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/iommu.h>
39 #include <plat/iovmm.h>
40 #include <plat/omap-pm.h>
46 /* -----------------------------------------------------------------------------
51 * NOTE: When adding new media bus codes, always remember to add
52 * corresponding in-memory formats to the table below!!!
54 static struct isp_format_info formats
[] = {
55 { V4L2_MBUS_FMT_Y8_1X8
, V4L2_MBUS_FMT_Y8_1X8
,
56 V4L2_MBUS_FMT_Y8_1X8
, V4L2_MBUS_FMT_Y8_1X8
,
57 V4L2_PIX_FMT_GREY
, 8, 1, },
58 { V4L2_MBUS_FMT_Y10_1X10
, V4L2_MBUS_FMT_Y10_1X10
,
59 V4L2_MBUS_FMT_Y10_1X10
, V4L2_MBUS_FMT_Y8_1X8
,
60 V4L2_PIX_FMT_Y10
, 10, 2, },
61 { V4L2_MBUS_FMT_Y12_1X12
, V4L2_MBUS_FMT_Y10_1X10
,
62 V4L2_MBUS_FMT_Y12_1X12
, V4L2_MBUS_FMT_Y8_1X8
,
63 V4L2_PIX_FMT_Y12
, 12, 2, },
64 { V4L2_MBUS_FMT_SBGGR8_1X8
, V4L2_MBUS_FMT_SBGGR8_1X8
,
65 V4L2_MBUS_FMT_SBGGR8_1X8
, V4L2_MBUS_FMT_SBGGR8_1X8
,
66 V4L2_PIX_FMT_SBGGR8
, 8, 1, },
67 { V4L2_MBUS_FMT_SGBRG8_1X8
, V4L2_MBUS_FMT_SGBRG8_1X8
,
68 V4L2_MBUS_FMT_SGBRG8_1X8
, V4L2_MBUS_FMT_SGBRG8_1X8
,
69 V4L2_PIX_FMT_SGBRG8
, 8, 1, },
70 { V4L2_MBUS_FMT_SGRBG8_1X8
, V4L2_MBUS_FMT_SGRBG8_1X8
,
71 V4L2_MBUS_FMT_SGRBG8_1X8
, V4L2_MBUS_FMT_SGRBG8_1X8
,
72 V4L2_PIX_FMT_SGRBG8
, 8, 1, },
73 { V4L2_MBUS_FMT_SRGGB8_1X8
, V4L2_MBUS_FMT_SRGGB8_1X8
,
74 V4L2_MBUS_FMT_SRGGB8_1X8
, V4L2_MBUS_FMT_SRGGB8_1X8
,
75 V4L2_PIX_FMT_SRGGB8
, 8, 1, },
76 { V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8
, V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8
,
77 V4L2_MBUS_FMT_SBGGR10_1X10
, 0,
78 V4L2_PIX_FMT_SBGGR10DPCM8
, 8, 1, },
79 { V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8
, V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8
,
80 V4L2_MBUS_FMT_SGBRG10_1X10
, 0,
81 V4L2_PIX_FMT_SGBRG10DPCM8
, 8, 1, },
82 { V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8
, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8
,
83 V4L2_MBUS_FMT_SGRBG10_1X10
, 0,
84 V4L2_PIX_FMT_SGRBG10DPCM8
, 8, 1, },
85 { V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8
, V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8
,
86 V4L2_MBUS_FMT_SRGGB10_1X10
, 0,
87 V4L2_PIX_FMT_SRGGB10DPCM8
, 8, 1, },
88 { V4L2_MBUS_FMT_SBGGR10_1X10
, V4L2_MBUS_FMT_SBGGR10_1X10
,
89 V4L2_MBUS_FMT_SBGGR10_1X10
, V4L2_MBUS_FMT_SBGGR8_1X8
,
90 V4L2_PIX_FMT_SBGGR10
, 10, 2, },
91 { V4L2_MBUS_FMT_SGBRG10_1X10
, V4L2_MBUS_FMT_SGBRG10_1X10
,
92 V4L2_MBUS_FMT_SGBRG10_1X10
, V4L2_MBUS_FMT_SGBRG8_1X8
,
93 V4L2_PIX_FMT_SGBRG10
, 10, 2, },
94 { V4L2_MBUS_FMT_SGRBG10_1X10
, V4L2_MBUS_FMT_SGRBG10_1X10
,
95 V4L2_MBUS_FMT_SGRBG10_1X10
, V4L2_MBUS_FMT_SGRBG8_1X8
,
96 V4L2_PIX_FMT_SGRBG10
, 10, 2, },
97 { V4L2_MBUS_FMT_SRGGB10_1X10
, V4L2_MBUS_FMT_SRGGB10_1X10
,
98 V4L2_MBUS_FMT_SRGGB10_1X10
, V4L2_MBUS_FMT_SRGGB8_1X8
,
99 V4L2_PIX_FMT_SRGGB10
, 10, 2, },
100 { V4L2_MBUS_FMT_SBGGR12_1X12
, V4L2_MBUS_FMT_SBGGR10_1X10
,
101 V4L2_MBUS_FMT_SBGGR12_1X12
, V4L2_MBUS_FMT_SBGGR8_1X8
,
102 V4L2_PIX_FMT_SBGGR12
, 12, 2, },
103 { V4L2_MBUS_FMT_SGBRG12_1X12
, V4L2_MBUS_FMT_SGBRG10_1X10
,
104 V4L2_MBUS_FMT_SGBRG12_1X12
, V4L2_MBUS_FMT_SGBRG8_1X8
,
105 V4L2_PIX_FMT_SGBRG12
, 12, 2, },
106 { V4L2_MBUS_FMT_SGRBG12_1X12
, V4L2_MBUS_FMT_SGRBG10_1X10
,
107 V4L2_MBUS_FMT_SGRBG12_1X12
, V4L2_MBUS_FMT_SGRBG8_1X8
,
108 V4L2_PIX_FMT_SGRBG12
, 12, 2, },
109 { V4L2_MBUS_FMT_SRGGB12_1X12
, V4L2_MBUS_FMT_SRGGB10_1X10
,
110 V4L2_MBUS_FMT_SRGGB12_1X12
, V4L2_MBUS_FMT_SRGGB8_1X8
,
111 V4L2_PIX_FMT_SRGGB12
, 12, 2, },
112 { V4L2_MBUS_FMT_UYVY8_1X16
, V4L2_MBUS_FMT_UYVY8_1X16
,
113 V4L2_MBUS_FMT_UYVY8_1X16
, 0,
114 V4L2_PIX_FMT_UYVY
, 16, 2, },
115 { V4L2_MBUS_FMT_YUYV8_1X16
, V4L2_MBUS_FMT_YUYV8_1X16
,
116 V4L2_MBUS_FMT_YUYV8_1X16
, 0,
117 V4L2_PIX_FMT_YUYV
, 16, 2, },
118 { V4L2_MBUS_FMT_UYVY8_2X8
, V4L2_MBUS_FMT_UYVY8_2X8
,
119 V4L2_MBUS_FMT_UYVY8_2X8
, 0,
120 V4L2_PIX_FMT_UYVY
, 8, 2, },
121 { V4L2_MBUS_FMT_YUYV8_2X8
, V4L2_MBUS_FMT_YUYV8_2X8
,
122 V4L2_MBUS_FMT_YUYV8_2X8
, 0,
123 V4L2_PIX_FMT_YUYV
, 8, 2, },
124 /* Empty entry to catch the unsupported pixel code (0) used by the CCDC
125 * module and avoid NULL pointer dereferences.
