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[deliverable/linux.git] / drivers / media / video / s5p-fimc / fimc-capture.c
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
34 static 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 */
84 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
85 {
86 struct fimc_vid_cap *cap = &fimc->vid_cap;
87 struct fimc_vid_buffer *buf;
88 unsigned long flags;
89 bool streaming;
90
91 spin_lock_irqsave(&fimc->slock, flags);
92 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
93
94 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
95 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
96 if (suspend)
97 fimc->state |= (1 << ST_CAPT_SUSPENDED);
98 else
99 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
100
101 /* Release unused buffers */
102 while (!suspend && !list_empty(&cap->pending_buf_q)) {
103 buf = fimc_pending_queue_pop(cap);
104 vb2_buffer_done(&buf->vb, VB2_BUF_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
126 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
127 {
128 unsigned long flags;
129
130 if (!fimc_capture_active(fimc))
131 return 0;
132
133 spin_lock_irqsave(&fimc->slock, flags);
134 set_bit(ST_CAPT_SHUT, &fimc->state);
135 fimc_deactivate_capture(fimc);
136 spin_unlock_irqrestore(&fimc->slock, flags);
137
138 wait_event_timeout(fimc->irq_queue,
139 !test_bit(ST_CAPT_SHUT, &fimc->state),
140 (2*HZ/10)); /* 200 ms */
141
142 return fimc_capture_state_cleanup(fimc, suspend);
143 }
144
145 /**
146 * fimc_capture_config_update - apply the camera interface configuration
147 *
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 */
152 static 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
177 void 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);
231 done:
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
242 static 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
273 static 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
284 int 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
294 static void buffer_queue(struct vb2_buffer *vb);
295
296 int 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
323 static 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] = size;
354 allocators[i] = ctx->fimc_dev->alloc_ctx;
355 }
356
357 return 0;
358 }
359
360 static int buffer_prepare(struct vb2_buffer *vb)
361 {
362 struct vb2_queue *vq = vb->vb2_queue;
363 struct fimc_ctx *ctx = vq->drv_priv;
364 int i;
365
366 if (ctx->d_frame.fmt == NULL)
367 return -EINVAL;
368
369 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
370 unsigned long size = ctx->d_frame.payload[i];
371
372 if (vb2_plane_size(vb, i) < size) {
373 v4l2_err(ctx->fimc_dev->vid_cap.vfd,
374 "User buffer too small (%ld < %ld)\n",
375 vb2_plane_size(vb, i), size);
376 return -EINVAL;
377 }
378 vb2_set_plane_payload(vb, i, size);
379 }
380
381 return 0;
382 }
383
384 static void buffer_queue(struct vb2_buffer *vb)
385 {
386 struct fimc_vid_buffer *buf
387 = container_of(vb, struct fimc_vid_buffer, vb);
388 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
389 struct fimc_dev *fimc = ctx->fimc_dev;
390 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
391 unsigned long flags;
392 int min_bufs;
393
394 spin_lock_irqsave(&fimc->slock, flags);
395 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
396
397 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
398 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
399 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
400 /* Setup the buffer directly for processing. */
401 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
402 vid_cap->buf_index;
403
404 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
405 buf->index = vid_cap->buf_index;
406 fimc_active_queue_add(vid_cap, buf);
407
408 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
409 vid_cap->buf_index = 0;
410 } else {
411 fimc_pending_queue_add(vid_cap, buf);
412 }
413
414 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
415
416
417 if (vb2_is_streaming(&vid_cap->vbq) &&
418 vid_cap->active_buf_cnt >= min_bufs &&
419 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
420 fimc_activate_capture(ctx);
421 spin_unlock_irqrestore(&fimc->slock, flags);
422
423 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
424 fimc_pipeline_s_stream(&fimc->pipeline, 1);
425 return;
426 }
427 spin_unlock_irqrestore(&fimc->slock, flags);
428 }
429
430 static void fimc_lock(struct vb2_queue *vq)
431 {
432 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
433 mutex_lock(&ctx->fimc_dev->lock);
434 }
435
436 static void fimc_unlock(struct vb2_queue *vq)
437 {
438 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
439 mutex_unlock(&ctx->fimc_dev->lock);
440 }
441
442 static struct vb2_ops fimc_capture_qops = {
443 .queue_setup = queue_setup,
444 .buf_prepare = buffer_prepare,
445 .buf_queue = buffer_queue,
446 .wait_prepare = fimc_unlock,
447 .wait_finish = fimc_lock,
448 .start_streaming = start_streaming,
449 .stop_streaming = stop_streaming,
450 };
451
452 /**
453 * fimc_capture_ctrls_create - initialize the control handler
454 * Initialize the capture video node control handler and fill it
455 * with the FIMC controls. Inherit any sensor's controls if the
456 * 'user_subdev_api' flag is false (default behaviour).
457 * This function need to be called with the graph mutex held.
