fimc-capture.c

   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
  33static 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 */
  84static 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
 126static 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 */
 153static 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
 178void 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);
 248done:
 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
 259static 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
 290static 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
 301int 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
 311static void buffer_queue(struct vb2_buffer *vb);
 312
 313int 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
 340static 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
 376static 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
 400static 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
 454static const struct vb2_ops fimc_capture_qops = {
 455	.queue_setup		= queue_setup,
 456	.buf_prepare		= buffer_prepare,
 457	.buf_queue		= buffer_queue,
 458	.start_streaming	= start_streaming,
 459	.stop_streaming		= stop_streaming,
 460};
 461
 462static int fimc_capture_set_default_format(struct fimc_dev *fimc);
 463
 464static int fimc_capture_open(struct file *file)
 465{
 466	struct fimc_dev *fimc = video_drvdata(file);
 467	struct fimc_vid_cap *vc = &fimc->vid_cap;
 468	struct exynos_video_entity *ve = &vc->ve;
 469	int ret = -EBUSY;
 470
 471	dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
 472
 473	mutex_lock(&fimc->lock);
 474
 475	if (fimc_m2m_active(fimc))
 476		goto unlock;
 477
 478	set_bit(ST_CAPT_BUSY, &fimc->state);
 479	ret = pm_runtime_resume_and_get(&fimc->pdev->dev);
 480	if (ret < 0)
 481		goto unlock;
 482
 483	ret = v4l2_fh_open(file);
 484	if (ret) {
 485		pm_runtime_put_sync(&fimc->pdev->dev);
 486		goto unlock;
 487	}
 488
 489	if (v4l2_fh_is_singular_file(file)) {
 490		fimc_md_graph_lock(ve);
 491
 492		ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true);
 493
 494		if (ret == 0)
 495			ve->vdev.entity.use_count++;
 496
 497		fimc_md_graph_unlock(ve);
 498
 499		if (ret == 0)
 500			ret = fimc_capture_set_default_format(fimc);
 501
 502		if (ret < 0) {
 503			clear_bit(ST_CAPT_BUSY, &fimc->state);
 504			pm_runtime_put_sync(&fimc->pdev->dev);
 505			v4l2_fh_release(file);
 506		}
 507	}
 508unlock:
 509	mutex_unlock(&fimc->lock);
 510	return ret;
 511}
 512
 513static int fimc_capture_release(struct file *file)
 514{
 515	struct fimc_dev *fimc = video_drvdata(file);
 516	struct fimc_vid_cap *vc = &fimc->vid_cap;
 517	bool close = v4l2_fh_is_singular_file(file);
 518	int ret;
 519
 520	dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
 521
 522	mutex_lock(&fimc->lock);
 523
 524	if (close && vc->streaming) {
 525		video_device_pipeline_stop(&vc->ve.vdev);
 526		vc->streaming = false;
 527	}
 528
 529	ret = _vb2_fop_release(file, NULL);
 530
 531	if (close) {
 532		clear_bit(ST_CAPT_BUSY, &fimc->state);
 533		fimc_pipeline_call(&vc->ve, close);
 534		clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
 535
 536		fimc_md_graph_lock(&vc->ve);
 537		vc->ve.vdev.entity.use_count--;
 538		fimc_md_graph_unlock(&vc->ve);
 539	}
 540
 541	pm_runtime_put_sync(&fimc->pdev->dev);
 542	mutex_unlock(&fimc->lock);
 543
 544	return ret;
 545}
 546
 547static const struct v4l2_file_operations fimc_capture_fops = {
 548	.owner		= THIS_MODULE,
 549	.open		= fimc_capture_open,
 550	.release	= fimc_capture_release,
 551	.poll		= vb2_fop_poll,
 552	.unlocked_ioctl	= video_ioctl2,
 553	.mmap		= vb2_fop_mmap,
 554};
 555
 556/*
 557 * Format and crop negotiation helpers
 558 */
 559
 560static const struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
 561						      u32 *width, u32 *height,
 562						      u32 *code, u32 *fourcc, int pad)
 563{
 564	bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
 565	struct fimc_dev *fimc = ctx->fimc_dev;
 566	const struct fimc_variant *var = fimc->variant;
 567	const struct fimc_pix_limit *pl = var->pix_limit;
 568	const struct fimc_frame *dst = &ctx->d_frame;
 569	u32 depth, min_w, max_w, min_h, align_h = 3;
 570	const struct fimc_fmt *ffmt;
 571	u32 mask = FMT_FLAGS_CAM;
 572
 573	/* Conversion from/to JPEG or User Defined format is not supported */
 574	if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
 575	    fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
 576		*code = ctx->s_frame.fmt->mbus_code;
 577
 578	if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE)
 579		mask |= FMT_FLAGS_M2M;
 580
 581	if (pad == FIMC_SD_PAD_SINK_FIFO)
 582		mask = FMT_FLAGS_WRITEBACK;
 583
 584	ffmt = fimc_find_format(fourcc, code, mask, 0);
 585	if (WARN_ON(!ffmt))
 586		return NULL;
 587
 588	if (code)
 589		*code = ffmt->mbus_code;
 590	if (fourcc)
 591		*fourcc = ffmt->fourcc;
 592
 593	if (pad != FIMC_SD_PAD_SOURCE) {
 594		max_w = fimc_fmt_is_user_defined(ffmt->color) ?
 595			pl->scaler_dis_w : pl->scaler_en_w;
 596		/* Apply the camera input interface pixel constraints */
 597		v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
 598				      height, max_t(u32, *height, 32),
 599				      FIMC_CAMIF_MAX_HEIGHT,
 600				      fimc_fmt_is_user_defined(ffmt->color) ?
