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[media] zr364xx: add support for control events 

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-06-02 07:57:29 -03:00 committed by Mauro Carvalho Chehab
parent df462902ea
commit 5d317abe7b
1 changed files with 18 additions and 27 deletions
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45
drivers/media/video/zr364xx.c
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@ -39,6 +39,8 @@
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-event.h>
#include <media/videobuf-vmalloc.h>
@ -195,7 +197,6 @@ struct zr364xx_camera {
const struct zr364xx_fmt *fmt;
struct videobuf_queue vb_vidq;
enum v4l2_buf_type type;
};
/* buffer for one video frame */
@ -473,8 +474,7 @@ static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t count,
if (mutex_lock_interruptible(&cam->lock))
return -ERESTARTSYS;
if (cam->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
zr364xx_vidioc_streamon(file, cam, cam->type) == 0) {
if (zr364xx_vidioc_streamon(file, cam, V4L2_BUF_TYPE_VIDEO_CAPTURE) == 0) {
DBG("%s: reading %d bytes at pos %d.\n", __func__, (int) count,
(int) *ppos);
@ -1146,14 +1146,8 @@ static int zr364xx_vidioc_streamon(struct file *file, void *priv,
DBG("%s\n", __func__);
if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
dev_err(&cam->udev->dev, "invalid fh type0\n");
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
}
if (cam->type != type) {
dev_err(&cam->udev->dev, "invalid fh type1\n");
return -EINVAL;
}
if (!res_get(cam)) {
dev_err(&cam->udev->dev, "stream busy\n");
@ -1183,14 +1177,8 @@ static int zr364xx_vidioc_streamoff(struct file *file, void *priv,
struct zr364xx_camera *cam = video_drvdata(file);
DBG("%s\n", __func__);
if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
dev_err(&cam->udev->dev, "invalid fh type0\n");
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
}
if (cam->type != type) {
dev_err(&cam->udev->dev, "invalid fh type1\n");
return -EINVAL;
}
zr364xx_stop_acquire(cam);
res = videobuf_streamoff(&cam->vb_vidq);
if (res < 0)
@ -1203,7 +1191,6 @@ static int zr364xx_vidioc_streamoff(struct file *file, void *priv,
/* open the camera */
static int zr364xx_open(struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct zr364xx_camera *cam = video_drvdata(file);
struct usb_device *udev = cam->udev;
int i, err;
@ -1218,6 +1205,10 @@ static int zr364xx_open(struct file *file)
goto out;
}
err = v4l2_fh_open(file);
if (err)
goto out;
for (i = 0; init[cam->method][i].size != -1; i++) {
err =
send_control_msg(udev, 1, init[cam->method][i].value,
@ -1226,19 +1217,18 @@ static int zr364xx_open(struct file *file)
if (err < 0) {
dev_err(&cam->udev->dev,
"error during open sequence: %d\n", i);
v4l2_fh_release(file);
goto out;
}
}
cam->skip = 2;
cam->users++;
file->private_data = vdev;
cam->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cam->fmt = formats;
videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops,
NULL, &cam->slock,
cam->type,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_NONE,
sizeof(struct zr364xx_buffer), cam, &cam->lock);
@ -1301,7 +1291,6 @@ static int zr364xx_close(struct file *file)
}
cam->users--;
file->private_data = NULL;
for (i = 0; i < 2; i++) {
send_control_msg(udev, 1, init[cam->method][i].value,
@ -1314,7 +1303,7 @@ static int zr364xx_close(struct file *file)
*/
mdelay(100);
mutex_unlock(&cam->lock);
return 0;
return v4l2_fh_release(file);
}
@ -1342,12 +1331,11 @@ static unsigned int zr364xx_poll(struct file *file,
{
struct zr364xx_camera *cam = video_drvdata(file);
struct videobuf_queue *q = &cam->vb_vidq;
unsigned res = v4l2_ctrl_poll(file, wait);
_DBG("%s\n", __func__);
if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return POLLERR;
return videobuf_poll_stream(file, q, wait);
return res | videobuf_poll_stream(file, q, wait);
}
static const struct v4l2_ctrl_ops zr364xx_ctrl_ops = {
@ -1379,6 +1367,9 @@ static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = {
.vidioc_querybuf = zr364xx_vidioc_querybuf,
.vidioc_qbuf = zr364xx_vidioc_qbuf,
.vidioc_dqbuf = zr364xx_vidioc_dqbuf,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device zr364xx_template = {