4 * TI OMAP3 ISP - Generic video node
6 * Copyright (C) 2009-2010 Nokia Corporation
8 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
9 * Sakari Ailus <sakari.ailus@iki.fi>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
26 #include <asm/cacheflush.h>
27 #include <linux/clk.h>
29 #include <linux/module.h>
30 #include <linux/omap-iommu.h>
31 #include <linux/pagemap.h>
32 #include <linux/scatterlist.h>
33 #include <linux/sched.h>
34 #include <linux/slab.h>
35 #include <linux/vmalloc.h>
36 #include <media/v4l2-dev.h>
37 #include <media/v4l2-ioctl.h>
38 #include <plat/omap-pm.h>
44 /* -----------------------------------------------------------------------------
49 * NOTE: When adding new media bus codes, always remember to add
50 * corresponding in-memory formats to the table below!!!
52 static struct isp_format_info formats
[] = {
53 { V4L2_MBUS_FMT_Y8_1X8
, V4L2_MBUS_FMT_Y8_1X8
,
54 V4L2_MBUS_FMT_Y8_1X8
, V4L2_MBUS_FMT_Y8_1X8
,
55 V4L2_PIX_FMT_GREY
, 8, 1, },
56 { V4L2_MBUS_FMT_Y10_1X10
, V4L2_MBUS_FMT_Y10_1X10
,
57 V4L2_MBUS_FMT_Y10_1X10
, V4L2_MBUS_FMT_Y8_1X8
,
58 V4L2_PIX_FMT_Y10
, 10, 2, },
59 { V4L2_MBUS_FMT_Y12_1X12
, V4L2_MBUS_FMT_Y10_1X10
,
60 V4L2_MBUS_FMT_Y12_1X12
, V4L2_MBUS_FMT_Y8_1X8
,
61 V4L2_PIX_FMT_Y12
, 12, 2, },
62 { V4L2_MBUS_FMT_SBGGR8_1X8
, V4L2_MBUS_FMT_SBGGR8_1X8
,
63 V4L2_MBUS_FMT_SBGGR8_1X8
, V4L2_MBUS_FMT_SBGGR8_1X8
,
64 V4L2_PIX_FMT_SBGGR8
, 8, 1, },
65 { V4L2_MBUS_FMT_SGBRG8_1X8
, V4L2_MBUS_FMT_SGBRG8_1X8
,
66 V4L2_MBUS_FMT_SGBRG8_1X8
, V4L2_MBUS_FMT_SGBRG8_1X8
,
67 V4L2_PIX_FMT_SGBRG8
, 8, 1, },
68 { V4L2_MBUS_FMT_SGRBG8_1X8
, V4L2_MBUS_FMT_SGRBG8_1X8
,
69 V4L2_MBUS_FMT_SGRBG8_1X8
, V4L2_MBUS_FMT_SGRBG8_1X8
,
70 V4L2_PIX_FMT_SGRBG8
, 8, 1, },
71 { V4L2_MBUS_FMT_SRGGB8_1X8
, V4L2_MBUS_FMT_SRGGB8_1X8
,
72 V4L2_MBUS_FMT_SRGGB8_1X8
, V4L2_MBUS_FMT_SRGGB8_1X8
,
73 V4L2_PIX_FMT_SRGGB8
, 8, 1, },
74 { V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8
, V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8
,
75 V4L2_MBUS_FMT_SBGGR10_1X10
, 0,
76 V4L2_PIX_FMT_SBGGR10DPCM8
, 8, 1, },
77 { V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8
, V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8
,
78 V4L2_MBUS_FMT_SGBRG10_1X10
, 0,
79 V4L2_PIX_FMT_SGBRG10DPCM8
, 8, 1, },
80 { V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8
, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8
,
81 V4L2_MBUS_FMT_SGRBG10_1X10
, 0,
82 V4L2_PIX_FMT_SGRBG10DPCM8
, 8, 1, },
83 { V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8
, V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8
,
84 V4L2_MBUS_FMT_SRGGB10_1X10
, 0,
85 V4L2_PIX_FMT_SRGGB10DPCM8
, 8, 1, },
86 { V4L2_MBUS_FMT_SBGGR10_1X10
, V4L2_MBUS_FMT_SBGGR10_1X10
,
87 V4L2_MBUS_FMT_SBGGR10_1X10
, V4L2_MBUS_FMT_SBGGR8_1X8
,
88 V4L2_PIX_FMT_SBGGR10
, 10, 2, },
89 { V4L2_MBUS_FMT_SGBRG10_1X10
, V4L2_MBUS_FMT_SGBRG10_1X10
,
90 V4L2_MBUS_FMT_SGBRG10_1X10
, V4L2_MBUS_FMT_SGBRG8_1X8
,
91 V4L2_PIX_FMT_SGBRG10
, 10, 2, },
92 { V4L2_MBUS_FMT_SGRBG10_1X10
, V4L2_MBUS_FMT_SGRBG10_1X10
,
93 V4L2_MBUS_FMT_SGRBG10_1X10
, V4L2_MBUS_FMT_SGRBG8_1X8
,
94 V4L2_PIX_FMT_SGRBG10
, 10, 2, },
95 { V4L2_MBUS_FMT_SRGGB10_1X10
, V4L2_MBUS_FMT_SRGGB10_1X10
,
96 V4L2_MBUS_FMT_SRGGB10_1X10
, V4L2_MBUS_FMT_SRGGB8_1X8
,
97 V4L2_PIX_FMT_SRGGB10
, 10, 2, },
98 { V4L2_MBUS_FMT_SBGGR12_1X12
, V4L2_MBUS_FMT_SBGGR10_1X10
,
99 V4L2_MBUS_FMT_SBGGR12_1X12
, V4L2_MBUS_FMT_SBGGR8_1X8
,
100 V4L2_PIX_FMT_SBGGR12
, 12, 2, },
101 { V4L2_MBUS_FMT_SGBRG12_1X12
, V4L2_MBUS_FMT_SGBRG10_1X10
,
102 V4L2_MBUS_FMT_SGBRG12_1X12
, V4L2_MBUS_FMT_SGBRG8_1X8
,
103 V4L2_PIX_FMT_SGBRG12
, 12, 2, },
104 { V4L2_MBUS_FMT_SGRBG12_1X12
, V4L2_MBUS_FMT_SGRBG10_1X10
,
105 V4L2_MBUS_FMT_SGRBG12_1X12
, V4L2_MBUS_FMT_SGRBG8_1X8
,
106 V4L2_PIX_FMT_SGRBG12
, 12, 2, },
107 { V4L2_MBUS_FMT_SRGGB12_1X12
, V4L2_MBUS_FMT_SRGGB10_1X10
,
108 V4L2_MBUS_FMT_SRGGB12_1X12
, V4L2_MBUS_FMT_SRGGB8_1X8
,
109 V4L2_PIX_FMT_SRGGB12
, 12, 2, },
110 { V4L2_MBUS_FMT_UYVY8_1X16
, V4L2_MBUS_FMT_UYVY8_1X16
,
111 V4L2_MBUS_FMT_UYVY8_1X16
, 0,
112 V4L2_PIX_FMT_UYVY
, 16, 2, },
113 { V4L2_MBUS_FMT_YUYV8_1X16
, V4L2_MBUS_FMT_YUYV8_1X16
,
114 V4L2_MBUS_FMT_YUYV8_1X16
, 0,
115 V4L2_PIX_FMT_YUYV
, 16, 2, },
116 { V4L2_MBUS_FMT_UYVY8_2X8
, V4L2_MBUS_FMT_UYVY8_2X8