 601				      3 : 1,
 602				      0);
 603		return ffmt;
 604	}
 605	/* Can't scale or crop in transparent (JPEG) transfer mode */
 606	if (fimc_fmt_is_user_defined(ffmt->color)) {
 607		*width  = ctx->s_frame.f_width;
 608		*height = ctx->s_frame.f_height;
 609		return ffmt;
 610	}
 611	/* Apply the scaler and the output DMA constraints */
 612	max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
 613	if (ctx->state & FIMC_COMPOSE) {
 614		min_w = dst->offs_h + dst->width;
 615		min_h = dst->offs_v + dst->height;
 616	} else {
 617		min_w = var->min_out_pixsize;
 618		min_h = var->min_out_pixsize;
 619	}
 620	if (var->min_vsize_align == 1 && !rotation)
 621		align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
 622
 623	depth = fimc_get_format_depth(ffmt);
 624	v4l_bound_align_image(width, min_w, max_w,
 625			      ffs(var->min_out_pixsize) - 1,
 626			      height, min_h, FIMC_CAMIF_MAX_HEIGHT,
 627			      align_h,
 628			      64/(ALIGN(depth, 8)));
 629
 630	dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
 631	    pad, code ? *code : 0, *width, *height,
 632	    dst->f_width, dst->f_height);
 633
 634	return ffmt;
 635}
 636
 637static void fimc_capture_try_selection(struct fimc_ctx *ctx,
 638				       struct v4l2_rect *r,
 639				       int target)
 640{
 641	bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
 642	struct fimc_dev *fimc = ctx->fimc_dev;
 643	const struct fimc_variant *var = fimc->variant;
 644	const struct fimc_pix_limit *pl = var->pix_limit;
 645	const struct fimc_frame *sink = &ctx->s_frame;
 646	u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
 647	u32 align_sz = 0, align_h = 4;
 648	u32 max_sc_h, max_sc_v;
 649
 650	/* In JPEG transparent transfer mode cropping is not supported */
 651	if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
 652		r->width  = sink->f_width;
 653		r->height = sink->f_height;
 654		r->left   = r->top = 0;
 655		return;
 656	}
 657	if (target == V4L2_SEL_TGT_COMPOSE) {
 658		u32 tmp_min_h = ffs(sink->width) - 3;
 659		u32 tmp_min_v = ffs(sink->height) - 1;
 660
 661		if (ctx->rotation != 90 && ctx->rotation != 270)
 662			align_h = 1;
 663		max_sc_h = min(SCALER_MAX_HRATIO, 1 << tmp_min_h);
 664		max_sc_v = min(SCALER_MAX_VRATIO, 1 << tmp_min_v);
 665		min_sz = var->min_out_pixsize;
 666	} else {
 667		u32 depth = fimc_get_format_depth(sink->fmt);
 668		align_sz = 64/ALIGN(depth, 8);
 669		min_sz = var->min_inp_pixsize;
 670		min_w = min_h = min_sz;
 671		max_sc_h = max_sc_v = 1;
 672	}
 673	/*
 674	 * For the compose rectangle the following constraints must be met:
 675	 * - it must fit in the sink pad format rectangle (f_width/f_height);
 676	 * - maximum downscaling ratio is 64;
 677	 * - maximum crop size depends if the rotator is used or not;
 678	 * - the sink pad format width/height must be 4 multiple of the
 679	 *   prescaler ratios determined by sink pad size and source pad crop,
 680	 *   the prescaler ratio is returned by fimc_get_scaler_factor().
 681	 */
 682	max_w = min_t(u32,
 683		      rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
 684		      rotate ? sink->f_height : sink->f_width);
 685	max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
 686
 687	if (target == V4L2_SEL_TGT_COMPOSE) {
 688		min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
 689		min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
 690		if (rotate) {
 691			swap(max_sc_h, max_sc_v);
 692			swap(min_w, min_h);
 693		}
 694	}
 695	v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
 696			      &r->height, min_h, max_h, align_h,
 697			      align_sz);
 698	/* Adjust left/top if crop/compose rectangle is out of bounds */
 699	r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
 700	r->top  = clamp_t(u32, r->top, 0, sink->f_height - r->height);
 701	r->left = round_down(r->left, var->hor_offs_align);
 702
 703	dbg("target %#x: (%d,%d)/%ux%u, sink fmt: %dx%d",
 704	    target, r->left, r->top, r->width, r->height,
 705	    sink->f_width, sink->f_height);
 706}
 707
 708/*
 709 * The video node ioctl operations
 710 */
 711static int fimc_cap_querycap(struct file *file, void *priv,
 712					struct v4l2_capability *cap)
 713{
 714	struct fimc_dev *fimc = video_drvdata(file);
 715
 716	__fimc_vidioc_querycap(&fimc->pdev->dev, cap);
 717	return 0;
 718}
 719
 720static int fimc_cap_enum_fmt(struct file *file, void *priv,
 721			     struct v4l2_fmtdesc *f)
 722{
 723	const struct fimc_fmt *fmt;
 724
 725	fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
 726			       f->index);
 727	if (!fmt)
 728		return -EINVAL;
 729	f->pixelformat = fmt->fourcc;
 730	return 0;
 731}
 732
 733static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
 734{
 735	struct media_pad *pad = &me->pads[0];
 736
 737	while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
 738		pad = media_pad_remote_pad_first(pad);
 739		if (!pad)
 740			break;
 741		me = pad->entity;
 742		pad = &me->pads[0];
 743	}
 744
 745	return me;
 746}
 747
 748/**
 749 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
 750 *                            elements
 751 * @ctx: FIMC capture context
 752 * @tfmt: media bus format to try/set on subdevs
 753 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
 754 * @set: true to set format on subdevs, false to try only
 755 */
 756static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
 757				    struct v4l2_mbus_framefmt *tfmt,
 758				    const struct fimc_fmt **fmt_id,
 759				    bool set)
 760{
 761	struct fimc_dev *fimc = ctx->fimc_dev;
 762	struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe);
 763	struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
 764	struct v4l2_subdev_format sfmt = {
 765		.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE
 766		       : V4L2_SUBDEV_FORMAT_TRY,
 767	};
 768	struct v4l2_mbus_framefmt *mf = &sfmt.format;
 769	const struct fimc_fmt *ffmt;
 770	struct media_entity *me;
 771	struct media_pad *pad;
 772	int ret, i = 1;
 773	u32 fcc;
 774
 775	if (WARN_ON(!sd || !tfmt))
 776		return -EINVAL;
 777
 778	sfmt.format = *tfmt;
 779
 780	me = fimc_pipeline_get_head(&sd->entity);
 781
 782	while (1) {
 783		ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
 784					FMT_FLAGS_CAM, i++);
 785		if (ffmt == NULL) {
 786			/*
 787			 * Notify user-space if common pixel code for
 788			 * host and sensor does not exist.