130 const struct isp_format_info
*
131 omap3isp_video_format_info(enum v4l2_mbus_pixelcode code
)
135 for (i
= 0; i
< ARRAY_SIZE(formats
); ++i
) {
136 if (formats
[i
].code
== code
)
144 * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format
145 * @video: ISP video instance
146 * @mbus: v4l2_mbus_framefmt format (input)
147 * @pix: v4l2_pix_format format (output)
149 * Fill the output pix structure with information from the input mbus format.
150 * The bytesperline and sizeimage fields are computed from the requested bytes
151 * per line value in the pix format and information from the video instance.
153 * Return the number of padding bytes at end of line.
155 static unsigned int isp_video_mbus_to_pix(const struct isp_video
*video
,
156 const struct v4l2_mbus_framefmt
*mbus
,
157 struct v4l2_pix_format
*pix
)
159 unsigned int bpl
= pix
->bytesperline
;
160 unsigned int min_bpl
;
163 memset(pix
, 0, sizeof(*pix
));
164 pix
->width
= mbus
->width
;
165 pix
->height
= mbus
->height
;
167 for (i
= 0; i
< ARRAY_SIZE(formats
); ++i
) {
168 if (formats
[i
].code
== mbus
->code
)
172 if (WARN_ON(i
== ARRAY_SIZE(formats
)))
175 min_bpl
= pix
->width
* formats
[i
].bpp
;
177 /* Clamp the requested bytes per line value. If the maximum bytes per
178 * line value is zero, the module doesn't support user configurable line
179 * sizes. Override the requested value with the minimum in that case.
182 bpl
= clamp(bpl
, min_bpl
, video
->bpl_max
);
186 if (!video
->bpl_zero_padding
|| bpl
!= min_bpl
)
187 bpl
= ALIGN(bpl
, video
->bpl_alignment
);
189 pix
->pixelformat
= formats
[i
].pixelformat
;
190 pix
->bytesperline
= bpl
;
191 pix
->sizeimage
= pix
->bytesperline
* pix
->height
;
192 pix
->colorspace
= mbus
->colorspace
;
193 pix
->field
= mbus
->field
;
195 return bpl
- min_bpl
;
198 static void isp_video_pix_to_mbus(const struct v4l2_pix_format
*pix
,
199 struct v4l2_mbus_framefmt
*mbus
)
203 memset(mbus
, 0, sizeof(*mbus
));
204 mbus
->width
= pix
->width
;
205 mbus
->height
= pix
->height
;
207 /* Skip the last format in the loop so that it will be selected if no
210 for (i
= 0; i
< ARRAY_SIZE(formats
) - 1; ++i
) {
211 if (formats
[i
].pixelformat
== pix
->pixelformat
)
215 mbus
->code
= formats
[i
].code
;
216 mbus
->colorspace
= pix
->colorspace
;
217 mbus
->field
= pix
->field
;
220 static struct v4l2_subdev
*
221 isp_video_remote_subdev(struct isp_video
*video
, u32
*pad
)
223 struct media_pad
*remote
;
225 remote
= media_entity_remote_source(&video
->pad
);
227 if (remote
== NULL
||
228 media_entity_type(remote
->entity
) != MEDIA_ENT_T_V4L2_SUBDEV
)
232 *pad
= remote
->index
;
234 return media_entity_to_v4l2_subdev(remote
->entity
);
237 /* Return a pointer to the ISP video instance at the far end of the pipeline. */
238 static int isp_video_get_graph_data(struct isp_video
*video
,
239 struct isp_pipeline
*pipe
)
241 struct media_entity_graph graph
;
242 struct media_entity
*entity
= &video
->video
.entity
;
243 struct media_device
*mdev
= entity
->parent
;
244 struct isp_video
*far_end
= NULL
;
246 mutex_lock(&mdev
->graph_mutex
);
247 media_entity_graph_walk_start(&graph
, entity
);
249 while ((entity
= media_entity_graph_walk_next(&graph
))) {
250 struct isp_video
*__video
;
252 pipe
->entities
|= 1 << entity
->id
;
257 if (entity
== &video
->video
.entity
)
260 if (media_entity_type(entity
) != MEDIA_ENT_T_DEVNODE
)
263 __video
= to_isp_video(media_entity_to_video_device(entity
));
264 if (__video
->type
!= video
->type
)
268 mutex_unlock(&mdev
->graph_mutex
);
270 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
271 pipe
->input
= far_end
;
272 pipe
->output
= video
;
278 pipe
->output
= far_end
;
285 * Validate a pipeline by checking both ends of all links for format
288 * Compute the minimum time per frame value as the maximum of time per frame
289 * limits reported by every block in the pipeline.
