1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver 4 * 5 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd. 6 * Sylwester Nawrocki <s.nawrocki@samsung.com> 7 */ 8 9 #include <linux/module.h> 10 #include <linux/kernel.h> 11 #include <linux/types.h> 12 #include <linux/errno.h> 13 #include <linux/bug.h> 14 #include <linux/interrupt.h> 15 #include <linux/device.h> 16 #include <linux/pm_runtime.h> 17 #include <linux/list.h> 18 #include <linux/slab.h> 19 20 #include <linux/videodev2.h> 21 #include <media/v4l2-device.h> 22 #include <media/v4l2-ioctl.h> 23 #include <media/v4l2-mem2mem.h> 24 #include <media/v4l2-rect.h> 25 #include <media/videobuf2-v4l2.h> 26 #include <media/videobuf2-dma-contig.h> 27 28 #include "common.h" 29 #include "fimc-core.h" 30 #include "fimc-reg.h" 31 #include "media-dev.h" 32 33 static int fimc_capture_hw_init(struct fimc_dev *fimc) 34 { 35 struct fimc_source_info *si = &fimc->vid_cap.source_config; 36 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 37 int ret; 38 unsigned long flags; 39 40 if (ctx == NULL || ctx->s_frame.fmt == NULL) 41 return -EINVAL; 42 43 if (si->fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK) { 44 ret = fimc_hw_camblk_cfg_writeback(fimc); 45 if (ret < 0) 46 return ret; 47 } 48 49 spin_lock_irqsave(&fimc->slock, flags); 50 fimc_prepare_dma_offset(ctx, &ctx->d_frame); 51 fimc_set_yuv_order(ctx); 52 53 fimc_hw_set_camera_polarity(fimc, si); 54 fimc_hw_set_camera_type(fimc, si); 55 fimc_hw_set_camera_source(fimc, si); 56 fimc_hw_set_camera_offset(fimc, &ctx->s_frame); 57 58 ret = fimc_set_scaler_info(ctx); 59 if (!ret) { 60 fimc_hw_set_input_path(ctx); 61 fimc_hw_set_prescaler(ctx); 62 fimc_hw_set_mainscaler(ctx); 63 fimc_hw_set_target_format(ctx); 64 fimc_hw_set_rotation(ctx); 65 fimc_hw_set_effect(ctx); 66 fimc_hw_set_output_path(ctx); 67 fimc_hw_set_out_dma(ctx); 68 if (fimc->drv_data->alpha_color) 69 fimc_hw_set_rgb_alpha(ctx); 70 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state); 71 } 72 spin_unlock_irqrestore(&fimc->slock, flags); 73 return ret; 74 } 75 76 /* 77 * Reinitialize the driver so it is ready to start the streaming again. 78 * Set fimc->state to indicate stream off and the hardware shut down state. 79 * If not suspending (@suspend is false), return any buffers to videobuf2. 80 * Otherwise put any owned buffers onto the pending buffers queue, so they 81 * can be re-spun when the device is being resumed. Also perform FIMC 82 * software reset and disable streaming on the whole pipeline if required. 83 */ 84 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend) 85 { 86 struct fimc_vid_cap *cap = &fimc->vid_cap; 87 struct fimc_vid_buffer *buf; 88 unsigned long flags; 89 bool streaming; 90 91 spin_lock_irqsave(&fimc->slock, flags); 92 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM); 93 94 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT | 95 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM); 96 if (suspend) 97 fimc->state |= (1 << ST_CAPT_SUSPENDED); 98 else 99 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED); 100 101 /* Release unused buffers */ 102 while (!suspend && !list_empty(&cap->pending_buf_q)) { 103 buf = fimc_pending_queue_pop(cap); 104 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 105 } 106 /* If suspending put unused buffers onto pending queue */ 107 while (!list_empty(&cap->active_buf_q)) { 108 buf = fimc_active_queue_pop(cap); 109 if (suspend) 110 fimc_pending_queue_add(cap, buf); 111 else 112 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 113 } 114 115 fimc_hw_reset(fimc); 116 cap->buf_index = 0; 117 118 spin_unlock_irqrestore(&fimc->slock, flags); 119 120 if (streaming) 121 return fimc_pipeline_call(&cap->ve, set_stream, 0); 122 else 123 return 0; 124 } 125 126 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend) 127 { 128 unsigned long flags; 129 130 if (!fimc_capture_active(fimc)) 131 return 0; 132 133 spin_lock_irqsave(&fimc->slock, flags); 134 set_bit(ST_CAPT_SHUT, &fimc->state); 135 fimc_deactivate_capture(fimc); 136 spin_unlock_irqrestore(&fimc->slock, flags); 137 138 wait_event_timeout(fimc->irq_queue, 139 !test_bit(ST_CAPT_SHUT, &fimc->state), 140 (2*HZ/10)); /* 200 ms */ 141 142 return fimc_capture_state_cleanup(fimc, suspend); 143 } 144 145 /** 146 * fimc_capture_config_update - apply the camera interface configuration 147 * @ctx: FIMC capture context 148 * 149 * To be called from within the interrupt handler with fimc.slock 150 * spinlock held. It updates the camera pixel crop, rotation and 151 * image flip in H/W. 152 */ 153 static int fimc_capture_config_update(struct fimc_ctx *ctx) 154 { 155 struct fimc_dev *fimc = ctx->fimc_dev; 156 int ret; 157 158 fimc_hw_set_camera_offset(fimc, &ctx->s_frame); 159 160 ret = fimc_set_scaler_info(ctx); 161 if (ret) 162 return ret; 163 164 fimc_hw_set_prescaler(ctx); 165 fimc_hw_set_mainscaler(ctx); 166 fimc_hw_set_target_format(ctx); 167 fimc_hw_set_rotation(ctx); 168 fimc_hw_set_effect(ctx); 169 fimc_prepare_dma_offset(ctx, &ctx->d_frame); 170 fimc_hw_set_out_dma(ctx); 171 if (fimc->drv_data->alpha_color) 172 fimc_hw_set_rgb_alpha(ctx); 173 174 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state); 175 return ret; 176 } 177 178 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf) 179 { 180 struct fimc_vid_cap *cap = &fimc->vid_cap; 181 struct fimc_pipeline *p = to_fimc_pipeline(cap->ve.pipe); 182 struct v4l2_subdev *csis = p->subdevs[IDX_CSIS]; 183 const struct fimc_frame *f = &cap->ctx->d_frame; 184 struct fimc_vid_buffer *v_buf; 185 186 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) { 187 wake_up(&fimc->irq_queue); 188 goto done; 189 } 190 191 if (!list_empty(&cap->active_buf_q) && 192 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) { 193 v_buf = fimc_active_queue_pop(cap); 194 195 v_buf->vb.vb2_buf.timestamp = ktime_get_ns(); 196 v_buf->vb.sequence = cap->frame_count++; 197 198 vb2_buffer_done(&v_buf->vb.vb2_buf, VB2_BUF_STATE_DONE); 199 } 200 201 if (!list_empty(&cap->pending_buf_q)) { 202 203 v_buf = fimc_pending_queue_pop(cap); 204 fimc_hw_set_output_addr(fimc, &v_buf->addr, cap->buf_index); 205 v_buf->index = cap->buf_index; 206 207 /* Move the buffer to the capture active queue */ 208 fimc_active_queue_add(cap, v_buf); 209 210 dbg("next frame: %d, done frame: %d", 211 fimc_hw_get_frame_index(fimc), v_buf->index); 212 213 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) 214 cap->buf_index = 0; 215 } 216 /* 217 * Set up a buffer at MIPI-CSIS if current image format 218 * requires the frame embedded data capture. 