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.
16 #include <asm/cacheflush.h>
17 #include <linux/clk.h>
19 #include <linux/module.h>
20 #include <linux/pagemap.h>
21 #include <linux/scatterlist.h>
22 #include <linux/sched.h>
23 #include <linux/slab.h>
24 #include <linux/vmalloc.h>
25 #include <media/v4l2-dev.h>
26 #include <media/v4l2-ioctl.h>
27 #include <media/videobuf2-dma-contig.h>
33 /* -----------------------------------------------------------------------------
38 * NOTE: When adding new media bus codes, always remember to add
39 * corresponding in-memory formats to the table below!!!
41 static struct isp_format_info formats
[] = {
42 { MEDIA_BUS_FMT_Y8_1X8
, MEDIA_BUS_FMT_Y8_1X8
,
43 MEDIA_BUS_FMT_Y8_1X8
, MEDIA_BUS_FMT_Y8_1X8
,
44 V4L2_PIX_FMT_GREY
, 8, 1, },
45 { MEDIA_BUS_FMT_Y10_1X10
, MEDIA_BUS_FMT_Y10_1X10
,
46 MEDIA_BUS_FMT_Y10_1X10
, MEDIA_BUS_FMT_Y8_1X8
,
47 V4L2_PIX_FMT_Y10
, 10, 2, },
48 { MEDIA_BUS_FMT_Y12_1X12
, MEDIA_BUS_FMT_Y10_1X10
,
49 MEDIA_BUS_FMT_Y12_1X12
, MEDIA_BUS_FMT_Y8_1X8
,
50 V4L2_PIX_FMT_Y12
, 12, 2, },
51 { MEDIA_BUS_FMT_SBGGR8_1X8
, MEDIA_BUS_FMT_SBGGR8_1X8
,
52 MEDIA_BUS_FMT_SBGGR8_1X8
, MEDIA_BUS_FMT_SBGGR8_1X8
,
53 V4L2_PIX_FMT_SBGGR8
, 8, 1, },
54 { MEDIA_BUS_FMT_SGBRG8_1X8
, MEDIA_BUS_FMT_SGBRG8_1X8
,
55 MEDIA_BUS_FMT_SGBRG8_1X8
, MEDIA_BUS_FMT_SGBRG8_1X8
,
56 V4L2_PIX_FMT_SGBRG8
, 8, 1, },
57 { MEDIA_BUS_FMT_SGRBG8_1X8
, MEDIA_BUS_FMT_SGRBG8_1X8
,
58 MEDIA_BUS_FMT_SGRBG8_1X8
, MEDIA_BUS_FMT_SGRBG8_1X8
,
59 V4L2_PIX_FMT_SGRBG8
, 8, 1, },
60 { MEDIA_BUS_FMT_SRGGB8_1X8
, MEDIA_BUS_FMT_SRGGB8_1X8
,
61 MEDIA_BUS_FMT_SRGGB8_1X8
, MEDIA_BUS_FMT_SRGGB8_1X8
,
62 V4L2_PIX_FMT_SRGGB8
, 8, 1, },
63 { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8
, MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8
,
64 MEDIA_BUS_FMT_SBGGR10_1X10
, 0,
65 V4L2_PIX_FMT_SBGGR10DPCM8
, 8, 1, },
66 { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8
, MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8
,
67 MEDIA_BUS_FMT_SGBRG10_1X10
, 0,
68 V4L2_PIX_FMT_SGBRG10DPCM8
, 8, 1, },
69 { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8
, MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8
,
70 MEDIA_BUS_FMT_SGRBG10_1X10
, 0,
71 V4L2_PIX_FMT_SGRBG10DPCM8
, 8, 1, },
72 { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8
, MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8
,
73 MEDIA_BUS_FMT_SRGGB10_1X10
, 0,
74 V4L2_PIX_FMT_SRGGB10DPCM8
, 8, 1, },
75 { MEDIA_BUS_FMT_SBGGR10_1X10
, MEDIA_BUS_FMT_SBGGR10_1X10
,
76 MEDIA_BUS_FMT_SBGGR10_1X10
, MEDIA_BUS_FMT_SBGGR8_1X8
,
77 V4L2_PIX_FMT_SBGGR10
, 10, 2, },
78 { MEDIA_BUS_FMT_SGBRG10_1X10
, MEDIA_BUS_FMT_SGBRG10_1X10
,
79 MEDIA_BUS_FMT_SGBRG10_1X10
, MEDIA_BUS_FMT_SGBRG8_1X8
,
80 V4L2_PIX_FMT_SGBRG10
, 10, 2, },
81 { MEDIA_BUS_FMT_SGRBG10_1X10
, MEDIA_BUS_FMT_SGRBG10_1X10
,
82 MEDIA_BUS_FMT_SGRBG10_1X10
, MEDIA_BUS_FMT_SGRBG8_1X8
,
83 V4L2_PIX_FMT_SGRBG10
, 10, 2, },
84 { MEDIA_BUS_FMT_SRGGB10_1X10
, MEDIA_BUS_FMT_SRGGB10_1X10
,
85 MEDIA_BUS_FMT_SRGGB10_1X10
, MEDIA_BUS_FMT_SRGGB8_1X8
,
86 V4L2_PIX_FMT_SRGGB10
, 10, 2, },
87 { MEDIA_BUS_FMT_SBGGR12_1X12
, MEDIA_BUS_FMT_SBGGR10_1X10
,
88 MEDIA_BUS_FMT_SBGGR12_1X12
, MEDIA_BUS_FMT_SBGGR8_1X8
,
89 V4L2_PIX_FMT_SBGGR12
, 12, 2, },
90 { MEDIA_BUS_FMT_SGBRG12_1X12
, MEDIA_BUS_FMT_SGBRG10_1X10
,
91 MEDIA_BUS_FMT_SGBRG12_1X12
, MEDIA_BUS_FMT_SGBRG8_1X8
,
92 V4L2_PIX_FMT_SGBRG12
, 12, 2, },
93 { MEDIA_BUS_FMT_SGRBG12_1X12
, MEDIA_BUS_FMT_SGRBG10_1X10
,
94 MEDIA_BUS_FMT_SGRBG12_1X12
, MEDIA_BUS_FMT_SGRBG8_1X8
,
95 V4L2_PIX_FMT_SGRBG12
, 12, 2, },
96 { MEDIA_BUS_FMT_SRGGB12_1X12
, MEDIA_BUS_FMT_SRGGB10_1X10
,
97 MEDIA_BUS_FMT_SRGGB12_1X12
, MEDIA_BUS_FMT_SRGGB8_1X8
,
98 V4L2_PIX_FMT_SRGGB12
, 12, 2, },
99 { MEDIA_BUS_FMT_UYVY8_1X16
, MEDIA_BUS_FMT_UYVY8_1X16
,
100 MEDIA_BUS_FMT_UYVY8_1X16
, 0,
101 V4L2_PIX_FMT_UYVY
, 16, 2, },
102 { MEDIA_BUS_FMT_YUYV8_1X16
, MEDIA_BUS_FMT_YUYV8_1X16
,
103 MEDIA_BUS_FMT_YUYV8_1X16
, 0,
104 V4L2_PIX_FMT_YUYV
, 16, 2, },
105 { MEDIA_BUS_FMT_UYVY8_2X8
, MEDIA_BUS_FMT_UYVY8_2X8
,
106 MEDIA_BUS_FMT_UYVY8_2X8
, 0,
107 V4L2_PIX_FMT_UYVY
, 8, 2, },
108 { MEDIA_BUS_FMT_YUYV8_2X8
, MEDIA_BUS_FMT_YUYV8_2X8
,
109 MEDIA_BUS_FMT_YUYV8_2X8
, 0,
110 V4L2_PIX_FMT_YUYV
, 8, 2, },
111 /* Empty entry to catch the unsupported pixel code (0) used by the CCDC
112 * module and avoid NULL pointer dereferences.
