History:
+ Version 0.42:
+ Converted dsbr100 to use video_ioctl2
+ by Douglas Landgraf <dougsland@gmail.com>
+
+ Version 0.41-ac1:
+ Alan Cox: Some cleanups and fixes
+
+ Version 0.41:
+ Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
+
Version 0.40:
- Markus: Updates for 2.6.x kernels, code layout changes, name sanitizing
+ Markus: Updates for 2.6.x kernels, code layout changes, name sanitizing
Version 0.30:
Markus: Updates for 2.5.x kernel and more ISO compliant source
*/
-
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/input.h>
-#include <linux/videodev.h>
+#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/usb.h>
-#include <linux/smp_lock.h>
/*
* Version Information
*/
-#define DRIVER_VERSION "v0.40"
+#include <linux/version.h> /* for KERNEL_VERSION MACRO */
+
+#define DRIVER_VERSION "v0.41"
+#define RADIO_VERSION KERNEL_VERSION(0,4,1)
+
+static struct v4l2_queryctrl radio_qctrl[] = {
+ {
+ .id = V4L2_CID_AUDIO_MUTE,
+ .name = "Mute",
+ .minimum = 0,
+ .maximum = 1,
+ .default_value = 1,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ }
+};
+
#define DRIVER_AUTHOR "Markus Demleitner <msdemlei@tucana.harvard.edu>"
#define DRIVER_DESC "D-Link DSB-R100 USB FM radio driver"
static int usb_dsbr100_probe(struct usb_interface *intf,
const struct usb_device_id *id);
static void usb_dsbr100_disconnect(struct usb_interface *intf);
-static int usb_dsbr100_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg);
static int usb_dsbr100_open(struct inode *inode, struct file *file);
static int usb_dsbr100_close(struct inode *inode, struct file *file);
module_param(radio_nr, int, 0);
/* Data for one (physical) device */
-typedef struct {
+struct dsbr100_device {
struct usb_device *usbdev;
struct video_device *videodev;
unsigned char transfer_buffer[TB_LEN];
int stereo;
int users;
int removed;
-} dsbr100_device;
-
-
-/* File system interface */
-static struct file_operations usb_dsbr100_fops = {
- .owner = THIS_MODULE,
- .open = usb_dsbr100_open,
- .release = usb_dsbr100_close,
- .ioctl = usb_dsbr100_ioctl,
- .compat_ioctl = v4l_compat_ioctl32,
- .llseek = no_llseek,
+ int muted;
};
-/* V4L interface */
-static struct video_device dsbr100_videodev_template=
-{
- .owner = THIS_MODULE,
- .name = "D-Link DSB-R 100",
- .type = VID_TYPE_TUNER,
- .hardware = VID_HARDWARE_AZTECH,
- .fops = &usb_dsbr100_fops,
- .release = video_device_release,
-};
static struct usb_device_id usb_dsbr100_device_table [] = {
{ USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) },
/* Low-level device interface begins here */
/* switch on radio */
-static int dsbr100_start(dsbr100_device *radio)
+static int dsbr100_start(struct dsbr100_device *radio)
{
if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
USB_REQ_GET_STATUS,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
0x01, 0x00, radio->transfer_buffer, 8, 300)<0)
return -1;
+ radio->muted=0;
return (radio->transfer_buffer)[0];
}
/* switch off radio */
-static int dsbr100_stop(dsbr100_device *radio)
+static int dsbr100_stop(struct dsbr100_device *radio)
{
if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
USB_REQ_GET_STATUS,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
0x00, 0x00, radio->transfer_buffer, 8, 300)<0)
return -1;
+ radio->muted=1;
return (radio->transfer_buffer)[0];
}
/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
-static int dsbr100_setfreq(dsbr100_device *radio, int freq)
+static int dsbr100_setfreq(struct dsbr100_device *radio, int freq)
{
freq = (freq/16*80)/1000+856;
if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
/* return the device status. This is, in effect, just whether it
sees a stereo signal or not. Pity. */
-static void dsbr100_getstat(dsbr100_device *radio)
+static void dsbr100_getstat(struct dsbr100_device *radio)
{
if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
USB_REQ_GET_STATUS,
/* USB subsystem interface begins here */
-/* check if the device is present and register with v4l and
-usb if it is */
-static int usb_dsbr100_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- dsbr100_device *radio;
-
