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 */ 33int 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} 49EXPORT_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 */ 56int 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} 70EXPORT_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 */ 78static 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; 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 kfree(go->boot_fw); 113 go->boot_fw = NULL; 114 return -1; 115 } 116 return 0; 117} 118 119MODULE_FIRMWARE("go7007/go7007fw.bin"); 120 121/* 122 * Boot the encoder and register the I2C adapter if requested. Do the 123 * minimum initialization necessary, since the board-specific code may 124 * still need to probe the board ID. 125 * 126 * Must NOT be called with the hw_lock held. 127 */ 128int go7007_boot_encoder(struct go7007 *go, int init_i2c) 129{ 130 int ret; 131 132 mutex_lock(&go->hw_lock); 133 ret = go7007_load_encoder(go); 134 mutex_unlock(&go->hw_lock); 135 if (ret < 0) 136 return -1; 137 if (!init_i2c) 138 return 0; 139 if (go7007_i2c_init(go) < 0) 140 return -1; 141 go->i2c_adapter_online = 1; 142 return 0; 143} 144EXPORT_SYMBOL(go7007_boot_encoder); 145 146/* 147 * Configure any hardware-related registers in the GO7007, such as GPIO 148 * pins and bus parameters, which are board-specific. This assumes 149 * the boot firmware has already been downloaded. 150 * 151 * Must be called with the hw_lock held. 152 */ 153static int go7007_init_encoder(struct go7007 *go) 154{ 155 if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) { 156 go7007_write_addr(go, 0x1000, 0x0811); 157 go7007_write_addr(go, 0x1000, 0x0c11); 158 } 159 switch (go->board_id) { 160 case GO7007_BOARDID_MATRIX_REV: 161 /* Set GPIO pin 0 to be an output (audio clock control) */ 162 go7007_write_addr(go, 0x3c82, 0x0001); 163 go7007_write_addr(go, 0x3c80, 0x00fe); 164 break; 165 case GO7007_BOARDID_ADLINK_MPG24: 166 /* set GPIO5 to be an output, currently low */ 167 go7007_write_addr(go, 0x3c82, 0x0000); 168 go7007_write_addr(go, 0x3c80, 0x00df); 169 break; 170 case GO7007_BOARDID_ADS_USBAV_709: 171 /* GPIO pin 0: audio clock control */ 172 /* pin 2: TW9906 reset */ 173 /* pin 3: capture LED */ 174 go7007_write_addr(go, 0x3c82, 0x000d); 175 go7007_write_addr(go, 0x3c80, 0x00f2); 176 break; 177 } 178 return 0; 179} 180 181/* 182 * Send the boot firmware to the GO7007 and configure the registers. This 183 * is the only way to stop the encoder once it has started streaming video. 184 * 185 * Must be called with the hw_lock held. 186 */ 187int go7007_reset_encoder(struct go7007 *go) 188{ 189 if (go7007_load_encoder(go) < 0) 190 return -1; 191 return go7007_init_encoder(go); 192} 193 194/* 195 * Attempt to instantiate an I2C client by ID, probably loading a module. 196 */ 197static int init_i2c_module(struct i2c_adapter *adapter, const struct go_i2c *const i2c) 198{ 199 struct go7007 *go = i2c_get_adapdata(adapter); 200 struct v4l2_device *v4l2_dev = &go->v4l2_dev; 201 struct v4l2_subdev *sd; 202 struct i2c_board_info info; 203 204 memset(&info, 0, sizeof(info)); 205 strscpy(info.type, i2c->type, sizeof(info.type)); 206 info.addr = i2c->addr; 207 info.flags = i2c->flags; 208 209 sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, NULL); 210 if (sd) { 211 if (i2c->is_video) 212 go->sd_video = sd; 213 if (i2c->is_audio) 214 go->sd_audio = sd; 215 return 0; 216 } 217 218 pr_info("go7007: probing for module i2c:%s failed\n", i2c->type); 219 return -EINVAL; 220} 221 222/* 223 * Detach and unregister the encoder. The go7007 struct won't be freed 224 * until v4l2 finishes releasing its resources and all associated fds are 225 * closed by applications. 