1/* 2 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver 3 * 4 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd. 5 * Sylwester Nawrocki <s.nawrocki@samsung.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12#include <linux/module.h> 13#include <linux/kernel.h> 14#include <linux/types.h> 15#include <linux/errno.h> 16#include <linux/bug.h> 17#include <linux/interrupt.h> 18#include <linux/device.h> 19#include <linux/pm_runtime.h> 20#include <linux/list.h> 21#include <linux/slab.h> 22 23#include <linux/videodev2.h> 24#include <media/v4l2-device.h> 25#include <media/v4l2-ioctl.h> 26#include <media/v4l2-mem2mem.h> 27#include <media/videobuf2-core.h> 28#include <media/videobuf2-dma-contig.h> 29 30#include "common.h" 31#include "fimc-core.h" 32#include "fimc-reg.h" 33#include "media-dev.h" 34 35static int fimc_capture_hw_init(struct fimc_dev *fimc) 36{ 37 struct fimc_source_info *si = &fimc->vid_cap.source_config; 38 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 39 int ret; 40 unsigned long flags; 41 42 if (ctx == NULL || ctx->s_frame.fmt == NULL) 43 return -EINVAL; 44 45 if (si->fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK) { 46 ret = fimc_hw_camblk_cfg_writeback(fimc); 47 if (ret < 0) 48 return ret; 49 } 50 51 spin_lock_irqsave(&fimc->slock, flags); 52 fimc_prepare_dma_offset(ctx, &ctx->d_frame); 53 fimc_set_yuv_order(ctx); 54 55 fimc_hw_set_camera_polarity(fimc, si); 56 fimc_hw_set_camera_type(fimc, si); 57 fimc_hw_set_camera_source(fimc, si); 58 fimc_hw_set_camera_offset(fimc, &ctx->s_frame); 59 60 ret = fimc_set_scaler_info(ctx); 61 if (!ret) { 62 fimc_hw_set_input_path(ctx); 63 fimc_hw_set_prescaler(ctx); 64 fimc_hw_set_mainscaler(ctx); 65 fimc_hw_set_target_format(ctx); 66 fimc_hw_set_rotation(ctx); 67 fimc_hw_set_effect(ctx); 68 fimc_hw_set_output_path(ctx); 69 fimc_hw_set_out_dma(ctx); 70 if (fimc->drv_data->alpha_color) 71 fimc_hw_set_rgb_alpha(ctx); 72 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state); 73 } 74 spin_unlock_irqrestore(&fimc->slock, flags); 75 return ret; 76} 77 78/* 79 * Reinitialize the driver so it is ready to start the streaming again. 80 * Set fimc->state to indicate stream off and the hardware shut down state. 81 * If not suspending (@suspend is false), return any buffers to videobuf2. 82 * Otherwise put any owned buffers onto the pending buffers queue, so they 83 * can be re-spun when the device is being resumed. Also perform FIMC 84 * software reset and disable streaming on the whole pipeline if required. 85 */ 86static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend) 87{ 88 struct fimc_vid_cap *cap = &fimc->vid_cap; 89 struct fimc_vid_buffer *buf; 90 unsigned long flags; 91 bool streaming; 92 93 spin_lock_irqsave(&fimc->slock, flags); 94 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM); 95 96 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT | 97 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM); 98 if (suspend) 99 fimc->state |= (1 << ST_CAPT_SUSPENDED); 100 else 101 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED); 102 103 /* Release unused buffers */ 104 while (!suspend && !list_empty(&cap->pending_buf_q)) { 105 buf = fimc_pending_queue_pop(cap); 106 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 107 } 108 /* If suspending put unused buffers onto pending queue */ 109 while (!list_empty(&cap->active_buf_q)) { 110 buf = fimc_active_queue_pop(cap); 111 if (suspend) 112 fimc_pending_queue_add(cap, buf); 113 else 114 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 115 } 116 117 fimc_hw_reset(fimc); 118 cap->buf_index = 0; 119 120 spin_unlock_irqrestore(&fimc->slock, flags); 121 122 if (streaming) 123 return fimc_pipeline_call(&cap->ve, set_stream, 0); 124 else 125 return 0; 126} 127 128static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend) 129{ 130 unsigned long flags; 131 132 if (!fimc_capture_active(fimc)) 133 return 0; 134 135 spin_lock_irqsave(&fimc->slock, flags); 136 set_bit(ST_CAPT_SHUT, &fimc->state); 137 fimc_deactivate_capture(fimc); 138 spin_unlock_irqrestore(&fimc->slock, flags); 139 140 wait_event_timeout(fimc->irq_queue, 141 !test_bit(ST_CAPT_SHUT, &fimc->state), 142 (2*HZ/10)); /* 200 ms */ 143 144 return fimc_capture_state_cleanup(fimc, suspend); 145} 146 147/** 148 * fimc_capture_config_update - apply the camera interface configuration 149 * 150 * To be called from within the interrupt handler with fimc.slock 151 * spinlock held. It updates the camera pixel crop, rotation and 152 * image flip in H/W. 153 */ 154static int fimc_capture_config_update(struct fimc_ctx *ctx) 155{ 156 struct fimc_dev *fimc = ctx->fimc_dev; 157 int ret; 158 159 fimc_hw_set_camera_offset(fimc, &ctx->s_frame); 160 161 ret = fimc_set_scaler_info(ctx); 162 if (ret) 163 return ret; 164 165 fimc_hw_set_prescaler(ctx); 166 fimc_hw_set_mainscaler(ctx); 167 fimc_hw_set_target_format(ctx); 168 fimc_hw_set_rotation(ctx); 169 fimc_hw_set_effect(ctx); 170 fimc_prepare_dma_offset(ctx, &ctx->d_frame); 171 fimc_hw_set_out_dma(ctx); 172 if (fimc->drv_data->alpha_color) 173 fimc_hw_set_rgb_alpha(ctx); 174 175 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state); 176 return ret; 177} 178 179void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf) 180{ 181 struct fimc_vid_cap *cap = &fimc->vid_cap; 182 struct fimc_pipeline *p = to_fimc_pipeline(cap->ve.pipe); 183 struct v4l2_subdev *csis = p->subdevs[IDX_CSIS]; 184 struct fimc_frame *f = &cap->ctx->d_frame; 185 struct fimc_vid_buffer *v_buf; 186 struct timeval *tv; 187 struct timespec ts; 188 189 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) { 190 wake_up(&fimc->irq_queue); 191 goto done; 192 } 193 194 if (!list_empty(&cap->active_buf_q) && 195 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) { 196 ktime_get_real_ts(&ts); 197 198 v_buf = fimc_active_queue_pop(cap); 199 200 tv = &v_buf->vb.v4l2_buf.timestamp; 201 tv->tv_sec = ts.tv_sec; 202 tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC; 203 v_buf->vb.v4l2_buf.sequence = cap->frame_count++; 204 205 vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE); 206 } 207 208 if (!list_empty(&cap->pending_buf_q)) { 209 210 v_buf = fimc_pending_queue_pop(cap); 211 fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index); 212 v_buf->index = cap->buf_index; 213 214 /* Move the buffer to the capture active queue */ 215 fimc_active_queue_add(cap, v_buf); 216 217 dbg("next frame: %d, done frame: %d", 218 fimc_hw_get_frame_index(fimc), v_buf->index); 219 220 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) 221 cap->buf_index = 0; 222 } 223 /* 224 * Set up a buffer at MIPI-CSIS if current image format 225 * requires the frame embedded data capture. 