- if (!(radio = kmalloc(sizeof(dsbr100_device), GFP_KERNEL)))
- return -ENOMEM;
- if (!(radio->videodev = video_device_alloc())) {
- kfree(radio);
- return -ENOMEM;
- }
- memcpy(radio->videodev, &dsbr100_videodev_template,
- sizeof(dsbr100_videodev_template));
- radio->removed = 0;
- radio->users = 0;
- radio->usbdev = interface_to_usbdev(intf);
- radio->curfreq = FREQ_MIN*FREQ_MUL;
- video_set_drvdata(radio->videodev, radio);
- if (video_register_device(radio->videodev, VFL_TYPE_RADIO,
- radio_nr)) {
- warn("Could not register video device");
- video_device_release(radio->videodev);
- kfree(radio);
- return -EIO;
- }
- usb_set_intfdata(intf, radio);
- return 0;
-}
-
/* handle unplugging of the device, release data structures
if nothing keeps us from doing it. If something is still
keeping us busy, the release callback of v4l will take care
leak here it's tiny (~50 bytes per disconnect) */
static void usb_dsbr100_disconnect(struct usb_interface *intf)
{
- dsbr100_device *radio = usb_get_intfdata(intf);
+ struct dsbr100_device *radio = usb_get_intfdata(intf);
usb_set_intfdata (intf, NULL);
if (radio) {
}
-/* Video for Linux interface */
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *v)
+{
+ strlcpy(v->driver, "dsbr100", sizeof(v->driver));
+ strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card));
+ sprintf(v->bus_info, "ISA");
+ v->version = RADIO_VERSION;
+ v->capabilities = V4L2_CAP_TUNER;
+ return 0;
+}
-static int usb_dsbr100_do_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, void *arg)
+static int vidioc_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *v)
{
- dsbr100_device *radio=video_get_drvdata(video_devdata(file));
+ struct dsbr100_device *radio = video_get_drvdata(video_devdata(file));
+
+ if (v->index > 0)
+ return -EINVAL;
+
+ dsbr100_getstat(radio);
+ strcpy(v->name, "FM");
+ v->type = V4L2_TUNER_RADIO;
+ v->rangelow = FREQ_MIN*FREQ_MUL;
+ v->rangehigh = FREQ_MAX*FREQ_MUL;
+ v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
+ v->capability = V4L2_TUNER_CAP_LOW;
+ if(radio->stereo)
+ v->audmode = V4L2_TUNER_MODE_STEREO;
+ else
+ v->audmode = V4L2_TUNER_MODE_MONO;
+ v->signal = 0xffff; /* We can't get the signal strength */
+ return 0;
+}
- if (!radio)
- return -EIO;
+static int vidioc_s_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *v)
+{
+ if (v->index > 0)
+ return -EINVAL;
- switch(cmd) {
- case VIDIOCGCAP: {
- struct video_capability *v = arg;
+ return 0;
+}
- memset(v, 0, sizeof(*v));
- v->type = VID_TYPE_TUNER;
- v->channels = 1;
- v->audios = 1;
- strcpy(v->name, "D-Link R-100 USB FM Radio");
- return 0;
- }
- case VIDIOCGTUNER: {
- struct video_tuner *v = arg;
-
- dsbr100_getstat(radio);
- if(v->tuner) /* Only 1 tuner */
- return -EINVAL;
- v->rangelow = FREQ_MIN*FREQ_MUL;
- v->rangehigh = FREQ_MAX*FREQ_MUL;
- v->flags = VIDEO_TUNER_LOW;
- v->mode = VIDEO_MODE_AUTO;
- v->signal = radio->stereo*0x7000;
- /* Don't know how to get signal strength */
- v->flags |= VIDEO_TUNER_STEREO_ON*radio->stereo;
- strcpy(v->name, "DSB R-100");
- return 0;
- }
- case VIDIOCSTUNER: {
- struct video_tuner *v = arg;
+static int vidioc_s_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct dsbr100_device *radio = video_get_drvdata(video_devdata(file));
- if(v->tuner!=0)
- return -EINVAL;
- /* Only 1 tuner so no setting needed ! */
- return 0;
- }
- case VIDIOCGFREQ: {
- int *freq = arg;
+ radio->curfreq = f->frequency;
+ if (dsbr100_setfreq(radio, radio->curfreq)==-1)
+ warn("Set frequency failed");
+ return 0;
+}
- if (radio->curfreq==-1)
- return -EINVAL;
- *freq = radio->curfreq;
- return 0;
- }
- case VIDIOCSFREQ: {
- int *freq = arg;
+static int vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct dsbr100_device *radio = video_get_drvdata(video_devdata(file));
- radio->curfreq = *freq;
- if (dsbr100_setfreq(radio, radio->curfreq)==-1)
- warn("Set frequency failed");
- return 0;
- }
- case VIDIOCGAUDIO: {
- struct video_audio *v = arg;
-
- memset(v, 0, sizeof(*v));
- v->flags |= VIDEO_AUDIO_MUTABLE;
- v->mode = VIDEO_SOUND_STEREO;
- v->volume = 1;
- v->step = 1;
