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/omap-pm.h>
45 /* -----------------------------------------------------------------------------
50 * NOTE: When adding new media bus codes, always remember to add
51 * corresponding in-memory formats to the table below!!!
53 static struct isp_format_info formats
[] = {
54 { V4L2_MBUS_FMT_Y8_1X8
, V4L2_MBUS_FMT_Y8_1X8
,
55 V4L2_MBUS_FMT_Y8_1X8
, V4L2_MBUS_FMT_Y8_1X8
,
56 V4L2_PIX_FMT_GREY
, 8, 1, },
57 { V4L2_MBUS_FMT_Y10_1X10
, V4L2_MBUS_FMT_Y10_1X10
,
58 V4L2_MBUS_FMT_Y10_1X10
, V4L2_MBUS_FMT_Y8_1X8
,
59 V4L2_PIX_FMT_Y10
, 10, 2, },
60 { V4L2_MBUS_FMT_Y12_1X12
, V4L2_MBUS_FMT_Y10_1X10
,
61 V4L2_MBUS_FMT_Y12_1X12
, V4L2_MBUS_FMT_Y8_1X8
,
62 V4L2_PIX_FMT_Y12
, 12, 2, },
63 { V4L2_MBUS_FMT_SBGGR8_1X8
, V4L2_MBUS_FMT_SBGGR8_1X8
,
64 V4L2_MBUS_FMT_SBGGR8_1X8
, V4L2_MBUS_FMT_SBGGR8_1X8
,
65 V4L2_PIX_FMT_SBGGR8
, 8, 1, },
66 { V4L2_MBUS_FMT_SGBRG8_1X8
, V4L2_MBUS_FMT_SGBRG8_1X8
,
67 V4L2_MBUS_FMT_SGBRG8_1X8
, V4L2_MBUS_FMT_SGBRG8_1X8
,
68 V4L2_PIX_FMT_SGBRG8
, 8, 1, },
69 { V4L2_MBUS_FMT_SGRBG8_1X8
, V4L2_MBUS_FMT_SGRBG8_1X8
,
70 V4L2_MBUS_FMT_SGRBG8_1X8
, V4L2_MBUS_FMT_SGRBG8_1X8
,
71 V4L2_PIX_FMT_SGRBG8
, 8, 1, },
72 { V4L2_MBUS_FMT_SRGGB8_1X8
, V4L2_MBUS_FMT_SRGGB8_1X8
,
73 V4L2_MBUS_FMT_SRGGB8_1X8
, V4L2_MBUS_FMT_SRGGB8_1X8
,
74 V4L2_PIX_FMT_SRGGB8
, 8, 1, },
75 { V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8
, V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8
,
76 V4L2_MBUS_FMT_SBGGR10_1X10
, 0,
77 V4L2_PIX_FMT_SBGGR10DPCM8
, 8, 1, },
78 { V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8
, V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8
,
79 V4L2_MBUS_FMT_SGBRG10_1X10
, 0,
80 V4L2_PIX_FMT_SGBRG10DPCM8
, 8, 1, },
81 { V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8
, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8
,
82 V4L2_MBUS_FMT_SGRBG10_1X10
, 0,
83 V4L2_PIX_FMT_SGRBG10DPCM8
, 8, 1, },
84 { V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8
, V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8
,
85 V4L2_MBUS_FMT_SRGGB10_1X10
, 0,
86 V4L2_PIX_FMT_SRGGB10DPCM8
, 8, 1, },
87 { V4L2_MBUS_FMT_SBGGR10_1X10
, V4L2_MBUS_FMT_SBGGR10_1X10
,
88 V4L2_MBUS_FMT_SBGGR10_1X10
, V4L2_MBUS_FMT_SBGGR8_1X8
,
89 V4L2_PIX_FMT_SBGGR10
, 10, 2, },
90 { V4L2_MBUS_FMT_SGBRG10_1X10
, V4L2_MBUS_FMT_SGBRG10_1X10
,
91 V4L2_MBUS_FMT_SGBRG10_1X10
, V4L2_MBUS_FMT_SGBRG8_1X8
,
92 V4L2_PIX_FMT_SGBRG10
, 10, 2, },
93 { V4L2_MBUS_FMT_SGRBG10_1X10
, V4L2_MBUS_FMT_SGRBG10_1X10
,
94 V4L2_MBUS_FMT_SGRBG10_1X10
, V4L2_MBUS_FMT_SGRBG8_1X8
,
95 V4L2_PIX_FMT_SGRBG10
, 10, 2, },
96 { V4L2_MBUS_FMT_SRGGB10_1X10
, V4L2_MBUS_FMT_SRGGB10_1X10
,
97 V4L2_MBUS_FMT_SRGGB10_1X10
, V4L2_MBUS_FMT_SRGGB8_1X8
,
98 V4L2_PIX_FMT_SRGGB10
, 10, 2, },
99 { V4L2_MBUS_FMT_SBGGR12_1X12
, V4L2_MBUS_FMT_SBGGR10_1X10
,
100 V4L2_MBUS_FMT_SBGGR12_1X12
, V4L2_MBUS_FMT_SBGGR8_1X8
,
101 V4L2_PIX_FMT_SBGGR12
, 12, 2, },
102 { V4L2_MBUS_FMT_SGBRG12_1X12
, V4L2_MBUS_FMT_SGBRG10_1X10
,
103 V4L2_MBUS_FMT_SGBRG12_1X12
, V4L2_MBUS_FMT_SGBRG8_1X8
,
104 V4L2_PIX_FMT_SGBRG12
, 12, 2, },
105 { V4L2_MBUS_FMT_SGRBG12_1X12
, V4L2_MBUS_FMT_SGRBG10_1X10
,
106 V4L2_MBUS_FMT_SGRBG12_1X12
, V4L2_MBUS_FMT_SGRBG8_1X8
,
107 V4L2_PIX_FMT_SGRBG12
, 12, 2, },
108 { V4L2_MBUS_FMT_SRGGB12_1X12
, V4L2_MBUS_FMT_SRGGB10_1X10
,
109 V4L2_MBUS_FMT_SRGGB12_1X12
, V4L2_MBUS_FMT_SRGGB8_1X8
,
110 V4L2_PIX_FMT_SRGGB12
, 12, 2, },
111 { V4L2_MBUS_FMT_UYVY8_1X16
, V4L2_MBUS_FMT_UYVY8_1X16
,
112 V4L2_MBUS_FMT_UYVY8_1X16
, 0,
113 V4L2_PIX_FMT_UYVY
, 16, 2, },
114 { V4L2_MBUS_FMT_YUYV8_1X16
, V4L2_MBUS_FMT_YUYV8_1X16
,
115 V4L2_MBUS_FMT_YUYV8_1X16
, 0,
116 V4L2_PIX_FMT_YUYV
, 16, 2, },
117 { V4L2_MBUS_FMT_UYVY8_2X8
, V4L2_MBUS_FMT_UYVY8_2X8
,
118 V4L2_MBUS_FMT_UYVY8_2X8
, 0,
119 V4L2_PIX_FMT_UYVY
, 8, 2, },
120 { V4L2_MBUS_FMT_YUYV8_2X8
, V4L2_MBUS_FMT_YUYV8_2X8
,
121 V4L2_MBUS_FMT_YUYV8_2X8
, 0,
122 V4L2_PIX_FMT_YUYV
, 8, 2, },
123 /* Empty entry to catch the unsupported pixel code (0) used by the CCDC
124 * module and avoid NULL pointer dereferences.
