Commit | Line | Data |
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34947b8a SN |
1 | /* |
2 | * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver | |
3 | * | |
4 | * FIMC-IS ISP video input and video output DMA interface driver | |
5 | * | |
6 | * Copyright (C) 2013 Samsung Electronics Co., Ltd. | |
7 | * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> | |
8 | * | |
9 | * The hardware handling code derived from a driver written by | |
10 | * Younghwan Joo <yhwan.joo@samsung.com>. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License version 2 as | |
14 | * published by the Free Software Foundation. | |
15 | */ | |
16 | ||
17 | #include <linux/bitops.h> | |
18 | #include <linux/device.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/printk.h> | |
25 | #include <linux/pm_runtime.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/videodev2.h> | |
28 | ||
29 | #include <media/v4l2-device.h> | |
30 | #include <media/v4l2-ioctl.h> | |
c139990e | 31 | #include <media/videobuf2-v4l2.h> |
34947b8a | 32 | #include <media/videobuf2-dma-contig.h> |
d647f0b7 | 33 | #include <media/drv-intf/exynos-fimc.h> |
34947b8a SN |
34 | |
35 | #include "common.h" | |
36 | #include "media-dev.h" | |
37 | #include "fimc-is.h" | |
38 | #include "fimc-isp-video.h" | |
39 | #include "fimc-is-param.h" | |
40 | ||
41 | static int isp_video_capture_queue_setup(struct vb2_queue *vq, | |
34947b8a SN |
42 | unsigned int *num_buffers, unsigned int *num_planes, |
43 | unsigned int sizes[], void *allocators[]) | |
44 | { | |
45 | struct fimc_isp *isp = vb2_get_drv_priv(vq); | |
46 | struct v4l2_pix_format_mplane *vid_fmt = &isp->video_capture.pixfmt; | |
df9ecb0c | 47 | const struct fimc_fmt *fmt = isp->video_capture.format; |
34947b8a SN |
48 | unsigned int wh, i; |
49 | ||
df9ecb0c | 50 | wh = vid_fmt->width * vid_fmt->height; |
34947b8a SN |
51 | |
52 | if (fmt == NULL) | |
53 | return -EINVAL; | |
54 | ||
55 | *num_buffers = clamp_t(u32, *num_buffers, FIMC_ISP_REQ_BUFS_MIN, | |
56 | FIMC_ISP_REQ_BUFS_MAX); | |
df9ecb0c HV |
57 | if (*num_planes) { |
58 | if (*num_planes != fmt->memplanes) | |
59 | return -EINVAL; | |
60 | for (i = 0; i < *num_planes; i++) { | |
61 | if (sizes[i] < (wh * fmt->depth[i]) / 8) | |
62 | return -EINVAL; | |
63 | allocators[i] = isp->alloc_ctx; | |
64 | } | |
65 | return 0; | |
66 | } | |
67 | ||
34947b8a SN |
68 | *num_planes = fmt->memplanes; |
69 | ||
70 | for (i = 0; i < fmt->memplanes; i++) { | |
df9ecb0c | 71 | sizes[i] = (wh * fmt->depth[i]) / 8; |
34947b8a SN |
72 | allocators[i] = isp->alloc_ctx; |
73 | } | |
74 | ||
75 | return 0; | |
76 | } | |
77 | ||
78 | static inline struct param_dma_output *__get_isp_dma2(struct fimc_is *is) | |
79 | { | |
80 | return &__get_curr_is_config(is)->isp.dma2_output; | |
81 | } | |
82 | ||
83 | static int isp_video_capture_start_streaming(struct vb2_queue *q, | |
84 | unsigned int count) | |
85 | { | |
86 | struct fimc_isp *isp = vb2_get_drv_priv(q); | |
87 | struct fimc_is *is = fimc_isp_to_is(isp); | |
88 | struct param_dma_output *dma = __get_isp_dma2(is); | |
89 | struct fimc_is_video *video = &isp->video_capture; | |
90 | int ret; | |
91 | ||
92 | if (!test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state) || | |
93 | test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) | |
94 | return 0; | |
95 | ||
96 | ||
97 | dma->cmd = DMA_OUTPUT_COMMAND_ENABLE; | |
98 | dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_ENABLE; | |
99 | dma->buffer_address = is->is_dma_p_region + | |
100 | DMA2_OUTPUT_ADDR_ARRAY_OFFS; | |
