1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
4 *
5 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
6 * Sylwester Nawrocki <s.nawrocki@samsung.com>
7 */
8
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/types.h>
12 #include <linux/errno.h>
13 #include <linux/bug.h>
14 #include <linux/interrupt.h>
15 #include <linux/device.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/list.h>
18 #include <linux/slab.h>
19
20 #include <linux/videodev2.h>
21 #include <media/v4l2-device.h>
22 #include <media/v4l2-ioctl.h>
23 #include <media/v4l2-mem2mem.h>
24 #include <media/v4l2-rect.h>
25 #include <media/videobuf2-v4l2.h>
26 #include <media/videobuf2-dma-contig.h>
27
28 #include "common.h"
29 #include "fimc-core.h"
30 #include "fimc-reg.h"
31 #include "media-dev.h"
32
fimc_capture_hw_init(struct fimc_dev * fimc)33 static int fimc_capture_hw_init(struct fimc_dev *fimc)
34 {
35 struct fimc_source_info *si = &fimc->vid_cap.source_config;
36 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
37 int ret;
38 unsigned long flags;
39
40 if (ctx == NULL || ctx->s_frame.fmt == NULL)
41 return -EINVAL;
42
43 if (si->fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK) {
44 ret = fimc_hw_camblk_cfg_writeback(fimc);
45 if (ret < 0)
46 return ret;
47 }
48
49 spin_lock_irqsave(&fimc->slock, flags);
50 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
51 fimc_set_yuv_order(ctx);
52
53 fimc_hw_set_camera_polarity(fimc, si);
54 fimc_hw_set_camera_type(fimc, si);
55 fimc_hw_set_camera_source(fimc, si);
56 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
57
58 ret = fimc_set_scaler_info(ctx);
59 if (!ret) {
60 fimc_hw_set_input_path(ctx);
61 fimc_hw_set_prescaler(ctx);
62 fimc_hw_set_mainscaler(ctx);
63 fimc_hw_set_target_format(ctx);
64 fimc_hw_set_rotation(ctx);
65 fimc_hw_set_effect(ctx);
66 fimc_hw_set_output_path(ctx);
67 fimc_hw_set_out_dma(ctx);
68 if (fimc->drv_data->alpha_color)
69 fimc_hw_set_rgb_alpha(ctx);
70 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
71 }
72 spin_unlock_irqrestore(&fimc->slock, flags);
73 return ret;
74 }
75
76 /*
77 * Reinitialize the driver so it is ready to start the streaming again.
78 * Set fimc->state to indicate stream off and the hardware shut down state.
79 * If not suspending (@suspend is false), return any buffers to videobuf2.
80 * Otherwise put any owned buffers onto the pending buffers queue, so they
81 * can be re-spun when the device is being resumed. Also perform FIMC
82 * software reset and disable streaming on the whole pipeline if required.
83 */
fimc_capture_state_cleanup(struct fimc_dev * fimc,bool suspend)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, VB2_BUF_STATE_ERROR);
105 }
106 /* If suspending put unused buffers onto pending queue */
107 while (!list_empty(&cap->active_buf_q)) {
108 buf = fimc_active_queue_pop(cap);
109 if (suspend)
110 fimc_pending_queue_add(cap, buf);
111 else
112 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
113 }
114
115 fimc_hw_reset(fimc);
116 cap->buf_index = 0;
117
118 spin_unlock_irqrestore(&fimc->slock, flags);
119
120 if (streaming)
121 return fimc_pipeline_call(&cap->ve, set_stream, 0);
122 else
123 return 0;
124 }
125
fimc_stop_capture(struct fimc_dev * fimc,bool suspend)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 * @ctx: FIMC capture context
148 *
149 * To be called from within the interrupt handler with fimc.slock
150 * spinlock held. It updates the camera pixel crop, rotation and
151 * image flip in H/W.
152 */
fimc_capture_config_update(struct fimc_ctx * ctx)153 static int fimc_capture_config_update(struct fimc_ctx *ctx)
154 {
155 struct fimc_dev *fimc = ctx->fimc_dev;
156 int ret;
157
158 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
159
160 ret = fimc_set_scaler_info(ctx);
161 if (ret)
162 return ret;
163
164 fimc_hw_set_prescaler(ctx);
165 fimc_hw_set_mainscaler(ctx);
166 fimc_hw_set_target_format(ctx);
167 fimc_hw_set_rotation(ctx);
168 fimc_hw_set_effect(ctx);
169 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
170 fimc_hw_set_out_dma(ctx);
171 if (fimc->drv_data->alpha_color)
172 fimc_hw_set_rgb_alpha(ctx);
173
174 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
175 return ret;
176 }
177
fimc_capture_irq_handler(struct fimc_dev * fimc,int deq_buf)178 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf)
179 {
180 struct fimc_vid_cap *cap = &fimc->vid_cap;
181 struct fimc_pipeline *p = to_fimc_pipeline(cap->ve.pipe);
182 struct v4l2_subdev *csis = p->subdevs[IDX_CSIS];
183 struct fimc_frame *f = &cap->ctx->d_frame;
184 struct fimc_vid_buffer *v_buf;
185
186 if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) {
187 wake_up(&fimc->irq_queue);
188 goto done;
189 }
190
191 if (!list_empty(&cap->active_buf_q) &&
192 test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) {
193 v_buf = fimc_active_queue_pop(cap);
194
195 v_buf->vb.vb2_buf.timestamp = ktime_get_ns();
196 v_buf->vb.sequence = cap->frame_count++;
197
198 vb2_buffer_done(&v_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
199 }
200
201 if (!list_empty(&cap->pending_buf_q)) {
202
203 v_buf = fimc_pending_queue_pop(cap);
204 fimc_hw_set_output_addr(fimc, &v_buf->addr, cap->buf_index);
205 v_buf->index = cap->buf_index;
206
207 /* Move the buffer to the capture active queue */
208 fimc_active_queue_add(cap, v_buf);
209
210 dbg("next frame: %d, done frame: %d",
211 fimc_hw_get_frame_index(fimc), v_buf->index);
212
213 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
214 cap->buf_index = 0;
215 }
216 /*
217 * Set up a buffer at MIPI-CSIS if current image format
218 * requires the frame embedded data capture.