,
117 V4L2_MBUS_FMT_UYVY8_2X8
, 0,
118 V4L2_PIX_FMT_UYVY
, 8, 2, },
119 { V4L2_MBUS_FMT_YUYV8_2X8
, V4L2_MBUS_FMT_YUYV8_2X8
,
120 V4L2_MBUS_FMT_YUYV8_2X8
, 0,
121 V4L2_PIX_FMT_YUYV
, 8, 2, },
122 /* Empty entry to catch the unsupported pixel code (0) used by the CCDC
123 * module and avoid NULL pointer dereferences.
128 const struct isp_format_info
*
129 omap3isp_video_format_info(enum v4l2_mbus_pixelcode code
)
133 for (i
= 0; i
< ARRAY_SIZE(formats
); ++i
) {
134 if (formats
[i
].code
== code
)
142 * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format
143 * @video: ISP video instance
144 * @mbus: v4l2_mbus_framefmt format (input)
145 * @pix: v4l2_pix_format format (output)
147 * Fill the output pix structure with information from the input mbus format.
148 * The bytesperline and sizeimage fields are computed from the requested bytes
149 * per line value in the pix format and information from the video instance.
151 * Return the number of padding bytes at end of line.
153 static unsigned int isp_video_mbus_to_pix(const struct isp_video
*video
,
154 const struct v4l2_mbus_framefmt
*mbus
,
155 struct v4l2_pix_format
*pix
)
157 unsigned int bpl
= pix
->bytesperline
;
158 unsigned int min_bpl
;
161 memset(pix
, 0, sizeof(*pix
));
162 pix
->width
= mbus
->width
;
163 pix
->height
= mbus
->height
;
165 for (i
= 0; i
< ARRAY_SIZE(formats
); ++i
) {
166 if (formats
[i
].code
== mbus
->code
)
170 if (WARN_ON(i
== ARRAY_SIZE(formats
)))
173 min_bpl
= pix
->width
* formats
[i
].bpp
;
175 /* Clamp the requested bytes per line value. If the maximum bytes per
176 * line value is zero, the module doesn't support user configurable line
177 * sizes. Override the requested value with the minimum in that case.
180 bpl
= clamp(bpl
, min_bpl
, video
->bpl_max
);
184 if (!video
->bpl_zero_padding
|| bpl
!= min_bpl
)
185 bpl
= ALIGN(bpl
, video
->bpl_alignment
);
187 pix
->pixelformat
= formats
[i
].pixelformat
;
188 pix
->bytesperline
= bpl
;
189 pix
->sizeimage
= pix
->bytesperline
* pix
->height
;
190 pix
->colorspace
= mbus
->colorspace
;
191 pix
->field
= mbus
->field
;
193 return bpl
- min_bpl
;
196 static void isp_video_pix_to_mbus(const struct v4l2_pix_format
*pix
,
197 struct v4l2_mbus_framefmt
*mbus
)
201 memset(mbus
, 0, sizeof(*mbus
));
202 mbus
->width
= pix
->width
;
203 mbus
->height
= pix
->height
;
205 /* Skip the last format in the loop so that it will be selected if no
208 for (i
= 0; i
< ARRAY_SIZE(formats
) - 1; ++i
) {
209 if (formats
[i
].pixelformat
== pix
->pixelformat
)
213 mbus
->code
= formats
[i
].code
;
214 mbus
->colorspace
= pix
->colorspace
;
215 mbus
->field
= pix
->field
;
218 static struct v4l2_subdev
*
219 isp_video_remote_subdev(struct isp_video
*video
, u32
*pad
)
221 struct media_pad
*remote
;
223 remote
= media_entity_remote_source(&video
->pad
);
225 if (remote
== NULL
||
226 media_entity_type(remote
->entity
) != MEDIA_ENT_T_V4L2_SUBDEV
)
230 *pad
= remote
->index
;
232 return media_entity_to_v4l2_subdev(remote
->entity
);
235 /* Return a pointer to the ISP video instance at the far end of the pipeline. */
236 static int isp_video_get_graph_data(struct isp_video
*video
,
237 struct isp_pipeline
*pipe
)
239 struct media_entity_graph graph
;
240 struct media_entity
*entity
= &video
->video
.entity
;
241 struct media_device
*mdev
= entity
->parent
;
242 struct isp_video
*far_end
= NULL
;
244 mutex_lock(&mdev
->graph_mutex
);
245 media_entity_graph_walk_start(&graph
, entity
);
247 while ((entity
= media_entity_graph_walk_next(&graph
))) {
248 struct isp_video
*__video
;
250 pipe
->entities
|= 1 << entity
->id
;
255 if (entity
== &video
->video
.entity
)
258 if (media_entity_type(entity
) != MEDIA_ENT_T_DEVNODE
)
261 __video
= to_isp_video(media_entity_to_video_device(entity
));
262 if (__video
->type
!= video
->type
)
266 mutex_unlock(&mdev
->graph_mutex
);
268 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
269 pipe
->input
= far_end
;
270 pipe
->output
= video
;
276 pipe
->output
= far_end
;
283 * Validate a pipeline by checking both ends of all links for format
286 * Compute the minimum time per frame value as the maximum of time per frame
287 * limits reported by every block in the pipeline.
