1/* 2 * vpif-display - VPIF display driver 3 * Display driver for TI DaVinci VPIF 4 * 5 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/ 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation version 2. 10 * 11 * This program is distributed .as is. WITHOUT ANY WARRANTY of any 12 * kind, whether express or implied; without even the implied warranty 13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17#include <linux/kernel.h> 18#include <linux/init.h> 19#include <linux/module.h> 20#include <linux/errno.h> 21#include <linux/fs.h> 22#include <linux/mm.h> 23#include <linux/interrupt.h> 24#include <linux/workqueue.h> 25#include <linux/string.h> 26#include <linux/videodev2.h> 27#include <linux/wait.h> 28#include <linux/time.h> 29#include <linux/i2c.h> 30#include <linux/platform_device.h> 31#include <linux/io.h> 32#include <linux/slab.h> 33 34#include <asm/irq.h> 35#include <asm/page.h> 36 37#include <media/adv7343.h> 38#include <media/v4l2-device.h> 39#include <media/v4l2-ioctl.h> 40#include <media/v4l2-chip-ident.h> 41 42#include <mach/dm646x.h> 43 44#include "vpif_display.h" 45#include "vpif.h" 46 47MODULE_DESCRIPTION("TI DaVinci VPIF Display driver"); 48MODULE_LICENSE("GPL"); 49MODULE_VERSION(VPIF_DISPLAY_VERSION); 50 51#define DM646X_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50) 52 53#define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg) 54#define vpif_dbg(level, debug, fmt, arg...) \ 55 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg) 56 57static int debug = 1; 58static u32 ch2_numbuffers = 3; 59static u32 ch3_numbuffers = 3; 60static u32 ch2_bufsize = 1920 * 1080 * 2; 61static u32 ch3_bufsize = 720 * 576 * 2; 62 63module_param(debug, int, 0644); 64module_param(ch2_numbuffers, uint, S_IRUGO); 65module_param(ch3_numbuffers, uint, S_IRUGO); 66module_param(ch2_bufsize, uint, S_IRUGO); 67module_param(ch3_bufsize, uint, S_IRUGO); 68 69MODULE_PARM_DESC(debug, "Debug level 0-1"); 70MODULE_PARM_DESC(ch2_numbuffers, "Channel2 buffer count (default:3)"); 71MODULE_PARM_DESC(ch3_numbuffers, "Channel3 buffer count (default:3)"); 72MODULE_PARM_DESC(ch2_bufsize, "Channel2 buffer size (default:1920 x 1080 x 2)"); 73MODULE_PARM_DESC(ch3_bufsize, "Channel3 buffer size (default:720 x 576 x 2)"); 74 75static struct vpif_config_params config_params = { 76 .min_numbuffers = 3, 77 .numbuffers[0] = 3, 78 .numbuffers[1] = 3, 79 .min_bufsize[0] = 720 * 480 * 2, 80 .min_bufsize[1] = 720 * 480 * 2, 81 .channel_bufsize[0] = 1920 * 1080 * 2, 82 .channel_bufsize[1] = 720 * 576 * 2, 83}; 84 85static struct vpif_device vpif_obj = { {NULL} }; 86static struct device *vpif_dev; 87 88/* 89 * vpif_uservirt_to_phys: This function is used to convert user 90 * space virtual address to physical address. 91 */ 92static u32 vpif_uservirt_to_phys(u32 virtp) 93{ 94 struct mm_struct *mm = current->mm; 95 unsigned long physp = 0; 96 struct vm_area_struct *vma; 97 98 vma = find_vma(mm, virtp); 99 100 /* For kernel direct-mapped memory, take the easy way */ 101 if (virtp >= PAGE_OFFSET) { 102 physp = virt_to_phys((void *)virtp); 103 } else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff)) { 104 /* this will catch, kernel-allocated, mmaped-to-usermode addr */ 105 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start); 106 } else { 107 /* otherwise, use get_user_pages() for general userland pages */ 108 int res, nr_pages = 1; 109 struct page *pages; 110 down_read(¤t->mm->mmap_sem); 111 112 res = get_user_pages(current, current->mm, 113 virtp, nr_pages, 1, 0, &pages, NULL); 114 up_read(¤t->mm->mmap_sem); 115 116 if (res == nr_pages) { 117 physp = __pa(page_address(&pages[0]) + 118 (virtp & ~PAGE_MASK)); 119 } else { 120 vpif_err("get_user_pages failed\n"); 121 return 0; 122 } 123 } 124 125 return physp; 126} 127 128/* 129 * buffer_prepare: This is the callback function called from videobuf_qbuf() 130 * function the buffer is prepared and user space virtual address is converted 131 * into physical address 132 */ 133static int vpif_buffer_prepare(struct videobuf_queue *q, 134 struct videobuf_buffer *vb, 135 enum v4l2_field field) 136{ 137 struct vpif_fh *fh = q->priv_data; 138 struct common_obj *common; 139 unsigned long addr; 140 141 common = &fh->channel->common[VPIF_VIDEO_INDEX]; 142 if (VIDEOBUF_NEEDS_INIT == vb->state) { 143 vb->width = common->width; 144 vb->height = common->height; 145 vb->size = vb->width * vb->height; 146 vb->field = field; 147 } 148 vb->state = VIDEOBUF_PREPARED; 149 150 /* if user pointer memory mechanism is used, get the physical 151 * address of the buffer */ 152 if (V4L2_MEMORY_USERPTR == common->memory) { 153 if (!vb->baddr) { 154 vpif_err("buffer_address is 0\n"); 155 return -EINVAL; 156 } 157 158 vb->boff = vpif_uservirt_to_phys(vb->baddr); 159 if (!ISALIGNED(vb->boff)) 160 goto buf_align_exit; 161 } 162 163 addr = vb->boff; 164 if (q->streaming && (V4L2_BUF_TYPE_SLICED_VBI_OUTPUT != q->type)) { 165 if (!ISALIGNED(addr + common->ytop_off) || 166 !ISALIGNED(addr + common->ybtm_off) || 167 !ISALIGNED(addr + common->ctop_off) || 168 !ISALIGNED(addr + common->cbtm_off)) 169 goto buf_align_exit; 170 } 171 return 0; 172 173buf_align_exit: 174 vpif_err("buffer offset not aligned to 8 bytes\n"); 175 return -EINVAL; 176} 177 178/* 179 * vpif_buffer_setup: This function allocates memory for the buffers 180 */ 181static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count, 182 unsigned int *size) 183{ 184 struct vpif_fh *fh = q->priv_data; 185 struct channel_obj *ch = fh->channel; 186 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 187 188 if (V4L2_MEMORY_MMAP != common->memory) 189 return 0; 190 191 *size = config_params.channel_bufsize[ch->channel_id]; 192 if (*count < config_params.min_numbuffers) 193 *count = config_params.min_numbuffers; 194 195 return 0; 196} 197 198/* 199 * vpif_buffer_queue: This function adds the buffer to DMA queue 200 */ 201static void vpif_buffer_queue(struct videobuf_queue *q, 202 struct videobuf_buffer *vb) 203{ 204 struct vpif_fh *fh = q->priv_data; 205 struct common_obj *common; 206 207 common = &fh->channel->common[VPIF_VIDEO_INDEX]; 208 209 /* add the buffer to the DMA queue */ 210 list_add_tail(&vb->queue, &common->dma_queue); 211 vb->state = VIDEOBUF_QUEUED; 212} 213 214/* 215 * vpif_buffer_release: This function is called from the videobuf layer to 216 * free memory allocated to the buffers 217 */ 218static void vpif_buffer_release(struct videobuf_queue *q, 219 struct videobuf_buffer *vb) 220{ 221 struct vpif_fh *fh = q->priv_data; 222 struct channel_obj *ch = fh->channel; 223 struct common_obj *common; 224 unsigned int buf_size = 0; 225 226 common = &ch->common[VPIF_VIDEO_INDEX]; 227 228 videobuf_dma_contig_free(q, vb); 229 vb->state = VIDEOBUF_NEEDS_INIT; 230 231 if (V4L2_MEMORY_MMAP != common->memory) 232 return; 233 234 buf_size = config_params.channel_bufsize[ch->channel_id]; 235} 236 237static struct videobuf_queue_ops video_qops = { 238 .buf_setup = vpif_buffer_setup, 239 .buf_prepare = vpif_buffer_prepare, 240 .buf_queue = vpif_buffer_queue, 241 .buf_release = vpif_buffer_release, 242}; 243static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} }; 244 245static void process_progressive_mode(struct common_obj *common) 246{ 247 unsigned long addr = 0; 248 249 /* Get the next buffer from buffer queue */ 250 common->next_frm = list_entry(common->dma_queue.next, 251 struct videobuf_buffer, queue); 252 /* Remove that buffer from the buffer queue */ 253 list_del(&common->next_frm->queue); 254 /* Mark status of the buffer as active */ 255 common->next_frm->state = VIDEOBUF_ACTIVE; 256 257 /* Set top and bottom field addrs in VPIF registers */ 258 addr = videobuf_to_dma_contig(common->next_frm); 259 common->set_addr(addr + common->ytop_off, 260 addr + common->ybtm_off, 261 addr + common->ctop_off, 262 addr + common->cbtm_off); 263} 264 265static void process_interlaced_mode(int fid, struct common_obj *common) 266{ 267 /* device field id and local field id are in sync */ 268 /* If this is even field */ 269 if (0 == fid) { 270 if (common->cur_frm == common->next_frm) 271 return; 272 273 /* one frame is displayed If next frame is 274 * available, release cur_frm and move on */ 275 /* Copy frame display time */ 276 do_gettimeofday(&common->cur_frm->ts); 277 /* Change status of the cur_frm */ 278 common->cur_frm->state = VIDEOBUF_DONE; 279 /* unlock semaphore on cur_frm */ 280 wake_up_interruptible(&common->cur_frm->done); 281 /* Make cur_frm pointing to next_frm */ 282 common->cur_frm = common->next_frm; 283 284 } else if (1 == fid) { /* odd field */ 285 if (list_empty(&common->dma_queue) 286 || (common->cur_frm != common->next_frm)) { 287 return; 288 } 289 /* one field is displayed configure the next 290 * frame if it is available else hold on current 291 * frame */ 292 /* Get next from the buffer queue */ 293 process_progressive_mode(common); 294 295 } 296} 297 298/* 299 * vpif_channel_isr: It changes status of the displayed buffer, takes next 300 * buffer from the queue and sets its address in VPIF registers 301 */ 302static irqreturn_t vpif_channel_isr(int irq, void *dev_id) 303{ 304 struct vpif_device *dev = &vpif_obj; 305 struct channel_obj *ch; 306 struct common_obj *common; 307 enum v4l2_field field; 308 int fid = -1, i; 309 int channel_id = 0; 310 311 channel_id = *(int *)(dev_id); 312 ch = dev->dev[channel_id]; 313 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field; 314 for (i = 0; i < VPIF_NUMOBJECTS; i++) { 315 common = &ch->common[i]; 316 /* If streaming is started in this channel */ 317 if (0 == common->started) 318 continue; 319 320 if (1 == ch->vpifparams.std_info.frm_fmt) { 321 if (list_empty(&common->dma_queue)) 322 continue; 323 324 /* Progressive mode */ 325 if (!channel_first_int[i][channel_id]) { 326 /* Mark status of the cur_frm to 327 * done and unlock semaphore on it */ 328 do_gettimeofday(&common->cur_frm->ts); 329 common->cur_frm->state = VIDEOBUF_DONE; 330 wake_up_interruptible(&common->cur_frm->done); 331 /* Make cur_frm pointing to next_frm */ 332 common->cur_frm = common->next_frm; 333 } 334 335 channel_first_int[i][channel_id] = 0; 336 process_progressive_mode(common); 337 } else { 338 /* Interlaced mode */ 339 /* If it is first interrupt, ignore it */ 340 341 if (channel_first_int[i][channel_id]) { 342 channel_first_int[i][channel_id] = 0; 343 continue; 344 } 345 346 if (0 == i) { 347 ch->field_id ^= 1; 348 /* Get field id from VPIF registers */ 349 fid = vpif_channel_getfid(ch->channel_id + 2); 350 /* If fid does not match with stored field id */ 351 if (fid != ch->field_id) { 352 /* Make them in sync */ 353 if (0 == fid) 354 ch->field_id = fid; 355 356 return IRQ_HANDLED; 357 } 358 } 359 process_interlaced_mode(fid, common); 360 } 361 } 362 363 return IRQ_HANDLED; 364} 365 366static int vpif_update_std_info(struct channel_obj *ch) 367{ 368 struct video_obj *vid_ch = &ch->video; 369 struct vpif_params *vpifparams = &ch->vpifparams; 370 struct vpif_channel_config_params *std_info = &vpifparams->std_info; 371 const struct vpif_channel_config_params *config; 372 373 int i; 374 375 for (i = 0; i < vpif_ch_params_count; i++) { 376 config = &ch_params[i]; 377 if (config->hd_sd == 0) { 378 vpif_dbg(2, debug, "SD format\n"); 379 if (config->stdid & vid_ch->stdid) { 380 memcpy(std_info, config, sizeof(*config)); 381 break; 382 } 383 } else { 384 vpif_dbg(2, debug, "HD format\n"); 385 if (config->dv_preset == vid_ch->dv_preset) { 386 memcpy(std_info, config, sizeof(*config)); 387 break; 388 } 389 } 390 } 391 392 if (i == vpif_ch_params_count) { 393 vpif_dbg(1, debug, "Format not found\n"); 394 return -EINVAL; 395 } 396 397 return 0; 398} 399 400static int vpif_update_resolution(struct channel_obj *ch) 401{ 402 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 403 struct video_obj *vid_ch = &ch->video; 404 struct vpif_params *vpifparams = &ch->vpifparams; 405 struct vpif_channel_config_params *std_info = &vpifparams->std_info; 406 407 if (!vid_ch->stdid && !vid_ch->dv_preset && !vid_ch->bt_timings.height) 408 return -EINVAL; 409 410 if (vid_ch->stdid || vid_ch->dv_preset) { 411 if (vpif_update_std_info(ch)) 412 return -EINVAL; 413 } 414 415 common->fmt.fmt.pix.width = std_info->width; 416 common->fmt.fmt.pix.height = std_info->height; 417 vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n", 418 common->fmt.fmt.pix.width, common->fmt.fmt.pix.height); 419 420 /* Set height and width paramateres */ 421 common->height = std_info->height; 422 common->width = std_info->width; 423 424 return 0; 425} 426 427/* 428 * vpif_calculate_offsets: This function calculates buffers offset for Y and C 429 * in the top and bottom field 430 */ 431static void vpif_calculate_offsets(struct channel_obj *ch) 432{ 433 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 434 struct vpif_params *vpifparams = &ch->vpifparams; 435 enum v4l2_field field = common->fmt.fmt.pix.field; 436 struct video_obj *vid_ch = &ch->video; 437 unsigned int hpitch, vpitch, sizeimage; 438 439 if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) { 440 if (ch->vpifparams.std_info.frm_fmt) 441 vid_ch->buf_field = V4L2_FIELD_NONE; 442 else 443 vid_ch->buf_field = V4L2_FIELD_INTERLACED; 444 } else { 445 vid_ch->buf_field = common->fmt.fmt.pix.field; 446 } 447 448 if (V4L2_MEMORY_USERPTR == common->memory) 449 sizeimage = common->fmt.fmt.pix.sizeimage; 450 else 451 sizeimage = config_params.channel_bufsize[ch->channel_id]; 452 453 hpitch = common->fmt.fmt.pix.bytesperline; 454 vpitch = sizeimage / (hpitch * 2); 455 if ((V4L2_FIELD_NONE == vid_ch->buf_field) || 456 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { 457 common->ytop_off = 0; 458 common->ybtm_off = hpitch; 459 common->ctop_off = sizeimage / 2; 460 common->cbtm_off = sizeimage / 2 + hpitch; 461 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) { 462 common->ytop_off = 0; 463 common->ybtm_off = sizeimage / 4; 464 common->ctop_off = sizeimage / 2; 465 common->cbtm_off = common->ctop_off + sizeimage / 4; 466 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) { 