219 */
220 if (f->fmt->mdataplanes && !list_empty(&cap->active_buf_q)) {
221 unsigned int plane = ffs(f->fmt->mdataplanes) - 1;
222 unsigned int size = f->payload[plane];
223 s32 index = fimc_hw_get_frame_index(fimc);
224 void *vaddr;
225
226 list_for_each_entry(v_buf, &cap->active_buf_q, list) {
227 if (v_buf->index != index)
228 continue;
229 vaddr = vb2_plane_vaddr(&v_buf->vb.vb2_buf, plane);
230 v4l2_subdev_call(csis, video, s_rx_buffer,
231 vaddr, &size);
232 break;
233 }
234 }
235
236 if (cap->active_buf_cnt == 0) {
237 if (deq_buf)
238 clear_bit(ST_CAPT_RUN, &fimc->state);
239
240 if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
241 cap->buf_index = 0;
242 } else {
243 set_bit(ST_CAPT_RUN, &fimc->state);
244 }
245
246 if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
247 fimc_capture_config_update(cap->ctx);
248 done:
249 if (cap->active_buf_cnt == 1) {
250 fimc_deactivate_capture(fimc);
251 clear_bit(ST_CAPT_STREAM, &fimc->state);
252 }
253
254 dbg("frame: %d, active_buf_cnt: %d",
255 fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
256 }
257
258
start_streaming(struct vb2_queue * q,unsigned int count)259 static int start_streaming(struct vb2_queue *q, unsigned int count)
260 {
261 struct fimc_ctx *ctx = q->drv_priv;
262 struct fimc_dev *fimc = ctx->fimc_dev;
263 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
264 int min_bufs;
265 int ret;
266
267 vid_cap->frame_count = 0;
268
269 ret = fimc_capture_hw_init(fimc);
270 if (ret) {
271 fimc_capture_state_cleanup(fimc, false);
272 return ret;
273 }
274
275 set_bit(ST_CAPT_PEND, &fimc->state);
276
277 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
278
279 if (vid_cap->active_buf_cnt >= min_bufs &&
280 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
281 fimc_activate_capture(ctx);
282
283 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
284 return fimc_pipeline_call(&vid_cap->ve, set_stream, 1);
285 }
286
287 return 0;
288 }
289
stop_streaming(struct vb2_queue * q)290 static void stop_streaming(struct vb2_queue *q)
291 {
292 struct fimc_ctx *ctx = q->drv_priv;
293 struct fimc_dev *fimc = ctx->fimc_dev;
294
295 if (!fimc_capture_active(fimc))
296 return;
297
298 fimc_stop_capture(fimc, false);
299 }
300
fimc_capture_suspend(struct fimc_dev * fimc)301 int fimc_capture_suspend(struct fimc_dev *fimc)
302 {
303 bool suspend = fimc_capture_busy(fimc);
304
305 int ret = fimc_stop_capture(fimc, suspend);
306 if (ret)
307 return ret;
308 return fimc_pipeline_call(&fimc->vid_cap.ve, close);
309 }
310
311 static void buffer_queue(struct vb2_buffer *vb);
312
fimc_capture_resume(struct fimc_dev * fimc)313 int fimc_capture_resume(struct fimc_dev *fimc)
314 {
315 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
316 struct exynos_video_entity *ve = &vid_cap->ve;
317 struct fimc_vid_buffer *buf;
318 int i;
319
320 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
321 return 0;
322
323 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
324 vid_cap->buf_index = 0;
325 fimc_pipeline_call(ve, open, &ve->vdev.entity, false);
326 fimc_capture_hw_init(fimc);
327
328 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
329
330 for (i = 0; i < vid_cap->reqbufs_count; i++) {
331 if (list_empty(&vid_cap->pending_buf_q))
332 break;
333 buf = fimc_pending_queue_pop(vid_cap);
334 buffer_queue(&buf->vb.vb2_buf);
335 }
336 return 0;
337
338 }
339
queue_setup(struct vb2_queue * vq,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])340 static int queue_setup(struct vb2_queue *vq,
341 unsigned int *num_buffers, unsigned int *num_planes,
342 unsigned int sizes[], struct device *alloc_devs[])
343 {
344 struct fimc_ctx *ctx = vq->drv_priv;
345 struct fimc_frame *frame = &ctx->d_frame;
346 struct fimc_fmt *fmt = frame->fmt;
347 unsigned long wh = frame->f_width * frame->f_height;
348 int i;
349
350 if (fmt == NULL)
351 return -EINVAL;
352
353 if (*num_planes) {
354 if (*num_planes != fmt->memplanes)
355 return -EINVAL;
356 for (i = 0; i < *num_planes; i++)
357 if (sizes[i] < (wh * fmt->depth[i]) / 8)
358 return -EINVAL;
359 return 0;
360 }
361
362 *num_planes = fmt->memplanes;
363
364 for (i = 0; i < fmt->memplanes; i++) {
365 unsigned int size = (wh * fmt->depth[i]) / 8;
366
367 if (fimc_fmt_is_user_defined(fmt->color))
368 sizes[i] = frame->payload[i];
369 else
370 sizes[i] = max_t(u32, size, frame->payload[i]);
371 }
372
373 return 0;
374 }
375
buffer_prepare(struct vb2_buffer * vb)376 static int buffer_prepare(struct vb2_buffer *vb)
377 {
378 struct vb2_queue *vq = vb->vb2_queue;
379 struct fimc_ctx *ctx = vq->drv_priv;
380 int i;
381
382 if (ctx->d_frame.fmt == NULL)
383 return -EINVAL;
384
385 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
386 unsigned long size = ctx->d_frame.payload[i];
387
388 if (vb2_plane_size(vb, i) < size) {
389 v4l2_err(&ctx->fimc_dev->vid_cap.ve.vdev,
390 "User buffer too small (%ld < %ld)\n",
391 vb2_plane_size(vb, i), size);
392 return -EINVAL;
393 }
394 vb2_set_plane_payload(vb, i, size);
395 }
396
397 return 0;
398 }
399
buffer_queue(struct vb2_buffer * vb)400 static void buffer_queue(struct vb2_buffer *vb)
401 {
402 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
403 struct fimc_vid_buffer *buf
404 = container_of(vbuf, struct fimc_vid_buffer, vb);
405 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
406 struct fimc_dev *fimc = ctx->fimc_dev;
407 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
408 struct exynos_video_entity *ve = &vid_cap->ve;
409 unsigned long flags;
410 int min_bufs;
411
412 spin_lock_irqsave(&fimc->slock, flags);
413 fimc_prepare_addr(ctx, &buf->vb.vb2_buf, &ctx->d_frame, &buf->addr);
414
415 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
416 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
417 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
418 /* Setup the buffer directly for processing. */
419 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
420 vid_cap->buf_index;
421
422 fimc_hw_set_output_addr(fimc, &buf->addr, buf_id);
423 buf->index = vid_cap->buf_index;
424 fimc_active_queue_add(vid_cap, buf);
425
426 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
427 vid_cap->buf_index = 0;
428 } else {
429 fimc_pending_queue_add(vid_cap, buf);
430 }
431
432 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
433
434
435 if (vb2_is_streaming(&vid_cap->vbq) &&
436 vid_cap->active_buf_cnt >= min_bufs &&
437 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
438 int ret;
439
440 fimc_activate_capture(ctx);
441 spin_unlock_irqrestore(&fimc->slock, flags);
442
443 if (test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
444 return;
445
446 ret = fimc_pipeline_call(ve, set_stream, 1);
447 if (ret < 0)
448 v4l2_err(&ve->vdev, "stream on failed: %d\n", ret);
449 return;
450 }
451 spin_unlock_irqrestore(&fimc->slock, flags);
452 }
453
454 static const struct vb2_ops fimc_capture_qops = {
455 .queue_setup = queue_setup,
456 .buf_prepare = buffer_prepare,
457 .buf_queue = buffer_queue,
458 .wait_prepare = vb2_ops_wait_prepare,
459 .wait_finish = vb2_ops_wait_finish,
460 .start_streaming = start_streaming,
461 .stop_streaming = stop_streaming,
462 };
463
464 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
465
fimc_capture_open(struct file * file)466 static int fimc_capture_open(struct file *file)
467 {
468 struct fimc_dev *fimc = video_drvdata(file);
469 struct fimc_vid_cap *vc = &fimc->vid_cap;
470 struct exynos_video_entity *ve = &vc->ve;
471 int ret = -EBUSY;
472
473 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
474
475 mutex_lock(&fimc->lock);
476
477 if (fimc_m2m_active(fimc))
478 goto unlock;
479
480 set_bit(ST_CAPT_BUSY, &fimc->state);
481 ret = pm_runtime_resume_and_get(&fimc->pdev->dev);
482 if (ret < 0)
483 goto unlock;
484
485 ret = v4l2_fh_open(file);
486 if (ret) {
487 pm_runtime_put_sync(&fimc->pdev->dev);
488 goto unlock;
489 }
490
491 if (v4l2_fh_is_singular_file(file)) {
492 fimc_md_graph_lock(ve);
493
494 ret = fimc_pipeline_call(ve, open, &ve->vdev.entity, true);
495
496 if (ret == 0)
497 ve->vdev.entity.use_count++;
498
499 fimc_md_graph_unlock(ve);
500
501 if (ret == 0)
502 ret = fimc_capture_set_default_format(fimc);
503
504 if (ret < 0) {
505 clear_bit(ST_CAPT_BUSY, &fimc->state);
506 pm_runtime_put_sync(&fimc->pdev->dev);
507 v4l2_fh_release(file);
508 }
509 }
510 unlock:
511 mutex_unlock(&fimc->lock);
512 return ret;
513 }
514
fimc_capture_release(struct file * file)515 static int fimc_capture_release(struct file *file)
516 {
517 struct fimc_dev *fimc = video_drvdata(file);