291 * Return 0 if all formats match, or -EPIPE if at least one link is found with
292 * different formats on its two ends or if the pipeline doesn't start with a
293 * video source (either a subdev with no input pad, or a non-subdev entity).
295 static int isp_video_validate_pipeline(struct isp_pipeline
*pipe
)
297 struct isp_device
*isp
= pipe
->output
->isp
;
298 struct media_pad
*pad
;
299 struct v4l2_subdev
*subdev
;
301 subdev
= isp_video_remote_subdev(pipe
->output
, NULL
);
306 /* Retrieve the sink format */
307 pad
= &subdev
->entity
.pads
[0];
308 if (!(pad
->flags
& MEDIA_PAD_FL_SINK
))
311 /* Update the maximum frame rate */
312 if (subdev
== &isp
->isp_res
.subdev
)
313 omap3isp_resizer_max_rate(&isp
->isp_res
,
316 /* Retrieve the source format. Return an error if no source
317 * entity can be found, and stop checking the pipeline if the
318 * source entity isn't a subdev.
320 pad
= media_entity_remote_source(pad
);
324 if (media_entity_type(pad
->entity
) != MEDIA_ENT_T_V4L2_SUBDEV
)
327 subdev
= media_entity_to_v4l2_subdev(pad
->entity
);
334 __isp_video_get_format(struct isp_video
*video
, struct v4l2_format
*format
)
336 struct v4l2_subdev_format fmt
;
337 struct v4l2_subdev
*subdev
;
341 subdev
= isp_video_remote_subdev(video
, &pad
);
345 mutex_lock(&video
->mutex
);
348 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
349 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &fmt
);
350 if (ret
== -ENOIOCTLCMD
)
353 mutex_unlock(&video
->mutex
);
358 format
->type
= video
->type
;
359 return isp_video_mbus_to_pix(video
, &fmt
.format
, &format
->fmt
.pix
);
363 isp_video_check_format(struct isp_video
*video
, struct isp_video_fh
*vfh
)
365 struct v4l2_format format
;
368 memcpy(&format
, &vfh
->format
, sizeof(format
));
369 ret
= __isp_video_get_format(video
, &format
);
373 if (vfh
->format
.fmt
.pix
.pixelformat
!= format
.fmt
.pix
.pixelformat
||
374 vfh
->format
.fmt
.pix
.height
!= format
.fmt
.pix
.height
||
375 vfh
->format
.fmt
.pix
.width
!= format
.fmt
.pix
.width
||
376 vfh
->format
.fmt
.pix
.bytesperline
!= format
.fmt
.pix
.bytesperline
||
377 vfh
->format
.fmt
.pix
.sizeimage
!= format
.fmt
.pix
.sizeimage
)
383 /* -----------------------------------------------------------------------------
387 #define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8)
390 * ispmmu_vmap - Wrapper for Virtual memory mapping of a scatter gather list
391 * @dev: Device pointer specific to the OMAP3 ISP.
392 * @sglist: Pointer to source Scatter gather list to allocate.
393 * @sglen: Number of elements of the scatter-gatter list.
395 * Returns a resulting mapped device address by the ISP MMU, or -ENOMEM if
396 * we ran out of memory.
399 ispmmu_vmap(struct isp_device
*isp
, const struct scatterlist
*sglist
, int sglen
)
401 struct sg_table
*sgt
;
404 sgt
= kmalloc(sizeof(*sgt
), GFP_KERNEL
);
408 sgt
->sgl
= (struct scatterlist
*)sglist
;
410 sgt
->orig_nents
= sglen
;
412 da
= omap_iommu_vmap(isp
->domain
, isp
->dev
, 0, sgt
, IOMMU_FLAG
);
413 if (IS_ERR_VALUE(da
))
420 * ispmmu_vunmap - Unmap a device address from the ISP MMU
421 * @dev: Device pointer specific to the OMAP3 ISP.
422 * @da: Device address generated from a ispmmu_vmap call.
424 static void ispmmu_vunmap(struct isp_device
*isp
, dma_addr_t da
)
426 struct sg_table
*sgt
;
428 sgt
= omap_iommu_vunmap(isp
->domain
, isp
->dev
, (u32
)da
);
432 /* -----------------------------------------------------------------------------
433 * Video queue operations
436 static void isp_video_queue_prepare(struct isp_video_queue
*queue
,
437 unsigned int *nbuffers
, unsigned int *size
)
439 struct isp_video_fh
*vfh
=
440 container_of(queue
, struct isp_video_fh
, queue
);
441 struct isp_video
*video
= vfh
->video
;
443 *size
= vfh
->format
.fmt
.pix
.sizeimage
;
447 *nbuffers
= min(*nbuffers
, video
->capture_mem
/ PAGE_ALIGN(*size
));
450 static void isp_video_buffer_cleanup(struct isp_video_buffer
*buf
)
452 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
453 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
454 struct isp_video
*video
= vfh
->video
;
456 if (buffer
->isp_addr
) {
457 ispmmu_vunmap(video
->isp
, buffer
->isp_addr
);
458 buffer
->isp_addr
= 0;
462 static int isp_video_buffer_prepare(struct isp_video_buffer
*buf
)
464 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
465 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
466 struct isp_video
*video
= vfh
->video
;
469 addr
= ispmmu_vmap(video
->isp
, buf
->sglist
, buf
->sglen
);
470 if (IS_ERR_VALUE(addr
))
473 if (!IS_ALIGNED(addr
, 32)) {
474 dev_dbg(video
->isp
->dev
, "Buffer address must be "
475 "aligned to 32 bytes boundary.\n");
476 ispmmu_vunmap(video
->isp
, buffer
->isp_addr
);
480 buf
->vbuf
.bytesused
= vfh
->format
.fmt
.pix
.sizeimage
;
481 buffer
->isp_addr
= addr
;
486 * isp_video_buffer_queue - Add buffer to streaming queue
489 * In memory-to-memory mode, start streaming on the pipeline if buffers are
490 * queued on both the input and the output, if the pipeline isn't already busy.
