[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.
*/

#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 <media/drv-intf/tea575x.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)

/* Note BLUE_IS_PULSE comes after NO_LEDS as it is a status bit, not a LED */
enum { BLUE_LED, BLUE_PULSE_LED, RED_LED, NO_LEDS, BLUE_IS_PULSE };

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 const 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);
	clear_bit(BLUE_IS_PULSE, &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);
	set_bit(BLUE_IS_PULSE, &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;

	atomic_set(&shark->brightness[BLUE_LED], 127);
	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);
}

static inline void shark_resume_leds(struct shark_device *shark)
{
	if (test_bit(BLUE_IS_PULSE, &shark->brightness_new))
		set_bit(BLUE_PULSE_LED, &shark->brightness_new);
	else
		set_bit(BLUE_LED, &shark->brightness_new);
	set_bit(RED_LED, &shark->brightness_new);
	schedule_work(&shark->led_work);
}
#else
static int shark_register_leds(struct shark_device *shark, struct device *dev)
{
	v4l2_warn(&shark->v4l2_dev,
		  "CONFIG_LEDS_CLASS not enabled, LED support disabled\n");
	return 0;
}
static inline void shark_unregister_leds(struct shark_device *shark) { }
static inline void shark_resume_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;
}

#ifdef CONFIG_PM
static int usb_shark_suspend(struct usb_interface *intf, pm_message_t message)
{
	return 0;
}

static int usb_shark_resume(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);
	snd_tea575x_set_freq(&shark->tea);
	mutex_unlock(&shark->tea.mutex);

	shark_resume_leds(shark);

