From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/drivers/media/common/videobuf2/videobuf2-v4l2.c | 723 ++++++++++++++++++++++++++++++++++++++++---------------
1 files changed, 520 insertions(+), 203 deletions(-)
diff --git a/kernel/drivers/media/common/videobuf2/videobuf2-v4l2.c b/kernel/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 4b1ac1a..cb4685c 100644
--- a/kernel/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/kernel/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -14,40 +14,48 @@
* the Free Software Foundation.
*/
+#include <linux/device.h>
#include <linux/err.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/poll.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
#include <linux/freezer.h>
+#include <linux/kernel.h>
#include <linux/kthread.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
-#include <media/v4l2-dev.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fh.h>
#include <media/videobuf2-v4l2.h>
static int debug;
module_param(debug, int, 0644);
-#define dprintk(level, fmt, arg...) \
+#define dprintk(q, level, fmt, arg...) \
do { \
if (debug >= level) \
- pr_info("vb2-v4l2: %s: " fmt, __func__, ## arg); \
+ pr_info("vb2-v4l2: [%p] %s: " fmt, \
+ (q)->name, __func__, ## arg); \
} while (0)
-/* Flags that are set by the vb2 core */
+/* Flags that are set by us */
#define V4L2_BUFFER_MASK_FLAGS (V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | \
V4L2_BUF_FLAG_DONE | V4L2_BUF_FLAG_ERROR | \
V4L2_BUF_FLAG_PREPARED | \
+ V4L2_BUF_FLAG_IN_REQUEST | \
+ V4L2_BUF_FLAG_REQUEST_FD | \
V4L2_BUF_FLAG_TIMESTAMP_MASK)
/* Output buffer flags that should be passed on to the driver */
-#define V4L2_BUFFER_OUT_FLAGS (V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_BFRAME | \
- V4L2_BUF_FLAG_KEYFRAME | V4L2_BUF_FLAG_TIMECODE)
+#define V4L2_BUFFER_OUT_FLAGS (V4L2_BUF_FLAG_PFRAME | \
+ V4L2_BUF_FLAG_BFRAME | \
+ V4L2_BUF_FLAG_KEYFRAME | \
+ V4L2_BUF_FLAG_TIMECODE | \
+ V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF)
/*
* __verify_planes_array() - verify that the planes array passed in struct
@@ -60,12 +68,14 @@
/* Is memory for copying plane information present? */
if (b->m.planes == NULL) {
- dprintk(1, "multi-planar buffer passed but planes array not provided\n");
+ dprintk(vb->vb2_queue, 1,
+ "multi-planar buffer passed but planes array not provided\n");
return -EINVAL;
}
if (b->length < vb->num_planes || b->length > VB2_MAX_PLANES) {
- dprintk(1, "incorrect planes array length, expected %d, got %d\n",
+ dprintk(vb->vb2_queue, 1,
+ "incorrect planes array length, expected %d, got %d\n",
vb->num_planes, b->length);
return -EINVAL;
}
@@ -88,7 +98,7 @@
unsigned int bytesused;
unsigned int plane;
- if (!V4L2_TYPE_IS_OUTPUT(b->type))
+ if (V4L2_TYPE_IS_CAPTURE(b->type))
return 0;
if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
@@ -118,6 +128,16 @@
return 0;
}
+/*
+ * __init_vb2_v4l2_buffer() - initialize the vb2_v4l2_buffer struct
+ */
+static void __init_vb2_v4l2_buffer(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+ vbuf->request_fd = -1;
+}
+
static void __copy_timestamp(struct vb2_buffer *vb, const void *pb)
{
const struct v4l2_buffer *b = pb;
@@ -130,7 +150,7 @@
* and the timecode field and flag if needed.
*/
if (q->copy_timestamp)
- vb->timestamp = timeval_to_ns(&b->timestamp);
+ vb->timestamp = v4l2_buffer_get_timestamp(b);
vbuf->flags |= b->flags & V4L2_BUF_FLAG_TIMECODE;
if (b->flags & V4L2_BUF_FLAG_TIMECODE)
vbuf->timecode = b->timecode;
@@ -151,6 +171,180 @@
pr_warn("use VIDIOC_DECODER_CMD(V4L2_DEC_CMD_STOP) instead.\n");
else
pr_warn("use the actual size instead.\n");
+}
+
+static int vb2_fill_vb2_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b)
+{
+ struct vb2_queue *q = vb->vb2_queue;
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vb2_plane *planes = vbuf->planes;
+ unsigned int plane;
+ int ret;
+
+ ret = __verify_length(vb, b);
+ if (ret < 0) {
+ dprintk(q, 1, "plane parameters verification failed: %d\n", ret);
+ return ret;
+ }
+ if (b->field == V4L2_FIELD_ALTERNATE && q->is_output) {
+ /*
+ * If the format's field is ALTERNATE, then the buffer's field
+ * should be either TOP or BOTTOM, not ALTERNATE since that
+ * makes no sense. The driver has to know whether the
+ * buffer represents a top or a bottom field in order to
+ * program any DMA correctly. Using ALTERNATE is wrong, since
+ * that just says that it is either a top or a bottom field,
+ * but not which of the two it is.
