1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2005-2006 Micronas USA Inc.
4 */
5
6 #include <linux/module.h>
7 #include <linux/delay.h>
8 #include <linux/sched.h>
9 #include <linux/spinlock.h>
10 #include <linux/unistd.h>
11 #include <linux/time.h>
12 #include <linux/mm.h>
13 #include <linux/vmalloc.h>
14 #include <linux/device.h>
15 #include <linux/i2c.h>
16 #include <linux/firmware.h>
17 #include <linux/mutex.h>
18 #include <linux/uaccess.h>
19 #include <linux/slab.h>
20 #include <linux/videodev2.h>
21 #include <media/tuner.h>
22 #include <media/v4l2-common.h>
23 #include <media/v4l2-event.h>
24
25 #include "go7007-priv.h"
26
27 /*
28 * Wait for an interrupt to be delivered from the GO7007SB and return
29 * the associated value and data.
30 *
31 * Must be called with the hw_lock held.
32 */
go7007_read_interrupt(struct go7007 * go,u16 * value,u16 * data)33 int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data)
34 {
35 go->interrupt_available = 0;
36 go->hpi_ops->read_interrupt(go);
37 if (wait_event_timeout(go->interrupt_waitq,
38 go->interrupt_available, 5*HZ) < 0) {
39 v4l2_err(&go->v4l2_dev, "timeout waiting for read interrupt\n");
40 return -1;
41 }
42 if (!go->interrupt_available)
43 return -1;
44 go->interrupt_available = 0;
45 *value = go->interrupt_value & 0xfffe;
46 *data = go->interrupt_data;
47 return 0;
48 }
49 EXPORT_SYMBOL(go7007_read_interrupt);
50
51 /*
52 * Read a register/address on the GO7007SB.
53 *
54 * Must be called with the hw_lock held.
55 */
go7007_read_addr(struct go7007 * go,u16 addr,u16 * data)56 int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data)
57 {
58 int count = 100;
59 u16 value;
60
61 if (go7007_write_interrupt(go, 0x0010, addr) < 0)
62 return -EIO;
63 while (count-- > 0) {
64 if (go7007_read_interrupt(go, &value, data) == 0 &&
65 value == 0xa000)
66 return 0;
67 }
68 return -EIO;
69 }
70 EXPORT_SYMBOL(go7007_read_addr);
71
72 /*
73 * Send the boot firmware to the encoder, which just wakes it up and lets
74 * us talk to the GPIO pins and on-board I2C adapter.
75 *
76 * Must be called with the hw_lock held.
77 */
go7007_load_encoder(struct go7007 * go)78 static int go7007_load_encoder(struct go7007 *go)
79 {
80 const struct firmware *fw_entry;
81 char fw_name[] = "go7007/go7007fw.bin";
82 void *bounce;
83 int fw_len, rv = 0;
84 u16 intr_val, intr_data;
85
86 if (go->boot_fw == NULL) {
87 if (request_firmware(&fw_entry, fw_name, go->dev)) {
88 v4l2_err(go, "unable to load firmware from file \"%s\"\n", fw_name);
89 return -1;
90 }
91 if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) {
92 v4l2_err(go, "file \"%s\" does not appear to be go7007 firmware\n", fw_name);
93 release_firmware(fw_entry);
94 return -1;
95 }
96 fw_len = fw_entry->size - 16;
97 bounce = kmemdup(fw_entry->data + 16, fw_len, GFP_KERNEL);
98 if (bounce == NULL) {
99 v4l2_err(go, "unable to allocate %d bytes for firmware transfer\n", fw_len);
100 release_firmware(fw_entry);
101 return -1;
102 }
103 release_firmware(fw_entry);
104 go->boot_fw_len = fw_len;
105 go->boot_fw = bounce;
106 }
107 if (go7007_interface_reset(go) < 0 ||
108 go7007_send_firmware(go, go->boot_fw, go->boot_fw_len) < 0 ||
109 go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
110 (intr_val & ~0x1) != 0x5a5a) {
111 v4l2_err(go, "error transferring firmware\n");
112 rv = -1;
113 }
114 return rv;
115 }
116
117 MODULE_FIRMWARE("go7007/go7007fw.bin");
118
119 /*
120 * Boot the encoder and register the I2C adapter if requested. Do the
121 * minimum initialization necessary, since the board-specific code may
122 * still need to probe the board ID.