289 * Return 0 if all formats match, or -EPIPE if at least one link is found with
290 * different formats on its two ends or if the pipeline doesn't start with a
291 * video source (either a subdev with no input pad, or a non-subdev entity).
293 static int isp_video_validate_pipeline(struct isp_pipeline
*pipe
)
295 struct isp_device
*isp
= pipe
->output
->isp
;
296 struct media_pad
*pad
;
297 struct v4l2_subdev
*subdev
;
299 subdev
= isp_video_remote_subdev(pipe
->output
, NULL
);
304 /* Retrieve the sink format */
305 pad
= &subdev
->entity
.pads
[0];
306 if (!(pad
->flags
& MEDIA_PAD_FL_SINK
))
309 /* Update the maximum frame rate */
310 if (subdev
== &isp
->isp_res
.subdev
)
311 omap3isp_resizer_max_rate(&isp
->isp_res
,
314 /* Retrieve the source format. Return an error if no source
315 * entity can be found, and stop checking the pipeline if the
316 * source entity isn't a subdev.
318 pad
= media_entity_remote_source(pad
);
322 if (media_entity_type(pad
->entity
) != MEDIA_ENT_T_V4L2_SUBDEV
)
325 subdev
= media_entity_to_v4l2_subdev(pad
->entity
);
332 __isp_video_get_format(struct isp_video
*video
, struct v4l2_format
*format
)
334 struct v4l2_subdev_format fmt
;
335 struct v4l2_subdev
*subdev
;
339 subdev
= isp_video_remote_subdev(video
, &pad
);
343 mutex_lock(&video
->mutex
);
346 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
347 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &fmt
);
348 if (ret
== -ENOIOCTLCMD
)
351 mutex_unlock(&video
->mutex
);
356 format
->type
= video
->type
;
357 return isp_video_mbus_to_pix(video
, &fmt
.format
, &format
->fmt
.pix
);
361 isp_video_check_format(struct isp_video
*video
, struct isp_video_fh
*vfh
)
363 struct v4l2_format format
;
366 memcpy(&format
, &vfh
->format
, sizeof(format
));
367 ret
= __isp_video_get_format(video
, &format
);
371 if (vfh
->format
.fmt
.pix
.pixelformat
!= format
.fmt
.pix
.pixelformat
||
372 vfh
->format
.fmt
.pix
.height
!= format
.fmt
.pix
.height
||
373 vfh
->format
.fmt
.pix
.width
!= format
.fmt
.pix
.width
||
374 vfh
->format
.fmt
.pix
.bytesperline
!= format
.fmt
.pix
.bytesperline
||
375 vfh
->format
.fmt
.pix
.sizeimage
!= format
.fmt
.pix
.sizeimage
)
381 /* -----------------------------------------------------------------------------
385 #define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8)
388 * ispmmu_vmap - Wrapper for Virtual memory mapping of a scatter gather list
389 * @dev: Device pointer specific to the OMAP3 ISP.
390 * @sglist: Pointer to source Scatter gather list to allocate.
391 * @sglen: Number of elements of the scatter-gatter list.
393 * Returns a resulting mapped device address by the ISP MMU, or -ENOMEM if
394 * we ran out of memory.
397 ispmmu_vmap(struct isp_device
*isp
, const struct scatterlist
*sglist
, int sglen
)
399 struct sg_table
*sgt
;
402 sgt
= kmalloc(sizeof(*sgt
), GFP_KERNEL
);
406 sgt
->sgl
= (struct scatterlist
*)sglist
;
408 sgt
->orig_nents
= sglen
;
410 da
= omap_iommu_vmap(isp
->domain
, isp
->dev
, 0, sgt
, IOMMU_FLAG
);
411 if (IS_ERR_VALUE(da
))
418 * ispmmu_vunmap - Unmap a device address from the ISP MMU
419 * @dev: Device pointer specific to the OMAP3 ISP.
420 * @da: Device address generated from a ispmmu_vmap call.
422 static void ispmmu_vunmap(struct isp_device
*isp
, dma_addr_t da
)
424 struct sg_table
*sgt
;
426 sgt
= omap_iommu_vunmap(isp
->domain
, isp
->dev
, (u32
)da
);
430 /* -----------------------------------------------------------------------------
431 * Video queue operations
434 static void isp_video_queue_prepare(struct isp_video_queue
*queue
,
435 unsigned int *nbuffers
, unsigned int *size
)
437 struct isp_video_fh
*vfh
=
438 container_of(queue
, struct isp_video_fh
, queue
);
439 struct isp_video
*video
= vfh
->video
;
441 *size
= vfh
->format
.fmt
.pix
.sizeimage
;
445 *nbuffers
= min(*nbuffers
, video
->capture_mem
/ PAGE_ALIGN(*size
));
448 static void isp_video_buffer_cleanup(struct isp_video_buffer
*buf
)
450 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
451 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
452 struct isp_video
*video
= vfh
->video
;
454 if (buffer
->isp_addr
) {
455 ispmmu_vunmap(video
->isp
, buffer
->isp_addr
);
456 buffer
->isp_addr
= 0;
460 static int isp_video_buffer_prepare(struct isp_video_buffer
*buf
)
462 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
463 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
464 struct isp_video
*video
= vfh
->video
;
467 addr
= ispmmu_vmap(video
->isp
, buf
->sglist
, buf
->sglen
);
468 if (IS_ERR_VALUE(addr
))
471 if (!IS_ALIGNED(addr
, 32)) {
472 dev_dbg(video
->isp
->dev
, "Buffer address must be "
473 "aligned to 32 bytes boundary.\n");
474 ispmmu_vunmap(video
->isp
, buffer
->isp_addr
);
478 buf
->vbuf
.bytesused
= vfh
->format
.fmt
.pix
.sizeimage
;
479 buffer
->isp_addr
= addr
;
484 * isp_video_buffer_queue - Add buffer to streaming queue
487 * In memory-to-memory mode, start streaming on the pipeline if buffers are
488 * queued on both the input and the output, if the pipeline isn't already busy.
