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14#include <linux/module.h>
15#include <linux/delay.h>
16#include <linux/sched.h>
17#include <linux/spinlock.h>
18#include <linux/unistd.h>
19#include <linux/time.h>
20#include <linux/mm.h>
21#include <linux/vmalloc.h>
22#include <linux/device.h>
23#include <linux/i2c.h>
24#include <linux/firmware.h>
25#include <linux/mutex.h>
26#include <linux/uaccess.h>
27#include <linux/slab.h>
28#include <linux/videodev2.h>
29#include <media/tuner.h>
30#include <media/v4l2-common.h>
31#include <media/v4l2-event.h>
32
33#include "go7007-priv.h"
34
35
36
37
38
39
40
41int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data)
42{
43 go->interrupt_available = 0;
44 go->hpi_ops->read_interrupt(go);
45 if (wait_event_timeout(go->interrupt_waitq,
46 go->interrupt_available, 5*HZ) < 0) {
47 v4l2_err(&go->v4l2_dev, "timeout waiting for read interrupt\n");
48 return -1;
49 }
50 if (!go->interrupt_available)
51 return -1;
52 go->interrupt_available = 0;
53 *value = go->interrupt_value & 0xfffe;
54 *data = go->interrupt_data;
55 return 0;
56}
57EXPORT_SYMBOL(go7007_read_interrupt);
58
59
60
61
62
63
64int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data)
65{
66 int count = 100;
67 u16 value;
68
69 if (go7007_write_interrupt(go, 0x0010, addr) < 0)
70 return -EIO;
71 while (count-- > 0) {
72 if (go7007_read_interrupt(go, &value, data) == 0 &&
73 value == 0xa000)
74 return 0;
75 }
76 return -EIO;
77}
78EXPORT_SYMBOL(go7007_read_addr);
79
80
81
82
83
84
85
86static int go7007_load_encoder(struct go7007 *go)
87{
88 const struct firmware *fw_entry;
89 char fw_name[] = "go7007/go7007fw.bin";
90 void *bounce;
91 int fw_len, rv = 0;
92 u16 intr_val, intr_data;
93
94 if (go->boot_fw == NULL) {
95 if (request_firmware(&fw_entry, fw_name, go->dev)) {
96 v4l2_err(go, "unable to load firmware from file \"%s\"\n", fw_name);
97 return -1;
98 }
99 if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) {
100 v4l2_err(go, "file \"%s\" does not appear to be go7007 firmware\n", fw_name);
101 release_firmware(fw_entry);
102 return -1;
103 }
104 fw_len = fw_entry->size - 16;
105 bounce = kmemdup(fw_entry->data + 16, fw_len, GFP_KERNEL);
106 if (bounce == NULL) {
107 v4l2_err(go, "unable to allocate %d bytes for firmware transfer\n", fw_len);
108 release_firmware(fw_entry);
109 return -1;
110 }
111 release_firmware(fw_entry);
112 go->boot_fw_len = fw_len;
113 go->boot_fw = bounce;
114 }
115 if (go7007_interface_reset(go) < 0 ||
116 go7007_send_firmware(go, go->boot_fw, go->boot_fw_len) < 0 ||
117 go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
118 (intr_val & ~0x1) != 0x5a5a) {
119 v4l2_err(go, "error transferring firmware\n");
120 rv = -1;
121 }
122 return rv;
123}
124
125MODULE_FIRMWARE("go7007/go7007fw.bin");
126
127
128
129
130
131
132
133
134int go7007_boot_encoder(struct go7007 *go, int init_i2c)
135{
136 int ret;
137
138 mutex_lock(&go->hw_lock);
139 ret = go7007_load_encoder(go);
