2 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
4 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
5 * Sylwester Nawrocki <s.nawrocki@samsung.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/errno.h>
16 #include <linux/bug.h>
17 #include <linux/interrupt.h>
18 #include <linux/device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/list.h>
21 #include <linux/slab.h>
23 #include <linux/videodev2.h>
24 #include <media/v4l2-device.h>
25 #include <media/v4l2-ioctl.h>
26 #include <media/v4l2-mem2mem.h>
27 #include <media/videobuf2-core.h>
28 #include <media/videobuf2-dma-contig.h>
30 #include "fimc-mdevice.h"
31 #include "fimc-core.h"
34 static int fimc_capture_hw_init(struct fimc_dev *fimc)
36 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
37 struct fimc_pipeline *p = &fimc->pipeline;
38 struct fimc_sensor_info *sensor;
42 if (p->subdevs[IDX_SENSOR] == NULL || ctx == NULL)
44 if (ctx->s_frame.fmt == NULL)
47 sensor = v4l2_get_subdev_hostdata(p->subdevs[IDX_SENSOR]);
49 spin_lock_irqsave(&fimc->slock, flags);
50 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
51 fimc_set_yuv_order(ctx);
53 fimc_hw_set_camera_polarity(fimc, &sensor->pdata);
54 fimc_hw_set_camera_type(fimc, &sensor->pdata);
55 fimc_hw_set_camera_source(fimc, &sensor->pdata);
56 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
58 ret = fimc_set_scaler_info(ctx);
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->variant->has_alpha)
69 fimc_hw_set_rgb_alpha(ctx);
70 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
72 spin_unlock_irqrestore(&fimc->slock, flags);
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.
84 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
86 struct fimc_vid_cap *cap = &fimc->vid_cap;
87 struct fimc_vid_buffer *buf;
91 spin_lock_irqsave(&fimc->slock, flags);
92 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
94 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
95 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
97 fimc->state |= (1 << ST_CAPT_SUSPENDED);
99 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
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_STATE_ERROR);
106 /* If suspending put unused buffers onto pending queue */
107 while (!list_empty(&cap->active_buf_q)) {
108 buf = fimc_active_queue_pop(cap);
110 fimc_pending_queue_add(cap, buf);
112 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
118 spin_unlock_irqrestore(&fimc->slock, flags);
121 return fimc_pipeline_call(fimc, set_stream,
127 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
131 if (!fimc_capture_active(fimc))
134 spin_lock_irqsave(&fimc->slock, flags);
135 set_bit(ST_CAPT_SHUT, &fimc->state);
136 fimc_deactivate_capture(fimc);
137 spin_unlock_irqrestore(&fimc->slock, flags);
139 wait_event_timeout(fimc->irq_queue,
140 !test_bit(ST_CAPT_SHUT, &fimc->state),
141 (2*HZ/10)); /* 200 ms */
143 return fimc_capture_state_cleanup(fimc, suspend);
147 * fimc_capture_config_update - apply the camera interface configuration
149 * To be called from within the interrupt handler with fimc.slock
150 * spinlock held. It updates the camera pixel crop, rotation and
153 static int fimc_capture_config_update(struct fimc_ctx *ctx)
155 struct fimc_dev *fimc = ctx->fimc_dev;
158 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
160 ret = fimc_set_scaler_info(ctx);
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->variant->has_alpha)
172 fimc_hw_set_rgb_alpha(ctx);
174 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
178 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
180 struct v4l2_subdev *csis = fimc->pipeline.subdevs[IDX_CSIS];
181 struct fimc_vid_cap *cap = &fimc->vid_cap;
182 struct fimc_frame *f = &cap->ctx->d_frame;
183 struct fimc_vid_buffer *v_buf;
187 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
188 wake_up(&fimc->irq_queue);
192 if (!list_empty(&cap->active_buf_q) &&
193 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
194 ktime_get_real_ts(&ts);
196 v_buf = fimc_active_queue_pop(cap);
198 tv = &v_buf->vb.v4l2_buf.timestamp;
199 tv->tv_sec = ts.tv_sec;
200 tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
201 v_buf->vb.v4l2_buf.sequence = cap->frame_count++;
203 vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE);
206 if (!list_empty(&cap->pending_buf_q)) {
208 v_buf = fimc_pending_queue_pop(cap);
209 fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index);
210 v_buf->index = cap->buf_index;
212 /* Move the buffer to the capture active queue */
213 fimc_active_queue_add(cap, v_buf);
215 dbg("next frame: %d, done frame: %d",
216 fimc_hw_get_frame_index(fimc), v_buf->index);
218 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
222 * Set up a buffer at MIPI-CSIS if current image format
223 * requires the frame embedded data capture.