101 | dma->buffer_number = video->reqbufs_count; | |
102 | dma->dma_out_mask = video->buf_mask; | |
103 | ||
104 | isp_dbg(2, &video->ve.vdev, | |
105 | "buf_count: %d, planes: %d, dma addr table: %#x\n", | |
106 | video->buf_count, video->format->memplanes, | |
107 | dma->buffer_address); | |
108 | ||
109 | fimc_is_mem_barrier(); | |
110 | ||
111 | fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT); | |
112 | __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT); | |
113 | ||
114 | ret = fimc_is_itf_s_param(is, false); | |
115 | if (ret < 0) | |
116 | return ret; | |
117 | ||
118 | ret = fimc_pipeline_call(&video->ve, set_stream, 1); | |
119 | if (ret < 0) | |
120 | return ret; | |
121 | ||
122 | set_bit(ST_ISP_VID_CAP_STREAMING, &isp->state); | |
123 | return ret; | |
124 | } | |
125 | ||
e37559b2 | 126 | static void isp_video_capture_stop_streaming(struct vb2_queue *q) |
34947b8a SN |
127 | { |
128 | struct fimc_isp *isp = vb2_get_drv_priv(q); | |
129 | struct fimc_is *is = fimc_isp_to_is(isp); | |
130 | struct param_dma_output *dma = __get_isp_dma2(is); | |
131 | int ret; | |
132 | ||
133 | ret = fimc_pipeline_call(&isp->video_capture.ve, set_stream, 0); | |
134 | if (ret < 0) | |
e37559b2 | 135 | return; |
34947b8a SN |
136 | |
137 | dma->cmd = DMA_OUTPUT_COMMAND_DISABLE; | |
138 | dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_DISABLE; | |
139 | dma->buffer_number = 0; | |
140 | dma->buffer_address = 0; | |
141 | dma->dma_out_mask = 0; | |
142 | ||
143 | fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT); | |
144 | __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT); | |
145 | ||
146 | ret = fimc_is_itf_s_param(is, false); | |
147 | if (ret < 0) | |
148 | dev_warn(&is->pdev->dev, "%s: DMA stop failed\n", __func__); | |
149 | ||
150 | fimc_is_hw_set_isp_buf_mask(is, 0); | |
151 | ||
152 | clear_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); | |
153 | clear_bit(ST_ISP_VID_CAP_STREAMING, &isp->state); | |
154 | ||
155 | isp->video_capture.buf_count = 0; | |
34947b8a SN |
156 | } |
157 | ||
158 | static int isp_video_capture_buffer_prepare(struct vb2_buffer *vb) | |
159 | { | |
160 | struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); | |
161 | struct fimc_is_video *video = &isp->video_capture; | |
162 | int i; | |
163 | ||
164 | if (video->format == NULL) | |
165 | return -EINVAL; | |
166 | ||
167 | for (i = 0; i < video->format->memplanes; i++) { | |
168 | unsigned long size = video->pixfmt.plane_fmt[i].sizeimage; | |
169 | ||
170 | if (vb2_plane_size(vb, i) < size) { | |
171 | v4l2_err(&video->ve.vdev, | |
172 | "User buffer too small (%ld < %ld)\n", | |
173 | vb2_plane_size(vb, i), size); | |
174 | return -EINVAL; | |
175 | } | |
176 | vb2_set_plane_payload(vb, i, size); | |
177 | } | |
178 | ||
179 | /* Check if we get one of the already known buffers. */ | |
180 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { | |
181 | dma_addr_t dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0); | |
182 | int i; | |
183 | ||
184 | for (i = 0; i < video->buf_count; i++) | |
185 | if (video->buffers[i]->dma_addr[0] == dma_addr) | |
186 | return 0; | |
187 | return -ENXIO; | |
188 | } | |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | static void isp_video_capture_buffer_queue(struct vb2_buffer *vb) | |
194 | { | |
2d700715 | 195 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
34947b8a SN |
196 | struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); |
197 | struct fimc_is_video *video = &isp->video_capture; | |
198 | struct fimc_is *is = fimc_isp_to_is(isp); | |