489 * If the pipeline is busy, it will be restarted in the output module interrupt
492 static void isp_video_buffer_queue(struct isp_video_buffer
*buf
)
494 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
495 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
496 struct isp_video
*video
= vfh
->video
;
497 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
498 enum isp_pipeline_state state
;
503 empty
= list_empty(&video
->dmaqueue
);
504 list_add_tail(&buffer
->buffer
.irqlist
, &video
->dmaqueue
);
507 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
508 state
= ISP_PIPELINE_QUEUE_OUTPUT
;
510 state
= ISP_PIPELINE_QUEUE_INPUT
;
512 spin_lock_irqsave(&pipe
->lock
, flags
);
513 pipe
->state
|= state
;
514 video
->ops
->queue(video
, buffer
);
515 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_QUEUED
;
517 start
= isp_pipeline_ready(pipe
);
519 pipe
->state
|= ISP_PIPELINE_STREAM
;
520 spin_unlock_irqrestore(&pipe
->lock
, flags
);
523 omap3isp_pipeline_set_stream(pipe
,
524 ISP_PIPELINE_STREAM_SINGLESHOT
);
528 static const struct isp_video_queue_operations isp_video_queue_ops
= {
529 .queue_prepare
= &isp_video_queue_prepare
,
530 .buffer_prepare
= &isp_video_buffer_prepare
,
531 .buffer_queue
= &isp_video_buffer_queue
,
532 .buffer_cleanup
= &isp_video_buffer_cleanup
,
536 * omap3isp_video_buffer_next - Complete the current buffer and return the next
537 * @video: ISP video object
539 * Remove the current video buffer from the DMA queue and fill its timestamp,
540 * field count and state fields before waking up its completion handler.
542 * For capture video nodes the buffer state is set to ISP_BUF_STATE_DONE if no
543 * error has been flagged in the pipeline, or to ISP_BUF_STATE_ERROR otherwise.
544 * For video output nodes the buffer state is always set to ISP_BUF_STATE_DONE.
546 * The DMA queue is expected to contain at least one buffer.
548 * Return a pointer to the next buffer in the DMA queue, or NULL if the queue is
551 struct isp_buffer
*omap3isp_video_buffer_next(struct isp_video
*video
)
553 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
554 struct isp_video_queue
*queue
= video
->queue
;
555 enum isp_pipeline_state state
;
556 struct isp_video_buffer
*buf
;
560 spin_lock_irqsave(&queue
->irqlock
, flags
);
561 if (WARN_ON(list_empty(&video
->dmaqueue
))) {
562 spin_unlock_irqrestore(&queue
->irqlock
, flags
);
566 buf
= list_first_entry(&video
->dmaqueue
, struct isp_video_buffer
,
568 list_del(&buf
->irqlist
);
569 spin_unlock_irqrestore(&queue
->irqlock
, flags
);
572 buf
->vbuf
.timestamp
.tv_sec
= ts
.tv_sec
;
573 buf
->vbuf
.timestamp
.tv_usec
= ts
.tv_nsec
/ NSEC_PER_USEC
;
575 /* Do frame number propagation only if this is the output video node.
576 * Frame number either comes from the CSI receivers or it gets
577 * incremented here if H3A is not active.
578 * Note: There is no guarantee that the output buffer will finish
579 * first, so the input number might lag behind by 1 in some cases.
581 if (video
== pipe
->output
&& !pipe
->do_propagation
)
582 buf
->vbuf
.sequence
= atomic_inc_return(&pipe
->frame_number
);
584 buf
->vbuf
.sequence
= atomic_read(&pipe
->frame_number
);
586 /* Report pipeline errors to userspace on the capture device side. */
587 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& pipe
->error
) {
588 buf
->state
= ISP_BUF_STATE_ERROR
;
591 buf
->state
= ISP_BUF_STATE_DONE
;
596 if (list_empty(&video
->dmaqueue
)) {
597 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
598 state
= ISP_PIPELINE_QUEUE_OUTPUT
599 | ISP_PIPELINE_STREAM
;
601 state
= ISP_PIPELINE_QUEUE_INPUT
602 | ISP_PIPELINE_STREAM
;
604 spin_lock_irqsave(&pipe
->lock
, flags
);
605 pipe
->state
&= ~state
;
606 if (video
->pipe
.stream_state
== ISP_PIPELINE_STREAM_CONTINUOUS
)
607 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
608 spin_unlock_irqrestore(&pipe
->lock
, flags
);
612 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& pipe
->input
!= NULL
) {
613 spin_lock_irqsave(&pipe
->lock
, flags
);
614 pipe
->state
&= ~ISP_PIPELINE_STREAM
;
615 spin_unlock_irqrestore(&pipe
->lock
, flags
);
618 buf
= list_first_entry(&video
->dmaqueue
, struct isp_video_buffer
,
620 buf
->state
= ISP_BUF_STATE_ACTIVE
;
621 return to_isp_buffer(buf
);
625 * omap3isp_video_resume - Perform resume operation on the buffers
626 * @video: ISP video object
627 * @continuous: Pipeline is in single shot mode if 0 or continuous mode otherwise
629 * This function is intended to be used on suspend/resume scenario. It
630 * requests video queue layer to discard buffers marked as DONE if it's in
631 * continuous mode and requests ISP modules to queue again the ACTIVE buffer
634 void omap3isp_video_resume(struct isp_video
*video
, int continuous
)
636 struct isp_buffer
*buf
= NULL
;
638 if (continuous
&& video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
639 omap3isp_video_queue_discard_done(video
->queue
);
641 if (!list_empty(&video
->dmaqueue
)) {
642 buf
= list_first_entry(&video
->dmaqueue
,
643 struct isp_buffer
, buffer
.irqlist
);
644 video
->ops
->queue(video
, buf
);
645 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_QUEUED
;