+ */
+ dprintk(q, 1, "the field is incorrectly set to ALTERNATE for an output buffer\n");
+ return -EINVAL;
+ }
+ vbuf->sequence = 0;
+ vbuf->request_fd = -1;
+ vbuf->is_held = false;
+
+ if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
+ switch (b->memory) {
+ case VB2_MEMORY_USERPTR:
+ for (plane = 0; plane < vb->num_planes; ++plane) {
+ planes[plane].m.userptr =
+ b->m.planes[plane].m.userptr;
+ planes[plane].length =
+ b->m.planes[plane].length;
+ }
+ break;
+ case VB2_MEMORY_DMABUF:
+ for (plane = 0; plane < vb->num_planes; ++plane) {
+ planes[plane].m.fd =
+ b->m.planes[plane].m.fd;
+ planes[plane].length =
+ b->m.planes[plane].length;
+ }
+ break;
+ default:
+ for (plane = 0; plane < vb->num_planes; ++plane) {
+ planes[plane].m.offset =
+ vb->planes[plane].m.offset;
+ planes[plane].length =
+ vb->planes[plane].length;
+ }
+ break;
+ }
+
+ /* Fill in driver-provided information for OUTPUT types */
+ if (V4L2_TYPE_IS_OUTPUT(b->type)) {
+ /*
+ * Will have to go up to b->length when API starts
+ * accepting variable number of planes.
+ *
+ * If bytesused == 0 for the output buffer, then fall
+ * back to the full buffer size. In that case
+ * userspace clearly never bothered to set it and
+ * it's a safe assumption that they really meant to
+ * use the full plane sizes.
+ *
+ * Some drivers, e.g. old codec drivers, use bytesused == 0
+ * as a way to indicate that streaming is finished.
+ * In that case, the driver should use the
+ * allow_zero_bytesused flag to keep old userspace
+ * applications working.
+ */
+ for (plane = 0; plane < vb->num_planes; ++plane) {
+ struct vb2_plane *pdst = &planes[plane];
+ struct v4l2_plane *psrc = &b->m.planes[plane];
+
+ if (psrc->bytesused == 0)
+ vb2_warn_zero_bytesused(vb);
+
+ if (vb->vb2_queue->allow_zero_bytesused)
+ pdst->bytesused = psrc->bytesused;
+ else
+ pdst->bytesused = psrc->bytesused ?
+ psrc->bytesused : pdst->length;
+ pdst->data_offset = psrc->data_offset;
+ }
+ }
+ } else {
+ /*
+ * Single-planar buffers do not use planes array,
+ * so fill in relevant v4l2_buffer struct fields instead.
+ * In videobuf we use our internal V4l2_planes struct for
+ * single-planar buffers as well, for simplicity.
+ *
+ * If bytesused == 0 for the output buffer, then fall back
+ * to the full buffer size as that's a sensible default.
+ *
+ * Some drivers, e.g. old codec drivers, use bytesused == 0 as
+ * a way to indicate that streaming is finished. In that case,
+ * the driver should use the allow_zero_bytesused flag to keep
+ * old userspace applications working.
+ */
+ switch (b->memory) {
+ case VB2_MEMORY_USERPTR:
+ planes[0].m.userptr = b->m.userptr;
+ planes[0].length = b->length;
+ break;
+ case VB2_MEMORY_DMABUF:
+ planes[0].m.fd = b->m.fd;
+ planes[0].length = b->length;
+ break;
+ default:
+ planes[0].m.offset = vb->planes[0].m.offset;
+ planes[0].length = vb->planes[0].length;
+ break;
+ }
+
+ planes[0].data_offset = 0;
+#if defined(CONFIG_ARCH_ROCKCHIP) && defined(CONFIG_COMPAT_32BIT_TIME) && \
+ IS_ENABLED(CONFIG_USB_F_UVC)
+ if (b->memory == VB2_MEMORY_DMABUF)
+ planes[0].data_offset = b->reserved2;
+#endif
+
+ if (V4L2_TYPE_IS_OUTPUT(b->type)) {
+ if (b->bytesused == 0)
+ vb2_warn_zero_bytesused(vb);
+
+ if (vb->vb2_queue->allow_zero_bytesused)
+ planes[0].bytesused = b->bytesused;
+ else
+ planes[0].bytesused = b->bytesused ?