2d700715 | 199 | struct isp_video_buf *ivb = to_isp_video_buf(vbuf); |
34947b8a SN |
200 | unsigned long flags; |
201 | unsigned int i; | |
202 | ||
203 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { | |
204 | spin_lock_irqsave(&is->slock, flags); | |
205 | video->buf_mask |= BIT(ivb->index); | |
206 | spin_unlock_irqrestore(&is->slock, flags); | |
207 | } else { | |
208 | unsigned int num_planes = video->format->memplanes; | |
209 | ||
210 | ivb->index = video->buf_count; | |
211 | video->buffers[ivb->index] = ivb; | |
212 | ||
213 | for (i = 0; i < num_planes; i++) { | |
214 | int buf_index = ivb->index * num_planes + i; | |
215 | ||
216 | ivb->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i); | |
217 | is->is_p_region->shared[32 + buf_index] = | |
218 | ivb->dma_addr[i]; | |
219 | ||
220 | isp_dbg(2, &video->ve.vdev, | |
76a56367 RV |
221 | "dma_buf %d (%d/%d/%d) addr: %pad\n", |
222 | buf_index, ivb->index, i, vb->index, | |
7d4020c3 | 223 | &ivb->dma_addr[i]); |
34947b8a SN |
224 | } |
225 | ||
226 | if (++video->buf_count < video->reqbufs_count) | |
227 | return; | |
228 | ||
229 | video->buf_mask = (1UL << video->buf_count) - 1; | |
230 | set_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); | |
231 | } | |
232 | ||
233 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) | |
234 | isp_video_capture_start_streaming(vb->vb2_queue, 0); | |
235 | } | |
236 | ||
237 | /* | |
238 | * FIMC-IS ISP input and output DMA interface interrupt handler. | |
239 | * Locking: called with is->slock spinlock held. | |
240 | */ | |
241 | void fimc_isp_video_irq_handler(struct fimc_is *is) | |
242 | { | |
243 | struct fimc_is_video *video = &is->isp.video_capture; | |
2d700715 | 244 | struct vb2_v4l2_buffer *vbuf; |
34947b8a SN |
245 | int buf_index; |
246 | ||
247 | /* TODO: Ensure the DMA is really stopped in stop_streaming callback */ | |
248 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &is->isp.state)) | |
249 | return; | |
250 | ||
251 | buf_index = (is->i2h_cmd.args[1] - 1) % video->buf_count; | |
2d700715 | 252 | vbuf = &video->buffers[buf_index]->vb; |
34947b8a | 253 | |
d6dd645e | 254 | vbuf->vb2_buf.timestamp = ktime_get_ns(); |
2d700715 | 255 | vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_DONE); |
34947b8a SN |
256 | |
257 | video->buf_mask &= ~BIT(buf_index); | |
258 | fimc_is_hw_set_isp_buf_mask(is, video->buf_mask); | |
259 | } | |
260 | ||
261 | static const struct vb2_ops isp_video_capture_qops = { | |
262 | .queue_setup = isp_video_capture_queue_setup, | |
263 | .buf_prepare = isp_video_capture_buffer_prepare, | |
264 | .buf_queue = isp_video_capture_buffer_queue, | |
265 | .wait_prepare = vb2_ops_wait_prepare, | |
266 | .wait_finish = vb2_ops_wait_finish, | |
267 | .start_streaming = isp_video_capture_start_streaming, | |
268 | .stop_streaming = isp_video_capture_stop_streaming, | |
269 | }; | |
270 | ||
271 | static int isp_video_open(struct file *file) | |
272 | { | |
273 | struct fimc_isp *isp = video_drvdata(file); | |
274 | struct exynos_video_entity *ve = &isp->video_capture.ve; | |
275 | struct media_entity *me = &ve->vdev.entity; | |
276 | int ret; | |
277 | ||
278 | if (mutex_lock_interruptible(&isp->video_lock)) | |
279 | return -ERESTARTSYS; | |
280 | ||
281 | ret = v4l2_fh_open(file); | |
282 | if (ret < 0) | |
283 | goto unlock; | |
284 | ||
285 | ret = pm_runtime_get_sync(&isp->pdev->dev); | |
286 | if (ret < 0) | |
287 | goto rel_fh; | |
288 | ||
289 | if (v4l2_fh_is_singular_file(file)) { | |
d10c9894 | 290 | mutex_lock(&me->graph_obj.mdev->graph_mutex); |
34947b8a SN |
291 | |