226 */ 227 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) { 228 unsigned int plane = ffs(f->fmt->mdataplanes) - 1; 229 unsigned int size = f->payload[plane]; 230 s32 index = fimc_hw_get_frame_index(fimc); 231 void *vaddr; 232 233 list_for_each_entry(v_buf, &cap->active_buf_q, list) { 234 if (v_buf->index != index) 235 continue; 236 vaddr = vb2_plane_vaddr(&v_buf->vb, plane); 237 v4l2_subdev_call(csis, video, s_rx_buffer, 238 vaddr, &size); 239 break; 240 } 241 } 242 243 if (cap->active_buf_cnt == 0) { 244 if (deq_buf) 245 clear_bit(ST_CAPT_RUN, &fimc->state); 246 247 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) 248 cap->buf_index = 0; 249 } else { 250 set_bit(ST_CAPT_RUN, &fimc->state); 251 } 252 253 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state)) 254 fimc_capture_config_update(cap->ctx); 255done: 256 if (cap->active_buf_cnt == 1) { 257 fimc_deactivate_capture(fimc); 258 clear_bit(ST_CAPT_STREAM, &fimc->state); 259 } 260 261 dbg("frame: %d, active_buf_cnt: %d", 262 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt); 263} 264 265 266static int start_streaming(struct vb2_queue *q, unsigned int count) 267{ 268 struct fimc_ctx *ctx = q->drv_priv; 269 struct fimc_dev *fimc = ctx->fimc_dev; 270 struct fimc_vid_cap *vid_cap = &fimc->vid_cap; 271 int min_bufs; 272 int ret; 273 274 vid_cap->frame_count = 0; 275 276 ret = fimc_capture_hw_init(fimc); 277 if (ret) { 278 fimc_capture_state_cleanup(fimc, false); 279 return ret; 280 } 281 282 set_bit(ST_CAPT_PEND, &fimc->state); 283 284 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1; 285 286 if (vid_cap->active_buf_cnt >= min_bufs && 287 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) { 288 fimc_activate_capture(ctx); 289 290 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state)) 291 return fimc_pipeline_call(&vid_cap->ve, set_stream, 1); 292 } 293 294 return 0; 295} 296 297static void stop_streaming(struct vb2_queue *q) 298{ 299 struct fimc_ctx *ctx = q->drv_priv; 300 struct fimc_dev *fimc = ctx->fimc_dev; 301 302 if (!fimc_capture_active(fimc)) 303 return; 304 305 fimc_stop_capture(fimc, false); 306} 307 308int fimc_capture_suspend(struct fimc_dev *fimc) 309{ 310 bool suspend = fimc_capture_busy(fimc); 311 312 int ret = fimc_stop_capture(fimc, suspend); 313 if (ret) 314 return ret; 315 return fimc_pipeline_call(&fimc->vid_cap.ve, close); 316} 317 318static void buffer_queue(struct vb2_buffer *vb); 319 320int fimc_capture_resume(struct fimc_dev *fimc) 321{ 322 struct fimc_vid_cap *vid_cap = &fimc->vid_cap; 323 struct exynos_video_entity *ve = &vid_cap->ve; 324 struct fimc_vid_buffer *buf; 325 int i; 326 327 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state)) 328 return 0; 329 330 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q); 331 vid_cap->buf_index = 0; 332 fimc_pipeline_call(ve, open, &ve->vdev.entity, false); 333 fimc_capture_hw_init(fimc); 334 335 clear_bit(ST_CAPT_SUSPENDED, &fimc->state); 336 337 for (i = 0; i < vid_cap->reqbufs_count; i++) { 338 if (list_empty(&vid_cap->pending_buf_q)) 339 break; 340 buf = fimc_pending_queue_pop(vid_cap); 341 buffer_queue(&buf->vb); 342 } 343 return 0; 344 345} 346 347static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt, 348 unsigned int *num_buffers, unsigned int *num_planes, 349 unsigned int sizes[], void *allocators[]) 350{ 351 const struct v4l2_pix_format_mplane *pixm = NULL; 352 struct fimc_ctx *ctx = vq->drv_priv; 353 struct fimc_frame *frame = &ctx->d_frame; 354 struct fimc_fmt *fmt = frame->fmt; 355 unsigned long wh; 356 int i; 357 358 if (pfmt) { 359 pixm = &pfmt->fmt.pix_mp; 360 fmt = fimc_find_format(&pixm->pixelformat, NULL, 361 FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1); 362 wh = pixm->width * pixm->height; 363 } else { 364 wh = frame->f_width * frame->f_height; 365 } 366 367 if (fmt == NULL) 368 return -EINVAL; 369 370 *num_planes = fmt->memplanes; 371 372 for (i = 0; i < fmt->memplanes; i++) { 373 unsigned int size = (wh * fmt->depth[i]) / 8; 374 if (pixm) 375 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage); 376 else if (fimc_fmt_is_user_defined(fmt->color)) 377 sizes[i] = frame->payload[i]; 378 else 379 sizes[i] = max_t(u32, size, frame->payload[i]); 380 381 allocators[i] = ctx->fimc_dev->alloc_ctx; 382 } 383 384 return 0; 385} 386 387static int buffer_prepare(struct vb2_buffer *vb) 388{ 389 struct vb2_queue *vq = vb->vb2_queue; 390 struct fimc_ctx *ctx = vq->drv_priv; 391 int i; 392 393 if (ctx->d_frame.fmt == NULL) 394 return -EINVAL; 395 396 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) { 397 unsigned long size = ctx->d_frame.payload[i]; 398 399 if (vb2_plane_size(vb, i) < size) { 400 v4l2_err(&ctx->fimc_dev->vid_cap.ve.vdev, 401 "User buffer too small (%ld < %ld)\n", 402 vb2_plane_size(vb, i), size); 403 return -EINVAL; 404 } 405 vb2_set_plane_payload(vb, i, size); 406 } 407 408 return 0; 409} 410 411static void buffer_queue(struct vb2_buffer *vb) 412{ 413 struct fimc_vid_buffer *buf 414 = container_of(vb, struct fimc_vid_buffer, vb); 415 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 416 struct fimc_dev *fimc = ctx->fimc_dev; 417 struct fimc_vid_cap *vid_cap = &fimc->vid_cap; 418 struct exynos_video_entity *ve = &vid_cap->ve; 419 unsigned long flags; 420 int min_bufs; 421 422 spin_lock_irqsave(&fimc->slock, flags); 423 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr); 424 425 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) && 426 !test_bit(ST_CAPT_STREAM, &fimc->state) && 427 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) { 428 /* Setup the buffer directly for processing. */ 429 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 : 430 vid_cap->buf_index; 431 432 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id); 433 buf->index = vid_cap->buf_index; 434 fimc_active_queue_add(vid_cap, buf); 435 436 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS) 437 vid_cap->buf_index = 0; 438 } else { 439 fimc_pending_queue_add(vid_cap, buf); 440 } 441 442 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1; 443 444 445 if (vb2_is_streaming(&vid_cap->vbq) && 446 vid_cap->active_buf_cnt >= min_bufs && 447 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) { 448 int ret; 449 450 fimc_activate_capture(ctx); 451 spin_unlock_irqrestore(&fimc->slock, flags); 452 453 if (test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state)) 454 return; 455 456 ret = fimc_pipeline_call(ve, set_stream, 1); 457 if (ret < 0) 458 v4l2_err(&ve->vdev, "stream on failed: %d\n", ret); 459 return; 460 } 461 spin_unlock_irqrestore(&fimc->slock, flags); 462} 463 464static struct vb2_ops fimc_capture_qops = { 465 .queue_setup = queue_setup, 466 .buf_prepare = buffer_prepare, 467 .buf_queue = buffer_queue, 468 .wait_prepare = vb2_ops_wait_prepare, 469 .wait_finish = vb2_ops_wait_finish, 470 .start_streaming = start_streaming, 471 .stop_streaming = stop_streaming, 472}; 473 474static int fimc_capture_set_default_format(struct fimc_dev *fimc); 475 476static int fimc_capture_open(struct file *file) 477{ 478 struct fimc_dev *fimc = video_drvdata(file); 479 struct fimc_vid_cap *vc = &fimc->vid_cap; 480 struct exynos_video_entity *ve = &vc->ve; 481 int ret = -EBUSY; 482 483 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state); 484 485 mutex_lock(&fimc->lock); 486 487 if (fimc_m2m_active(fimc)) 488 goto unlock; 489 490 set_bit(ST_CAPT_BUSY, &fimc->state); 491 ret = pm_runtime_get_sync(&fimc->pdev->dev); 492 if (ret < 0) 493 goto unlock; 494 495 ret = v4l2_fh_open(file); 496 if (ret) { 497 pm_runtime_put_sync(&fimc->pdev->dev); 498 goto unlock; 499 } 500 501 if (v4l2_fh_is_singular_file(file)) { 502 fimc_md_graph_lock(ve); 503 504 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true); 505 506 if (ret == 0 && vc->user_subdev_api && vc->inh_sensor_ctrls) { 507 /* 508 * Recreate controls of the the video node to drop 509 * any controls inherited from the sensor subdev. 