Merge branch 'next' (accumulated 3.16 merge window patches) into master

Now that 3.15 is released, this merges the 'next' branch into 'master',
bringing us to the normal situation where my 'master' branch is the
merge window.

* accumulated work in next: (6809 commits)
  ufs: sb mutex merge + mutex_destroy
  powerpc: update comments for generic idle conversion
  cris: update comments for generic idle conversion
  idle: remove cpu_idle() forward declarations
  nbd: zero from and len fields in NBD_CMD_DISCONNECT.
  mm: convert some level-less printks to pr_*
  MAINTAINERS: adi-buildroot-devel is moderated
  MAINTAINERS: add linux-api for review of API/ABI changes
  mm/kmemleak-test.c: use pr_fmt for logging
  fs/dlm/debug_fs.c: replace seq_printf by seq_puts
  fs/dlm/lockspace.c: convert simple_str to kstr
  fs/dlm/config.c: convert simple_str to kstr
  mm: mark remap_file_pages() syscall as deprecated
  mm: memcontrol: remove unnecessary memcg argument from soft limit functions
  mm: memcontrol: clean up memcg zoneinfo lookup
  mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
  mm/mempool.c: update the kmemleak stack trace for mempool allocations
  lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
  mm: introduce kmemleak_update_trace()
  mm/kmemleak.c: use %u to print ->checksum
  ...

1 files changed, 108 insertions, 83 deletions

diff --git a/drivers/media/pci/saa7134/saa7134-ts.c b/drivers/media/pci/saa7134/saa7134-ts.c
index 2e3f4b412d8c..bd25323bd947 100644
--- a/drivers/media/pci/saa7134/saa7134-ts.c
+++ b/drivers/media/pci/saa7134/saa7134-ts.c
@@ -39,26 +39,29 @@ MODULE_PARM_DESC(ts_debug,"enable debug messages [ts]");
 	printk(KERN_DEBUG "%s/ts: " fmt, dev->name , ## arg)
 
 /* ------------------------------------------------------------------ */
-
 static int buffer_activate(struct saa7134_dev *dev,
 			   struct saa7134_buf *buf,
 			   struct saa7134_buf *next)
 {
 
 	dprintk("buffer_activate [%p]",buf);
-	buf->vb.state = VIDEOBUF_ACTIVE;
 	buf->top_seen = 0;
 
+	if (!dev->ts_started)
+		dev->ts_field = V4L2_FIELD_TOP;
+
 	if (NULL == next)
 		next = buf;
-	if (V4L2_FIELD_TOP == buf->vb.field) {
+	if (V4L2_FIELD_TOP == dev->ts_field) {
 		dprintk("- [top]     buf=%p next=%p\n",buf,next);
 		saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(buf));
 		saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(next));
+		dev->ts_field = V4L2_FIELD_BOTTOM;
 	} else {
 		dprintk("- [bottom]  buf=%p next=%p\n",buf,next);
 		saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(next));
 		saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(buf));
+		dev->ts_field = V4L2_FIELD_TOP;
 	}
 
 	/* start DMA */
@@ -72,96 +75,123 @@ static int buffer_activate(struct saa7134_dev *dev,
 	return 0;
 }
 
-static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
-		enum v4l2_field field)
+int saa7134_ts_buffer_init(struct vb2_buffer *vb2)
 {
-	struct saa7134_dev *dev = q->priv_data;
-	struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
+	struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
+	struct saa7134_buf *buf = container_of(vb2, struct saa7134_buf, vb2);
+
+	dmaq->curr = NULL;
+	buf->activate = buffer_activate;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(saa7134_ts_buffer_init);
+
+int saa7134_ts_buffer_prepare(struct vb2_buffer *vb2)
+{
+	struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
+	struct saa7134_dev *dev = dmaq->dev;
+	struct saa7134_buf *buf = container_of(vb2, struct saa7134_buf, vb2);
+	struct sg_table *dma = vb2_dma_sg_plane_desc(vb2, 0);
 	unsigned int lines, llength, size;
-	int err;
+	int ret;
 
-	dprintk("buffer_prepare [%p,%s]\n",buf,v4l2_field_names[field]);
+	dprintk("buffer_prepare [%p]\n", buf);
 
 	llength = TS_PACKET_SIZE;
 	lines = dev->ts.nr_packets;
 
 	size = lines * llength;
-	if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
+	if (vb2_plane_size(vb2, 0) < size)
 		return -EINVAL;
 
