                 container_of(work, struct cinergyt2, rc_query_work.work);
748         char buf[1] = { CINERGYT2_EP1_GET_RC_EVENTS };
749         struct cinergyt2_rc_event rc_events[12];
750         int n, len, i;
751
752         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
753                 return;
754
755         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
756                                 (char *) rc_events, sizeof(rc_events));
757         if (len < 0)
758                 goto out;
759         if (len == 0) {
760                 if (time_after(jiffies, cinergyt2->last_event_jiffies +
761                                msecs_to_jiffies(150))) {
762                         /* stop key repeat */
763                         if (cinergyt2->rc_input_event != KEY_MAX) {
764                                 dprintk(1, "rc_input_event=%d Up\n", cinergyt2->rc_input_event);
765                                 input_report_key(cinergyt2->rc_input_dev,
766                                                  cinergyt2->rc_input_event, 0);
767                                 input_sync(cinergyt2->rc_input_dev);
768                                 cinergyt2->rc_input_event = KEY_MAX;
769                         }
770                         cinergyt2->rc_last_code = ~0;
771                 }
772                 goto out;
773         }
774         cinergyt2->last_event_jiffies = jiffies;
775
776         for (n = 0; n < (len / sizeof(rc_events[0])); n++) {
777                 dprintk(1, "rc_events[%d].value = %x, type=%x\n",
778                         n, le32_to_cpu(rc_events[n].value), rc_events[n].type);
779
780                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
781                     rc_events[n].value == ~0) {
782                         /* keyrepeat bit -> just repeat last rc_input_event */
783                 } else {
784                         cinergyt2->rc_input_event = KEY_MAX;
785                         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3) {
786                                 if (rc_keys[i + 0] == rc_events[n].type &&
787                                     rc_keys[i + 1] == le32_to_cpu(rc_events[n].value)) {
788                                         cinergyt2->rc_input_event = rc_keys[i + 2];
789                                         break;
790                                 }
791                         }
792                 }
793
794                 if (cinergyt2->rc_input_event != KEY_MAX) {
795                         if (rc_events[n].value == cinergyt2->rc_last_code &&
796                             cinergyt2->rc_last_code != ~0) {
797                                 /* emit a key-up so the double event is recognized */
798                                 dprintk(1, "rc_input_event=%d UP\n", cinergyt2->rc_input_event);
799                                 input_report_key(cinergyt2->rc_input_dev,
800                                                  cinergyt2->rc_input_event, 0);
801                         }
802                         dprintk(1, "rc_input_event=%d\n", cinergyt2->rc_input_event);
803                         input_report_key(cinergyt2->rc_input_dev,
804                                          cinergyt2->rc_input_event, 1);
805                         input_sync(cinergyt2->rc_input_dev);
806                         cinergyt2->rc_last_code = rc_events[n].value;
807                 }
808         }
809
810 out:
811         schedule_delayed_work(&cinergyt2->rc_query_work,
812                               msecs_to_jiffies(RC_QUERY_INTERVAL));
813
814         mutex_unlock(&cinergyt2->sem);
815 }
816
817 static int cinergyt2_register_rc(struct cinergyt2 *cinergyt2)
818 {
819         struct input_dev *input_dev;
820         int i;
821         int err;
822
823         input_dev = input_allocate_device();
824         if (!input_dev)
825                 return -ENOMEM;
826
827         usb_make_path(cinergyt2->udev, cinergyt2->phys, sizeof(cinergyt2->phys));
828         strlcat(cinergyt2->phys, "/input0", sizeof(cinergyt2->phys));
829         cinergyt2->rc_input_event = KEY_MAX;
830         cinergyt2->rc_last_code = ~0;
831         INIT_DELAYED_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc);
832
833         input_dev->name = DRIVER_NAME " remote control";
834         input_dev->phys = cinergyt2->phys;
835         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
836         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3)
837                 set_bit(rc_keys[i + 2], input_dev->keybit);
838         input_dev->keycodesize = 0;
839         input_dev->keycodemax = 0;
