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[media] s5p-fimc: Use v4l2_subdev internal ops to register video nodes
[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 - 2011 Samsung Electronics Co., Ltd.
5 * Author: 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
33 static int fimc_init_capture(struct fimc_dev *fimc)
34 {
35 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
36 struct fimc_sensor_info *sensor;
37 unsigned long flags;
38 int ret = 0;
39
40 if (fimc->pipeline.sensor == NULL || ctx == NULL)
41 return -ENXIO;
42 if (ctx->s_frame.fmt == NULL)
43 return -EINVAL;
44
45 sensor = v4l2_get_subdev_hostdata(fimc->pipeline.sensor);
46
47 spin_lock_irqsave(&fimc->slock, flags);
48 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
49 fimc_set_yuv_order(ctx);
50
51 fimc_hw_set_camera_polarity(fimc, sensor->pdata);
52 fimc_hw_set_camera_type(fimc, sensor->pdata);
53 fimc_hw_set_camera_source(fimc, sensor->pdata);
54 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
55
56 ret = fimc_set_scaler_info(ctx);
57 if (!ret) {
58 fimc_hw_set_input_path(ctx);
59 fimc_hw_set_prescaler(ctx);
60 fimc_hw_set_mainscaler(ctx);
61 fimc_hw_set_target_format(ctx);
62 fimc_hw_set_rotation(ctx);
63 fimc_hw_set_effect(ctx, false);
64 fimc_hw_set_output_path(ctx);
65 fimc_hw_set_out_dma(ctx);
66 if (fimc->variant->has_alpha)
67 fimc_hw_set_rgb_alpha(ctx);
68 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
69 }
70 spin_unlock_irqrestore(&fimc->slock, flags);
71 return ret;
72 }
73
74 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
75 {
76 struct fimc_vid_cap *cap = &fimc->vid_cap;
77 struct fimc_vid_buffer *buf;
78 unsigned long flags;
79 bool streaming;
80
81 spin_lock_irqsave(&fimc->slock, flags);
82 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
83
84 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
85 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
86 if (suspend)
87 fimc->state |= (1 << ST_CAPT_SUSPENDED);
88 else
89 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
90
91 /* Release unused buffers */
92 while (!suspend && !list_empty(&cap->pending_buf_q)) {
93 buf = fimc_pending_queue_pop(cap);
94 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
95 }
96 /* If suspending put unused buffers onto pending queue */
97 while (!list_empty(&cap->active_buf_q)) {
98 buf = fimc_active_queue_pop(cap);
99 if (suspend)
100 fimc_pending_queue_add(cap, buf);
101 else
102 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
103 }
104
105 fimc_hw_reset(fimc);
106 cap->buf_index = 0;
107
108 spin_unlock_irqrestore(&fimc->slock, flags);
109
110 if (streaming)
111 return fimc_pipeline_s_stream(fimc, 0);
112 else
113 return 0;
114 }
115
116 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
117 {
118 unsigned long flags;
119
120 if (!fimc_capture_active(fimc))
121 return 0;
122
123 spin_lock_irqsave(&fimc->slock, flags);
124 set_bit(ST_CAPT_SHUT, &fimc->state);
125 fimc_deactivate_capture(fimc);
126 spin_unlock_irqrestore(&fimc->slock, flags);
127
128 wait_event_timeout(fimc->irq_queue,
129 !test_bit(ST_CAPT_SHUT, &fimc->state),
130 (2*HZ/10)); /* 200 ms */
131
132 return fimc_capture_state_cleanup(fimc, suspend);
133 }
134
135 /**
136 * fimc_capture_config_update - apply the camera interface configuration
137 *
138 * To be called from within the interrupt handler with fimc.slock
139 * spinlock held. It updates the camera pixel crop, rotation and
140 * image flip in H/W.
141 */
142 static int fimc_capture_config_update(struct fimc_ctx *ctx)
143 {
144 struct fimc_dev *fimc = ctx->fimc_dev;
145 int ret;
146
147 if (!test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
148 return 0;
149
150 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
151
152 ret = fimc_set_scaler_info(ctx);
153 if (ret)
154 return ret;
155
156 fimc_hw_set_prescaler(ctx);
157 fimc_hw_set_mainscaler(ctx);
158 fimc_hw_set_target_format(ctx);
159 fimc_hw_set_rotation(ctx);
160 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
161 fimc_hw_set_out_dma(ctx);
162 if (fimc->variant->has_alpha)
163 fimc_hw_set_rgb_alpha(ctx);
164
165 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
166 return ret;
167 }
168
169 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
170 {
171 struct fimc_vid_cap *cap = &fimc->vid_cap;
172 struct fimc_vid_buffer *v_buf;
173 struct timeval *tv;
174 struct timespec ts;
175
176 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
177 wake_up(&fimc->irq_queue);
178 goto done;
179 }
180
181 if (!list_empty(&cap->active_buf_q) &&
182 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
183 ktime_get_real_ts(&ts);
184
185 v_buf = fimc_active_queue_pop(cap);
186
187 tv = &v_buf->vb.v4l2_buf.timestamp;
188 tv->tv_sec = ts.tv_sec;
189 tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
190 v_buf->vb.v4l2_buf.sequence = cap->frame_count++;
191
192 vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE);
193 }
194
195 if (!list_empty(&cap->pending_buf_q)) {
196
197 v_buf = fimc_pending_queue_pop(cap);
198 fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index);
199 v_buf->index = cap->buf_index;
200
201 /* Move the buffer to the capture active queue */
202 fimc_active_queue_add(cap, v_buf);
203
204 dbg("next frame: %d, done frame: %d",
205 fimc_hw_get_frame_index(fimc), v_buf->index);
206
207 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
208 cap->buf_index = 0;
209 }
210
211 if (cap->active_buf_cnt == 0) {
212 if (deq_buf)
213 clear_bit(ST_CAPT_RUN, &fimc->state);
214
215 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
216 cap->buf_index = 0;
217 } else {
218 set_bit(ST_CAPT_RUN, &fimc->state);
219 }
220
221 fimc_capture_config_update(cap->ctx);
222 done:
223 if (cap->active_buf_cnt == 1) {
224 fimc_deactivate_capture(fimc);
225 clear_bit(ST_CAPT_STREAM, &fimc->state);
226 }
227
228 dbg("frame: %d, active_buf_cnt: %d",
229 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
230 }
231
232
233 static int start_streaming(struct vb2_queue *q, unsigned int count)
234 {