123 *
124 * Must NOT be called with the hw_lock held.
125 */
go7007_boot_encoder(struct go7007 * go,int init_i2c)126 int go7007_boot_encoder(struct go7007 *go, int init_i2c)
127 {
128 int ret;
129
130 mutex_lock(&go->hw_lock);
131 ret = go7007_load_encoder(go);
132 mutex_unlock(&go->hw_lock);
133 if (ret < 0)
134 return -1;
135 if (!init_i2c)
136 return 0;
137 if (go7007_i2c_init(go) < 0)
138 return -1;
139 go->i2c_adapter_online = 1;
140 return 0;
141 }
142 EXPORT_SYMBOL(go7007_boot_encoder);
143
144 /*
145 * Configure any hardware-related registers in the GO7007, such as GPIO
146 * pins and bus parameters, which are board-specific. This assumes
147 * the boot firmware has already been downloaded.
148 *
149 * Must be called with the hw_lock held.
150 */
go7007_init_encoder(struct go7007 * go)151 static int go7007_init_encoder(struct go7007 *go)
152 {
153 if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) {
154 go7007_write_addr(go, 0x1000, 0x0811);
155 go7007_write_addr(go, 0x1000, 0x0c11);
156 }
157 switch (go->board_id) {
158 case GO7007_BOARDID_MATRIX_REV:
159 /* Set GPIO pin 0 to be an output (audio clock control) */
160 go7007_write_addr(go, 0x3c82, 0x0001);
161 go7007_write_addr(go, 0x3c80, 0x00fe);
162 break;
163 case GO7007_BOARDID_ADLINK_MPG24:
164 /* set GPIO5 to be an output, currently low */
165 go7007_write_addr(go, 0x3c82, 0x0000);
166 go7007_write_addr(go, 0x3c80, 0x00df);
167 break;
168 case GO7007_BOARDID_ADS_USBAV_709:
169 /* GPIO pin 0: audio clock control */
170 /* pin 2: TW9906 reset */
171 /* pin 3: capture LED */
172 go7007_write_addr(go, 0x3c82, 0x000d);
173 go7007_write_addr(go, 0x3c80, 0x00f2);
174 break;
175 }
176 return 0;
177 }
178
179 /*
180 * Send the boot firmware to the GO7007 and configure the registers. This
181 * is the only way to stop the encoder once it has started streaming video.
182 *
183 * Must be called with the hw_lock held.
184 */
go7007_reset_encoder(struct go7007 * go)185 int go7007_reset_encoder(struct go7007 *go)
186 {
187 if (go7007_load_encoder(go) < 0)
188 return -1;
189 return go7007_init_encoder(go);
190 }
191
192 /*
193 * Attempt to instantiate an I2C client by ID, probably loading a module.
194 */
init_i2c_module(struct i2c_adapter * adapter,const struct go_i2c * const i2c)195 static int init_i2c_module(struct i2c_adapter *adapter, const struct go_i2c *const i2c)
196 {
197 struct go7007 *go = i2c_get_adapdata(adapter);
198 struct v4l2_device *v4l2_dev = &go->v4l2_dev;
199 struct v4l2_subdev *sd;
200 struct i2c_board_info info;
201
202 memset(&info, 0, sizeof(info));
203 strscpy(info.type, i2c->type, sizeof(info.type));
204 info.addr = i2c->addr;
205 info.flags = i2c->flags;
206
207 sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, NULL);
208 if (sd) {
209 if (i2c->is_video)
210 go->sd_video = sd;
211 if (i2c->is_audio)
212 go->sd_audio = sd;
213 return 0;
214 }
215
216 pr_info("go7007: probing for module i2c:%s failed\n", i2c->type);
217 return -EINVAL;
218 }
219
220 /*
221 * Detach and unregister the encoder. The go7007 struct won't be freed
222 * until v4l2 finishes releasing its resources and all associated fds are
223 * closed by applications.
