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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / media / video / s5p-fimc / fimc-capture.c
blob8dab7fd81fd51d2c355ed79836d1d3df3add856d
1 /*
2 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
3 *
4 * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd.
5 * Author: Sylwester Nawrocki, <s.nawrocki@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/errno.h>
16 #include <linux/bug.h>
17 #include <linux/interrupt.h>
18 #include <linux/device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/list.h>
21 #include <linux/slab.h>
22
23 #include <linux/videodev2.h>
24 #include <media/v4l2-device.h>
25 #include <media/v4l2-ioctl.h>
26 #include <media/v4l2-mem2mem.h>
27 #include <media/videobuf2-core.h>
28 #include <media/videobuf2-dma-contig.h>
29
30 #include "fimc-mdevice.h"
31 #include "fimc-core.h"
32
33 static int fimc_init_capture(struct fimc_dev *fimc)
34 {
35 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
36 struct fimc_sensor_info *sensor;
37 unsigned long flags;
38 int ret = 0;
39
40 if (fimc->pipeline.sensor == NULL || ctx == NULL)
41 return -ENXIO;
42 if (ctx->s_frame.fmt == NULL)
43 return -EINVAL;
44
45 sensor = v4l2_get_subdev_hostdata(fimc->pipeline.sensor);
46
47 spin_lock_irqsave(&fimc->slock, flags);
48 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
49 fimc_set_yuv_order(ctx);
50
51 fimc_hw_set_camera_polarity(fimc, sensor->pdata);
52 fimc_hw_set_camera_type(fimc, sensor->pdata);
53 fimc_hw_set_camera_source(fimc, sensor->pdata);
54 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
55
56 ret = fimc_set_scaler_info(ctx);
57 if (!ret) {
58 fimc_hw_set_input_path(ctx);
59 fimc_hw_set_prescaler(ctx);
60 fimc_hw_set_mainscaler(ctx);
61 fimc_hw_set_target_format(ctx);
62 fimc_hw_set_rotation(ctx);
63 fimc_hw_set_effect(ctx, false);
64 fimc_hw_set_output_path(ctx);
65 fimc_hw_set_out_dma(ctx);
66 if (fimc->variant->has_alpha)
67 fimc_hw_set_rgb_alpha(ctx);
68 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
69 }
70 spin_unlock_irqrestore(&fimc->slock, flags);
71 return ret;
72 }
73
74 static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
75 {
76 struct fimc_vid_cap *cap = &fimc->vid_cap;
77 struct fimc_vid_buffer *buf;
78 unsigned long flags;
79 bool streaming;
80
81 spin_lock_irqsave(&fimc->slock, flags);
82 streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM);
83
84 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT |
85 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM);
86 if (!suspend)
87 fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED);
88
89 /* Release unused buffers */
90 while (!suspend && !list_empty(&cap->pending_buf_q)) {
91 buf = fimc_pending_queue_pop(cap);
92 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
93 }
94 /* If suspending put unused buffers onto pending queue */
95 while (!list_empty(&cap->active_buf_q)) {
96 buf = fimc_active_queue_pop(cap);
97 if (suspend)
98 fimc_pending_queue_add(cap, buf);
99 else
100 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
101 }
102 set_bit(ST_CAPT_SUSPENDED, &fimc->state);
103
104 fimc_hw_reset(fimc);
105 cap->buf_index = 0;
106
107 spin_unlock_irqrestore(&fimc->slock, flags);
108
109 if (streaming)
110 return fimc_pipeline_s_stream(fimc, 0);
111 else
112 return 0;
113 }
114
115 static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend)
116 {
117 unsigned long flags;
118
119 if (!fimc_capture_active(fimc))
120 return 0;
121
122 spin_lock_irqsave(&fimc->slock, flags);
123 set_bit(ST_CAPT_SHUT, &fimc->state);
124 fimc_deactivate_capture(fimc);
125 spin_unlock_irqrestore(&fimc->slock, flags);
126
127 wait_event_timeout(fimc->irq_queue,
128 !test_bit(ST_CAPT_SHUT, &fimc->state),
129 (2*HZ/10)); /* 200 ms */
130
131 return fimc_capture_state_cleanup(fimc, suspend);
132 }
133
134 /**
135 * fimc_capture_config_update - apply the camera interface configuration
136 *
137 * To be called from within the interrupt handler with fimc.slock
138 * spinlock held. It updates the camera pixel crop, rotation and
139 * image flip in H/W.
140 */
141 int fimc_capture_config_update(struct fimc_ctx *ctx)
142 {
143 struct fimc_dev *fimc = ctx->fimc_dev;
144 int ret;
145
146 if (!test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
147 return 0;
148
149 spin_lock(&ctx->slock);
150 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
151 ret = fimc_set_scaler_info(ctx);
152 if (ret == 0) {
153 fimc_hw_set_prescaler(ctx);
154 fimc_hw_set_mainscaler(ctx);
155 fimc_hw_set_target_format(ctx);
156 fimc_hw_set_rotation(ctx);
157 fimc_prepare_dma_offset(ctx, &ctx->d_frame);
158 fimc_hw_set_out_dma(ctx);
159 if (fimc->variant->has_alpha)
160 fimc_hw_set_rgb_alpha(ctx);
161 clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
162 }
163 spin_unlock(&ctx->slock);
164 return ret;
165 }
166
167 static int start_streaming(struct vb2_queue *q, unsigned int count)
168 {
169 struct fimc_ctx *ctx = q->drv_priv;
170 struct fimc_dev *fimc = ctx->fimc_dev;
171 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
172 int min_bufs;
173 int ret;
174
175 vid_cap->frame_count = 0;
176
177 ret = fimc_init_capture(fimc);
178 if (ret)
179 goto error;
180
181 set_bit(ST_CAPT_PEND, &fimc->state);
182
183 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
184
185 if (vid_cap->active_buf_cnt >= min_bufs &&