235 struct fimc_ctx *ctx = q->drv_priv;
236 struct fimc_dev *fimc = ctx->fimc_dev;
237 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
238 int min_bufs;
239 int ret;
240
241 vid_cap->frame_count = 0;
242
243 ret = fimc_init_capture(fimc);
244 if (ret)
245 goto error;
246
247 set_bit(ST_CAPT_PEND, &fimc->state);
248
249 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
250
251 if (vid_cap->active_buf_cnt >= min_bufs &&
252 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
253 fimc_activate_capture(ctx);
254
255 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
256 fimc_pipeline_s_stream(fimc, 1);
257 }
258
259 return 0;
260 error:
261 fimc_capture_state_cleanup(fimc, false);
262 return ret;
263 }
264
265 static int stop_streaming(struct vb2_queue *q)
266 {
267 struct fimc_ctx *ctx = q->drv_priv;
268 struct fimc_dev *fimc = ctx->fimc_dev;
269
270 if (!fimc_capture_active(fimc))
271 return -EINVAL;
272
273 return fimc_stop_capture(fimc, false);
274 }
275
276 int fimc_capture_suspend(struct fimc_dev *fimc)
277 {
278 bool suspend = fimc_capture_busy(fimc);
279
280 int ret = fimc_stop_capture(fimc, suspend);
281 if (ret)
282 return ret;
283 return fimc_pipeline_shutdown(fimc);
284 }
285
286 static void buffer_queue(struct vb2_buffer *vb);
287
288 int fimc_capture_resume(struct fimc_dev *fimc)
289 {
290 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
291 struct fimc_vid_buffer *buf;
292 int i;
293
294 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
295 return 0;
296
297 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
298 vid_cap->buf_index = 0;
299 fimc_pipeline_initialize(fimc, &fimc->vid_cap.vfd->entity,
300 false);
301 fimc_init_capture(fimc);
302
303 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
304
305 for (i = 0; i < vid_cap->reqbufs_count; i++) {
306 if (list_empty(&vid_cap->pending_buf_q))
307 break;
308 buf = fimc_pending_queue_pop(vid_cap);
309 buffer_queue(&buf->vb);
310 }
311 return 0;
312
313 }
314
315 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
316 unsigned int *num_buffers, unsigned int *num_planes,
317 unsigned int sizes[], void *allocators[])
318 {
319 const struct v4l2_pix_format_mplane *pixm = NULL;
320 struct fimc_ctx *ctx = vq->drv_priv;
321 struct fimc_frame *frame = &ctx->d_frame;
322 struct fimc_fmt *fmt = frame->fmt;
323 unsigned long wh;
324 int i;
325
326 if (pfmt) {
327 pixm = &pfmt->fmt.pix_mp;
328 fmt = fimc_find_format(&pixm->pixelformat, NULL,
329 FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1);
330 wh = pixm->width * pixm->height;
331 } else {
332 wh = frame->f_width * frame->f_height;
333 }
334
335 if (fmt == NULL)
336 return -EINVAL;
337
338 *num_planes = fmt->memplanes;
339
340 for (i = 0; i < fmt->memplanes; i++) {
341 unsigned int size = (wh * fmt->depth[i]) / 8;
342 if (pixm)
343 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
344 else
345 sizes[i] = size;
346 allocators[i] = ctx->fimc_dev->alloc_ctx;
347 }
348
349 return 0;
350 }
351
352 static int buffer_prepare(struct vb2_buffer *vb)
353 {
354 struct vb2_queue *vq = vb->vb2_queue;
355 struct fimc_ctx *ctx = vq->drv_priv;
356 int i;
357
358 if (ctx->d_frame.fmt == NULL)
359 return -EINVAL;
360
361 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
362 unsigned long size = ctx->d_frame.payload[i];
363
364 if (vb2_plane_size(vb, i) < size) {
365 v4l2_err(ctx->fimc_dev->vid_cap.vfd,
366 "User buffer too small (%ld < %ld)\n",
367 vb2_plane_size(vb, i), size);
368 return -EINVAL;
369 }
370 vb2_set_plane_payload(vb, i, size);
371 }
372
373 return 0;
374 }
375
376 static void buffer_queue(struct vb2_buffer *vb)
377 {
378 struct fimc_vid_buffer *buf
379 = container_of(vb, struct fimc_vid_buffer, vb);
380 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
381 struct fimc_dev *fimc = ctx->fimc_dev;
382 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
383 unsigned long flags;
384 int min_bufs;
385
386 spin_lock_irqsave(&fimc->slock, flags);
387 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
388
389 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
390 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
391 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
392 /* Setup the buffer directly for processing. */
393 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
394 vid_cap->buf_index;
395
396 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
397 buf->index = vid_cap->buf_index;
398 fimc_active_queue_add(vid_cap, buf);
399
400 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
401 vid_cap->buf_index = 0;
402 } else {
403 fimc_pending_queue_add(vid_cap, buf);
404 }
405
406 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
407
408
409 if (vb2_is_streaming(&vid_cap->vbq) &&
410 vid_cap->active_buf_cnt >= min_bufs &&
411 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
412 fimc_activate_capture(ctx);
413 spin_unlock_irqrestore(&fimc->slock, flags);
414
415 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
416 fimc_pipeline_s_stream(fimc, 1);
417 return;
418 }
419 spin_unlock_irqrestore(&fimc->slock, flags);
420 }
421
422 static void fimc_lock(struct vb2_queue *vq)
423 {
424 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
425 mutex_lock(&ctx->fimc_dev->lock);
426 }
427
428 static void fimc_unlock(struct vb2_queue *vq)
429 {
430 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
431 mutex_unlock(&ctx->fimc_dev->lock);
432 }
433
434 static struct vb2_ops fimc_capture_qops = {
435 .queue_setup = queue_setup,
436 .buf_prepare = buffer_prepare,
437 .buf_queue = buffer_queue,
438 .wait_prepare = fimc_unlock,
439 .wait_finish = fimc_lock,
440 .start_streaming = start_streaming,
441 .stop_streaming = stop_streaming,
442 };
443
444 /**
445 * fimc_capture_ctrls_create - initialize the control handler
446 * Initialize the capture video node control handler and fill it
447 * with the FIMC controls. Inherit any sensor's controls if the
448 * 'user_subdev_api' flag is false (default behaviour).
449 * This function need to be called with the graph mutex held.