117 const struct isp_format_info
*omap3isp_video_format_info(u32 code
)
121 for (i
= 0; i
< ARRAY_SIZE(formats
); ++i
) {
122 if (formats
[i
].code
== code
)
130 * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format
131 * @video: ISP video instance
132 * @mbus: v4l2_mbus_framefmt format (input)
133 * @pix: v4l2_pix_format format (output)
135 * Fill the output pix structure with information from the input mbus format.
136 * The bytesperline and sizeimage fields are computed from the requested bytes
137 * per line value in the pix format and information from the video instance.
139 * Return the number of padding bytes at end of line.
141 static unsigned int isp_video_mbus_to_pix(const struct isp_video
*video
,
142 const struct v4l2_mbus_framefmt
*mbus
,
143 struct v4l2_pix_format
*pix
)
145 unsigned int bpl
= pix
->bytesperline
;
146 unsigned int min_bpl
;
149 memset(pix
, 0, sizeof(*pix
));
150 pix
->width
= mbus
->width
;
151 pix
->height
= mbus
->height
;
153 for (i
= 0; i
< ARRAY_SIZE(formats
); ++i
) {
154 if (formats
[i
].code
== mbus
->code
)
158 if (WARN_ON(i
== ARRAY_SIZE(formats
)))
161 min_bpl
= pix
->width
* formats
[i
].bpp
;
163 /* Clamp the requested bytes per line value. If the maximum bytes per
164 * line value is zero, the module doesn't support user configurable line
165 * sizes. Override the requested value with the minimum in that case.
168 bpl
= clamp(bpl
, min_bpl
, video
->bpl_max
);
172 if (!video
->bpl_zero_padding
|| bpl
!= min_bpl
)
173 bpl
= ALIGN(bpl
, video
->bpl_alignment
);
175 pix
->pixelformat
= formats
[i
].pixelformat
;
176 pix
->bytesperline
= bpl
;
177 pix
->sizeimage
= pix
->bytesperline
* pix
->height
;
178 pix
->colorspace
= mbus
->colorspace
;
179 pix
->field
= mbus
->field
;
181 return bpl
- min_bpl
;
184 static void isp_video_pix_to_mbus(const struct v4l2_pix_format
*pix
,
185 struct v4l2_mbus_framefmt
*mbus
)
189 memset(mbus
, 0, sizeof(*mbus
));
190 mbus
->width
= pix
->width
;
191 mbus
->height
= pix
->height
;
193 /* Skip the last format in the loop so that it will be selected if no
196 for (i
= 0; i
< ARRAY_SIZE(formats
) - 1; ++i
) {
197 if (formats
[i
].pixelformat
== pix
->pixelformat
)
201 mbus
->code
= formats
[i
].code
;
202 mbus
->colorspace
= pix
->colorspace
;
203 mbus
->field
= pix
->field
;
206 static struct v4l2_subdev
*
207 isp_video_remote_subdev(struct isp_video
*video
, u32
*pad
)
209 struct media_pad
*remote
;
211 remote
= media_entity_remote_pad(&video
->pad
);
213 if (remote
== NULL
||
214 media_entity_type(remote
->entity
) != MEDIA_ENT_T_V4L2_SUBDEV
)
218 *pad
= remote
->index
;
220 return media_entity_to_v4l2_subdev(remote
->entity
);
223 /* Return a pointer to the ISP video instance at the far end of the pipeline. */
224 static int isp_video_get_graph_data(struct isp_video
*video
,
225 struct isp_pipeline
*pipe
)
227 struct media_entity_graph graph
;
228 struct media_entity
*entity
= &video
->video
.entity
;
229 struct media_device
*mdev
= entity
->graph_obj
.mdev
;
230 struct isp_video
*far_end
= NULL
;
232 mutex_lock(&mdev
->graph_mutex
);
233 media_entity_graph_walk_start(&graph
, entity
);
235 while ((entity
= media_entity_graph_walk_next(&graph
))) {
236 struct isp_video
*__video
;
238 pipe
->entities
|= 1 << media_entity_id(entity
);
243 if (entity
== &video
->video
.entity
)
246 if (media_entity_type(entity
) != MEDIA_ENT_T_DEVNODE
)
249 __video
= to_isp_video(media_entity_to_video_device(entity
));
250 if (__video
->type
!= video
->type
)
254 mutex_unlock(&mdev
->graph_mutex
);
256 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
257 pipe
->input
= far_end
;
258 pipe
->output
= video
;
264 pipe
->output
= far_end
;
271 __isp_video_get_format(struct isp_video
*video
, struct v4l2_format
*format
)
273 struct v4l2_subdev_format fmt
;
274 struct v4l2_subdev
*subdev
;
278 subdev
= isp_video_remote_subdev(video
, &pad
);
283 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
285 mutex_lock(&video
->mutex
);
286 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &fmt
);
287 mutex_unlock(&video
->mutex
);
292 format
->type
= video
->type
;
293 return isp_video_mbus_to_pix(video
, &fmt
.format
, &format
->fmt
.pix
);
297 isp_video_check_format(struct isp_video
*video
, struct isp_video_fh
*vfh
)
299 struct v4l2_format format
;
302 memcpy(&format
, &vfh
->format
, sizeof(format
));
303 ret
= __isp_video_get_format(video
, &format
);
307 if (vfh
->format
.fmt
.pix
.pixelformat
!= format
.fmt
.pix
.pixelformat
||
308 vfh
->format
.fmt
.pix
.height
!= format
.fmt
.pix
.height
||
309 vfh
->format
.fmt
.pix
.width
!= format
.fmt
.pix
.width
||
310 vfh
->format
.fmt
.pix
.bytesperline
!= format
.fmt
.pix
.bytesperline
