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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> |
49b2f4c5 | 33 | #include <media/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, | |
33119e80 | 42 | const void *parg, |
34947b8a SN |
43 | unsigned int *num_buffers, unsigned int *num_planes, |
44 | unsigned int sizes[], void *allocators[]) | |
45 | { | |
33119e80 | 46 | const struct v4l2_format *pfmt = parg; |
34947b8a SN |
47 | struct fimc_isp *isp = vb2_get_drv_priv(vq); |
48 | struct v4l2_pix_format_mplane *vid_fmt = &isp->video_capture.pixfmt; | |
49 | const struct v4l2_pix_format_mplane *pixm = NULL; | |
50 | const struct fimc_fmt *fmt; | |
51 | unsigned int wh, i; | |
52 | ||
53 | if (pfmt) { | |
54 | pixm = &pfmt->fmt.pix_mp; | |
55 | fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, -1); | |
56 | wh = pixm->width * pixm->height; | |
57 | } else { | |
58 | fmt = isp->video_capture.format; | |
59 | wh = vid_fmt->width * vid_fmt->height; | |
60 | } | |
61 | ||
62 | if (fmt == NULL) | |
63 | return -EINVAL; | |
64 | ||
65 | *num_buffers = clamp_t(u32, *num_buffers, FIMC_ISP_REQ_BUFS_MIN, | |
66 | FIMC_ISP_REQ_BUFS_MAX); | |
67 | *num_planes = fmt->memplanes; | |
68 | ||
69 | for (i = 0; i < fmt->memplanes; i++) { | |
70 | unsigned int size = (wh * fmt->depth[i]) / 8; | |
71 | if (pixm) | |
72 | sizes[i] = max(size, pixm->plane_fmt[i].sizeimage); | |
73 | else | |
74 | sizes[i] = size; | |
75 | allocators[i] = isp->alloc_ctx; | |
76 | } | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
81 | static inline struct param_dma_output *__get_isp_dma2(struct fimc_is *is) | |
82 | { | |
83 | return &__get_curr_is_config(is)->isp.dma2_output; | |
84 | } | |
85 | ||
86 | static int isp_video_capture_start_streaming(struct vb2_queue *q, | |
87 | unsigned int count) | |
88 | { | |
89 | struct fimc_isp *isp = vb2_get_drv_priv(q); | |
90 | struct fimc_is *is = fimc_isp_to_is(isp); | |
91 | struct param_dma_output *dma = __get_isp_dma2(is); | |
92 | struct fimc_is_video *video = &isp->video_capture; | |
93 | int ret; | |
94 | ||
95 | if (!test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state) || | |
96 | test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) | |
97 | return 0; | |
98 | ||
99 | ||
100 | dma->cmd = DMA_OUTPUT_COMMAND_ENABLE; | |
101 | dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_ENABLE; | |
102 | dma->buffer_address = is->is_dma_p_region + | |
103 | DMA2_OUTPUT_ADDR_ARRAY_OFFS; | |
104 | dma->buffer_number = video->reqbufs_count; | |
105 | dma->dma_out_mask = video->buf_mask; | |
106 | ||
107 | isp_dbg(2, &video->ve.vdev, | |
108 | "buf_count: %d, planes: %d, dma addr table: %#x\n", | |
109 | video->buf_count, video->format->memplanes, | |
110 | dma->buffer_address); | |
111 | ||
112 | fimc_is_mem_barrier(); | |
113 | ||
114 | fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT); | |
115 | __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT); | |
116 | ||
117 | ret = fimc_is_itf_s_param(is, false); | |
118 | if (ret < 0) | |
119 | return ret; | |
120 | ||
121 | ret = fimc_pipeline_call(&video->ve, set_stream, 1); | |
122 | if (ret < 0) | |
123 | return ret; | |
124 | ||
125 | set_bit(ST_ISP_VID_CAP_STREAMING, &isp->state); | |
126 | return ret; | |
127 | } | |
128 | ||
e37559b2 | 129 | static void isp_video_capture_stop_streaming(struct vb2_queue *q) |
34947b8a SN |
130 | { |
131 | struct fimc_isp *isp = vb2_get_drv_priv(q); | |
132 | struct fimc_is *is = fimc_isp_to_is(isp); | |
133 | struct param_dma_output *dma = __get_isp_dma2(is); | |
