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[media] media: videobuf2: Prepare to divide videobuf2

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Prepare to divide videobuf2
- Separate vb2 trace events from v4l2 trace event.
- Make wrapper functions that will move to v4l2-side.
- Make vb2_core_* functions that will remain in core-side.
- Add a callback function table for buffer operation which makes vb2-core
  to be able to invoke a v4l2-side functions.
- Rename internal functions as vb2_*.

Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Junghak Sung 2015-10-06 06:37:48 -03:00 committed by Mauro Carvalho Chehab
parent bed04f9342
commit b0e0e1f83d
7 changed files with 484 additions and 207 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/v4l2-core/Makefile
View File

@ -14,7 +14,7 @@ ifeq ($(CONFIG_OF),y)
videodev-objs += v4l2-of.o
endif
ifeq ($(CONFIG_TRACEPOINTS),y)
videodev-objs += v4l2-trace.o
videodev-objs += vb2-trace.o v4l2-trace.o
endif
obj-$(CONFIG_VIDEO_V4L2) += videodev.o

8
drivers/media/v4l2-core/v4l2-trace.c
View File

@ -5,7 +5,7 @@
#define CREATE_TRACE_POINTS
#include <trace/events/v4l2.h>
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_buf_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_buf_queue);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_dqbuf);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_qbuf);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_v4l2_buf_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_v4l2_buf_queue);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_v4l2_dqbuf);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_v4l2_qbuf);

9
drivers/media/v4l2-core/vb2-trace.c Normal file
View File

@ -0,0 +1,9 @@
#include <media/videobuf2-core.h>
#define CREATE_TRACE_POINTS
#include <trace/events/vb2.h>
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_buf_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_buf_queue);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_dqbuf);
EXPORT_TRACEPOINT_SYMBOL_GPL(vb2_qbuf);

569
drivers/media/v4l2-core/videobuf2-core.c
View File

File diff suppressed because it is too large Load Diff

10
include/media/videobuf2-core.h
View File

@ -363,6 +363,12 @@ struct vb2_ops {
void (*buf_queue)(struct vb2_buffer *vb);
};
struct vb2_buf_ops {
int (*fill_user_buffer)(struct vb2_buffer *vb, void *pb);
int (*fill_vb2_buffer)(struct vb2_buffer *vb, const void *pb,
struct vb2_plane *planes);
int (*set_timestamp)(struct vb2_buffer *vb, const void *pb);
};
/**
* struct vb2_queue - a videobuf queue
@ -385,6 +391,8 @@ struct vb2_ops {
* drivers to easily associate an owner filehandle with the queue.
* @ops: driver-specific callbacks
* @mem_ops: memory allocator specific callbacks
* @buf_ops: callbacks to deliver buffer information
* between user-space and kernel-space
* @drv_priv: driver private data
* @buf_struct_size: size of the driver-specific buffer structure;
* "0" indicates the driver doesn't want to use a custom buffer
@ -440,6 +448,8 @@ struct vb2_queue {
const struct vb2_ops *ops;
const struct vb2_mem_ops *mem_ops;
const struct vb2_buf_ops *buf_ops;
void *drv_priv;
unsigned int buf_struct_size;
u32 timestamp_flags;

