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1/*
2 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
3 *
4 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
5 * Sylwester Nawrocki <s.nawrocki@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/types.h>
15#include <linux/errno.h>
16#include <linux/bug.h>
17#include <linux/interrupt.h>
18#include <linux/device.h>
19#include <linux/pm_runtime.h>
20#include <linux/list.h>
21#include <linux/slab.h>
22
23#include <linux/videodev2.h>
24#include <media/v4l2-device.h>
25#include <media/v4l2-ioctl.h>
26#include <media/v4l2-mem2mem.h>
27#include <media/videobuf2-core.h>
28#include <media/videobuf2-dma-contig.h>
29
30#include "fimc-mdevice.h"
31#include "fimc-core.h"
32#include "fimc-reg.h"
33
34static int fimc_capture_hw_init(struct fimc_dev *fimc)
35{
36 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
37 struct fimc_pipeline *p = &fimc->pipeline;
38 struct fimc_sensor_info *sensor;
39 unsigned long flags;
40 int ret = 0;
41
42 if (p->subdevs[IDX_SENSOR] == NULL || ctx == NULL)
43 return -ENXIO;
44 if (ctx->s_frame.fmt == NULL)
45 return -EINVAL;
46
47 sensor = v4l2_get_subdev_hostdata(p->subdevs[IDX_SENSOR]);
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, 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);
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->variant->has_alpha)
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_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_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_s_stream(&fimc->pipeline, 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 *
148 * To be called from within the interrupt handler with fimc.slock
149 * spinlock held. It updates the camera pixel crop, rotation and
150 * image flip in H/W.
151 */
152static int fimc_capture_config_update(struct fimc_ctx *ctx)
153{
154 struct fimc_dev *fimc = ctx->fimc_dev;
155 int ret;
156
157 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
158
159 ret = fimc_set_scaler_info(ctx);
160 if (ret)
161 return ret;
162
163 fimc_hw_set_prescaler(ctx);
164 fimc_hw_set_mainscaler(ctx);
165 fimc_hw_set_target_format(ctx);
166 fimc_hw_set_rotation(ctx);
167 fimc_hw_set_effect(ctx);
168 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
169 fimc_hw_set_out_dma(ctx);
170 if (fimc->variant->has_alpha)
171 fimc_hw_set_rgb_alpha(ctx);
172
173 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
174 return ret;
175}
176
177void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
178{
179 struct fimc_vid_cap *cap = &fimc->vid_cap;
180 struct fimc_vid_buffer *v_buf;
181 struct timeval *tv;
182 struct timespec ts;
183
184 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
185 wake_up(&fimc->irq_queue);
186 goto done;
187 }
188
189 if (!list_empty(&cap->active_buf_q) &&
190 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
191 ktime_get_real_ts(&ts);
192
193 v_buf = fimc_active_queue_pop(cap);
194
195 tv = &v_buf->vb.v4l2_buf.timestamp;
196 tv->tv_sec = ts.tv_sec;
197 tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
198 v_buf->vb.v4l2_buf.sequence = cap->frame_count++;
199
200 vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE);
201 }
202
203 if (!list_empty(&cap->pending_buf_q)) {
204
205 v_buf = fimc_pending_queue_pop(cap);
206 fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index);
207 v_buf->index = cap->buf_index;
208
209 /* Move the buffer to the capture active queue */
210 fimc_active_queue_add(cap, v_buf);
211
212 dbg("next frame: %d, done frame: %d",
213 fimc_hw_get_frame_index(fimc), v_buf->index);
214
215 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
216 cap->buf_index = 0;
217 }
218
219 if (cap->active_buf_cnt == 0) {
220 if (deq_buf)
221 clear_bit(ST_CAPT_RUN, &fimc->state);
222
223 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
224 cap->buf_index = 0;
225 } else {
226 set_bit(ST_CAPT_RUN, &fimc->state);
227 }
228
229 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
230 fimc_capture_config_update(cap->ctx);
231done:
232 if (cap->active_buf_cnt == 1) {
233 fimc_deactivate_capture(fimc);
234 clear_bit(ST_CAPT_STREAM, &fimc->state);
235 }
236
237 dbg("frame: %d, active_buf_cnt: %d",
238 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
239}
240
241
242static int start_streaming(struct vb2_queue *q, unsigned int count)
243{
244 struct fimc_ctx *ctx = q->drv_priv;
245 struct fimc_dev *fimc = ctx->fimc_dev;
246 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
247 int min_bufs;
248 int ret;
249
250 vid_cap->frame_count = 0;
251
252 ret = fimc_capture_hw_init(fimc);
253 if (ret) {
254 fimc_capture_state_cleanup(fimc, false);
255 return ret;
256 }
257
258 set_bit(ST_CAPT_PEND, &fimc->state);
259
260 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
261
262 if (vid_cap->active_buf_cnt >= min_bufs &&
263 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
264 fimc_activate_capture(ctx);
265
266 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
267 fimc_pipeline_s_stream(&fimc->pipeline, 1);
268 }
269
270 return 0;
271}
272
273static int stop_streaming(struct vb2_queue *q)
274{
275 struct fimc_ctx *ctx = q->drv_priv;
276 struct fimc_dev *fimc = ctx->fimc_dev;
277