140 mutex_unlock(&go->hw_lock);
141 if (ret < 0)
142 return -1;
143 if (!init_i2c)
144 return 0;
145 if (go7007_i2c_init(go) < 0)
146 return -1;
147 go->i2c_adapter_online = 1;
148 return 0;
149}
150EXPORT_SYMBOL(go7007_boot_encoder);
151
152
153
154
155
156
157
158
159static int go7007_init_encoder(struct go7007 *go)
160{
161 if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) {
162 go7007_write_addr(go, 0x1000, 0x0811);
163 go7007_write_addr(go, 0x1000, 0x0c11);
164 }
165 switch (go->board_id) {
166 case GO7007_BOARDID_MATRIX_REV:
167
168 go7007_write_addr(go, 0x3c82, 0x0001);
169 go7007_write_addr(go, 0x3c80, 0x00fe);
170 break;
171 case GO7007_BOARDID_ADLINK_MPG24:
172
173 go7007_write_addr(go, 0x3c82, 0x0000);
174 go7007_write_addr(go, 0x3c80, 0x00df);
175 break;
176 case GO7007_BOARDID_ADS_USBAV_709:
177
178
179
180 go7007_write_addr(go, 0x3c82, 0x000d);
181 go7007_write_addr(go, 0x3c80, 0x00f2);
182 break;
183 }
184 return 0;
185}
186
187
188
189
190
191
192
193int go7007_reset_encoder(struct go7007 *go)
194{
195 if (go7007_load_encoder(go) < 0)
196 return -1;
197 return go7007_init_encoder(go);
198}
199
200
201
202
203static int init_i2c_module(struct i2c_adapter *adapter, const struct go_i2c *const i2c)
204{
205 struct go7007 *go = i2c_get_adapdata(adapter);
206 struct v4l2_device *v4l2_dev = &go->v4l2_dev;
207 struct v4l2_subdev *sd;
208 struct i2c_board_info info;
209
210 memset(&info, 0, sizeof(info));
211 strlcpy(info.type, i2c->type, sizeof(info.type));
212 info.addr = i2c->addr;
213 info.flags = i2c->flags;
214
215 sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, NULL);
216 if (sd) {
217 if (i2c->is_video)
218 go->sd_video = sd;
219 if (i2c->is_audio)
220 go->sd_audio = sd;
221 return 0;
222 }
223
224 pr_info("go7007: probing for module i2c:%s failed\n", i2c->type);
225 return -EINVAL;
226}
227
228
229
230
231
232
233static void go7007_remove(struct v4l2_device *v4l2_dev)
234{
235 struct go7007 *go = container_of(v4l2_dev, struct go7007, v4l2_dev);
236
237 v4l2_device_unregister(v4l2_dev);
238 if (go->hpi_ops->release)
239 go->hpi_ops->release(go);
240 if (go->i2c_adapter_online) {
241 i2c_del_adapter(&go->i2c_adapter);
242 go->i2c_adapter_online = 0;
243 }
244
245 kfree(go->boot_fw);
246 go7007_v4l2_remove(go);
247 kfree(go);
248}
249
250
251
252
253
254
255
256
257
258int go7007_register_encoder(struct go7007 *go, unsigned num_i2c_devs)
259{
260 int i, ret;
261
262 dev_info(go->dev, "go7007: registering new %s\n", go->name);
263
264 go->v4l2_dev.release = go7007_remove;
265 ret = v4l2_device_register(go->dev, &go->v4l2_dev);
266 if (ret < 0)
267 return ret;
268
269 mutex_lock(&go->hw_lock);
270 ret = go7007_init_encoder(go);
271 mutex_unlock(&go->hw_lock);
272 if (ret < 0)
273 return ret;
274
275 ret = go7007_v4l2_ctrl_init(go);
276 if (ret < 0)
277 return ret;
278
279 if (!go->i2c_adapter_online &&
280 go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) {
281 ret = go7007_i2c_init(go);