458 */
459 int fimc_capture_ctrls_create(struct fimc_dev *fimc)
460 {
461 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
462 int ret;
463
464 if (WARN_ON(vid_cap->ctx == NULL))
465 return -ENXIO;
466 if (vid_cap->ctx->ctrls.ready)
467 return 0;
468
469 ret = fimc_ctrls_create(vid_cap->ctx);
470 if (ret || vid_cap->user_subdev_api || !vid_cap->ctx->ctrls.ready)
471 return ret;
472
473 return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrls.handler,
474 fimc->pipeline.subdevs[IDX_SENSOR]->ctrl_handler);
475 }
476
477 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
478
479 static int fimc_capture_open(struct file *file)
480 {
481 struct fimc_dev *fimc = video_drvdata(file);
482 int ret = v4l2_fh_open(file);
483
484 if (ret)
485 return ret;
486
487 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
488
489 /* Return if the corresponding video mem2mem node is already opened. */
490 if (fimc_m2m_active(fimc))
491 return -EBUSY;
492
493 set_bit(ST_CAPT_BUSY, &fimc->state);
494 pm_runtime_get_sync(&fimc->pdev->dev);
495
496 if (++fimc->vid_cap.refcnt == 1) {
497 ret = fimc_pipeline_initialize(&fimc->pipeline,
498 &fimc->vid_cap.vfd->entity, true);
499 if (ret < 0) {
500 dev_err(&fimc->pdev->dev,
501 "Video pipeline initialization failed\n");
502 pm_runtime_put_sync(&fimc->pdev->dev);
503 fimc->vid_cap.refcnt--;
504 v4l2_fh_release(file);
505 clear_bit(ST_CAPT_BUSY, &fimc->state);
506 return ret;
507 }
508 ret = fimc_capture_ctrls_create(fimc);
509
510 if (!ret && !fimc->vid_cap.user_subdev_api)
511 ret = fimc_capture_set_default_format(fimc);
512 }
513 return ret;
514 }
515
516 static int fimc_capture_close(struct file *file)
517 {
518 struct fimc_dev *fimc = video_drvdata(file);
519
520 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
521
522 if (--fimc->vid_cap.refcnt == 0) {
523 clear_bit(ST_CAPT_BUSY, &fimc->state);
524 fimc_stop_capture(fimc, false);
525 fimc_pipeline_shutdown(&fimc->pipeline);
526 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
527 }
528
529 pm_runtime_put(&fimc->pdev->dev);
530
531 if (fimc->vid_cap.refcnt == 0) {
532 vb2_queue_release(&fimc->vid_cap.vbq);
533 fimc_ctrls_delete(fimc->vid_cap.ctx);
534 }
535 return v4l2_fh_release(file);
536 }
537
538 static unsigned int fimc_capture_poll(struct file *file,
539 struct poll_table_struct *wait)
540 {
541 struct fimc_dev *fimc = video_drvdata(file);
542
543 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
544 }
545
546 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
547 {
548 struct fimc_dev *fimc = video_drvdata(file);
549
550 return vb2_mmap(&fimc->vid_cap.vbq, vma);
551 }
552
553 static const struct v4l2_file_operations fimc_capture_fops = {
554 .owner = THIS_MODULE,
555 .open = fimc_capture_open,
556 .release = fimc_capture_close,
557 .poll = fimc_capture_poll,
558 .unlocked_ioctl = video_ioctl2,
559 .mmap = fimc_capture_mmap,
560 };
561
562 /*
563 * Format and crop negotiation helpers
564 */
565
566 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
567 u32 *width, u32 *height,
568 u32 *code, u32 *fourcc, int pad)
569 {
570 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
571 struct fimc_dev *fimc = ctx->fimc_dev;
572 struct fimc_variant *var = fimc->variant;
573 struct fimc_pix_limit *pl = var->pix_limit;
574 struct fimc_frame *dst = &ctx->d_frame;
575 u32 depth, min_w, max_w, min_h, align_h = 3;
576 u32 mask = FMT_FLAGS_CAM;
577 struct fimc_fmt *ffmt;
578
579 /* Color conversion from/to JPEG is not supported */
580 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
581 fimc_fmt_is_jpeg(ctx->s_frame.fmt->color))
582 *code = V4L2_MBUS_FMT_JPEG_1X8;
583
584 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
585 mask |= FMT_FLAGS_M2M;
586
587 ffmt = fimc_find_format(fourcc, code, mask, 0);
588 if (WARN_ON(!ffmt))
589 return NULL;
590 if (code)
591 *code = ffmt->mbus_code;
592 if (fourcc)
593 *fourcc = ffmt->fourcc;
594
595 if (pad == FIMC_SD_PAD_SINK) {
596 max_w = fimc_fmt_is_jpeg(ffmt->color) ?