278 if (!fimc_capture_active(fimc))
279 return -EINVAL;
280
281 return fimc_stop_capture(fimc, false);
282}
283
284int fimc_capture_suspend(struct fimc_dev *fimc)
285{
286 bool suspend = fimc_capture_busy(fimc);
287
288 int ret = fimc_stop_capture(fimc, suspend);
289 if (ret)
290 return ret;
291 return fimc_pipeline_shutdown(&fimc->pipeline);
292}
293
294static void buffer_queue(struct vb2_buffer *vb);
295
296int fimc_capture_resume(struct fimc_dev *fimc)
297{
298 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
299 struct fimc_vid_buffer *buf;
300 int i;
301
302 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
303 return 0;
304
305 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
306 vid_cap->buf_index = 0;
307 fimc_pipeline_initialize(&fimc->pipeline, &vid_cap->vfd->entity,
308 false);
309 fimc_capture_hw_init(fimc);
310
311 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
312
313 for (i = 0; i < vid_cap->reqbufs_count; i++) {
314 if (list_empty(&vid_cap->pending_buf_q))
315 break;
316 buf = fimc_pending_queue_pop(vid_cap);
317 buffer_queue(&buf->vb);
318 }
319 return 0;
320
321}
322
323static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
324 unsigned int *num_buffers, unsigned int *num_planes,
325 unsigned int sizes[], void *allocators[])
326{
327 const struct v4l2_pix_format_mplane *pixm = NULL;
328 struct fimc_ctx *ctx = vq->drv_priv;
329 struct fimc_frame *frame = &ctx->d_frame;
330 struct fimc_fmt *fmt = frame->fmt;
331 unsigned long wh;
332 int i;
333
334 if (pfmt) {
335 pixm = &pfmt->fmt.pix_mp;
336 fmt = fimc_find_format(&pixm->pixelformat, NULL,
337 FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1);
338 wh = pixm->width * pixm->height;
339 } else {
340 wh = frame->f_width * frame->f_height;
341 }
342
343 if (fmt == NULL)
344 return -EINVAL;
345
346 *num_planes = fmt->memplanes;
347
348 for (i = 0; i < fmt->memplanes; i++) {
349 unsigned int size = (wh * fmt->depth[i]) / 8;
350 if (pixm)
351 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
352 else
353 sizes[i] = max_t(u32, size, frame->payload[i]);
354
355 allocators[i] = ctx->fimc_dev->alloc_ctx;
356 }
357
358 return 0;
359}
360
361static int buffer_prepare(struct vb2_buffer *vb)
362{
363 struct vb2_queue *vq = vb->vb2_queue;
364 struct fimc_ctx *ctx = vq->drv_priv;
365 int i;
366
367 if (ctx->d_frame.fmt == NULL)
368 return -EINVAL;
369
370 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
371 unsigned long size = ctx->d_frame.payload[i];
372
373 if (vb2_plane_size(vb, i) < size) {
374 v4l2_err(ctx->fimc_dev->vid_cap.vfd,
375 "User buffer too small (%ld < %ld)\n",
376 vb2_plane_size(vb, i), size);
377 return -EINVAL;
378 }
379 vb2_set_plane_payload(vb, i, size);
380 }
381
382 return 0;
383}
384
385static void buffer_queue(struct vb2_buffer *vb)
386{
387 struct fimc_vid_buffer *buf
388 = container_of(vb, struct fimc_vid_buffer, vb);
389 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
390 struct fimc_dev *fimc = ctx->fimc_dev;
391 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
392 unsigned long flags;
393 int min_bufs;
394
395 spin_lock_irqsave(&fimc->slock, flags);
396 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
397
398 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
399 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
400 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
401 /* Setup the buffer directly for processing. */
402 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
403 vid_cap->buf_index;
404
405 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
406 buf->index = vid_cap->buf_index;
407 fimc_active_queue_add(vid_cap, buf);
408
409 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
410 vid_cap->buf_index = 0;
411 } else {
412 fimc_pending_queue_add(vid_cap, buf);
413 }
414
415 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
416
417
418 if (vb2_is_streaming(&vid_cap->vbq) &&
419 vid_cap->active_buf_cnt >= min_bufs &&
420 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
421 fimc_activate_capture(ctx);
422 spin_unlock_irqrestore(&fimc->slock, flags);
423
424 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
425 fimc_pipeline_s_stream(&fimc->pipeline, 1);
426 return;
427 }
428 spin_unlock_irqrestore(&fimc->slock, flags);
429}
430
431static void fimc_lock(struct vb2_queue *vq)
432{
433 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
434 mutex_lock(&ctx->fimc_dev->lock);
435}
436
437static void fimc_unlock(struct vb2_queue *vq)
438{
439 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
440 mutex_unlock(&ctx->fimc_dev->lock);
441}
442
443static struct vb2_ops fimc_capture_qops = {
444 .queue_setup = queue_setup,
445 .buf_prepare = buffer_prepare,
446 .buf_queue = buffer_queue,
447 .wait_prepare = fimc_unlock,
448 .wait_finish = fimc_lock,
449 .start_streaming = start_streaming,
450 .stop_streaming = stop_streaming,
451};
452
453/**
454 * fimc_capture_ctrls_create - initialize the control handler
455 * Initialize the capture video node control handler and fill it
456 * with the FIMC controls. Inherit any sensor's controls if the
457 * 'user_subdev_api' flag is false (default behaviour).
458 * This function need to be called with the graph mutex held.