225 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) {
226 unsigned int plane = ffs(f->fmt->mdataplanes) - 1;
227 unsigned int size = f->payload[plane];
228 s32 index = fimc_hw_get_frame_index(fimc);
231 list_for_each_entry(v_buf, &cap->active_buf_q, list) {
232 if (v_buf->index != index)
234 vaddr = vb2_plane_vaddr(&v_buf->vb, plane);
235 v4l2_subdev_call(csis, video, s_rx_buffer,
241 if (cap->active_buf_cnt == 0) {
243 clear_bit(ST_CAPT_RUN, &fimc->state);
245 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
248 set_bit(ST_CAPT_RUN, &fimc->state);
251 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
252 fimc_capture_config_update(cap->ctx);
254 if (cap->active_buf_cnt == 1) {
255 fimc_deactivate_capture(fimc);
256 clear_bit(ST_CAPT_STREAM, &fimc->state);
259 dbg("frame: %d, active_buf_cnt: %d",
260 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
264 static int start_streaming(struct vb2_queue *q, unsigned int count)
266 struct fimc_ctx *ctx = q->drv_priv;
267 struct fimc_dev *fimc = ctx->fimc_dev;
268 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
272 vid_cap->frame_count = 0;
274 ret = fimc_capture_hw_init(fimc);
276 fimc_capture_state_cleanup(fimc, false);
280 set_bit(ST_CAPT_PEND, &fimc->state);
282 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
284 if (vid_cap->active_buf_cnt >= min_bufs &&
285 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
286 fimc_activate_capture(ctx);
288 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
289 fimc_pipeline_call(fimc, set_stream,
296 static int stop_streaming(struct vb2_queue *q)
298 struct fimc_ctx *ctx = q->drv_priv;
299 struct fimc_dev *fimc = ctx->fimc_dev;
301 if (!fimc_capture_active(fimc))
304 return fimc_stop_capture(fimc, false);
307 int fimc_capture_suspend(struct fimc_dev *fimc)
309 bool suspend = fimc_capture_busy(fimc);
311 int ret = fimc_stop_capture(fimc, suspend);
314 return fimc_pipeline_call(fimc, close, &fimc->pipeline);
317 static void buffer_queue(struct vb2_buffer *vb);
319 int fimc_capture_resume(struct fimc_dev *fimc)
321 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
322 struct fimc_vid_buffer *buf;
325 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
328 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
329 vid_cap->buf_index = 0;
330 fimc_pipeline_call(fimc, open, &fimc->pipeline,
331 &vid_cap->vfd.entity, false);
332 fimc_capture_hw_init(fimc);
334 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
336 for (i = 0; i < vid_cap->reqbufs_count; i++) {
337 if (list_empty(&vid_cap->pending_buf_q))
339 buf = fimc_pending_queue_pop(vid_cap);
340 buffer_queue(&buf->vb);
346 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
347 unsigned int *num_buffers, unsigned int *num_planes,
348 unsigned int sizes[], void *allocators[])
350 const struct v4l2_pix_format_mplane *pixm = NULL;
351 struct fimc_ctx *ctx = vq->drv_priv;
352 struct fimc_frame *frame = &ctx->d_frame;
353 struct fimc_fmt *fmt = frame->fmt;
358 pixm = &pfmt->fmt.pix_mp;
359 fmt = fimc_find_format(&pixm->pixelformat, NULL,
360 FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1);
361 wh = pixm->width * pixm->height;
363 wh = frame->f_width * frame->f_height;
369 *num_planes = fmt->memplanes;
371 for (i = 0; i < fmt->memplanes; i++) {
372 unsigned int size = (wh * fmt->depth[i]) / 8;
374 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
375 else if (fimc_fmt_is_user_defined(fmt->color))
376 sizes[i] = frame->payload[i];
378 sizes[i] = max_t(u32, size, frame->payload[i]);
380 allocators[i] = ctx->fimc_dev->alloc_ctx;
386 static int buffer_prepare(struct vb2_buffer *vb)
388 struct vb2_queue *vq = vb->vb2_queue;
389 struct fimc_ctx *ctx = vq->drv_priv;
392 if (ctx->d_frame.fmt == NULL)
395 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
396 unsigned long size = ctx->d_frame.payload[i];
398 if (vb2_plane_size(vb, i) < size) {
399 v4l2_err(&ctx->fimc_dev->vid_cap.vfd,
400 "User buffer too small (%ld < %ld)\n",
401 vb2_plane_size(vb, i), size);
404 vb2_set_plane_payload(vb, i, size);
410 static void buffer_queue(struct vb2_buffer *vb)
412 struct fimc_vid_buffer *buf
413 = container_of(vb, struct fimc_vid_buffer, vb);
414 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
415 struct fimc_dev *fimc = ctx->fimc_dev;
416 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
420 spin_lock_irqsave(&fimc->slock, flags);
421 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
423 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
424 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
425 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
426 /* Setup the buffer directly for processing. */
427 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
430 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
431 buf->index = vid_cap->buf_index;
432 fimc_active_queue_add(vid_cap, buf);
434 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
435 vid_cap->buf_index = 0;
437 fimc_pending_queue_add(vid_cap, buf);
440 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
443 if (vb2_is_streaming(&vid_cap->vbq) &&
444 vid_cap->active_buf_cnt >= min_bufs &&
445 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
446 fimc_activate_capture(ctx);
447 spin_unlock_irqrestore(&fimc->slock, flags);
449 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
450 fimc_pipeline_call(fimc, set_stream,
454 spin_unlock_irqrestore(&fimc->slock, flags);
457 static void fimc_lock(struct vb2_queue *vq)
459 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
460 mutex_lock(&ctx->fimc_dev->lock);
463 static void fimc_unlock(struct vb2_queue *vq)
465 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
466 mutex_unlock(&ctx->fimc_dev->lock);
469 static struct vb2_ops fimc_capture_qops = {
470 .queue_setup = queue_setup,
471 .buf_prepare = buffer_prepare,
472 .buf_queue = buffer_queue,
473 .wait_prepare = fimc_unlock,
474 .wait_finish = fimc_lock,
475 .start_streaming = start_streaming,
476 .stop_streaming = stop_streaming,
480 * fimc_capture_ctrls_create - initialize the control handler
481 * Initialize the capture video node control handler and fill it
482 * with the FIMC controls. Inherit any sensor's controls if the
483 * 'user_subdev_api' flag is false (default behaviour).
484 * This function need to be called with the graph mutex held.
