vpif_capture.c revision 46656afa8a9a410b7939b248712e4e48921929da
1/* 2 * Copyright (C) 2009 Texas Instruments 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 as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 * 18 * TODO : add support for VBI & HBI data service 19 * add static buffer allocation 20 */ 21#include <linux/kernel.h> 22#include <linux/init.h> 23#include <linux/module.h> 24#include <linux/errno.h> 25#include <linux/fs.h> 26#include <linux/mm.h> 27#include <linux/interrupt.h> 28#include <linux/workqueue.h> 29#include <linux/string.h> 30#include <linux/videodev2.h> 31#include <linux/wait.h> 32#include <linux/time.h> 33#include <linux/i2c.h> 34#include <linux/platform_device.h> 35#include <linux/io.h> 36#include <linux/version.h> 37#include <linux/slab.h> 38#include <media/v4l2-device.h> 39#include <media/v4l2-ioctl.h> 40#include <media/v4l2-chip-ident.h> 41 42#include "vpif_capture.h" 43#include "vpif.h" 44 45MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver"); 46MODULE_LICENSE("GPL"); 47 48#define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg) 49#define vpif_dbg(level, debug, fmt, arg...) \ 50 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg) 51 52static int debug = 1; 53static u32 ch0_numbuffers = 3; 54static u32 ch1_numbuffers = 3; 55static u32 ch0_bufsize = 1920 * 1080 * 2; 56static u32 ch1_bufsize = 720 * 576 * 2; 57 58module_param(debug, int, 0644); 59module_param(ch0_numbuffers, uint, S_IRUGO); 60module_param(ch1_numbuffers, uint, S_IRUGO); 61module_param(ch0_bufsize, uint, S_IRUGO); 62module_param(ch1_bufsize, uint, S_IRUGO); 63 64MODULE_PARM_DESC(debug, "Debug level 0-1"); 65MODULE_PARM_DESC(ch2_numbuffers, "Channel0 buffer count (default:3)"); 66MODULE_PARM_DESC(ch3_numbuffers, "Channel1 buffer count (default:3)"); 67MODULE_PARM_DESC(ch2_bufsize, "Channel0 buffer size (default:1920 x 1080 x 2)"); 68MODULE_PARM_DESC(ch3_bufsize, "Channel1 buffer size (default:720 x 576 x 2)"); 69 70static struct vpif_config_params config_params = { 71 .min_numbuffers = 3, 72 .numbuffers[0] = 3, 73 .numbuffers[1] = 3, 74 .min_bufsize[0] = 720 * 480 * 2, 75 .min_bufsize[1] = 720 * 480 * 2, 76 .channel_bufsize[0] = 1920 * 1080 * 2, 77 .channel_bufsize[1] = 720 * 576 * 2, 78}; 79 80/* global variables */ 81static struct vpif_device vpif_obj = { {NULL} }; 82static struct device *vpif_dev; 83 84/** 85 * vpif_uservirt_to_phys : translate user/virtual address to phy address 86 * @virtp: user/virtual address 87 * 88 * This inline function is used to convert user space virtual address to 89 * physical address. 90 */ 91static inline u32 vpif_uservirt_to_phys(u32 virtp) 92{ 93 unsigned long physp = 0; 94 struct mm_struct *mm = current->mm; 95 struct vm_area_struct *vma; 96 97 vma = find_vma(mm, virtp); 98 99 /* For kernel direct-mapped memory, take the easy way */ 100 if (virtp >= PAGE_OFFSET) 101 physp = virt_to_phys((void *)virtp); 102 else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff)) 103 /** 104 * this will catch, kernel-allocated, mmaped-to-usermode 105 * addresses 106 */ 107 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start); 108 else { 109 /* otherwise, use get_user_pages() for general userland pages */ 110 int res, nr_pages = 1; 111 struct page *pages; 112 113 down_read(¤t->mm->mmap_sem); 114 115 res = get_user_pages(current, current->mm, 116 virtp, nr_pages, 1, 0, &pages, NULL); 117 up_read(¤t->mm->mmap_sem); 118 119 if (res == nr_pages) 120 physp = __pa(page_address(&pages[0]) + 121 (virtp & ~PAGE_MASK)); 122 else { 123 vpif_err("get_user_pages failed\n"); 124 return 0; 125 } 126 } 127 return physp; 128} 129 130/** 131 * buffer_prepare : callback function for buffer prepare 132 * @q : buffer queue ptr 133 * @vb: ptr to video buffer 134 * @field: field info 135 * 136 * This is the callback function for buffer prepare when videobuf_qbuf() 137 * function is called. The buffer is prepared and user space virtual address 138 * or user address is converted into physical address 139 */ 140static int vpif_buffer_prepare(struct videobuf_queue *q, 141 struct videobuf_buffer *vb, 142 enum v4l2_field field) 143{ 144 /* Get the file handle object and channel object */ 145 struct vpif_fh *fh = q->priv_data; 146 struct channel_obj *ch = fh->channel; 147 struct common_obj *common; 148 unsigned long addr; 149 150 151 vpif_dbg(2, debug, "vpif_buffer_prepare\n"); 152 153 common = &ch->common[VPIF_VIDEO_INDEX]; 154 155 /* If buffer is not initialized, initialize it */ 156 if (VIDEOBUF_NEEDS_INIT == vb->state) { 157 vb->width = common->width; 158 vb->height = common->height; 159 vb->size = vb->width * vb->height; 160 vb->field = field; 161 } 162 vb->state = VIDEOBUF_PREPARED; 163 /** 164 * if user pointer memory mechanism is used, get the physical 165 * address of the buffer 166 */ 167 if (V4L2_MEMORY_USERPTR == common->memory) { 168 if (0 == vb->baddr) { 169 vpif_dbg(1, debug, "buffer address is 0\n"); 170 return -EINVAL; 171 172 } 173 vb->boff = vpif_uservirt_to_phys(vb->baddr); 174 if (!IS_ALIGNED(vb->boff, 8)) 175 goto exit; 176 } 177 178 addr = vb->boff; 179 if (q->streaming) { 180 if (!IS_ALIGNED((addr + common->ytop_off), 8) || 181 !IS_ALIGNED((addr + common->ybtm_off), 8) || 182 !IS_ALIGNED((addr + common->ctop_off), 8) || 183 !IS_ALIGNED((addr + common->cbtm_off), 8)) 184 goto exit; 185 } 186 return 0; 187exit: 188 vpif_dbg(1, debug, "buffer_prepare:offset is not aligned to 8 bytes\n"); 189 return -EINVAL; 190} 191 192/** 193 * vpif_buffer_setup : Callback function for buffer setup. 194 * @q: buffer queue ptr 195 * @count: number of buffers 196 * @size: size of the buffer 197 * 198 * This callback function is called when reqbuf() is called to adjust 199 * the buffer count and buffer size 200 */ 201static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count, 202 unsigned int *size) 203{ 204 /* Get the file handle object and channel object */ 205 struct vpif_fh *fh = q->priv_data; 206 struct channel_obj *ch = fh->channel; 207 struct common_obj *common; 208 209 common = &ch->common[VPIF_VIDEO_INDEX]; 210 211 vpif_dbg(2, debug, "vpif_buffer_setup\n"); 212 213 /* If memory type is not mmap, return */ 214 if (V4L2_MEMORY_MMAP != common->memory) 215 return 0; 216 217 /* Calculate the size of the buffer */ 218 *size = config_params.channel_bufsize[ch->channel_id]; 219 220 if (*count < config_params.min_numbuffers) 221 *count = config_params.min_numbuffers; 222 return 0; 223} 224 225/** 226 * vpif_buffer_queue : Callback function to add buffer to DMA queue 227 * @q: ptr to videobuf_queue 228 * @vb: ptr to videobuf_buffer 229 */ 230static void vpif_buffer_queue(struct videobuf_queue *q, 231 struct videobuf_buffer *vb) 232{ 233 /* Get the file handle object and channel object */ 234 struct vpif_fh *fh = q->priv_data; 235 struct channel_obj *ch = fh->channel; 236 struct common_obj *common; 237 238 common = &ch->common[VPIF_VIDEO_INDEX]; 239 240 vpif_dbg(2, debug, "vpif_buffer_queue\n"); 241 242 /* add the buffer to the DMA queue */ 243 list_add_tail(&vb->queue, &common->dma_queue); 244 /* Change state of the buffer */ 245 vb->state = VIDEOBUF_QUEUED; 246} 247 248/** 249 * vpif_buffer_release : Callback function to free buffer 250 * @q: buffer queue ptr 251 * @vb: ptr to video buffer 252 * 253 * This function is called from the videobuf layer to free memory 254 * allocated to the buffers 255 */ 256static void vpif_buffer_release(struct videobuf_queue *q, 257 struct videobuf_buffer *vb) 258{ 259 /* Get the file handle object and channel object */ 260 struct vpif_fh *fh = q->priv_data; 261 struct channel_obj *ch = fh->channel; 262 struct common_obj *common; 263 264 common = &ch->common[VPIF_VIDEO_INDEX]; 265 266 videobuf_dma_contig_free(q, vb); 267 vb->state = VIDEOBUF_NEEDS_INIT; 268} 269 270static struct videobuf_queue_ops video_qops = { 271 .buf_setup = vpif_buffer_setup, 272 .buf_prepare = vpif_buffer_prepare, 273 .buf_queue = vpif_buffer_queue, 274 .buf_release = vpif_buffer_release, 275}; 276 277static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = 278 { {1, 1} }; 279 280/** 281 * vpif_process_buffer_complete: process a completed buffer 282 * @common: ptr to common channel object 283 * 284 * This function time stamp the buffer and mark it as DONE. It also 285 * wake up any process waiting on the QUEUE and set the next buffer 286 * as current 287 */ 288static void vpif_process_buffer_complete(struct common_obj *common) 289{ 290 do_gettimeofday(&common->cur_frm->ts); 291 common->cur_frm->state = VIDEOBUF_DONE; 292 wake_up_interruptible(&common->cur_frm->done); 293 /* Make curFrm pointing to nextFrm */ 294 common->cur_frm = common->next_frm; 295} 296 297/** 298 * vpif_schedule_next_buffer: set next buffer address for capture 299 * @common : ptr to common channel object 300 * 301 * This function will get next buffer from the dma queue and 302 * set the buffer address in the vpif register for capture. 