840         input_dev->id.bustype = BUS_USB;
841         input_dev->id.vendor = cinergyt2->udev->descriptor.idVendor;
842         input_dev->id.product = cinergyt2->udev->descriptor.idProduct;
843         input_dev->id.version = 1;
844         input_dev->dev.parent = &cinergyt2->udev->dev;
845
846         err = input_register_device(input_dev);
847         if (err) {
848                 input_free_device(input_dev);
849                 return err;
850         }
851
852         cinergyt2->rc_input_dev = input_dev;
853         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
854
855         return 0;
856 }
857
858 static void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2)
859 {
860         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
861         input_unregister_device(cinergyt2->rc_input_dev);
862 }
863
864 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2)
865 {
866         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
867 }
868
869 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2)
870 {
871         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
872 }
873
874 #else
875
876 static inline int cinergyt2_register_rc(struct cinergyt2 *cinergyt2) { return 0; }
877 static inline void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2) { }
878 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2) { }
879 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2) { }
880
881 #endif /* ENABLE_RC */
882
883 static void cinergyt2_query (struct work_struct *work)
884 {
885         struct cinergyt2 *cinergyt2 =
886                 container_of(work, struct cinergyt2, query_work.work);
887         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
888         struct dvbt_get_status_msg *s = &cinergyt2->status;
889         uint8_t lock_bits;
890         uint32_t unc;
891
892         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
893                 return;
894
895         unc = s->uncorrected_block_count;
896         lock_bits = s->lock_bits;
897
898         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
899
900         unc += le32_to_cpu(s->uncorrected_block_count);
901         s->uncorrected_block_count = unc;
902
903         if (lock_bits != s->lock_bits) {
904                 wake_up_interruptible(&cinergyt2->poll_wq);
905                 cinergyt2->pending_fe_events++;
906         }
907
908         schedule_delayed_work(&cinergyt2->query_work,
909                               msecs_to_jiffies(QUERY_INTERVAL));
910
911         mutex_unlock(&cinergyt2->sem);
912 }
913
914 static int cinergyt2_probe (struct usb_interface *intf,
915                   const struct usb_device_id *id)
916 {
917         struct cinergyt2 *cinergyt2;
918         int err;
919
920         if (!(cinergyt2 = kzalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
921                 dprintk(1, "out of memory?!?\n");
922                 return -ENOMEM;
923         }
924
925         usb_set_intfdata (intf, (void *) cinergyt2);
926
927         mutex_init(&cinergyt2->sem);
928         mutex_init(&cinergyt2->wq_sem);
929         init_waitqueue_head (&cinergyt2->poll_wq);
930         INIT_DELAYED_WORK(&cinergyt2->query_work, cinergyt2_query);
931
932         cinergyt2->udev = interface_to_usbdev(intf);
933         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
934
935         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
936                 dprintk(1, "unable to allocate stream urbs\n");
937                 kfree(cinergyt2);
938                 return -ENOMEM;
939         }
940
941         if ((err = dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME, THIS_MODULE, &cinergyt2->udev->dev)) < 0) {
942                 kfree(cinergyt2);
943                 return err;
944         }
945
946         cinergyt2->demux.priv = cinergyt2;
947         cinergyt2->demux.filternum = 256;
948         cinergyt2->demux.feednum = 256;
949         cinergyt2->demux.start_feed = cinergyt2_start_feed;
950         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
951         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
952                                             DMX_SECTION_FILTERING |
953                                             DMX_MEMORY_BASED_FILTERING;
954
955         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
956                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
957                 goto bailout;
958         }
959
960         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
961         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
962         cinergyt2->dmxdev.capabilities = 0;