282 if (ret < 0)
283 return ret;
284 go->i2c_adapter_online = 1;
285 }
286 if (go->i2c_adapter_online) {
287 if (go->board_id == GO7007_BOARDID_ADS_USBAV_709) {
288
289 go7007_write_addr(go, 0x3c82, 0x0009);
290 msleep(50);
291 go7007_write_addr(go, 0x3c82, 0x000d);
292 }
293 for (i = 0; i < num_i2c_devs; ++i)
294 init_i2c_module(&go->i2c_adapter, &go->board_info->i2c_devs[i]);
295
296 if (go->tuner_type >= 0) {
297 struct tuner_setup setup = {
298 .addr = ADDR_UNSET,
299 .type = go->tuner_type,
300 .mode_mask = T_ANALOG_TV,
301 };
302
303 v4l2_device_call_all(&go->v4l2_dev, 0, tuner,
304 s_type_addr, &setup);
305 }
306 if (go->board_id == GO7007_BOARDID_ADLINK_MPG24)
307 v4l2_subdev_call(go->sd_video, video, s_routing,
308 0, 0, go->channel_number + 1);
309 }
310
311 ret = go7007_v4l2_init(go);
312 if (ret < 0)
313 return ret;
314
315 if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) {
316 go->audio_enabled = 1;
317 go7007_snd_init(go);
318 }
319 return 0;
320}
321EXPORT_SYMBOL(go7007_register_encoder);
322
323
324
325
326
327
328
329int go7007_start_encoder(struct go7007 *go)
330{
331 u8 *fw;
332 int fw_len, rv = 0, i, x, y;
333 u16 intr_val, intr_data;
334
335 go->modet_enable = 0;
336 for (i = 0; i < 4; i++)
337 go->modet[i].enable = 0;
338
339 switch (v4l2_ctrl_g_ctrl(go->modet_mode)) {
340 case V4L2_DETECT_MD_MODE_GLOBAL:
341 memset(go->modet_map, 0, sizeof(go->modet_map));
342 go->modet[0].enable = 1;
343 go->modet_enable = 1;
344 break;
345 case V4L2_DETECT_MD_MODE_REGION_GRID:
346 for (y = 0; y < go->height / 16; y++) {
347 for (x = 0; x < go->width / 16; x++) {
348 int idx = y * go->width / 16 + x;
349
350 go->modet[go->modet_map[idx]].enable = 1;
351 }
352 }
353 go->modet_enable = 1;
354 break;
355 }
356
357 if (go->dvd_mode)
358 go->modet_enable = 0;
359
360 if (go7007_construct_fw_image(go, &fw, &fw_len) < 0)
361 return -1;
362
363 if (go7007_send_firmware(go, fw, fw_len) < 0 ||
364 go7007_read_interrupt(go, &intr_val, &intr_data) < 0) {
365 v4l2_err(&go->v4l2_dev, "error transferring firmware\n");
366 rv = -1;
367 goto start_error;
368 }
369
370 go->state = STATE_DATA;
371 go->parse_length = 0;
372 go->seen_frame = 0;
373 if (go7007_stream_start(go) < 0) {
374 v4l2_err(&go->v4l2_dev, "error starting stream transfer\n");
375 rv = -1;
376 goto start_error;
377 }
378
379start_error:
380 kfree(fw);
381 return rv;
382}
383
384
385
386
387static inline void store_byte(struct go7007_buffer *vb, u8 byte)
388{
389 if (vb && vb->vb.vb2_buf.planes[0].bytesused < GO7007_BUF_SIZE) {
390 u8 *ptr = vb2_plane_vaddr(&vb->vb.vb2_buf, 0);
391
392 ptr[vb->vb.vb2_buf.planes[0].bytesused++] = byte;
393 }
394}
395
396static void go7007_set_motion_regions(struct go7007 *go, struct go7007_buffer *vb,
397 u32 motion_regions)
398{
399 if (motion_regions != go->modet_event_status) {
400 struct v4l2_event ev = {
401 .type = V4L2_EVENT_MOTION_DET,
402 .u.motion_det = {
403 .flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ,