 789			 */
 790			return -EINVAL;
 791		}
 792		mf->code = tfmt->code = ffmt->mbus_code;
 793
 794		/* set format on all pipeline subdevs */
 795		while (me != &fimc->vid_cap.subdev.entity) {
 796			sd = media_entity_to_v4l2_subdev(me);
 797
 798			sfmt.pad = 0;
 799			ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
 800			if (ret)
 801				return ret;
 802
 803			if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
 804				sfmt.pad = me->num_pads - 1;
 805				mf->code = tfmt->code;
 806				ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
 807									&sfmt);
 808				if (ret)
 809					return ret;
 810			}
 811
 812			pad = media_pad_remote_pad_first(&me->pads[sfmt.pad]);
 813			if (!pad)
 814				return -EINVAL;
 815			me = pad->entity;
 816		}
 817
 818		if (mf->code != tfmt->code)
 819			continue;
 820
 821		fcc = ffmt->fourcc;
 822		tfmt->width  = mf->width;
 823		tfmt->height = mf->height;
 824		ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
 825					NULL, &fcc, FIMC_SD_PAD_SINK_CAM);
 826		ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
 827					NULL, &fcc, FIMC_SD_PAD_SOURCE);
 828		if (ffmt && ffmt->mbus_code)
 829			mf->code = ffmt->mbus_code;
 830		if (mf->width != tfmt->width || mf->height != tfmt->height)
 831			continue;
 832		tfmt->code = mf->code;
 833		break;
 834	}
 835
 836	if (fmt_id && ffmt)
 837		*fmt_id = ffmt;
 838	*tfmt = *mf;
 839
 840	return 0;
 841}
 842
 843/**
 844 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
 845 * @sensor: pointer to the sensor subdev
 846 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
 847 * @num_planes: number of planes
 848 * @try: true to set the frame parameters, false to query only
 849 *
 850 * This function is used by this driver only for compressed/blob data formats.
 851 */
 852static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
 853				      struct v4l2_plane_pix_format *plane_fmt,
 854				      unsigned int num_planes, bool try)
 855{
 856	struct v4l2_mbus_frame_desc fd = { };
 857	int i, ret;
 858	int pad;
 859
 860	for (i = 0; i < num_planes; i++)
 861		fd.entry[i].length = plane_fmt[i].sizeimage;
 862
 863	pad = sensor->entity.num_pads - 1;
 864	if (try)
 865		ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
 866	else
 867		ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
 868
 869	if (ret < 0)
 870		return ret;
 871
 872	if (num_planes != fd.num_entries)
 873		return -EINVAL;
 874
 875	for (i = 0; i < num_planes; i++)
 876		plane_fmt[i].sizeimage = fd.entry[i].length;
 877
 878	if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
 879		v4l2_err(sensor->v4l2_dev,  "Unsupported buffer size: %u\n",
 880			 fd.entry[0].length);
 881
 882		return -EINVAL;
 883	}
 884
 885	return 0;
 886}
 887
 888static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
 889				 struct v4l2_format *f)
 890{
 891	struct fimc_dev *fimc = video_drvdata(file);
 892
 893	__fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
 894	return 0;
 895}
 896
 897/*
 898 * Try or set format on the fimc.X.capture video node and additionally
 899 * on the whole pipeline if @try is false.
 900 * Locking: the caller must _not_ hold the graph mutex.
 901 */
 902static int __video_try_or_set_format(struct fimc_dev *fimc,
 903				     struct v4l2_format *f, bool try,
 904				     const struct fimc_fmt **inp_fmt,
 905				     const struct fimc_fmt **out_fmt)
 906{
 907	struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
 908	struct fimc_vid_cap *vc = &fimc->vid_cap;
 909	struct exynos_video_entity *ve = &vc->ve;
 910	struct fimc_ctx *ctx = vc->ctx;
 911	unsigned int width = 0, height = 0;
 912	int ret = 0;
 913
 914	/* Pre-configure format at the camera input interface, for JPEG only */
 915	if (fimc_jpeg_fourcc(pix->pixelformat)) {
 916		fimc_capture_try_format(ctx, &pix->width, &pix->height,
 917					NULL, &pix->pixelformat,
 918					FIMC_SD_PAD_SINK_CAM);
 919		if (try) {
 920			width = pix->width;
 921			height = pix->height;
 922		} else {
 923			ctx->s_frame.f_width = pix->width;
 924			ctx->s_frame.f_height = pix->height;
 925		}
 926	}
 927
 928	/* Try the format at the scaler and the DMA output */
 929	*out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
 930					  NULL, &pix->pixelformat,
 931					  FIMC_SD_PAD_SOURCE);
 932	if (*out_fmt == NULL)
 933		return -EINVAL;
 934
 935	/* Restore image width/height for JPEG (no resizing supported). */
 936	if (try && fimc_jpeg_fourcc(pix->pixelformat)) {
 937		pix->width = width;
 938		pix->height = height;
 939	}
 940
 941	/* Try to match format at the host and the sensor */
 942	if (!vc->user_subdev_api) {
 943		struct v4l2_mbus_framefmt mbus_fmt;
 944		struct v4l2_mbus_framefmt *mf;
 945
 946		mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt;
 947
 948		mf->code = (*out_fmt)->mbus_code;
 949		mf->width = pix->width;
 950		mf->height = pix->height;
 951
 952		fimc_md_graph_lock(ve);
 953		ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try);
 954		fimc_md_graph_unlock(ve);
 955
 956		if (ret < 0)
 957			return ret;
 958
 959		pix->width = mf->width;
 960		pix->height = mf->height;
 961	}
 962
 963	fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix);
 964
 965	if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) {
 966		struct v4l2_subdev *sensor;
 967
 968		fimc_md_graph_lock(ve);
 969
 970		sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
 971		if (sensor)
 972			fimc_get_sensor_frame_desc(sensor, pix->plane_fmt,
 973						   (*out_fmt)->memplanes, try);
 974		else
 975			ret = -EPIPE;
 976
 977		fimc_md_graph_unlock(ve);
 978	}
 979
 980	return ret;
 981}
 982
 983static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
 984				   struct v4l2_format *f)
 985{
 986	struct fimc_dev *fimc = video_drvdata(file);
 987	const struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
 988
 989	return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
 990}
 991
 992static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
 993					enum fimc_color_fmt color)
 994{
 995	bool jpeg = fimc_fmt_is_user_defined(color);
 996
 997	ctx->scaler.enabled = !jpeg;
 998	fimc_ctrls_activate(ctx, !jpeg);
 999
1000	if (jpeg)
1001		set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1002	else