491 * If the pipeline is busy, it will be restarted in the output module interrupt
494 static void isp_video_buffer_queue(struct isp_video_buffer
*buf
)
496 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
497 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
498 struct isp_video
*video
= vfh
->video
;
499 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
500 enum isp_pipeline_state state
;
505 empty
= list_empty(&video
->dmaqueue
);
506 list_add_tail(&buffer
->buffer
.irqlist
, &video
->dmaqueue
);
509 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
510 state
= ISP_PIPELINE_QUEUE_OUTPUT
;
512 state
= ISP_PIPELINE_QUEUE_INPUT
;
514 spin_lock_irqsave(&pipe
->lock
, flags
);
515 pipe
->state
|= state
;
516 video
->ops
->queue(video
, buffer
);
517 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_QUEUED
;
519 start
= isp_pipeline_ready(pipe
);
521 pipe
->state
|= ISP_PIPELINE_STREAM
;
522 spin_unlock_irqrestore(&pipe
->lock
, flags
);
525 omap3isp_pipeline_set_stream(pipe
,
526 ISP_PIPELINE_STREAM_SINGLESHOT
);
530 static const struct isp_video_queue_operations isp_video_queue_ops
= {
531 .queue_prepare
= &isp_video_queue_prepare
,
532 .buffer_prepare
= &isp_video_buffer_prepare
,
533 .buffer_queue
= &isp_video_buffer_queue
,
534 .buffer_cleanup
= &isp_video_buffer_cleanup
,
538 * omap3isp_video_buffer_next - Complete the current buffer and return the next
539 * @video: ISP video object
541 * Remove the current video buffer from the DMA queue and fill its timestamp,
542 * field count and state fields before waking up its completion handler.
544 * For capture video nodes the buffer state is set to ISP_BUF_STATE_DONE if no
545 * error has been flagged in the pipeline, or to ISP_BUF_STATE_ERROR otherwise.
546 * For video output nodes the buffer state is always set to ISP_BUF_STATE_DONE.
548 * The DMA queue is expected to contain at least one buffer.
550 * Return a pointer to the next buffer in the DMA queue, or NULL if the queue is
553 struct isp_buffer
*omap3isp_video_buffer_next(struct isp_video
*video
)
555 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
556 struct isp_video_queue
*queue
= video
->queue
;
557 enum isp_pipeline_state state
;
558 struct isp_video_buffer
*buf
;
562 spin_lock_irqsave(&queue
->irqlock
, flags
);
563 if (WARN_ON(list_empty(&video
->dmaqueue
))) {
564 spin_unlock_irqrestore(&queue
->irqlock
, flags
);
568 buf
= list_first_entry(&video
->dmaqueue
, struct isp_video_buffer
,
570 list_del(&buf
->irqlist
);
571 spin_unlock_irqrestore(&queue
->irqlock
, flags
);
574 buf
->vbuf
.timestamp
.tv_sec
= ts
.tv_sec
;
575 buf
->vbuf
.timestamp
.tv_usec
= ts
.tv_nsec
/ NSEC_PER_USEC
;
577 /* Do frame number propagation only if this is the output video node.
578 * Frame number either comes from the CSI receivers or it gets
579 * incremented here if H3A is not active.
580 * Note: There is no guarantee that the output buffer will finish
581 * first, so the input number might lag behind by 1 in some cases.
583 if (video
== pipe
->output
&& !pipe
->do_propagation
)
584 buf
->vbuf
.sequence
= atomic_inc_return(&pipe
->frame_number
);
586 buf
->vbuf
.sequence
= atomic_read(&pipe
->frame_number
);
588 /* Report pipeline errors to userspace on the capture device side. */
589 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& pipe
->error
) {
590 buf
->state
= ISP_BUF_STATE_ERROR
;
593 buf
->state
= ISP_BUF_STATE_DONE
;
598 if (list_empty(&video
->dmaqueue
)) {
599 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
600 state
= ISP_PIPELINE_QUEUE_OUTPUT
601 | ISP_PIPELINE_STREAM
;
603 state
= ISP_PIPELINE_QUEUE_INPUT
604 | ISP_PIPELINE_STREAM
;
606 spin_lock_irqsave(&pipe
->lock
, flags
);
607 pipe
->state
&= ~state
;
608 if (video
->pipe
.stream_state
== ISP_PIPELINE_STREAM_CONTINUOUS
)
609 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
610 spin_unlock_irqrestore(&pipe
->lock
, flags
);
614 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& pipe
->input
!= NULL
) {
615 spin_lock_irqsave(&pipe
->lock
, flags
);
616 pipe
->state
&= ~ISP_PIPELINE_STREAM
;
617 spin_unlock_irqrestore(&pipe
->lock
, flags
);
620 buf
= list_first_entry(&video
->dmaqueue
, struct isp_video_buffer
,
622 buf
->state
= ISP_BUF_STATE_ACTIVE
;
623 return to_isp_buffer(buf
);
627 * omap3isp_video_resume - Perform resume operation on the buffers
628 * @video: ISP video object
629 * @continuous: Pipeline is in single shot mode if 0 or continuous mode otherwise
631 * This function is intended to be used on suspend/resume scenario. It
632 * requests video queue layer to discard buffers marked as DONE if it's in
633 * continuous mode and requests ISP modules to queue again the ACTIVE buffer
636 void omap3isp_video_resume(struct isp_video
*video
, int continuous
)
638 struct isp_buffer
*buf
= NULL
;
640 if (continuous
&& video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
641 omap3isp_video_queue_discard_done(video
->queue
);
643 if (!list_empty(&video
->dmaqueue
)) {
644 buf
= list_first_entry(&video
->dmaqueue
,
645 struct isp_buffer
, buffer
.irqlist
);
646 video
->ops
->queue(video
, buf
);
647 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_QUEUED
;
650 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
654 /* -----------------------------------------------------------------------------
659 isp_video_querycap(struct file
*file
, void *fh
, struct v4l2_capability
*cap
)
661 struct isp_video
*video
= video_drvdata(file
);
663 strlcpy(cap
->driver
, ISP_VIDEO_DRIVER_NAME
, sizeof(cap
->driver
));
664 strlcpy(cap
->card
, video
->video
.name
, sizeof(cap
->card
));
665 strlcpy(cap
->bus_info
, "media", sizeof(cap
->bus_info
));
667 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
668 cap
->capabilities
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
670 cap
->capabilities
= V4L2_CAP_VIDEO_OUTPUT
| V4L2_CAP_STREAMING
;
676 isp_video_get_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
678 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
679 struct isp_video
*video
= video_drvdata(file
);
681 if (format
->type
!= video
->type
)
684 mutex_lock(&video
->mutex
);
685 *format
= vfh
->format
;
686 mutex_unlock(&video
->mutex
);
692 isp_video_set_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
694 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
695 struct isp_video
*video
= video_drvdata(file
);
696 struct v4l2_mbus_framefmt fmt
;
698 if (format
->type
!= video
->type
)
701 mutex_lock(&video
->mutex
);
703 /* Fill the bytesperline and sizeimage fields by converting to media bus
704 * format and back to pixel format.
