[mirror_ubuntu-artful-kernel.git] / drivers / media / radio / radio-shark.c

/*
 * Linux V4L2 radio driver for the Griffin radioSHARK USB radio receiver
 *
 * Note the radioSHARK offers the audio through a regular USB audio device,
 * this driver only handles the tuning.
 *
 * The info necessary to drive the shark was taken from the small userspace
 * shark.c program by Michael Rolig, 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 <sound/tea575x-tuner.h>

#if defined(CONFIG_LEDS_CLASS) || \
    (defined(CONFIG_LEDS_CLASS_MODULE) && defined(CONFIG_RADIO_SHARK_MODULE))
#define SHARK_USE_LEDS 1
#endif

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

#define SHARK_IN_EP		0x83
#define SHARK_OUT_EP		0x05

#define TEA575X_BIT_MONO	(1<<22)		/* 0 = stereo, 1 = mono */
#define TEA575X_BIT_BAND_MASK	(3<<20)
#define TEA575X_BIT_BAND_FM	(0<<20)

#define TB_LEN 6
#define DRV_NAME "radioshark"

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

enum { BLUE_LED, BLUE_PULSE_LED, RED_LED, NO_LEDS };

struct shark_device {
	struct usb_device *usbdev;
	struct v4l2_device v4l2_dev;
	struct snd_tea575x tea;

#ifdef SHARK_USE_LEDS
	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;
#endif

	u8 *transfer_buffer;
	u32 last_val;
};

static atomic_t shark_instance = ATOMIC_INIT(0);

static void shark_write_val(struct snd_tea575x *tea, u32 val)
{
	struct shark_device *shark = tea->private_data;
	int i, res, actual_len;

	/* Avoid unnecessary (slow) USB transfers */
	if (shark->last_val == val)
		return;

	memset(shark->transfer_buffer, 0, TB_LEN);
	shark->transfer_buffer[0] = 0xc0; /* Write shift register command */
	for (i = 0; i < 4; i++)
		shark->transfer_buffer[i] |= (val >> (24 - i * 8)) & 0xff;

	res = usb_interrupt_msg(shark->usbdev,
				usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
				shark->transfer_buffer, TB_LEN,
				&actual_len, 1000);
	if (res >= 0)
		shark->last_val = val;
	else
		v4l2_err(&shark->v4l2_dev, "set-freq error: %d\n", res);
}

static u32 shark_read_val(struct snd_tea575x *tea)
{
	struct shark_device *shark = tea->private_data;
	int i, res, actual_len;
	u32 val = 0;

	memset(shark->transfer_buffer, 0, TB_LEN);
	shark->transfer_buffer[0] = 0x80;
	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, "request-status error: %d\n", res);
		return shark->last_val;
	}

	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(&shark->v4l2_dev, "get-status error: %d\n", res);
		return shark->last_val;
	}

	for (i = 0; i < 4; i++)
		val |= shark->transfer_buffer[i] << (24 - i * 8);

	shark->last_val = val;

	/*
	 * The shark does not allow actually reading the stereo / mono pin :(
	 * So assume that when we're tuned to an FM station and mono has not
	 * been requested, that we're receiving stereo.
	 */
	if (((val & TEA575X_BIT_BAND_MASK) == TEA575X_BIT_BAND_FM) &&
	    !(val & TEA575X_BIT_MONO))
		shark->tea.stereo = true;
	else
		shark->tea.stereo = false;

	return val;
}

static struct snd_tea575x_ops shark_tea_ops = {
	.write_val = shark_write_val,
	.read_val  = shark_read_val,
};

#ifdef SHARK_USE_LEDS
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;

	for (i = 0; i < 3; i++) {
		if (!test_and_clear_bit(i, &shark->brightness_new))
			continue;

		brightness = atomic_read(&shark->brightness[i]);
		memset(shark->transfer_buffer, 0, TB_LEN);
		if (i != RED_LED) {
			shark->transfer_buffer[0] = 0xA0 + i;
			shark->transfer_buffer[1] = brightness;
		} else
			shark->transfer_buffer[0] = brightness ? 0xA9 : 0xA8;
		res = usb_interrupt_msg(shark->usbdev,
					usb_sndintpipe(shark->usbdev, 0x05),
					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);
	}
}