1003		clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1004}
1005
1006static int __fimc_capture_set_format(struct fimc_dev *fimc,
1007				     struct v4l2_format *f)
1008{
1009	struct fimc_vid_cap *vc = &fimc->vid_cap;
1010	struct fimc_ctx *ctx = vc->ctx;
1011	const struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1012	struct fimc_frame *ff = &ctx->d_frame;
1013	const struct fimc_fmt *inp_fmt = NULL;
1014	int ret, i;
1015
1016	if (vb2_is_busy(&fimc->vid_cap.vbq))
1017		return -EBUSY;
1018
1019	ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt);
1020	if (ret < 0)
1021		return ret;
1022
1023	/* Update RGB Alpha control state and value range */
1024	fimc_alpha_ctrl_update(ctx);
1025
1026	for (i = 0; i < ff->fmt->memplanes; i++) {
1027		ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1028		ff->payload[i] = pix->plane_fmt[i].sizeimage;
1029	}
1030
1031	set_frame_bounds(ff, pix->width, pix->height);
1032	/* Reset the composition rectangle if not yet configured */
1033	if (!(ctx->state & FIMC_COMPOSE))
1034		set_frame_crop(ff, 0, 0, pix->width, pix->height);
1035
1036	fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1037
1038	/* Reset cropping and set format at the camera interface input */
1039	if (!vc->user_subdev_api) {
1040		ctx->s_frame.fmt = inp_fmt;
1041		set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1042		set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1043	}
1044
1045	return ret;
1046}
1047
1048static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1049				 struct v4l2_format *f)
1050{
1051	struct fimc_dev *fimc = video_drvdata(file);
1052
1053	return __fimc_capture_set_format(fimc, f);
1054}
1055
1056static int fimc_cap_enum_input(struct file *file, void *priv,
1057			       struct v4l2_input *i)
1058{
1059	struct fimc_dev *fimc = video_drvdata(file);
1060	struct exynos_video_entity *ve = &fimc->vid_cap.ve;
1061	struct v4l2_subdev *sd;
1062
1063	if (i->index != 0)
1064		return -EINVAL;
1065
1066	i->type = V4L2_INPUT_TYPE_CAMERA;
1067	fimc_md_graph_lock(ve);
1068	sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
1069	fimc_md_graph_unlock(ve);
1070
1071	if (sd)
1072		strscpy(i->name, sd->name, sizeof(i->name));
1073
1074	return 0;
1075}
1076
1077static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1078{
1079	return i == 0 ? i : -EINVAL;
1080}
1081
1082static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1083{
1084	*i = 0;
1085	return 0;
1086}
1087
1088/**
1089 * fimc_pipeline_validate - check for formats inconsistencies
1090 *                          between source and sink pad of each link
1091 * @fimc:	the FIMC device this context applies to
1092 *
1093 * Return 0 if all formats match or -EPIPE otherwise.
1094 */
1095static int fimc_pipeline_validate(struct fimc_dev *fimc)
1096{
1097	struct v4l2_subdev_format sink_fmt = {
1098		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
1099	};
1100	struct v4l2_subdev_format src_fmt = {
1101		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
1102	};
1103	struct fimc_vid_cap *vc = &fimc->vid_cap;
1104	struct v4l2_subdev *sd = &vc->subdev;
1105	struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe);
1106	struct media_pad *sink_pad, *src_pad;
1107	int i, ret;
1108
1109	while (1) {
1110		/*
1111		 * Find current entity sink pad and any remote sink pad linked
1112		 * to it. We stop if there is no sink pad in current entity or
1113		 * it is not linked to any other remote entity.
1114		 */
1115		src_pad = NULL;
1116
1117		for (i = 0; i < sd->entity.num_pads; i++) {
1118			struct media_pad *p = &sd->entity.pads[i];
1119
1120			if (p->flags & MEDIA_PAD_FL_SINK) {
1121				sink_pad = p;
1122				src_pad = media_pad_remote_pad_first(sink_pad);
1123				if (src_pad)
1124					break;
1125			}
1126		}
1127
1128		if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
1129			break;
1130
1131		/* Don't call FIMC subdev operation to avoid nested locking */
1132		if (sd == &vc->subdev) {
1133			const struct fimc_frame *ff = &vc->ctx->s_frame;
1134			sink_fmt.format.width = ff->f_width;
1135			sink_fmt.format.height = ff->f_height;
1136			sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1137		} else {
1138			sink_fmt.pad = sink_pad->index;
1139			ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1140			if (ret < 0 && ret != -ENOIOCTLCMD)
1141				return -EPIPE;
1142		}
1143
1144		/* Retrieve format at the source pad */
1145		sd = media_entity_to_v4l2_subdev(src_pad->entity);
1146		src_fmt.pad = src_pad->index;
1147		ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1148		if (ret < 0 && ret != -ENOIOCTLCMD)
1149			return -EPIPE;
1150
1151		if (src_fmt.format.width != sink_fmt.format.width ||
1152		    src_fmt.format.height != sink_fmt.format.height ||
1153		    src_fmt.format.code != sink_fmt.format.code)
1154			return -EPIPE;
1155
1156		if (sd == p->subdevs[IDX_SENSOR] &&
1157		    fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1158			struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1159			const struct fimc_frame *frame = &vc->ctx->d_frame;
1160			unsigned int i;
1161
1162			ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1163							 frame->fmt->memplanes,
1164							 false);
1165			if (ret < 0)
1166				return -EPIPE;
1167
1168			for (i = 0; i < frame->fmt->memplanes; i++)
1169				if (frame->payload[i] < plane_fmt[i].sizeimage)
1170					return -EPIPE;
1171		}
1172	}
1173	return 0;
1174}
1175
1176static int fimc_cap_streamon(struct file *file, void *priv,
1177			     enum v4l2_buf_type type)
1178{
1179	struct fimc_dev *fimc = video_drvdata(file);
1180	struct fimc_vid_cap *vc = &fimc->vid_cap;
1181	struct fimc_source_info *si = NULL;
1182	struct v4l2_subdev *sd;
1183	int ret;
1184
1185	if (fimc_capture_active(fimc))
1186		return -EBUSY;
1187
1188	ret = video_device_pipeline_start(&vc->ve.vdev, &vc->ve.pipe->mp);
1189	if (ret < 0)
1190		return ret;
1191
1192	sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR);
1193	if (sd)
1194		si = v4l2_get_subdev_hostdata(sd);
1195
1196	if (si == NULL) {
1197		ret = -EPIPE;
1198		goto err_p_stop;
1199	}
1200	/*
1201	 * Save configuration data related to currently attached image
1202	 * sensor or other data source, e.g. FIMC-IS.