224 */
go7007_remove(struct v4l2_device * v4l2_dev)225 static void go7007_remove(struct v4l2_device *v4l2_dev)
226 {
227 struct go7007 *go = container_of(v4l2_dev, struct go7007, v4l2_dev);
228
229 v4l2_device_unregister(v4l2_dev);
230 if (go->hpi_ops->release)
231 go->hpi_ops->release(go);
232 if (go->i2c_adapter_online) {
233 i2c_del_adapter(&go->i2c_adapter);
234 go->i2c_adapter_online = 0;
235 }
236
237 kfree(go->boot_fw);
238 go7007_v4l2_remove(go);
239 kfree(go);
240 }
241
242 /*
243 * Finalize the GO7007 hardware setup, register the on-board I2C adapter
244 * (if used on this board), load the I2C client driver for the sensor
245 * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2
246 * interfaces.
247 *
248 * Must NOT be called with the hw_lock held.
249 */
go7007_register_encoder(struct go7007 * go,unsigned num_i2c_devs)250 int go7007_register_encoder(struct go7007 *go, unsigned num_i2c_devs)
251 {
252 int i, ret;
253
254 dev_info(go->dev, "go7007: registering new %s\n", go->name);
255
256 go->v4l2_dev.release = go7007_remove;
257 ret = v4l2_device_register(go->dev, &go->v4l2_dev);
258 if (ret < 0)
259 return ret;
260
261 mutex_lock(&go->hw_lock);
262 ret = go7007_init_encoder(go);
263 mutex_unlock(&go->hw_lock);
264 if (ret < 0)
265 return ret;
266
267 ret = go7007_v4l2_ctrl_init(go);
268 if (ret < 0)
269 return ret;
270
271 if (!go->i2c_adapter_online &&
272 go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) {
273 ret = go7007_i2c_init(go);
274 if (ret < 0)
275 return ret;
276 go->i2c_adapter_online = 1;
277 }
278 if (go->i2c_adapter_online) {
279 if (go->board_id == GO7007_BOARDID_ADS_USBAV_709) {
280 /* Reset the TW9906 */
281 go7007_write_addr(go, 0x3c82, 0x0009);
282 msleep(50);
283 go7007_write_addr(go, 0x3c82, 0x000d);
284 }
285 for (i = 0; i < num_i2c_devs; ++i)
286 init_i2c_module(&go->i2c_adapter, &go->board_info->i2c_devs[i]);
287
288 if (go->tuner_type >= 0) {
289 struct tuner_setup setup = {
290 .addr = ADDR_UNSET,
291 .type = go->tuner_type,
292 .mode_mask = T_ANALOG_TV,
293 };
294
295 v4l2_device_call_all(&go->v4l2_dev, 0, tuner,
296 s_type_addr, &setup);
297 }
298 if (go->board_id == GO7007_BOARDID_ADLINK_MPG24)
299 v4l2_subdev_call(go->sd_video, video, s_routing,
300 0, 0, go->channel_number + 1);
301 }
302
303 ret = go7007_v4l2_init(go);
304 if (ret < 0)
305 return ret;
306
307 if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) {
308 go->audio_enabled = 1;
309 go7007_snd_init(go);
310 }
311 return 0;
312 }
313 EXPORT_SYMBOL(go7007_register_encoder);
314
315 /*
316 * Send the encode firmware to the encoder, which will cause it
317 * to immediately start delivering the video and audio streams.
318 *
319 * Must be called with the hw_lock held.