186 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
187 fimc_activate_capture(ctx);
188
189 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
190 fimc_pipeline_s_stream(fimc, 1);
191 }
192
193 return 0;
194 error:
195 fimc_capture_state_cleanup(fimc, false);
196 return ret;
197 }
198
199 static int stop_streaming(struct vb2_queue *q)
200 {
201 struct fimc_ctx *ctx = q->drv_priv;
202 struct fimc_dev *fimc = ctx->fimc_dev;
203
204 if (!fimc_capture_active(fimc))
205 return -EINVAL;
206
207 return fimc_stop_capture(fimc, false);
208 }
209
210 int fimc_capture_suspend(struct fimc_dev *fimc)
211 {
212 bool suspend = fimc_capture_busy(fimc);
213
214 int ret = fimc_stop_capture(fimc, suspend);
215 if (ret)
216 return ret;
217 return fimc_pipeline_shutdown(fimc);
218 }
219
220 static void buffer_queue(struct vb2_buffer *vb);
221
222 int fimc_capture_resume(struct fimc_dev *fimc)
223 {
224 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
225 struct fimc_vid_buffer *buf;
226 int i;
227
228 if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state))
229 return 0;
230
231 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
232 vid_cap->buf_index = 0;
233 fimc_pipeline_initialize(fimc, &fimc->vid_cap.vfd->entity,
234 false);
235 fimc_init_capture(fimc);
236
237 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
238
239 for (i = 0; i < vid_cap->reqbufs_count; i++) {
240 if (list_empty(&vid_cap->pending_buf_q))
241 break;
242 buf = fimc_pending_queue_pop(vid_cap);
243 buffer_queue(&buf->vb);
244 }
245 return 0;
246
247 }
248
249 static unsigned int get_plane_size(struct fimc_frame *fr, unsigned int plane)
250 {
251 if (!fr || plane >= fr->fmt->memplanes)
252 return 0;
253 return fr->f_width * fr->f_height * fr->fmt->depth[plane] / 8;
254 }
255
256 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
257 unsigned int *num_buffers, unsigned int *num_planes,
258 unsigned int sizes[], void *allocators[])
259 {
260 struct fimc_ctx *ctx = vq->drv_priv;
261 struct fimc_fmt *fmt = ctx->d_frame.fmt;
262 int i;
263
264 if (!fmt)
265 return -EINVAL;
266
267 *num_planes = fmt->memplanes;
268
269 for (i = 0; i < fmt->memplanes; i++) {
270 sizes[i] = get_plane_size(&ctx->d_frame, i);
271 allocators[i] = ctx->fimc_dev->alloc_ctx;
272 }
273
274 return 0;
275 }
276
277 static int buffer_prepare(struct vb2_buffer *vb)
278 {
279 struct vb2_queue *vq = vb->vb2_queue;
280 struct fimc_ctx *ctx = vq->drv_priv;
281 int i;
282
283 if (ctx->d_frame.fmt == NULL)
284 return -EINVAL;
285
286 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
287 unsigned long size = ctx->d_frame.payload[i];
288
289 if (vb2_plane_size(vb, i) < size) {
290 v4l2_err(ctx->fimc_dev->vid_cap.vfd,
291 "User buffer too small (%ld < %ld)\n",
292 vb2_plane_size(vb, i), size);
293 return -EINVAL;
294 }
295 vb2_set_plane_payload(vb, i, size);
296 }
297
298 return 0;
299 }
300
301 static void buffer_queue(struct vb2_buffer *vb)
302 {
303 struct fimc_vid_buffer *buf
304 = container_of(vb, struct fimc_vid_buffer, vb);
305 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
306 struct fimc_dev *fimc = ctx->fimc_dev;
307 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
308 unsigned long flags;
309 int min_bufs;
310
311 spin_lock_irqsave(&fimc->slock, flags);
312 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
313
314 if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) &&
315 !test_bit(ST_CAPT_STREAM, &fimc->state) &&
316 vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
317 /* Setup the buffer directly for processing. */
318 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
319 vid_cap->buf_index;
320
321 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
322 buf->index = vid_cap->buf_index;
323 fimc_active_queue_add(vid_cap, buf);
324
325 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
326 vid_cap->buf_index = 0;
327 } else {
328 fimc_pending_queue_add(vid_cap, buf);
329 }
330
331 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
332
333
334 if (vb2_is_streaming(&vid_cap->vbq) &&
335 vid_cap->active_buf_cnt >= min_bufs &&
336 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
337 fimc_activate_capture(ctx);
338 spin_unlock_irqrestore(&fimc->slock, flags);
339
340 if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state))
341 fimc_pipeline_s_stream(fimc, 1);
342 return;
343 }
344 spin_unlock_irqrestore(&fimc->slock, flags);
345 }
346
347 static void fimc_lock(struct vb2_queue *vq)
348 {
349 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
350 mutex_lock(&ctx->fimc_dev->lock);
351 }
352
353 static void fimc_unlock(struct vb2_queue *vq)
354 {
355 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
356 mutex_unlock(&ctx->fimc_dev->lock);
357 }
358
359 static struct vb2_ops fimc_capture_qops = {
360 .queue_setup = queue_setup,
361 .buf_prepare = buffer_prepare,
362 .buf_queue = buffer_queue,
363 .wait_prepare = fimc_unlock,
364 .wait_finish = fimc_lock,
365 .start_streaming = start_streaming,
366 .stop_streaming = stop_streaming,
367 };
368
369 /**
370 * fimc_capture_ctrls_create - initialize the control handler
371 * Initialize the capture video node control handler and fill it
372 * with the FIMC controls. Inherit any sensor's controls if the
373 * 'user_subdev_api' flag is false (default behaviour).
374 * This function need to be called with the graph mutex held.