129 const struct isp_format_info
*
130 omap3isp_video_format_info(enum v4l2_mbus_pixelcode code
)
134 for (i
= 0; i
< ARRAY_SIZE(formats
); ++i
) {
135 if (formats
[i
].code
== code
)
143 * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format
144 * @video: ISP video instance
145 * @mbus: v4l2_mbus_framefmt format (input)
146 * @pix: v4l2_pix_format format (output)
148 * Fill the output pix structure with information from the input mbus format.
149 * The bytesperline and sizeimage fields are computed from the requested bytes
150 * per line value in the pix format and information from the video instance.
152 * Return the number of padding bytes at end of line.
154 static unsigned int isp_video_mbus_to_pix(const struct isp_video
*video
,
155 const struct v4l2_mbus_framefmt
*mbus
,
156 struct v4l2_pix_format
*pix
)
158 unsigned int bpl
= pix
->bytesperline
;
159 unsigned int min_bpl
;
162 memset(pix
, 0, sizeof(*pix
));
163 pix
->width
= mbus
->width
;
164 pix
->height
= mbus
->height
;
166 for (i
= 0; i
< ARRAY_SIZE(formats
); ++i
) {
167 if (formats
[i
].code
== mbus
->code
)
171 if (WARN_ON(i
== ARRAY_SIZE(formats
)))
174 min_bpl
= pix
->width
* formats
[i
].bpp
;
176 /* Clamp the requested bytes per line value. If the maximum bytes per
177 * line value is zero, the module doesn't support user configurable line
178 * sizes. Override the requested value with the minimum in that case.
181 bpl
= clamp(bpl
, min_bpl
, video
->bpl_max
);
185 if (!video
->bpl_zero_padding
|| bpl
!= min_bpl
)
186 bpl
= ALIGN(bpl
, video
->bpl_alignment
);
188 pix
->pixelformat
= formats
[i
].pixelformat
;
189 pix
->bytesperline
= bpl
;
190 pix
->sizeimage
= pix
->bytesperline
* pix
->height
;
191 pix
->colorspace
= mbus
->colorspace
;
192 pix
->field
= mbus
->field
;
194 return bpl
- min_bpl
;
197 static void isp_video_pix_to_mbus(const struct v4l2_pix_format
*pix
,
198 struct v4l2_mbus_framefmt
*mbus
)
202 memset(mbus
, 0, sizeof(*mbus
));
203 mbus
->width
= pix
->width
;
204 mbus
->height
= pix
->height
;
206 /* Skip the last format in the loop so that it will be selected if no
209 for (i
= 0; i
< ARRAY_SIZE(formats
) - 1; ++i
) {
210 if (formats
[i
].pixelformat
== pix
->pixelformat
)
214 mbus
->code
= formats
[i
].code
;
215 mbus
->colorspace
= pix
->colorspace
;
216 mbus
->field
= pix
->field
;
219 static struct v4l2_subdev
*
220 isp_video_remote_subdev(struct isp_video
*video
, u32
*pad
)
222 struct media_pad
*remote
;
224 remote
= media_entity_remote_source(&video
->pad
);
226 if (remote
== NULL
||
227 media_entity_type(remote
->entity
) != MEDIA_ENT_T_V4L2_SUBDEV
)
231 *pad
= remote
->index
;
233 return media_entity_to_v4l2_subdev(remote
->entity
);
236 /* Return a pointer to the ISP video instance at the far end of the pipeline. */
237 static int isp_video_get_graph_data(struct isp_video
*video
,
238 struct isp_pipeline
*pipe
)
240 struct media_entity_graph graph
;
241 struct media_entity
*entity
= &video
->video
.entity
;
242 struct media_device
*mdev
= entity
->parent
;
243 struct isp_video
*far_end
= NULL
;
245 mutex_lock(&mdev
->graph_mutex
);
246 media_entity_graph_walk_start(&graph
, entity
);
248 while ((entity
= media_entity_graph_walk_next(&graph
))) {
249 struct isp_video
*__video
;
251 pipe
->entities
|= 1 << entity
->id
;
256 if (entity
== &video
->video
.entity
)
259 if (media_entity_type(entity
) != MEDIA_ENT_T_DEVNODE
)
262 __video
= to_isp_video(media_entity_to_video_device(entity
));
263 if (__video
->type
!= video
->type
)
267 mutex_unlock(&mdev
->graph_mutex
);
269 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
270 pipe
->input
= far_end
;
271 pipe
->output
= video
;
277 pipe
->output
= far_end
;
284 * Validate a pipeline by checking both ends of all links for format
287 * Compute the minimum time per frame value as the maximum of time per frame
288 * limits reported by every block in the pipeline.