||
311 vfh
->format
.fmt
.pix
.sizeimage
!= format
.fmt
.pix
.sizeimage
||
312 vfh
->format
.fmt
.pix
.field
!= format
.fmt
.pix
.field
)
318 /* -----------------------------------------------------------------------------
319 * Video queue operations
322 static int isp_video_queue_setup(struct vb2_queue
*queue
,
323 unsigned int *count
, unsigned int *num_planes
,
324 unsigned int sizes
[], void *alloc_ctxs
[])
326 struct isp_video_fh
*vfh
= vb2_get_drv_priv(queue
);
327 struct isp_video
*video
= vfh
->video
;
331 sizes
[0] = vfh
->format
.fmt
.pix
.sizeimage
;
335 alloc_ctxs
[0] = video
->alloc_ctx
;
337 *count
= min(*count
, video
->capture_mem
/ PAGE_ALIGN(sizes
[0]));
342 static int isp_video_buffer_prepare(struct vb2_buffer
*buf
)
344 struct vb2_v4l2_buffer
*vbuf
= to_vb2_v4l2_buffer(buf
);
345 struct isp_video_fh
*vfh
= vb2_get_drv_priv(buf
->vb2_queue
);
346 struct isp_buffer
*buffer
= to_isp_buffer(vbuf
);
347 struct isp_video
*video
= vfh
->video
;
350 /* Refuse to prepare the buffer is the video node has registered an
351 * error. We don't need to take any lock here as the operation is
352 * inherently racy. The authoritative check will be performed in the
353 * queue handler, which can't return an error, this check is just a best
354 * effort to notify userspace as early as possible.
356 if (unlikely(video
->error
))
359 addr
= vb2_dma_contig_plane_dma_addr(buf
, 0);
360 if (!IS_ALIGNED(addr
, 32)) {
361 dev_dbg(video
->isp
->dev
,
362 "Buffer address must be aligned to 32 bytes boundary.\n");
366 vb2_set_plane_payload(&buffer
->vb
.vb2_buf
, 0,
367 vfh
->format
.fmt
.pix
.sizeimage
);
374 * isp_video_buffer_queue - Add buffer to streaming queue
377 * In memory-to-memory mode, start streaming on the pipeline if buffers are
378 * queued on both the input and the output, if the pipeline isn't already busy.
379 * If the pipeline is busy, it will be restarted in the output module interrupt
382 static void isp_video_buffer_queue(struct vb2_buffer
*buf
)
384 struct vb2_v4l2_buffer
*vbuf
= to_vb2_v4l2_buffer(buf
);
385 struct isp_video_fh
*vfh
= vb2_get_drv_priv(buf
->vb2_queue
);
386 struct isp_buffer
*buffer
= to_isp_buffer(vbuf
);
387 struct isp_video
*video
= vfh
->video
;
388 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
389 enum isp_pipeline_state state
;
394 spin_lock_irqsave(&video
->irqlock
, flags
);
396 if (unlikely(video
->error
)) {
397 vb2_buffer_done(&buffer
->vb
.vb2_buf
, VB2_BUF_STATE_ERROR
);
398 spin_unlock_irqrestore(&video
->irqlock
, flags
);
402 empty
= list_empty(&video
->dmaqueue
);
403 list_add_tail(&buffer
->irqlist
, &video
->dmaqueue
);
405 spin_unlock_irqrestore(&video
->irqlock
, flags
);
408 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
409 state
= ISP_PIPELINE_QUEUE_OUTPUT
;
411 state
= ISP_PIPELINE_QUEUE_INPUT
;
413 spin_lock_irqsave(&pipe
->lock
, flags
);
414 pipe
->state
|= state
;
415 video
->ops
->queue(video
, buffer
);
416 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_QUEUED
;
418 start
= isp_pipeline_ready(pipe
);
420 pipe
->state
|= ISP_PIPELINE_STREAM
;
421 spin_unlock_irqrestore(&pipe
->lock
, flags
);
424 omap3isp_pipeline_set_stream(pipe
,
425 ISP_PIPELINE_STREAM_SINGLESHOT
);
429 static const struct vb2_ops isp_video_queue_ops
= {
430 .queue_setup
= isp_video_queue_setup
,
431 .buf_prepare
= isp_video_buffer_prepare
,
432 .buf_queue
= isp_video_buffer_queue
,
436 * omap3isp_video_buffer_next - Complete the current buffer and return the next
437 * @video: ISP video object
439 * Remove the current video buffer from the DMA queue and fill its timestamp and
440 * field count before handing it back to videobuf2.
442 * For capture video nodes the buffer state is set to VB2_BUF_STATE_DONE if no
443 * error has been flagged in the pipeline, or to VB2_BUF_STATE_ERROR otherwise.
444 * For video output nodes the buffer state is always set to VB2_BUF_STATE_DONE.
446 * The DMA queue is expected to contain at least one buffer.
448 * Return a pointer to the next buffer in the DMA queue, or NULL if the queue is
451 struct isp_buffer
*omap3isp_video_buffer_next(struct isp_video
*video
)
453 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
454 enum isp_pipeline_state state
;
455 struct isp_buffer
*buf
;
458 spin_lock_irqsave(&video
->irqlock
, flags
);
459 if (WARN_ON(list_empty(&video
->dmaqueue
))) {
460 spin_unlock_irqrestore(&video
->irqlock
, flags
);
464 buf
= list_first_entry(&video
->dmaqueue
, struct isp_buffer
,
466 list_del(&buf
->irqlist
);
467 spin_unlock_irqrestore(&video
->irqlock
, flags
);
469 buf
->vb
.vb2_buf
.timestamp
= ktime_get_ns();
471 /* Do frame number propagation only if this is the output video node.
