diff options
Diffstat (limited to 'drivers/media/platform/exynos4-is/fimc-isp-video.c')
-rw-r--r-- | drivers/media/platform/exynos4-is/fimc-isp-video.c | 660 |
1 files changed, 660 insertions, 0 deletions
diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c new file mode 100644 index 000000000000..e92b4e115adb --- /dev/null +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c | |||
@@ -0,0 +1,660 @@ | |||
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> | ||
33 | #include <media/s5p_fimc.h> | ||
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 | |||
128 | static int isp_video_capture_stop_streaming(struct vb2_queue *q) | ||
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) | ||
137 | return ret; | ||
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; | ||
158 | return 0; | ||
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 | { | ||
198 | struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); | ||
199 | struct fimc_is_video *video = &isp->video_capture; | ||
200 | struct fimc_is *is = fimc_isp_to_is(isp); | ||
201 | struct isp_video_buf *ivb = to_isp_video_buf(vb); | ||
202 | unsigned long flags; | ||
203 | unsigned int i; | ||
204 | |||
205 | if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { | ||
206 | spin_lock_irqsave(&is->slock, flags); | ||
207 | video->buf_mask |= BIT(ivb->index); | ||
208 | spin_unlock_irqrestore(&is->slock, flags); | ||
209 | } else { | ||
210 | unsigned int num_planes = video->format->memplanes; | ||
211 | |||
212 | ivb->index = video->buf_count; | ||
213 | video->buffers[ivb->index] = ivb; | ||
214 | |||
215 | for (i = 0; i < num_planes; i++) { | ||
216 | int buf_index = ivb->index * num_planes + i; | ||
217 | |||
218 | ivb->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i); | ||
219 | is->is_p_region->shared[32 + buf_index] = | ||
220 | ivb->dma_addr[i]; | ||
221 | |||
222 | isp_dbg(2, &video->ve.vdev, | ||
223 | "dma_buf %d (%d/%d/%d) addr: %#x\n", | ||
224 | buf_index, ivb->index, i, vb->v4l2_buf.index, | ||
225 | ivb->dma_addr[i]); | ||
226 | } | ||
227 | |||
228 | if (++video->buf_count < video->reqbufs_count) | ||
229 | return; | ||
230 | |||
231 | video->buf_mask = (1UL << video->buf_count) - 1; | ||
232 | set_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); | ||
233 | } | ||
234 | |||
235 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) | ||
236 | isp_video_capture_start_streaming(vb->vb2_queue, 0); | ||
237 | } | ||
238 | |||
239 | /* | ||
240 | * FIMC-IS ISP input and output DMA interface interrupt handler. | ||
241 | * Locking: called with is->slock spinlock held. | ||
242 | */ | ||
243 | void fimc_isp_video_irq_handler(struct fimc_is *is) | ||
244 | { | ||
245 | struct fimc_is_video *video = &is->isp.video_capture; | ||
246 | struct vb2_buffer *vb; | ||
247 | int buf_index; | ||
248 | |||
249 | /* TODO: Ensure the DMA is really stopped in stop_streaming callback */ | ||
250 | if (!test_bit(ST_ISP_VID_CAP_STREAMING, &is->isp.state)) | ||
251 | return; | ||
252 | |||
253 | buf_index = (is->i2h_cmd.args[1] - 1) % video->buf_count; | ||
254 | vb = &video->buffers[buf_index]->vb; | ||
255 | |||
256 | v4l2_get_timestamp(&vb->v4l2_buf.timestamp); | ||
257 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | ||
258 | |||
259 | video->buf_mask &= ~BIT(buf_index); | ||
260 | fimc_is_hw_set_isp_buf_mask(is, video->buf_mask); | ||
261 | } | ||
262 | |||
263 | static const struct vb2_ops isp_video_capture_qops = { | ||
264 | .queue_setup = isp_video_capture_queue_setup, | ||
265 | .buf_prepare = isp_video_capture_buffer_prepare, | ||
266 | .buf_queue = isp_video_capture_buffer_queue, | ||
267 | .wait_prepare = vb2_ops_wait_prepare, | ||
268 | .wait_finish = vb2_ops_wait_finish, | ||
269 | .start_streaming = isp_video_capture_start_streaming, | ||
270 | .stop_streaming = isp_video_capture_stop_streaming, | ||
271 | }; | ||
272 | |||
273 | static int isp_video_open(struct file *file) | ||
274 | { | ||
275 | struct fimc_isp *isp = video_drvdata(file); | ||
276 | struct exynos_video_entity *ve = &isp->video_capture.ve; | ||
277 | struct media_entity *me = &ve->vdev.entity; | ||
278 | int ret; | ||
279 | |||
280 | if (mutex_lock_interruptible(&isp->video_lock)) | ||
281 | return -ERESTARTSYS; | ||
282 | |||
283 | ret = v4l2_fh_open(file); | ||
284 | if (ret < 0) | ||
285 | goto unlock; | ||
286 | |||
287 | ret = pm_runtime_get_sync(&isp->pdev->dev); | ||
288 | if (ret < 0) | ||
289 | goto rel_fh; | ||
290 | |||
291 | if (v4l2_fh_is_singular_file(file)) { | ||
292 | mutex_lock(&me->parent->graph_mutex); | ||
293 | |||
294 | ret = fimc_pipeline_call(ve, open, me, true); | ||
295 | |||
296 | /* Mark the video pipeline as in use. */ | ||
297 | if (ret == 0) | ||
298 | me->use_count++; | ||
299 | |||
300 | mutex_unlock(&me->parent->graph_mutex); | ||
301 | } | ||
302 | if (!ret) | ||
303 | goto unlock; | ||
304 | rel_fh: | ||
305 | v4l2_fh_release(file); | ||
306 | unlock: | ||
307 | mutex_unlock(&isp->video_lock); | ||
308 | return ret; | ||
309 | } | ||
310 | |||
311 | static int isp_video_release(struct file *file) | ||
312 | { | ||
313 | struct fimc_isp *isp = video_drvdata(file); | ||
314 | struct fimc_is_video *ivc = &isp->video_capture; | ||
315 | struct media_entity *entity = &ivc->ve.vdev.entity; | ||
316 | struct media_device *mdev = entity->parent; | ||
317 | int ret = 0; | ||
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 | |||
339 | return ret; | ||
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 | } | ||