518 struct fimc_vid_cap *vc = &fimc->vid_cap;
519 bool close = v4l2_fh_is_singular_file(file);
520 int ret;
521
522 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
523
524 mutex_lock(&fimc->lock);
525
526 if (close && vc->streaming) {
527 video_device_pipeline_stop(&vc->ve.vdev);
528 vc->streaming = false;
529 }
530
531 ret = _vb2_fop_release(file, NULL);
532
533 if (close) {
534 clear_bit(ST_CAPT_BUSY, &fimc->state);
535 fimc_pipeline_call(&vc->ve, close);
536 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
537
538 fimc_md_graph_lock(&vc->ve);
539 vc->ve.vdev.entity.use_count--;
540 fimc_md_graph_unlock(&vc->ve);
541 }
542
543 pm_runtime_put_sync(&fimc->pdev->dev);
544 mutex_unlock(&fimc->lock);
545
546 return ret;
547 }
548
549 static const struct v4l2_file_operations fimc_capture_fops = {
550 .owner = THIS_MODULE,
551 .open = fimc_capture_open,
552 .release = fimc_capture_release,
553 .poll = vb2_fop_poll,
554 .unlocked_ioctl = video_ioctl2,
555 .mmap = vb2_fop_mmap,
556 };
557
558 /*
559 * Format and crop negotiation helpers
560 */
561
fimc_capture_try_format(struct fimc_ctx * ctx,u32 * width,u32 * height,u32 * code,u32 * fourcc,int pad)562 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
563 u32 *width, u32 *height,
564 u32 *code, u32 *fourcc, int pad)
565 {
566 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
567 struct fimc_dev *fimc = ctx->fimc_dev;
568 const struct fimc_variant *var = fimc->variant;
569 const struct fimc_pix_limit *pl = var->pix_limit;
570 struct fimc_frame *dst = &ctx->d_frame;
571 u32 depth, min_w, max_w, min_h, align_h = 3;
572 u32 mask = FMT_FLAGS_CAM;
573 struct fimc_fmt *ffmt;
574
575 /* Conversion from/to JPEG or User Defined format is not supported */
576 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
577 fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
578 *code = ctx->s_frame.fmt->mbus_code;
579
580 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad == FIMC_SD_PAD_SOURCE)
581 mask |= FMT_FLAGS_M2M;
582
583 if (pad == FIMC_SD_PAD_SINK_FIFO)
584 mask = FMT_FLAGS_WRITEBACK;
585
586 ffmt = fimc_find_format(fourcc, code, mask, 0);
587 if (WARN_ON(!ffmt))
588 return NULL;
589
590 if (code)
591 *code = ffmt->mbus_code;
592 if (fourcc)
593 *fourcc = ffmt->fourcc;
594
595 if (pad != FIMC_SD_PAD_SOURCE) {
596 max_w = fimc_fmt_is_user_defined(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_user_defined(ffmt->color) ?
603 3 : 1,
604 0);
605 return ffmt;
606 }
607 /* Can't scale or crop in transparent (JPEG) transfer mode */
608 if (fimc_fmt_is_user_defined(ffmt->color)) {
609 *width = ctx->s_frame.f_width;
610 *height = ctx->s_frame.f_height;
611 return ffmt;
612 }
613 /* Apply the scaler and the output DMA constraints */
614 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
615 if (ctx->state & FIMC_COMPOSE) {
616 min_w = dst->offs_h + dst->width;
617 min_h = dst->offs_v + dst->height;
618 } else {
619 min_w = var->min_out_pixsize;
620 min_h = var->min_out_pixsize;
621 }
622 if (var->min_vsize_align == 1 && !rotation)
623 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
624
625 depth = fimc_get_format_depth(ffmt);
626 v4l_bound_align_image(width, min_w, max_w,
627 ffs(var->min_out_pixsize) - 1,
628 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
629 align_h,
630 64/(ALIGN(depth, 8)));
631
632 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
633 pad, code ? *code : 0, *width, *height,
634 dst->f_width, dst->f_height);
635
636 return ffmt;
637 }
638
fimc_capture_try_selection(struct fimc_ctx * ctx,struct v4l2_rect * r,int target)639 static void fimc_capture_try_selection(struct fimc_ctx *ctx,
640 struct v4l2_rect *r,
641 int target)
642 {
643 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
644 struct fimc_dev *fimc = ctx->fimc_dev;
645 const struct fimc_variant *var = fimc->variant;
646 const struct fimc_pix_limit *pl = var->pix_limit;
647 struct fimc_frame *sink = &ctx->s_frame;
648 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
649 u32 align_sz = 0, align_h = 4;
650 u32 max_sc_h, max_sc_v;
651
652 /* In JPEG transparent transfer mode cropping is not supported */
653 if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
654 r->width = sink->f_width;
655 r->height = sink->f_height;
656 r->left = r->top = 0;
657 return;
658 }
659 if (target == V4L2_SEL_TGT_COMPOSE) {
660 u32 tmp_min_h = ffs(sink->width) - 3;
661 u32 tmp_min_v = ffs(sink->height) - 1;
662
663 if (ctx->rotation != 90 && ctx->rotation != 270)
664 align_h = 1;
665 max_sc_h = min(SCALER_MAX_HRATIO, 1 << tmp_min_h);
666 max_sc_v = min(SCALER_MAX_VRATIO, 1 << tmp_min_v);
667 min_sz = var->min_out_pixsize;
668 } else {
669 u32 depth = fimc_get_format_depth(sink->fmt);
670 align_sz = 64/ALIGN(depth, 8);
671 min_sz = var->min_inp_pixsize;
672 min_w = min_h = min_sz;
673 max_sc_h = max_sc_v = 1;
674 }
675 /*
676 * For the compose rectangle the following constraints must be met:
677 * - it must fit in the sink pad format rectangle (f_width/f_height);
678 * - maximum downscaling ratio is 64;
679 * - maximum crop size depends if the rotator is used or not;
680 * - the sink pad format width/height must be 4 multiple of the
681 * prescaler ratios determined by sink pad size and source pad crop,
682 * the prescaler ratio is returned by fimc_get_scaler_factor().
683 */
684 max_w = min_t(u32,
685 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
686 rotate ? sink->f_height : sink->f_width);
687 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
688
689 if (target == V4L2_SEL_TGT_COMPOSE) {
690 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
691 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
692 if (rotate) {
693 swap(max_sc_h, max_sc_v);
694 swap(min_w, min_h);
695 }
696 }
697 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
698 &r->height, min_h, max_h, align_h,
699 align_sz);
700 /* Adjust left/top if crop/compose rectangle is out of bounds */
701 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
702 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
703 r->left = round_down(r->left, var->hor_offs_align);
704
705 dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d",
706 target, r->left, r->top, r->width, r->height,
707 sink->f_width, sink->f_height);
708 }
709
710 /*
711 * The video node ioctl operations
712 */
fimc_cap_querycap(struct file * file,void * priv,struct v4l2_capability * cap)713 static int fimc_cap_querycap(struct file *file, void *priv,
714 struct v4l2_capability *cap)
715 {
716 struct fimc_dev *fimc = video_drvdata(file);
717
718 __fimc_vidioc_querycap(&fimc->pdev->dev, cap);
719 return 0;
720 }
721
fimc_cap_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)722 static int fimc_cap_enum_fmt(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 f->pixelformat = fmt->fourcc;
732 return 0;
733 }
734
fimc_pipeline_get_head(struct media_entity * me)735 static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
736 {
737 struct media_pad *pad = &me->pads[0];
738
739 while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
740 pad = media_pad_remote_pad_first(pad);
741 if (!pad)
742 break;
743 me = pad->entity;
744 pad = &me->pads[0];
745 }
746
747 return me;
748 }
749
750 /**
751 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
752 * elements
753 * @ctx: FIMC capture context
754 * @tfmt: media bus format to try/set on subdevs
755 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
756 * @set: true to set format on subdevs, false to try only
757 */
fimc_pipeline_try_format(struct fimc_ctx * ctx,struct v4l2_mbus_framefmt * tfmt,struct fimc_fmt ** fmt_id,bool set)758 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
759 struct v4l2_mbus_framefmt *tfmt,
760 struct fimc_fmt **fmt_id,
761 bool set)
762 {
763 struct fimc_dev *fimc = ctx->fimc_dev;
764 struct fimc_pipeline *p = to_fimc_pipeline(fimc->vid_cap.ve.pipe);
765 struct v4l2_subdev *sd = p->subdevs[IDX_SENSOR];
766 struct v4l2_subdev_format sfmt = {
767 .which = set ? V4L2_SUBDEV_FORMAT_ACTIVE
768 : V4L2_SUBDEV_FORMAT_TRY,
769 };
770 struct v4l2_mbus_framefmt *mf = &sfmt.format;
771 struct media_entity *me;
772 struct fimc_fmt *ffmt;
773 struct media_pad *pad;
774 int ret, i = 1;
775 u32 fcc;
776
777 if (WARN_ON(!sd || !tfmt))
778 return -EINVAL;
779
780 sfmt.format = *tfmt;
781
782 me = fimc_pipeline_get_head(&sd->entity);
783
784 while (1) {
785 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
786 FMT_FLAGS_CAM, i++);
787 if (ffmt == NULL) {
788 /*
789 * Notify user-space if common pixel code for
790 * host and sensor does not exist.
