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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> | |
31 | #include <media/videobuf2-core.h> | |
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, | |
42 | const struct v4l2_format *pfmt, | |
43 | unsigned int *num_buffers, unsigned int *num_planes, | |
44 | unsigned int sizes[], void *allocators[]) | |
45 | { | |
46 | struct fimc_isp *isp = vb2_get_drv_priv(vq); | |
47 | struct v4l2_pix_format_mplane *vid_fmt = &isp->video_capture.pixfmt; | |
48 | const struct v4l2_pix_format_mplane *pixm = NULL; | |
49 | const struct fimc_fmt *fmt; | |
50 | unsigned int wh, i; | |
51 | ||
52 | if (pfmt) { | |
53 | pixm = &pfmt->fmt.pix_mp; | |
54 | fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, -1); | |
55 | wh = pixm->width * pixm->height; | |
56 | } else { | |
57 | fmt = isp->video_capture.format; | |
58 | wh = vid_fmt->width * vid_fmt->height; | |
59 | } | |
60 | ||
61 | if (fmt == NULL) | |
62 | return -EINVAL; | |
63 | ||
64 | *num_buffers = clamp_t(u32, *num_buffers, FIMC_ISP_REQ_BUFS_MIN, | |
65 | FIMC_ISP_REQ_BUFS_MAX); | |
66 | *num_planes = fmt->memplanes; | |
67 | ||
68 | for (i = 0; i < fmt->memplanes; i++) { | |
69 | unsigned int size = (wh * fmt->depth[i]) / 8; | |
70 | if (pixm) | |
71 | sizes[i] = max(size, pixm->plane_fmt[i].sizeimage); | |
72 | else | |
73 | sizes[i] = size; | |
74 | allocators[i] = isp->alloc_ctx; | |
75 | } | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | static inline struct param_dma_output *__get_isp_dma2(struct fimc_is *is) | |
81 | { | |
82 | return &__get_curr_is_config(is)->isp.dma2_output; | |
83 | } | |
84 | ||
85 | static int isp_video_capture_start_streaming(struct vb2_queue *q, | |
86 | unsigned int count) | |
87 | { | |
88 | struct fimc_isp *isp = vb2_get_drv_priv(q); | |
89 | struct fimc_is *is = fimc_isp_to_is(isp); | |
90 | struct param_dma_output *dma = __get_isp_dma2(is); | |
91 | struct fimc_is_video *video = &isp->video_capture; | |
92 | int ret; | |
93 | ||
94 | if (!test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state) || | |
95 | test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) | |
96 | return 0; | |
97 | ||
98 | ||
99 | dma->cmd = DMA_OUTPUT_COMMAND_ENABLE; | |
100 | dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_ENABLE; | |
101 | dma->buffer_address = is->is_dma_p_region + | |
102 | DMA2_OUTPUT_ADDR_ARRAY_OFFS; | |
103 | dma->buffer_number = video->reqbufs_count; | |
104 | dma->dma_out_mask = video->buf_mask; | |
105 | ||
106 | isp_dbg(2, &video->ve.vdev, | |
107 | "buf_count: %d, planes: %d, dma addr table: %#x\n", | |
108 | video->buf_count, video->format->memplanes, | |
109 | dma->buffer_address); | |
110 | ||
111 | fimc_is_mem_barrier(); | |
112 | ||
113 | fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT); | |
114 | __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT); | |
115 | ||
116 | ret = fimc_is_itf_s_param(is, false); | |
117 | if (ret < 0) | |
118 | return ret; | |
119 | ||
120 | ret = fimc_pipeline_call(&video->ve, set_stream, 1); | |
121 | if (ret < 0) | |
122 | return ret; | |
123 | ||
124 | set_bit(ST_ISP_VID_CAP_STREAMING, &isp->state); | |
125 | return ret; | |
126 | } | |
127 | ||
e37559b2 | 128 | static void isp_video_capture_stop_streaming(struct vb2_queue *q) |
34947b8a SN |
129 | { |
130 | struct fimc_isp *isp = vb2_get_drv_priv(q); | |
131 | struct fimc_is *is = fimc_isp_to_is(isp); | |
132 | struct param_dma_output *dma = __get_isp_dma2(is); | |
133 | int ret; | |
134 | ||
135 | ret = fimc_pipeline_call(&isp->video_capture.ve, set_stream, 0); | |