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_blue_pulse(struct led_classdev *led_cdev,
				     enum led_brightness value)
{
	struct shark_device *shark = container_of(led_cdev,
				struct shark_device, leds[BLUE_PULSE_LED]);

	atomic_set(&shark->brightness[BLUE_PULSE_LED], 256 - value);
	set_bit(BLUE_PULSE_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 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,
	},
	[BLUE_PULSE_LED] = {
		.name		= "%s:blue-pulse:",
		.brightness	= LED_OFF,
		.max_brightness = 255,
		.brightness_set = shark_led_set_blue_pulse,
	},
	[RED_LED] = {
		.name		= "%s:red:",
		.brightness	= LED_OFF,
		.max_brightness = 1,
		.brightness_set = shark_led_set_red,
	},
};

static int shark_register_leds(struct shark_device *shark, struct device *dev)
{
	int i, retval;

	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];
		retval = led_classdev_register(dev, &shark->leds[i]);
		if (retval) {
			v4l2_err(&shark->v4l2_dev,
				 "couldn't register led: %s\n",
				 shark->led_names[i]);
			return retval;
		}
	}
	return 0;
}

static void shark_unregister_leds(struct shark_device *shark)
{
	int i;

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

	cancel_work_sync(&shark->led_work);
}
#else
static int shark_register_leds(struct shark_device *shark, struct device *dev)
{
	v4l2_warn(&shark->v4l2_dev,
		  "CONFIG_LED_CLASS not enabled, LED support disabled\n");
	return 0;
}
static inline void shark_unregister_leds(struct shark_device *shark) { }
#endif

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);

	mutex_lock(&shark->tea.mutex);
	v4l2_device_disconnect(&shark->v4l2_dev);
	snd_tea575x_exit(&shark->tea);
	mutex_unlock(&shark->tea.mutex);

	shark_unregister_leds(shark);

	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);

	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 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;

	v4l2_device_set_name(&shark->v4l2_dev, DRV_NAME, &shark_instance);

	retval = shark_register_leds(shark, &intf->dev);
	if (retval)
		goto err_reg_leds;

	shark->v4l2_dev.release = usb_shark_release;
	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.radio_nr = -1;
	shark->tea.ops = &shark_tea_ops;
	shark->tea.cannot_mute = true;
	shark->tea.has_am = true;
	strlcpy(shark->tea.card, "Griffin radioSHARK",
		sizeof(shark->tea.card));
	usb_make_path(shark->usbdev, shark->tea.bus_info,
		sizeof(shark->tea.bus_info));

	retval = snd_tea575x_init(&shark->tea, THIS_MODULE);
	if (retval) {
		v4l2_err(&shark->v4l2_dev, "couldn't init tea5757\n");
		goto err_init_tea;
	}

	return 0;