791 */
792 return -EINVAL;
793 }
794 mf->code = tfmt->code = ffmt->mbus_code;
795
796 /* set format on all pipeline subdevs */
797 while (me != &fimc->vid_cap.subdev.entity) {
798 sd = media_entity_to_v4l2_subdev(me);
799
800 sfmt.pad = 0;
801 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
802 if (ret)
803 return ret;
804
805 if (me->pads[0].flags & MEDIA_PAD_FL_SINK) {
806 sfmt.pad = me->num_pads - 1;
807 mf->code = tfmt->code;
808 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL,
809 &sfmt);
810 if (ret)
811 return ret;
812 }
813
814 pad = media_pad_remote_pad_first(&me->pads[sfmt.pad]);
815 if (!pad)
816 return -EINVAL;
817 me = pad->entity;
818 }
819
820 if (mf->code != tfmt->code)
821 continue;
822
823 fcc = ffmt->fourcc;
824 tfmt->width = mf->width;
825 tfmt->height = mf->height;
826 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
827 NULL, &fcc, FIMC_SD_PAD_SINK_CAM);
828 ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height,
829 NULL, &fcc, FIMC_SD_PAD_SOURCE);
830 if (ffmt && ffmt->mbus_code)
831 mf->code = ffmt->mbus_code;
832 if (mf->width != tfmt->width || mf->height != tfmt->height)
833 continue;
834 tfmt->code = mf->code;
835 break;
836 }
837
838 if (fmt_id && ffmt)
839 *fmt_id = ffmt;
840 *tfmt = *mf;
841
842 return 0;
843 }
844
845 /**
846 * fimc_get_sensor_frame_desc - query the sensor for media bus frame parameters
847 * @sensor: pointer to the sensor subdev
848 * @plane_fmt: provides plane sizes corresponding to the frame layout entries
849 * @num_planes: number of planes
850 * @try: true to set the frame parameters, false to query only
851 *
852 * This function is used by this driver only for compressed/blob data formats.
853 */
fimc_get_sensor_frame_desc(struct v4l2_subdev * sensor,struct v4l2_plane_pix_format * plane_fmt,unsigned int num_planes,bool try)854 static int fimc_get_sensor_frame_desc(struct v4l2_subdev *sensor,
855 struct v4l2_plane_pix_format *plane_fmt,
856 unsigned int num_planes, bool try)
857 {
858 struct v4l2_mbus_frame_desc fd = { };
859 int i, ret;
860 int pad;
861
862 for (i = 0; i < num_planes; i++)
863 fd.entry[i].length = plane_fmt[i].sizeimage;
864
865 pad = sensor->entity.num_pads - 1;
866 if (try)
867 ret = v4l2_subdev_call(sensor, pad, set_frame_desc, pad, &fd);
868 else
869 ret = v4l2_subdev_call(sensor, pad, get_frame_desc, pad, &fd);
870
871 if (ret < 0)
872 return ret;
873
874 if (num_planes != fd.num_entries)
875 return -EINVAL;
876
877 for (i = 0; i < num_planes; i++)
878 plane_fmt[i].sizeimage = fd.entry[i].length;
879
880 if (fd.entry[0].length > FIMC_MAX_JPEG_BUF_SIZE) {
881 v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n",
882 fd.entry[0].length);
883
884 return -EINVAL;
885 }
886
887 return 0;
888 }
889
fimc_cap_g_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)890 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
891 struct v4l2_format *f)
892 {
893 struct fimc_dev *fimc = video_drvdata(file);
894
895 __fimc_get_format(&fimc->vid_cap.ctx->d_frame, f);
896 return 0;
897 }
898
899 /*
900 * Try or set format on the fimc.X.capture video node and additionally
901 * on the whole pipeline if @try is false.
902 * Locking: the caller must _not_ hold the graph mutex.
903 */
__video_try_or_set_format(struct fimc_dev * fimc,struct v4l2_format * f,bool try,struct fimc_fmt ** inp_fmt,struct fimc_fmt ** out_fmt)904 static int __video_try_or_set_format(struct fimc_dev *fimc,
905 struct v4l2_format *f, bool try,
906 struct fimc_fmt **inp_fmt,
907 struct fimc_fmt **out_fmt)
908 {
909 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
910 struct fimc_vid_cap *vc = &fimc->vid_cap;
911 struct exynos_video_entity *ve = &vc->ve;
912 struct fimc_ctx *ctx = vc->ctx;
913 unsigned int width = 0, height = 0;
914 int ret = 0;
915
916 /* Pre-configure format at the camera input interface, for JPEG only */
917 if (fimc_jpeg_fourcc(pix->pixelformat)) {
918 fimc_capture_try_format(ctx, &pix->width, &pix->height,
919 NULL, &pix->pixelformat,
920 FIMC_SD_PAD_SINK_CAM);
921 if (try) {
922 width = pix->width;
923 height = pix->height;
924 } else {
925 ctx->s_frame.f_width = pix->width;
926 ctx->s_frame.f_height = pix->height;
927 }
928 }
929
930 /* Try the format at the scaler and the DMA output */
931 *out_fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
932 NULL, &pix->pixelformat,
933 FIMC_SD_PAD_SOURCE);
934 if (*out_fmt == NULL)
935 return -EINVAL;
936
937 /* Restore image width/height for JPEG (no resizing supported). */
938 if (try && fimc_jpeg_fourcc(pix->pixelformat)) {
939 pix->width = width;
940 pix->height = height;
941 }
942
943 /* Try to match format at the host and the sensor */
944 if (!vc->user_subdev_api) {
945 struct v4l2_mbus_framefmt mbus_fmt;
946 struct v4l2_mbus_framefmt *mf;
947
948 mf = try ? &mbus_fmt : &fimc->vid_cap.ci_fmt;
949
950 mf->code = (*out_fmt)->mbus_code;
951 mf->width = pix->width;
952 mf->height = pix->height;
953
954 fimc_md_graph_lock(ve);
955 ret = fimc_pipeline_try_format(ctx, mf, inp_fmt, try);
956 fimc_md_graph_unlock(ve);
957
958 if (ret < 0)
959 return ret;
960
961 pix->width = mf->width;
962 pix->height = mf->height;
963 }
964
965 fimc_adjust_mplane_format(*out_fmt, pix->width, pix->height, pix);
966
967 if ((*out_fmt)->flags & FMT_FLAGS_COMPRESSED) {
968 struct v4l2_subdev *sensor;
969
970 fimc_md_graph_lock(ve);
971
972 sensor = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
973 if (sensor)
974 fimc_get_sensor_frame_desc(sensor, pix->plane_fmt,
975 (*out_fmt)->memplanes, try);
976 else
977 ret = -EPIPE;
978
979 fimc_md_graph_unlock(ve);
980 }
981
982 return ret;
983 }
984
fimc_cap_try_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)985 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
986 struct v4l2_format *f)
987 {
988 struct fimc_dev *fimc = video_drvdata(file);
989 struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
990
991 return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
992 }
993
fimc_capture_mark_jpeg_xfer(struct fimc_ctx * ctx,enum fimc_color_fmt color)994 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
995 enum fimc_color_fmt color)
996 {
997 bool jpeg = fimc_fmt_is_user_defined(color);
998
999 ctx->scaler.enabled = !jpeg;
1000 fimc_ctrls_activate(ctx, !jpeg);
1001
1002 if (jpeg)
1003 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1004 else
1005 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