459 */
460int fimc_capture_ctrls_create(struct fimc_dev *fimc)
461{
462 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
463 int ret;
464
465 if (WARN_ON(vid_cap->ctx == NULL))
466 return -ENXIO;
467 if (vid_cap->ctx->ctrls.ready)
468 return 0;
469
470 ret = fimc_ctrls_create(vid_cap->ctx);
471 if (ret || vid_cap->user_subdev_api || !vid_cap->ctx->ctrls.ready)
472 return ret;
473
474 return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrls.handler,
475 fimc->pipeline.subdevs[IDX_SENSOR]->ctrl_handler);
476}
477
478static int fimc_capture_set_default_format(struct fimc_dev *fimc);
479
480static int fimc_capture_open(struct file *file)
481{
482 struct fimc_dev *fimc = video_drvdata(file);
483 int ret;
484
485 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
486
487 if (fimc_m2m_active(fimc))
488 return -EBUSY;
489
490 set_bit(ST_CAPT_BUSY, &fimc->state);
491 ret = pm_runtime_get_sync(&fimc->pdev->dev);
492 if (ret < 0)
493 return ret;
494
495 ret = v4l2_fh_open(file);
496 if (ret)
497 return ret;
498
499 if (++fimc->vid_cap.refcnt != 1)
500 return 0;
501
502 ret = fimc_pipeline_initialize(&fimc->pipeline,
503 &fimc->vid_cap.vfd->entity, true);
504 if (ret < 0) {
505 clear_bit(ST_CAPT_BUSY, &fimc->state);
506 pm_runtime_put_sync(&fimc->pdev->dev);
507 fimc->vid_cap.refcnt--;
508 v4l2_fh_release(file);
509 return ret;
510 }
511 ret = fimc_capture_ctrls_create(fimc);
512
513 if (!ret && !fimc->vid_cap.user_subdev_api)
514 ret = fimc_capture_set_default_format(fimc);
515
516 return ret;
517}
518
519static int fimc_capture_close(struct file *file)
520{
521 struct fimc_dev *fimc = video_drvdata(file);
522
523 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
524
525 if (--fimc->vid_cap.refcnt == 0) {
526 clear_bit(ST_CAPT_BUSY, &fimc->state);
527 fimc_stop_capture(fimc, false);
528 fimc_pipeline_shutdown(&fimc->pipeline);
529 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
530 }
531
532 pm_runtime_put(&fimc->pdev->dev);
533
534 if (fimc->vid_cap.refcnt == 0) {
535 vb2_queue_release(&fimc->vid_cap.vbq);
536 fimc_ctrls_delete(fimc->vid_cap.ctx);
537 }
538 return v4l2_fh_release(file);
539}
540
541static unsigned int fimc_capture_poll(struct file *file,
542 struct poll_table_struct *wait)
543{
544 struct fimc_dev *fimc = video_drvdata(file);
545
546 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
547}
548
549static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
550{
551 struct fimc_dev *fimc = video_drvdata(file);
552
553 return vb2_mmap(&fimc->vid_cap.vbq, vma);
554}
555
556static const struct v4l2_file_operations fimc_capture_fops = {
557 .owner = THIS_MODULE,
558 .open = fimc_capture_open,
559 .release = fimc_capture_close,
560 .poll = fimc_capture_poll,
561 .unlocked_ioctl = video_ioctl2,
562 .mmap = fimc_capture_mmap,
563};
564
565/*
566 * Format and crop negotiation helpers
567 */
568
569static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
570 u32 *width, u32 *height,
571 u32 *code, u32 *fourcc, int pad)
572{
573 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
574 struct fimc_dev *fimc = ctx->fimc_dev;
575 struct fimc_variant *var = fimc->variant;
576 struct fimc_pix_limit *pl = var->pix_limit;
577 struct fimc_frame *dst = &ctx->d_frame;
578 u32 depth, min_w, max_w, min_h, align_h = 3;
579 u32 mask = FMT_FLAGS_CAM;
580 struct fimc_fmt *ffmt;
581
582 /* Color conversion from/to JPEG is not supported */
583 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
584 fimc_fmt_is_jpeg(ctx->s_frame.fmt->color))
585 *code = V4L2_MBUS_FMT_JPEG_1X8;
586
587 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
588 mask |= FMT_FLAGS_M2M;
589
590 ffmt = fimc_find_format(fourcc, code, mask, 0);
591 if (WARN_ON(!ffmt))
592 return NULL;
593 if (code)
594 *code = ffmt->mbus_code;
595 if (fourcc)
596 *fourcc = ffmt->fourcc;
597
598 if (pad == FIMC_SD_PAD_SINK) {
599 max_w = fimc_fmt_is_jpeg(ffmt->color) ?
600 pl->scaler_dis_w : pl->scaler_en_w;
601 /* Apply the camera input interface pixel constraints */
602 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
603 height, max_t(u32, *height, 32),
604 FIMC_CAMIF_MAX_HEIGHT,
605 fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1,
606 0);
607 return ffmt;
608 }
609 /* Can't scale or crop in transparent (JPEG) transfer mode */
610 if (fimc_fmt_is_jpeg(ffmt->color)) {
611 *width = ctx->s_frame.f_width;
612 *height = ctx->s_frame.f_height;
613 return ffmt;
614 }
615 /* Apply the scaler and the output DMA constraints */
616 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
617 if (ctx->state & FIMC_COMPOSE) {
618 min_w = dst->offs_h + dst->width;
619 min_h = dst->offs_v + dst->height;
620 } else {
621 min_w = var->min_out_pixsize;
622 min_h = var->min_out_pixsize;
623 }
624 if (var->min_vsize_align == 1 && !rotation)
625 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
626
627 depth = fimc_get_format_depth(ffmt);
628 v4l_bound_align_image(width, min_w, max_w,
629 ffs(var->min_out_pixsize) - 1,
630 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
631 align_h,
632 64/(ALIGN(depth, 8)));
633
634 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
635 pad, code ? *code : 0, *width, *height,
636 dst->f_width, dst->f_height);
637
638 return ffmt;
639}
640
641static void fimc_capture_try_selection(struct fimc_ctx *ctx,
642 struct v4l2_rect *r,
643 int target)
644{
645 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
646 struct fimc_dev *fimc = ctx->fimc_dev;
647 struct fimc_variant *var = fimc->variant;
648 struct fimc_pix_limit *pl = var->pix_limit;
649 struct fimc_frame *sink = &ctx->s_frame;
650 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
651 u32 align_sz = 0, align_h = 4;
652 u32 max_sc_h, max_sc_v;
653
654 /* In JPEG transparent transfer mode cropping is not supported */
655 if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) {
656 r->width = sink->f_width;
657 r->height = sink->f_height;
658 r->left = r->top = 0;
659 return;
660 }
661 if (target == V4L2_SEL_TGT_COMPOSE_ACTIVE) {
662 if (ctx->rotation != 90 && ctx->rotation != 270)
663 align_h = 1;
664 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
665 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
666 min_sz = var->min_out_pixsize;
667 } else {
668 u32 depth = fimc_get_format_depth(sink->fmt);
669 align_sz = 64/ALIGN(depth, 8);
670 min_sz = var->min_inp_pixsize;
671 min_w = min_h = min_sz;
672 max_sc_h = max_sc_v = 1;
673 }
674 /*
675 * For the compose rectangle the following constraints must be met:
676 * - it must fit in the sink pad format rectangle (f_width/f_height);
677 * - maximum downscaling ratio is 64;
678 * - maximum crop size depends if the rotator is used or not;
679 * - the sink pad format width/height must be 4 multiple of the
680 * prescaler ratios determined by sink pad size and source pad crop,
681 * the prescaler ratio is returned by fimc_get_scaler_factor().