510 */ 511 fimc_ctrls_delete(vc->ctx); 512 513 ret = fimc_ctrls_create(vc->ctx); 514 if (ret == 0) 515 vc->inh_sensor_ctrls = false; 516 } 517 if (ret == 0) 518 ve->vdev.entity.use_count++; 519 520 fimc_md_graph_unlock(ve); 521 522 if (ret == 0) 523 ret = fimc_capture_set_default_format(fimc); 524 525 if (ret < 0) { 526 clear_bit(ST_CAPT_BUSY, &fimc->state); 527 pm_runtime_put_sync(&fimc->pdev->dev); 528 v4l2_fh_release(file); 529 } 530 } 531unlock: 532 mutex_unlock(&fimc->lock); 533 return ret; 534} 535 536static int fimc_capture_release(struct file *file) 537{ 538 struct fimc_dev *fimc = video_drvdata(file); 539 struct fimc_vid_cap *vc = &fimc->vid_cap; 540 bool close = v4l2_fh_is_singular_file(file); 541 int ret; 542 543 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state); 544 545 mutex_lock(&fimc->lock); 546 547 if (close && vc->streaming) { 548 media_entity_pipeline_stop(&vc->ve.vdev.entity); 549 vc->streaming = false; 550 } 551 552 ret = _vb2_fop_release(file, NULL); 553 554 if (close) { 555 clear_bit(ST_CAPT_BUSY, &fimc->state); 556 fimc_pipeline_call(&vc->ve, close); 557 clear_bit(ST_CAPT_SUSPENDED, &fimc->state); 558 559 fimc_md_graph_lock(&vc->ve); 560 vc->ve.vdev.entity.use_count--; 561 fimc_md_graph_unlock(&vc->ve); 562 } 563 564 pm_runtime_put_sync(&fimc->pdev->dev); 565 mutex_unlock(&fimc->lock); 566 567 return ret; 568} 569 570static const struct v4l2_file_operations fimc_capture_fops = { 571 .owner = THIS_MODULE, 572 .open = fimc_capture_open, 573 .release = fimc_capture_release, 574 .poll = vb2_fop_poll, 575 .unlocked_ioctl = video_ioctl2, 576 .mmap = vb2_fop_mmap, 577}; 578 579/* 580 * Format and crop negotiation helpers 581 */ 582 583static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx, 584 u32 *width, u32 *height, 585 u32 *code, u32 *fourcc, int pad) 586{ 587 bool rotation = ctx->rotation == 90 || ctx->rotation == 270; 588 struct fimc_dev *fimc = ctx->fimc_dev; 589 const struct fimc_variant *var = fimc->variant; 590 const struct fimc_pix_limit *pl = var->pix_limit; 591 struct fimc_frame *dst = &ctx->d_frame; 592 u32 depth, min_w, max_w, min_h, align_h = 3; 593 u32 mask = FMT_FLAGS_CAM; 594 struct fimc_fmt *ffmt; 595 596 /* Conversion from/to JPEG or User Defined format is not supported */ 597 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE && 598 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color)) 599 *code = ctx->s_frame.fmt->mbus_code; 600 601 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE) 602 mask |= FMT_FLAGS_M2M; 603 604 if (pad == FIMC_SD_PAD_SINK_FIFO) 605 mask = FMT_FLAGS_WRITEBACK; 606 607 ffmt = fimc_find_format(fourcc, code, mask, 0); 608 if (WARN_ON(!ffmt)) 609 return NULL; 610 611 if (code) 612 *code = ffmt->mbus_code; 613 if (fourcc) 614 *fourcc = ffmt->fourcc; 615 616 if (pad != FIMC_SD_PAD_SOURCE) { 617 max_w = fimc_fmt_is_user_defined(ffmt->color) ? 618 pl->scaler_dis_w : pl->scaler_en_w; 619 /* Apply the camera input interface pixel constraints */ 620 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4, 621 height, max_t(u32, *height, 32), 622 FIMC_CAMIF_MAX_HEIGHT, 623 fimc_fmt_is_user_defined(ffmt->color) ? 624 3 : 1, 625 0); 626 return ffmt; 627 } 628 /* Can't scale or crop in transparent (JPEG) transfer mode */ 629 if (fimc_fmt_is_user_defined(ffmt->color)) { 630 *width = ctx->s_frame.f_width; 631 *height = ctx->s_frame.f_height; 632 return ffmt; 633 } 634 /* Apply the scaler and the output DMA constraints */ 635 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w; 636 if (ctx->state & FIMC_COMPOSE) { 637 min_w = dst->offs_h + dst->width; 638 min_h = dst->offs_v + dst->height; 639 } else { 640 min_w = var->min_out_pixsize; 641 min_h = var->min_out_pixsize; 642 } 643 if (var->min_vsize_align == 1 && !rotation) 644 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1; 645 646 depth = fimc_get_format_depth(ffmt); 647 v4l_bound_align_image(width, min_w, max_w, 648 ffs(var->min_out_pixsize) - 1, 649 height, min_h, FIMC_CAMIF_MAX_HEIGHT, 650 align_h, 651 64/(ALIGN(depth, 8))); 652 653 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d", 654 pad, code ? *code : 0, *width, *height, 655 dst->f_width, dst->f_height); 656 657 return ffmt; 658} 659 660static void fimc_capture_try_selection(struct fimc_ctx *ctx, 661 struct v4l2_rect *r, 662 int target) 663{ 664 bool rotate = ctx->rotation == 90 || ctx->rotation == 270; 665 struct fimc_dev *fimc = ctx->fimc_dev; 666 const struct fimc_variant *var = fimc->variant; 667 const struct fimc_pix_limit *pl = var->pix_limit; 668 struct fimc_frame *sink = &ctx->s_frame; 669 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz; 670 u32 align_sz = 0, align_h = 4; 671 u32 max_sc_h, max_sc_v; 672 673 /* In JPEG transparent transfer mode cropping is not supported */ 674 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) { 675 r->width = sink->f_width; 676 r->height = sink->f_height; 677 r->left = r->top = 0; 678 return; 679 } 680 if (target == V4L2_SEL_TGT_COMPOSE) { 681 if (ctx->rotation != 90 && ctx->rotation != 270) 682 align_h = 1; 683 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3)); 684 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1)); 685 min_sz = var->min_out_pixsize; 686 } else { 687 u32 depth = fimc_get_format_depth(sink->fmt); 688 align_sz = 64/ALIGN(depth, 8); 689 min_sz = var->min_inp_pixsize; 690 min_w = min_h = min_sz; 691 max_sc_h = max_sc_v = 1; 692 } 693 /* 694 * For the compose rectangle the following constraints must be met: 695 * - it must fit in the sink pad format rectangle (f_width/f_height); 696 * - maximum downscaling ratio is 64; 697 * - maximum crop size depends if the rotator is used or not; 698 * - the sink pad format width/height must be 4 multiple of the 699 * prescaler ratios determined by sink pad size and source pad crop, 700 * the prescaler ratio is returned by fimc_get_scaler_factor(). 