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V4L/DVB (6323): V4L: cinergyT2, remove bad usage of ERESTARTSYS
[deliverable/linux.git] / 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");
Linux kernel - Deliverables
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