1203	 */
1204	vc->source_config = *si;
1205
1206	if (vc->input == GRP_ID_FIMC_IS)
1207		vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
1208
1209	if (vc->user_subdev_api) {
1210		ret = fimc_pipeline_validate(fimc);
1211		if (ret < 0)
1212			goto err_p_stop;
1213	}
1214
1215	ret = vb2_ioctl_streamon(file, priv, type);
1216	if (!ret) {
1217		vc->streaming = true;
1218		return ret;
1219	}
1220
1221err_p_stop:
1222	video_device_pipeline_stop(&vc->ve.vdev);
1223	return ret;
1224}
1225
1226static int fimc_cap_streamoff(struct file *file, void *priv,
1227			    enum v4l2_buf_type type)
1228{
1229	struct fimc_dev *fimc = video_drvdata(file);
1230	struct fimc_vid_cap *vc = &fimc->vid_cap;
1231	int ret;
1232
1233	ret = vb2_ioctl_streamoff(file, priv, type);
1234	if (ret < 0)
1235		return ret;
1236
1237	if (vc->streaming) {
1238		video_device_pipeline_stop(&vc->ve.vdev);
1239		vc->streaming = false;
1240	}
1241
1242	return 0;
1243}
1244
1245static int fimc_cap_reqbufs(struct file *file, void *priv,
1246			    struct v4l2_requestbuffers *reqbufs)
1247{
1248	struct fimc_dev *fimc = video_drvdata(file);
1249	int ret;
1250
1251	ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
1252
1253	if (!ret)
1254		fimc->vid_cap.reqbufs_count = reqbufs->count;
1255
1256	return ret;
1257}
1258
1259static int fimc_cap_g_selection(struct file *file, void *fh,
1260				struct v4l2_selection *s)
1261{
1262	struct fimc_dev *fimc = video_drvdata(file);
1263	struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1264	const struct fimc_frame *f = &ctx->s_frame;
1265
1266	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1267		return -EINVAL;
1268
1269	switch (s->target) {
1270	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1271	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1272		f = &ctx->d_frame;
1273		fallthrough;
1274	case V4L2_SEL_TGT_CROP_BOUNDS:
1275	case V4L2_SEL_TGT_CROP_DEFAULT:
1276		s->r.left = 0;
1277		s->r.top = 0;
1278		s->r.width = f->o_width;
1279		s->r.height = f->o_height;
1280		return 0;
1281
1282	case V4L2_SEL_TGT_COMPOSE:
1283		f = &ctx->d_frame;
1284		fallthrough;
1285	case V4L2_SEL_TGT_CROP:
1286		s->r.left = f->offs_h;
1287		s->r.top = f->offs_v;
1288		s->r.width = f->width;
1289		s->r.height = f->height;
1290		return 0;
1291	}
1292
1293	return -EINVAL;
1294}
1295
1296static int fimc_cap_s_selection(struct file *file, void *fh,
1297				struct v4l2_selection *s)
1298{
1299	struct fimc_dev *fimc = video_drvdata(file);
1300	struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1301	struct v4l2_rect rect = s->r;
1302	struct fimc_frame *f;
1303	unsigned long flags;
1304
1305	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1306		return -EINVAL;
1307
1308	if (s->target == V4L2_SEL_TGT_COMPOSE)
1309		f = &ctx->d_frame;
1310	else if (s->target == V4L2_SEL_TGT_CROP)
1311		f = &ctx->s_frame;
1312	else
1313		return -EINVAL;
1314
1315	fimc_capture_try_selection(ctx, &rect, s->target);
1316
1317	if (s->flags & V4L2_SEL_FLAG_LE &&
1318	    !v4l2_rect_enclosed(&rect, &s->r))
1319		return -ERANGE;
1320
1321	if (s->flags & V4L2_SEL_FLAG_GE &&
1322	    !v4l2_rect_enclosed(&s->r, &rect))
1323		return -ERANGE;
1324
1325	s->r = rect;
1326	spin_lock_irqsave(&fimc->slock, flags);
1327	set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1328		       s->r.height);
1329	spin_unlock_irqrestore(&fimc->slock, flags);
1330
1331	set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1332	return 0;
1333}
1334
1335static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1336	.vidioc_querycap		= fimc_cap_querycap,
1337
1338	.vidioc_enum_fmt_vid_cap	= fimc_cap_enum_fmt,
1339	.vidioc_try_fmt_vid_cap_mplane	= fimc_cap_try_fmt_mplane,
1340	.vidioc_s_fmt_vid_cap_mplane	= fimc_cap_s_fmt_mplane,
1341	.vidioc_g_fmt_vid_cap_mplane	= fimc_cap_g_fmt_mplane,
1342
1343	.vidioc_reqbufs			= fimc_cap_reqbufs,
1344	.vidioc_querybuf		= vb2_ioctl_querybuf,
1345	.vidioc_qbuf			= vb2_ioctl_qbuf,
1346	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
1347	.vidioc_expbuf			= vb2_ioctl_expbuf,
1348	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
1349	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
1350
1351	.vidioc_streamon		= fimc_cap_streamon,
1352	.vidioc_streamoff		= fimc_cap_streamoff,
1353
1354	.vidioc_g_selection		= fimc_cap_g_selection,
1355	.vidioc_s_selection		= fimc_cap_s_selection,
1356
1357	.vidioc_enum_input		= fimc_cap_enum_input,
1358	.vidioc_s_input			= fimc_cap_s_input,
1359	.vidioc_g_input			= fimc_cap_g_input,
1360};
1361
1362/* Capture subdev media entity operations */
1363static int fimc_link_setup(struct media_entity *entity,
1364			   const struct media_pad *local,
1365			   const struct media_pad *remote, u32 flags)
1366{
1367	struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1368	struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1369	struct fimc_vid_cap *vc = &fimc->vid_cap;
1370	struct v4l2_subdev *sensor;
1371
1372	if (!is_media_entity_v4l2_subdev(remote->entity))
1373		return -EINVAL;
1374
1375	if (WARN_ON(fimc == NULL))
1376		return 0;
1377
1378	dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1379	    local->entity->name, remote->entity->name, flags,
1380	    fimc->vid_cap.input);
1381
1382	if (!(flags & MEDIA_LNK_FL_ENABLED)) {