404 .frame_sequence = vb->vb.sequence,
405 .region_mask = motion_regions,
406 },
407 };
408
409 v4l2_event_queue(&go->vdev, &ev);
410 go->modet_event_status = motion_regions;
411 }
412}
413
414
415
416
417
418static void go7007_motion_regions(struct go7007 *go, struct go7007_buffer *vb)
419{
420 u32 *bytesused = &vb->vb.vb2_buf.planes[0].bytesused;
421 unsigned motion[4] = { 0, 0, 0, 0 };
422 u32 motion_regions = 0;
423 unsigned stride = (go->width + 7) >> 3;
424 unsigned x, y;
425 int i;
426
427 for (i = 0; i < 216; ++i)
428 store_byte(vb, go->active_map[i]);
429 for (y = 0; y < go->height / 16; y++) {
430 for (x = 0; x < go->width / 16; x++) {
431 if (!(go->active_map[y * stride + (x >> 3)] & (1 << (x & 7))))
432 continue;
433 motion[go->modet_map[y * (go->width / 16) + x]]++;
434 }
435 }
436 motion_regions = ((motion[0] > 0) << 0) |
437 ((motion[1] > 0) << 1) |
438 ((motion[2] > 0) << 2) |
439 ((motion[3] > 0) << 3);
440 *bytesused -= 216;
441 go7007_set_motion_regions(go, vb, motion_regions);
442}
443
444
445
446
447static struct go7007_buffer *frame_boundary(struct go7007 *go, struct go7007_buffer *vb)
448{
449 u32 *bytesused;
450 struct go7007_buffer *vb_tmp = NULL;
451
452 if (vb == NULL) {
453 spin_lock(&go->spinlock);
454 if (!list_empty(&go->vidq_active))
455 vb = go->active_buf =
456 list_first_entry(&go->vidq_active, struct go7007_buffer, list);
457 spin_unlock(&go->spinlock);
458 go->next_seq++;
459 return vb;
460 }
461 bytesused = &vb->vb.vb2_buf.planes[0].bytesused;
462
463 vb->vb.sequence = go->next_seq++;
464 if (vb->modet_active && *bytesused + 216 < GO7007_BUF_SIZE)
465 go7007_motion_regions(go, vb);
466 else
467 go7007_set_motion_regions(go, vb, 0);
468
469 vb->vb.vb2_buf.timestamp = ktime_get_ns();
470 vb_tmp = vb;
471 spin_lock(&go->spinlock);
472 list_del(&vb->list);
473 if (list_empty(&go->vidq_active))
474 vb = NULL;
475 else
476 vb = list_first_entry(&go->vidq_active,
477 struct go7007_buffer, list);
478 go->active_buf = vb;
479 spin_unlock(&go->spinlock);
480 vb2_buffer_done(&vb_tmp->vb.vb2_buf, VB2_BUF_STATE_DONE);
481 return vb;
482}
483
484static void write_bitmap_word(struct go7007 *go)
485{
486 int x, y, i, stride = ((go->width >> 4) + 7) >> 3;
487
488 for (i = 0; i < 16; ++i) {
489 y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4);
490 x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4);
491 if (stride * y + (x >> 3) < sizeof(go->active_map))
492 go->active_map[stride * y + (x >> 3)] |=
493 (go->modet_word & 1) << (x & 0x7);
494 go->modet_word >>= 1;
495 }
496}
497
498
499
500
501
502
503void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length)
504{
505 struct go7007_buffer *vb = go->active_buf;
506 int i, seq_start_code = -1, gop_start_code = -1, frame_start_code = -1;
507
508 switch (go->format) {
509 case V4L2_PIX_FMT_MPEG4:
510 seq_start_code = 0xB0;
511 gop_start_code = 0xB3;
512 frame_start_code = 0xB6;
513 break;
514 case V4L2_PIX_FMT_MPEG1:
515 case V4L2_PIX_FMT_MPEG2:
