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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 */ 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 } 387 388 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 */ 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 */ 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 } 476 477 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 */ 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 */ 690 struct go7007 *go7007_alloc(const struct go7007_board_info *board, 691 struct device *dev) 692 { 693 struct go7007 *go; 694 695 go = kzalloc(sizeof(struct go7007), GFP_KERNEL); 696 if (go == NULL) 697 return NULL; 698 go->dev = dev; 699 go->board_info = board; 700 go->tuner_type = -1; 701 mutex_init(&go->hw_lock); 702 init_waitqueue_head(&go->frame_waitq); 703 spin_lock_init(&go->spinlock); 704 go->status = STATUS_INIT; 705 init_waitqueue_head(&go->interrupt_waitq); 706 go7007_update_board(go); 707 go->format = V4L2_PIX_FMT_MJPEG; 708 go->bitrate = 1500000; 709 go->fps_scale = 1; 710 go->aspect_ratio = GO7007_RATIO_1_1; 711 712 return go; 713 } 714 EXPORT_SYMBOL(go7007_alloc); 715 716 void go7007_update_board(struct go7007 *go) 717 { 718 const struct go7007_board_info *board = go->board_info; 719 720 if (board->sensor_flags & GO7007_SENSOR_TV) { 721 go->standard = GO7007_STD_NTSC; 722 go->std = V4L2_STD_NTSC_M; 723 go->width = 720; 724 go->height = 480; 725 go->sensor_framerate = 30000; 726 } else { 727 go->standard = GO7007_STD_OTHER; 728 go->width = board->sensor_width; 729 go->height = board->sensor_height; 730 go->sensor_framerate = board->sensor_framerate; 731 } 732 go->encoder_v_offset = board->sensor_v_offset; 733 go->encoder_h_offset = board->sensor_h_offset; 734 } 735 EXPORT_SYMBOL(go7007_update_board); 736 737 MODULE_LICENSE("GPL v2"); 738