28
include/trace/events/v4l2.h
View File

@ -175,17 +175,12 @@ DEFINE_EVENT(v4l2_event_class, v4l2_qbuf,
TP_ARGS(minor, buf)
);
DECLARE_EVENT_CLASS(vb2_event_class,
DECLARE_EVENT_CLASS(vb2_v4l2_event_class,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb),
TP_STRUCT__entry(
__field(int, minor)
__field(u32, queued_count)
__field(int, owned_by_drv_count)
__field(u32, index)
__field(u32, type)
__field(u32, bytesused)
__field(u32, flags)
__field(u32, field)
__field(s64, timestamp)
@ -207,12 +202,6 @@ DECLARE_EVENT_CLASS(vb2_event_class,
struct v4l2_fh *owner = q->owner;
__entry->minor = owner ? owner->vdev->minor : -1;
__entry->queued_count = q->queued_count;
__entry->owned_by_drv_count =
atomic_read(&q->owned_by_drv_count);
__entry->index = vb->index;
__entry->type = vb->type;
__entry->bytesused = vb->planes[0].bytesused;
__entry->flags = vbuf->flags;
__entry->field = vbuf->field;
__entry->timestamp = timeval_to_ns(&vbuf->timestamp);
@ -229,15 +218,10 @@ DECLARE_EVENT_CLASS(vb2_event_class,
__entry->sequence = vbuf->sequence;
),
TP_printk("minor = %d, queued = %u, owned_by_drv = %d, index = %u, "
"type = %s, bytesused = %u, flags = %s, field = %s, "
TP_printk("minor=%d flags = %s, field = %s, "
"timestamp = %llu, timecode = { type = %s, flags = %s, "
"frames = %u, seconds = %u, minutes = %u, hours = %u, "
"userbits = { %u %u %u %u } }, sequence = %u", __entry->minor,
__entry->queued_count,
__entry->owned_by_drv_count,
__entry->index, show_type(__entry->type),
__entry->bytesused,
show_flags(__entry->flags),
show_field(__entry->field),
__entry->timestamp,
@ -255,22 +239,22 @@ DECLARE_EVENT_CLASS(vb2_event_class,
)
)
DEFINE_EVENT(vb2_event_class, vb2_buf_done,
DEFINE_EVENT(vb2_v4l2_event_class, vb2_v4l2_buf_done,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb)
);
DEFINE_EVENT(vb2_event_class, vb2_buf_queue,
DEFINE_EVENT(vb2_v4l2_event_class, vb2_v4l2_buf_queue,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb)
);
DEFINE_EVENT(vb2_event_class, vb2_dqbuf,
DEFINE_EVENT(vb2_v4l2_event_class, vb2_v4l2_dqbuf,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb)
);
DEFINE_EVENT(vb2_event_class, vb2_qbuf,
DEFINE_EVENT(vb2_v4l2_event_class, vb2_v4l2_qbuf,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb)
);

65
include/trace/events/vb2.h Normal file
View File

@ -0,0 +1,65 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM vb2
#if !defined(_TRACE_VB2_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_VB2_H
#include <linux/tracepoint.h>
#include <media/videobuf2-core.h>
DECLARE_EVENT_CLASS(vb2_event_class,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb),
TP_STRUCT__entry(
__field(void *, owner)
__field(u32, queued_count)
__field(int, owned_by_drv_count)
__field(u32, index)
__field(u32, type)
__field(u32, bytesused)
),
TP_fast_assign(
__entry->owner = q->owner;
__entry->queued_count = q->queued_count;
__entry->owned_by_drv_count =
atomic_read(&q->owned_by_drv_count);
__entry->index = vb->index;
__entry->type = vb->type;
__entry->bytesused = vb->planes[0].bytesused;
),
TP_printk("owner = %p, queued = %u, owned_by_drv = %d, index = %u, "
"type = %u, bytesused = %u", __entry->owner,
__entry->queued_count,
__entry->owned_by_drv_count,
__entry->index, __entry->type,
__entry->bytesused
)
)
DEFINE_EVENT(vb2_event_class, vb2_buf_done,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb)
);
DEFINE_EVENT(vb2_event_class, vb2_buf_queue,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb)
);
DEFINE_EVENT(vb2_event_class, vb2_dqbuf,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb)
);
DEFINE_EVENT(vb2_event_class, vb2_qbuf,
TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
TP_ARGS(q, vb)
);
#endif /* if !defined(_TRACE_VB2_H) || defined(TRACE_HEADER_MULTI_READ) */
/* This part must be outside protection */
#include <trace/define_trace.h>