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path: root/drivers/media/video/pwc/pwc-v4l.c
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Diffstat (limited to 'drivers/media/video/pwc/pwc-v4l.c')
-rw-r--r--drivers/media/video/pwc/pwc-v4l.c145
1 files changed, 71 insertions, 74 deletions
diff --git a/drivers/media/video/pwc/pwc-v4l.c b/drivers/media/video/pwc/pwc-v4l.c
index 2834e3e65b39..c691e29cc36e 100644
--- a/drivers/media/video/pwc/pwc-v4l.c
+++ b/drivers/media/video/pwc/pwc-v4l.c
@@ -464,26 +464,24 @@ static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
struct pwc_device *pdev = video_drvdata(file);
int ret, pixelformat, compression = 0;
- if (pwc_test_n_set_capt_file(pdev, file))
- return -EBUSY;
-
ret = pwc_vidioc_try_fmt(pdev, f);
if (ret < 0)
return ret;
- pixelformat = f->fmt.pix.pixelformat;
+ if (mutex_lock_interruptible(&pdev->vb_queue_lock))
+ return -ERESTARTSYS;
- mutex_lock(&pdev->udevlock);
- if (!pdev->udev) {
- ret = -ENODEV;
+ ret = pwc_test_n_set_capt_file(pdev, file);
+ if (ret)
goto leave;
- }
- if (pdev->iso_init) {
+ if (pdev->vb_queue.streaming) {
ret = -EBUSY;
goto leave;
}
+ pixelformat = f->fmt.pix.pixelformat;
+
PWC_DEBUG_IOCTL("Trying to set format to: width=%d height=%d fps=%d "
"format=%c%c%c%c\n",
f->fmt.pix.width, f->fmt.pix.height, pdev->vframes,
@@ -499,7 +497,7 @@ static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt);
leave:
- mutex_unlock(&pdev->udevlock);
+ mutex_unlock(&pdev->vb_queue_lock);
return ret;
}
@@ -507,9 +505,6 @@ static int pwc_querycap(struct file *file, void *fh, struct v4l2_capability *cap
{
struct pwc_device *pdev = video_drvdata(file);
- if (!pdev->udev)
- return -ENODEV;
-
strcpy(cap->driver, PWC_NAME);
strlcpy(cap->card, pdev->vdev.name, sizeof(cap->card));
usb_make_path(pdev->udev, cap->bus_info, sizeof(cap->bus_info));
@@ -540,15 +535,12 @@ static int pwc_s_input(struct file *file, void *fh, unsigned int i)
return i ? -EINVAL : 0;
}
-static int pwc_g_volatile_ctrl_unlocked(struct v4l2_ctrl *ctrl)
+static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct pwc_device *pdev =
container_of(ctrl->handler, struct pwc_device, ctrl_handler);
int ret = 0;
- if (!pdev->udev)
- return -ENODEV;
-
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
if (pdev->color_bal_valid &&
@@ -615,18 +607,6 @@ static int pwc_g_volatile_ctrl_unlocked(struct v4l2_ctrl *ctrl)
return ret;
}
-static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct pwc_device *pdev =
- container_of(ctrl->handler, struct pwc_device, ctrl_handler);
- int ret;
-
- mutex_lock(&pdev->udevlock);
- ret = pwc_g_volatile_ctrl_unlocked(ctrl);
- mutex_unlock(&pdev->udevlock);
- return ret;
-}
-
static int pwc_set_awb(struct pwc_device *pdev)
{
int ret;
@@ -648,7 +628,7 @@ static int pwc_set_awb(struct pwc_device *pdev)
if (pdev->auto_white_balance->val == awb_indoor ||
pdev->auto_white_balance->val == awb_outdoor ||
pdev->auto_white_balance->val == awb_fl)
- pwc_g_volatile_ctrl_unlocked(pdev->auto_white_balance);
+ pwc_g_volatile_ctrl(pdev->auto_white_balance);
}
if (pdev->auto_white_balance->val != awb_manual)
return 0;
@@ -812,13 +792,6 @@ static int pwc_s_ctrl(struct v4l2_ctrl *ctrl)
container_of(ctrl->handler, struct pwc_device, ctrl_handler);
int ret = 0;
- mutex_lock(&pdev->udevlock);
-
- if (!pdev->udev) {
- ret = -ENODEV;
- goto leave;
- }
-
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
@@ -915,8 +888,6 @@ static int pwc_s_ctrl(struct v4l2_ctrl *ctrl)
if (ret)
PWC_ERROR("s_ctrl %s error %d\n", ctrl->name, ret);
-leave:
- mutex_unlock(&pdev->udevlock);
return ret;
}
@@ -949,11 +920,9 @@ static int pwc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- mutex_lock(&pdev->udevlock); /* To avoid race with s_fmt */
PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n",
pdev->width, pdev->height);
pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt);
- mutex_unlock(&pdev->udevlock);
return 0;
}
@@ -968,70 +937,98 @@ static int pwc_reqbufs(struct file *file, void *fh,