+ b->bytesused : planes[0].length;
+ } else
+ planes[0].bytesused = 0;
+
+ }
+
+ /* Zero flags that we handle */
+ vbuf->flags = b->flags & ~V4L2_BUFFER_MASK_FLAGS;
+ if (!vb->vb2_queue->copy_timestamp || V4L2_TYPE_IS_CAPTURE(b->type)) {
+ /*
+ * Non-COPY timestamps and non-OUTPUT queues will get
+ * their timestamp and timestamp source flags from the
+ * queue.
+ */
+ vbuf->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
+ }
+
+ if (V4L2_TYPE_IS_OUTPUT(b->type)) {
+ /*
+ * For output buffers mask out the timecode flag:
+ * this will be handled later in vb2_qbuf().
+ * The 'field' is valid metadata for this output buffer
+ * and so that needs to be copied here.
+ */
+ vbuf->flags &= ~V4L2_BUF_FLAG_TIMECODE;
+ vbuf->field = b->field;
+ if (!(q->subsystem_flags & VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF))
+ vbuf->flags &= ~V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF;
+ } else {
+ /* Zero any output buffer flags as this is a capture buffer */
+ vbuf->flags &= ~V4L2_BUFFER_OUT_FLAGS;
+ /* Zero last flag, this is a signal from driver to userspace */
+ vbuf->flags &= ~V4L2_BUF_FLAG_LAST;
+ }
+
+ return 0;
}
static void set_buffer_cache_hints(struct vb2_queue *q,
@@ -200,33 +394,131 @@
vb->need_cache_sync_on_prepare = 0;
}
-static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b,
- const char *opname)
+static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
+ struct v4l2_buffer *b, bool is_prepare,
+ struct media_request **p_req)
{
+ const char *opname = is_prepare ? "prepare_buf" : "qbuf";
+ struct media_request *req;
+ struct vb2_v4l2_buffer *vbuf;
+ struct vb2_buffer *vb;
+ int ret;
+
if (b->type != q->type) {
- dprintk(1, "%s: invalid buffer type\n", opname);
+ dprintk(q, 1, "%s: invalid buffer type\n", opname);
return -EINVAL;
}
if (b->index >= q->num_buffers) {
- dprintk(1, "%s: buffer index out of range\n", opname);
+ dprintk(q, 1, "%s: buffer index out of range\n", opname);
return -EINVAL;
}
if (q->bufs[b->index] == NULL) {
/* Should never happen */
- dprintk(1, "%s: buffer is NULL\n", opname);
+ dprintk(q, 1, "%s: buffer is NULL\n", opname);
return -EINVAL;
}
if (b->memory != q->memory) {
- dprintk(1, "%s: invalid memory type\n", opname);
+ dprintk(q, 1, "%s: invalid memory type\n", opname);
return -EINVAL;
}
- set_buffer_cache_hints(q, q->bufs[b->index], b);
+ vb = q->bufs[b->index];
+ vbuf = to_vb2_v4l2_buffer(vb);
+ ret = __verify_planes_array(vb, b);
+ if (ret)
+ return ret;
- return __verify_planes_array(q->bufs[b->index], b);
+ if (!is_prepare && (b->flags & V4L2_BUF_FLAG_REQUEST_FD) &&
+ vb->state != VB2_BUF_STATE_DEQUEUED) {
+ dprintk(q, 1, "%s: buffer is not in dequeued state\n", opname);
+ return -EINVAL;
+ }
+
+ if (!vb->prepared) {
+ set_buffer_cache_hints(q, vb, b);
+ /* Copy relevant information provided by the userspace */
+ memset(vbuf->planes, 0,
+ sizeof(vbuf->planes[0]) * vb->num_planes);
+ ret = vb2_fill_vb2_v4l2_buffer(vb, b);
+ if (ret)
+ return ret;
+ }
+
+ if (is_prepare)
+ return 0;
+
+ if (!(b->flags & V4L2_BUF_FLAG_REQUEST_FD)) {
+ if (q->requires_requests) {
+ dprintk(q, 1, "%s: queue requires requests\n", opname);
+ return -EBADR;
+ }
+ if (q->uses_requests) {
+ dprintk(q, 1, "%s: queue uses requests\n", opname);
+ return -EBUSY;
+ }
+ return 0;
+ } else if (!q->supports_requests) {
+ dprintk(q, 1, "%s: queue does not support requests\n", opname);
+ return -EBADR;
+ } else if (q->uses_qbuf) {
+ dprintk(q, 1, "%s: queue does not use requests\n", opname);
+ return -EBUSY;
+ }
+
+ /*
+ * For proper locking when queueing a request you need to be able
+ * to lock access to the vb2 queue, so check that there is a lock
+ * that we can use. In addition p_req must be non-NULL.