706 isp_video_pix_to_mbus(&format
->fmt
.pix
, &fmt
);
707 isp_video_mbus_to_pix(video
, &fmt
, &format
->fmt
.pix
);
709 vfh
->format
= *format
;
711 mutex_unlock(&video
->mutex
);
716 isp_video_try_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
718 struct isp_video
*video
= video_drvdata(file
);
719 struct v4l2_subdev_format fmt
;
720 struct v4l2_subdev
*subdev
;
724 if (format
->type
!= video
->type
)
727 subdev
= isp_video_remote_subdev(video
, &pad
);
731 isp_video_pix_to_mbus(&format
->fmt
.pix
, &fmt
.format
);
734 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
735 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &fmt
);
737 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
739 isp_video_mbus_to_pix(video
, &fmt
.format
, &format
->fmt
.pix
);
744 isp_video_cropcap(struct file
*file
, void *fh
, struct v4l2_cropcap
*cropcap
)
746 struct isp_video
*video
= video_drvdata(file
);
747 struct v4l2_subdev
*subdev
;
750 subdev
= isp_video_remote_subdev(video
, NULL
);
754 mutex_lock(&video
->mutex
);
755 ret
= v4l2_subdev_call(subdev
, video
, cropcap
, cropcap
);
756 mutex_unlock(&video
->mutex
);
758 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
762 isp_video_get_crop(struct file
*file
, void *fh
, struct v4l2_crop
*crop
)
764 struct isp_video
*video
= video_drvdata(file
);
765 struct v4l2_subdev_format format
;
766 struct v4l2_subdev
*subdev
;
770 subdev
= isp_video_remote_subdev(video
, &pad
);
774 /* Try the get crop operation first and fallback to get format if not
777 ret
= v4l2_subdev_call(subdev
, video
, g_crop
, crop
);
778 if (ret
!= -ENOIOCTLCMD
)
782 format
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
783 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &format
);
785 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
789 crop
->c
.width
= format
.format
.width
;
790 crop
->c
.height
= format
.format
.height
;
796 isp_video_set_crop(struct file
*file
, void *fh
, const struct v4l2_crop
*crop
)
798 struct isp_video
*video
= video_drvdata(file
);
799 struct v4l2_subdev
*subdev
;
802 subdev
= isp_video_remote_subdev(video
, NULL
);
806 mutex_lock(&video
->mutex
);
807 ret
= v4l2_subdev_call(subdev
, video
, s_crop
, crop
);
808 mutex_unlock(&video
->mutex
);
810 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
814 isp_video_get_param(struct file
*file
, void *fh
, struct v4l2_streamparm
*a
)
816 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
817 struct isp_video
*video
= video_drvdata(file
);
819 if (video
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
||
820 video
->type
!= a
->type
)
823 memset(a
, 0, sizeof(*a
));
824 a
->type
= V4L2_BUF_TYPE_VIDEO_OUTPUT
;
825 a
->parm
.output
.capability
= V4L2_CAP_TIMEPERFRAME
;
826 a
->parm
.output
.timeperframe
= vfh
->timeperframe
;
832 isp_video_set_param(struct file
*file
, void *fh
, struct v4l2_streamparm
*a
)
834 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
835 struct isp_video
*video
= video_drvdata(file
);
837 if (video
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
||
838 video
->type
!= a
->type
)
841 if (a
->parm
.output
.timeperframe
.denominator
== 0)
842 a
->parm
.output
.timeperframe
.denominator
= 1;
844 vfh
->timeperframe
= a
->parm
.output
.timeperframe
;
850 isp_video_reqbufs(struct file
*file
, void *fh
, struct v4l2_requestbuffers
*rb
)
852 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
854 return omap3isp_video_queue_reqbufs(&vfh
->queue
, rb
);
858 isp_video_querybuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
860 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
862 return omap3isp_video_queue_querybuf(&vfh
->queue
, b
);
866 isp_video_qbuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
868 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
870 return omap3isp_video_queue_qbuf(&vfh
->queue
, b
);
874 isp_video_dqbuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
876 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
878 return omap3isp_video_queue_dqbuf(&vfh
->queue
, b
,
879 file
->f_flags
& O_NONBLOCK
);
882 static int isp_video_check_external_subdevs(struct isp_video
*video
,
883 struct isp_pipeline
*pipe
)
885 struct isp_device
*isp
= video
->isp
;
886 struct media_entity
*ents
[] = {
887 &isp
->isp_csi2a
.subdev
.entity
,
888 &isp
->isp_csi2c
.subdev
.entity
,
889 &isp
->isp_ccp2
.subdev
.entity
,
890 &isp
->isp_ccdc
.subdev
.entity
892 struct media_pad
*source_pad
;
893 struct media_entity
*source
= NULL
;
894 struct media_entity
