1 /* 2 * Copyright (C) 2005-2006 Micronas USA Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License (Version 2) as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13 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 * Wait for an interrupt to be delivered from the GO7007SB and return 37 * the associated value and data. 38 * 39 * Must be called with the hw_lock held. 40 */ 41 int 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 } 57 EXPORT_SYMBOL(go7007_read_interrupt); 58 59 /* 60 * Read a register/address on the GO7007SB. 61 * 62 * Must be called with the hw_lock held. 63 */ 64 int 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 } 78 EXPORT_SYMBOL(go7007_read_addr); 79 80 /* 81 * Send the boot firmware to the encoder, which just wakes it up and lets 82 * us talk to the GPIO pins and on-board I2C adapter. 83 * 84 * Must be called with the hw_lock held. 85 */ 86 static 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 } 124 125 MODULE_FIRMWARE("go7007/go7007fw.bin"); 126 127 /* 128 * Boot the encoder and register the I2C adapter if requested. Do the 129 * minimum initialization necessary, since the board-specific code may 130 * still need to probe the board ID. 131 * 132 * Must NOT be called with the hw_lock held. 133 */ 134 int 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 } 150 EXPORT_SYMBOL(go7007_boot_encoder); 151 152 /* 153 * Configure any hardware-related registers in the GO7007, such as GPIO 154 * pins and bus parameters, which are board-specific. This assumes 155 * the boot firmware has already been downloaded. 156 * 157 * Must be called with the hw_lock held. 158 */ 159 static 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 /* Set GPIO pin 0 to be an output (audio clock control) */ 168 go7007_write_addr(go, 0x3c82, 0x0001); 169 go7007_write_addr(go, 0x3c80, 0x00fe); 170 break; 171 case GO7007_BOARDID_ADLINK_MPG24: 172 /* set GPIO5 to be an output, currently low */ 173 go7007_write_addr(go, 0x3c82, 0x0000); 174 go7007_write_addr(go, 0x3c80, 0x00df); 175 break; 176 case GO7007_BOARDID_ADS_USBAV_709: 177 /* GPIO pin 0: audio clock control */ 178 /* pin 2: TW9906 reset */ 179 /* pin 3: capture LED */ 180 go7007_write_addr(go, 0x3c82, 0x000d); 181 go7007_write_addr(go, 0x3c80, 0x00f2); 182 break; 183 } 184 return 0; 185 } 186 187 /* 188 * Send the boot firmware to the GO7007 and configure the registers. This 189 * is the only way to stop the encoder once it has started streaming video. 190 * 191 * Must be called with the hw_lock held. 192 */ 193 int 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 * Attempt to instantiate an I2C client by ID, probably loading a module. 202 */ 203 static 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 * Detach and unregister the encoder. The go7007 struct won't be freed 230 * until v4l2 finishes releasing its resources and all associated fds are 231 * closed by applications. 232 */ 233 static 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 * Finalize the GO7007 hardware setup, register the on-board I2C adapter 252 * (if used on this board), load the I2C client driver for the sensor 253 * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2 254 * interfaces. 255 * 256 * Must NOT be called with the hw_lock held. 257 */ 258 int 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 /* Reset the TW9906 */ 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 } 321 EXPORT_SYMBOL(go7007_register_encoder); 322 323 /* 324 * Send the encode firmware to the encoder, which will cause it 325 * to immediately start delivering the video and audio streams. 326 * 327 * Must be called with the hw_lock held. 328 */ 329 int 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 } 378 379 start_error: 380 kfree(fw); 381 return rv; 382 } 383 384 /* 385 * Store a byte in the current video buffer, if there is one. 386 */ 387 static inline void store_byte(struct go7007_buffer *vb, u8 byte) 388 { 389 if (vb && vb->vb.v4l2_planes[0].bytesused < GO7007_BUF_SIZE) { 390 u8 *ptr = vb2_plane_vaddr(&vb->vb, 0); 391 392 ptr[vb->vb.v4l2_planes[0].bytesused++] = byte; 393 } 394 } 395 396 static 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.v4l2_buf.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 * Determine regions with motion and send a motion detection event 416 * in case of changes. 