467 common->ybtm_off = 0; 468 common->ytop_off = sizeimage / 4; 469 common->cbtm_off = sizeimage / 2; 470 common->ctop_off = common->cbtm_off + sizeimage / 4; 471 } 472 473 if ((V4L2_FIELD_NONE == vid_ch->buf_field) || 474 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { 475 vpifparams->video_params.storage_mode = 1; 476 } else { 477 vpifparams->video_params.storage_mode = 0; 478 } 479 480 if (ch->vpifparams.std_info.frm_fmt == 1) { 481 vpifparams->video_params.hpitch = 482 common->fmt.fmt.pix.bytesperline; 483 } else { 484 if ((field == V4L2_FIELD_ANY) || 485 (field == V4L2_FIELD_INTERLACED)) 486 vpifparams->video_params.hpitch = 487 common->fmt.fmt.pix.bytesperline * 2; 488 else 489 vpifparams->video_params.hpitch = 490 common->fmt.fmt.pix.bytesperline; 491 } 492 493 ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid; 494} 495 496static void vpif_config_format(struct channel_obj *ch) 497{ 498 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 499 500 common->fmt.fmt.pix.field = V4L2_FIELD_ANY; 501 if (config_params.numbuffers[ch->channel_id] == 0) 502 common->memory = V4L2_MEMORY_USERPTR; 503 else 504 common->memory = V4L2_MEMORY_MMAP; 505 506 common->fmt.fmt.pix.sizeimage = 507 config_params.channel_bufsize[ch->channel_id]; 508 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P; 509 common->fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 510} 511 512static int vpif_check_format(struct channel_obj *ch, 513 struct v4l2_pix_format *pixfmt) 514{ 515 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 516 enum v4l2_field field = pixfmt->field; 517 u32 sizeimage, hpitch, vpitch; 518 519 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) 520 goto invalid_fmt_exit; 521 522 if (!(VPIF_VALID_FIELD(field))) 523 goto invalid_fmt_exit; 524 525 if (pixfmt->bytesperline <= 0) 526 goto invalid_pitch_exit; 527 528 if (V4L2_MEMORY_USERPTR == common->memory) 529 sizeimage = pixfmt->sizeimage; 530 else 531 sizeimage = config_params.channel_bufsize[ch->channel_id]; 532 533 if (vpif_update_resolution(ch)) 534 return -EINVAL; 535 536 hpitch = pixfmt->bytesperline; 537 vpitch = sizeimage / (hpitch * 2); 538 539 /* Check for valid value of pitch */ 540 if ((hpitch < ch->vpifparams.std_info.width) || 541 (vpitch < ch->vpifparams.std_info.height)) 542 goto invalid_pitch_exit; 543 544 /* Check for 8 byte alignment */ 545 if (!ISALIGNED(hpitch)) { 546 vpif_err("invalid pitch alignment\n"); 547 return -EINVAL; 548 } 549 pixfmt->width = common->fmt.fmt.pix.width; 550 pixfmt->height = common->fmt.fmt.pix.height; 551 552 return 0; 553 554invalid_fmt_exit: 555 vpif_err("invalid field format\n"); 556 return -EINVAL; 557 558invalid_pitch_exit: 559 vpif_err("invalid pitch\n"); 560 return -EINVAL; 561} 562 563static void vpif_config_addr(struct channel_obj *ch, int muxmode) 564{ 565 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 566 567 if (VPIF_CHANNEL3_VIDEO == ch->channel_id) { 568 common->set_addr = ch3_set_videobuf_addr; 569 } else { 570 if (2 == muxmode) 571 common->set_addr = ch2_set_videobuf_addr_yc_nmux; 572 else 573 common->set_addr = ch2_set_videobuf_addr; 574 } 575} 576 577/* 578 * vpif_mmap: It is used to map kernel space buffers into user spaces 579 */ 580static int vpif_mmap(struct file *filep, struct vm_area_struct *vma) 581{ 582 struct vpif_fh *fh = filep->private_data; 583 struct channel_obj *ch = fh->channel; 584 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); 585 586 vpif_dbg(2, debug, "vpif_mmap\n"); 587 588 return videobuf_mmap_mapper(&common->buffer_queue, vma); 589} 590 591/* 592 * vpif_poll: It is used for select/poll system call 593 */ 594static unsigned int vpif_poll(struct file *filep, poll_table *wait) 595{ 596 struct vpif_fh *fh = filep->private_data; 597 struct channel_obj *ch = fh->channel; 598 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 599 600 if (common->started) 601 return videobuf_poll_stream(filep, &common->buffer_queue, wait); 602 603 return 0; 604} 605 606/* 607 * vpif_open: It creates object of file handle structure and stores it in 608 * private_data member of filepointer 609 */ 610static int vpif_open(struct file *filep) 611{ 612 struct video_device *vdev = video_devdata(filep); 613 struct channel_obj *ch = NULL; 614 struct vpif_fh *fh = NULL; 615 616 ch = video_get_drvdata(vdev); 617 /* Allocate memory for the file handle object */ 618 fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL); 619 if (fh == NULL) { 620 vpif_err("unable to allocate memory for file handle object\n"); 621 return -ENOMEM; 622 } 623 624 /* store pointer to fh in private_data member of filep */ 625 filep->private_data = fh; 626 fh->channel = ch; 627 fh->initialized = 0; 628 if (!ch->initialized) { 629 fh->initialized = 1; 630 ch->initialized = 1; 631 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams)); 632 } 633 634 /* Increment channel usrs counter */ 635 atomic_inc(&ch->usrs); 636 /* Set io_allowed[VPIF_VIDEO_INDEX] member to false */ 637 fh->io_allowed[VPIF_VIDEO_INDEX] = 0; 638 /* Initialize priority of this instance to default priority */ 639 fh->prio = V4L2_PRIORITY_UNSET; 640 v4l2_prio_open(&ch->prio, &fh->prio); 641 642 return 0; 643} 644 645/* 646 * vpif_release: This function deletes buffer queue, frees the buffers and 647 * the vpif file handle 648 */ 649static int vpif_release(struct file *filep) 650{ 651 struct vpif_fh *fh = filep->private_data; 652 struct channel_obj *ch = fh->channel; 653 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 654 655 /* if this instance is doing IO */ 656 if (fh->io_allowed[VPIF_VIDEO_INDEX]) { 657 /* Reset io_usrs member of channel object */ 658 common->io_usrs = 0; 659 /* Disable channel */ 660 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { 661 enable_channel2(0); 662 channel2_intr_enable(0); 663 } 664 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) || 665 (2 == common->started)) { 666 enable_channel3(0); 667 channel3_intr_enable(0); 668 } 669 common->started = 0; 670 /* Free buffers allocated */ 671 videobuf_queue_cancel(&common->buffer_queue); 672 videobuf_mmap_free(&common->buffer_queue); 673 common->numbuffers = 674 config_params.numbuffers[ch->channel_id]; 675 } 676 677 /* Decrement channel usrs counter */ 678 atomic_dec(&ch->usrs); 679 /* If this file handle has initialize encoder device, reset it */ 680 if (fh->initialized) 681 ch->initialized = 0; 682 683 /* Close the priority */ 684 v4l2_prio_close(&ch->prio, fh->prio); 685 filep->private_data = NULL; 686 fh->initialized = 0; 687 kfree(fh); 688 689 return 0; 690} 691 692/* functions implementing ioctls */ 693/** 694 * vpif_querycap() - QUERYCAP handler 695 * @file: file ptr 696 * @priv: file handle 697 * @cap: ptr to v4l2_capability structure 698 */ 699static int vpif_querycap(struct file *file, void *priv, 700 struct v4l2_capability *cap) 701{ 702 struct vpif_display_config *config = vpif_dev->platform_data; 703 704 cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; 705 strlcpy(cap->driver, "vpif display", sizeof(cap->driver)); 