290 * Return 0 if all formats match, or -EPIPE if at least one link is found with
291 * different formats on its two ends or if the pipeline doesn't start with a
292 * video source (either a subdev with no input pad, or a non-subdev entity).
294 static int isp_video_validate_pipeline(struct isp_pipeline
*pipe
)
296 struct isp_device
*isp
= pipe
->output
->isp
;
297 struct media_pad
*pad
;
298 struct v4l2_subdev
*subdev
;
300 subdev
= isp_video_remote_subdev(pipe
->output
, NULL
);
305 /* Retrieve the sink format */
306 pad
= &subdev
->entity
.pads
[0];
307 if (!(pad
->flags
& MEDIA_PAD_FL_SINK
))
310 /* Update the maximum frame rate */
311 if (subdev
== &isp
->isp_res
.subdev
)
312 omap3isp_resizer_max_rate(&isp
->isp_res
,
315 /* Retrieve the source format. Return an error if no source
316 * entity can be found, and stop checking the pipeline if the
317 * source entity isn't a subdev.
319 pad
= media_entity_remote_source(pad
);
323 if (media_entity_type(pad
->entity
) != MEDIA_ENT_T_V4L2_SUBDEV
)
326 subdev
= media_entity_to_v4l2_subdev(pad
->entity
);
333 __isp_video_get_format(struct isp_video
*video
, struct v4l2_format
*format
)
335 struct v4l2_subdev_format fmt
;
336 struct v4l2_subdev
*subdev
;
340 subdev
= isp_video_remote_subdev(video
, &pad
);
344 mutex_lock(&video
->mutex
);
347 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
348 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &fmt
);
349 if (ret
== -ENOIOCTLCMD
)
352 mutex_unlock(&video
->mutex
);
357 format
->type
= video
->type
;
358 return isp_video_mbus_to_pix(video
, &fmt
.format
, &format
->fmt
.pix
);
362 isp_video_check_format(struct isp_video
*video
, struct isp_video_fh
*vfh
)
364 struct v4l2_format format
;
367 memcpy(&format
, &vfh
->format
, sizeof(format
));
368 ret
= __isp_video_get_format(video
, &format
);
372 if (vfh
->format
.fmt
.pix
.pixelformat
!= format
.fmt
.pix
.pixelformat
||
373 vfh
->format
.fmt
.pix
.height
!= format
.fmt
.pix
.height
||
374 vfh
->format
.fmt
.pix
.width
!= format
.fmt
.pix
.width
||
375 vfh
->format
.fmt
.pix
.bytesperline
!= format
.fmt
.pix
.bytesperline
||
376 vfh
->format
.fmt
.pix
.sizeimage
!= format
.fmt
.pix
.sizeimage
)
382 /* -----------------------------------------------------------------------------
386 #define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8)
389 * ispmmu_vmap - Wrapper for Virtual memory mapping of a scatter gather list
390 * @dev: Device pointer specific to the OMAP3 ISP.
391 * @sglist: Pointer to source Scatter gather list to allocate.
392 * @sglen: Number of elements of the scatter-gatter list.
394 * Returns a resulting mapped device address by the ISP MMU, or -ENOMEM if
395 * we ran out of memory.
398 ispmmu_vmap(struct isp_device
*isp
, const struct scatterlist
*sglist
, int sglen
)
400 struct sg_table
*sgt
;
403 sgt
= kmalloc(sizeof(*sgt
), GFP_KERNEL
);
407 sgt
->sgl
= (struct scatterlist
*)sglist
;
409 sgt
->orig_nents
= sglen
;
411 da
= omap_iommu_vmap(isp
->domain
, isp
->dev
, 0, sgt
, IOMMU_FLAG
);
412 if (IS_ERR_VALUE(da
))
419 * ispmmu_vunmap - Unmap a device address from the ISP MMU
420 * @dev: Device pointer specific to the OMAP3 ISP.
421 * @da: Device address generated from a ispmmu_vmap call.
423 static void ispmmu_vunmap(struct isp_device
*isp
, dma_addr_t da
)
425 struct sg_table
*sgt
;
427 sgt
= omap_iommu_vunmap(isp
->domain
, isp
->dev
, (u32
)da
);
431 /* -----------------------------------------------------------------------------
432 * Video queue operations
435 static void isp_video_queue_prepare(struct isp_video_queue
*queue
,
436 unsigned int *nbuffers
, unsigned int *size
)
438 struct isp_video_fh
*vfh
=
439 container_of(queue
, struct isp_video_fh
, queue
);
440 struct isp_video
*video
= vfh
->video
;
442 *size
= vfh
->format
.fmt
.pix
.sizeimage
;
446 *nbuffers
= min(*nbuffers
, video
->capture_mem
/ PAGE_ALIGN(*size
));
449 static void isp_video_buffer_cleanup(struct isp_video_buffer
*buf
)
451 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
452 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
453 struct isp_video
*video
= vfh
->video
;
455 if (buffer
->isp_addr
) {
456 ispmmu_vunmap(video
->isp
, buffer
->isp_addr
);
457 buffer
->isp_addr
= 0;
461 static int isp_video_buffer_prepare(struct isp_video_buffer
*buf
)
463 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
464 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
465 struct isp_video
*video
= vfh
->video
;
468 addr
= ispmmu_vmap(video
->isp
, buf
->sglist
, buf
->sglen
);
469 if (IS_ERR_VALUE(addr
))
472 if (!IS_ALIGNED(addr
, 32)) {
473 dev_dbg(video
->isp
->dev
, "Buffer address must be "
474 "aligned to 32 bytes boundary.\n");
475 ispmmu_vunmap(video
->isp
, buffer
->isp_addr
);
479 buf
->vbuf
.bytesused
= vfh
->format
.fmt
.pix
.sizeimage
;
480 buffer
->isp_addr
= addr
;
485 * isp_video_buffer_queue - Add buffer to streaming queue
488 * In memory-to-memory mode, start streaming on the pipeline if buffers are
489 * queued on both the input and the output, if the pipeline isn't already busy.