597 pl->scaler_dis_w : pl->scaler_en_w;
598 /* Apply the camera input interface pixel constraints */
599 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
600 height, max_t(u32, *height, 32),
601 FIMC_CAMIF_MAX_HEIGHT,
602 fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1,
603 0);
604 return ffmt;
605 }
606 /* Can't scale or crop in transparent (JPEG) transfer mode */
607 if (fimc_fmt_is_jpeg(ffmt->color)) {
608 *width = ctx->s_frame.f_width;
609 *height = ctx->s_frame.f_height;
610 return ffmt;
611 }
612 /* Apply the scaler and the output DMA constraints */
613 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
614 if (ctx->state & FIMC_COMPOSE) {
615 min_w = dst->offs_h + dst->width;
616 min_h = dst->offs_v + dst->height;
617 } else {
618 min_w = var->min_out_pixsize;
619 min_h = var->min_out_pixsize;
620 }
621 if (var->min_vsize_align == 1 && !rotation)
622 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
623
624 depth = fimc_get_format_depth(ffmt);
625 v4l_bound_align_image(width, min_w, max_w,
626 ffs(var->min_out_pixsize) - 1,
627 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
628 align_h,
629 64/(ALIGN(depth, 8)));
630
631 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
632 pad, code ? *code : 0, *width, *height,
633 dst->f_width, dst->f_height);
634
635 return ffmt;
636 }
637
638 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
639 struct v4l2_rect *r,
640 int target)
641 {
642 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
643 struct fimc_dev *fimc = ctx->fimc_dev;
644 struct fimc_variant *var = fimc->variant;
645 struct fimc_pix_limit *pl = var->pix_limit;
646 struct fimc_frame *sink = &ctx->s_frame;
647 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
648 u32 align_sz = 0, align_h = 4;
649 u32 max_sc_h, max_sc_v;
650
651 /* In JPEG transparent transfer mode cropping is not supported */
652 if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) {
653 r->width = sink->f_width;
654 r->height = sink->f_height;
655 r->left = r->top = 0;
656 return;
657 }
658 if (target == V4L2_SEL_TGT_COMPOSE) {
659 if (ctx->rotation != 90 && ctx->rotation != 270)
660 align_h = 1;
661 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
662 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
663 min_sz = var->min_out_pixsize;
664 } else {
665 u32 depth = fimc_get_format_depth(sink->fmt);
666 align_sz = 64/ALIGN(depth, 8);
667 min_sz = var->min_inp_pixsize;
668 min_w = min_h = min_sz;
669 max_sc_h = max_sc_v = 1;
670 }
671 /*
672 * For the compose rectangle the following constraints must be met:
673 * - it must fit in the sink pad format rectangle (f_width/f_height);
674 * - maximum downscaling ratio is 64;
675 * - maximum crop size depends if the rotator is used or not;
676 * - the sink pad format width/height must be 4 multiple of the
677 * prescaler ratios determined by sink pad size and source pad crop,
678 * the prescaler ratio is returned by fimc_get_scaler_factor().
679 */
680 max_w = min_t(u32,
681 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
682 rotate ? sink->f_height : sink->f_width);
683 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
684
685 if (target == V4L2_SEL_TGT_COMPOSE) {
686 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
687 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
688 if (rotate) {
689 swap(max_sc_h, max_sc_v);
690 swap(min_w, min_h);
691 }
692 }
693 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
694 &r->height, min_h, max_h, align_h,
695 align_sz);
696 /* Adjust left/top if crop/compose rectangle is out of bounds */
697 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
698 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
699 r->left = round_down(r->left, var->hor_offs_align);
700
701 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
702 target, r->left, r->top, r->width, r->height,
703 sink->f_width, sink->f_height);
704 }
705
706 /*
707 * The video node ioctl operations
708 */
709 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
710 struct v4l2_capability *cap)
711 {
712 struct fimc_dev *fimc = video_drvdata(file);
713
714 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
715 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
716 cap->bus_info[0] = 0;
717 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
718
719 return 0;
720 }
721
722 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
723 struct v4l2_fmtdesc *f)
724 {
725 struct fimc_fmt *fmt;
726
727 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
728 f->index);
729 if (!fmt)
730 return -EINVAL;
731 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
732 f->pixelformat = fmt->fourcc;
733 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
734 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
735 return 0;
736 }
737
738 /**
739 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
740 * elements
741 * @ctx: FIMC capture context
742 * @tfmt: media bus format to try/set on subdevs
743 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
744 * @set: true to set format on subdevs, false to try only
745 */
746 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
747 struct v4l2_mbus_framefmt *tfmt,
748 struct fimc_fmt **fmt_id,
749 bool set)
750 {
751 struct fimc_dev *fimc = ctx->fimc_dev;
752 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
753 struct v4l2_subdev *csis = fimc->pipeline.subdevs[IDX_CSIS];
754 struct v4l2_subdev_format sfmt;
755 struct v4l2_mbus_framefmt *mf = &sfmt.format;
756 struct fimc_fmt *ffmt = NULL;
757 int ret, i = 0;
758
759 if (WARN_ON(!sd || !tfmt))
760 return -EINVAL;
761
762 memset(&sfmt, 0, sizeof(sfmt));
763 sfmt.format = *tfmt;
764
765 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
766 while (1) {
767 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
768 FMT_FLAGS_CAM, i++);
769 if (ffmt == NULL) {
770 /*
771 * Notify user-space if common pixel code for
772 * host and sensor does not exist.