701 */ 702 max_w = min_t(u32, 703 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w, 704 rotate ? sink->f_height : sink->f_width); 705 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height); 706 707 if (target == V4L2_SEL_TGT_COMPOSE) { 708 min_w = min_t(u32, max_w, sink->f_width / max_sc_h); 709 min_h = min_t(u32, max_h, sink->f_height / max_sc_v); 710 if (rotate) { 711 swap(max_sc_h, max_sc_v); 712 swap(min_w, min_h); 713 } 714 } 715 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1, 716 &r->height, min_h, max_h, align_h, 717 align_sz); 718 /* Adjust left/top if crop/compose rectangle is out of bounds */ 719 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width); 720 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height); 721 r->left = round_down(r->left, var->hor_offs_align); 722 723 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d", 724 target, r->left, r->top, r->width, r->height, 725 sink->f_width, sink->f_height); 726} 727 728/* 729 * The video node ioctl operations 730 */ 731static int fimc_cap_querycap(struct file *file, void *priv, 732 struct v4l2_capability *cap) 733{ 734 struct fimc_dev *fimc = video_drvdata(file); 735 736 __fimc_vidioc_querycap(&fimc->pdev->dev, cap, V4L2_CAP_STREAMING | 737 V4L2_CAP_VIDEO_CAPTURE_MPLANE); 738 return 0; 739} 740 741static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv, 742 struct v4l2_fmtdesc *f) 743{ 744 struct fimc_fmt *fmt; 745 746 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M, 747 f->index); 748 if (!fmt) 749 return -EINVAL; 750 strncpy(f->description, fmt->name, sizeof(f->description) - 1); 751 f->pixelformat = fmt->fourcc; 752 if (fmt->fourcc == MEDIA_BUS_FMT_JPEG_1X8) 753 f->flags |= V4L2_FMT_FLAG_COMPRESSED; 754 return 0; 755} 756 757static struct media_entity *fimc_pipeline_get_head(struct media_entity *me) 758{ 759 struct media_pad *pad = &me->pads[0]; 760 761 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) { 762 pad = media_entity_remote_pad(pad); 763 if (!pad) 764 break; 765 me = pad->entity; 766 pad = &me->pads[0]; 767 } 768 769 return me; 770} 771 772/** 773 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline 774 * elements 775 * @ctx: FIMC capture context 776 * @tfmt: media bus format to try/set on subdevs 777 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output) 778 * @set: true to set format on subdevs, false to try only 779 */ 780static int fimc_pipeline_try_format(struct fimc_ctx *ctx, 781 struct v4l2_mbus_framefmt *tfmt, 782 struct fimc_fmt **fmt_id, 783 bool set) 784{ 785 struct fimc_dev *fimc = ctx->fimc_dev; 786 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe); 787 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR]; 788 struct v4l2_subdev_format sfmt; 789 struct v4l2_mbus_framefmt *mf = &sfmt.format; 790 struct media_entity *me; 791 struct fimc_fmt *ffmt; 792 struct media_pad *pad; 793 int ret, i = 1; 794 u32 fcc; 795 796 if (WARN_ON(!sd || !tfmt)) 797 return -EINVAL; 798 799 memset(&sfmt, 0, sizeof(sfmt)); 800 sfmt.format = *tfmt; 801 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY; 802 803 me = fimc_pipeline_get_head(&sd->entity); 804 805 while (1) { 806 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL, 807 FMT_FLAGS_CAM, i++); 808 if (ffmt == NULL) { 809 /* 810 * Notify user-space if common pixel code for 811 * host and sensor does not exist. 812 */ 813 return -EINVAL; 814 } 815 mf->code = tfmt->code = ffmt->mbus_code; 816 817 /* set format on all pipeline subdevs */ 818 while (me != &fimc->vid_cap.subdev.entity) { 819 sd = media_entity_to_v4l2_subdev(me); 820 821 sfmt.pad = 0; 822 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt); 823 if (ret) 824 return ret; 825 826 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) { 827 sfmt.pad = me->num_pads - 1; 828 mf->code = tfmt->code; 829 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, 830 &sfmt); 831 if (ret) 832 return ret; 833 } 834 835 pad = media_entity_remote_pad(&me->pads[sfmt.pad]); 836 if (!pad) 837 return -EINVAL; 838 me = pad->entity; 839 } 840 841 if (mf->code != tfmt->code) 842 continue; 843 844 fcc = ffmt->fourcc; 845 tfmt->width = mf->width; 846 tfmt->height = mf->height; 847 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height, 848 NULL, &fcc, FIMC_SD_PAD_SINK_CAM); 849 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height, 850 NULL, &fcc, FIMC_SD_PAD_SOURCE); 851 if (ffmt && ffmt->mbus_code) 852 mf->code = ffmt->mbus_code; 853 if (mf->width != tfmt->width || mf->height != tfmt->height) 854 continue; 855 tfmt->code = mf->code; 856 break; 857 } 858 859 if (fmt_id && ffmt) 860 *fmt_id = ffmt; 861 *tfmt = *mf; 862 863 return 0; 864} 865 866/** 867 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters 868 * @sensor: pointer to the sensor subdev 869 * @plane_fmt: provides plane sizes corresponding to the frame layout entries 870 * @try: true to set the frame parameters, false to query only 871 * 872 * This function is used by this driver only for compressed/blob data formats. 873 */ 874static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor, 875 struct v4l2_plane_pix_format *plane_fmt, 876 unsigned int num_planes, bool try) 877{ 878 struct v4l2_mbus_frame_desc fd; 879 int i, ret; 880 int pad; 881 882 for (i = 0; i < num_planes; i++) 883 fd.entry[i].length = plane_fmt[i].sizeimage; 884 885 pad = sensor->entity.num_pads - 1; 886 if (try) 887 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd); 888 else 889 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd); 890 891 if (ret < 0) 892 return ret; 893 894 if (num_planes != fd.num_entries) 895 return -EINVAL; 896 897 for (i = 0; i < num_planes; i++) 898 plane_fmt[i].sizeimage = fd.entry[i].length; 899 900 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) { 901 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n", 902 fd.entry[0].length); 903 904 return -EINVAL; 905 } 906 907 return 0; 908} 909 910static int fimc_cap_g_fmt_mplane(struct file *file, void *fh, 911 struct v4l2_format *f) 912{ 913 struct fimc_dev *fimc = video_drvdata(file); 914 915 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f); 916 return 0; 917} 918 919/* 920 * Try or set format on the fimc.X.capture video node and additionally 921 * on the whole pipeline if @try is false. 922 * Locking: the caller must _not_ hold the graph mutex. 923 */ 924static int __video_try_or_set_format(struct fimc_dev *fimc, 925 struct v4l2_format *f, bool try, 926 struct fimc_fmt **inp_fmt, 927 struct fimc_fmt **out_fmt) 928{ 929 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; 930 struct fimc_vid_cap *vc = &fimc->vid_cap; 931 struct exynos_video_entity *ve = &vc->ve; 932 struct fimc_ctx *ctx = vc->ctx; 933 unsigned int width = 0, height = 0; 934 int ret = 0; 935 936 /* Pre-configure format at the camera input interface, for JPEG only */ 937 if (fimc_jpeg_fourcc(pix->pixelformat)) { 938 fimc_capture_try_format(ctx, &pix->width, &pix->height, 939 NULL, &pix->pixelformat, 940 FIMC_SD_PAD_SINK_CAM); 941 if (try) { 942 width = pix->width; 943 height = pix->height; 944 } else { 945 ctx->s_frame.f_width = pix->width; 946 ctx->s_frame.f_height = pix->height; 947 } 948 } 949 950 /* Try the format at the scaler and the DMA output */ 951 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height, 952 NULL, &pix->pixelformat, 953 FIMC_SD_PAD_SOURCE); 954 if (*out_fmt == NULL) 955 return -EINVAL; 956 957 /* Restore image width/height for JPEG (no resizing supported). */ 958 if (try && fimc_jpeg_fourcc(pix->pixelformat)) { 959 pix->width = width; 960 pix->height = height; 961 } 962 963 /* Try to match format at the host and the sensor */ 964 if (!vc->user_subdev_api) { 965 struct v4l2_mbus_framefmt mbus_fmt; 966 struct v4l2_mbus_framefmt *mf; 967 