486 int fimc_capture_ctrls_create(struct fimc_dev *fimc)
488 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
489 struct v4l2_subdev *sensor = fimc->pipeline.subdevs[IDX_SENSOR];
492 if (WARN_ON(vid_cap->ctx == NULL))
494 if (vid_cap->ctx->ctrls.ready)
497 ret = fimc_ctrls_create(vid_cap->ctx);
499 if (ret || vid_cap->user_subdev_api || !sensor ||
500 !vid_cap->ctx->ctrls.ready)
503 return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrls.handler,
504 sensor->ctrl_handler, NULL);
507 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
509 static int fimc_capture_open(struct file *file)
511 struct fimc_dev *fimc = video_drvdata(file);
514 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
516 fimc_md_graph_lock(fimc);
517 mutex_lock(&fimc->lock);
519 if (fimc_m2m_active(fimc))
522 set_bit(ST_CAPT_BUSY, &fimc->state);
523 ret = pm_runtime_get_sync(&fimc->pdev->dev);
527 ret = v4l2_fh_open(file);
529 pm_runtime_put(&fimc->pdev->dev);
533 if (++fimc->vid_cap.refcnt == 1) {
534 ret = fimc_pipeline_call(fimc, open, &fimc->pipeline,
535 &fimc->vid_cap.vfd.entity, true);
537 if (!ret && !fimc->vid_cap.user_subdev_api)
538 ret = fimc_capture_set_default_format(fimc);
541 ret = fimc_capture_ctrls_create(fimc);
544 clear_bit(ST_CAPT_BUSY, &fimc->state);
545 pm_runtime_put_sync(&fimc->pdev->dev);
546 fimc->vid_cap.refcnt--;
547 v4l2_fh_release(file);
551 mutex_unlock(&fimc->lock);
552 fimc_md_graph_unlock(fimc);
556 static int fimc_capture_close(struct file *file)
558 struct fimc_dev *fimc = video_drvdata(file);
561 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
563 mutex_lock(&fimc->lock);
565 if (--fimc->vid_cap.refcnt == 0) {
566 clear_bit(ST_CAPT_BUSY, &fimc->state);
567 fimc_stop_capture(fimc, false);
568 fimc_pipeline_call(fimc, close, &fimc->pipeline);
569 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
572 pm_runtime_put(&fimc->pdev->dev);
574 if (fimc->vid_cap.refcnt == 0) {
575 vb2_queue_release(&fimc->vid_cap.vbq);
576 fimc_ctrls_delete(fimc->vid_cap.ctx);
579 ret = v4l2_fh_release(file);
581 mutex_unlock(&fimc->lock);
585 static unsigned int fimc_capture_poll(struct file *file,
586 struct poll_table_struct *wait)
588 struct fimc_dev *fimc = video_drvdata(file);
591 if (mutex_lock_interruptible(&fimc->lock))
594 ret = vb2_poll(&fimc->vid_cap.vbq, file, wait);
595 mutex_unlock(&fimc->lock);
600 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
602 struct fimc_dev *fimc = video_drvdata(file);
605 if (mutex_lock_interruptible(&fimc->lock))
608 ret = vb2_mmap(&fimc->vid_cap.vbq, vma);
609 mutex_unlock(&fimc->lock);
614 static const struct v4l2_file_operations fimc_capture_fops = {
615 .owner = THIS_MODULE,
616 .open = fimc_capture_open,
617 .release = fimc_capture_close,
618 .poll = fimc_capture_poll,
619 .unlocked_ioctl = video_ioctl2,
620 .mmap = fimc_capture_mmap,
624 * Format and crop negotiation helpers
627 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
628 u32 *width, u32 *height,
629 u32 *code, u32 *fourcc, int pad)
631 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
632 struct fimc_dev *fimc = ctx->fimc_dev;
633 const struct fimc_variant *var = fimc->variant;
634 const struct fimc_pix_limit *pl = var->pix_limit;
635 struct fimc_frame *dst = &ctx->d_frame;
636 u32 depth, min_w, max_w, min_h, align_h = 3;
637 u32 mask = FMT_FLAGS_CAM;
638 struct fimc_fmt *ffmt;
640 /* Conversion from/to JPEG or User Defined format is not supported */
641 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
642 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
643 *code = ctx->s_frame.fmt->mbus_code;
645 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
646 mask |= FMT_FLAGS_M2M;
648 ffmt = fimc_find_format(fourcc, code, mask, 0);
652 *code = ffmt->mbus_code;
654 *fourcc = ffmt->fourcc;
656 if (pad == FIMC_SD_PAD_SINK) {
657 max_w = fimc_fmt_is_user_defined(ffmt->color) ?
658 pl->scaler_dis_w : pl->scaler_en_w;
659 /* Apply the camera input interface pixel constraints */
660 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
661 height, max_t(u32, *height, 32),
662 FIMC_CAMIF_MAX_HEIGHT,
663 fimc_fmt_is_user_defined(ffmt->color) ?