450 */
451 int fimc_capture_ctrls_create(struct fimc_dev *fimc)
452 {
453 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
454 int ret;
455
456 if (WARN_ON(vid_cap->ctx == NULL))
457 return -ENXIO;
458 if (vid_cap->ctx->ctrls_rdy)
459 return 0;
460
461 ret = fimc_ctrls_create(vid_cap->ctx);
462 if (ret || vid_cap->user_subdev_api)
463 return ret;
464
465 return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrl_handler,
466 fimc->pipeline.sensor->ctrl_handler);
467 }
468
469 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
470
471 static int fimc_capture_open(struct file *file)
472 {
473 struct fimc_dev *fimc = video_drvdata(file);
474 int ret = v4l2_fh_open(file);
475
476 if (ret)
477 return ret;
478
479 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
480
481 /* Return if the corresponding video mem2mem node is already opened. */
482 if (fimc_m2m_active(fimc))
483 return -EBUSY;
484
485 set_bit(ST_CAPT_BUSY, &fimc->state);
486 pm_runtime_get_sync(&fimc->pdev->dev);
487
488 if (++fimc->vid_cap.refcnt == 1) {
489 ret = fimc_pipeline_initialize(fimc,
490 &fimc->vid_cap.vfd->entity, true);
491 if (ret < 0) {
492 dev_err(&fimc->pdev->dev,
493 "Video pipeline initialization failed\n");
494 pm_runtime_put_sync(&fimc->pdev->dev);
495 fimc->vid_cap.refcnt--;
496 v4l2_fh_release(file);
497 clear_bit(ST_CAPT_BUSY, &fimc->state);
498 return ret;
499 }
500 ret = fimc_capture_ctrls_create(fimc);
501
502 if (!ret && !fimc->vid_cap.user_subdev_api)
503 ret = fimc_capture_set_default_format(fimc);
504 }
505 return ret;
506 }
507
508 static int fimc_capture_close(struct file *file)
509 {
510 struct fimc_dev *fimc = video_drvdata(file);
511
512 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
513
514 if (--fimc->vid_cap.refcnt == 0) {
515 clear_bit(ST_CAPT_BUSY, &fimc->state);
516 fimc_stop_capture(fimc, false);
517 fimc_pipeline_shutdown(fimc);
518 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
519 }
520
521 pm_runtime_put(&fimc->pdev->dev);
522
523 if (fimc->vid_cap.refcnt == 0) {
524 vb2_queue_release(&fimc->vid_cap.vbq);
525 fimc_ctrls_delete(fimc->vid_cap.ctx);
526 }
527 return v4l2_fh_release(file);
528 }
529
530 static unsigned int fimc_capture_poll(struct file *file,
531 struct poll_table_struct *wait)
532 {
533 struct fimc_dev *fimc = video_drvdata(file);
534
535 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
536 }
537
538 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
539 {
540 struct fimc_dev *fimc = video_drvdata(file);
541
542 return vb2_mmap(&fimc->vid_cap.vbq, vma);
543 }
544
545 static const struct v4l2_file_operations fimc_capture_fops = {
546 .owner = THIS_MODULE,
547 .open = fimc_capture_open,
548 .release = fimc_capture_close,
549 .poll = fimc_capture_poll,
550 .unlocked_ioctl = video_ioctl2,
551 .mmap = fimc_capture_mmap,
552 };
553
554 /*
555 * Format and crop negotiation helpers
556 */
557
558 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
559 u32 *width, u32 *height,
560 u32 *code, u32 *fourcc, int pad)
561 {
562 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
563 struct fimc_dev *fimc = ctx->fimc_dev;
564 struct samsung_fimc_variant *var = fimc->variant;
565 struct fimc_pix_limit *pl = var->pix_limit;
566 struct fimc_frame *dst = &ctx->d_frame;
567 u32 depth, min_w, max_w, min_h, align_h = 3;
568 u32 mask = FMT_FLAGS_CAM;
569 struct fimc_fmt *ffmt;
570
571 /* Color conversion from/to JPEG is not supported */
572 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
573 fimc_fmt_is_jpeg(ctx->s_frame.fmt->color))
574 *code = V4L2_MBUS_FMT_JPEG_1X8;
575
576 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
577 mask |= FMT_FLAGS_M2M;
578
579 ffmt = fimc_find_format(fourcc, code, mask, 0);
580 if (WARN_ON(!ffmt))
581 return NULL;
582 if (code)
583 *code = ffmt->mbus_code;
584 if (fourcc)
585 *fourcc = ffmt->fourcc;
586
587 if (pad == FIMC_SD_PAD_SINK) {
588 max_w = fimc_fmt_is_jpeg(ffmt->color) ?
589 pl->scaler_dis_w : pl->scaler_en_w;
590 /* Apply the camera input interface pixel constraints */
591 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
592 height, max_t(u32, *height, 32),
593 FIMC_CAMIF_MAX_HEIGHT,
594 fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1,
595 0);
596 return ffmt;
597 }
598 /* Can't scale or crop in transparent (JPEG) transfer mode */
599 if (fimc_fmt_is_jpeg(ffmt->color)) {
600 *width = ctx->s_frame.f_width;
601 *height = ctx->s_frame.f_height;
602 return ffmt;
603 }
604 /* Apply the scaler and the output DMA constraints */
605 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
606 min_w = ctx->state & FIMC_DST_CROP ? dst->width : var->min_out_pixsize;
607 min_h = ctx->state & FIMC_DST_CROP ? dst->height : var->min_out_pixsize;
608 if (var->min_vsize_align == 1 && !rotation)
609 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
610
611 depth = fimc_get_format_depth(ffmt);
612 v4l_bound_align_image(width, min_w, max_w,
613 ffs(var->min_out_pixsize) - 1,
614 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
615 align_h,
616 64/(ALIGN(depth, 8)));
617
618 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
619 pad, code ? *code : 0, *width, *height,
620 dst->f_width, dst->f_height);
621
622 return ffmt;
623 }
624
625 static void fimc_capture_try_crop(struct fimc_ctx *ctx, struct v4l2_rect *r,
626 int pad)
627 {
628 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
629 struct fimc_dev *fimc = ctx->fimc_dev;
630 struct samsung_fimc_variant *var = fimc->variant;
631 struct fimc_pix_limit *pl = var->pix_limit;
632 struct fimc_frame *sink = &ctx->s_frame;
633 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
634 u32 align_sz = 0, align_h = 4;
635 u32 max_sc_h, max_sc_v;
636
637 /* In JPEG transparent transfer mode cropping is not supported */
638 if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) {
639 r->width = sink->f_width;
640 r->height = sink->f_height;
641 r->left = r->top = 0;
642 return;
643 }
644 if (pad == FIMC_SD_PAD_SOURCE) {
645 if (ctx->rotation != 90 && ctx->rotation != 270)
646 align_h = 1;
647 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
648 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
649 min_sz = var->min_out_pixsize;
650 } else {
651 u32 depth = fimc_get_format_depth(sink->fmt);
652 align_sz = 64/ALIGN(depth, 8);
653 min_sz = var->min_inp_pixsize;
654 min_w = min_h = min_sz;
655 max_sc_h = max_sc_v = 1;
656 }
657 /*
658 * For the crop rectangle at source pad the following constraints
659 * must be met:
660 * - it must fit in the sink pad format rectangle (f_width/f_height);
661 * - maximum downscaling ratio is 64;
662 * - maximum crop size depends if the rotator is used or not;
663 * - the sink pad format width/height must be 4 multiple of the
664 * prescaler ratios determined by sink pad size and source pad crop,
665 * the prescaler ratio is returned by fimc_get_scaler_factor().