968 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt; 969 970 mf->code = (*out_fmt)->mbus_code; 971 mf->width = pix->width; 972 mf->height = pix->height; 973 974 fimc_md_graph_lock(ve); 975 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try); 976 fimc_md_graph_unlock(ve); 977 978 if (ret < 0) 979 return ret; 980 981 pix->width = mf->width; 982 pix->height = mf->height; 983 } 984 985 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix); 986 987 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) { 988 struct v4l2_subdev *sensor; 989 990 fimc_md_graph_lock(ve); 991 992 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR); 993 if (sensor) 994 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt, 995 (*out_fmt)->memplanes, try); 996 else 997 ret = -EPIPE; 998 999 fimc_md_graph_unlock(ve); 1000 } 1001 1002 return ret; 1003} 1004 1005static int fimc_cap_try_fmt_mplane(struct file *file, void *fh, 1006 struct v4l2_format *f) 1007{ 1008 struct fimc_dev *fimc = video_drvdata(file); 1009 struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL; 1010 1011 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt); 1012} 1013 1014static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, 1015 enum fimc_color_fmt color) 1016{ 1017 bool jpeg = fimc_fmt_is_user_defined(color); 1018 1019 ctx->scaler.enabled = !jpeg; 1020 fimc_ctrls_activate(ctx, !jpeg); 1021 1022 if (jpeg) 1023 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state); 1024 else 1025 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state); 1026} 1027 1028static int __fimc_capture_set_format(struct fimc_dev *fimc, 1029 struct v4l2_format *f) 1030{ 1031 struct fimc_vid_cap *vc = &fimc->vid_cap; 1032 struct fimc_ctx *ctx = vc->ctx; 1033 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; 1034 struct fimc_frame *ff = &ctx->d_frame; 1035 struct fimc_fmt *inp_fmt = NULL; 1036 int ret, i; 1037 1038 if (vb2_is_busy(&fimc->vid_cap.vbq)) 1039 return -EBUSY; 1040 1041 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt); 1042 if (ret < 0) 1043 return ret; 1044 1045 /* Update RGB Alpha control state and value range */ 1046 fimc_alpha_ctrl_update(ctx); 1047 1048 for (i = 0; i < ff->fmt->memplanes; i++) { 1049 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline; 1050 ff->payload[i] = pix->plane_fmt[i].sizeimage; 1051 } 1052 1053 set_frame_bounds(ff, pix->width, pix->height); 1054 /* Reset the composition rectangle if not yet configured */ 1055 if (!(ctx->state & FIMC_COMPOSE)) 1056 set_frame_crop(ff, 0, 0, pix->width, pix->height); 1057 1058 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color); 1059 1060 /* Reset cropping and set format at the camera interface input */ 1061 if (!vc->user_subdev_api) { 1062 ctx->s_frame.fmt = inp_fmt; 1063 set_frame_bounds(&ctx->s_frame, pix->width, pix->height); 1064 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height); 1065 } 1066 1067 return ret; 1068} 1069 1070static int fimc_cap_s_fmt_mplane(struct file *file, void *priv, 1071 struct v4l2_format *f) 1072{ 1073 struct fimc_dev *fimc = video_drvdata(file); 1074 1075 return __fimc_capture_set_format(fimc, f); 1076} 1077 1078static int fimc_cap_enum_input(struct file *file, void *priv, 1079 struct v4l2_input *i) 1080{ 1081 struct fimc_dev *fimc = video_drvdata(file); 1082 struct exynos_video_entity *ve = &fimc->vid_cap.ve; 1083 struct v4l2_subdev *sd; 1084 1085 if (i->index != 0) 1086 return -EINVAL; 1087 1088 i->type = V4L2_INPUT_TYPE_CAMERA; 1089 fimc_md_graph_lock(ve); 1090 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR); 1091 fimc_md_graph_unlock(ve); 1092 1093 if (sd) 1094 strlcpy(i->name, sd->name, sizeof(i->name)); 1095 1096 return 0; 1097} 1098 1099static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i) 1100{ 1101 return i == 0 ? i : -EINVAL; 1102} 1103 1104static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i) 1105{ 1106 *i = 0; 1107 return 0; 1108} 1109 1110/** 1111 * fimc_pipeline_validate - check for formats inconsistencies 1112 * between source and sink pad of each link 1113 * 1114 * Return 0 if all formats match or -EPIPE otherwise. 1115 */ 1116static int fimc_pipeline_validate(struct fimc_dev *fimc) 1117{ 1118 struct v4l2_subdev_format sink_fmt, src_fmt; 1119 struct fimc_vid_cap *vc = &fimc->vid_cap; 1120 struct v4l2_subdev *sd = &vc->subdev; 1121 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe); 1122 struct media_pad *sink_pad, *src_pad; 1123 int i, ret; 1124 1125 while (1) { 1126 /* 1127 * Find current entity sink pad and any remote sink pad linked 1128 * to it. We stop if there is no sink pad in current entity or 1129 * it is not linked to any other remote entity. 1130 */ 1131 src_pad = NULL; 1132 1133 for (i = 0; i < sd->entity.num_pads; i++) { 1134 struct media_pad *p = &sd->entity.pads[i]; 1135 1136 if (p->flags & MEDIA_PAD_FL_SINK) { 1137 sink_pad = p; 1138 src_pad = media_entity_remote_pad(sink_pad); 1139 if (src_pad) 1140 break; 1141 } 1142 } 1143 1144 if (src_pad == NULL || 1145 media_entity_type(src_pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) 1146 break; 1147 1148 /* Don't call FIMC subdev operation to avoid nested locking */ 1149 if (sd == &vc->subdev) { 1150 struct fimc_frame *ff = &vc->ctx->s_frame; 1151 sink_fmt.format.width = ff->f_width; 1152 sink_fmt.format.height = ff->f_height; 1153 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0; 1154 } else { 1155 sink_fmt.pad = sink_pad->index; 1156 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; 1157 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); 1158 if (ret < 0 && ret != -ENOIOCTLCMD) 1159 return -EPIPE; 1160 } 1161 1162 /* Retrieve format at the source pad */ 1163 sd = media_entity_to_v4l2_subdev(src_pad->entity); 1164 src_fmt.pad = src_pad->index; 1165 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; 1166 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); 1167 if (ret < 0 && ret != -ENOIOCTLCMD) 1168 return -EPIPE; 1169 1170 if (src_fmt.format.width != sink_fmt.format.width || 1171 src_fmt.format.height != sink_fmt.format.height || 1172 src_fmt.format.code != sink_fmt.format.code) 1173 return -EPIPE; 1174 1175 if (sd == p->subdevs[IDX_SENSOR] && 1176 fimc_user_defined_mbus_fmt(src_fmt.format.code)) { 1177 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES]; 1178 struct fimc_frame *frame = &vc->ctx->d_frame; 1179 unsigned int i; 1180 1181 ret = fimc_get_sensor_frame_desc(sd, plane_fmt, 1182 frame->fmt->memplanes, 1183 false); 1184 if (ret < 0) 1185 return -EPIPE; 1186 1187 for (i = 0; i < frame->fmt->memplanes; i++) 1188 if (frame->payload[i] < plane_fmt[i].sizeimage) 1189 return -EPIPE; 1190 } 1191 } 1192 return 0; 1193} 1194 1195static int fimc_cap_streamon(struct file *file, void *priv, 1196 enum v4l2_buf_type type) 1197{ 1198 struct fimc_dev *fimc = video_drvdata(file); 1199 struct fimc_vid_cap *vc = &fimc->vid_cap; 1200 struct media_entity *entity = &vc->ve.vdev.entity; 1201 struct fimc_source_info *si = NULL; 1202 struct v4l2_subdev *sd; 1203 int ret; 1204 1205 if (fimc_capture_active(fimc)) 1206 