[media] cx88: add missing alloc_ctx support

The cx88 vb2 conversion and the vb2 dma_sg improvements were developed separately and
were merged separately. Unfortunately, the patch updating drivers to the dma_sg
improvements didn't take the updated cx88 driver into account. Basically two ships
passing in the night, unaware of one another even though both ships have the same
owner, i.e. me :-)

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Chris Lee <updatelee@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/pci/cx88/cx88-blackbird.c b/drivers/media/pci/cx88/cx88-blackbird.c
index 4160ca4e541344f9b4f8f49f2eeab24dc57db4f0..d3c79d964f2cda152691302eb462939aed59e870 100644 (file)
--- a/drivers/media/pci/cx88/cx88-blackbird.c
+++ b/drivers/media/pci/cx88/cx88-blackbird.c
@@ -647,6 +647,7 @@ static int queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
        dev->ts_packet_size  = 188 * 4;
        dev->ts_packet_count  = 32;
        sizes[0] = dev->ts_packet_size * dev->ts_packet_count;
+       alloc_ctxs[0] = dev->alloc_ctx;
        return 0;
 }
 
@@ -662,14 +663,11 @@ static void buffer_finish(struct vb2_buffer *vb)
 {
        struct cx8802_dev *dev = vb->vb2_queue->drv_priv;
        struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
-       struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
        struct cx88_riscmem *risc = &buf->risc;
 
        if (risc->cpu)
                pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
        memset(risc, 0, sizeof(*risc));
-
-       dma_unmap_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
 }
 
 static void buffer_queue(struct vb2_buffer *vb)

diff --git a/drivers/media/pci/cx88/cx88-dvb.c b/drivers/media/pci/cx88/cx88-dvb.c
index c344bfd0b8961909ff4586e8c5f87dcd3d7af6a3..5780e2f013b4972e6677d66b221952485ddf7262 100644 (file)
--- a/drivers/media/pci/cx88/cx88-dvb.c
+++ b/drivers/media/pci/cx88/cx88-dvb.c
@@ -92,6 +92,7 @@ static int queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
        dev->ts_packet_size  = 188 * 4;
        dev->ts_packet_count = dvb_buf_tscnt;
        sizes[0] = dev->ts_packet_size * dev->ts_packet_count;
+       alloc_ctxs[0] = dev->alloc_ctx;
        *num_buffers = dvb_buf_tscnt;
        return 0;
 }
@@ -108,14 +109,11 @@ static void buffer_finish(struct vb2_buffer *vb)
 {
        struct cx8802_dev *dev = vb->vb2_queue->drv_priv;
        struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
-       struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
        struct cx88_riscmem *risc = &buf->risc;
 
        if (risc->cpu)
                pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
        memset(risc, 0, sizeof(*risc));
-
-       dma_unmap_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
 }
 
 static void buffer_queue(struct vb2_buffer *vb)

diff --git a/drivers/media/pci/cx88/cx88-mpeg.c b/drivers/media/pci/cx88/cx88-mpeg.c
index f181a3a10389c9bb0021c7d2bb7284959b3190aa..1c1f69e6b0b9177b7bed4f13f640d7466c742dfd 100644 (file)
--- a/drivers/media/pci/cx88/cx88-mpeg.c
+++ b/drivers/media/pci/cx88/cx88-mpeg.c
@@ -235,10 +235,6 @@ int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev,
                return -EINVAL;
        vb2_set_plane_payload(&buf->vb, 0, size);
 
-       rc = dma_map_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
-       if (!rc)
-               return -EIO;
-
        rc = cx88_risc_databuffer(dev->pci, risc, sgt->sgl,
                             dev->ts_packet_size, dev->ts_packet_count, 0);
        if (rc) {
@@ -733,6 +729,11 @@ static int cx8802_probe(struct pci_dev *pci_dev,
        if (NULL == dev)
                goto fail_core;
        dev->pci = pci_dev;
+       dev->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev);
+       if (IS_ERR(dev->alloc_ctx)) {
+               err = PTR_ERR(dev->alloc_ctx);
+               goto fail_core;
+       }
        dev->core = core;
 
        /* Maintain a reference so cx88-video can query the 8802 device. */
@@ -752,6 +753,7 @@ static int cx8802_probe(struct pci_dev *pci_dev,
        return 0;
 
  fail_free:
+       vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
        kfree(dev);
  fail_core:
        core->dvbdev = NULL;
@@ -798,6 +800,7 @@ static void cx8802_remove(struct pci_dev *pci_dev)
        /* common */
        cx8802_fini_common(dev);
        cx88_core_put(dev->core,dev->pci);
+       vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
        kfree(dev);
 }
 

diff --git a/drivers/media/pci/cx88/cx88-vbi.c b/drivers/media/pci/cx88/cx88-vbi.c
index 6ab6e27648f638fcf49ca48a603b5b324125aeef..32eb7fdb875e294268bedf94f265d9ac48a41ab3 100644 (file)
--- a/drivers/media/pci/cx88/cx88-vbi.c
+++ b/drivers/media/pci/cx88/cx88-vbi.c
@@ -120,6 +120,7 @@ static int queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
                sizes[0] = VBI_LINE_NTSC_COUNT * VBI_LINE_LENGTH * 2;
        else
                sizes[0] = VBI_LINE_PAL_COUNT * VBI_LINE_LENGTH * 2;
+       alloc_ctxs[0] = dev->alloc_ctx;
        return 0;
 }
 
