* source and destination.
*
* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
- * Pawel Osciak, <p.osciak@samsung.com>
+ * Pawel Osciak, <pawel@osciak.com>
* Marek Szyprowski, <m.szyprowski@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
#include <linux/sched.h>
#include <linux/slab.h>
-#include <media/videobuf-core.h>
+#include <media/videobuf2-core.h>
#include <media/v4l2-mem2mem.h>
MODULE_DESCRIPTION("Mem to mem device framework for videobuf");
-MODULE_AUTHOR("Pawel Osciak, <p.osciak@samsung.com>");
+MODULE_AUTHOR("Pawel Osciak, <pawel@osciak.com>");
MODULE_LICENSE("GPL");
static bool debug;
static struct v4l2_m2m_queue_ctx *get_queue_ctx(struct v4l2_m2m_ctx *m2m_ctx,
enum v4l2_buf_type type)
{
- switch (type) {
- case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- return &m2m_ctx->cap_q_ctx;
- case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (V4L2_TYPE_IS_OUTPUT(type))
return &m2m_ctx->out_q_ctx;
- default:
- printk(KERN_ERR "Invalid buffer type\n");
- return NULL;
- }
+ else
+ return &m2m_ctx->cap_q_ctx;
}
/**
- * v4l2_m2m_get_vq() - return videobuf_queue for the given type
+ * v4l2_m2m_get_vq() - return vb2_queue for the given type
*/
-struct videobuf_queue *v4l2_m2m_get_vq(struct v4l2_m2m_ctx *m2m_ctx,
+struct vb2_queue *v4l2_m2m_get_vq(struct v4l2_m2m_ctx *m2m_ctx,
enum v4l2_buf_type type)
{
struct v4l2_m2m_queue_ctx *q_ctx;
/**
* v4l2_m2m_next_buf() - return next buffer from the list of ready buffers
*/
-void *v4l2_m2m_next_buf(struct v4l2_m2m_ctx *m2m_ctx, enum v4l2_buf_type type)
+void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx)
{
- struct v4l2_m2m_queue_ctx *q_ctx;
- struct videobuf_buffer *vb = NULL;
+ struct v4l2_m2m_buffer *b = NULL;
unsigned long flags;
- q_ctx = get_queue_ctx(m2m_ctx, type);
- if (!q_ctx)
- return NULL;
-
- spin_lock_irqsave(q_ctx->q.irqlock, flags);
+ spin_lock_irqsave(&q_ctx->rdy_spinlock, flags);
- if (list_empty(&q_ctx->rdy_queue))
- goto end;
-
- vb = list_entry(q_ctx->rdy_queue.next, struct videobuf_buffer, queue);
- vb->state = VIDEOBUF_ACTIVE;
+ if (list_empty(&q_ctx->rdy_queue)) {
+ spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
+ return NULL;
+ }
-end:
- spin_unlock_irqrestore(q_ctx->q.irqlock, flags);
- return vb;
+ b = list_entry(q_ctx->rdy_queue.next, struct v4l2_m2m_buffer, list);
+ spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
+ return &b->vb;
}
EXPORT_SYMBOL_GPL(v4l2_m2m_next_buf);
* v4l2_m2m_buf_remove() - take off a buffer from the list of ready buffers and
* return it
*/
-void *v4l2_m2m_buf_remove(struct v4l2_m2m_ctx *m2m_ctx, enum v4l2_buf_type type)
+void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx)
{
- struct v4l2_m2m_queue_ctx *q_ctx;
- struct videobuf_buffer *vb = NULL;
+ struct v4l2_m2m_buffer *b = NULL;
unsigned long flags;
- q_ctx = get_queue_ctx(m2m_ctx, type);
- if (!q_ctx)
+ spin_lock_irqsave(&q_ctx->rdy_spinlock, flags);
+ if (list_empty(&q_ctx->rdy_queue)) {
+ spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
return NULL;
-
- spin_lock_irqsave(q_ctx->q.irqlock, flags);
- if (!list_empty(&q_ctx->rdy_queue)) {
- vb = list_entry(q_ctx->rdy_queue.next, struct videobuf_buffer,
- queue);
- list_del(&vb->queue);
- q_ctx->num_rdy--;
}
- spin_unlock_irqrestore(q_ctx->q.irqlock, flags);
+ b = list_entry(q_ctx->rdy_queue.next, struct v4l2_m2m_buffer, list);
+ list_del(&b->list);
+ q_ctx->num_rdy--;
+ spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
- return vb;
+ return &b->vb;
}
EXPORT_SYMBOL_GPL(v4l2_m2m_buf_remove);
return;
}
- spin_lock_irqsave(m2m_ctx->out_q_ctx.q.irqlock, flags);
+ spin_lock_irqsave(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
if (list_empty(&m2m_ctx->out_q_ctx.rdy_queue)) {
- spin_unlock_irqrestore(m2m_ctx->out_q_ctx.q.irqlock, flags);
+ spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
dprintk("No input buffers available\n");
return;
}