1006 }
1007
__fimc_capture_set_format(struct fimc_dev * fimc,struct v4l2_format * f)1008 static int __fimc_capture_set_format(struct fimc_dev *fimc,
1009 struct v4l2_format *f)
1010 {
1011 struct fimc_vid_cap *vc = &fimc->vid_cap;
1012 struct fimc_ctx *ctx = vc->ctx;
1013 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1014 struct fimc_frame *ff = &ctx->d_frame;
1015 struct fimc_fmt *inp_fmt = NULL;
1016 int ret, i;
1017
1018 if (vb2_is_busy(&fimc->vid_cap.vbq))
1019 return -EBUSY;
1020
1021 ret = __video_try_or_set_format(fimc, f, false, &inp_fmt, &ff->fmt);
1022 if (ret < 0)
1023 return ret;
1024
1025 /* Update RGB Alpha control state and value range */
1026 fimc_alpha_ctrl_update(ctx);
1027
1028 for (i = 0; i < ff->fmt->memplanes; i++) {
1029 ff->bytesperline[i] = pix->plane_fmt[i].bytesperline;
1030 ff->payload[i] = pix->plane_fmt[i].sizeimage;
1031 }
1032
1033 set_frame_bounds(ff, pix->width, pix->height);
1034 /* Reset the composition rectangle if not yet configured */
1035 if (!(ctx->state & FIMC_COMPOSE))
1036 set_frame_crop(ff, 0, 0, pix->width, pix->height);
1037
1038 fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
1039
1040 /* Reset cropping and set format at the camera interface input */
1041 if (!vc->user_subdev_api) {
1042 ctx->s_frame.fmt = inp_fmt;
1043 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
1044 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
1045 }
1046
1047 return ret;
1048 }
1049
fimc_cap_s_fmt_mplane(struct file * file,void * priv,struct v4l2_format * f)1050 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
1051 struct v4l2_format *f)
1052 {
1053 struct fimc_dev *fimc = video_drvdata(file);
1054
1055 return __fimc_capture_set_format(fimc, f);
1056 }
1057
fimc_cap_enum_input(struct file * file,void * priv,struct v4l2_input * i)1058 static int fimc_cap_enum_input(struct file *file, void *priv,
1059 struct v4l2_input *i)
1060 {
1061 struct fimc_dev *fimc = video_drvdata(file);
1062 struct exynos_video_entity *ve = &fimc->vid_cap.ve;
1063 struct v4l2_subdev *sd;
1064
1065 if (i->index != 0)
1066 return -EINVAL;
1067
1068 i->type = V4L2_INPUT_TYPE_CAMERA;
1069 fimc_md_graph_lock(ve);
1070 sd = __fimc_md_get_subdev(ve->pipe, IDX_SENSOR);
1071 fimc_md_graph_unlock(ve);
1072
1073 if (sd)
1074 strscpy(i->name, sd->name, sizeof(i->name));
1075
1076 return 0;
1077 }
1078
fimc_cap_s_input(struct file * file,void * priv,unsigned int i)1079 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
1080 {
1081 return i == 0 ? i : -EINVAL;
1082 }
1083
fimc_cap_g_input(struct file * file,void * priv,unsigned int * i)1084 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
1085 {
1086 *i = 0;
1087 return 0;
1088 }
1089
1090 /**
1091 * fimc_pipeline_validate - check for formats inconsistencies
1092 * between source and sink pad of each link
1093 * @fimc: the FIMC device this context applies to
1094 *
1095 * Return 0 if all formats match or -EPIPE otherwise.
1096 */
fimc_pipeline_validate(struct fimc_dev * fimc)1097 static int fimc_pipeline_validate(struct fimc_dev *fimc)
1098 {
1099 struct v4l2_subdev_format sink_fmt = {
1100 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1101 };
1102 struct v4l2_subdev_format src_fmt = {
1103 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1104 };
1105 struct fimc_vid_cap *vc = &fimc->vid_cap;
1106 struct v4l2_subdev *sd = &vc->subdev;
1107 struct fimc_pipeline *p = to_fimc_pipeline(vc->ve.pipe);
1108 struct media_pad *sink_pad, *src_pad;
1109 int i, ret;
1110
1111 while (1) {
1112 /*
1113 * Find current entity sink pad and any remote sink pad linked
1114 * to it. We stop if there is no sink pad in current entity or
1115 * it is not linked to any other remote entity.
1116 */
1117 src_pad = NULL;
1118
1119 for (i = 0; i < sd->entity.num_pads; i++) {
1120 struct media_pad *p = &sd->entity.pads[i];
1121
1122 if (p->flags & MEDIA_PAD_FL_SINK) {
1123 sink_pad = p;
1124 src_pad = media_pad_remote_pad_first(sink_pad);
1125 if (src_pad)
1126 break;
1127 }
1128 }
1129
1130 if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
1131 break;
1132
1133 /* Don't call FIMC subdev operation to avoid nested locking */
1134 if (sd == &vc->subdev) {
1135 struct fimc_frame *ff = &vc->ctx->s_frame;
1136 sink_fmt.format.width = ff->f_width;
1137 sink_fmt.format.height = ff->f_height;
1138 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
1139 } else {
1140 sink_fmt.pad = sink_pad->index;
1141 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
1142 if (ret < 0 && ret != -ENOIOCTLCMD)
1143 return -EPIPE;
1144 }
1145
1146 /* Retrieve format at the source pad */
1147 sd = media_entity_to_v4l2_subdev(src_pad->entity);
1148 src_fmt.pad = src_pad->index;
1149 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
1150 if (ret < 0 && ret != -ENOIOCTLCMD)
1151 return -EPIPE;
1152
1153 if (src_fmt.format.width != sink_fmt.format.width ||
1154 src_fmt.format.height != sink_fmt.format.height ||
1155 src_fmt.format.code != sink_fmt.format.code)
1156 return -EPIPE;
1157
1158 if (sd == p->subdevs[IDX_SENSOR] &&
1159 fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
1160 struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
1161 struct fimc_frame *frame = &vc->ctx->d_frame;
1162 unsigned int i;
1163
1164 ret = fimc_get_sensor_frame_desc(sd, plane_fmt,
1165 frame->fmt->memplanes,
1166 false);
1167 if (ret < 0)
1168 return -EPIPE;
1169
1170 for (i = 0; i < frame->fmt->memplanes; i++)
1171 if (frame->payload[i] < plane_fmt[i].sizeimage)
1172 return -EPIPE;
1173 }
1174 }
1175 return 0;
1176 }
1177
fimc_cap_streamon(struct file * file,void * priv,enum v4l2_buf_type type)1178 static int fimc_cap_streamon(struct file *file, void *priv,
1179 enum v4l2_buf_type type)
1180 {
1181 struct fimc_dev *fimc = video_drvdata(file);
1182 struct fimc_vid_cap *vc = &fimc->vid_cap;
1183 struct fimc_source_info *si = NULL;
1184 struct v4l2_subdev *sd;
1185 int ret;
1186
1187 if (fimc_capture_active(fimc))
1188 return -EBUSY;
1189
1190 ret = video_device_pipeline_start(&vc->ve.vdev, &vc->ve.pipe->mp);
1191 if (ret < 0)
1192 return ret;
1193
1194 sd = __fimc_md_get_subdev(vc->ve.pipe, IDX_SENSOR);
1195 if (sd)
1196 si = v4l2_get_subdev_hostdata(sd);
1197
1198 if (si == NULL) {
1199 ret = -EPIPE;
1200 goto err_p_stop;
1201 }
1202 /*
1203 * Save configuration data related to currently attached image
1204 * sensor or other data source, e.g. FIMC-IS.
