1
2
3
4
5
6
7
8
9
10
11#define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
12
13#include <linux/bug.h>
14#include <linux/clk.h>
15#include <linux/device.h>
16#include <linux/errno.h>
17#include <linux/i2c.h>
18#include <linux/interrupt.h>
19#include <linux/io.h>
20#include <linux/kernel.h>
21#include <linux/list.h>
22#include <linux/module.h>
23#include <linux/platform_device.h>
24#include <linux/pm_runtime.h>
25#include <linux/ratelimit.h>
26#include <linux/slab.h>
27#include <linux/types.h>
28#include <linux/videodev2.h>
29
30#include <media/media-device.h>
31#include <media/v4l2-ctrls.h>
32#include <media/v4l2-event.h>
33#include <media/v4l2-ioctl.h>
34#include <media/videobuf2-v4l2.h>
35#include <media/videobuf2-dma-contig.h>
36
37#include "camif-core.h"
38#include "camif-regs.h"
39
40static int debug;
41module_param(debug, int, 0644);
42
43
44static void camif_cfg_video_path(struct camif_vp *vp)
45{
46 WARN_ON(s3c_camif_get_scaler_config(vp, &vp->scaler));
47 camif_hw_set_scaler(vp);
48 camif_hw_set_flip(vp);
49 camif_hw_set_target_format(vp);
50 camif_hw_set_output_dma(vp);
51}
52
53static void camif_prepare_dma_offset(struct camif_vp *vp)
54{
55 struct camif_frame *f = &vp->out_frame;
56
57 f->dma_offset.initial = f->rect.top * f->f_width + f->rect.left;
58 f->dma_offset.line = f->f_width - (f->rect.left + f->rect.width);
59
60 pr_debug("dma_offset: initial: %d, line: %d\n",
61 f->dma_offset.initial, f->dma_offset.line);
62}
63
64
65static int s3c_camif_hw_init(struct camif_dev *camif, struct camif_vp *vp)
66{
67 const struct s3c_camif_variant *variant = camif->variant;
68
69 if (camif->sensor.sd == NULL || vp->out_fmt == NULL)
70 return -EINVAL;
71
72 if (variant->ip_revision == S3C244X_CAMIF_IP_REV)
73 camif_hw_clear_fifo_overflow(vp);
74 camif_hw_set_camera_bus(camif);
75 camif_hw_set_source_format(camif);
76 camif_hw_set_camera_crop(camif);
77 camif_hw_set_test_pattern(camif, camif->test_pattern);
78 if (variant->has_img_effect)
79 camif_hw_set_effect(camif, camif->colorfx,
80 camif->colorfx_cr, camif->colorfx_cb);
81 if (variant->ip_revision == S3C6410_CAMIF_IP_REV)
82 camif_hw_set_input_path(vp);
83 camif_cfg_video_path(vp);
84 vp->state &= ~ST_VP_CONFIG;
85
86 return 0;
87}
88
89
90
91
92
93
94
95static int s3c_camif_hw_vp_init(struct camif_dev *camif, struct camif_vp *vp)
96{
97 unsigned int ip_rev = camif->variant->ip_revision;
98
99 if (vp->out_fmt == NULL)
100 return -EINVAL;
101
102 camif_prepare_dma_offset(vp);
103 if (ip_rev == S3C244X_CAMIF_IP_REV)
104 camif_hw_clear_fifo_overflow(vp);
105 camif_cfg_video_path(vp);
106 vp->state &= ~ST_VP_CONFIG;
107 return 0;
108}
109
110static int sensor_set_power(struct camif_dev *camif, int on)
111{
112 struct cam_sensor *sensor = &camif->sensor;
113 int err = 0;
114
115 if (camif->sensor.power_count == !on)
116 err = v4l2_subdev_call(sensor->sd, core, s_power, on);
117 if (err == -ENOIOCTLCMD)
118 err = 0;
119 if (!err)
120 sensor->power_count += on ? 1 : -1;
121
122 pr_debug("on: %d, power_count: %d, err: %d\n",
123 on, sensor->power_count, err);
124
125 return err;
126}
127
128static int sensor_set_streaming(struct camif_dev *camif, int on)
129{
130 struct cam_sensor *sensor = &camif->sensor;
131 int err = 0;
132
133 if (camif->sensor.stream_count == !on)
134 err = v4l2_subdev_call(sensor->sd, video, s_stream, on);
135 if (!err)
136 sensor->stream_count += on ? 1 : -1;
137
138 pr_debug("on: %d, stream_count: %d, err: %d\n",
139 on, sensor->stream_count, err);
140
141 return err;
142}
143
144
145
146
147
148
149static int camif_reinitialize(struct camif_vp *vp)
150{
151 struct camif_dev *camif = vp->camif;
152 struct camif_buffer *buf;
153 unsigned long flags;
154 bool streaming;
155
156 spin_lock_irqsave(&camif->slock, flags);
157 streaming = vp->state & ST_VP_SENSOR_STREAMING;
158
159 vp->state &= ~(ST_VP_PENDING | ST_VP_RUNNING | ST_VP_OFF |
160 ST_VP_ABORTING | ST_VP_STREAMING |
161 ST_VP_SENSOR_STREAMING | ST_VP_LASTIRQ);
162
163
164 while (!list_empty(&vp->pending_buf_q)) {
165 buf = camif_pending_queue_pop(vp);
166 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
167 }
168
169 while (!list_empty(&vp->active_buf_q)) {
170 buf = camif_active_queue_pop(vp);
171 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
172 }
173
174 spin_unlock_irqrestore(&camif->slock, flags);
175
176 if (!streaming)
177 return 0;
178
179 return sensor_set_streaming(camif, 0);
180}
181
182static bool s3c_vp_active(struct camif_vp *vp)
183{
184 struct camif_dev *camif = vp->camif;
185 unsigned long flags;
186 bool ret;
187
188 spin_lock_irqsave(&camif->slock, flags);
189 ret = (vp->state & ST_VP_RUNNING) || (vp->state & ST_VP_PENDING);
190 spin_unlock_irqrestore(&camif->slock, flags);
191
192 return ret;
193}
194
195static bool camif_is_streaming(struct camif_dev *camif)
196{
197 unsigned long flags;
198 bool status;
199
200 spin_lock_irqsave(&camif->slock, flags);
201 status = camif->stream_count > 0;
202 spin_unlock_irqrestore(&camif->slock, flags);
203
204 return status;
205}
206
207static int camif_stop_capture(struct camif_vp *vp)
208{
209 struct camif_dev *camif = vp->camif;
210 unsigned long flags;
211 int ret;
212
213 if (!s3c_vp_active(vp))
214 return 0;
215
216 spin_lock_irqsave(&camif->slock, flags);
217 vp->state &= ~(ST_VP_OFF | ST_VP_LASTIRQ);
218 vp->state |= ST_VP_ABORTING;
219 spin_unlock_irqrestore(&camif->slock, flags);
220
221 ret = wait_event_timeout(vp->irq_queue,
222 !(vp->state & ST_VP_ABORTING),
223 msecs_to_jiffies(CAMIF_STOP_TIMEOUT));
224
225 spin_lock_irqsave(&camif->slock, flags);
226
227 if (ret == 0 && !(vp->state & ST_VP_OFF)) {