+ */
+ if (WARN_ON(!q->lock || !p_req))
+ return -EINVAL;
+
+ /*
+ * Make sure this op is implemented by the driver. It's easy to forget
+ * this callback, but is it important when canceling a buffer in a
+ * queued request.
+ */
+ if (WARN_ON(!q->ops->buf_request_complete))
+ return -EINVAL;
+ /*
+ * Make sure this op is implemented by the driver for the output queue.
+ * It's easy to forget this callback, but is it important to correctly
+ * validate the 'field' value at QBUF time.
+ */
+ if (WARN_ON((q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
+ q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) &&
+ !q->ops->buf_out_validate))
+ return -EINVAL;
+
+ if (b->request_fd < 0) {
+ dprintk(q, 1, "%s: request_fd < 0\n", opname);
+ return -EINVAL;
+ }
+
+ req = media_request_get_by_fd(mdev, b->request_fd);
+ if (IS_ERR(req)) {
+ dprintk(q, 1, "%s: invalid request_fd\n", opname);
+ return PTR_ERR(req);
+ }
+
+ /*
+ * Early sanity check. This is checked again when the buffer
+ * is bound to the request in vb2_core_qbuf().
+ */
+ if (req->state != MEDIA_REQUEST_STATE_IDLE &&
+ req->state != MEDIA_REQUEST_STATE_UPDATING) {
+ dprintk(q, 1, "%s: request is not idle\n", opname);
+ media_request_put(req);
+ return -EBUSY;
+ }
+
+ *p_req = req;
+ vbuf->request_fd = b->request_fd;
+
+ return 0;
}
/*
@@ -248,11 +540,11 @@
b->flags = vbuf->flags;
b->field = vbuf->field;
- b->timestamp = ns_to_timeval(vb->timestamp);
+ v4l2_buffer_set_timestamp(b, vb->timestamp);
b->timecode = vbuf->timecode;
b->sequence = vbuf->sequence;
b->reserved2 = 0;
- b->reserved = 0;
+ b->request_fd = 0;
if (q->is_multiplanar) {
/*
@@ -309,29 +601,32 @@
case VB2_BUF_STATE_ACTIVE:
b->flags |= V4L2_BUF_FLAG_QUEUED;
break;
+ case VB2_BUF_STATE_IN_REQUEST:
+ b->flags |= V4L2_BUF_FLAG_IN_REQUEST;
+ break;
case VB2_BUF_STATE_ERROR:
b->flags |= V4L2_BUF_FLAG_ERROR;
- /* fall through */
+ fallthrough;
case VB2_BUF_STATE_DONE:
b->flags |= V4L2_BUF_FLAG_DONE;
break;
- case VB2_BUF_STATE_PREPARED:
- b->flags |= V4L2_BUF_FLAG_PREPARED;
- break;
case VB2_BUF_STATE_PREPARING:
case VB2_BUF_STATE_DEQUEUED:
- case VB2_BUF_STATE_REQUEUEING:
/* nothing */
break;
}
+ if ((vb->state == VB2_BUF_STATE_DEQUEUED ||
+ vb->state == VB2_BUF_STATE_IN_REQUEST) &&
+ vb->synced && vb->prepared)
+ b->flags |= V4L2_BUF_FLAG_PREPARED;
+
if (vb2_buffer_in_use(q, vb))
b->flags |= V4L2_BUF_FLAG_MAPPED;
-
- if (!q->is_output &&
- b->flags & V4L2_BUF_FLAG_DONE &&
- b->flags & V4L2_BUF_FLAG_LAST)
- q->last_buffer_dequeued = true;
+ if (vbuf->request_fd >= 0) {
+ b->flags |= V4L2_BUF_FLAG_REQUEST_FD;
+ b->request_fd = vbuf->request_fd;
+ }
}
/*
@@ -339,164 +634,45 @@
* v4l2_buffer by the userspace. It also verifies that struct
* v4l2_buffer has a valid number of planes.