136 | if (ret < 0) | |
e37559b2 | 137 | return; |
34947b8a SN |
138 | |
139 | dma->cmd = DMA_OUTPUT_COMMAND_DISABLE; | |
140 | dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_DISABLE; | |
141 | dma->buffer_number = 0; | |
142 | dma->buffer_address = 0; | |
143 | dma->dma_out_mask = 0; | |
144 | ||
145 | fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT); | |
146 | __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT); | |
147 | ||
148 | ret = fimc_is_itf_s_param(is, false); | |
149 | if (ret < 0) | |
150 | dev_warn(&is->pdev->dev, "%s: DMA stop failed\n", __func__); | |
151 | ||
152 | fimc_is_hw_set_isp_buf_mask(is, 0); | |
153 | ||
154 | clear_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); | |
155 | clear_bit(ST_ISP_VID_CAP_STREAMING, &isp->state); | |
156 | ||
157 | isp->video_capture.buf_count = 0; | |
34947b8a SN |
158 | } |
159 | ||
160 | static int isp_video_capture_buffer_prepare(struct vb2_buffer *vb) | |
161 | { | |
162 | struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); | |
163 | struct fimc_is_video *video = &isp->video_capture; | |
164 | int i; | |
165 | ||
166 | if (video->format == NULL) | |
167 | return -EINVAL; | |
168 | ||
169 | for (i = 0; i < video->format->memplanes; i++) { | |
170 | unsigned long size = video->pixfmt.plane_fmt[i].sizeimage; | |
171 | ||
172 | if (vb2_plane_size(vb, i) < size) { | |
173 | v4l2_err(&video->ve.vdev, | |
174 | "User buffer too small (%ld < %ld)\n", | |
175 | vb2_plane_size(vb, i), size); | |
176 | return -EINVAL; | |
177 | } | |
178 | vb2_set_plane_payload(vb, i, size); | |
179 | } | |
180 | ||
181 | /* Check if we get one of the already known buffers. */ | |
182 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { | |
183 | dma_addr_t dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0); | |
184 | int i; | |
185 | ||
186 | for (i = 0; i < video->buf_count; i++) | |
187 | if (video->buffers[i]->dma_addr[0] == dma_addr) | |
188 | return 0; | |
189 | return -ENXIO; | |
190 | } | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
195 | static void isp_video_capture_buffer_queue(struct vb2_buffer *vb) | |
196 | { | |
197 | struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); | |
198 | struct fimc_is_video *video = &isp->video_capture; | |
199 | struct fimc_is *is = fimc_isp_to_is(isp); | |
200 | struct isp_video_buf *ivb = to_isp_video_buf(vb); | |
201 | unsigned long flags; | |
202 | unsigned int i; | |
203 | ||
204 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { | |
205 | spin_lock_irqsave(&is->slock, flags); | |
206 | video->buf_mask |= BIT(ivb->index); | |
207 | spin_unlock_irqrestore(&is->slock, flags); | |
208 | } else { | |
209 | unsigned int num_planes = video->format->memplanes; | |
210 | ||
211 | ivb->index = video->buf_count; | |
212 | video->buffers[ivb->index] = ivb; | |
213 | ||
214 | for (i = 0; i < num_planes; i++) { | |
215 | int buf_index = ivb->index * num_planes + i; | |
216 | ||
217 | ivb->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i); | |
218 | is->is_p_region->shared[32 + buf_index] = | |
219 | ivb->dma_addr[i]; | |
220 | ||
221 | isp_dbg(2, &video->ve.vdev, | |
222 | "dma_buf %d (%d/%d/%d) addr: %#x\n", | |
223 | buf_index, ivb->index, i, vb->v4l2_buf.index, | |
224 | ivb->dma_addr[i]); | |
225 | } | |
226 | ||
227 | if (++video->buf_count < video->reqbufs_count) | |
228 | return; | |
229 | ||
230 | video->buf_mask = (1UL << video->buf_count) - 1; | |
231 | set_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); | |
232 | } | |
233 | ||
234 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) | |