134 | int ret; | |
135 | ||
136 | ret = fimc_pipeline_call(&isp->video_capture.ve, set_stream, 0); | |
137 | if (ret < 0) | |
e37559b2 | 138 | return; |
34947b8a SN |
139 | |
140 | dma->cmd = DMA_OUTPUT_COMMAND_DISABLE; | |
141 | dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_DISABLE; | |
142 | dma->buffer_number = 0; | |
143 | dma->buffer_address = 0; | |
144 | dma->dma_out_mask = 0; | |
145 | ||
146 | fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT); | |
147 | __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT); | |
148 | ||
149 | ret = fimc_is_itf_s_param(is, false); | |
150 | if (ret < 0) | |
151 | dev_warn(&is->pdev->dev, "%s: DMA stop failed\n", __func__); | |
152 | ||
153 | fimc_is_hw_set_isp_buf_mask(is, 0); | |
154 | ||
155 | clear_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); | |
156 | clear_bit(ST_ISP_VID_CAP_STREAMING, &isp->state); | |
157 | ||
158 | isp->video_capture.buf_count = 0; | |
34947b8a SN |
159 | } |
160 | ||
161 | static int isp_video_capture_buffer_prepare(struct vb2_buffer *vb) | |
162 | { | |
163 | struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); | |
164 | struct fimc_is_video *video = &isp->video_capture; | |
165 | int i; | |
166 | ||
167 | if (video->format == NULL) | |
168 | return -EINVAL; | |
169 | ||
170 | for (i = 0; i < video->format->memplanes; i++) { | |
171 | unsigned long size = video->pixfmt.plane_fmt[i].sizeimage; | |
172 | ||
173 | if (vb2_plane_size(vb, i) < size) { | |
174 | v4l2_err(&video->ve.vdev, | |
175 | "User buffer too small (%ld < %ld)\n", | |
176 | vb2_plane_size(vb, i), size); | |
177 | return -EINVAL; | |
178 | } | |
179 | vb2_set_plane_payload(vb, i, size); | |
180 | } | |
181 | ||
182 | /* Check if we get one of the already known buffers. */ | |
183 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { | |
184 | dma_addr_t dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0); | |
185 | int i; | |
186 | ||
187 | for (i = 0; i < video->buf_count; i++) | |
188 | if (video->buffers[i]->dma_addr[0] == dma_addr) | |
189 | return 0; | |
190 | return -ENXIO; | |
191 | } | |
192 | ||
193 | return 0; | |
194 | } | |
195 | ||
196 | static void isp_video_capture_buffer_queue(struct vb2_buffer *vb) | |
197 | { | |
2d700715 | 198 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
34947b8a SN |
199 | struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); |
200 | struct fimc_is_video *video = &isp->video_capture; | |
201 | struct fimc_is *is = fimc_isp_to_is(isp); | |
2d700715 | 202 | struct isp_video_buf *ivb = to_isp_video_buf(vbuf); |
34947b8a SN |
203 | unsigned long flags; |
204 | unsigned int i; | |
205 | ||
206 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { | |
207 | spin_lock_irqsave(&is->slock, flags); | |
208 | video->buf_mask |= BIT(ivb->index); | |
209 | spin_unlock_irqrestore(&is->slock, flags); | |
210 | } else { | |
211 | unsigned int num_planes = video->format->memplanes; | |
212 | ||
213 | ivb->index = video->buf_count; | |
214 | video->buffers[ivb->index] = ivb; | |
215 | ||
216 | for (i = 0; i < num_planes; i++) { | |
217 | int buf_index = ivb->index * num_planes + i; | |
218 | ||
219 | ivb->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i); | |
220 | is->is_p_region->shared[32 + buf_index] = | |
221 | ivb->dma_addr[i]; | |
222 | ||
223 | isp_dbg(2, &video->ve.vdev, | |
7d4020c3 | 224 | "dma_buf %pad (%d/%d/%d) addr: %pad\n", |
2d700715 | 225 | &buf_index, ivb->index, i, vb->index, |
7d4020c3 | 226 | &ivb->dma_addr[i]); |
34947b8a SN |
227 | } |
228 | ||
