Merge branch 'linus' into x86/kconfig
[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 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
62
63 #define dprintk(level, args...)                                         \
64 do {                                                                    \
65         if ((debug & level)) {                                          \
66                 printk("%s: %s(): ", KBUILD_MODNAME,                    \
67                        __func__);                                       \
68                 printk(args); }                                         \
69 } while (0)
70
71 enum cinergyt2_ep1_cmd {
72         CINERGYT2_EP1_PID_TABLE_RESET           = 0x01,
73         CINERGYT2_EP1_PID_SETUP                 = 0x02,
74         CINERGYT2_EP1_CONTROL_STREAM_TRANSFER   = 0x03,
75         CINERGYT2_EP1_SET_TUNER_PARAMETERS      = 0x04,
76         CINERGYT2_EP1_GET_TUNER_STATUS          = 0x05,
77         CINERGYT2_EP1_START_SCAN                = 0x06,
78         CINERGYT2_EP1_CONTINUE_SCAN             = 0x07,
79         CINERGYT2_EP1_GET_RC_EVENTS             = 0x08,
80         CINERGYT2_EP1_SLEEP_MODE                = 0x09
81 };
82
83 struct dvbt_set_parameters_msg {
84         uint8_t cmd;
85         __le32 freq;
86         uint8_t bandwidth;
87         __le16 tps;
88         uint8_t flags;
89 } __attribute__((packed));
90
91 struct dvbt_get_status_msg {
92         __le32 freq;
93         uint8_t bandwidth;
94         __le16 tps;
95         uint8_t flags;
96         __le16 gain;
97         uint8_t snr;
98         __le32 viterbi_error_rate;
99         __le32 rs_error_rate;
100         __le32 uncorrected_block_count;
101         uint8_t lock_bits;
102         uint8_t prev_lock_bits;
103 } __attribute__((packed));
104
105 static struct dvb_frontend_info cinergyt2_fe_info = {
106         .name = DRIVER_NAME,
107         .type = FE_OFDM,
108         .frequency_min = 174000000,
109         .frequency_max = 862000000,
110         .frequency_stepsize = 166667,
111         .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
112                 FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
113                 FE_CAN_FEC_AUTO |
114                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
115                 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
116                 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS
117 };
118
119 struct cinergyt2 {
120         struct dvb_demux demux;
121         struct usb_device *udev;
122         struct mutex sem;
123         struct mutex wq_sem;
124         struct dvb_adapter adapter;
125         struct dvb_device *fedev;
126         struct dmxdev dmxdev;
127         struct dvb_net dvbnet;
128
129         int streaming;
130         int sleeping;
131
132         struct dvbt_set_parameters_msg param;
133         struct dvbt_get_status_msg status;
134         struct delayed_work query_work;
135
136         wait_queue_head_t poll_wq;
137         int pending_fe_events;
138         int disconnect_pending;
139         unsigned int uncorrected_block_count;
140         atomic_t inuse;
141
142         void *streambuf;
143         dma_addr_t streambuf_dmahandle;
144         struct urb *stream_urb [STREAM_URB_COUNT];
145
146 #ifdef ENABLE_RC
147         struct input_dev *rc_input_dev;
148         char phys[64];
149         struct delayed_work rc_query_work;
150         int rc_input_event;
151         __le32 rc_last_code;
152         unsigned long last_event_jiffies;
153 #endif
154 };
155
156 enum {
157         CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
158         CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
159         CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
160 };
161
162 struct cinergyt2_rc_event {
163         char type;
164         __le32 value;
165 } __attribute__((packed));
166
167 static const uint32_t rc_keys[] = {
168         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfe01eb04,     KEY_POWER,
169         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfd02eb04,     KEY_1,
170         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfc03eb04,     KEY_2,
171         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfb04eb04,     KEY_3,
172         CINERGYT2_RC_EVENT_TYPE_NEC,    0xfa05eb04,     KEY_4,
173         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf906eb04,     KEY_5,
174         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf807eb04,     KEY_6,
175         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf708eb04,     KEY_7,
176         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf609eb04,     KEY_8,
177         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf50aeb04,     KEY_9,
178         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf30ceb04,     KEY_0,
179         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf40beb04,     KEY_VIDEO,
180         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf20deb04,     KEY_REFRESH,
181         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf10eeb04,     KEY_SELECT,
182         CINERGYT2_RC_EVENT_TYPE_NEC,    0xf00feb04,     KEY_EPG,
183         CINERGYT2_RC_EVENT_TYPE_NEC,    0xef10eb04,     KEY_UP,
184         CINERGYT2_RC_EVENT_TYPE_NEC,    0xeb14eb04,     KEY_DOWN,
185         CINERGYT2_RC_EVENT_TYPE_NEC,    0xee11eb04,     KEY_LEFT,
186         CINERGYT2_RC_EVENT_TYPE_NEC,    0xec13eb04,     KEY_RIGHT,
187         CINERGYT2_RC_EVENT_TYPE_NEC,    0xed12eb04,     KEY_OK,
188         CINERGYT2_RC_EVENT_TYPE_NEC,    0xea15eb04,     KEY_TEXT,
189         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe916eb04,     KEY_INFO,
190         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe817eb04,     KEY_RED,
191         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe718eb04,     KEY_GREEN,
192         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe619eb04,     KEY_YELLOW,
193         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe51aeb04,     KEY_BLUE,
194         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe31ceb04,     KEY_VOLUMEUP,
195         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe11eeb04,     KEY_VOLUMEDOWN,
196         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe21deb04,     KEY_MUTE,
197         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe41beb04,     KEY_CHANNELUP,
198         CINERGYT2_RC_EVENT_TYPE_NEC,    0xe01feb04,     KEY_CHANNELDOWN,
199         CINERGYT2_RC_EVENT_TYPE_NEC,    0xbf40eb04,     KEY_PAUSE,
200         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb34ceb04,     KEY_PLAY,
201         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa758eb04,     KEY_RECORD,
202         CINERGYT2_RC_EVENT_TYPE_NEC,    0xab54eb04,     KEY_PREVIOUS,
203         CINERGYT2_RC_EVENT_TYPE_NEC,    0xb748eb04,     KEY_STOP,
204         CINERGYT2_RC_EVENT_TYPE_NEC,    0xa35ceb04,     KEY_NEXT
205 };
206
207 static int cinergyt2_command (struct cinergyt2 *cinergyt2,
208                               char *send_buf, int send_buf_len,
209                               char *recv_buf, int recv_buf_len)
210 {
211         int actual_len;
212         char dummy;
213         int ret;
214
215         ret = usb_bulk_msg(cinergyt2->udev, usb_sndbulkpipe(cinergyt2->udev, 1),
216                            send_buf, send_buf_len, &actual_len, 1000);
217
218         if (ret)
219                 dprintk(1, "usb_bulk_msg (send) failed, err %i\n", ret);
220
221         if (!recv_buf)
222                 recv_buf = &dummy;
223
224         ret = usb_bulk_msg(cinergyt2->udev, usb_rcvbulkpipe(cinergyt2->udev, 1),
225                            recv_buf, recv_buf_len, &actual_len, 1000);
226
227         if (ret)
228                 dprintk(1, "usb_bulk_msg (read) failed, err %i\n", ret);
229
230         return ret ? ret : actual_len;
231 }
232
233 static void cinergyt2_control_stream_transfer (struct cinergyt2 *cinergyt2, int enable)
234 {
235         char buf [] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
236         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
237 }
238
239 static void cinergyt2_sleep (struct cinergyt2 *cinergyt2, int sleep)
240 {
241         char buf [] = { CINERGYT2_EP1_SLEEP_MODE, sleep ? 1 : 0 };
242         cinergyt2_command(cinergyt2, buf, sizeof(buf), NULL, 0);
243         cinergyt2->sleeping = sleep;
244 }
245
246 static void cinergyt2_stream_irq (struct urb *urb);
247
248 static int cinergyt2_submit_stream_urb (struct cinergyt2 *cinergyt2, struct urb *urb)
249 {
250         int err;
251
252         usb_fill_bulk_urb(urb,
253                           cinergyt2->udev,
254                           usb_rcvbulkpipe(cinergyt2->udev, 0x2),
255                           urb->transfer_buffer,
256                           STREAM_BUF_SIZE,
257                           cinergyt2_stream_irq,
258                           cinergyt2);
259
260         if ((err = usb_submit_urb(urb, GFP_ATOMIC)))
261                 dprintk(1, "urb submission failed (err = %i)!\n", err);
262
263         return err;
264 }
265
266 static void cinergyt2_stream_irq (struct urb *urb)
267 {
268         struct cinergyt2 *cinergyt2 = urb->context;
269
270         if (urb->actual_length > 0)
271                 dvb_dmx_swfilter(&cinergyt2->demux,
272                                  urb->transfer_buffer, urb->actual_length);
273
274         if (cinergyt2->streaming)
275                 cinergyt2_submit_stream_urb(cinergyt2, urb);
276 }
277
278 static void cinergyt2_free_stream_urbs (struct cinergyt2 *cinergyt2)
279 {
280         int i;
281
282         for (i=0; i<STREAM_URB_COUNT; i++)
283                 usb_free_urb(cinergyt2->stream_urb[i]);
284
285         usb_buffer_free(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
286                             cinergyt2->streambuf, cinergyt2->streambuf_dmahandle);
287 }
288
289 static int cinergyt2_alloc_stream_urbs (struct cinergyt2 *cinergyt2)
290 {
291         int i;
292
293         cinergyt2->streambuf = usb_buffer_alloc(cinergyt2->udev, STREAM_URB_COUNT*STREAM_BUF_SIZE,
294                                               GFP_KERNEL, &cinergyt2->streambuf_dmahandle);