320 */
go7007_start_encoder(struct go7007 * go)321 int go7007_start_encoder(struct go7007 *go)
322 {
323 u8 *fw;
324 int fw_len, rv = 0, i, x, y;
325 u16 intr_val, intr_data;
326
327 go->modet_enable = 0;
328 for (i = 0; i < 4; i++)
329 go->modet[i].enable = 0;
330
331 switch (v4l2_ctrl_g_ctrl(go->modet_mode)) {
332 case V4L2_DETECT_MD_MODE_GLOBAL:
333 memset(go->modet_map, 0, sizeof(go->modet_map));
334 go->modet[0].enable = 1;
335 go->modet_enable = 1;
336 break;
337 case V4L2_DETECT_MD_MODE_REGION_GRID:
338 for (y = 0; y < go->height / 16; y++) {
339 for (x = 0; x < go->width / 16; x++) {
340 int idx = y * go->width / 16 + x;
341
342 go->modet[go->modet_map[idx]].enable = 1;
343 }
344 }
345 go->modet_enable = 1;
346 break;
347 }
348
349 if (go->dvd_mode)
350 go->modet_enable = 0;
351
352 if (go7007_construct_fw_image(go, &fw, &fw_len) < 0)
353 return -1;
354
355 if (go7007_send_firmware(go, fw, fw_len) < 0 ||
356 go7007_read_interrupt(go, &intr_val, &intr_data) < 0) {
357 v4l2_err(&go->v4l2_dev, "error transferring firmware\n");
358 rv = -1;
359 goto start_error;
360 }
361
362 go->state = STATE_DATA;
363 go->parse_length = 0;
364 go->seen_frame = 0;
365 if (go7007_stream_start(go) < 0) {
366 v4l2_err(&go->v4l2_dev, "error starting stream transfer\n");
367 rv = -1;
368 goto start_error;
369 }
370
371 start_error:
372 kfree(fw);
373 return rv;
374 }
375
376 /*
377 * Store a byte in the current video buffer, if there is one.
378 */
store_byte(struct go7007_buffer * vb,u8 byte)379 static inline void store_byte(struct go7007_buffer *vb, u8 byte)
380 {
381 if (vb && vb->vb.vb2_buf.planes[0].bytesused < GO7007_BUF_SIZE) {
382 u8 *ptr = vb2_plane_vaddr(&vb->vb.vb2_buf, 0);
383
384 ptr[vb->vb.vb2_buf.planes[0].bytesused++] = byte;
385 }
386 }
387
go7007_set_motion_regions(struct go7007 * go,struct go7007_buffer * vb,u32 motion_regions)388 static void go7007_set_motion_regions(struct go7007 *go, struct go7007_buffer *vb,
389 u32 motion_regions)
390 {
391 if (motion_regions != go->modet_event_status) {
392 struct v4l2_event ev = {
393 .type = V4L2_EVENT_MOTION_DET,
394 .u.motion_det = {
395 .flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ,
396 .frame_sequence = vb->vb.sequence,
397 .region_mask = motion_regions,
398 },
399 };
400
401 v4l2_event_queue(&go->vdev, &ev);
402 go->modet_event_status = motion_regions;
403 }
404 }
405
406 /*
407 * Determine regions with motion and send a motion detection event
408 * in case of changes.
409 */
go7007_motion_regions(struct go7007 * go,struct go7007_buffer * vb)410 static void go7007_motion_regions(struct go7007 *go, struct go7007_buffer *vb)
411 {
412 u32 *bytesused = &vb->vb.vb2_buf.planes[0].bytesused;
413 unsigned motion[4] = { 0, 0, 0, 0 };
414 u32 motion_regions = 0;
415 unsigned stride = (go->width + 7) >> 3;
416 unsigned x, y;
417 int i;
418
419 for (i = 0; i < 216; ++i)
420 store_byte(vb, go->active_map[i]);
421 for (y = 0; y < go->height / 16; y++) {
422 for (x = 0; x < go->width / 16; x++) {
423 if (!(go->active_map[y * stride + (x >> 3)] & (1 << (x & 7))))
424 continue;
425 motion[go->modet_map[y * (go->width / 16) + x]]++;
426 }
427 }
428 motion_regions = ((motion[0] > 0) << 0) |
429 ((motion[1] > 0) << 1) |
430 ((motion[2] > 0) << 2) |
431 ((motion[3] > 0) << 3);
432 *bytesused -= 216;
433 go7007_set_motion_regions(go, vb, motion_regions);
434 }
435
436 /*
437 * Deliver the last video buffer and get a new one to start writing to.