648 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
652 /* -----------------------------------------------------------------------------
657 isp_video_querycap(struct file
*file
, void *fh
, struct v4l2_capability
*cap
)
659 struct isp_video
*video
= video_drvdata(file
);
661 strlcpy(cap
->driver
, ISP_VIDEO_DRIVER_NAME
, sizeof(cap
->driver
));
662 strlcpy(cap
->card
, video
->video
.name
, sizeof(cap
->card
));
663 strlcpy(cap
->bus_info
, "media", sizeof(cap
->bus_info
));
665 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
666 cap
->capabilities
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
668 cap
->capabilities
= V4L2_CAP_VIDEO_OUTPUT
| V4L2_CAP_STREAMING
;
674 isp_video_get_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
676 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
677 struct isp_video
*video
= video_drvdata(file
);
679 if (format
->type
!= video
->type
)
682 mutex_lock(&video
->mutex
);
683 *format
= vfh
->format
;
684 mutex_unlock(&video
->mutex
);
690 isp_video_set_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
692 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
693 struct isp_video
*video
= video_drvdata(file
);
694 struct v4l2_mbus_framefmt fmt
;
696 if (format
->type
!= video
->type
)
699 mutex_lock(&video
->mutex
);
701 /* Fill the bytesperline and sizeimage fields by converting to media bus
702 * format and back to pixel format.
704 isp_video_pix_to_mbus(&format
->fmt
.pix
, &fmt
);
705 isp_video_mbus_to_pix(video
, &fmt
, &format
->fmt
.pix
);
707 vfh
->format
= *format
;
709 mutex_unlock(&video
->mutex
);
714 isp_video_try_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
716 struct isp_video
*video
= video_drvdata(file
);
717 struct v4l2_subdev_format fmt
;
718 struct v4l2_subdev
*subdev
;
722 if (format
->type
!= video
->type
)
725 subdev
= isp_video_remote_subdev(video
, &pad
);
729 isp_video_pix_to_mbus(&format
->fmt
.pix
, &fmt
.format
);
732 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
733 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &fmt
);
735 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
737 isp_video_mbus_to_pix(video
, &fmt
.format
, &format
->fmt
.pix
);
742 isp_video_cropcap(struct file
*file
, void *fh
, struct v4l2_cropcap
*cropcap
)
744 struct isp_video
*video
= video_drvdata(file
);
745 struct v4l2_subdev
*subdev
;
748 subdev
= isp_video_remote_subdev(video
, NULL
);
752 mutex_lock(&video
->mutex
);
753 ret
= v4l2_subdev_call(subdev
, video
, cropcap
, cropcap
);
754 mutex_unlock(&video
->mutex
);
756 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
760 isp_video_get_crop(struct file
*file
, void *fh
, struct v4l2_crop
*crop
)
762 struct isp_video
*video
= video_drvdata(file
);
763 struct v4l2_subdev_format format
;
764 struct v4l2_subdev
*subdev
;
768 subdev
= isp_video_remote_subdev(video
, &pad
);
772 /* Try the get crop operation first and fallback to get format if not
775 ret
= v4l2_subdev_call(subdev
, video
, g_crop
, crop
);
776 if (ret
!= -ENOIOCTLCMD
)
780 format
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
781 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &format
);
783 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
787 crop
->c
.width
= format
.format
.width
;
788 crop
->c
.height
= format
.format
.height
;
794 isp_video_set_crop(struct file
*file
, void *fh
, struct v4l2_crop
*crop
)
796 struct isp_video
*video
= video_drvdata(file
);
797 struct v4l2_subdev
*subdev
;
800 subdev
= isp_video_remote_subdev(video
, NULL
);
804 mutex_lock(&video
->mutex
);
805 ret
= v4l2_subdev_call(subdev
, video
, s_crop
, crop
);
806 mutex_unlock(&video
->mutex
);
808 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
812 isp_video_get_param(struct file
*file
, void *fh
, struct v4l2_streamparm
*a
)
814 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
815 struct isp_video
*video
= video_drvdata(file
);
817 if (video
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
||
818 video
->type
!= a
->type
)
821 memset(a
, 0, sizeof(*a
));
822 a
->type
= V4L2_BUF_TYPE_VIDEO_OUTPUT
;
823 a
->parm
.output
.capability
= V4L2_CAP_TIMEPERFRAME
;
824 a
->parm
.output
.timeperframe
= vfh
->timeperframe
;
830 isp_video_set_param(struct file
*file
, void *fh
, struct v4l2_streamparm
*a
)
832 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
833 struct isp_video
*video
= video_drvdata(file
);
835 if (video
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
||
836 video
->type
!= a
->type
)
839 if (a
->parm
.output
.timeperframe
.denominator
== 0)
840 a
->parm
.output
.timeperframe
.denominator
= 1;
842 vfh
->timeperframe
= a
->parm
.output
.timeperframe
;
848 isp_video_reqbufs(struct file
*file
, void *fh
, struct v4l2_requestbuffers
*rb
)
850 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
852 return omap3isp_video_queue_reqbufs(&vfh
->queue
, rb
);
856 isp_video_querybuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
858 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
860 return omap3isp_video_queue_querybuf(&vfh
->queue
, b
);
864 isp_video_qbuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
866 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