303 * the buffer is marked active 304 */ 305static void vpif_schedule_next_buffer(struct common_obj *common) 306{ 307 unsigned long addr = 0; 308 309 common->next_frm = list_entry(common->dma_queue.next, 310 struct videobuf_buffer, queue); 311 /* Remove that buffer from the buffer queue */ 312 list_del(&common->next_frm->queue); 313 common->next_frm->state = VIDEOBUF_ACTIVE; 314 if (V4L2_MEMORY_USERPTR == common->memory) 315 addr = common->next_frm->boff; 316 else 317 addr = videobuf_to_dma_contig(common->next_frm); 318 319 /* Set top and bottom field addresses in VPIF registers */ 320 common->set_addr(addr + common->ytop_off, 321 addr + common->ybtm_off, 322 addr + common->ctop_off, 323 addr + common->cbtm_off); 324} 325 326/** 327 * vpif_channel_isr : ISR handler for vpif capture 328 * @irq: irq number 329 * @dev_id: dev_id ptr 330 * 331 * It changes status of the captured buffer, takes next buffer from the queue 332 * and sets its address in VPIF registers 333 */ 334static irqreturn_t vpif_channel_isr(int irq, void *dev_id) 335{ 336 struct vpif_device *dev = &vpif_obj; 337 struct common_obj *common; 338 struct channel_obj *ch; 339 enum v4l2_field field; 340 int channel_id = 0; 341 int fid = -1, i; 342 343 channel_id = *(int *)(dev_id); 344 ch = dev->dev[channel_id]; 345 346 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field; 347 348 for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) { 349 common = &ch->common[i]; 350 /* skip If streaming is not started in this channel */ 351 if (0 == common->started) 352 continue; 353 354 /* Check the field format */ 355 if (1 == ch->vpifparams.std_info.frm_fmt) { 356 /* Progressive mode */ 357 if (list_empty(&common->dma_queue)) 358 continue; 359 360 if (!channel_first_int[i][channel_id]) 361 vpif_process_buffer_complete(common); 362 363 channel_first_int[i][channel_id] = 0; 364 365 vpif_schedule_next_buffer(common); 366 367 368 channel_first_int[i][channel_id] = 0; 369 } else { 370 /** 371 * Interlaced mode. If it is first interrupt, ignore 372 * it 373 */ 374 if (channel_first_int[i][channel_id]) { 375 channel_first_int[i][channel_id] = 0; 376 continue; 377 } 378 if (0 == i) { 379 ch->field_id ^= 1; 380 /* Get field id from VPIF registers */ 381 fid = vpif_channel_getfid(ch->channel_id); 382 if (fid != ch->field_id) { 383 /** 384 * If field id does not match stored 385 * field id, make them in sync 386 */ 387 if (0 == fid) 388 ch->field_id = fid; 389 return IRQ_HANDLED; 390 } 391 } 392 /* device field id and local field id are in sync */ 393 if (0 == fid) { 394 /* this is even field */ 395 if (common->cur_frm == common->next_frm) 396 continue; 397 398 /* mark the current buffer as done */ 399 vpif_process_buffer_complete(common); 400 } else if (1 == fid) { 401 /* odd field */ 402 if (list_empty(&common->dma_queue) || 403 (common->cur_frm != common->next_frm)) 404 continue; 405 406 vpif_schedule_next_buffer(common); 407 } 408 } 409 } 410 return IRQ_HANDLED; 411} 412 413/** 414 * vpif_update_std_info() - update standard related info 415 * @ch: ptr to channel object 416 * 417 * For a given standard selected by application, update values 418 * in the device data structures 419 */ 420static int vpif_update_std_info(struct channel_obj *ch) 421{ 422 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 423 struct vpif_params *vpifparams = &ch->vpifparams; 424 const struct vpif_channel_config_params *config; 425 struct vpif_channel_config_params *std_info = &vpifparams->std_info; 426 struct video_obj *vid_ch = &ch->video; 427 int index; 428 429 vpif_dbg(2, debug, "vpif_update_std_info\n"); 430 431 for (index = 0; index < vpif_ch_params_count; index++) { 432 config = &ch_params[index]; 433 if (config->hd_sd == 0) { 434 vpif_dbg(2, debug, "SD format\n"); 435 if (config->stdid & vid_ch->stdid) { 436 memcpy(std_info, config, sizeof(*config)); 437 break; 438 } 439 } else { 440 vpif_dbg(2, debug, "HD format\n"); 441 if (config->dv_preset == vid_ch->dv_preset) { 442 memcpy(std_info, config, sizeof(*config)); 443 break; 444 } 445 } 446 } 447 448 /* standard not found */ 449 if (index == vpif_ch_params_count) 450 return -EINVAL; 451 452 common->fmt.fmt.pix.width = std_info->width; 453 common->width = std_info->width; 454 common->fmt.fmt.pix.height = std_info->height; 455 common->height = std_info->height; 456 common->fmt.fmt.pix.bytesperline = std_info->width; 457 vpifparams->video_params.hpitch = std_info->width; 458 vpifparams->video_params.storage_mode = std_info->frm_fmt; 459 460 return 0; 461} 462 463/** 464 * vpif_calculate_offsets : This function calculates buffers offsets 465 * @ch : ptr to channel object 466 * 467 * This function calculates buffer offsets for Y and C in the top and 468 * bottom field 469 */ 470static void vpif_calculate_offsets(struct channel_obj *ch) 471{ 472 unsigned int hpitch, vpitch, sizeimage; 473 struct video_obj *vid_ch = &(ch->video); 474 struct vpif_params *vpifparams = &ch->vpifparams; 475 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 476 enum v4l2_field field = common->fmt.fmt.pix.field; 477 478 vpif_dbg(2, debug, "vpif_calculate_offsets\n"); 479 480 if (V4L2_FIELD_ANY == field) { 481 if (vpifparams->std_info.frm_fmt) 482 vid_ch->buf_field = V4L2_FIELD_NONE; 483 else 484 vid_ch->buf_field = V4L2_FIELD_INTERLACED; 485 } else 486 vid_ch->buf_field = common->fmt.fmt.pix.field; 487 488 if (V4L2_MEMORY_USERPTR == common->memory) 489 sizeimage = common->fmt.fmt.pix.sizeimage; 490 else 491 sizeimage = config_params.channel_bufsize[ch->channel_id]; 492 493 hpitch = common->fmt.fmt.pix.bytesperline; 494 vpitch = sizeimage / (hpitch * 2); 495 496 if ((V4L2_FIELD_NONE == vid_ch->buf_field) || 497 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { 498 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ 499 common->ytop_off = 0; 500 common->ybtm_off = hpitch; 501 common->ctop_off = sizeimage / 2; 502 common->cbtm_off = sizeimage / 2 + hpitch; 503 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) { 504 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ 505 common->ytop_off = 0; 506 common->ybtm_off = sizeimage / 4; 507 common->ctop_off = sizeimage / 2; 508 common->cbtm_off = common->ctop_off + sizeimage / 4; 509 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) { 510 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ 511 common->ybtm_off = 0; 512 common->ytop_off = sizeimage / 4; 513 common->cbtm_off = sizeimage / 2; 514 common->ctop_off = common->cbtm_off + sizeimage / 4; 515 } 516 if ((V4L2_FIELD_NONE == vid_ch->buf_field) || 517 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) 518 vpifparams->video_params.storage_mode = 1; 519 else 520 vpifparams->video_params.storage_mode = 0; 521 522 if (1 == vpifparams->std_info.frm_fmt) 523 vpifparams->video_params.hpitch = 524 common->fmt.fmt.pix.bytesperline; 525 else { 526 if ((field == V4L2_FIELD_ANY) 527 || (field == V4L2_FIELD_INTERLACED)) 528 vpifparams->video_params.hpitch = 529 common->fmt.fmt.pix.bytesperline * 2; 530 else 531 vpifparams->video_params.hpitch = 532 common->fmt.fmt.pix.bytesperline; 533 } 534 535 ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid; 536} 537 538/** 539 * vpif_config_format: configure default frame format in the device 540 * ch : ptr to channel object 541 */ 542static void vpif_config_format(struct channel_obj *ch) 543{ 544 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 545 546 vpif_dbg(2, debug, "vpif_config_format\n"); 547 548 common->fmt.fmt.pix.field = V4L2_FIELD_ANY; 549 if (config_params.numbuffers[ch->channel_id] == 0) 550 common->memory = V4L2_MEMORY_USERPTR; 551 else 552 common->memory = V4L2_MEMORY_MMAP; 553 554 common->fmt.fmt.pix.sizeimage 555 = config_params.channel_bufsize[ch->channel_id]; 556 557 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) 558 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8; 559 else 560 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P; 561 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 562} 563 564/** 565 * vpif_get_default_field() - Get default field type based on interface 566 * @vpif_params - ptr to vpif params 567 */ 568static inline enum v4l2_field vpif_get_default_field( 569 struct vpif_interface *iface) 570{ 571 return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE : 572 V4L2_FIELD_INTERLACED; 573} 574 575/** 576 * vpif_check_format() - check given pixel format for compatibility 577 * @ch - channel ptr 578 * @pixfmt - Given pixel format 579 * @update - update the values as per hardware requirement 580 * 581 * Check the application pixel format for S_FMT and update the input 582 * values as per hardware limits for TRY_FMT. The default pixel and 583 * field format is selected based on interface type. 584 */ 585static int vpif_check_format(struct channel_obj *ch, 586 struct v4l2_pix_format *pixfmt, 587 int update) 588{ 589 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); 590 struct vpif_params *vpif_params = &ch->vpifparams; 591 enum v4l2_field field = pixfmt->field; 592 u32 sizeimage, hpitch, vpitch; 593 int ret = -EINVAL; 594 595 vpif_dbg(2, debug, "vpif_check_format\n"); 596 /** 597 * first check for the pixel format. If if_type is Raw bayer, 598 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only 599 * V4L2_PIX_FMT_YUV422P is supported 600 */ 601 if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) { 602 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) { 603 if (!update) { 604 vpif_dbg(2, debug, "invalid pix format\n"); 605 goto exit; 606 } 607 pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8; 608 } 609 } else { 610 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) { 611 if (!update) { 612 vpif_dbg(2, debug, "invalid pixel format\n"); 613 goto exit; 614 } 615 pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P; 616 } 617 } 618 619 if (!