375 */
376 int fimc_capture_ctrls_create(struct fimc_dev *fimc)
377 {
378 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
379 int ret;
380
381 if (WARN_ON(vid_cap->ctx == NULL))
382 return -ENXIO;
383 if (vid_cap->ctx->ctrls_rdy)
384 return 0;
385
386 ret = fimc_ctrls_create(vid_cap->ctx);
387 if (ret || vid_cap->user_subdev_api)
388 return ret;
389
390 return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrl_handler,
391 fimc->pipeline.sensor->ctrl_handler);
392 }
393
394 static int fimc_capture_set_default_format(struct fimc_dev *fimc);
395
396 static int fimc_capture_open(struct file *file)
397 {
398 struct fimc_dev *fimc = video_drvdata(file);
399 int ret = v4l2_fh_open(file);
400
401 if (ret)
402 return ret;
403
404 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
405
406 /* Return if the corresponding video mem2mem node is already opened. */
407 if (fimc_m2m_active(fimc))
408 return -EBUSY;
409
410 set_bit(ST_CAPT_BUSY, &fimc->state);
411 pm_runtime_get_sync(&fimc->pdev->dev);
412
413 if (++fimc->vid_cap.refcnt == 1) {
414 ret = fimc_pipeline_initialize(fimc,
415 &fimc->vid_cap.vfd->entity, true);
416 if (ret < 0) {
417 dev_err(&fimc->pdev->dev,
418 "Video pipeline initialization failed\n");
419 pm_runtime_put_sync(&fimc->pdev->dev);
420 fimc->vid_cap.refcnt--;
421 v4l2_fh_release(file);
422 clear_bit(ST_CAPT_BUSY, &fimc->state);
423 return ret;
424 }
425 ret = fimc_capture_ctrls_create(fimc);
426
427 if (!ret && !fimc->vid_cap.user_subdev_api)
428 ret = fimc_capture_set_default_format(fimc);
429 }
430 return ret;
431 }
432
433 static int fimc_capture_close(struct file *file)
434 {
435 struct fimc_dev *fimc = video_drvdata(file);
436
437 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
438
439 if (--fimc->vid_cap.refcnt == 0) {
440 clear_bit(ST_CAPT_BUSY, &fimc->state);
441 fimc_stop_capture(fimc, false);
442 fimc_pipeline_shutdown(fimc);
443 clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
444 }
445
446 pm_runtime_put(&fimc->pdev->dev);
447
448 if (fimc->vid_cap.refcnt == 0) {
449 vb2_queue_release(&fimc->vid_cap.vbq);
450 fimc_ctrls_delete(fimc->vid_cap.ctx);
451 }
452 return v4l2_fh_release(file);
453 }
454
455 static unsigned int fimc_capture_poll(struct file *file,
456 struct poll_table_struct *wait)
457 {
458 struct fimc_dev *fimc = video_drvdata(file);
459
460 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
461 }
462
463 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
464 {
465 struct fimc_dev *fimc = video_drvdata(file);
466
467 return vb2_mmap(&fimc->vid_cap.vbq, vma);
468 }
469
470 static const struct v4l2_file_operations fimc_capture_fops = {
471 .owner = THIS_MODULE,
472 .open = fimc_capture_open,
473 .release = fimc_capture_close,
474 .poll = fimc_capture_poll,
475 .unlocked_ioctl = video_ioctl2,
476 .mmap = fimc_capture_mmap,
477 };
478
479 /*
480 * Format and crop negotiation helpers
481 */
482
483 static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
484 u32 *width, u32 *height,
485 u32 *code, u32 *fourcc, int pad)
486 {
487 bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
488 struct fimc_dev *fimc = ctx->fimc_dev;
489 struct samsung_fimc_variant *var = fimc->variant;
490 struct fimc_pix_limit *pl = var->pix_limit;
491 struct fimc_frame *dst = &ctx->d_frame;
492 u32 depth, min_w, max_w, min_h, align_h = 3;
493 u32 mask = FMT_FLAGS_CAM;
494 struct fimc_fmt *ffmt;
495
496 /* Color conversion from/to JPEG is not supported */
497 if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
498 fimc_fmt_is_jpeg(ctx->s_frame.fmt->color))
499 *code = V4L2_MBUS_FMT_JPEG_1X8;
500
501 if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
502 mask |= FMT_FLAGS_M2M;
503
504 ffmt = fimc_find_format(fourcc, code, mask, 0);
505 if (WARN_ON(!ffmt))
506 return NULL;
507 if (code)
508 *code = ffmt->mbus_code;
509 if (fourcc)
510 *fourcc = ffmt->fourcc;
511
512 if (pad == FIMC_SD_PAD_SINK) {
513 max_w = fimc_fmt_is_jpeg(ffmt->color) ?
514 pl->scaler_dis_w : pl->scaler_en_w;
515 /* Apply the camera input interface pixel constraints */
516 v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
517 height, max_t(u32, *height, 32),
518 FIMC_CAMIF_MAX_HEIGHT,
519 fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1,
520 0);
521 return ffmt;
522 }
523 /* Can't scale or crop in transparent (JPEG) transfer mode */
524 if (fimc_fmt_is_jpeg(ffmt->color)) {
525 *width = ctx->s_frame.f_width;
526 *height = ctx->s_frame.f_height;
527 return ffmt;
528 }
529 /* Apply the scaler and the output DMA constraints */
530 max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w;
531 min_w = ctx->state & FIMC_DST_CROP ? dst->width : var->min_out_pixsize;
532 min_h = ctx->state & FIMC_DST_CROP ? dst->height : var->min_out_pixsize;
533 if (var->min_vsize_align == 1 && !rotation)
534 align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1;
535
536 depth = fimc_get_format_depth(ffmt);
537 v4l_bound_align_image(width, min_w, max_w,
538 ffs(var->min_out_pixsize) - 1,
539 height, min_h, FIMC_CAMIF_MAX_HEIGHT,
540 align_h,
541 64/(ALIGN(depth, 8)));
542
543 dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d",
544 pad, code ? *code : 0, *width, *height,
545 dst->f_width, dst->f_height);
546
547 return ffmt;
548 }
549
550 static void fimc_capture_try_crop(struct fimc_ctx *ctx, struct v4l2_rect *r,
551 int pad)
552 {
553 bool rotate = ctx->rotation == 90 || ctx->rotation == 270;
554 struct fimc_dev *fimc = ctx->fimc_dev;
555 struct samsung_fimc_variant *var = fimc->variant;
556 struct fimc_pix_limit *pl = var->pix_limit;
557 struct fimc_frame *sink = &ctx->s_frame;
558 u32 max_w, max_h, min_w = 0, min_h = 0, min_sz;
559 u32 align_sz = 0, align_h = 4;
560 u32 max_sc_h, max_sc_v;
561
562 /* In JPEG transparent transfer mode cropping is not supported */
563 if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) {
564 r->width = sink->f_width;
565 r->height = sink->f_height;
566 r->left = r->top = 0;
567 return;
568 }
569 if (pad == FIMC_SD_PAD_SOURCE) {
570 if (ctx->rotation != 90 && ctx->rotation != 270)
571 align_h = 1;
572 max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3));
573 max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1));
574 min_sz = var->min_out_pixsize;
575 } else {
576 u32 depth = fimc_get_format_depth(sink->fmt);
577 align_sz = 64/ALIGN(depth, 8);
578 min_sz = var->min_inp_pixsize;
579 min_w = min_h = min_sz;
580 max_sc_h = max_sc_v = 1;
581 }
582 /*
583 * For the crop rectangle at source pad the following constraints
584 * must be met:
585 * - it must fit in the sink pad format rectangle (f_width/f_height);
586 * - maximum downscaling ratio is 64;
587 * - maximum crop size depends if the rotator is used or not;
588 * - the sink pad format width/height must be 4 multiple of the
589 * prescaler ratios determined by sink pad size and source pad crop,
590 * the prescaler ratio is returned by fimc_get_scaler_factor().