490 * If the pipeline is busy, it will be restarted in the output module interrupt
493 static void isp_video_buffer_queue(struct isp_video_buffer
*buf
)
495 struct isp_video_fh
*vfh
= isp_video_queue_to_isp_video_fh(buf
->queue
);
496 struct isp_buffer
*buffer
= to_isp_buffer(buf
);
497 struct isp_video
*video
= vfh
->video
;
498 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
499 enum isp_pipeline_state state
;
504 empty
= list_empty(&video
->dmaqueue
);
505 list_add_tail(&buffer
->buffer
.irqlist
, &video
->dmaqueue
);
508 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
509 state
= ISP_PIPELINE_QUEUE_OUTPUT
;
511 state
= ISP_PIPELINE_QUEUE_INPUT
;
513 spin_lock_irqsave(&pipe
->lock
, flags
);
514 pipe
->state
|= state
;
515 video
->ops
->queue(video
, buffer
);
516 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_QUEUED
;
518 start
= isp_pipeline_ready(pipe
);
520 pipe
->state
|= ISP_PIPELINE_STREAM
;
521 spin_unlock_irqrestore(&pipe
->lock
, flags
);
524 omap3isp_pipeline_set_stream(pipe
,
525 ISP_PIPELINE_STREAM_SINGLESHOT
);
529 static const struct isp_video_queue_operations isp_video_queue_ops
= {
530 .queue_prepare
= &isp_video_queue_prepare
,
531 .buffer_prepare
= &isp_video_buffer_prepare
,
532 .buffer_queue
= &isp_video_buffer_queue
,
533 .buffer_cleanup
= &isp_video_buffer_cleanup
,
537 * omap3isp_video_buffer_next - Complete the current buffer and return the next
538 * @video: ISP video object
540 * Remove the current video buffer from the DMA queue and fill its timestamp,
541 * field count and state fields before waking up its completion handler.
543 * For capture video nodes the buffer state is set to ISP_BUF_STATE_DONE if no
544 * error has been flagged in the pipeline, or to ISP_BUF_STATE_ERROR otherwise.
545 * For video output nodes the buffer state is always set to ISP_BUF_STATE_DONE.
547 * The DMA queue is expected to contain at least one buffer.
549 * Return a pointer to the next buffer in the DMA queue, or NULL if the queue is
552 struct isp_buffer
*omap3isp_video_buffer_next(struct isp_video
*video
)
554 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
555 struct isp_video_queue
*queue
= video
->queue
;
556 enum isp_pipeline_state state
;
557 struct isp_video_buffer
*buf
;
561 spin_lock_irqsave(&queue
->irqlock
, flags
);
562 if (WARN_ON(list_empty(&video
->dmaqueue
))) {
563 spin_unlock_irqrestore(&queue
->irqlock
, flags
);
567 buf
= list_first_entry(&video
->dmaqueue
, struct isp_video_buffer
,
569 list_del(&buf
->irqlist
);
570 spin_unlock_irqrestore(&queue
->irqlock
, flags
);
573 buf
->vbuf
.timestamp
.tv_sec
= ts
.tv_sec
;
574 buf
->vbuf
.timestamp
.tv_usec
= ts
.tv_nsec
/ NSEC_PER_USEC
;
576 /* Do frame number propagation only if this is the output video node.
577 * Frame number either comes from the CSI receivers or it gets
578 * incremented here if H3A is not active.
579 * Note: There is no guarantee that the output buffer will finish
580 * first, so the input number might lag behind by 1 in some cases.
582 if (video
== pipe
->output
&& !pipe
->do_propagation
)
583 buf
->vbuf
.sequence
= atomic_inc_return(&pipe
->frame_number
);
585 buf
->vbuf
.sequence
= atomic_read(&pipe
->frame_number
);
587 /* Report pipeline errors to userspace on the capture device side. */
588 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& pipe
->error
) {
589 buf
->state
= ISP_BUF_STATE_ERROR
;
592 buf
->state
= ISP_BUF_STATE_DONE
;
597 if (list_empty(&video
->dmaqueue
)) {
598 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
599 state
= ISP_PIPELINE_QUEUE_OUTPUT
600 | ISP_PIPELINE_STREAM
;
602 state
= ISP_PIPELINE_QUEUE_INPUT
603 | ISP_PIPELINE_STREAM
;
605 spin_lock_irqsave(&pipe
->lock
, flags
);
606 pipe
->state
&= ~state
;
607 if (video
->pipe
.stream_state
== ISP_PIPELINE_STREAM_CONTINUOUS
)
608 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
609 spin_unlock_irqrestore(&pipe
->lock
, flags
);
613 if (queue
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& pipe
->input
!= NULL
) {
614 spin_lock_irqsave(&pipe
->lock
, flags
);
615 pipe
->state
&= ~ISP_PIPELINE_STREAM
;
616 spin_unlock_irqrestore(&pipe
->lock
, flags
);
619 buf
= list_first_entry(&video
->dmaqueue
, struct isp_video_buffer
,
621 buf
->state
= ISP_BUF_STATE_ACTIVE
;
622 return to_isp_buffer(buf
);
626 * omap3isp_video_resume - Perform resume operation on the buffers
627 * @video: ISP video object
628 * @continuous: Pipeline is in single shot mode if 0 or continuous mode otherwise
630 * This function is intended to be used on suspend/resume scenario. It
631 * requests video queue layer to discard buffers marked as DONE if it's in
632 * continuous mode and requests ISP modules to queue again the ACTIVE buffer
635 void omap3isp_video_resume(struct isp_video
*video
, int continuous
)
637 struct isp_buffer
*buf
= NULL
;
639 if (continuous
&& video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
640 omap3isp_video_queue_discard_done(video
->queue
);
642 if (!list_empty(&video
->dmaqueue
)) {
643 buf
= list_first_entry(&video
->dmaqueue
,
644 struct isp_buffer
, buffer
.irqlist
);
645 video
->ops
->queue(video
, buf
);
646 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_QUEUED
;
649 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
653 /* -----------------------------------------------------------------------------
658 isp_video_querycap(struct file
*file
, void *fh
, struct v4l2_capability
*cap
)
660 struct isp_video
*video
= video_drvdata(file
);
662 strlcpy(cap
->driver
, ISP_VIDEO_DRIVER_NAME
, sizeof(cap
->driver
));
663 strlcpy(cap
->card
, video
->video
.name
, sizeof(cap
->card
));
664 strlcpy(cap
->bus_info
, "media", sizeof(cap
->bus_info
));
666 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
667 cap
->capabilities
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
669 cap
->capabilities
= V4L2_CAP_VIDEO_OUTPUT
| V4L2_CAP_STREAMING
;
675 isp_video_get_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
677 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
678 struct isp_video
*video
= video_drvdata(file
);
680 if (format
->type
!= video
->type
)
683 mutex_lock(&video
->mutex
);
684 *format
= vfh
->format
;
685 mutex_unlock(&video
->mutex
);
691 isp_video_set_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
693 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
694 struct isp_video
*video
= video_drvdata(file
);
695 struct v4l2_mbus_framefmt fmt
;
697 if (format
->type
!= video
->type
)
700 mutex_lock(&video
->mutex
);
702 /* Fill the bytesperline and sizeimage fields by converting to media bus
703 * format and back to pixel format.