773 */
774 return -EINVAL;
775 }
776 mf->code = tfmt->code = ffmt->mbus_code;
777
778 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
779 if (ret)
780 return ret;
781 if (mf->code != tfmt->code) {
782 mf->code = 0;
783 continue;
784 }
785 if (mf->width != tfmt->width || mf->height != tfmt->height) {
786 u32 fcc = ffmt->fourcc;
787 tfmt->width = mf->width;
788 tfmt->height = mf->height;
789 ffmt = fimc_capture_try_format(ctx,
790 &tfmt->width, &tfmt->height,
791 NULL, &fcc, FIMC_SD_PAD_SOURCE);
792 if (ffmt && ffmt->mbus_code)
793 mf->code = ffmt->mbus_code;
794 if (mf->width != tfmt->width ||
795 mf->height != tfmt->height)
796 continue;
797 tfmt->code = mf->code;
798 }
799 if (csis)
800 ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
801
802 if (mf->code == tfmt->code &&
803 mf->width == tfmt->width && mf->height == tfmt->height)
804 break;
805 }
806
807 if (fmt_id && ffmt)
808 *fmt_id = ffmt;
809 *tfmt = *mf;
810
811 dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt);
812 return 0;
813 }
814
815 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
816 struct v4l2_format *f)
817 {
818 struct fimc_dev *fimc = video_drvdata(file);
819 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
820
821 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
822 return -EINVAL;
823
824 return fimc_fill_format(&ctx->d_frame, f);
825 }
826
827 static 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 (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
837 return -EINVAL;
838
839 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
840 fimc_capture_try_format(ctx, &pix->width, &pix->height,
841 NULL, &pix->pixelformat,
842 FIMC_SD_PAD_SINK);
843 ctx->s_frame.f_width = pix->width;
844 ctx->s_frame.f_height = pix->height;
845 }
846 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
847 NULL, &pix->pixelformat,
848 FIMC_SD_PAD_SOURCE);
849 if (!ffmt)
850 return -EINVAL;
851
852 if (!fimc->vid_cap.user_subdev_api) {
853 mf.width = pix->width;
854 mf.height = pix->height;
855 mf.code = ffmt->mbus_code;
856 fimc_md_graph_lock(fimc);
857 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
858 fimc_md_graph_unlock(fimc);
859
860 pix->width = mf.width;
861 pix->height = mf.height;
862 if (ffmt)
863 pix->pixelformat = ffmt->fourcc;
864 }
865
866 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
867 return 0;
868 }
869
870 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg)
871 {
872 ctx->scaler.enabled = !jpeg;
873 fimc_ctrls_activate(ctx, !jpeg);
874
875 if (jpeg)
876 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
877 else
878 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
879 }
880
881 static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f)
882 {
883 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
884 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
885 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
886 struct fimc_frame *ff = &ctx->d_frame;
887 struct fimc_fmt *s_fmt = NULL;
888 int ret, i;
889
890 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
891 return -EINVAL;
892 if (vb2_is_busy(&fimc->vid_cap.vbq))
893 return -EBUSY;
894
895 /* Pre-configure format at camera interface input, for JPEG only */
896 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
897 fimc_capture_try_format(ctx, &pix->width, &pix->height,
898 NULL, &pix->pixelformat,
899 FIMC_SD_PAD_SINK);
900 ctx->s_frame.f_width = pix->width;
901 ctx->s_frame.f_height = pix->height;
902 }
903 /* Try the format at the scaler and the DMA output */
904 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
905 NULL, &pix->pixelformat,
906 FIMC_SD_PAD_SOURCE);
907 if (!ff->fmt)
908 return -EINVAL;
909
910 /* Update RGB Alpha control state and value range */
911 fimc_alpha_ctrl_update(ctx);
912
913 /* Try to match format at the host and the sensor */
914 if (!fimc->vid_cap.user_subdev_api) {
915 mf->code = ff->fmt->mbus_code;
916 mf->width = pix->width;
917 mf->height = pix->height;
918
919 fimc_md_graph_lock(fimc);
920 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
921 fimc_md_graph_unlock(fimc);
922 if (ret)
923 return ret;
924 pix->width = mf->width;
925 pix->height = mf->height;
926 }
927 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
928 for (i = 0; i < ff->fmt->colplanes; i++)
929 ff->payload[i] =
930 (pix->width * pix->height * ff->fmt->depth[i]) / 8;
931
932 set_frame_bounds(ff, pix->width, pix->height);
933 /* Reset the composition rectangle if not yet configured */
934 if (!(ctx->state & FIMC_COMPOSE))
935 set_frame_crop(ff, 0, 0, pix->width, pix->height);
936
937 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color));
938
939 /* Reset cropping and set format at the camera interface input */
940 if (!fimc->vid_cap.user_subdev_api) {
941 ctx->s_frame.fmt = s_fmt;
942 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
943 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
944 }
945
946 return ret;
947 }
948
949 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
950 struct v4l2_format *f)
951 {
952 struct fimc_dev *fimc = video_drvdata(file);
953
954 return fimc_capture_set_format(fimc, f);
955 }
956
957 static int fimc_cap_enum_input(struct file *file, void *priv,
958 struct v4l2_input *i)
959 {
960 struct fimc_dev *fimc = video_drvdata(file);
961 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
962
963 if (i->index != 0)
964 return -EINVAL;
965
966 i->type = V4L2_INPUT_TYPE_CAMERA;
967 if (sd)
968 strlcpy(i->name, sd->name, sizeof(i->name));
969 return 0;
970 }
971
972 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
973 {
974 return i == 0 ? i : -EINVAL;
975 }
976
977 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
978 {
979 *i = 0;
980 return 0;
981 }
982
983 /**
984 * fimc_pipeline_validate - check for formats inconsistencies
985 * between source and sink pad of each link
986 *
987 * Return 0 if all formats match or -EPIPE otherwise.
