1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver |
4 | * |
5 | * FIMC-IS ISP video input and video output DMA interface driver |
6 | * |
7 | * Copyright (C) 2013 Samsung Electronics Co., Ltd. |
8 | * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> |
9 | * |
10 | * The hardware handling code derived from a driver written by |
11 | * Younghwan Joo <yhwan.joo@samsung.com>. |
12 | */ |
13 | |
14 | #include <linux/bitops.h> |
15 | #include <linux/device.h> |
16 | #include <linux/delay.h> |
17 | #include <linux/errno.h> |
18 | #include <linux/kernel.h> |
19 | #include <linux/module.h> |
20 | #include <linux/types.h> |
21 | #include <linux/printk.h> |
22 | #include <linux/pm_runtime.h> |
23 | #include <linux/slab.h> |
24 | #include <linux/videodev2.h> |
25 | |
26 | #include <media/v4l2-device.h> |
27 | #include <media/v4l2-ioctl.h> |
28 | #include <media/videobuf2-v4l2.h> |
29 | #include <media/videobuf2-dma-contig.h> |
30 | #include <media/drv-intf/exynos-fimc.h> |
31 | |
32 | #include "common.h" |
33 | #include "media-dev.h" |
34 | #include "fimc-is.h" |
35 | #include "fimc-isp-video.h" |
36 | #include "fimc-is-param.h" |
37 | |
38 | static int isp_video_capture_queue_setup(struct vb2_queue *vq, |
39 | unsigned int *num_buffers, unsigned int *num_planes, |
40 | unsigned int sizes[], struct device *alloc_devs[]) |
41 | { |
42 | struct fimc_isp *isp = vb2_get_drv_priv(q: vq); |
43 | const struct v4l2_pix_format_mplane *vid_fmt = &isp->video_capture.pixfmt; |
44 | const struct fimc_fmt *fmt = isp->video_capture.format; |
45 | unsigned int wh, i; |
46 | |
47 | wh = vid_fmt->width * vid_fmt->height; |
48 | |
49 | if (fmt == NULL) |
50 | return -EINVAL; |
51 | |
52 | *num_buffers = clamp_t(u32, *num_buffers, FIMC_ISP_REQ_BUFS_MIN, |
53 | FIMC_ISP_REQ_BUFS_MAX); |
54 | if (*num_planes) { |
55 | if (*num_planes != fmt->memplanes) |
56 | return -EINVAL; |
57 | for (i = 0; i < *num_planes; i++) |
58 | if (sizes[i] < (wh * fmt->depth[i]) / 8) |
59 | return -EINVAL; |
60 | return 0; |
61 | } |
62 | |
63 | *num_planes = fmt->memplanes; |
64 | |
65 | for (i = 0; i < fmt->memplanes; i++) |
66 | sizes[i] = (wh * fmt->depth[i]) / 8; |
67 | |
68 | return 0; |
69 | } |
70 | |
71 | static inline struct param_dma_output *__get_isp_dma2(struct fimc_is *is) |
72 | { |
73 | return &__get_curr_is_config(is)->isp.dma2_output; |
74 | } |
75 | |
76 | static int isp_video_capture_start_streaming(struct vb2_queue *q, |
77 | unsigned int count) |
78 | { |
79 | struct fimc_isp *isp = vb2_get_drv_priv(q); |
80 | struct fimc_is *is = fimc_isp_to_is(isp); |
81 | struct param_dma_output *dma = __get_isp_dma2(is); |
82 | struct fimc_is_video *video = &isp->video_capture; |
83 | int ret; |
84 | |
85 | if (!test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state) || |
86 | test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) |
87 | return 0; |
88 | |
89 | |
90 | dma->cmd = DMA_OUTPUT_COMMAND_ENABLE; |
91 | dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_ENABLE; |
92 | dma->buffer_address = is->is_dma_p_region + |
93 | DMA2_OUTPUT_ADDR_ARRAY_OFFS; |
94 | dma->buffer_number = video->reqbufs_count; |