705 isp_video_pix_to_mbus(&format
->fmt
.pix
, &fmt
);
706 isp_video_mbus_to_pix(video
, &fmt
, &format
->fmt
.pix
);
708 vfh
->format
= *format
;
710 mutex_unlock(&video
->mutex
);
715 isp_video_try_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
717 struct isp_video
*video
= video_drvdata(file
);
718 struct v4l2_subdev_format fmt
;
719 struct v4l2_subdev
*subdev
;
723 if (format
->type
!= video
->type
)
726 subdev
= isp_video_remote_subdev(video
, &pad
);
730 isp_video_pix_to_mbus(&format
->fmt
.pix
, &fmt
.format
);
733 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
734 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &fmt
);
736 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
738 isp_video_mbus_to_pix(video
, &fmt
.format
, &format
->fmt
.pix
);
743 isp_video_cropcap(struct file
*file
, void *fh
, struct v4l2_cropcap
*cropcap
)
745 struct isp_video
*video
= video_drvdata(file
);
746 struct v4l2_subdev
*subdev
;
749 subdev
= isp_video_remote_subdev(video
, NULL
);
753 mutex_lock(&video
->mutex
);
754 ret
= v4l2_subdev_call(subdev
, video
, cropcap
, cropcap
);
755 mutex_unlock(&video
->mutex
);
757 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
761 isp_video_get_crop(struct file
*file
, void *fh
, struct v4l2_crop
*crop
)
763 struct isp_video
*video
= video_drvdata(file
);
764 struct v4l2_subdev_format format
;
765 struct v4l2_subdev
*subdev
;
769 subdev
= isp_video_remote_subdev(video
, &pad
);
773 /* Try the get crop operation first and fallback to get format if not
776 ret
= v4l2_subdev_call(subdev
, video
, g_crop
, crop
);
777 if (ret
!= -ENOIOCTLCMD
)
781 format
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
782 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &format
);
784 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
788 crop
->c
.width
= format
.format
.width
;
789 crop
->c
.height
= format
.format
.height
;
795 isp_video_set_crop(struct file
*file
, void *fh
, struct v4l2_crop
*crop
)
797 struct isp_video
*video
= video_drvdata(file
);
798 struct v4l2_subdev
*subdev
;
801 subdev
= isp_video_remote_subdev(video
, NULL
);
805 mutex_lock(&video
->mutex
);
806 ret
= v4l2_subdev_call(subdev
, video
, s_crop
, crop
);
807 mutex_unlock(&video
->mutex
);
809 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
813 isp_video_get_param(struct file
*file
, void *fh
, struct v4l2_streamparm
*a
)
815 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
816 struct isp_video
*video
= video_drvdata(file
);
818 if (video
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
||
819 video
->type
!= a
->type
)
822 memset(a
, 0, sizeof(*a
));
823 a
->type
= V4L2_BUF_TYPE_VIDEO_OUTPUT
;
824 a
->parm
.output
.capability
= V4L2_CAP_TIMEPERFRAME
;
825 a
->parm
.output
.timeperframe
= vfh
->timeperframe
;
831 isp_video_set_param(struct file
*file
, void *fh
, struct v4l2_streamparm
*a
)
833 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
834 struct isp_video
*video
= video_drvdata(file
);
836 if (video
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
||
837 video
->type
!= a
->type
)
840 if (a
->parm
.output
.timeperframe
.denominator
== 0)
841 a
->parm
.output
.timeperframe
.denominator
= 1;
843 vfh
->timeperframe
= a
->parm
.output
.timeperframe
;
849 isp_video_reqbufs(struct file
*file
, void *fh
, struct v4l2_requestbuffers
*rb
)
851 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
853 return omap3isp_video_queue_reqbufs(&vfh
->queue
, rb
);
857 isp_video_querybuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
859 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
861 return omap3isp_video_queue_querybuf(&vfh
->queue
, b
);
865 isp_video_qbuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
867 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
869 return omap3isp_video_queue_qbuf(&vfh
->queue
, b
);
873 isp_video_dqbuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
875 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
877 return omap3isp_video_queue_dqbuf(&vfh
->queue
, b
,
878 file
->f_flags
& O_NONBLOCK
);
881 static int isp_video_check_external_subdevs(struct isp_video
*video
,
882 struct isp_pipeline
*pipe
)
884 struct isp_device
*isp
= video
->isp
;
885 struct media_entity
*ents
[] = {
886 &isp
->isp_csi2a
.subdev
.entity
,
887 &isp
->isp_csi2c
.subdev
.entity
,
888 &isp
->isp_ccp2
.subdev
.entity
,
889 &isp
->isp_ccdc
.subdev
.entity
891 struct media_pad
*source_pad
;
892 struct media_entity
*source
= NULL
;
893 struct media_entity