295         if (!cinergyt2->streambuf) {
296                 dprintk(1, "failed to alloc consistent stream memory area, bailing out!\n");
297                 return -ENOMEM;
298         }
299
300         memset(cinergyt2->streambuf, 0, STREAM_URB_COUNT*STREAM_BUF_SIZE);
301
302         for (i=0; i<STREAM_URB_COUNT; i++) {
303                 struct urb *urb;
304
305                 if (!(urb = usb_alloc_urb(0, GFP_ATOMIC))) {
306                         dprintk(1, "failed to alloc consistent stream urbs, bailing out!\n");
307                         cinergyt2_free_stream_urbs(cinergyt2);
308                         return -ENOMEM;
309                 }
310
311                 urb->transfer_buffer = cinergyt2->streambuf + i * STREAM_BUF_SIZE;
312                 urb->transfer_buffer_length = STREAM_BUF_SIZE;
313
314                 cinergyt2->stream_urb[i] = urb;
315         }
316
317         return 0;
318 }
319
320 static void cinergyt2_stop_stream_xfer (struct cinergyt2 *cinergyt2)
321 {
322         int i;
323
324         cinergyt2_control_stream_transfer(cinergyt2, 0);
325
326         for (i=0; i<STREAM_URB_COUNT; i++)
327                 usb_kill_urb(cinergyt2->stream_urb[i]);
328 }
329
330 static int cinergyt2_start_stream_xfer (struct cinergyt2 *cinergyt2)
331 {
332         int i, err;
333
334         for (i=0; i<STREAM_URB_COUNT; i++) {
335                 if ((err = cinergyt2_submit_stream_urb(cinergyt2, cinergyt2->stream_urb[i]))) {
336                         cinergyt2_stop_stream_xfer(cinergyt2);
337                         dprintk(1, "failed urb submission (%i: err = %i)!\n", i, err);
338                         return err;
339                 }
340         }
341
342         cinergyt2_control_stream_transfer(cinergyt2, 1);
343         return 0;
344 }
345
346 static int cinergyt2_start_feed(struct dvb_demux_feed *dvbdmxfeed)
347 {
348         struct dvb_demux *demux = dvbdmxfeed->demux;
349         struct cinergyt2 *cinergyt2 = demux->priv;
350
351         if (cinergyt2->disconnect_pending)
352                 return -EAGAIN;
353         if (mutex_lock_interruptible(&cinergyt2->sem))
354                 return -ERESTARTSYS;
355
356         if (cinergyt2->streaming == 0)
357                 cinergyt2_start_stream_xfer(cinergyt2);
358
359         cinergyt2->streaming++;
360         mutex_unlock(&cinergyt2->sem);
361         return 0;
362 }
363
364 static int cinergyt2_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
365 {
366         struct dvb_demux *demux = dvbdmxfeed->demux;
367         struct cinergyt2 *cinergyt2 = demux->priv;
368
369         if (cinergyt2->disconnect_pending)
370                 return -EAGAIN;
371         if (mutex_lock_interruptible(&cinergyt2->sem))
372                 return -ERESTARTSYS;
373
374         if (--cinergyt2->streaming == 0)
375                 cinergyt2_stop_stream_xfer(cinergyt2);
376
377         mutex_unlock(&cinergyt2->sem);
378         return 0;
379 }
380
381 /**
382  *  convert linux-dvb frontend parameter set into TPS.
383  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
384  *
385  *  This function is probably reusable and may better get placed in a support
386  *  library.
387  *
388  *  We replace errornous fields by default TPS fields (the ones with value 0).
389  */
390 static uint16_t compute_tps (struct dvb_frontend_parameters *p)
391 {
392         struct dvb_ofdm_parameters *op = &p->u.ofdm;
393         uint16_t tps = 0;
394
395         switch (op->code_rate_HP) {
396                 case FEC_2_3:
397                         tps |= (1 << 7);
398                         break;
399                 case FEC_3_4:
400                         tps |= (2 << 7);
401                         break;
402                 case FEC_5_6:
403                         tps |= (3 << 7);
404                         break;
405                 case FEC_7_8:
406                         tps |= (4 << 7);
407                         break;
408                 case FEC_1_2:
409                 case FEC_AUTO:
410                 default:
411                         /* tps |= (0 << 7) */;
412         }
413
414         switch (op->code_rate_LP) {
415                 case FEC_2_3:
416                         tps |= (1 << 4);
417                         break;
418                 case FEC_3_4:
419                         tps |= (2 << 4);
420                         break;
421                 case FEC_5_6:
422                         tps |= (3 << 4);
423                         break;
424                 case FEC_7_8:
425                         tps |= (4 << 4);
426                         break;
427                 case FEC_1_2:
428                 case FEC_AUTO:
429                 default:
430                         /* tps |= (0 << 4) */;
431         }
432
433         switch (op->constellation) {
434                 case QAM_16:
435                         tps |= (1 << 13);
436                         break;
437                 case QAM_64:
438                         tps |= (2 << 13);
439                         break;
440                 case QPSK:
441                 default:
442                         /* tps |= (0 << 13) */;
443         }
444
445         switch (op->transmission_mode) {
446                 case TRANSMISSION_MODE_8K:
447                         tps |= (1 << 0);
448                         break;
449                 case TRANSMISSION_MODE_2K:
450                 default:
451                         /* tps |= (0 << 0) */;
452         }
453
454         switch (op->guard_interval) {
455                 case GUARD_INTERVAL_1_16:
456                         tps |= (1 << 2);
457                         break;
458                 case GUARD_INTERVAL_1_8:
459                         tps |= (2 << 2);
460                         break;
461                 case GUARD_INTERVAL_1_4:
462                         tps |= (3 << 2);
463                         break;
464                 case GUARD_INTERVAL_1_32:
465                 default:
466                         /* tps |= (0 << 2) */;
467         }
468
469         switch (op->hierarchy_information) {
470                 case HIERARCHY_1:
471                         tps |= (1 << 10);
472                         break;
473                 case HIERARCHY_2:
474                         tps |= (2 << 10);
475                         break;
476                 case HIERARCHY_4:
477                         tps |= (3 << 10);
478                         break;
479                 case HIERARCHY_NONE:
480                 default:
481                         /* tps |= (0 << 10) */;
482         }
483
484         return tps;
485 }
486
487 static int cinergyt2_open (struct inode *inode, struct file *file)
488 {
489         struct dvb_device *dvbdev = file->private_data;
490         struct cinergyt2 *cinergyt2 = dvbdev->priv;
491         int err = -EAGAIN;
492
493         if (cinergyt2->disconnect_pending)
494                 goto out;
495         err = mutex_lock_interruptible(&cinergyt2->wq_sem);
496         if (err)
497                 goto out;
498
499         err = mutex_lock_interruptible(&cinergyt2->sem);
500         if (err)
501                 goto out_unlock1;
502
503         if ((err = dvb_generic_open(inode, file)))
504                 goto out_unlock2;
505
506         if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
507                 cinergyt2_sleep(cinergyt2, 0);
508                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
509         }
510
511         atomic_inc(&cinergyt2->inuse);
512
513 out_unlock2:
514         mutex_unlock(&cinergyt2->sem);
515 out_unlock1:
516         mutex_unlock(&cinergyt2->wq_sem);
517 out:
518         return err;
519 }
520
521 static void cinergyt2_unregister(struct cinergyt2 *cinergyt2)
522 {
523         dvb_net_release(&cinergyt2->dvbnet);
524         dvb_dmxdev_release(&cinergyt2->dmxdev);
525         dvb_dmx_release(&cinergyt2->demux);
526         dvb_unregister_device(cinergyt2->fedev);
527         dvb_unregister_adapter(&cinergyt2->adapter);
528
529         cinergyt2_free_stream_urbs(cinergyt2);
530         kfree(cinergyt2);
531 }
532
533 static int cinergyt2_release (struct inode *inode, struct file *file)
534 {
535         struct dvb_device *dvbdev = file->private_data;
536         struct cinergyt2 *cinergyt2 = dvbdev->priv;
537
538         mutex_lock(&cinergyt2->wq_sem);
539
540         if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
541                 cancel_rearming_delayed_work(&cinergyt2->query_work);
542
543                 mutex_lock(&cinergyt2->sem);
544                 cinergyt2_sleep(cinergyt2, 1);
545                 mutex_unlock(&cinergyt2->sem);
546         }
547
548         mutex_unlock(&cinergyt2->wq_sem);
549
550         if (atomic_dec_and_test(&cinergyt2->inuse) && cinergyt2->disconnect_pending) {
551                 warn("delayed unregister in release");
552                 cinergyt2_unregister(cinergyt2);
553         }
554
555         return dvb_generic_release(inode, file);
556 }
557
558 static unsigned int cinergyt2_poll (struct file *file, struct poll_table_struct *wait)
559 {
560         struct dvb_device *dvbdev = file->private_data;
561         struct cinergyt2 *cinergyt2 = dvbdev->priv;
562         unsigned int mask = 0;
563
564         if (cinergyt2->disconnect_pending)
565                 return -EAGAIN;
566         if (mutex_lock_interruptible(&cinergyt2->sem))
567                 return -ERESTARTSYS;
568
569         poll_wait(file, &cinergyt2->poll_wq, wait);
570
571         if (cinergyt2->pending_fe_events != 0)
572                 mask |= (POLLIN | POLLRDNORM | POLLPRI);
573
574         mutex_unlock(&cinergyt2->sem);
575
576         return mask;
577 }
578
579
580 static int cinergyt2_ioctl (struct inode *inode, struct file *file,
581                      unsigned cmd, unsigned long arg)
582 {
583         struct dvb_device *dvbdev = file->private_data;
584         struct cinergyt2 *cinergyt2 = dvbdev->priv;
585         struct dvbt_get_status_msg *stat = &cinergyt2->status;
586         fe_status_t status = 0;
587
588         switch (cmd) {
589         case FE_GET_INFO:
590                 return copy_to_user((void __user*) arg, &cinergyt2_fe_info,