	return 0;
}
#endif

/* 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,
#ifdef CONFIG_PM
	.suspend		= usb_shark_suspend,
	.resume			= usb_shark_resume,
	.reset_resume		= usb_shark_resume,
#endif
};
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.
8e2ce73e HG	22	*/
	23
	24	#include <linux/init.h>
	25	#include <linux/kernel.h>
	26	#include <linux/leds.h>
	27	#include <linux/module.h>
	28	#include <linux/slab.h>
	29	#include <linux/usb.h>
	30	#include <linux/workqueue.h>
	31	#include <media/v4l2-device.h>
d647f0b7	32	#include <media/drv-intf/tea575x.h>
8e2ce73e	33
3e3b92ca HG	34	#if defined(CONFIG_LEDS_CLASS) \|\| \
	35	(defined(CONFIG_LEDS_CLASS_MODULE) && defined(CONFIG_RADIO_SHARK_MODULE))
	36	#define SHARK_USE_LEDS 1
	37	#endif
	38
8e2ce73e HG	39	/*
	40	* Version Information
	41	*/
	42	MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
	43	MODULE_DESCRIPTION("Griffin radioSHARK, USB radio receiver driver");
	44	MODULE_LICENSE("GPL");
	45
	46	#define SHARK_IN_EP 0x83
	47	#define SHARK_OUT_EP 0x05
	48
	49	#define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */
	50	#define TEA575X_BIT_BAND_MASK (3<<20)
	51	#define TEA575X_BIT_BAND_FM (0<<20)
	52
	53	#define TB_LEN 6
	54	#define DRV_NAME "radioshark"
	55
	56	#define v4l2_dev_to_shark(d) container_of(d, struct shark_device, v4l2_dev)
	57
559c2009 HG	58	/* Note BLUE_IS_PULSE comes after NO_LEDS as it is a status bit, not a LED */
559c2009 HG	59	enum { BLUE_LED, BLUE_PULSE_LED, RED_LED, NO_LEDS, BLUE_IS_PULSE };
8e2ce73e	60
8e2ce73e HG	61	struct shark_device {
	62	struct usb_device *usbdev;
	63	struct v4l2_device v4l2_dev;
	64	struct snd_tea575x tea;
	65
3e3b92ca	66	#ifdef SHARK_USE_LEDS
8e2ce73e HG	67	struct work_struct led_work;
	68	struct led_classdev leds[NO_LEDS];
	69	char led_names[NO_LEDS][32];
	70	atomic_t brightness[NO_LEDS];
	71	unsigned long brightness_new;
3e3b92ca	72	#endif
8e2ce73e HG	73
	74	u8 *transfer_buffer;
	75	u32 last_val;
	76	};
	77
	78	static atomic_t shark_instance = ATOMIC_INIT(0);
	79
	80	static void shark_write_val(struct snd_tea575x *tea, u32 val)
	81	{
	82	struct shark_device *shark = tea->private_data;
	83	int i, res, actual_len;
	84
	85	/* Avoid unnecessary (slow) USB transfers */
	86	if (shark->last_val == val)
	87	return;
	88
	89	memset(shark->transfer_buffer, 0, TB_LEN);
	90	shark->transfer_buffer[0] = 0xc0; /* Write shift register command */
	91	for (i = 0; i < 4; i++)
	92	shark->transfer_buffer[i] \|= (val >> (24 - i * 8)) & 0xff;
	93
	94	res = usb_interrupt_msg(shark->usbdev,
	95	usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
	96	shark->transfer_buffer, TB_LEN,
	97	&actual_len, 1000);
	98	if (res >= 0)
	99	shark->last_val = val;
	100	else
	101	v4l2_err(&shark->v4l2_dev, "set-freq error: %d\n", res);
	102	}
	103
	104	static u32 shark_read_val(struct snd_tea575x *tea)
	105	{
	106	struct shark_device *shark = tea->private_data;
	107	int i, res, actual_len;
	108	u32 val = 0;
	109
	110	memset(shark->transfer_buffer, 0, TB_LEN);
	111	shark->transfer_buffer[0] = 0x80;
	112	res = usb_interrupt_msg(shark->usbdev,
	113	usb_sndintpipe(shark->usbdev, SHARK_OUT_EP),
	114	shark->transfer_buffer, TB_LEN,
	115	&actual_len, 1000);
	116	if (res < 0) {
	117	v4l2_err(&shark->v4l2_dev, "request-status error: %d\n", res);
	118	return shark->last_val;
	119	}
	120
	121	res = usb_interrupt_msg(shark->usbdev,
	122	usb_rcvintpipe(shark->usbdev, SHARK_IN_EP),
	123	shark->transfer_buffer, TB_LEN,
	124	&actual_len, 1000);
	125	if (res < 0) {
	126	v4l2_err(&shark->v4l2_dev, "get-status error: %d\n", res);
	127	return shark->last_val;
	128	}
	129
	130	for (i = 0; i < 4; i++)
	131	val \|= shark->transfer_buffer[i] << (24 - i * 8);
	132
	133	shark->last_val = val;
	134
	135	/*
	136	* The shark does not allow actually reading the stereo / mono pin :(
137	* So assume that when we're tuned to an FM station and mono has not
138	* been requested, that we're receiving stereo.
139	*/
140	if (((val & TEA575X_BIT_BAND_MASK) == TEA575X_BIT_BAND_FM) &&
141	!(val & TEA575X_BIT_MONO))
142	shark->tea.stereo = true;