(VPIF_VALID_FIELD(field))) { 620 if (!update) { 621 vpif_dbg(2, debug, "invalid field format\n"); 622 goto exit; 623 } 624 /** 625 * By default use FIELD_NONE for RAW Bayer capture 626 * and FIELD_INTERLACED for other interfaces 627 */ 628 field = vpif_get_default_field(&vpif_params->iface); 629 } else if (field == V4L2_FIELD_ANY) 630 /* unsupported field. Use default */ 631 field = vpif_get_default_field(&vpif_params->iface); 632 633 /* validate the hpitch */ 634 hpitch = pixfmt->bytesperline; 635 if (hpitch < vpif_params->std_info.width) { 636 if (!update) { 637 vpif_dbg(2, debug, "invalid hpitch\n"); 638 goto exit; 639 } 640 hpitch = vpif_params->std_info.width; 641 } 642 643 if (V4L2_MEMORY_USERPTR == common->memory) 644 sizeimage = pixfmt->sizeimage; 645 else 646 sizeimage = config_params.channel_bufsize[ch->channel_id]; 647 648 vpitch = sizeimage / (hpitch * 2); 649 650 /* validate the vpitch */ 651 if (vpitch < vpif_params->std_info.height) { 652 if (!update) { 653 vpif_dbg(2, debug, "Invalid vpitch\n"); 654 goto exit; 655 } 656 vpitch = vpif_params->std_info.height; 657 } 658 659 /* Check for 8 byte alignment */ 660 if (!ALIGN(hpitch, 8)) { 661 if (!update) { 662 vpif_dbg(2, debug, "invalid pitch alignment\n"); 663 goto exit; 664 } 665 /* adjust to next 8 byte boundary */ 666 hpitch = (((hpitch + 7) / 8) * 8); 667 } 668 /* if update is set, modify the bytesperline and sizeimage */ 669 if (update) { 670 pixfmt->bytesperline = hpitch; 671 pixfmt->sizeimage = hpitch * vpitch * 2; 672 } 673 /** 674 * Image width and height is always based on current standard width and 675 * height 676 */ 677 pixfmt->width = common->fmt.fmt.pix.width; 678 pixfmt->height = common->fmt.fmt.pix.height; 679 return 0; 680exit: 681 return ret; 682} 683 684/** 685 * vpif_config_addr() - function to configure buffer address in vpif 686 * @ch - channel ptr 687 * @muxmode - channel mux mode 688 */ 689static void vpif_config_addr(struct channel_obj *ch, int muxmode) 690{ 691 struct common_obj *common; 692 693 vpif_dbg(2, debug, "vpif_config_addr\n"); 694 695 common = &(ch->common[VPIF_VIDEO_INDEX]); 696 697 if (VPIF_CHANNEL1_VIDEO == ch->channel_id) 698 common->set_addr = ch1_set_videobuf_addr; 699 else if (2 == muxmode) 700 common->set_addr = ch0_set_videobuf_addr_yc_nmux; 701 else 702 common->set_addr = ch0_set_videobuf_addr; 703} 704 705/** 706 * vpfe_mmap : It is used to map kernel space buffers into user spaces 707 * @filep: file pointer 708 * @vma: ptr to vm_area_struct 709 */ 710static int vpif_mmap(struct file *filep, struct vm_area_struct *vma) 711{ 712 /* Get the channel object and file handle object */ 713 struct vpif_fh *fh = filep->private_data; 714 struct channel_obj *ch = fh->channel; 715 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); 716 717 vpif_dbg(2, debug, "vpif_mmap\n"); 718 719 return videobuf_mmap_mapper(&common->buffer_queue, vma); 720} 721 722/** 723 * vpif_poll: It is used for select/poll system call 724 * @filep: file pointer 725 * @wait: poll table to wait 726 */ 727static unsigned int vpif_poll(struct file *filep, poll_table * wait) 728{ 729 struct vpif_fh *fh = filep->private_data; 730 struct channel_obj *channel = fh->channel; 731 struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); 732 733 vpif_dbg(2, debug, "vpif_poll\n"); 734 735 if (common->started) 736 return videobuf_poll_stream(filep, &common->buffer_queue, wait); 737 return 0; 738} 739 740/** 741 * vpif_open : vpif open handler 742 * @filep: file ptr 743 * 744 * It creates object of file handle structure and stores it in private_data 745 * member of filepointer 746 */ 747static int vpif_open(struct file *filep) 748{ 749 struct vpif_capture_config *config = vpif_dev->platform_data; 750 struct video_device *vdev = video_devdata(filep); 751 struct common_obj *common; 752 struct video_obj *vid_ch; 753 struct channel_obj *ch; 754 struct vpif_fh *fh; 755 int i; 756 757 vpif_dbg(2, debug, "vpif_open\n"); 758 759 ch = video_get_drvdata(vdev); 760 761 vid_ch = &ch->video; 762 common = &ch->common[VPIF_VIDEO_INDEX]; 763 764 if (NULL == ch->curr_subdev_info) { 765 /** 766 * search through the sub device to see a registered 767 * sub device and make it as current sub device 768 */ 769 for (i = 0; i < config->subdev_count; i++) { 770 if (vpif_obj.sd[i]) { 771 /* the sub device is registered */ 772 ch->curr_subdev_info = &config->subdev_info[i]; 773 /* make first input as the current input */ 774 vid_ch->input_idx = 0; 775 break; 776 } 777 } 778 if (i == config->subdev_count) { 779 vpif_err("No sub device registered\n"); 780 return -ENOENT; 781 } 782 } 783 784 /* Allocate memory for the file handle object */ 785 fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL); 786 if (NULL == fh) { 787 vpif_err("unable to allocate memory for file handle object\n"); 788 return -ENOMEM; 789 } 790 791 /* store pointer to fh in private_data member of filep */ 792 filep->private_data = fh; 793 fh->channel = ch; 794 fh->initialized = 0; 795 /* If decoder is not initialized. initialize it */ 796 if (!ch->initialized) { 797 fh->initialized = 1; 798 ch->initialized = 1; 799 memset(&(ch->vpifparams), 0, sizeof(struct vpif_params)); 800 } 801 /* Increment channel usrs counter */ 802 ch->usrs++; 803 /* Set io_allowed member to false */ 804 fh->io_allowed[VPIF_VIDEO_INDEX] = 0; 805 /* Initialize priority of this instance to default priority */ 806 fh->prio = V4L2_PRIORITY_UNSET; 807 v4l2_prio_open(&ch->prio, &fh->prio); 808 return 0; 809} 810 811/** 812 * vpif_release : function to clean up file close 813 * @filep: file pointer 814 * 815 * This function deletes buffer queue, frees the buffers and the vpfe file 816 * handle 817 */ 818static int vpif_release(struct file *filep) 819{ 820 struct vpif_fh *fh = filep->private_data; 821 struct channel_obj *ch = fh->channel; 822 struct common_obj *common; 823 824 vpif_dbg(2, debug, "vpif_release\n"); 825 826 common = &ch->common[VPIF_VIDEO_INDEX]; 827 828 /* if this instance is doing IO */ 829 if (fh->io_allowed[VPIF_VIDEO_INDEX]) { 830 /* Reset io_usrs member of channel object */ 831 common->io_usrs = 0; 832 /* Disable channel as per its device type and channel id */ 833 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { 834 enable_channel0(0); 835 channel0_intr_enable(0); 836 } 837 if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) || 838 (2 == common->started)) { 839 enable_channel1(0); 840 channel1_intr_enable(0); 841 } 842 common->started = 0; 843 /* Free buffers allocated */ 844 videobuf_queue_cancel(&common->buffer_queue); 845 videobuf_mmap_free(&common->buffer_queue); 846 } 847 848 /* Decrement channel usrs counter */ 849 ch->usrs--; 850 851 /* Close the priority */ 852 v4l2_prio_close(&ch->prio, fh->prio); 853 854 if (fh->initialized) 855 ch->initialized = 0; 856 857 filep->private_data = NULL; 858 kfree(fh); 859 return 0; 860} 861 862/** 863 * vpif_reqbufs() - request buffer handler 864 * @file: file ptr 865 * @priv: file handle 866 * @reqbuf: request buffer structure ptr 867 */ 868static int vpif_reqbufs(struct file *file, void *priv, 869 struct v4l2_requestbuffers *reqbuf) 870{ 871 struct vpif_fh *fh = priv; 872 struct channel_obj *ch = fh->channel; 873 struct common_obj *common; 874 u8 index = 0; 875 876 vpif_dbg(2, debug, "vpif_reqbufs\n"); 877 878 /** 879 * This file handle has not initialized the channel, 880 * It is not allowed to do settings 881 */ 882 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) 883 || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { 884 if (!fh->initialized) { 885 vpif_dbg(1, debug, "Channel Busy\n"); 886 