591                                     sizeof(struct dvb_frontend_info));
592
593         case FE_READ_STATUS:
594                 if (0xffff - le16_to_cpu(stat->gain) > 30)
595                         status |= FE_HAS_SIGNAL;
596                 if (stat->lock_bits & (1 << 6))
597                         status |= FE_HAS_LOCK;
598                 if (stat->lock_bits & (1 << 5))
599                         status |= FE_HAS_SYNC;
600                 if (stat->lock_bits & (1 << 4))
601                         status |= FE_HAS_CARRIER;
602                 if (stat->lock_bits & (1 << 1))
603                         status |= FE_HAS_VITERBI;
604
605                 return copy_to_user((void  __user*) arg, &status, sizeof(status));
606
607         case FE_READ_BER:
608                 return put_user(le32_to_cpu(stat->viterbi_error_rate),
609                                 (__u32 __user *) arg);
610
611         case FE_READ_SIGNAL_STRENGTH:
612                 return put_user(0xffff - le16_to_cpu(stat->gain),
613                                 (__u16 __user *) arg);
614
615         case FE_READ_SNR:
616                 return put_user((stat->snr << 8) | stat->snr,
617                                 (__u16 __user *) arg);
618
619         case FE_READ_UNCORRECTED_BLOCKS:
620         {
621                 uint32_t unc_count;
622
623                 if (mutex_lock_interruptible(&cinergyt2->sem))
624                         return -ERESTARTSYS;
625                 unc_count = cinergyt2->uncorrected_block_count;
626                 cinergyt2->uncorrected_block_count = 0;
627                 mutex_unlock(&cinergyt2->sem);
628
629                 /* UNC are already converted to host byte order... */
630                 return put_user(unc_count,(__u32 __user *) arg);
631         }
632         case FE_SET_FRONTEND:
633         {
634                 struct dvbt_set_parameters_msg *param = &cinergyt2->param;
635                 struct dvb_frontend_parameters p;
636                 int err;
637
638                 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
639                         return -EPERM;
640
641                 if (copy_from_user(&p, (void  __user*) arg, sizeof(p)))
642                         return -EFAULT;
643
644                 if (cinergyt2->disconnect_pending)
645                         return -EAGAIN;
646                 if (mutex_lock_interruptible(&cinergyt2->sem))
647                         return -ERESTARTSYS;
648
649                 param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
650                 param->tps = cpu_to_le16(compute_tps(&p));
651                 param->freq = cpu_to_le32(p.frequency / 1000);
652                 param->bandwidth = 8 - p.u.ofdm.bandwidth - BANDWIDTH_8_MHZ;
653
654                 stat->lock_bits = 0;
655                 cinergyt2->pending_fe_events++;
656                 wake_up_interruptible(&cinergyt2->poll_wq);
657
658                 err = cinergyt2_command(cinergyt2,
659                                         (char *) param, sizeof(*param),
660                                         NULL, 0);
661
662                 mutex_unlock(&cinergyt2->sem);
663
664                 return (err < 0) ? err : 0;
665         }
666
667         case FE_GET_FRONTEND:
668                 /**
669                  *  trivial to implement (see struct dvbt_get_status_msg).
670                  *  equivalent to FE_READ ioctls, but needs
671                  *  TPS -> linux-dvb parameter set conversion. Feel free
672                  *  to implement this and send us a patch if you need this
673                  *  functionality.
674                  */
675                 break;
676
677         case FE_GET_EVENT:
678         {
679                 /**
680                  *  for now we only fill the status field. the parameters
681                  *  are trivial to fill as soon FE_GET_FRONTEND is done.
682                  */
683                 struct dvb_frontend_event __user *e = (void __user *) arg;
684                 if (cinergyt2->pending_fe_events == 0) {
685                         if (file->f_flags & O_NONBLOCK)
686                                 return -EWOULDBLOCK;
687                         wait_event_interruptible(cinergyt2->poll_wq,
688                                                  cinergyt2->pending_fe_events > 0);
689                 }
690                 cinergyt2->pending_fe_events = 0;
691                 return cinergyt2_ioctl(inode, file, FE_READ_STATUS,
692                                         (unsigned long) &e->status);
693         }
694
695         default:
696                 ;
697         }
698
699         return -EINVAL;
700 }
701
702 static int cinergyt2_mmap(struct file *file, struct vm_area_struct *vma)
703 {
704         struct dvb_device *dvbdev = file->private_data;
705         struct cinergyt2 *cinergyt2 = dvbdev->priv;
706         int ret = 0;
707
708         lock_kernel();
709
710         if (vma->vm_flags & (VM_WRITE | VM_EXEC)) {
711                 ret = -EPERM;
712                 goto bailout;
713         }
714