229 | if (++video->buf_count < video->reqbufs_count) | |
230 | return; | |
231 | ||
232 | video->buf_mask = (1UL << video->buf_count) - 1; | |
233 | set_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); | |
234 | } | |
235 | ||
236 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) | |
237 | isp_video_capture_start_streaming(vb->vb2_queue, 0); | |
238 | } | |
239 | ||
240 | /* | |
241 | * FIMC-IS ISP input and output DMA interface interrupt handler. | |
242 | * Locking: called with is->slock spinlock held. | |
243 | */ | |
244 | void fimc_isp_video_irq_handler(struct fimc_is *is) | |
245 | { | |
246 | struct fimc_is_video *video = &is->isp.video_capture; | |
2d700715 | 247 | struct vb2_v4l2_buffer *vbuf; |
34947b8a SN |
248 | int buf_index; |
249 | ||
250 | /* TODO: Ensure the DMA is really stopped in stop_streaming callback */ | |
251 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &is->isp.state)) | |
252 | return; | |
253 | ||
254 | buf_index = (is->i2h_cmd.args[1] - 1) % video->buf_count; | |
2d700715 | 255 | vbuf = &video->buffers[buf_index]->vb; |
34947b8a | 256 | |
2d700715 JS |
257 | v4l2_get_timestamp(&vbuf->timestamp); |
258 | vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_DONE); | |
34947b8a SN |
259 | |
260 | video->buf_mask &= ~BIT(buf_index); | |
261 | fimc_is_hw_set_isp_buf_mask(is, video->buf_mask); | |
262 | } | |
263 | ||
264 | static const struct vb2_ops isp_video_capture_qops = { | |
265 | .queue_setup = isp_video_capture_queue_setup, | |
266 | .buf_prepare = isp_video_capture_buffer_prepare, | |
267 | .buf_queue = isp_video_capture_buffer_queue, | |
268 | .wait_prepare = vb2_ops_wait_prepare, | |
269 | .wait_finish = vb2_ops_wait_finish, | |
270 | .start_streaming = isp_video_capture_start_streaming, | |
271 | .stop_streaming = isp_video_capture_stop_streaming, | |
272 | }; | |
273 | ||
274 | static int isp_video_open(struct file *file) | |
275 | { | |
276 | struct fimc_isp *isp = video_drvdata(file); | |
277 | struct exynos_video_entity *ve = &isp->video_capture.ve; | |
278 | struct media_entity *me = &ve->vdev.entity; | |
279 | int ret; | |
280 | ||
281 | if (mutex_lock_interruptible(&isp->video_lock)) | |
282 | return -ERESTARTSYS; | |
283 | ||
284 | ret = v4l2_fh_open(file); | |
285 | if (ret < 0) | |
286 | goto unlock; | |
287 | ||
288 | ret = pm_runtime_get_sync(&isp->pdev->dev); | |
289 | if (ret < 0) | |
290 | goto rel_fh; | |
291 | ||
292 | if (v4l2_fh_is_singular_file(file)) { | |
293 | mutex_lock(&me->parent->graph_mutex); | |
294 | ||
295 | ret = fimc_pipeline_call(ve, open, me, true); | |
296 | ||
297 | /* Mark the video pipeline as in use. */ | |
298 | if (ret == 0) | |
299 | me->use_count++; | |
300 | ||
301 | mutex_unlock(&me->parent->graph_mutex); | |
302 | } | |
303 | if (!ret) | |
304 | goto unlock; | |
305 | rel_fh: | |
306 | v4l2_fh_release(file); | |
307 | unlock: | |
308 | mutex_unlock(&isp->video_lock); | |
309 | return ret; | |
310 | } | |
311 | ||
312 | static int isp_video_release(struct file *file) | |
313 | { | |
314 | struct fimc_isp *isp = video_drvdata(file); | |
315 | struct fimc_is_video *ivc = &isp->video_capture; | |
316 | struct media_entity *entity = &ivc->ve.vdev.entity; | |
317 | struct media_device *mdev = entity->parent; | |
34947b8a SN |
318 | |
319 | mutex_lock(&isp->video_lock); | |
320 | ||
321 | if (v4l2_fh_is_singular_file(file) && ivc->streaming) { | |
322 | media_entity_pipeline_stop(entity); | |
323 | ivc->streaming = 0; | |
324 | } | |
325 | ||
326 | vb2_fop_release(file); | |
327 | ||
328 | if (v4l2_fh_is_singular_file(file)) { | |