1205 */
1206 vc->source_config = *si;
1207
1208 if (vc->input == GRP_ID_FIMC_IS)
1209 vc->source_config.fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
1210
1211 if (vc->user_subdev_api) {
1212 ret = fimc_pipeline_validate(fimc);
1213 if (ret < 0)
1214 goto err_p_stop;
1215 }
1216
1217 ret = vb2_ioctl_streamon(file, priv, type);
1218 if (!ret) {
1219 vc->streaming = true;
1220 return ret;
1221 }
1222
1223 err_p_stop:
1224 video_device_pipeline_stop(&vc->ve.vdev);
1225 return ret;
1226 }
1227
fimc_cap_streamoff(struct file * file,void * priv,enum v4l2_buf_type type)1228 static int fimc_cap_streamoff(struct file *file, void *priv,
1229 enum v4l2_buf_type type)
1230 {
1231 struct fimc_dev *fimc = video_drvdata(file);
1232 struct fimc_vid_cap *vc = &fimc->vid_cap;
1233 int ret;
1234
1235 ret = vb2_ioctl_streamoff(file, priv, type);
1236 if (ret < 0)
1237 return ret;
1238
1239 if (vc->streaming) {
1240 video_device_pipeline_stop(&vc->ve.vdev);
1241 vc->streaming = false;
1242 }
1243
1244 return 0;
1245 }
1246
fimc_cap_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * reqbufs)1247 static int fimc_cap_reqbufs(struct file *file, void *priv,
1248 struct v4l2_requestbuffers *reqbufs)
1249 {
1250 struct fimc_dev *fimc = video_drvdata(file);
1251 int ret;
1252
1253 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
1254
1255 if (!ret)
1256 fimc->vid_cap.reqbufs_count = reqbufs->count;
1257
1258 return ret;
1259 }
1260
fimc_cap_g_selection(struct file * file,void * fh,struct v4l2_selection * s)1261 static int fimc_cap_g_selection(struct file *file, void *fh,
1262 struct v4l2_selection *s)
1263 {
1264 struct fimc_dev *fimc = video_drvdata(file);
1265 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1266 struct fimc_frame *f = &ctx->s_frame;
1267
1268 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1269 return -EINVAL;
1270
1271 switch (s->target) {
1272 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1273 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1274 f = &ctx->d_frame;
1275 fallthrough;
1276 case V4L2_SEL_TGT_CROP_BOUNDS:
1277 case V4L2_SEL_TGT_CROP_DEFAULT:
1278 s->r.left = 0;
1279 s->r.top = 0;
1280 s->r.width = f->o_width;
1281 s->r.height = f->o_height;
1282 return 0;
1283
1284 case V4L2_SEL_TGT_COMPOSE:
1285 f = &ctx->d_frame;
1286 fallthrough;
1287 case V4L2_SEL_TGT_CROP:
1288 s->r.left = f->offs_h;
1289 s->r.top = f->offs_v;
1290 s->r.width = f->width;
1291 s->r.height = f->height;
1292 return 0;
1293 }
1294
1295 return -EINVAL;
1296 }
1297
fimc_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)1298 static int fimc_cap_s_selection(struct file *file, void *fh,
1299 struct v4l2_selection *s)
1300 {
1301 struct fimc_dev *fimc = video_drvdata(file);
1302 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1303 struct v4l2_rect rect = s->r;
1304 struct fimc_frame *f;
1305 unsigned long flags;
1306
1307 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1308 return -EINVAL;
1309
1310 if (s->target == V4L2_SEL_TGT_COMPOSE)
1311 f = &ctx->d_frame;
1312 else if (s->target == V4L2_SEL_TGT_CROP)
1313 f = &ctx->s_frame;
1314 else
1315 return -EINVAL;
1316
1317 fimc_capture_try_selection(ctx, &rect, s->target);
1318
1319 if (s->flags & V4L2_SEL_FLAG_LE &&
1320 !v4l2_rect_enclosed(&rect, &s->r))
1321 return -ERANGE;
1322
1323 if (s->flags & V4L2_SEL_FLAG_GE &&
1324 !v4l2_rect_enclosed(&s->r, &rect))
1325 return -ERANGE;
1326
1327 s->r = rect;
1328 spin_lock_irqsave(&fimc->slock, flags);
1329 set_frame_crop(f, s->r.left, s->r.top, s->r.width,
1330 s->r.height);
1331 spin_unlock_irqrestore(&fimc->slock, flags);
1332
1333 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1334 return 0;
1335 }
1336
1337 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1338 .vidioc_querycap = fimc_cap_querycap,
1339
1340 .vidioc_enum_fmt_vid_cap = fimc_cap_enum_fmt,
1341 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1342 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1343 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1344
1345 .vidioc_reqbufs = fimc_cap_reqbufs,
1346 .vidioc_querybuf = vb2_ioctl_querybuf,
1347 .vidioc_qbuf = vb2_ioctl_qbuf,
1348 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1349 .vidioc_expbuf = vb2_ioctl_expbuf,
1350 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1351 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1352
1353 .vidioc_streamon = fimc_cap_streamon,
1354 .vidioc_streamoff = fimc_cap_streamoff,
1355
1356 .vidioc_g_selection = fimc_cap_g_selection,
1357 .vidioc_s_selection = fimc_cap_s_selection,
1358
1359 .vidioc_enum_input = fimc_cap_enum_input,
1360 .vidioc_s_input = fimc_cap_s_input,
1361 .vidioc_g_input = fimc_cap_g_input,
1362 };
1363
1364 /* Capture subdev media entity operations */
fimc_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)1365 static int fimc_link_setup(struct media_entity *entity,
1366 const struct media_pad *local,
1367 const struct media_pad *remote, u32 flags)
1368 {
1369 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1370 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1371 struct fimc_vid_cap *vc = &fimc->vid_cap;
1372 struct v4l2_subdev *sensor;
1373
1374 if (!is_media_entity_v4l2_subdev(remote->entity))
1375 return -EINVAL;
1376
1377 if (WARN_ON(fimc == NULL))
1378 return 0;
1379
1380 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1381 local->entity->name, remote->entity->name, flags,
1382 fimc->vid_cap.input);
1383
1384 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
1385 fimc->vid_cap.input = 0;
1386 return 0;
1387 }
1388
1389 if (vc->input != 0)
1390 return -EBUSY;
1391
1392 vc->input = sd->grp_id;
1393
1394 if (vc->user_subdev_api)
1395 return 0;
1396
1397 /* Inherit V4L2 controls from the image sensor subdev. */
1398 sensor = fimc_find_remote_sensor(&vc->subdev.entity);
1399 if (sensor == NULL)
1400 return 0;
1401
1402 return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
1403 sensor->ctrl_handler, NULL, true);
1404 }
1405
1406 static const struct media_entity_operations fimc_sd_media_ops = {
1407 .link_setup = fimc_link_setup,
1408 };
1409
1410 /**
1411 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1412 * @sd: pointer to a subdev generating the notification
1413 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1414 * @arg: pointer to an u32 type integer that stores the frame payload value
1415 *
1416 * The End Of Frame notification sent by sensor subdev in its still capture
1417 * mode. If there is only a single VSYNC generated by the sensor at the
1418 * beginning of a frame transmission, FIMC does not issue the LastIrq
1419 * (end of frame) interrupt. And this notification is used to complete the
1420 * frame capture and returning a buffer to user-space. Subdev drivers should
1421 * call this notification from their last 'End of frame capture' interrupt.