if (list_empty(&m2m_ctx->cap_q_ctx.rdy_queue)) {
- spin_unlock_irqrestore(m2m_ctx->out_q_ctx.q.irqlock, flags);
+ spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
dprintk("No output buffers available\n");
return;
}
- spin_unlock_irqrestore(m2m_ctx->out_q_ctx.q.irqlock, flags);
+ spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
if (m2m_dev->m2m_ops->job_ready
&& (!m2m_dev->m2m_ops->job_ready(m2m_ctx->priv))) {
list_del(&m2m_dev->curr_ctx->queue);
m2m_dev->curr_ctx->job_flags &= ~(TRANS_QUEUED | TRANS_RUNNING);
+ wake_up(&m2m_dev->curr_ctx->finished);
m2m_dev->curr_ctx = NULL;
spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
int v4l2_m2m_reqbufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_requestbuffers *reqbufs)
{
- struct videobuf_queue *vq;
+ struct vb2_queue *vq;
vq = v4l2_m2m_get_vq(m2m_ctx, reqbufs->type);
- return videobuf_reqbufs(vq, reqbufs);
+ return vb2_reqbufs(vq, reqbufs);
}
EXPORT_SYMBOL_GPL(v4l2_m2m_reqbufs);
int v4l2_m2m_querybuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_buffer *buf)
{
- struct videobuf_queue *vq;
- int ret;
+ struct vb2_queue *vq;
+ int ret = 0;
+ unsigned int i;
vq = v4l2_m2m_get_vq(m2m_ctx, buf->type);
- ret = videobuf_querybuf(vq, buf);
-
- if (buf->memory == V4L2_MEMORY_MMAP
- && vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- buf->m.offset += DST_QUEUE_OFF_BASE;
+ ret = vb2_querybuf(vq, buf);
+
+ /* Adjust MMAP memory offsets for the CAPTURE queue */
+ if (buf->memory == V4L2_MEMORY_MMAP && !V4L2_TYPE_IS_OUTPUT(vq->type)) {
+ if (V4L2_TYPE_IS_MULTIPLANAR(vq->type)) {
+ for (i = 0; i < buf->length; ++i)
+ buf->m.planes[i].m.mem_offset
+ += DST_QUEUE_OFF_BASE;
+ } else {
+ buf->m.offset += DST_QUEUE_OFF_BASE;
+ }
}
return ret;
int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_buffer *buf)
{
- struct videobuf_queue *vq;
+ struct vb2_queue *vq;
int ret;
vq = v4l2_m2m_get_vq(m2m_ctx, buf->type);
- ret = videobuf_qbuf(vq, buf);
+ ret = vb2_qbuf(vq, buf);
if (!ret)
v4l2_m2m_try_schedule(m2m_ctx);
int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_buffer *buf)
{
- struct videobuf_queue *vq;
+ struct vb2_queue *vq;
vq = v4l2_m2m_get_vq(m2m_ctx, buf->type);
- return videobuf_dqbuf(vq, buf, file->f_flags & O_NONBLOCK);
+ return vb2_dqbuf(vq, buf, file->f_flags & O_NONBLOCK);
}
EXPORT_SYMBOL_GPL(v4l2_m2m_dqbuf);
int v4l2_m2m_streamon(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
enum v4l2_buf_type type)
{
- struct videobuf_queue *vq;
+ struct vb2_queue *vq;
int ret;
vq = v4l2_m2m_get_vq(m2m_ctx, type);
- ret = videobuf_streamon(vq);
+ ret = vb2_streamon(vq, type);
if (!ret)
v4l2_m2m_try_schedule(m2m_ctx);
int v4l2_m2m_streamoff(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
enum v4l2_buf_type type)
{
- struct videobuf_queue *vq;
+ struct vb2_queue *vq;
vq = v4l2_m2m_get_vq(m2m_ctx, type);
- return videobuf_streamoff(vq);
+ return vb2_streamoff(vq, type);
}
EXPORT_SYMBOL_GPL(v4l2_m2m_streamoff);
unsigned int v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct poll_table_struct *wait)
{
- struct videobuf_queue *src_q, *dst_q;
- struct videobuf_buffer *src_vb = NULL, *dst_vb = NULL;
+ struct vb2_queue *src_q, *dst_q;
+ struct vb2_buffer *src_vb = NULL, *dst_vb = NULL;
unsigned int rc = 0;
+ unsigned long flags;
src_q = v4l2_m2m_get_src_vq(m2m_ctx);
dst_q = v4l2_m2m_get_dst_vq(m2m_ctx);
- videobuf_queue_lock(src_q);
- videobuf_queue_lock(dst_q);
-
- if (src_q->streaming && !list_empty(&src_q->stream))
- src_vb = list_first_entry(&src_q->stream,
- struct videobuf_buffer, stream);
- if (dst_q->streaming && !list_empty(&dst_q->stream))
- dst_vb = list_first_entry(&dst_q->stream,
- struct videobuf_buffer, stream);
-
- if (!src_vb && !dst_vb) {
+ /*
+ * There has to be at least one buffer queued on each queued_list, which
+ * means either in driver already or waiting for driver to claim it
+ * and start processing.