return -EBUSY; 1207 1208 ret = media_entity_pipeline_start(entity, &vc->ve.pipe->mp); 1209 if (ret < 0) 1210 return ret; 1211 1212 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR); 1213 if (sd) 1214 si = v4l2_get_subdev_hostdata(sd); 1215 1216 if (si == NULL) { 1217 ret = -EPIPE; 1218 goto err_p_stop; 1219 } 1220 /* 1221 * Save configuration data related to currently attached image 1222 * sensor or other data source, e.g. FIMC-IS. 1223 */ 1224 vc->source_config = *si; 1225 1226 if (vc->input == GRP_ID_FIMC_IS) 1227 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK; 1228 1229 if (vc->user_subdev_api) { 1230 ret = fimc_pipeline_validate(fimc); 1231 if (ret < 0) 1232 goto err_p_stop; 1233 } 1234 1235 ret = vb2_ioctl_streamon(file, priv, type); 1236 if (!ret) { 1237 vc->streaming = true; 1238 return ret; 1239 } 1240 1241err_p_stop: 1242 media_entity_pipeline_stop(entity); 1243 return ret; 1244} 1245 1246static int fimc_cap_streamoff(struct file *file, void *priv, 1247 enum v4l2_buf_type type) 1248{ 1249 struct fimc_dev *fimc = video_drvdata(file); 1250 struct fimc_vid_cap *vc = &fimc->vid_cap; 1251 int ret; 1252 1253 ret = vb2_ioctl_streamoff(file, priv, type); 1254 if (ret < 0) 1255 return ret; 1256 1257 media_entity_pipeline_stop(&vc->ve.vdev.entity); 1258 vc->streaming = false; 1259 return 0; 1260} 1261 1262static int fimc_cap_reqbufs(struct file *file, void *priv, 1263 struct v4l2_requestbuffers *reqbufs) 1264{ 1265 struct fimc_dev *fimc = video_drvdata(file); 1266 int ret; 1267 1268 ret = vb2_ioctl_reqbufs(file, priv, reqbufs); 1269 1270 if (!ret) 1271 fimc->vid_cap.reqbufs_count = reqbufs->count; 1272 1273 return ret; 1274} 1275 1276static int fimc_cap_g_selection(struct file *file, void *fh, 1277 struct v4l2_selection *s) 1278{ 1279 struct fimc_dev *fimc = video_drvdata(file); 1280 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1281 struct fimc_frame *f = &ctx->s_frame; 1282 1283 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 1284 return -EINVAL; 1285 1286 switch (s->target) { 1287 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 1288 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 1289 f = &ctx->d_frame; 1290 case V4L2_SEL_TGT_CROP_BOUNDS: 1291 case V4L2_SEL_TGT_CROP_DEFAULT: 1292 s->r.left = 0; 1293 s->r.top = 0; 1294 s->r.width = f->o_width; 1295 s->r.height = f->o_height; 1296 return 0; 1297 1298 case V4L2_SEL_TGT_COMPOSE: 1299 f = &ctx->d_frame; 1300 case V4L2_SEL_TGT_CROP: 1301 s->r.left = f->offs_h; 1302 s->r.top = f->offs_v; 1303 s->r.width = f->width; 1304 s->r.height = f->height; 1305 return 0; 1306 } 1307 1308 return -EINVAL; 1309} 1310 1311/* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */ 1312static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) 1313{ 1314 if (a->left < b->left || a->top < b->top) 1315 return 0; 1316 if (a->left + a->width > b->left + b->width) 1317 return 0; 1318 if (a->top + a->height > b->top + b->height) 1319 return 0; 1320 1321 return 1; 1322} 1323 1324static int fimc_cap_s_selection(struct file *file, void *fh, 1325 struct v4l2_selection *s) 1326{ 1327 struct fimc_dev *fimc = video_drvdata(file); 1328 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1329 struct v4l2_rect rect = s->r; 1330 struct fimc_frame *f; 1331 unsigned long flags; 1332 1333 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 1334 return -EINVAL; 1335 1336 if (s->target == V4L2_SEL_TGT_COMPOSE) 1337 f = &ctx->d_frame; 1338 else if (s->target == V4L2_SEL_TGT_CROP) 1339 f = &ctx->s_frame; 1340 else 1341 return -EINVAL; 1342 1343 fimc_capture_try_selection(ctx, &rect, s->target); 1344 1345 if (s->flags & V4L2_SEL_FLAG_LE && 1346 !enclosed_rectangle(&rect, &s->r)) 1347 return -ERANGE; 1348 1349 if (s->flags & V4L2_SEL_FLAG_GE && 1350 !enclosed_rectangle(&s->r, &rect)) 1351 return -ERANGE; 1352 1353 s->r = rect; 1354 spin_lock_irqsave(&fimc->slock, flags); 1355 set_frame_crop(f, s->r.left, s->r.top, s->r.width, 1356 s->r.height); 1357 spin_unlock_irqrestore(&fimc->slock, flags); 1358 1359 set_bit(ST_CAPT_APPLY_CFG, &fimc->state); 1360 return 0; 1361} 1362 1363static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = { 1364 .vidioc_querycap = fimc_cap_querycap, 1365 1366 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane, 1367 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane, 1368 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane, 1369 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane, 1370 1371 .vidioc_reqbufs = fimc_cap_reqbufs, 1372 .vidioc_querybuf = vb2_ioctl_querybuf, 1373 .vidioc_qbuf = vb2_ioctl_qbuf, 1374 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1375 .vidioc_expbuf = vb2_ioctl_expbuf, 1376 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1377 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1378 1379 .vidioc_streamon = fimc_cap_streamon, 1380 .vidioc_streamoff = fimc_cap_streamoff, 1381 1382 .vidioc_g_selection = fimc_cap_g_selection, 1383 .vidioc_s_selection = fimc_cap_s_selection, 1384 1385 .vidioc_enum_input = fimc_cap_enum_input, 1386 .vidioc_s_input = fimc_cap_s_input, 1387 .vidioc_g_input = fimc_cap_g_input, 1388}; 1389 1390/* Capture subdev media entity operations */ 1391static int fimc_link_setup(struct media_entity *entity, 1392 const struct media_pad *local, 1393 const struct media_pad *remote, u32 flags) 1394{ 1395 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); 1396 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1397 struct fimc_vid_cap *vc = &fimc->vid_cap; 1398 struct v4l2_subdev *sensor; 1399 1400 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) 1401 return -EINVAL; 1402 1403 if (WARN_ON(fimc == NULL)) 1404 return 0; 1405 1406 dbg("%s --> %s, flags: 0x%x. input: 0x%x", 1407 local->entity->name, remote->entity->name, flags, 1408 fimc->vid_cap.input); 1409 1410 if (!(flags & MEDIA_LNK_FL_ENABLED)) { 1411 fimc->vid_cap.input = 0; 1412 return 0; 1413 } 1414 1415 if (vc->input != 0) 1416 return -EBUSY; 1417 1418 vc->input = sd->grp_id; 1419 1420 if (vc->user_subdev_api || vc->inh_sensor_ctrls) 1421 return 0; 1422 1423 /* Inherit V4L2 controls from the image sensor subdev. */ 1424 sensor = fimc_find_remote_sensor(&vc->subdev.entity); 1425 if (sensor == NULL) 1426 return 0; 1427 1428 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler, 1429 sensor->ctrl_handler, NULL); 1430} 1431 1432static const struct media_entity_operations fimc_sd_media_ops = { 1433 .link_setup = fimc_link_setup, 1434}; 1435 1436/** 1437 * fimc_sensor_notify - v4l2_device notification from a sensor subdev 1438 * @sd: pointer to a subdev generating the notification 1439 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY 1440 * @arg: pointer to an u32 type integer that stores the frame payload value 1441 * 1442 * The End Of Frame notification sent by sensor subdev in its still capture 1443 * mode. If there is only a single VSYNC generated by the sensor at the 1444 * beginning of a frame transmission, FIMC does not issue the LastIrq 1445 * (end of frame) interrupt. And this notification is used to complete the 1446 * frame capture and returning a buffer to user-space. Subdev drivers should 1447 * call this notification from their last 'End of frame capture' interrupt. 