682 */
683 max_w = min_t(u32,
684 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
685 rotate ? sink->f_height : sink->f_width);
686 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
687
688 if (target == V4L2_SEL_TGT_COMPOSE_ACTIVE) {
689 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
690 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
691 if (rotate) {
692 swap(max_sc_h, max_sc_v);
693 swap(min_w, min_h);
694 }
695 }
696 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
697 &r->height, min_h, max_h, align_h,
698 align_sz);
699 /* Adjust left/top if crop/compose rectangle is out of bounds */
700 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
701 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
702 r->left = round_down(r->left, var->hor_offs_align);
703
704 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
705 target, r->left, r->top, r->width, r->height,
706 sink->f_width, sink->f_height);
707}
708
709/*
710 * The video node ioctl operations
711 */
712static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
713 struct v4l2_capability *cap)
714{
715 struct fimc_dev *fimc = video_drvdata(file);
716
717 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
718 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
719 cap->bus_info[0] = 0;
720 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
721
722 return 0;
723}
724
725static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
726 struct v4l2_fmtdesc *f)
727{
728 struct fimc_fmt *fmt;
729
730 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
731 f->index);
732 if (!fmt)
733 return -EINVAL;
734 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
735 f->pixelformat = fmt->fourcc;
736 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
737 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
738 return 0;
739}
740
741/**
742 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
743 * elements
744 * @ctx: FIMC capture context
745 * @tfmt: media bus format to try/set on subdevs
746 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
747 * @set: true to set format on subdevs, false to try only
748 */
749static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
750 struct v4l2_mbus_framefmt *tfmt,
751 struct fimc_fmt **fmt_id,
752 bool set)
753{
754 struct fimc_dev *fimc = ctx->fimc_dev;
755 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
756 struct v4l2_subdev *csis = fimc->pipeline.subdevs[IDX_CSIS];
757 struct v4l2_subdev_format sfmt;
758 struct v4l2_mbus_framefmt *mf = &sfmt.format;
759 struct fimc_fmt *ffmt = NULL;
760 int ret, i = 0;
761
762 if (WARN_ON(!sd || !tfmt))
763 return -EINVAL;
764
765 memset(&sfmt, 0, sizeof(sfmt));
766 sfmt.format = *tfmt;
767
768 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
769 while (1) {
770 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
771 FMT_FLAGS_CAM, i++);
772 if (ffmt == NULL) {
773 /*
774 * Notify user-space if common pixel code for
775 * host and sensor does not exist.
776 */
777 return -EINVAL;
778 }
779 mf->code = tfmt->code = ffmt->mbus_code;
780
781 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
782 if (ret)
783 return ret;
784 if (mf->code != tfmt->code) {
785 mf->code = 0;
786 continue;
787 }
788 if (mf->width != tfmt->width || mf->height != tfmt->height) {
789 u32 fcc = ffmt->fourcc;
790 tfmt->width = mf->width;
791 tfmt->height = mf->height;
792 ffmt = fimc_capture_try_format(ctx,
793 &tfmt->width, &tfmt->height,
794 NULL, &fcc, FIMC_SD_PAD_SOURCE);
795 if (ffmt && ffmt->mbus_code)
796 mf->code = ffmt->mbus_code;
797 if (mf->width != tfmt->width ||
798 mf->height != tfmt->height)
799 continue;
800 tfmt->code = mf->code;
801 }
802 if (csis)
803 ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
804
805 if (mf->code == tfmt->code &&
806 mf->width == tfmt->width && mf->height == tfmt->height)
807 break;
808 }
809
810 if (fmt_id && ffmt)
811 *fmt_id = ffmt;
812 *tfmt = *mf;
813
814 dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt);
815 return 0;
816}
817
818static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
819 struct v4l2_format *f)
820{
821 struct fimc_dev *fimc = video_drvdata(file);
822 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
823
824 return fimc_fill_format(&ctx->d_frame, f);
825}
826
827static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
828 struct v4l2_format *f)
829{
830 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
831 struct fimc_dev *fimc = video_drvdata(file);
832 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
833 struct v4l2_mbus_framefmt mf;
834 struct fimc_fmt *ffmt = NULL;
835
836 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
837 fimc_capture_try_format(ctx, &pix->width, &pix->height,
838 NULL, &pix->pixelformat,
839 FIMC_SD_PAD_SINK);
840 ctx->s_frame.f_width = pix->width;
841 ctx->s_frame.f_height = pix->height;
842 }
843 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
844 NULL, &pix->pixelformat,
845 FIMC_SD_PAD_SOURCE);
846 if (!ffmt)
847 return -EINVAL;
848
849 if (!fimc->vid_cap.user_subdev_api) {
850 mf.width = pix->width;
851 mf.height = pix->height;
852 mf.code = ffmt->mbus_code;
853 fimc_md_graph_lock(fimc);
854 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
855 fimc_md_graph_unlock(fimc);
856
857 pix->width = mf.width;
858 pix->height = mf.height;
859 if (ffmt)
860 pix->pixelformat = ffmt->fourcc;
861 }
862
863 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
864 return 0;
865}
866
867static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg)
868{
869 ctx->scaler.enabled = !jpeg;
870 fimc_ctrls_activate(ctx, !jpeg);
871
872 if (jpeg)
873 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
874 else
875 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
876}
877
878static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f)
879{
880 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
881 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
882 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
883 struct fimc_frame *ff = &ctx->d_frame;
884 struct fimc_fmt *s_fmt = NULL;
885 int ret, i;
886