472 * Frame number either comes from the CSI receivers or it gets
473 * incremented here if H3A is not active.
474 * Note: There is no guarantee that the output buffer will finish
475 * first, so the input number might lag behind by 1 in some cases.
477 if (video
== pipe
->output
&& !pipe
->do_propagation
)
479 atomic_inc_return(&pipe
->frame_number
);
481 buf
->vb
.sequence
= atomic_read(&pipe
->frame_number
);
483 if (pipe
->field
!= V4L2_FIELD_NONE
)
484 buf
->vb
.sequence
/= 2;
486 buf
->vb
.field
= pipe
->field
;
488 /* Report pipeline errors to userspace on the capture device side. */
489 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& pipe
->error
) {
490 state
= VB2_BUF_STATE_ERROR
;
493 state
= VB2_BUF_STATE_DONE
;
496 vb2_buffer_done(&buf
->vb
.vb2_buf
, state
);
498 spin_lock_irqsave(&video
->irqlock
, flags
);
500 if (list_empty(&video
->dmaqueue
)) {
501 spin_unlock_irqrestore(&video
->irqlock
, flags
);
503 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
504 state
= ISP_PIPELINE_QUEUE_OUTPUT
505 | ISP_PIPELINE_STREAM
;
507 state
= ISP_PIPELINE_QUEUE_INPUT
508 | ISP_PIPELINE_STREAM
;
510 spin_lock_irqsave(&pipe
->lock
, flags
);
511 pipe
->state
&= ~state
;
512 if (video
->pipe
.stream_state
== ISP_PIPELINE_STREAM_CONTINUOUS
)
513 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
514 spin_unlock_irqrestore(&pipe
->lock
, flags
);
518 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& pipe
->input
!= NULL
) {
519 spin_lock(&pipe
->lock
);
520 pipe
->state
&= ~ISP_PIPELINE_STREAM
;
521 spin_unlock(&pipe
->lock
);
524 buf
= list_first_entry(&video
->dmaqueue
, struct isp_buffer
,
527 spin_unlock_irqrestore(&video
->irqlock
, flags
);
533 * omap3isp_video_cancel_stream - Cancel stream on a video node
534 * @video: ISP video object
536 * Cancelling a stream mark all buffers on the video node as erroneous and makes
537 * sure no new buffer can be queued.
539 void omap3isp_video_cancel_stream(struct isp_video
*video
)
543 spin_lock_irqsave(&video
->irqlock
, flags
);
545 while (!list_empty(&video
->dmaqueue
)) {
546 struct isp_buffer
*buf
;
548 buf
= list_first_entry(&video
->dmaqueue
,
549 struct isp_buffer
, irqlist
);
550 list_del(&buf
->irqlist
);
551 vb2_buffer_done(&buf
->vb
.vb2_buf
, VB2_BUF_STATE_ERROR
);
556 spin_unlock_irqrestore(&video
->irqlock
, flags
);
560 * omap3isp_video_resume - Perform resume operation on the buffers
561 * @video: ISP video object
562 * @continuous: Pipeline is in single shot mode if 0 or continuous mode otherwise
564 * This function is intended to be used on suspend/resume scenario. It
565 * requests video queue layer to discard buffers marked as DONE if it's in
566 * continuous mode and requests ISP modules to queue again the ACTIVE buffer
569 void omap3isp_video_resume(struct isp_video
*video
, int continuous
)
571 struct isp_buffer
*buf
= NULL
;
573 if (continuous
&& video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
574 mutex_lock(&video
->queue_lock
);
575 vb2_discard_done(video
->queue
);
576 mutex_unlock(&video
->queue_lock
);
579 if (!list_empty(&video
->dmaqueue
)) {
580 buf
= list_first_entry(&video
->dmaqueue
,
581 struct isp_buffer
, irqlist
);
582 video
->ops
->queue(video
, buf
);
583 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_QUEUED
;
586 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
590 /* -----------------------------------------------------------------------------
595 isp_video_querycap(struct file
*file
, void *fh
, struct v4l2_capability
*cap
)
597 struct isp_video
*video
= video_drvdata(file
);
599 strlcpy(cap
->driver
, ISP_VIDEO_DRIVER_NAME
, sizeof(cap
->driver
));
600 strlcpy(cap
->card
, video
->video
.name
, sizeof(cap
->card
));
601 strlcpy(cap
->bus_info
, "media", sizeof(cap
->bus_info
));
603 cap
->capabilities
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_VIDEO_OUTPUT
604 | V4L2_CAP_STREAMING
| V4L2_CAP_DEVICE_CAPS
;
606 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
607 cap
->device_caps
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
609 cap
->device_caps
= V4L2_CAP_VIDEO_OUTPUT
| V4L2_CAP_STREAMING
;
615 isp_video_get_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
617 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
618 struct isp_video
*video
= video_drvdata(file
);
620 if (format
->type
!= video
->type
)
623 mutex_lock(&video
->mutex
);
624 *format
= vfh
->format
;
625 mutex_unlock(&video
->mutex
);
631 isp_video_set_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
633 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
634 struct isp_video
*video
= video_drvdata(file
);
635 struct v4l2_mbus_framefmt fmt
;
637 if (format
->type
!= video
->type
)
640 /* Replace unsupported field orders with sane defaults. */
641 switch (format
->fmt
.pix
.field
) {
642 case V4L2_FIELD_NONE
:
643 /* Progressive is supported everywhere. */
645 case V4L2_FIELD_ALTERNATE
:
646 /* ALTERNATE is not supported on output nodes. */
647 if (video
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
)
648 format
->fmt
.pix
.field
= V4L2_FIELD_NONE
;
650 case V4L2_FIELD_INTERLACED
:
651 /* The ISP has no concept of video standard, select the
652 * top-bottom order when the unqualified interlaced order is
655 format
->fmt
.pix
.field
= V4L2_FIELD_INTERLACED_TB
;
657 case V4L2_FIELD_INTERLACED_TB
:
658 case V4L2_FIELD_INTERLACED_BT
:
659 /* Interlaced orders are only supported at the CCDC output. */
660 if (video
!= &video
->isp
->isp_ccdc
.video_out
)
661 format
->fmt
.pix
.field
= V4L2_FIELD_NONE
;
664 case V4L2_FIELD_BOTTOM
:
665 case V4L2_FIELD_SEQ_TB
:
666 case V4L2_FIELD_SEQ_BT
:
668 /* All other field orders are currently unsupported, default to
671 format
->fmt
.pix
.field
= V4L2_FIELD_NONE
;
675 /* Fill the bytesperline and sizeimage fields by converting to media bus
676 * format and back to pixel format.
678 isp_video_pix_to_mbus(&format
->fmt
.pix
, &fmt
);
679 isp_video_mbus_to_pix(video
, &fmt
, &format
->fmt
.pix
);
681 mutex_lock(&video
->mutex
);
682 vfh
->format
= *format
;
683 mutex_unlock(&video
->mutex
);
689 isp_video_try_format(struct file
*file
, void *fh
, struct v4l2_format
*format
)
691 struct isp_video
*video
= video_drvdata(file
);
692 struct v4l2_subdev_format fmt
;
693 struct v4l2_subdev
*subdev
;
697 if (format
->type
!= video
->type
)
700 subdev
= isp_video_remote_subdev(video
, &pad
);
704 isp_video_pix_to_mbus(&format
->fmt
.pix
, &fmt
.format
);
707 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
708 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &fmt
);
710 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
712 isp_video_mbus_to_pix(video
, &fmt
.format
, &format
->fmt
.pix
);
717 isp_video_cropcap(struct file
*file
, void *fh
, struct v4l2_cropcap
*cropcap
)
719 struct isp_video
*video
= video_drvdata(file
);
720 struct v4l2_subdev
*subdev
;
723 subdev
= isp_video_remote_subdev(video
, NULL
);
727 mutex_lock(&video
->mutex
);
728 ret
= v4l2_subdev_call(subdev
, video
, cropcap
, cropcap
);
729 mutex_unlock(&video
->mutex
);
731 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
735 isp_video_get_crop(struct file
*file
, void *fh
, struct v4l2_crop
*crop
)
737 struct isp_video
*video
= video_drvdata(file
);
738 struct v4l2_subdev_format format
;
739 struct v4l2_subdev
*subdev
;
743 subdev
= isp_video_remote_subdev(video
, &pad
);
747 /* Try the get crop operation first and fallback to get format if not
750 ret
= v4l2_subdev_call(subdev
, video
, g_crop
, crop
);
751 if (ret
!= -ENOIOCTLCMD
)
755 format
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
756 ret
= v4l2_subdev_call(subdev
, pad
, get_fmt
, NULL
, &format
);
758 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
762 crop
->c
.width
= format
.format
.width
;
763 crop
->c
.height
= format
.format
.height
;
769 isp_video_set_crop(struct file
*file
, void *fh
, const struct v4l2_crop
*crop
)
771 struct isp_video
*video
= video_drvdata(file
);
772 struct v4l2_subdev
*subdev
;
775 subdev
= isp_video_remote_subdev(video
, NULL
);
779 mutex_lock(&video
->mutex
);
780 ret
= v4l2_subdev_call(subdev
, video
, s_crop
, crop
);
781 mutex_unlock(&video
->mutex
);
783 return ret
== -ENOIOCTLCMD
? -ENOTTY
: ret
;
787 isp_video_get_param(struct file
*file
, void *fh
, struct v4l2_streamparm
*a
)
789 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
790 struct isp_video
*video
= video_drvdata(file
);
792 if (video
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
||
793 video
->type
!= a
->type
)
796 memset(a
, 0, sizeof(*a
));
797 a
->type
= V4L2_BUF_TYPE_VIDEO_OUTPUT
;
798 a
->parm
.output
.capability
= V4L2_CAP_TIMEPERFRAME
;
799 a
->parm
.output
.timeperframe
= vfh
->timeperframe
;
805 isp_video_set_param(struct file
*file
, void *fh
, struct v4l2_streamparm
*a
)
807 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
808 struct isp_video
*video
= video_drvdata(file
);
810 if (video
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
||
811 video
->type
!= a
->type
)
814 if (a
->parm
.output
.timeperframe
.denominator
== 0)
815 a
->parm
.output
.timeperframe
.denominator
= 1;
817 vfh
->timeperframe
= a
->parm
.output
.timeperframe
;
823 isp_video_reqbufs(struct file
*file
, void *fh
, struct v4l2_requestbuffers
*rb
)
825 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
826 struct isp_video
*video
= video_drvdata(file
);
829 mutex_lock(&video
->queue_lock
);
830 ret
= vb2_reqbufs(&vfh
->queue
, rb
);
831 mutex_unlock(&video
->queue_lock
);
837 isp_video_querybuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
839 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
840 struct isp_video
*video
= video_drvdata(file
);
843 mutex_lock(&video
->queue_lock
);
844 ret
= vb2_querybuf(&vfh
->queue
, b
);
845 mutex_unlock(&video
->queue_lock
);
851 isp_video_qbuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
853 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
854 struct isp_video
*video
= video_drvdata(file
);
857 mutex_lock(&video
->queue_lock
);
858 ret
= vb2_qbuf(&vfh
->queue
, b
);
859 mutex_unlock(&video
->queue_lock
);
865 isp_video_dqbuf(struct file
*file
, void *fh
, struct v4l2_buffer
*b
)
867 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
868 struct isp_video
*video
= video_drvdata(file
);
871 mutex_lock(&video
->queue_lock
);
872 ret
= vb2_dqbuf(&vfh
->queue
, b
, file
->f_flags
& O_NONBLOCK
);
873 mutex_unlock(&video
->queue_lock
);
878 static int isp_video_check_external_subdevs(struct isp_video
*video
,
879 struct isp_pipeline
*pipe
)
881 struct isp_device
*isp
= video
->isp
;
882 struct media_entity
*ents
[] = {
883 &isp
->isp_csi2a
.subdev
.entity
,
884 &isp
->isp_csi2c
.subdev
.entity
,
885 &isp
->isp_ccp2
.subdev
.entity
,
886 &isp
->isp_ccdc
.subdev
.entity
888 struct media_pad
*source_pad
;
889 struct media_entity
*source
= NULL
;
890 struct media_entity
*sink
;
891 struct v4l2_subdev_format fmt
;
892 struct v4l2_ext_controls ctrls
;
893 struct v4l2_ext_control ctrl
;
898 /* Memory-to-memory pipelines have no external subdev. */
899 if (pipe
->input