95 | dma->dma_out_mask = video->buf_mask; |
96 | |
97 | isp_dbg(2, &video->ve.vdev, |
98 | "buf_count: %d, planes: %d, dma addr table: %#x\n" , |
99 | video->buf_count, video->format->memplanes, |
100 | dma->buffer_address); |
101 | |
102 | fimc_is_mem_barrier(); |
103 | |
104 | fimc_is_set_param_bit(is, num: PARAM_ISP_DMA2_OUTPUT); |
105 | __fimc_is_hw_update_param(is, offset: PARAM_ISP_DMA2_OUTPUT); |
106 | |
107 | ret = fimc_is_itf_s_param(is, update: false); |
108 | if (ret < 0) |
109 | return ret; |
110 | |
111 | ret = fimc_pipeline_call(&video->ve, set_stream, 1); |
112 | if (ret < 0) |
113 | return ret; |
114 | |
115 | set_bit(ST_ISP_VID_CAP_STREAMING, addr: &isp->state); |
116 | return ret; |
117 | } |
118 | |
119 | static void isp_video_capture_stop_streaming(struct vb2_queue *q) |
120 | { |
121 | struct fimc_isp *isp = vb2_get_drv_priv(q); |
122 | struct fimc_is *is = fimc_isp_to_is(isp); |
123 | struct param_dma_output *dma = __get_isp_dma2(is); |
124 | int ret; |
125 | |
126 | ret = fimc_pipeline_call(&isp->video_capture.ve, set_stream, 0); |
127 | if (ret < 0) |
128 | return; |
129 | |
130 | dma->cmd = DMA_OUTPUT_COMMAND_DISABLE; |
131 | dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_DISABLE; |
132 | dma->buffer_number = 0; |
133 | dma->buffer_address = 0; |
134 | dma->dma_out_mask = 0; |
135 | |
136 | fimc_is_set_param_bit(is, num: PARAM_ISP_DMA2_OUTPUT); |
137 | __fimc_is_hw_update_param(is, offset: PARAM_ISP_DMA2_OUTPUT); |
138 | |
139 | ret = fimc_is_itf_s_param(is, update: false); |
140 | if (ret < 0) |
141 | dev_warn(&is->pdev->dev, "%s: DMA stop failed\n" , __func__); |
142 | |
143 | fimc_is_hw_set_isp_buf_mask(is, mask: 0); |
144 | |
145 | clear_bit(ST_ISP_VID_CAP_BUF_PREP, addr: &isp->state); |
146 | clear_bit(ST_ISP_VID_CAP_STREAMING, addr: &isp->state); |
147 | |
148 | isp->video_capture.buf_count = 0; |
149 | } |
150 | |
151 | static int isp_video_capture_buffer_prepare(struct vb2_buffer *vb) |
152 | { |
153 | struct fimc_isp *isp = vb2_get_drv_priv(q: vb->vb2_queue); |
154 | struct fimc_is_video *video = &isp->video_capture; |
155 | int i; |
156 | |
157 | if (video->format == NULL) |
158 | return -EINVAL; |
159 | |
160 | for (i = 0; i < video->format->memplanes; i++) { |
161 | unsigned long size = video->pixfmt.plane_fmt[i].sizeimage; |
162 | |
163 | if (vb2_plane_size(vb, plane_no: i) < size) { |
164 | v4l2_err(&video->ve.vdev, |
165 | "User buffer too small (%ld < %ld)\n" , |
166 | vb2_plane_size(vb, i), size); |
167 | return -EINVAL; |
168 | } |
169 | vb2_set_plane_payload(vb, plane_no: i, size); |
170 | } |
171 | |
172 | /* Check if we get one of the already known buffers. */ |
173 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { |
174 | dma_addr_t dma_addr = vb2_dma_contig_plane_dma_addr(vb, plane_no: 0); |
175 | int i; |
176 | |
177 | for (i = 0; i < video->buf_count; i++) |
178 | if (video->buffers[i]->dma_addr[0] == dma_addr) |
179 | return 0; |
180 | return -ENXIO; |
181 | } |
182 | |
183 | return 0; |
184 | } |
185 | |
186 | static void isp_video_capture_buffer_queue(struct vb2_buffer *vb) |
187 | { |