*sink
;
895 struct v4l2_subdev_format fmt
;
896 struct v4l2_ext_controls ctrls
;
897 struct v4l2_ext_control ctrl
;
901 for (i
= 0; i
< ARRAY_SIZE(ents
); i
++) {
902 /* Is the entity part of the pipeline? */
903 if (!(pipe
->entities
& (1 << ents
[i
]->id
)))
906 /* ISP entities have always sink pad == 0. Find source. */
907 source_pad
= media_entity_remote_source(&ents
[i
]->pads
[0]);
908 if (source_pad
== NULL
)
911 source
= source_pad
->entity
;
917 dev_warn(isp
->dev
, "can't find source, failing now\n");
921 if (media_entity_type(source
) != MEDIA_ENT_T_V4L2_SUBDEV
)
924 pipe
->external
= media_entity_to_v4l2_subdev(source
);
926 fmt
.pad
= source_pad
->index
;
927 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
928 ret
= v4l2_subdev_call(media_entity_to_v4l2_subdev(sink
),
929 pad
, get_fmt
, NULL
, &fmt
);
930 if (unlikely(ret
< 0)) {
931 dev_warn(isp
->dev
, "get_fmt returned null!\n");
935 pipe
->external_width
=
936 omap3isp_video_format_info(fmt
.format
.code
)->width
;
938 memset(&ctrls
, 0, sizeof(ctrls
));
939 memset(&ctrl
, 0, sizeof(ctrl
));
941 ctrl
.id
= V4L2_CID_PIXEL_RATE
;
944 ctrls
.controls
= &ctrl
;
946 ret
= v4l2_g_ext_ctrls(pipe
->external
->ctrl_handler
, &ctrls
);
948 dev_warn(isp
->dev
, "no pixel rate control in subdev %s\n",
949 pipe
->external
->name
);
953 pipe
->external_rate
= ctrl
.value64
;
955 if (pipe
->entities
& (1 << isp
->isp_ccdc
.subdev
.entity
.id
)) {
956 unsigned int rate
= UINT_MAX
;
958 * Check that maximum allowed CCDC pixel rate isn't
959 * exceeded by the pixel rate.
961 omap3isp_ccdc_max_rate(&isp
->isp_ccdc
, &rate
);
962 if (pipe
->external_rate
> rate
)
972 * Every ISP pipeline has a single input and a single output. The input can be
973 * either a sensor or a video node. The output is always a video node.
975 * As every pipeline has an output video node, the ISP video objects at the
976 * pipeline output stores the pipeline state. It tracks the streaming state of
977 * both the input and output, as well as the availability of buffers.
979 * In sensor-to-memory mode, frames are always available at the pipeline input.
980 * Starting the sensor usually requires I2C transfers and must be done in
981 * interruptible context. The pipeline is started and stopped synchronously
982 * to the stream on/off commands. All modules in the pipeline will get their
983 * subdev set stream handler called. The module at the end of the pipeline must
984 * delay starting the hardware until buffers are available at its output.
986 * In memory-to-memory mode, starting/stopping the stream requires
987 * synchronization between the input and output. ISP modules can't be stopped
988 * in the middle of a frame, and at least some of the modules seem to become
989 * busy as soon as they're started, even if they don't receive a frame start
990 * event. For that reason frames need to be processed in single-shot mode. The
991 * driver needs to wait until a frame is completely processed and written to
992 * memory before restarting the pipeline for the next frame. Pipelined
993 * processing might be possible but requires more testing.
995 * Stream start must be delayed until buffers are available at both the input
996 * and output. The pipeline must be started in the videobuf queue callback with
997 * the buffers queue spinlock held. The modules subdev set stream operation must
1001 isp_video_streamon(struct file
*file
, void *fh
, enum v4l2_buf_type type
)
1003 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
1004 struct isp_video
*video
= video_drvdata(file
);
1005 enum isp_pipeline_state state
;
1006 struct isp_pipeline
*pipe
;
1007 unsigned long flags
;
1010 if (type
!= video
->type
)
1013 mutex_lock(&video
->stream_lock
);
1015 if (video
->streaming
) {
1016 mutex_unlock(&video
->stream_lock
);
1020 /* Start streaming on the pipeline. No link touching an entity in the
1021 * pipeline can be activated or deactivated once streaming is started.
1023 pipe
= video
->video
.entity
.pipe
1024 ? to_isp_pipeline(&video
->video
.entity
) : &video
->pipe
;
1028 if (video
->isp
->pdata
->set_constraints
)
1029 video
->isp
->pdata
->set_constraints(video
->isp
, true);
1030 pipe
->l3_ick
= clk_get_rate(video
->isp
->clock
[ISP_CLK_L3_ICK
]);
1031 pipe
->max_rate
= pipe
->l3_ick
;
1033 ret
= media_entity_pipeline_start(&video
->video
.entity
, &pipe
->pipe
);
1035 goto err_pipeline_start
;
1037 /* Verify that the currently configured format matches the output of
1038 * the connected subdev.