143	else
144	shark->tea.stereo = false;
145
146	return val;
147	}
148
22dbec26	149	static const struct snd_tea575x_ops shark_tea_ops = {
8e2ce73e HG	150	.write_val = shark_write_val,
	151	.read_val = shark_read_val,
	152	};
	153
3e3b92ca	154	#ifdef SHARK_USE_LEDS
8e2ce73e HG	155	static void shark_led_work(struct work_struct *work)
	156	{
	157	struct shark_device *shark =
	158	container_of(work, struct shark_device, led_work);
	159	int i, res, brightness, actual_len;
	160
8e2ce73e HG	161	for (i = 0; i < 3; i++) {
	162	if (!test_and_clear_bit(i, &shark->brightness_new))
	163	continue;
	164
	165	brightness = atomic_read(&shark->brightness[i]);
	166	memset(shark->transfer_buffer, 0, TB_LEN);
	167	if (i != RED_LED) {
	168	shark->transfer_buffer[0] = 0xA0 + i;
	169	shark->transfer_buffer[1] = brightness;
	170	} else
	171	shark->transfer_buffer[0] = brightness ? 0xA9 : 0xA8;
	172	res = usb_interrupt_msg(shark->usbdev,
	173	usb_sndintpipe(shark->usbdev, 0x05),
	174	shark->transfer_buffer, TB_LEN,
	175	&actual_len, 1000);
	176	if (res < 0)
	177	v4l2_err(&shark->v4l2_dev, "set LED %s error: %d\n",
	178	shark->led_names[i], res);
	179	}
8e2ce73e HG	180	}
	181
	182	static void shark_led_set_blue(struct led_classdev *led_cdev,
	183	enum led_brightness value)
	184	{
	185	struct shark_device *shark =
	186	container_of(led_cdev, struct shark_device, leds[BLUE_LED]);
	187
	188	atomic_set(&shark->brightness[BLUE_LED], value);
	189	set_bit(BLUE_LED, &shark->brightness_new);
559c2009	190	clear_bit(BLUE_IS_PULSE, &shark->brightness_new);
8e2ce73e HG	191	schedule_work(&shark->led_work);
	192	}
	193
	194	static void shark_led_set_blue_pulse(struct led_classdev *led_cdev,
	195	enum led_brightness value)
	196	{
	197	struct shark_device *shark = container_of(led_cdev,
	198	struct shark_device, leds[BLUE_PULSE_LED]);
	199
	200	atomic_set(&shark->brightness[BLUE_PULSE_LED], 256 - value);
	201	set_bit(BLUE_PULSE_LED, &shark->brightness_new);
559c2009	202	set_bit(BLUE_IS_PULSE, &shark->brightness_new);
8e2ce73e HG	203	schedule_work(&shark->led_work);
	204	}
	205
	206	static void shark_led_set_red(struct led_classdev *led_cdev,
	207	enum led_brightness value)
	208	{
	209	struct shark_device *shark =
	210	container_of(led_cdev, struct shark_device, leds[RED_LED]);
	211
	212	atomic_set(&shark->brightness[RED_LED], value);
	213	set_bit(RED_LED, &shark->brightness_new);
	214	schedule_work(&shark->led_work);
	215	}
	216
3e3b92ca HG	217	static const struct led_classdev shark_led_templates[NO_LEDS] = {
	218	[BLUE_LED] = {
	219	.name = "%s:blue:",
	220	.brightness = LED_OFF,
	221	.max_brightness = 127,
	222	.brightness_set = shark_led_set_blue,
	223	},
	224	[BLUE_PULSE_LED] = {
	225	.name = "%s:blue-pulse:",
	226	.brightness = LED_OFF,
	227	.max_brightness = 255,
	228	.brightness_set = shark_led_set_blue_pulse,
	229	},
	230	[RED_LED] = {
	231	.name = "%s:red:",
	232	.brightness = LED_OFF,
	233	.max_brightness = 1,
	234	.brightness_set = shark_led_set_red,
	235	},
	236	};
	237
	238	static int shark_register_leds(struct shark_device shark, struct device dev)
	239	{
	240	int i, retval;
	241
559c2009	242	atomic_set(&shark->brightness[BLUE_LED], 127);
3e3b92ca HG	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	}
559c2009	269
812c083e	270	static inline void shark_resume_leds(struct shark_device *shark)
559c2009 HG	271	{
	272	if (test_bit(BLUE_IS_PULSE, &shark->brightness_new))
	273	set_bit(BLUE_PULSE_LED, &shark->brightness_new);
	274	else
	275	set_bit(BLUE_LED, &shark->brightness_new);
	276	set_bit(RED_LED, &shark->brightness_new);
	277	schedule_work(&shark->led_work);
	278	}
3e3b92ca HG	279	#else
	280	static int shark_register_leds(struct shark_device shark, struct device dev)
	281	{
	282	v4l2_warn(&shark->v4l2_dev,
0bb9121c	283	"CONFIG_LEDS_CLASS not enabled, LED support disabled\n");
3e3b92ca HG	284	return 0;
	285	}
	286	static inline void shark_unregister_leds(struct shark_device *shark) { }
559c2009	287	static inline void shark_resume_leds(struct shark_device *shark) { }
3e3b92ca HG	288	#endif
3e3b92ca HG	289