+ */
+ if ((!src_q->streaming || list_empty(&src_q->queued_list))
+ && (!dst_q->streaming || list_empty(&dst_q->queued_list))) {
rc = POLLERR;
goto end;
}
- if (src_vb) {
- poll_wait(file, &src_vb->done, wait);
- if (src_vb->state == VIDEOBUF_DONE
- || src_vb->state == VIDEOBUF_ERROR)
- rc |= POLLOUT | POLLWRNORM;
- }
- if (dst_vb) {
- poll_wait(file, &dst_vb->done, wait);
- if (dst_vb->state == VIDEOBUF_DONE
- || dst_vb->state == VIDEOBUF_ERROR)
- rc |= POLLIN | POLLRDNORM;
- }
+ if (m2m_ctx->m2m_dev->m2m_ops->unlock)
+ m2m_ctx->m2m_dev->m2m_ops->unlock(m2m_ctx->priv);
+
+ poll_wait(file, &src_q->done_wq, wait);
+ poll_wait(file, &dst_q->done_wq, wait);
+
+ if (m2m_ctx->m2m_dev->m2m_ops->lock)
+ m2m_ctx->m2m_dev->m2m_ops->lock(m2m_ctx->priv);
+
+ spin_lock_irqsave(&src_q->done_lock, flags);
+ if (!list_empty(&src_q->done_list))
+ src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer,
+ done_entry);
+ if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE
+ || src_vb->state == VB2_BUF_STATE_ERROR))
+ rc |= POLLOUT | POLLWRNORM;
+ spin_unlock_irqrestore(&src_q->done_lock, flags);
+
+ spin_lock_irqsave(&dst_q->done_lock, flags);
+ if (!list_empty(&dst_q->done_list))
+ dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer,
+ done_entry);
+ if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE
+ || dst_vb->state == VB2_BUF_STATE_ERROR))
+ rc |= POLLIN | POLLRDNORM;
+ spin_unlock_irqrestore(&dst_q->done_lock, flags);
end:
- videobuf_queue_unlock(dst_q);
- videobuf_queue_unlock(src_q);
return rc;
}
EXPORT_SYMBOL_GPL(v4l2_m2m_poll);
struct vm_area_struct *vma)
{
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
- struct videobuf_queue *vq;
+ struct vb2_queue *vq;
if (offset < DST_QUEUE_OFF_BASE) {
vq = v4l2_m2m_get_src_vq(m2m_ctx);
vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT);
}
- return videobuf_mmap_mapper(vq, vma);
+ return vb2_mmap(vq, vma);
}
EXPORT_SYMBOL(v4l2_m2m_mmap);
*
* Usually called from driver's open() function.