return -EBUSY; 887 } 888 } 889 890 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type) 891 return -EINVAL; 892 893 index = VPIF_VIDEO_INDEX; 894 895 common = &ch->common[index]; 896 897 if (0 != common->io_usrs) 898 return -EBUSY; 899 900 /* Initialize videobuf queue as per the buffer type */ 901 videobuf_queue_dma_contig_init(&common->buffer_queue, 902 &video_qops, NULL, 903 &common->irqlock, 904 reqbuf->type, 905 common->fmt.fmt.pix.field, 906 sizeof(struct videobuf_buffer), fh, 907 &common->lock); 908 909 /* Set io allowed member of file handle to TRUE */ 910 fh->io_allowed[index] = 1; 911 /* Increment io usrs member of channel object to 1 */ 912 common->io_usrs = 1; 913 /* Store type of memory requested in channel object */ 914 common->memory = reqbuf->memory; 915 INIT_LIST_HEAD(&common->dma_queue); 916 917 /* Allocate buffers */ 918 return videobuf_reqbufs(&common->buffer_queue, reqbuf); 919} 920 921/** 922 * vpif_querybuf() - query buffer handler 923 * @file: file ptr 924 * @priv: file handle 925 * @buf: v4l2 buffer structure ptr 926 */ 927static int vpif_querybuf(struct file *file, void *priv, 928 struct v4l2_buffer *buf) 929{ 930 struct vpif_fh *fh = priv; 931 struct channel_obj *ch = fh->channel; 932 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 933 934 vpif_dbg(2, debug, "vpif_querybuf\n"); 935 936 if (common->fmt.type != buf->type) 937 return -EINVAL; 938 939 if (common->memory != V4L2_MEMORY_MMAP) { 940 vpif_dbg(1, debug, "Invalid memory\n"); 941 return -EINVAL; 942 } 943 944 return videobuf_querybuf(&common->buffer_queue, buf); 945} 946 947/** 948 * vpif_qbuf() - query buffer handler 949 * @file: file ptr 950 * @priv: file handle 951 * @buf: v4l2 buffer structure ptr 952 */ 953static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) 954{ 955 956 struct vpif_fh *fh = priv; 957 struct channel_obj *ch = fh->channel; 958 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 959 struct v4l2_buffer tbuf = *buf; 960 struct videobuf_buffer *buf1; 961 unsigned long addr = 0; 962 unsigned long flags; 963 int ret = 0; 964 965 vpif_dbg(2, debug, "vpif_qbuf\n"); 966 967 if (common->fmt.type != tbuf.type) { 968 vpif_err("invalid buffer type\n"); 969 return -EINVAL; 970 } 971 972 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { 973 vpif_err("fh io not allowed \n"); 974 return -EACCES; 975 } 976 977 if (!(list_empty(&common->dma_queue)) || 978 (common->cur_frm != common->next_frm) || 979 !common->started || 980 (common->started && (0 == ch->field_id))) 981 return videobuf_qbuf(&common->buffer_queue, buf); 982 983 /* bufferqueue is empty store buffer address in VPIF registers */ 984 mutex_lock(&common->buffer_queue.vb_lock); 985 buf1 = common->buffer_queue.bufs[tbuf.index]; 986 987 if ((buf1->state == VIDEOBUF_QUEUED) || 988 (buf1->state == VIDEOBUF_ACTIVE)) { 989 vpif_err("invalid state\n"); 990 goto qbuf_exit; 991 } 992 993 switch (buf1->memory) { 994 case V4L2_MEMORY_MMAP: 995 if (buf1->baddr == 0) 996 goto qbuf_exit; 997 break; 998 999 case V4L2_MEMORY_USERPTR: 1000 if (tbuf.length < buf1->bsize) 1001 goto qbuf_exit; 1002 1003 if ((VIDEOBUF_NEEDS_INIT != buf1->state) 1004 && (buf1->baddr != tbuf.m.userptr)) { 1005 vpif_buffer_release(&common->buffer_queue, buf1); 1006 buf1->baddr = tbuf.m.userptr; 1007 } 1008 break; 1009 1010 default: 1011 goto qbuf_exit; 1012 } 1013 1014 local_irq_save(flags); 1015 ret = vpif_buffer_prepare(&common->buffer_queue, buf1, 1016 common->buffer_queue.field); 1017 if (ret < 0) { 1018 local_irq_restore(flags); 1019 goto qbuf_exit; 1020 } 1021 1022 buf1->state = VIDEOBUF_ACTIVE; 1023 1024 if (V4L2_MEMORY_USERPTR == common->memory) 1025 addr = buf1->boff; 1026 else 1027 addr = videobuf_to_dma_contig(buf1); 1028 1029 common->next_frm = buf1; 1030 common->set_addr(addr + common->ytop_off, 1031 addr + common->ybtm_off, 1032 addr + common->ctop_off, 1033 addr + common->cbtm_off); 1034 1035 local_irq_restore(flags); 1036 list_add_tail(&buf1->stream, &common->buffer_queue.stream); 1037 mutex_unlock(&common->buffer_queue.vb_lock); 1038 return 0; 1039 1040qbuf_exit: 1041 mutex_unlock(&common->buffer_queue.vb_lock); 1042 return -EINVAL; 1043} 1044 1045/** 1046 * vpif_dqbuf() - query buffer handler 1047 * @file: file ptr 1048 * @priv: file handle 1049 * @buf: v4l2 buffer structure ptr 1050 */ 1051static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) 1052{ 1053 struct vpif_fh *fh = priv; 1054 struct channel_obj *ch = fh->channel; 1055 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1056 1057 vpif_dbg(2, debug, "vpif_dqbuf\n"); 1058 1059 return videobuf_dqbuf(&common->buffer_queue, buf, 1060 file->f_flags & O_NONBLOCK); 1061} 1062 1063/** 1064 * vpif_streamon() - streamon handler 1065 * @file: file ptr 1066 * @priv: file handle 1067 * @buftype: v4l2 buffer type 1068 */ 1069static int vpif_streamon(struct file *file, void *priv, 1070 enum v4l2_buf_type buftype) 1071{ 1072 1073 struct vpif_capture_config *config = vpif_dev->platform_data; 1074 struct vpif_fh *fh = priv; 1075 struct channel_obj *ch = fh->channel; 1076 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1077 struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id]; 1078 struct vpif_params *vpif; 1079 unsigned long addr = 0; 1080 int ret = 0; 1081 1082 vpif_dbg(2, debug, "vpif_streamon\n"); 1083 1084 vpif = &ch->vpifparams; 1085 1086 if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) { 1087 vpif_dbg(1, debug, "buffer type not supported\n"); 1088 return -EINVAL; 1089 } 1090 1091 /* If file handle is not allowed IO, return error */ 1092 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { 1093 vpif_dbg(1, debug, "io not allowed\n"); 1094 return -EACCES; 1095 } 1096 1097 /* If Streaming is already started, return error */ 1098 if (common->started) { 1099 vpif_dbg(1, debug, "channel->started\n"); 1100 return -EBUSY; 1101 } 1102 1103 if ((ch->channel_id == VPIF_CHANNEL0_VIDEO && 1104 oth_ch->common[VPIF_VIDEO_INDEX].started && 1105 vpif->std_info.ycmux_mode == 0) || 1106 ((ch->channel_id == VPIF_CHANNEL1_VIDEO) && 1107 (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) { 1108 vpif_dbg(1, debug, "other channel is being used\n"); 1109 return -EBUSY; 1110 } 1111 1112 ret = vpif_check_format(ch, &common->fmt.fmt.pix, 0); 1113 if (ret) 1114 return ret; 1115 1116 /* Enable streamon on the sub device */ 1117 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, 1118 s_stream, 1); 1119 1120 if (ret && (ret != -ENOIOCTLCMD)) { 1121 vpif_dbg(1, debug, "stream on failed in subdev\n"); 1122 return ret; 1123 } 1124 1125 /* Call videobuf_streamon to start streaming in videobuf */ 1126 ret = videobuf_streamon(&common->buffer_queue); 1127 if (ret) { 1128 vpif_dbg(1, debug, "videobuf_streamon\n"); 1129 return ret; 1130 } 1131 1132 /* If buffer queue is empty, return error */ 1133 if (list_empty(&common->dma_queue)) { 1134 vpif_dbg(1, debug, "buffer queue is empty\n"); 1135 ret = -EIO; 1136 goto exit; 1137 } 1138 1139 /* Get the next frame from the buffer queue */ 1140 common->cur_frm = list_entry(common->dma_queue.next, 1141 struct videobuf_buffer, queue); 1142 common->next_frm = common->cur_frm; 1143 1144 /* Remove buffer from the buffer queue */ 1145 list_del(&common->cur_frm->queue); 1146 /* Mark state of the current frame to active */ 1147 common->cur_frm->state = VIDEOBUF_ACTIVE; 1148 /* Initialize field_id and started member */ 1149 ch->field_id = 0; 1150 common->started = 1; 1151 1152 if (V4L2_MEMORY_USERPTR == common->memory) 1153 addr = common->cur_frm->boff; 1154 else 1155 addr = videobuf_to_dma_contig(common->cur_frm); 1156 1157 /* Calculate the offset for Y and C data in the buffer */ 1158 vpif_calculate_offsets(ch); 1159 1160 if ((vpif->std_info.frm_fmt && 1161 ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) && 1162 (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) || 1163 (!vpif->std_info.frm_fmt && 1164 (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) { 1165 vpif_dbg(1, debug, "conflict in field format and std format\n"); 1166 ret = -EINVAL; 1167 goto exit; 1168 } 1169 1170 /* configure 1 or 2 channel mode */ 1171 ret = config->setup_input_channel_mode(vpif->std_info.ycmux_mode); 1172 1173 if (ret < 0) { 1174 vpif_dbg(1, debug, "can't set vpif channel mode\n"); 1175 goto exit; 1176 } 1177 1178 /* Call vpif_set_params function to set the parameters and addresses */ 1179 ret = vpif_set_video_params(vpif, ch->channel_id); 1180 1181 if (ret < 0) { 1182 vpif_dbg(1, debug, "can't set video params\n"); 1183 goto exit; 1184 } 1185 1186 common->started = ret; 1187 vpif_config_addr(ch, ret); 1188 1189 common->set_addr(addr + common->ytop_off, 1190 addr + common->ybtm_off, 1191 addr + common->ctop_off, 1192 addr + common->cbtm_off); 1193 1194 /** 1195 * Set interrupt for both the