438 */
frame_boundary(struct go7007 * go,struct go7007_buffer * vb)439 static struct go7007_buffer *frame_boundary(struct go7007 *go, struct go7007_buffer *vb)
440 {
441 u32 *bytesused;
442 struct go7007_buffer *vb_tmp = NULL;
443 unsigned long flags;
444
445 if (vb == NULL) {
446 spin_lock_irqsave(&go->spinlock, flags);
447 if (!list_empty(&go->vidq_active))
448 vb = go->active_buf =
449 list_first_entry(&go->vidq_active, struct go7007_buffer, list);
450 spin_unlock_irqrestore(&go->spinlock, flags);
451 go->next_seq++;
452 return vb;
453 }
454 bytesused = &vb->vb.vb2_buf.planes[0].bytesused;
455
456 vb->vb.sequence = go->next_seq++;
457 if (vb->modet_active && *bytesused + 216 < GO7007_BUF_SIZE)
458 go7007_motion_regions(go, vb);
459 else
460 go7007_set_motion_regions(go, vb, 0);
461
462 vb->vb.vb2_buf.timestamp = ktime_get_ns();
463 vb_tmp = vb;
464 spin_lock_irqsave(&go->spinlock, flags);
465 list_del(&vb->list);
466 if (list_empty(&go->vidq_active))
467 vb = NULL;
468 else
469 vb = list_first_entry(&go->vidq_active,
470 struct go7007_buffer, list);
471 go->active_buf = vb;
472 spin_unlock_irqrestore(&go->spinlock, flags);
473 vb2_buffer_done(&vb_tmp->vb.vb2_buf, VB2_BUF_STATE_DONE);
474 return vb;
475 }
476
write_bitmap_word(struct go7007 * go)477 static void write_bitmap_word(struct go7007 *go)
478 {
479 int x, y, i, stride = ((go->width >> 4) + 7) >> 3;
480
481 for (i = 0; i < 16; ++i) {
482 y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4);
483 x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4);
484 if (stride * y + (x >> 3) < sizeof(go->active_map))
485 go->active_map[stride * y + (x >> 3)] |=
486 (go->modet_word & 1) << (x & 0x7);
487 go->modet_word >>= 1;
488 }
489 }
490
491 /*
492 * Parse a chunk of the video stream into frames. The frames are not
493 * delimited by the hardware, so we have to parse the frame boundaries
494 * based on the type of video stream we're receiving.
495 */
go7007_parse_video_stream(struct go7007 * go,u8 * buf,int length)496 void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length)
497 {
498 struct go7007_buffer *vb = go->active_buf;
499 int i, seq_start_code = -1, gop_start_code = -1, frame_start_code = -1;
500
501 switch (go->format) {
502 case V4L2_PIX_FMT_MPEG4:
503 seq_start_code = 0xB0;
504 gop_start_code = 0xB3;
505 frame_start_code = 0xB6;
506 break;
507 case V4L2_PIX_FMT_MPEG1:
508 case V4L2_PIX_FMT_MPEG2:
509 seq_start_code = 0xB3;
510 gop_start_code = 0xB8;
511 frame_start_code = 0x00;
512 break;
513 }
514
515 for (i = 0; i < length; ++i) {
516 if (vb && vb->vb.vb2_buf.planes[0].bytesused >=
517 GO7007_BUF_SIZE - 3) {
518 v4l2_info(&go->v4l2_dev, "dropping oversized frame\n");
519 vb->vb.vb2_buf.planes[0].bytesused = 0;
520 vb->frame_offset = 0;
521 vb->modet_active = 0;
522 vb = go->active_buf = NULL;
523 }
524
525 switch (go->state) {
526 case STATE_DATA:
527 switch (buf[i]) {
528 case 0x00:
529 go->state = STATE_00;
530 break;
531 case 0xFF:
532 go->state = STATE_FF;
533 break;
534 default:
535 store_byte(vb, buf[i]);
536 break;
537 }
538 break;
539 case STATE_00:
540 switch (buf[i]) {
541 case 0x00:
542 go->state = STATE_00_00;
543 break;
544 case 0xFF:
545 store_byte(vb, 0x00);
546 go->state = STATE_FF;
547 break;
548 default:
549 store_byte(vb, 0x00);
550 store_byte(vb, buf[i]);
551 go->state = STATE_DATA;
552 break;
553 }