219 */ 220 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) { 221 unsigned int plane = ffs(f->fmt->mdataplanes) - 1; 222 unsigned int size = f->payload[plane]; 223 s32 index = fimc_hw_get_frame_index(fimc); 224 void *vaddr; 225 226 list_for_each_entry(v_buf, &cap->active_buf_q, list) { 227 if (v_buf->index != index) 228 continue; 229 vaddr = vb2_plane_vaddr(&v_buf->vb.vb2_buf, plane); 230 v4l2_subdev_call(csis, video, s_rx_buffer, 231 vaddr, &size); 232 break; 233 } 234 } 235 236 if (cap->active_buf_cnt == 0) { 237 if (deq_buf) 238 clear_bit(ST_CAPT_RUN, &fimc->state); 239 240 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) 241 cap->buf_index = 0; 242 } else { 243 set_bit(ST_CAPT_RUN, &fimc->state); 244 } 245 246 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state)) 247 fimc_capture_config_update(cap->ctx); 248 done: 249 if (cap->active_buf_cnt == 1) { 250 fimc_deactivate_capture(fimc); 251 clear_bit(ST_CAPT_STREAM, &fimc->state); 252 } 253 254 dbg("frame: %d, active_buf_cnt: %d", 255 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt); 256 } 257 258 259 static int start_streaming(struct vb2_queue *q, unsigned int count) 260 { 261 struct fimc_ctx *ctx = q->drv_priv; 262 struct fimc_dev *fimc = ctx->fimc_dev; 263 struct fimc_vid_cap *vid_cap = &fimc->vid_cap; 264 int min_bufs; 265 int ret; 266 267 vid_cap->frame_count = 0; 268 269 ret = fimc_capture_hw_init(fimc); 270 if (ret) { 271 fimc_capture_state_cleanup(fimc, false); 272 return ret; 273 } 274 275 set_bit(ST_CAPT_PEND, &fimc->state); 276 277 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1; 278 279 if (vid_cap->active_buf_cnt >= min_bufs && 280 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) { 281 fimc_activate_capture(ctx); 282 283 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state)) 284 return fimc_pipeline_call(&vid_cap->ve, set_stream, 1); 285 } 286 287 return 0; 288 } 289 290 static void stop_streaming(struct vb2_queue *q) 291 { 292 struct fimc_ctx *ctx = q->drv_priv; 293 struct fimc_dev *fimc = ctx->fimc_dev; 294 295 if (!fimc_capture_active(fimc)) 296 return; 297 298 fimc_stop_capture(fimc, false); 299 } 300 301 int fimc_capture_suspend(struct fimc_dev *fimc) 302 { 303 bool suspend = fimc_capture_busy(fimc); 304 305 int ret = fimc_stop_capture(fimc, suspend); 306 if (ret) 307 return ret; 308 return fimc_pipeline_call(&fimc->vid_cap.ve, close); 309 } 310 311 static void buffer_queue(struct vb2_buffer *vb); 312 313 int fimc_capture_resume(struct fimc_dev *fimc) 314 { 315 struct fimc_vid_cap *vid_cap = &fimc->vid_cap; 316 struct exynos_video_entity *ve = &vid_cap->ve; 317 struct fimc_vid_buffer *buf; 318 int i; 319 320 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state)) 321 return 0; 322 323 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q); 324 vid_cap->buf_index = 0; 325 fimc_pipeline_call(ve, open, &ve->vdev.entity, false); 326 fimc_capture_hw_init(fimc); 327 328 clear_bit(ST_CAPT_SUSPENDED, &fimc->state); 329 330 for (i = 0; i < vid_cap->reqbufs_count; i++) { 331 if (list_empty(&vid_cap->pending_buf_q)) 332 break; 333 buf = fimc_pending_queue_pop(vid_cap); 334 buffer_queue(&buf->vb.vb2_buf); 335 } 336 return 0; 337 338 } 339 340 static int queue_setup(struct vb2_queue *vq, 341 unsigned int *num_buffers, unsigned int *num_planes, 342 unsigned int sizes[], struct device *alloc_devs[]) 343 { 344 struct fimc_ctx *ctx = vq->drv_priv; 345 const struct fimc_frame *frame = &ctx->d_frame; 346 const struct fimc_fmt *fmt = frame->fmt; 347 unsigned long wh = frame->f_width * frame->f_height; 348 int i; 349 350 if (fmt == NULL) 351 return -EINVAL; 352 353 if (*num_planes) { 354 if (*num_planes != fmt->memplanes) 355 return -EINVAL; 356 for (i = 0; i < *num_planes; i++) 357 if (sizes[i] < (wh * fmt->depth[i]) / 8) 358 return -EINVAL; 359 return 0; 360 } 361 362 *num_planes = fmt->memplanes; 363 364 for (i = 0; i < fmt->memplanes; i++) { 365 unsigned int size = (wh * fmt->depth[i]) / 8; 366 367 if (fimc_fmt_is_user_defined(fmt->color)) 368 sizes[i] = frame->payload[i]; 369 else 370 sizes[i] = max_t(u32, size, frame->payload[i]); 371 } 372 373 return 0; 374 } 375 376 static int buffer_prepare(struct vb2_buffer *vb) 377 { 378 struct vb2_queue *vq = vb->vb2_queue; 379 struct fimc_ctx *ctx = vq->drv_priv; 380 int i; 381 382 if (ctx->d_frame.fmt == NULL) 383 return -EINVAL; 384 385 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) { 386 unsigned long size = ctx->d_frame.payload[i]; 387 388 if (vb2_plane_size(vb, i) < size) { 389 v4l2_err(&ctx->fimc_dev->vid_cap.ve.vdev, 390 "User buffer too small (%ld < %ld)\n", 391 vb2_plane_size(vb, i), size); 392 return -EINVAL; 393 } 394 vb2_set_plane_payload(vb, i, size); 395 } 396 397 return 0; 398 } 399 400 static void buffer_queue(struct vb2_buffer *vb) 401 { 402 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 403 struct fimc_vid_buffer *buf 404 = container_of(vbuf, struct fimc_vid_buffer, vb); 405 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 406 struct fimc_dev *fimc = ctx->fimc_dev; 407 struct fimc_vid_cap *vid_cap = &fimc->vid_cap; 408 struct exynos_video_entity *ve = &vid_cap->ve; 409 unsigned long flags; 410 int min_bufs; 411 412 spin_lock_irqsave(&fimc->slock, flags); 413 fimc_prepare_addr(ctx, &buf->vb.vb2_buf, &ctx->d_frame, &buf->addr); 414 415 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) && 416 !test_bit(ST_CAPT_STREAM, &fimc->state) && 417 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) { 418 /* Setup the buffer directly for processing. */ 419 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 : 420 vid_cap->buf_index; 421 422 fimc_hw_set_output_addr(fimc, &buf->addr, buf_id); 423 buf->index = vid_cap->buf_index; 424 fimc_active_queue_add(vid_cap, buf); 425 426 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS) 427 vid_cap->buf_index = 0; 428 } else { 429 fimc_pending_queue_add(vid_cap, buf); 430 } 431 432 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1; 433 434 435 if (vb2_is_streaming(&vid_cap->vbq) && 436 vid_cap->active_buf_cnt >= min_bufs && 437 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) { 438 int ret; 439 440 fimc_activate_capture(ctx); 441 spin_unlock_irqrestore(&fimc->slock, flags); 442 443 if (test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state)) 444 return; 445 446 ret = fimc_pipeline_call(ve, set_stream, 1); 447 if (ret < 0) 448 v4l2_err(&ve->vdev, "stream on failed: %d\n", ret); 449 return; 450 } 451 spin_unlock_irqrestore(&fimc->slock, flags); 452 } 453 454 static const struct vb2_ops fimc_capture_qops = { 455 .queue_setup = queue_setup, 456 .buf_prepare = buffer_prepare, 457 .buf_queue = buffer_queue, 458 .wait_prepare = vb2_ops_wait_prepare, 459 .wait_finish = vb2_ops_wait_finish, 460 .start_streaming = start_streaming, 461 .stop_streaming = stop_streaming, 462 }; 463 464 static int fimc_capture_set_default_format(struct fimc_dev *fimc); 465 466 static int fimc_capture_open(struct file *file) 467 { 468 struct fimc_dev *fimc = video_drvdata(file); 469 struct fimc_vid_cap *vc = &fimc->vid_cap; 470 struct exynos_video_entity *ve = &vc->ve; 471 int ret = -EBUSY; 472 473 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state); 474 475 mutex_lock(&fimc->lock); 476 477 if (fimc_m2m_active(fimc)) 478 goto unlock; 479 480 set_bit(ST_CAPT_BUSY, &fimc->state); 481 ret = pm_runtime_resume_and_get(&fimc->pdev->dev); 482 if (ret < 0) 483 goto unlock; 484 