fields in VPIF Register enable channel in 1196 * VPIF register 1197 */ 1198 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)) { 1199 channel0_intr_assert(); 1200 channel0_intr_enable(1); 1201 enable_channel0(1); 1202 } 1203 if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) || 1204 (common->started == 2)) { 1205 channel1_intr_assert(); 1206 channel1_intr_enable(1); 1207 enable_channel1(1); 1208 } 1209 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1; 1210 return ret; 1211 1212exit: 1213 videobuf_streamoff(&common->buffer_queue); 1214 return ret; 1215} 1216 1217/** 1218 * vpif_streamoff() - streamoff handler 1219 * @file: file ptr 1220 * @priv: file handle 1221 * @buftype: v4l2 buffer type 1222 */ 1223static int vpif_streamoff(struct file *file, void *priv, 1224 enum v4l2_buf_type buftype) 1225{ 1226 1227 struct vpif_fh *fh = priv; 1228 struct channel_obj *ch = fh->channel; 1229 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1230 int ret; 1231 1232 vpif_dbg(2, debug, "vpif_streamoff\n"); 1233 1234 if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) { 1235 vpif_dbg(1, debug, "buffer type not supported\n"); 1236 return -EINVAL; 1237 } 1238 1239 /* If io is allowed for this file handle, return error */ 1240 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { 1241 vpif_dbg(1, debug, "io not allowed\n"); 1242 return -EACCES; 1243 } 1244 1245 /* If streaming is not started, return error */ 1246 if (!common->started) { 1247 vpif_dbg(1, debug, "channel->started\n"); 1248 return -EINVAL; 1249 } 1250 1251 /* disable channel */ 1252 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { 1253 enable_channel0(0); 1254 channel0_intr_enable(0); 1255 } else { 1256 enable_channel1(0); 1257 channel1_intr_enable(0); 1258 } 1259 1260 common->started = 0; 1261 1262 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, 1263 s_stream, 0); 1264 1265 if (ret && (ret != -ENOIOCTLCMD)) 1266 vpif_dbg(1, debug, "stream off failed in subdev\n"); 1267 1268 return videobuf_streamoff(&common->buffer_queue); 1269} 1270 1271/** 1272 * vpif_map_sub_device_to_input() - Maps sub device to input 1273 * @ch - ptr to channel 1274 * @config - ptr to capture configuration 1275 * @input_index - Given input index from application 1276 * @sub_device_index - index into sd table 1277 * 1278 * lookup the sub device information for a given input index. 1279 * we report all the inputs to application. inputs table also 1280 * has sub device name for the each input 1281 */ 1282static struct vpif_subdev_info *vpif_map_sub_device_to_input( 1283 struct channel_obj *ch, 1284 struct vpif_capture_config *vpif_cfg, 1285 int input_index, 1286 int *sub_device_index) 1287{ 1288 struct vpif_capture_chan_config *chan_cfg; 1289 struct vpif_subdev_info *subdev_info = NULL; 1290 const char *subdev_name = NULL; 1291 int i; 1292 1293 vpif_dbg(2, debug, "vpif_map_sub_device_to_input\n"); 1294 1295 chan_cfg = &vpif_cfg->chan_config[ch->channel_id]; 1296 1297 /** 1298 * search through the inputs to find the sub device supporting 1299 * the input 1300 */ 1301 for (i = 0; i < chan_cfg->input_count; i++) { 1302 /* For each sub device, loop through input */ 1303 if (i == input_index) { 1304 subdev_name = chan_cfg->inputs[i].subdev_name; 1305 break; 1306 } 1307 } 1308 1309 /* if reached maximum. return null */ 1310 if (i == chan_cfg->input_count || (NULL == subdev_name)) 1311 return subdev_info; 1312 1313 /* loop through the sub device list to get the sub device info */ 1314 for (i = 0; i < vpif_cfg->subdev_count; i++) { 1315 subdev_info = &vpif_cfg->subdev_info[i]; 1316 if (!strcmp(subdev_info->name, subdev_name)) 1317 break; 1318 } 1319 1320 if (i == vpif_cfg->subdev_count) 1321 return subdev_info; 1322 1323 /* check if the sub device is registered */ 1324 if (NULL == vpif_obj.sd[i]) 1325 return NULL; 1326 1327 *sub_device_index = i; 1328 return subdev_info; 1329} 1330 1331/** 1332 * vpif_querystd() - querystd handler 1333 * @file: file ptr 1334 * @priv: file handle 1335 * @std_id: ptr to std id 1336 * 1337 * This function is called to detect standard at the selected input 1338 */ 1339static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id) 1340{ 1341 struct vpif_fh *fh = priv; 1342 struct channel_obj *ch = fh->channel; 1343 int ret = 0; 1344 1345 vpif_dbg(2, debug, "vpif_querystd\n"); 1346 1347 /* Call querystd function of decoder device */ 1348 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, 1349 querystd, std_id); 1350 if (ret < 0) 1351 vpif_dbg(1, debug, "Failed to set standard for sub devices\n"); 1352 1353 return ret; 1354} 1355 1356/** 1357 * vpif_g_std() - get STD handler 1358 * @file: file ptr 1359 * @priv: file handle 1360 * @std_id: ptr to std id 1361 */ 1362static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) 1363{ 1364 struct vpif_fh *fh = priv; 1365 struct channel_obj *ch = fh->channel; 1366 1367 vpif_dbg(2, debug, "vpif_g_std\n"); 1368 1369 *std = ch->video.stdid; 1370 return 0; 1371} 1372 1373/** 1374 * vpif_s_std() - set STD handler 1375 * @file: file ptr 1376 * @priv: file handle 1377 * @std_id: ptr to std id 1378 */ 1379static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id) 1380{ 1381 struct vpif_fh *fh = priv; 1382 struct channel_obj *ch = fh->channel; 1383 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1384 int ret = 0; 1385 1386 vpif_dbg(2, debug, "vpif_s_std\n"); 1387 1388 if (common->started) { 1389 vpif_err("streaming in progress\n"); 1390 return -EBUSY; 1391 } 1392 1393 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || 1394 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { 1395 if (!fh->initialized) { 1396 vpif_dbg(1, debug, "Channel Busy\n"); 1397 return -EBUSY; 1398 } 1399 } 1400 1401 ret = v4l2_prio_check(&ch->prio, fh->prio); 1402 if (0 != ret) 1403 return ret; 1404 1405 fh->initialized = 1; 1406 1407 /* Call encoder subdevice function to set the standard */ 1408 ch->video.stdid = *std_id; 1409 ch->video.dv_preset = V4L2_DV_INVALID; 1410 memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings)); 1411 1412 /* Get the information about the standard */ 1413 if (vpif_update_std_info(ch)) { 1414 vpif_err("Error getting the standard info\n"); 1415 return -EINVAL; 1416 } 1417 1418 /* Configure the default format information */ 1419 vpif_config_format(ch); 1420 1421 /* set standard in the sub device */ 1422 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core, 1423 s_std, *std_id); 1424 if (ret < 0) 1425 vpif_dbg(1, debug, "Failed to set standard for sub devices\n"); 1426 return ret; 1427} 1428 1429/** 1430 * vpif_enum_input() - ENUMINPUT handler 1431 * @file: file ptr 1432 * @priv: file handle 1433 * @input: ptr to input structure 1434 */ 1435static int vpif_enum_input(struct file *file, void *priv, 1436 struct v4l2_input *input) 1437{ 1438 1439 struct vpif_capture_config *config = vpif_dev->platform_data; 1440 struct vpif_capture_chan_config *chan_cfg; 1441 struct vpif_fh *fh = priv; 1442 struct channel_obj *ch = fh->channel; 1443 1444 chan_cfg = &config->chan_config[ch->channel_id]; 1445 1446 if (input->index >= chan_cfg->input_count) { 1447 vpif_dbg(1, debug, "Invalid input index\n"); 1448 return -EINVAL; 1449 } 1450 1451 memcpy(input, &chan_cfg->inputs[input->index].input, 1452 sizeof(*input)); 1453 return 0; 1454} 1455 1456/** 1457 * vpif_g_input() - Get INPUT handler 1458 * @file: file ptr 1459 * @priv: file handle 1460 * @index: ptr to input index 1461 */ 1462static int vpif_g_input(struct file *file, void *priv, unsigned int *index) 1463{ 1464 struct vpif_fh *fh = priv; 1465 struct channel_obj *ch = fh->channel; 1466 struct video_obj *vid_ch = &ch->video; 1467 1468 *index = vid_ch->input_idx; 1469 1470 return 0; 1471} 1472 1473/** 1474 * vpif_s_input() - Set INPUT handler 1475 * @file: file ptr 1476 * @priv: file handle 1477 * @index: input index 1478 */ 1479static int vpif_s_input(struct file *file, void *priv, unsigned int index) 1480{ 1481 struct vpif_capture_config *config = vpif_dev->platform_data; 1482 struct vpif_capture_chan_config *chan_cfg; 1483 struct vpif_fh *fh = priv; 1484 struct channel_obj *ch = fh->channel; 1485 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1486 struct video_obj *vid_ch = &ch->video; 1487 struct vpif_subdev_info *subdev_info; 1488 int ret = 0, sd_index = 0; 1489 u32 input = 0, output = 0; 1490 1491 chan_cfg = &config->chan_config[ch->channel_id]; 1492 1493 if (common->started) { 1494 vpif_err("Streaming in progress\n"); 1495 return -EBUSY; 1496 } 1497 1498 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || 1499 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { 1500 if (!fh->initialized) { 1501 vpif_dbg(1, debug, "Channel Busy\n"); 1502 return -EBUSY; 1503 } 1504 } 1505 1506 ret = v4l2_prio_check(&ch->prio, fh->prio); 1507 