*/
-static int __fill_vb2_buffer(struct vb2_buffer *vb,
- const void *pb, struct vb2_plane *planes)
+static int __fill_vb2_buffer(struct vb2_buffer *vb, struct vb2_plane *planes)
{
- struct vb2_queue *q = vb->vb2_queue;
- const struct v4l2_buffer *b = pb;
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
unsigned int plane;
- int ret;
- ret = __verify_length(vb, b);
- if (ret < 0) {
- dprintk(1, "plane parameters verification failed: %d\n", ret);
- return ret;
- }
- if (b->field == V4L2_FIELD_ALTERNATE && q->is_output) {
- /*
- * If the format's field is ALTERNATE, then the buffer's field
- * should be either TOP or BOTTOM, not ALTERNATE since that
- * makes no sense. The driver has to know whether the
- * buffer represents a top or a bottom field in order to
- * program any DMA correctly. Using ALTERNATE is wrong, since
- * that just says that it is either a top or a bottom field,
- * but not which of the two it is.
- */
- dprintk(1, "the field is incorrectly set to ALTERNATE for an output buffer\n");
- return -EINVAL;
- }
- vb->timestamp = 0;
- vbuf->sequence = 0;
+ if (!vb->vb2_queue->copy_timestamp)
+ vb->timestamp = 0;
- if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
- if (b->memory == VB2_MEMORY_USERPTR) {
- for (plane = 0; plane < vb->num_planes; ++plane) {
- planes[plane].m.userptr =
- b->m.planes[plane].m.userptr;
- planes[plane].length =
- b->m.planes[plane].length;
- }
+ for (plane = 0; plane < vb->num_planes; ++plane) {
+ if (vb->vb2_queue->memory != VB2_MEMORY_MMAP) {
+ planes[plane].m = vbuf->planes[plane].m;
+ planes[plane].length = vbuf->planes[plane].length;
}
- if (b->memory == VB2_MEMORY_DMABUF) {
- for (plane = 0; plane < vb->num_planes; ++plane) {
- planes[plane].m.fd =
- b->m.planes[plane].m.fd;
- planes[plane].length =
- b->m.planes[plane].length;
- }
- }
-
- /* Fill in driver-provided information for OUTPUT types */
- if (V4L2_TYPE_IS_OUTPUT(b->type)) {
- /*
- * Will have to go up to b->length when API starts
- * accepting variable number of planes.
- *
- * If bytesused == 0 for the output buffer, then fall
- * back to the full buffer size. In that case
- * userspace clearly never bothered to set it and
- * it's a safe assumption that they really meant to
- * use the full plane sizes.
- *
- * Some drivers, e.g. old codec drivers, use bytesused == 0
- * as a way to indicate that streaming is finished.
- * In that case, the driver should use the
- * allow_zero_bytesused flag to keep old userspace
- * applications working.
- */
- for (plane = 0; plane < vb->num_planes; ++plane) {
- struct vb2_plane *pdst = &planes[plane];
- struct v4l2_plane *psrc = &b->m.planes[plane];
-
- if (psrc->bytesused == 0)
- vb2_warn_zero_bytesused(vb);
-
- if (vb->vb2_queue->allow_zero_bytesused)
- pdst->bytesused = psrc->bytesused;
- else
- pdst->bytesused = psrc->bytesused ?
- psrc->bytesused : pdst->length;
- pdst->data_offset = psrc->data_offset;
- }
- }
- } else {
- /*
- * Single-planar buffers do not use planes array,
- * so fill in relevant v4l2_buffer struct fields instead.
- * In videobuf we use our internal V4l2_planes struct for
- * single-planar buffers as well, for simplicity.
- *
- * If bytesused == 0 for the output buffer, then fall back
- * to the full buffer size as that's a sensible default.
- *
- * Some drivers, e.g. old codec drivers, use bytesused == 0 as
- * a way to indicate that streaming is finished. In that case,
- * the driver should use the allow_zero_bytesused flag to keep
- * old userspace applications working.
- */
- if (b->memory == VB2_MEMORY_USERPTR) {
- planes[0].m.userptr = b->m.userptr;
- planes[0].length = b->length;
- }
-
- if (b->memory == VB2_MEMORY_DMABUF) {
- planes[0].m.fd = b->m.fd;
- planes[0].length = b->length;
- }
-
- if (V4L2_TYPE_IS_OUTPUT(b->type)) {
- if (b->bytesused == 0)
- vb2_warn_zero_bytesused(vb);
-
- if (vb->vb2_queue->allow_zero_bytesused)
- planes[0].bytesused = b->bytesused;
- else
- planes[0].bytesused = b->bytesused ?