329 | fimc_pipeline_call(&ivc->ve, close); | |
330 | ||
331 | mutex_lock(&mdev->graph_mutex); | |
332 | entity->use_count--; | |
333 | mutex_unlock(&mdev->graph_mutex); | |
334 | } | |
335 | ||
336 | pm_runtime_put(&isp->pdev->dev); | |
337 | mutex_unlock(&isp->video_lock); | |
338 | ||
6cf77d18 | 339 | return 0; |
34947b8a SN |
340 | } |
341 | ||
342 | static const struct v4l2_file_operations isp_video_fops = { | |
343 | .owner = THIS_MODULE, | |
344 | .open = isp_video_open, | |
345 | .release = isp_video_release, | |
346 | .poll = vb2_fop_poll, | |
347 | .unlocked_ioctl = video_ioctl2, | |
348 | .mmap = vb2_fop_mmap, | |
349 | }; | |
350 | ||
351 | /* | |
352 | * Video node ioctl operations | |
353 | */ | |
354 | static int isp_video_querycap(struct file *file, void *priv, | |
355 | struct v4l2_capability *cap) | |
356 | { | |
357 | struct fimc_isp *isp = video_drvdata(file); | |
358 | ||
359 | __fimc_vidioc_querycap(&isp->pdev->dev, cap, V4L2_CAP_STREAMING); | |
360 | return 0; | |
361 | } | |
362 | ||
363 | static int isp_video_enum_fmt_mplane(struct file *file, void *priv, | |
364 | struct v4l2_fmtdesc *f) | |
365 | { | |
366 | const struct fimc_fmt *fmt; | |
367 | ||
368 | if (f->index >= FIMC_ISP_NUM_FORMATS) | |
369 | return -EINVAL; | |
370 | ||
371 | fmt = fimc_isp_find_format(NULL, NULL, f->index); | |
372 | if (WARN_ON(fmt == NULL)) | |
373 | return -EINVAL; | |
374 | ||
375 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
376 | f->pixelformat = fmt->fourcc; | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | static int isp_video_g_fmt_mplane(struct file *file, void *fh, | |
382 | struct v4l2_format *f) | |
383 | { | |
384 | struct fimc_isp *isp = video_drvdata(file); | |
385 | ||
386 | f->fmt.pix_mp = isp->video_capture.pixfmt; | |
387 | return 0; | |
388 | } | |
389 | ||
390 | static void __isp_video_try_fmt(struct fimc_isp *isp, | |
391 | struct v4l2_pix_format_mplane *pixm, | |
392 | const struct fimc_fmt **fmt) | |
393 | { | |
394 | *fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, 2); | |
395 | ||
396 | pixm->colorspace = V4L2_COLORSPACE_SRGB; | |
397 | pixm->field = V4L2_FIELD_NONE; | |
398 | pixm->num_planes = (*fmt)->memplanes; | |
399 | pixm->pixelformat = (*fmt)->fourcc; | |
400 | /* | |
401 | * TODO: double check with the docmentation these width/height | |
402 | * constraints are correct. | |
403 | */ | |
404 | v4l_bound_align_image(&pixm->width, FIMC_ISP_SOURCE_WIDTH_MIN, | |
405 | FIMC_ISP_SOURCE_WIDTH_MAX, 3, | |
406 | &pixm->height, FIMC_ISP_SOURCE_HEIGHT_MIN, | |
407 | FIMC_ISP_SOURCE_HEIGHT_MAX, 0, 0); | |
408 | } | |
409 | ||
410 | static int isp_video_try_fmt_mplane(struct file *file, void *fh, | |
411 | struct v4l2_format *f) | |
412 | { | |
413 | struct fimc_isp *isp = video_drvdata(file); | |
414 | ||
415 | __isp_video_try_fmt(isp, &f->fmt.pix_mp, NULL); | |
416 | return 0; | |
417 | } | |
418 | ||
419 | static int isp_video_s_fmt_mplane(struct file *file, void *priv, | |
420 | struct v4l2_format *f) | |
421 | { | |
422 | struct fimc_isp *isp = video_drvdata(file); | |
423 | struct fimc_is *is = fimc_isp_to_is(isp); | |
424 | struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; | |
425 | const struct fimc_fmt *ifmt = NULL; | |
426 | struct param_dma_output *dma = __get_isp_dma2(is); | |
427 | ||
428 | __isp_video_try_fmt(isp, pixm, &ifmt); | |
429 | ||
430 | if (WARN_ON(ifmt == NULL)) | |
431 | return -EINVAL; | |
432 | ||
433 | dma->format = DMA_OUTPUT_FORMAT_BAYER; | |
434 | dma->order = DMA_OUTPUT_ORDER_GB_BG; | |