706 strlcpy(cap->bus_info, "Platform", sizeof(cap->bus_info)); 707 strlcpy(cap->card, config->card_name, sizeof(cap->card)); 708 709 return 0; 710} 711 712static int vpif_enum_fmt_vid_out(struct file *file, void *priv, 713 struct v4l2_fmtdesc *fmt) 714{ 715 if (fmt->index != 0) { 716 vpif_err("Invalid format index\n"); 717 return -EINVAL; 718 } 719 720 /* Fill in the information about format */ 721 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 722 strcpy(fmt->description, "YCbCr4:2:2 YC Planar"); 723 fmt->pixelformat = V4L2_PIX_FMT_YUV422P; 724 725 return 0; 726} 727 728static int vpif_g_fmt_vid_out(struct file *file, void *priv, 729 struct v4l2_format *fmt) 730{ 731 struct vpif_fh *fh = priv; 732 struct channel_obj *ch = fh->channel; 733 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 734 735 /* Check the validity of the buffer type */ 736 if (common->fmt.type != fmt->type) 737 return -EINVAL; 738 739 if (vpif_update_resolution(ch)) 740 return -EINVAL; 741 *fmt = common->fmt; 742 return 0; 743} 744 745static int vpif_s_fmt_vid_out(struct file *file, void *priv, 746 struct v4l2_format *fmt) 747{ 748 struct vpif_fh *fh = priv; 749 struct v4l2_pix_format *pixfmt; 750 struct channel_obj *ch = fh->channel; 751 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 752 int ret = 0; 753 754 if ((VPIF_CHANNEL2_VIDEO == ch->channel_id) 755 || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) { 756 if (!fh->initialized) { 757 vpif_dbg(1, debug, "Channel Busy\n"); 758 return -EBUSY; 759 } 760 761 /* Check for the priority */ 762 ret = v4l2_prio_check(&ch->prio, fh->prio); 763 if (0 != ret) 764 return ret; 765 fh->initialized = 1; 766 } 767 768 if (common->started) { 769 vpif_dbg(1, debug, "Streaming in progress\n"); 770 return -EBUSY; 771 } 772 773 pixfmt = &fmt->fmt.pix; 774 /* Check for valid field format */ 775 ret = vpif_check_format(ch, pixfmt); 776 if (ret) 777 return ret; 778 779 /* store the pix format in the channel object */ 780 common->fmt.fmt.pix = *pixfmt; 781 /* store the format in the channel object */ 782 common->fmt = *fmt; 783 return 0; 784} 785 786static int vpif_try_fmt_vid_out(struct file *file, void *priv, 787 struct v4l2_format *fmt) 788{ 789 struct vpif_fh *fh = priv; 790 struct channel_obj *ch = fh->channel; 791 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 792 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; 793 int ret = 0; 794 795 ret = vpif_check_format(ch, pixfmt); 796 if (ret) { 797 *pixfmt = common->fmt.fmt.pix; 798 pixfmt->sizeimage = pixfmt->width * pixfmt->height * 2; 799 } 800 801 return ret; 802} 803 804static int vpif_reqbufs(struct file *file, void *priv, 805 struct v4l2_requestbuffers *reqbuf) 806{ 807 struct vpif_fh *fh = priv; 808 struct channel_obj *ch = fh->channel; 809 struct common_obj *common; 810 enum v4l2_field field; 811 u8 index = 0; 812 813 /* This file handle has not initialized the channel, 814 It is not allowed to do settings */ 815 if ((VPIF_CHANNEL2_VIDEO == ch->channel_id) 816 || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) { 817 if (!fh->initialized) { 818 vpif_err("Channel Busy\n"); 819 return -EBUSY; 820 } 821 } 822 823 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != reqbuf->type) 824 return -EINVAL; 825 826 index = VPIF_VIDEO_INDEX; 827 828 common = &ch->common[index]; 829 830 if (common->fmt.type != reqbuf->type) 831 return -EINVAL; 832 833 if (0 != common->io_usrs) 834 return -EBUSY; 835 836 if (reqbuf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 837 if (common->fmt.fmt.pix.field == V4L2_FIELD_ANY) 838 field = V4L2_FIELD_INTERLACED; 839 else 840 field = common->fmt.fmt.pix.field; 841 } else { 842 field = V4L2_VBI_INTERLACED; 843 } 844 845 /* Initialize videobuf queue as per the buffer type */ 846 videobuf_queue_dma_contig_init(&common->buffer_queue, 847 &video_qops, NULL, 848 &common->irqlock, 849 reqbuf->type, field, 850 sizeof(struct videobuf_buffer), fh, 851 &common->lock); 852 853 /* Set io allowed member of file handle to TRUE */ 854 fh->io_allowed[index] = 1; 855 /* Increment io usrs member of channel object to 1 */ 856 common->io_usrs = 1; 857 /* Store type of memory requested in channel object */ 858 common->memory = reqbuf->memory; 859 INIT_LIST_HEAD(&common->dma_queue); 860 861 /* Allocate buffers */ 862 return videobuf_reqbufs(&common->buffer_queue, reqbuf); 863} 864 865static int vpif_querybuf(struct file *file, void *priv, 866 struct v4l2_buffer *tbuf) 867{ 868 struct vpif_fh *fh = priv; 869 struct channel_obj *ch = fh->channel; 870 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 871 872 if (common->fmt.type != tbuf->type) 873 return -EINVAL; 874 875 return videobuf_querybuf(&common->buffer_queue, tbuf); 876} 877 878static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) 879{ 880 881 struct vpif_fh *fh = priv; 882 struct channel_obj *ch = fh->channel; 883 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 884 struct v4l2_buffer tbuf = *buf; 885 struct videobuf_buffer *buf1; 886 unsigned long addr = 0; 887 unsigned long flags; 888 int ret = 0; 889 890 if (common->fmt.type != tbuf.type) 891 return -EINVAL; 892 893 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { 894 vpif_err("fh->io_allowed\n"); 895 return -EACCES; 896 } 897 898 if (!(list_empty(&common->dma_queue)) || 899 (common->cur_frm != common->next_frm) || 900 !(common->started) || 901 (common->started && (0 == ch->field_id))) 902 return videobuf_qbuf(&common->buffer_queue, buf); 903 904 /* bufferqueue is empty store buffer address in VPIF registers */ 905 mutex_lock(&common->buffer_queue.vb_lock); 906 buf1 = common->buffer_queue.bufs[tbuf.index]; 907 if (buf1->memory != tbuf.memory) { 908 vpif_err("invalid buffer type\n"); 909 goto qbuf_exit; 910 } 911 912 if ((buf1->state == VIDEOBUF_QUEUED) || 913 (buf1->state == VIDEOBUF_ACTIVE)) { 914 vpif_err("invalid state\n"); 915 goto qbuf_exit; 916 } 917 918 switch (buf1->memory) { 919 case V4L2_MEMORY_MMAP: 920 if (buf1->baddr == 0) 921 goto qbuf_exit; 922 break; 923 924 case V4L2_MEMORY_USERPTR: 925 if (tbuf.length < buf1->bsize) 926 goto qbuf_exit; 927 928 if ((VIDEOBUF_NEEDS_INIT != buf1->state) 929 && (buf1->baddr != tbuf.m.userptr)) { 930 vpif_buffer_release(&common->buffer_queue, buf1); 931 buf1->baddr = tbuf.m.userptr; 932 } 933 break; 934 935 default: 936 goto qbuf_exit; 937 } 938 939 local_irq_save(flags); 940 ret = vpif_buffer_prepare(&common->buffer_queue, buf1, 941 common->buffer_queue.field); 942 if (ret < 0) { 943 local_irq_restore(flags); 944 goto qbuf_exit; 945 } 946 947 buf1->state = VIDEOBUF_ACTIVE; 948 addr = buf1->boff; 949 common->next_frm = buf1; 950 if (tbuf.type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) { 951 common->set_addr((addr + common->ytop_off), 952 (addr + common->ybtm_off), 953 (addr + common->ctop_off), 954 (addr + common->cbtm_off)); 955 } 956 957 local_irq_restore(flags); 958 list_add_tail(&buf1->stream, &common->buffer_queue.stream); 959 mutex_unlock(&common->buffer_queue.vb_lock); 960 return 0; 961 962qbuf_exit: 963 mutex_unlock(&common->buffer_queue.vb_lock); 964 return -EINVAL; 965} 966 967static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id) 968{ 969 struct vpif_fh *fh = priv; 970 struct channel_obj *ch = fh->channel; 971 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 972 int ret = 0; 973 974 if (!