292 | ret = fimc_pipeline_call(ve, open, me, true); | |
293 | ||
294 | /* Mark the video pipeline as in use. */ | |
295 | if (ret == 0) | |
296 | me->use_count++; | |
297 | ||
d10c9894 | 298 | mutex_unlock(&me->graph_obj.mdev->graph_mutex); |
34947b8a SN |
299 | } |
300 | if (!ret) | |
301 | goto unlock; | |
302 | rel_fh: | |
303 | v4l2_fh_release(file); | |
304 | unlock: | |
305 | mutex_unlock(&isp->video_lock); | |
306 | return ret; | |
307 | } | |
308 | ||
309 | static int isp_video_release(struct file *file) | |
310 | { | |
311 | struct fimc_isp *isp = video_drvdata(file); | |
312 | struct fimc_is_video *ivc = &isp->video_capture; | |
313 | struct media_entity *entity = &ivc->ve.vdev.entity; | |
d10c9894 | 314 | struct media_device *mdev = entity->graph_obj.mdev; |
34947b8a SN |
315 | |
316 | mutex_lock(&isp->video_lock); | |
317 | ||
318 | if (v4l2_fh_is_singular_file(file) && ivc->streaming) { | |
319 | media_entity_pipeline_stop(entity); | |
320 | ivc->streaming = 0; | |
321 | } | |
322 | ||
323 | vb2_fop_release(file); | |
324 | ||
325 | if (v4l2_fh_is_singular_file(file)) { | |
326 | fimc_pipeline_call(&ivc->ve, close); | |
327 | ||
328 | mutex_lock(&mdev->graph_mutex); | |
329 | entity->use_count--; | |
330 | mutex_unlock(&mdev->graph_mutex); | |
331 | } | |
332 | ||
333 | pm_runtime_put(&isp->pdev->dev); | |
334 | mutex_unlock(&isp->video_lock); | |
335 | ||
6cf77d18 | 336 | return 0; |
34947b8a SN |
337 | } |
338 | ||
339 | static const struct v4l2_file_operations isp_video_fops = { | |
340 | .owner = THIS_MODULE, | |
341 | .open = isp_video_open, | |
342 | .release = isp_video_release, | |
343 | .poll = vb2_fop_poll, | |
344 | .unlocked_ioctl = video_ioctl2, | |
345 | .mmap = vb2_fop_mmap, | |
346 | }; | |
347 | ||
348 | /* | |
349 | * Video node ioctl operations | |
350 | */ | |
351 | static int isp_video_querycap(struct file *file, void *priv, | |
352 | struct v4l2_capability *cap) | |
353 | { | |
354 | struct fimc_isp *isp = video_drvdata(file); | |
355 | ||
356 | __fimc_vidioc_querycap(&isp->pdev->dev, cap, V4L2_CAP_STREAMING); | |
357 | return 0; | |
358 | } | |
359 | ||
360 | static int isp_video_enum_fmt_mplane(struct file *file, void *priv, | |
361 | struct v4l2_fmtdesc *f) | |
362 | { | |
363 | const struct fimc_fmt *fmt; | |
364 | ||
365 | if (f->index >= FIMC_ISP_NUM_FORMATS) | |
366 | return -EINVAL; | |
367 | ||
368 | fmt = fimc_isp_find_format(NULL, NULL, f->index); | |
369 | if (WARN_ON(fmt == NULL)) | |
370 | return -EINVAL; | |
371 | ||
372 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
373 | f->pixelformat = fmt->fourcc; | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
378 | static int isp_video_g_fmt_mplane(struct file *file, void *fh, | |
379 | struct v4l2_format *f) | |
380 | { | |
381 | struct fimc_isp *isp = video_drvdata(file); | |
382 | ||
383 | f->fmt.pix_mp = isp->video_capture.pixfmt; | |
384 | return 0; | |
385 | } | |
386 | ||
387 | static void __isp_video_try_fmt(struct fimc_isp *isp, | |
388 | struct v4l2_pix_format_mplane *pixm, | |
389 | const struct fimc_fmt **fmt) | |
390 | { | |
391 | *fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, 2); | |
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(&pixm->width, FIMC_ISP_SOURCE_WIDTH_MIN, | |
402 | FIMC_ISP_SOURCE_WIDTH_MAX, 3, | |
403 | &pixm->height, FIMC_ISP_SOURCE_HEIGHT_MIN, | |
404 | FIMC_ISP_SOURCE_HEIGHT_MAX, 0, 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, &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, &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 v4l2_subdev_format sink_fmt, src_fmt; | |