- b->bytesused : planes[0].length;
- } else
- planes[0].bytesused = 0;
-
+ planes[plane].bytesused = vbuf->planes[plane].bytesused;
+ planes[plane].data_offset = vbuf->planes[plane].data_offset;
}
-
- /* Zero flags that the vb2 core handles */
- vbuf->flags = b->flags & ~V4L2_BUFFER_MASK_FLAGS;
- if (!vb->vb2_queue->copy_timestamp || !V4L2_TYPE_IS_OUTPUT(b->type)) {
- /*
- * Non-COPY timestamps and non-OUTPUT queues will get
- * their timestamp and timestamp source flags from the
- * queue.
- */
- vbuf->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
- }
-
- if (V4L2_TYPE_IS_OUTPUT(b->type)) {
- /*
- * For output buffers mask out the timecode flag:
- * this will be handled later in vb2_qbuf().
- * The 'field' is valid metadata for this output buffer
- * and so that needs to be copied here.
- */
- vbuf->flags &= ~V4L2_BUF_FLAG_TIMECODE;
- vbuf->field = b->field;
- /* get image sequence from user space */
- vbuf->sequence = b->sequence;
- } else {
- /* Zero any output buffer flags as this is a capture buffer */
- vbuf->flags &= ~V4L2_BUFFER_OUT_FLAGS;
- /* Zero last flag, this is a signal from driver to userspace */
- vbuf->flags &= ~V4L2_BUF_FLAG_LAST;
- }
-
return 0;
}
static const struct vb2_buf_ops v4l2_buf_ops = {
.verify_planes_array = __verify_planes_array_core,
+ .init_buffer = __init_vb2_v4l2_buffer,
.fill_user_buffer = __fill_v4l2_buffer,
.fill_vb2_buffer = __fill_vb2_buffer,
.copy_timestamp = __copy_timestamp,
};
+
+int vb2_find_timestamp(const struct vb2_queue *q, u64 timestamp,
+ unsigned int start_idx)
+{
+ unsigned int i;
+
+ for (i = start_idx; i < q->num_buffers; i++)
+ if (q->bufs[i]->copied_timestamp &&
+ q->bufs[i]->timestamp == timestamp)
+ return i;
+ return -1;
+}
+EXPORT_SYMBOL_GPL(vb2_find_timestamp);
/*
* vb2_querybuf() - query video buffer information
@@ -517,12 +693,12 @@
int ret;
if (b->type != q->type) {
- dprintk(1, "wrong buffer type\n");
+ dprintk(q, 1, "wrong buffer type\n");
return -EINVAL;
}
if (b->index >= q->num_buffers) {
- dprintk(1, "buffer index out of range\n");
+ dprintk(q, 1, "buffer index out of range\n");
return -EINVAL;
}
vb = q->bufs[b->index];
@@ -533,24 +709,48 @@
}
EXPORT_SYMBOL(vb2_querybuf);
+static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
+{
+ *caps = V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS;
+ if (q->io_modes & VB2_MMAP)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_MMAP;
+ if (q->io_modes & VB2_USERPTR)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_USERPTR;
+ if (q->io_modes & VB2_DMABUF)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_DMABUF;
+ if (q->subsystem_flags & VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF;
+ if (q->allow_cache_hints && q->io_modes & VB2_MMAP)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS;
+#ifdef CONFIG_MEDIA_CONTROLLER_REQUEST_API
+ if (q->supports_requests)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
+#endif
+}
+
int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req)
{
int ret = vb2_verify_memory_type(q, req->memory, req->type);
+ fill_buf_caps(q, &req->capabilities);
return ret ? ret : vb2_core_reqbufs(q, req->memory, &req->count);
}
EXPORT_SYMBOL_GPL(vb2_reqbufs);
-int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b)
+int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
+ struct v4l2_buffer *b)
{
int ret;
if (vb2_fileio_is_active(q)) {
- dprintk(1, "file io in progress\n");
+ dprintk(q, 1, "file io in progress\n");
return -EBUSY;
}
- ret = vb2_queue_or_prepare_buf(q, b, "prepare_buf");
+ if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
+ return -EINVAL;
+
+ ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
}
@@ -564,6 +764,7 @@