1448 */ 1449void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification, 1450 void *arg) 1451{ 1452 struct fimc_source_info *si; 1453 struct fimc_vid_buffer *buf; 1454 struct fimc_md *fmd; 1455 struct fimc_dev *fimc; 1456 unsigned long flags; 1457 1458 if (sd == NULL) 1459 return; 1460 1461 si = v4l2_get_subdev_hostdata(sd); 1462 fmd = entity_to_fimc_mdev(&sd->entity); 1463 1464 spin_lock_irqsave(&fmd->slock, flags); 1465 1466 fimc = si ? source_to_sensor_info(si)->host : NULL; 1467 1468 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY && 1469 test_bit(ST_CAPT_PEND, &fimc->state)) { 1470 unsigned long irq_flags; 1471 spin_lock_irqsave(&fimc->slock, irq_flags); 1472 if (!list_empty(&fimc->vid_cap.active_buf_q)) { 1473 buf = list_entry(fimc->vid_cap.active_buf_q.next, 1474 struct fimc_vid_buffer, list); 1475 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg)); 1476 } 1477 fimc_capture_irq_handler(fimc, 1); 1478 fimc_deactivate_capture(fimc); 1479 spin_unlock_irqrestore(&fimc->slock, irq_flags); 1480 } 1481 spin_unlock_irqrestore(&fmd->slock, flags); 1482} 1483 1484static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd, 1485 struct v4l2_subdev_pad_config *cfg, 1486 struct v4l2_subdev_mbus_code_enum *code) 1487{ 1488 struct fimc_fmt *fmt; 1489 1490 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index); 1491 if (!fmt) 1492 return -EINVAL; 1493 code->code = fmt->mbus_code; 1494 return 0; 1495} 1496 1497static int fimc_subdev_get_fmt(struct v4l2_subdev *sd, 1498 struct v4l2_subdev_pad_config *cfg, 1499 struct v4l2_subdev_format *fmt) 1500{ 1501 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1502 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1503 struct fimc_frame *ff = &ctx->s_frame; 1504 struct v4l2_mbus_framefmt *mf; 1505 1506 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1507 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); 1508 fmt->format = *mf; 1509 return 0; 1510 } 1511 1512 mf = &fmt->format; 1513 mutex_lock(&fimc->lock); 1514 1515 switch (fmt->pad) { 1516 case FIMC_SD_PAD_SOURCE: 1517 if (!WARN_ON(ff->fmt == NULL)) 1518 mf->code = ff->fmt->mbus_code; 1519 /* Sink pads crop rectangle size */ 1520 mf->width = ff->width; 1521 mf->height = ff->height; 1522 break; 1523 case FIMC_SD_PAD_SINK_FIFO: 1524 *mf = fimc->vid_cap.wb_fmt; 1525 break; 1526 case FIMC_SD_PAD_SINK_CAM: 1527 default: 1528 *mf = fimc->vid_cap.ci_fmt; 1529 break; 1530 } 1531 1532 mutex_unlock(&fimc->lock); 1533 mf->colorspace = V4L2_COLORSPACE_JPEG; 1534 1535 return 0; 1536} 1537 1538static int fimc_subdev_set_fmt(struct v4l2_subdev *sd, 1539 struct v4l2_subdev_pad_config *cfg, 1540 struct v4l2_subdev_format *fmt) 1541{ 1542 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1543 struct v4l2_mbus_framefmt *mf = &fmt->format; 1544 struct fimc_vid_cap *vc = &fimc->vid_cap; 1545 struct fimc_ctx *ctx = vc->ctx; 1546 struct fimc_frame *ff; 1547 struct fimc_fmt *ffmt; 1548 1549 dbg("pad%d: code: 0x%x, %dx%d", 1550 fmt->pad, mf->code, mf->width, mf->height); 1551 1552 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq)) 1553 return -EBUSY; 1554 1555 mutex_lock(&fimc->lock); 1556 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height, 1557 &mf->code, NULL, fmt->pad); 1558 mutex_unlock(&fimc->lock); 1559 mf->colorspace = V4L2_COLORSPACE_JPEG; 1560 1561 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1562 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); 1563 *mf = fmt->format; 1564 return 0; 1565 } 1566 /* There must be a bug in the driver if this happens */ 1567 if (WARN_ON(ffmt == NULL)) 1568 return -EINVAL; 1569 1570 /* Update RGB Alpha control state and value range */ 1571 fimc_alpha_ctrl_update(ctx); 1572 1573 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color); 1574 if (fmt->pad == FIMC_SD_PAD_SOURCE) { 1575 ff = &ctx->d_frame; 1576 /* Sink pads crop rectangle size */ 1577 mf->width = ctx->s_frame.width; 1578 mf->height = ctx->s_frame.height; 1579 } else { 1580 ff = &ctx->s_frame; 1581 } 1582 1583 mutex_lock(&fimc->lock); 1584 set_frame_bounds(ff, mf->width, mf->height); 1585 1586 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO) 1587 vc->wb_fmt = *mf; 1588 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM) 1589 vc->ci_fmt = *mf; 1590 1591 ff->fmt = ffmt; 1592 1593 /* Reset the crop rectangle if required. */ 1594 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE))) 1595 set_frame_crop(ff, 0, 0, mf->width, mf->height); 1596 1597 if (fmt->pad != FIMC_SD_PAD_SOURCE) 1598 ctx->state &= ~FIMC_COMPOSE; 1599 1600 mutex_unlock(&fimc->lock); 1601 return 0; 1602} 1603 1604static int fimc_subdev_get_selection(struct v4l2_subdev *sd, 1605 struct v4l2_subdev_pad_config *cfg, 1606 struct v4l2_subdev_selection *sel) 1607{ 1608 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1609 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1610 struct fimc_frame *f = &ctx->s_frame; 1611 struct v4l2_rect *r = &sel->r; 1612 struct v4l2_rect *try_sel; 1613 1614 if (sel->pad == FIMC_SD_PAD_SOURCE) 1615 return -EINVAL; 1616 1617 mutex_lock(&fimc->lock); 1618 1619 switch (sel->target) { 1620 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 1621 f = &ctx->d_frame; 1622 case V4L2_SEL_TGT_CROP_BOUNDS: 1623 r->width = f->o_width; 1624 r->height = f->o_height; 1625 r->left = 0; 1626 r->top = 0; 1627 mutex_unlock(&fimc->lock); 1628 return 0; 1629 1630 case V4L2_SEL_TGT_CROP: 1631 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad); 1632 break; 1633 case V4L2_SEL_TGT_COMPOSE: 1634 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad); 1635 f = &ctx->d_frame; 1636 break; 1637 default: 1638 mutex_unlock(&fimc->lock); 1639 return -EINVAL; 1640 } 1641 1642 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { 1643 sel->r = *try_sel; 1644 } else { 1645 r->left = f->offs_h; 1646 r->top = f->offs_v; 1647 r->width = f->width; 1648 r->height = f->height; 1649 } 1650 1651 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d", 1652 sel->pad, r->left, r->top, r->width, r->height, 1653 f->f_width, f->f_height); 1654 1655 mutex_unlock(&fimc->lock); 1656 return 0; 1657} 1658 1659static int fimc_subdev_set_selection(struct v4l2_subdev *sd, 1660 struct v4l2_subdev_pad_config *cfg, 1661 struct v4l2_subdev_selection *sel) 1662{ 1663 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1664 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1665 struct fimc_frame *f = &ctx->s_frame; 1666 struct v4l2_rect *r = &sel->r; 1667 struct v4l2_rect *try_sel; 1668 unsigned long flags; 1669 1670 if (sel->pad == FIMC_SD_PAD_SOURCE) 1671 return -EINVAL; 1672 1673 mutex_lock(&fimc->lock); 1674 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP); 1675 1676 switch (sel->target) { 1677 case V4L2_SEL_TGT_CROP: 1678 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad); 1679 break; 1680 case V4L2_SEL_TGT_COMPOSE: 1681 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad); 