417 */ 418 static void go7007_motion_regions(struct go7007 *go, struct go7007_buffer *vb) 419 { 420 u32 *bytesused = &vb->vb.v4l2_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 * Deliver the last video buffer and get a new one to start writing to. 446 */ 447 static struct go7007_buffer *frame_boundary(struct go7007 *go, struct go7007_buffer *vb) 448 { 449 u32 *bytesused = &vb->vb.v4l2_planes[0].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 } 461 462 vb->vb.v4l2_buf.sequence = go->next_seq++; 463 if (vb->modet_active && *bytesused + 216 < GO7007_BUF_SIZE) 464 go7007_motion_regions(go, vb); 465 else 466 go7007_set_motion_regions(go, vb, 0); 467 468 v4l2_get_timestamp(&vb->vb.v4l2_buf.timestamp); 469 vb_tmp = vb; 470 spin_lock(&go->spinlock); 471 list_del(&vb->list); 472 if (list_empty(&go->vidq_active)) 473 vb = NULL; 474 else 475 vb = list_first_entry(&go->vidq_active, struct go7007_buffer, list); 476 go->active_buf = vb; 477 spin_unlock(&go->spinlock); 478 vb2_buffer_done(&vb_tmp->vb, VB2_BUF_STATE_DONE); 479 return vb; 480 } 481 482 static void write_bitmap_word(struct go7007 *go) 483 { 484 int x, y, i, stride = ((go->width >> 4) + 7) >> 3; 485 486 for (i = 0; i < 16; ++i) { 487 y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4); 488 x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4); 489 if (stride * y + (x >> 3) < sizeof(go->active_map)) 490 go->active_map[stride * y + (x >> 3)] |= 491 (go->modet_word & 1) << (x & 0x7); 492 go->modet_word >>= 1; 493 } 494 } 495 496 /* 497 * Parse a chunk of the video stream into frames. The frames are not 498 * delimited by the hardware, so we have to parse the frame boundaries 499 * based on the type of video stream we're receiving. 500 */ 501 void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length) 502 { 503 struct go7007_buffer *vb = go->active_buf; 504 int i, seq_start_code = -1, gop_start_code = -1, frame_start_code = -1; 505 506 switch (go->format) { 507 case V4L2_PIX_FMT_MPEG4: 508 seq_start_code = 0xB0; 509 gop_start_code = 0xB3; 510 frame_start_code = 0xB6; 511 break; 512 case V4L2_PIX_FMT_MPEG1: 513 case V4L2_PIX_FMT_MPEG2: 514 seq_start_code = 0xB3; 515 gop_start_code = 0xB8; 516 frame_start_code = 0x00; 517 break; 518 } 519 520 for (i = 0; i < length; ++i) { 521 if (vb && vb->vb.v4l2_planes[0].bytesused >= GO7007_BUF_SIZE - 3) { 522 v4l2_info(&go->v4l2_dev, "dropping oversized frame\n"); 523 vb->vb.v4l2_planes[0].bytesused = 0; 524 vb->frame_offset = 0; 525 vb->modet_active = 0; 526 vb = go->active_buf = NULL; 527 } 528 529 switch (go->state) { 530 case STATE_DATA: 531 switch (buf[i]) { 532 case 0x00: 533 go->state = STATE_00; 534 break; 535 case 0xFF: 536 go->state = STATE_FF; 537 break; 538 default: 539 store_byte(vb, buf[i]); 540 break; 541 } 542 break; 543 case STATE_00: 544 switch (buf[i]) { 545 case 0x00: 546 go->state = STATE_00_00; 547 break; 548 case 0xFF: 549 store_byte(vb, 0x00); 550 go->state = STATE_FF; 551 break; 552 default: 553 store_byte(vb, 0x00); 554 store_byte(vb, buf[i]); 555 go->state = STATE_DATA; 556 break; 557 } 558 break; 559 case STATE_00_00: 560 switch (buf[i]) { 561 case 0x00: 562 store_byte(vb, 0x00); 563 /* go->state remains STATE_00_00 */ 564 break; 565 case 0x01: 566 go->state = STATE_00_00_01; 567 break; 568 case 0xFF: 569 store_byte(vb, 0x00); 570 store_byte(vb, 0x00); 571 go->state = STATE_FF; 572 break; 573 default: 574 store_byte(vb, 0x00); 575 store_byte(vb, 0x00); 576 store_byte(vb, buf[i]); 577 go->state = STATE_DATA; 578 break; 579 } 580 break; 581 case STATE_00_00_01: 582 if (buf[i] == 0xF8 && go->modet_enable == 0) { 583 /* MODET start code, but MODET not enabled */ 584 store_byte(vb, 0x00); 585 store_byte(vb, 0x00); 586 store_byte(vb, 0x01); 587 store_byte(vb, 0xF8); 588 go->state = STATE_DATA; 589 break; 590 } 591 /* If this is the start of a new MPEG frame, 592 * get a new buffer */ 593 if ((go->format == V4L2_PIX_FMT_MPEG1 || 594 go->format == V4L2_PIX_FMT_MPEG2 || 595 go->format == V4L2_PIX_FMT_MPEG4) && 596 (buf[i] == seq_start_code || 597 buf[i] == gop_start_code || 598 buf[i] == frame_start_code)) { 599 if (vb == NULL || go->seen_frame) 600 vb = frame_boundary(go, vb); 601 go->seen_frame = buf[i] == frame_start_code; 602 if (vb && go->seen_frame) 603 vb->frame_offset = vb->vb.v4l2_planes[0].bytesused; 604 } 605 /* Handle any special chunk types, or just write the 606 * start code to the (potentially new) buffer */ 607 switch (buf[i]) { 608 case 0xF5: /* timestamp */ 609 go->parse_length = 12; 610 go->state = STATE_UNPARSED; 611 break; 612 case 0xF6: /* vbi */ 613 go->state = STATE_VBI_LEN_A; 614 break; 615 case 0xF8: /* MD map */ 616 go->parse_length = 0; 617 memset(go->active_map, 0, 618 sizeof(go->active_map)); 619 go->state = STATE_MODET_MAP; 620 break; 621 case 0xFF: /* Potential JPEG start code */ 622 store_byte(vb, 0x00); 623 store_byte(vb, 0x00); 624 store_byte(vb, 0x01); 625 go->state = STATE_FF; 626 break; 627 default: 628 store_byte(vb, 0x00); 629 store_byte(vb, 0x00); 630 store_byte(vb, 0x01); 631 store_byte(vb, buf[i]); 632 go->state = STATE_DATA; 633 break; 634 } 635 break; 636 case STATE_FF: 637 switch (buf[i]) { 638 case 0x00: 639 store_byte(vb, 0xFF); 640 go->state = STATE_00; 641 break; 642 case 0xFF: 643 store_byte(vb, 0xFF); 644 /* go->state remains STATE_FF */ 645 break; 646 case 0xD8: 647 if (go->format == V4L2_PIX_FMT_MJPEG) 648 vb = frame_boundary(go, vb); 649 /* fall through */ 650 default: 651 store_byte(vb, 0xFF); 652 store_byte(vb, buf[i]); 653 go->state = STATE_DATA; 654 break; 655 } 656 break; 657 case STATE_VBI_LEN_A: 658 go->parse_length = buf[i] << 8; 659 go->state = STATE_VBI_LEN_B; 660 break; 661 case STATE_VBI_LEN_B: 662 go->parse_length |= buf[i]; 663 if (go->parse_length > 0) 664 go->state = STATE_UNPARSED; 665 else 666 go->state = STATE_DATA; 667 break; 668 case STATE_MODET_MAP: 669 if (go->parse_length < 204) { 670 if (go->parse_length & 1) { 671 go->modet_word |= buf[i]; 672 write_bitmap_word(go); 673 } else 674 go->modet_word = buf[i] << 8; 675 } else if (go->parse_length == 207 && vb) { 676 vb->modet_active = buf[i]; 677 } 678 if (++go->parse_length == 208) 679 go->state = STATE_DATA; 680 break; 681 case STATE_UNPARSED: 682 if (--go->parse_length == 0) 683 go->state = STATE_DATA; 684 break; 685 } 686 } 687 } 688 EXPORT_SYMBOL(go7007_parse_video_stream); 689 690 /* 691 * Allocate a new go7007 struct. Used by the hardware-specific probe. 692 */ 693 struct go7007 *go7007_alloc(const struct go7007_board_info *board, 694 struct device *dev) 695 { 696 struct go7007 *go; 697 int i; 698 699 go = kzalloc(sizeof(struct go7007), GFP_KERNEL); 700 if (go == NULL) 701 return NULL; 702 go->dev = dev; 703 go->board_info = board; 704 go->board_id = 0; 705 go->tuner_type = -1; 706 go->channel_number = 0; 707 go->name[0] = 0; 708 mutex_init(&go->hw_lock); 709 init_waitqueue_head(&go->frame_waitq); 710 spin_lock_init(&go->spinlock); 711 go->status = STATUS_INIT; 712 memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter)); 713 go->i2c_adapter_online = 0; 714 go->interrupt_available = 0; 715 init_waitqueue_head(&go->interrupt_waitq); 716 go->input = 0; 717 go7007_update_board(go); 718 go->encoder_h_halve = 0; 719 go->encoder_v_halve = 0; 720 go->encoder_subsample = 0; 721 go->format = V4L2_PIX_FMT_MJPEG; 722 go->bitrate = 1500000; 723 go->fps_scale = 1; 724 go->pali = 0; 725 go->aspect_ratio = GO7007_RATIO_1_1; 726 go->gop_size = 0; 727 go->ipb = 0; 728 go->closed_gop = 0; 729 go->repeat_seqhead = 0; 730 go->seq_header_enable = 0; 731 go->gop_header_enable = 0; 732 go->dvd_mode = 0; 733 go->interlace_coding = 0; 734 for (i = 0; i < 4; ++i) 735 go->modet[i].enable = 0; 736 for (i = 0; i < 1624; ++i) 737 go->modet_map[i] = 0; 738 go->audio_deliver = NULL; 739 go->audio_enabled = 0; 740 741 return go; 742 } 743 EXPORT_SYMBOL(go7007_alloc); 744 745 void go7007_update_board(struct go7007 *go) 746 { 747 const struct go7007_board_info *board = go->board_info; 748 749 if (board->sensor_flags & GO7007_SENSOR_TV) { 750 go->standard = GO7007_STD_NTSC; 751 go->std = V4L2_STD_NTSC_M; 752 go->width = 720; 753 go->height = 480; 754 go->sensor_framerate = 30000; 755 } else { 756 go->standard = GO7007_STD_OTHER; 757 go->width = board->sensor_width; 758 go->height = board->sensor_height; 759 go->sensor_framerate = board->sensor_framerate; 760 } 761 go->encoder_v_offset = board->sensor_v_offset; 762 go->encoder_h_offset = board->sensor_h_offset; 763 } 764 EXPORT_SYMBOL(go7007_update_board); 765 766 MODULE_LICENSE("GPL v2"); 767