887 if (vb2_is_busy(&fimc->vid_cap.vbq))
888 return -EBUSY;
889
890 /* Pre-configure format at camera interface input, for JPEG only */
891 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
892 fimc_capture_try_format(ctx, &pix->width, &pix->height,
893 NULL, &pix->pixelformat,
894 FIMC_SD_PAD_SINK);
895 ctx->s_frame.f_width = pix->width;
896 ctx->s_frame.f_height = pix->height;
897 }
898 /* Try the format at the scaler and the DMA output */
899 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
900 NULL, &pix->pixelformat,
901 FIMC_SD_PAD_SOURCE);
902 if (!ff->fmt)
903 return -EINVAL;
904
905 /* Update RGB Alpha control state and value range */
906 fimc_alpha_ctrl_update(ctx);
907
908 /* Try to match format at the host and the sensor */
909 if (!fimc->vid_cap.user_subdev_api) {
910 mf->code = ff->fmt->mbus_code;
911 mf->width = pix->width;
912 mf->height = pix->height;
913
914 fimc_md_graph_lock(fimc);
915 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
916 fimc_md_graph_unlock(fimc);
917 if (ret)
918 return ret;
919 pix->width = mf->width;
920 pix->height = mf->height;
921 }
922
923 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
924 for (i = 0; i < ff->fmt->colplanes; i++)
925 ff->payload[i] = pix->plane_fmt[i].sizeimage;
926
927 set_frame_bounds(ff, pix->width, pix->height);
928 /* Reset the composition rectangle if not yet configured */
929 if (!(ctx->state & FIMC_COMPOSE))
930 set_frame_crop(ff, 0, 0, pix->width, pix->height);
931
932 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color));
933
934 /* Reset cropping and set format at the camera interface input */
935 if (!fimc->vid_cap.user_subdev_api) {
936 ctx->s_frame.fmt = s_fmt;
937 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
938 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
939 }
940
941 return ret;
942}
943
944static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
945 struct v4l2_format *f)
946{
947 struct fimc_dev *fimc = video_drvdata(file);
948
949 return fimc_capture_set_format(fimc, f);
950}
951
952static int fimc_cap_enum_input(struct file *file, void *priv,
953 struct v4l2_input *i)
954{
955 struct fimc_dev *fimc = video_drvdata(file);
956 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
957
958 if (i->index != 0)
959 return -EINVAL;
960
961 i->type = V4L2_INPUT_TYPE_CAMERA;
962 if (sd)
963 strlcpy(i->name, sd->name, sizeof(i->name));
964 return 0;
965}
966
967static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
968{
969 return i == 0 ? i : -EINVAL;
970}
971
972static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
973{
974 *i = 0;
975 return 0;
976}
977
978/**
979 * fimc_pipeline_validate - check for formats inconsistencies
980 * between source and sink pad of each link
981 *
982 * Return 0 if all formats match or -EPIPE otherwise.
983 */
984static int fimc_pipeline_validate(struct fimc_dev *fimc)
985{
986 struct v4l2_subdev_format sink_fmt, src_fmt;
987 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
988 struct v4l2_subdev *sd;
989 struct media_pad *pad;
990 int ret;
991
992 /* Start with the video capture node pad */
993 pad = media_entity_remote_source(&vid_cap->vd_pad);
994 if (pad == NULL)
995 return -EPIPE;
996 /* FIMC.{N} subdevice */
997 sd = media_entity_to_v4l2_subdev(pad->entity);
998
999 while (1) {
1000 /* Retrieve format at the sink pad */
1001 pad = &sd->entity.pads[0];
1002 if (!(pad->flags & MEDIA_PAD_FL_SINK))
1003 break;
1004 /* Don't call FIMC subdev operation to avoid nested locking */
1005 if (sd == &fimc->vid_cap.subdev) {
1006 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
1007 sink_fmt.format.width = ff->f_width;
1008 sink_fmt.format.height = ff->f_height;
1009 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1010 } else {
1011 sink_fmt.pad = pad->index;
1012 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1013 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1014 if (ret < 0 && ret != -ENOIOCTLCMD)
1015 return -EPIPE;
1016 }
1017 /* Retrieve format at the source pad */
1018 pad = media_entity_remote_source(pad);
1019 if (pad == NULL ||
1020 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1021 break;
1022
1023 sd = media_entity_to_v4l2_subdev(pad->entity);
1024 src_fmt.pad = pad->index;
1025 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1026 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1027 if (ret < 0 && ret != -ENOIOCTLCMD)
1028 return -EPIPE;
1029
1030 if (src_fmt.format.width != sink_fmt.format.width ||
1031 src_fmt.format.height != sink_fmt.format.height ||
1032 src_fmt.format.code != sink_fmt.format.code)
1033 return -EPIPE;
1034 }
1035 return 0;
1036}
1037
1038static int fimc_cap_streamon(struct file *file, void *priv,
1039 enum v4l2_buf_type type)
1040{
1041 struct fimc_dev *fimc = video_drvdata(file);
1042 struct fimc_pipeline *p = &fimc->pipeline;
1043 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
1044 int ret;
1045
1046 if (fimc_capture_active(fimc))
1047 return -EBUSY;
1048
1049 ret = media_entity_pipeline_start(&sd->entity, p->m_pipeline);
1050 if (ret < 0)
1051 return ret;
1052
1053 if (fimc->vid_cap.user_subdev_api) {
1054 ret = fimc_pipeline_validate(fimc);
1055 if (ret < 0) {
1056 media_entity_pipeline_stop(&sd->entity);
1057 return ret;
1058 }
1059 }
1060 return vb2_streamon(&fimc->vid_cap.vbq, type);
1061}
1062
1063static int fimc_cap_streamoff(struct file *file, void *priv,
1064 enum v4l2_buf_type type)
1065{
1066 struct fimc_dev *fimc = video_drvdata(file);
1067 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
1068 int ret;
1069
1070 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
1071 if (ret == 0)
1072 media_entity_pipeline_stop(&sd->entity);
1073 return ret;
1074}
1075
1076static int fimc_cap_reqbufs(struct file *file, void *priv,
1077 struct v4l2_requestbuffers *reqbufs)
1078{
1079 struct fimc_dev *fimc = video_drvdata(file);
1080 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
1081
1082 if (!ret)
1083 fimc->vid_cap.reqbufs_count = reqbufs->count;
1084 return ret;
1085}
1086
1087static int fimc_cap_querybuf(struct file *file, void *priv,
1088 struct v4l2_buffer *buf)