1422 */
fimc_sensor_notify(struct v4l2_subdev * sd,unsigned int notification,void * arg)1423 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1424 void *arg)
1425 {
1426 struct fimc_source_info *si;
1427 struct fimc_vid_buffer *buf;
1428 struct fimc_md *fmd;
1429 struct fimc_dev *fimc;
1430 unsigned long flags;
1431
1432 if (sd == NULL)
1433 return;
1434
1435 si = v4l2_get_subdev_hostdata(sd);
1436 fmd = entity_to_fimc_mdev(&sd->entity);
1437
1438 spin_lock_irqsave(&fmd->slock, flags);
1439
1440 fimc = si ? source_to_sensor_info(si)->host : NULL;
1441
1442 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1443 test_bit(ST_CAPT_PEND, &fimc->state)) {
1444 unsigned long irq_flags;
1445 spin_lock_irqsave(&fimc->slock, irq_flags);
1446 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1447 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1448 struct fimc_vid_buffer, list);
1449 vb2_set_plane_payload(&buf->vb.vb2_buf, 0,
1450 *((u32 *)arg));
1451 }
1452 fimc_capture_irq_handler(fimc, 1);
1453 fimc_deactivate_capture(fimc);
1454 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1455 }
1456 spin_unlock_irqrestore(&fmd->slock, flags);
1457 }
1458
fimc_subdev_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)1459 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1460 struct v4l2_subdev_state *sd_state,
1461 struct v4l2_subdev_mbus_code_enum *code)
1462 {
1463 struct fimc_fmt *fmt;
1464
1465 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1466 if (!fmt)
1467 return -EINVAL;
1468 code->code = fmt->mbus_code;
1469 return 0;
1470 }
1471
fimc_subdev_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1472 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1473 struct v4l2_subdev_state *sd_state,
1474 struct v4l2_subdev_format *fmt)
1475 {
1476 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1477 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1478 struct fimc_frame *ff = &ctx->s_frame;
1479 struct v4l2_mbus_framefmt *mf;
1480
1481 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1482 mf = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
1483 fmt->format = *mf;
1484 return 0;
1485 }
1486
1487 mf = &fmt->format;
1488 mutex_lock(&fimc->lock);
1489
1490 switch (fmt->pad) {
1491 case FIMC_SD_PAD_SOURCE:
1492 if (!WARN_ON(ff->fmt == NULL))
1493 mf->code = ff->fmt->mbus_code;
1494 /* Sink pads crop rectangle size */
1495 mf->width = ff->width;
1496 mf->height = ff->height;
1497 break;
1498 case FIMC_SD_PAD_SINK_FIFO:
1499 *mf = fimc->vid_cap.wb_fmt;
1500 break;
1501 case FIMC_SD_PAD_SINK_CAM:
1502 default:
1503 *mf = fimc->vid_cap.ci_fmt;
1504 break;
1505 }
1506
1507 mutex_unlock(&fimc->lock);
1508 mf->colorspace = V4L2_COLORSPACE_JPEG;
1509
1510 return 0;
1511 }
1512
fimc_subdev_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1513 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1514 struct v4l2_subdev_state *sd_state,
1515 struct v4l2_subdev_format *fmt)
1516 {
1517 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1518 struct v4l2_mbus_framefmt *mf = &fmt->format;
1519 struct fimc_vid_cap *vc = &fimc->vid_cap;
1520 struct fimc_ctx *ctx = vc->ctx;
1521 struct fimc_frame *ff;
1522 struct fimc_fmt *ffmt;
1523
1524 dbg("pad%d: code: 0x%x, %dx%d",
1525 fmt->pad, mf->code, mf->width, mf->height);
1526
1527 if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&vc->vbq))
1528 return -EBUSY;
1529
1530 mutex_lock(&fimc->lock);
1531 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1532 &mf->code, NULL, fmt->pad);
1533 mutex_unlock(&fimc->lock);
1534 mf->colorspace = V4L2_COLORSPACE_JPEG;
1535
1536 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1537 mf = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
1538 *mf = fmt->format;
1539 return 0;
1540 }
1541 /* There must be a bug in the driver if this happens */
1542 if (WARN_ON(ffmt == NULL))
1543 return -EINVAL;
1544
1545 /* Update RGB Alpha control state and value range */
1546 fimc_alpha_ctrl_update(ctx);
1547
1548 fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
1549 if (fmt->pad == FIMC_SD_PAD_SOURCE) {
1550 ff = &ctx->d_frame;
1551 /* Sink pads crop rectangle size */
1552 mf->width = ctx->s_frame.width;
1553 mf->height = ctx->s_frame.height;
1554 } else {
1555 ff = &ctx->s_frame;
1556 }
1557
1558 mutex_lock(&fimc->lock);
1559 set_frame_bounds(ff, mf->width, mf->height);
1560
1561 if (fmt->pad == FIMC_SD_PAD_SINK_FIFO)
1562 vc->wb_fmt = *mf;
1563 else if (fmt->pad == FIMC_SD_PAD_SINK_CAM)
1564 vc->ci_fmt = *mf;
1565
1566 ff->fmt = ffmt;
1567
1568 /* Reset the crop rectangle if required. */
1569 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE)))
1570 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1571
1572 if (fmt->pad != FIMC_SD_PAD_SOURCE)
1573 ctx->state &= ~FIMC_COMPOSE;
1574
1575 mutex_unlock(&fimc->lock);
1576 return 0;
1577 }
1578
fimc_subdev_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1579 static int fimc_subdev_get_selection(struct v4l2_subdev *sd,
1580 struct v4l2_subdev_state *sd_state,
1581 struct v4l2_subdev_selection *sel)
1582 {
1583 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1584 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1585 struct fimc_frame *f = &ctx->s_frame;
1586 struct v4l2_rect *r = &sel->r;
1587 struct v4l2_rect *try_sel;
1588
1589 if (sel->pad == FIMC_SD_PAD_SOURCE)
1590 return -EINVAL;
1591
1592 mutex_lock(&fimc->lock);
1593
1594 switch (sel->target) {
1595 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1596 f = &ctx->d_frame;
1597 fallthrough;
1598 case V4L2_SEL_TGT_CROP_BOUNDS:
1599 r->width = f->o_width;
1600 r->height = f->o_height;
1601 r->left = 0;
1602 r->top = 0;
1603 mutex_unlock(&fimc->lock);
1604 return 0;
1605
1606 case V4L2_SEL_TGT_CROP:
1607 try_sel = v4l2_subdev_get_try_crop(sd, sd_state, sel->pad);
1608 break;
1609 case V4L2_SEL_TGT_COMPOSE:
1610 try_sel = v4l2_subdev_get_try_compose(sd, sd_state, sel->pad);
1611 f = &ctx->d_frame;
1612 break;
1613 default:
1614 mutex_unlock(&fimc->lock);
1615 return -EINVAL;
1616 }
1617
1618 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1619 sel->r = *try_sel;
1620 } else {
1621 r->left = f->offs_h;
1622 r->top = f->offs_v;
1623 r->width = f->width;
1624 r->height = f->height;
1625 }
1626
1627 dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1628 sel->pad, r->left, r->top, r->width, r->height,
1629 f->f_width, f->f_height);
1630
1631 mutex_unlock(&fimc->lock);
1632 return 0;
1633 }
1634
fimc_subdev_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1635 static int fimc_subdev_set_selection(struct v4l2_subdev *sd,
1636 struct v4l2_subdev_state *sd_state,
1637 struct v4l2_subdev_selection *sel)
1638 {
1639 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1640 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1641 struct fimc_frame *f = &ctx->s_frame;
1642 struct v4l2_rect *r = &sel->r;
1643 struct v4l2_rect *try_sel;
1644 unsigned long flags;
1645
1646 if (sel->pad == FIMC_SD_PAD_SOURCE)
1647 return -EINVAL;
1648
1649 mutex_lock(&fimc->lock);
1650 fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP);
1651
1652 switch (sel->target) {
1653 case V4L2_SEL_TGT_CROP:
1654 try_sel = v4l2_subdev_get_try_crop(sd, sd_state, sel->pad);
1655 break;
1656 case V4L2_SEL_TGT_COMPOSE:
1657 try_sel = v4l2_subdev_get_try_compose(sd, sd_state, sel->pad);
1658 f = &ctx->d_frame;
1659 break;
1660 default:
1661 mutex_unlock(&fimc->lock);
1662 return -EINVAL;
1663 }
1664