988 */
989 static int fimc_pipeline_validate(struct fimc_dev *fimc)
990 {
991 struct v4l2_subdev_format sink_fmt, src_fmt;
992 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
993 struct v4l2_subdev *sd;
994 struct media_pad *pad;
995 int ret;
996
997 /* Start with the video capture node pad */
998 pad = media_entity_remote_source(&vid_cap->vd_pad);
999 if (pad == NULL)
1000 return -EPIPE;
1001 /* FIMC.{N} subdevice */
1002 sd = media_entity_to_v4l2_subdev(pad->entity);
1003
1004 while (1) {
1005 /* Retrieve format at the sink pad */
1006 pad = &sd->entity.pads[0];
1007 if (!(pad->flags & MEDIA_PAD_FL_SINK))
1008 break;
1009 /* Don't call FIMC subdev operation to avoid nested locking */
1010 if (sd == &fimc->vid_cap.subdev) {
1011 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
1012 sink_fmt.format.width = ff->f_width;
1013 sink_fmt.format.height = ff->f_height;
1014 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1015 } else {
1016 sink_fmt.pad = pad->index;
1017 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1018 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1019 if (ret < 0 && ret != -ENOIOCTLCMD)
1020 return -EPIPE;
1021 }
1022 /* Retrieve format at the source pad */
1023 pad = media_entity_remote_source(pad);
1024 if (pad == NULL ||
1025 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1026 break;
1027
1028 sd = media_entity_to_v4l2_subdev(pad->entity);
1029 src_fmt.pad = pad->index;
1030 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1031 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1032 if (ret < 0 && ret != -ENOIOCTLCMD)
1033 return -EPIPE;
1034
1035 if (src_fmt.format.width != sink_fmt.format.width ||
1036 src_fmt.format.height != sink_fmt.format.height ||
1037 src_fmt.format.code != sink_fmt.format.code)
1038 return -EPIPE;
1039 }
1040 return 0;
1041 }
1042
1043 static int fimc_cap_streamon(struct file *file, void *priv,
1044 enum v4l2_buf_type type)
1045 {
1046 struct fimc_dev *fimc = video_drvdata(file);
1047 struct fimc_pipeline *p = &fimc->pipeline;
1048 int ret;
1049
1050 if (fimc_capture_active(fimc))
1051 return -EBUSY;
1052
1053 media_entity_pipeline_start(&p->subdevs[IDX_SENSOR]->entity,
1054 p->m_pipeline);
1055
1056 if (fimc->vid_cap.user_subdev_api) {
1057 ret = fimc_pipeline_validate(fimc);
1058 if (ret)
1059 return ret;
1060 }
1061 return vb2_streamon(&fimc->vid_cap.vbq, type);
1062 }
1063
1064 static int fimc_cap_streamoff(struct file *file, void *priv,
1065 enum v4l2_buf_type type)
1066 {
1067 struct fimc_dev *fimc = video_drvdata(file);
1068 struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR];
1069 int ret;
1070
1071 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
1072 if (ret == 0)
1073 media_entity_pipeline_stop(&sd->entity);
1074 return ret;
1075 }
1076
1077 static int fimc_cap_reqbufs(struct file *file, void *priv,
1078 struct v4l2_requestbuffers *reqbufs)
1079 {
1080 struct fimc_dev *fimc = video_drvdata(file);
1081 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
1082
1083 if (!ret)
1084 fimc->vid_cap.reqbufs_count = reqbufs->count;
1085 return ret;
1086 }
1087
1088 static int fimc_cap_querybuf(struct file *file, void *priv,
1089 struct v4l2_buffer *buf)
1090 {
1091 struct fimc_dev *fimc = video_drvdata(file);
1092
1093 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
1094 }
1095
1096 static int fimc_cap_qbuf(struct file *file, void *priv,
1097 struct v4l2_buffer *buf)
1098 {
1099 struct fimc_dev *fimc = video_drvdata(file);
1100
1101 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1102 }
1103
1104 static int fimc_cap_dqbuf(struct file *file, void *priv,
1105 struct v4l2_buffer *buf)
1106 {
1107 struct fimc_dev *fimc = video_drvdata(file);
1108
1109 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1110 }
1111
1112 static int fimc_cap_create_bufs(struct file *file, void *priv,
1113 struct v4l2_create_buffers *create)
1114 {
1115 struct fimc_dev *fimc = video_drvdata(file);
1116
1117 return vb2_create_bufs(&fimc->vid_cap.vbq, create);
1118 }
1119
1120 static int fimc_cap_prepare_buf(struct file *file, void *priv,
1121 struct v4l2_buffer *b)
1122 {
1123 struct fimc_dev *fimc = video_drvdata(file);
1124
1125 return vb2_prepare_buf(&fimc->vid_cap.vbq, b);
1126 }
1127
1128 static int fimc_cap_g_selection(struct file *file, void *fh,
1129 struct v4l2_selection *s)
1130 {
1131 struct fimc_dev *fimc = video_drvdata(file);
1132 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1133 struct fimc_frame *f = &ctx->s_frame;
1134
1135 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1136 return -EINVAL;
1137
1138 switch (s->target) {
1139 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1140 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1141 f = &ctx->d_frame;
1142 case V4L2_SEL_TGT_CROP_BOUNDS:
1143 case V4L2_SEL_TGT_CROP_DEFAULT:
1144 s->r.left = 0;
1145 s->r.top = 0;
1146 s->r.width = f->o_width;
1147 s->r.height = f->o_height;
1148 return 0;
1149
1150 case V4L2_SEL_TGT_COMPOSE:
1151 f = &ctx->d_frame;
1152 case V4L2_SEL_TGT_CROP:
1153 s->r.left = f->offs_h;
1154 s->r.top = f->offs_v;
1155 s->r.width = f->width;
1156 s->r.height = f->height;
1157 return 0;
1158 }
1159
1160 return -EINVAL;
1161 }
1162
1163 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1164 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1165 {
1166 if (a->left < b->left || a->top < b->top)
1167 return 0;
1168 if (a->left + a->width > b->left + b->width)
1169 return 0;
1170 if (a->top + a->height > b->top + b->height)
1171 return 0;
1172
1173 return 1;
1174 }
1175
