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[media] em28xx: std fixes: don't implement in webcam mode, and fix std changes 

When in webcam mode the STD API shouldn't be implemented.
When changing the standard the resolution wasn't updated, and there was no
check against streaming-in-progress.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-09-07 07:31:54 -03:00 committed by Mauro Carvalho Chehab
parent 7f52979484
commit d8c95c08ef
1 changed files with 21 additions and 4 deletions
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25
drivers/media/usb/em28xx/em28xx-video.c
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@ -909,6 +909,8 @@ static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
struct em28xx *dev = fh->dev;
int rc;
if (dev->board.is_webcam)
return -ENOTTY;
rc = check_dev(dev);
if (rc < 0)
return rc;
@ -924,6 +926,8 @@ static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
struct em28xx *dev = fh->dev;
int rc;
if (dev->board.is_webcam)
return -ENOTTY;
rc = check_dev(dev);
if (rc < 0)
return rc;
@ -940,15 +944,24 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
struct v4l2_format f;
int rc;
if (dev->board.is_webcam)
return -ENOTTY;
if (*norm == dev->norm)
return 0;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (videobuf_queue_is_busy(&fh->vb_vidq)) {
em28xx_errdev("%s queue busy\n", __func__);
return -EBUSY;
}
dev->norm = *norm;
/* Adjusts width/height, if needed */
f.fmt.pix.width = dev->width;
f.fmt.pix.height = dev->height;
f.fmt.pix.width = 720;
f.fmt.pix.height = (*norm & V4L2_STD_525_60) ? 480 : 576;
vidioc_try_fmt_vid_cap(file, priv, &f);
/* set new image size */
@ -1034,6 +1047,9 @@ static int vidioc_enum_input(struct file *file, void *priv,
i->type = V4L2_INPUT_TYPE_TUNER;
i->std = dev->vdev->tvnorms;
/* webcams do not have the STD API */
if (dev->board.is_webcam)
i->capabilities = 0;
return 0;
}
@ -2059,7 +2075,6 @@ static const struct video_device em28xx_video_template = {
.ioctl_ops = &video_ioctl_ops,
.tvnorms = V4L2_STD_ALL,
.current_norm = V4L2_STD_PAL,
};
static const struct v4l2_file_operations radio_fops = {
@ -2109,6 +2124,8 @@ static struct video_device *em28xx_vdev_init(struct em28xx *dev,
vfd->debug = video_debug;
vfd->lock = &dev->lock;
set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
if (dev->board.is_webcam)
vfd->tvnorms = 0;
snprintf(vfd->name, sizeof(vfd->name), "%s %s",
dev->name, type_name);
@ -2127,7 +2144,7 @@ int em28xx_register_analog_devices(struct em28xx *dev)
dev->name, EM28XX_VERSION);
/* set default norm */
dev->norm = em28xx_video_template.current_norm;
dev->norm = V4L2_STD_PAL;
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
dev->interlaced = EM28XX_INTERLACED_DEFAULT;