188 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
189 | struct fimc_isp *isp = vb2_get_drv_priv(q: vb->vb2_queue); |
190 | struct fimc_is_video *video = &isp->video_capture; |
191 | struct fimc_is *is = fimc_isp_to_is(isp); |
192 | struct isp_video_buf *ivb = to_isp_video_buf(vbuf); |
193 | unsigned long flags; |
194 | unsigned int i; |
195 | |
196 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { |
197 | spin_lock_irqsave(&is->slock, flags); |
198 | video->buf_mask |= BIT(ivb->index); |
199 | spin_unlock_irqrestore(lock: &is->slock, flags); |
200 | } else { |
201 | unsigned int num_planes = video->format->memplanes; |
202 | |
203 | ivb->index = video->buf_count; |
204 | video->buffers[ivb->index] = ivb; |
205 | |
206 | for (i = 0; i < num_planes; i++) { |
207 | int buf_index = ivb->index * num_planes + i; |
208 | |
209 | ivb->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, plane_no: i); |
210 | is->is_p_region->shared[32 + buf_index] = |
211 | ivb->dma_addr[i]; |
212 | |
213 | isp_dbg(2, &video->ve.vdev, |
214 | "dma_buf %d (%d/%d/%d) addr: %pad\n" , |
215 | buf_index, ivb->index, i, vb->index, |
216 | &ivb->dma_addr[i]); |
217 | } |
218 | |
219 | if (++video->buf_count < video->reqbufs_count) |
220 | return; |
221 | |
222 | video->buf_mask = (1UL << video->buf_count) - 1; |
223 | set_bit(ST_ISP_VID_CAP_BUF_PREP, addr: &isp->state); |
224 | } |
225 | |
226 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) |
227 | isp_video_capture_start_streaming(q: vb->vb2_queue, count: 0); |
228 | } |
229 | |
230 | /* |
231 | * FIMC-IS ISP input and output DMA interface interrupt handler. |
232 | * Locking: called with is->slock spinlock held. |
233 | */ |
234 | void fimc_isp_video_irq_handler(struct fimc_is *is) |
235 | { |
236 | struct fimc_is_video *video = &is->isp.video_capture; |
237 | struct vb2_v4l2_buffer *vbuf; |
238 | int buf_index; |
239 | |
240 | /* TODO: Ensure the DMA is really stopped in stop_streaming callback */ |
241 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &is->isp.state)) |
242 | return; |
243 | |
244 | buf_index = (is->i2h_cmd.args[1] - 1) % video->buf_count; |
245 | vbuf = &video->buffers[buf_index]->vb; |
246 | |
247 | vbuf->vb2_buf.timestamp = ktime_get_ns(); |
248 | vb2_buffer_done(vb: &vbuf->vb2_buf, state: VB2_BUF_STATE_DONE); |
249 | |
250 | video->buf_mask &= ~BIT(buf_index); |
251 | fimc_is_hw_set_isp_buf_mask(is, mask: video->buf_mask); |
252 | } |
253 | |
254 | static const struct vb2_ops isp_video_capture_qops = { |
255 | .queue_setup = isp_video_capture_queue_setup, |
256 | .buf_prepare = isp_video_capture_buffer_prepare, |
257 | .buf_queue = isp_video_capture_buffer_queue, |
258 | .wait_prepare = vb2_ops_wait_prepare, |
259 | .wait_finish = vb2_ops_wait_finish, |
260 | .start_streaming = isp_video_capture_start_streaming, |
261 | .stop_streaming = isp_video_capture_stop_streaming, |
262 | }; |
263 | |
264 | static int isp_video_open(struct file *file) |
265 | { |
266 | struct fimc_isp *isp = video_drvdata(file); |
267 | struct exynos_video_entity *ve = &isp->video_capture.ve; |
268 | struct media_entity *me = &ve->vdev.entity; |