516 seq_start_code = 0xB3;
517 gop_start_code = 0xB8;
518 frame_start_code = 0x00;
519 break;
520 }
521
522 for (i = 0; i < length; ++i) {
523 if (vb && vb->vb.vb2_buf.planes[0].bytesused >=
524 GO7007_BUF_SIZE - 3) {
525 v4l2_info(&go->v4l2_dev, "dropping oversized frame\n");
526 vb->vb.vb2_buf.planes[0].bytesused = 0;
527 vb->frame_offset = 0;
528 vb->modet_active = 0;
529 vb = go->active_buf = NULL;
530 }
531
532 switch (go->state) {
533 case STATE_DATA:
534 switch (buf[i]) {
535 case 0x00:
536 go->state = STATE_00;
537 break;
538 case 0xFF:
539 go->state = STATE_FF;
540 break;
541 default:
542 store_byte(vb, buf[i]);
543 break;
544 }
545 break;
546 case STATE_00:
547 switch (buf[i]) {
548 case 0x00:
549 go->state = STATE_00_00;
550 break;
551 case 0xFF:
552 store_byte(vb, 0x00);
553 go->state = STATE_FF;
554 break;
555 default:
556 store_byte(vb, 0x00);
557 store_byte(vb, buf[i]);
558 go->state = STATE_DATA;
559 break;
560 }
561 break;
562 case STATE_00_00:
563 switch (buf[i]) {
564 case 0x00:
565 store_byte(vb, 0x00);
566
567 break;
568 case 0x01:
569 go->state = STATE_00_00_01;
570 break;
571 case 0xFF:
572 store_byte(vb, 0x00);
573 store_byte(vb, 0x00);
574 go->state = STATE_FF;
575 break;
576 default:
577 store_byte(vb, 0x00);
578 store_byte(vb, 0x00);
579 store_byte(vb, buf[i]);
580 go->state = STATE_DATA;
581 break;
582 }
583 break;
584 case STATE_00_00_01:
585 if (buf[i] == 0xF8 && go->modet_enable == 0) {
586
587 store_byte(vb, 0x00);
588 store_byte(vb, 0x00);
589 store_byte(vb, 0x01);
590 store_byte(vb, 0xF8);
591 go->state = STATE_DATA;
592 break;
593 }
594
595
596 if ((go->format == V4L2_PIX_FMT_MPEG1 ||
597 go->format == V4L2_PIX_FMT_MPEG2 ||
598 go->format == V4L2_PIX_FMT_MPEG4) &&
599 (buf[i] == seq_start_code ||
600 buf[i] == gop_start_code ||
601 buf[i] == frame_start_code)) {
602 if (vb == NULL || go->seen_frame)
603 vb = frame_boundary(go, vb);
604 go->seen_frame = buf[i] == frame_start_code;
605 if (vb && go->seen_frame)
606 vb->frame_offset =
607 vb->vb.vb2_buf.planes[0].bytesused;
608 }
609
610
611 switch (buf[i]) {
612 case 0xF5:
613 go->parse_length = 12;
614 go->state = STATE_UNPARSED;
615 break;
616 case 0xF6:
617 go->state = STATE_VBI_LEN_A;
618 break;
619 case 0xF8:
620 go->parse_length = 0;
621 memset(go->active_map, 0,
622 sizeof(go->active_map));
623 go->state = STATE_MODET_MAP;
624 break;
625 case 0xFF:
626 store_byte(vb, 0x00);
627 store_byte(vb, 0x00);
628 store_byte(vb, 0x01);
629 go->state = STATE_FF;
630 break;
631 default:
632 store_byte(vb, 0x00);
633 store_byte(vb, 0x00);
634 store_byte(vb, 0x01);
635 store_byte(vb, buf[i]);
636 go->state = STATE_DATA;
637 break;
638 }
639 break;
640 case STATE_FF:
641 switch (buf[i]) {
642 case 0x00:
643 store_byte(vb, 0xFF);
644 go->state = STATE_00;
645 break;
646 case 0xFF:
647 store_byte(vb, 0xFF);
648
649 break;
650 case 0xD8:
651 if (go->format == V4L2_PIX_FMT_MJPEG)
652 vb = frame_boundary(go, vb);
653
654 default:
655 store_byte(vb, 0xFF);