int ret = vb2_verify_memory_type(q, create->memory, f->type);
unsigned i;
+ fill_buf_caps(q, &create->capabilities);
create->index = q->num_buffers;
if (create->count == 0)
return ret != -EBUSY ? ret : 0;
@@ -607,21 +808,30 @@
if (requested_sizes[i] == 0)
return -EINVAL;
return ret ? ret : vb2_core_create_bufs(q, create->memory,
- &create->count, requested_planes, requested_sizes);
+ &create->count,
+ requested_planes,
+ requested_sizes);
}
EXPORT_SYMBOL_GPL(vb2_create_bufs);
-int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b)
+int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
+ struct v4l2_buffer *b)
{
+ struct media_request *req = NULL;
int ret;
if (vb2_fileio_is_active(q)) {
- dprintk(1, "file io in progress\n");
+ dprintk(q, 1, "file io in progress\n");
return -EBUSY;
}
- ret = vb2_queue_or_prepare_buf(q, b, "qbuf");
- return ret ? ret : vb2_core_qbuf(q, b->index, b);
+ ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
+ if (ret)
+ return ret;
+ ret = vb2_core_qbuf(q, b->index, b, req);
+ if (req)
+ media_request_put(req);
+ return ret;
}
EXPORT_SYMBOL_GPL(vb2_qbuf);
@@ -630,16 +840,21 @@
int ret;
if (vb2_fileio_is_active(q)) {
- dprintk(1, "file io in progress\n");
+ dprintk(q, 1, "file io in progress\n");
return -EBUSY;
}
if (b->type != q->type) {
- dprintk(1, "invalid buffer type\n");
+ dprintk(q, 1, "invalid buffer type\n");
return -EINVAL;
}
ret = vb2_core_dqbuf(q, NULL, b, nonblocking);
+
+ if (!q->is_output &&
+ b->flags & V4L2_BUF_FLAG_DONE &&
+ b->flags & V4L2_BUF_FLAG_LAST)
+ q->last_buffer_dequeued = true;
/*
* After calling the VIDIOC_DQBUF V4L2_BUF_FLAG_DONE must be
@@ -654,7 +869,7 @@
int vb2_streamon(struct vb2_queue *q, enum v4l2_buf_type type)
{
if (vb2_fileio_is_active(q)) {
- dprintk(1, "file io in progress\n");
+ dprintk(q, 1, "file io in progress\n");
return -EBUSY;
}
return vb2_core_streamon(q, type);
@@ -664,7 +879,7 @@
int vb2_streamoff(struct vb2_queue *q, enum v4l2_buf_type type)
{
if (vb2_fileio_is_active(q)) {
- dprintk(1, "file io in progress\n");
+ dprintk(q, 1, "file io in progress\n");
return -EBUSY;
}
return vb2_core_streamoff(q, type);
@@ -678,7 +893,7 @@
}
EXPORT_SYMBOL_GPL(vb2_expbuf);
-int vb2_queue_init(struct vb2_queue *q)
+int vb2_queue_init_name(struct vb2_queue *q, const char *name)
{
/*
* Sanity check
@@ -714,7 +929,18 @@
*/
q->quirk_poll_must_check_waiting_for_buffers = true;
+ if (name)
+ strscpy(q->name, name, sizeof(q->name));
+ else
+ q->name[0] = '\0';
+
return vb2_core_queue_init(q);
+}
+EXPORT_SYMBOL_GPL(vb2_queue_init_name);
+
+int vb2_queue_init(struct vb2_queue *q)
+{
+ return vb2_queue_init_name(q, NULL);
}
EXPORT_SYMBOL_GPL(vb2_queue_init);
@@ -727,19 +953,19 @@
__poll_t vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait)
{
struct video_device *vfd = video_devdata(file);
- __poll_t req_events = poll_requested_events(wait);
- __poll_t res = 0;
+ __poll_t res;
+
+ res = vb2_core_poll(q, file, wait);
if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
struct v4l2_fh *fh = file->private_data;
+ poll_wait(file, &fh->wait, wait);
if (v4l2_event_pending(fh))
- res = EPOLLPRI;
- else if (req_events & EPOLLPRI)
- poll_wait(file, &fh->wait, wait);
+ res |= EPOLLPRI;
}
- return res | vb2_core_poll(q, file, wait);
+ return res;
}
EXPORT_SYMBOL_GPL(vb2_poll);
@@ -765,6 +991,7 @@
struct video_device *vdev = video_devdata(file);
int res = vb2_verify_memory_type(vdev->queue, p->memory, p->type);
+ fill_buf_caps(vdev->queue, &p->capabilities);
if (res)
return res;
if (vb2_queue_is_busy(vdev, file))
@@ -786,6 +1013,7 @@
p->format.type);
p->index = vdev->queue->num_buffers;
+ fill_buf_caps(vdev->queue, &p->capabilities);
/*
* If count == 0, then just check if memory and type are valid.