err_init_tea:
	v4l2_device_unregister(&shark->v4l2_dev);
err_reg_dev:
	shark_unregister_leds(shark);
err_reg_leds:
	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 = 0x0001,
	  .bcdDevice_hi = 0x0001,
	  .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
8e2ce73e HG	1	/*
	2	* Linux V4L2 radio driver for the Griffin radioSHARK USB radio receiver
	3	*
	4	* Note the radioSHARK offers the audio through a regular USB audio device,
	5	* this driver only handles the tuning.
	6	*
	7	* The info necessary to drive the shark was taken from the small userspace
	8	* shark.c program by Michael Rolig, 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 <sound/tea575x-tuner.h>
	37
3e3b92ca HG	38	#if defined(CONFIG_LEDS_CLASS) \|\| \
	39	(defined(CONFIG_LEDS_CLASS_MODULE) && defined(CONFIG_RADIO_SHARK_MODULE))
	40	#define SHARK_USE_LEDS 1
	41	#endif
	42
8e2ce73e HG	43	/*
	44	* Version Information
	45	*/
	46	MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
	47	MODULE_DESCRIPTION("Griffin radioSHARK, USB radio receiver driver");
	48	MODULE_LICENSE("GPL");
	49
	50	#define SHARK_IN_EP 0x83
	51	#define SHARK_OUT_EP 0x05
	52
	53	#define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */
	54	#define TEA575X_BIT_BAND_MASK (3<<20)
	55	#define TEA575X_BIT_BAND_FM (0<<20)
	56
	57	#define TB_LEN 6
	58	#define DRV_NAME "radioshark"
	59
	60	#define v4l2_dev_to_shark(d) container_of(d, struct shark_device, v4l2_dev)
	61
	62	enum { BLUE_LED, BLUE_PULSE_LED, RED_LED, NO_LEDS };
	63
8e2ce73e HG	64	struct shark_device {
	65	struct usb_device *usbdev;
	66	struct v4l2_device v4l2_dev;
	67	struct snd_tea575x tea;
	68
3e3b92ca	69	#ifdef SHARK_USE_LEDS
8e2ce73e HG	70	struct work_struct led_work;
	71	struct led_classdev leds[NO_LEDS];
	72	char led_names[NO_LEDS][32];
	73	atomic_t brightness[NO_LEDS];
	74	unsigned long brightness_new;
3e3b92ca	75	#endif
8e2ce73e HG	76
	77	u8 *transfer_buffer;
	78	u32 last_val;
	79	};
	80
	81	static atomic_t shark_instance = ATOMIC_INIT(0);
	82
	83	static void shark_write_val(struct snd_tea575x *tea, u32 val)
	84	{
	85	struct shark_device *shark = tea->private_data;
	86	int i, res, actual_len;
	87
	88	/* Avoid unnecessary (slow) USB transfers */
	89	if (shark->last_val == val)
	90	return;
	91
	92	memset(shark->transfer_buffer, 0, TB_LEN);
	93	shark->transfer_buffer[0] = 0xc0; /* Write shift register command */
	94	for (i = 0; i < 4; i++)
	95	shark->transfer_buffer[i] \|= (val >> (24 - i * 8)) & 0xff;
	96
	97	res = usb_interrupt_msg(shark->usbdev,
	98	usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
	99	shark->transfer_buffer, TB_LEN,
	100	&actual_len, 1000);
	101	if (res >= 0)
	102	shark->last_val = val;
	103	else
	104	v4l2_err(&shark->v4l2_dev, "set-freq error: %d\n", res);
	105	}
	106
	107	static u32 shark_read_val(struct snd_tea575x *tea)
	108	{
	109	struct shark_device *shark = tea->private_data;
	110	int i, res, actual_len;
	111	u32 val = 0;
	112
	113	memset(shark->transfer_buffer, 0, TB_LEN);
	114	shark->transfer_buffer[0] = 0x80;
	115	res = usb_interrupt_msg(shark->usbdev,
	116	usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
	117	shark->transfer_buffer, TB_LEN,
	118	&actual_len, 1000);
	119	if (res < 0) {
	120	v4l2_err(&shark->v4l2_dev, "request-status error: %d\n", res);
	121	return shark->last_val;
	122	}
	123
	124	res = usb_interrupt_msg(shark->usbdev,
	125	usb_rcvintpipe(shark->usbdev, SHARK_IN_EP),
	126	shark->transfer_buffer, TB_LEN,
	127	&actual_len, 1000);
	128	if (res < 0) {
	129	v4l2_err(&shark->v4l2_dev, "get-status error: %d\n", res);
	130	return shark->last_val;
	131	}
	132
	133	for (i = 0; i < 4; i++)
	134	val \|= shark->transfer_buffer[i] << (24 - i * 8);
	135
	136	shark->last_val = val;
	137
	138	/*
	139	* The shark does not allow actually reading the stereo / mono pin :(
