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[media] stk-webcam: add support for control events and prio handling

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Also correct the first_init static: this should be part of the stk_camera struct.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Arvydas Sidorenko <asido4@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-02-04 09:08:41 -03:00 committed by Mauro Carvalho Chehab
parent 10351adc6a
commit 89ea47069c
2 changed files with 18 additions and 10 deletions
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27
drivers/media/usb/stkwebcam/stk-webcam.c
View File

@ -35,6 +35,7 @@
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include "stk-webcam.h"
@ -603,20 +604,21 @@ static void stk_free_buffers(struct stk_camera *dev)
static int v4l_stk_open(struct file *fp)
{
static int first_init = 1; /* webcam LED management */
struct stk_camera *dev = video_drvdata(fp);
int err;
if (dev == NULL || !is_present(dev))
return -ENXIO;
if (!first_init)
if (!dev->first_init)
stk_camera_write_reg(dev, 0x0, 0x24);
else
first_init = 0;
dev->first_init = 0;
usb_autopm_get_interface(dev->interface);
return 0;
err = v4l2_fh_open(fp);
if (!err)
usb_autopm_get_interface(dev->interface);
return err;
}
static int v4l_stk_release(struct file *fp)
@ -633,8 +635,7 @@ static int v4l_stk_release(struct file *fp)
if (is_present(dev))
usb_autopm_put_interface(dev->interface);
return 0;
return v4l2_fh_release(fp);
}
static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
@ -701,6 +702,7 @@ static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
{
struct stk_camera *dev = video_drvdata(fp);
unsigned res = v4l2_ctrl_poll(fp, wait);
poll_wait(fp, &dev->wait_frame, wait);
@ -708,9 +710,9 @@ static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
return POLLERR;
if (!list_empty(&dev->sio_full))
return POLLIN | POLLRDNORM;
return res | POLLIN | POLLRDNORM;
return 0;
return res;
}
@ -1190,6 +1192,9 @@ static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = {
.vidioc_streamoff = stk_vidioc_streamoff,
.vidioc_g_parm = stk_vidioc_g_parm,
.vidioc_enum_framesizes = stk_vidioc_enum_framesizes,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static void stk_v4l_dev_release(struct video_device *vd)
@ -1217,6 +1222,7 @@ static int stk_register_video_device(struct stk_camera *dev)
dev->vdev = stk_v4l_data;
dev->vdev.debug = debug;
dev->vdev.v4l2_dev = &dev->v4l2_dev;
set_bit(V4L2_FL_USE_FH_PRIO, &dev->vdev.flags);
video_set_drvdata(&dev->vdev, dev);
err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
if (err)
@ -1270,6 +1276,7 @@ static int stk_camera_probe(struct usb_interface *interface,
spin_lock_init(&dev->spinlock);
init_waitqueue_head(&dev->wait_frame);
dev->first_init = 1; /* webcam LED management */
dev->udev = udev;
dev->interface = interface;

1
drivers/media/usb/stkwebcam/stk-webcam.h
View File

@ -99,6 +99,7 @@ struct stk_camera {
struct usb_interface *interface;
int webcam_model;
struct file *owner;
int first_init;
u8 isoc_ep;