if (0 != ret) 1508 return ret; 1509 1510 fh->initialized = 1; 1511 subdev_info = vpif_map_sub_device_to_input(ch, config, index, 1512 &sd_index); 1513 if (NULL == subdev_info) { 1514 vpif_dbg(1, debug, 1515 "couldn't lookup sub device for the input index\n"); 1516 return -EINVAL; 1517 } 1518 1519 /* first setup input path from sub device to vpif */ 1520 if (config->setup_input_path) { 1521 ret = config->setup_input_path(ch->channel_id, 1522 subdev_info->name); 1523 if (ret < 0) { 1524 vpif_dbg(1, debug, "couldn't setup input path for the" 1525 " sub device %s, for input index %d\n", 1526 subdev_info->name, index); 1527 return ret; 1528 } 1529 } 1530 1531 if (subdev_info->can_route) { 1532 input = subdev_info->input; 1533 output = subdev_info->output; 1534 ret = v4l2_subdev_call(vpif_obj.sd[sd_index], video, s_routing, 1535 input, output, 0); 1536 if (ret < 0) { 1537 vpif_dbg(1, debug, "Failed to set input\n"); 1538 return ret; 1539 } 1540 } 1541 vid_ch->input_idx = index; 1542 ch->curr_subdev_info = subdev_info; 1543 ch->curr_sd_index = sd_index; 1544 /* copy interface parameters to vpif */ 1545 ch->vpifparams.iface = subdev_info->vpif_if; 1546 1547 /* update tvnorms from the sub device input info */ 1548 ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std; 1549 return ret; 1550} 1551 1552/** 1553 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler 1554 * @file: file ptr 1555 * @priv: file handle 1556 * @index: input index 1557 */ 1558static int vpif_enum_fmt_vid_cap(struct file *file, void *priv, 1559 struct v4l2_fmtdesc *fmt) 1560{ 1561 struct vpif_fh *fh = priv; 1562 struct channel_obj *ch = fh->channel; 1563 1564 if (fmt->index != 0) { 1565 vpif_dbg(1, debug, "Invalid format index\n"); 1566 return -EINVAL; 1567 } 1568 1569 /* Fill in the information about format */ 1570 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) { 1571 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1572 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb"); 1573 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8; 1574 } else { 1575 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1576 strcpy(fmt->description, "YCbCr4:2:2 YC Planar"); 1577 fmt->pixelformat = V4L2_PIX_FMT_YUV422P; 1578 } 1579 return 0; 1580} 1581 1582/** 1583 * vpif_try_fmt_vid_cap() - TRY_FMT handler 1584 * @file: file ptr 1585 * @priv: file handle 1586 * @fmt: ptr to v4l2 format structure 1587 */ 1588static int vpif_try_fmt_vid_cap(struct file *file, void *priv, 1589 struct v4l2_format *fmt) 1590{ 1591 struct vpif_fh *fh = priv; 1592 struct channel_obj *ch = fh->channel; 1593 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; 1594 1595 return vpif_check_format(ch, pixfmt, 1); 1596} 1597 1598 1599/** 1600 * vpif_g_fmt_vid_cap() - Set INPUT handler 1601 * @file: file ptr 1602 * @priv: file handle 1603 * @fmt: ptr to v4l2 format structure 1604 */ 1605static int vpif_g_fmt_vid_cap(struct file *file, void *priv, 1606 struct v4l2_format *fmt) 1607{ 1608 struct vpif_fh *fh = priv; 1609 struct channel_obj *ch = fh->channel; 1610 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1611 1612 /* Check the validity of the buffer type */ 1613 if (common->fmt.type != fmt->type) 1614 return -EINVAL; 1615 1616 /* Fill in the information about format */ 1617 *fmt = common->fmt; 1618 return 0; 1619} 1620 1621/** 1622 * vpif_s_fmt_vid_cap() - Set FMT handler 1623 * @file: file ptr 1624 * @priv: file handle 1625 * @fmt: ptr to v4l2 format structure 1626 */ 1627static int vpif_s_fmt_vid_cap(struct file *file, void *priv, 1628 struct v4l2_format *fmt) 1629{ 1630 struct vpif_fh *fh = priv; 1631 struct channel_obj *ch = fh->channel; 1632 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1633 struct v4l2_pix_format *pixfmt; 1634 int ret = 0; 1635 1636 vpif_dbg(2, debug, "%s\n", __func__); 1637 1638 /* If streaming is started, return error */ 1639 if (common->started) { 1640 vpif_dbg(1, debug, "Streaming is started\n"); 1641 return -EBUSY; 1642 } 1643 1644 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || 1645 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { 1646 if (!fh->initialized) { 1647 vpif_dbg(1, debug, "Channel Busy\n"); 1648 return -EBUSY; 1649 } 1650 } 1651 1652 ret = v4l2_prio_check(&ch->prio, fh->prio); 1653 if (0 != ret) 1654 return ret; 1655 1656 fh->initialized = 1; 1657 1658 pixfmt = &fmt->fmt.pix; 1659 /* Check for valid field format */ 1660 ret = vpif_check_format(ch, pixfmt, 0); 1661 1662 if (ret) 1663 return ret; 1664 /* store the format in the channel object */ 1665 common->fmt = *fmt; 1666 return 0; 1667} 1668 1669/** 1670 * vpif_querycap() - QUERYCAP handler 1671 * @file: file ptr 1672 * @priv: file handle 1673 * @cap: ptr to v4l2_capability structure 1674 */ 1675static int vpif_querycap(struct file *file, void *priv, 1676 struct v4l2_capability *cap) 1677{ 1678 struct vpif_capture_config *config = vpif_dev->platform_data; 1679 1680 cap->version = VPIF_CAPTURE_VERSION_CODE; 1681 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 1682 strlcpy(cap->driver, "vpif capture", sizeof(cap->driver)); 1683 strlcpy(cap->bus_info, "DM646x Platform", sizeof(cap->bus_info)); 1684 strlcpy(cap->card, config->card_name, sizeof(cap->card)); 1685 1686 return 0; 1687} 1688 1689/** 1690 * vpif_g_priority() - get priority handler 1691 * @file: file ptr 1692 * @priv: file handle 1693 * @prio: ptr to v4l2_priority structure 1694 */ 1695static int vpif_g_priority(struct file *file, void *priv, 1696 enum v4l2_priority *prio) 1697{ 1698 struct vpif_fh *fh = priv; 1699 struct channel_obj *ch = fh->channel; 1700 1701 *prio = v4l2_prio_max(&ch->prio); 1702 1703 return 0; 1704} 1705 1706/** 1707 * vpif_s_priority() - set priority handler 1708 * @file: file ptr 1709 * @priv: file handle 1710 * @prio: ptr to v4l2_priority structure 1711 */ 1712static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p) 1713{ 1714 struct vpif_fh *fh = priv; 1715 struct channel_obj *ch = fh->channel; 1716 1717 return v4l2_prio_change(&ch->prio, &fh->prio, p); 1718} 1719 1720/** 1721 * vpif_cropcap() - cropcap handler 1722 * @file: file ptr 1723 * @priv: file handle 1724 * @crop: ptr to v4l2_cropcap structure 1725 */ 1726static int vpif_cropcap(struct file *file, void *priv, 1727 struct v4l2_cropcap *crop) 1728{ 1729 struct vpif_fh *fh = priv; 1730 struct channel_obj *ch = fh->channel; 1731 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1732 1733 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != crop->type) 1734 return -EINVAL; 1735 1736 crop->bounds.left = 0; 1737 crop->bounds.top = 0; 1738 crop->bounds.height = common->height; 1739 crop->bounds.width = common->width; 1740 crop->defrect = crop->bounds; 1741 return 0; 1742} 1743 1744/** 1745 * vpif_enum_dv_presets() - ENUM_DV_PRESETS handler 1746 * @file: file ptr 1747 * @priv: file handle 1748 * @preset: input preset 1749 */ 1750static int vpif_enum_dv_presets(struct file *file, void *priv, 1751 struct v4l2_dv_enum_preset *preset) 1752{ 1753 struct vpif_fh *fh = priv; 1754 struct channel_obj *ch = fh->channel; 1755 1756 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], 1757 video, enum_dv_presets, preset); 1758} 1759 1760/** 1761 * vpif_query_dv_presets() - QUERY_DV_PRESET handler 1762 * @file: file ptr 1763 * @priv: file handle 1764 * @preset: input preset 1765 */ 1766static int vpif_query_dv_preset(struct file *file, void *priv, 1767 struct v4l2_dv_preset *preset) 1768{ 1769 struct vpif_fh *fh = priv; 1770 struct channel_obj *ch = fh->channel; 1771 1772 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], 1773 video, query_dv_preset, preset); 1774} 1775/** 1776 * vpif_s_dv_presets() - S_DV_PRESETS handler 1777 * @file: file ptr 1778 * @priv: file handle 1779 * @preset: input preset 1780 */ 1781static int vpif_s_dv_preset(struct file *file, void *priv, 1782 struct v4l2_dv_preset *preset) 1783{ 1784 struct vpif_fh *fh = priv; 1785 struct channel_obj *ch = fh->channel; 1786 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1787 int ret = 0; 1788 1789 if (common->started) { 1790 vpif_dbg(1, debug, "streaming in progress\n"); 1791 return -EBUSY; 1792 } 1793 1794 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || 1795 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { 1796 if (!fh->initialized) { 1797 vpif_dbg(1, debug, "Channel Busy\n"); 1798 return -EBUSY; 1799 } 1800 } 1801 1802 ret = v4l2_prio_check(&ch->prio, fh->prio); 1803 if (ret) 1804 return ret; 1805 1806 fh->initialized = 1; 1807 1808 /* Call encoder subdevice function to set the standard */ 1809 if (mutex_lock_interruptible(&common->lock)) 1810 return -ERESTARTSYS; 1811 1812 ch->video.dv_preset = preset->preset; 1813 ch->video.stdid = V4L2_STD_UNKNOWN; 1814 memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings)); 1815 