[deliverable/linux.git] / drivers / media / radio / radio-shark2.c

/*
 * Linux V4L2 radio driver for the Griffin radioSHARK2 USB radio receiver
 *
 * Note the radioSHARK2 offers the audio through a regular USB audio device,
 * this driver only handles the tuning.
 *
 * The info necessary to drive the shark2 was taken from the small userspace
 * shark2.c program by Hisaaki Shibata, which he kindly placed in the Public
 * Domain.
 *
 * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>
 *
 * 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/init.h>
#include <linux/kernel.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/workqueue.h>
#include <media/v4l2-device.h>
#include "radio-tea5777.h"

MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_DESCRIPTION("Griffin radioSHARK2, USB radio receiver driver");
MODULE_LICENSE("GPL");

static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");


#define SHARK_IN_EP		0x83
#define SHARK_OUT_EP		0x05

#define TB_LEN 7
#define DRV_NAME "radioshark2"

#define v4l2_dev_to_shark(d) container_of(d, struct shark_device, v4l2_dev)

enum { BLUE_LED, RED_LED, NO_LEDS };

static void shark_led_set_blue(struct led_classdev *led_cdev,
			       enum led_brightness value);
static void shark_led_set_red(struct led_classdev *led_cdev,
			      enum led_brightness value);

static const struct led_classdev shark_led_templates[NO_LEDS] = {
	[BLUE_LED] = {
		.name		= "%s:blue:",
		.brightness	= LED_OFF,
		.max_brightness = 127,
		.brightness_set = shark_led_set_blue,
	},
	[RED_LED] = {
		.name		= "%s:red:",
		.brightness	= LED_OFF,
		.max_brightness = 1,
		.brightness_set = shark_led_set_red,
	},
};

struct shark_device {
	struct usb_device *usbdev;
	struct v4l2_device v4l2_dev;
	struct radio_tea5777 tea;

	struct work_struct led_work;
	struct led_classdev leds[NO_LEDS];
	char led_names[NO_LEDS][32];
	atomic_t brightness[NO_LEDS];
	unsigned long brightness_new;

	u8 *transfer_buffer;
};

static atomic_t shark_instance = ATOMIC_INIT(0);

static int shark_write_reg(struct radio_tea5777 *tea, u64 reg)
{
	struct shark_device *shark = tea->private_data;
	int i, res, actual_len;

	memset(shark->transfer_buffer, 0, TB_LEN);
	shark->transfer_buffer[0] = 0x81; /* Write register command */
	for (i = 0; i < 6; i++)
		shark->transfer_buffer[i + 1] = (reg >> (40 - i * 8)) & 0xff;

	v4l2_dbg(1, debug, tea->v4l2_dev,
		 "shark2-write: %02x %02x %02x %02x %02x %02x %02x\n",
		 shark->transfer_buffer[0], shark->transfer_buffer[1],
		 shark->transfer_buffer[2], shark->transfer_buffer[3],
		 shark->transfer_buffer[4], shark->transfer_buffer[5],
		 shark->transfer_buffer[6]);

	res = usb_interrupt_msg(shark->usbdev,
				usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
				shark->transfer_buffer, TB_LEN,
				&actual_len, 1000);
	if (res < 0) {
		v4l2_err(tea->v4l2_dev, "write error: %d\n", res);
		return res;
	}

	return 0;
}

static int shark_read_reg(struct radio_tea5777 *tea, u32 *reg_ret)
{
	struct shark_device *shark = tea->private_data;
	int i, res, actual_len;
	u32 reg = 0;

	memset(shark->transfer_buffer, 0, TB_LEN);
	shark->transfer_buffer[0] = 0x82;
	res = usb_interrupt_msg(shark->usbdev,
				usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
				shark->transfer_buffer, TB_LEN,
				&actual_len, 1000);
	if (res < 0) {
		v4l2_err(tea->v4l2_dev, "request-read error: %d\n", res);
		return res;
	}

	res = usb_interrupt_msg(shark->usbdev,
				usb_rcvintpipe(shark->usbdev, SHARK_IN_EP),
				shark->transfer_buffer, TB_LEN,
				&actual_len, 1000);
	if (res < 0) {
		v4l2_err(tea->v4l2_dev, "read error: %d\n", res);
		return res;
	}

	for (i = 0; i < 3; i++)
		reg |= shark->transfer_buffer[i] << (16 - i * 8);

	v4l2_dbg(1, debug, tea->v4l2_dev, "shark2-read: %02x %02x %02x\n",
		 shark->transfer_buffer[0], shark->transfer_buffer[1],
		 shark->transfer_buffer[2]);