453 | struct media_pad *pad; | |
454 | int ret; | |
455 | ||
456 | while (1) { | |
457 | /* Retrieve format at the sink pad */ | |
458 | pad = &sd->entity.pads[0]; | |
459 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) | |
460 | break; | |
461 | sink_fmt.pad = pad->index; | |
462 | sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
463 | ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); | |
464 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
465 | return -EPIPE; | |
466 | ||
467 | /* Retrieve format at the source pad */ | |
468 | pad = media_entity_remote_pad(pad); | |
3efdf62c | 469 | if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) |
34947b8a SN |
470 | break; |
471 | ||
472 | sd = media_entity_to_v4l2_subdev(pad->entity); | |
473 | src_fmt.pad = pad->index; | |
474 | src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
475 | ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); | |
476 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
477 | return -EPIPE; | |
478 | ||
479 | if (src_fmt.format.width != sink_fmt.format.width || | |
480 | src_fmt.format.height != sink_fmt.format.height || | |
481 | src_fmt.format.code != sink_fmt.format.code) | |
482 | return -EPIPE; | |
483 | } | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
488 | static int isp_video_streamon(struct file *file, void *priv, | |
489 | enum v4l2_buf_type type) | |
490 | { | |
491 | struct fimc_isp *isp = video_drvdata(file); | |
492 | struct exynos_video_entity *ve = &isp->video_capture.ve; | |
493 | struct media_entity *me = &ve->vdev.entity; | |
494 | int ret; | |
495 | ||
496 | ret = media_entity_pipeline_start(me, &ve->pipe->mp); | |
497 | if (ret < 0) | |
498 | return ret; | |
499 | ||
500 | ret = isp_video_pipeline_validate(isp); | |
501 | if (ret < 0) | |
502 | goto p_stop; | |
503 | ||
504 | ret = vb2_ioctl_streamon(file, priv, type); | |
505 | if (ret < 0) | |
506 | goto p_stop; | |
507 | ||
508 | isp->video_capture.streaming = 1; | |
509 | return 0; | |
510 | p_stop: | |
511 | media_entity_pipeline_stop(me); | |
512 | return ret; | |
513 | } | |
514 | ||
515 | static int isp_video_streamoff(struct file *file, void *priv, | |
516 | enum v4l2_buf_type type) | |
517 | { | |
518 | struct fimc_isp *isp = video_drvdata(file); | |
519 | struct fimc_is_video *video = &isp->video_capture; | |
520 | int ret; | |
521 | ||
522 | ret = vb2_ioctl_streamoff(file, priv, type); | |
523 | if (ret < 0) | |
524 | return ret; | |
525 | ||
526 | media_entity_pipeline_stop(&video->ve.vdev.entity); | |
527 | video->streaming = 0; | |
528 | return 0; | |
529 | } | |
530 | ||
531 | static int isp_video_reqbufs(struct file *file, void *priv, | |
532 | struct v4l2_requestbuffers *rb) | |
533 | { | |
534 | struct fimc_isp *isp = video_drvdata(file); | |
535 | int ret; | |
536 | ||
537 | ret = vb2_ioctl_reqbufs(file, priv, rb); | |
538 | if (ret < 0) | |
539 | return ret; | |
540 | ||
541 | if (rb->count && rb->count < FIMC_ISP_REQ_BUFS_MIN) { | |
542 | rb->count = 0; | |
543 | vb2_ioctl_reqbufs(file, priv, rb); | |
544 | ret = -ENOMEM; | |
545 | } | |
546 | ||
547 | isp->video_capture.reqbufs_count = rb->count; | |
548 | return ret; | |
549 | } | |
550 | ||
551 | static const struct v4l2_ioctl_ops isp_video_ioctl_ops = { | |
552 | .vidioc_querycap = isp_video_querycap, | |
553 | .vidioc_enum_fmt_vid_cap_mplane = isp_video_enum_fmt_mplane, | |
554 | .vidioc_try_fmt_vid_cap_mplane = isp_video_try_fmt_mplane, | |
555 | .vidioc_s_fmt_vid_cap_mplane = isp_video_s_fmt_mplane, | |
556 | .vidioc_g_fmt_vid_cap_mplane = isp_video_g_fmt_mplane, | |