235 | isp_video_capture_start_streaming(vb->vb2_queue, 0); | |
236 | } | |
237 | ||
238 | /* | |
239 | * FIMC-IS ISP input and output DMA interface interrupt handler. | |
240 | * Locking: called with is->slock spinlock held. | |
241 | */ | |
242 | void fimc_isp_video_irq_handler(struct fimc_is *is) | |
243 | { | |
244 | struct fimc_is_video *video = &is->isp.video_capture; | |
245 | struct vb2_buffer *vb; | |
246 | int buf_index; | |
247 | ||
248 | /* TODO: Ensure the DMA is really stopped in stop_streaming callback */ | |
249 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &is->isp.state)) | |
250 | return; | |
251 | ||
252 | buf_index = (is->i2h_cmd.args[1] - 1) % video->buf_count; | |
253 | vb = &video->buffers[buf_index]->vb; | |
254 | ||
255 | v4l2_get_timestamp(&vb->v4l2_buf.timestamp); | |
256 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | |
257 | ||
258 | video->buf_mask &= ~BIT(buf_index); | |
259 | fimc_is_hw_set_isp_buf_mask(is, video->buf_mask); | |
260 | } | |
261 | ||
262 | static const struct vb2_ops isp_video_capture_qops = { | |
263 | .queue_setup = isp_video_capture_queue_setup, | |
264 | .buf_prepare = isp_video_capture_buffer_prepare, | |
265 | .buf_queue = isp_video_capture_buffer_queue, | |
266 | .wait_prepare = vb2_ops_wait_prepare, | |
267 | .wait_finish = vb2_ops_wait_finish, | |
268 | .start_streaming = isp_video_capture_start_streaming, | |
269 | .stop_streaming = isp_video_capture_stop_streaming, | |
270 | }; | |
271 | ||
272 | static int isp_video_open(struct file *file) | |
273 | { | |
274 | struct fimc_isp *isp = video_drvdata(file); | |
275 | struct exynos_video_entity *ve = &isp->video_capture.ve; | |
276 | struct media_entity *me = &ve->vdev.entity; | |
277 | int ret; | |
278 | ||
279 | if (mutex_lock_interruptible(&isp->video_lock)) | |
280 | return -ERESTARTSYS; | |
281 | ||
282 | ret = v4l2_fh_open(file); | |
283 | if (ret < 0) | |
284 | goto unlock; | |
285 | ||
286 | ret = pm_runtime_get_sync(&isp->pdev->dev); | |
287 | if (ret < 0) | |
288 | goto rel_fh; | |
289 | ||
290 | if (v4l2_fh_is_singular_file(file)) { | |
291 | mutex_lock(&me->parent->graph_mutex); | |
292 | ||
293 | ret = fimc_pipeline_call(ve, open, me, true); | |
294 | ||
295 | /* Mark the video pipeline as in use. */ | |
296 | if (ret == 0) | |
297 | me->use_count++; | |
298 | ||
299 | mutex_unlock(&me->parent->graph_mutex); | |
300 | } | |
301 | if (!ret) | |
302 | goto unlock; | |
303 | rel_fh: | |
304 | v4l2_fh_release(file); | |
305 | unlock: | |
306 | mutex_unlock(&isp->video_lock); | |
307 | return ret; | |
308 | } | |
309 | ||
310 | static int isp_video_release(struct file *file) | |
311 | { | |
312 | struct fimc_isp *isp = video_drvdata(file); | |
313 | struct fimc_is_video *ivc = &isp->video_capture; | |
314 | struct media_entity *entity = &ivc->ve.vdev.entity; | |
315 | struct media_device *mdev = entity->parent; | |
34947b8a SN |
316 | |
317 | mutex_lock(&isp->video_lock); | |
318 | ||
319 | if (v4l2_fh_is_singular_file(file) && ivc->streaming) { | |
320 | media_entity_pipeline_stop(entity); | |
321 | ivc->streaming = 0; | |
322 | } | |
323 | ||
324 | vb2_fop_release(file); | |
325 | ||
326 | if (v4l2_fh_is_singular_file(file)) { | |
327 | fimc_pipeline_call(&ivc->ve, close); | |
328 | ||
329 | mutex_lock(&mdev->graph_mutex); | |
330 | entity->use_count--; | |
331 | mutex_unlock(&mdev->graph_mutex); | |
332 | } | |
333 | ||
334 | pm_runtime_put(&isp->pdev->dev); | |
335 | mutex_unlock(&isp->video_lock); | |
336 | ||
6cf77d18 | 337 | return 0; |
34947b8a SN |
338 | } |
339 | ||
