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V4L/DVB (11436): radio-mr800: convert to to v4l2_device

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radio-mr800: convert to to v4l2_device.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Alexey Klimov 2009-04-03 18:45:27 -03:00 • committed by Mauro Carvalho Chehab
parent 406827cccc
commit b466248df0
1 changed files with 31 additions and 54 deletions
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85
drivers/media/radio/radio-mr800.c
View file

@ -43,6 +43,7 @@
* Douglas Schilling Landgraf <dougsland@gmail.com> and
* David Ellingsworth <david@identd.dyndns.org>
* for discussion, help and support.
* Version 0.11: Converted to v4l2_device.
*
* Many things to do:
* - Correct power managment of device (suspend & resume)
@ -59,7 +60,7 @@
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <linux/usb.h>
#include <linux/version.h> /* for KERNEL_VERSION MACRO */
@ -67,8 +68,8 @@
/* driver and module definitions */
#define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>"
#define DRIVER_DESC "AverMedia MR 800 USB FM radio driver"
#define DRIVER_VERSION "0.10"
#define RADIO_VERSION KERNEL_VERSION(0, 1, 0)
#define DRIVER_VERSION "0.11"
#define RADIO_VERSION KERNEL_VERSION(0, 1, 1)
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
@ -113,38 +114,6 @@ static int radio_nr = -1;
module_param(radio_nr, int, 0);
MODULE_PARM_DESC(radio_nr, "Radio Nr");
static struct v4l2_queryctrl radio_qctrl[] = {
{
.id = V4L2_CID_AUDIO_MUTE,
.name = "Mute",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 1,
.type = V4L2_CTRL_TYPE_BOOLEAN,
},
/* HINT: the disabled controls are only here to satify kradio and such apps */
{ .id = V4L2_CID_AUDIO_VOLUME,
.flags = V4L2_CTRL_FLAG_DISABLED,
},
{
.id = V4L2_CID_AUDIO_BALANCE,
.flags = V4L2_CTRL_FLAG_DISABLED,
},
{
.id = V4L2_CID_AUDIO_BASS,
.flags = V4L2_CTRL_FLAG_DISABLED,
},
{
.id = V4L2_CID_AUDIO_TREBLE,
.flags = V4L2_CTRL_FLAG_DISABLED,
},
{
.id = V4L2_CID_AUDIO_LOUDNESS,
.flags = V4L2_CTRL_FLAG_DISABLED,
},
};
static int usb_amradio_probe(struct usb_interface *intf,
const struct usb_device_id *id);
static void usb_amradio_disconnect(struct usb_interface *intf);
@ -159,6 +128,7 @@ struct amradio_device {
/* reference to USB and video device */
struct usb_device *usbdev;
struct video_device *videodev;
struct v4l2_device v4l2_dev;
unsigned char *buffer;
struct mutex lock; /* buffer locking */
@ -329,6 +299,7 @@ static void usb_amradio_disconnect(struct usb_interface *intf)
usb_set_intfdata(intf, NULL);
video_unregister_device(radio->videodev);
v4l2_device_disconnect(&radio->v4l2_dev);
}
/* vidioc_querycap - query device capabilities */
@ -463,14 +434,11 @@ static int vidioc_g_frequency(struct file *file, void *priv,
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qc)
{
int i;
for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
if (qc->id && qc->id == radio_qctrl[i].id) {
memcpy(qc, &(radio_qctrl[i]), sizeof(*qc));
return 0;
}
switch (qc->id) {
case V4L2_CID_AUDIO_MUTE:
return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
}
return -EINVAL;
}
@ -671,34 +639,29 @@ static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = {
.vidioc_s_input = vidioc_s_input,
};
static void usb_amradio_device_release(struct video_device *videodev)
static void usb_amradio_video_device_release(struct video_device *videodev)
{
struct amradio_device *radio = video_get_drvdata(videodev);
/* we call v4l to free radio->videodev */
video_device_release(videodev);
v4l2_device_unregister(&radio->v4l2_dev);
/* free rest memory */
kfree(radio->buffer);
kfree(radio);
}
/* V4L2 interface */
static struct video_device amradio_videodev_template = {
.name = "AverMedia MR 800 USB FM Radio",
.fops = &usb_amradio_fops,
.ioctl_ops = &usb_amradio_ioctl_ops,
.release = usb_amradio_device_release,
};
/* check if the device is present and register with v4l and usb if it is */
static int usb_amradio_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct amradio_device *radio;
struct v4l2_device *v4l2_dev;
int retval;
radio = kmalloc(sizeof(struct amradio_device), GFP_KERNEL);
radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL);
if (!radio) {
dev_err(&intf->dev, "kmalloc for amradio_device failed\n");
@ -713,6 +676,15 @@ static int usb_amradio_probe(struct usb_interface *intf,
return -ENOMEM;
}
v4l2_dev = &radio->v4l2_dev;
retval = v4l2_device_register(&intf->dev, v4l2_dev);
if (retval < 0) {
dev_err(&intf->dev, "couldn't register v4l2_device\n");
kfree(radio->buffer);
kfree(radio);
return retval;
}
radio->videodev = video_device_alloc();
if (!radio->videodev) {
@ -722,8 +694,11 @@ static int usb_amradio_probe(struct usb_interface *intf,
return -ENOMEM;
}
memcpy(radio->videodev, &amradio_videodev_template,
sizeof(amradio_videodev_template));
strlcpy(radio->videodev->name, v4l2_dev->name, sizeof(radio->videodev->name));
radio->videodev->v4l2_dev = v4l2_dev;
radio->videodev->fops = &usb_amradio_fops;
radio->videodev->ioctl_ops = &usb_amradio_ioctl_ops;
radio->videodev->release = usb_amradio_video_device_release;
radio->removed = 0;
radio->users = 0;
@ -734,10 +709,12 @@ static int usb_amradio_probe(struct usb_interface *intf,
mutex_init(&radio->lock);
video_set_drvdata(radio->videodev, radio);
retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr);
if (retval < 0) {
dev_err(&intf->dev, "could not register video device\n");
video_device_release(radio->videodev);
v4l2_device_unregister(v4l2_dev);
kfree(radio->buffer);
kfree(radio);
return -EIO;