-	if (buf->vb.size != size) {
-		saa7134_dma_free(q,buf);
-	}
-
-	if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
-
-		struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
-
-		dprintk("buffer_prepare: needs_init\n");
-
-		buf->vb.width  = llength;
-		buf->vb.height = lines;
-		buf->vb.size   = size;
-		buf->pt        = &dev->ts.pt_ts;
-
-		err = videobuf_iolock(q,&buf->vb,NULL);
-		if (err)
-			goto oops;
-		err = saa7134_pgtable_build(dev->pci,buf->pt,
-					    dma->sglist,
-					    dma->sglen,
-					    saa7134_buffer_startpage(buf));
-		if (err)
-			goto oops;
-	}
-
-	buf->vb.state = VIDEOBUF_PREPARED;
-	buf->activate = buffer_activate;
-	buf->vb.field = field;
-	return 0;
+	vb2_set_plane_payload(vb2, 0, size);
+	vb2->v4l2_buf.field = dev->field;
 
- oops:
-	saa7134_dma_free(q,buf);
-	return err;
+	ret = dma_map_sg(&dev->pci->dev, dma->sgl, dma->nents, DMA_FROM_DEVICE);
+	if (!ret)
+		return -EIO;
+	return saa7134_pgtable_build(dev->pci, &dmaq->pt, dma->sgl, dma->nents,
+				    saa7134_buffer_startpage(buf));
 }
+EXPORT_SYMBOL_GPL(saa7134_ts_buffer_prepare);
 
-static int
-buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
+void saa7134_ts_buffer_finish(struct vb2_buffer *vb2)
 {
-	struct saa7134_dev *dev = q->priv_data;
+	struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
+	struct saa7134_dev *dev = dmaq->dev;
+	struct saa7134_buf *buf = container_of(vb2, struct saa7134_buf, vb2);
+	struct sg_table *dma = vb2_dma_sg_plane_desc(&buf->vb2, 0);
 
-	*size = TS_PACKET_SIZE * dev->ts.nr_packets;
-	if (0 == *count)
-		*count = dev->ts.nr_bufs;
-	*count = saa7134_buffer_count(*size,*count);
+	dma_unmap_sg(&dev->pci->dev, dma->sgl, dma->nents, DMA_FROM_DEVICE);
+}
+EXPORT_SYMBOL_GPL(saa7134_ts_buffer_finish);
 
+int saa7134_ts_queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
+			   unsigned int *nbuffers, unsigned int *nplanes,
+			   unsigned int sizes[], void *alloc_ctxs[])
+{
+	struct saa7134_dmaqueue *dmaq = q->drv_priv;
+	struct saa7134_dev *dev = dmaq->dev;
+	int size = TS_PACKET_SIZE * dev->ts.nr_packets;
+
+	if (0 == *nbuffers)
+		*nbuffers = dev->ts.nr_bufs;
+	*nbuffers = saa7134_buffer_count(size, *nbuffers);
+	if (*nbuffers < 3)
+		*nbuffers = 3;
+	*nplanes = 1;
+	sizes[0] = size;
 	return 0;
 }
+EXPORT_SYMBOL_GPL(saa7134_ts_queue_setup);
 
-static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
+int saa7134_ts_start_streaming(struct vb2_queue *vq, unsigned int count)
 {
-	struct saa7134_dev *dev = q->priv_data;
-	struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
-
-	saa7134_buffer_queue(dev,&dev->ts_q,buf);
+	struct saa7134_dmaqueue *dmaq = vq->drv_priv;
+	struct saa7134_dev *dev = dmaq->dev;
+
+	/*
+	 * Planar video capture and TS share the same DMA channel,
+	 * so only one can be active at a time.
+	 */
+	if (vb2_is_busy(&dev->video_vbq) && dev->fmt->planar) {
+		struct saa7134_buf *buf, *tmp;
+
+		list_for_each_entry_safe(buf, tmp, &dmaq->queue, entry) {
+			list_del(&buf->entry);
+			vb2_buffer_done(&buf->vb2, VB2_BUF_STATE_QUEUED);
+		}
+		if (dmaq->curr) {
+			vb2_buffer_done(&dmaq->curr->vb2, VB2_BUF_STATE_QUEUED);
+			dmaq->curr = NULL;
+		}
+		return -EBUSY;
+	}
+	dmaq->seq_nr = 0;
+	return 0;
 }
+EXPORT_SYMBOL_GPL(saa7134_ts_start_streaming);
 