715         if (vma->vm_end > vma->vm_start + STREAM_URB_COUNT * STREAM_BUF_SIZE) {
716                 ret = -EINVAL;
717                 goto bailout;
718         }
719
720         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
721         vma->vm_file = file;
722
723         ret = remap_pfn_range(vma, vma->vm_start,
724                               virt_to_phys(cinergyt2->streambuf) >> PAGE_SHIFT,
725                               vma->vm_end - vma->vm_start,
726                               vma->vm_page_prot) ? -EAGAIN : 0;
727 bailout:
728         unlock_kernel();
729         return ret;
730 }
731
732 static struct file_operations cinergyt2_fops = {
733         .owner          = THIS_MODULE,
734         .ioctl          = cinergyt2_ioctl,
735         .poll           = cinergyt2_poll,
736         .open           = cinergyt2_open,
737         .release        = cinergyt2_release,
738         .mmap           = cinergyt2_mmap
739 };
740
741 static struct dvb_device cinergyt2_fe_template = {
742         .users = ~0,
743         .writers = 1,
744         .readers = (~0)-1,
745         .fops = &cinergyt2_fops
746 };
747
748 #ifdef ENABLE_RC
749
750 static void cinergyt2_query_rc (struct work_struct *work)
751 {
752         struct cinergyt2 *cinergyt2 =
753                 container_of(work, struct cinergyt2, rc_query_work.work);
754         char buf[1] = { CINERGYT2_EP1_GET_RC_EVENTS };
755         struct cinergyt2_rc_event rc_events[12];
756         int n, len, i;
757
758         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
759                 return;
760
761         len = cinergyt2_command(cinergyt2, buf, sizeof(buf),
762                                 (char *) rc_events, sizeof(rc_events));
763         if (len < 0)
764                 goto out;
765         if (len == 0) {
766                 if (time_after(jiffies, cinergyt2->last_event_jiffies +
767                                msecs_to_jiffies(150))) {
768                         /* stop key repeat */
769                         if (cinergyt2->rc_input_event != KEY_MAX) {
770                                 dprintk(1, "rc_input_event=%d Up\n", cinergyt2->rc_input_event);
771                                 input_report_key(cinergyt2->rc_input_dev,
772                                                  cinergyt2->rc_input_event, 0);
773                                 input_sync(cinergyt2->rc_input_dev);
774                                 cinergyt2->rc_input_event = KEY_MAX;
775                         }
776                         cinergyt2->rc_last_code = cpu_to_le32(~0);
777                 }
778                 goto out;
779         }
780         cinergyt2->last_event_jiffies = jiffies;
781
782         for (n = 0; n < (len / sizeof(rc_events[0])); n++) {
783                 dprintk(1, "rc_events[%d].value = %x, type=%x\n",
784                         n, le32_to_cpu(rc_events[n].value), rc_events[n].type);
785
786                 if (rc_events[n].type == CINERGYT2_RC_EVENT_TYPE_NEC &&
787                     rc_events[n].value == cpu_to_le32(~0)) {
788                         /* keyrepeat bit -> just repeat last rc_input_event */
789                 } else {
790                         cinergyt2->rc_input_event = KEY_MAX;
791                         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3) {
792                                 if (rc_keys[i + 0] == rc_events[n].type &&
793                                     rc_keys[i + 1] == le32_to_cpu(rc_events[n].value)) {
794                                         cinergyt2->rc_input_event = rc_keys[i + 2];
795                                         break;
796                                 }
797                         }
798                 }
799
800                 if (cinergyt2->rc_input_event != KEY_MAX) {
801                         if (rc_events[n].value == cinergyt2->rc_last_code &&
802                             cinergyt2->rc_last_code != cpu_to_le32(~0)) {
803                                 /* emit a key-up so the double event is recognized */
804                                 dprintk(1, "rc_input_event=%d UP\n", cinergyt2->rc_input_event);
805                                 input_report_key(cinergyt2->rc_input_dev,
806                                                  cinergyt2->rc_input_event, 0);
807                         }
808                         dprintk(1, "rc_input_event=%d\n", cinergyt2->rc_input_event);
809                         input_report_key(cinergyt2->rc_input_dev,
810                                          cinergyt2->rc_input_event, 1);
811                         input_sync(cinergyt2->rc_input_dev);
812                         cinergyt2->rc_last_code = rc_events[n].value;
813                 }
814         }
815
816 out:
817         schedule_delayed_work(&cinergyt2->rc_query_work,
818                               msecs_to_jiffies(RC_QUERY_INTERVAL));
819
820         mutex_unlock(&cinergyt2->sem);
821 }
822
823 static int cinergyt2_register_rc(struct cinergyt2 *cinergyt2)
824 {
825         struct input_dev *input_dev;
826         int i;
827         int err;
828
829         input_dev = input_allocate_device();