868 return omap3isp_video_queue_qbuf(&vfh
->queue
, b
);
872 isp_video_dqbuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
874 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
876 return omap3isp_video_queue_dqbuf(&vfh
->queue
, b
,
877 file
->f_flags
& O_NONBLOCK
);
880 static int isp_video_check_external_subdevs(struct isp_video
*video
,
881 struct isp_pipeline
*pipe
)
883 struct isp_device
*isp
= video
->isp
;
884 struct media_entity
*ents
[] = {
885 &isp
->isp_csi2a
.subdev
.entity
,
886 &isp
->isp_csi2c
.subdev
.entity
,
887 &isp
->isp_ccp2
.subdev
.entity
,
888 &isp
->isp_ccdc
.subdev
.entity
890 struct media_pad
*source_pad
;
891 struct media_entity
*source
= NULL
;
892 struct media_entity
*sink
;
893 struct v4l2_subdev_format fmt
;
894 struct v4l2_ext_controls ctrls
;
895 struct v4l2_ext_control ctrl
;
899 for (i
= 0; i
< ARRAY_SIZE(ents
); i
++) {
900 /* Is the entity part of the pipeline? */
901 if (!(pipe
->entities
& (1 << ents
[i
]->id
)))
904 /* ISP entities have always sink pad == 0. Find source. */
905 source_pad
= media_entity_remote_source(&ents
[i
]->pads
[0]);
906 if (source_pad
== NULL
)
909 source
= source_pad
->entity
;
915 dev_warn(isp
->dev
, "can't find source, failing now\n");
919 if (media_entity_type(source
) != MEDIA_ENT_T_V4L2_SUBDEV
)
922 pipe
->external
= media_entity_to_v4l2_subdev(source
);
924 fmt
.pad
= source_pad
->index
;
925 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
926 ret
= v4l2_subdev_call(media_entity_to_v4l2_subdev(sink
),
927 pad
, get_fmt
, NULL
, &fmt
);
928 if (unlikely(ret
< 0)) {
929 dev_warn(isp
->dev
, "get_fmt returned null!\n");
933 pipe
->external_width
=
934 omap3isp_video_format_info(fmt
.format
.code
)->width
;
936 memset(&ctrls
, 0, sizeof(ctrls
));
937 memset(&ctrl
, 0, sizeof(ctrl
));
939 ctrl
.id
= V4L2_CID_PIXEL_RATE
;
942 ctrls
.controls
= &ctrl
;
944 ret
= v4l2_g_ext_ctrls(pipe
->external
->ctrl_handler
, &ctrls
);
946 dev_warn(isp
->dev
, "no pixel rate control in subdev %s\n",
947 pipe
->external
->name
);
951 pipe
->external_rate
= ctrl
.value64
;
953 if (pipe
->entities
& (1 << isp
->isp_ccdc
.subdev
.entity
.id
)) {
954 unsigned int rate
= UINT_MAX
;
956 * Check that maximum allowed CCDC pixel rate isn't
957 * exceeded by the pixel rate.
959 omap3isp_ccdc_max_rate(&isp
->isp_ccdc
, &rate
);
960 if (pipe
->external_rate
> rate
)
970 * Every ISP pipeline has a single input and a single output. The input can be
971 * either a sensor or a video node. The output is always a video node.
973 * As every pipeline has an output video node, the ISP video objects at the
974 * pipeline output stores the pipeline state. It tracks the streaming state of
975 * both the input and output, as well as the availability of buffers.
977 * In sensor-to-memory mode, frames are always available at the pipeline input.
978 * Starting the sensor usually requires I2C transfers and must be done in
979 * interruptible context. The pipeline is started and stopped synchronously
980 * to the stream on/off commands. All modules in the pipeline will get their
981 * subdev set stream handler called. The module at the end of the pipeline must
982 * delay starting the hardware until buffers are available at its output.
984 * In memory-to-memory mode, starting/stopping the stream requires
985 * synchronization between the input and output. ISP modules can't be stopped
986 * in the middle of a frame, and at least some of the modules seem to become
987 * busy as soon as they're started, even if they don't receive a frame start
988 * event. For that reason frames need to be processed in single-shot mode. The
989 * driver needs to wait until a frame is completely processed and written to
990 * memory before restarting the pipeline for the next frame. Pipelined
991 * processing might be possible but requires more testing.
993 * Stream start must be delayed until buffers are available at both the input
994 * and output. The pipeline must be started in the videobuf queue callback with
995 * the buffers queue spinlock held. The modules subdev set stream operation must
999 isp_video_streamon(struct file
*file
, void *fh
, enum v4l2_buf_type type
)
1001 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
1002 struct isp_video
*video
= video_drvdata(file
);
1003 enum isp_pipeline_state state
;
1004 struct isp_pipeline
*pipe
;
1005 unsigned long flags
;
1008 if (type
!= video
->type
)
1011 mutex_lock(&video
->stream_lock
);
1013 if (video
->streaming
) {
1014 mutex_unlock(&video
->stream_lock
);
1018 /* Start streaming on the pipeline. No link touching an entity in the
1019 * pipeline can be activated or deactivated once streaming is started.
1021 pipe
= video
->video
.entity
.pipe
1022 ? to_isp_pipeline(&video
->video
.entity
) : &video
->pipe
;
1026 if (video
->isp
->pdata
->set_constraints
)
1027 video
->isp
->pdata
->set_constraints(video
->isp
, true);
1028 pipe
->l3_ick
= clk_get_rate(video
->isp
->clock
[ISP_CLK_L3_ICK
]);
1029 pipe
->max_rate
= pipe
->l3_ick
;
1031 ret
= media_entity_pipeline_start(&video
->video
.entity
, &pipe
->pipe
);
1033 goto err_pipeline_start
;
1035 /* Verify that the currently configured format matches the output of
1036 * the connected subdev.