269 | int ret; |
270 | |
271 | if (mutex_lock_interruptible(&isp->video_lock)) |
272 | return -ERESTARTSYS; |
273 | |
274 | ret = v4l2_fh_open(filp: file); |
275 | if (ret < 0) |
276 | goto unlock; |
277 | |
278 | ret = pm_runtime_resume_and_get(dev: &isp->pdev->dev); |
279 | if (ret < 0) |
280 | goto rel_fh; |
281 | |
282 | if (v4l2_fh_is_singular_file(filp: file)) { |
283 | mutex_lock(&me->graph_obj.mdev->graph_mutex); |
284 | |
285 | ret = fimc_pipeline_call(ve, open, me, true); |
286 | |
287 | /* Mark the video pipeline as in use. */ |
288 | if (ret == 0) |
289 | me->use_count++; |
290 | |
291 | mutex_unlock(lock: &me->graph_obj.mdev->graph_mutex); |
292 | } |
293 | if (!ret) |
294 | goto unlock; |
295 | rel_fh: |
296 | v4l2_fh_release(filp: file); |
297 | unlock: |
298 | mutex_unlock(lock: &isp->video_lock); |
299 | return ret; |
300 | } |
301 | |
302 | static int isp_video_release(struct file *file) |
303 | { |
304 | struct fimc_isp *isp = video_drvdata(file); |
305 | struct fimc_is_video *ivc = &isp->video_capture; |
306 | struct media_entity *entity = &ivc->ve.vdev.entity; |
307 | struct media_device *mdev = entity->graph_obj.mdev; |
308 | bool is_singular_file; |
309 | |
310 | mutex_lock(&isp->video_lock); |
311 | |
312 | is_singular_file = v4l2_fh_is_singular_file(filp: file); |
313 | |
314 | if (is_singular_file && ivc->streaming) { |
315 | video_device_pipeline_stop(vdev: &ivc->ve.vdev); |
316 | ivc->streaming = 0; |
317 | } |
318 | |
319 | _vb2_fop_release(file, NULL); |
320 | |
321 | if (is_singular_file) { |
322 | fimc_pipeline_call(&ivc->ve, close); |
323 | |
324 | mutex_lock(&mdev->graph_mutex); |
325 | entity->use_count--; |
326 | mutex_unlock(lock: &mdev->graph_mutex); |
327 | } |
328 | |
329 | pm_runtime_put(dev: &isp->pdev->dev); |
330 | mutex_unlock(lock: &isp->video_lock); |
331 | |
332 | return 0; |
333 | } |
334 | |
335 | static const struct v4l2_file_operations isp_video_fops = { |
336 | .owner = THIS_MODULE, |
337 | .open = isp_video_open, |
338 | .release = isp_video_release, |
339 | .poll = vb2_fop_poll, |
340 | .unlocked_ioctl = video_ioctl2, |
341 | .mmap = vb2_fop_mmap, |
342 | }; |
343 | |
344 | /* |
345 | * Video node ioctl operations |
346 | */ |
347 | static int isp_video_querycap(struct file *file, void *priv, |
348 | struct v4l2_capability *cap) |
349 | { |
350 | struct fimc_isp *isp = video_drvdata(file); |
351 | |
352 | __fimc_vidioc_querycap(dev: &isp->pdev->dev, cap); |
353 | return 0; |
354 | } |
355 | |
356 | static int isp_video_enum_fmt(struct file *file, void *priv, |
357 | struct v4l2_fmtdesc *f) |
358 | { |
359 | const struct fimc_fmt *fmt; |
360 | |
361 | if (f->index >= FIMC_ISP_NUM_FORMATS) |
362 | return -EINVAL; |
363 | |
364 | fmt = fimc_isp_find_format(NULL, NULL, index: f->index); |
365 | if (WARN_ON(fmt == NULL)) |
366 | return -EINVAL; |
367 | |
368 | f->pixelformat = fmt->fourcc; |
369 | |
370 | return 0; |
371 | } |
372 | |
373 | static int isp_video_g_fmt_mplane(struct file *file, void *fh, |
374 | struct v4l2_format *f) |
375 | { |
376 | struct fimc_isp *isp = video_drvdata(file); |
377 | |
