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authorVaibhav Hiremath <hvaibhav@ti.com>2010-03-27 13:37:23 +0100
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-05-18 05:52:46 +0200
commit844cc0dcb588ee7005c70cffd92ee7a0c1270729 (patch)
tree9e615ab60bc715182f858c137798200b2fbf9f05 /drivers/media/video/davinci/vpfe_capture.c
parentV4L/DVB: V4L: dm644x_ccdc: Add Suspend/Resume Support (diff)
downloadlinux-844cc0dcb588ee7005c70cffd92ee7a0c1270729.tar.xz
linux-844cc0dcb588ee7005c70cffd92ee7a0c1270729.zip
V4L/DVB: V4L: vpfe_capture: Add support for USERPTR mode of operation
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Signed-off-by: Muralidharan Karicheri <mkaricheri@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to '')
-rw-r--r--drivers/media/video/davinci/vpfe_capture.c42
1 files changed, 28 insertions, 14 deletions
diff --git a/drivers/media/video/davinci/vpfe_capture.c b/drivers/media/video/davinci/vpfe_capture.c
index 2b906753f13c..d4676ad41f39 100644
--- a/drivers/media/video/davinci/vpfe_capture.c
+++ b/drivers/media/video/davinci/vpfe_capture.c
@@ -539,6 +539,16 @@ static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev)
list_del(&vpfe_dev->next_frm->queue);
vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE;
addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
+
+ ccdc_dev->hw_ops.setfbaddr(addr);
+}
+
+static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev)
+{
+ unsigned long addr;
+
+ addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
+ addr += vpfe_dev->field_off;
ccdc_dev->hw_ops.setfbaddr(addr);
}
@@ -559,7 +569,6 @@ static irqreturn_t vpfe_isr(int irq, void *dev_id)
{
struct vpfe_device *vpfe_dev = dev_id;
enum v4l2_field field;
- unsigned long addr;
int fid;
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n");
@@ -604,10 +613,7 @@ static irqreturn_t vpfe_isr(int irq, void *dev_id)
* the CCDC memory address
*/
if (field == V4L2_FIELD_SEQ_TB) {
- addr =
- videobuf_to_dma_contig(vpfe_dev->cur_frm);
- addr += vpfe_dev->field_off;
- ccdc_dev->hw_ops.setfbaddr(addr);
+ vpfe_schedule_bottom_field(vpfe_dev);
}
goto clear_intr;
}
@@ -1234,7 +1240,10 @@ static int vpfe_videobuf_setup(struct videobuf_queue *vq,
struct vpfe_device *vpfe_dev = fh->vpfe_dev;
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
- *size = config_params.device_bufsize;
+ *size = vpfe_dev->fmt.fmt.pix.sizeimage;
+ if (vpfe_dev->memory == V4L2_MEMORY_MMAP &&
+ vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize)
+ *size = config_params.device_bufsize;
if (*count < config_params.min_numbuffers)
*count = config_params.min_numbuffers;
@@ -1249,6 +1258,8 @@ static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
{
struct vpfe_fh *fh = vq->priv_data;
struct vpfe_device *vpfe_dev = fh->vpfe_dev;
+ unsigned long addr;
+ int ret;
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n");
@@ -1258,8 +1269,18 @@ static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
vb->height = vpfe_dev->fmt.fmt.pix.height;
vb->size = vpfe_dev->fmt.fmt.pix.sizeimage;
vb->field = field;
+
+ ret = videobuf_iolock(vq, vb, NULL);;
+ if (ret < 0)
+ return ret;
+
+ addr = videobuf_to_dma_contig(vb);
+ /* Make sure user addresses are aligned to 32 bytes */
+ if (!ALIGN(addr, 32))
+ return -EINVAL;
+
+ vb->state = VIDEOBUF_PREPARED;
}
- vb->state = VIDEOBUF_PREPARED;
return 0;
}
@@ -1327,13 +1348,6 @@ static int vpfe_reqbufs(struct file *file, void *priv,
return -EINVAL;
}
- if (V4L2_MEMORY_USERPTR == req_buf->memory) {
- /* we don't support user ptr IO */
- v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs:"
- " USERPTR IO not supported\n");
- return -EINVAL;
- }
-
ret = mutex_lock_interruptible(&vpfe_dev->lock);
if (ret)
return ret;