- strcpy(v->name, "Radio");
+ f->type = V4L2_TUNER_RADIO;
+ f->frequency = radio->curfreq;
+ return 0;
+}
+
+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;
}
- case VIDIOCSAUDIO: {
- struct video_audio *v = arg;
-
- if (v->audio)
- return -EINVAL;
- if (v->flags&VIDEO_AUDIO_MUTE) {
- if (dsbr100_stop(radio)==-1)
- warn("Radio did not respond properly");
- }
- else
- if (dsbr100_start(radio)==-1)
- warn("Radio did not respond properly");
- return 0;
+ }
+ return -EINVAL;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct dsbr100_device *radio = video_get_drvdata(video_devdata(file));
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ ctrl->value = radio->muted;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct dsbr100_device *radio = video_get_drvdata(video_devdata(file));
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ if (ctrl->value) {
+ if (dsbr100_stop(radio)==-1)
+ warn("Radio did not respond properly");
+ } else {
+ if (dsbr100_start(radio)==-1)
+ warn("Radio did not respond properly");
}
- default:
- return -ENOIOCTLCMD;
+ return 0;
}
+ return -EINVAL;
}
-static int usb_dsbr100_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static int vidioc_g_audio(struct file *file, void *priv,
+ struct v4l2_audio *a)
{
- return video_usercopy(inode, file, cmd, arg, usb_dsbr100_do_ioctl);
+ if (a->index > 1)
+ return -EINVAL;
+
+ strcpy(a->name, "Radio");
+ a->capability = V4L2_AUDCAP_STEREO;
+ return 0;
+}
+
+static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
+{
+ if (i != 0)
+ return -EINVAL;
+ return 0;
+}
+
+static int vidioc_s_audio(struct file *file, void *priv,
+ struct v4l2_audio *a)
+{
+ if (a->index != 0)
+ return -EINVAL;
+ return 0;
}
static int usb_dsbr100_open(struct inode *inode, struct file *file)
{
- dsbr100_device *radio=video_get_drvdata(video_devdata(file));
+ struct dsbr100_device *radio=video_get_drvdata(video_devdata(file));
radio->users = 1;
+ radio->muted = 1;
+
if (dsbr100_start(radio)<0) {
warn("Radio did not start up properly");
radio->users = 0;
static int usb_dsbr100_close(struct inode *inode, struct file *file)
{
- dsbr100_device *radio=video_get_drvdata(video_devdata(file));
+ struct dsbr100_device *radio=video_get_drvdata(video_devdata(file));
if (!radio)
return -ENODEV;
return 0;
}
+/* File system interface */
+static const struct file_operations usb_dsbr100_fops = {
+ .owner = THIS_MODULE,
+ .open = usb_dsbr100_open,
+ .release = usb_dsbr100_close,
+ .ioctl = video_ioctl2,
+ .compat_ioctl = v4l_compat_ioctl32,
+ .llseek = no_llseek,
+};
+
+/* V4L2 interface */
+static struct video_device dsbr100_videodev_template =
+{
+ .owner = THIS_MODULE,
+ .name = "D-Link DSB-R 100",
+ .type = VID_TYPE_TUNER,
+ .fops = &usb_dsbr100_fops,
+ .release = video_device_release,
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_g_tuner = vidioc_g_tuner,
+ .vidioc_s_tuner = vidioc_s_tuner,
+ .vidioc_g_frequency = vidioc_g_frequency,
+ .vidioc_s_frequency = vidioc_s_frequency,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_g_audio = vidioc_g_audio,
+ .vidioc_s_audio = vidioc_s_audio,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+};
+
+/* check if the device is present and register with v4l and
+usb if it is */
+static int usb_dsbr100_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct dsbr100_device *radio;
+
+ if (!(radio = kmalloc(sizeof(struct dsbr100_device), GFP_KERNEL)))
+ return -ENOMEM;
+ if (!(radio->videodev = video_device_alloc())) {
+ kfree(radio);
+ return -ENOMEM;
+ }
+ memcpy(radio->videodev, &dsbr100_videodev_template,
+ sizeof(dsbr100_videodev_template));
+ radio->removed = 0;
+ radio->users = 0;
+ radio->usbdev = interface_to_usbdev(intf);
+ radio->curfreq = FREQ_MIN*FREQ_MUL;
+ video_set_drvdata(radio->videodev, radio);
+ if (video_register_device(radio->videodev, VFL_TYPE_RADIO,radio_nr)) {
+ warn("Could not register video device");
+ video_device_release(radio->videodev);
+ kfree(radio);
+ return -EIO;
+ }
+ usb_set_intfdata(intf, radio);
+ return 0;
+}
+
static int __init dsbr100_init(void)
{
int retval = usb_register(&usb_dsbr100_driver);