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[media] media: davinci: vpif_display: use vb2_fop_mmap/poll 

No need to reinvent the wheel. Just use the already existing
functions for that.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Lad, Prabhakar 2014-05-16 10:33:14 -03:00 committed by Mauro Carvalho Chehab
parent 58334b0078
commit 4be2153cf7
1 changed files with 7 additions and 42 deletions
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49
drivers/media/platform/davinci/vpif_display.c
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@ -645,44 +645,6 @@ static void vpif_config_addr(struct channel_obj *ch, int muxmode)
}
}
/*
* vpif_mmap: It is used to map kernel space buffers into user spaces
*/
static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
{
struct vpif_fh *fh = filep->private_data;
struct channel_obj *ch = fh->channel;
struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
int ret;
vpif_dbg(2, debug, "vpif_mmap\n");
if (mutex_lock_interruptible(&common->lock))
return -ERESTARTSYS;
ret = vb2_mmap(&common->buffer_queue, vma);
mutex_unlock(&common->lock);
return ret;
}
/*
* vpif_poll: It is used for select/poll system call
*/
static unsigned int vpif_poll(struct file *filep, poll_table *wait)
{
struct vpif_fh *fh = filep->private_data;
struct channel_obj *ch = fh->channel;
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
unsigned int res = 0;
if (common->started) {
mutex_lock(&common->lock);
res = vb2_poll(&common->buffer_queue, filep, wait);
mutex_unlock(&common->lock);
}
return res;
}
/*
* vpif_open: It creates object of file handle structure and stores it in
* private_data member of filepointer
@ -1463,8 +1425,8 @@ static const struct v4l2_file_operations vpif_fops = {
.open = vpif_open,
.release = vpif_release,
.unlocked_ioctl = video_ioctl2,
.mmap = vpif_mmap,
.poll = vpif_poll
.mmap = vb2_fop_mmap,
.poll = vb2_fop_poll
};
static struct video_device vpif_video_template = {
@ -1555,6 +1517,7 @@ static int vpif_async_bound(struct v4l2_async_notifier *notifier,
static int vpif_probe_complete(void)
{
struct common_obj *common;
struct video_device *vdev;
struct channel_obj *ch;
struct vb2_queue *q;
int j, err, k;
@ -1636,8 +1599,10 @@ static int vpif_probe_complete(void)
vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n",
(int)ch, (int)&ch->video_dev);
err = video_register_device(ch->video_dev,
VFL_TYPE_GRABBER, (j ? 3 : 2));
vdev = ch->video_dev;
vdev->queue = q;
err = video_register_device(vdev, VFL_TYPE_GRABBER,
(j ? 3 : 2));
if (err < 0)
goto probe_out;
}