340 | static const struct v4l2_file_operations isp_video_fops = { | |
341 | .owner = THIS_MODULE, | |
342 | .open = isp_video_open, | |
343 | .release = isp_video_release, | |
344 | .poll = vb2_fop_poll, | |
345 | .unlocked_ioctl = video_ioctl2, | |
346 | .mmap = vb2_fop_mmap, | |
347 | }; | |
348 | ||
349 | /* | |
350 | * Video node ioctl operations | |
351 | */ | |
352 | static int isp_video_querycap(struct file *file, void *priv, | |
353 | struct v4l2_capability *cap) | |
354 | { | |
355 | struct fimc_isp *isp = video_drvdata(file); | |
356 | ||
357 | __fimc_vidioc_querycap(&isp->pdev->dev, cap, V4L2_CAP_STREAMING); | |
358 | return 0; | |
359 | } | |
360 | ||
361 | static int isp_video_enum_fmt_mplane(struct file *file, void *priv, | |
362 | struct v4l2_fmtdesc *f) | |
363 | { | |
364 | const struct fimc_fmt *fmt; | |
365 | ||
366 | if (f->index >= FIMC_ISP_NUM_FORMATS) | |
367 | return -EINVAL; | |
368 | ||
369 | fmt = fimc_isp_find_format(NULL, NULL, f->index); | |
370 | if (WARN_ON(fmt == NULL)) | |
371 | return -EINVAL; | |
372 | ||
373 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
374 | f->pixelformat = fmt->fourcc; | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int isp_video_g_fmt_mplane(struct file *file, void *fh, | |
380 | struct v4l2_format *f) | |
381 | { | |
382 | struct fimc_isp *isp = video_drvdata(file); | |
383 | ||
384 | f->fmt.pix_mp = isp->video_capture.pixfmt; | |
385 | return 0; | |
386 | } | |
387 | ||
388 | static void __isp_video_try_fmt(struct fimc_isp *isp, | |
389 | struct v4l2_pix_format_mplane *pixm, | |
390 | const struct fimc_fmt **fmt) | |
391 | { | |
392 | *fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, 2); | |
393 | ||
394 | pixm->colorspace = V4L2_COLORSPACE_SRGB; | |
395 | pixm->field = V4L2_FIELD_NONE; | |
396 | pixm->num_planes = (*fmt)->memplanes; | |
397 | pixm->pixelformat = (*fmt)->fourcc; | |
398 | /* | |
399 | * TODO: double check with the docmentation these width/height | |
400 | * constraints are correct. | |
401 | */ | |
402 | v4l_bound_align_image(&pixm->width, FIMC_ISP_SOURCE_WIDTH_MIN, | |
403 | FIMC_ISP_SOURCE_WIDTH_MAX, 3, | |
404 | &pixm->height, FIMC_ISP_SOURCE_HEIGHT_MIN, | |
405 | FIMC_ISP_SOURCE_HEIGHT_MAX, 0, 0); | |
406 | } | |
407 | ||
408 | static int isp_video_try_fmt_mplane(struct file *file, void *fh, | |
409 | struct v4l2_format *f) | |
410 | { | |
411 | struct fimc_isp *isp = video_drvdata(file); | |
412 | ||
413 | __isp_video_try_fmt(isp, &f->fmt.pix_mp, NULL); | |
414 | return 0; | |
415 | } | |
416 | ||
417 | static int isp_video_s_fmt_mplane(struct file *file, void *priv, | |
418 | struct v4l2_format *f) | |
419 | { | |
420 | struct fimc_isp *isp = video_drvdata(file); | |
421 | struct fimc_is *is = fimc_isp_to_is(isp); | |
422 | struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; | |
423 | const struct fimc_fmt *ifmt = NULL; | |
424 | struct param_dma_output *dma = __get_isp_dma2(is); | |
425 | ||
426 | __isp_video_try_fmt(isp, pixm, &ifmt); | |
427 | ||
428 | if (WARN_ON(ifmt == NULL)) | |
429 | return -EINVAL; | |
430 | ||
431 | dma->format = DMA_OUTPUT_FORMAT_BAYER; | |
432 | dma->order = DMA_OUTPUT_ORDER_GB_BG; | |
433 | dma->plane = ifmt->memplanes; | |
434 | dma->bitwidth = ifmt->depth[0]; | |
435 | dma->width = pixm->width; | |
436 | dma->height = pixm->height; | |
437 | ||
438 | fimc_is_mem_barrier(); | |
439 | ||
440 | isp->video_capture.format = ifmt; | |
441 | isp->video_capture.pixfmt = *pixm; | |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
446 | /* | |
447 | * Check for source/sink format differences at each link. | |