1040 ret
= isp_video_check_format(video
, vfh
);
1042 goto err_check_format
;
1044 video
->bpl_padding
= ret
;
1045 video
->bpl_value
= vfh
->format
.fmt
.pix
.bytesperline
;
1047 ret
= isp_video_get_graph_data(video
, pipe
);
1049 goto err_check_format
;
1051 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1052 state
= ISP_PIPELINE_STREAM_OUTPUT
| ISP_PIPELINE_IDLE_OUTPUT
;
1054 state
= ISP_PIPELINE_STREAM_INPUT
| ISP_PIPELINE_IDLE_INPUT
;
1056 ret
= isp_video_check_external_subdevs(video
, pipe
);
1058 goto err_check_format
;
1060 /* Validate the pipeline and update its state. */
1061 ret
= isp_video_validate_pipeline(pipe
);
1063 goto err_check_format
;
1065 pipe
->error
= false;
1067 spin_lock_irqsave(&pipe
->lock
, flags
);
1068 pipe
->state
&= ~ISP_PIPELINE_STREAM
;
1069 pipe
->state
|= state
;
1070 spin_unlock_irqrestore(&pipe
->lock
, flags
);
1072 /* Set the maximum time per frame as the value requested by userspace.
1073 * This is a soft limit that can be overridden if the hardware doesn't
1074 * support the request limit.
1076 if (video
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
)
1077 pipe
->max_timeperframe
= vfh
->timeperframe
;
1079 video
->queue
= &vfh
->queue
;
1080 INIT_LIST_HEAD(&video
->dmaqueue
);
1081 atomic_set(&pipe
->frame_number
, -1);
1083 ret
= omap3isp_video_queue_streamon(&vfh
->queue
);
1085 goto err_check_format
;
1087 /* In sensor-to-memory mode, the stream can be started synchronously
1088 * to the stream on command. In memory-to-memory mode, it will be
1089 * started when buffers are queued on both the input and output.
1091 if (pipe
->input
== NULL
) {
1092 ret
= omap3isp_pipeline_set_stream(pipe
,
1093 ISP_PIPELINE_STREAM_CONTINUOUS
);
1095 goto err_set_stream
;
1096 spin_lock_irqsave(&video
->queue
->irqlock
, flags
);
1097 if (list_empty(&video
->dmaqueue
))
1098 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
1099 spin_unlock_irqrestore(&video
->queue
->irqlock
, flags
);
1102 video
->streaming
= 1;
1104 mutex_unlock(&video
->stream_lock
);
1108 omap3isp_video_queue_streamoff(&vfh
->queue
);
1110 media_entity_pipeline_stop(&video
->video
.entity
);
1112 if (video
->isp
->pdata
->set_constraints
)
1113 video
->isp
->pdata
->set_constraints(video
->isp
, false);
1114 /* The DMA queue must be emptied here, otherwise CCDC interrupts that
1115 * will get triggered the next time the CCDC is powered up will try to
1116 * access buffers that might have been freed but still present in the
1117 * DMA queue. This can easily get triggered if the above
1118 * omap3isp_pipeline_set_stream() call fails on a system with a
1119 * free-running sensor.
1121 INIT_LIST_HEAD(&video
->dmaqueue
);
1122 video
->queue
= NULL
;
1124 mutex_unlock(&video
->stream_lock
);
1129 isp_video_streamoff(struct file
*file
, void *fh
, enum v4l2_buf_type type
)
1131 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
1132 struct isp_video
*video
= video_drvdata(file
);
1133 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
1134 enum isp_pipeline_state state
;
1135 unsigned int streaming
;
1136 unsigned long flags
;
1138 if (type
!= video
->type
)
1141 mutex_lock(&video
->stream_lock
);
1143 /* Make sure we're not streaming yet. */
1144 mutex_lock(&vfh
->queue
.lock
);
1145 streaming
= vfh
->queue
.streaming
;
1146 mutex_unlock(&vfh
->queue
.lock
);
1151 /* Update the pipeline state. */
1152 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1153 state
= ISP_PIPELINE_STREAM_OUTPUT
1154 | ISP_PIPELINE_QUEUE_OUTPUT
;
1156 state
= ISP_PIPELINE_STREAM_INPUT
1157 | ISP_PIPELINE_QUEUE_INPUT
;
1159 spin_lock_irqsave(&pipe
->lock
, flags
);
1160 pipe
->state
&= ~state
;
1161 spin_unlock_irqrestore(&pipe
->lock
, flags
);
1163 /* Stop the stream. */
1164 omap3isp_pipeline_set_stream(pipe
, ISP_PIPELINE_STREAM_STOPPED
);
1165 omap3isp_video_queue_streamoff(&vfh
->queue
);
1166 video
->queue
= NULL
;
1167 video
->streaming
= 0;
1169 if (video
->isp
->pdata
->set_constraints
)
1170 video
->isp
->pdata
->set_constraints(video
->isp
, false);
1171 media_entity_pipeline_stop(&video
->video
.entity
);
1174 mutex_unlock(&video
->stream_lock
);
1179 isp_video_enum_input(struct file
*file
, void *fh
, struct v4l2_input
*input
)
1181 if (input
->index
> 0)
1184 strlcpy(input
->name
, "camera", sizeof(input
->name
));
1185 input
->type
= V4L2_INPUT_TYPE_CAMERA
;
1191 isp_video_g_input(struct file
*file
, void *fh
, unsigned int *input
)
1199 isp_video_s_input(struct file
*file
, void *fh
, unsigned int input
)
1201 return input
== 0 ? 0 : -EINVAL
;
1204 static const struct v4l2_ioctl_ops isp_video_ioctl_ops
= {
1205 .vidioc_querycap
= isp_video_querycap
,
1206 .vidioc_g_fmt_vid_cap
= isp_video_get_format
,
1207 .vidioc_s_fmt_vid_cap
= isp_video_set_format
,
1208 .vidioc_try_fmt_vid_cap
= isp_video_try_format
,
1209 .vidioc_g_fmt_vid_out
= isp_video_get_format
,
1210 .vidioc_s_fmt_vid_out
= isp_video_set_format
,
1211 .vidioc_try_fmt_vid_out
= isp_video_try_format
,