1383		fimc->vid_cap.input = 0;
1384		return 0;
1385	}
1386
1387	if (vc->input != 0)
1388		return -EBUSY;
1389
1390	vc->input = sd->grp_id;
1391
1392	if (vc->user_subdev_api)
1393		return 0;
1394
1395	/* Inherit V4L2 controls from the image sensor subdev. */
1396	sensor = fimc_find_remote_sensor(&vc->subdev.entity);
1397	if (sensor == NULL)
1398		return 0;
1399
1400	return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
1401				     sensor->ctrl_handler, NULL, true);
1402}
1403
1404static const struct media_entity_operations fimc_sd_media_ops = {
1405	.link_setup = fimc_link_setup,
1406};
1407
1408/**
1409 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1410 * @sd: pointer to a subdev generating the notification
1411 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1412 * @arg: pointer to an u32 type integer that stores the frame payload value
1413 *
1414 * The End Of Frame notification sent by sensor subdev in its still capture
1415 * mode. If there is only a single VSYNC generated by the sensor at the
1416 * beginning of a frame transmission, FIMC does not issue the LastIrq
1417 * (end of frame) interrupt. And this notification is used to complete the
1418 * frame capture and returning a buffer to user-space. Subdev drivers should
1419 * call this notification from their last 'End of frame capture' interrupt.
1420 */
1421void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1422			void *arg)
1423{
1424	struct fimc_source_info	*si;
1425	struct fimc_vid_buffer *buf;
1426	struct fimc_md *fmd;
1427	struct fimc_dev *fimc;
1428	unsigned long flags;
1429
1430	if (sd == NULL)
1431		return;
1432
1433	si = v4l2_get_subdev_hostdata(sd);
1434	fmd = entity_to_fimc_mdev(&sd->entity);
1435
1436	spin_lock_irqsave(&fmd->slock, flags);
1437
1438	fimc = si ? source_to_sensor_info(si)->host : NULL;
1439
1440	if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1441	    test_bit(ST_CAPT_PEND, &fimc->state)) {
1442		unsigned long irq_flags;
1443		spin_lock_irqsave(&fimc->slock, irq_flags);
1444		if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1445			buf = list_entry(fimc->vid_cap.active_buf_q.next,
1446					 struct fimc_vid_buffer, list);
1447			vb2_set_plane_payload(&buf->vb.vb2_buf, 0,
1448					      *((u32 *)arg));
1449		}
1450		fimc_capture_irq_handler(fimc, 1);
1451		fimc_deactivate_capture(fimc);
1452		spin_unlock_irqrestore(&fimc->slock, irq_flags);
1453	}
1454	spin_unlock_irqrestore(&fmd->slock, flags);
1455}
1456
1457static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1458				      struct v4l2_subdev_state *sd_state,
1459				      struct v4l2_subdev_mbus_code_enum *code)
1460{
1461	const struct fimc_fmt *fmt;
1462
1463	fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1464	if (!fmt)
1465		return -EINVAL;
1466	code->code = fmt->mbus_code;
1467	return 0;
1468}
1469
1470static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1471			       struct v4l2_subdev_state *sd_state,
1472			       struct v4l2_subdev_format *fmt)
1473{
1474	struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1475	struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1476	const struct fimc_frame *ff = &ctx->s_frame;
1477	struct v4l2_mbus_framefmt *mf;
1478
1479	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1480		mf = v4l2_subdev_state_get_format(sd_state, fmt->pad);
1481		fmt->format = *mf;
1482		return 0;
1483	}
1484
1485	mf = &fmt->format;
1486	mutex_lock(&fimc->lock);
1487
1488	switch (fmt->pad) {
1489	case FIMC_SD_PAD_SOURCE:
1490		if (!WARN_ON(ff->fmt == NULL))
1491			mf->code = ff->fmt->mbus_code;
1492		/* Sink pads crop rectangle size */
1493		mf->width = ff->width;
1494		mf->height = ff->height;
1495		break;
1496	case FIMC_SD_PAD_SINK_FIFO:
1497		*mf = fimc->vid_cap.wb_fmt;
1498		break;
1499	case FIMC_SD_PAD_SINK_CAM:
1500	default:
1501		*mf = fimc->vid_cap.ci_fmt;
1502		break;
1503	}
1504
1505	mutex_unlock(&fimc->lock);
1506	mf->colorspace = V4L2_COLORSPACE_JPEG;
1507
1508	return 0;
1509}
1510
1511static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1512			       struct v4l2_subdev_state *sd_state,
1513			       struct v4l2_subdev_format *fmt)
1514{
1515	struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1516	struct v4l2_mbus_framefmt *mf = &fmt->format;
1517	struct fimc_vid_cap *vc = &fimc->vid_cap;
1518	struct fimc_ctx *ctx = vc->ctx;
1519	struct fimc_frame *ff;
1520	const struct fimc_fmt *ffmt;
1521
1522	dbg("pad%d: code: 0x%x, %dx%d",
1523	    fmt->pad, mf->code, mf->width, mf->height);
1524
1525	if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq))
1526		return -EBUSY;
1527
1528	mutex_lock(&fimc->lock);
1529	ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1530				       &mf->code, NULL, fmt->pad);
1531	mutex_unlock(&fimc->lock);
1532	mf->colorspace = V4L2_COLORSPACE_JPEG;
1533
1534	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1535		mf = v4l2_subdev_state_get_format(sd_state, fmt->pad);
1536		*mf = fmt->format;
1537		return 0;
1538	}
1539	/* There must be a bug in the driver if this happens */
1540	if (WARN_ON(ffmt == NULL))
1541		return -EINVAL;
1542
1543	/* Update RGB Alpha control state and value range */
1544	fimc_alpha_ctrl_update(ctx);
1545
1546	fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1547	if (fmt->pad == FIMC_SD_PAD_SOURCE) {