666 */
667 max_w = min_t(u32,
668 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
669 rotate ? sink->f_height : sink->f_width);
670 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
671 if (pad == FIMC_SD_PAD_SOURCE) {
672 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
673 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
674 if (rotate) {
675 swap(max_sc_h, max_sc_v);
676 swap(min_w, min_h);
677 }
678 }
679 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
680 &r->height, min_h, max_h, align_h,
681 align_sz);
682 /* Adjust left/top if cropping rectangle is out of bounds */
683 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
684 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
685 r->left = round_down(r->left, var->hor_offs_align);
686
687 dbg("pad%d: (%d,%d)/%dx%d, sink fmt: %dx%d",
688 pad, r->left, r->top, r->width, r->height,
689 sink->f_width, sink->f_height);
690 }
691
692 /*
693 * The video node ioctl operations
694 */
695 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
696 struct v4l2_capability *cap)
697 {
698 struct fimc_dev *fimc = video_drvdata(file);
699
700 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
701 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
702 cap->bus_info[0] = 0;
703 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
704
705 return 0;
706 }
707
708 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
709 struct v4l2_fmtdesc *f)
710 {
711 struct fimc_fmt *fmt;
712
713 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
714 f->index);
715 if (!fmt)
716 return -EINVAL;
717 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
718 f->pixelformat = fmt->fourcc;
719 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
720 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
721 return 0;
722 }
723
724 /**
725 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
726 * elements
727 * @ctx: FIMC capture context
728 * @tfmt: media bus format to try/set on subdevs
729 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
730 * @set: true to set format on subdevs, false to try only
731 */
732 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
733 struct v4l2_mbus_framefmt *tfmt,
734 struct fimc_fmt **fmt_id,
735 bool set)
736 {
737 struct fimc_dev *fimc = ctx->fimc_dev;
738 struct v4l2_subdev *sd = fimc->pipeline.sensor;
739 struct v4l2_subdev *csis = fimc->pipeline.csis;
740 struct v4l2_subdev_format sfmt;
741 struct v4l2_mbus_framefmt *mf = &sfmt.format;
742 struct fimc_fmt *ffmt = NULL;
743 int ret, i = 0;
744
745 if (WARN_ON(!sd || !tfmt))
746 return -EINVAL;
747
748 memset(&sfmt, 0, sizeof(sfmt));
749 sfmt.format = *tfmt;
750
751 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
752 while (1) {
753 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
754 FMT_FLAGS_CAM, i++);
755 if (ffmt == NULL) {
756 /*
757 * Notify user-space if common pixel code for
758 * host and sensor does not exist.
759 */
760 return -EINVAL;
761 }
762 mf->code = tfmt->code = ffmt->mbus_code;
763
764 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
765 if (ret)
766 return ret;
767 if (mf->code != tfmt->code) {
768 mf->code = 0;
769 continue;
770 }
771 if (mf->width != tfmt->width || mf->height != tfmt->height) {
772 u32 fcc = ffmt->fourcc;
773 tfmt->width = mf->width;
774 tfmt->height = mf->height;
775 ffmt = fimc_capture_try_format(ctx,
776 &tfmt->width, &tfmt->height,
777 NULL, &fcc, FIMC_SD_PAD_SOURCE);
778 if (ffmt && ffmt->mbus_code)
779 mf->code = ffmt->mbus_code;
780 if (mf->width != tfmt->width ||
781 mf->height != tfmt->height)
782 continue;
783 tfmt->code = mf->code;
784 }
785 if (csis)
786 ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
787
788 if (mf->code == tfmt->code &&
789 mf->width == tfmt->width && mf->height == tfmt->height)
790 break;
791 }
792
793 if (fmt_id && ffmt)
794 *fmt_id = ffmt;
795 *tfmt = *mf;
796
797 dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt);
798 return 0;
799 }
800
801 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
802 struct v4l2_format *f)
803 {
804 struct fimc_dev *fimc = video_drvdata(file);
805 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
806
807 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
808 return -EINVAL;
809
810 return fimc_fill_format(&ctx->d_frame, f);
811 }
812
813 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
814 struct v4l2_format *f)
815 {
816 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
817 struct fimc_dev *fimc = video_drvdata(file);
818 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
819 struct v4l2_mbus_framefmt mf;
820 struct fimc_fmt *ffmt = NULL;
821
822 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
823 return -EINVAL;
824
825 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
826 fimc_capture_try_format(ctx, &pix->width, &pix->height,
827 NULL, &pix->pixelformat,
828 FIMC_SD_PAD_SINK);
829 ctx->s_frame.f_width = pix->width;
830 ctx->s_frame.f_height = pix->height;
831 }
832 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
833 NULL, &pix->pixelformat,
834 FIMC_SD_PAD_SOURCE);
835 if (!ffmt)
836 return -EINVAL;
837
838 if (!fimc->vid_cap.user_subdev_api) {
839 mf.width = pix->width;
840 mf.height = pix->height;
841 mf.code = ffmt->mbus_code;
842 fimc_md_graph_lock(fimc);
843 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
844 fimc_md_graph_unlock(fimc);
845
846 pix->width = mf.width;
847 pix->height = mf.height;
848 if (ffmt)
849 pix->pixelformat = ffmt->fourcc;
850 }
851
852 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
853 return 0;
854 }
855
856 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg)
857 {
858 ctx->scaler.enabled = !jpeg;
859 fimc_ctrls_activate(ctx, !jpeg);
860
861 if (jpeg)
862 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
863 else
864 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
865 }
866
867 static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f)
868 {
869 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
870 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
871 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
872 struct fimc_frame *ff = &ctx->d_frame;
873 struct fimc_fmt *s_fmt = NULL;
874 int ret, i;
875
876 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