591 */
592 max_w = min_t(u32,
593 rotate ? pl->out_rot_en_w : pl->out_rot_dis_w,
594 rotate ? sink->f_height : sink->f_width);
595 max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height);
596 if (pad == FIMC_SD_PAD_SOURCE) {
597 min_w = min_t(u32, max_w, sink->f_width / max_sc_h);
598 min_h = min_t(u32, max_h, sink->f_height / max_sc_v);
599 if (rotate) {
600 swap(max_sc_h, max_sc_v);
601 swap(min_w, min_h);
602 }
603 }
604 v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1,
605 &r->height, min_h, max_h, align_h,
606 align_sz);
607 /* Adjust left/top if cropping rectangle is out of bounds */
608 r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width);
609 r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height);
610 r->left = round_down(r->left, var->hor_offs_align);
611
612 dbg("pad%d: (%d,%d)/%dx%d, sink fmt: %dx%d",
613 pad, r->left, r->top, r->width, r->height,
614 sink->f_width, sink->f_height);
615 }
616
617 /*
618 * The video node ioctl operations
619 */
620 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
621 struct v4l2_capability *cap)
622 {
623 struct fimc_dev *fimc = video_drvdata(file);
624
625 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
626 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
627 cap->bus_info[0] = 0;
628 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
629
630 return 0;
631 }
632
633 static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
634 struct v4l2_fmtdesc *f)
635 {
636 struct fimc_fmt *fmt;
637
638 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M,
639 f->index);
640 if (!fmt)
641 return -EINVAL;
642 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
643 f->pixelformat = fmt->fourcc;
644 if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8)
645 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
646 return 0;
647 }
648
649 /**
650 * fimc_pipeline_try_format - negotiate and/or set formats at pipeline
651 * elements
652 * @ctx: FIMC capture context
653 * @tfmt: media bus format to try/set on subdevs
654 * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output)
655 * @set: true to set format on subdevs, false to try only
656 */
657 static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
658 struct v4l2_mbus_framefmt *tfmt,
659 struct fimc_fmt **fmt_id,
660 bool set)
661 {
662 struct fimc_dev *fimc = ctx->fimc_dev;
663 struct v4l2_subdev *sd = fimc->pipeline.sensor;
664 struct v4l2_subdev *csis = fimc->pipeline.csis;
665 struct v4l2_subdev_format sfmt;
666 struct v4l2_mbus_framefmt *mf = &sfmt.format;
667 struct fimc_fmt *ffmt = NULL;
668 int ret, i = 0;
669
670 if (WARN_ON(!sd || !tfmt))
671 return -EINVAL;
672
673 memset(&sfmt, 0, sizeof(sfmt));
674 sfmt.format = *tfmt;
675
676 sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY;
677 while (1) {
678 ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL,
679 FMT_FLAGS_CAM, i++);
680 if (ffmt == NULL) {
681 /*
682 * Notify user-space if common pixel code for
683 * host and sensor does not exist.
684 */
685 return -EINVAL;
686 }
687 mf->code = tfmt->code = ffmt->mbus_code;
688
689 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt);
690 if (ret)
691 return ret;
692 if (mf->code != tfmt->code) {
693 mf->code = 0;
694 continue;
695 }
696 if (mf->width != tfmt->width || mf->height != tfmt->height) {
697 u32 fcc = ffmt->fourcc;
698 tfmt->width = mf->width;
699 tfmt->height = mf->height;
700 ffmt = fimc_capture_try_format(ctx,
701 &tfmt->width, &tfmt->height,
702 NULL, &fcc, FIMC_SD_PAD_SOURCE);
703 if (ffmt && ffmt->mbus_code)
704 mf->code = ffmt->mbus_code;
705 if (mf->width != tfmt->width ||
706 mf->height != tfmt->height)
707 continue;
708 tfmt->code = mf->code;
709 }
710 if (csis)
711 ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
712
713 if (mf->code == tfmt->code &&
714 mf->width == tfmt->width && mf->height == tfmt->height)
715 break;
716 }
717
718 if (fmt_id && ffmt)
719 *fmt_id = ffmt;
720 *tfmt = *mf;
721
722 dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt);
723 return 0;
724 }
725
726 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
727 struct v4l2_format *f)
728 {
729 struct fimc_dev *fimc = video_drvdata(file);
730 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
731
732 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
733 return -EINVAL;
734
735 return fimc_fill_format(&ctx->d_frame, f);
736 }
737
738 static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
739 struct v4l2_format *f)
740 {
741 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
742 struct fimc_dev *fimc = video_drvdata(file);
743 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
744 struct v4l2_mbus_framefmt mf;
745 struct fimc_fmt *ffmt = NULL;
746
747 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
748 return -EINVAL;
749
750 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
751 fimc_capture_try_format(ctx, &pix->width, &pix->height,
752 NULL, &pix->pixelformat,
753 FIMC_SD_PAD_SINK);
754 ctx->s_frame.f_width = pix->width;
755 ctx->s_frame.f_height = pix->height;
756 }
757 ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
758 NULL, &pix->pixelformat,
759 FIMC_SD_PAD_SOURCE);
760 if (!ffmt)
761 return -EINVAL;
762
763 if (!fimc->vid_cap.user_subdev_api) {
764 mf.width = pix->width;
765 mf.height = pix->height;
766 mf.code = ffmt->mbus_code;
767 fimc_md_graph_lock(fimc);
768 fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
769 fimc_md_graph_unlock(fimc);
770
771 pix->width = mf.width;
772 pix->height = mf.height;
773 if (ffmt)
774 pix->pixelformat = ffmt->fourcc;
775 }
776
777 fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
778 return 0;