378 | f->fmt.pix_mp = isp->video_capture.pixfmt; |
379 | return 0; |
380 | } |
381 | |
382 | static void __isp_video_try_fmt(struct fimc_isp *isp, |
383 | struct v4l2_pix_format_mplane *pixm, |
384 | const struct fimc_fmt **fmt) |
385 | { |
386 | const struct fimc_fmt *__fmt; |
387 | |
388 | __fmt = fimc_isp_find_format(pixelformat: &pixm->pixelformat, NULL, index: 2); |
389 | |
390 | if (fmt) |
391 | *fmt = __fmt; |
392 | |
393 | pixm->colorspace = V4L2_COLORSPACE_SRGB; |
394 | pixm->field = V4L2_FIELD_NONE; |
395 | pixm->num_planes = __fmt->memplanes; |
396 | pixm->pixelformat = __fmt->fourcc; |
397 | /* |
398 | * TODO: double check with the docmentation these width/height |
399 | * constraints are correct. |
400 | */ |
401 | v4l_bound_align_image(width: &pixm->width, FIMC_ISP_SOURCE_WIDTH_MIN, |
402 | FIMC_ISP_SOURCE_WIDTH_MAX, walign: 3, |
403 | height: &pixm->height, FIMC_ISP_SOURCE_HEIGHT_MIN, |
404 | FIMC_ISP_SOURCE_HEIGHT_MAX, halign: 0, salign: 0); |
405 | } |
406 | |
407 | static int isp_video_try_fmt_mplane(struct file *file, void *fh, |
408 | struct v4l2_format *f) |
409 | { |
410 | struct fimc_isp *isp = video_drvdata(file); |
411 | |
412 | __isp_video_try_fmt(isp, pixm: &f->fmt.pix_mp, NULL); |
413 | return 0; |
414 | } |
415 | |
416 | static int isp_video_s_fmt_mplane(struct file *file, void *priv, |
417 | struct v4l2_format *f) |
418 | { |
419 | struct fimc_isp *isp = video_drvdata(file); |
420 | struct fimc_is *is = fimc_isp_to_is(isp); |
421 | struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; |
422 | const struct fimc_fmt *ifmt = NULL; |
423 | struct param_dma_output *dma = __get_isp_dma2(is); |
424 | |
425 | __isp_video_try_fmt(isp, pixm, fmt: &ifmt); |
426 | |
427 | if (WARN_ON(ifmt == NULL)) |
428 | return -EINVAL; |
429 | |
430 | dma->format = DMA_OUTPUT_FORMAT_BAYER; |
431 | dma->order = DMA_OUTPUT_ORDER_GB_BG; |
432 | dma->plane = ifmt->memplanes; |
433 | dma->bitwidth = ifmt->depth[0]; |
434 | dma->width = pixm->width; |
435 | dma->height = pixm->height; |
436 | |
437 | fimc_is_mem_barrier(); |
438 | |
439 | isp->video_capture.format = ifmt; |
440 | isp->video_capture.pixfmt = *pixm; |
441 | |
442 | return 0; |
443 | } |
444 | |
445 | /* |
446 | * Check for source/sink format differences at each link. |
447 | * Return 0 if the formats match or -EPIPE otherwise. |
448 | */ |
449 | static int isp_video_pipeline_validate(struct fimc_isp *isp) |
450 | { |
451 | struct v4l2_subdev *sd = &isp->subdev; |
452 | struct media_pad *pad; |
453 | int ret; |
454 | |
455 | while (1) { |
456 | struct v4l2_subdev_format sink_fmt = { |
457 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, |
458 | }; |
459 | struct v4l2_subdev_format src_fmt = { |
460 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, |
461 | }; |
462 | |
463 | /* Retrieve format at the sink pad */ |
464 | pad = &sd->entity.pads[0]; |
465 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) |
466 | break; |
467 | sink_fmt.pad = pad->index; |
468 | ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); |
469 | if (ret < 0 && ret != -ENOIOCTLCMD) |
470 | return -EPIPE; |
471 | |