485 ret = v4l2_fh_open(file); 486 if (ret) { 487 pm_runtime_put_sync(&fimc->pdev->dev); 488 goto unlock; 489 } 490 491 if (v4l2_fh_is_singular_file(file)) { 492 fimc_md_graph_lock(ve); 493 494 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true); 495 496 if (ret == 0) 497 ve->vdev.entity.use_count++; 498 499 fimc_md_graph_unlock(ve); 500 501 if (ret == 0) 502 ret = fimc_capture_set_default_format(fimc); 503 504 if (ret < 0) { 505 clear_bit(ST_CAPT_BUSY, &fimc->state); 506 pm_runtime_put_sync(&fimc->pdev->dev); 507 v4l2_fh_release(file); 508 } 509 } 510 unlock: 511 mutex_unlock(&fimc->lock); 512 return ret; 513 } 514 515 static int fimc_capture_release(struct file *file) 516 { 517 struct fimc_dev *fimc = video_drvdata(file); 518 struct fimc_vid_cap *vc = &fimc->vid_cap; 519 bool close = v4l2_fh_is_singular_file(file); 520 int ret; 521 522 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state); 523 524 mutex_lock(&fimc->lock); 525 526 if (close && vc->streaming) { 527 video_device_pipeline_stop(&vc->ve.vdev); 528 vc->streaming = false; 529 } 530 531 ret = _vb2_fop_release(file, NULL); 532 533 if (close) { 534 clear_bit(ST_CAPT_BUSY, &fimc->state); 535 fimc_pipeline_call(&vc->ve, close); 536 clear_bit(ST_CAPT_SUSPENDED, &fimc->state); 537 538 fimc_md_graph_lock(&vc->ve); 539 vc->ve.vdev.entity.use_count--; 540 fimc_md_graph_unlock(&vc->ve); 541 } 542 543 pm_runtime_put_sync(&fimc->pdev->dev); 544 mutex_unlock(&fimc->lock); 545 546 return ret; 547 } 548 549 static const struct v4l2_file_operations fimc_capture_fops = { 550 .owner = THIS_MODULE, 551 .open = fimc_capture_open, 552 .release = fimc_capture_release, 553 .poll = vb2_fop_poll, 554 .unlocked_ioctl = video_ioctl2, 555 .mmap = vb2_fop_mmap, 556 }; 557 558 /* 559 * Format and crop negotiation helpers 560 */ 561 562 static const struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx, 563 u32 *width, u32 *height, 564 u32 *code, u32 *fourcc, int pad) 565 { 566 bool rotation = ctx->rotation == 90 || ctx->rotation == 270; 567 struct fimc_dev *fimc = ctx->fimc_dev; 568 const struct fimc_variant *var = fimc->variant; 569 const struct fimc_pix_limit *pl = var->pix_limit; 570 const struct fimc_frame *dst = &ctx->d_frame; 571 u32 depth, min_w, max_w, min_h, align_h = 3; 572 const struct fimc_fmt *ffmt; 573 u32 mask = FMT_FLAGS_CAM; 574 575 /* Conversion from/to JPEG or User Defined format is not supported */ 576 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE && 577 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color)) 578 *code = ctx->s_frame.fmt->mbus_code; 579 580 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE) 581 mask |= FMT_FLAGS_M2M; 582 583 if (pad == FIMC_SD_PAD_SINK_FIFO) 584 mask = FMT_FLAGS_WRITEBACK; 585 586 ffmt = fimc_find_format(fourcc, code, mask, 0); 587 if (WARN_ON(!ffmt)) 588 return NULL; 589 590 if (code) 591 *code = ffmt->mbus_code; 592 if (fourcc) 593 *fourcc = ffmt->fourcc; 594 595 if (pad != FIMC_SD_PAD_SOURCE) { 596 max_w = fimc_fmt_is_user_defined(ffmt->color) ? 597 pl->scaler_dis_w : pl->scaler_en_w; 598 /* Apply the camera input interface pixel constraints */ 599 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4, 600 height, max_t(u32, *height, 32), 601 FIMC_CAMIF_MAX_HEIGHT, 602 fimc_fmt_is_user_defined(ffmt->color) ? 603 3 : 1, 604 0); 605 return ffmt; 606 } 607 /* Can't scale or crop in transparent (JPEG) transfer mode */ 608 if (fimc_fmt_is_user_defined(ffmt->color)) { 609 *width = ctx->s_frame.f_width; 610 *height = ctx->s_frame.f_height; 611 return ffmt; 612 } 613 /* Apply the scaler and the output DMA constraints */ 614 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w; 615 if (ctx->state & FIMC_COMPOSE) { 616 min_w = dst->offs_h + dst->width; 617 min_h = dst->offs_v + dst->height; 618 } else { 619 min_w = var->min_out_pixsize; 620 min_h = var->min_out_pixsize; 621 } 622 if (var->min_vsize_align == 1 && !rotation) 623 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1; 624 625 depth = fimc_get_format_depth(ffmt); 626 v4l_bound_align_image(width, min_w, max_w, 627 ffs(var->min_out_pixsize) - 1, 628 height, min_h, FIMC_CAMIF_MAX_HEIGHT, 629 align_h, 630 64/(ALIGN(depth, 8))); 631 632 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d", 633 pad, code ? *code : 0, *width, *height, 634 dst->f_width, dst->f_height); 635 636 return ffmt; 637 } 638 639 static void fimc_capture_try_selection(struct fimc_ctx *ctx, 640 struct v4l2_rect *r, 641 int target) 642 { 643 bool rotate = ctx->rotation == 90 || ctx->rotation == 270; 644 struct fimc_dev *fimc = ctx->fimc_dev; 645 const struct fimc_variant *var = fimc->variant; 646 const struct fimc_pix_limit *pl = var->pix_limit; 647 const struct fimc_frame *sink = &ctx->s_frame; 648 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz; 649 u32 align_sz = 0, align_h = 4; 650 u32 max_sc_h, max_sc_v; 651 652 /* In JPEG transparent transfer mode cropping is not supported */ 653 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) { 654 r->width = sink->f_width; 655 r->height = sink->f_height; 656 r->left = r->top = 0; 657 return; 658 } 659 if (target == V4L2_SEL_TGT_COMPOSE) { 660 u32 tmp_min_h = ffs(sink->width) - 3; 661 u32 tmp_min_v = ffs(sink->height) - 1; 662 663 if (ctx->rotation != 90 && ctx->rotation != 270) 664 align_h = 1; 665 max_sc_h = min(SCALER_MAX_HRATIO, 1 << tmp_min_h); 666 max_sc_v = min(SCALER_MAX_VRATIO, 1 << tmp_min_v); 667 min_sz = var->min_out_pixsize; 668 } else { 669 u32 depth = fimc_get_format_depth(sink->fmt); 670 align_sz = 64/ALIGN(depth, 8); 671 min_sz = var->min_inp_pixsize; 672 min_w = min_h = min_sz; 673 max_sc_h = max_sc_v = 1; 674 } 675 /* 676 * For the compose rectangle the following constraints must be met: 677 * - it must fit in the sink pad format rectangle (f_width/f_height); 678 * - maximum downscaling ratio is 64; 679 * - maximum crop size depends if the rotator is used or not; 680 * - the sink pad format width/height must be 4 multiple of the 681 * prescaler ratios determined by sink pad size and source pad crop, 682 * the prescaler ratio is returned by fimc_get_scaler_factor(). 