228
229 vp->state &= ~(ST_VP_OFF | ST_VP_ABORTING |
230 ST_VP_LASTIRQ);
231
232 camif_hw_disable_capture(vp);
233 camif_hw_enable_scaler(vp, false);
234 }
235
236 spin_unlock_irqrestore(&camif->slock, flags);
237
238 return camif_reinitialize(vp);
239}
240
241static int camif_prepare_addr(struct camif_vp *vp, struct vb2_buffer *vb,
242 struct camif_addr *paddr)
243{
244 struct camif_frame *frame = &vp->out_frame;
245 u32 pix_size;
246
247 if (vb == NULL || frame == NULL)
248 return -EINVAL;
249
250 pix_size = frame->rect.width * frame->rect.height;
251
252 pr_debug("colplanes: %d, pix_size: %u\n",
253 vp->out_fmt->colplanes, pix_size);
254
255 paddr->y = vb2_dma_contig_plane_dma_addr(vb, 0);
256
257 switch (vp->out_fmt->colplanes) {
258 case 1:
259 paddr->cb = 0;
260 paddr->cr = 0;
261 break;
262 case 2:
263
264 paddr->cb = (u32)(paddr->y + pix_size);
265 paddr->cr = 0;
266 break;
267 case 3:
268 paddr->cb = (u32)(paddr->y + pix_size);
269
270 if (vp->out_fmt->color == IMG_FMT_YCBCR422P)
271 paddr->cr = (u32)(paddr->cb + (pix_size >> 1));
272 else
273 paddr->cr = (u32)(paddr->cb + (pix_size >> 2));
274
275 if (vp->out_fmt->color == IMG_FMT_YCRCB420)
276 swap(paddr->cb, paddr->cr);
277 break;
278 default:
279 return -EINVAL;
280 }
281
282 pr_debug("DMA address: y: %pad cb: %pad cr: %pad\n",
283 &paddr->y, &paddr->cb, &paddr->cr);
284
285 return 0;
286}
287
288irqreturn_t s3c_camif_irq_handler(int irq, void *priv)
289{
290 struct camif_vp *vp = priv;
291 struct camif_dev *camif = vp->camif;
292 unsigned int ip_rev = camif->variant->ip_revision;
293 unsigned int status;
294
295 spin_lock(&camif->slock);
296
297 if (ip_rev == S3C6410_CAMIF_IP_REV)
298 camif_hw_clear_pending_irq(vp);
299
300 status = camif_hw_get_status(vp);
301
302 if (ip_rev == S3C244X_CAMIF_IP_REV && (status & CISTATUS_OVF_MASK)) {
303 camif_hw_clear_fifo_overflow(vp);
304 goto unlock;
305 }
306
307 if (vp->state & ST_VP_ABORTING) {
308 if (vp->state & ST_VP_OFF) {
309
310 vp->state &= ~(ST_VP_OFF | ST_VP_ABORTING |
311 ST_VP_LASTIRQ);
312 wake_up(&vp->irq_queue);
313 goto unlock;
314 } else if (vp->state & ST_VP_LASTIRQ) {
315 camif_hw_disable_capture(vp);
316 camif_hw_enable_scaler(vp, false);
317 camif_hw_set_lastirq(vp, false);
318 vp->state |= ST_VP_OFF;
319 } else {
320
321 camif_hw_set_lastirq(vp, true);
322 vp->state |= ST_VP_LASTIRQ;
323 }
324 }
325
326 if (!list_empty(&vp->pending_buf_q) && (vp->state & ST_VP_RUNNING) &&
327 !list_empty(&vp->active_buf_q)) {
328 unsigned int index;
329 struct camif_buffer *vbuf;
330
331
332
333
334
335 index = (CISTATUS_FRAMECNT(status) + 2) & 1;
336 vbuf = camif_active_queue_peek(vp, index);
337
338 if (!WARN_ON(vbuf == NULL)) {
339
340 vbuf->vb.vb2_buf.timestamp = ktime_get_ns();
341 vbuf->vb.sequence = vp->frame_sequence++;
342 vb2_buffer_done(&vbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
343
344
345 vbuf = camif_pending_queue_pop(vp);
346 vbuf->index = index;
347 camif_hw_set_output_addr(vp, &vbuf->paddr, index);
348 camif_hw_set_output_addr(vp, &vbuf->paddr, index + 2);
349
350
351 camif_active_queue_add(vp, vbuf);
352 }
353 } else if (!(vp->state & ST_VP_ABORTING) &&
354 (vp->state & ST_VP_PENDING)) {
355 vp->state |= ST_VP_RUNNING;
356 }
357
358 if (vp->state & ST_VP_CONFIG) {
359 camif_prepare_dma_offset(vp);
360 camif_hw_set_camera_crop(camif);
361 camif_hw_set_scaler(vp);
362 camif_hw_set_flip(vp);
363 camif_hw_set_test_pattern(camif, camif->test_pattern);
364 if (camif->variant->has_img_effect)
365 camif_hw_set_effect(camif, camif->colorfx,
366 camif->colorfx_cr, camif->colorfx_cb);
367 vp->state &= ~ST_VP_CONFIG;
368 }
369unlock:
370 spin_unlock(&camif->slock);
371 return IRQ_HANDLED;
372}
373
374static int start_streaming(struct vb2_queue *vq, unsigned int count)
375{
376 struct camif_vp *vp = vb2_get_drv_priv(vq);
377 struct camif_dev *camif = vp->camif;
378 unsigned long flags;
379 int ret;
380
381
382
383
384
385
386
387 spin_lock_irqsave(&camif->slock, flags);
388
389 if (camif->stream_count == 0) {
390 camif_hw_reset(camif);
391 ret = s3c_camif_hw_init(camif, vp);
392 } else {
393 ret = s3c_camif_hw_vp_init(camif, vp);
394 }
395 spin_unlock_irqrestore(&camif->slock, flags);
396
397 if (ret < 0) {
398 camif_reinitialize(vp);
399 return ret;
400 }
401
402 spin_lock_irqsave(&camif->slock, flags);
403 vp->frame_sequence = 0;
404 vp->state |= ST_VP_PENDING;
405
406 if (!list_empty(&vp->pending_buf_q) &&
407 (!(vp->state & ST_VP_STREAMING) ||
408 !(vp->state & ST_VP_SENSOR_STREAMING))) {
409
410 camif_hw_enable_scaler(vp, vp->scaler.enable);
411 camif_hw_enable_capture(vp);
412 vp->state |= ST_VP_STREAMING;
413
414 if (!(vp->state & ST_VP_SENSOR_STREAMING)) {
415 vp->state |= ST_VP_SENSOR_STREAMING;
416 spin_unlock_irqrestore(&camif->slock, flags);
417 ret = sensor_set_streaming(camif, 1);
418 if (ret)
419 v4l2_err(&vp->vdev, "Sensor s_stream failed\n");
420 if (debug)
421 camif_hw_dump_regs(camif, __func__);
422
423 return ret;
424 }
425 }
426
427 spin_unlock_irqrestore(&camif->slock, flags);
428 return 0;
429}
430
431static void stop_streaming(struct vb2_queue *vq)
432{
433 struct camif_vp *vp = vb2_get_drv_priv(vq);
434 camif_stop_capture(vp);
435}
436
437static int queue_setup(struct vb2_queue *vq,
438 unsigned int *num_buffers, unsigned int *num_planes,
439 unsigned int sizes[], struct device *alloc_devs[])
440{
441 struct camif_vp *vp = vb2_get_drv_priv(vq);
442 struct camif_frame *frame = &vp->out_frame;
443 const struct camif_fmt *fmt = vp->out_fmt;
444 unsigned int size;
445
446 if (fmt == NULL)
447 return -EINVAL;
448
