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; 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.v4l2_planes[0].bytesused; 462 463 vb->vb.v4l2_buf.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 v4l2_get_timestamp(&vb->vb.v4l2_buf.timestamp); 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, struct go7007_buffer, list); 477 go->active_buf = vb; 478 spin_unlock(&go->spinlock); 479 vb2_buffer_done(&vb_tmp->vb, VB2_BUF_STATE_DONE); 480 return vb; 481 } 482 483 static void write_bitmap_word(struct go7007 *go) 484 { 485 int x, y, i, stride = ((go->width >> 4) + 7) >> 3; 486 487 for (i = 0; i < 16; ++i) { 488 y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4); 489 x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4); 490 if (stride * y + (x >> 3) < sizeof(go->active_map)) 491 go->active_map[stride * y + (x >> 3)] |= 492 (go->modet_word & 1) << (x & 0x7); 493 go->modet_word >>= 1; 494 } 495 } 496 497 /* 498 * Parse a chunk of the video stream into frames. The frames are not 499 * delimited by the hardware, so we have to parse the frame boundaries 500 * based on the type of video stream we're receiving. 501 */ 502 void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length) 503 { 504 struct go7007_buffer *vb = go->active_buf; 505 int i, seq_start_code = -1, gop_start_code = -1, frame_start_code = -1; 506 507 switch (go->format) { 508 case V4L2_PIX_FMT_MPEG4: 509 seq_start_code = 0xB0; 510 gop_start_code = 0xB3; 511 frame_start_code = 0xB6; 512 break; 513 case V4L2_PIX_FMT_MPEG1: 514 case V4L2_PIX_FMT_MPEG2: 515 seq_start_code = 0xB3; 516 gop_start_code = 0xB8; 517 frame_start_code = 0x00; 518 break; 519 } 520 521 for (i = 0; i < length; ++i) { 522 if (vb && vb->vb.v4l2_planes[0].bytesused >= GO7007_BUF_SIZE - 3) { 523 v4l2_info(&go->v4l2_dev, "dropping oversized frame\n"); 524 vb->vb.v4l2_planes[0].bytesused = 0; 525 vb->frame_offset = 0; 526 vb->modet_active = 0; 527 vb = go->active_buf = NULL; 528 } 529 530 switch (go->state) { 531 case STATE_DATA: 532 switch (buf[i]) { 533 case 0x00: 534 go->state = STATE_00; 535 break; 536 case 0xFF: 537 go->state = STATE_FF; 538 break; 539 default: 540 store_byte(vb, buf[i]); 541 break; 542 } 543 break; 544 case STATE_00: 545 switch (buf[i]) { 546 case 0x00: 547 go->state = STATE_00_00; 548 break; 549 case 0xFF: 550 store_byte(vb, 0x00); 551 go->state = STATE_FF; 552 break; 553 default: 554 store_byte(vb, 0x00); 555 store_byte(vb, buf[i]); 556 go->state = STATE_DATA; 557 break; 558 } 559 break; 560 case STATE_00_00: 561 switch (buf[i]) { 562 case 0x00: 563 store_byte(vb, 0x00); 564 /* go->state remains STATE_00_00 */ 565 break; 566 case 0x01: 567 go->state = STATE_00_00_01; 568 break; 569 case 0xFF: 570 store_byte(vb, 0x00); 571 store_byte(vb, 0x00); 572 go->state = STATE_FF; 573 break; 574 default: 575 store_byte(vb, 0x00); 576 store_byte(vb, 0x00); 577 store_byte(vb, buf[i]); 578 go->state = STATE_DATA; 579 break; 580 } 581 break; 582 case STATE_00_00_01: 583 if (buf[i] == 0xF8 && go->modet_enable == 0) { 584 /* MODET start code, but MODET not enabled */ 585 store_byte(vb, 0x00); 586 store_byte(vb, 0x00); 587 store_byte(vb, 0x01); 588 store_byte(vb, 0xF8); 589 go->state = STATE_DATA; 590 break; 591 } 592 /* If this is the start of a new MPEG frame, 593 * get a new buffer */ 594 if ((go->format == V4L2_PIX_FMT_MPEG1 || 595 go->format == V4L2_PIX_FMT_MPEG2 || 596 go->format == V4L2_PIX_FMT_MPEG4) && 597 (buf[i] == seq_start_code || 598 buf[i] == gop_start_code || 599 buf[i] == frame_start_code)) { 600 if (vb == NULL || go->seen_frame) 601 vb = frame_boundary(go, vb); 602 go->seen_frame = buf[i] == frame_start_code; 603 if (vb && go->seen_frame) 604 vb->frame_offset = vb->vb.v4l2_planes[0].bytesused; 605 } 606 /* Handle any special chunk types, or just write the 607 * start code to the (potentially new) buffer */ 608 switch (buf[i]) { 609 case 0xF5: /* timestamp */ 610 go->parse_length = 12; 611 go->state = STATE_UNPARSED; 612 break; 