!= NULL
)
902 for (i
= 0; i
< ARRAY_SIZE(ents
); i
++) {
903 /* Is the entity part of the pipeline? */
904 if (!(pipe
->entities
& (1 << media_entity_id(ents
[i
]))))
907 /* ISP entities have always sink pad == 0. Find source. */
908 source_pad
= media_entity_remote_pad(&ents
[i
]->pads
[0]);
909 if (source_pad
== NULL
)
912 source
= source_pad
->entity
;
918 dev_warn(isp
->dev
, "can't find source, failing now\n");
922 if (media_entity_type(source
) != MEDIA_ENT_T_V4L2_SUBDEV
)
925 pipe
->external
= media_entity_to_v4l2_subdev(source
);
927 fmt
.pad
= source_pad
->index
;
928 fmt
.which
= V4L2_SUBDEV_FORMAT_ACTIVE
;
929 ret
= v4l2_subdev_call(media_entity_to_v4l2_subdev(sink
),
930 pad
, get_fmt
, NULL
, &fmt
);
931 if (unlikely(ret
< 0)) {
932 dev_warn(isp
->dev
, "get_fmt returned null!\n");
936 pipe
->external_width
=
937 omap3isp_video_format_info(fmt
.format
.code
)->width
;
939 memset(&ctrls
, 0, sizeof(ctrls
));
940 memset(&ctrl
, 0, sizeof(ctrl
));
942 ctrl
.id
= V4L2_CID_PIXEL_RATE
;
945 ctrls
.controls
= &ctrl
;
947 ret
= v4l2_g_ext_ctrls(pipe
->external
->ctrl_handler
, &ctrls
);
949 dev_warn(isp
->dev
, "no pixel rate control in subdev %s\n",
950 pipe
->external
->name
);
954 pipe
->external_rate
= ctrl
.value64
;
956 id
= media_entity_id(&isp
->isp_ccdc
.subdev
.entity
);
957 if (pipe
->entities
& (1 << id
)) {
958 unsigned int rate
= UINT_MAX
;
960 * Check that maximum allowed CCDC pixel rate isn't
961 * exceeded by the pixel rate.
963 omap3isp_ccdc_max_rate(&isp
->isp_ccdc
, &rate
);
964 if (pipe
->external_rate
> rate
)
974 * Every ISP pipeline has a single input and a single output. The input can be
975 * either a sensor or a video node. The output is always a video node.
977 * As every pipeline has an output video node, the ISP video objects at the
978 * pipeline output stores the pipeline state. It tracks the streaming state of
979 * both the input and output, as well as the availability of buffers.
981 * In sensor-to-memory mode, frames are always available at the pipeline input.
982 * Starting the sensor usually requires I2C transfers and must be done in
983 * interruptible context. The pipeline is started and stopped synchronously
984 * to the stream on/off commands. All modules in the pipeline will get their
985 * subdev set stream handler called. The module at the end of the pipeline must
986 * delay starting the hardware until buffers are available at its output.
988 * In memory-to-memory mode, starting/stopping the stream requires
989 * synchronization between the input and output. ISP modules can't be stopped
990 * in the middle of a frame, and at least some of the modules seem to become
991 * busy as soon as they're started, even if they don't receive a frame start
992 * event. For that reason frames need to be processed in single-shot mode. The
993 * driver needs to wait until a frame is completely processed and written to
994 * memory before restarting the pipeline for the next frame. Pipelined
995 * processing might be possible but requires more testing.
997 * Stream start must be delayed until buffers are available at both the input
998 * and output. The pipeline must be started in the videobuf queue callback with
999 * the buffers queue spinlock held. The modules subdev set stream operation must
1003 isp_video_streamon(struct file
*file
, void *fh
, enum v4l2_buf_type type
)
1005 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
1006 struct isp_video
*video
= video_drvdata(file
);
1007 enum isp_pipeline_state state
;
1008 struct isp_pipeline
*pipe
;
1009 unsigned long flags
;
1012 if (type
!= video
->type
)
1015 mutex_lock(&video
->stream_lock
);
1017 /* Start streaming on the pipeline. No link touching an entity in the
1018 * pipeline can be activated or deactivated once streaming is started.
1020 pipe
= video
->video
.entity
.pipe
1021 ? to_isp_pipeline(&video
->video
.entity
) : &video
->pipe
;
1025 /* TODO: Implement PM QoS */
1026 pipe
->l3_ick
= clk_get_rate(video
->isp
->clock
[ISP_CLK_L3_ICK
]);
1027 pipe
->max_rate
= pipe
->l3_ick
;
1029 ret
= media_entity_pipeline_start(&video
->video
.entity
, &pipe
->pipe
);
1031 goto err_pipeline_start
;
1033 /* Verify that the currently configured format matches the output of
1034 * the connected subdev.
1036 ret
= isp_video_check_format(video
, vfh
);
1038 goto err_check_format
;
1040 video
->bpl_padding
= ret
;
1041 video
->bpl_value
= vfh
->format
.fmt
.pix
.bytesperline
;
1043 ret
= isp_video_get_graph_data(video
, pipe
);
1045 goto err_check_format
;
1047 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1048 state
= ISP_PIPELINE_STREAM_OUTPUT
| ISP_PIPELINE_IDLE_OUTPUT
;
1050 state
= ISP_PIPELINE_STREAM_INPUT
| ISP_PIPELINE_IDLE_INPUT
;
1052 ret
= isp_video_check_external_subdevs(video
, pipe
);
1054 goto err_check_format
;
1056 pipe
->error
= false;
1058 spin_lock_irqsave(&pipe
->lock
, flags
);
1059 pipe
->state
&= ~ISP_PIPELINE_STREAM
;
1060 pipe
->state
|= state
;
1061 spin_unlock_irqrestore(&pipe
->lock
, flags
);
1063 /* Set the maximum time per frame as the value requested by userspace.
1064 * This is a soft limit that can be overridden if the hardware doesn't
1065 * support the request limit.