449 size = (frame->f_width * frame->f_height * fmt->depth) / 8;
450
451 if (*num_planes)
452 return sizes[0] < size ? -EINVAL : 0;
453
454 *num_planes = 1;
455 sizes[0] = size;
456
457 pr_debug("size: %u\n", sizes[0]);
458 return 0;
459}
460
461static int buffer_prepare(struct vb2_buffer *vb)
462{
463 struct camif_vp *vp = vb2_get_drv_priv(vb->vb2_queue);
464
465 if (vp->out_fmt == NULL)
466 return -EINVAL;
467
468 if (vb2_plane_size(vb, 0) < vp->payload) {
469 v4l2_err(&vp->vdev, "buffer too small: %lu, required: %u\n",
470 vb2_plane_size(vb, 0), vp->payload);
471 return -EINVAL;
472 }
473 vb2_set_plane_payload(vb, 0, vp->payload);
474
475 return 0;
476}
477
478static void buffer_queue(struct vb2_buffer *vb)
479{
480 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
481 struct camif_buffer *buf = container_of(vbuf, struct camif_buffer, vb);
482 struct camif_vp *vp = vb2_get_drv_priv(vb->vb2_queue);
483 struct camif_dev *camif = vp->camif;
484 unsigned long flags;
485
486 spin_lock_irqsave(&camif->slock, flags);
487 WARN_ON(camif_prepare_addr(vp, &buf->vb.vb2_buf, &buf->paddr));
488
489 if (!(vp->state & ST_VP_STREAMING) && vp->active_buffers < 2) {
490
491 buf->index = vp->buf_index;
492
493 camif_hw_set_output_addr(vp, &buf->paddr, buf->index);
494 camif_hw_set_output_addr(vp, &buf->paddr, buf->index + 2);
495
496 camif_active_queue_add(vp, buf);
497 vp->buf_index = !vp->buf_index;
498 } else {
499 camif_pending_queue_add(vp, buf);
500 }
501
502 if (vb2_is_streaming(&vp->vb_queue) && !list_empty(&vp->pending_buf_q)
503 && !(vp->state & ST_VP_STREAMING)) {
504
505 vp->state |= ST_VP_STREAMING;
506 camif_hw_enable_scaler(vp, vp->scaler.enable);
507 camif_hw_enable_capture(vp);
508 spin_unlock_irqrestore(&camif->slock, flags);
509
510 if (!(vp->state & ST_VP_SENSOR_STREAMING)) {
511 if (sensor_set_streaming(camif, 1) == 0)
512 vp->state |= ST_VP_SENSOR_STREAMING;
513 else
514 v4l2_err(&vp->vdev, "Sensor s_stream failed\n");
515
516 if (debug)
517 camif_hw_dump_regs(camif, __func__);
518 }
519 return;
520 }
521 spin_unlock_irqrestore(&camif->slock, flags);
522}
523
524static const struct vb2_ops s3c_camif_qops = {
525 .queue_setup = queue_setup,
526 .buf_prepare = buffer_prepare,
527 .buf_queue = buffer_queue,
528 .wait_prepare = vb2_ops_wait_prepare,
529 .wait_finish = vb2_ops_wait_finish,
530 .start_streaming = start_streaming,
531 .stop_streaming = stop_streaming,
532};
533
534static int s3c_camif_open(struct file *file)
535{
536 struct camif_vp *vp = video_drvdata(file);
537 struct camif_dev *camif = vp->camif;
538 int ret;
539
540 pr_debug("[vp%d] state: %#x, owner: %p, pid: %d\n", vp->id,
541 vp->state, vp->owner, task_pid_nr(current));
542
543 if (mutex_lock_interruptible(&camif->lock))
544 return -ERESTARTSYS;
545
546 ret = v4l2_fh_open(file);
547 if (ret < 0)
548 goto unlock;
549
550 ret = pm_runtime_get_sync(camif->dev);
551 if (ret < 0)
552 goto err_pm;
553
554 ret = sensor_set_power(camif, 1);
555 if (!ret)
556 goto unlock;
557
558 pm_runtime_put(camif->dev);
559err_pm:
560 v4l2_fh_release(file);
561unlock:
562 mutex_unlock(&camif->lock);
563 return ret;
564}
565
566static int s3c_camif_close(struct file *file)
567{
568 struct camif_vp *vp = video_drvdata(file);
569 struct camif_dev *camif = vp->camif;
570 int ret;
571
572 pr_debug("[vp%d] state: %#x, owner: %p, pid: %d\n", vp->id,
573 vp->state, vp->owner, task_pid_nr(current));
574
575 mutex_lock(&camif->lock);
576
577 if (vp->owner == file->private_data) {
578 camif_stop_capture(vp);
579 vb2_queue_release(&vp->vb_queue);
580 vp->owner = NULL;
581 }
582
583 sensor_set_power(camif, 0);
584
585 pm_runtime_put(camif->dev);
586 ret = v4l2_fh_release(file);
587
588 mutex_unlock(&camif->lock);
589 return ret;
590}
591
592static __poll_t s3c_camif_poll(struct file *file,
593 struct poll_table_struct *wait)
594{
595 struct camif_vp *vp = video_drvdata(file);
596 struct camif_dev *camif = vp->camif;
597 __poll_t ret;
598
599 mutex_lock(&camif->lock);
600 if (vp->owner && vp->owner != file->private_data)
601 ret = EPOLLERR;
602 else
603 ret = vb2_poll(&vp->vb_queue, file, wait);
604
605 mutex_unlock(&camif->lock);
606 return ret;
607}
608
609static int s3c_camif_mmap(struct file *file, struct vm_area_struct *vma)
610{
611 struct camif_vp *vp = video_drvdata(file);
612 int ret;
613
614 if (vp->owner && vp->owner != file->private_data)
615 ret = -EBUSY;
616 else
617 ret = vb2_mmap(&vp->vb_queue, vma);
618
619 return ret;
620}
621
622static const struct v4l2_file_operations s3c_camif_fops = {
623 .owner = THIS_MODULE,
624 .open = s3c_camif_open,
625 .release = s3c_camif_close,
626 .poll = s3c_camif_poll,
627 .unlocked_ioctl = video_ioctl2,
628 .mmap = s3c_camif_mmap,
629};
630
631
632
633
634
635static int s3c_camif_vidioc_querycap(struct file *file, void *priv,
636 struct v4l2_capability *cap)
637{
638 struct camif_vp *vp = video_drvdata(file);
639
640 strscpy(cap->driver, S3C_CAMIF_DRIVER_NAME, sizeof(cap->driver));
641 strscpy(cap->card, S3C_CAMIF_DRIVER_NAME, sizeof(cap->card));
642 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s.%d",
643 dev_name(vp->camif->dev), vp->id);
644
645 cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE;
646 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
647
648 return 0;
649}
650
651static int s3c_camif_vidioc_enum_input(struct file *file, void *priv,
652 struct v4l2_input *input)
653{
654 struct camif_vp *vp = video_drvdata(file);
655 struct v4l2_subdev *sensor = vp->camif->sensor.sd;
656
657 if (input->index || sensor == NULL)
658 return -EINVAL;
659
660 input->type = V4L2_INPUT_TYPE_CAMERA;
