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Message-Id: <20180131102427.207721-3-acourbot@chromium.org>
Date: Wed, 31 Jan 2018 19:24:20 +0900
From: Alexandre Courbot <acourbot@...omium.org>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil <hverkuil@...all.nl>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Pawel Osciak <posciak@...omium.org>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Tomasz Figa <tfiga@...omium.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Gustavo Padovan <gustavo.padovan@...labora.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
Hans Verkuil <hans.verkuil@...co.com>,
Alexandre Courbot <acourbot@...omium.org>
Subject: [RFCv2 02/17] videodev2.h: Add request_fd field to v4l2_buffer
From: Hans Verkuil <hans.verkuil@...co.com>
When queuing buffers allow for passing the request that should
be associated with this buffer.
Signed-off-by: Hans Verkuil <hans.verkuil@...co.com>
[acourbot@...omium.org: make request ID 32-bit]
Signed-off-by: Alexandre Courbot <acourbot@...omium.org>
---
drivers/media/usb/cpia2/cpia2_v4l.c | 2 +-
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 7 ++++---
drivers/media/v4l2-core/v4l2-ioctl.c | 4 ++--
drivers/media/v4l2-core/videobuf2-v4l2.c | 3 ++-
include/media/videobuf2-v4l2.h | 2 ++
include/uapi/linux/videodev2.h | 3 ++-
6 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/drivers/media/usb/cpia2/cpia2_v4l.c b/drivers/media/usb/cpia2/cpia2_v4l.c
index 3dedd83f0b19..7acb6807b306 100644
--- a/drivers/media/usb/cpia2/cpia2_v4l.c
+++ b/drivers/media/usb/cpia2/cpia2_v4l.c
@@ -948,7 +948,7 @@ static int cpia2_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
buf->sequence = cam->buffers[buf->index].seq;
buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
buf->length = cam->frame_size;
- buf->reserved2 = 0;
+ buf->request_fd = 0;
buf->reserved = 0;
memset(&buf->timecode, 0, sizeof(buf->timecode));
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index 821f2aa299ae..7e4440950c76 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -370,7 +370,7 @@ struct v4l2_buffer32 {
__s32 fd;
} m;
__u32 length;
- __u32 reserved2;
+ __u32 request_fd;
__u32 reserved;
};
@@ -438,7 +438,8 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
get_user(kp->type, &up->type) ||
get_user(kp->flags, &up->flags) ||
get_user(kp->memory, &up->memory) ||
- get_user(kp->length, &up->length))
+ get_user(kp->length, &up->length) ||
+ get_user(kp->request_fd, &up->request_fd))
return -EFAULT;
if (V4L2_TYPE_IS_OUTPUT(kp->type))
@@ -533,7 +534,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
put_user(kp->sequence, &up->sequence) ||
- put_user(kp->reserved2, &up->reserved2) ||
+ put_user(kp->request_fd, &up->request_fd) ||
put_user(kp->reserved, &up->reserved) ||
put_user(kp->length, &up->length))
return -EFAULT;
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index ec4ecd5aa8bf..fdd2f784c264 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -437,13 +437,13 @@ static void v4l_print_buffer(const void *arg, bool write_only)
const struct v4l2_plane *plane;
int i;
- pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, flags=0x%08x, field=%s, sequence=%d, memory=%s",
+ pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, request_fd=%u, flags=0x%08x, field=%s, sequence=%d, memory=%s",
p->timestamp.tv_sec / 3600,
(int)(p->timestamp.tv_sec / 60) % 60,
(int)(p->timestamp.tv_sec % 60),
(long)p->timestamp.tv_usec,
p->index,
- prt_names(p->type, v4l2_type_names),
+ prt_names(p->type, v4l2_type_names), p->request_fd,
p->flags, prt_names(p->field, v4l2_field_names),
p->sequence, prt_names(p->memory, v4l2_memory_names));
diff --git a/drivers/media/v4l2-core/videobuf2-v4l2.c b/drivers/media/v4l2-core/videobuf2-v4l2.c
index 0c0669976bdc..0f8edbdebe30 100644
--- a/drivers/media/v4l2-core/videobuf2-v4l2.c
+++ b/drivers/media/v4l2-core/videobuf2-v4l2.c
@@ -203,7 +203,7 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, void *pb)
b->timestamp = ns_to_timeval(vb->timestamp);
b->timecode = vbuf->timecode;
b->sequence = vbuf->sequence;
- b->reserved2 = 0;
+ b->request_fd = vbuf->request_fd;
b->reserved = 0;
if (q->is_multiplanar) {
@@ -320,6 +320,7 @@ static int __fill_vb2_buffer(struct vb2_buffer *vb,
}
vb->timestamp = 0;
vbuf->sequence = 0;
+ vbuf->request_fd = b->request_fd;
if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
if (b->memory == VB2_MEMORY_USERPTR) {
diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
index 036127c54bbf..d7cf4c66db38 100644
--- a/include/media/videobuf2-v4l2.h
+++ b/include/media/videobuf2-v4l2.h
@@ -31,6 +31,7 @@
* @field: enum v4l2_field; field order of the image in the buffer
* @timecode: frame timecode
* @sequence: sequence count of this frame
+ * @request_fd: fd of the request used by the buffer
*
* Should contain enough information to be able to cover all the fields
* of struct v4l2_buffer at videodev2.h
@@ -42,6 +43,7 @@ struct vb2_v4l2_buffer {
__u32 field;
struct v4l2_timecode timecode;
__u32 sequence;
+ __u32 request_fd;
};
/*
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 1c095b5a99c5..89bd716c66a6 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -902,6 +902,7 @@ struct v4l2_plane {
* @length: size in bytes of the buffer (NOT its payload) for single-plane
* buffers (when type != *_MPLANE); number of elements in the
* planes array for multi-plane buffers
+ * @request_fd: fd of the request that this buffer should use
*
* Contains data exchanged by application and driver using one of the Streaming
* I/O methods.
@@ -925,7 +926,7 @@ struct v4l2_buffer {
__s32 fd;
} m;
__u32 length;
- __u32 reserved2;
+ __s32 request_fd;
__u32 reserved;
};
--
2.16.0.rc1.238.g530d649a79-goog
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