668 /* Can't scale or crop in transparent (JPEG) transfer mode */
669 if (fimc_fmt_is_user_defined(ffmt->color)) {
670 *width = ctx->s_frame.f_width;
671 *height = ctx->s_frame.f_height;
674 /* Apply the scaler and the output DMA constraints */
675 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
676 if (ctx->state & FIMC_COMPOSE) {
677 min_w = dst->offs_h + dst->width;
678 min_h = dst->offs_v + dst->height;
680 min_w = var->min_out_pixsize;
681 min_h = var->min_out_pixsize;
683 if (var->min_vsize_align == 1 && !rotation)
684 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
686 depth = fimc_get_format_depth(ffmt);
687 v4l_bound_align_image(width, min_w, max_w,
688 ffs(var->min_out_pixsize) - 1,
689 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
691 64/(ALIGN(depth, 8)));
693 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
694 pad, code ? *code : 0, *width, *height,
695 dst->f_width, dst->f_height);
700 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
704 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
705 struct fimc_dev *fimc = ctx->fimc_dev;
706 const struct fimc_variant *var = fimc->variant;
707 const struct fimc_pix_limit *pl = var->pix_limit;
708 struct fimc_frame *sink = &ctx->s_frame;
709 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
710 u32 align_sz = 0, align_h = 4;
711 u32 max_sc_h, max_sc_v;
713 /* In JPEG transparent transfer mode cropping is not supported */
714 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
715 r->width = sink->f_width;
716 r->height = sink->f_height;
717 r->left = r->top = 0;
720 if (target == V4L2_SEL_TGT_COMPOSE) {
721 if (ctx->rotation != 90 && ctx->rotation != 270)
723 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
724 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
725 min_sz = var->min_out_pixsize;
727 u32 depth = fimc_get_format_depth(sink->fmt);
728 align_sz = 64/ALIGN(depth, 8);
729 min_sz = var->min_inp_pixsize;
730 min_w = min_h = min_sz;
731 max_sc_h = max_sc_v = 1;
734 * For the compose rectangle the following constraints must be met:
735 * - it must fit in the sink pad format rectangle (f_width/f_height);
736 * - maximum downscaling ratio is 64;
737 * - maximum crop size depends if the rotator is used or not;
738 * - the sink pad format width/height must be 4 multiple of the
739 * prescaler ratios determined by sink pad size and source pad crop,
740 * the prescaler ratio is returned by fimc_get_scaler_factor().
743 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
744 rotate ? sink->f_height : sink->f_width);
745 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
747 if (target == V4L2_SEL_TGT_COMPOSE) {
748 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
749 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
751 swap(max_sc_h, max_sc_v);
755 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
756 &r->height, min_h, max_h, align_h,
758 /* Adjust left/top if crop/compose rectangle is out of bounds */
759 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
760 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
761 r->left = round_down(r->left, var->hor_offs_align);
763 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
764 target, r->left, r->top, r->width, r->height,
765 sink->f_width, sink->f_height);
769 * The video node ioctl operations
771 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
772 struct v4l2_capability *cap)
774 struct fimc_dev *fimc = video_drvdata(file);
776 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
777 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
778 cap->bus_info[0] = 0;
779 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
784 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
785 struct v4l2_fmtdesc *f)
787 struct fimc_fmt *fmt;
789 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
793 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
794 f->pixelformat = fmt->fourcc;
795 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
796 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
800 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
802 struct media_pad *pad = &me->pads[0];
804 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
805 pad = media_entity_remote_source(pad);
816 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
818 * @ctx: FIMC capture context
819 * @tfmt: media bus format to try/set on subdevs
820 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
821 * @set: true to set format on subdevs, false to try only
823 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
824 struct v4l2_mbus_framefmt *tfmt,
825 struct fimc_fmt **fmt_id,
828 struct fimc_dev *fimc = ctx->fimc_dev;
829 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
830 struct v4l2_subdev_format sfmt;
831 struct v4l2_mbus_framefmt *mf = &sfmt.format;
832 struct media_entity *me;
833 struct fimc_fmt *ffmt;
834 struct media_pad *pad;
838 if (WARN_ON(!sd || !tfmt))
841 memset(&sfmt, 0, sizeof(sfmt));
843 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
845 me = fimc_pipeline_get_head(&sd->entity);
848 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
852 * Notify user-space if common pixel code for
853 * host and sensor does not exist.
857 mf->code = tfmt->code = ffmt->mbus_code;
859 /* set format on all pipeline subdevs */
860 while (me != &fimc->vid_cap.subdev.entity) {
861 sd = media_entity_to_v4l2_subdev(me);
864 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
868 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
869 sfmt.pad = me->num_pads - 1;
870 mf->code = tfmt->code;
871 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
877 pad = media_entity_remote_source(&me->pads[sfmt.pad]);
883 if (mf->code != tfmt->code)
887 tfmt->width = mf->width;
888 tfmt->height = mf->height;
889 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
890 NULL, &fcc, FIMC_SD_PAD_SINK);
891 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
892 NULL, &fcc, FIMC_SD_PAD_SOURCE);
893 if (ffmt && ffmt->mbus_code)
894 mf->code = ffmt->mbus_code;
895 if (mf->width != tfmt->width || mf->height != tfmt->height)
897 tfmt->code = mf->code;
909 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
910 * @sensor: pointer to the sensor subdev
911 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
912 * @try: true to set the frame parameters, false to query only
914 * This function is used by this driver only for compressed/blob data formats.