661 strscpy(input->name, sensor->name, sizeof(input->name));
662 return 0;
663}
664
665static int s3c_camif_vidioc_s_input(struct file *file, void *priv,
666 unsigned int i)
667{
668 return i == 0 ? 0 : -EINVAL;
669}
670
671static int s3c_camif_vidioc_g_input(struct file *file, void *priv,
672 unsigned int *i)
673{
674 *i = 0;
675 return 0;
676}
677
678static int s3c_camif_vidioc_enum_fmt(struct file *file, void *priv,
679 struct v4l2_fmtdesc *f)
680{
681 struct camif_vp *vp = video_drvdata(file);
682 const struct camif_fmt *fmt;
683
684 fmt = s3c_camif_find_format(vp, NULL, f->index);
685 if (!fmt)
686 return -EINVAL;
687
688 strscpy(f->description, fmt->name, sizeof(f->description));
689 f->pixelformat = fmt->fourcc;
690
691 pr_debug("fmt(%d): %s\n", f->index, f->description);
692 return 0;
693}
694
695static int s3c_camif_vidioc_g_fmt(struct file *file, void *priv,
696 struct v4l2_format *f)
697{
698 struct camif_vp *vp = video_drvdata(file);
699 struct v4l2_pix_format *pix = &f->fmt.pix;
700 struct camif_frame *frame = &vp->out_frame;
701 const struct camif_fmt *fmt = vp->out_fmt;
702
703 pix->bytesperline = frame->f_width * fmt->ybpp;
704 pix->sizeimage = vp->payload;
705
706 pix->pixelformat = fmt->fourcc;
707 pix->width = frame->f_width;
708 pix->height = frame->f_height;
709 pix->field = V4L2_FIELD_NONE;
710 pix->colorspace = V4L2_COLORSPACE_JPEG;
711
712 return 0;
713}
714
715static int __camif_video_try_format(struct camif_vp *vp,
716 struct v4l2_pix_format *pix,
717 const struct camif_fmt **ffmt)
718{
719 struct camif_dev *camif = vp->camif;
720 struct v4l2_rect *crop = &camif->camif_crop;
721 unsigned int wmin, hmin, sc_hrmax, sc_vrmax;
722 const struct vp_pix_limits *pix_lim;
723 const struct camif_fmt *fmt;
724
725 fmt = s3c_camif_find_format(vp, &pix->pixelformat, 0);
726
727 if (WARN_ON(fmt == NULL))
728 return -EINVAL;
729
730 if (ffmt)
731 *ffmt = fmt;
732
733 pix_lim = &camif->variant->vp_pix_limits[vp->id];
734
735 pr_debug("fmt: %ux%u, crop: %ux%u, bytesperline: %u\n",
736 pix->width, pix->height, crop->width, crop->height,
737 pix->bytesperline);
738
739
740
741
742 sc_hrmax = min(SCALER_MAX_RATIO, 1 << (ffs(crop->width) - 3));
743 sc_vrmax = min(SCALER_MAX_RATIO, 1 << (ffs(crop->height) - 1));
744
745 wmin = max_t(u32, pix_lim->min_out_width, crop->width / sc_hrmax);
746 wmin = round_up(wmin, pix_lim->out_width_align);
747 hmin = max_t(u32, 8, crop->height / sc_vrmax);
748 hmin = round_up(hmin, 8);
749
750 v4l_bound_align_image(&pix->width, wmin, pix_lim->max_sc_out_width,
751 ffs(pix_lim->out_width_align) - 1,
752 &pix->height, hmin, pix_lim->max_height, 0, 0);
753
754 pix->bytesperline = pix->width * fmt->ybpp;
755 pix->sizeimage = (pix->width * pix->height * fmt->depth) / 8;
756 pix->pixelformat = fmt->fourcc;
757 pix->colorspace = V4L2_COLORSPACE_JPEG;
758 pix->field = V4L2_FIELD_NONE;
759
760 pr_debug("%ux%u, wmin: %d, hmin: %d, sc_hrmax: %d, sc_vrmax: %d\n",
761 pix->width, pix->height, wmin, hmin, sc_hrmax, sc_vrmax);
762
763 return 0;
764}
765
766static int s3c_camif_vidioc_try_fmt(struct file *file, void *priv,
767 struct v4l2_format *f)
768{
769 struct camif_vp *vp = video_drvdata(file);
770 return __camif_video_try_format(vp, &f->fmt.pix, NULL);
771}
772
773static int s3c_camif_vidioc_s_fmt(struct file *file, void *priv,
774 struct v4l2_format *f)
775{
776 struct v4l2_pix_format *pix = &f->fmt.pix;
777 struct camif_vp *vp = video_drvdata(file);
778 struct camif_frame *out_frame = &vp->out_frame;
779 const struct camif_fmt *fmt = NULL;
780 int ret;
781
782 pr_debug("[vp%d]\n", vp->id);
783
784 if (vb2_is_busy(&vp->vb_queue))
785 return -EBUSY;
786
787 ret = __camif_video_try_format(vp, &f->fmt.pix, &fmt);
788 if (ret < 0)
789 return ret;
790
791 vp->out_fmt = fmt;
792 vp->payload = pix->sizeimage;
793 out_frame->f_width = pix->width;
794 out_frame->f_height = pix->height;
795
796
797 out_frame->rect.width = pix->width;
798 out_frame->rect.height = pix->height;
799 out_frame->rect.left = 0;
800 out_frame->rect.top = 0;
801
802 if (vp->owner == NULL)
803 vp->owner = priv;
804
805 pr_debug("%ux%u. payload: %u. fmt: %s. %d %d. sizeimage: %d. bpl: %d\n",
806 out_frame->f_width, out_frame->f_height, vp->payload, fmt->name,
807 pix->width * pix->height * fmt->depth, fmt->depth,
808 pix->sizeimage, pix->bytesperline);
809
810 return 0;
811}
812
813
814static int camif_pipeline_validate(struct camif_dev *camif)
815{
816 struct v4l2_subdev_format src_fmt;
817 struct media_pad *pad;
818 int ret;
819
820
821 pad = media_entity_remote_pad(&camif->pads[0]);
822 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
823 return -EPIPE;
824
825 src_fmt.pad = pad->index;
826 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
827 ret = v4l2_subdev_call(camif->sensor.sd, pad, get_fmt, NULL, &src_fmt);
828 if (ret < 0 && ret != -ENOIOCTLCMD)
829 return -EPIPE;
830
831 if (src_fmt.format.width != camif->mbus_fmt.width ||
832 src_fmt.format.height != camif->mbus_fmt.height ||
833 src_fmt.format.code != camif->mbus_fmt.code)
834 return -EPIPE;
835
836 return 0;
837}
838
839static int s3c_camif_streamon(struct file *file, void *priv,
840 enum v4l2_buf_type type)
841{
842 struct camif_vp *vp = video_drvdata(file);
843 struct camif_dev *camif = vp->camif;
844 struct media_entity *sensor = &camif->sensor.sd->entity;
845 int ret;
846
847 pr_debug("[vp%d]\n", vp->id);
848
849 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
850 return -EINVAL;
851
852 if (vp->owner && vp->owner != priv)
853 return -EBUSY;
854
855 if (s3c_vp_active(vp))
856 return 0;
857
858 ret = media_pipeline_start(sensor, camif->m_pipeline);