554 break;
555 case STATE_00_00:
556 switch (buf[i]) {
557 case 0x00:
558 store_byte(vb, 0x00);
559 /* go->state remains STATE_00_00 */
560 break;
561 case 0x01:
562 go->state = STATE_00_00_01;
563 break;
564 case 0xFF:
565 store_byte(vb, 0x00);
566 store_byte(vb, 0x00);
567 go->state = STATE_FF;
568 break;
569 default:
570 store_byte(vb, 0x00);
571 store_byte(vb, 0x00);
572 store_byte(vb, buf[i]);
573 go->state = STATE_DATA;
574 break;
575 }
576 break;
577 case STATE_00_00_01:
578 if (buf[i] == 0xF8 && go->modet_enable == 0) {
579 /* MODET start code, but MODET not enabled */
580 store_byte(vb, 0x00);
581 store_byte(vb, 0x00);
582 store_byte(vb, 0x01);
583 store_byte(vb, 0xF8);
584 go->state = STATE_DATA;
585 break;
586 }
587 /* If this is the start of a new MPEG frame,
588 * get a new buffer */
589 if ((go->format == V4L2_PIX_FMT_MPEG1 ||
590 go->format == V4L2_PIX_FMT_MPEG2 ||
591 go->format == V4L2_PIX_FMT_MPEG4) &&
592 (buf[i] == seq_start_code ||
593 buf[i] == gop_start_code ||
594 buf[i] == frame_start_code)) {
595 if (vb == NULL || go->seen_frame)
596 vb = frame_boundary(go, vb);
597 go->seen_frame = buf[i] == frame_start_code;
598 if (vb && go->seen_frame)
599 vb->frame_offset =
600 vb->vb.vb2_buf.planes[0].bytesused;
601 }
602 /* Handle any special chunk types, or just write the
603 * start code to the (potentially new) buffer */
604 switch (buf[i]) {
605 case 0xF5: /* timestamp */
606 go->parse_length = 12;
607 go->state = STATE_UNPARSED;
608 break;
609 case 0xF6: /* vbi */
610 go->state = STATE_VBI_LEN_A;
611 break;
612 case 0xF8: /* MD map */
613 go->parse_length = 0;
614 memset(go->active_map, 0,
615 sizeof(go->active_map));
616 go->state = STATE_MODET_MAP;
617 break;
618 case 0xFF: /* Potential JPEG start code */
619 store_byte(vb, 0x00);
620 store_byte(vb, 0x00);
621 store_byte(vb, 0x01);
622 go->state = STATE_FF;
623 break;
624 default:
625 store_byte(vb, 0x00);
626 store_byte(vb, 0x00);
627 store_byte(vb, 0x01);
628 store_byte(vb, buf[i]);
629 go->state = STATE_DATA;
630 break;
631 }
632 break;
633 case STATE_FF:
634 switch (buf[i]) {
635 case 0x00:
636 store_byte(vb, 0xFF);
637 go->state = STATE_00;
638 break;
639 case 0xFF:
640 store_byte(vb, 0xFF);
641 /* go->state remains STATE_FF */
642 break;
643 case 0xD8:
644 if (go->format == V4L2_PIX_FMT_MJPEG)
645 vb = frame_boundary(go, vb);
646 fallthrough;
647 default:
648 store_byte(vb, 0xFF);
649 store_byte(vb, buf[i]);
650 go->state = STATE_DATA;
651 break;
652 }
653 break;
654 case STATE_VBI_LEN_A:
655 go->parse_length = buf[i] << 8;
656 go->state = STATE_VBI_LEN_B;
657 break;
658 case STATE_VBI_LEN_B:
659 go->parse_length |= buf[i];
660 if (go->parse_length > 0)
661 go->state = STATE_UNPARSED;
662 else
663 go->state = STATE_DATA;
664 break;
665 case STATE_MODET_MAP:
666 if (go->parse_length < 204) {
667 if (go->parse_length & 1) {
668 go->modet_word |= buf[i];
669 write_bitmap_word(go);
670 } else
671 go->modet_word = buf[i] << 8;
672 } else if (go->parse_length == 207 && vb) {
673 vb->modet_active = buf[i];
674 }
675 if (++go->parse_length == 208)
676 go->state = STATE_DATA;
677 break;
678 case STATE_UNPARSED:
679 if (--go->parse_length == 0)
680 go->state = STATE_DATA;
681 break;
682 }
683 }
684 }
685 EXPORT_SYMBOL(go7007_parse_video_stream);
686
687 /*
688 * Allocate a new go7007 struct. Used by the hardware-specific probe.