472 | /* Retrieve format at the source pad */ |
473 | pad = media_pad_remote_pad_first(pad); |
474 | if (!pad || !is_media_entity_v4l2_subdev(entity: pad->entity)) |
475 | break; |
476 | |
477 | sd = media_entity_to_v4l2_subdev(pad->entity); |
478 | src_fmt.pad = pad->index; |
479 | ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); |
480 | if (ret < 0 && ret != -ENOIOCTLCMD) |
481 | return -EPIPE; |
482 | |
483 | if (src_fmt.format.width != sink_fmt.format.width || |
484 | src_fmt.format.height != sink_fmt.format.height || |
485 | src_fmt.format.code != sink_fmt.format.code) |
486 | return -EPIPE; |
487 | } |
488 | |
489 | return 0; |
490 | } |
491 | |
492 | static int isp_video_streamon(struct file *file, void *priv, |
493 | enum v4l2_buf_type type) |
494 | { |
495 | struct fimc_isp *isp = video_drvdata(file); |
496 | struct exynos_video_entity *ve = &isp->video_capture.ve; |
497 | int ret; |
498 | |
499 | ret = video_device_pipeline_start(vdev: &ve->vdev, pipe: &ve->pipe->mp); |
500 | if (ret < 0) |
501 | return ret; |
502 | |
503 | ret = isp_video_pipeline_validate(isp); |
504 | if (ret < 0) |
505 | goto p_stop; |
506 | |
507 | ret = vb2_ioctl_streamon(file, priv, i: type); |
508 | if (ret < 0) |
509 | goto p_stop; |
510 | |
511 | isp->video_capture.streaming = 1; |
512 | return 0; |
513 | p_stop: |
514 | video_device_pipeline_stop(vdev: &ve->vdev); |
515 | return ret; |
516 | } |
517 | |
518 | static int isp_video_streamoff(struct file *file, void *priv, |
519 | enum v4l2_buf_type type) |
520 | { |
521 | struct fimc_isp *isp = video_drvdata(file); |
522 | struct fimc_is_video *video = &isp->video_capture; |
523 | int ret; |
524 | |
525 | ret = vb2_ioctl_streamoff(file, priv, i: type); |
526 | if (ret < 0) |
527 | return ret; |
528 | |
529 | video_device_pipeline_stop(vdev: &video->ve.vdev); |
530 | video->streaming = 0; |
531 | return 0; |
532 | } |
533 | |
534 | static int isp_video_reqbufs(struct file *file, void *priv, |
535 | struct v4l2_requestbuffers *rb) |
536 | { |
537 | struct fimc_isp *isp = video_drvdata(file); |
538 | int ret; |
539 | |
540 | ret = vb2_ioctl_reqbufs(file, priv, p: rb); |
541 | if (ret < 0) |
542 | return ret; |
543 | |
544 | if (rb->count && rb->count < FIMC_ISP_REQ_BUFS_MIN) { |
545 | rb->count = 0; |
546 | vb2_ioctl_reqbufs(file, priv, p: rb); |
547 | ret = -ENOMEM; |
548 | } |
549 | |
550 | isp->video_capture.reqbufs_count = rb->count; |
551 | return ret; |
552 | } |
553 | |
554 | static const struct v4l2_ioctl_ops isp_video_ioctl_ops = { |
555 | .vidioc_querycap = isp_video_querycap, |
556 | .vidioc_enum_fmt_vid_cap = isp_video_enum_fmt, |
557 | .vidioc_try_fmt_vid_cap_mplane = isp_video_try_fmt_mplane, |
558 | .vidioc_s_fmt_vid_cap_mplane = isp_video_s_fmt_mplane, |
559 | .vidioc_g_fmt_vid_cap_mplane = isp_video_g_fmt_mplane, |
560 | .vidioc_reqbufs = isp_video_reqbufs, |
561 | .vidioc_querybuf = vb2_ioctl_querybuf, |
562 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
563 | .vidioc_create_bufs = vb2_ioctl_create_bufs, |
564 | .vidioc_qbuf = vb2_ioctl_qbuf, |
565 | .vidioc_dqbuf = vb2_ioctl_dqbuf, |
566 | .vidioc_streamon = isp_video_streamon, |