779 }
780
781 static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg)
782 {
783 ctx->scaler.enabled = !jpeg;
784 fimc_ctrls_activate(ctx, !jpeg);
785
786 if (jpeg)
787 set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
788 else
789 clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state);
790 }
791
792 static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f)
793 {
794 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
795 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
796 struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf;
797 struct fimc_frame *ff = &ctx->d_frame;
798 struct fimc_fmt *s_fmt = NULL;
799 int ret, i;
800
801 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
802 return -EINVAL;
803 if (vb2_is_busy(&fimc->vid_cap.vbq))
804 return -EBUSY;
805
806 /* Pre-configure format at camera interface input, for JPEG only */
807 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
808 fimc_capture_try_format(ctx, &pix->width, &pix->height,
809 NULL, &pix->pixelformat,
810 FIMC_SD_PAD_SINK);
811 ctx->s_frame.f_width = pix->width;
812 ctx->s_frame.f_height = pix->height;
813 }
814 /* Try the format at the scaler and the DMA output */
815 ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
816 NULL, &pix->pixelformat,
817 FIMC_SD_PAD_SOURCE);
818 if (!ff->fmt)
819 return -EINVAL;
820
821 /* Update RGB Alpha control state and value range */
822 fimc_alpha_ctrl_update(ctx);
823
824 /* Try to match format at the host and the sensor */
825 if (!fimc->vid_cap.user_subdev_api) {
826 mf->code = ff->fmt->mbus_code;
827 mf->width = pix->width;
828 mf->height = pix->height;
829
830 fimc_md_graph_lock(fimc);
831 ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true);
832 fimc_md_graph_unlock(fimc);
833 if (ret)
834 return ret;
835 pix->width = mf->width;
836 pix->height = mf->height;
837 }
838 fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
839 for (i = 0; i < ff->fmt->colplanes; i++)
840 ff->payload[i] =
841 (pix->width * pix->height * ff->fmt->depth[i]) / 8;
842
843 set_frame_bounds(ff, pix->width, pix->height);
844 /* Reset the composition rectangle if not yet configured */
845 if (!(ctx->state & FIMC_DST_CROP))
846 set_frame_crop(ff, 0, 0, pix->width, pix->height);
847
848 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color));
849
850 /* Reset cropping and set format at the camera interface input */
851 if (!fimc->vid_cap.user_subdev_api) {
852 ctx->s_frame.fmt = s_fmt;
853 set_frame_bounds(&ctx->s_frame, pix->width, pix->height);
854 set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height);
855 }
856
857 return ret;
858 }
859
860 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
861 struct v4l2_format *f)
862 {
863 struct fimc_dev *fimc = video_drvdata(file);
864
865 return fimc_capture_set_format(fimc, f);
866 }
867
868 static int fimc_cap_enum_input(struct file *file, void *priv,
869 struct v4l2_input *i)
870 {
871 struct fimc_dev *fimc = video_drvdata(file);
872 struct v4l2_subdev *sd = fimc->pipeline.sensor;
873
874 if (i->index != 0)
875 return -EINVAL;
876
877 i->type = V4L2_INPUT_TYPE_CAMERA;
878 if (sd)
879 strlcpy(i->name, sd->name, sizeof(i->name));
880 return 0;
881 }
882
883 static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i)
884 {
885 return i == 0 ? i : -EINVAL;
886 }
887
888 static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i)
889 {
890 *i = 0;
891 return 0;
892 }
893
894 /**
895 * fimc_pipeline_validate - check for formats inconsistencies
896 * between source and sink pad of each link
897 *
898 * Return 0 if all formats match or -EPIPE otherwise.
899 */
900 static int fimc_pipeline_validate(struct fimc_dev *fimc)
901 {
902 struct v4l2_subdev_format sink_fmt, src_fmt;
903 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
904 struct v4l2_subdev *sd;
905 struct media_pad *pad;
906 int ret;
907
908 /* Start with the video capture node pad */
909 pad = media_entity_remote_source(&vid_cap->vd_pad);
910 if (pad == NULL)
911 return -EPIPE;
912 /* FIMC.{N} subdevice */
913 sd = media_entity_to_v4l2_subdev(pad->entity);
914
915 while (1) {
916 /* Retrieve format at the sink pad */
917 pad = &sd->entity.pads[0];
918 if (!(pad->flags & MEDIA_PAD_FL_SINK))
919 break;
920 /* Don't call FIMC subdev operation to avoid nested locking */
921 if (sd == fimc->vid_cap.subdev) {
922 struct fimc_frame *ff = &vid_cap->ctx->s_frame;
923 sink_fmt.format.width = ff->f_width;
924 sink_fmt.format.height = ff->f_height;
925 sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0;
926 } else {
927 sink_fmt.pad = pad->index;
928 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
929 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
930 if (ret < 0 && ret != -ENOIOCTLCMD)
931 return -EPIPE;
932 }
933 /* Retrieve format at the source pad */
934 pad = media_entity_remote_source(pad);
935 if (pad == NULL ||
936 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
937 break;
938
939 sd = media_entity_to_v4l2_subdev(pad->entity);
940 src_fmt.pad = pad->index;
941 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
942 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
943 if (ret < 0 && ret != -ENOIOCTLCMD)
944 return -EPIPE;
945
946 if (src_fmt.format.width != sink_fmt.format.width ||
947 src_fmt.format.height != sink_fmt.format.height ||
948 src_fmt.format.code != sink_fmt.format.code)
949 return -EPIPE;
950 }
951 return 0;
952 }
953
954 static int fimc_cap_streamon(struct file *file, void *priv,
955 enum v4l2_buf_type type)
956 {
957 struct fimc_dev *fimc = video_drvdata(file);
958 struct fimc_pipeline *p = &fimc->pipeline;
959 int ret;
960
