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[media] bttv: embed video_device

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Embed the video_device struct to simplify the error handling and in
order to (eventually) get rid of video_device_alloc/release.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2015-03-09 13:34:02 -03:00 committed by Mauro Carvalho Chehab
parent 34080bc25f
commit 23fb4c5ea1
2 changed files with 25 additions and 54 deletions
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73
drivers/media/pci/bt8xx/bttv-driver.c
View File

@ -2474,7 +2474,7 @@ static int bttv_querycap(struct file *file, void *priv,
return -EINVAL;
strlcpy(cap->driver, "bttv", sizeof(cap->driver));
strlcpy(cap->card, btv->video_dev->name, sizeof(cap->card));
strlcpy(cap->card, btv->video_dev.name, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info),
"PCI:%s", pci_name(btv->c.pci));
cap->capabilities =
@ -2484,9 +2484,9 @@ static int bttv_querycap(struct file *file, void *priv,
V4L2_CAP_DEVICE_CAPS;
if (no_overlay <= 0)
cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY;
if (btv->vbi_dev)
if (video_is_registered(&btv->vbi_dev))
cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
if (btv->radio_dev)
if (video_is_registered(&btv->radio_dev))
cap->capabilities |= V4L2_CAP_RADIO;
/*
@ -3905,18 +3905,14 @@ static irqreturn_t bttv_irq(int irq, void *dev_id)
/* ----------------------------------------------------------------------- */
/* initialization */
static struct video_device *vdev_init(struct bttv *btv,
const struct video_device *template,
const char *type_name)
static void vdev_init(struct bttv *btv,
struct video_device *vfd,
const struct video_device *template,
const char *type_name)
{
struct video_device *vfd;
vfd = video_device_alloc();
if (NULL == vfd)
return NULL;
*vfd = *template;
vfd->v4l2_dev = &btv->c.v4l2_dev;
vfd->release = video_device_release;
vfd->release = video_device_release_empty;
video_set_drvdata(vfd, btv);
snprintf(vfd->name, sizeof(vfd->name), "BT%d%s %s (%s)",
btv->id, (btv->id==848 && btv->revision==0x12) ? "A" : "",
@ -3927,32 +3923,13 @@ static struct video_device *vdev_init(struct bttv *btv,
v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
}
return vfd;
}
static void bttv_unregister_video(struct bttv *btv)
{
if (btv->video_dev) {
if (video_is_registered(btv->video_dev))
video_unregister_device(btv->video_dev);
else
video_device_release(btv->video_dev);
btv->video_dev = NULL;
}
if (btv->vbi_dev) {
if (video_is_registered(btv->vbi_dev))
video_unregister_device(btv->vbi_dev);
else
video_device_release(btv->vbi_dev);
btv->vbi_dev = NULL;
}
if (btv->radio_dev) {
if (video_is_registered(btv->radio_dev))
video_unregister_device(btv->radio_dev);
else
video_device_release(btv->radio_dev);
btv->radio_dev = NULL;
}
video_unregister_device(&btv->video_dev);
video_unregister_device(&btv->vbi_dev);
video_unregister_device(&btv->radio_dev);
}
/* register video4linux devices */
@ -3962,44 +3939,38 @@ static int bttv_register_video(struct bttv *btv)
pr_notice("Overlay support disabled\n");
/* video */
btv->video_dev = vdev_init(btv, &bttv_video_template, "video");
vdev_init(btv, &btv->video_dev, &bttv_video_template, "video");
if (NULL == btv->video_dev)
goto err;
if (video_register_device(btv->video_dev, VFL_TYPE_GRABBER,
if (video_register_device(&btv->video_dev, VFL_TYPE_GRABBER,
video_nr[btv->c.nr]) < 0)
goto err;
pr_info("%d: registered device %s\n",
btv->c.nr, video_device_node_name(btv->video_dev));
if (device_create_file(&btv->video_dev->dev,
btv->c.nr, video_device_node_name(&btv->video_dev));
if (device_create_file(&btv->video_dev.dev,
&dev_attr_card)<0) {
pr_err("%d: device_create_file 'card' failed\n", btv->c.nr);
goto err;
}
/* vbi */
btv->vbi_dev = vdev_init(btv, &bttv_video_template, "vbi");
vdev_init(btv, &btv->vbi_dev, &bttv_video_template, "vbi");
if (NULL == btv->vbi_dev)
goto err;
if (video_register_device(btv->vbi_dev, VFL_TYPE_VBI,
if (video_register_device(&btv->vbi_dev, VFL_TYPE_VBI,
vbi_nr[btv->c.nr]) < 0)
goto err;
pr_info("%d: registered device %s\n",
btv->c.nr, video_device_node_name(btv->vbi_dev));
btv->c.nr, video_device_node_name(&btv->vbi_dev));
if (!btv->has_radio)
return 0;
/* radio */
btv->radio_dev = vdev_init(btv, &radio_template, "radio");
if (NULL == btv->radio_dev)
goto err;
btv->radio_dev->ctrl_handler = &btv->radio_ctrl_handler;
if (video_register_device(btv->radio_dev, VFL_TYPE_RADIO,
vdev_init(btv, &btv->radio_dev, &radio_template, "radio");
btv->radio_dev.ctrl_handler = &btv->radio_ctrl_handler;
if (video_register_device(&btv->radio_dev, VFL_TYPE_RADIO,
radio_nr[btv->c.nr]) < 0)
goto err;
pr_info("%d: registered device %s\n",
btv->c.nr, video_device_node_name(btv->radio_dev));
btv->c.nr, video_device_node_name(&btv->radio_dev));
/* all done */
return 0;

6
drivers/media/pci/bt8xx/bttvp.h
View File

@ -404,9 +404,9 @@ struct bttv {
struct v4l2_subdev *sd_tda7432;
/* video4linux (1) */
struct video_device *video_dev;
struct video_device *radio_dev;
struct video_device *vbi_dev;
struct video_device video_dev;
struct video_device radio_dev;
struct video_device vbi_dev;
/* controls */
struct v4l2_ctrl_handler ctrl_handler;