859 if (ret < 0)
860 return ret;
861
862 ret = camif_pipeline_validate(camif);
863 if (ret < 0) {
864 media_pipeline_stop(sensor);
865 return ret;
866 }
867
868 return vb2_streamon(&vp->vb_queue, type);
869}
870
871static int s3c_camif_streamoff(struct file *file, void *priv,
872 enum v4l2_buf_type type)
873{
874 struct camif_vp *vp = video_drvdata(file);
875 struct camif_dev *camif = vp->camif;
876 int ret;
877
878 pr_debug("[vp%d]\n", vp->id);
879
880 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
881 return -EINVAL;
882
883 if (vp->owner && vp->owner != priv)
884 return -EBUSY;
885
886 ret = vb2_streamoff(&vp->vb_queue, type);
887 if (ret == 0)
888 media_pipeline_stop(&camif->sensor.sd->entity);
889 return ret;
890}
891
892static int s3c_camif_reqbufs(struct file *file, void *priv,
893 struct v4l2_requestbuffers *rb)
894{
895 struct camif_vp *vp = video_drvdata(file);
896 int ret;
897
898 pr_debug("[vp%d] rb count: %d, owner: %p, priv: %p\n",
899 vp->id, rb->count, vp->owner, priv);
900
901 if (vp->owner && vp->owner != priv)
902 return -EBUSY;
903
904 if (rb->count)
905 rb->count = max_t(u32, CAMIF_REQ_BUFS_MIN, rb->count);
906 else
907 vp->owner = NULL;
908
909 ret = vb2_reqbufs(&vp->vb_queue, rb);
910 if (ret < 0)
911 return ret;
912
913 if (rb->count && rb->count < CAMIF_REQ_BUFS_MIN) {
914 rb->count = 0;
915 vb2_reqbufs(&vp->vb_queue, rb);
916 ret = -ENOMEM;
917 }
918
919 vp->reqbufs_count = rb->count;
920 if (vp->owner == NULL && rb->count > 0)
921 vp->owner = priv;
922
923 return ret;
924}
925
926static int s3c_camif_querybuf(struct file *file, void *priv,
927 struct v4l2_buffer *buf)
928{
929 struct camif_vp *vp = video_drvdata(file);
930 return vb2_querybuf(&vp->vb_queue, buf);
931}
932
933static int s3c_camif_qbuf(struct file *file, void *priv,
934 struct v4l2_buffer *buf)
935{
936 struct camif_vp *vp = video_drvdata(file);
937
938 pr_debug("[vp%d]\n", vp->id);
939
940 if (vp->owner && vp->owner != priv)
941 return -EBUSY;
942
943 return vb2_qbuf(&vp->vb_queue, vp->vdev.v4l2_dev->mdev, buf);
944}
945
946static int s3c_camif_dqbuf(struct file *file, void *priv,
947 struct v4l2_buffer *buf)
948{
949 struct camif_vp *vp = video_drvdata(file);
950
951 pr_debug("[vp%d] sequence: %d\n", vp->id, vp->frame_sequence);
952
953 if (vp->owner && vp->owner != priv)
954 return -EBUSY;
955
956 return vb2_dqbuf(&vp->vb_queue, buf, file->f_flags & O_NONBLOCK);
957}
958
959static int s3c_camif_create_bufs(struct file *file, void *priv,
960 struct v4l2_create_buffers *create)
961{
962 struct camif_vp *vp = video_drvdata(file);
963 int ret;
964
965 if (vp->owner && vp->owner != priv)
966 return -EBUSY;
967
968 create->count = max_t(u32, 1, create->count);
969 ret = vb2_create_bufs(&vp->vb_queue, create);
970
971 if (!ret && vp->owner == NULL)
972 vp->owner = priv;
973
974 return ret;
975}
976
977static int s3c_camif_prepare_buf(struct file *file, void *priv,
978 struct v4l2_buffer *b)
979{
980 struct camif_vp *vp = video_drvdata(file);
981 return vb2_prepare_buf(&vp->vb_queue, vp->vdev.v4l2_dev->mdev, b);
982}
983
984static int s3c_camif_g_selection(struct file *file, void *priv,
985 struct v4l2_selection *sel)
986{
987 struct camif_vp *vp = video_drvdata(file);
988
989 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
990 return -EINVAL;
991
992 switch (sel->target) {
993 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
994 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
995 sel->r.left = 0;
996 sel->r.top = 0;
997 sel->r.width = vp->out_frame.f_width;
998 sel->r.height = vp->out_frame.f_height;
999 return 0;
1000
1001 case V4L2_SEL_TGT_COMPOSE:
1002 sel->r = vp->out_frame.rect;
1003 return 0;
1004 }
1005
1006 return -EINVAL;
1007}
1008
1009static void __camif_try_compose(struct camif_dev *camif, struct camif_vp *vp,
1010 struct v4l2_rect *r)
1011{
1012
1013 if (camif->variant->ip_revision == S3C244X_CAMIF_IP_REV) {
1014 *r = vp->out_frame.rect;
1015 return;
1016 }
1017
1018
1019}
1020
1021static int s3c_camif_s_selection(struct file *file, void *priv,
1022 struct v4l2_selection *sel)
1023{
1024 struct camif_vp *vp = video_drvdata(file);
1025 struct camif_dev *camif = vp->camif;
1026 struct v4l2_rect rect = sel->r;
1027 unsigned long flags;
1028
1029 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1030 sel->target != V4L2_SEL_TGT_COMPOSE)
1031 return -EINVAL;
1032
1033 __camif_try_compose(camif, vp, &rect);
1034
1035 sel->r = rect;
1036 spin_lock_irqsave(&camif->slock, flags);
1037 vp->out_frame.rect = rect;
1038 vp->state |= ST_VP_CONFIG;
1039 spin_unlock_irqrestore(&camif->slock, flags);
1040
1041 pr_debug("type: %#x, target: %#x, flags: %#x, (%d,%d)/%dx%d\n",
1042 sel->type, sel->target, sel->flags,
1043 sel->r.left, sel->r.top, sel->r.width, sel->r.height);
1044
1045 return 0;
1046}
1047
1048static const struct v4l2_ioctl_ops s3c_camif_ioctl_ops = {
1049 .vidioc_querycap = s3c_camif_vidioc_querycap,
1050 .vidioc_enum_input = s3c_camif_vidioc_enum_input,
1051 .vidioc_g_input = s3c_camif_vidioc_g_input,
1052 .vidioc_s_input = s3c_camif_vidioc_s_input,
1053 .vidioc_enum_fmt_vid_cap = s3c_camif_vidioc_enum_fmt,
1054 .vidioc_try_fmt_vid_cap = s3c_camif_vidioc_try_fmt,
1055 .vidioc_s_fmt_vid_cap = s3c_camif_vidioc_s_fmt,
1056 .vidioc_g_fmt_vid_cap = s3c_camif_vidioc_g_fmt,
1057 .vidioc_g_selection = s3c_camif_g_selection,
1058 .vidioc_s_selection = s3c_camif_s_selection,
1059 .vidioc_reqbufs = s3c_camif_reqbufs,
1060 .vidioc_querybuf = s3c_camif_querybuf,
1061 .vidioc_prepare_buf = s3c_camif_prepare_buf,
1062 .vidioc_create_bufs = s3c_camif_create_bufs,
1063 .vidioc_qbuf = s3c_camif_qbuf,