567 | .vidioc_streamoff = isp_video_streamoff, |
568 | }; |
569 | |
570 | int fimc_isp_video_device_register(struct fimc_isp *isp, |
571 | struct v4l2_device *v4l2_dev, |
572 | enum v4l2_buf_type type) |
573 | { |
574 | struct vb2_queue *q = &isp->video_capture.vb_queue; |
575 | struct fimc_is_video *iv; |
576 | struct video_device *vdev; |
577 | int ret; |
578 | |
579 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
580 | iv = &isp->video_capture; |
581 | else |
582 | return -ENOSYS; |
583 | |
584 | mutex_init(&isp->video_lock); |
585 | INIT_LIST_HEAD(list: &iv->pending_buf_q); |
586 | INIT_LIST_HEAD(list: &iv->active_buf_q); |
587 | iv->format = fimc_isp_find_format(NULL, NULL, index: 0); |
588 | iv->pixfmt.width = IS_DEFAULT_WIDTH; |
589 | iv->pixfmt.height = IS_DEFAULT_HEIGHT; |
590 | iv->pixfmt.pixelformat = iv->format->fourcc; |
591 | iv->pixfmt.colorspace = V4L2_COLORSPACE_SRGB; |
592 | iv->reqbufs_count = 0; |
593 | |
594 | memset(q, 0, sizeof(*q)); |
595 | q->type = type; |
596 | q->io_modes = VB2_MMAP | VB2_USERPTR; |
597 | q->ops = &isp_video_capture_qops; |
598 | q->mem_ops = &vb2_dma_contig_memops; |
599 | q->buf_struct_size = sizeof(struct isp_video_buf); |
600 | q->drv_priv = isp; |
601 | q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
602 | q->lock = &isp->video_lock; |
603 | q->dev = &isp->pdev->dev; |
604 | |
605 | ret = vb2_queue_init(q); |
606 | if (ret < 0) |
607 | return ret; |
608 | |
609 | vdev = &iv->ve.vdev; |
610 | memset(vdev, 0, sizeof(*vdev)); |
611 | strscpy(vdev->name, "fimc-is-isp.capture" , sizeof(vdev->name)); |
612 | vdev->queue = q; |
613 | vdev->fops = &isp_video_fops; |
614 | vdev->ioctl_ops = &isp_video_ioctl_ops; |
615 | vdev->v4l2_dev = v4l2_dev; |
616 | vdev->minor = -1; |
617 | vdev->release = video_device_release_empty; |
618 | vdev->lock = &isp->video_lock; |
619 | vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE; |
620 | |
621 | iv->pad.flags = MEDIA_PAD_FL_SINK; |
622 | ret = media_entity_pads_init(entity: &vdev->entity, num_pads: 1, pads: &iv->pad); |
623 | if (ret < 0) |
624 | return ret; |
625 | |
626 | video_set_drvdata(vdev, data: isp); |
627 | |
628 | ret = video_register_device(vdev, type: VFL_TYPE_VIDEO, nr: -1); |
629 | if (ret < 0) { |
630 | media_entity_cleanup(entity: &vdev->entity); |
631 | return ret; |
632 | } |
633 | |
634 | v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n" , |
635 | vdev->name, video_device_node_name(vdev)); |
636 | |
637 | return 0; |
638 | } |
639 | |
640 | void fimc_isp_video_device_unregister(struct fimc_isp *isp, |
641 | enum v4l2_buf_type type) |
642 | { |
643 | struct exynos_video_entity *ve; |
644 | |
645 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
646 | ve = &isp->video_capture.ve; |
647 | else |
648 | return; |
649 | |
650 | mutex_lock(&isp->video_lock); |
651 | |
652 | if (video_is_registered(vdev: &ve->vdev)) { |
653 | video_unregister_device(vdev: &ve->vdev); |
654 | media_entity_cleanup(entity: &ve->vdev.entity); |
655 | ve->pipe = NULL; |
656 | } |
657 | |
658 | mutex_unlock(lock: &isp->video_lock); |
659 | } |
660 | |