877 return -EINVAL;
878 if (vb2_is_busy(&fimc->vid_cap.vbq))
879 return -EBUSY;
880
881 /* Pre-configure format at camera interface input, for JPEG only */
882 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
883 fimc_capture_try_format(ctx, &pix->width, &pix->height,
884 NULL, &pix->pixelformat,
885 FIMC_SD_PAD_SINK);
886 ctx->s_frame.f_width = pix->width;
887 ctx->s_frame.f_height = pix->height;
888 }
889 /* Try the format at the scaler and the DMA output */
890 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
891 NULL, &pix->pixelformat,
892 FIMC_SD_PAD_SOURCE);
893 if (!ff->fmt)
894 return -EINVAL;
895
896 /* Update RGB Alpha control state and value range */
897 fimc_alpha_ctrl_update(ctx);
898
899 /* Try to match format at the host and the sensor */
900 if (!fimc->vid_cap.user_subdev_api) {
901 mf->code = ff->fmt->mbus_code;
902 mf->width = pix->width;
903 mf->height = pix->height;
904
905 fimc_md_graph_lock(fimc);
906 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
907 fimc_md_graph_unlock(fimc);
908 if (ret)
909 return ret;
910 pix->width = mf->width;
911 pix->height = mf->height;
912 }
913 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
914 for (i = 0; i < ff->fmt->colplanes; i++)
915 ff->payload[i] =
916 (pix->width * pix->height * ff->fmt->depth[i]) / 8;
917
918 set_frame_bounds(ff, pix->width, pix->height);
919 /* Reset the composition rectangle if not yet configured */
920 if (!(ctx->state & FIMC_DST_CROP))
921 set_frame_crop(ff, 0, 0, pix->width, pix->height);
922
923 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color));
924
925 /* Reset cropping and set format at the camera interface input */
926 if (!fimc->vid_cap.user_subdev_api) {
927 ctx->s_frame.fmt = s_fmt;
928 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
929 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
930 }
931
932 return ret;
933 }
934
935 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
936 struct v4l2_format *f)
937 {
938 struct fimc_dev *fimc = video_drvdata(file);
939
940 return fimc_capture_set_format(fimc, f);
941 }
942
943 static int fimc_cap_enum_input(struct file *file, void *priv,
944 struct v4l2_input *i)
945 {
946 struct fimc_dev *fimc = video_drvdata(file);
947 struct v4l2_subdev *sd = fimc->pipeline.sensor;
948
949 if (i->index != 0)
950 return -EINVAL;
951
952 i->type = V4L2_INPUT_TYPE_CAMERA;
953 if (sd)
954 strlcpy(i->name, sd->name, sizeof(i->name));
955 return 0;
956 }
957
958 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
959 {
960 return i == 0 ? i : -EINVAL;
961 }
962
963 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
964 {
965 *i = 0;
966 return 0;
967 }
968
969 /**
970 * fimc_pipeline_validate - check for formats inconsistencies
971 * between source and sink pad of each link
972 *
973 * Return 0 if all formats match or -EPIPE otherwise.
974 */
975 static int fimc_pipeline_validate(struct fimc_dev *fimc)
976 {
977 struct v4l2_subdev_format sink_fmt, src_fmt;
978 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
979 struct v4l2_subdev *sd;
980 struct media_pad *pad;
981 int ret;
982
983 /* Start with the video capture node pad */
984 pad = media_entity_remote_source(&vid_cap->vd_pad);
985 if (pad == NULL)
986 return -EPIPE;
987 /* FIMC.{N} subdevice */
988 sd = media_entity_to_v4l2_subdev(pad->entity);
989
990 while (1) {
991 /* Retrieve format at the sink pad */
992 pad = &sd->entity.pads[0];
993 if (!(pad->flags & MEDIA_PAD_FL_SINK))
994 break;
995 /* Don't call FIMC subdev operation to avoid nested locking */
996 if (sd == &fimc->vid_cap.subdev) {
997 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
998 sink_fmt.format.width = ff->f_width;
999 sink_fmt.format.height = ff->f_height;
1000 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1001 } else {
1002 sink_fmt.pad = pad->index;
1003 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1004 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1005 if (ret < 0 && ret != -ENOIOCTLCMD)
1006 return -EPIPE;
1007 }
1008 /* Retrieve format at the source pad */
1009 pad = media_entity_remote_source(pad);
1010 if (pad == NULL ||
1011 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1012 break;
1013
1014 sd = media_entity_to_v4l2_subdev(pad->entity);
1015 src_fmt.pad = pad->index;
1016 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1017 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1018 if (ret < 0 && ret != -ENOIOCTLCMD)
1019 return -EPIPE;
1020
1021 if (src_fmt.format.width != sink_fmt.format.width ||
1022 src_fmt.format.height != sink_fmt.format.height ||
1023 src_fmt.format.code != sink_fmt.format.code)
1024 return -EPIPE;
1025 }
1026 return 0;
1027 }
1028
1029 static int fimc_cap_streamon(struct file *file, void *priv,
1030 enum v4l2_buf_type type)
1031 {
1032 struct fimc_dev *fimc = video_drvdata(file);
1033 struct fimc_pipeline *p = &fimc->pipeline;
1034 int ret;
1035
1036 if (fimc_capture_active(fimc))
1037 return -EBUSY;
1038
1039 media_entity_pipeline_start(&p->sensor->entity, p->pipe);
1040
1041 if (fimc->vid_cap.user_subdev_api) {
1042 ret = fimc_pipeline_validate(fimc);
1043 if (ret)
1044 return ret;
1045 }
1046 return vb2_streamon(&fimc->vid_cap.vbq, type);
1047 }
1048
1049 static int fimc_cap_streamoff(struct file *file, void *priv,
1050 enum v4l2_buf_type type)
1051 {
1052 struct fimc_dev *fimc = video_drvdata(file);
1053 struct v4l2_subdev *sd = fimc->pipeline.sensor;
1054 int ret;
1055
1056 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
1057 if (ret == 0)
1058 media_entity_pipeline_stop(&sd->entity);
1059 return ret;
1060 }
1061
1062 static int fimc_cap_reqbufs(struct file *file, void *priv,
1063 struct v4l2_requestbuffers *reqbufs)
1064 {
1065 struct fimc_dev *fimc = video_drvdata(file);
1066 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
1067
1068 if (!ret)
1069 fimc->vid_cap.reqbufs_count = reqbufs->count;
1070 return ret;
1071 }
1072
1073 static int fimc_cap_querybuf(struct file *file, void *priv,
1074 struct v4l2_buffer *buf)
1075 {
1076 struct fimc_dev *fimc = video_drvdata(file);
1077
1078 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
1079 }
1080
1081 static int fimc_cap_qbuf(struct file *file, void *priv,