* Any -EBUSY result from vb2_verify_memory_type can be mapped to 0.
@@ -811,7 +1039,7 @@
if (vb2_queue_is_busy(vdev, file))
return -EBUSY;
- return vb2_prepare_buf(vdev->queue, p);
+ return vb2_prepare_buf(vdev->queue, vdev->v4l2_dev->mdev, p);
}
EXPORT_SYMBOL_GPL(vb2_ioctl_prepare_buf);
@@ -830,7 +1058,7 @@
if (vb2_queue_is_busy(vdev, file))
return -EBUSY;
- return vb2_qbuf(vdev->queue, p);
+ return vb2_qbuf(vdev->queue, vdev->v4l2_dev->mdev, p);
}
EXPORT_SYMBOL_GPL(vb2_ioctl_qbuf);
@@ -998,6 +1226,44 @@
EXPORT_SYMBOL_GPL(vb2_fop_get_unmapped_area);
#endif
+void vb2_video_unregister_device(struct video_device *vdev)
+{
+ /* Check if vdev was ever registered at all */
+ if (!vdev || !video_is_registered(vdev))
+ return;
+
+ /*
+ * Calling this function only makes sense if vdev->queue is set.
+ * If it is NULL, then just call video_unregister_device() instead.
+ */
+ WARN_ON(!vdev->queue);
+
+ /*
+ * Take a reference to the device since video_unregister_device()
+ * calls device_unregister(), but we don't want that to release
+ * the device since we want to clean up the queue first.
+ */
+ get_device(&vdev->dev);
+ video_unregister_device(vdev);
+ if (vdev->queue && vdev->queue->owner) {
+ struct mutex *lock = vdev->queue->lock ?
+ vdev->queue->lock : vdev->lock;
+
+ if (lock)
+ mutex_lock(lock);
+ vb2_queue_release(vdev->queue);
+ vdev->queue->owner = NULL;
+ if (lock)
+ mutex_unlock(lock);
+ }
+ /*
+ * Now we put the device, and in most cases this will release
+ * everything.
+ */
+ put_device(&vdev->dev);
+}
+EXPORT_SYMBOL_GPL(vb2_video_unregister_device);
+
/* vb2_ops helpers. Only use if vq->lock is non-NULL. */
void vb2_ops_wait_prepare(struct vb2_queue *vq)
@@ -1012,6 +1278,57 @@
}
EXPORT_SYMBOL_GPL(vb2_ops_wait_finish);
+/*
+ * Note that this function is called during validation time and
+ * thus the req_queue_mutex is held to ensure no request objects
+ * can be added or deleted while validating. So there is no need
+ * to protect the objects list.
+ */
+int vb2_request_validate(struct media_request *req)
+{
+ struct media_request_object *obj;
+ int ret = 0;
+
+ if (!vb2_request_buffer_cnt(req))
+ return -ENOENT;
+
+ list_for_each_entry(obj, &req->objects, list) {
+ if (!obj->ops->prepare)
+ continue;
+
+ ret = obj->ops->prepare(obj);
+ if (ret)
+ break;
+ }
+
+ if (ret) {
+ list_for_each_entry_continue_reverse(obj, &req->objects, list)
+ if (obj->ops->unprepare)
+ obj->ops->unprepare(obj);
+ return ret;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(vb2_request_validate);
+
+void vb2_request_queue(struct media_request *req)
+{
+ struct media_request_object *obj, *obj_safe;
+
+ /*
+ * Queue all objects. Note that buffer objects are at the end of the
+ * objects list, after all other object types. Once buffer objects
+ * are queued, the driver might delete them immediately (if the driver
+ * processes the buffer at once), so we have to use
+ * list_for_each_entry_safe() to handle the case where the object we
+ * queue is deleted.
+ */
+ list_for_each_entry_safe(obj, obj_safe, &req->objects, list)
+ if (obj->ops->queue)
+ obj->ops->queue(obj);
+}
+EXPORT_SYMBOL_GPL(vb2_request_queue);
+
MODULE_DESCRIPTION("Driver helper framework for Video for Linux 2");
MODULE_AUTHOR("Pawel Osciak <pawel@osciak.com>, Marek Szyprowski");
MODULE_LICENSE("GPL");
--
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