916 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
917 struct v4l2_plane_pix_format *plane_fmt,
918 unsigned int num_planes, bool try)
920 struct v4l2_mbus_frame_desc fd;
924 for (i = 0; i < num_planes; i++)
925 fd.entry[i].length = plane_fmt[i].sizeimage;
927 pad = sensor->entity.num_pads - 1;
929 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
931 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
936 if (num_planes != fd.num_entries)
939 for (i = 0; i < num_planes; i++)
940 plane_fmt[i].sizeimage = fd.entry[i].length;
942 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
943 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
952 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
953 struct v4l2_format *f)
955 struct fimc_dev *fimc = video_drvdata(file);
957 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
961 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
962 struct v4l2_format *f)
964 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
965 struct fimc_dev *fimc = video_drvdata(file);
966 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
967 struct v4l2_mbus_framefmt mf;
968 struct fimc_fmt *ffmt = NULL;
971 fimc_md_graph_lock(fimc);
972 mutex_lock(&fimc->lock);
974 if (fimc_jpeg_fourcc(pix->pixelformat)) {
975 fimc_capture_try_format(ctx, &pix->width, &pix->height,
976 NULL, &pix->pixelformat,
978 ctx->s_frame.f_width = pix->width;
979 ctx->s_frame.f_height = pix->height;
981 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
982 NULL, &pix->pixelformat,
989 if (!fimc->vid_cap.user_subdev_api) {
990 mf.width = pix->width;
991 mf.height = pix->height;
992 mf.code = ffmt->mbus_code;
993 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
994 pix->width = mf.width;
995 pix->height = mf.height;
997 pix->pixelformat = ffmt->fourcc;
1000 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
1002 if (ffmt->flags & FMT_FLAGS_COMPRESSED)
1003 fimc_get_sensor_frame_desc(fimc->pipeline.subdevs[IDX_SENSOR],
1004 pix->plane_fmt, ffmt->memplanes, true);
1006 mutex_unlock(&fimc->lock);
1007 fimc_md_graph_unlock(fimc);
1012 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
1013 enum fimc_color_fmt color)
1015 bool jpeg = fimc_fmt_is_user_defined(color);
1017 ctx->scaler.enabled = !jpeg;
1018 fimc_ctrls_activate(ctx, !jpeg);
1021 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1023 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1026 static int __fimc_capture_set_format(struct fimc_dev *fimc,
1027 struct v4l2_format *f)
1029 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1030 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1031 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
1032 struct fimc_frame *ff = &ctx->d_frame;
1033 struct fimc_fmt *s_fmt = NULL;
1036 if (vb2_is_busy(&fimc->vid_cap.vbq))
1039 /* Pre-configure format at camera interface input, for JPEG only */
1040 if (fimc_jpeg_fourcc(pix->pixelformat)) {
1041 fimc_capture_try_format(ctx, &pix->width, &pix->height,
1042 NULL, &pix->pixelformat,
1044 ctx->s_frame.f_width = pix->width;
1045 ctx->s_frame.f_height = pix->height;
1047 /* Try the format at the scaler and the DMA output */
1048 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
1049 NULL, &pix->pixelformat,
1050 FIMC_SD_PAD_SOURCE);
1054 /* Update RGB Alpha control state and value range */
1055 fimc_alpha_ctrl_update(ctx);
1057 /* Try to match format at the host and the sensor */
1058 if (!fimc->vid_cap.user_subdev_api) {
1059 mf->code = ff->fmt->mbus_code;
1060 mf->width = pix->width;
1061 mf->height = pix->height;
1062 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
1066 pix->width = mf->width;
1067 pix->height = mf->height;
1070 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
1072 if (ff->fmt->flags & FMT_FLAGS_COMPRESSED) {
1073 ret = fimc_get_sensor_frame_desc(fimc->pipeline.subdevs[IDX_SENSOR],
1074 pix->plane_fmt, ff->fmt->memplanes,
1080 for (i = 0; i < ff->fmt->memplanes; i++) {
1081 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1082 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1085 set_frame_bounds(ff, pix->width, pix->height);
1086 /* Reset the composition rectangle if not yet configured */
1087 if (!(ctx->state & FIMC_COMPOSE))
1088 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1090 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1092 /* Reset cropping and set format at the camera interface input */
1093 if (!fimc->vid_cap.user_subdev_api) {
1094 ctx->s_frame.fmt = s_fmt;
1095 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1096 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1102 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1103 struct v4l2_format *f)
1105 struct fimc_dev *fimc = video_drvdata(file);
1108 fimc_md_graph_lock(fimc);
1109 mutex_lock(&fimc->lock);
1111 * The graph is walked within __fimc_capture_set_format() to set
1112 * the format at subdevs thus the graph mutex needs to be held at
1113 * this point and acquired before the video mutex, to avoid AB-BA
1114 * deadlock when fimc_md_link_notify() is called by other thread.
1115 * Ideally the graph walking and setting format at the whole pipeline
1116 * should be removed from this driver and handled in userspace only.
1118 ret = __fimc_capture_set_format(fimc, f);
1120 mutex_unlock(&fimc->lock);
1121 fimc_md_graph_unlock(fimc);
1125 static int fimc_cap_enum_input(struct file *file, void *priv,
1126 struct v4l2_input *i)
1128 struct fimc_dev *fimc = video_drvdata(file);
1129 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
1134 i->type = V4L2_INPUT_TYPE_CAMERA;
1136 strlcpy(i->name, sd->name, sizeof(i->name));
1140 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1142 return i == 0 ? i : -EINVAL;
1145 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1152 * fimc_pipeline_validate - check for formats inconsistencies
1153 * between source and sink pad of each link
1155 * Return 0 if all formats match or -EPIPE otherwise.