226 */ 227static void go7007_remove(struct v4l2_device *v4l2_dev) 228{ 229 struct go7007 *go = container_of(v4l2_dev, struct go7007, v4l2_dev); 230 231 v4l2_device_unregister(v4l2_dev); 232 if (go->hpi_ops->release) 233 go->hpi_ops->release(go); 234 if (go->i2c_adapter_online) { 235 i2c_del_adapter(&go->i2c_adapter); 236 go->i2c_adapter_online = 0; 237 } 238 239 kfree(go->boot_fw); 240 go7007_v4l2_remove(go); 241 kfree(go); 242} 243 244/* 245 * Finalize the GO7007 hardware setup, register the on-board I2C adapter 246 * (if used on this board), load the I2C client driver for the sensor 247 * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2 248 * interfaces. 249 * 250 * Must NOT be called with the hw_lock held. 251 */ 252int go7007_register_encoder(struct go7007 *go, unsigned num_i2c_devs) 253{ 254 int i, ret; 255 256 dev_info(go->dev, "go7007: registering new %s\n", go->name); 257 258 go->v4l2_dev.release = go7007_remove; 259 ret = v4l2_device_register(go->dev, &go->v4l2_dev); 260 if (ret < 0) 261 return ret; 262 263 mutex_lock(&go->hw_lock); 264 ret = go7007_init_encoder(go); 265 mutex_unlock(&go->hw_lock); 266 if (ret < 0) 267 return ret; 268 269 ret = go7007_v4l2_ctrl_init(go); 270 if (ret < 0) 271 return ret; 272 273 if (!go->i2c_adapter_online && 274 go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) { 275 ret = go7007_i2c_init(go); 276 if (ret < 0) 277 return ret; 278 go->i2c_adapter_online = 1; 279 } 280 if (go->i2c_adapter_online) { 281 if (go->board_id == GO7007_BOARDID_ADS_USBAV_709) { 282 /* Reset the TW9906 */ 283 go7007_write_addr(go, 0x3c82, 0x0009); 284 msleep(50); 285 go7007_write_addr(go, 0x3c82, 0x000d); 286 } 287 for (i = 0; i < num_i2c_devs; ++i) 288 init_i2c_module(&go->i2c_adapter, &go->board_info->i2c_devs[i]); 289 290 if (go->tuner_type >= 0) { 291 struct tuner_setup setup = { 292 .addr = ADDR_UNSET, 293 .type = go->tuner_type, 294 .mode_mask = T_ANALOG_TV, 295 }; 296 297 v4l2_device_call_all(&go->v4l2_dev, 0, tuner, 298 s_type_addr, &setup); 299 } 300 if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) 301 v4l2_subdev_call(go->sd_video, video, s_routing, 302 0, 0, go->channel_number + 1); 303 } 304 305 ret = go7007_v4l2_init(go); 306 if (ret < 0) 307 return ret; 308 309 if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) { 310 go->audio_enabled = 1; 311 go7007_snd_init(go); 312 } 313 return 0; 314} 315EXPORT_SYMBOL(go7007_register_encoder); 316 317/* 318 * Send the encode firmware to the encoder, which will cause it 319 * to immediately start delivering the video and audio streams. 320 * 321 * Must be called with the hw_lock held. 322 */ 323int go7007_start_encoder(struct go7007 *go) 324{ 325 u8 *fw; 326 int fw_len, rv = 0, i, x, y; 327 u16 intr_val, intr_data; 328 329 go->modet_enable = 0; 330 for (i = 0; i < 4; i++) 331 go->modet[i].enable = 0; 332 333 switch (v4l2_ctrl_g_ctrl(go->modet_mode)) { 334 case V4L2_DETECT_MD_MODE_GLOBAL: 335 memset(go->modet_map, 0, sizeof(go->modet_map)); 336 go->modet[0].enable = 1; 337 go->modet_enable = 1; 338 break; 339 case V4L2_DETECT_MD_MODE_REGION_GRID: 340 for (y = 0; y < go->height / 16; y++) { 341 for (x = 0; x < go->width / 16; x++) { 342 int idx = y * go->width / 16 + x; 343 344 go->modet[go->modet_map[idx]].enable = 1; 