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V4L/DVB (8777): tea575x-tuner: replace video_exclusive_open/release

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Move the video_exclusive_open/release functionality into the
driver itself.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2008-08-23 04:52:00 -03:00 committed by Mauro Carvalho Chehab
parent 3ca685aae0
commit 2f3d00250a
2 changed files with 21 additions and 2 deletions
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1
include/sound/tea575x-tuner.h
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@ -43,6 +43,7 @@ struct snd_tea575x {
unsigned int freq_fixup; /* crystal onboard */ unsigned int freq_fixup; /* crystal onboard */
unsigned int val; /* hw value */ unsigned int val; /* hw value */
unsigned long freq; /* frequency */ unsigned long freq; /* frequency */
unsigned long in_use; /* set if the device is in use */
struct snd_tea575x_ops *ops; struct snd_tea575x_ops *ops;
void *private_data; void *private_data;
}; };

22
sound/i2c/other/tea575x-tuner.c
View File

@ -175,6 +175,23 @@ static void snd_tea575x_release(struct video_device *vfd)
{ {
} }
static int snd_tea575x_exclusive_open(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct snd_tea575x *tea = video_get_drvdata(dev);
return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0;
}
static int snd_tea575x_exclusive_release(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct snd_tea575x *tea = video_get_drvdata(dev);
clear_bit(0, &tea->in_use);
return 0;
}
/* /*
* initialize all the tea575x chips * initialize all the tea575x chips
*/ */
@ -193,9 +210,10 @@ void snd_tea575x_init(struct snd_tea575x *tea)
tea->vd.release = snd_tea575x_release; tea->vd.release = snd_tea575x_release;
video_set_drvdata(&tea->vd, tea); video_set_drvdata(&tea->vd, tea);
tea->vd.fops = &tea->fops; tea->vd.fops = &tea->fops;
tea->in_use = 0;
tea->fops.owner = tea->card->module; tea->fops.owner = tea->card->module;
tea->fops.open = video_exclusive_open; tea->fops.open = snd_tea575x_exclusive_open;
tea->fops.release = video_exclusive_release; tea->fops.release = snd_tea575x_exclusive_release;
tea->fops.ioctl = snd_tea575x_ioctl; tea->fops.ioctl = snd_tea575x_ioctl;
if (video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->dev_nr - 1) < 0) { if (video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->dev_nr - 1) < 0) {
snd_printk(KERN_ERR "unable to register tea575x tuner\n"); snd_printk(KERN_ERR "unable to register tea575x tuner\n");