1157 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1159 struct v4l2_subdev_format sink_fmt, src_fmt;
1160 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
1161 struct v4l2_subdev *sd;
1162 struct media_pad *pad;
1165 /* Start with the video capture node pad */
1166 pad = media_entity_remote_source(&vid_cap->vd_pad);
1169 /* FIMC.{N} subdevice */
1170 sd = media_entity_to_v4l2_subdev(pad->entity);
1173 /* Retrieve format at the sink pad */
1174 pad = &sd->entity.pads[0];
1175 if (!(pad->flags & MEDIA_PAD_FL_SINK))
1177 /* Don't call FIMC subdev operation to avoid nested locking */
1178 if (sd == &fimc->vid_cap.subdev) {
1179 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
1180 sink_fmt.format.width = ff->f_width;
1181 sink_fmt.format.height = ff->f_height;
1182 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1184 sink_fmt.pad = pad->index;
1185 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1186 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1187 if (ret < 0 && ret != -ENOIOCTLCMD)
1190 /* Retrieve format at the source pad */
1191 pad = media_entity_remote_source(pad);
1193 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1196 sd = media_entity_to_v4l2_subdev(pad->entity);
1197 src_fmt.pad = pad->index;
1198 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1199 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1200 if (ret < 0 && ret != -ENOIOCTLCMD)
1203 if (src_fmt.format.width != sink_fmt.format.width ||
1204 src_fmt.format.height != sink_fmt.format.height ||
1205 src_fmt.format.code != sink_fmt.format.code)
1208 if (sd == fimc->pipeline.subdevs[IDX_SENSOR] &&
1209 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1210 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1211 struct fimc_frame *frame = &vid_cap->ctx->d_frame;
1214 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1215 frame->fmt->memplanes,
1220 for (i = 0; i < frame->fmt->memplanes; i++)
1221 if (frame->payload[i] < plane_fmt[i].sizeimage)
1228 static int fimc_cap_streamon(struct file *file, void *priv,
1229 enum v4l2_buf_type type)
1231 struct fimc_dev *fimc = video_drvdata(file);
1232 struct fimc_pipeline *p = &fimc->pipeline;
1233 struct fimc_vid_cap *vc = &fimc->vid_cap;
1234 struct media_entity *entity = &vc->vfd.entity;
1237 if (fimc_capture_active(fimc))
1240 ret = media_entity_pipeline_start(entity, p->m_pipeline);
1244 if (vc->user_subdev_api) {
1245 ret = fimc_pipeline_validate(fimc);
1250 ret = vb2_streamon(&vc->vbq, type);
1255 media_entity_pipeline_stop(entity);
1259 static int fimc_cap_streamoff(struct file *file, void *priv,
1260 enum v4l2_buf_type type)
1262 struct fimc_dev *fimc = video_drvdata(file);
1265 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
1268 media_entity_pipeline_stop(&fimc->vid_cap.vfd.entity);
1273 static int fimc_cap_reqbufs(struct file *file, void *priv,
1274 struct v4l2_requestbuffers *reqbufs)
1276 struct fimc_dev *fimc = video_drvdata(file);
1277 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
1280 fimc->vid_cap.reqbufs_count = reqbufs->count;
1284 static int fimc_cap_querybuf(struct file *file, void *priv,
1285 struct v4l2_buffer *buf)
1287 struct fimc_dev *fimc = video_drvdata(file);
1289 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
1292 static int fimc_cap_qbuf(struct file *file, void *priv,
1293 struct v4l2_buffer *buf)
1295 struct fimc_dev *fimc = video_drvdata(file);
1297 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1300 static int fimc_cap_expbuf(struct file *file, void *priv,
1301 struct v4l2_exportbuffer *eb)
1303 struct fimc_dev *fimc = video_drvdata(file);
1305 return vb2_expbuf(&fimc->vid_cap.vbq, eb);
1308 static int fimc_cap_dqbuf(struct file *file, void *priv,
1309 struct v4l2_buffer *buf)
1311 struct fimc_dev *fimc = video_drvdata(file);
1313 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1316 static int fimc_cap_create_bufs(struct file *file, void *priv,
1317 struct v4l2_create_buffers *create)
1319 struct fimc_dev *fimc = video_drvdata(file);
1321 return vb2_create_bufs(&fimc->vid_cap.vbq, create);
1324 static int fimc_cap_prepare_buf(struct file *file, void *priv,
1325 struct v4l2_buffer *b)
1327 struct fimc_dev *fimc = video_drvdata(file);
1329 return vb2_prepare_buf(&fimc->vid_cap.vbq, b);
1332 static int fimc_cap_g_selection(struct file *file, void *fh,
1333 struct v4l2_selection *s)
1335 struct fimc_dev *fimc = video_drvdata(file);
1336 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1337 struct fimc_frame *f = &ctx->s_frame;
1339 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1342 switch (s->target) {
1343 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1344 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1346 case V4L2_SEL_TGT_CROP_BOUNDS:
1347 case V4L2_SEL_TGT_CROP_DEFAULT:
1350 s->r.width = f->o_width;
1351 s->r.height = f->o_height;
1354 case V4L2_SEL_TGT_COMPOSE:
1356 case V4L2_SEL_TGT_CROP:
1357 s->r.left = f->offs_h;
1358 s->r.top = f->offs_v;
1359 s->r.width = f->width;
1360 s->r.height = f->height;
1367 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1368 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1370 if (a->left < b->left || a->top < b->top)
1372 if (a->left + a->width > b->left + b->width)
1374 if (a->top + a->height > b->top + b->height)
1380 static int fimc_cap_s_selection(struct file *file, void *fh,
1381 struct v4l2_selection *s)
1383 struct fimc_dev *fimc = video_drvdata(file);
1384 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1385 struct v4l2_rect rect = s->r;
1386 struct fimc_frame *f;
1387 unsigned long flags;
1389 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1392 if (s->target == V4L2_SEL_TGT_COMPOSE)
1394 else if (s->target == V4L2_SEL_TGT_CROP)
1399 fimc_capture_try_selection(ctx, &rect, s->target);
1401 if (s->flags & V4L2_SEL_FLAG_LE &&
1402 !enclosed_rectangle(&rect, &s->r))
1405 if (s->flags & V4L2_SEL_FLAG_GE &&
1406 !enclosed_rectangle(&s->r, &rect))
1410 spin_lock_irqsave(&fimc->slock, flags);
1411 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1413 spin_unlock_irqrestore(&fimc->slock, flags);
1415 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1419 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1420 .vidioc_querycap = fimc_vidioc_querycap_capture,
1422 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1423 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1424 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1425 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1427 .vidioc_reqbufs = fimc_cap_reqbufs,
1428 .vidioc_querybuf = fimc_cap_querybuf,
1430 .vidioc_qbuf = fimc_cap_qbuf,
1431 .vidioc_dqbuf = fimc_cap_dqbuf,
1432 .vidioc_expbuf = fimc_cap_expbuf,
1434 .vidioc_prepare_buf = fimc_cap_prepare_buf,
1435 .vidioc_create_bufs = fimc_cap_create_bufs,
1437 .vidioc_streamon = fimc_cap_streamon,
1438 .vidioc_streamoff = fimc_cap_streamoff,
1440 .vidioc_g_selection = fimc_cap_g_selection,
1441 .vidioc_s_selection = fimc_cap_s_selection,
1443 .vidioc_enum_input = fimc_cap_enum_input,
1444 .vidioc_s_input = fimc_cap_s_input,
1445 .vidioc_g_input = fimc_cap_g_input,
1448 /* Capture subdev media entity operations */
1449 static int fimc_link_setup(struct media_entity *entity,
1450 const struct media_pad *local,
1451 const struct media_pad *remote, u32 flags)
1453 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1454 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1456 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1459 if (WARN_ON(fimc == NULL))
1462 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1463 local->entity->name, remote->entity->name, flags,
1464 fimc->vid_cap.input);
1466 if (flags & MEDIA_LNK_FL_ENABLED) {
1467 if (fimc->vid_cap.input != 0)
1469 fimc->vid_cap.input = sd->grp_id;
1473 fimc->vid_cap.input = 0;
1477 static const struct media_entity_operations fimc_sd_media_ops = {
1478 .link_setup = fimc_link_setup,
1482 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1483 * @sd: pointer to a subdev generating the notification
1484 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1485 * @arg: pointer to an u32 type integer that stores the frame payload value
1487 * The End Of Frame notification sent by sensor subdev in its still capture
1488 * mode. If there is only a single VSYNC generated by the sensor at the
1489 * beginning of a frame transmission, FIMC does not issue the LastIrq
1490 * (end of frame) interrupt. And this notification is used to complete the
1491 * frame capture and returning a buffer to user-space. Subdev drivers should
1492 * call this notification from their last 'End of frame capture' interrupt.