*/
-struct v4l2_m2m_ctx *v4l2_m2m_ctx_init(void *priv, struct v4l2_m2m_dev *m2m_dev,
- void (*vq_init)(void *priv, struct videobuf_queue *,
- enum v4l2_buf_type))
+struct v4l2_m2m_ctx *v4l2_m2m_ctx_init(struct v4l2_m2m_dev *m2m_dev,
+ void *drv_priv,
+ int (*queue_init)(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq))
{
struct v4l2_m2m_ctx *m2m_ctx;
struct v4l2_m2m_queue_ctx *out_q_ctx, *cap_q_ctx;
-
- if (!vq_init)
- return ERR_PTR(-EINVAL);
+ int ret;
m2m_ctx = kzalloc(sizeof *m2m_ctx, GFP_KERNEL);
if (!m2m_ctx)
return ERR_PTR(-ENOMEM);
- m2m_ctx->priv = priv;
+ m2m_ctx->priv = drv_priv;
m2m_ctx->m2m_dev = m2m_dev;
+ init_waitqueue_head(&m2m_ctx->finished);
- out_q_ctx = get_queue_ctx(m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
- cap_q_ctx = get_queue_ctx(m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ out_q_ctx = &m2m_ctx->out_q_ctx;
+ cap_q_ctx = &m2m_ctx->cap_q_ctx;
INIT_LIST_HEAD(&out_q_ctx->rdy_queue);
INIT_LIST_HEAD(&cap_q_ctx->rdy_queue);
+ spin_lock_init(&out_q_ctx->rdy_spinlock);
+ spin_lock_init(&cap_q_ctx->rdy_spinlock);
INIT_LIST_HEAD(&m2m_ctx->queue);
- vq_init(priv, &out_q_ctx->q, V4L2_BUF_TYPE_VIDEO_OUTPUT);
- vq_init(priv, &cap_q_ctx->q, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- out_q_ctx->q.priv_data = cap_q_ctx->q.priv_data = priv;
+ ret = queue_init(drv_priv, &out_q_ctx->q, &cap_q_ctx->q);
+
+ if (ret)
+ goto err;
return m2m_ctx;
+err:
+ kfree(m2m_ctx);
+ return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(v4l2_m2m_ctx_init);
void v4l2_m2m_ctx_release(struct v4l2_m2m_ctx *m2m_ctx)
{
struct v4l2_m2m_dev *m2m_dev;
- struct videobuf_buffer *vb;
unsigned long flags;
m2m_dev = m2m_ctx->m2m_dev;
spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
m2m_dev->m2m_ops->job_abort(m2m_ctx->priv);
dprintk("m2m_ctx %p running, will wait to complete", m2m_ctx);
- vb = v4l2_m2m_next_dst_buf(m2m_ctx);
- BUG_ON(NULL == vb);
- wait_event(vb->done, vb->state != VIDEOBUF_ACTIVE
- && vb->state != VIDEOBUF_QUEUED);
+ wait_event(m2m_ctx->finished, !(m2m_ctx->job_flags & TRANS_RUNNING));
} else if (m2m_ctx->job_flags & TRANS_QUEUED) {
list_del(&m2m_ctx->queue);
m2m_ctx->job_flags &= ~(TRANS_QUEUED | TRANS_RUNNING);
spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
}
- videobuf_stop(&m2m_ctx->cap_q_ctx.q);
- videobuf_stop(&m2m_ctx->out_q_ctx.q);
-
- videobuf_mmap_free(&m2m_ctx->cap_q_ctx.q);
- videobuf_mmap_free(&m2m_ctx->out_q_ctx.q);
+ vb2_queue_release(&m2m_ctx->cap_q_ctx.q);
+ vb2_queue_release(&m2m_ctx->out_q_ctx.q);
kfree(m2m_ctx);
}
* v4l2_m2m_buf_queue() - add a buffer to the proper ready buffers list.
*
* Call from buf_queue(), videobuf_queue_ops callback.
- *
- * Locking: Caller holds q->irqlock (taken by videobuf before calling buf_queue
- * callback in the driver).
*/
-void v4l2_m2m_buf_queue(struct v4l2_m2m_ctx *m2m_ctx, struct videobuf_queue *vq,
- struct videobuf_buffer *vb)
+void v4l2_m2m_buf_queue(struct v4l2_m2m_ctx *m2m_ctx, struct vb2_buffer *vb)
{
+ struct v4l2_m2m_buffer *b = container_of(vb, struct v4l2_m2m_buffer, vb);
struct v4l2_m2m_queue_ctx *q_ctx;
+ unsigned long flags;
- q_ctx = get_queue_ctx(m2m_ctx, vq->type);
+ q_ctx = get_queue_ctx(m2m_ctx, vb->vb2_queue->type);
if (!q_ctx)
return;
- list_add_tail(&vb->queue, &q_ctx->rdy_queue);
+ spin_lock_irqsave(&q_ctx->rdy_spinlock, flags);
+ list_add_tail(&b->list, &q_ctx->rdy_queue);
q_ctx->num_rdy++;
-
- vb->state = VIDEOBUF_QUEUED;
+ spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags);
}
EXPORT_SYMBOL_GPL(v4l2_m2m_buf_queue);
projects / karo-tx-linux.git / blobdiff