961 if (fimc_capture_active(fimc))
962 return -EBUSY;
963
964 media_entity_pipeline_start(&p->sensor->entity, p->pipe);
965
966 if (fimc->vid_cap.user_subdev_api) {
967 ret = fimc_pipeline_validate(fimc);
968 if (ret)
969 return ret;
970 }
971 return vb2_streamon(&fimc->vid_cap.vbq, type);
972 }
973
974 static int fimc_cap_streamoff(struct file *file, void *priv,
975 enum v4l2_buf_type type)
976 {
977 struct fimc_dev *fimc = video_drvdata(file);
978 struct v4l2_subdev *sd = fimc->pipeline.sensor;
979 int ret;
980
981 ret = vb2_streamoff(&fimc->vid_cap.vbq, type);
982 if (ret == 0)
983 media_entity_pipeline_stop(&sd->entity);
984 return ret;
985 }
986
987 static int fimc_cap_reqbufs(struct file *file, void *priv,
988 struct v4l2_requestbuffers *reqbufs)
989 {
990 struct fimc_dev *fimc = video_drvdata(file);
991 int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs);
992
993 if (!ret)
994 fimc->vid_cap.reqbufs_count = reqbufs->count;
995 return ret;
996 }
997
998 static int fimc_cap_querybuf(struct file *file, void *priv,
999 struct v4l2_buffer *buf)
1000 {
1001 struct fimc_dev *fimc = video_drvdata(file);
1002
1003 return vb2_querybuf(&fimc->vid_cap.vbq, buf);
1004 }
1005
1006 static int fimc_cap_qbuf(struct file *file, void *priv,
1007 struct v4l2_buffer *buf)
1008 {
1009 struct fimc_dev *fimc = video_drvdata(file);
1010
1011 return vb2_qbuf(&fimc->vid_cap.vbq, buf);
1012 }
1013
1014 static int fimc_cap_dqbuf(struct file *file, void *priv,
1015 struct v4l2_buffer *buf)
1016 {
1017 struct fimc_dev *fimc = video_drvdata(file);
1018
1019 return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK);
1020 }
1021
1022 static int fimc_cap_cropcap(struct file *file, void *fh,
1023 struct v4l2_cropcap *cr)
1024 {
1025 struct fimc_dev *fimc = video_drvdata(file);
1026 struct fimc_frame *f = &fimc->vid_cap.ctx->s_frame;
1027
1028 if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1029 return -EINVAL;
1030
1031 cr->bounds.left = 0;
1032 cr->bounds.top = 0;
1033 cr->bounds.width = f->o_width;
1034 cr->bounds.height = f->o_height;
1035 cr->defrect = cr->bounds;
1036
1037 return 0;
1038 }
1039
1040 static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
1041 {
1042 struct fimc_dev *fimc = video_drvdata(file);
1043 struct fimc_frame *f = &fimc->vid_cap.ctx->s_frame;
1044
1045 cr->c.left = f->offs_h;
1046 cr->c.top = f->offs_v;
1047 cr->c.width = f->width;
1048 cr->c.height = f->height;
1049
1050 return 0;
1051 }
1052
1053 static int fimc_cap_s_crop(struct file *file, void *fh, struct v4l2_crop *cr)
1054 {
1055 struct fimc_dev *fimc = video_drvdata(file);
1056 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1057 struct fimc_frame *ff;
1058 unsigned long flags;
1059
1060 fimc_capture_try_crop(ctx, &cr->c, FIMC_SD_PAD_SINK);
1061 ff = &ctx->s_frame;
1062
1063 spin_lock_irqsave(&fimc->slock, flags);
1064 set_frame_crop(ff, cr->c.left, cr->c.top, cr->c.width, cr->c.height);
1065 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1066 spin_unlock_irqrestore(&fimc->slock, flags);
1067
1068 return 0;
1069 }
1070
1071 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
1072 .vidioc_querycap = fimc_vidioc_querycap_capture,
1073
1074 .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane,
1075 .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane,
1076 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
1077 .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane,
1078
1079 .vidioc_reqbufs = fimc_cap_reqbufs,
1080 .vidioc_querybuf = fimc_cap_querybuf,
1081
1082 .vidioc_qbuf = fimc_cap_qbuf,
1083 .vidioc_dqbuf = fimc_cap_dqbuf,
1084
1085 .vidioc_streamon = fimc_cap_streamon,
1086 .vidioc_streamoff = fimc_cap_streamoff,
1087
1088 .vidioc_g_crop = fimc_cap_g_crop,
1089 .vidioc_s_crop = fimc_cap_s_crop,
1090 .vidioc_cropcap = fimc_cap_cropcap,
1091
1092 .vidioc_enum_input = fimc_cap_enum_input,
1093 .vidioc_s_input = fimc_cap_s_input,
1094 .vidioc_g_input = fimc_cap_g_input,
1095 };
1096
1097 /* Capture subdev media entity operations */
1098 static int fimc_link_setup(struct media_entity *entity,
1099 const struct media_pad *local,
1100 const struct media_pad *remote, u32 flags)
1101 {
1102 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1103 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1104
1105 if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
1106 return -EINVAL;
1107
1108 if (WARN_ON(fimc == NULL))
1109 return 0;
1110
1111 dbg("%s --> %s, flags: 0x%x. input: 0x%x",
1112 local->entity->name, remote->entity->name, flags,
1113 fimc->vid_cap.input);
1114
1115 if (flags & MEDIA_LNK_FL_ENABLED) {
1116 if (fimc->vid_cap.input != 0)
1117 return -EBUSY;
1118 fimc->vid_cap.input = sd->grp_id;
1119 return 0;
1120 }
1121
1122 fimc->vid_cap.input = 0;
1123 return 0;
1124 }
1125
1126 static const struct media_entity_operations fimc_sd_media_ops = {
1127 .link_setup = fimc_link_setup,
1128 };
1129
1130 /**
1131 * fimc_sensor_notify - v4l2_device notification from a sensor subdev
1132 * @sd: pointer to a subdev generating the notification
1133 * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY
1134 * @arg: pointer to an u32 type integer that stores the frame payload value
1135 *
1136 * The End Of Frame notification sent by sensor subdev in its still capture
1137 * mode. If there is only a single VSYNC generated by the sensor at the
1138 * beginning of a frame transmission, FIMC does not issue the LastIrq
1139 * (end of frame) interrupt. And this notification is used to complete the
1140 * frame capture and returning a buffer to user-space. Subdev drivers should
1141 * call this notification from their last 'End of frame capture' interrupt.