683 */ 684 max_w = min_t(u32, 685 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w, 686 rotate ? sink->f_height : sink->f_width); 687 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height); 688 689 if (target == V4L2_SEL_TGT_COMPOSE) { 690 min_w = min_t(u32, max_w, sink->f_width / max_sc_h); 691 min_h = min_t(u32, max_h, sink->f_height / max_sc_v); 692 if (rotate) { 693 swap(max_sc_h, max_sc_v); 694 swap(min_w, min_h); 695 } 696 } 697 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1, 698 &r->height, min_h, max_h, align_h, 699 align_sz); 700 /* Adjust left/top if crop/compose rectangle is out of bounds */ 701 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width); 702 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height); 703 r->left = round_down(r->left, var->hor_offs_align); 704 705 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d", 706 target, r->left, r->top, r->width, r->height, 707 sink->f_width, sink->f_height); 708 } 709 710 /* 711 * The video node ioctl operations 712 */ 713 static int fimc_cap_querycap(struct file *file, void *priv, 714 struct v4l2_capability *cap) 715 { 716 struct fimc_dev *fimc = video_drvdata(file); 717 718 __fimc_vidioc_querycap(&fimc->pdev->dev, cap); 719 return 0; 720 } 721 722 static int fimc_cap_enum_fmt(struct file *file, void *priv, 723 struct v4l2_fmtdesc *f) 724 { 725 const struct fimc_fmt *fmt; 726 727 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M, 728 f->index); 729 if (!fmt) 730 return -EINVAL; 731 f->pixelformat = fmt->fourcc; 732 return 0; 733 } 734 735 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me) 736 { 737 struct media_pad *pad = &me->pads[0]; 738 739 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) { 740 pad = media_pad_remote_pad_first(pad); 741 if (!pad) 742 break; 743 me = pad->entity; 744 pad = &me->pads[0]; 745 } 746 747 return me; 748 } 749 750 /** 751 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline 752 * elements 753 * @ctx: FIMC capture context 754 * @tfmt: media bus format to try/set on subdevs 755 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output) 756 * @set: true to set format on subdevs, false to try only 757 */ 758 static int fimc_pipeline_try_format(struct fimc_ctx *ctx, 759 struct v4l2_mbus_framefmt *tfmt, 760 const struct fimc_fmt **fmt_id, 761 bool set) 762 { 763 struct fimc_dev *fimc = ctx->fimc_dev; 764 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe); 765 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR]; 766 struct v4l2_subdev_format sfmt = { 767 .which = set ? V4L2_SUBDEV_FORMAT_ACTIVE 768 : V4L2_SUBDEV_FORMAT_TRY, 769 }; 770 struct v4l2_mbus_framefmt *mf = &sfmt.format; 771 const struct fimc_fmt *ffmt; 772 struct media_entity *me; 773 struct media_pad *pad; 774 int ret, i = 1; 775 u32 fcc; 776 777 if (WARN_ON(!sd || !tfmt)) 778 return -EINVAL; 779 780 sfmt.format = *tfmt; 781 782 me = fimc_pipeline_get_head(&sd->entity); 783 784 while (1) { 785 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL, 786 FMT_FLAGS_CAM, i++); 787 if (ffmt == NULL) { 788 /* 789 * Notify user-space if common pixel code for 790 * host and sensor does not exist. 791 */ 792 return -EINVAL; 793 } 794 mf->code = tfmt->code = ffmt->mbus_code; 795 796 /* set format on all pipeline subdevs */ 797 while (me != &fimc->vid_cap.subdev.entity) { 798 sd = media_entity_to_v4l2_subdev(me); 799 800 sfmt.pad = 0; 801 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt); 802 if (ret) 803 return ret; 804 805 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) { 806 sfmt.pad = me->num_pads - 1; 807 mf->code = tfmt->code; 808 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, 809 &sfmt); 810 if (ret) 811 return ret; 812 } 813 814 pad = media_pad_remote_pad_first(&me->pads[sfmt.pad]); 815 if (!pad) 816 return -EINVAL; 817 me = pad->entity; 818 } 819 820 if (mf->code != tfmt->code) 821 continue; 822 823 fcc = ffmt->fourcc; 824 tfmt->width = mf->width; 825 tfmt->height = mf->height; 826 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height, 827 NULL, &fcc, FIMC_SD_PAD_SINK_CAM); 828 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height, 829 NULL, &fcc, FIMC_SD_PAD_SOURCE); 830 if (ffmt && ffmt->mbus_code) 831 mf->code = ffmt->mbus_code; 832 if (mf->width != tfmt->width || mf->height != tfmt->height) 833 continue; 834 tfmt->code = mf->code; 835 break; 836 } 837 838 if (fmt_id && ffmt) 839 *fmt_id = ffmt; 840 *tfmt = *mf; 841 842 return 0; 843 } 844 845 /** 846 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters 847 * @sensor: pointer to the sensor subdev 848 * @plane_fmt: provides plane sizes corresponding to the frame layout entries 849 * @num_planes: number of planes 850 * @try: true to set the frame parameters, false to query only 851 * 852 * This function is used by this driver only for compressed/blob data formats. 853 */ 854 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor, 855 struct v4l2_plane_pix_format *plane_fmt, 856 unsigned int num_planes, bool try) 857 { 858 struct v4l2_mbus_frame_desc fd = { }; 859 int i, ret; 860 int pad; 861 862 for (i = 0; i < num_planes; i++) 863 fd.entry[i].length = plane_fmt[i].sizeimage; 864 865 pad = sensor->entity.num_pads - 1; 866 if (try) 867 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd); 868 else 869 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd); 870 871 if (ret < 0) 872 return ret; 873 874 if (num_planes != fd.num_entries) 875 return -EINVAL; 876 877 for (i = 0; i < num_planes; i++) 878 plane_fmt[i].sizeimage = fd.entry[i].length; 879 880 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) { 881 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n", 882 fd.entry[0].length); 883 884 return -EINVAL; 885 } 886 887 return 0; 888 } 889 890 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh, 891 struct v4l2_format *f) 892 { 893 struct fimc_dev *fimc = video_drvdata(file); 894 895 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f); 896 return 0; 897 } 898 899 /* 900 * Try or set format on the fimc.X.capture video node and additionally 901 * on the whole pipeline if @try is false. 902 * Locking: the caller must _not_ hold the graph mutex. 903 */ 904 static int __video_try_or_set_format(struct fimc_dev *fimc, 905 struct v4l2_format *f, bool try, 906 const struct fimc_fmt **inp_fmt, 907 const struct fimc_fmt **out_fmt) 908 { 909 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; 910 struct fimc_vid_cap *vc = &fimc->vid_cap; 911 struct exynos_video_entity *ve = &vc->ve; 912 struct fimc_ctx *ctx = vc->ctx; 913 unsigned int width = 0, height = 0; 914 int ret = 0; 915 916 /* Pre-configure format at the camera input interface, for JPEG only */ 917 if (fimc_jpeg_fourcc(pix->pixelformat)) { 918 fimc_capture_try_format(ctx, &pix->width, &pix->height, 919 NULL, &pix->pixelformat, 920 FIMC_SD_PAD_SINK_CAM); 921 if (try) { 922 width = pix->width; 923 height = pix->height; 924 } else { 925 ctx->s_frame.f_width = pix->width; 926 ctx->s_frame.f_height = pix->height; 927 } 928 } 929 930 /* Try the format at the scaler and the DMA output */ 931 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height, 932 NULL, &pix->pixelformat, 933 FIMC_SD_PAD_SOURCE); 934 if (*out_fmt == NULL) 935 return -EINVAL; 936 937 /* Restore image width/height for JPEG (no resizing supported). */ 938 if (try && fimc_jpeg_fourcc(pix->pixelformat)) { 939 pix->width = width; 940 pix->height = height; 941 } 942 943 /* Try to match format at the host and the sensor */ 944 if (!vc->user_subdev_api) { 945 struct v4l2_mbus_framefmt mbus_fmt; 946 struct v4l2_mbus_framefmt *mf; 947 948 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt; 949 950 mf->code = (*out_fmt)->mbus_code; 951 mf->width = pix->width; 952 mf->height = pix->height; 953 954 fimc_md_graph_lock(ve); 955 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try); 956 fimc_md_graph_unlock(ve); 957 958 if (ret < 0) 959 return ret; 960 961 pix->width = mf->width; 962 pix->height = mf->height; 963 } 964 965 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix); 966 967 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) { 968 struct v4l2_subdev *sensor; 969 970 fimc_md_graph_lock(ve); 971 972 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR); 973 if (sensor) 974 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt, 975 (*out_fmt)->memplanes, try); 976 else 977 ret = -EPIPE; 978 979 fimc_md_graph_unlock(ve); 980 } 981 982 return ret; 983 } 984 985 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh, 986 struct v4l2_format *f) 987 { 988 struct fimc_dev *fimc = video_drvdata(file); 989 const struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL; 990 991 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt); 992 } 993 994 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, 995 enum fimc_color_fmt color) 996 { 997 bool jpeg = fimc_fmt_is_user_defined(color); 998 999 ctx->scaler.enabled = !jpeg; 1000 fimc_ctrls_activate(ctx, !jpeg); 1001 1002 if (jpeg) 1003 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state); 1004 else 1005 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state); 1006 } 1007 1008 static int __fimc_capture_set_format(struct fimc_dev *fimc, 1009 struct v4l2_format *f) 1010 { 1011 struct fimc_vid_cap *vc = &fimc->vid_cap; 1012 struct fimc_ctx *ctx = vc->ctx; 1013 const struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; 1014 struct fimc_frame *ff = &ctx->d_frame; 1015 const struct fimc_fmt *inp_fmt = NULL; 1016 int ret, i; 1017 1018 if (vb2_is_busy(&fimc->vid_cap.vbq)) 1019 return -EBUSY; 1020 1021 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt); 1022 if (ret < 0) 1023 return ret; 1024 1025 /* Update RGB Alpha control state and value range */ 1026 fimc_alpha_ctrl_update(ctx); 1027 1028 for (i = 0; i < ff->fmt->memplanes; i++) { 1029 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline; 1030 ff->payload[i] = pix->plane_fmt[i].sizeimage; 1031 } 1032 1033 set_frame_bounds(ff, pix->width, pix->height); 1034 /* Reset the composition rectangle if not yet configured */ 1035 if (!(ctx->state & FIMC_COMPOSE)) 1036 set_frame_crop(ff, 0, 0, pix->width, pix->height); 1037 1038 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color); 1039 1040 /* Reset cropping and set format at the camera interface input */ 1041 if (!vc->user_subdev_api) { 1042 ctx->s_frame.fmt = inp_fmt; 1043 set_frame_bounds(&ctx->s_frame, pix->width, pix->height); 1044 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height); 1045 } 1046 1047 return ret; 1048 } 1049 1050 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv, 1051 struct v4l2_format *f) 1052 { 1053 struct fimc_dev *fimc = video_drvdata(file); 1054 1055 return __fimc_capture_set_format(fimc, f); 1056 } 1057 1058 static int fimc_cap_enum_input(struct file *file, void *priv, 1059 struct v4l2_input *i) 1060 { 1061 struct fimc_dev *fimc = video_drvdata(file); 1062 struct exynos_video_entity *ve = &fimc->vid_cap.ve; 1063 struct v4l2_subdev *sd; 1064 1065 if (i->index != 0) 1066 return -EINVAL; 1067 1068 i->type = V4L2_INPUT_TYPE_CAMERA; 1069 fimc_md_graph_lock(ve); 1070 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR); 1071 fimc_md_graph_unlock(ve); 1072 1073 if (sd) 1074 strscpy(i->name, sd->name, sizeof(i->name)); 1075 1076 return 0; 1077 } 1078 1079 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i) 1080 { 1081 return i == 0 ? i : -EINVAL; 1082 } 1083 1084 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i) 1085 { 1086 *i = 0; 1087 return 0; 1088 } 1089 1090 /** 1091 * fimc_pipeline_validate - check for formats inconsistencies 1092 * between source and sink pad of each link 1093 * @fimc: the FIMC device this context applies to 1094 * 1095 * Return 0 if all formats match or -EPIPE otherwise. 1096 */ 1097 static int fimc_pipeline_validate(struct fimc_dev *fimc) 1098 { 1099 struct v4l2_subdev_format sink_fmt = { 1100 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 1101 }; 1102 struct v4l2_subdev_format src_fmt = { 1103 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 1104 }; 1105 struct fimc_vid_cap *vc = &fimc->vid_cap; 1106 struct v4l2_subdev *sd = &vc->subdev; 1107 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe); 1108 struct media_pad *sink_pad, *src_pad; 1109 int i, ret; 1110 1111 while (1) { 1112 /* 1113 * Find current entity sink pad and any remote sink pad linked 1114 * to it. We stop if there is no sink pad in current entity or 1115 * it is not linked to any other remote entity. 1116 */ 1117 src_pad = NULL; 1118 1119 for (i = 0; i < sd->entity.num_pads; i++) { 1120 struct media_pad *p = &sd->entity.pads[i]; 1121 1122 if (p->flags & MEDIA_PAD_FL_SINK) { 1123 sink_pad = p; 1124 src_pad = media_pad_remote_pad_first(sink_pad); 1125 if (src_pad) 1126 break; 1127 } 1128 } 1129 1130 if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity)) 1131 break; 1132 1133 /* Don't call FIMC subdev operation to avoid nested locking */ 1134 if (sd == &vc->subdev) { 1135 const struct fimc_frame *ff = &vc->ctx->s_frame; 1136 sink_fmt.format.width = ff->f_width; 1137 sink_fmt.format.height = ff->f_height; 1138 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0; 1139 } else { 1140 sink_fmt.pad = sink_pad->index; 1141 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); 1142 if (ret < 0 && ret != -ENOIOCTLCMD) 1143 return -EPIPE; 1144 } 1145 1146 /* Retrieve format at the source pad */ 1147 sd = media_entity_to_v4l2_subdev(src_pad->entity); 1148 src_fmt.pad = src_pad->index; 1149 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); 1150 if (ret < 0 && ret != -ENOIOCTLCMD) 1151 return -EPIPE; 1152 1153 if (src_fmt.format.width != sink_fmt.format.width || 1154 src_fmt.format.height != sink_fmt.format.height || 1155 src_fmt.format.code != sink_fmt.format.code) 1156 return -EPIPE; 1157 1158 if (sd == p->subdevs[IDX_SENSOR] && 1159 fimc_user_defined_mbus_fmt(src_fmt.format.code)) { 1160 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES]; 1161 const struct fimc_frame *frame = &vc->ctx->d_frame; 1162 unsigned int i; 1163 1164 ret = fimc_get_sensor_frame_desc(sd, plane_fmt, 1165 frame->fmt->memplanes, 1166 false); 1167 if (ret < 0) 1168 return -EPIPE; 1169 1170 for (i = 0; i < frame->fmt->memplanes; i++) 1171 if (frame->payload[i] < plane_fmt[i].sizeimage) 1172 return -EPIPE; 1173 } 1174 } 1175 return 0; 1176 } 1177 1178 static int fimc_cap_streamon(struct file *file, void *priv, 1179 enum v4l2_buf_type type) 1180 { 1181 struct fimc_dev *fimc = video_drvdata(file); 1182 struct fimc_vid_cap *vc = &fimc->vid_cap; 1183 struct fimc_source_info *si = NULL; 1184 struct v4l2_subdev *sd; 1185 int ret; 1186 1187 if (fimc_capture_active(fimc)) 1188 return -EBUSY; 1189 1190 ret = video_device_pipeline_start(&vc->ve.vdev, &vc->ve.pipe->mp); 1191 if (ret < 0) 1192 return ret; 1193 1194 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR); 1195 if (sd) 1196 si = v4l2_get_subdev_hostdata(sd); 1197 1198 if (si == NULL) { 1199 ret = -EPIPE; 1200 goto err_p_stop; 1201 } 1202 /* 1203 * Save configuration data related to currently attached image 1204 * sensor or other data source, e.g. FIMC-IS. 1205 */ 1206 vc->source_config = *si; 1207 1208 if (vc->input == GRP_ID_FIMC_IS) 1209 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK; 1210 1211 if (vc->user_subdev_api) { 1212 ret = fimc_pipeline_validate(fimc); 1213 if (ret < 0) 1214 goto err_p_stop; 1215 } 1216 1217 ret = vb2_ioctl_streamon(file, priv, type); 1218 if (!ret) { 1219 vc->streaming = true; 1220 return ret; 1221 } 1222 1223 err_p_stop: 1224 video_device_pipeline_stop(&vc->ve.vdev); 1225 return ret; 1226 } 1227 1228 static int fimc_cap_streamoff(struct file *file, void *priv, 1229 enum v4l2_buf_type type) 1230 { 1231 struct fimc_dev *fimc = video_drvdata(file); 1232 struct fimc_vid_cap *vc = &fimc->vid_cap; 1233 int ret; 1234 1235 ret = vb2_ioctl_streamoff(file, priv, type); 1236 if (ret < 0) 1237 return ret; 1238 1239 if (vc->streaming) { 1240 video_device_pipeline_stop(&vc->ve.vdev); 1241 vc->streaming = false; 1242 } 1243 1244 return 0; 1245 } 1246 1247 static int fimc_cap_reqbufs(struct file *file, void *priv, 1248 struct v4l2_requestbuffers *reqbufs) 1249 { 1250 struct fimc_dev *fimc = video_drvdata(file); 1251 int ret; 1252 1253 ret = vb2_ioctl_reqbufs(file, priv, reqbufs); 1254 1255 if (!ret) 1256 fimc->vid_cap.reqbufs_count = reqbufs->count; 1257 1258 return ret; 1259 } 1260 1261 static int fimc_cap_g_selection(struct file *file, void *fh, 1262 struct v4l2_selection *s) 1263 { 1264 struct fimc_dev *fimc = video_drvdata(file); 1265 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1266 const struct fimc_frame *f = &ctx->s_frame; 1267 1268 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 1269 return -EINVAL; 1270 1271 switch (s->target) { 1272 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 1273 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 1274 f = &ctx->d_frame; 1275 fallthrough; 1276 case V4L2_SEL_TGT_CROP_BOUNDS: 1277 case V4L2_SEL_TGT_CROP_DEFAULT: 1278 s->r.left = 0; 1279 s->r.top = 0; 1280 s->r.width = f->o_width; 1281 s->r.height = f->o_height; 1282 return 0; 1283 1284 case V4L2_SEL_TGT_COMPOSE: 1285 f = &ctx->d_frame; 1286 fallthrough; 1287 case V4L2_SEL_TGT_CROP: 1288 s->r.left = f->offs_h; 1289 s->r.top = f->offs_v; 1290 s->r.width = f->width; 1291 s->r.height = f->height; 1292 return 0; 1293 } 1294 1295 return -EINVAL; 1296 } 1297 1298 static int fimc_cap_s_selection(struct file *file, void *fh, 1299 struct v4l2_selection *s) 1300 { 1301 struct fimc_dev *fimc = video_drvdata(file); 1302 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1303 struct v4l2_rect rect = s->r; 1304 struct fimc_frame *f; 1305 unsigned long flags; 1306 1307 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 1308 return -EINVAL; 1309 1310 if (s->target == V4L2_SEL_TGT_COMPOSE) 1311 f = &ctx->d_frame; 1312 else if (s->target == V4L2_SEL_TGT_CROP) 1313 f = &ctx->s_frame; 1314 else 1315 return -EINVAL; 1316 1317 fimc_capture_try_selection(ctx, &rect, s->target); 1318 1319 if (s->flags & V4L2_SEL_FLAG_LE && 1320 !v4l2_rect_enclosed(&rect, &s->r)) 1321 return -ERANGE; 1322 1323 if (s->flags & V4L2_SEL_FLAG_GE && 1324 !v4l2_rect_enclosed(&s->r, &rect)) 1325 return -ERANGE; 1326 1327 s->r = rect; 1328 spin_lock_irqsave(&fimc->slock, flags); 1329 set_frame_crop(f, s->r.left, s->r.top, s->r.width, 1330 s->r.height); 1331 spin_unlock_irqrestore(&fimc->slock, flags); 1332 1333 set_bit(ST_CAPT_APPLY_CFG, &fimc->state); 1334 return 0; 1335 } 1336 1337 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = { 1338 .vidioc_querycap = fimc_cap_querycap, 1339 1340 .vidioc_enum_fmt_vid_cap = fimc_cap_enum_fmt, 1341 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane, 1342 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane, 1343 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane, 1344 1345 .vidioc_reqbufs = fimc_cap_reqbufs, 1346 .vidioc_querybuf = vb2_ioctl_querybuf, 1347 .vidioc_qbuf = vb2_ioctl_qbuf, 1348 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1349 .vidioc_expbuf = vb2_ioctl_expbuf, 1350 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1351 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1352 1353 .vidioc_streamon = fimc_cap_streamon, 1354 .vidioc_streamoff = fimc_cap_streamoff, 1355 1356 .vidioc_g_selection = fimc_cap_g_selection, 1357 .vidioc_s_selection = fimc_cap_s_selection, 1358 1359 .vidioc_enum_input = fimc_cap_enum_input, 1360 .vidioc_s_input = fimc_cap_s_input, 1361 .vidioc_g_input = fimc_cap_g_input, 1362 }; 1363 1364 /* Capture subdev media entity operations */ 1365 static int fimc_link_setup(struct media_entity *entity, 1366 const struct media_pad *local, 1367 const struct media_pad *remote, u32 flags) 1368 { 1369 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); 1370 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1371 struct fimc_vid_cap *vc = &fimc->vid_cap; 1372 struct v4l2_subdev *sensor; 1373 1374 if (!is_media_entity_v4l2_subdev(remote->entity)) 1375 return -EINVAL; 1376 1377 if (WARN_ON(fimc == NULL)) 1378 return 0; 1379 1380 dbg("%s --> %s, flags: 0x%x. input: 0x%x", 1381 local->entity->name, remote->entity->name, flags, 1382 fimc->vid_cap.input); 1383 1384 if (!(flags & MEDIA_LNK_FL_ENABLED)) { 1385 fimc->vid_cap.input = 0; 1386 return 0; 1387 } 1388 1389 if (vc->input != 0) 1390 return -EBUSY; 1391 1392 vc->input = sd->grp_id; 1393 1394 if (vc->user_subdev_api) 1395 return 0; 1396 1397 /* Inherit V4L2 controls from the image sensor subdev. */ 1398 sensor = fimc_find_remote_sensor(&vc->subdev.entity); 1399 if (sensor == NULL) 1400 return 0; 1401 1402 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler, 1403 sensor->ctrl_handler, NULL, true); 1404 } 1405 1406 static const struct media_entity_operations fimc_sd_media_ops = { 1407 .link_setup = fimc_link_setup, 1408 }; 1409 1410 /** 1411 * fimc_sensor_notify - v4l2_device notification from a sensor subdev 1412 * @sd: pointer to a subdev generating the notification 1413 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY 1414 * @arg: pointer to an u32 type integer that stores the frame payload value 1415 * 1416 * The End Of Frame notification sent by sensor subdev in its still capture 1417 * mode. If there is only a single VSYNC generated by the sensor at the 1418 * beginning of a frame transmission, FIMC does not issue the LastIrq 1419 * (end of frame) interrupt. And this notification is used to complete the 1420 * frame capture and returning a buffer to user-space. Subdev drivers should 1421 * call this notification from their last 'End of frame capture' interrupt. 