1548		ff = &ctx->d_frame;
1549		/* Sink pads crop rectangle size */
1550		mf->width = ctx->s_frame.width;
1551		mf->height = ctx->s_frame.height;
1552	} else {
1553		ff = &ctx->s_frame;
1554	}
1555
1556	mutex_lock(&fimc->lock);
1557	set_frame_bounds(ff, mf->width, mf->height);
1558
1559	if (fmt->pad == FIMC_SD_PAD_SINK_FIFO)
1560		vc->wb_fmt = *mf;
1561	else if (fmt->pad == FIMC_SD_PAD_SINK_CAM)
1562		vc->ci_fmt = *mf;
1563
1564	ff->fmt = ffmt;
1565
1566	/* Reset the crop rectangle if required. */
1567	if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1568		set_frame_crop(ff, 0, 0, mf->width, mf->height);
1569
1570	if (fmt->pad != FIMC_SD_PAD_SOURCE)
1571		ctx->state &= ~FIMC_COMPOSE;
1572
1573	mutex_unlock(&fimc->lock);
1574	return 0;
1575}
1576
1577static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1578				     struct v4l2_subdev_state *sd_state,
1579				     struct v4l2_subdev_selection *sel)
1580{
1581	struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1582	struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1583	const struct fimc_frame *f = &ctx->s_frame;
1584	struct v4l2_rect *r = &sel->r;
1585	struct v4l2_rect *try_sel;
1586
1587	if (sel->pad == FIMC_SD_PAD_SOURCE)
1588		return -EINVAL;
1589
1590	mutex_lock(&fimc->lock);
1591
1592	switch (sel->target) {
1593	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1594		f = &ctx->d_frame;
1595		fallthrough;
1596	case V4L2_SEL_TGT_CROP_BOUNDS:
1597		r->width = f->o_width;
1598		r->height = f->o_height;
1599		r->left = 0;
1600		r->top = 0;
1601		mutex_unlock(&fimc->lock);
1602		return 0;
1603
1604	case V4L2_SEL_TGT_CROP:
1605		try_sel = v4l2_subdev_state_get_crop(sd_state, sel->pad);
1606		break;
1607	case V4L2_SEL_TGT_COMPOSE:
1608		try_sel = v4l2_subdev_state_get_compose(sd_state, sel->pad);
1609		f = &ctx->d_frame;
1610		break;
1611	default:
1612		mutex_unlock(&fimc->lock);
1613		return -EINVAL;
1614	}
1615
1616	if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1617		sel->r = *try_sel;
1618	} else {
1619		r->left = f->offs_h;
1620		r->top = f->offs_v;
1621		r->width = f->width;
1622		r->height = f->height;
1623	}
1624
1625	dbg("target %#x: (%d,%d)/%ux%u, f_w: %d, f_h: %d",
1626	    sel->pad, r->left, r->top, r->width, r->height,
1627	    f->f_width, f->f_height);
1628
1629	mutex_unlock(&fimc->lock);
1630	return 0;
1631}
1632
1633static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1634				     struct v4l2_subdev_state *sd_state,
1635				     struct v4l2_subdev_selection *sel)
1636{
1637	struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1638	struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1639	struct fimc_frame *f = &ctx->s_frame;
1640	struct v4l2_rect *r = &sel->r;
1641	struct v4l2_rect *try_sel;
1642	unsigned long flags;
1643
1644	if (sel->pad == FIMC_SD_PAD_SOURCE)
1645		return -EINVAL;
1646
1647	mutex_lock(&fimc->lock);
1648	fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1649
1650	switch (sel->target) {
1651	case V4L2_SEL_TGT_CROP:
1652		try_sel = v4l2_subdev_state_get_crop(sd_state, sel->pad);
1653		break;
1654	case V4L2_SEL_TGT_COMPOSE:
1655		try_sel = v4l2_subdev_state_get_compose(sd_state, sel->pad);
1656		f = &ctx->d_frame;
1657		break;
1658	default:
1659		mutex_unlock(&fimc->lock);
1660		return -EINVAL;
1661	}
1662
1663	if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1664		*try_sel = sel->r;
1665	} else {
1666		spin_lock_irqsave(&fimc->slock, flags);
1667		set_frame_crop(f, r->left, r->top, r->width, r->height);
1668		set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1669		if (sel->target == V4L2_SEL_TGT_COMPOSE)
1670			ctx->state |= FIMC_COMPOSE;
1671		spin_unlock_irqrestore(&fimc->slock, flags);
1672	}
1673
1674	dbg("target %#x: (%d,%d)/%ux%u", sel->target, r->left, r->top,
1675	    r->width, r->height);
1676
1677	mutex_unlock(&fimc->lock);
1678	return 0;
1679}
1680
1681static const struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1682	.enum_mbus_code = fimc_subdev_enum_mbus_code,
1683	.get_selection = fimc_subdev_get_selection,
1684	.set_selection = fimc_subdev_set_selection,
1685	.get_fmt = fimc_subdev_get_fmt,
1686	.set_fmt = fimc_subdev_set_fmt,
1687};
1688
1689static const struct v4l2_subdev_ops fimc_subdev_ops = {
1690	.pad = &fimc_subdev_pad_ops,
1691};
1692
1693/* Set default format at the sensor and host interface */
1694static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1695{
1696	struct v4l2_format fmt = {
1697		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1698		.fmt.pix_mp = {
1699			.width		= FIMC_DEFAULT_WIDTH,
1700			.height		= FIMC_DEFAULT_HEIGHT,
1701			.pixelformat	= V4L2_PIX_FMT_YUYV,
1702			.field		= V4L2_FIELD_NONE,
1703			.colorspace	= V4L2_COLORSPACE_JPEG,
1704		},
1705	};
1706
1707	return __fimc_capture_set_format(fimc, &fmt);
1708}
1709
1710/* fimc->lock must be already initialized */
1711static int fimc_register_capture_device(struct fimc_dev *fimc,
1712				 struct v4l2_device *v4l2_dev)
1713{
1714	struct video_device *vfd = &fimc->vid_cap.ve.vdev;
1715	struct vb2_queue *q = &fimc->vid_cap.vbq;
1716	struct fimc_vid_cap *vid_cap;
1717	const struct fimc_fmt *fmt;
1718	struct fimc_ctx *ctx;
1719	int ret = -ENOMEM;
1720