@@ -131,7 +132,6 @@ static int buffer_prepare(struct vb2_buffer *vb)
        struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
        unsigned int lines;
        unsigned int size;
-       int rc;
 
        if (dev->core->tvnorm & V4L2_STD_525_60)
                lines = VBI_LINE_NTSC_COUNT;
@@ -142,10 +142,6 @@ static int buffer_prepare(struct vb2_buffer *vb)
                return -EINVAL;
        vb2_set_plane_payload(vb, 0, size);
 
-       rc = dma_map_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
-       if (!rc)
-               return -EIO;
-
        cx88_risc_buffer(dev->pci, &buf->risc, sgt->sgl,
                         0, VBI_LINE_LENGTH * lines,
                         VBI_LINE_LENGTH, 0,
@@ -157,14 +153,11 @@ static void buffer_finish(struct vb2_buffer *vb)
 {
        struct cx8800_dev *dev = vb->vb2_queue->drv_priv;
        struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
-       struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
        struct cx88_riscmem *risc = &buf->risc;
 
        if (risc->cpu)
                pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
        memset(risc, 0, sizeof(*risc));
-
-       dma_unmap_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
 }
 
 static void buffer_queue(struct vb2_buffer *vb)

diff --git a/drivers/media/pci/cx88/cx88-video.c b/drivers/media/pci/cx88/cx88-video.c
index a64ae31ae142b2a3e9542b65a45f393c29d77b82..25a4b7f3188a2e624be1d76cf257b9118bcd0580 100644 (file)
--- a/drivers/media/pci/cx88/cx88-video.c
+++ b/drivers/media/pci/cx88/cx88-video.c
@@ -440,6 +440,7 @@ static int queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
 
        *num_planes = 1;
        sizes[0] = (dev->fmt->depth * core->width * core->height) >> 3;
+       alloc_ctxs[0] = dev->alloc_ctx;
        return 0;
 }
 
@@ -449,7 +450,6 @@ static int buffer_prepare(struct vb2_buffer *vb)
        struct cx88_core *core = dev->core;
        struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
        struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
-       int rc;
 
        buf->bpl = core->width * dev->fmt->depth >> 3;
 
@@ -457,10 +457,6 @@ static int buffer_prepare(struct vb2_buffer *vb)
                return -EINVAL;
        vb2_set_plane_payload(vb, 0, core->height * buf->bpl);
 
-       rc = dma_map_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
-       if (!rc)
-               return -EIO;
-
        switch (core->field) {
        case V4L2_FIELD_TOP:
                cx88_risc_buffer(dev->pci, &buf->risc,
@@ -505,14 +501,11 @@ static void buffer_finish(struct vb2_buffer *vb)
 {
        struct cx8800_dev *dev = vb->vb2_queue->drv_priv;
        struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
-       struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
        struct cx88_riscmem *risc = &buf->risc;
 
        if (risc->cpu)
                pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
        memset(risc, 0, sizeof(*risc));
-
-       dma_unmap_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
 }
 
 static void buffer_queue(struct vb2_buffer *vb)
@@ -1345,6 +1338,12 @@ static int cx8800_initdev(struct pci_dev *pci_dev,
                err = -EIO;
                goto fail_core;
        }
+       dev->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev);
+       if (IS_ERR(dev->alloc_ctx)) {
+               err = PTR_ERR(dev->alloc_ctx);
+               goto fail_core;
+       }
+
 
        /* initialize driver struct */
        spin_lock_init(&dev->slock);
@@ -1549,6 +1548,7 @@ fail_unreg:
        free_irq(pci_dev->irq, dev);
        mutex_unlock(&core->lock);
 fail_core:
+       vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
        core->v4ldev = NULL;
        cx88_core_put(core,dev->pci);
 fail_free:
@@ -1582,6 +1582,7 @@ static void cx8800_finidev(struct pci_dev *pci_dev)
 
        /* free memory */
        cx88_core_put(core,dev->pci);
+       vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
        kfree(dev);
 }
 

diff --git a/drivers/media/pci/cx88/cx88.h b/drivers/media/pci/cx88/cx88.h
index 3b0ae754f16588b86ab8695aabeedbd9aa3795fd..7748ca9abb09c31a462d9450aea1f6a06e1af19c 100644 (file)
--- a/drivers/media/pci/cx88/cx88.h
+++ b/drivers/media/pci/cx88/cx88.h
@@ -485,6 +485,7 @@ struct cx8800_dev {
        /* pci i/o */
        struct pci_dev             *pci;
        unsigned char              pci_rev,pci_lat;
+       void                       *alloc_ctx;
 
        const struct cx8800_fmt    *fmt;
 
@@ -548,6 +549,7 @@ struct cx8802_dev {
        /* pci i/o */
        struct pci_dev             *pci;
        unsigned char              pci_rev,pci_lat;
+       void                       *alloc_ctx;
 
        /* dma queues */
        struct cx88_dmaqueue       mpegq;