1494 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1497 struct fimc_sensor_info *sensor;
1498 struct fimc_vid_buffer *buf;
1499 struct fimc_md *fmd;
1500 struct fimc_dev *fimc;
1501 unsigned long flags;
1506 sensor = v4l2_get_subdev_hostdata(sd);
1507 fmd = entity_to_fimc_mdev(&sd->entity);
1509 spin_lock_irqsave(&fmd->slock, flags);
1510 fimc = sensor ? sensor->host : NULL;
1512 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1513 test_bit(ST_CAPT_PEND, &fimc->state)) {
1514 unsigned long irq_flags;
1515 spin_lock_irqsave(&fimc->slock, irq_flags);
1516 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1517 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1518 struct fimc_vid_buffer, list);
1519 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1521 fimc_capture_irq_handler(fimc, 1);
1522 fimc_deactivate_capture(fimc);
1523 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1525 spin_unlock_irqrestore(&fmd->slock, flags);
1528 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1529 struct v4l2_subdev_fh *fh,
1530 struct v4l2_subdev_mbus_code_enum *code)
1532 struct fimc_fmt *fmt;
1534 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1537 code->code = fmt->mbus_code;
1541 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1542 struct v4l2_subdev_fh *fh,
1543 struct v4l2_subdev_format *fmt)
1545 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1546 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1547 struct v4l2_mbus_framefmt *mf;
1548 struct fimc_frame *ff;
1550 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1551 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1556 mf->colorspace = V4L2_COLORSPACE_JPEG;
1557 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1559 mutex_lock(&fimc->lock);
1560 /* The pixel code is same on both input and output pad */
1561 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1562 mf->code = ctx->s_frame.fmt->mbus_code;
1563 mf->width = ff->f_width;
1564 mf->height = ff->f_height;
1565 mutex_unlock(&fimc->lock);
1570 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1571 struct v4l2_subdev_fh *fh,
1572 struct v4l2_subdev_format *fmt)
1574 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1575 struct v4l2_mbus_framefmt *mf = &fmt->format;
1576 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1577 struct fimc_frame *ff;
1578 struct fimc_fmt *ffmt;
1580 dbg("pad%d: code: 0x%x, %dx%d",
1581 fmt->pad, mf->code, mf->width, mf->height);
1583 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1584 vb2_is_busy(&fimc->vid_cap.vbq))
1587 mutex_lock(&fimc->lock);
1588 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1589 &mf->code, NULL, fmt->pad);
1590 mutex_unlock(&fimc->lock);
1591 mf->colorspace = V4L2_COLORSPACE_JPEG;
1593 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1594 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1598 /* There must be a bug in the driver if this happens */
1599 if (WARN_ON(ffmt == NULL))
1602 /* Update RGB Alpha control state and value range */
1603 fimc_alpha_ctrl_update(ctx);
1605 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1607 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1608 &ctx->s_frame : &ctx->d_frame;
1610 mutex_lock(&fimc->lock);
1611 set_frame_bounds(ff, mf->width, mf->height);
1612 fimc->vid_cap.mf = *mf;
1615 /* Reset the crop rectangle if required. */
1616 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1617 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1619 if (fmt->pad == FIMC_SD_PAD_SINK)
1620 ctx->state &= ~FIMC_COMPOSE;
1621 mutex_unlock(&fimc->lock);
1625 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1626 struct v4l2_subdev_fh *fh,
1627 struct v4l2_subdev_selection *sel)
1629 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1630 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1631 struct fimc_frame *f = &ctx->s_frame;
1632 struct v4l2_rect *r = &sel->r;
1633 struct v4l2_rect *try_sel;
1635 if (sel->pad != FIMC_SD_PAD_SINK)
1638 mutex_lock(&fimc->lock);
1640 switch (sel->target) {
1641 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1643 case V4L2_SEL_TGT_CROP_BOUNDS:
1644 r->width = f->o_width;
1645 r->height = f->o_height;
1648 mutex_unlock(&fimc->lock);
1651 case V4L2_SEL_TGT_CROP:
1652 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1654 case V4L2_SEL_TGT_COMPOSE:
1655 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1659 mutex_unlock(&fimc->lock);
1663 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1666 r->left = f->offs_h;
1668 r->width = f->width;
1669 r->height = f->height;
1672 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1673 sel->pad, r->left, r->top, r->width, r->height,
1674 f->f_width, f->f_height);
1676 mutex_unlock(&fimc->lock);
1680 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1681 struct v4l2_subdev_fh *fh,
1682 struct v4l2_subdev_selection *sel)
1684 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1685 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1686 struct fimc_frame *f = &ctx->s_frame;
1687 struct v4l2_rect *r = &sel->r;
1688 struct v4l2_rect *try_sel;
1689 unsigned long flags;
1691 if (sel->pad != FIMC_SD_PAD_SINK)
1694 mutex_lock(&fimc->lock);
1695 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1697 switch (sel->target) {
1698 case V4L2_SEL_TGT_CROP:
1699 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1701 case V4L2_SEL_TGT_COMPOSE:
1702 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1706 mutex_unlock(&fimc->lock);
1710 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1713 spin_lock_irqsave(&fimc->slock, flags);
1714 set_frame_crop(f, r->left, r->top, r->width, r->height);
1715 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1716 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1717 ctx->state |= FIMC_COMPOSE;
1718 spin_unlock_irqrestore(&fimc->slock, flags);
1721 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1722 r->width, r->height);
1724 mutex_unlock(&fimc->lock);
1728 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1729 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1730 .get_selection = fimc_subdev_get_selection,
1731 .set_selection = fimc_subdev_set_selection,
1732 .get_fmt = fimc_subdev_get_fmt,
1733 .set_fmt = fimc_subdev_set_fmt,
1736 static struct v4l2_subdev_ops fimc_subdev_ops = {
1737 .pad = &fimc_subdev_pad_ops,
1740 /* Set default format at the sensor and host interface */
1741 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1743 struct v4l2_format fmt = {
1744 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1748 .pixelformat = V4L2_PIX_FMT_YUYV,
1749 .field = V4L2_FIELD_NONE,
1750 .colorspace = V4L2_COLORSPACE_JPEG,
1754 return __fimc_capture_set_format(fimc, &fmt);
1757 /* fimc->lock must be already initialized */
1758 static int fimc_register_capture_device(struct fimc_dev *fimc,
1759 struct v4l2_device *v4l2_dev)
1761 struct video_device *vfd = &fimc->vid_cap.vfd;
1762 struct fimc_vid_cap *vid_cap;
1763 struct fimc_ctx *ctx;
1764 struct vb2_queue *q;
1767 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1771 ctx->fimc_dev = fimc;
1772 ctx->in_path = FIMC_IO_CAMERA;
1773 ctx->out_path = FIMC_IO_DMA;
1774 ctx->state = FIMC_CTX_CAP;
1775 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1776 ctx->d_frame.fmt = ctx->s_frame.fmt;
1778 memset(vfd, 0, sizeof(*vfd));
1779 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1781 vfd->fops = &fimc_capture_fops;
1782 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1783 vfd->v4l2_dev = v4l2_dev;
1785 vfd->release = video_device_release_empty;
1786 vfd->lock = &fimc->lock;
1788 video_set_drvdata(vfd, fimc);
1790 vid_cap = &fimc->vid_cap;
1791 vid_cap->active_buf_cnt = 0;
1792 vid_cap->reqbufs_count = 0;
1793 vid_cap->refcnt = 0;
1795 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1796 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1799 q = &fimc->vid_cap.vbq;
1800 memset(q, 0, sizeof(*q));
1801 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1802 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1803 q->drv_priv = fimc->vid_cap.ctx;
1804 q->ops = &fimc_capture_qops;
1805 q->mem_ops = &vb2_dma_contig_memops;
1806 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1807 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1809 ret = vb2_queue_init(q);
1813 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1814 ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
1818 * For proper order of acquiring/releasing the video
1819 * and the graph mutex.
1821 v4l2_disable_ioctl_locking(vfd, VIDIOC_TRY_FMT);
1822 v4l2_disable_ioctl_locking(vfd, VIDIOC_S_FMT);
1824 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1828 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1829 vfd->name, video_device_node_name(vfd));
1831 vfd->ctrl_handler = &ctx->ctrls.handler;
1835 media_entity_cleanup(&vfd->entity);
1841 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1843 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1849 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1853 fimc->pipeline_ops = v4l2_get_subdev_hostdata(sd);
1855 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1857 fimc_unregister_m2m_device(fimc);
1858 fimc->pipeline_ops = NULL;
1864 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1866 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1871 fimc_unregister_m2m_device(fimc);
1873 if (video_is_registered(&fimc->vid_cap.vfd)) {
1874 video_unregister_device(&fimc->vid_cap.vfd);
1875 media_entity_cleanup(&fimc->vid_cap.vfd.entity);
1876 fimc->pipeline_ops = NULL;
1878 kfree(fimc->vid_cap.ctx);
1879 fimc->vid_cap.ctx = NULL;
1882 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1883 .registered = fimc_capture_subdev_registered,
1884 .unregistered = fimc_capture_subdev_unregistered,
1887 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1889 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1892 v4l2_subdev_init(sd, &fimc_subdev_ops);
1893 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1894 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1896 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1897 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1898 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1899 fimc->vid_cap.sd_pads, 0);
1903 sd->entity.ops = &fimc_sd_media_ops;
1904 sd->internal_ops = &fimc_capture_sd_internal_ops;
1905 v4l2_set_subdevdata(sd, fimc);
1909 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1911 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1913 v4l2_device_unregister_subdev(sd);
1914 media_entity_cleanup(&sd->entity);
1915 v4l2_set_subdevdata(sd, NULL);