613 case 0xF6: /* vbi */ 614 go->state = STATE_VBI_LEN_A; 615 break; 616 case 0xF8: /* MD map */ 617 go->parse_length = 0; 618 memset(go->active_map, 0, 619 sizeof(go->active_map)); 620 go->state = STATE_MODET_MAP; 621 break; 622 case 0xFF: /* Potential JPEG start code */ 623 store_byte(vb, 0x00); 624 store_byte(vb, 0x00); 625 store_byte(vb, 0x01); 626 go->state = STATE_FF; 627 break; 628 default: 629 store_byte(vb, 0x00); 630 store_byte(vb, 0x00); 631 store_byte(vb, 0x01); 632 store_byte(vb, buf[i]); 633 go->state = STATE_DATA; 634 break; 635 } 636 break; 637 case STATE_FF: 638 switch (buf[i]) { 639 case 0x00: 640 store_byte(vb, 0xFF); 641 go->state = STATE_00; 642 break; 643 case 0xFF: 644 store_byte(vb, 0xFF); 645 /* go->state remains STATE_FF */ 646 break; 647 case 0xD8: 648 if (go->format == V4L2_PIX_FMT_MJPEG) 649 vb = frame_boundary(go, vb); 650 /* fall through */ 651 default: 652 store_byte(vb, 0xFF); 653 store_byte(vb, buf[i]); 654 go->state = STATE_DATA; 655 break; 656 } 657 break; 658 case STATE_VBI_LEN_A: 659 go->parse_length = buf[i] << 8; 660 go->state = STATE_VBI_LEN_B; 661 break; 662 case STATE_VBI_LEN_B: 663 go->parse_length |= buf[i]; 664 if (go->parse_length > 0) 665 go->state = STATE_UNPARSED; 666 else 667 go->state = STATE_DATA; 668 break; 669 case STATE_MODET_MAP: 670 if (go->parse_length < 204) { 671 if (go->parse_length & 1) { 672 go->modet_word |= buf[i]; 673 write_bitmap_word(go); 674 } else 675 go->modet_word = buf[i] << 8; 676 } else if (go->parse_length == 207 && vb) { 677 vb->modet_active = buf[i]; 678 } 679 if (++go->parse_length == 208) 680 go->state = STATE_DATA; 681 break; 682 case STATE_UNPARSED: 683 if (--go->parse_length == 0) 684 go->state = STATE_DATA; 685 break; 686 } 687 } 688 } 689 EXPORT_SYMBOL(go7007_parse_video_stream); 690 691 /* 692 * Allocate a new go7007 struct. Used by the hardware-specific probe. 693 */ 694 struct go7007 *go7007_alloc(const struct go7007_board_info *board, 695 struct device *dev) 696 { 697 struct go7007 *go; 698 int i; 699 700 go = kzalloc(sizeof(struct go7007), GFP_KERNEL); 701 if (go == NULL) 702 return NULL; 703 go->dev = dev; 704 go->board_info = board; 705 go->board_id = 0; 706 go->tuner_type = -1; 707 go->channel_number = 0; 708 go->name[0] = 0; 709 mutex_init(&go->hw_lock); 710 init_waitqueue_head(&go->frame_waitq); 711 spin_lock_init(&go->spinlock); 712 go->status = STATUS_INIT; 713 memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter)); 714 go->i2c_adapter_online = 0; 715 go->interrupt_available = 0; 716 init_waitqueue_head(&go->interrupt_waitq); 717 go->input = 0; 718 go7007_update_board(go); 719 go->encoder_h_halve = 0; 720 go->encoder_v_halve = 0; 721 go->encoder_subsample = 0; 722 go->format = V4L2_PIX_FMT_MJPEG; 723 go->bitrate = 1500000; 724 go->fps_scale = 1; 725 go->pali = 0; 726 go->aspect_ratio = GO7007_RATIO_1_1; 727 go->gop_size = 0; 728 go->ipb = 0; 729 go->closed_gop = 0; 730 go->repeat_seqhead = 0; 731 go->seq_header_enable = 0; 732 go->gop_header_enable = 0; 733 go->dvd_mode = 0; 734 go->interlace_coding = 0; 735 for (i = 0; i < 4; ++i) 736 go->modet[i].enable = 0; 737 for (i = 0; i < 1624; ++i) 738 go->modet_map[i] = 0; 739 go->audio_deliver = NULL; 740 go->audio_enabled = 0; 741 742 return go; 743 } 744 EXPORT_SYMBOL(go7007_alloc); 745 746 void go7007_update_board(struct go7007 *go) 747 { 748 const struct go7007_board_info *board = go->board_info; 749 750 if (board->sensor_flags & GO7007_SENSOR_TV) { 751 go->standard = GO7007_STD_NTSC; 752 go->std = V4L2_STD_NTSC_M; 753 go->width = 720; 754 go->height = 480; 755 go->sensor_framerate = 30000; 756 } else { 757 go->standard = GO7007_STD_OTHER; 758 go->width = board->sensor_width; 759 go->height = board->sensor_height; 760 go->sensor_framerate = board->sensor_framerate; 761 } 762 go->encoder_v_offset = board->sensor_v_offset; 763 go->encoder_h_offset = board->sensor_h_offset; 764 } 765 EXPORT_SYMBOL(go7007_update_board); 766 767 MODULE_LICENSE("GPL v2"); 768