struct v4l2_requestbuffers *rb)
{
struct pwc_device *pdev = video_drvdata(file);
+ int ret;
- if (pwc_test_n_set_capt_file(pdev, file))
- return -EBUSY;
+ if (mutex_lock_interruptible(&pdev->vb_queue_lock))
+ return -ERESTARTSYS;
- return vb2_reqbufs(&pdev->vb_queue, rb);
+ ret = pwc_test_n_set_capt_file(pdev, file);
+ if (ret == 0)
+ ret = vb2_reqbufs(&pdev->vb_queue, rb);
+
+ mutex_unlock(&pdev->vb_queue_lock);
+ return ret;
}
static int pwc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf)
{
struct pwc_device *pdev = video_drvdata(file);
+ int ret;
- return vb2_querybuf(&pdev->vb_queue, buf);
+ if (mutex_lock_interruptible(&pdev->vb_queue_lock))
+ return -ERESTARTSYS;
+
+ ret = pwc_test_n_set_capt_file(pdev, file);
+ if (ret == 0)
+ ret = vb2_querybuf(&pdev->vb_queue, buf);
+
+ mutex_unlock(&pdev->vb_queue_lock);
+ return ret;
}
static int pwc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
{
struct pwc_device *pdev = video_drvdata(file);
+ int ret;
- if (!pdev->udev)
- return -ENODEV;
+ if (mutex_lock_interruptible(&pdev->vb_queue_lock))
+ return -ERESTARTSYS;
- if (pdev->capt_file != file)
- return -EBUSY;
+ ret = pwc_test_n_set_capt_file(pdev, file);
+ if (ret == 0)
+ ret = vb2_qbuf(&pdev->vb_queue, buf);
- return vb2_qbuf(&pdev->vb_queue, buf);
+ mutex_unlock(&pdev->vb_queue_lock);
+ return ret;
}
static int pwc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
{
struct pwc_device *pdev = video_drvdata(file);
+ int ret;
- if (!pdev->udev)
- return -ENODEV;
+ if (mutex_lock_interruptible(&pdev->vb_queue_lock))
+ return -ERESTARTSYS;
- if (pdev->capt_file != file)
- return -EBUSY;
+ ret = pwc_test_n_set_capt_file(pdev, file);
+ if (ret == 0)
+ ret = vb2_dqbuf(&pdev->vb_queue, buf,
+ file->f_flags & O_NONBLOCK);
- return vb2_dqbuf(&pdev->vb_queue, buf, file->f_flags & O_NONBLOCK);
+ mutex_unlock(&pdev->vb_queue_lock);
+ return ret;
}
static int pwc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
{
struct pwc_device *pdev = video_drvdata(file);
+ int ret;
- if (!pdev->udev)
- return -ENODEV;
+ if (mutex_lock_interruptible(&pdev->vb_queue_lock))
+ return -ERESTARTSYS;
- if (pdev->capt_file != file)
- return -EBUSY;
+ ret = pwc_test_n_set_capt_file(pdev, file);
+ if (ret == 0)
+ ret = vb2_streamon(&pdev->vb_queue, i);
- return vb2_streamon(&pdev->vb_queue, i);
+ mutex_unlock(&pdev->vb_queue_lock);
+ return ret;
}
static int pwc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
{
struct pwc_device *pdev = video_drvdata(file);
+ int ret;
- if (!pdev->udev)
- return -ENODEV;
+ if (mutex_lock_interruptible(&pdev->vb_queue_lock))
+ return -ERESTARTSYS;
- if (pdev->capt_file != file)
- return -EBUSY;
+ ret = pwc_test_n_set_capt_file(pdev, file);
+ if (ret == 0)
+ ret = vb2_streamoff(&pdev->vb_queue, i);
- return vb2_streamoff(&pdev->vb_queue, i);
+ mutex_unlock(&pdev->vb_queue_lock);
+ return ret;
}
static int pwc_enum_framesizes(struct file *file, void *fh,
@@ -1119,19 +1116,17 @@ static int pwc_s_parm(struct file *file, void *fh,
parm->parm.capture.timeperframe.numerator == 0)
return -EINVAL;
- if (pwc_test_n_set_capt_file(pdev, file))
- return -EBUSY;
-
fps = parm->parm.capture.timeperframe.denominator /
parm->parm.capture.timeperframe.numerator;
- mutex_lock(&pdev->udevlock);
- if (!pdev->udev) {
- ret = -ENODEV;
+ if (mutex_lock_interruptible(&pdev->vb_queue_lock))
+ return -ERESTARTSYS;
+
+ ret = pwc_test_n_set_capt_file(pdev, file);
+ if (ret)
goto leave;
- }
- if (pdev->iso_init) {
+ if (pdev->vb_queue.streaming) {
ret = -EBUSY;
goto leave;
}
@@ -1142,7 +1137,7 @@ static int pwc_s_parm(struct file *file, void *fh,
pwc_g_parm(file, fh, parm);
leave:
- mutex_unlock(&pdev->udevlock);
+ mutex_unlock(&pdev->vb_queue_lock);
return ret;
}
@@ -1166,4 +1161,6 @@ const struct v4l2_ioctl_ops pwc_ioctl_ops = {
.vidioc_enum_frameintervals = pwc_enum_frameintervals,
.vidioc_g_parm = pwc_g_parm,
.vidioc_s_parm = pwc_s_parm,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
generated by cgit (git 2.34.1) at 2024-05-14 23:08:49 +0000