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