435 | dma->plane = ifmt->memplanes; | |
436 | dma->bitwidth = ifmt->depth[0]; | |
437 | dma->width = pixm->width; | |
438 | dma->height = pixm->height; | |
439 | ||
440 | fimc_is_mem_barrier(); | |
441 | ||
442 | isp->video_capture.format = ifmt; | |
443 | isp->video_capture.pixfmt = *pixm; | |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
448 | /* | |
449 | * Check for source/sink format differences at each link. | |
450 | * Return 0 if the formats match or -EPIPE otherwise. | |
451 | */ | |
452 | static int isp_video_pipeline_validate(struct fimc_isp *isp) | |
453 | { | |
454 | struct v4l2_subdev *sd = &isp->subdev; | |
455 | struct v4l2_subdev_format sink_fmt, src_fmt; | |
456 | struct media_pad *pad; | |
457 | int ret; | |
458 | ||
459 | while (1) { | |
460 | /* Retrieve format at the sink pad */ | |
461 | pad = &sd->entity.pads[0]; | |
462 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) | |
463 | break; | |
464 | sink_fmt.pad = pad->index; | |
465 | sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
466 | ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); | |
467 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
468 | return -EPIPE; | |
469 | ||
470 | /* Retrieve format at the source pad */ | |
471 | pad = media_entity_remote_pad(pad); | |
472 | if (pad == NULL || | |
473 | media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) | |
474 | break; | |
475 | ||
476 | sd = media_entity_to_v4l2_subdev(pad->entity); | |
477 | src_fmt.pad = pad->index; | |
478 | src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
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 | struct media_entity *me = &ve->vdev.entity; | |
498 | int ret; | |
499 | ||
500 | ret = media_entity_pipeline_start(me, &ve->pipe->mp); | |
501 | if (ret < 0) | |
502 | return ret; | |
503 | ||
504 | ret = isp_video_pipeline_validate(isp); | |
505 | if (ret < 0) | |
506 | goto p_stop; | |
507 | ||
508 | ret = vb2_ioctl_streamon(file, priv, type); | |
509 | if (ret < 0) | |
510 | goto p_stop; | |
511 | ||
512 | isp->video_capture.streaming = 1; | |
513 | return 0; | |
514 | p_stop: | |
515 | media_entity_pipeline_stop(me); | |
516 | return ret; | |
517 | } | |
518 | ||
519 | static int isp_video_streamoff(struct file *file, void *priv, | |
520 | enum v4l2_buf_type type) | |
521 | { | |
522 | struct fimc_isp *isp = video_drvdata(file); | |
523 | struct fimc_is_video *video = &isp->video_capture; | |
524 | int ret; | |
525 | ||
526 | ret = vb2_ioctl_streamoff(file, priv, type); | |
527 | if (ret < 0) | |
528 | return ret; | |
529 | ||
530 | media_entity_pipeline_stop(&video->ve.vdev.entity); | |
531 | video->streaming = 0; | |
532 | return 0; | |
533 | } | |
534 | ||
535 | static int isp_video_reqbufs(struct file *file, void *priv, | |
536 | struct v4l2_requestbuffers *rb) | |
537 | { | |
538 | struct fimc_isp *isp = video_drvdata(file); | |
539 | int ret; | |
540 | ||
541 | ret = vb2_ioctl_reqbufs(file, priv, rb); | |
542 | if (ret < 0) | |
543 | return ret; | |
544 | ||
545 | if (rb->count && rb->count < FIMC_ISP_REQ_BUFS_MIN) { | |
546 | rb->count = 0; | |
547 | vb2_ioctl_reqbufs(file, priv, rb); | |
548 | ret = -ENOMEM; | |
549 | } | |
550 | ||
551 | isp->video_capture.reqbufs_count = rb->count; | |
552 | return ret; | |
553 | } | |
554 | ||
555 | static const struct v4l2_ioctl_ops isp_video_ioctl_ops = { | |
556 | .vidioc_querycap = isp_video_querycap, | |
557 | .vidioc_enum_fmt_vid_cap_mplane = isp_video_enum_fmt_mplane, | |
558 | .vidioc_try_fmt_vid_cap_mplane = isp_video_try_fmt_mplane, | |