1665 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1666 *try_sel = sel->r;
1667 } else {
1668 spin_lock_irqsave(&fimc->slock, flags);
1669 set_frame_crop(f, r->left, r->top, r->width, r->height);
1670 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1671 if (sel->target == V4L2_SEL_TGT_COMPOSE)
1672 ctx->state |= FIMC_COMPOSE;
1673 spin_unlock_irqrestore(&fimc->slock, flags);
1674 }
1675
1676 dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top,
1677 r->width, r->height);
1678
1679 mutex_unlock(&fimc->lock);
1680 return 0;
1681 }
1682
1683 static const struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1684 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1685 .get_selection = fimc_subdev_get_selection,
1686 .set_selection = fimc_subdev_set_selection,
1687 .get_fmt = fimc_subdev_get_fmt,
1688 .set_fmt = fimc_subdev_set_fmt,
1689 };
1690
1691 static const struct v4l2_subdev_ops fimc_subdev_ops = {
1692 .pad = &fimc_subdev_pad_ops,
1693 };
1694
1695 /* Set default format at the sensor and host interface */
fimc_capture_set_default_format(struct fimc_dev * fimc)1696 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1697 {
1698 struct v4l2_format fmt = {
1699 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1700 .fmt.pix_mp = {
1701 .width = FIMC_DEFAULT_WIDTH,
1702 .height = FIMC_DEFAULT_HEIGHT,
1703 .pixelformat = V4L2_PIX_FMT_YUYV,
1704 .field = V4L2_FIELD_NONE,
1705 .colorspace = V4L2_COLORSPACE_JPEG,
1706 },
1707 };
1708
1709 return __fimc_capture_set_format(fimc, &fmt);
1710 }
1711
1712 /* fimc->lock must be already initialized */
fimc_register_capture_device(struct fimc_dev * fimc,struct v4l2_device * v4l2_dev)1713 static int fimc_register_capture_device(struct fimc_dev *fimc,
1714 struct v4l2_device *v4l2_dev)
1715 {
1716 struct video_device *vfd = &fimc->vid_cap.ve.vdev;
1717 struct vb2_queue *q = &fimc->vid_cap.vbq;
1718 struct fimc_ctx *ctx;
1719 struct fimc_vid_cap *vid_cap;
1720 struct fimc_fmt *fmt;
1721 int ret = -ENOMEM;
1722
1723 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1724 if (!ctx)
1725 return -ENOMEM;
1726
1727 ctx->fimc_dev = fimc;
1728 ctx->in_path = FIMC_IO_CAMERA;
1729 ctx->out_path = FIMC_IO_DMA;
1730 ctx->state = FIMC_CTX_CAP;
1731 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1732 ctx->d_frame.fmt = ctx->s_frame.fmt;
1733
1734 memset(vfd, 0, sizeof(*vfd));
1735 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
1736
1737 vfd->fops = &fimc_capture_fops;
1738 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1739 vfd->v4l2_dev = v4l2_dev;
1740 vfd->minor = -1;
1741 vfd->release = video_device_release_empty;
1742 vfd->queue = q;
1743 vfd->lock = &fimc->lock;
1744 vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
1745
1746 video_set_drvdata(vfd, fimc);
1747 vid_cap = &fimc->vid_cap;
1748 vid_cap->active_buf_cnt = 0;
1749 vid_cap->reqbufs_count = 0;
1750 vid_cap->ctx = ctx;
1751
1752 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1753 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1754
1755 memset(q, 0, sizeof(*q));
1756 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1757 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1758 q->drv_priv = ctx;
1759 q->ops = &fimc_capture_qops;
1760 q->mem_ops = &vb2_dma_contig_memops;
1761 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1762 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1763 q->lock = &fimc->lock;
1764 q->dev = &fimc->pdev->dev;
1765
1766 ret = vb2_queue_init(q);
1767 if (ret)
1768 goto err_free_ctx;
1769
1770 /* Default format configuration */
1771 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1772 vid_cap->ci_fmt.width = FIMC_DEFAULT_WIDTH;
1773 vid_cap->ci_fmt.height = FIMC_DEFAULT_HEIGHT;
1774 vid_cap->ci_fmt.code = fmt->mbus_code;
1775
1776 ctx->s_frame.width = FIMC_DEFAULT_WIDTH;
1777 ctx->s_frame.height = FIMC_DEFAULT_HEIGHT;
1778 ctx->s_frame.fmt = fmt;
1779
1780 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_WRITEBACK, 0);
1781 vid_cap->wb_fmt = vid_cap->ci_fmt;
1782 vid_cap->wb_fmt.code = fmt->mbus_code;
1783
1784 vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
1785 vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1786 ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
1787 if (ret)
1788 goto err_free_ctx;
1789
1790 ret = fimc_ctrls_create(ctx);
1791 if (ret)
1792 goto err_me_cleanup;
1793
1794 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1795 if (ret)
1796 goto err_ctrl_free;
1797
1798 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
1799 vfd->name, video_device_node_name(vfd));
1800
1801 vfd->ctrl_handler = &ctx->ctrls.handler;
1802 return 0;
1803
1804 err_ctrl_free:
1805 fimc_ctrls_delete(ctx);
1806 err_me_cleanup:
1807 media_entity_cleanup(&vfd->entity);
1808 err_free_ctx:
1809 kfree(ctx);
1810 return ret;
1811 }
1812
fimc_capture_subdev_registered(struct v4l2_subdev * sd)1813 static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
1814 {
1815 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1816 int ret;
1817
1818 if (fimc == NULL)
1819 return -ENXIO;
1820
1821 ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
1822 if (ret)
1823 return ret;
1824
1825 fimc->vid_cap.ve.pipe = v4l2_get_subdev_hostdata(sd);
1826
1827 ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
1828 if (ret) {
1829 fimc_unregister_m2m_device(fimc);
1830 fimc->vid_cap.ve.pipe = NULL;
1831 }
1832
1833 return ret;
1834 }
1835
fimc_capture_subdev_unregistered(struct v4l2_subdev * sd)1836 static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
1837 {
1838 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1839 struct video_device *vdev;
1840
1841 if (fimc == NULL)
1842 return;
1843
1844 mutex_lock(&fimc->lock);
1845
1846 fimc_unregister_m2m_device(fimc);
1847 vdev = &fimc->vid_cap.ve.vdev;
1848
1849 if (video_is_registered(vdev)) {
1850 video_unregister_device(vdev);
1851 media_entity_cleanup(&vdev->entity);
1852 fimc_ctrls_delete(fimc->vid_cap.ctx);
1853 fimc->vid_cap.ve.pipe = NULL;
1854 }
1855 kfree(fimc->vid_cap.ctx);
1856 fimc->vid_cap.ctx = NULL;
1857
1858 mutex_unlock(&fimc->lock);
1859 }
1860
1861 static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
1862 .registered = fimc_capture_subdev_registered,
1863 .unregistered = fimc_capture_subdev_unregistered,
1864 };
1865
fimc_initialize_capture_subdev(struct fimc_dev * fimc)1866 int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
1867 {
1868 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1869 int ret;
1870
1871 v4l2_subdev_init(sd, &fimc_subdev_ops);
1872 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1873 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
1874
1875 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
1876 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
1877 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1878 ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM,
1879 fimc->vid_cap.sd_pads);
1880 if (ret)
1881 return ret;
1882
1883 sd->entity.ops = &fimc_sd_media_ops;
1884 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1885 sd->internal_ops = &fimc_capture_sd_internal_ops;
1886 v4l2_set_subdevdata(sd, fimc);
1887 return 0;
1888 }
1889
fimc_unregister_capture_subdev(struct fimc_dev * fimc)1890 void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
1891 {
1892 struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
1893
1894 v4l2_device_unregister_subdev(sd);
1895 media_entity_cleanup(&sd->entity);
1896 v4l2_set_subdevdata(sd, NULL);
1897 }
1898