1142 */
1143 void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
1144 void *arg)
1145 {
1146 struct fimc_sensor_info *sensor;
1147 struct fimc_vid_buffer *buf;
1148 struct fimc_md *fmd;
1149 struct fimc_dev *fimc;
1150 unsigned long flags;
1151
1152 if (sd == NULL)
1153 return;
1154
1155 sensor = v4l2_get_subdev_hostdata(sd);
1156 fmd = entity_to_fimc_mdev(&sd->entity);
1157
1158 spin_lock_irqsave(&fmd->slock, flags);
1159 fimc = sensor ? sensor->host : NULL;
1160
1161 if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY &&
1162 test_bit(ST_CAPT_PEND, &fimc->state)) {
1163 unsigned long irq_flags;
1164 spin_lock_irqsave(&fimc->slock, irq_flags);
1165 if (!list_empty(&fimc->vid_cap.active_buf_q)) {
1166 buf = list_entry(fimc->vid_cap.active_buf_q.next,
1167 struct fimc_vid_buffer, list);
1168 vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg));
1169 }
1170 fimc_capture_irq_handler(fimc, true);
1171 fimc_deactivate_capture(fimc);
1172 spin_unlock_irqrestore(&fimc->slock, irq_flags);
1173 }
1174 spin_unlock_irqrestore(&fmd->slock, flags);
1175 }
1176
1177 static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1178 struct v4l2_subdev_fh *fh,
1179 struct v4l2_subdev_mbus_code_enum *code)
1180 {
1181 struct fimc_fmt *fmt;
1182
1183 fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index);
1184 if (!fmt)
1185 return -EINVAL;
1186 code->code = fmt->mbus_code;
1187 return 0;
1188 }
1189
1190 static int fimc_subdev_get_fmt(struct v4l2_subdev *sd,
1191 struct v4l2_subdev_fh *fh,
1192 struct v4l2_subdev_format *fmt)
1193 {
1194 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1195 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1196 struct v4l2_mbus_framefmt *mf;
1197 struct fimc_frame *ff;
1198
1199 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1200 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1201 fmt->format = *mf;
1202 return 0;
1203 }
1204 mf = &fmt->format;
1205 mf->colorspace = V4L2_COLORSPACE_JPEG;
1206 ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame;
1207
1208 mutex_lock(&fimc->lock);
1209 /* The pixel code is same on both input and output pad */
1210 if (!WARN_ON(ctx->s_frame.fmt == NULL))
1211 mf->code = ctx->s_frame.fmt->mbus_code;
1212 mf->width = ff->f_width;
1213 mf->height = ff->f_height;
1214 mutex_unlock(&fimc->lock);
1215
1216 return 0;
1217 }
1218
1219 static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
1220 struct v4l2_subdev_fh *fh,
1221 struct v4l2_subdev_format *fmt)
1222 {
1223 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1224 struct v4l2_mbus_framefmt *mf = &fmt->format;
1225 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1226 struct fimc_frame *ff;
1227 struct fimc_fmt *ffmt;
1228
1229 dbg("pad%d: code: 0x%x, %dx%d",
1230 fmt->pad, mf->code, mf->width, mf->height);
1231
1232 if (fmt->pad == FIMC_SD_PAD_SOURCE &&
1233 vb2_is_busy(&fimc->vid_cap.vbq))
1234 return -EBUSY;
1235
1236 mutex_lock(&fimc->lock);
1237 ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height,
1238 &mf->code, NULL, fmt->pad);
1239 mutex_unlock(&fimc->lock);
1240 mf->colorspace = V4L2_COLORSPACE_JPEG;
1241
1242 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1243 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1244 *mf = fmt->format;
1245 return 0;
1246 }
1247 /* Update RGB Alpha control state and value range */
1248 fimc_alpha_ctrl_update(ctx);
1249
1250 fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color));
1251
1252 ff = fmt->pad == FIMC_SD_PAD_SINK ?
1253 &ctx->s_frame : &ctx->d_frame;
1254
1255 mutex_lock(&fimc->lock);
1256 set_frame_bounds(ff, mf->width, mf->height);
1257 fimc->vid_cap.mf = *mf;
1258 ff->fmt = ffmt;
1259
1260 /* Reset the crop rectangle if required. */
1261 if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_DST_CROP)))
1262 set_frame_crop(ff, 0, 0, mf->width, mf->height);
1263
1264 if (fmt->pad == FIMC_SD_PAD_SINK)
1265 ctx->state &= ~FIMC_DST_CROP;
1266 mutex_unlock(&fimc->lock);
1267 return 0;
1268 }
1269
1270 static int fimc_subdev_get_crop(struct v4l2_subdev *sd,
1271 struct v4l2_subdev_fh *fh,
1272 struct v4l2_subdev_crop *crop)
1273 {
1274 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1275 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1276 struct v4l2_rect *r = &crop->rect;
1277 struct fimc_frame *ff;
1278
1279 if (crop->which == V4L2_SUBDEV_FORMAT_TRY) {
1280 crop->rect = *v4l2_subdev_get_try_crop(fh, crop->pad);
1281 return 0;
1282 }
1283 ff = crop->pad == FIMC_SD_PAD_SINK ?
1284 &ctx->s_frame : &ctx->d_frame;
1285
1286 mutex_lock(&fimc->lock);
1287 r->left = ff->offs_h;
1288 r->top = ff->offs_v;
1289 r->width = ff->width;
1290 r->height = ff->height;
1291 mutex_unlock(&fimc->lock);
1292
1293 dbg("ff:%p, pad%d: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d",
1294 ff, crop->pad, r->left, r->top, r->width, r->height,
1295 ff->f_width, ff->f_height);
1296
1297 return 0;
1298 }
1299
1300 static int fimc_subdev_set_crop(struct v4l2_subdev *sd,
1301 struct v4l2_subdev_fh *fh,
1302 struct v4l2_subdev_crop *crop)
1303 {
1304 struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
1305 struct fimc_ctx *ctx = fimc->vid_cap.ctx;
1306 struct v4l2_rect *r = &crop->rect;
1307 struct fimc_frame *ff;
1308 unsigned long flags;
1309
1310 dbg("(%d,%d)/%dx%d", r->left, r->top, r->width, r->height);
1311
1312 ff = crop->pad == FIMC_SD_PAD_SOURCE ?