448 | * Return 0 if the formats match or -EPIPE otherwise. | |
449 | */ | |
450 | static int isp_video_pipeline_validate(struct fimc_isp *isp) | |
451 | { | |
452 | struct v4l2_subdev *sd = &isp->subdev; | |
453 | struct v4l2_subdev_format sink_fmt, src_fmt; | |
454 | struct media_pad *pad; | |
455 | int ret; | |
456 | ||
457 | while (1) { | |
458 | /* Retrieve format at the sink pad */ | |
459 | pad = &sd->entity.pads[0]; | |
460 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) | |
461 | break; | |
462 | sink_fmt.pad = pad->index; | |
463 | sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
464 | ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); | |
465 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
466 | return -EPIPE; | |
467 | ||
468 | /* Retrieve format at the source pad */ | |
469 | pad = media_entity_remote_pad(pad); | |
470 | if (pad == NULL || | |
471 | media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) | |
472 | break; | |
473 | ||
474 | sd = media_entity_to_v4l2_subdev(pad->entity); | |
475 | src_fmt.pad = pad->index; | |
476 | src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
477 | ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); | |
478 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
479 | return -EPIPE; | |
480 | ||
481 | if (src_fmt.format.width != sink_fmt.format.width || | |
482 | src_fmt.format.height != sink_fmt.format.height || | |
483 | src_fmt.format.code != sink_fmt.format.code) | |
484 | return -EPIPE; | |
485 | } | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
490 | static int isp_video_streamon(struct file *file, void *priv, | |
491 | enum v4l2_buf_type type) | |
492 | { | |
493 | struct fimc_isp *isp = video_drvdata(file); | |
494 | struct exynos_video_entity *ve = &isp->video_capture.ve; | |
495 | struct media_entity *me = &ve->vdev.entity; | |
496 | int ret; | |
497 | ||
498 | ret = media_entity_pipeline_start(me, &ve->pipe->mp); | |
499 | if (ret < 0) | |
500 | return ret; | |
501 | ||
502 | ret = isp_video_pipeline_validate(isp); | |
503 | if (ret < 0) | |
504 | goto p_stop; | |
505 | ||
506 | ret = vb2_ioctl_streamon(file, priv, type); | |
507 | if (ret < 0) | |
508 | goto p_stop; | |
509 | ||
510 | isp->video_capture.streaming = 1; | |
511 | return 0; | |
512 | p_stop: | |
513 | media_entity_pipeline_stop(me); | |
514 | return ret; | |
515 | } | |
516 | ||
517 | static int isp_video_streamoff(struct file *file, void *priv, | |
518 | enum v4l2_buf_type type) | |
519 | { | |
520 | struct fimc_isp *isp = video_drvdata(file); | |
521 | struct fimc_is_video *video = &isp->video_capture; | |
522 | int ret; | |
523 | ||
524 | ret = vb2_ioctl_streamoff(file, priv, type); | |
525 | if (ret < 0) | |
526 | return ret; | |
527 | ||
528 | media_entity_pipeline_stop(&video->ve.vdev.entity); | |
529 | video->streaming = 0; | |
530 | return 0; | |
531 | } | |
532 | ||
533 | static int isp_video_reqbufs(struct file *file, void *priv, | |
534 | struct v4l2_requestbuffers *rb) | |
535 | { | |
536 | struct fimc_isp *isp = video_drvdata(file); | |
537 | int ret; | |
538 | ||
539 | ret = vb2_ioctl_reqbufs(file, priv, rb); | |
540 | if (ret < 0) | |
541 | return ret; | |
542 | ||
543 | if (rb->count && rb->count < FIMC_ISP_REQ_BUFS_MIN) { | |
544 | rb->count = 0; | |
545 | vb2_ioctl_reqbufs(file, priv, rb); | |
546 | ret = -ENOMEM; | |
547 | } | |
548 | ||
549 | isp->video_capture.reqbufs_count = rb->count; | |
550 | return ret; | |
551 | } | |
552 | ||
553 | static const struct v4l2_ioctl_ops isp_video_ioctl_ops = { | |
554 | .vidioc_querycap = isp_video_querycap, | |