1422 */ 1423 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification, 1424 void *arg) 1425 { 1426 struct fimc_source_info *si; 1427 struct fimc_vid_buffer *buf; 1428 struct fimc_md *fmd; 1429 struct fimc_dev *fimc; 1430 unsigned long flags; 1431 1432 if (sd == NULL) 1433 return; 1434 1435 si = v4l2_get_subdev_hostdata(sd); 1436 fmd = entity_to_fimc_mdev(&sd->entity); 1437 1438 spin_lock_irqsave(&fmd->slock, flags); 1439 1440 fimc = si ? source_to_sensor_info(si)->host : NULL; 1441 1442 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY && 1443 test_bit(ST_CAPT_PEND, &fimc->state)) { 1444 unsigned long irq_flags; 1445 spin_lock_irqsave(&fimc->slock, irq_flags); 1446 if (!list_empty(&fimc->vid_cap.active_buf_q)) { 1447 buf = list_entry(fimc->vid_cap.active_buf_q.next, 1448 struct fimc_vid_buffer, list); 1449 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, 1450 *((u32 *)arg)); 1451 } 1452 fimc_capture_irq_handler(fimc, 1); 1453 fimc_deactivate_capture(fimc); 1454 spin_unlock_irqrestore(&fimc->slock, irq_flags); 1455 } 1456 spin_unlock_irqrestore(&fmd->slock, flags); 1457 } 1458 1459 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd, 1460 struct v4l2_subdev_state *sd_state, 1461 struct v4l2_subdev_mbus_code_enum *code) 1462 { 1463 const struct fimc_fmt *fmt; 1464 1465 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index); 1466 if (!fmt) 1467 return -EINVAL; 1468 code->code = fmt->mbus_code; 1469 return 0; 1470 } 1471 1472 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd, 1473 struct v4l2_subdev_state *sd_state, 1474 struct v4l2_subdev_format *fmt) 1475 { 1476 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1477 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1478 const struct fimc_frame *ff = &ctx->s_frame; 1479 struct v4l2_mbus_framefmt *mf; 1480 1481 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1482 mf = v4l2_subdev_state_get_format(sd_state, fmt->pad); 1483 fmt->format = *mf; 1484 return 0; 1485 } 1486 1487 mf = &fmt->format; 1488 mutex_lock(&fimc->lock); 1489 1490 switch (fmt->pad) { 1491 case FIMC_SD_PAD_SOURCE: 1492 if (!WARN_ON(ff->fmt == NULL)) 1493 mf->code = ff->fmt->mbus_code; 1494 /* Sink pads crop rectangle size */ 1495 mf->width = ff->width; 1496 mf->height = ff->height; 1497 break; 1498 case FIMC_SD_PAD_SINK_FIFO: 1499 *mf = fimc->vid_cap.wb_fmt; 1500 break; 1501 case FIMC_SD_PAD_SINK_CAM: 1502 default: 1503 *mf = fimc->vid_cap.ci_fmt; 1504 break; 1505 } 1506 1507 mutex_unlock(&fimc->lock); 1508 mf->colorspace = V4L2_COLORSPACE_JPEG; 1509 1510 return 0; 1511 } 1512 1513 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd, 1514 struct v4l2_subdev_state *sd_state, 1515 struct v4l2_subdev_format *fmt) 1516 { 1517 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1518 struct v4l2_mbus_framefmt *mf = &fmt->format; 1519 struct fimc_vid_cap *vc = &fimc->vid_cap; 1520 struct fimc_ctx *ctx = vc->ctx; 1521 struct fimc_frame *ff; 1522 const struct fimc_fmt *ffmt; 1523 1524 dbg("pad%d: code: 0x%x, %dx%d", 1525 fmt->pad, mf->code, mf->width, mf->height); 1526 1527 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq)) 1528 return -EBUSY; 1529 1530 mutex_lock(&fimc->lock); 1531 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height, 1532 &mf->code, NULL, fmt->pad); 1533 mutex_unlock(&fimc->lock); 1534 mf->colorspace = V4L2_COLORSPACE_JPEG; 1535 1536 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1537 mf = v4l2_subdev_state_get_format(sd_state, fmt->pad); 1538 *mf = fmt->format; 1539 return 0; 1540 } 1541 /* There must be a bug in the driver if this happens */ 1542 if (WARN_ON(ffmt == NULL)) 1543 return -EINVAL; 1544 1545 /* Update RGB Alpha control state and value range */ 1546 fimc_alpha_ctrl_update(ctx); 1547 1548 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color); 1549 if (fmt->pad == FIMC_SD_PAD_SOURCE) { 1550 ff = &ctx->d_frame; 1551 /* Sink pads crop rectangle size */ 1552 mf->width = ctx->s_frame.width; 1553 mf->height = ctx->s_frame.height; 1554 } else { 1555 ff = &ctx->s_frame; 1556 } 1557 1558 mutex_lock(&fimc->lock); 1559 set_frame_bounds(ff, mf->width, mf->height); 1560 1561 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO) 1562 vc->wb_fmt = *mf; 1563 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM) 1564 vc->ci_fmt = *mf; 1565 1566 ff->fmt = ffmt; 1567 1568 /* Reset the crop rectangle if required. */ 1569 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE))) 1570 set_frame_crop(ff, 0, 0, mf->width, mf->height); 1571 1572 if (fmt->pad != FIMC_SD_PAD_SOURCE) 1573 ctx->state &= ~FIMC_COMPOSE; 1574 1575 mutex_unlock(&fimc->lock); 1576 return 0; 1577 } 1578 1579 static int fimc_subdev_get_selection(struct v4l2_subdev *sd, 1580 struct v4l2_subdev_state *sd_state, 1581 struct v4l2_subdev_selection *sel) 1582 { 1583 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1584 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1585 const struct fimc_frame *f = &ctx->s_frame; 1586 struct v4l2_rect *r = &sel->r; 1587 struct v4l2_rect *try_sel; 1588 1589 if (sel->pad == FIMC_SD_PAD_SOURCE) 1590 return -EINVAL; 1591 1592 mutex_lock(&fimc->lock); 1593 1594 switch (sel->target) { 1595 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 1596 f = &ctx->d_frame; 1597 fallthrough; 1598 case V4L2_SEL_TGT_CROP_BOUNDS: 1599 r->width = f->o_width; 1600 r->height = f->o_height; 1601 r->left = 0; 1602 r->top = 0; 1603 mutex_unlock(&fimc->lock); 1604 return 0; 1605 1606 case V4L2_SEL_TGT_CROP: 1607 try_sel = v4l2_subdev_state_get_crop(sd_state, sel->pad); 1608 break; 1609 case V4L2_SEL_TGT_COMPOSE: 1610 try_sel = v4l2_subdev_state_get_compose(sd_state, sel->pad); 1611 f = &ctx->d_frame; 1612 break; 1613 default: 1614 mutex_unlock(&fimc->lock); 1615 return -EINVAL; 1616 } 1617 1618 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { 1619 sel->r = *try_sel; 1620 } else { 1621 r->left = f->offs_h; 1622 r->top = f->offs_v; 1623 r->width = f->width; 1624 r->height = f->height; 1625 } 1626 1627 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d", 1628 sel->pad, r->left, r->top, r->width, r->height, 1629 f->f_width, f->f_height); 1630 1631 mutex_unlock(&fimc->lock); 1632 return 0; 1633 } 1634 1635 static int fimc_subdev_set_selection(struct v4l2_subdev *sd, 1636 struct v4l2_subdev_state *sd_state, 1637 struct v4l2_subdev_selection *sel) 1638 { 1639 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1640 struct fimc_ctx *ctx = fimc->vid_cap.ctx; 1641 struct fimc_frame *f = &ctx->s_frame; 1642 struct v4l2_rect *r = &sel->r; 1643 struct v4l2_rect *try_sel; 1644 unsigned long flags; 1645 1646 if (sel->pad == FIMC_SD_PAD_SOURCE) 1647 return -EINVAL; 1648 1649 mutex_lock(&fimc->lock); 1650 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP); 1651 1652 switch (sel->target) { 1653 case V4L2_SEL_TGT_CROP: 1654 try_sel = v4l2_subdev_state_get_crop(sd_state, sel->pad); 1655 break; 1656 case V4L2_SEL_TGT_COMPOSE: 1657 try_sel = v4l2_subdev_state_get_compose(sd_state, sel->pad); 1658 f = &ctx->d_frame; 1659 break; 1660 default: 1661 mutex_unlock(&fimc->lock); 1662 return -EINVAL; 1663 } 1664 1665 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { 1666 *try_sel = sel->r; 1667 } else { 1668 spin_lock_irqsave(&fimc->slock, flags); 1669 