830         if (!input_dev)
831                 return -ENOMEM;
832
833         usb_make_path(cinergyt2->udev, cinergyt2->phys, sizeof(cinergyt2->phys));
834         strlcat(cinergyt2->phys, "/input0", sizeof(cinergyt2->phys));
835         cinergyt2->rc_input_event = KEY_MAX;
836         cinergyt2->rc_last_code = cpu_to_le32(~0);
837         INIT_DELAYED_WORK(&cinergyt2->rc_query_work, cinergyt2_query_rc);
838
839         input_dev->name = DRIVER_NAME " remote control";
840         input_dev->phys = cinergyt2->phys;
841         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
842         for (i = 0; i < ARRAY_SIZE(rc_keys); i += 3)
843                 set_bit(rc_keys[i + 2], input_dev->keybit);
844         input_dev->keycodesize = 0;
845         input_dev->keycodemax = 0;
846         input_dev->id.bustype = BUS_USB;
847         input_dev->id.vendor = le16_to_cpu(cinergyt2->udev->descriptor.idVendor);
848         input_dev->id.product = le16_to_cpu(cinergyt2->udev->descriptor.idProduct);
849         input_dev->id.version = 1;
850         input_dev->dev.parent = &cinergyt2->udev->dev;
851
852         err = input_register_device(input_dev);
853         if (err) {
854                 input_free_device(input_dev);
855                 return err;
856         }
857
858         cinergyt2->rc_input_dev = input_dev;
859         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
860
861         return 0;
862 }
863
864 static void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2)
865 {
866         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
867         input_unregister_device(cinergyt2->rc_input_dev);
868 }
869
870 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2)
871 {
872         cancel_rearming_delayed_work(&cinergyt2->rc_query_work);
873 }
874
875 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2)
876 {
877         schedule_delayed_work(&cinergyt2->rc_query_work, HZ/2);
878 }
879
880 #else
881
882 static inline int cinergyt2_register_rc(struct cinergyt2 *cinergyt2) { return 0; }
883 static inline void cinergyt2_unregister_rc(struct cinergyt2 *cinergyt2) { }
884 static inline void cinergyt2_suspend_rc(struct cinergyt2 *cinergyt2) { }
885 static inline void cinergyt2_resume_rc(struct cinergyt2 *cinergyt2) { }
886
887 #endif /* ENABLE_RC */
888
889 static void cinergyt2_query (struct work_struct *work)
890 {
891         struct cinergyt2 *cinergyt2 =
892                 container_of(work, struct cinergyt2, query_work.work);
893         char cmd [] = { CINERGYT2_EP1_GET_TUNER_STATUS };
894         struct dvbt_get_status_msg *s = &cinergyt2->status;
895         uint8_t lock_bits;
896
897         if (cinergyt2->disconnect_pending || mutex_lock_interruptible(&cinergyt2->sem))
898                 return;
899
900         lock_bits = s->lock_bits;
901
902         cinergyt2_command(cinergyt2, cmd, sizeof(cmd), (char *) s, sizeof(*s));
903
904         cinergyt2->uncorrected_block_count +=
905                 le32_to_cpu(s->uncorrected_block_count);
906
907         if (lock_bits != s->lock_bits) {
908                 wake_up_interruptible(&cinergyt2->poll_wq);
909                 cinergyt2->pending_fe_events++;
910         }
911
912         schedule_delayed_work(&cinergyt2->query_work,
913                               msecs_to_jiffies(QUERY_INTERVAL));
914
915         mutex_unlock(&cinergyt2->sem);
916 }
917
918 static int cinergyt2_probe (struct usb_interface *intf,
919                   const struct usb_device_id *id)
920 {
921         struct cinergyt2 *cinergyt2;
922         int err;
923
924         if (!(cinergyt2 = kzalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
925                 dprintk(1, "out of memory?!?\n");
926                 return -ENOMEM;
927         }
928
929         usb_set_intfdata (intf, (void *) cinergyt2);
930
931         mutex_init(&cinergyt2->sem);
932         mutex_init(&cinergyt2->wq_sem);
933         init_waitqueue_head (&cinergyt2->poll_wq);
934         INIT_DELAYED_WORK(&cinergyt2->query_work, cinergyt2_query);
935
936         cinergyt2->udev = interface_to_usbdev(intf);
937         cinergyt2->param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
938
939         if (cinergyt2_alloc_stream_urbs (cinergyt2) < 0) {
940                 dprintk(1, "unable to allocate stream urbs\n");
941                 kfree(cinergyt2);
942                 return -ENOMEM;
943         }
944
945         err = dvb_register_adapter(&cinergyt2->adapter, DRIVER_NAME,
946                                    THIS_MODULE, &cinergyt2->udev->dev,
947                                    adapter_nr);
948         if (err < 0) {
949                 kfree(cinergyt2);
950                 return err;
951         }
952
953         cinergyt2->demux.priv = cinergyt2;
954         cinergyt2->demux.filternum = 256;
955         cinergyt2->demux.feednum = 256;
956         cinergyt2->demux.start_feed = cinergyt2_start_feed;
957         cinergyt2->demux.stop_feed = cinergyt2_stop_feed;
958         cinergyt2->demux.dmx.capabilities = DMX_TS_FILTERING |
959                                             DMX_SECTION_FILTERING |