1089{
1090 struct fimc_dev *fimc = video_drvdata(file);
1091
1092 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
1093}
1094
1095static int fimc_cap_qbuf(struct file *file, void *priv,
1096 struct v4l2_buffer *buf)
1097{
1098 struct fimc_dev *fimc = video_drvdata(file);
1099
1100 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1101}
1102
1103static int fimc_cap_dqbuf(struct file *file, void *priv,
1104 struct v4l2_buffer *buf)
1105{
1106 struct fimc_dev *fimc = video_drvdata(file);
1107
1108 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1109}
1110
1111static int fimc_cap_create_bufs(struct file *file, void *priv,
1112 struct v4l2_create_buffers *create)
1113{
1114 struct fimc_dev *fimc = video_drvdata(file);
1115
1116 return vb2_create_bufs(&fimc->vid_cap.vbq, create);
1117}
1118
1119static int fimc_cap_prepare_buf(struct file *file, void *priv,
1120 struct v4l2_buffer *b)
1121{
1122 struct fimc_dev *fimc = video_drvdata(file);
1123
1124 return vb2_prepare_buf(&fimc->vid_cap.vbq, b);
1125}
1126
1127static int fimc_cap_g_selection(struct file *file, void *fh,
1128 struct v4l2_selection *s)
1129{
1130 struct fimc_dev *fimc = video_drvdata(file);
1131 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1132 struct fimc_frame *f = &ctx->s_frame;
1133
1134 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1135 return -EINVAL;
1136
1137 switch (s->target) {
1138 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1139 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1140 f = &ctx->d_frame;
1141 case V4L2_SEL_TGT_CROP_BOUNDS:
1142 case V4L2_SEL_TGT_CROP_DEFAULT:
1143 s->r.left = 0;
1144 s->r.top = 0;
1145 s->r.width = f->o_width;
1146 s->r.height = f->o_height;
1147 return 0;
1148
1149 case V4L2_SEL_TGT_COMPOSE_ACTIVE:
1150 f = &ctx->d_frame;
1151 case V4L2_SEL_TGT_CROP_ACTIVE:
1152 s->r.left = f->offs_h;
1153 s->r.top = f->offs_v;
1154 s->r.width = f->width;
1155 s->r.height = f->height;
1156 return 0;
1157 }
1158
1159 return -EINVAL;
1160}
1161
1162/* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1163int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1164{
1165 if (a->left < b->left || a->top < b->top)
1166 return 0;
1167 if (a->left + a->width > b->left + b->width)
1168 return 0;
1169 if (a->top + a->height > b->top + b->height)
1170 return 0;
1171
1172 return 1;
1173}
1174
1175static int fimc_cap_s_selection(struct file *file, void *fh,
1176 struct v4l2_selection *s)
1177{
1178 struct fimc_dev *fimc = video_drvdata(file);
1179 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1180 struct v4l2_rect rect = s->r;
1181 struct fimc_frame *f;
1182 unsigned long flags;
1183
1184 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1185 return -EINVAL;
1186
1187 if (s->target == V4L2_SEL_TGT_COMPOSE_ACTIVE)
1188 f = &ctx->d_frame;
1189 else if (s->target == V4L2_SEL_TGT_CROP_ACTIVE)
1190 f = &ctx->s_frame;
1191 else
1192 return -EINVAL;
1193
1194 fimc_capture_try_selection(ctx, &rect, s->target);
1195
1196 if (s->flags & V4L2_SEL_FLAG_LE &&
1197 !enclosed_rectangle(&rect, &s->r))
1198 return -ERANGE;
1199
1200 if (s->flags & V4L2_SEL_FLAG_GE &&
1201 !enclosed_rectangle(&s->r, &rect))
1202 return -ERANGE;
1203
1204 s->r = rect;
1205 spin_lock_irqsave(&fimc->slock, flags);
1206 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1207 s->r.height);
1208 spin_unlock_irqrestore(&fimc->slock, flags);
1209
1210 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1211 return 0;
1212}
1213
1214static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1215 .vidioc_querycap = fimc_vidioc_querycap_capture,
1216
1217 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1218 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1219 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1220 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1221
1222 .vidioc_reqbufs = fimc_cap_reqbufs,
1223 .vidioc_querybuf = fimc_cap_querybuf,
1224
1225 .vidioc_qbuf = fimc_cap_qbuf,
1226 .vidioc_dqbuf = fimc_cap_dqbuf,
1227
1228 .vidioc_prepare_buf = fimc_cap_prepare_buf,
1229 .vidioc_create_bufs = fimc_cap_create_bufs,
1230
1231 .vidioc_streamon = fimc_cap_streamon,
1232 .vidioc_streamoff = fimc_cap_streamoff,
1233
1234 .vidioc_g_selection = fimc_cap_g_selection,
1235 .vidioc_s_selection = fimc_cap_s_selection,
1236
1237 .vidioc_enum_input = fimc_cap_enum_input,
1238 .vidioc_s_input = fimc_cap_s_input,
1239 .vidioc_g_input = fimc_cap_g_input,
1240};
1241
1242/* Capture subdev media entity operations */
1243static int fimc_link_setup(struct media_entity *entity,
1244 const struct media_pad *local,
1245 const struct media_pad *remote, u32 flags)
1246{
1247 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1248 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1249
1250 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1251 return -EINVAL;
1252
1253 if (WARN_ON(fimc == NULL))
1254 return 0;
1255
1256 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1257 local->entity->name, remote->entity->name, flags,
1258 fimc->vid_cap.input);
1259
1260 if (flags & MEDIA_LNK_FL_ENABLED) {
1261 if (fimc->vid_cap.input != 0)
1262 return -EBUSY;
1263 fimc->vid_cap.input = sd->grp_id;
1264 return 0;
1265 }
1266
1267 fimc->vid_cap.input = 0;
1268 return 0;
1269}
1270
1271static const struct media_entity_operations fimc_sd_media_ops = {
1272 .link_setup = fimc_link_setup,
1273};
1274
1275/**
1276 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1277 * @sd: pointer to a subdev generating the notification
1278 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1279 * @arg: pointer to an u32 type integer that stores the frame payload value
1280 *
1281 * The End Of Frame notification sent by sensor subdev in its still capture
1282 * mode. If there is only a single VSYNC generated by the sensor at the
1283 * beginning of a frame transmission, FIMC does not issue the LastIrq
1284 * (end of frame) interrupt. And this notification is used to complete the
1285 * frame capture and returning a buffer to user-space. Subdev drivers should
1286 * call this notification from their last 'End of frame capture' interrupt.