1038 ret
= isp_video_check_format(video
, vfh
);
1040 goto err_check_format
;
1042 video
->bpl_padding
= ret
;
1043 video
->bpl_value
= vfh
->format
.fmt
.pix
.bytesperline
;
1045 ret
= isp_video_get_graph_data(video
, pipe
);
1047 goto err_check_format
;
1049 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1050 state
= ISP_PIPELINE_STREAM_OUTPUT
| ISP_PIPELINE_IDLE_OUTPUT
;
1052 state
= ISP_PIPELINE_STREAM_INPUT
| ISP_PIPELINE_IDLE_INPUT
;
1054 ret
= isp_video_check_external_subdevs(video
, pipe
);
1056 goto err_check_format
;
1058 /* Validate the pipeline and update its state. */
1059 ret
= isp_video_validate_pipeline(pipe
);
1061 goto err_check_format
;
1063 pipe
->error
= false;
1065 spin_lock_irqsave(&pipe
->lock
, flags
);
1066 pipe
->state
&= ~ISP_PIPELINE_STREAM
;
1067 pipe
->state
|= state
;
1068 spin_unlock_irqrestore(&pipe
->lock
, flags
);
1070 /* Set the maximum time per frame as the value requested by userspace.
1071 * This is a soft limit that can be overridden if the hardware doesn't
1072 * support the request limit.
1074 if (video
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
)
1075 pipe
->max_timeperframe
= vfh
->timeperframe
;
1077 video
->queue
= &vfh
->queue
;
1078 INIT_LIST_HEAD(&video
->dmaqueue
);
1079 atomic_set(&pipe
->frame_number
, -1);
1081 ret
= omap3isp_video_queue_streamon(&vfh
->queue
);
1083 goto err_check_format
;
1085 /* In sensor-to-memory mode, the stream can be started synchronously
1086 * to the stream on command. In memory-to-memory mode, it will be
1087 * started when buffers are queued on both the input and output.
1089 if (pipe
->input
== NULL
) {
1090 ret
= omap3isp_pipeline_set_stream(pipe
,
1091 ISP_PIPELINE_STREAM_CONTINUOUS
);
1093 goto err_set_stream
;
1094 spin_lock_irqsave(&video
->queue
->irqlock
, flags
);
1095 if (list_empty(&video
->dmaqueue
))
1096 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
1097 spin_unlock_irqrestore(&video
->queue
->irqlock
, flags
);
1100 video
->streaming
= 1;
1102 mutex_unlock(&video
->stream_lock
);
1106 omap3isp_video_queue_streamoff(&vfh
->queue
);
1108 media_entity_pipeline_stop(&video
->video
.entity
);
1110 if (video
->isp
->pdata
->set_constraints
)
1111 video
->isp
->pdata
->set_constraints(video
->isp
, false);
1112 /* The DMA queue must be emptied here, otherwise CCDC interrupts that
1113 * will get triggered the next time the CCDC is powered up will try to
1114 * access buffers that might have been freed but still present in the
1115 * DMA queue. This can easily get triggered if the above
1116 * omap3isp_pipeline_set_stream() call fails on a system with a
1117 * free-running sensor.
1119 INIT_LIST_HEAD(&video
->dmaqueue
);
1120 video
->queue
= NULL
;
1122 mutex_unlock(&video
->stream_lock
);
1127 isp_video_streamoff(struct file
*file
, void *fh
, enum v4l2_buf_type type
)
1129 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
1130 struct isp_video
*video
= video_drvdata(file
);
1131 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
1132 enum isp_pipeline_state state
;
1133 unsigned int streaming
;
1134 unsigned long flags
;
1136 if (type
!= video
->type
)
1139 mutex_lock(&video
->stream_lock
);
1141 /* Make sure we're not streaming yet. */
1142 mutex_lock(&vfh
->queue
.lock
);
1143 streaming
= vfh
->queue
.streaming
;
1144 mutex_unlock(&vfh
->queue
.lock
);
1149 /* Update the pipeline state. */
1150 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1151 state
= ISP_PIPELINE_STREAM_OUTPUT
1152 | ISP_PIPELINE_QUEUE_OUTPUT
;
1154 state
= ISP_PIPELINE_STREAM_INPUT
1155 | ISP_PIPELINE_QUEUE_INPUT
;
1157 spin_lock_irqsave(&pipe
->lock
, flags
);
1158 pipe
->state
&= ~state
;
1159 spin_unlock_irqrestore(&pipe
->lock
, flags
);
1161 /* Stop the stream. */
1162 omap3isp_pipeline_set_stream(pipe
, ISP_PIPELINE_STREAM_STOPPED
);
1163 omap3isp_video_queue_streamoff(&vfh
->queue
);
1164 video
->queue
= NULL
;
1165 video
->streaming
= 0;
1167 if (video
->isp
->pdata
->set_constraints
)
1168 video
->isp
->pdata
->set_constraints(video
->isp
, false);
1169 media_entity_pipeline_stop(&video
->video
.entity
);
1172 mutex_unlock(&video
->stream_lock
);
1177 isp_video_enum_input(struct file
*file
, void *fh
, struct v4l2_input
*input
)
1179 if (input
->index
> 0)
1182 strlcpy(input
->name
, "camera", sizeof(input
->name
));
1183 input
->type
= V4L2_INPUT_TYPE_CAMERA
;
1189 isp_video_g_input(struct file
*file
, void *fh
, unsigned int *input
)
1197 isp_video_s_input(struct file
*file
, void *fh
, unsigned int input
)
1199 return input
== 0 ? 0 : -EINVAL
;
1202 static const struct v4l2_ioctl_ops isp_video_ioctl_ops
= {
1203 .vidioc_querycap
= isp_video_querycap
,
1204 .vidioc_g_fmt_vid_cap
= isp_video_get_format
,
1205 .vidioc_s_fmt_vid_cap
= isp_video_set_format
,
1206 .vidioc_try_fmt_vid_cap
= isp_video_try_format
,
1207 .vidioc_g_fmt_vid_out
= isp_video_get_format
,
1208 .vidioc_s_fmt_vid_out
= isp_video_set_format
,
1209 .vidioc_try_fmt_vid_out
= isp_video_try_format