1176 static int fimc_cap_s_selection(struct file *file, void *fh,
1177 struct v4l2_selection *s)
1178 {
1179 struct fimc_dev *fimc = video_drvdata(file);
1180 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1181 struct v4l2_rect rect = s->r;
1182 struct fimc_frame *f;
1183 unsigned long flags;
1184
1185 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1186 return -EINVAL;
1187
1188 if (s->target == V4L2_SEL_TGT_COMPOSE)
1189 f = &ctx->d_frame;
1190 else if (s->target == V4L2_SEL_TGT_CROP)
1191 f = &ctx->s_frame;
1192 else
1193 return -EINVAL;
1194
1195 fimc_capture_try_selection(ctx, &rect, s->target);
1196
1197 if (s->flags & V4L2_SEL_FLAG_LE &&
1198 !enclosed_rectangle(&rect, &s->r))
1199 return -ERANGE;
1200
1201 if (s->flags & V4L2_SEL_FLAG_GE &&
1202 !enclosed_rectangle(&s->r, &rect))
1203 return -ERANGE;
1204
1205 s->r = rect;
1206 spin_lock_irqsave(&fimc->slock, flags);
1207 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1208 s->r.height);
1209 spin_unlock_irqrestore(&fimc->slock, flags);
1210
1211 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1212 return 0;
1213 }
1214
1215 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1216 .vidioc_querycap = fimc_vidioc_querycap_capture,
1217
1218 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1219 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1220 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1221 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1222
1223 .vidioc_reqbufs = fimc_cap_reqbufs,
1224 .vidioc_querybuf = fimc_cap_querybuf,
1225
1226 .vidioc_qbuf = fimc_cap_qbuf,
1227 .vidioc_dqbuf = fimc_cap_dqbuf,
1228
1229 .vidioc_prepare_buf = fimc_cap_prepare_buf,
1230 .vidioc_create_bufs = fimc_cap_create_bufs,
1231
1232 .vidioc_streamon = fimc_cap_streamon,
1233 .vidioc_streamoff = fimc_cap_streamoff,
1234
1235 .vidioc_g_selection = fimc_cap_g_selection,
1236 .vidioc_s_selection = fimc_cap_s_selection,
1237
1238 .vidioc_enum_input = fimc_cap_enum_input,
1239 .vidioc_s_input = fimc_cap_s_input,
1240 .vidioc_g_input = fimc_cap_g_input,
1241 };
1242
1243 /* Capture subdev media entity operations */
1244 static int fimc_link_setup(struct media_entity *entity,
1245 const struct media_pad *local,
1246 const struct media_pad *remote, u32 flags)
1247 {
1248 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1249 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1250
1251 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1252 return -EINVAL;
1253
1254 if (WARN_ON(fimc == NULL))
1255 return 0;
1256
1257 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1258 local->entity->name, remote->entity->name, flags,
1259 fimc->vid_cap.input);
1260
1261 if (flags & MEDIA_LNK_FL_ENABLED) {
1262 if (fimc->vid_cap.input != 0)
1263 return -EBUSY;
1264 fimc->vid_cap.input = sd->grp_id;
1265 return 0;
1266 }
1267
1268 fimc->vid_cap.input = 0;
1269 return 0;
1270 }
1271
1272 static const struct media_entity_operations fimc_sd_media_ops = {
1273 .link_setup = fimc_link_setup,
1274 };
1275
1276 /**
1277 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1278 * @sd: pointer to a subdev generating the notification
1279 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1280 * @arg: pointer to an u32 type integer that stores the frame payload value
1281 *
1282 * The End Of Frame notification sent by sensor subdev in its still capture
1283 * mode. If there is only a single VSYNC generated by the sensor at the
1284 * beginning of a frame transmission, FIMC does not issue the LastIrq
1285 * (end of frame) interrupt. And this notification is used to complete the
1286 * frame capture and returning a buffer to user-space. Subdev drivers should
1287 * call this notification from their last 'End of frame capture' interrupt.
1288 */
1289 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1290 void *arg)
1291 {
1292 struct fimc_sensor_info *sensor;
1293 struct fimc_vid_buffer *buf;
1294 struct fimc_md *fmd;
1295 struct fimc_dev *fimc;
1296 unsigned long flags;
1297
1298 if (sd == NULL)
1299 return;
1300
1301 sensor = v4l2_get_subdev_hostdata(sd);
1302 fmd = entity_to_fimc_mdev(&sd->entity);
1303
1304 spin_lock_irqsave(&fmd->slock, flags);
1305 fimc = sensor ? sensor->host : NULL;
1306
1307 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1308 test_bit(ST_CAPT_PEND, &fimc->state)) {
1309 unsigned long irq_flags;
1310 spin_lock_irqsave(&fimc->slock, irq_flags);
1311 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1312 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1313 struct fimc_vid_buffer, list);
1314 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1315 }
1316 fimc_capture_irq_handler(fimc, 1);
1317 fimc_deactivate_capture(fimc);
1318 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1319 }
1320 spin_unlock_irqrestore(&fmd->slock, flags);
1321 }
1322
1323 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1324 struct v4l2_subdev_fh *fh,
1325 struct v4l2_subdev_mbus_code_enum *code)
1326 {
1327 struct fimc_fmt *fmt;
1328
1329 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1330 if (!fmt)
1331 return -EINVAL;
1332 code->code = fmt->mbus_code;
1333 return 0;
1334 }
1335
1336 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1337 struct v4l2_subdev_fh *fh,
1338 struct v4l2_subdev_format *fmt)
1339 {
1340 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1341 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1342 struct v4l2_mbus_framefmt *mf;
1343 struct fimc_frame *ff;
1344
1345 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1346 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1347 fmt->format = *mf;