(*std_id & DM646X_V4L2_STD)) 975 return -EINVAL; 976 977 if (common->started) { 978 vpif_err("streaming in progress\n"); 979 return -EBUSY; 980 } 981 982 /* Call encoder subdevice function to set the standard */ 983 ch->video.stdid = *std_id; 984 ch->video.dv_preset = V4L2_DV_INVALID; 985 memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings)); 986 987 /* Get the information about the standard */ 988 if (vpif_update_resolution(ch)) 989 return -EINVAL; 990 991 if ((ch->vpifparams.std_info.width * 992 ch->vpifparams.std_info.height * 2) > 993 config_params.channel_bufsize[ch->channel_id]) { 994 vpif_err("invalid std for this size\n"); 995 return -EINVAL; 996 } 997 998 common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width; 999 /* Configure the default format information */ 1000 vpif_config_format(ch); 1001 1002 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video, 1003 s_std_output, *std_id); 1004 if (ret < 0) { 1005 vpif_err("Failed to set output standard\n"); 1006 return ret; 1007 } 1008 1009 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, core, 1010 s_std, *std_id); 1011 if (ret < 0) 1012 vpif_err("Failed to set standard for sub devices\n"); 1013 return ret; 1014} 1015 1016static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) 1017{ 1018 struct vpif_fh *fh = priv; 1019 struct channel_obj *ch = fh->channel; 1020 1021 *std = ch->video.stdid; 1022 return 0; 1023} 1024 1025static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) 1026{ 1027 struct vpif_fh *fh = priv; 1028 struct channel_obj *ch = fh->channel; 1029 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1030 1031 return videobuf_dqbuf(&common->buffer_queue, p, 1032 (file->f_flags & O_NONBLOCK)); 1033} 1034 1035static int vpif_streamon(struct file *file, void *priv, 1036 enum v4l2_buf_type buftype) 1037{ 1038 struct vpif_fh *fh = priv; 1039 struct channel_obj *ch = fh->channel; 1040 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1041 struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id]; 1042 struct vpif_params *vpif = &ch->vpifparams; 1043 struct vpif_display_config *vpif_config_data = 1044 vpif_dev->platform_data; 1045 unsigned long addr = 0; 1046 int ret = 0; 1047 1048 if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1049 vpif_err("buffer type not supported\n"); 1050 return -EINVAL; 1051 } 1052 1053 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { 1054 vpif_err("fh->io_allowed\n"); 1055 return -EACCES; 1056 } 1057 1058 /* If Streaming is already started, return error */ 1059 if (common->started) { 1060 vpif_err("channel->started\n"); 1061 return -EBUSY; 1062 } 1063 1064 if ((ch->channel_id == VPIF_CHANNEL2_VIDEO 1065 && oth_ch->common[VPIF_VIDEO_INDEX].started && 1066 ch->vpifparams.std_info.ycmux_mode == 0) 1067 || ((ch->channel_id == VPIF_CHANNEL3_VIDEO) 1068 && (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) { 1069 vpif_err("other channel is using\n"); 1070 return -EBUSY; 1071 } 1072 1073 ret = vpif_check_format(ch, &common->fmt.fmt.pix); 1074 if (ret < 0) 1075 return ret; 1076 1077 /* Call videobuf_streamon to start streaming in videobuf */ 1078 ret = videobuf_streamon(&common->buffer_queue); 1079 if (ret < 0) { 1080 vpif_err("videobuf_streamon\n"); 1081 return ret; 1082 } 1083 1084 /* If buffer queue is empty, return error */ 1085 if (list_empty(&common->dma_queue)) { 1086 vpif_err("buffer queue is empty\n"); 1087 return -EIO; 1088 } 1089 1090 /* Get the next frame from the buffer queue */ 1091 common->next_frm = common->cur_frm = 1092 list_entry(common->dma_queue.next, 1093 struct videobuf_buffer, queue); 1094 1095 list_del(&common->cur_frm->queue); 1096 /* Mark state of the current frame to active */ 1097 common->cur_frm->state = VIDEOBUF_ACTIVE; 1098 1099 /* Initialize field_id and started member */ 1100 ch->field_id = 0; 1101 common->started = 1; 1102 if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1103 addr = common->cur_frm->boff; 1104 /* Calculate the offset for Y and C data in the buffer */ 1105 vpif_calculate_offsets(ch); 1106 1107 if ((ch->vpifparams.std_info.frm_fmt && 1108 ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) 1109 && (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) 1110 || (!ch->vpifparams.std_info.frm_fmt 1111 && (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) { 1112 vpif_err("conflict in field format and std format\n"); 1113 return -EINVAL; 1114 } 1115 1116 /* clock settings */ 1117 ret = 1118 vpif_config_data->set_clock(ch->vpifparams.std_info.ycmux_mode, 1119 ch->vpifparams.std_info.hd_sd); 1120 if (ret < 0) { 1121 vpif_err("can't set clock\n"); 1122 return ret; 1123 } 1124 1125 /* set the parameters and addresses */ 1126 ret = vpif_set_video_params(vpif, ch->channel_id + 2); 1127 if (ret < 0) 1128 return ret; 1129 1130 common->started = ret; 1131 vpif_config_addr(ch, ret); 1132 common->set_addr((addr + common->ytop_off), 1133 (addr + common->ybtm_off), 1134 (addr + common->ctop_off), 1135 (addr + common->cbtm_off)); 1136 1137 /* Set interrupt for both the fields in VPIF 1138 Register enable channel in VPIF register */ 1139 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { 1140 channel2_intr_assert(); 1141 channel2_intr_enable(1); 1142 enable_channel2(1); 1143 } 1144 1145 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) 1146 || (common->started == 2)) { 1147 channel3_intr_assert(); 1148 channel3_intr_enable(1); 1149 enable_channel3(1); 1150 } 1151 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1; 1152 } 1153 return ret; 1154} 1155 1156static int vpif_streamoff(struct file *file, void *priv, 1157 enum v4l2_buf_type buftype) 1158{ 1159 struct vpif_fh *fh = priv; 1160 struct channel_obj *ch = fh->channel; 1161 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1162 1163 if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1164 vpif_err("buffer type not supported\n"); 1165 return -EINVAL; 1166 } 1167 1168 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { 1169 vpif_err("fh->io_allowed\n"); 1170 return -EACCES; 1171 } 1172 1173 if (!common->started) { 1174 vpif_err("channel->started\n"); 1175 return -EINVAL; 1176 } 1177 1178 if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1179 /* disable channel */ 1180 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { 1181 enable_channel2(0); 1182 channel2_intr_enable(0); 1183 } 1184 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) || 1185 (2 == common->started)) { 1186 enable_channel3(0); 1187 channel3_intr_enable(0); 1188 } 1189 } 1190 1191 common->started = 0; 1192 return videobuf_streamoff(&common->buffer_queue); 1193} 1194 1195static int vpif_cropcap(struct file *file, void *priv, 1196 struct v4l2_cropcap *crop) 1197{ 1198 struct vpif_fh *fh = priv; 1199 struct channel_obj *ch = fh->channel; 1200 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1201 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != crop->type) 1202 return -EINVAL; 1203 1204 crop->bounds.left = crop->bounds.top = 0; 1205 crop->defrect.left = crop->defrect.top = 0; 1206 crop->defrect.height = crop->bounds.height = common->height; 1207 crop->defrect.width = crop->bounds.width = common->width; 1208 1209 return 0; 1210} 1211 1212static int vpif_enum_output(struct file *file, void *fh, 1213 struct v4l2_output *output) 1214{ 1215 1216 struct vpif_display_config *config = vpif_dev->platform_data; 1217 1218 if (output->index >= config->output_count) { 1219 vpif_dbg(1, debug, "Invalid output index\n"); 1220 return -EINVAL; 1221 } 1222 1223 strcpy(output->name, config->output[output->index]); 1224 output->type = V4L2_OUTPUT_TYPE_ANALOG; 1225 output->std = DM646X_V4L2_STD; 1226 1227 return 0; 1228} 1229 1230static int vpif_s_output(struct file *file, void *priv, unsigned int i) 1231{ 1232 struct vpif_fh *fh = priv; 1233 struct channel_obj *ch = fh->channel; 1234 struct video_obj *vid_ch = &ch->video; 1235 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1236 int ret = 0; 1237 1238 if (common->started) { 1239 vpif_err("Streaming in progress\n"); 1240 return -EBUSY; 1241 } 1242 1243 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video, 1244 s_routing, 0, i, 0); 1245 1246 if (ret < 0) 1247 vpif_err("Failed to set output standard\n"); 1248 1249 vid_ch->output_id = i; 1250 return ret; 1251} 1252 1253static int vpif_g_output(struct file *file, void *priv, unsigned int *i) 1254{ 1255 struct vpif_fh *fh = priv; 1256 struct channel_obj *ch = fh->channel; 1257 struct video_obj *vid_ch = &ch->video; 1258 1259 *i = vid_ch->output_id; 1260 1261 return 0; 1262} 1263 1264static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *p) 1265{ 1266 struct vpif_fh *fh = priv; 1267 struct channel_obj *ch = fh->channel; 1268 1269 *p = v4l2_prio_max(&ch->prio); 1270 1271 return 0; 1272} 1273 1274static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p) 1275{ 1276 struct vpif_fh *fh = priv; 1277 struct channel_obj *ch = fh->channel; 1278 1279 return v4l2_prio_change(&ch->prio, &fh->prio, p); 1280} 1281 1282/** 1283 * vpif_enum_dv_presets() - ENUM_DV_PRESETS handler 1284 * @file: file ptr 1285 * @priv: file handle 1286 * @preset: input preset 1287 */ 1288static int vpif_enum_dv_presets(struct file *file, void *priv, 1289 struct v4l2_dv_enum_preset *preset) 1290{ 1291 struct vpif_fh *fh = priv; 1292 struct channel_obj *ch = fh->channel; 1293 struct video_obj *vid_ch = &ch->video; 1294 1295 return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], 1296 video, enum_dv_presets, preset); 1297} 1298 1299/** 1300 * vpif_s_dv_presets() - S_DV_PRESETS handler 1301 * @file: file ptr 1302 * @priv: file handle 1303 * @preset: input preset 1304 */ 1305static int vpif_s_dv_preset(struct file *file, void *priv, 1306 struct v4l2_dv_preset *preset) 1307{ 1308 struct vpif_fh *fh = priv; 1309 struct channel_obj *ch = fh->channel; 1310 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; 1311 struct video_obj *vid_ch = &ch->video; 1312 int ret = 0; 1313 1314 if (common->started) { 1315 vpif_dbg(1, debug, "streaming in progress\n"); 1316 return -EBUSY; 1317 } 1318 1319 ret = v4l2_prio_check(&ch->prio, fh->prio); 1320 if (ret != 0) 1321 return ret; 1322 1323 fh->initialized = 1; 1324 1325 /* Call encoder subdevice function to set the standard */ 1326 if (mutex_lock_interruptible(&common->lock)) 1327 return -ERESTARTSYS; 1328 1329 ch->video.dv_preset = preset->preset; 1330 ch->video.stdid = V4L2_STD_UNKNOWN; 1331 memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings)); 1332 1333 /* Get the information about the standard */ 1334 if (vpif_update_resolution(ch)) { 1335 ret = -EINVAL; 1336 } else { 1337 /* Configure the default format information */ 1338 vpif_config_format(ch); 1339 1340 ret = v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], 1341 video, s_dv_preset, preset); 1342 } 1343 1344 mutex_unlock(&common->lock); 1345 1346 return ret; 1347} 1348/** 1349 * vpif_g_dv_presets() - G_DV_PRESETS handler 1350 * @file: file ptr 1351 * @priv: file handle 1352 * @preset: input preset 1353 */ 1354static int vpif_g_dv_preset(struct file *file, void *priv, 1355 struct v4l2_dv_preset *preset) 1356{ 1357 struct vpif_fh *fh = priv; 1358 struct channel_obj *ch = fh->channel; 1359 1360 preset->preset = ch->video.dv_preset; 1361 1362 return 0; 1363} 1364/** 1365 * vpif_s_dv_timings() - S_DV_TIMINGS handler 1366 * @file: file ptr 1367 * @priv: file handle 1368 * @timings: digital video timings 1369 */ 1370static int vpif_s_dv_timings(struct file *file, void *priv, 1371 struct v4l2_dv_timings *timings) 1372{ 1373 struct vpif_fh *fh = priv; 1374 struct channel_obj *ch = fh->channel; 1375 struct vpif_params *vpifparams = &ch->vpifparams; 1376 struct vpif_channel_config_params *std_info = &vpifparams->std_info; 1377 struct video_obj *vid_ch = &ch->video; 1378 struct v4l2_bt_timings *bt = &vid_ch->bt_timings; 1379 int ret; 1380 1381 if (timings->type != V4L2_DV_BT_656_1120) { 1382 vpif_dbg(2, debug, "Timing type not defined\n"); 1383 return -EINVAL; 1384 } 1385 1386 /* Configure subdevice timings, if any */ 1387 ret = v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], 1388 video, s_dv_timings, timings); 1389 if (ret == -ENOIOCTLCMD) { 1390 vpif_dbg(2, debug, "Custom DV timings not supported by " 1391 "subdevice\n"); 1392 return -EINVAL; 1393 } 1394 if (ret < 0) { 1395 vpif_dbg(2, debug, "Error setting custom DV timings\n"); 1396 return ret; 1397 } 1398 1399 if (!(timings->bt.width && timings->bt.height && 1400 (timings->bt.hbackporch || 1401 timings->bt.hfrontporch || 1402 timings->bt.hsync) && 1403 timings->bt.vfrontporch && 1404 (timings->bt.vbackporch || 1405 timings->bt.vsync))) { 1406 vpif_dbg(2, debug, "Timings for width, height, " 1407 "horizontal back porch, horizontal sync, " 1408 "horizontal front porch, vertical back porch, " 1409 "vertical sync and vertical back porch " 1410 "must be defined\n"); 1411 return -EINVAL; 1412 } 1413 1414 *bt = timings->bt; 1415 1416 /* Configure video port timings */ 1417 1418 std_info->eav2sav = bt->hbackporch + bt->hfrontporch + 1419 bt->hsync - 8; 1420 std_info->sav2eav = bt->width; 1421 1422 std_info->l1 = 1; 1423 std_info->l3 = bt->vsync + bt->vbackporch + 1; 1424 1425 if (bt->interlaced) { 1426 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) { 1427 std_info->vsize = bt->height * 2 + 1428 bt->vfrontporch + bt->vsync + bt->vbackporch + 1429 bt->il_vfrontporch + bt->il_vsync + 1430 bt->il_vbackporch; 1431 std_info->l5 = std_info->vsize/2 - 1432 (bt->vfrontporch - 1); 1433 std_info->l7 = std_info->vsize/2 + 1; 1434 std_info->l9 = std_info->l7 + bt->il_vsync + 1435 bt->il_vbackporch + 1; 1436 std_info->l11 = std_info->vsize - 1437 (bt->il_vfrontporch - 1); 1438 } else { 1439 vpif_dbg(2, debug, "Required timing values for " 1440 "interlaced BT format missing\n"); 1441 return -EINVAL; 1442 } 1443 } else { 1444 std_info->vsize = bt->height + bt->vfrontporch + 1445 bt->vsync + bt->vbackporch; 1446 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1); 1447 } 1448 strncpy(std_info->name, "Custom timings BT656/1120", 1449 VPIF_MAX_NAME); 1450 std_info->width = bt->width; 1451 std_info->height = bt->height; 1452 std_info->frm_fmt = bt->interlaced ? 