1067 if (video
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
)
1068 pipe
->max_timeperframe
= vfh
->timeperframe
;
1070 video
->queue
= &vfh
->queue
;
1071 INIT_LIST_HEAD(&video
->dmaqueue
);
1072 atomic_set(&pipe
->frame_number
, -1);
1073 pipe
->field
= vfh
->format
.fmt
.pix
.field
;
1075 mutex_lock(&video
->queue_lock
);
1076 ret
= vb2_streamon(&vfh
->queue
, type
);
1077 mutex_unlock(&video
->queue_lock
);
1079 goto err_check_format
;
1081 /* In sensor-to-memory mode, the stream can be started synchronously
1082 * to the stream on command. In memory-to-memory mode, it will be
1083 * started when buffers are queued on both the input and output.
1085 if (pipe
->input
== NULL
) {
1086 ret
= omap3isp_pipeline_set_stream(pipe
,
1087 ISP_PIPELINE_STREAM_CONTINUOUS
);
1089 goto err_set_stream
;
1090 spin_lock_irqsave(&video
->irqlock
, flags
);
1091 if (list_empty(&video
->dmaqueue
))
1092 video
->dmaqueue_flags
|= ISP_VIDEO_DMAQUEUE_UNDERRUN
;
1093 spin_unlock_irqrestore(&video
->irqlock
, flags
);
1096 mutex_unlock(&video
->stream_lock
);
1100 mutex_lock(&video
->queue_lock
);
1101 vb2_streamoff(&vfh
->queue
, type
);
1102 mutex_unlock(&video
->queue_lock
);
1104 media_entity_pipeline_stop(&video
->video
.entity
);
1106 /* TODO: Implement PM QoS */
1107 /* The DMA queue must be emptied here, otherwise CCDC interrupts that
1108 * will get triggered the next time the CCDC is powered up will try to
1109 * access buffers that might have been freed but still present in the
1110 * DMA queue. This can easily get triggered if the above
1111 * omap3isp_pipeline_set_stream() call fails on a system with a
1112 * free-running sensor.
1114 INIT_LIST_HEAD(&video
->dmaqueue
);
1115 video
->queue
= NULL
;
1117 mutex_unlock(&video
->stream_lock
);
1122 isp_video_streamoff(struct file
*file
, void *fh
, enum v4l2_buf_type type
)
1124 struct isp_video_fh
*vfh
= to_isp_video_fh(fh
);
1125 struct isp_video
*video
= video_drvdata(file
);
1126 struct isp_pipeline
*pipe
= to_isp_pipeline(&video
->video
.entity
);
1127 enum isp_pipeline_state state
;
1128 unsigned int streaming
;
1129 unsigned long flags
;
1131 if (type
!= video
->type
)
1134 mutex_lock(&video
->stream_lock
);
1136 /* Make sure we're not streaming yet. */
1137 mutex_lock(&video
->queue_lock
);
1138 streaming
= vb2_is_streaming(&vfh
->queue
);
1139 mutex_unlock(&video
->queue_lock
);
1144 /* Update the pipeline state. */
1145 if (video
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1146 state
= ISP_PIPELINE_STREAM_OUTPUT
1147 | ISP_PIPELINE_QUEUE_OUTPUT
;
1149 state
= ISP_PIPELINE_STREAM_INPUT
1150 | ISP_PIPELINE_QUEUE_INPUT
;
1152 spin_lock_irqsave(&pipe
->lock
, flags
);
1153 pipe
->state
&= ~state
;
1154 spin_unlock_irqrestore(&pipe
->lock
, flags
);
1156 /* Stop the stream. */
1157 omap3isp_pipeline_set_stream(pipe
, ISP_PIPELINE_STREAM_STOPPED
);
1158 omap3isp_video_cancel_stream(video
);
1160 mutex_lock(&video
->queue_lock
);
1161 vb2_streamoff(&vfh
->queue
, type
);
1162 mutex_unlock(&video
->queue_lock
);
1163 video
->queue
= NULL
;
1164 video
->error
= false;
1166 /* TODO: Implement PM QoS */
1167 media_entity_pipeline_stop(&video
->video
.entity
);
1170 mutex_unlock(&video
->stream_lock
);
1175 isp_video_enum_input(struct file
*file
, void *fh
, struct v4l2_input
*input
)
1177 if (input
->index
> 0)
1180 strlcpy(input
->name
, "camera", sizeof(input
->name
));
1181 input
->type
= V4L2_INPUT_TYPE_CAMERA
;
1187 isp_video_g_input(struct file
*file
, void *fh
, unsigned int *input
)
1195 isp_video_s_input(struct file
*file
, void *fh
, unsigned int input
)
1197 return input
== 0 ? 0 : -EINVAL
;
1200 static const struct v4l2_ioctl_ops isp_video_ioctl_ops
= {
1201 .vidioc_querycap
= isp_video_querycap
,
1202 .vidioc_g_fmt_vid_cap
= isp_video_get_format
,
1203 .vidioc_s_fmt_vid_cap
= isp_video_set_format
,
1204 .vidioc_try_fmt_vid_cap
= isp_video_try_format
,
1205 .vidioc_g_fmt_vid_out
= isp_video_get_format
,
1206 .vidioc_s_fmt_vid_out
= isp_video_set_format
,
1207 .vidioc_try_fmt_vid_out
= isp_video_try_format
,
1208 .vidioc_cropcap
= isp_video_cropcap
,
1209 .vidioc_g_crop
= isp_video_get_crop
,
1210 .vidioc_s_crop
= isp_video_set_crop
,
1211 .vidioc_g_parm
= isp_video_get_param
,
1212 .vidioc_s_parm
= isp_video_set_param
,
1213 .vidioc_reqbufs
= isp_video_reqbufs
,
1214 .vidioc_querybuf
= isp_video_querybuf
,
1215 .vidioc_qbuf
= isp_video_qbuf
,
1216 .vidioc_dqbuf
= isp_video_dqbuf
,
1217 .vidioc_streamon
= isp_video_streamon
,
1218 .vidioc_streamoff
= isp_video_streamoff
,
1219 .vidioc_enum_input
= isp_video_enum_input
,
1220 .vidioc_g_input
= isp_video_g_input
,
1221 .vidioc_s_input
= isp_video_s_input
,
1224 /* -----------------------------------------------------------------------------
1225 * V4L2 file operations
1228 static int isp_video_open(struct file
*file
)
1230 struct isp_video
*video
= video_drvdata(file
);
1231 struct isp_video_fh
*handle
;
1232 struct vb2_queue