1348 return 0;
1349 }
1350 mf = &fmt->format;
1351 mf->colorspace = V4L2_COLORSPACE_JPEG;
1352 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1353
1354 mutex_lock(&fimc->lock);
1355 /* The pixel code is same on both input and output pad */
1356 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1357 mf->code = ctx->s_frame.fmt->mbus_code;
1358 mf->width = ff->f_width;
1359 mf->height = ff->f_height;
1360 mutex_unlock(&fimc->lock);
1361
1362 return 0;
1363 }
1364
1365 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1366 struct v4l2_subdev_fh *fh,
1367 struct v4l2_subdev_format *fmt)
1368 {
1369 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1370 struct v4l2_mbus_framefmt *mf = &fmt->format;
1371 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1372 struct fimc_frame *ff;
1373 struct fimc_fmt *ffmt;
1374
1375 dbg("pad%d: code: 0x%x, %dx%d",
1376 fmt->pad, mf->code, mf->width, mf->height);
1377
1378 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1379 vb2_is_busy(&fimc->vid_cap.vbq))
1380 return -EBUSY;
1381
1382 mutex_lock(&fimc->lock);
1383 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1384 &mf->code, NULL, fmt->pad);
1385 mutex_unlock(&fimc->lock);
1386 mf->colorspace = V4L2_COLORSPACE_JPEG;
1387
1388 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1389 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1390 *mf = fmt->format;
1391 return 0;
1392 }
1393 /* Update RGB Alpha control state and value range */
1394 fimc_alpha_ctrl_update(ctx);
1395
1396 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color));
1397
1398 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1399 &ctx->s_frame : &ctx->d_frame;
1400
1401 mutex_lock(&fimc->lock);
1402 set_frame_bounds(ff, mf->width, mf->height);
1403 fimc->vid_cap.mf = *mf;
1404 ff->fmt = ffmt;
1405
1406 /* Reset the crop rectangle if required. */
1407 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1408 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1409
1410 if (fmt->pad == FIMC_SD_PAD_SINK)
1411 ctx->state &= ~FIMC_COMPOSE;
1412 mutex_unlock(&fimc->lock);
1413 return 0;
1414 }
1415
1416 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1417 struct v4l2_subdev_fh *fh,
1418 struct v4l2_subdev_selection *sel)
1419 {
1420 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1421 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1422 struct fimc_frame *f = &ctx->s_frame;
1423 struct v4l2_rect *r = &sel->r;
1424 struct v4l2_rect *try_sel;
1425
1426 if (sel->pad != FIMC_SD_PAD_SINK)
1427 return -EINVAL;
1428
1429 mutex_lock(&fimc->lock);
1430
1431 switch (sel->target) {
1432 case V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS:
1433 f = &ctx->d_frame;
1434 case V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS:
1435 r->width = f->o_width;
1436 r->height = f->o_height;
1437 r->left = 0;
1438 r->top = 0;
1439 mutex_unlock(&fimc->lock);
1440 return 0;
1441
1442 case V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL:
1443 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1444 break;
1445 case V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL:
1446 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1447 f = &ctx->d_frame;
1448 break;
1449 default:
1450 mutex_unlock(&fimc->lock);
1451 return -EINVAL;
1452 }
1453
1454 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1455 sel->r = *try_sel;
1456 } else {
1457 r->left = f->offs_h;
1458 r->top = f->offs_v;
1459 r->width = f->width;
1460 r->height = f->height;
1461 }
1462
1463 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1464 sel->pad, r->left, r->top, r->width, r->height,
1465 f->f_width, f->f_height);
1466
1467 mutex_unlock(&fimc->lock);
1468 return 0;
1469 }
1470
1471 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1472 struct v4l2_subdev_fh *fh,
1473 struct v4l2_subdev_selection *sel)
1474 {
1475 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1476 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1477 struct fimc_frame *f = &ctx->s_frame;
1478 struct v4l2_rect *r = &sel->r;
1479 struct v4l2_rect *try_sel;
1480 unsigned long flags;
1481
1482 if (sel->pad != FIMC_SD_PAD_SINK)
1483 return -EINVAL;
1484
1485 mutex_lock(&fimc->lock);
1486 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1487
1488 switch (sel->target) {
1489 case V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS:
1490 f = &ctx->d_frame;
1491 case V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS:
1492 r->width = f->o_width;
1493 r->height = f->o_height;
1494 r->left = 0;
1495 r->top = 0;
1496 mutex_unlock(&fimc->lock);
1497 return 0;
1498
1499 case V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL:
1500 try_sel = v4l2_subdev_get_try_crop(fh, sel->pad);
1501 break;
1502 case V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL:
1503 try_sel = v4l2_subdev_get_try_compose(fh, sel->pad);
1504 f = &ctx->d_frame;
1505 break;
1506 default:
1507 mutex_unlock(&fimc->lock);
1508 return -EINVAL;
1509 }
1510
1511 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1512 *try_sel = sel->r;
1513 } else {
1514 spin_lock_irqsave(&fimc->slock, flags);
1515 set_frame_crop(f, r->left, r->top, r->width, r->height);
1516 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1517 spin_unlock_irqrestore(&fimc->slock, flags);
1518 if (sel->target == V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL)
1519 ctx->state |= FIMC_COMPOSE;
1520 }
1521
1522 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1523 r->width, r->height);
1524
1525 mutex_unlock(&fimc->lock);