0 : 1; 1453 std_info->ycmux_mode = 0; 1454 std_info->capture_format = 0; 1455 std_info->vbi_supported = 0; 1456 std_info->hd_sd = 1; 1457 std_info->stdid = 0; 1458 std_info->dv_preset = V4L2_DV_INVALID; 1459 1460 vid_ch->stdid = 0; 1461 vid_ch->dv_preset = V4L2_DV_INVALID; 1462 1463 return 0; 1464} 1465 1466/** 1467 * vpif_g_dv_timings() - G_DV_TIMINGS handler 1468 * @file: file ptr 1469 * @priv: file handle 1470 * @timings: digital video timings 1471 */ 1472static int vpif_g_dv_timings(struct file *file, void *priv, 1473 struct v4l2_dv_timings *timings) 1474{ 1475 struct vpif_fh *fh = priv; 1476 struct channel_obj *ch = fh->channel; 1477 struct video_obj *vid_ch = &ch->video; 1478 struct v4l2_bt_timings *bt = &vid_ch->bt_timings; 1479 1480 timings->bt = *bt; 1481 1482 return 0; 1483} 1484 1485/* 1486 * vpif_g_chip_ident() - Identify the chip 1487 * @file: file ptr 1488 * @priv: file handle 1489 * @chip: chip identity 1490 * 1491 * Returns zero or -EINVAL if read operations fails. 1492 */ 1493static int vpif_g_chip_ident(struct file *file, void *priv, 1494 struct v4l2_dbg_chip_ident *chip) 1495{ 1496 chip->ident = V4L2_IDENT_NONE; 1497 chip->revision = 0; 1498 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER && 1499 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) { 1500 vpif_dbg(2, debug, "match_type is invalid.\n"); 1501 return -EINVAL; 1502 } 1503 1504 return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core, 1505 g_chip_ident, chip); 1506} 1507 1508#ifdef CONFIG_VIDEO_ADV_DEBUG 1509/* 1510 * vpif_dbg_g_register() - Read register 1511 * @file: file ptr 1512 * @priv: file handle 1513 * @reg: register to be read 1514 * 1515 * Debugging only 1516 * Returns zero or -EINVAL if read operations fails. 1517 */ 1518static int vpif_dbg_g_register(struct file *file, void *priv, 1519 struct v4l2_dbg_register *reg){ 1520 struct vpif_fh *fh = priv; 1521 struct channel_obj *ch = fh->channel; 1522 struct video_obj *vid_ch = &ch->video; 1523 1524 return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], core, 1525 g_register, reg); 1526} 1527 1528/* 1529 * vpif_dbg_s_register() - Write to register 1530 * @file: file ptr 1531 * @priv: file handle 1532 * @reg: register to be modified 1533 * 1534 * Debugging only 1535 * Returns zero or -EINVAL if write operations fails. 1536 */ 1537static int vpif_dbg_s_register(struct file *file, void *priv, 1538 struct v4l2_dbg_register *reg){ 1539 struct vpif_fh *fh = priv; 1540 struct channel_obj *ch = fh->channel; 1541 struct video_obj *vid_ch = &ch->video; 1542 1543 return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], core, 1544 s_register, reg); 1545} 1546#endif 1547 1548/* 1549 * vpif_log_status() - Status information 1550 * @file: file ptr 1551 * @priv: file handle 1552 * 1553 * Returns zero. 1554 */ 1555static int vpif_log_status(struct file *filep, void *priv) 1556{ 1557 /* status for sub devices */ 1558 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status); 1559 1560 return 0; 1561} 1562 1563/* vpif display ioctl operations */ 1564static const struct v4l2_ioctl_ops vpif_ioctl_ops = { 1565 .vidioc_querycap = vpif_querycap, 1566 .vidioc_g_priority = vpif_g_priority, 1567 .vidioc_s_priority = vpif_s_priority, 1568 .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out, 1569 .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out, 1570 .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out, 1571 .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out, 1572 .vidioc_reqbufs = vpif_reqbufs, 1573 .vidioc_querybuf = vpif_querybuf, 1574 .vidioc_qbuf = vpif_qbuf, 1575 .vidioc_dqbuf = vpif_dqbuf, 1576 .vidioc_streamon = vpif_streamon, 1577 .vidioc_streamoff = vpif_streamoff, 1578 .vidioc_s_std = vpif_s_std, 1579 .vidioc_g_std = vpif_g_std, 1580 .vidioc_enum_output = vpif_enum_output, 1581 .vidioc_s_output = vpif_s_output, 1582 .vidioc_g_output = vpif_g_output, 1583 .vidioc_cropcap = vpif_cropcap, 1584 .vidioc_enum_dv_presets = vpif_enum_dv_presets, 1585 .vidioc_s_dv_preset = vpif_s_dv_preset, 1586 .vidioc_g_dv_preset = vpif_g_dv_preset, 1587 .vidioc_s_dv_timings = vpif_s_dv_timings, 1588 .vidioc_g_dv_timings = vpif_g_dv_timings, 1589 .vidioc_g_chip_ident = vpif_g_chip_ident, 1590#ifdef CONFIG_VIDEO_ADV_DEBUG 1591 .vidioc_g_register = vpif_dbg_g_register, 1592 .vidioc_s_register = vpif_dbg_s_register, 1593#endif 1594 .vidioc_log_status = vpif_log_status, 1595}; 1596 1597static const struct v4l2_file_operations vpif_fops = { 1598 .owner = THIS_MODULE, 1599 .open = vpif_open, 1600 .release = vpif_release, 1601 .unlocked_ioctl = video_ioctl2, 1602 .mmap = vpif_mmap, 1603 .poll = vpif_poll 1604}; 1605 1606static struct video_device vpif_video_template = { 1607 .name = "vpif", 1608 .fops = &vpif_fops, 1609 .ioctl_ops = &vpif_ioctl_ops, 1610 .tvnorms = DM646X_V4L2_STD, 1611 .current_norm = V4L2_STD_625_50, 1612 1613}; 1614 1615/*Configure the channels, buffer sizei, request irq */ 1616static int initialize_vpif(void) 1617{ 1618 int free_channel_objects_index; 1619 int free_buffer_channel_index; 1620 int free_buffer_index; 1621 int err = 0, i, j; 1622 1623 /* Default number of buffers should be 3 */ 1624 if ((ch2_numbuffers > 0) && 1625 (ch2_numbuffers < config_params.min_numbuffers)) 1626 ch2_numbuffers = config_params.min_numbuffers; 1627 if ((ch3_numbuffers > 0) && 1628 (ch3_numbuffers < config_params.min_numbuffers)) 1629 ch3_numbuffers = config_params.min_numbuffers; 1630 1631 /* Set buffer size to min buffers size if invalid buffer size is 1632 * given */ 1633 if (ch2_bufsize < config_params.min_bufsize[VPIF_CHANNEL2_VIDEO]) 1634 ch2_bufsize = 1635 config_params.min_bufsize[VPIF_CHANNEL2_VIDEO]; 1636 if (ch3_bufsize < config_params.min_bufsize[VPIF_CHANNEL3_VIDEO]) 1637 ch3_bufsize = 1638 config_params.min_bufsize[VPIF_CHANNEL3_VIDEO]; 1639 1640 config_params.numbuffers[VPIF_CHANNEL2_VIDEO] = ch2_numbuffers; 1641 1642 if (ch2_numbuffers) { 1643 config_params.channel_bufsize[VPIF_CHANNEL2_VIDEO] = 1644 ch2_bufsize; 1645 } 1646 config_params.numbuffers[VPIF_CHANNEL3_VIDEO] = ch3_numbuffers; 1647 1648 if (ch3_numbuffers) { 1649 config_params.channel_bufsize[VPIF_CHANNEL3_VIDEO] = 1650 ch3_bufsize; 1651 } 1652 1653 /* Allocate memory for six channel objects */ 1654 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { 1655 vpif_obj.dev[i] = 1656 kzalloc(sizeof(struct channel_obj), GFP_KERNEL); 1657 /* If memory allocation fails, return error */ 1658 if (!vpif_obj.dev[i]) { 1659 free_channel_objects_index = i; 1660 err = -ENOMEM; 1661 goto vpif_init_free_channel_objects; 1662 } 1663 } 1664 1665 free_channel_objects_index = VPIF_DISPLAY_MAX_DEVICES; 1666 free_buffer_channel_index = VPIF_DISPLAY_NUM_CHANNELS; 1667 free_buffer_index = config_params.numbuffers[i - 1]; 1668 1669 return 0; 1670 1671vpif_init_free_channel_objects: 1672 for (j = 0; j < free_channel_objects_index; j++) 1673 kfree(vpif_obj.dev[j]); 1674 return err; 1675} 1676 1677/* 1678 * vpif_probe: This function creates device entries by register itself to the 1679 * V4L2 driver and initializes fields of each channel objects 1680 */ 1681static __init int vpif_probe(struct platform_device *pdev) 1682{ 1683 struct vpif_subdev_info *subdevdata; 1684 struct vpif_display_config *config; 1685 int i, j = 0, k, q, m, err = 0; 1686 struct i2c_adapter *i2c_adap; 1687 struct common_obj *common; 1688 struct channel_obj *ch; 1689 struct video_device *vfd; 1690 struct resource *res; 1691 int subdev_count; 1692 1693 vpif_dev = &pdev->dev; 1694 1695 err = initialize_vpif(); 1696 1697 if (err) { 1698 v4l2_err(vpif_dev->driver, "Error initializing vpif\n"); 1699 return err; 1700 } 1701 1702 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev); 1703 if (err) { 1704 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); 1705 return err; 1706 } 1707 1708 k = 0; 1709 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) { 1710 for (i = res->start; i <= res->end; i++) { 1711 if (request_irq(i, vpif_channel_isr, IRQF_DISABLED, 1712 "DM646x_Display", 1713 (void *)(&vpif_obj.dev[k]->channel_id))) { 1714 err = -EBUSY; 1715 goto vpif_int_err; 1716 } 1717 } 1718 k++; 1719 } 1720 1721 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { 1722 1723 /* Get the pointer to the channel object */ 1724 ch = vpif_obj.dev[i]; 1725 1726 /* Allocate memory for video device */ 1727 vfd = video_device_alloc(); 1728 if (vfd == NULL) { 1729 for (j = 0; j < i; j++) { 1730 ch = vpif_obj.dev[j]; 1731 video_device_release(ch->video_dev); 1732 } 1733 err = -ENOMEM; 1734 goto vpif_int_err; 1735 } 1736 1737 /* Initialize field of video device */ 1738 *vfd = vpif_video_template; 1739 vfd->v4l2_dev = &vpif_obj.v4l2_dev; 1740 vfd->release = video_device_release; 1741 snprintf(vfd->name, sizeof(vfd->name), 1742 "DM646x_VPIFDisplay_DRIVER_V%s", 1743 VPIF_DISPLAY_VERSION); 1744 1745 /* Set video_dev to the video device */ 1746 ch->video_dev = vfd; 1747 } 1748 1749 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) { 1750 ch = vpif_obj.dev[j]; 1751 /* Initialize field of the channel objects */ 1752 atomic_set(&ch->usrs, 0); 1753 for (k = 0; k < VPIF_NUMOBJECTS; k++) { 1754 ch->common[k].numbuffers = 0; 1755 common = &ch->common[k]; 1756 common->io_usrs = 0; 1757 common->started = 0; 1758 spin_lock_init(&common->irqlock); 1759 mutex_init(&common->lock); 1760 common->numbuffers = 0; 1761 common->set_addr = NULL; 1762 common->ytop_off = common->ybtm_off = 0; 1763 common->ctop_off = common->cbtm_off = 0; 1764 common->cur_frm = common->next_frm = NULL; 1765 memset(&common->fmt, 0, sizeof(common->fmt)); 1766 common->numbuffers = config_params.numbuffers[k]; 1767 1768 } 1769 ch->initialized = 0; 1770 ch->channel_id = j; 1771 if (j < 2) 1772 ch->common[VPIF_VIDEO_INDEX].numbuffers = 1773 config_params.numbuffers[ch->channel_id]; 1774 else 1775 ch->common[VPIF_VIDEO_INDEX].numbuffers = 0; 1776 1777 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams)); 1778 1779 /* Initialize prio member of channel object */ 1780 v4l2_prio_init(&ch->prio); 1781 ch->common[VPIF_VIDEO_INDEX].fmt.type = 1782 V4L2_BUF_TYPE_VIDEO_OUTPUT; 1783 ch->video_dev->lock = &common->lock; 1784 1785 /* register video device */ 1786 vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n", 1787 (int)ch, (int)&ch->video_dev); 1788 1789 err = video_register_device(ch->video_dev, 1790 VFL_TYPE_GRABBER, (j ? 3 : 2)); 1791 if (err < 0) 1792 goto probe_out; 1793 1794 video_set_drvdata(ch->video_dev, ch); 1795 } 1796 1797 i2c_adap = i2c_get_adapter(1); 1798 config = pdev->dev.platform_data; 1799 subdev_count = config->subdev_count; 1800 subdevdata = config->subdevinfo; 1801 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count, 1802 GFP_KERNEL); 1803 if (vpif_obj.sd == NULL) { 1804 vpif_err("unable to allocate memory for subdevice pointers\n"); 1805 err = -ENOMEM; 1806 goto probe_out; 1807 } 1808 1809 for (i = 0; i < subdev_count; i++) { 1810 vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, 1811 i2c_adap, 1812 &subdevdata[i].board_info, 1813 NULL); 1814 if (!vpif_obj.sd[i]) { 1815 vpif_err("Error registering v4l2 subdevice\n"); 1816 goto probe_subdev_out; 1817 } 1818 1819 if (vpif_obj.sd[i]) 1820 vpif_obj.sd[i]->grp_id = 1 << i; 1821 } 1822 1823 v4l2_info(&vpif_obj.v4l2_dev, 1824 "DM646x VPIF display driver initialized\n"); 1825 return 0; 1826 1827probe_subdev_out: 1828 kfree(vpif_obj.sd); 1829probe_out: 1830 for (k = 0; k < j; k++) { 1831 ch = vpif_obj.dev[k]; 1832 video_unregister_device(ch->video_dev); 1833 video_device_release(ch->video_dev); 1834 ch->video_dev = NULL; 1835 } 1836vpif_int_err: 1837 v4l2_device_unregister(&vpif_obj.v4l2_dev); 1838 vpif_err("VPIF IRQ request failed\n"); 1839 for (q = k; k >= 0; k--) { 1840 for (m = i; m >= res->start; m--) 1841 free_irq(m, (void *)(&vpif_obj.dev[k]->channel_id)); 1842 res = platform_get_resource(pdev, IORESOURCE_IRQ, k-1); 1843 m = res->end; 1844 } 1845 1846 return err; 1847} 1848 1849/* 1850 * vpif_remove: It un-register channels from V4L2 driver 1851 */ 1852static int vpif_remove(struct platform_device *device) 1853{ 1854 struct channel_obj *ch; 1855 int i; 1856 1857 v4l2_device_unregister(&vpif_obj.v4l2_dev); 1858 1859 /* un-register device */ 1860 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { 1861 /* Get the pointer to the channel object */ 1862 ch = vpif_obj.dev[i]; 1863 /* Unregister video device */ 1864 video_unregister_device(ch->video_dev); 1865 1866 ch->video_dev = NULL; 1867 } 1868 1869 return 0; 1870} 1871 1872static __refdata struct platform_driver vpif_driver = { 1873 .driver = { 1874 .name = "vpif_display", 1875 .owner = THIS_MODULE, 1876 }, 1877 .probe = vpif_probe, 1878 .remove = vpif_remove, 1879}; 1880 1881static __init int vpif_init(void) 1882{ 1883 return platform_driver_register(&vpif_driver); 1884} 1885 1886/* 1887 * vpif_cleanup: This function un-registers device and driver to the kernel, 1888 * frees requested irq handler and de-allocates memory allocated for channel 1889 * objects. 1890 */ 1891static void vpif_cleanup(void) 1892{ 1893 struct platform_device *pdev; 1894 struct resource *res; 1895 int irq_num; 1896 int i = 0; 1897 1898 pdev = container_of(vpif_dev, struct platform_device, dev); 1899 1900 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) { 1901 for (irq_num = res->start; irq_num <= res->end; irq_num++) 1902 free_irq(irq_num, 1903 (void *)(&vpif_obj.dev[i]->channel_id)); 1904 i++; 1905 } 1906 1907 platform_driver_unregister(&vpif_driver); 1908 kfree(vpif_obj.sd); 1909 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) 1910 kfree(vpif_obj.dev[i]); 1911} 1912 1913module_init(vpif_init); 1914module_exit(vpif_cleanup); 1915