1082 struct v4l2_buffer *buf)
1083 {
1084 struct fimc_dev *fimc = video_drvdata(file);
1085
1086 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1087 }
1088
1089 static int fimc_cap_dqbuf(struct file *file, void *priv,
1090 struct v4l2_buffer *buf)
1091 {
1092 struct fimc_dev *fimc = video_drvdata(file);
1093
1094 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1095 }
1096
1097 static int fimc_cap_create_bufs(struct file *file, void *priv,
1098 struct v4l2_create_buffers *create)
1099 {
1100 struct fimc_dev *fimc = video_drvdata(file);
1101
1102 return vb2_create_bufs(&fimc->vid_cap.vbq, create);
1103 }
1104
1105 static int fimc_cap_prepare_buf(struct file *file, void *priv,
1106 struct v4l2_buffer *b)
1107 {
1108 struct fimc_dev *fimc = video_drvdata(file);
1109
1110 return vb2_prepare_buf(&fimc->vid_cap.vbq, b);
1111 }
1112
1113 static int fimc_cap_g_selection(struct file *file, void *fh,
1114 struct v4l2_selection *s)
1115 {
1116 struct fimc_dev *fimc = video_drvdata(file);
1117 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1118 struct fimc_frame *f = &ctx->s_frame;
1119
1120 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1121 return -EINVAL;
1122
1123 switch (s->target) {
1124 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1125 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1126 f = &ctx->d_frame;
1127 case V4L2_SEL_TGT_CROP_BOUNDS:
1128 case V4L2_SEL_TGT_CROP_DEFAULT:
1129 s->r.left = 0;
1130 s->r.top = 0;
1131 s->r.width = f->o_width;
1132 s->r.height = f->o_height;
1133 return 0;
1134
1135 case V4L2_SEL_TGT_COMPOSE_ACTIVE:
1136 f = &ctx->d_frame;
1137 case V4L2_SEL_TGT_CROP_ACTIVE:
1138 s->r.left = f->offs_h;
1139 s->r.top = f->offs_v;
1140 s->r.width = f->width;
1141 s->r.height = f->height;
1142 return 0;
1143 }
1144
1145 return -EINVAL;
1146 }
1147
1148 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
1149 int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
1150 {
1151 if (a->left < b->left || a->top < b->top)
1152 return 0;
1153 if (a->left + a->width > b->left + b->width)
1154 return 0;
1155 if (a->top + a->height > b->top + b->height)
1156 return 0;
1157
1158 return 1;
1159 }
1160
1161 static int fimc_cap_s_selection(struct file *file, void *fh,
1162 struct v4l2_selection *s)
1163 {
1164 struct fimc_dev *fimc = video_drvdata(file);
1165 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1166 struct v4l2_rect rect = s->r;
1167 struct fimc_frame *f;
1168 unsigned long flags;
1169 unsigned int pad;
1170
1171 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1172 return -EINVAL;
1173
1174 switch (s->target) {
1175 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1176 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1177 case V4L2_SEL_TGT_COMPOSE_ACTIVE:
1178 f = &ctx->d_frame;
1179 pad = FIMC_SD_PAD_SOURCE;
1180 break;
1181 case V4L2_SEL_TGT_CROP_BOUNDS:
1182 case V4L2_SEL_TGT_CROP_DEFAULT:
1183 case V4L2_SEL_TGT_CROP_ACTIVE:
1184 f = &ctx->s_frame;
1185 pad = FIMC_SD_PAD_SINK;
1186 break;
1187 default:
1188 return -EINVAL;
1189 }
1190
1191 fimc_capture_try_crop(ctx, &rect, pad);
1192
1193 if (s->flags & V4L2_SEL_FLAG_LE &&
1194 !enclosed_rectangle(&rect, &s->r))
1195 return -ERANGE;
1196
1197 if (s->flags & V4L2_SEL_FLAG_GE &&
1198 !enclosed_rectangle(&s->r, &rect))
1199 return -ERANGE;
1200
1201 s->r = rect;
1202 spin_lock_irqsave(&fimc->slock, flags);
1203 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1204 s->r.height);
1205 spin_unlock_irqrestore(&fimc->slock, flags);
1206
1207 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1208 return 0;
1209 }
1210
1211 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1212 .vidioc_querycap = fimc_vidioc_querycap_capture,
1213
1214 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1215 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1216 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1217 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1218
1219 .vidioc_reqbufs = fimc_cap_reqbufs,
1220 .vidioc_querybuf = fimc_cap_querybuf,
1221
1222 .vidioc_qbuf = fimc_cap_qbuf,
1223 .vidioc_dqbuf = fimc_cap_dqbuf,
1224
1225 .vidioc_prepare_buf = fimc_cap_prepare_buf,
1226 .vidioc_create_bufs = fimc_cap_create_bufs,
1227
1228 .vidioc_streamon = fimc_cap_streamon,
1229 .vidioc_streamoff = fimc_cap_streamoff,
1230
1231 .vidioc_g_selection = fimc_cap_g_selection,
1232 .vidioc_s_selection = fimc_cap_s_selection,
1233
1234 .vidioc_enum_input = fimc_cap_enum_input,
1235 .vidioc_s_input = fimc_cap_s_input,
1236 .vidioc_g_input = fimc_cap_g_input,
1237 };
1238
1239 /* Capture subdev media entity operations */
1240 static int fimc_link_setup(struct media_entity *entity,
1241 const struct media_pad *local,
1242 const struct media_pad *remote, u32 flags)
1243 {
1244 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1245 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1246
1247 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1248 return -EINVAL;
1249
1250 if (WARN_ON(fimc == NULL))
1251 return 0;
1252
1253 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1254 local->entity->name, remote->entity->name, flags,
1255 fimc->vid_cap.input);
1256
1257 if (flags & MEDIA_LNK_FL_ENABLED) {
1258 if (fimc->vid_cap.input != 0)
1259 return -EBUSY;
1260 fimc->vid_cap.input = sd->grp_id;
1261 return 0;
1262 }
1263
1264 fimc->vid_cap.input = 0;
1265 return 0;
1266 }
1267
1268 static const struct media_entity_operations fimc_sd_media_ops = {
1269 .link_setup = fimc_link_setup,
1270 };
1271
1272 /**
1273 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1274 * @sd: pointer to a subdev generating the notification
1275 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1276 * @arg: pointer to an u32 type integer that stores the frame payload value
1277 *
1278 * The End Of Frame notification sent by sensor subdev in its still capture
1279 * mode. If there is only a single VSYNC generated by the sensor at the
1280 * beginning of a frame transmission, FIMC does not issue the LastIrq
1281 * (end of frame) interrupt. And this notification is used to complete the
1282 * frame capture and returning a buffer to user-space. Subdev drivers should
1283 * call this notification from their last 'End of frame capture' interrupt.