559 | .vidioc_s_fmt_vid_cap_mplane = isp_video_s_fmt_mplane, | |
560 | .vidioc_g_fmt_vid_cap_mplane = isp_video_g_fmt_mplane, | |
561 | .vidioc_reqbufs = isp_video_reqbufs, | |
562 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
563 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, | |
564 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
565 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
566 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
567 | .vidioc_streamon = isp_video_streamon, | |
568 | .vidioc_streamoff = isp_video_streamoff, | |
569 | }; | |
570 | ||
571 | int fimc_isp_video_device_register(struct fimc_isp *isp, | |
572 | struct v4l2_device *v4l2_dev, | |
573 | enum v4l2_buf_type type) | |
574 | { | |
575 | struct vb2_queue *q = &isp->video_capture.vb_queue; | |
576 | struct fimc_is_video *iv; | |
577 | struct video_device *vdev; | |
578 | int ret; | |
579 | ||
580 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
581 | iv = &isp->video_capture; | |
582 | else | |
583 | return -ENOSYS; | |
584 | ||
585 | mutex_init(&isp->video_lock); | |
586 | INIT_LIST_HEAD(&iv->pending_buf_q); | |
587 | INIT_LIST_HEAD(&iv->active_buf_q); | |
588 | iv->format = fimc_isp_find_format(NULL, NULL, 0); | |
589 | iv->pixfmt.width = IS_DEFAULT_WIDTH; | |
590 | iv->pixfmt.height = IS_DEFAULT_HEIGHT; | |
591 | iv->pixfmt.pixelformat = iv->format->fourcc; | |
592 | iv->pixfmt.colorspace = V4L2_COLORSPACE_SRGB; | |
593 | iv->reqbufs_count = 0; | |
594 | ||
595 | memset(q, 0, sizeof(*q)); | |
596 | q->type = type; | |
597 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
598 | q->ops = &isp_video_capture_qops; | |
599 | q->mem_ops = &vb2_dma_contig_memops; | |
600 | q->buf_struct_size = sizeof(struct isp_video_buf); | |
601 | q->drv_priv = isp; | |
602 | q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; | |
603 | q->lock = &isp->video_lock; | |
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 | snprintf(vdev->name, sizeof(vdev->name), "fimc-is-isp.%s", | |
612 | type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ? | |
613 | "capture" : "output"); | |
614 | vdev->queue = q; | |
615 | vdev->fops = &isp_video_fops; | |
616 | vdev->ioctl_ops = &isp_video_ioctl_ops; | |
617 | vdev->v4l2_dev = v4l2_dev; | |
618 | vdev->minor = -1; | |
619 | vdev->release = video_device_release_empty; | |
620 | vdev->lock = &isp->video_lock; | |
621 | ||
622 | iv->pad.flags = MEDIA_PAD_FL_SINK; | |
623 | ret = media_entity_init(&vdev->entity, 1, &iv->pad, 0); | |
624 | if (ret < 0) | |
625 | return ret; | |
626 | ||
627 | video_set_drvdata(vdev, isp); | |
628 | ||
629 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
630 | if (ret < 0) { | |
631 | media_entity_cleanup(&vdev->entity); | |
632 | return ret; | |
633 | } | |
634 | ||
635 | v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", | |
636 | vdev->name, video_device_node_name(vdev)); | |
637 | ||
638 | return 0; | |
639 | } | |
640 | ||
641 | void fimc_isp_video_device_unregister(struct fimc_isp *isp, | |
642 | enum v4l2_buf_type type) | |
643 | { | |
644 | struct exynos_video_entity *ve; | |
645 | ||
646 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
647 | ve = &isp->video_capture.ve; | |
648 | else | |
649 | return; | |
650 | ||
651 | mutex_lock(&isp->video_lock); | |
652 | ||
653 | if (video_is_registered(&ve->vdev)) { | |
654 | video_unregister_device(&ve->vdev); | |
655 | media_entity_cleanup(&ve->vdev.entity); | |
656 | ve->pipe = NULL; | |
657 | } | |
658 | ||
659 | mutex_unlock(&isp->video_lock); | |
660 | } |