8e2ce73e HG	290	static void usb_shark_disconnect(struct usb_interface *intf)
	291	{
	292	struct v4l2_device *v4l2_dev = usb_get_intfdata(intf);
	293	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
8e2ce73e HG	294
	295	mutex_lock(&shark->tea.mutex);
	296	v4l2_device_disconnect(&shark->v4l2_dev);
	297	snd_tea575x_exit(&shark->tea);
	298	mutex_unlock(&shark->tea.mutex);
	299
3e3b92ca	300	shark_unregister_leds(shark);
cfc1b2a0	301
8e2ce73e HG	302	v4l2_device_put(&shark->v4l2_dev);
	303	}
	304
	305	static void usb_shark_release(struct v4l2_device *v4l2_dev)
	306	{
	307	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
	308
8e2ce73e HG	309	v4l2_device_unregister(&shark->v4l2_dev);
	310	kfree(shark->transfer_buffer);
	311	kfree(shark);
	312	}
	313
	314	static int usb_shark_probe(struct usb_interface *intf,
	315	const struct usb_device_id *id)
	316	{
	317	struct shark_device *shark;
3e3b92ca	318	int retval = -ENOMEM;
8e2ce73e HG	319
	320	shark = kzalloc(sizeof(struct shark_device), GFP_KERNEL);
	321	if (!shark)
	322	return retval;
	323
	324	shark->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL);
	325	if (!shark->transfer_buffer)
	326	goto err_alloc_buffer;
	327
8e2ce73e	328	v4l2_device_set_name(&shark->v4l2_dev, DRV_NAME, &shark_instance);
3e3b92ca HG	329
	330	retval = shark_register_leds(shark, &intf->dev);
	331	if (retval)
	332	goto err_reg_leds;
	333
	334	shark->v4l2_dev.release = usb_shark_release;
8e2ce73e HG	335	retval = v4l2_device_register(&intf->dev, &shark->v4l2_dev);
	336	if (retval) {
	337	v4l2_err(&shark->v4l2_dev, "couldn't register v4l2_device\n");
	338	goto err_reg_dev;
	339	}
	340
	341	shark->usbdev = interface_to_usbdev(intf);
	342	shark->tea.v4l2_dev = &shark->v4l2_dev;
	343	shark->tea.private_data = shark;
	344	shark->tea.radio_nr = -1;
	345	shark->tea.ops = &shark_tea_ops;
	346	shark->tea.cannot_mute = true;
fc488517	347	shark->tea.has_am = true;
8e2ce73e HG	348	strlcpy(shark->tea.card, "Griffin radioSHARK",
	349	sizeof(shark->tea.card));
	350	usb_make_path(shark->usbdev, shark->tea.bus_info,
	351	sizeof(shark->tea.bus_info));
	352
	353	retval = snd_tea575x_init(&shark->tea, THIS_MODULE);
	354	if (retval) {
	355	v4l2_err(&shark->v4l2_dev, "couldn't init tea5757\n");
	356	goto err_init_tea;
	357	}
	358
8e2ce73e HG	359	return 0;
	360
	361	err_init_tea:
	362	v4l2_device_unregister(&shark->v4l2_dev);
	363	err_reg_dev:
3e3b92ca HG	364	shark_unregister_leds(shark);
3e3b92ca HG	365	err_reg_leds:
8e2ce73e HG	366	kfree(shark->transfer_buffer);
	367	err_alloc_buffer:
	368	kfree(shark);
	369
	370	return retval;
	371	}
	372
559c2009	373	#ifdef CONFIG_PM
1f71927e	374	static int usb_shark_suspend(struct usb_interface *intf, pm_message_t message)
559c2009 HG	375	{
	376	return 0;
	377	}
	378
1f71927e	379	static int usb_shark_resume(struct usb_interface *intf)
559c2009 HG	380	{
	381	struct v4l2_device *v4l2_dev = usb_get_intfdata(intf);
	382	struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
	383
	384	mutex_lock(&shark->tea.mutex);
	385	snd_tea575x_set_freq(&shark->tea);
	386	mutex_unlock(&shark->tea.mutex);
	387
	388	shark_resume_leds(shark);
	389
	390	return 0;
	391	}
	392	#endif
	393
8e2ce73e HG	394	/* Specify the bcdDevice value, as the radioSHARK and radioSHARK2 share ids */
	395	static struct usb_device_id usb_shark_device_table[] = {
	396	{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION \|
	397	USB_DEVICE_ID_MATCH_INT_CLASS,
	398	.idVendor = 0x077d,
	399	.idProduct = 0x627a,
	400	.bcdDevice_lo = 0x0001,
	401	.bcdDevice_hi = 0x0001,
	402	.bInterfaceClass = 3,
	403	},
	404	{ }
	405	};
	406	MODULE_DEVICE_TABLE(usb, usb_shark_device_table);
	407
	408	static struct usb_driver usb_shark_driver = {
	409	.name = DRV_NAME,
	410	.probe = usb_shark_probe,
	411	.disconnect = usb_shark_disconnect,
	412	.id_table = usb_shark_device_table,
559c2009 HG	413	#ifdef CONFIG_PM
	414	.suspend = usb_shark_suspend,
	415	.resume = usb_shark_resume,
	416	.reset_resume = usb_shark_resume,
	417	#endif
8e2ce73e HG	418	};
8e2ce73e HG	419	module_usb_driver(usb_shark_driver);