140	* So assume that when we're tuned to an FM station and mono has not
141	* been requested, that we're receiving stereo.
142	*/
143	if (((val & TEA575X_BIT_BAND_MASK) == TEA575X_BIT_BAND_FM) &&
144	!(val & TEA575X_BIT_MONO))
145	shark->tea.stereo = true;
146	else
147	shark->tea.stereo = false;
148
149	return val;
150	}
151
152	static struct snd_tea575x_ops shark_tea_ops = {
153	.write_val = shark_write_val,
154	.read_val = shark_read_val,
155	};
156
3e3b92ca	157	#ifdef SHARK_USE_LEDS
8e2ce73e HG	158	static void shark_led_work(struct work_struct *work)
	159	{
	160	struct shark_device *shark =
	161	container_of(work, struct shark_device, led_work);
	162	int i, res, brightness, actual_len;
	163
8e2ce73e HG	164	for (i = 0; i < 3; i++) {
	165	if (!test_and_clear_bit(i, &shark->brightness_new))
	166	continue;
	167
	168	brightness = atomic_read(&shark->brightness[i]);
	169	memset(shark->transfer_buffer, 0, TB_LEN);
	170	if (i != RED_LED) {
	171	shark->transfer_buffer[0] = 0xA0 + i;
	172	shark->transfer_buffer[1] = brightness;
	173	} else
	174	shark->transfer_buffer[0] = brightness ? 0xA9 : 0xA8;
	175	res = usb_interrupt_msg(shark->usbdev,
	176	usb_sndintpipe(shark->usbdev, 0x05),
	177	shark->transfer_buffer, TB_LEN,
	178	&actual_len, 1000);
	179	if (res < 0)
	180	v4l2_err(&shark->v4l2_dev, "set LED %s error: %d\n",
	181	shark->led_names[i], res);
	182	}
8e2ce73e HG	183	}
	184
	185	static void shark_led_set_blue(struct led_classdev *led_cdev,
	186	enum led_brightness value)
	187	{
	188	struct shark_device *shark =
	189	container_of(led_cdev, struct shark_device, leds[BLUE_LED]);
	190
	191	atomic_set(&shark->brightness[BLUE_LED], value);
	192	set_bit(BLUE_LED, &shark->brightness_new);
	193	schedule_work(&shark->led_work);
	194	}
	195
	196	static void shark_led_set_blue_pulse(struct led_classdev *led_cdev,
	197	enum led_brightness value)
	198	{
	199	struct shark_device *shark = container_of(led_cdev,
	200	struct shark_device, leds[BLUE_PULSE_LED]);
	201
	202	atomic_set(&shark->brightness[BLUE_PULSE_LED], 256 - value);
	203	set_bit(BLUE_PULSE_LED, &shark->brightness_new);
	204	schedule_work(&shark->led_work);
	205	}
	206
	207	static void shark_led_set_red(struct led_classdev *led_cdev,
	208	enum led_brightness value)
	209	{
	210	struct shark_device *shark =
	211	container_of(led_cdev, struct shark_device, leds[RED_LED]);
	212
	213	atomic_set(&shark->brightness[RED_LED], value);
	214	set_bit(RED_LED, &shark->brightness_new);
	215	schedule_work(&shark->led_work);
	216	}
	217
3e3b92ca HG	218	static const struct led_classdev shark_led_templates[NO_LEDS] = {
	219	[BLUE_LED] = {
	220	.name = "%s:blue:",
	221	.brightness = LED_OFF,
	222	.max_brightness = 127,
	223	.brightness_set = shark_led_set_blue,
	224	},
	225	[BLUE_PULSE_LED] = {
	226	.name = "%s:blue-pulse:",
	227	.brightness = LED_OFF,
	228	.max_brightness = 255,
	229	.brightness_set = shark_led_set_blue_pulse,
	230	},
	231	[RED_LED] = {
	232	.name = "%s:red:",
	233	.brightness = LED_OFF,
	234	.max_brightness = 1,
	235	.brightness_set = shark_led_set_red,
	236	},
	237	};
	238
	239	static int shark_register_leds(struct shark_device shark, struct device dev)
	240	{
	241	int i, retval;
	242
	243	INIT_WORK(&shark->led_work, shark_led_work);
	244	for (i = 0; i < NO_LEDS; i++) {
	245	shark->leds[i] = shark_led_templates[i];
	246	snprintf(shark->led_names[i], sizeof(shark->led_names[0]),
	247	shark->leds[i].name, shark->v4l2_dev.name);
	248	shark->leds[i].name = shark->led_names[i];
	249	retval = led_classdev_register(dev, &shark->leds[i]);
	250	if (retval) {
	251	v4l2_err(&shark->v4l2_dev,
	252	"couldn't register led: %s\n",
	253	shark->led_names[i]);
	254	return retval;
	255	}
	256	}
	257	return 0;
	258	}
	259
	260	static void shark_unregister_leds(struct shark_device *shark)