1313 &ctx->d_frame : &ctx->s_frame;
1314
1315 mutex_lock(&fimc->lock);
1316 fimc_capture_try_crop(ctx, r, crop->pad);
1317
1318 if (crop->which == V4L2_SUBDEV_FORMAT_TRY) {
1319 mutex_unlock(&fimc->lock);
1320 *v4l2_subdev_get_try_crop(fh, crop->pad) = *r;
1321 return 0;
1322 }
1323 spin_lock_irqsave(&fimc->slock, flags);
1324 set_frame_crop(ff, r->left, r->top, r->width, r->height);
1325 if (crop->pad == FIMC_SD_PAD_SOURCE)
1326 ctx->state |= FIMC_DST_CROP;
1327
1328 set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
1329 spin_unlock_irqrestore(&fimc->slock, flags);
1330
1331 dbg("pad%d: (%d,%d)/%dx%d", crop->pad, r->left, r->top,
1332 r->width, r->height);
1333
1334 mutex_unlock(&fimc->lock);
1335 return 0;
1336 }
1337
1338 static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = {
1339 .enum_mbus_code = fimc_subdev_enum_mbus_code,
1340 .get_fmt = fimc_subdev_get_fmt,
1341 .set_fmt = fimc_subdev_set_fmt,
1342 .get_crop = fimc_subdev_get_crop,
1343 .set_crop = fimc_subdev_set_crop,
1344 };
1345
1346 static struct v4l2_subdev_ops fimc_subdev_ops = {
1347 .pad = &fimc_subdev_pad_ops,
1348 };
1349
1350 static int fimc_create_capture_subdev(struct fimc_dev *fimc,
1351 struct v4l2_device *v4l2_dev)
1352 {
1353 struct v4l2_subdev *sd;
1354 int ret;
1355
1356 sd = kzalloc(sizeof(*sd), GFP_KERNEL);
1357 if (!sd)
1358 return -ENOMEM;
1359
1360 v4l2_subdev_init(sd, &fimc_subdev_ops);
1361 sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
1362 snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
1363
1364 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1365 fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1366 ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
1367 fimc->vid_cap.sd_pads, 0);
1368 if (ret)
1369 goto me_err;
1370 ret = v4l2_device_register_subdev(v4l2_dev, sd);
1371 if (ret)
1372 goto sd_err;
1373
1374 fimc->vid_cap.subdev = sd;
1375 v4l2_set_subdevdata(sd, fimc);
1376 sd->entity.ops = &fimc_sd_media_ops;
1377 return 0;
1378 sd_err:
1379 media_entity_cleanup(&sd->entity);
1380 me_err:
1381 kfree(sd);
1382 return ret;
1383 }
1384
1385 static void fimc_destroy_capture_subdev(struct fimc_dev *fimc)
1386 {
1387 struct v4l2_subdev *sd = fimc->vid_cap.subdev;
1388
1389 if (!sd)
1390 return;
1391 media_entity_cleanup(&sd->entity);
1392 v4l2_device_unregister_subdev(sd);
1393 kfree(sd);
1394 fimc->vid_cap.subdev = NULL;
1395 }
1396
1397 /* Set default format at the sensor and host interface */
1398 static int fimc_capture_set_default_format(struct fimc_dev *fimc)
1399 {
1400 struct v4l2_format fmt = {
1401 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
1402 .fmt.pix_mp = {
1403 .width = 640,
1404 .height = 480,
1405 .pixelformat = V4L2_PIX_FMT_YUYV,
1406 .field = V4L2_FIELD_NONE,
1407 .colorspace = V4L2_COLORSPACE_JPEG,
1408 },
1409 };
1410
1411 return fimc_capture_set_format(fimc, &fmt);
1412 }
1413
1414 /* fimc->lock must be already initialized */
1415 int fimc_register_capture_device(struct fimc_dev *fimc,
1416 struct v4l2_device *v4l2_dev)
1417 {
1418 struct video_device *vfd;
1419 struct fimc_vid_cap *vid_cap;
1420 struct fimc_ctx *ctx;
1421 struct vb2_queue *q;
1422 int ret = -ENOMEM;
1423
1424 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
1425 if (!ctx)
1426 return -ENOMEM;
1427
1428 ctx->fimc_dev = fimc;
1429 ctx->in_path = FIMC_CAMERA;
1430 ctx->out_path = FIMC_DMA;
1431 ctx->state = FIMC_CTX_CAP;
1432 ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1433 ctx->d_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
1434
1435 vfd = video_device_alloc();
1436 if (!vfd) {
1437 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
1438 goto err_vd_alloc;
1439 }
1440
1441 snprintf(vfd->name, sizeof(vfd->name), "%s.capture",
1442 dev_name(&fimc->pdev->dev));
1443
1444 vfd->fops = &fimc_capture_fops;
1445 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
1446 vfd->v4l2_dev = v4l2_dev;
1447 vfd->minor = -1;
1448 vfd->release = video_device_release;
1449 vfd->lock = &fimc->lock;
1450 video_set_drvdata(vfd, fimc);
1451
1452 vid_cap = &fimc->vid_cap;
1453 vid_cap->vfd = vfd;
1454 vid_cap->active_buf_cnt = 0;
1455 vid_cap->reqbufs_count = 0;
1456 vid_cap->refcnt = 0;
1457
1458 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
1459 INIT_LIST_HEAD(&vid_cap->active_buf_q);
1460 spin_lock_init(&ctx->slock);
1461 vid_cap->ctx = ctx;
1462
1463 q = &fimc->vid_cap.vbq;
1464 memset(q, 0, sizeof(*q));
1465 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1466 q->io_modes = VB2_MMAP | VB2_USERPTR;
1467 q->drv_priv = fimc->vid_cap.ctx;
1468 q->ops = &fimc_capture_qops;
1469 q->mem_ops = &vb2_dma_contig_memops;
1470 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
1471
1472 vb2_queue_init(q);
1473
1474 fimc->vid_cap.vd_pad.flags = MEDIA_PAD_FL_SINK;
1475 ret = media_entity_init(&vfd->entity, 1, &fimc->vid_cap.vd_pad, 0);
1476 if (ret)
1477 goto err_ent;
1478 ret = fimc_create_capture_subdev(fimc, v4l2_dev);
1479 if (ret)
1480 goto err_sd_reg;
1481
1482 vfd->ctrl_handler = &ctx->ctrl_handler;
1483 return 0;
1484
1485 err_sd_reg:
1486 media_entity_cleanup(&vfd->entity);
1487 err_ent:
1488 video_device_release(vfd);
1489 err_vd_alloc:
1490 kfree(ctx);
1491 return ret;
1492 }
1493
1494 void fimc_unregister_capture_device(struct fimc_dev *fimc)
1495 {
1496 struct video_device *vfd = fimc->vid_cap.vfd;
1497
1498 if (vfd) {
1499 media_entity_cleanup(&vfd->entity);
1500 /* Can also be called if video device was
1501 not registered */
1502 video_unregister_device(vfd);
1503 }
1504 fimc_destroy_capture_subdev(fimc);
1505 kfree(fimc->vid_cap.ctx);
1506 fimc->vid_cap.ctx = NULL;
1507 }