*sink
;
894 struct v4l2_subdev_format fmt
;
895 struct v4l2_ext_controls ctrls
;
896 struct v4l2_ext_control ctrl
;
900 for (i
= 0; i
< ARRAY_SIZE(ents
); i
++) {
901 /* Is the entity part of the pipeline? */
902 if (!(pipe
->entities
& (1 << ents
[i
]->id
)))
905 /* ISP entities have always sink pad == 0. Find source. */
906 source_pad
= media_entity_remote_source(&ents
[i
]->pads
[0]);
907 if (source_pad
== NULL
)
910 source
= source_pad
->entity
;
916 dev_warn(isp
->dev
, "can't find source, failing now\n");
920 if (media_entity_type(source
) != MEDIA_ENT_T_V4L2_SUBDEV
)
923 pipe
->external
= media_entity_to_v4l2_subdev(source
);
925 fmt
.pad
= source_pad
->index
;
926 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
927 ret
= v4l2_subdev_call(media_entity_to_v4l2_subdev(sink
),
928 pad
, get_fmt
, NULL
, &fmt
);
929 if (unlikely(ret
< 0)) {
930 dev_warn(isp
->dev
, "get_fmt returned null!\n");
934 pipe
->external_width
=
935 omap3isp_video_format_info(fmt
.format
.code
)->width
;
937 memset(&ctrls
, 0, sizeof(ctrls
));
938 memset(&ctrl
, 0, sizeof(ctrl
));
940 ctrl
.id
= V4L2_CID_PIXEL_RATE
;
943 ctrls
.controls
= &ctrl
;
945 ret
= v4l2_g_ext_ctrls(pipe
->external
->ctrl_handler
, &ctrls
);
947 dev_warn(isp
->dev
, "no pixel rate control in subdev %s\n",
948 pipe
->external
->name
);
952 pipe
->external_rate
= ctrl
.value64
;
954 if (pipe
->entities
& (1 << isp
->isp_ccdc
.subdev
.entity
.id
)) {
955 unsigned int rate
= UINT_MAX
;
957 * Check that maximum allowed CCDC pixel rate isn't
958 * exceeded by the pixel rate.
960 omap3isp_ccdc_max_rate(&isp
->isp_ccdc
, &rate
);
961 if (pipe
->external_rate
> rate
)
971 * Every ISP pipeline has a single input and a single output. The input can be
972 * either a sensor or a video node. The output is always a video node.
974 * As every pipeline has an output video node, the ISP video objects at the
975 * pipeline output stores the pipeline state. It tracks the streaming state of
976 * both the input and output, as well as the availability of buffers.
978 * In sensor-to-memory mode, frames are always available at the pipeline input.
979 * Starting the sensor usually requires I2C transfers and must be done in
980 * interruptible context. The pipeline is started and stopped synchronously
981 * to the stream on/off commands. All modules in the pipeline will get their
982 * subdev set stream handler called. The module at the end of the pipeline must
983 * delay starting the hardware until buffers are available at its output.
985 * In memory-to-memory mode, starting/stopping the stream requires
986 * synchronization between the input and output. ISP modules can't be stopped
987 * in the middle of a frame, and at least some of the modules seem to become
988 * busy as soon as they're started, even if they don't receive a frame start
989 * event. For that reason frames need to be processed in single-shot mode. The
990 * driver needs to wait until a frame is completely processed and written to
991 * memory before restarting the pipeline for the next frame. Pipelined
992 * processing might be possible but requires more testing.
994 * Stream start must be delayed until buffers are available at both the input
995 * and output. The pipeline must be started in the videobuf queue callback with
996 * the buffers queue spinlock held. The modules subdev set stream operation must
1000 isp_video_streamon(struct file
*file
, void *fh
, enum v4l2_buf_type type
)
1002 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
1003 struct isp_video
*video
= video_drvdata(file
);
1004 enum isp_pipeline_state state
;
1005 struct isp_pipeline
*pipe
;
1006 unsigned long flags
;
1009 if (type
!= video
->type
)
1012 mutex_lock(&video
->stream_lock
);
1014 if (video
->streaming
) {
1015 mutex_unlock(&video
->stream_lock
);
1019 /* Start streaming on the pipeline. No link touching an entity in the
1020 * pipeline can be activated or deactivated once streaming is started.
1022 pipe
= video
->video
.entity
.pipe
1023 ? to_isp_pipeline(&video
->video
.entity
) : &video
->pipe
;
1027 if (video
->isp
->pdata
->set_constraints
)
1028 video
->isp
->pdata
->set_constraints(video
->isp
, true);
1029 pipe
->l3_ick
= clk_get_rate(video
->isp
->clock
[ISP_CLK_L3_ICK
]);
1030 pipe
->max_rate
= pipe
->l3_ick
;
1032 ret
= media_entity_pipeline_start(&video
->video
.entity
, &pipe
->pipe
);
1034 goto err_pipeline_start
;
1036 /* Verify that the currently configured format matches the output of
1037 * the connected subdev.