	261	{
	262	int i;
	263
	264	for (i = 0; i < NO_LEDS; i++)
	265	led_classdev_unregister(&shark->leds[i]);
	266
	267	cancel_work_sync(&shark->led_work);
	268	}
	269	#else
	270	static int shark_register_leds(struct shark_device shark, struct device dev)
	271	{
	272	v4l2_warn(&shark->v4l2_dev,
	273	"CONFIG_LED_CLASS not enabled, LED support disabled\n");
	274	return 0;
	275	}
	276	static inline void shark_unregister_leds(struct shark_device *shark) { }
	277	#endif
	278
8e2ce73e HG	279	static void usb_shark_disconnect(struct usb_interface *intf)
	280	{
	281	struct v4l2_device *v4l2_dev = usb_get_intfdata(intf);
	282	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
8e2ce73e HG	283
	284	mutex_lock(&shark->tea.mutex);
	285	v4l2_device_disconnect(&shark->v4l2_dev);
	286	snd_tea575x_exit(&shark->tea);
	287	mutex_unlock(&shark->tea.mutex);
	288
3e3b92ca	289	shark_unregister_leds(shark);
cfc1b2a0	290
8e2ce73e HG	291	v4l2_device_put(&shark->v4l2_dev);
	292	}
	293
	294	static void usb_shark_release(struct v4l2_device *v4l2_dev)
	295	{
	296	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
	297
8e2ce73e HG	298	v4l2_device_unregister(&shark->v4l2_dev);
	299	kfree(shark->transfer_buffer);
	300	kfree(shark);
	301	}
	302
	303	static int usb_shark_probe(struct usb_interface *intf,
	304	const struct usb_device_id *id)
	305	{
	306	struct shark_device *shark;
3e3b92ca	307	int retval = -ENOMEM;
8e2ce73e HG	308
	309	shark = kzalloc(sizeof(struct shark_device), GFP_KERNEL);
	310	if (!shark)
	311	return retval;
	312
	313	shark->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL);
	314	if (!shark->transfer_buffer)
	315	goto err_alloc_buffer;
	316
8e2ce73e	317	v4l2_device_set_name(&shark->v4l2_dev, DRV_NAME, &shark_instance);
3e3b92ca HG	318
	319	retval = shark_register_leds(shark, &intf->dev);
	320	if (retval)
	321	goto err_reg_leds;
	322
	323	shark->v4l2_dev.release = usb_shark_release;
8e2ce73e HG	324	retval = v4l2_device_register(&intf->dev, &shark->v4l2_dev);
	325	if (retval) {
	326	v4l2_err(&shark->v4l2_dev, "couldn't register v4l2_device\n");
	327	goto err_reg_dev;
	328	}
	329
	330	shark->usbdev = interface_to_usbdev(intf);
	331	shark->tea.v4l2_dev = &shark->v4l2_dev;
	332	shark->tea.private_data = shark;
	333	shark->tea.radio_nr = -1;
	334	shark->tea.ops = &shark_tea_ops;
	335	shark->tea.cannot_mute = true;
fc488517	336	shark->tea.has_am = true;
8e2ce73e HG	337	strlcpy(shark->tea.card, "Griffin radioSHARK",
	338	sizeof(shark->tea.card));
	339	usb_make_path(shark->usbdev, shark->tea.bus_info,
	340	sizeof(shark->tea.bus_info));
	341
	342	retval = snd_tea575x_init(&shark->tea, THIS_MODULE);
	343	if (retval) {
	344	v4l2_err(&shark->v4l2_dev, "couldn't init tea5757\n");
	345	goto err_init_tea;
	346	}
	347
8e2ce73e HG	348	return 0;
	349
	350	err_init_tea:
	351	v4l2_device_unregister(&shark->v4l2_dev);
	352	err_reg_dev:
3e3b92ca HG	353	shark_unregister_leds(shark);
3e3b92ca HG	354	err_reg_leds:
8e2ce73e HG	355	kfree(shark->transfer_buffer);
	356	err_alloc_buffer:
	357	kfree(shark);
	358
	359	return retval;
	360	}
	361
	362	/* Specify the bcdDevice value, as the radioSHARK and radioSHARK2 share ids */
	363	static struct usb_device_id usb_shark_device_table[] = {
	364	{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION \|
	365	USB_DEVICE_ID_MATCH_INT_CLASS,
	366	.idVendor = 0x077d,
	367	.idProduct = 0x627a,
	368	.bcdDevice_lo = 0x0001,
	369	.bcdDevice_hi = 0x0001,
	370	.bInterfaceClass = 3,
	371	},
	372	{ }
	373	};
	374	MODULE_DEVICE_TABLE(usb, usb_shark_device_table);
	375
	376	static struct usb_driver usb_shark_driver = {
	377	.name = DRV_NAME,
	378	.probe = usb_shark_probe,
	379	.disconnect = usb_shark_disconnect,
	380	.id_table = usb_shark_device_table,
	381	};
	382	module_usb_driver(usb_shark_driver);