345 } 346 } 347 go->modet_enable = 1; 348 break; 349 } 350 351 if (go->dvd_mode) 352 go->modet_enable = 0; 353 354 if (go7007_construct_fw_image(go, &fw, &fw_len) < 0) 355 return -1; 356 357 if (go7007_send_firmware(go, fw, fw_len) < 0 || 358 go7007_read_interrupt(go, &intr_val, &intr_data) < 0) { 359 v4l2_err(&go->v4l2_dev, "error transferring firmware\n"); 360 rv = -1; 361 goto start_error; 362 } 363 364 go->state = STATE_DATA; 365 go->parse_length = 0; 366 go->seen_frame = 0; 367 if (go7007_stream_start(go) < 0) { 368 v4l2_err(&go->v4l2_dev, "error starting stream transfer\n"); 369 rv = -1; 370 goto start_error; 371 } 372 373start_error: 374 kfree(fw); 375 return rv; 376} 377 378/* 379 * Store a byte in the current video buffer, if there is one. 380 */ 381static inline void store_byte(struct go7007_buffer *vb, u8 byte) 382{ 383 if (vb && vb->vb.vb2_buf.planes[0].bytesused < GO7007_BUF_SIZE) { 384 u8 *ptr = vb2_plane_vaddr(&vb->vb.vb2_buf, 0); 385 386 ptr[vb->vb.vb2_buf.planes[0].bytesused++] = byte; 387 } 388} 389 390static void go7007_set_motion_regions(struct go7007 *go, struct go7007_buffer *vb, 391 u32 motion_regions) 392{ 393 if (motion_regions != go->modet_event_status) { 394 struct v4l2_event ev = { 395 .type = V4L2_EVENT_MOTION_DET, 396 .u.motion_det = { 397 .flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ, 398 .frame_sequence = vb->vb.sequence, 399 .region_mask = motion_regions, 400 }, 401 }; 402 403 v4l2_event_queue(&go->vdev, &ev); 404 go->modet_event_status = motion_regions; 405 } 406} 407 408/* 409 * Determine regions with motion and send a motion detection event 410 * in case of changes. 411 */ 412static void go7007_motion_regions(struct go7007 *go, struct go7007_buffer *vb) 413{ 414 u32 *bytesused = &vb->vb.vb2_buf.planes[0].bytesused; 415 unsigned motion[4] = { 0, 0, 0, 0 }; 416 u32 motion_regions = 0; 417 unsigned stride = (go->width + 7) >> 3; 418 unsigned x, y; 419 int i; 420 421 for (i = 0; i < 216; ++i) 422 store_byte(vb, go->active_map[i]); 423 for (y = 0; y < go->height / 16; y++) { 424 for (x = 0; x < go->width / 16; x++) { 425 if (!(go->active_map[y * stride + (x >> 3)] & (1 << (x & 7)))) 426 continue; 427 motion[go->modet_map[y * (go->width / 16) + x]]++; 428 } 429 } 430 motion_regions = ((motion[0] > 0) << 0) | 431 ((motion[1] > 0) << 1) | 432 ((motion[2] > 0) << 2) | 433 ((motion[3] > 0) << 3); 434 *bytesused -= 216; 435 go7007_set_motion_regions(go, vb, motion_regions); 436} 437 438/* 439 * Deliver the last video buffer and get a new one to start writing to. 440 */ 441static struct go7007_buffer *frame_boundary(struct go7007 *go, struct go7007_buffer *vb) 442{ 443 u32 *bytesused; 444 struct go7007_buffer *vb_tmp = NULL; 445 unsigned long flags; 446 447 if (vb == NULL) { 448 spin_lock_irqsave(&go->spinlock, flags); 449 if (!list_empty(&go->vidq_active)) 450 vb = go->active_buf = 451 list_first_entry(&go->vidq_active, struct go7007_buffer, list); 452 spin_unlock_irqrestore(&go->spinlock, flags); 453 go->next_seq++; 454 return vb; 455 } 456 bytesused = &vb->vb.vb2_buf.planes[0].bytesused; 457 458 vb->vb.sequence = go->next_seq++; 459 if (vb->modet_active && *bytesused + 216 < GO7007_BUF_SIZE) 460 go7007_motion_regions(go, vb); 461 else 462 go7007_set_motion_regions(go, vb, 0); 463 464 vb->vb.vb2_buf.timestamp = ktime_get_ns(); 465 vb_tmp = vb; 466 spin_lock_irqsave(&go->spinlock, flags); 467 list_del(&vb->list); 468 if (list_empty(&go->vidq_active)) 469 vb = NULL; 470 else 471 vb = list_first_entry(&go->vidq_active, 472 struct go7007_buffer, list); 473 go->active_buf = vb; 474 spin_unlock_irqrestore(&go->spinlock, flags); 475 vb2_buffer_done(&vb_tmp->vb.vb2_buf, VB2_BUF_STATE_DONE); 476 return vb; 477} 478 479static void write_bitmap_word(struct go7007 *go) 480{ 481 int x, y, i, stride = ((go->width >> 4) + 7) >> 3; 482 483 for (i = 0; i < 16; ++i) { 484 y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4); 485 x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4); 486 if (stride * y + (x >> 3) < sizeof(go->active_map)) 487 go->active_map[stride * y + (x >> 3)] |= 488 (go->modet_word & 1) << (x & 0x7); 489 go->modet_word >>= 1; 490 } 491} 492 493/* 494 * Parse a chunk of the video stream into frames. The frames are not 495 * delimited by the hardware, so we have to parse the frame boundaries 496 * based on the type of video stream we're receiving. 497 */ 498void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length) 499{ 500 struct go7007_buffer *vb = go->active_buf; 501 int i, seq_start_code = -1, gop_start_code = -1, frame_start_code = -1; 502 503 switch (go->format) { 504 case V4L2_PIX_FMT_MPEG4: 505 seq_start_code = 0xB0; 506 gop_start_code = 0xB3; 507 frame_start_code = 0xB6; 508 break; 509 case V4L2_PIX_FMT_MPEG1: 510 case V4L2_PIX_FMT_MPEG2: 511 seq_start_code = 0xB3; 512 gop_start_code = 0xB8; 513 frame_start_code = 0x00; 514 break; 515 } 516 517 for (i = 0; i < length; ++i) { 518 if (vb && vb->vb.vb2_buf.planes[0].bytesused >= 519 GO7007_BUF_SIZE - 3) { 520 v4l2_info(&go->v4l2_dev, "dropping oversized frame\n"); 521 vb2_set_plane_payload(&vb->vb.vb2_buf, 0, 0); 522 vb->frame_offset = 0; 523 vb->modet_active = 0; 524 vb = go->active_buf = NULL; 525 } 526 527 switch (go->state) { 528 case STATE_DATA: 529 switch (buf[i]) { 530 case 0x00: 531 go->state = STATE_00; 532 break; 533 case 0xFF: 534 go->state = STATE_FF; 535 break; 536 default: 537 store_byte(vb, buf[i]); 538 break; 539 } 540 break; 541 case STATE_00: 542 switch (buf[i]) { 543 case 0x00: 544 go->state = STATE_00_00; 545 break; 546 case 0xFF: 547 store_byte(vb, 0x00); 548 go->state = STATE_FF; 549 break; 550 default: 551 store_byte(vb, 0x00); 552 store_byte(vb, buf[i]); 553 go->state = STATE_DATA; 554 break; 555 } 556 break; 557 case STATE_00_00: 558 switch (buf[i]) { 559 case 0x00: 560 store_byte(vb, 0x00); 561 /* go->state remains STATE_00_00 */ 562 break; 563 case 0x01: 564 go->state = STATE_00_00_01; 565 break; 566 case 0xFF: 567 store_byte(vb, 0x00); 568 store_byte(vb, 0x00); 569 go->state = STATE_FF; 570 break; 571 default: 572 store_byte(vb, 0x00); 573 store_byte(vb, 0x00); 574 store_byte(vb, buf[i]); 575 go->state = STATE_DATA; 576 break; 577 } 578 break; 579 case STATE_00_00_01: 580 if (buf[i] == 0xF8 && go->modet_enable == 0) { 581 /* MODET start code, but MODET not enabled */ 582 store_byte(vb, 0x00); 583 store_byte(vb, 0x00); 584 store_byte(vb, 0x01); 585 store_byte(vb, 0xF8); 586 go->state = STATE_DATA; 587 break; 588 } 589 /* If this is the start of a new MPEG frame, 590 * get a new buffer */ 591 if ((go->format == V4L2_PIX_FMT_MPEG1 || 592 go->format == V4L2_PIX_FMT_MPEG2 || 593 go->format == V4L2_PIX_FMT_MPEG4) && 594 (buf[i] == seq_start_code || 595 buf[i] == gop_start_code || 596 buf[i] == frame_start_code)) { 597 if (vb == NULL || go->seen_frame) 598 vb = frame_boundary(go, vb); 599 go->seen_frame = buf[i] == frame_start_code; 600 if (vb && go->seen_frame) 601 vb->frame_offset = 602 vb->vb.vb2_buf.planes[0].bytesused; 