1064 .vidioc_dqbuf = s3c_camif_dqbuf,
1065 .vidioc_streamon = s3c_camif_streamon,
1066 .vidioc_streamoff = s3c_camif_streamoff,
1067 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1068 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1069 .vidioc_log_status = v4l2_ctrl_log_status,
1070};
1071
1072
1073
1074
1075static int s3c_camif_video_s_ctrl(struct v4l2_ctrl *ctrl)
1076{
1077 struct camif_vp *vp = ctrl->priv;
1078 struct camif_dev *camif = vp->camif;
1079 unsigned long flags;
1080
1081 pr_debug("[vp%d] ctrl: %s, value: %d\n", vp->id,
1082 ctrl->name, ctrl->val);
1083
1084 spin_lock_irqsave(&camif->slock, flags);
1085
1086 switch (ctrl->id) {
1087 case V4L2_CID_HFLIP:
1088 vp->hflip = ctrl->val;
1089 break;
1090
1091 case V4L2_CID_VFLIP:
1092 vp->vflip = ctrl->val;
1093 break;
1094 }
1095
1096 vp->state |= ST_VP_CONFIG;
1097 spin_unlock_irqrestore(&camif->slock, flags);
1098 return 0;
1099}
1100
1101
1102static const struct v4l2_ctrl_ops s3c_camif_video_ctrl_ops = {
1103 .s_ctrl = s3c_camif_video_s_ctrl,
1104};
1105
1106int s3c_camif_register_video_node(struct camif_dev *camif, int idx)
1107{
1108 struct camif_vp *vp = &camif->vp[idx];
1109 struct vb2_queue *q = &vp->vb_queue;
1110 struct video_device *vfd = &vp->vdev;
1111 struct v4l2_ctrl *ctrl;
1112 int ret;
1113
1114 memset(vfd, 0, sizeof(*vfd));
1115 snprintf(vfd->name, sizeof(vfd->name), "camif-%s",
1116 vp->id == 0 ? "codec" : "preview");
1117
1118 vfd->fops = &s3c_camif_fops;
1119 vfd->ioctl_ops = &s3c_camif_ioctl_ops;
1120 vfd->v4l2_dev = &camif->v4l2_dev;
1121 vfd->minor = -1;
1122 vfd->release = video_device_release_empty;
1123 vfd->lock = &camif->lock;
1124 vp->reqbufs_count = 0;
1125
1126 INIT_LIST_HEAD(&vp->pending_buf_q);
1127 INIT_LIST_HEAD(&vp->active_buf_q);
1128
1129 memset(q, 0, sizeof(*q));
1130 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1131 q->io_modes = VB2_MMAP | VB2_USERPTR;
1132 q->ops = &s3c_camif_qops;
1133 q->mem_ops = &vb2_dma_contig_memops;
1134 q->buf_struct_size = sizeof(struct camif_buffer);
1135 q->drv_priv = vp;
1136 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1137 q->lock = &vp->camif->lock;
1138 q->dev = camif->v4l2_dev.dev;
1139
1140 ret = vb2_queue_init(q);
1141 if (ret)
1142 goto err_vd_rel;
1143
1144 vp->pad.flags = MEDIA_PAD_FL_SINK;
1145 ret = media_entity_pads_init(&vfd->entity, 1, &vp->pad);
1146 if (ret)
1147 goto err_vd_rel;
1148
1149 video_set_drvdata(vfd, vp);
1150
1151 v4l2_ctrl_handler_init(&vp->ctrl_handler, 1);
1152 ctrl = v4l2_ctrl_new_std(&vp->ctrl_handler, &s3c_camif_video_ctrl_ops,
1153 V4L2_CID_HFLIP, 0, 1, 1, 0);
1154 if (ctrl)
1155 ctrl->priv = vp;
1156 ctrl = v4l2_ctrl_new_std(&vp->ctrl_handler, &s3c_camif_video_ctrl_ops,
1157 V4L2_CID_VFLIP, 0, 1, 1, 0);
1158 if (ctrl)
1159 ctrl->priv = vp;
1160
1161 ret = vp->ctrl_handler.error;
1162 if (ret < 0)
1163 goto err_me_cleanup;
1164
1165 vfd->ctrl_handler = &vp->ctrl_handler;
1166
1167 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1168 if (ret)
1169 goto err_ctrlh_free;
1170
1171 v4l2_info(&camif->v4l2_dev, "registered %s as /dev/%s\n",
1172 vfd->name, video_device_node_name(vfd));
1173 return 0;
1174
1175err_ctrlh_free:
1176 v4l2_ctrl_handler_free(&vp->ctrl_handler);
1177err_me_cleanup:
1178 media_entity_cleanup(&vfd->entity);
1179err_vd_rel:
1180 video_device_release(vfd);
1181 return ret;
1182}
1183
1184void s3c_camif_unregister_video_node(struct camif_dev *camif, int idx)
1185{
1186 struct video_device *vfd = &camif->vp[idx].vdev;
1187
1188 if (video_is_registered(vfd)) {
1189 video_unregister_device(vfd);
1190 media_entity_cleanup(&vfd->entity);
1191 v4l2_ctrl_handler_free(vfd->ctrl_handler);
1192 }
1193}
1194
1195
1196static const u32 camif_mbus_formats[] = {
1197 MEDIA_BUS_FMT_YUYV8_2X8,
1198 MEDIA_BUS_FMT_YVYU8_2X8,
1199 MEDIA_BUS_FMT_UYVY8_2X8,
1200 MEDIA_BUS_FMT_VYUY8_2X8,
1201};
1202
1203
1204
1205
1206
1207static int s3c_camif_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1208 struct v4l2_subdev_pad_config *cfg,
1209 struct v4l2_subdev_mbus_code_enum *code)
1210{
1211 if (code->index >= ARRAY_SIZE(camif_mbus_formats))
1212 return -EINVAL;
1213
1214 code->code = camif_mbus_formats[code->index];
1215 return 0;
1216}
1217
1218static int s3c_camif_subdev_get_fmt(struct v4l2_subdev *sd,
1219 struct v4l2_subdev_pad_config *cfg,
1220 struct v4l2_subdev_format *fmt)
1221{
1222 struct camif_dev *camif = v4l2_get_subdevdata(sd);
1223 struct v4l2_mbus_framefmt *mf = &fmt->format;
1224
1225 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1226 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1227 fmt->format = *mf;
1228 return 0;
1229 }
1230
1231 mutex_lock(&camif->lock);
1232
1233 switch (fmt->pad) {
1234 case CAMIF_SD_PAD_SINK:
1235
1236 *mf = camif->mbus_fmt;
1237 break;
1238
1239 case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
1240
1241 mf->width = camif->camif_crop.width;
1242 mf->height = camif->camif_crop.height;
1243 mf->code = camif->mbus_fmt.code;
1244 break;
1245 }
1246
1247 mutex_unlock(&camif->lock);
1248 mf->field = V4L2_FIELD_NONE;
1249 mf->colorspace = V4L2_COLORSPACE_JPEG;
1250 return 0;
1251}
1252
1253static void __camif_subdev_try_format(struct camif_dev *camif,
1254 struct v4l2_mbus_framefmt *mf, int pad)
1255{
1256 const struct s3c_camif_variant *variant = camif->variant;
1257 const struct vp_pix_limits *pix_lim;
1258 unsigned int i;
1259
1260
1261 pix_lim = &variant->vp_pix_limits[VP_CODEC];
1262
1263 for (i = 0; i < ARRAY_SIZE(camif_mbus_formats); i++)
1264 if (camif_mbus_formats[i] == mf->code)
1265 break;
1266
1267 if (i == ARRAY_SIZE(camif_mbus_formats))