-static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
+void saa7134_ts_stop_streaming(struct vb2_queue *vq)
 {
-	struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
-	struct saa7134_dev *dev = q->priv_data;
-
-	if (dev->ts_started)
-		saa7134_ts_stop(dev);
+	struct saa7134_dmaqueue *dmaq = vq->drv_priv;
+	struct saa7134_dev *dev = dmaq->dev;
 
-	saa7134_dma_free(q,buf);
+	saa7134_ts_stop(dev);
+	saa7134_stop_streaming(dev, dmaq);
 }
-
-struct videobuf_queue_ops saa7134_ts_qops = {
-	.buf_setup    = buffer_setup,
-	.buf_prepare  = buffer_prepare,
-	.buf_queue    = buffer_queue,
-	.buf_release  = buffer_release,
+EXPORT_SYMBOL_GPL(saa7134_ts_stop_streaming);
+
+struct vb2_ops saa7134_ts_qops = {
+	.queue_setup	= saa7134_ts_queue_setup,
+	.buf_init	= saa7134_ts_buffer_init,
+	.buf_prepare	= saa7134_ts_buffer_prepare,
+	.buf_finish	= saa7134_ts_buffer_finish,
+	.buf_queue	= saa7134_vb2_buffer_queue,
+	.wait_prepare	= vb2_ops_wait_prepare,
+	.wait_finish	= vb2_ops_wait_finish,
+	.stop_streaming = saa7134_ts_stop_streaming,
 };
 EXPORT_SYMBOL_GPL(saa7134_ts_qops);
 
@@ -213,7 +243,7 @@ int saa7134_ts_init1(struct saa7134_dev *dev)
 	dev->ts_q.dev              = dev;
 	dev->ts_q.need_two         = 1;
 	dev->ts_started            = 0;
-	saa7134_pgtable_alloc(dev->pci,&dev->ts.pt_ts);
+	saa7134_pgtable_alloc(dev->pci, &dev->ts_q.pt);
 
 	/* init TS hw */
 	saa7134_ts_init_hw(dev);
@@ -226,7 +256,8 @@ int saa7134_ts_stop(struct saa7134_dev *dev)
 {
 	dprintk("TS stop\n");
 
-	BUG_ON(!dev->ts_started);
+	if (!dev->ts_started)
+		return 0;
 
 	/* Stop TS stream */
 	switch (saa7134_boards[dev->board].ts_type) {
@@ -247,7 +278,8 @@ int saa7134_ts_start(struct saa7134_dev *dev)
 {
 	dprintk("TS start\n");
 
-	BUG_ON(dev->ts_started);
+	if (WARN_ON(dev->ts_started))
+		return 0;
 
 	/* dma: setup channel 5 (= TS) */
 	saa_writeb(SAA7134_TS_DMA0, (dev->ts.nr_packets - 1) & 0xff);
@@ -259,7 +291,7 @@ int saa7134_ts_start(struct saa7134_dev *dev)
 	saa_writel(SAA7134_RS_PITCH(5), TS_PACKET_SIZE);
 	saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_16 |
 					  SAA7134_RS_CONTROL_ME |
-					  (dev->ts.pt_ts.dma >> 12));
+					  (dev->ts_q.pt.dma >> 12));
 
 	/* reset hardware TS buffers */
 	saa_writeb(SAA7134_TS_SERIAL1, 0x00);
@@ -293,7 +325,7 @@ int saa7134_ts_start(struct saa7134_dev *dev)
 
 int saa7134_ts_fini(struct saa7134_dev *dev)
 {
-	saa7134_pgtable_free(dev->pci,&dev->ts.pt_ts);
+	saa7134_pgtable_free(dev->pci, &dev->ts_q.pt);
 	return 0;
 }
 
@@ -303,25 +335,18 @@ void saa7134_irq_ts_done(struct saa7134_dev *dev, unsigned long status)
 
 	spin_lock(&dev->slock);
 	if (dev->ts_q.curr) {
-		field = dev->ts_q.curr->vb.field;
-		if (field == V4L2_FIELD_TOP) {
+		field = dev->ts_field;
+		if (field != V4L2_FIELD_TOP) {
 			if ((status & 0x100000) != 0x000000)
 				goto done;
 		} else {
 			if ((status & 0x100000) != 0x100000)
 				goto done;
 		}
-		saa7134_buffer_finish(dev,&dev->ts_q,VIDEOBUF_DONE);
+		saa7134_buffer_finish(dev, &dev->ts_q, VB2_BUF_STATE_DONE);
 	}
 	saa7134_buffer_next(dev,&dev->ts_q);
 
  done:
 	spin_unlock(&dev->slock);
 }
-
-/* ----------------------------------------------------------- */
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */