1 files changed, 258 insertions, 371 deletions

diff --git a/drivers/media/radio/dsbr100.c b/drivers/media/radio/dsbr100.c
index a5ca176a7b0..142c2ee64d3 100644
--- a/drivers/media/radio/dsbr100.c
+++ b/drivers/media/radio/dsbr100.c
@@ -1,81 +1,37 @@
-/* A driver for the D-Link DSB-R100 USB radio.  The R100 plugs
- into both the USB and an analog audio input, so this thing
- only deals with initialisation and frequency setting, the
- audio data has to be handled by a sound driver.
-
- Major issue: I can't find out where the device reports the signal
- strength, and indeed the windows software appearantly just looks
- at the stereo indicator as well.  So, scanning will only find
- stereo stations.  Sad, but I can't help it.
-
- Also, the windows program sends oodles of messages over to the
- device, and I couldn't figure out their meaning.  My suspicion
- is that they don't have any:-)
-
- You might find some interesting stuff about this module at
- http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr
-
- Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- History:
-
- Version 0.43:
-	Oliver Neukum: avoided DMA coherency issue
-
- 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
-
- Version 0.30:
-	Markus: Updates for 2.5.x kernel and more ISO compliant source
-
- Version 0.25:
-	PSL and Markus: Cleanup, radio now doesn't stop on device close
-
- Version 0.24:
-	Markus: Hope I got these silly VIDEO_TUNER_LOW issues finally
-	right.  Some minor cleanup, improved standalone compilation
-
- Version 0.23:
-	Markus: Sign extension bug fixed by declaring transfer_buffer unsigned
-
- Version 0.22:
-	Markus: Some (brown bag) cleanup in what VIDIOCSTUNER returns,
-	thanks to Mike Cox for pointing the problem out.
-
- Version 0.21:
-	Markus: Minor cleanup, warnings if something goes wrong, lame attempt
-	to adhere to Documentation/CodingStyle
-
- Version 0.2:
-	Brad Hards <bradh@dynamite.com.au>: Fixes to make it work as non-module
-	Markus: Copyright clarification
-
- Version 0.01: Markus: initial release
-
+/* A driver for the D-Link DSB-R100 USB radio and Gemtek USB Radio 21.
+ * The device plugs into both the USB and an analog audio input, so this thing
+ * only deals with initialisation and frequency setting, the
+ * audio data has to be handled by a sound driver.
+ *
+ * Major issue: I can't find out where the device reports the signal
+ * strength, and indeed the windows software appearantly just looks
+ * at the stereo indicator as well.  So, scanning will only find
+ * stereo stations.  Sad, but I can't help it.
+ *
+ * Also, the windows program sends oodles of messages over to the
+ * device, and I couldn't figure out their meaning.  My suspicion
+ * is that they don't have any:-)
+ *
+ * You might find some interesting stuff about this module at
+ * http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr
+ *
+ * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool.
+ *
+ * Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
 
 #include <linux/kernel.h>
@@ -84,31 +40,19 @@
 #include <linux/slab.h>
 #include <linux/input.h>
 #include <linux/videodev2.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
 #include <linux/usb.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
 
 /*
  * Version Information
  */
-#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"
+MODULE_AUTHOR("Markus Demleitner <msdemlei@tucana.harvard.edu>");
+MODULE_DESCRIPTION("D-Link DSB-R100 USB FM radio driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.1.0");
 
 #define DSB100_VENDOR 0x04b4
 #define DSB100_PRODUCT 0x1002
@@ -125,12 +69,7 @@ devices, that would be 76 and 91.  */
 #define FREQ_MAX 108.0
 #define FREQ_MUL 16000
 
-
-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_open(struct inode *inode, struct file *file);
-static int usb_dsbr100_close(struct inode *inode, struct file *file);
+#define v4l2_dev_to_radio(d) container_of(d, struct dsbr100_device, v4l2_dev)
 
 static int radio_nr = -1;
 module_param(radio_nr, int, 0);
@@ -138,136 +77,112 @@ module_param(radio_nr, int, 0);
 /* Data for one (physical) device */
 struct dsbr100_device {
 	struct usb_device *usbdev;
-	struct video_device *videodev;
+	struct video_device videodev;
+	struct v4l2_device v4l2_dev;
+	struct v4l2_ctrl_handler hdl;
+
 	u8 *transfer_buffer;
+	struct mutex v4l2_lock;
 	int curfreq;
-	int stereo;
-	int users;
-	int removed;
-	int muted;
-};
-
-
-static struct usb_device_id usb_dsbr100_device_table [] = {
-	{ USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) },
-	{ }						/* Terminating entry */
+	bool stereo;
+	bool muted;
 };
 
-MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table);
+/* Low-level device interface begins here */
 
-/* USB subsystem interface */
-static struct usb_driver usb_dsbr100_driver = {
-	.name =		"dsbr100",
-	.probe =	usb_dsbr100_probe,
-	.disconnect =	usb_dsbr100_disconnect,
-	.id_table =	usb_dsbr100_device_table,
-};
+/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
+static int dsbr100_setfreq(struct dsbr100_device *radio, unsigned freq)
+{
+	unsigned f = (freq / 16 * 80) / 1000 + 856;
+	int retval = 0;
+
+	if (!radio->muted) {
+		retval = usb_control_msg(radio->usbdev,
+				usb_rcvctrlpipe(radio->usbdev, 0),
+				DSB100_TUNE,
+				USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+				(f >> 8) & 0x00ff, f & 0xff,
+				radio->transfer_buffer, 8, 300);
+		if (retval >= 0)
+			mdelay(1);
+	}
 
-/* Low-level device interface begins here */
+	if (retval >= 0) {
+		radio->curfreq = freq;
+		return 0;
+	}
+	dev_err(&radio->usbdev->dev,
+		"%s - usb_control_msg returned %i, request %i\n",
+			__func__, retval, DSB100_TUNE);
+	return retval;
+}
 
 /* switch on 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,
-			0x00, 0xC7, radio->transfer_buffer, 8, 300) < 0 ||
-	usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
-			DSB100_ONOFF,
-			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];
-}
+	int retval = usb_control_msg(radio->usbdev,
+		usb_rcvctrlpipe(radio->usbdev, 0),
+		DSB100_ONOFF,
+		USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+		0x01, 0x00, radio->transfer_buffer, 8, 300);
 
+	if (retval >= 0)
+		return dsbr100_setfreq(radio, radio->curfreq);
+	dev_err(&radio->usbdev->dev,
+		"%s - usb_control_msg returned %i, request %i\n",
+			__func__, retval, DSB100_ONOFF);
+	return retval;
+
+}
 
 /* switch off 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,
-			0x16, 0x1C, radio->transfer_buffer, 8, 300) < 0 ||
-	usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
-			DSB100_ONOFF,
-			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];
-}
+	int retval = usb_control_msg(radio->usbdev,
+		usb_rcvctrlpipe(radio->usbdev, 0),
+		DSB100_ONOFF,
+		USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+		0x00, 0x00, radio->transfer_buffer, 8, 300);
+
+	if (retval >= 0)
+		return 0;
+	dev_err(&radio->usbdev->dev,
+		"%s - usb_control_msg returned %i, request %i\n",
+			__func__, retval, DSB100_ONOFF);
+	return retval;
 
-/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
-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),
-			DSB100_TUNE,
-			USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
-			(freq >> 8) & 0x00ff, freq & 0xff,
-			radio->transfer_buffer, 8, 300) < 0 ||
-	   usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
-			USB_REQ_GET_STATUS,
-			USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
-			0x96, 0xB7, radio->transfer_buffer, 8, 300) < 0 ||
-	usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
-			USB_REQ_GET_STATUS,
-			USB_TYPE_VENDOR | USB_RECIP_DEVICE |  USB_DIR_IN,
-			0x00, 0x24, radio->transfer_buffer, 8, 300) < 0) {
-		radio->stereo = -1;
-		return -1;
-	}
-	radio->stereo = !((radio->transfer_buffer)[0] & 0x01);
-	return (radio->transfer_buffer)[0];
 }
 
 /* return the device status.  This is, in effect, just whether it
 sees a stereo signal or not.  Pity. */
 static void dsbr100_getstat(struct dsbr100_device *radio)
 {
-	if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
+	int retval = usb_control_msg(radio->usbdev,
+		usb_rcvctrlpipe(radio->usbdev, 0),
 		USB_REQ_GET_STATUS,
 		USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
-		0x00 , 0x24, radio->transfer_buffer, 8, 300) < 0)
-		radio->stereo = -1;
-	else
+		0x00, 0x24, radio->transfer_buffer, 8, 300);
+
+	if (retval < 0) {
+		radio->stereo = false;
+		dev_err(&radio->usbdev->dev,
+			"%s - usb_control_msg returned %i, request %i\n",
+				__func__, retval, USB_REQ_GET_STATUS);
+	} else {
 		radio->stereo = !(radio->transfer_buffer[0] & 0x01);
-}
-
-
-/* USB subsystem interface begins here */
-
-/* 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
-of releasing it. */
-static void usb_dsbr100_disconnect(struct usb_interface *intf)
-{
-	struct dsbr100_device *radio = usb_get_intfdata(intf);
-
-	usb_set_intfdata (intf, NULL);
-	if (radio) {
-		video_unregister_device(radio->videodev);
-		radio->videodev = NULL;
-		if (radio->users) {
-			kfree(radio->transfer_buffer);
-			kfree(radio);
-		} else {
-			radio->removed = 1;
-		}
 	}
 }
 
-
 static int vidioc_querycap(struct file *file, void *priv,
 					struct v4l2_capability *v)
 {
+	struct dsbr100_device *radio = video_drvdata(file);
+
 	strlcpy(v->driver, "dsbr100", sizeof(v->driver));
 	strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card));
-	sprintf(v->bus_info, "USB");
-	v->version = RADIO_VERSION;
-	v->capabilities = V4L2_CAP_TUNER;
+	usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
+	v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
+	v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS;
 	return 0;
 }
 
@@ -284,34 +199,30 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 	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 */
+	v->rxsubchans = radio->stereo ? V4L2_TUNER_SUB_STEREO :
+		V4L2_TUNER_SUB_MONO;
+	v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
+	v->audmode = V4L2_TUNER_MODE_STEREO;
+	v->signal = radio->stereo ? 0xffff : 0;     /* We can't get the signal strength */
 	return 0;
 }
 
 static int vidioc_s_tuner(struct file *file, void *priv,
-				struct v4l2_tuner *v)
+				const struct v4l2_tuner *v)
 {
-	if (v->index > 0)
-		return -EINVAL;
-
-	return 0;
+	return v->index ? -EINVAL : 0;
 }
 
 static int vidioc_s_frequency(struct file *file, void *priv,
-				struct v4l2_frequency *f)
+				const struct v4l2_frequency *f)
 {
 	struct dsbr100_device *radio = video_drvdata(file);
 
-	radio->curfreq = f->frequency;
-	if (dsbr100_setfreq(radio, radio->curfreq) == -1)
-		dev_warn(&radio->usbdev->dev, "Set frequency failed\n");
-	return 0;
+	if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
+		return -EINVAL;
+
+	return dsbr100_setfreq(radio, clamp_t(unsigned, f->frequency,
+			FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL));
 }
 
 static int vidioc_g_frequency(struct file *file, void *priv,
@@ -319,145 +230,108 @@ static int vidioc_g_frequency(struct file *file, void *priv,
 {
 	struct dsbr100_device *radio = video_drvdata(file);
 
+	if (f->tuner)
+		return -EINVAL;
 	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;
-		}
-	}
-	return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
-				struct v4l2_control *ctrl)
+static int usb_dsbr100_s_ctrl(struct v4l2_ctrl *ctrl)
 {
-	struct dsbr100_device *radio = video_drvdata(file);
+	struct dsbr100_device *radio =
+		container_of(ctrl->handler, struct dsbr100_device, hdl);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
-		ctrl->value = radio->muted;
-		return 0;
+		radio->muted = ctrl->val;
+		return radio->muted ? dsbr100_stop(radio) : dsbr100_start(radio);
 	}
 	return -EINVAL;
 }
 
-static int vidioc_s_ctrl(struct file *file, void *priv,
-				struct v4l2_control *ctrl)
-{
-	struct dsbr100_device *radio = video_drvdata(file);
 
-	switch (ctrl->id) {
-	case V4L2_CID_AUDIO_MUTE:
-		if (ctrl->value) {
-			if (dsbr100_stop(radio) == -1) {
-				dev_warn(&radio->usbdev->dev,
-					 "Radio did not respond properly\n");
-				return -EBUSY;
-			}
-		} else {
-			if (dsbr100_start(radio) == -1) {
-				dev_warn(&radio->usbdev->dev,
-					 "Radio did not respond properly\n");
-				return -EBUSY;
-			}
-		}
-		return 0;
-	}
-	return -EINVAL;
-}
+/* USB subsystem interface begins here */
 
-static int vidioc_g_audio(struct file *file, void *priv,
-				struct v4l2_audio *a)
+/*
+ * Handle unplugging of the device.
+ * We call video_unregister_device in any case.
+ * The last function called in this procedure is
+ * usb_dsbr100_video_device_release
+ */
+static void usb_dsbr100_disconnect(struct usb_interface *intf)
 {
-	if (a->index > 1)
-		return -EINVAL;
+	struct dsbr100_device *radio = usb_get_intfdata(intf);
 
-	strcpy(a->name, "Radio");
-	a->capability = V4L2_AUDCAP_STEREO;
-	return 0;
+	mutex_lock(&radio->v4l2_lock);
+	/*
+	 * Disconnect is also called on unload, and in that case we need to
+	 * mute the device. This call will silently fail if it is called
+	 * after a physical disconnect.
+	 */
+	usb_control_msg(radio->usbdev,
+		usb_rcvctrlpipe(radio->usbdev, 0),
+		DSB100_ONOFF,
+		USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+		0x00, 0x00, radio->transfer_buffer, 8, 300);
+	usb_set_intfdata(intf, NULL);
+	video_unregister_device(&radio->videodev);
+	v4l2_device_disconnect(&radio->v4l2_dev);
+	mutex_unlock(&radio->v4l2_lock);
+	v4l2_device_put(&radio->v4l2_dev);
 }
 
-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)
+/* Suspend device - stop device. */
+static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message)
 {
-	if (i != 0)
-		return -EINVAL;
-	return 0;
-}
+	struct dsbr100_device *radio = usb_get_intfdata(intf);
 
-static int vidioc_s_audio(struct file *file, void *priv,
-					struct v4l2_audio *a)
-{
-	if (a->index != 0)
-		return -EINVAL;
+	mutex_lock(&radio->v4l2_lock);
+	if (!radio->muted && dsbr100_stop(radio) < 0)
+		dev_warn(&intf->dev, "dsbr100_stop failed\n");
+	mutex_unlock(&radio->v4l2_lock);
+
+	dev_info(&intf->dev, "going into suspend..\n");
 	return 0;
 }
 
-static int usb_dsbr100_open(struct inode *inode, struct file *file)
+/* Resume device - start device. */
+static int usb_dsbr100_resume(struct usb_interface *intf)
 {
-	struct dsbr100_device *radio = video_drvdata(file);
-	int retval;
-
-	lock_kernel();
-	radio->users = 1;
-	radio->muted = 1;
-
-	if (dsbr100_start(radio) < 0) {
-		dev_warn(&radio->usbdev->dev,
-			 "Radio did not start up properly\n");
-		radio->users = 0;
-		unlock_kernel();
-		return -EIO;
-	}
-
-	retval = dsbr100_setfreq(radio, radio->curfreq);
+	struct dsbr100_device *radio = usb_get_intfdata(intf);
 
-	if (retval == -1)
-		printk(KERN_WARNING KBUILD_MODNAME ": Set frequency failed\n");
+	mutex_lock(&radio->v4l2_lock);
+	if (!radio->muted && dsbr100_start(radio) < 0)
+		dev_warn(&intf->dev, "dsbr100_start failed\n");
+	mutex_unlock(&radio->v4l2_lock);
 
-	unlock_kernel();
+	dev_info(&intf->dev, "coming out of suspend..\n");
 	return 0;
 }
 
-static int usb_dsbr100_close(struct inode *inode, struct file *file)
+/* free data structures */
+static void usb_dsbr100_release(struct v4l2_device *v4l2_dev)
 {
-	struct dsbr100_device *radio = video_drvdata(file);
+	struct dsbr100_device *radio = v4l2_dev_to_radio(v4l2_dev);
 
-	if (!radio)
-		return -ENODEV;
-	radio->users = 0;
-	if (radio->removed) {
-		kfree(radio->transfer_buffer);
-		kfree(radio);
-	}
-	return 0;
+	v4l2_ctrl_handler_free(&radio->hdl);
+	v4l2_device_unregister(&radio->v4l2_dev);
+	kfree(radio->transfer_buffer);
+	kfree(radio);
 }
 
+static const struct v4l2_ctrl_ops usb_dsbr100_ctrl_ops = {
+	.s_ctrl = usb_dsbr100_s_ctrl,
+};
+
 /* File system interface */
-static const struct file_operations usb_dsbr100_fops = {
+static const struct v4l2_file_operations usb_dsbr100_fops = {
 	.owner		= THIS_MODULE,
-	.open		= usb_dsbr100_open,
-	.release	= usb_dsbr100_close,
-	.ioctl		= video_ioctl2,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl	= v4l_compat_ioctl32,
-#endif
-	.llseek		= no_llseek,
+	.unlocked_ioctl	= video_ioctl2,
+	.open           = v4l2_fh_open,
+	.release        = v4l2_fh_release,
+	.poll		= v4l2_ctrl_poll,
 };
 
 static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = {
@@ -466,31 +340,20 @@ static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = {
 	.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,
-};
-
-/* V4L2 interface */
-static struct video_device dsbr100_videodev_template = {
-	.name		= "D-Link DSB-R 100",
-	.fops		= &usb_dsbr100_fops,
-	.ioctl_ops 	= &usb_dsbr100_ioctl_ops,
-	.release	= video_device_release,
+	.vidioc_log_status  = v4l2_ctrl_log_status,
+	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 };
 
-/* check if the device is present and register with v4l and
-usb if it is */
+/* 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;
+	struct v4l2_device *v4l2_dev;
+	int retval;
 
-	radio = kmalloc(sizeof(struct dsbr100_device), GFP_KERNEL);
+	radio = kzalloc(sizeof(struct dsbr100_device), GFP_KERNEL);
 
 	if (!radio)
 		return -ENOMEM;
@@ -501,47 +364,71 @@ static int usb_dsbr100_probe(struct usb_interface *intf,
 		kfree(radio);
 		return -ENOMEM;
 	}
-	radio->videodev = video_device_alloc();
 
-	if (!(radio->videodev)) {
-		kfree(radio->transfer_buffer);
-		kfree(radio);
-		return -ENOMEM;
+	v4l2_dev = &radio->v4l2_dev;
+	v4l2_dev->release = usb_dsbr100_release;
+
+	retval = v4l2_device_register(&intf->dev, v4l2_dev);
+	if (retval < 0) {
+		v4l2_err(v4l2_dev, "couldn't register v4l2_device\n");
+		goto err_reg_dev;
 	}
-	memcpy(radio->videodev, &dsbr100_videodev_template,
-		sizeof(dsbr100_videodev_template));
-	radio->removed = 0;
-	radio->users = 0;
+
+	v4l2_ctrl_handler_init(&radio->hdl, 1);
+	v4l2_ctrl_new_std(&radio->hdl, &usb_dsbr100_ctrl_ops,
+			  V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
+	if (radio->hdl.error) {
+		retval = radio->hdl.error;
+		v4l2_err(v4l2_dev, "couldn't register control\n");
+		goto err_reg_ctrl;
+	}
+	mutex_init(&radio->v4l2_lock);
+	strlcpy(radio->videodev.name, v4l2_dev->name, sizeof(radio->videodev.name));
+	radio->videodev.v4l2_dev = v4l2_dev;
+	radio->videodev.fops = &usb_dsbr100_fops;
+	radio->videodev.ioctl_ops = &usb_dsbr100_ioctl_ops;
+	radio->videodev.release = video_device_release_empty;
+	radio->videodev.lock = &radio->v4l2_lock;
+	radio->videodev.ctrl_handler = &radio->hdl;
+	set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags);
+
 	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) < 0) {
-		dev_warn(&intf->dev, "Could not register video device\n");
-		video_device_release(radio->videodev);
-		kfree(radio->transfer_buffer);
-		kfree(radio);
-		return -EIO;
-	}
+	radio->muted = true;
+
+	video_set_drvdata(&radio->videodev, radio);
 	usb_set_intfdata(intf, radio);
-	return 0;
-}
 
-static int __init dsbr100_init(void)
-{
-	int retval = usb_register(&usb_dsbr100_driver);
-	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
-	       DRIVER_DESC "\n");
+	retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
+	if (retval == 0)
+		return 0;
+	v4l2_err(v4l2_dev, "couldn't register video device\n");
+
+err_reg_ctrl:
+	v4l2_ctrl_handler_free(&radio->hdl);
+	v4l2_device_unregister(v4l2_dev);
+err_reg_dev:
+	kfree(radio->transfer_buffer);
+	kfree(radio);
 	return retval;
 }
 
-static void __exit dsbr100_exit(void)
-{
-	usb_deregister(&usb_dsbr100_driver);
-}
+static struct usb_device_id usb_dsbr100_device_table[] = {
+	{ USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) },
+	{ }						/* Terminating entry */
+};
 
-module_init (dsbr100_init);
-module_exit (dsbr100_exit);
+MODULE_DEVICE_TABLE(usb, usb_dsbr100_device_table);
 
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_LICENSE("GPL");
+/* USB subsystem interface */
+static struct usb_driver usb_dsbr100_driver = {
+	.name			= "dsbr100",
+	.probe			= usb_dsbr100_probe,
+	.disconnect		= usb_dsbr100_disconnect,
+	.id_table		= usb_dsbr100_device_table,
+	.suspend		= usb_dsbr100_suspend,
+	.resume			= usb_dsbr100_resume,
+	.reset_resume		= usb_dsbr100_resume,
+};
+
+module_usb_driver(usb_dsbr100_driver);