1721	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1722	if (!ctx)
1723		return -ENOMEM;
1724
1725	ctx->fimc_dev	 = fimc;
1726	ctx->in_path	 = FIMC_IO_CAMERA;
1727	ctx->out_path	 = FIMC_IO_DMA;
1728	ctx->state	 = FIMC_CTX_CAP;
1729	ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1730	ctx->d_frame.fmt = ctx->s_frame.fmt;
1731
1732	memset(vfd, 0, sizeof(*vfd));
1733	snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1734
1735	vfd->fops	= &fimc_capture_fops;
1736	vfd->ioctl_ops	= &fimc_capture_ioctl_ops;
1737	vfd->v4l2_dev	= v4l2_dev;
1738	vfd->minor	= -1;
1739	vfd->release	= video_device_release_empty;
1740	vfd->queue	= q;
1741	vfd->lock	= &fimc->lock;
1742	vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
1743
1744	video_set_drvdata(vfd, fimc);
1745	vid_cap = &fimc->vid_cap;
1746	vid_cap->active_buf_cnt = 0;
1747	vid_cap->reqbufs_count = 0;
1748	vid_cap->ctx = ctx;
1749
1750	INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1751	INIT_LIST_HEAD(&vid_cap->active_buf_q);
1752
1753	memset(q, 0, sizeof(*q));
1754	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1755	q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1756	q->drv_priv = ctx;
1757	q->ops = &fimc_capture_qops;
1758	q->mem_ops = &vb2_dma_contig_memops;
1759	q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1760	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1761	q->lock = &fimc->lock;
1762	q->dev = &fimc->pdev->dev;
1763
1764	ret = vb2_queue_init(q);
1765	if (ret)
1766		goto err_free_ctx;
1767
1768	/* Default format configuration */
1769	fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1770	vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH;
1771	vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT;
1772	vid_cap->ci_fmt.code = fmt->mbus_code;
1773
1774	ctx->s_frame.width = FIMC_DEFAULT_WIDTH;
1775	ctx->s_frame.height = FIMC_DEFAULT_HEIGHT;
1776	ctx->s_frame.fmt = fmt;
1777
1778	fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0);
1779	vid_cap->wb_fmt = vid_cap->ci_fmt;
1780	vid_cap->wb_fmt.code = fmt->mbus_code;
1781
1782	vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1783	vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1784	ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
1785	if (ret)
1786		goto err_free_ctx;
1787
1788	ret = fimc_ctrls_create(ctx);
1789	if (ret)
1790		goto err_me_cleanup;
1791
1792	ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1793	if (ret)
1794		goto err_ctrl_free;
1795
1796	v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1797		  vfd->name, video_device_node_name(vfd));
1798
1799	vfd->ctrl_handler = &ctx->ctrls.handler;
1800	return 0;
1801
1802err_ctrl_free:
1803	fimc_ctrls_delete(ctx);
1804err_me_cleanup:
1805	media_entity_cleanup(&vfd->entity);
1806err_free_ctx:
1807	kfree(ctx);
1808	return ret;
1809}
1810
1811static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1812{
1813	struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1814	int ret;
1815
1816	if (fimc == NULL)
1817		return -ENXIO;
1818
1819	ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1820	if (ret)
1821		return ret;
1822
1823	fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd);
1824
1825	ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1826	if (ret) {
1827		fimc_unregister_m2m_device(fimc);
1828		fimc->vid_cap.ve.pipe = NULL;
1829	}
1830
1831	return ret;
1832}
1833
1834static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1835{
1836	struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1837	struct video_device *vdev;
1838
1839	if (fimc == NULL)
1840		return;
1841
1842	mutex_lock(&fimc->lock);
1843
1844	fimc_unregister_m2m_device(fimc);
1845	vdev = &fimc->vid_cap.ve.vdev;
1846
1847	if (video_is_registered(vdev)) {
1848		video_unregister_device(vdev);
1849		media_entity_cleanup(&vdev->entity);
1850		fimc_ctrls_delete(fimc->vid_cap.ctx);
1851		fimc->vid_cap.ve.pipe = NULL;
1852	}
1853	kfree(fimc->vid_cap.ctx);
1854	fimc->vid_cap.ctx = NULL;
1855
1856	mutex_unlock(&fimc->lock);
1857}
1858
1859static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1860	.registered = fimc_capture_subdev_registered,
1861	.unregistered = fimc_capture_subdev_unregistered,
1862};
1863
1864int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1865{
1866	struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1867	int ret;
1868
1869	v4l2_subdev_init(sd, &fimc_subdev_ops);
1870	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1871	snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
1872
1873	fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
1874	fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
1875	fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1876	ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM,
1877				fimc->vid_cap.sd_pads);
1878	if (ret)
1879		return ret;
1880
1881	sd->entity.ops = &fimc_sd_media_ops;
1882	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1883	sd->internal_ops = &fimc_capture_sd_internal_ops;
1884	v4l2_set_subdevdata(sd, fimc);
1885	return 0;
1886}
1887
1888void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1889{
1890	struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1891
1892	v4l2_device_unregister_subdev(sd);
1893	media_entity_cleanup(&sd->entity);
1894	v4l2_set_subdevdata(sd, NULL);
1895}