1287 */
1288void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1289 void *arg)
1290{
1291 struct fimc_sensor_info *sensor;
1292 struct fimc_vid_buffer *buf;
1293 struct fimc_md *fmd;
1294 struct fimc_dev *fimc;
1295 unsigned long flags;
1296
1297 if (sd == NULL)
1298 return;
1299
1300 sensor = v4l2_get_subdev_hostdata(sd);
1301 fmd = entity_to_fimc_mdev(&sd->entity);
1302
1303 spin_lock_irqsave(&fmd->slock, flags);
1304 fimc = sensor ? sensor->host : NULL;
1305
1306 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1307 test_bit(ST_CAPT_PEND, &fimc->state)) {
1308 unsigned long irq_flags;
1309 spin_lock_irqsave(&fimc->slock, irq_flags);
1310 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1311 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1312 struct fimc_vid_buffer, list);
1313 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1314 }
1315 fimc_capture_irq_handler(fimc, 1);
1316 fimc_deactivate_capture(fimc);
1317 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1318 }
1319 spin_unlock_irqrestore(&fmd->slock, flags);
1320}
1321
1322static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1323 struct v4l2_subdev_fh *fh,
1324 struct v4l2_subdev_mbus_code_enum *code)
1325{
1326 struct fimc_fmt *fmt;
1327
1328 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1329 if (!fmt)
1330 return -EINVAL;
1331 code->code = fmt->mbus_code;
1332 return 0;
1333}
1334
1335static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1336 struct v4l2_subdev_fh *fh,
1337 struct v4l2_subdev_format *fmt)
1338{
1339 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1340 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1341 struct v4l2_mbus_framefmt *mf;
1342 struct fimc_frame *ff;
1343
1344 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1345 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1346 fmt->format = *mf;
1347 return 0;
1348 }
1349 mf = &fmt->format;
1350 mf->colorspace = V4L2_COLORSPACE_JPEG;
1351 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1352
1353 mutex_lock(&fimc->lock);
1354 /* The pixel code is same on both input and output pad */
1355 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1356 mf->code = ctx->s_frame.fmt->mbus_code;
1357 mf->width = ff->f_width;
1358 mf->height = ff->f_height;
1359 mutex_unlock(&fimc->lock);
1360
1361 return 0;
1362}
1363
1364static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1365 struct v4l2_subdev_fh *fh,
1366 struct v4l2_subdev_format *fmt)
1367{
1368 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1369 struct v4l2_mbus_framefmt *mf = &fmt->format;
1370 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1371 struct fimc_frame *ff;
1372 struct fimc_fmt *ffmt;
1373
1374 dbg("pad%d: code: 0x%x, %dx%d",
1375 fmt->pad, mf->code, mf->width, mf->height);
1376
1377 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1378 vb2_is_busy(&fimc->vid_cap.vbq))
1379 return -EBUSY;
1380
1381 mutex_lock(&fimc->lock);
1382 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1383 &mf->code, NULL, fmt->pad);
1384 mutex_unlock(&fimc->lock);
1385 mf->colorspace = V4L2_COLORSPACE_JPEG;
1386
1387 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1388 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1389 *mf = fmt->format;
1390 return 0;
1391 }
1392 /* Update RGB Alpha control state and value range */
1393 fimc_alpha_ctrl_update(ctx);
1394
1395 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color));
1396
1397 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1398 &ctx->s_frame : &ctx->d_frame;
1399
1400 mutex_lock(&fimc->lock);
1401 set_frame_bounds(ff, mf->width, mf->height);
1402 fimc->vid_cap.mf = *mf;
1403 ff->fmt = ffmt;
1404
1405 /* Reset the crop rectangle if required. */
1406 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1407 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1408
1409 if (fmt->pad == FIMC_SD_PAD_SINK)
1410 ctx->state &= ~FIMC_COMPOSE;
1411 mutex_unlock(&fimc->lock);
1412 return 0;
1413}
1414
1415static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1416 struct v4l2_subdev_fh *fh,
1417 struct v4l2_subdev_selection *sel)
1418{
1419 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1420 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1421 struct fimc_frame *f = &ctx->s_frame;
1422 struct v4l2_rect *r = &sel->r;
1423 struct v4l2_rect *try_sel;
1424
1425 if (sel->pad != FIMC_SD_PAD_SINK)
1426 return -EINVAL;
1427
1428 mutex_lock(&fimc->lock);
1429
1430 switch (sel->target) {
1431 case V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS:
1432 f = &ctx->d_frame;
1433 case V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS:
1434 r->width = f->o_width;
1435 r->height = f->o_height;
1436 r->left = 0;
1437 r->top = 0;
1438 mutex_unlock(&fimc->lock);
1439 return 0;
1440
1441 case V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL:
1442 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1443 break;
1444 case V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL:
1445 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1446 f = &ctx->d_frame;
1447 break;
1448 default:
1449 mutex_unlock(&fimc->lock);
1450 return -EINVAL;
1451 }
1452
1453 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1454 sel->r = *try_sel;
1455 } else {
1456 r->left = f->offs_h;
1457 r->top = f->offs_v;
1458 r->width = f->width;
1459 r->height = f->height;
1460 }
1461
1462 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1463 sel->pad, r->left, r->top, r->width, r->height,
1464 f->f_width, f->f_height);
1465
1466 mutex_unlock(&fimc->lock);
1467 return 0;
1468}
1469
1470static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1471 struct v4l2_subdev_fh *fh,
1472 struct v4l2_subdev_selection *sel)
1473{
1474 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1475 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1476 struct fimc_frame *f = &ctx->s_frame;
1477 struct v4l2_rect *r = &sel->r;
1478 struct v4l2_rect *try_sel;
1479 unsigned long flags;
1480
1481 if (sel->pad != FIMC_SD_PAD_SINK)
1482 return -EINVAL;
1483
1484 mutex_lock(&fimc->lock);
1485 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP_ACTIVE);
1486
1487 switch (sel->target) {
1488 case V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS:
1489 f = &ctx->d_frame;
1490 case V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS:
1491 r->width = f->o_width;
1492 r->height = f->o_height;
1493 r->left = 0;
1494 r->top = 0;
1495 mutex_unlock(&fimc->lock);
