V4L/DVB (13064): radio-mr800: simplify access to amradio_device
Simplify access to amradio_device. Signed-off-by: David Ellingsworth <david@identd.dyndns.org> Acked-by: Alexey Klimov <klimov.linux@gmail.com> Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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d1939e4c5f
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1 changed files with 13 additions and 10 deletions
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@ -141,6 +141,8 @@ struct amradio_device {
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int muted;
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int muted;
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};
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};
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#define vdev_to_amradio(r) container_of(r, struct amradio_device, videodev)
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/* USB Device ID List */
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/* USB Device ID List */
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static struct usb_device_id usb_amradio_device_table[] = {
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static struct usb_device_id usb_amradio_device_table[] = {
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{USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT,
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{USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT,
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@ -280,7 +282,7 @@ static void usb_amradio_disconnect(struct usb_interface *intf)
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static int vidioc_querycap(struct file *file, void *priv,
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static int vidioc_querycap(struct file *file, void *priv,
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struct v4l2_capability *v)
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struct v4l2_capability *v)
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{
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{
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struct amradio_device *radio = video_drvdata(file);
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struct amradio_device *radio = file->private_data;
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strlcpy(v->driver, "radio-mr800", sizeof(v->driver));
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strlcpy(v->driver, "radio-mr800", sizeof(v->driver));
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strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card));
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strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card));
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@ -294,7 +296,7 @@ static int vidioc_querycap(struct file *file, void *priv,
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static int vidioc_g_tuner(struct file *file, void *priv,
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static int vidioc_g_tuner(struct file *file, void *priv,
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struct v4l2_tuner *v)
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struct v4l2_tuner *v)
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{
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{
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struct amradio_device *radio = video_get_drvdata(video_devdata(file));
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struct amradio_device *radio = file->private_data;
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int retval;
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int retval;
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mutex_lock(&radio->lock);
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mutex_lock(&radio->lock);
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@ -345,7 +347,7 @@ unlock:
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static int vidioc_s_tuner(struct file *file, void *priv,
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static int vidioc_s_tuner(struct file *file, void *priv,
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struct v4l2_tuner *v)
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struct v4l2_tuner *v)
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{
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{
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struct amradio_device *radio = video_get_drvdata(video_devdata(file));
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struct amradio_device *radio = file->private_data;
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int retval;
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int retval;
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mutex_lock(&radio->lock);
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mutex_lock(&radio->lock);
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@ -388,7 +390,7 @@ unlock:
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static int vidioc_s_frequency(struct file *file, void *priv,
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static int vidioc_s_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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struct v4l2_frequency *f)
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{
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{
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struct amradio_device *radio = video_get_drvdata(video_devdata(file));
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struct amradio_device *radio = file->private_data;
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int retval;
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int retval;
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mutex_lock(&radio->lock);
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mutex_lock(&radio->lock);
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@ -415,7 +417,7 @@ unlock:
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static int vidioc_g_frequency(struct file *file, void *priv,
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static int vidioc_g_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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struct v4l2_frequency *f)
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{
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{
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struct amradio_device *radio = video_get_drvdata(video_devdata(file));
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struct amradio_device *radio = file->private_data;
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int retval = 0;
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int retval = 0;
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mutex_lock(&radio->lock);
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mutex_lock(&radio->lock);
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@ -450,7 +452,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
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static int vidioc_g_ctrl(struct file *file, void *priv,
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static int vidioc_g_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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struct v4l2_control *ctrl)
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{
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{
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struct amradio_device *radio = video_get_drvdata(video_devdata(file));
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struct amradio_device *radio = file->private_data;
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int retval = -EINVAL;
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int retval = -EINVAL;
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mutex_lock(&radio->lock);
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mutex_lock(&radio->lock);
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@ -477,7 +479,7 @@ unlock:
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static int vidioc_s_ctrl(struct file *file, void *priv,
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static int vidioc_s_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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struct v4l2_control *ctrl)
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{
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{
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struct amradio_device *radio = video_get_drvdata(video_devdata(file));
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struct amradio_device *radio = file->private_data;
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int retval = -EINVAL;
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int retval = -EINVAL;
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mutex_lock(&radio->lock);
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mutex_lock(&radio->lock);
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@ -550,7 +552,7 @@ static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
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/* open device - amradio_start() and amradio_setfreq() */
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/* open device - amradio_start() and amradio_setfreq() */
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static int usb_amradio_open(struct file *file)
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static int usb_amradio_open(struct file *file)
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{
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{
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struct amradio_device *radio = video_get_drvdata(video_devdata(file));
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struct amradio_device *radio = vdev_to_amradio(video_devdata(file));
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int retval = 0;
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int retval = 0;
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mutex_lock(&radio->lock);
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mutex_lock(&radio->lock);
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@ -560,6 +562,7 @@ static int usb_amradio_open(struct file *file)
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goto unlock;
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goto unlock;
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}
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}
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file->private_data = radio;
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radio->users = 1;
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radio->users = 1;
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radio->muted = 1;
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radio->muted = 1;
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@ -589,7 +592,7 @@ unlock:
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/*close device */
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/*close device */
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static int usb_amradio_close(struct file *file)
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static int usb_amradio_close(struct file *file)
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{
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{
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struct amradio_device *radio = video_get_drvdata(video_devdata(file));
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struct amradio_device *radio = file->private_data;
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int retval = 0;
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int retval = 0;
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mutex_lock(&radio->lock);
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mutex_lock(&radio->lock);
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@ -674,7 +677,7 @@ static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = {
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static void usb_amradio_video_device_release(struct video_device *videodev)
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static void usb_amradio_video_device_release(struct video_device *videodev)
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{
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{
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struct amradio_device *radio = video_get_drvdata(videodev);
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struct amradio_device *radio = vdev_to_amradio(videodev);
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v4l2_device_unregister(&radio->v4l2_dev);
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v4l2_device_unregister(&radio->v4l2_dev);
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