1039 ret
= isp_video_check_format(video
, vfh
);
1041 goto err_check_format
;
1043 video
->bpl_padding
= ret
;
1044 video
->bpl_value
= vfh
->format
.fmt
.pix
.bytesperline
;
1046 ret
= isp_video_get_graph_data(video
, pipe
);
1048 goto err_check_format
;
1050 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1051 state
= ISP_PIPELINE_STREAM_OUTPUT
| ISP_PIPELINE_IDLE_OUTPUT
;
1053 state
= ISP_PIPELINE_STREAM_INPUT
| ISP_PIPELINE_IDLE_INPUT
;
1055 ret
= isp_video_check_external_subdevs(video
, pipe
);
1057 goto err_check_format
;
1059 /* Validate the pipeline and update its state. */
1060 ret
= isp_video_validate_pipeline(pipe
);
1062 goto err_check_format
;
1064 pipe
->error
= false;
1066 spin_lock_irqsave(&pipe
->lock
, flags
);
1067 pipe
->state
&= ~ISP_PIPELINE_STREAM
;
1068 pipe
->state
|= state
;
1069 spin_unlock_irqrestore(&pipe
->lock
, flags
);
1071 /* Set the maximum time per frame as the value requested by userspace.
1072 * This is a soft limit that can be overridden if the hardware doesn't
1073 * support the request limit.
1075 if (video
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
)
1076 pipe
->max_timeperframe
= vfh
->timeperframe
;
1078 video
->queue
= &vfh
->queue
;
1079 INIT_LIST_HEAD(&video
->dmaqueue
);
1080 atomic_set(&pipe
->frame_number
, -1);
1082 ret
= omap3isp_video_queue_streamon(&vfh
->queue
);
1084 goto err_check_format
;
1086 /* In sensor-to-memory mode, the stream can be started synchronously
1087 * to the stream on command. In memory-to-memory mode, it will be
1088 * started when buffers are queued on both the input and output.
1090 if (pipe
->input
== NULL
) {
1091 ret
= omap3isp_pipeline_set_stream(pipe
,
1092 ISP_PIPELINE_STREAM_CONTINUOUS
);
1094 goto err_set_stream
;
1095 spin_lock_irqsave(&video
->queue
->irqlock
, flags
);
1096 if (list_empty(&video
->dmaqueue
))
1097 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
1098 spin_unlock_irqrestore(&video
->queue
->irqlock
, flags
);
1101 video
->streaming
= 1;
1103 mutex_unlock(&video
->stream_lock
);
1107 omap3isp_video_queue_streamoff(&vfh
->queue
);
1109 media_entity_pipeline_stop(&video
->video
.entity
);
1111 if (video
->isp
->pdata
->set_constraints
)
1112 video
->isp
->pdata
->set_constraints(video
->isp
, false);
1113 /* The DMA queue must be emptied here, otherwise CCDC interrupts that
1114 * will get triggered the next time the CCDC is powered up will try to
1115 * access buffers that might have been freed but still present in the
1116 * DMA queue. This can easily get triggered if the above
1117 * omap3isp_pipeline_set_stream() call fails on a system with a
1118 * free-running sensor.
1120 INIT_LIST_HEAD(&video
->dmaqueue
);
1121 video
->queue
= NULL
;
1123 mutex_unlock(&video
->stream_lock
);
1128 isp_video_streamoff(struct file
*file
, void *fh
, enum v4l2_buf_type type
)
1130 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
1131 struct isp_video
*video
= video_drvdata(file
);
1132 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
1133 enum isp_pipeline_state state
;
1134 unsigned int streaming
;
1135 unsigned long flags
;
1137 if (type
!= video
->type
)
1140 mutex_lock(&video
->stream_lock
);
1142 /* Make sure we're not streaming yet. */
1143 mutex_lock(&vfh
->queue
.lock
);
1144 streaming
= vfh
->queue
.streaming
;
1145 mutex_unlock(&vfh
->queue
.lock
);
1150 /* Update the pipeline state. */
1151 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1152 state
= ISP_PIPELINE_STREAM_OUTPUT
1153 | ISP_PIPELINE_QUEUE_OUTPUT
;
1155 state
= ISP_PIPELINE_STREAM_INPUT
1156 | ISP_PIPELINE_QUEUE_INPUT
;
1158 spin_lock_irqsave(&pipe
->lock
, flags
);
1159 pipe
->state
&= ~state
;
1160 spin_unlock_irqrestore(&pipe
->lock
, flags
);
1162 /* Stop the stream. */
1163 omap3isp_pipeline_set_stream(pipe
, ISP_PIPELINE_STREAM_STOPPED
);
1164 omap3isp_video_queue_streamoff(&vfh
->queue
);
1165 video
->queue
= NULL
;
1166 video
->streaming
= 0;
1168 if (video
->isp
->pdata
->set_constraints
)
1169 video
->isp
->pdata
->set_constraints(video
->isp
, false);
1170 media_entity_pipeline_stop(&video
->video
.entity
);
1173 mutex_unlock(&video
->stream_lock
);
1178 isp_video_enum_input(struct file
*file
, void *fh
, struct v4l2_input
*input
)
1180 if (input
->index
> 0)
1183 strlcpy(input
->name
, "camera", sizeof(input
->name
));
1184 input
->type
= V4L2_INPUT_TYPE_CAMERA
;
1190 isp_video_g_input(struct file
*file
, void *fh
, unsigned int *input
)
1198 isp_video_s_input(struct file
*file
, void *fh
, unsigned int input
)
1200 return input
== 0 ? 0 : -EINVAL
;
1203 static const struct v4l2_ioctl_ops isp_video_ioctl_ops
= {
1204 .vidioc_querycap
= isp_video_querycap
,
1205 .vidioc_g_fmt_vid_cap
= isp_video_get_format
,
1206 .vidioc_s_fmt_vid_cap
= isp_video_set_format
,
1207 .vidioc_try_fmt_vid_cap
= isp_video_try_format
,
1208 .vidioc_g_fmt_vid_out
= isp_video_get_format
,
1209 .vidioc_s_fmt_vid_out
= isp_video_set_format
,
1210 .vidioc_try_fmt_vid_out
= isp_video_try_format