1496 return 0;
1497
1498 case V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL:
1499 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1500 break;
1501 case V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL:
1502 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1503 f = &ctx->d_frame;
1504 break;
1505 default:
1506 mutex_unlock(&fimc->lock);
1507 return -EINVAL;
1508 }
1509
1510 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1511 *try_sel = sel->r;
1512 } else {
1513 spin_lock_irqsave(&fimc->slock, flags);
1514 set_frame_crop(f, r->left, r->top, r->width, r->height);
1515 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1516 spin_unlock_irqrestore(&fimc->slock, flags);
1517 if (sel->target == V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL)
1518 ctx->state |= FIMC_COMPOSE;
1519 }
1520
1521 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1522 r->width, r->height);
1523
1524 mutex_unlock(&fimc->lock);
1525 return 0;
1526}
1527
1528static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1529 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1530 .get_selection = fimc_subdev_get_selection,
1531 .set_selection = fimc_subdev_set_selection,
1532 .get_fmt = fimc_subdev_get_fmt,
1533 .set_fmt = fimc_subdev_set_fmt,
1534};
1535
1536static struct v4l2_subdev_ops fimc_subdev_ops = {
1537 .pad = &fimc_subdev_pad_ops,
1538};
1539
1540/* Set default format at the sensor and host interface */
1541static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1542{
1543 struct v4l2_format fmt = {
1544 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1545 .fmt.pix_mp = {
1546 .width = 640,
1547 .height = 480,
1548 .pixelformat = V4L2_PIX_FMT_YUYV,
1549 .field = V4L2_FIELD_NONE,
1550 .colorspace = V4L2_COLORSPACE_JPEG,
1551 },
1552 };
1553
1554 return fimc_capture_set_format(fimc, &fmt);
1555}
1556
1557/* fimc->lock must be already initialized */
1558static int fimc_register_capture_device(struct fimc_dev *fimc,
1559 struct v4l2_device *v4l2_dev)
1560{
1561 struct video_device *vfd;
1562 struct fimc_vid_cap *vid_cap;
1563 struct fimc_ctx *ctx;
1564 struct vb2_queue *q;
1565 int ret = -ENOMEM;
1566
1567 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
1568 if (!ctx)
1569 return -ENOMEM;
1570
1571 ctx->fimc_dev = fimc;
1572 ctx->in_path = FIMC_IO_CAMERA;
1573 ctx->out_path = FIMC_IO_DMA;
1574 ctx->state = FIMC_CTX_CAP;
1575 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1576 ctx->d_frame.fmt = ctx->s_frame.fmt;
1577
1578 vfd = video_device_alloc();
1579 if (!vfd) {
1580 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
1581 goto err_vd_alloc;
1582 }
1583
1584 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1585
1586 vfd->fops = &fimc_capture_fops;
1587 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1588 vfd->v4l2_dev = v4l2_dev;
1589 vfd->minor = -1;
1590 vfd->release = video_device_release;
1591 vfd->lock = &fimc->lock;
1592 /* Locking in file operations other than ioctl should be done
1593 by the driver, not the V4L2 core.
1594 This driver needs auditing so that this flag can be removed. */
1595 set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
1596 video_set_drvdata(vfd, fimc);
1597
1598 vid_cap = &fimc->vid_cap;
1599 vid_cap->vfd = vfd;
1600 vid_cap->active_buf_cnt = 0;
1601 vid_cap->reqbufs_count = 0;
1602 vid_cap->refcnt = 0;
1603
1604 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1605 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1606 vid_cap->ctx = ctx;
1607
1608 q = &fimc->vid_cap.vbq;
1609 memset(q, 0, sizeof(*q));
1610 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1611 q->io_modes = VB2_MMAP | VB2_USERPTR;
1612 q->drv_priv = fimc->vid_cap.ctx;
1613 q->ops = &fimc_capture_qops;
1614 q->mem_ops = &vb2_dma_contig_memops;
1615 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1616
1617 vb2_queue_init(q);
1618
1619 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1620 ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
1621 if (ret)
1622 goto err_ent;
1623
1624 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1625 if (ret)
1626 goto err_vd;
1627
1628 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1629 vfd->name, video_device_node_name(vfd));
1630
1631 vfd->ctrl_handler = &ctx->ctrls.handler;
1632 return 0;
1633
1634err_vd:
1635 media_entity_cleanup(&vfd->entity);
1636err_ent:
1637 video_device_release(vfd);
1638err_vd_alloc:
1639 kfree(ctx);
1640 return ret;
1641}
1642
1643static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1644{
1645 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1646 int ret;
1647
1648 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1649 if (ret)
1650 return ret;
1651
1652 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1653 if (ret)
1654 fimc_unregister_m2m_device(fimc);
1655
1656 return ret;
1657}
1658
1659static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1660{
1661 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1662
1663 if (fimc == NULL)
1664 return;
1665
1666 fimc_unregister_m2m_device(fimc);
1667
1668 if (fimc->vid_cap.vfd) {
1669 media_entity_cleanup(&fimc->vid_cap.vfd->entity);
1670 video_unregister_device(fimc->vid_cap.vfd);
1671 fimc->vid_cap.vfd = NULL;
1672 }
1673
1674 kfree(fimc->vid_cap.ctx);
1675 fimc->vid_cap.ctx = NULL;
1676}
1677
1678static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1679 .registered = fimc_capture_subdev_registered,
1680 .unregistered = fimc_capture_subdev_unregistered,
1681};
1682
1683int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1684{
1685 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1686 int ret;
1687
1688 v4l2_subdev_init(sd, &fimc_subdev_ops);
1689 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1690 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1691
1692 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1693 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1694 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1695 fimc->vid_cap.sd_pads, 0);
1696 if (ret)
1697 return ret;
1698
1699 sd->entity.ops = &fimc_sd_media_ops;
1700 sd->internal_ops = &fimc_capture_sd_internal_ops;
1701 v4l2_set_subdevdata(sd, fimc);
1702 return 0;
1703}
1704
1705void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1706{
1707 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1708
1709 v4l2_device_unregister_subdev(sd);
1710 media_entity_cleanup(&sd->entity);
1711 v4l2_set_subdevdata(sd, NULL);
1712}