1526 return 0;
1527 }
1528
1529 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1530 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1531 .get_selection = fimc_subdev_get_selection,
1532 .set_selection = fimc_subdev_set_selection,
1533 .get_fmt = fimc_subdev_get_fmt,
1534 .set_fmt = fimc_subdev_set_fmt,
1535 };
1536
1537 static struct v4l2_subdev_ops fimc_subdev_ops = {
1538 .pad = &fimc_subdev_pad_ops,
1539 };
1540
1541 /* Set default format at the sensor and host interface */
1542 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1543 {
1544 struct v4l2_format fmt = {
1545 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1546 .fmt.pix_mp = {
1547 .width = 640,
1548 .height = 480,
1549 .pixelformat = V4L2_PIX_FMT_YUYV,
1550 .field = V4L2_FIELD_NONE,
1551 .colorspace = V4L2_COLORSPACE_JPEG,
1552 },
1553 };
1554
1555 return fimc_capture_set_format(fimc, &fmt);
1556 }
1557
1558 /* fimc->lock must be already initialized */
1559 static int fimc_register_capture_device(struct fimc_dev *fimc,
1560 struct v4l2_device *v4l2_dev)
1561 {
1562 struct video_device *vfd;
1563 struct fimc_vid_cap *vid_cap;
1564 struct fimc_ctx *ctx;
1565 struct vb2_queue *q;
1566 int ret = -ENOMEM;
1567
1568 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
1569 if (!ctx)
1570 return -ENOMEM;
1571
1572 ctx->fimc_dev = fimc;
1573 ctx->in_path = FIMC_IO_CAMERA;
1574 ctx->out_path = FIMC_IO_DMA;
1575 ctx->state = FIMC_CTX_CAP;
1576 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1577 ctx->d_frame.fmt = ctx->s_frame.fmt;
1578
1579 vfd = video_device_alloc();
1580 if (!vfd) {
1581 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
1582 goto err_vd_alloc;
1583 }
1584
1585 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1586
1587 vfd->fops = &fimc_capture_fops;
1588 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1589 vfd->v4l2_dev = v4l2_dev;
1590 vfd->minor = -1;
1591 vfd->release = video_device_release;
1592 vfd->lock = &fimc->lock;
1593 /* Locking in file operations other than ioctl should be done
1594 by the driver, not the V4L2 core.
1595 This driver needs auditing so that this flag can be removed. */
1596 set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
1597 video_set_drvdata(vfd, fimc);
1598
1599 vid_cap = &fimc->vid_cap;
1600 vid_cap->vfd = vfd;
1601 vid_cap->active_buf_cnt = 0;
1602 vid_cap->reqbufs_count = 0;
1603 vid_cap->refcnt = 0;
1604
1605 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1606 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1607 vid_cap->ctx = ctx;
1608
1609 q = &fimc->vid_cap.vbq;
1610 memset(q, 0, sizeof(*q));
1611 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1612 q->io_modes = VB2_MMAP | VB2_USERPTR;
1613 q->drv_priv = fimc->vid_cap.ctx;
1614 q->ops = &fimc_capture_qops;
1615 q->mem_ops = &vb2_dma_contig_memops;
1616 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1617
1618 vb2_queue_init(q);
1619
1620 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1621 ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
1622 if (ret)
1623 goto err_ent;
1624
1625 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1626 if (ret)
1627 goto err_vd;
1628
1629 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1630 vfd->name, video_device_node_name(vfd));
1631
1632 vfd->ctrl_handler = &ctx->ctrls.handler;
1633 return 0;
1634
1635 err_vd:
1636 media_entity_cleanup(&vfd->entity);
1637 err_ent:
1638 video_device_release(vfd);
1639 err_vd_alloc:
1640 kfree(ctx);
1641 return ret;
1642 }
1643
1644 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1645 {
1646 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1647 int ret;
1648
1649 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1650 if (ret)
1651 return ret;
1652
1653 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1654 if (ret)
1655 fimc_unregister_m2m_device(fimc);
1656
1657 return ret;
1658 }
1659
1660 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1661 {
1662 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1663
1664 if (fimc == NULL)
1665 return;
1666
1667 fimc_unregister_m2m_device(fimc);
1668
1669 if (fimc->vid_cap.vfd) {
1670 media_entity_cleanup(&fimc->vid_cap.vfd->entity);
1671 video_unregister_device(fimc->vid_cap.vfd);
1672 fimc->vid_cap.vfd = NULL;
1673 }
1674
1675 kfree(fimc->vid_cap.ctx);
1676 fimc->vid_cap.ctx = NULL;
1677 }
1678
1679 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1680 .registered = fimc_capture_subdev_registered,
1681 .unregistered = fimc_capture_subdev_unregistered,
1682 };
1683
1684 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1685 {
1686 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1687 int ret;
1688
1689 v4l2_subdev_init(sd, &fimc_subdev_ops);
1690 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1691 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1692
1693 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1694 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1695 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1696 fimc->vid_cap.sd_pads, 0);
1697 if (ret)
1698 return ret;
1699
1700 sd->entity.ops = &fimc_sd_media_ops;
1701 sd->internal_ops = &fimc_capture_sd_internal_ops;
1702 v4l2_set_subdevdata(sd, fimc);
1703 return 0;
1704 }
1705
1706 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1707 {
1708 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1709
1710 v4l2_device_unregister_subdev(sd);
1711 media_entity_cleanup(&sd->entity);
1712 v4l2_set_subdevdata(sd, NULL);
1713 }
Linux kernel - Deliverables
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