set_frame_crop(f, r->left, r->top, r->width, r->height); 1670 set_bit(ST_CAPT_APPLY_CFG, &fimc->state); 1671 if (sel->target == V4L2_SEL_TGT_COMPOSE) 1672 ctx->state |= FIMC_COMPOSE; 1673 spin_unlock_irqrestore(&fimc->slock, flags); 1674 } 1675 1676 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top, 1677 r->width, r->height); 1678 1679 mutex_unlock(&fimc->lock); 1680 return 0; 1681 } 1682 1683 static const struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = { 1684 .enum_mbus_code = fimc_subdev_enum_mbus_code, 1685 .get_selection = fimc_subdev_get_selection, 1686 .set_selection = fimc_subdev_set_selection, 1687 .get_fmt = fimc_subdev_get_fmt, 1688 .set_fmt = fimc_subdev_set_fmt, 1689 }; 1690 1691 static const struct v4l2_subdev_ops fimc_subdev_ops = { 1692 .pad = &fimc_subdev_pad_ops, 1693 }; 1694 1695 /* Set default format at the sensor and host interface */ 1696 static int fimc_capture_set_default_format(struct fimc_dev *fimc) 1697 { 1698 struct v4l2_format fmt = { 1699 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, 1700 .fmt.pix_mp = { 1701 .width = FIMC_DEFAULT_WIDTH, 1702 .height = FIMC_DEFAULT_HEIGHT, 1703 .pixelformat = V4L2_PIX_FMT_YUYV, 1704 .field = V4L2_FIELD_NONE, 1705 .colorspace = V4L2_COLORSPACE_JPEG, 1706 }, 1707 }; 1708 1709 return __fimc_capture_set_format(fimc, &fmt); 1710 } 1711 1712 /* fimc->lock must be already initialized */ 1713 static int fimc_register_capture_device(struct fimc_dev *fimc, 1714 struct v4l2_device *v4l2_dev) 1715 { 1716 struct video_device *vfd = &fimc->vid_cap.ve.vdev; 1717 struct vb2_queue *q = &fimc->vid_cap.vbq; 1718 struct fimc_vid_cap *vid_cap; 1719 const struct fimc_fmt *fmt; 1720 struct fimc_ctx *ctx; 1721 int ret = -ENOMEM; 1722 1723 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 1724 if (!ctx) 1725 return -ENOMEM; 1726 1727 ctx->fimc_dev = fimc; 1728 ctx->in_path = FIMC_IO_CAMERA; 1729 ctx->out_path = FIMC_IO_DMA; 1730 ctx->state = FIMC_CTX_CAP; 1731 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0); 1732 ctx->d_frame.fmt = ctx->s_frame.fmt; 1733 1734 memset(vfd, 0, sizeof(*vfd)); 1735 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id); 1736 1737 vfd->fops = &fimc_capture_fops; 1738 vfd->ioctl_ops = &fimc_capture_ioctl_ops; 1739 vfd->v4l2_dev = v4l2_dev; 1740 vfd->minor = -1; 1741 vfd->release = video_device_release_empty; 1742 vfd->queue = q; 1743 vfd->lock = &fimc->lock; 1744 vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE; 1745 1746 video_set_drvdata(vfd, fimc); 1747 vid_cap = &fimc->vid_cap; 1748 vid_cap->active_buf_cnt = 0; 1749 vid_cap->reqbufs_count = 0; 1750 vid_cap->ctx = ctx; 1751 1752 INIT_LIST_HEAD(&vid_cap->pending_buf_q); 1753 INIT_LIST_HEAD(&vid_cap->active_buf_q); 1754 1755 memset(q, 0, sizeof(*q)); 1756 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; 1757 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1758 q->drv_priv = ctx; 1759 q->ops = &fimc_capture_qops; 1760 q->mem_ops = &vb2_dma_contig_memops; 1761 q->buf_struct_size = sizeof(struct fimc_vid_buffer); 1762 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1763 q->lock = &fimc->lock; 1764 q->dev = &fimc->pdev->dev; 1765 1766 ret = vb2_queue_init(q); 1767 if (ret) 1768 goto err_free_ctx; 1769 1770 /* Default format configuration */ 1771 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0); 1772 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH; 1773 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT; 1774 vid_cap->ci_fmt.code = fmt->mbus_code; 1775 1776 ctx->s_frame.width = FIMC_DEFAULT_WIDTH; 1777 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT; 1778 ctx->s_frame.fmt = fmt; 1779 1780 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0); 1781 vid_cap->wb_fmt = vid_cap->ci_fmt; 1782 vid_cap->wb_fmt.code = fmt->mbus_code; 1783 1784 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK; 1785 vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER; 1786 ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad); 1787 if (ret) 1788 goto err_free_ctx; 1789 1790 ret = fimc_ctrls_create(ctx); 1791 if (ret) 1792 goto err_me_cleanup; 1793 1794 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1); 1795 if (ret) 1796 goto err_ctrl_free; 1797 1798 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", 1799 vfd->name, video_device_node_name(vfd)); 1800 1801 vfd->ctrl_handler = &ctx->ctrls.handler; 1802 return 0; 1803 1804 err_ctrl_free: 1805 fimc_ctrls_delete(ctx); 1806 err_me_cleanup: 1807 media_entity_cleanup(&vfd->entity); 1808 err_free_ctx: 1809 kfree(ctx); 1810 return ret; 1811 } 1812 1813 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd) 1814 { 1815 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1816 int ret; 1817 1818 if (fimc == NULL) 1819 return -ENXIO; 1820 1821 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev); 1822 if (ret) 1823 return ret; 1824 1825 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd); 1826 1827 ret = fimc_register_capture_device(fimc, sd->v4l2_dev); 1828 if (ret) { 1829 fimc_unregister_m2m_device(fimc); 1830 fimc->vid_cap.ve.pipe = NULL; 1831 } 1832 1833 return ret; 1834 } 1835 1836 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd) 1837 { 1838 struct fimc_dev *fimc = v4l2_get_subdevdata(sd); 1839 struct video_device *vdev; 1840 1841 if (fimc == NULL) 1842 return; 1843 1844 mutex_lock(&fimc->lock); 1845 1846 fimc_unregister_m2m_device(fimc); 1847 vdev = &fimc->vid_cap.ve.vdev; 1848 1849 if (video_is_registered(vdev)) { 1850 video_unregister_device(vdev); 1851 media_entity_cleanup(&vdev->entity); 1852 fimc_ctrls_delete(fimc->vid_cap.ctx); 1853 fimc->vid_cap.ve.pipe = NULL; 1854 } 1855 kfree(fimc->vid_cap.ctx); 1856 fimc->vid_cap.ctx = NULL; 1857 1858 mutex_unlock(&fimc->lock); 1859 } 1860 1861 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = { 1862 .registered = fimc_capture_subdev_registered, 1863 .unregistered = fimc_capture_subdev_unregistered, 1864 }; 1865 1866 int fimc_initialize_capture_subdev(struct fimc_dev *fimc) 1867 { 1868 struct v4l2_subdev *sd = &fimc->vid_cap.subdev; 1869 int ret; 1870 1871 v4l2_subdev_init(sd, &fimc_subdev_ops); 1872 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1873 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id); 1874 1875 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK; 1876 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK; 1877 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; 1878 ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM, 1879 fimc->vid_cap.sd_pads); 1880 if (ret) 1881 return ret; 1882 1883 sd->entity.ops = &fimc_sd_media_ops; 1884 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER; 1885 sd->internal_ops = &fimc_capture_sd_internal_ops; 1886 v4l2_set_subdevdata(sd, fimc); 1887 return 0; 1888 } 1889 1890 void fimc_unregister_capture_subdev(struct fimc_dev *fimc) 1891 { 1892 struct v4l2_subdev *sd = &fimc->vid_cap.subdev; 1893 1894 v4l2_device_unregister_subdev(sd); 1895 media_entity_cleanup(&sd->entity); 1896 v4l2_set_subdevdata(sd, NULL); 1897 } 1898