1816 /* Get the information about the standard */ 1817 if (vpif_update_std_info(ch)) { 1818 vpif_dbg(1, debug, "Error getting the standard info\n"); 1819 ret = -EINVAL; 1820 } else { 1821 /* Configure the default format information */ 1822 vpif_config_format(ch); 1823 1824 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], 1825 video, s_dv_preset, preset); 1826 } 1827 1828 mutex_unlock(&common->lock); 1829 1830 return ret; 1831} 1832/** 1833 * vpif_g_dv_presets() - G_DV_PRESETS handler 1834 * @file: file ptr 1835 * @priv: file handle 1836 * @preset: input preset 1837 */ 1838static int vpif_g_dv_preset(struct file *file, void *priv, 1839 struct v4l2_dv_preset *preset) 1840{ 1841 struct vpif_fh *fh = priv; 1842 struct channel_obj *ch = fh->channel; 1843 1844 preset->preset = ch->video.dv_preset; 1845 1846 return 0; 1847} 1848 1849/** 1850 * vpif_s_dv_timings() - S_DV_TIMINGS handler 1851 * @file: file ptr 1852 * @priv: file handle 1853 * @timings: digital video timings 1854 */ 1855static int vpif_s_dv_timings(struct file *file, void *priv, 1856 struct v4l2_dv_timings *timings) 1857{ 1858 struct vpif_fh *fh = priv; 1859 struct channel_obj *ch = fh->channel; 1860 struct vpif_params *vpifparams = &ch->vpifparams; 1861 struct vpif_channel_config_params *std_info = &vpifparams->std_info; 1862 struct video_obj *vid_ch = &ch->video; 1863 struct v4l2_bt_timings *bt = &vid_ch->bt_timings; 1864 int ret; 1865 1866 if (timings->type != V4L2_DV_BT_656_1120) { 1867 vpif_dbg(2, debug, "Timing type not defined\n"); 1868 return -EINVAL; 1869 } 1870 1871 /* Configure subdevice timings, if any */ 1872 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], 1873 video, s_dv_timings, timings); 1874 if (ret == -ENOIOCTLCMD) { 1875 vpif_dbg(2, debug, "Custom DV timings not supported by " 1876 "subdevice\n"); 1877 return -EINVAL; 1878 } 1879 if (ret < 0) { 1880 vpif_dbg(2, debug, "Error setting custom DV timings\n"); 1881 return ret; 1882 } 1883 1884 if (!(timings->bt.width && timings->bt.height && 1885 (timings->bt.hbackporch || 1886 timings->bt.hfrontporch || 1887 timings->bt.hsync) && 1888 timings->bt.vfrontporch && 1889 (timings->bt.vbackporch || 1890 timings->bt.vsync))) { 1891 vpif_dbg(2, debug, "Timings for width, height, " 1892 "horizontal back porch, horizontal sync, " 1893 "horizontal front porch, vertical back porch, " 1894 "vertical sync and vertical back porch " 1895 "must be defined\n"); 1896 return -EINVAL; 1897 } 1898 1899 *bt = timings->bt; 1900 1901 /* Configure video port timings */ 1902 1903 std_info->eav2sav = bt->hbackporch + bt->hfrontporch + 1904 bt->hsync - 8; 1905 std_info->sav2eav = bt->width; 1906 1907 std_info->l1 = 1; 1908 std_info->l3 = bt->vsync + bt->vbackporch + 1; 1909 1910 if (bt->interlaced) { 1911 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) { 1912 std_info->vsize = bt->height * 2 + 1913 bt->vfrontporch + bt->vsync + bt->vbackporch + 1914 bt->il_vfrontporch + bt->il_vsync + 1915 bt->il_vbackporch; 1916 std_info->l5 = std_info->vsize/2 - 1917 (bt->vfrontporch - 1); 1918 std_info->l7 = std_info->vsize/2 + 1; 1919 std_info->l9 = std_info->l7 + bt->il_vsync + 1920 bt->il_vbackporch + 1; 1921 std_info->l11 = std_info->vsize - 1922 (bt->il_vfrontporch - 1); 1923 } else { 1924 vpif_dbg(2, debug, "Required timing values for " 1925 "interlaced BT format missing\n"); 1926 return -EINVAL; 1927 } 1928 } else { 1929 std_info->vsize = bt->height + bt->vfrontporch + 1930 bt->vsync + bt->vbackporch; 1931 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1); 1932 } 1933 strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME); 1934 std_info->width = bt->width; 1935 std_info->height = bt->height; 1936 std_info->frm_fmt = bt->interlaced ? 0 : 1; 1937 std_info->ycmux_mode = 0; 1938 std_info->capture_format = 0; 1939 std_info->vbi_supported = 0; 1940 std_info->hd_sd = 1; 1941 std_info->stdid = 0; 1942 std_info->dv_preset = V4L2_DV_INVALID; 1943 1944 vid_ch->stdid = 0; 1945 vid_ch->dv_preset = V4L2_DV_INVALID; 1946 return 0; 1947} 1948 1949/** 1950 * vpif_g_dv_timings() - G_DV_TIMINGS handler 1951 * @file: file ptr 1952 * @priv: file handle 1953 * @timings: digital video timings 1954 */ 1955static int vpif_g_dv_timings(struct file *file, void *priv, 1956 struct v4l2_dv_timings *timings) 1957{ 1958 struct vpif_fh *fh = priv; 1959 struct channel_obj *ch = fh->channel; 1960 struct video_obj *vid_ch = &ch->video; 1961 struct v4l2_bt_timings *bt = &vid_ch->bt_timings; 1962 1963 timings->bt = *bt; 1964 1965 return 0; 1966} 1967 1968/* 1969 * vpif_g_chip_ident() - Identify the chip 1970 * @file: file ptr 1971 * @priv: file handle 1972 * @chip: chip identity 1973 * 1974 * Returns zero or -EINVAL if read operations fails. 1975 */ 1976static int vpif_g_chip_ident(struct file *file, void *priv, 1977 struct v4l2_dbg_chip_ident *chip) 1978{ 1979 chip->ident = V4L2_IDENT_NONE; 1980 chip->revision = 0; 1981 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER && 1982 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) { 1983 vpif_dbg(2, debug, "match_type is invalid.\n"); 1984 return -EINVAL; 1985 } 1986 1987 return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core, 1988 g_chip_ident, chip); 1989} 1990 1991#ifdef CONFIG_VIDEO_ADV_DEBUG 1992/* 1993 * vpif_dbg_g_register() - Read register 1994 * @file: file ptr 1995 * @priv: file handle 1996 * @reg: register to be read 1997 * 1998 * Debugging only 1999 * Returns zero or -EINVAL if read operations fails. 2000 */ 2001static int vpif_dbg_g_register(struct file *file, void *priv, 2002 struct v4l2_dbg_register *reg){ 2003 struct vpif_fh *fh = priv; 2004 struct channel_obj *ch = fh->channel; 2005 2006 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core, 2007 g_register, reg); 2008} 2009 2010/* 2011 * vpif_dbg_s_register() - Write to register 2012 * @file: file ptr 2013 * @priv: file handle 2014 * @reg: register to be modified 2015 * 2016 * Debugging only 2017 * Returns zero or -EINVAL if write operations fails. 2018 */ 2019static int vpif_dbg_s_register(struct file *file, void *priv, 2020 struct v4l2_dbg_register *reg){ 2021 struct vpif_fh *fh = priv; 2022 struct channel_obj *ch = fh->channel; 2023 2024 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core, 2025 s_register, reg); 2026} 2027#endif 2028 2029/* 2030 * vpif_log_status() - Status information 2031 * @file: file ptr 2032 * @priv: file handle 2033 * 2034 * Returns zero. 2035 */ 2036static int vpif_log_status(struct file *filep, void *priv) 2037{ 2038 /* status for sub devices */ 2039 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status); 2040 2041 return 0; 2042} 2043 2044/* vpif capture ioctl operations */ 2045static const struct v4l2_ioctl_ops vpif_ioctl_ops = { 2046 .vidioc_querycap = vpif_querycap, 2047 .vidioc_g_priority = vpif_g_priority, 2048 .vidioc_s_priority = vpif_s_priority, 2049 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap, 2050 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap, 2051 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap, 2052 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap, 2053 .vidioc_enum_input = vpif_enum_input, 2054 .vidioc_s_input = vpif_s_input, 2055 .vidioc_g_input = vpif_g_input, 2056 .vidioc_reqbufs = vpif_reqbufs, 2057 .vidioc_querybuf = vpif_querybuf, 2058 .vidioc_querystd = vpif_querystd, 2059 .vidioc_s_std = vpif_s_std, 2060 .vidioc_g_std = vpif_g_std, 2061 .vidioc_qbuf = vpif_qbuf, 2062 .vidioc_dqbuf = vpif_dqbuf, 2063 .vidioc_streamon = vpif_streamon, 2064 .vidioc_streamoff = vpif_streamoff, 2065 .vidioc_cropcap = vpif_cropcap, 2066 .vidioc_enum_dv_presets = vpif_enum_dv_presets, 2067 .vidioc_s_dv_preset = vpif_s_dv_preset, 2068 .vidioc_g_dv_preset = vpif_g_dv_preset, 2069 .vidioc_query_dv_preset = vpif_query_dv_preset, 2070 .vidioc_s_dv_timings = vpif_s_dv_timings, 2071 .vidioc_g_dv_timings = vpif_g_dv_timings, 2072 .vidioc_g_chip_ident = vpif_g_chip_ident, 2073#ifdef CONFIG_VIDEO_ADV_DEBUG 2074 .vidioc_g_register = vpif_dbg_g_register, 2075 .vidioc_s_register = vpif_dbg_s_register, 2076#endif 2077 .vidioc_log_status = vpif_log_status, 2078}; 2079 2080/* vpif file operations */ 2081static struct v4l2_file_operations vpif_fops = { 2082 .owner = THIS_MODULE, 2083 .open = vpif_open, 2084 .release = vpif_release, 2085 .unlocked_ioctl = video_ioctl2, 2086 .mmap = vpif_mmap, 2087 .poll = vpif_poll 2088}; 2089 2090/* vpif video template */ 2091static struct video_device vpif_video_template = { 2092 .name = "vpif", 2093 .fops = &vpif_fops, 2094 .minor = -1, 2095 .ioctl_ops = &vpif_ioctl_ops, 2096}; 2097 2098/** 2099 * initialize_vpif() - Initialize vpif data structures 2100 * 2101 * Allocate memory for data structures and initialize them 2102 */ 2103static int initialize_vpif(void) 2104{ 2105 int err = 0, i, j; 2106 