557 | .vidioc_reqbufs = isp_video_reqbufs, | |
558 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
559 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, | |
560 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
561 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
562 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
563 | .vidioc_streamon = isp_video_streamon, | |
564 | .vidioc_streamoff = isp_video_streamoff, | |
565 | }; | |
566 | ||
567 | int fimc_isp_video_device_register(struct fimc_isp *isp, | |
568 | struct v4l2_device *v4l2_dev, | |
569 | enum v4l2_buf_type type) | |
570 | { | |
571 | struct vb2_queue *q = &isp->video_capture.vb_queue; | |
572 | struct fimc_is_video *iv; | |
573 | struct video_device *vdev; | |
574 | int ret; | |
575 | ||
576 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
577 | iv = &isp->video_capture; | |
578 | else | |
579 | return -ENOSYS; | |
580 | ||
581 | mutex_init(&isp->video_lock); | |
582 | INIT_LIST_HEAD(&iv->pending_buf_q); | |
583 | INIT_LIST_HEAD(&iv->active_buf_q); | |
584 | iv->format = fimc_isp_find_format(NULL, NULL, 0); | |
585 | iv->pixfmt.width = IS_DEFAULT_WIDTH; | |
586 | iv->pixfmt.height = IS_DEFAULT_HEIGHT; | |
587 | iv->pixfmt.pixelformat = iv->format->fourcc; | |
588 | iv->pixfmt.colorspace = V4L2_COLORSPACE_SRGB; | |
589 | iv->reqbufs_count = 0; | |
590 | ||
591 | memset(q, 0, sizeof(*q)); | |
592 | q->type = type; | |
593 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
594 | q->ops = &isp_video_capture_qops; | |
595 | q->mem_ops = &vb2_dma_contig_memops; | |
596 | q->buf_struct_size = sizeof(struct isp_video_buf); | |
597 | q->drv_priv = isp; | |
598 | q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; | |
599 | q->lock = &isp->video_lock; | |
600 | ||
601 | ret = vb2_queue_init(q); | |
602 | if (ret < 0) | |
603 | return ret; | |
604 | ||
605 | vdev = &iv->ve.vdev; | |
606 | memset(vdev, 0, sizeof(*vdev)); | |
607 | snprintf(vdev->name, sizeof(vdev->name), "fimc-is-isp.%s", | |
608 | type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ? | |
609 | "capture" : "output"); | |
610 | vdev->queue = q; | |
611 | vdev->fops = &isp_video_fops; | |
612 | vdev->ioctl_ops = &isp_video_ioctl_ops; | |
613 | vdev->v4l2_dev = v4l2_dev; | |
614 | vdev->minor = -1; | |
615 | vdev->release = video_device_release_empty; | |
616 | vdev->lock = &isp->video_lock; | |
617 | ||
618 | iv->pad.flags = MEDIA_PAD_FL_SINK; | |
ab22e77c | 619 | ret = media_entity_pads_init(&vdev->entity, 1, &iv->pad); |
34947b8a SN |
620 | if (ret < 0) |
621 | return ret; | |
622 | ||
623 | video_set_drvdata(vdev, isp); | |
624 | ||
625 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
626 | if (ret < 0) { | |
627 | media_entity_cleanup(&vdev->entity); | |
628 | return ret; | |
629 | } | |
630 | ||
631 | v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", | |
632 | vdev->name, video_device_node_name(vdev)); | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | void fimc_isp_video_device_unregister(struct fimc_isp *isp, | |
638 | enum v4l2_buf_type type) | |
639 | { | |
640 | struct exynos_video_entity *ve; | |
641 | ||
642 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
643 | ve = &isp->video_capture.ve; | |
644 | else | |
645 | return; | |
646 | ||
647 | mutex_lock(&isp->video_lock); | |
648 | ||
649 | if (video_is_registered(&ve->vdev)) { | |
650 | video_unregister_device(&ve->vdev); | |
651 | media_entity_cleanup(&ve->vdev.entity); | |
652 | ve->pipe = NULL; | |
653 | } | |
654 | ||
655 | mutex_unlock(&isp->video_lock); | |
656 | } |