*queue
;
1235 handle
= kzalloc(sizeof(*handle
), GFP_KERNEL
);
1239 v4l2_fh_init(&handle
->vfh
, &video
->video
);
1240 v4l2_fh_add(&handle
->vfh
);
1242 /* If this is the first user, initialise the pipeline. */
1243 if (omap3isp_get(video
->isp
) == NULL
) {
1248 ret
= omap3isp_pipeline_pm_use(&video
->video
.entity
, 1);
1250 omap3isp_put(video
->isp
);
1254 queue
= &handle
->queue
;
1255 queue
->type
= video
->type
;
1256 queue
->io_modes
= VB2_MMAP
| VB2_USERPTR
;
1257 queue
->drv_priv
= handle
;
1258 queue
->ops
= &isp_video_queue_ops
;
1259 queue
->mem_ops
= &vb2_dma_contig_memops
;
1260 queue
->buf_struct_size
= sizeof(struct isp_buffer
);
1261 queue
->timestamp_flags
= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
;
1263 ret
= vb2_queue_init(&handle
->queue
);
1265 omap3isp_put(video
->isp
);
1269 memset(&handle
->format
, 0, sizeof(handle
->format
));
1270 handle
->format
.type
= video
->type
;
1271 handle
->timeperframe
.denominator
= 1;
1273 handle
->video
= video
;
1274 file
->private_data
= &handle
->vfh
;
1278 v4l2_fh_del(&handle
->vfh
);
1285 static int isp_video_release(struct file
*file
)
1287 struct isp_video
*video
= video_drvdata(file
);
1288 struct v4l2_fh
*vfh
= file
->private_data
;
1289 struct isp_video_fh
*handle
= to_isp_video_fh(vfh
);
1291 /* Disable streaming and free the buffers queue resources. */
1292 isp_video_streamoff(file
, vfh
, video
->type
);
1294 mutex_lock(&video
->queue_lock
);
1295 vb2_queue_release(&handle
->queue
);
1296 mutex_unlock(&video
->queue_lock
);
1298 omap3isp_pipeline_pm_use(&video
->video
.entity
, 0);
1300 /* Release the file handle. */
1303 file
->private_data
= NULL
;
1305 omap3isp_put(video
->isp
);
1310 static unsigned int isp_video_poll(struct file
*file
, poll_table
*wait
)
1312 struct isp_video_fh
*vfh
= to_isp_video_fh(file
->private_data
);
1313 struct isp_video
*video
= video_drvdata(file
);
1316 mutex_lock(&video
->queue_lock
);
1317 ret
= vb2_poll(&vfh
->queue
, file
, wait
);
1318 mutex_unlock(&video
->queue_lock
);
1323 static int isp_video_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1325 struct isp_video_fh
*vfh
= to_isp_video_fh(file
->private_data
);
1327 return vb2_mmap(&vfh
->queue
, vma
);
1330 static struct v4l2_file_operations isp_video_fops
= {
1331 .owner
= THIS_MODULE
,
1332 .unlocked_ioctl
= video_ioctl2
,
1333 .open
= isp_video_open
,
1334 .release
= isp_video_release
,
1335 .poll
= isp_video_poll
,
1336 .mmap
= isp_video_mmap
,
1339 /* -----------------------------------------------------------------------------
1343 static const struct isp_video_operations isp_video_dummy_ops
= {
1346 int omap3isp_video_init(struct isp_video
*video
, const char *name
)
1348 const char *direction
;
1351 switch (video
->type
) {
1352 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1353 direction
= "output";
1354 video
->pad
.flags
= MEDIA_PAD_FL_SINK
1355 | MEDIA_PAD_FL_MUST_CONNECT
;
1357 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1358 direction
= "input";
1359 video
->pad
.flags
= MEDIA_PAD_FL_SOURCE
1360 | MEDIA_PAD_FL_MUST_CONNECT
;
1361 video
->video
.vfl_dir
= VFL_DIR_TX
;
1368 video
->alloc_ctx
= vb2_dma_contig_init_ctx(video
->isp
->dev
);
1369 if (IS_ERR(video
->alloc_ctx
))
1370 return PTR_ERR(video
->alloc_ctx
);
1372 ret
= media_entity_init(&video
->video
.entity
, 1, &video
->pad
);
1374 vb2_dma_contig_cleanup_ctx(video
->alloc_ctx
);
1378 mutex_init(&video
->mutex
);
1379 atomic_set(&video
->active
, 0);
1381 spin_lock_init(&video
->pipe
.lock
);
1382 mutex_init(&video
->stream_lock
);
1383 mutex_init(&video
->queue_lock
);
1384 spin_lock_init(&video
->irqlock
);
1386 /* Initialize the video device. */
1387 if (video
->ops
== NULL
)
1388 video
->ops
= &isp_video_dummy_ops
;
1390 video
->video
.fops
= &isp_video_fops
;
1391 snprintf(video
->video
.name
, sizeof(video
->video
.name
),
1392 "OMAP3 ISP %s %s", name
, direction
);
1393 video
->video
.vfl_type
= VFL_TYPE_GRABBER
;
1394 video
->video
.release
= video_device_release_empty
;
1395 video
->video
.ioctl_ops
= &isp_video_ioctl_ops
;
1396 video
->pipe
.stream_state
= ISP_PIPELINE_STREAM_STOPPED
;
1398 video_set_drvdata(&video
->video
, video
);
1403 void omap3isp_video_cleanup(struct isp_video
*video
)
1405 vb2_dma_contig_cleanup_ctx(video
->alloc_ctx
);
1406 media_entity_cleanup(&video
->video
.entity
);
1407 mutex_destroy(&video
->queue_lock
);
1408 mutex_destroy(&video
->stream_lock
);
1409 mutex_destroy(&video
->mutex
);
1412 int omap3isp_video_register(struct isp_video
*video
, struct v4l2_device
*vdev
)
1416 video
->video
.v4l2_dev
= vdev
;
1418 ret
= video_register_device(&video
->video
, VFL_TYPE_GRABBER
, -1);
1420 dev_err(video
->isp
->dev
,
1421 "%s: could not register video device (%d)\n",
1427 void omap3isp_video_unregister(struct isp_video
*video
)
1429 if (video_is_registered(&video
->video
))
1430 video_unregister_device(&video
->video
);