int free_channel_objects_index; 2107 2108 /* Default number of buffers should be 3 */ 2109 if ((ch0_numbuffers > 0) && 2110 (ch0_numbuffers < config_params.min_numbuffers)) 2111 ch0_numbuffers = config_params.min_numbuffers; 2112 if ((ch1_numbuffers > 0) && 2113 (ch1_numbuffers < config_params.min_numbuffers)) 2114 ch1_numbuffers = config_params.min_numbuffers; 2115 2116 /* Set buffer size to min buffers size if it is invalid */ 2117 if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO]) 2118 ch0_bufsize = 2119 config_params.min_bufsize[VPIF_CHANNEL0_VIDEO]; 2120 if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO]) 2121 ch1_bufsize = 2122 config_params.min_bufsize[VPIF_CHANNEL1_VIDEO]; 2123 2124 config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers; 2125 config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers; 2126 if (ch0_numbuffers) { 2127 config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO] 2128 = ch0_bufsize; 2129 } 2130 if (ch1_numbuffers) { 2131 config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO] 2132 = ch1_bufsize; 2133 } 2134 2135 /* Allocate memory for six channel objects */ 2136 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { 2137 vpif_obj.dev[i] = 2138 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL); 2139 /* If memory allocation fails, return error */ 2140 if (!vpif_obj.dev[i]) { 2141 free_channel_objects_index = i; 2142 err = -ENOMEM; 2143 goto vpif_init_free_channel_objects; 2144 } 2145 } 2146 return 0; 2147 2148vpif_init_free_channel_objects: 2149 for (j = 0; j < free_channel_objects_index; j++) 2150 kfree(vpif_obj.dev[j]); 2151 return err; 2152} 2153 2154/** 2155 * vpif_probe : This function probes the vpif capture driver 2156 * @pdev: platform device pointer 2157 * 2158 * This creates device entries by register itself to the V4L2 driver and 2159 * initializes fields of each channel objects 2160 */ 2161static __init int vpif_probe(struct platform_device *pdev) 2162{ 2163 struct vpif_subdev_info *subdevdata; 2164 struct vpif_capture_config *config; 2165 int i, j, k, m, q, err; 2166 struct i2c_adapter *i2c_adap; 2167 struct channel_obj *ch; 2168 struct common_obj *common; 2169 struct video_device *vfd; 2170 struct resource *res; 2171 int subdev_count; 2172 2173 vpif_dev = &pdev->dev; 2174 2175 err = initialize_vpif(); 2176 if (err) { 2177 v4l2_err(vpif_dev->driver, "Error initializing vpif\n"); 2178 return err; 2179 } 2180 2181 k = 0; 2182 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) { 2183 for (i = res->start; i <= res->end; i++) { 2184 if (request_irq(i, vpif_channel_isr, IRQF_DISABLED, 2185 "DM646x_Capture", 2186 (void *)(&vpif_obj.dev[k]->channel_id))) { 2187 err = -EBUSY; 2188 i--; 2189 goto vpif_int_err; 2190 } 2191 } 2192 k++; 2193 } 2194 2195 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { 2196 /* Get the pointer to the channel object */ 2197 ch = vpif_obj.dev[i]; 2198 /* Allocate memory for video device */ 2199 vfd = video_device_alloc(); 2200 if (NULL == vfd) { 2201 for (j = 0; j < i; j++) { 2202 ch = vpif_obj.dev[j]; 2203 video_device_release(ch->video_dev); 2204 } 2205 err = -ENOMEM; 2206 goto vpif_dev_alloc_err; 2207 } 2208 2209 /* Initialize field of video device */ 2210 *vfd = vpif_video_template; 2211 vfd->v4l2_dev = &vpif_obj.v4l2_dev; 2212 vfd->release = video_device_release; 2213 snprintf(vfd->name, sizeof(vfd->name), 2214 "DM646x_VPIFCapture_DRIVER_V%d.%d.%d", 2215 (VPIF_CAPTURE_VERSION_CODE >> 16) & 0xff, 2216 (VPIF_CAPTURE_VERSION_CODE >> 8) & 0xff, 2217 (VPIF_CAPTURE_VERSION_CODE) & 0xff); 2218 /* Set video_dev to the video device */ 2219 ch->video_dev = vfd; 2220 } 2221 2222 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { 2223 ch = vpif_obj.dev[j]; 2224 ch->channel_id = j; 2225 common = &(ch->common[VPIF_VIDEO_INDEX]); 2226 spin_lock_init(&common->irqlock); 2227 mutex_init(&common->lock); 2228 ch->video_dev->lock = &common->lock; 2229 /* Initialize prio member of channel object */ 2230 v4l2_prio_init(&ch->prio); 2231 err = video_register_device(ch->video_dev, 2232 VFL_TYPE_GRABBER, (j ? 1 : 0)); 2233 if (err) 2234 goto probe_out; 2235 2236 video_set_drvdata(ch->video_dev, ch); 2237 2238 } 2239 2240 i2c_adap = i2c_get_adapter(1); 2241 config = pdev->dev.platform_data; 2242 2243 subdev_count = config->subdev_count; 2244 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count, 2245 GFP_KERNEL); 2246 if (vpif_obj.sd == NULL) { 2247 vpif_err("unable to allocate memory for subdevice pointers\n"); 2248 err = -ENOMEM; 2249 goto probe_out; 2250 } 2251 2252 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev); 2253 if (err) { 2254 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); 2255 goto probe_subdev_out; 2256 } 2257 2258 for (i = 0; i < subdev_count; i++) { 2259 subdevdata = &config->subdev_info[i]; 2260 vpif_obj.sd[i] = 2261 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, 2262 i2c_adap, 2263 &subdevdata->board_info, 2264 NULL); 2265 2266 if (!vpif_obj.sd[i]) { 2267 vpif_err("Error registering v4l2 subdevice\n"); 2268 goto probe_subdev_out; 2269 } 2270 v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n", 2271 subdevdata->name); 2272 2273 if (vpif_obj.sd[i]) 2274 vpif_obj.sd[i]->grp_id = 1 << i; 2275 } 2276 2277 v4l2_info(&vpif_obj.v4l2_dev, 2278 "DM646x VPIF capture driver initialized\n"); 2279 return 0; 2280 2281probe_subdev_out: 2282 /* free sub devices memory */ 2283 kfree(vpif_obj.sd); 2284 2285 j = VPIF_CAPTURE_MAX_DEVICES; 2286probe_out: 2287 v4l2_device_unregister(&vpif_obj.v4l2_dev); 2288 for (k = 0; k < j; k++) { 2289 /* Get the pointer to the channel object */ 2290 ch = vpif_obj.dev[k]; 2291 /* Unregister video device */ 2292 video_unregister_device(ch->video_dev); 2293 } 2294 2295vpif_dev_alloc_err: 2296 k = VPIF_CAPTURE_MAX_DEVICES-1; 2297 res = platform_get_resource(pdev, IORESOURCE_IRQ, k); 2298 i = res->end; 2299 2300vpif_int_err: 2301 for (q = k; q >= 0; q--) { 2302 for (m = i; m >= (int)res->start; m--) 2303 free_irq(m, (void *)(&vpif_obj.dev[q]->channel_id)); 2304 2305 res = platform_get_resource(pdev, IORESOURCE_IRQ, q-1); 2306 if (res) 2307 i = res->end; 2308 } 2309 return err; 2310} 2311 2312/** 2313 * vpif_remove() - driver remove handler 2314 * @device: ptr to platform device structure 2315 * 2316 * The vidoe device is unregistered 2317 */ 2318static int vpif_remove(struct platform_device *device) 2319{ 2320 int i; 2321 struct channel_obj *ch; 2322 2323 v4l2_device_unregister(&vpif_obj.v4l2_dev); 2324 2325 /* un-register device */ 2326 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { 2327 /* Get the pointer to the channel object */ 2328 ch = vpif_obj.dev[i]; 2329 /* Unregister video device */ 2330 video_unregister_device(ch->video_dev); 2331 } 2332 return 0; 2333} 2334 2335/** 2336 * vpif_suspend: vpif device suspend 2337 * 2338 * TODO: Add suspend code here 2339 */ 2340static int 2341vpif_suspend(struct device *dev) 2342{ 2343 return -1; 2344} 2345 2346/** 2347 * vpif_resume: vpif device suspend 2348 * 2349 * TODO: Add resume code here 2350 */ 2351static int 2352vpif_resume(struct device *dev) 2353{ 2354 return -1; 2355} 2356 2357static const struct dev_pm_ops vpif_dev_pm_ops = { 2358 .suspend = vpif_suspend, 2359 .resume = vpif_resume, 2360}; 2361 2362static __refdata struct platform_driver vpif_driver = { 2363 .driver = { 2364 .name = "vpif_capture", 2365 .owner = THIS_MODULE, 2366 .pm = &vpif_dev_pm_ops, 2367 }, 2368 .probe = vpif_probe, 2369 .remove = vpif_remove, 2370}; 2371 2372/** 2373 * vpif_init: initialize the vpif driver 2374 * 2375 * This function registers device and driver to the kernel, requests irq 2376 * handler and allocates memory 2377 * for channel objects 2378 */ 2379static __init int vpif_init(void) 2380{ 2381 return platform_driver_register(&vpif_driver); 2382} 2383 2384/** 2385 * vpif_cleanup : This function clean up the vpif capture resources 2386 * 2387 * This will un-registers device and driver to the kernel, frees 2388 * requested irq handler and de-allocates memory allocated for channel 2389 * objects. 2390 */ 2391static void vpif_cleanup(void) 2392{ 2393 struct platform_device *pdev; 2394 struct resource *res; 2395 int irq_num; 2396 int i = 0; 2397 2398 pdev = container_of(vpif_dev, struct platform_device, dev); 2399 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) { 2400 for (irq_num = res->start; irq_num <= res->end; irq_num++) 2401 free_irq(irq_num, 2402 (void *)(&vpif_obj.dev[i]->channel_id)); 2403 i++; 2404 } 2405 2406 platform_driver_unregister(&vpif_driver); 2407 2408 kfree(vpif_obj.sd); 2409 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) 2410 kfree(vpif_obj.dev[i]); 2411} 2412 2413/* Function for module initialization and cleanup */ 2414module_init(vpif_init); 2415module_exit(vpif_cleanup); 2416