1284 */
1285 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1286 void *arg)
1287 {
1288 struct fimc_sensor_info *sensor;
1289 struct fimc_vid_buffer *buf;
1290 struct fimc_md *fmd;
1291 struct fimc_dev *fimc;
1292 unsigned long flags;
1293
1294 if (sd == NULL)
1295 return;
1296
1297 sensor = v4l2_get_subdev_hostdata(sd);
1298 fmd = entity_to_fimc_mdev(&sd->entity);
1299
1300 spin_lock_irqsave(&fmd->slock, flags);
1301 fimc = sensor ? sensor->host : NULL;
1302
1303 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1304 test_bit(ST_CAPT_PEND, &fimc->state)) {
1305 unsigned long irq_flags;
1306 spin_lock_irqsave(&fimc->slock, irq_flags);
1307 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1308 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1309 struct fimc_vid_buffer, list);
1310 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1311 }
1312 fimc_capture_irq_handler(fimc, 1);
1313 fimc_deactivate_capture(fimc);
1314 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1315 }
1316 spin_unlock_irqrestore(&fmd->slock, flags);
1317 }
1318
1319 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1320 struct v4l2_subdev_fh *fh,
1321 struct v4l2_subdev_mbus_code_enum *code)
1322 {
1323 struct fimc_fmt *fmt;
1324
1325 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1326 if (!fmt)
1327 return -EINVAL;
1328 code->code = fmt->mbus_code;
1329 return 0;
1330 }
1331
1332 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1333 struct v4l2_subdev_fh *fh,
1334 struct v4l2_subdev_format *fmt)
1335 {
1336 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1337 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1338 struct v4l2_mbus_framefmt *mf;
1339 struct fimc_frame *ff;
1340
1341 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1342 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1343 fmt->format = *mf;
1344 return 0;
1345 }
1346 mf = &fmt->format;
1347 mf->colorspace = V4L2_COLORSPACE_JPEG;
1348 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1349
1350 mutex_lock(&fimc->lock);
1351 /* The pixel code is same on both input and output pad */
1352 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1353 mf->code = ctx->s_frame.fmt->mbus_code;
1354 mf->width = ff->f_width;
1355 mf->height = ff->f_height;
1356 mutex_unlock(&fimc->lock);
1357
1358 return 0;
1359 }
1360
1361 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1362 struct v4l2_subdev_fh *fh,
1363 struct v4l2_subdev_format *fmt)
1364 {
1365 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1366 struct v4l2_mbus_framefmt *mf = &fmt->format;
1367 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1368 struct fimc_frame *ff;
1369 struct fimc_fmt *ffmt;
1370
1371 dbg("pad%d: code: 0x%x, %dx%d",
1372 fmt->pad, mf->code, mf->width, mf->height);
1373
1374 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1375 vb2_is_busy(&fimc->vid_cap.vbq))
1376 return -EBUSY;
1377
1378 mutex_lock(&fimc->lock);
1379 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1380 &mf->code, NULL, fmt->pad);
1381 mutex_unlock(&fimc->lock);
1382 mf->colorspace = V4L2_COLORSPACE_JPEG;
1383
1384 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1385 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1386 *mf = fmt->format;
1387 return 0;
1388 }
1389 /* Update RGB Alpha control state and value range */
1390 fimc_alpha_ctrl_update(ctx);
1391
1392 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color));
1393
1394 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1395 &ctx->s_frame : &ctx->d_frame;
1396
1397 mutex_lock(&fimc->lock);
1398 set_frame_bounds(ff, mf->width, mf->height);
1399 fimc->vid_cap.mf = *mf;
1400 ff->fmt = ffmt;
1401
1402 /* Reset the crop rectangle if required. */
1403 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_DST_CROP)))
1404 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1405
1406 if (fmt->pad == FIMC_SD_PAD_SINK)
1407 ctx->state &= ~FIMC_DST_CROP;
1408 mutex_unlock(&fimc->lock);
1409 return 0;
1410 }
1411
1412 static int fimc_subdev_get_crop(struct v4l2_subdev *sd,
1413 struct v4l2_subdev_fh *fh,
1414 struct v4l2_subdev_crop *crop)
1415 {
1416 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1417 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1418 struct v4l2_rect *r = &crop->rect;
1419 struct fimc_frame *ff;
1420
1421 if (crop->which == V4L2_SUBDEV_FORMAT_TRY) {
1422 crop->rect = *v4l2_subdev_get_try_crop(fh, crop->pad);
1423 return 0;
1424 }
1425 ff = crop->pad == FIMC_SD_PAD_SINK ?
1426 &ctx->s_frame : &ctx->d_frame;
1427
1428 mutex_lock(&fimc->lock);
1429 r->left = ff->offs_h;
1430 r->top = ff->offs_v;
1431 r->width = ff->width;
1432 r->height = ff->height;
1433 mutex_unlock(&fimc->lock);
1434
1435 dbg("ff:%p, pad%d: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1436 ff, crop->pad, r->left, r->top, r->width, r->height,
1437 ff->f_width, ff->f_height);
1438
1439 return 0;
1440 }
1441
1442 static int fimc_subdev_set_crop(struct v4l2_subdev *sd,
1443 struct v4l2_subdev_fh *fh,
1444 struct v4l2_subdev_crop *crop)
1445 {
1446 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1447 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1448 struct v4l2_rect *r = &crop->rect;
1449 struct fimc_frame *ff;
1450 unsigned long flags;
1451
1452 dbg("(%d,%d)/%dx%d", r->left, r->top, r->width, r->height);
1453
1454 ff = crop->pad == FIMC_SD_PAD_SOURCE ?