1268 mf->code = camif_mbus_formats[0];
1269
1270 if (pad == CAMIF_SD_PAD_SINK) {
1271 v4l_bound_align_image(&mf->width, 8, CAMIF_MAX_PIX_WIDTH,
1272 ffs(pix_lim->out_width_align) - 1,
1273 &mf->height, 8, CAMIF_MAX_PIX_HEIGHT, 0,
1274 0);
1275 } else {
1276 struct v4l2_rect *crop = &camif->camif_crop;
1277 v4l_bound_align_image(&mf->width, 8, crop->width,
1278 ffs(pix_lim->out_width_align) - 1,
1279 &mf->height, 8, crop->height,
1280 0, 0);
1281 }
1282
1283 v4l2_dbg(1, debug, &camif->subdev, "%ux%u\n", mf->width, mf->height);
1284}
1285
1286static int s3c_camif_subdev_set_fmt(struct v4l2_subdev *sd,
1287 struct v4l2_subdev_pad_config *cfg,
1288 struct v4l2_subdev_format *fmt)
1289{
1290 struct camif_dev *camif = v4l2_get_subdevdata(sd);
1291 struct v4l2_mbus_framefmt *mf = &fmt->format;
1292 struct v4l2_rect *crop = &camif->camif_crop;
1293 int i;
1294
1295 v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %ux%u\n",
1296 fmt->pad, mf->code, mf->width, mf->height);
1297
1298 mf->field = V4L2_FIELD_NONE;
1299 mf->colorspace = V4L2_COLORSPACE_JPEG;
1300 mutex_lock(&camif->lock);
1301
1302
1303
1304
1305
1306 if (vb2_is_busy(&camif->vp[VP_CODEC].vb_queue) ||
1307 vb2_is_busy(&camif->vp[VP_PREVIEW].vb_queue)) {
1308 mutex_unlock(&camif->lock);
1309 return -EBUSY;
1310 }
1311
1312 __camif_subdev_try_format(camif, mf, fmt->pad);
1313
1314 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1315 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1316 *mf = fmt->format;
1317 mutex_unlock(&camif->lock);
1318 return 0;
1319 }
1320
1321 switch (fmt->pad) {
1322 case CAMIF_SD_PAD_SINK:
1323 camif->mbus_fmt = *mf;
1324
1325 crop->width = mf->width;
1326 crop->height = mf->height;
1327 crop->left = 0;
1328 crop->top = 0;
1329
1330
1331
1332
1333 for (i = 0; i < CAMIF_VP_NUM; i++) {
1334 struct camif_frame *frame = &camif->vp[i].out_frame;
1335 frame->rect = *crop;
1336 frame->f_width = mf->width;
1337 frame->f_height = mf->height;
1338 }
1339 break;
1340
1341 case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
1342
1343 mf->code = camif->mbus_fmt.code;
1344 mf->width = crop->width;
1345 mf->height = crop->height;
1346 break;
1347 }
1348
1349 mutex_unlock(&camif->lock);
1350 return 0;
1351}
1352
1353static int s3c_camif_subdev_get_selection(struct v4l2_subdev *sd,
1354 struct v4l2_subdev_pad_config *cfg,
1355 struct v4l2_subdev_selection *sel)
1356{
1357 struct camif_dev *camif = v4l2_get_subdevdata(sd);
1358 struct v4l2_rect *crop = &camif->camif_crop;
1359 struct v4l2_mbus_framefmt *mf = &camif->mbus_fmt;
1360
1361 if ((sel->target != V4L2_SEL_TGT_CROP &&
1362 sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1363 sel->pad != CAMIF_SD_PAD_SINK)
1364 return -EINVAL;
1365
1366 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1367 sel->r = *v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1368 return 0;
1369 }
1370
1371 mutex_lock(&camif->lock);
1372
1373 if (sel->target == V4L2_SEL_TGT_CROP) {
1374 sel->r = *crop;
1375 } else {
1376 sel->r.width = mf->width;
1377 sel->r.height = mf->height;
1378 sel->r.left = 0;
1379 sel->r.top = 0;
1380 }
1381
1382 mutex_unlock(&camif->lock);
1383
1384 v4l2_dbg(1, debug, sd, "%s: crop: (%d,%d) %dx%d, size: %ux%u\n",
1385 __func__, crop->left, crop->top, crop->width,
1386 crop->height, mf->width, mf->height);
1387
1388 return 0;
1389}
1390
1391static void __camif_try_crop(struct camif_dev *camif, struct v4l2_rect *r)
1392{
1393 struct v4l2_mbus_framefmt *mf = &camif->mbus_fmt;
1394 const struct camif_pix_limits *pix_lim = &camif->variant->pix_limits;
1395 unsigned int left = 2 * r->left;
1396 unsigned int top = 2 * r->top;
1397
1398
1399
1400
1401
1402
1403
1404
1405 v4l_bound_align_image(&r->width, 0, mf->width,
1406 ffs(pix_lim->win_hor_offset_align) - 1,
1407 &r->height, 0, mf->height, 1, 0);
1408
1409 v4l_bound_align_image(&left, 0, mf->width - r->width,
1410 ffs(pix_lim->win_hor_offset_align),
1411 &top, 0, mf->height - r->height, 2, 0);
1412
1413 r->left = left / 2;
1414 r->top = top / 2;
1415 r->width = mf->width - left;
1416 r->height = mf->height - top;
1417
1418
1419
1420
1421
1422 if (camif->variant->ip_revision == S3C244X_CAMIF_IP_REV &&
1423 camif_is_streaming(camif)) {
1424 unsigned int i;
1425
1426 for (i = 0; i < CAMIF_VP_NUM; i++) {
1427 struct v4l2_rect *or = &camif->vp[i].out_frame.rect;
1428 if ((or->width > r->width) == (or->height > r->height))
1429 continue;
1430 *r = camif->camif_crop;
1431 pr_debug("Width/height scaling direction limitation\n");
1432 break;
1433 }
1434 }
1435
1436 v4l2_dbg(1, debug, &camif->v4l2_dev, "crop: (%d,%d)/%dx%d, fmt: %ux%u\n",
1437 r->left, r->top, r->width, r->height, mf->width, mf->height);
1438}
1439
1440static int s3c_camif_subdev_set_selection(struct v4l2_subdev *sd,
1441 struct v4l2_subdev_pad_config *cfg,
1442 struct v4l2_subdev_selection *sel)
1443{
1444 struct camif_dev *camif = v4l2_get_subdevdata(sd);
1445 struct v4l2_rect *crop = &camif->camif_crop;
1446 struct camif_scaler scaler;
1447
1448 if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != CAMIF_SD_PAD_SINK)
1449 return -EINVAL;
1450
1451 mutex_lock(&camif->lock);
1452 __camif_try_crop(camif, &sel->r);
1453
1454 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1455 *v4l2_subdev_get_try_crop(sd, cfg, sel->pad) = sel->r;
1456 } else {
1457 unsigned long flags;
1458 unsigned int i;
1459
1460 spin_lock_irqsave(&camif->slock, flags);
1461 *crop = sel->r;
1462
1463 for (i = 0; i < CAMIF_VP_NUM; i++) {
1464 struct camif_vp *vp = &camif->vp[i];
1465 scaler = vp->scaler;
1466 if (s3c_camif_get_scaler_config(vp, &scaler))
1467 continue;