689 */
go7007_alloc(const struct go7007_board_info * board,struct device * dev)690 struct go7007 *go7007_alloc(const struct go7007_board_info *board,
691 struct device *dev)
692 {
693 struct go7007 *go;
694 int i;
695
696 go = kzalloc(sizeof(struct go7007), GFP_KERNEL);
697 if (go == NULL)
698 return NULL;
699 go->dev = dev;
700 go->board_info = board;
701 go->board_id = 0;
702 go->tuner_type = -1;
703 go->channel_number = 0;
704 go->name[0] = 0;
705 mutex_init(&go->hw_lock);
706 init_waitqueue_head(&go->frame_waitq);
707 spin_lock_init(&go->spinlock);
708 go->status = STATUS_INIT;
709 memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter));
710 go->i2c_adapter_online = 0;
711 go->interrupt_available = 0;
712 init_waitqueue_head(&go->interrupt_waitq);
713 go->input = 0;
714 go7007_update_board(go);
715 go->encoder_h_halve = 0;
716 go->encoder_v_halve = 0;
717 go->encoder_subsample = 0;
718 go->format = V4L2_PIX_FMT_MJPEG;
719 go->bitrate = 1500000;
720 go->fps_scale = 1;
721 go->pali = 0;
722 go->aspect_ratio = GO7007_RATIO_1_1;
723 go->gop_size = 0;
724 go->ipb = 0;
725 go->closed_gop = 0;
726 go->repeat_seqhead = 0;
727 go->seq_header_enable = 0;
728 go->gop_header_enable = 0;
729 go->dvd_mode = 0;
730 go->interlace_coding = 0;
731 for (i = 0; i < 4; ++i)
732 go->modet[i].enable = 0;
733 for (i = 0; i < 1624; ++i)
734 go->modet_map[i] = 0;
735 go->audio_deliver = NULL;
736 go->audio_enabled = 0;
737
738 return go;
739 }
740 EXPORT_SYMBOL(go7007_alloc);
741
go7007_update_board(struct go7007 * go)742 void go7007_update_board(struct go7007 *go)
743 {
744 const struct go7007_board_info *board = go->board_info;
745
746 if (board->sensor_flags & GO7007_SENSOR_TV) {
747 go->standard = GO7007_STD_NTSC;
748 go->std = V4L2_STD_NTSC_M;
749 go->width = 720;
750 go->height = 480;
751 go->sensor_framerate = 30000;
752 } else {
753 go->standard = GO7007_STD_OTHER;
754 go->width = board->sensor_width;
755 go->height = board->sensor_height;
756 go->sensor_framerate = board->sensor_framerate;
757 }
758 go->encoder_v_offset = board->sensor_v_offset;
759 go->encoder_h_offset = board->sensor_h_offset;
760 }
761 EXPORT_SYMBOL(go7007_update_board);
762
763 MODULE_LICENSE("GPL v2");
764