	*reg_ret = reg;
	return 0;
}

static struct radio_tea5777_ops shark_tea_ops = {
	.write_reg = shark_write_reg,
	.read_reg  = shark_read_reg,
};

static void shark_led_work(struct work_struct *work)
{
	struct shark_device *shark =
		container_of(work, struct shark_device, led_work);
	int i, res, brightness, actual_len;
	/*
	 * We use the v4l2_dev lock and registered bit to ensure the device
	 * does not get unplugged and unreffed while we're running.
	 */
	mutex_lock(&shark->tea.mutex);
	if (!video_is_registered(&shark->tea.vd))
		goto leave;

	for (i = 0; i < 2; i++) {
		if (!test_and_clear_bit(i, &shark->brightness_new))
			continue;

		brightness = atomic_read(&shark->brightness[i]);
		memset(shark->transfer_buffer, 0, TB_LEN);
		shark->transfer_buffer[0] = 0x83 + i;
		shark->transfer_buffer[1] = brightness;
		res = usb_interrupt_msg(shark->usbdev,
					usb_sndintpipe(shark->usbdev,
						       SHARK_OUT_EP),
					shark->transfer_buffer, TB_LEN,
					&actual_len, 1000);
		if (res < 0)
			v4l2_err(&shark->v4l2_dev, "set LED %s error: %d\n",
				 shark->led_names[i], res);
	}
leave:
	mutex_unlock(&shark->tea.mutex);
}

static void shark_led_set_blue(struct led_classdev *led_cdev,
			       enum led_brightness value)
{
	struct shark_device *shark =
		container_of(led_cdev, struct shark_device, leds[BLUE_LED]);

	atomic_set(&shark->brightness[BLUE_LED], value);
	set_bit(BLUE_LED, &shark->brightness_new);
	schedule_work(&shark->led_work);
}

static void shark_led_set_red(struct led_classdev *led_cdev,
			      enum led_brightness value)
{
	struct shark_device *shark =
		container_of(led_cdev, struct shark_device, leds[RED_LED]);

	atomic_set(&shark->brightness[RED_LED], value);
	set_bit(RED_LED, &shark->brightness_new);
	schedule_work(&shark->led_work);
}

static void usb_shark_disconnect(struct usb_interface *intf)
{
	struct v4l2_device *v4l2_dev = usb_get_intfdata(intf);
	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
	int i;

	mutex_lock(&shark->tea.mutex);
	v4l2_device_disconnect(&shark->v4l2_dev);
	radio_tea5777_exit(&shark->tea);
	mutex_unlock(&shark->tea.mutex);

	for (i = 0; i < NO_LEDS; i++)
		led_classdev_unregister(&shark->leds[i]);

	v4l2_device_put(&shark->v4l2_dev);
}

static void usb_shark_release(struct v4l2_device *v4l2_dev)
{
	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);

	cancel_work_sync(&shark->led_work);
	v4l2_device_unregister(&shark->v4l2_dev);
	kfree(shark->transfer_buffer);
	kfree(shark);
}

static int usb_shark_probe(struct usb_interface *intf,
			   const struct usb_device_id *id)
{
	struct shark_device *shark;
	int i, retval = -ENOMEM;

	shark = kzalloc(sizeof(struct shark_device), GFP_KERNEL);
	if (!shark)
		return retval;

	shark->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL);
	if (!shark->transfer_buffer)
		goto err_alloc_buffer;

	/*
	 * Work around a bug in usbhid/hid-core.c, where it leaves a dangling
	 * pointer in intfdata causing v4l2-device.c to not set it. Which
	 * results in usb_shark_disconnect() referencing the dangling pointer
	 *
	 * REMOVE (as soon as the above bug is fixed, patch submitted)
	 */
	usb_set_intfdata(intf, NULL);

	shark->v4l2_dev.release = usb_shark_release;
	v4l2_device_set_name(&shark->v4l2_dev, DRV_NAME, &shark_instance);
	retval = v4l2_device_register(&intf->dev, &shark->v4l2_dev);
	if (retval) {
		v4l2_err(&shark->v4l2_dev, "couldn't register v4l2_device\n");
		goto err_reg_dev;
	}

	shark->usbdev = interface_to_usbdev(intf);
	shark->tea.v4l2_dev = &shark->v4l2_dev;
	shark->tea.private_data = shark;
	shark->tea.ops = &shark_tea_ops;
	shark->tea.has_am = true;
	shark->tea.write_before_read = true;
	strlcpy(shark->tea.card, "Griffin radioSHARK2",
		sizeof(shark->tea.card));
	usb_make_path(shark->usbdev, shark->tea.bus_info,
		sizeof(shark->tea.bus_info));

	retval = radio_tea5777_init(&shark->tea, THIS_MODULE);
	if (retval) {
		v4l2_err(&shark->v4l2_dev, "couldn't init tea5777\n");
		goto err_init_tea;
	}

	INIT_WORK(&shark->led_work, shark_led_work);
	for (i = 0; i < NO_LEDS; i++) {
		shark->leds[i] = shark_led_templates[i];
		snprintf(shark->led_names[i], sizeof(shark->led_names[0]),
			 shark->leds[i].name, shark->v4l2_dev.name);
		shark->leds[i].name = shark->led_names[i];
		/*
		 * We don't fail the probe if we fail to register the leds,
		 * because once we've called radio_tea5777_init, the /dev/radio0
		 * node may be opened from userspace holding a reference to us!
		 *
		 * Note we cannot register the leds first instead as
		 * shark_led_work depends on the v4l2 mutex and registered bit.
		 */
		retval = led_classdev_register(&intf->dev, &shark->leds[i]);
		if (retval)
			v4l2_err(&shark->v4l2_dev,
				 "couldn't register led: %s\n",
				 shark->led_names[i]);
	}

	return 0;

err_init_tea:
	v4l2_device_unregister(&shark->v4l2_dev);
err_reg_dev:
	kfree(shark->transfer_buffer);
err_alloc_buffer:
	kfree(shark);

	return retval;
}

/* Specify the bcdDevice value, as the radioSHARK and radioSHARK2 share ids */
static struct usb_device_id usb_shark_device_table[] = {
	{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION |
			 USB_DEVICE_ID_MATCH_INT_CLASS,
	  .idVendor     = 0x077d,
	  .idProduct    = 0x627a,
	  .bcdDevice_lo = 0x0010,
	  .bcdDevice_hi = 0x0010,
	  .bInterfaceClass = 3,
	},
	{ }
};
MODULE_DEVICE_TABLE(usb, usb_shark_device_table);

static struct usb_driver usb_shark_driver = {
	.name			= DRV_NAME,
	.probe			= usb_shark_probe,
	.disconnect		= usb_shark_disconnect,
	.id_table		= usb_shark_device_table,
};
module_usb_driver(usb_shark_driver);
Commit	Line	Data
4faba767 HG	1	/*
	2	* Linux V4L2 radio driver for the Griffin radioSHARK2 USB radio receiver
	3	*
	4	* Note the radioSHARK2 offers the audio through a regular USB audio device,
	5	* this driver only handles the tuning.
	6	*
	7	* The info necessary to drive the shark2 was taken from the small userspace
	8	* shark2.c program by Hisaaki Shibata, which he kindly placed in the Public
	9	* Domain.
	10	*
	11	* Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>
	12	*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License as published by
	15	* the Free Software Foundation; either version 2 of the License, or
	16	* (at your option) any later version.
	17	*
	18	* This program is distributed in the hope that it will be useful,
	19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	* GNU General Public License for more details.
	22	*
	23	* You should have received a copy of the GNU General Public License
	24	* along with this program; if not, write to the Free Software
	25	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	26	*/
	27
	28	#include <linux/init.h>
	29	#include <linux/kernel.h>
	30	#include <linux/leds.h>
	31	#include <linux/module.h>
	32	#include <linux/slab.h>
	33	#include <linux/usb.h>
	34	#include <linux/workqueue.h>
	35	#include <media/v4l2-device.h>
	36	#include "radio-tea5777.h"
	37
	38	MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
	39	MODULE_DESCRIPTION("Griffin radioSHARK2, USB radio receiver driver");
	40	MODULE_LICENSE("GPL");
	41
	42	static int debug;
	43	module_param(debug, int, 0);
	44	MODULE_PARM_DESC(debug, "Debug level (0-1)");
	45
	46
	47	#define SHARK_IN_EP 0x83
	48	#define SHARK_OUT_EP 0x05
	49
	50	#define TB_LEN 7
	51	#define DRV_NAME "radioshark2"
	52
	53	#define v4l2_dev_to_shark(d) container_of(d, struct shark_device, v4l2_dev)
	54
	55	enum { BLUE_LED, RED_LED, NO_LEDS };
	56
	57	static void shark_led_set_blue(struct led_classdev *led_cdev,
	58	enum led_brightness value);
	59	static void shark_led_set_red(struct led_classdev *led_cdev,
	60	enum led_brightness value);
	61
	62	static const struct led_classdev shark_led_templates[NO_LEDS] = {
	63	[BLUE_LED] = {
	64	.name = "%s:blue:",
65	.brightness = LED_OFF,
66	.max_brightness = 127,
67	.brightness_set = shark_led_set_blue,
68	},
69	[RED_LED] = {
70	.name = "%s:red:",
71	.brightness = LED_OFF,
72	.max_brightness = 1,
73	.brightness_set = shark_led_set_red,
74	},
75	};
76
77	struct shark_device {
78	struct usb_device *usbdev;
79	struct v4l2_device v4l2_dev;
80	struct radio_tea5777 tea;
81
82	struct work_struct led_work;
83	struct led_classdev leds[NO_LEDS];
84	char led_names[NO_LEDS][32];
85	atomic_t brightness[NO_LEDS];
86	unsigned long brightness_new;
87
88	u8 *transfer_buffer;
89	};
90
91	static atomic_t shark_instance = ATOMIC_INIT(0);
92
93	static int shark_write_reg(struct radio_tea5777 *tea, u64 reg)
94	{
95	struct shark_device *shark = tea->private_data;
96	int i, res, actual_len;
97
98	memset(shark->transfer_buffer, 0, TB_LEN);
99	shark->transfer_buffer[0] = 0x81; /* Write register command */
100	for (i = 0; i < 6; i++)
101	shark->transfer_buffer[i + 1] = (reg >> (40 - i * 8)) & 0xff;
102
103	v4l2_dbg(1, debug, tea->v4l2_dev,
104	"shark2-write: %02x %02x %02x %02x %02x %02x %02x\n",
105	shark->transfer_buffer[0], shark->transfer_buffer[1],
106	shark->transfer_buffer[2], shark->transfer_buffer[3],
107	shark->transfer_buffer[4], shark->transfer_buffer[5],
108	shark->transfer_buffer[6]);
109
110	res = usb_interrupt_msg(shark->usbdev,
111	usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
112	shark->transfer_buffer, TB_LEN,
113	&actual_len, 1000);
114	if (res < 0) {
115	v4l2_err(tea->v4l2_dev, "write error: %d\n", res);
116	return res;
117	}
118
119	return 0;
120	}
121
122	static int shark_read_reg(struct radio_tea5777 tea, u32 reg_ret)
123	{
124	struct shark_device *shark = tea->private_data;
125	int i, res, actual_len;
126	u32 reg = 0;
127
128	memset(shark->transfer_buffer, 0, TB_LEN);
129	shark->transfer_buffer[0] = 0x82;
130	res = usb_interrupt_msg(shark->usbdev,
131	usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
132	shark->transfer_buffer, TB_LEN,
133	&actual_len, 1000);
134	if (res < 0) {
135	v4l2_err(tea->v4l2_dev, "request-read error: %d\n", res);
136	return res;
137	}
138
139	res = usb_interrupt_msg(shark->usbdev,
140	usb_rcvintpipe(shark->usbdev, SHARK_IN_EP),
141	shark->transfer_buffer, TB_LEN,
142	&actual_len, 1000);
143	if (res < 0) {
144	v4l2_err(tea->v4l2_dev, "read error: %d\n", res);
145	return res;
146	}
147
148	for (i = 0; i < 3; i++)
149	reg \|= shark->transfer_buffer[i] << (16 - i * 8);
150
151	v4l2_dbg(1, debug, tea->v4l2_dev, "shark2-read: %02x %02x %02x\n",
152	shark->transfer_buffer[0], shark->transfer_buffer[1],
153	shark->transfer_buffer[2]);
154
155	*reg_ret = reg;
156	return 0;
157	}
158
159	static struct radio_tea5777_ops shark_tea_ops = {
160	.write_reg = shark_write_reg,
161	.read_reg = shark_read_reg,
162	};
163
164	static void shark_led_work(struct work_struct *work)
165	{
166	struct shark_device *shark =
167	container_of(work, struct shark_device, led_work);
168	int i, res, brightness, actual_len;
169	/*
170	* We use the v4l2_dev lock and registered bit to ensure the device
171	* does not get unplugged and unreffed while we're running.
172	*/
173	mutex_lock(&shark->tea.mutex);
174	if (!video_is_registered(&shark->tea.vd))
175	goto leave;
176
177	for (i = 0; i < 2; i++) {
178	if (!test_and_clear_bit(i, &shark->brightness_new))
179	continue;
180
181	brightness = atomic_read(&shark->brightness[i]);
182	memset(shark->transfer_buffer, 0, TB_LEN);
183	shark->transfer_buffer[0] = 0x83 + i;
184	shark->transfer_buffer[1] = brightness;
185	res = usb_interrupt_msg(shark->usbdev,
186	usb_sndintpipe(shark->usbdev,
187	SHARK_OUT_EP),
188	shark->transfer_buffer, TB_LEN,
189	&actual_len, 1000);
190	if (res < 0)
191	v4l2_err(&shark->v4l2_dev, "set LED %s error: %d\n",
192	shark->led_names[i], res);
193	}
194	leave:
195	mutex_unlock(&shark->tea.mutex);
196	}
197
198	static void shark_led_set_blue(struct led_classdev *led_cdev,
199	enum led_brightness value)
200	{
201	struct shark_device *shark =
202	container_of(led_cdev, struct shark_device, leds[BLUE_LED]);
203
204	atomic_set(&shark->brightness[BLUE_LED], value);
205	set_bit(BLUE_LED, &shark->brightness_new);
206	schedule_work(&shark->led_work);
207	}
208
209	static void shark_led_set_red(struct led_classdev *led_cdev,
210	enum led_brightness value)
211	{
212	struct shark_device *shark =
213	container_of(led_cdev, struct shark_device, leds[RED_LED]);
214
215	atomic_set(&shark->brightness[RED_LED], value);
216	set_bit(RED_LED, &shark->brightness_new);
217	schedule_work(&shark->led_work);
218	}
219
220	static void usb_shark_disconnect(struct usb_interface *intf)
221	{
222	struct v4l2_device *v4l2_dev = usb_get_intfdata(intf);
223	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
224	int i;
225
226	mutex_lock(&shark->tea.mutex);
227	v4l2_device_disconnect(&shark->v4l2_dev);
228	radio_tea5777_exit(&shark->tea);
229	mutex_unlock(&shark->tea.mutex);
230
231	for (i = 0; i < NO_LEDS; i++)
232	led_classdev_unregister(&shark->leds[i]);
233
234	v4l2_device_put(&shark->v4l2_dev);
235	}
236
237	static void usb_shark_release(struct v4l2_device *v4l2_dev)
238	{
239	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
240
241	cancel_work_sync(&shark->led_work);
242	v4l2_device_unregister(&shark->v4l2_dev);
243	kfree(shark->transfer_buffer);
244	kfree(shark);
245	}
246
247	static int usb_shark_probe(struct usb_interface *intf,
248	const struct usb_device_id *id)
249	{
250	struct shark_device *shark;
251	int i, retval = -ENOMEM;
252
253	shark = kzalloc(sizeof(struct shark_device), GFP_KERNEL);
254	if (!shark)
255	return retval;
256
257	shark->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL);
258	if (!shark->transfer_buffer)
259	goto err_alloc_buffer;
260
261	/*
262	* Work around a bug in usbhid/hid-core.c, where it leaves a dangling
263	* pointer in intfdata causing v4l2-device.c to not set it. Which
264	* results in usb_shark_disconnect() referencing the dangling pointer
265	*
266	* REMOVE (as soon as the above bug is fixed, patch submitted)
267	*/
268	usb_set_intfdata(intf, NULL);
269
270	shark->v4l2_dev.release = usb_shark_release;
271	v4l2_device_set_name(&shark->v4l2_dev, DRV_NAME, &shark_instance);
272	retval = v4l2_device_register(&intf->dev, &shark->v4l2_dev);
273	if (retval) {
274	v4l2_err(&shark->v4l2_dev, "couldn't register v4l2_device\n");
275	goto err_reg_dev;
276	}
277
278	shark->usbdev = interface_to_usbdev(intf);
279	shark->tea.v4l2_dev = &shark->v4l2_dev;
280	shark->tea.private_data = shark;
281	shark->tea.ops = &shark_tea_ops;
282	shark->tea.has_am = true;
283	shark->tea.write_before_read = true;
284	strlcpy(shark->tea.card, "Griffin radioSHARK2",
285	sizeof(shark->tea.card));
286	usb_make_path(shark->usbdev, shark->tea.bus_info,
287	sizeof(shark->tea.bus_info));
288
289	retval = radio_tea5777_init(&shark->tea, THIS_MODULE);
290	if (retval) {
291	v4l2_err(&shark->v4l2_dev, "couldn't init tea5777\n");
292	goto err_init_tea;
293	}
294
295	INIT_WORK(&shark->led_work, shark_led_work);
296	for (i = 0; i < NO_LEDS; i++) {
297	shark->leds[i] = shark_led_templates[i];
298	snprintf(shark->led_names[i], sizeof(shark->led_names[0]),
299	shark->leds[i].name, shark->v4l2_dev.name);
300	shark->leds[i].name = shark->led_names[i];
301	/*
302	* We don't fail the probe if we fail to register the leds,
303	* because once we've called radio_tea5777_init, the /dev/radio0
304	* node may be opened from userspace holding a reference to us!
305	*
306	* Note we cannot register the leds first instead as
307	* shark_led_work depends on the v4l2 mutex and registered bit.
308	*/
309	retval = led_classdev_register(&intf->dev, &shark->leds[i]);
310	if (retval)
311	v4l2_err(&shark->v4l2_dev,
312	"couldn't register led: %s\n",
313	shark->led_names[i]);
314	}
315
316	return 0;
317
318	err_init_tea:
319	v4l2_device_unregister(&shark->v4l2_dev);
320	err_reg_dev:
321	kfree(shark->transfer_buffer);
322	err_alloc_buffer:
323	kfree(shark);
324
325	return retval;
326	}
327
328	/* Specify the bcdDevice value, as the radioSHARK and radioSHARK2 share ids */
329	static struct usb_device_id usb_shark_device_table[] = {
330	{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION \|
331	USB_DEVICE_ID_MATCH_INT_CLASS,
332	.idVendor = 0x077d,
333	.idProduct = 0x627a,
334	.bcdDevice_lo = 0x0010,
335	.bcdDevice_hi = 0x0010,
336	.bInterfaceClass = 3,
337	},
338	{ }
339	};
340	MODULE_DEVICE_TABLE(usb, usb_shark_device_table);
341
342	static struct usb_driver usb_shark_driver = {
343	.name = DRV_NAME,
344	.probe = usb_shark_probe,
345	.disconnect = usb_shark_disconnect,
346	.id_table = usb_shark_device_table,
347	};
348	module_usb_driver(usb_shark_driver);