1212 .vidioc_cropcap
= isp_video_cropcap
,
1213 .vidioc_g_crop
= isp_video_get_crop
,
1214 .vidioc_s_crop
= isp_video_set_crop
,
1215 .vidioc_g_parm
= isp_video_get_param
,
1216 .vidioc_s_parm
= isp_video_set_param
,
1217 .vidioc_reqbufs
= isp_video_reqbufs
,
1218 .vidioc_querybuf
= isp_video_querybuf
,
1219 .vidioc_qbuf
= isp_video_qbuf
,
1220 .vidioc_dqbuf
= isp_video_dqbuf
,
1221 .vidioc_streamon
= isp_video_streamon
,
1222 .vidioc_streamoff
= isp_video_streamoff
,
1223 .vidioc_enum_input
= isp_video_enum_input
,
1224 .vidioc_g_input
= isp_video_g_input
,
1225 .vidioc_s_input
= isp_video_s_input
,
1228 /* -----------------------------------------------------------------------------
1229 * V4L2 file operations
1232 static int isp_video_open(struct file
*file
)
1234 struct isp_video
*video
= video_drvdata(file
);
1235 struct isp_video_fh
*handle
;
1238 handle
= kzalloc(sizeof(*handle
), GFP_KERNEL
);
1242 v4l2_fh_init(&handle
->vfh
, &video
->video
);
1243 v4l2_fh_add(&handle
->vfh
);
1245 /* If this is the first user, initialise the pipeline. */
1246 if (omap3isp_get(video
->isp
) == NULL
) {
1251 ret
= omap3isp_pipeline_pm_use(&video
->video
.entity
, 1);
1253 omap3isp_put(video
->isp
);
1257 omap3isp_video_queue_init(&handle
->queue
, video
->type
,
1258 &isp_video_queue_ops
, video
->isp
->dev
,
1259 sizeof(struct isp_buffer
));
1261 memset(&handle
->format
, 0, sizeof(handle
->format
));
1262 handle
->format
.type
= video
->type
;
1263 handle
->timeperframe
.denominator
= 1;
1265 handle
->video
= video
;
1266 file
->private_data
= &handle
->vfh
;
1270 v4l2_fh_del(&handle
->vfh
);
1277 static int isp_video_release(struct file
*file
)
1279 struct isp_video
*video
= video_drvdata(file
);
1280 struct v4l2_fh
*vfh
= file
->private_data
;
1281 struct isp_video_fh
*handle
= to_isp_video_fh(vfh
);
1283 /* Disable streaming and free the buffers queue resources. */
1284 isp_video_streamoff(file
, vfh
, video
->type
);
1286 mutex_lock(&handle
->queue
.lock
);
1287 omap3isp_video_queue_cleanup(&handle
->queue
);
1288 mutex_unlock(&handle
->queue
.lock
);
1290 omap3isp_pipeline_pm_use(&video
->video
.entity
, 0);
1292 /* Release the file handle. */
1295 file
->private_data
= NULL
;
1297 omap3isp_put(video
->isp
);
1302 static unsigned int isp_video_poll(struct file
*file
, poll_table
*wait
)
1304 struct isp_video_fh
*vfh
= to_isp_video_fh(file
->private_data
);
1305 struct isp_video_queue
*queue
= &vfh
->queue
;
1307 return omap3isp_video_queue_poll(queue
, file
, wait
);
1310 static int isp_video_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1312 struct isp_video_fh
*vfh
= to_isp_video_fh(file
->private_data
);
1314 return omap3isp_video_queue_mmap(&vfh
->queue
, vma
);
1317 static struct v4l2_file_operations isp_video_fops
= {
1318 .owner
= THIS_MODULE
,
1319 .unlocked_ioctl
= video_ioctl2
,
1320 .open
= isp_video_open
,
1321 .release
= isp_video_release
,
1322 .poll
= isp_video_poll
,
1323 .mmap
= isp_video_mmap
,
1326 /* -----------------------------------------------------------------------------
1330 static const struct isp_video_operations isp_video_dummy_ops
= {
1333 int omap3isp_video_init(struct isp_video
*video
, const char *name
)
1335 const char *direction
;
1338 switch (video
->type
) {
1339 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1340 direction
= "output";
1341 video
->pad
.flags
= MEDIA_PAD_FL_SINK
;
1343 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1344 direction
= "input";
1345 video
->pad
.flags
= MEDIA_PAD_FL_SOURCE
;
1346 video
->video
.vfl_dir
= VFL_DIR_TX
;
1353 ret
= media_entity_init(&video
->video
.entity
, 1, &video
->pad
, 0);
1357 mutex_init(&video
->mutex
);
1358 atomic_set(&video
->active
, 0);
1360 spin_lock_init(&video
->pipe
.lock
);
1361 mutex_init(&video
->stream_lock
);
1363 /* Initialize the video device. */
1364 if (video
->ops
== NULL
)
1365 video
->ops
= &isp_video_dummy_ops
;
1367 video
->video
.fops
= &isp_video_fops
;
1368 snprintf(video
->video
.name
, sizeof(video
->video
.name
),
1369 "OMAP3 ISP %s %s", name
, direction
);
1370 video
->video
.vfl_type
= VFL_TYPE_GRABBER
;
1371 video
->video
.release
= video_device_release_empty
;
1372 video
->video
.ioctl_ops
= &isp_video_ioctl_ops
;
1373 video
->pipe
.stream_state
= ISP_PIPELINE_STREAM_STOPPED
;
1375 video_set_drvdata(&video
->video
, video
);
1380 void omap3isp_video_cleanup(struct isp_video
*video
)
1382 media_entity_cleanup(&video
->video
.entity
);
1383 mutex_destroy(&video
->stream_lock
);
1384 mutex_destroy(&video
->mutex
);
1387 int omap3isp_video_register(struct isp_video
*video
, struct v4l2_device
*vdev
)
1391 video
->video
.v4l2_dev
= vdev
;
1393 ret
= video_register_device(&video
->video
, VFL_TYPE_GRABBER
, -1);
1395 dev_err(video
->isp
->dev
,
1396 "%s: could not register video device (%d)\n",
1402 void omap3isp_video_unregister(struct isp_video
*video
)
1404 if (video_is_registered(&video
->video
))
1405 video_unregister_device(&video
->video
);