555 | .vidioc_enum_fmt_vid_cap_mplane = isp_video_enum_fmt_mplane, | |
556 | .vidioc_try_fmt_vid_cap_mplane = isp_video_try_fmt_mplane, | |
557 | .vidioc_s_fmt_vid_cap_mplane = isp_video_s_fmt_mplane, | |
558 | .vidioc_g_fmt_vid_cap_mplane = isp_video_g_fmt_mplane, | |
559 | .vidioc_reqbufs = isp_video_reqbufs, | |
560 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
561 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, | |
562 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
563 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
564 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
565 | .vidioc_streamon = isp_video_streamon, | |
566 | .vidioc_streamoff = isp_video_streamoff, | |
567 | }; | |
568 | ||
569 | int fimc_isp_video_device_register(struct fimc_isp *isp, | |
570 | struct v4l2_device *v4l2_dev, | |
571 | enum v4l2_buf_type type) | |
572 | { | |
573 | struct vb2_queue *q = &isp->video_capture.vb_queue; | |
574 | struct fimc_is_video *iv; | |
575 | struct video_device *vdev; | |
576 | int ret; | |
577 | ||
578 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
579 | iv = &isp->video_capture; | |
580 | else | |
581 | return -ENOSYS; | |
582 | ||
583 | mutex_init(&isp->video_lock); | |
584 | INIT_LIST_HEAD(&iv->pending_buf_q); | |
585 | INIT_LIST_HEAD(&iv->active_buf_q); | |
586 | iv->format = fimc_isp_find_format(NULL, NULL, 0); | |
587 | iv->pixfmt.width = IS_DEFAULT_WIDTH; | |
588 | iv->pixfmt.height = IS_DEFAULT_HEIGHT; | |
589 | iv->pixfmt.pixelformat = iv->format->fourcc; | |
590 | iv->pixfmt.colorspace = V4L2_COLORSPACE_SRGB; | |
591 | iv->reqbufs_count = 0; | |
592 | ||
593 | memset(q, 0, sizeof(*q)); | |
594 | q->type = type; | |
595 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
596 | q->ops = &isp_video_capture_qops; | |
597 | q->mem_ops = &vb2_dma_contig_memops; | |
598 | q->buf_struct_size = sizeof(struct isp_video_buf); | |
599 | q->drv_priv = isp; | |
600 | q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; | |
601 | q->lock = &isp->video_lock; | |
602 | ||
603 | ret = vb2_queue_init(q); | |
604 | if (ret < 0) | |
605 | return ret; | |
606 | ||
607 | vdev = &iv->ve.vdev; | |
608 | memset(vdev, 0, sizeof(*vdev)); | |
609 | snprintf(vdev->name, sizeof(vdev->name), "fimc-is-isp.%s", | |
610 | type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ? | |
611 | "capture" : "output"); | |
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 | ||
620 | iv->pad.flags = MEDIA_PAD_FL_SINK; | |
621 | ret = media_entity_init(&vdev->entity, 1, &iv->pad, 0); | |
622 | if (ret < 0) | |
623 | return ret; | |
624 | ||
625 | video_set_drvdata(vdev, isp); | |
626 | ||
627 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
628 | if (ret < 0) { | |
629 | media_entity_cleanup(&vdev->entity); | |
630 | return ret; | |
631 | } | |
632 | ||
633 | v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", | |
634 | vdev->name, video_device_node_name(vdev)); | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
639 | void fimc_isp_video_device_unregister(struct fimc_isp *isp, | |
640 | enum v4l2_buf_type type) | |
641 | { | |
642 | struct exynos_video_entity *ve; | |
643 | ||
644 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
645 | ve = &isp->video_capture.ve; | |
646 | else | |
647 | return; | |
648 | ||
649 | mutex_lock(&isp->video_lock); | |
650 | ||
651 | if (video_is_registered(&ve->vdev)) { | |
652 | video_unregister_device(&ve->vdev); | |
653 | media_entity_cleanup(&ve->vdev.entity); | |
654 | ve->pipe = NULL; | |
655 | } | |
656 | ||
657 | mutex_unlock(&isp->video_lock); | |
658 | } |