,
1210 .vidioc_cropcap
= isp_video_cropcap
,
1211 .vidioc_g_crop
= isp_video_get_crop
,
1212 .vidioc_s_crop
= isp_video_set_crop
,
1213 .vidioc_g_parm
= isp_video_get_param
,
1214 .vidioc_s_parm
= isp_video_set_param
,
1215 .vidioc_reqbufs
= isp_video_reqbufs
,
1216 .vidioc_querybuf
= isp_video_querybuf
,
1217 .vidioc_qbuf
= isp_video_qbuf
,
1218 .vidioc_dqbuf
= isp_video_dqbuf
,
1219 .vidioc_streamon
= isp_video_streamon
,
1220 .vidioc_streamoff
= isp_video_streamoff
,
1221 .vidioc_enum_input
= isp_video_enum_input
,
1222 .vidioc_g_input
= isp_video_g_input
,
1223 .vidioc_s_input
= isp_video_s_input
,
1226 /* -----------------------------------------------------------------------------
1227 * V4L2 file operations
1230 static int isp_video_open(struct file
*file
)
1232 struct isp_video
*video
= video_drvdata(file
);
1233 struct isp_video_fh
*handle
;
1236 handle
= kzalloc(sizeof(*handle
), GFP_KERNEL
);
1240 v4l2_fh_init(&handle
->vfh
, &video
->video
);
1241 v4l2_fh_add(&handle
->vfh
);
1243 /* If this is the first user, initialise the pipeline. */
1244 if (omap3isp_get(video
->isp
) == NULL
) {
1249 ret
= omap3isp_pipeline_pm_use(&video
->video
.entity
, 1);
1251 omap3isp_put(video
->isp
);
1255 omap3isp_video_queue_init(&handle
->queue
, video
->type
,
1256 &isp_video_queue_ops
, video
->isp
->dev
,
1257 sizeof(struct isp_buffer
));
1259 memset(&handle
->format
, 0, sizeof(handle
->format
));
1260 handle
->format
.type
= video
->type
;
1261 handle
->timeperframe
.denominator
= 1;
1263 handle
->video
= video
;
1264 file
->private_data
= &handle
->vfh
;
1268 v4l2_fh_del(&handle
->vfh
);
1275 static int isp_video_release(struct file
*file
)
1277 struct isp_video
*video
= video_drvdata(file
);
1278 struct v4l2_fh
*vfh
= file
->private_data
;
1279 struct isp_video_fh
*handle
= to_isp_video_fh(vfh
);
1281 /* Disable streaming and free the buffers queue resources. */
1282 isp_video_streamoff(file
, vfh
, video
->type
);
1284 mutex_lock(&handle
->queue
.lock
);
1285 omap3isp_video_queue_cleanup(&handle
->queue
);
1286 mutex_unlock(&handle
->queue
.lock
);
1288 omap3isp_pipeline_pm_use(&video
->video
.entity
, 0);
1290 /* Release the file handle. */
1293 file
->private_data
= NULL
;
1295 omap3isp_put(video
->isp
);
1300 static unsigned int isp_video_poll(struct file
*file
, poll_table
*wait
)
1302 struct isp_video_fh
*vfh
= to_isp_video_fh(file
->private_data
);
1303 struct isp_video_queue
*queue
= &vfh
->queue
;
1305 return omap3isp_video_queue_poll(queue
, file
, wait
);
1308 static int isp_video_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1310 struct isp_video_fh
*vfh
= to_isp_video_fh(file
->private_data
);
1312 return omap3isp_video_queue_mmap(&vfh
->queue
, vma
);
1315 static struct v4l2_file_operations isp_video_fops
= {
1316 .owner
= THIS_MODULE
,
1317 .unlocked_ioctl
= video_ioctl2
,
1318 .open
= isp_video_open
,
1319 .release
= isp_video_release
,
1320 .poll
= isp_video_poll
,
1321 .mmap
= isp_video_mmap
,
1324 /* -----------------------------------------------------------------------------
1328 static const struct isp_video_operations isp_video_dummy_ops
= {
1331 int omap3isp_video_init(struct isp_video
*video
, const char *name
)
1333 const char *direction
;
1336 switch (video
->type
) {
1337 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1338 direction
= "output";
1339 video
->pad
.flags
= MEDIA_PAD_FL_SINK
;
1341 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1342 direction
= "input";
1343 video
->pad
.flags
= MEDIA_PAD_FL_SOURCE
;
1344 video
->video
.vfl_dir
= VFL_DIR_TX
;
1351 ret
= media_entity_init(&video
->video
.entity
, 1, &video
->pad
, 0);
1355 mutex_init(&video
->mutex
);
1356 atomic_set(&video
->active
, 0);
1358 spin_lock_init(&video
->pipe
.lock
);
1359 mutex_init(&video
->stream_lock
);
1361 /* Initialize the video device. */
1362 if (video
->ops
== NULL
)
1363 video
->ops
= &isp_video_dummy_ops
;
1365 video
->video
.fops
= &isp_video_fops
;
1366 snprintf(video
->video
.name
, sizeof(video
->video
.name
),
1367 "OMAP3 ISP %s %s", name
, direction
);
1368 video
->video
.vfl_type
= VFL_TYPE_GRABBER
;
1369 video
->video
.release
= video_device_release_empty
;
1370 video
->video
.ioctl_ops
= &isp_video_ioctl_ops
;
1371 video
->pipe
.stream_state
= ISP_PIPELINE_STREAM_STOPPED
;
1373 video_set_drvdata(&video
->video
, video
);
1378 void omap3isp_video_cleanup(struct isp_video
*video
)
1380 media_entity_cleanup(&video
->video
.entity
);
1381 mutex_destroy(&video
->stream_lock
);
1382 mutex_destroy(&video
->mutex
);
1385 int omap3isp_video_register(struct isp_video
*video
, struct v4l2_device
*vdev
)
1389 video
->video
.v4l2_dev
= vdev
;
1391 ret
= video_register_device(&video
->video
, VFL_TYPE_GRABBER
, -1);
1393 printk(KERN_ERR
"%s: could not register video device (%d)\n",
1399 void omap3isp_video_unregister(struct isp_video
*video
)
1401 if (video_is_registered(&video
->video
))
1402 video_unregister_device(&video
->video
);