960                                             DMX_MEMORY_BASED_FILTERING;
961
962         if ((err = dvb_dmx_init(&cinergyt2->demux)) < 0) {
963                 dprintk(1, "dvb_dmx_init() failed (err = %d)\n", err);
964                 goto bailout;
965         }
966
967         cinergyt2->dmxdev.filternum = cinergyt2->demux.filternum;
968         cinergyt2->dmxdev.demux = &cinergyt2->demux.dmx;
969         cinergyt2->dmxdev.capabilities = 0;
970
971         if ((err = dvb_dmxdev_init(&cinergyt2->dmxdev, &cinergyt2->adapter)) < 0) {
972                 dprintk(1, "dvb_dmxdev_init() failed (err = %d)\n", err);
973                 goto bailout;
974         }
975
976         if (dvb_net_init(&cinergyt2->adapter, &cinergyt2->dvbnet, &cinergyt2->demux.dmx))
977                 dprintk(1, "dvb_net_init() failed!\n");
978
979         dvb_register_device(&cinergyt2->adapter, &cinergyt2->fedev,
980                             &cinergyt2_fe_template, cinergyt2,
981                             DVB_DEVICE_FRONTEND);
982
983         err = cinergyt2_register_rc(cinergyt2);
984         if (err)
985                 goto bailout;
986
987         return 0;
988
989 bailout:
990         dvb_net_release(&cinergyt2->dvbnet);
991         dvb_dmxdev_release(&cinergyt2->dmxdev);
992         dvb_dmx_release(&cinergyt2->demux);
993         dvb_unregister_adapter(&cinergyt2->adapter);
994         cinergyt2_free_stream_urbs(cinergyt2);
995         kfree(cinergyt2);
996         return -ENOMEM;
997 }
998
999 static void cinergyt2_disconnect (struct usb_interface *intf)
1000 {
1001         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1002
1003         cinergyt2_unregister_rc(cinergyt2);
1004         cancel_rearming_delayed_work(&cinergyt2->query_work);
1005         wake_up_interruptible(&cinergyt2->poll_wq);
1006
1007         cinergyt2->demux.dmx.close(&cinergyt2->demux.dmx);
1008         cinergyt2->disconnect_pending = 1;
1009
1010         if (!atomic_read(&cinergyt2->inuse))
1011                 cinergyt2_unregister(cinergyt2);
1012 }
1013
1014 static int cinergyt2_suspend (struct usb_interface *intf, pm_message_t state)
1015 {
1016         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1017
1018         if (cinergyt2->disconnect_pending)
1019                 return -EAGAIN;
1020         if (mutex_lock_interruptible(&cinergyt2->wq_sem))
1021                 return -ERESTARTSYS;
1022
1023         cinergyt2_suspend_rc(cinergyt2);
1024         cancel_rearming_delayed_work(&cinergyt2->query_work);
1025
1026         mutex_lock(&cinergyt2->sem);
1027         if (cinergyt2->streaming)
1028                 cinergyt2_stop_stream_xfer(cinergyt2);
1029         cinergyt2_sleep(cinergyt2, 1);
1030         mutex_unlock(&cinergyt2->sem);
1031
1032         mutex_unlock(&cinergyt2->wq_sem);
1033
1034         return 0;
1035 }
1036
1037 static int cinergyt2_resume (struct usb_interface *intf)
1038 {
1039         struct cinergyt2 *cinergyt2 = usb_get_intfdata (intf);
1040         struct dvbt_set_parameters_msg *param = &cinergyt2->param;
1041         int err = -EAGAIN;
1042
1043         if (cinergyt2->disconnect_pending)
1044                 goto out;
1045         err = mutex_lock_interruptible(&cinergyt2->wq_sem);
1046         if (err)
1047                 goto out;
1048
1049         err = mutex_lock_interruptible(&cinergyt2->sem);
1050         if (err)
1051                 goto out_unlock1;
1052
1053         if (!cinergyt2->sleeping) {
1054                 cinergyt2_sleep(cinergyt2, 0);
1055                 cinergyt2_command(cinergyt2, (char *) param, sizeof(*param), NULL, 0);
1056                 if (cinergyt2->streaming)
1057                         cinergyt2_start_stream_xfer(cinergyt2);
1058                 schedule_delayed_work(&cinergyt2->query_work, HZ/2);
1059         }
1060
1061         cinergyt2_resume_rc(cinergyt2);
1062
1063         mutex_unlock(&cinergyt2->sem);
1064 out_unlock1:
1065         mutex_unlock(&cinergyt2->wq_sem);
1066 out:
1067         return err;
1068 }
1069
1070 static const struct usb_device_id cinergyt2_table [] __devinitdata = {
1071         { USB_DEVICE(0x0ccd, 0x0038) },
1072         { 0 }
1073 };
1074
1075 MODULE_DEVICE_TABLE(usb, cinergyt2_table);
1076
1077 static struct usb_driver cinergyt2_driver = {
1078         .name   = "cinergyT2",
1079         .probe  = cinergyt2_probe,
1080         .disconnect     = cinergyt2_disconnect,
1081         .suspend        = cinergyt2_suspend,
1082         .resume         = cinergyt2_resume,
1083         .id_table       = cinergyt2_table
1084 };
1085
1086 static int __init cinergyt2_init (void)
1087 {
1088         int err;
1089
1090         if ((err = usb_register(&cinergyt2_driver)) < 0)
1091                 dprintk(1, "usb_register() failed! (err %i)\n", err);
1092
1093         return err;
1094 }
1095
1096 static void __exit cinergyt2_exit (void)
1097 {
1098         usb_deregister(&cinergyt2_driver);
1099 }
1100
1101 module_init (cinergyt2_init);
1102 module_exit (cinergyt2_exit);
1103
1104 MODULE_LICENSE("GPL");
1105 MODULE_AUTHOR("Holger Waechtler, Daniel Mack");