,
1211 .vidioc_cropcap
= isp_video_cropcap
,
1212 .vidioc_g_crop
= isp_video_get_crop
,
1213 .vidioc_s_crop
= isp_video_set_crop
,
1214 .vidioc_g_parm
= isp_video_get_param
,
1215 .vidioc_s_parm
= isp_video_set_param
,
1216 .vidioc_reqbufs
= isp_video_reqbufs
,
1217 .vidioc_querybuf
= isp_video_querybuf
,
1218 .vidioc_qbuf
= isp_video_qbuf
,
1219 .vidioc_dqbuf
= isp_video_dqbuf
,
1220 .vidioc_streamon
= isp_video_streamon
,
1221 .vidioc_streamoff
= isp_video_streamoff
,
1222 .vidioc_enum_input
= isp_video_enum_input
,
1223 .vidioc_g_input
= isp_video_g_input
,
1224 .vidioc_s_input
= isp_video_s_input
,
1227 /* -----------------------------------------------------------------------------
1228 * V4L2 file operations
1231 static int isp_video_open(struct file
*file
)
1233 struct isp_video
*video
= video_drvdata(file
);
1234 struct isp_video_fh
*handle
;
1237 handle
= kzalloc(sizeof(*handle
), GFP_KERNEL
);
1241 v4l2_fh_init(&handle
->vfh
, &video
->video
);
1242 v4l2_fh_add(&handle
->vfh
);
1244 /* If this is the first user, initialise the pipeline. */
1245 if (omap3isp_get(video
->isp
) == NULL
) {
1250 ret
= omap3isp_pipeline_pm_use(&video
->video
.entity
, 1);
1252 omap3isp_put(video
->isp
);
1256 omap3isp_video_queue_init(&handle
->queue
, video
->type
,
1257 &isp_video_queue_ops
, video
->isp
->dev
,
1258 sizeof(struct isp_buffer
));
1260 memset(&handle
->format
, 0, sizeof(handle
->format
));
1261 handle
->format
.type
= video
->type
;
1262 handle
->timeperframe
.denominator
= 1;
1264 handle
->video
= video
;
1265 file
->private_data
= &handle
->vfh
;
1269 v4l2_fh_del(&handle
->vfh
);
1276 static int isp_video_release(struct file
*file
)
1278 struct isp_video
*video
= video_drvdata(file
);
1279 struct v4l2_fh
*vfh
= file
->private_data
;
1280 struct isp_video_fh
*handle
= to_isp_video_fh(vfh
);
1282 /* Disable streaming and free the buffers queue resources. */
1283 isp_video_streamoff(file
, vfh
, video
->type
);
1285 mutex_lock(&handle
->queue
.lock
);
1286 omap3isp_video_queue_cleanup(&handle
->queue
);
1287 mutex_unlock(&handle
->queue
.lock
);
1289 omap3isp_pipeline_pm_use(&video
->video
.entity
, 0);
1291 /* Release the file handle. */
1294 file
->private_data
= NULL
;
1296 omap3isp_put(video
->isp
);
1301 static unsigned int isp_video_poll(struct file
*file
, poll_table
*wait
)
1303 struct isp_video_fh
*vfh
= to_isp_video_fh(file
->private_data
);
1304 struct isp_video_queue
*queue
= &vfh
->queue
;
1306 return omap3isp_video_queue_poll(queue
, file
, wait
);
1309 static int isp_video_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1311 struct isp_video_fh
*vfh
= to_isp_video_fh(file
->private_data
);
1313 return omap3isp_video_queue_mmap(&vfh
->queue
, vma
);
1316 static struct v4l2_file_operations isp_video_fops
= {
1317 .owner
= THIS_MODULE
,
1318 .unlocked_ioctl
= video_ioctl2
,
1319 .open
= isp_video_open
,
1320 .release
= isp_video_release
,
1321 .poll
= isp_video_poll
,
1322 .mmap
= isp_video_mmap
,
1325 /* -----------------------------------------------------------------------------
1329 static const struct isp_video_operations isp_video_dummy_ops
= {
1332 int omap3isp_video_init(struct isp_video
*video
, const char *name
)
1334 const char *direction
;
1337 switch (video
->type
) {
1338 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1339 direction
= "output";
1340 video
->pad
.flags
= MEDIA_PAD_FL_SINK
;
1342 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1343 direction
= "input";
1344 video
->pad
.flags
= MEDIA_PAD_FL_SOURCE
;
1345 video
->video
.vfl_dir
= VFL_DIR_TX
;
1352 ret
= media_entity_init(&video
->video
.entity
, 1, &video
->pad
, 0);
1356 mutex_init(&video
->mutex
);
1357 atomic_set(&video
->active
, 0);
1359 spin_lock_init(&video
->pipe
.lock
);
1360 mutex_init(&video
->stream_lock
);
1362 /* Initialize the video device. */
1363 if (video
->ops
== NULL
)
1364 video
->ops
= &isp_video_dummy_ops
;
1366 video
->video
.fops
= &isp_video_fops
;
1367 snprintf(video
->video
.name
, sizeof(video
->video
.name
),
1368 "OMAP3 ISP %s %s", name
, direction
);
1369 video
->video
.vfl_type
= VFL_TYPE_GRABBER
;
1370 video
->video
.release
= video_device_release_empty
;
1371 video
->video
.ioctl_ops
= &isp_video_ioctl_ops
;
1372 video
->pipe
.stream_state
= ISP_PIPELINE_STREAM_STOPPED
;
1374 video_set_drvdata(&video
->video
, video
);
1379 void omap3isp_video_cleanup(struct isp_video
*video
)
1381 media_entity_cleanup(&video
->video
.entity
);
1382 mutex_destroy(&video
->stream_lock
);
1383 mutex_destroy(&video
->mutex
);
1386 int omap3isp_video_register(struct isp_video
*video
, struct v4l2_device
*vdev
)
1390 video
->video
.v4l2_dev
= vdev
;
1392 ret
= video_register_device(&video
->video
, VFL_TYPE_GRABBER
, -1);
1394 printk(KERN_ERR
"%s: could not register video device (%d)\n",
1400 void omap3isp_video_unregister(struct isp_video
*video
)
1402 if (video_is_registered(&video
->video
))
1403 video_unregister_device(&video
->video
);