656 store_byte(vb, buf[i]);
657 go->state = STATE_DATA;
658 break;
659 }
660 break;
661 case STATE_VBI_LEN_A:
662 go->parse_length = buf[i] << 8;
663 go->state = STATE_VBI_LEN_B;
664 break;
665 case STATE_VBI_LEN_B:
666 go->parse_length |= buf[i];
667 if (go->parse_length > 0)
668 go->state = STATE_UNPARSED;
669 else
670 go->state = STATE_DATA;
671 break;
672 case STATE_MODET_MAP:
673 if (go->parse_length < 204) {
674 if (go->parse_length & 1) {
675 go->modet_word |= buf[i];
676 write_bitmap_word(go);
677 } else
678 go->modet_word = buf[i] << 8;
679 } else if (go->parse_length == 207 && vb) {
680 vb->modet_active = buf[i];
681 }
682 if (++go->parse_length == 208)
683 go->state = STATE_DATA;
684 break;
685 case STATE_UNPARSED:
686 if (--go->parse_length == 0)
687 go->state = STATE_DATA;
688 break;
689 }
690 }
691}
692EXPORT_SYMBOL(go7007_parse_video_stream);
693
694
695
696
697struct go7007 *go7007_alloc(const struct go7007_board_info *board,
698 struct device *dev)
699{
700 struct go7007 *go;
701 int i;
702
703 go = kzalloc(sizeof(struct go7007), GFP_KERNEL);
704 if (go == NULL)
705 return NULL;
706 go->dev = dev;
707 go->board_info = board;
708 go->board_id = 0;
709 go->tuner_type = -1;
710 go->channel_number = 0;
711 go->name[0] = 0;
712 mutex_init(&go->hw_lock);
713 init_waitqueue_head(&go->frame_waitq);
714 spin_lock_init(&go->spinlock);
715 go->status = STATUS_INIT;
716 memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter));
717 go->i2c_adapter_online = 0;
718 go->interrupt_available = 0;
719 init_waitqueue_head(&go->interrupt_waitq);
720 go->input = 0;
721 go7007_update_board(go);
722 go->encoder_h_halve = 0;
723 go->encoder_v_halve = 0;
724 go->encoder_subsample = 0;
725 go->format = V4L2_PIX_FMT_MJPEG;
726 go->bitrate = 1500000;
727 go->fps_scale = 1;
728 go->pali = 0;
729 go->aspect_ratio = GO7007_RATIO_1_1;
730 go->gop_size = 0;
731 go->ipb = 0;
732 go->closed_gop = 0;
733 go->repeat_seqhead = 0;
734 go->seq_header_enable = 0;
735 go->gop_header_enable = 0;
736 go->dvd_mode = 0;
737 go->interlace_coding = 0;
738 for (i = 0; i < 4; ++i)
739 go->modet[i].enable = 0;
740 for (i = 0; i < 1624; ++i)
741 go->modet_map[i] = 0;
742 go->audio_deliver = NULL;
743 go->audio_enabled = 0;
744
745 return go;
746}
747EXPORT_SYMBOL(go7007_alloc);
748
749void go7007_update_board(struct go7007 *go)
750{
751 const struct go7007_board_info *board = go->board_info;
752
753 if (board->sensor_flags & GO7007_SENSOR_TV) {
754 go->standard = GO7007_STD_NTSC;
755 go->std = V4L2_STD_NTSC_M;
756 go->width = 720;
757 go->height = 480;
758 go->sensor_framerate = 30000;
759 } else {
760 go->standard = GO7007_STD_OTHER;
761 go->width = board->sensor_width;
762 go->height = board->sensor_height;
763 go->sensor_framerate = board->sensor_framerate;
764 }
765 go->encoder_v_offset = board->sensor_v_offset;
766 go->encoder_h_offset = board->sensor_h_offset;
767}
768EXPORT_SYMBOL(go7007_update_board);
769
770MODULE_LICENSE("GPL v2");
771