963
964         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, &cinergyt2->adapter)) < 0) {
965                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
966                 goto bailout;
967         }
968
969         if (dvb_net_init(&cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
970                 dprintk(1, "dvb_net_init() failed!\n");
971
972         dvb_register_device(&cinergyt2->adapter, &cinergyt2->fedev,
973                             &cinergyt2_fe_template, cinergyt2,
974                             DVB_DEVICE_FRONTEND);
975
976         err = cinergyt2_register_rc(cinergyt2);
977         if (err)
978                 goto bailout;
979
980         return 0;
981
982 bailout:
983         dvb_net_release(&cinergyt2->dvbnet);
984         dvb_dmxdev_release(&cinergyt2->dmxdev);
985         dvb_dmx_release(&cinergyt2->demux);
986         dvb_unregister_adapter(&cinergyt2->adapter);
987         cinergyt2_free_stream_urbs(cinergyt2);
988         kfree(cinergyt2);
989         return -ENOMEM;
990 }
991
992 static void cinergyt2_disconnect (struct usb_interface *intf)
993 {
994         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
995
996         cinergyt2_unregister_rc(cinergyt2);
997         cancel_rearming_delayed_work(&cinergyt2->query_work);
998         wake_up_interruptible(&cinergyt2->poll_wq);
999
1000         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
1001         cinergyt2->disconnect_pending = 1;
1002
1003         if (!atomic_read(&cinergyt2->inuse))
1004                 cinergyt2_unregister(cinergyt2);
1005 }
1006
1007 static int cinergyt2_suspend (struct usb_interface *intf, pm_message_t state)
1008 {
1009         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1010
1011         if (cinergyt2->disconnect_pending)
1012                 return -EAGAIN;
1013         if (mutex_lock_interruptible(&cinergyt2->wq_sem))
1014                 return -ERESTARTSYS;
1015
1016         cinergyt2_suspend_rc(cinergyt2);
1017         cancel_rearming_delayed_work(&cinergyt2->query_work);
1018
1019         mutex_lock(&cinergyt2->sem);
1020         if (cinergyt2->streaming)
1021                 cinergyt2_stop_stream_xfer(cinergyt2);
1022         cinergyt2_sleep(cinergyt2, 1);
1023         mutex_unlock(&cinergyt2->sem);
1024
1025         mutex_unlock(&cinergyt2->wq_sem);
1026
1027         return 0;
1028 }
1029
1030 static int cinergyt2_resume (struct usb_interface *intf)
1031 {
1032         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1033         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
1034         int err = -EAGAIN;
1035
1036         if (cinergyt2->disconnect_pending)
1037                 goto out;
1038         err = mutex_lock_interruptible(&cinergyt2->wq_sem);
1039         if (err)
1040                 goto out;
1041
1042         err = mutex_lock_interruptible(&cinergyt2->sem);
1043         if (err)
1044                 goto out_unlock1;
1045
1046         if (!cinergyt2->sleeping) {
1047                 cinergyt2_sleep(cinergyt2, 0);
1048                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
1049                 if (cinergyt2->streaming)
1050                         cinergyt2_start_stream_xfer(cinergyt2);
1051                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
1052         }
1053
1054         cinergyt2_resume_rc(cinergyt2);
1055
1056         mutex_unlock(&cinergyt2->sem);
1057 out_unlock1:
1058         mutex_unlock(&cinergyt2->wq_sem);
1059 out:
1060         return err;
1061 }
1062
1063 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
1064         { USB_DEVICE(0x0ccd, 0x0038) },
1065         { 0 }
1066 };
1067
1068 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
1069
1070 static struct usb_driver cinergyt2_driver = {
1071         .name   = "cinergyT2",
1072         .probe  = cinergyt2_probe,
1073         .disconnect     = cinergyt2_disconnect,
1074         .suspend        = cinergyt2_suspend,
1075         .resume         = cinergyt2_resume,
1076         .id_table       = cinergyt2_table
1077 };
1078
1079 static int __init cinergyt2_init (void)
1080 {
1081         int err;
1082
1083         if ((err = usb_register(&cinergyt2_driver)) < 0)
1084                 dprintk(1, "usb_register() failed! (err %i)\n", err);
1085
1086         return err;
1087 }
1088
1089 static void __exit cinergyt2_exit (void)
1090 {
1091         usb_deregister(&cinergyt2_driver);
1092 }
1093
1094 module_init (cinergyt2_init);
1095 module_exit (cinergyt2_exit);
1096
1097 MODULE_LICENSE("GPL");
1098 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");