1455 &ctx->d_frame : &ctx->s_frame;
1456
1457 mutex_lock(&fimc->lock);
1458 fimc_capture_try_crop(ctx, r, crop->pad);
1459
1460 if (crop->which == V4L2_SUBDEV_FORMAT_TRY) {
1461 mutex_unlock(&fimc->lock);
1462 *v4l2_subdev_get_try_crop(fh, crop->pad) = *r;
1463 return 0;
1464 }
1465 spin_lock_irqsave(&fimc->slock, flags);
1466 set_frame_crop(ff, r->left, r->top, r->width, r->height);
1467 if (crop->pad == FIMC_SD_PAD_SOURCE)
1468 ctx->state |= FIMC_DST_CROP;
1469
1470 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1471 spin_unlock_irqrestore(&fimc->slock, flags);
1472
1473 dbg("pad%d: (%d,%d)/%dx%d", crop->pad, r->left, r->top,
1474 r->width, r->height);
1475
1476 mutex_unlock(&fimc->lock);
1477 return 0;
1478 }
1479
1480 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1481 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1482 .get_fmt = fimc_subdev_get_fmt,
1483 .set_fmt = fimc_subdev_set_fmt,
1484 .get_crop = fimc_subdev_get_crop,
1485 .set_crop = fimc_subdev_set_crop,
1486 };
1487
1488 static struct v4l2_subdev_ops fimc_subdev_ops = {
1489 .pad = &fimc_subdev_pad_ops,
1490 };
1491
1492 /* Set default format at the sensor and host interface */
1493 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1494 {
1495 struct v4l2_format fmt = {
1496 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1497 .fmt.pix_mp = {
1498 .width = 640,
1499 .height = 480,
1500 .pixelformat = V4L2_PIX_FMT_YUYV,
1501 .field = V4L2_FIELD_NONE,
1502 .colorspace = V4L2_COLORSPACE_JPEG,
1503 },
1504 };
1505
1506 return fimc_capture_set_format(fimc, &fmt);
1507 }
1508
1509 /* fimc->lock must be already initialized */
1510 static int fimc_register_capture_device(struct fimc_dev *fimc,
1511 struct v4l2_device *v4l2_dev)
1512 {
1513 struct video_device *vfd;
1514 struct fimc_vid_cap *vid_cap;
1515 struct fimc_ctx *ctx;
1516 struct vb2_queue *q;
1517 int ret = -ENOMEM;
1518
1519 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
1520 if (!ctx)
1521 return -ENOMEM;
1522
1523 ctx->fimc_dev = fimc;
1524 ctx->in_path = FIMC_CAMERA;
1525 ctx->out_path = FIMC_DMA;
1526 ctx->state = FIMC_CTX_CAP;
1527 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1528 ctx->d_frame.fmt = ctx->s_frame.fmt;
1529
1530 vfd = video_device_alloc();
1531 if (!vfd) {
1532 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
1533 goto err_vd_alloc;
1534 }
1535
1536 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1537
1538 vfd->fops = &fimc_capture_fops;
1539 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1540 vfd->v4l2_dev = v4l2_dev;
1541 vfd->minor = -1;
1542 vfd->release = video_device_release;
1543 vfd->lock = &fimc->lock;
1544 /* Locking in file operations other than ioctl should be done
1545 by the driver, not the V4L2 core.
1546 This driver needs auditing so that this flag can be removed. */
1547 set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
1548 video_set_drvdata(vfd, fimc);
1549
1550 vid_cap = &fimc->vid_cap;
1551 vid_cap->vfd = vfd;
1552 vid_cap->active_buf_cnt = 0;
1553 vid_cap->reqbufs_count = 0;
1554 vid_cap->refcnt = 0;
1555
1556 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1557 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1558 vid_cap->ctx = ctx;
1559
1560 q = &fimc->vid_cap.vbq;
1561 memset(q, 0, sizeof(*q));
1562 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1563 q->io_modes = VB2_MMAP | VB2_USERPTR;
1564 q->drv_priv = fimc->vid_cap.ctx;
1565 q->ops = &fimc_capture_qops;
1566 q->mem_ops = &vb2_dma_contig_memops;
1567 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1568
1569 vb2_queue_init(q);
1570
1571 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1572 ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
1573 if (ret)
1574 goto err_ent;
1575
1576 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1577 if (ret)
1578 goto err_vd;
1579
1580 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1581 vfd->name, video_device_node_name(vfd));
1582
1583 vfd->ctrl_handler = &ctx->ctrl_handler;
1584 return 0;
1585
1586 err_vd:
1587 media_entity_cleanup(&vfd->entity);
1588 err_ent:
1589 video_device_release(vfd);
1590 err_vd_alloc:
1591 kfree(ctx);
1592 return ret;
1593 }
1594
1595 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1596 {
1597 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1598 int ret;
1599
1600 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1601 if (ret)
1602 return ret;
1603
1604 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1605 if (ret)
1606 fimc_unregister_m2m_device(fimc);
1607
1608 return ret;
1609 }
1610
1611 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1612 {
1613 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1614
1615 if (fimc == NULL)
1616 return;
1617
1618 fimc_unregister_m2m_device(fimc);
1619
1620 if (fimc->vid_cap.vfd) {
1621 media_entity_cleanup(&fimc->vid_cap.vfd->entity);
1622 video_unregister_device(fimc->vid_cap.vfd);
1623 fimc->vid_cap.vfd = NULL;
1624 }
1625
1626 kfree(fimc->vid_cap.ctx);
1627 fimc->vid_cap.ctx = NULL;
1628 }
1629
1630 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1631 .registered = fimc_capture_subdev_registered,
1632 .unregistered = fimc_capture_subdev_unregistered,
1633 };
1634
1635 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1636 {
1637 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1638 int ret;
1639
1640 v4l2_subdev_init(sd, &fimc_subdev_ops);
1641 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1642 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1643
1644 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1645 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1646 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1647 fimc->vid_cap.sd_pads, 0);
1648 if (ret)
1649 return ret;
1650
1651 sd->entity.ops = &fimc_sd_media_ops;
1652 sd->internal_ops = &fimc_capture_sd_internal_ops;
1653 v4l2_set_subdevdata(sd, fimc);
1654 return 0;
1655 }
1656
1657 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1658 {
1659 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1660
1661 v4l2_device_unregister_subdev(sd);
1662 media_entity_cleanup(&sd->entity);
1663 v4l2_set_subdevdata(sd, NULL);
1664 }
Linux kernel - Deliverables
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