603 } 604 /* Handle any special chunk types, or just write the 605 * start code to the (potentially new) buffer */ 606 switch (buf[i]) { 607 case 0xF5: /* timestamp */ 608 go->parse_length = 12; 609 go->state = STATE_UNPARSED; 610 break; 611 case 0xF6: /* vbi */ 612 go->state = STATE_VBI_LEN_A; 613 break; 614 case 0xF8: /* MD map */ 615 go->parse_length = 0; 616 memset(go->active_map, 0, 617 sizeof(go->active_map)); 618 go->state = STATE_MODET_MAP; 619 break; 620 case 0xFF: /* Potential JPEG start code */ 621 store_byte(vb, 0x00); 622 store_byte(vb, 0x00); 623 store_byte(vb, 0x01); 624 go->state = STATE_FF; 625 break; 626 default: 627 store_byte(vb, 0x00); 628 store_byte(vb, 0x00); 629 store_byte(vb, 0x01); 630 store_byte(vb, buf[i]); 631 go->state = STATE_DATA; 632 break; 633 } 634 break; 635 case STATE_FF: 636 switch (buf[i]) { 637 case 0x00: 638 store_byte(vb, 0xFF); 639 go->state = STATE_00; 640 break; 641 case 0xFF: 642 store_byte(vb, 0xFF); 643 /* go->state remains STATE_FF */ 644 break; 645 case 0xD8: 646 if (go->format == V4L2_PIX_FMT_MJPEG) 647 vb = frame_boundary(go, vb); 648 fallthrough; 649 default: 650 store_byte(vb, 0xFF); 651 store_byte(vb, buf[i]); 652 go->state = STATE_DATA; 653 break; 654 } 655 break; 656 case STATE_VBI_LEN_A: 657 go->parse_length = buf[i] << 8; 658 go->state = STATE_VBI_LEN_B; 659 break; 660 case STATE_VBI_LEN_B: 661 go->parse_length |= buf[i]; 662 if (go->parse_length > 0) 663 go->state = STATE_UNPARSED; 664 else 665 go->state = STATE_DATA; 666 break; 667 case STATE_MODET_MAP: 668 if (go->parse_length < 204) { 669 if (go->parse_length & 1) { 670 go->modet_word |= buf[i]; 671 write_bitmap_word(go); 672 } else 673 go->modet_word = buf[i] << 8; 674 } else if (go->parse_length == 207 && vb) { 675 vb->modet_active = buf[i]; 676 } 677 if (++go->parse_length == 208) 678 go->state = STATE_DATA; 679 break; 680 case STATE_UNPARSED: 681 if (--go->parse_length == 0) 682 go->state = STATE_DATA; 683 break; 684 } 685 } 686} 687EXPORT_SYMBOL(go7007_parse_video_stream); 688 689/* 690 * Allocate a new go7007 struct. Used by the hardware-specific probe. 691 */ 692struct go7007 *go7007_alloc(const struct go7007_board_info *board, 693 struct device *dev) 694{ 695 struct go7007 *go; 696 697 go = kzalloc(sizeof(struct go7007), GFP_KERNEL); 698 if (go == NULL) 699 return NULL; 700 go->dev = dev; 701 go->board_info = board; 702 go->tuner_type = -1; 703 mutex_init(&go->hw_lock); 704 init_waitqueue_head(&go->frame_waitq); 705 spin_lock_init(&go->spinlock); 706 go->status = STATUS_INIT; 707 init_waitqueue_head(&go->interrupt_waitq); 708 go7007_update_board(go); 709 go->format = V4L2_PIX_FMT_MJPEG; 710 go->bitrate = 1500000; 711 go->fps_scale = 1; 712 go->aspect_ratio = GO7007_RATIO_1_1; 713 714 return go; 715} 716EXPORT_SYMBOL(go7007_alloc); 717 718void go7007_update_board(struct go7007 *go) 719{ 720 const struct go7007_board_info *board = go->board_info; 721 722 if (board->sensor_flags & GO7007_SENSOR_TV) { 723 go->standard = GO7007_STD_NTSC; 724 go->std = V4L2_STD_NTSC_M; 725 go->width = 720; 726 go->height = 480; 727 go->sensor_framerate = 30000; 728 } else { 729 go->standard = GO7007_STD_OTHER; 730 go->width = board->sensor_width; 731 go->height = board->sensor_height; 732 go->sensor_framerate = board->sensor_framerate; 733 } 734 go->encoder_v_offset = board->sensor_v_offset; 735 go->encoder_h_offset = board->sensor_h_offset; 736} 737EXPORT_SYMBOL(go7007_update_board); 738 739MODULE_LICENSE("GPL v2"); 740