1468 vp->scaler = scaler;
1469 vp->state |= ST_VP_CONFIG;
1470 }
1471
1472 spin_unlock_irqrestore(&camif->slock, flags);
1473 }
1474 mutex_unlock(&camif->lock);
1475
1476 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %u, f_h: %u\n",
1477 __func__, crop->left, crop->top, crop->width, crop->height,
1478 camif->mbus_fmt.width, camif->mbus_fmt.height);
1479
1480 return 0;
1481}
1482
1483static const struct v4l2_subdev_pad_ops s3c_camif_subdev_pad_ops = {
1484 .enum_mbus_code = s3c_camif_subdev_enum_mbus_code,
1485 .get_selection = s3c_camif_subdev_get_selection,
1486 .set_selection = s3c_camif_subdev_set_selection,
1487 .get_fmt = s3c_camif_subdev_get_fmt,
1488 .set_fmt = s3c_camif_subdev_set_fmt,
1489};
1490
1491static const struct v4l2_subdev_ops s3c_camif_subdev_ops = {
1492 .pad = &s3c_camif_subdev_pad_ops,
1493};
1494
1495static int s3c_camif_subdev_s_ctrl(struct v4l2_ctrl *ctrl)
1496{
1497 struct camif_dev *camif = container_of(ctrl->handler, struct camif_dev,
1498 ctrl_handler);
1499 unsigned long flags;
1500
1501 spin_lock_irqsave(&camif->slock, flags);
1502
1503 switch (ctrl->id) {
1504 case V4L2_CID_COLORFX:
1505 camif->colorfx = camif->ctrl_colorfx->val;
1506
1507 switch (ctrl->val) {
1508 case V4L2_COLORFX_SEPIA:
1509 camif->colorfx_cb = 115;
1510 camif->colorfx_cr = 145;
1511 break;
1512 case V4L2_COLORFX_SET_CBCR:
1513 camif->colorfx_cb = camif->ctrl_colorfx_cbcr->val >> 8;
1514 camif->colorfx_cr = camif->ctrl_colorfx_cbcr->val & 0xff;
1515 break;
1516 default:
1517
1518 camif->colorfx_cb = 128;
1519 camif->colorfx_cr = 128;
1520 }
1521 break;
1522 case V4L2_CID_TEST_PATTERN:
1523 camif->test_pattern = camif->ctrl_test_pattern->val;
1524 break;
1525 default:
1526 WARN_ON(1);
1527 }
1528
1529 camif->vp[VP_CODEC].state |= ST_VP_CONFIG;
1530 camif->vp[VP_PREVIEW].state |= ST_VP_CONFIG;
1531 spin_unlock_irqrestore(&camif->slock, flags);
1532
1533 return 0;
1534}
1535
1536static const struct v4l2_ctrl_ops s3c_camif_subdev_ctrl_ops = {
1537 .s_ctrl = s3c_camif_subdev_s_ctrl,
1538};
1539
1540static const char * const s3c_camif_test_pattern_menu[] = {
1541 "Disabled",
1542 "Color bars",
1543 "Horizontal increment",
1544 "Vertical increment",
1545};
1546
1547int s3c_camif_create_subdev(struct camif_dev *camif)
1548{
1549 struct v4l2_ctrl_handler *handler = &camif->ctrl_handler;
1550 struct v4l2_subdev *sd = &camif->subdev;
1551 int ret;
1552
1553 v4l2_subdev_init(sd, &s3c_camif_subdev_ops);
1554 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1555 strscpy(sd->name, "S3C-CAMIF", sizeof(sd->name));
1556
1557 camif->pads[CAMIF_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1558 camif->pads[CAMIF_SD_PAD_SOURCE_C].flags = MEDIA_PAD_FL_SOURCE;
1559 camif->pads[CAMIF_SD_PAD_SOURCE_P].flags = MEDIA_PAD_FL_SOURCE;
1560
1561 ret = media_entity_pads_init(&sd->entity, CAMIF_SD_PADS_NUM,
1562 camif->pads);
1563 if (ret)
1564 return ret;
1565
1566 v4l2_ctrl_handler_init(handler, 3);
1567 camif->ctrl_test_pattern = v4l2_ctrl_new_std_menu_items(handler,
1568 &s3c_camif_subdev_ctrl_ops, V4L2_CID_TEST_PATTERN,
1569 ARRAY_SIZE(s3c_camif_test_pattern_menu) - 1, 0, 0,
1570 s3c_camif_test_pattern_menu);
1571
1572 if (camif->variant->has_img_effect) {
1573 camif->ctrl_colorfx = v4l2_ctrl_new_std_menu(handler,
1574 &s3c_camif_subdev_ctrl_ops,
1575 V4L2_CID_COLORFX, V4L2_COLORFX_SET_CBCR,
1576 ~0x981f, V4L2_COLORFX_NONE);
1577
1578 camif->ctrl_colorfx_cbcr = v4l2_ctrl_new_std(handler,
1579 &s3c_camif_subdev_ctrl_ops,
1580 V4L2_CID_COLORFX_CBCR, 0, 0xffff, 1, 0);
1581 }
1582
1583 if (handler->error) {
1584 v4l2_ctrl_handler_free(handler);
1585 media_entity_cleanup(&sd->entity);
1586 return handler->error;
1587 }
1588
1589 if (camif->variant->has_img_effect)
1590 v4l2_ctrl_auto_cluster(2, &camif->ctrl_colorfx,
1591 V4L2_COLORFX_SET_CBCR, false);
1592
1593 sd->ctrl_handler = handler;
1594 v4l2_set_subdevdata(sd, camif);
1595
1596 return 0;
1597}
1598
1599void s3c_camif_unregister_subdev(struct camif_dev *camif)
1600{
1601 struct v4l2_subdev *sd = &camif->subdev;
1602
1603
1604 if (v4l2_get_subdevdata(sd) == NULL)
1605 return;
1606
1607 v4l2_device_unregister_subdev(sd);
1608 media_entity_cleanup(&sd->entity);
1609 v4l2_ctrl_handler_free(&camif->ctrl_handler);
1610 v4l2_set_subdevdata(sd, NULL);
1611}
1612
1613int s3c_camif_set_defaults(struct camif_dev *camif)
1614{
1615 unsigned int ip_rev = camif->variant->ip_revision;
1616 int i;
1617
1618 for (i = 0; i < CAMIF_VP_NUM; i++) {
1619 struct camif_vp *vp = &camif->vp[i];
1620 struct camif_frame *f = &vp->out_frame;
1621
1622 vp->camif = camif;
1623 vp->id = i;
1624 vp->offset = camif->variant->vp_offset;
1625
1626 if (ip_rev == S3C244X_CAMIF_IP_REV)
1627 vp->fmt_flags = i ? FMT_FL_S3C24XX_PREVIEW :
1628 FMT_FL_S3C24XX_CODEC;
1629 else
1630 vp->fmt_flags = FMT_FL_S3C64XX;
1631
1632 vp->out_fmt = s3c_camif_find_format(vp, NULL, 0);
1633 BUG_ON(vp->out_fmt == NULL);
1634
1635 memset(f, 0, sizeof(*f));
1636 f->f_width = CAMIF_DEF_WIDTH;
1637 f->f_height = CAMIF_DEF_HEIGHT;
1638 f->rect.width = CAMIF_DEF_WIDTH;
1639 f->rect.height = CAMIF_DEF_HEIGHT;
1640
1641
1642 vp->scaler.enable = 1;
1643
1644 vp->payload = (f->f_width * f->f_height *
1645 vp->out_fmt->depth) / 8;
1646 }
1647
1648 memset(&camif->mbus_fmt, 0, sizeof(camif->mbus_fmt));
1649 camif->mbus_fmt.width = CAMIF_DEF_WIDTH;
1650 camif->mbus_fmt.height = CAMIF_DEF_HEIGHT;
1651 camif->mbus_fmt.code = camif_mbus_formats[0];
1652
1653 memset(&camif->camif_crop, 0, sizeof(camif->camif_crop));
1654 camif->camif_crop.width = CAMIF_DEF_WIDTH;
1655 camif->camif_crop.height = CAMIF_DEF_HEIGHT;
1656
1657 return 0;
1658}
1659