1682 f = &ctx->d_frame; 1683 break; 1684 default: 1685 mutex_unlock(&fimc->lock); 1686 return -EINVAL; 1687 } 1688 1689 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { 1690 *try_sel = sel->r; 1691 } else { 1692 spin_lock_irqsave(&fimc->slock, flags); 1693 set_frame_crop(f, r->left, r->top, r->width, r->height); 1694 set_bit(ST_CAPT_APPLY_CFG, &fimc->state); 1695 if (sel->target == V4L2_SEL_TGT_COMPOSE) 1696 ctx->state |= FIMC_COMPOSE; 1697 spin_unlock_irqrestore(&fimc->slock, flags); 1698 } 1699 1700 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top, 1701 r->width, r->height); 1702 1703 mutex_unlock(&fimc->lock); 1704 return 0; 1705} 1706 1707static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = { 1708 .enum_mbus_code = fimc_subdev_enum_mbus_code, 1709 .get_selection = fimc_subdev_get_selection, 1710 .set_selection = fimc_subdev_set_selection, 1711 .get_fmt = fimc_subdev_get_fmt, 1712 .set_fmt = fimc_subdev_set_fmt, 1713}; 1714 1715static struct v4l2_subdev_ops fimc_subdev_ops = { 1716 .pad = &fimc_subdev_pad_ops, 1717}; 1718 1719/* Set default format at the sensor and host interface */ 1720static int fimc_capture_set_default_format(struct fimc_dev *fimc) 1721{ 1722 struct v4l2_format fmt = { 1723 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, 1724 .fmt.pix_mp = { 1725 .width = FIMC_DEFAULT_WIDTH, 1726 .height = FIMC_DEFAULT_HEIGHT, 1727 .pixelformat = V4L2_PIX_FMT_YUYV, 1728 .field = V4L2_FIELD_NONE, 1729 .colorspace = V4L2_COLORSPACE_JPEG, 1730 }, 1731 }; 1732 1733 return __fimc_capture_set_format(fimc, &fmt); 1734} 1735 1736/* fimc->lock must be already initialized */ 1737static int fimc_register_capture_device(struct fimc_dev *fimc, 1738 struct v4l2_device *v4l2_dev) 1739{ 1740 struct video_device *vfd = &fimc->vid_cap.ve.vdev; 1741 struct vb2_queue *q = &fimc->vid_cap.vbq; 1742 struct fimc_ctx *ctx; 1743 struct fimc_vid_cap *vid_cap; 1744 struct fimc_fmt *fmt; 1745 int ret = -ENOMEM; 1746 1747 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 1748 if (!ctx) 1749 return -ENOMEM; 1750 1751 ctx->fimc_dev = fimc; 1752 ctx->in_path = FIMC_IO_CAMERA; 1753 ctx->out_path = FIMC_IO_DMA; 1754 ctx->state = FIMC_CTX_CAP; 1755 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0); 1756 ctx->d_frame.fmt = ctx->s_frame.fmt; 1757 1758 memset(vfd, 0, sizeof(*vfd)); 1759 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id); 1760 1761 vfd->fops = &fimc_capture_fops; 1762 vfd->ioctl_ops = &fimc_capture_ioctl_ops; 1763 vfd->v4l2_dev = v4l2_dev; 1764 vfd->minor = -1; 1765 vfd->release = video_device_release_empty; 1766 vfd->queue = q; 1767 vfd->lock = &fimc->lock; 1768 1769 video_set_drvdata(vfd, fimc); 1770 vid_cap = &fimc->vid_cap; 1771 vid_cap->active_buf_cnt = 0; 1772 vid_cap->reqbufs_count = 0; 1773 vid_cap->ctx = ctx; 1774 1775 INIT_LIST_HEAD(&vid_cap->pending_buf_q); 1776 INIT_LIST_HEAD(&vid_cap->active_buf_q); 1777 1778 memset(q, 0, sizeof(*q)); 1779 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; 1780 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1781 q->drv_priv = ctx; 1782 q->ops = &fimc_capture_qops; 1783 q->mem_ops = &vb2_dma_contig_memops; 1784 q->buf_struct_size = sizeof(struct fimc_vid_buffer); 1785 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1786 q->lock = &fimc->lock; 1787 1788 ret = vb2_queue_init(q); 1789 if (ret) 1790 goto err_free_ctx; 1791 1792 /* Default format configuration */ 1793 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0); 1794 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH; 1795 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT; 1796 vid_cap->ci_fmt.code = fmt->mbus_code; 1797 1798 ctx->s_frame.width = FIMC_DEFAULT_WIDTH; 1799 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT; 1800 ctx->s_frame.fmt = fmt; 1801 1802 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0); 1803 vid_cap->wb_fmt = vid_cap->ci_fmt; 1804 vid_cap->wb_fmt.code = fmt->mbus_code; 1805 1806 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK; 1807 ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0); 1808 if (ret) 1809 goto err_free_ctx; 1810 1811 ret = fimc_ctrls_create(ctx); 1812 if (ret) 1813 goto err_me_cleanup; 1814 1815 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); 1816 if (ret) 1817 goto err_ctrl_free; 1818 1819 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", 1820 vfd->name, video_device_node_name(vfd)); 1821 1822 vfd->ctrl_handler = &ctx->ctrls.handler; 1823 return 0; 1824 1825err_ctrl_free: 1826 fimc_ctrls_delete(ctx); 1827err_me_cleanup: 1828 media_entity_cleanup(&vfd->entity); 1829err_free_ctx: 1830 kfree(ctx); 1831 return ret; 1832} 1833 1834static int fimc_capture_subdev_registered(struct v4l2_subdev *sd) 1835{ 1836 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1837 int ret; 1838 1839 if (fimc == NULL) 1840 return -ENXIO; 1841 1842 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev); 1843 if (ret) 1844 return ret; 1845 1846 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd); 1847 1848 ret = fimc_register_capture_device(fimc, sd->v4l2_dev); 1849 if (ret) { 1850 fimc_unregister_m2m_device(fimc); 1851 fimc->vid_cap.ve.pipe = NULL; 1852 } 1853 1854 return ret; 1855} 1856 1857static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd) 1858{ 1859 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1860 struct video_device *vdev; 1861 1862 if (fimc == NULL) 1863 return; 1864 1865 mutex_lock(&fimc->lock); 1866 1867 fimc_unregister_m2m_device(fimc); 1868 vdev = &fimc->vid_cap.ve.vdev; 1869 1870 if (video_is_registered(vdev)) { 1871 video_unregister_device(vdev); 1872 media_entity_cleanup(&vdev->entity); 1873 fimc_ctrls_delete(fimc->vid_cap.ctx); 1874 fimc->vid_cap.ve.pipe = NULL; 1875 } 1876 kfree(fimc->vid_cap.ctx); 1877 fimc->vid_cap.ctx = NULL; 1878 1879 mutex_unlock(&fimc->lock); 1880} 1881 1882static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = { 1883 .registered = fimc_capture_subdev_registered, 1884 .unregistered = fimc_capture_subdev_unregistered, 1885}; 1886 1887int fimc_initialize_capture_subdev(struct fimc_dev *fimc) 1888{ 1889 struct v4l2_subdev *sd = &fimc->vid_cap.subdev; 1890 int ret; 1891 1892 v4l2_subdev_init(sd, &fimc_subdev_ops); 1893 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1894 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id); 1895 1896 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK; 1897 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK; 1898 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; 1899 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM, 1900 fimc->vid_cap.sd_pads, 0); 1901 if (ret) 1902 return ret; 1903 1904 sd->entity.ops = &fimc_sd_media_ops; 1905 sd->internal_ops = &fimc_capture_sd_internal_ops; 1906 v4l2_set_subdevdata(sd, fimc); 1907 return 0; 1908} 1909 1910void fimc_unregister_capture_subdev(struct fimc_dev *fimc) 1911{ 1912 struct v4l2_subdev *sd = &fimc->vid_cap.subdev; 1913 1914 v4l2_device_unregister_subdev(sd); 1915 media_entity_cleanup(&sd->entity); 1916 v4l2_set_subdevdata(sd, NULL); 1917} 1918