[mirror_ubuntu-bionic-kernel.git] / drivers / media / radio / radio-gemtek-pci.c

/*
 ***************************************************************************
 *
 *     radio-gemtek-pci.c - Gemtek PCI Radio driver
 *     (C) 2001 Vladimir Shebordaev <vshebordaev@mail.ru>
 *
 ***************************************************************************
 *
 *     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., 675 Mass Ave, Cambridge, MA 02139,
 *     USA.
 *
 ***************************************************************************
 *
 *     Gemtek Corp still silently refuses to release any specifications
 *     of their multimedia devices, so the protocol still has to be
 *     reverse engineered.
 *
 *     The v4l code was inspired by Jonas Munsin's  Gemtek serial line
 *     radio device driver.
 *
 *     Please, let me know if this piece of code was useful :)
 *
 *     TODO: multiple device support and portability were not tested
 *
 ***************************************************************************
 */

#include <linux/types.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/videodev.h>
#include <media/v4l2-common.h>
#include <linux/errno.h>

#include <asm/io.h>
#include <asm/uaccess.h>

#ifndef PCI_VENDOR_ID_GEMTEK
#define PCI_VENDOR_ID_GEMTEK 0x5046
#endif

#ifndef PCI_DEVICE_ID_GEMTEK_PR103
#define PCI_DEVICE_ID_GEMTEK_PR103 0x1001
#endif

#ifndef GEMTEK_PCI_RANGE_LOW
#define GEMTEK_PCI_RANGE_LOW (87*16000)
#endif

#ifndef GEMTEK_PCI_RANGE_HIGH
#define GEMTEK_PCI_RANGE_HIGH (108*16000)
#endif

#ifndef TRUE
#define TRUE (1)
#endif

#ifndef FALSE
#define FALSE (0)
#endif

struct gemtek_pci_card {
	struct video_device *videodev;

	u32 iobase;
	u32 length;
	u8  chiprev;
	u16 model;

	u32 current_frequency;
	u8  mute;
};

static const char rcsid[] = "$Id: radio-gemtek-pci.c,v 1.1 2001/07/23 08:08:16 ted Exp ted $";

static int nr_radio = -1;

static inline u8 gemtek_pci_out( u16 value, u32 port )
{
	outw( value, port );

	return (u8)value;
}

#define _b0( v ) *((u8 *)&v)
static void __gemtek_pci_cmd( u16 value, u32 port, u8 *last_byte, int keep )
{
	register u8 byte = *last_byte;

	if ( !value ) {
		if ( !keep )
			value = (u16)port;
		byte &= 0xfd;
	} else
		byte |= 2;

	_b0( value ) = byte;
	outw( value, port );
	byte |= 1;
	_b0( value ) = byte;
	outw( value, port );
	byte &= 0xfe;
	_b0( value ) = byte;
	outw( value, port );

	*last_byte = byte;
}

static inline void gemtek_pci_nil( u32 port, u8 *last_byte )
{
	__gemtek_pci_cmd( 0x00, port, last_byte, FALSE );
}

static inline void gemtek_pci_cmd( u16 cmd, u32 port, u8 *last_byte )
{
	__gemtek_pci_cmd( cmd, port, last_byte, TRUE );
}

static void gemtek_pci_setfrequency( struct gemtek_pci_card *card, unsigned long frequency )
{
	register int i;
	register u32 value = frequency / 200 + 856;
	register u16 mask = 0x8000;
	u8 last_byte;
	u32 port = card->iobase;

	last_byte = gemtek_pci_out( 0x06, port );

	i = 0;
	do {
		gemtek_pci_nil( port, &last_byte );
		i++;
	} while ( i < 9 );

	i = 0;
	do {
		gemtek_pci_cmd( value & mask, port, &last_byte );
		mask >>= 1;
		i++;
	} while ( i < 16 );

	outw( 0x10, port );
}


static inline void gemtek_pci_mute( struct gemtek_pci_card *card )
{
	outb( 0x1f, card->iobase );
	card->mute = TRUE;
}

static inline void gemtek_pci_unmute( struct gemtek_pci_card *card )
{
	if ( card->mute ) {
		gemtek_pci_setfrequency( card, card->current_frequency );
		card->mute = FALSE;
	}
}

static inline unsigned int gemtek_pci_getsignal( struct gemtek_pci_card *card )
{
	return ( inb( card->iobase ) & 0x08 ) ? 0 : 1;
}

static int gemtek_pci_do_ioctl(struct inode *inode, struct file *file,
			       unsigned int cmd, void *arg)
{
	struct video_device *dev = video_devdata(file);
	struct gemtek_pci_card *card = dev->priv;

	switch ( cmd ) {
		case VIDIOCGCAP:
		{
			struct video_capability *c = arg;

			memset(c,0,sizeof(*c));
			c->type = VID_TYPE_TUNER;
			c->channels = 1;
			c->audios = 1;
			strcpy( c->name, "Gemtek PCI Radio" );
			return 0;
		}

		case VIDIOCGTUNER:
		{
			struct video_tuner *t = arg;

			if ( t->tuner )
				return -EINVAL;

			t->rangelow = GEMTEK_PCI_RANGE_LOW;
			t->rangehigh = GEMTEK_PCI_RANGE_HIGH;
			t->flags = VIDEO_TUNER_LOW;
			t->mode = VIDEO_MODE_AUTO;
			t->signal = 0xFFFF * gemtek_pci_getsignal( card );
			strcpy( t->name, "FM" );
			return 0;
		}

		case VIDIOCSTUNER:
		{
			struct video_tuner *t = arg;
			if ( t->tuner )
				return -EINVAL;
			return 0;
		}

		case VIDIOCGFREQ:
		{
			unsigned long *freq = arg;
			*freq = card->current_frequency;
			return 0;
		}
		case VIDIOCSFREQ:
		{
			unsigned long *freq = arg;

			if ( (*freq < GEMTEK_PCI_RANGE_LOW) ||
			     (*freq > GEMTEK_PCI_RANGE_HIGH) )
				return -EINVAL;

			gemtek_pci_setfrequency( card, *freq );
			card->current_frequency = *freq;
			card->mute = FALSE;

			return 0;
		}

		case VIDIOCGAUDIO:
		{
			struct video_audio *a = arg;

			memset( a, 0, sizeof( *a ) );
			a->flags |= VIDEO_AUDIO_MUTABLE;
			a->volume = 1;
			a->step = 65535;
			strcpy( a->name, "Radio" );
			return 0;
		}

		case VIDIOCSAUDIO:
		{
			struct video_audio *a = arg;

			if ( a->audio )
				return -EINVAL;

			if ( a->flags & VIDEO_AUDIO_MUTE )
				gemtek_pci_mute( card );
			else
				gemtek_pci_unmute( card );
			return 0;
		}

		default:
			return -ENOIOCTLCMD;
	}
}

static int gemtek_pci_ioctl(struct inode *inode, struct file *file,
			    unsigned int cmd, unsigned long arg)
{
	return video_usercopy(inode, file, cmd, arg, gemtek_pci_do_ioctl);
}

enum {
	GEMTEK_PR103
};

static char *card_names[] __devinitdata = {
	"GEMTEK_PR103"
};

static struct pci_device_id gemtek_pci_id[] =
{
	{ PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 },
	{ 0 }
};

MODULE_DEVICE_TABLE( pci, gemtek_pci_id );

static int mx = 1;

static struct file_operations gemtek_pci_fops = {
	.owner		= THIS_MODULE,
	.open           = video_exclusive_open,
	.release        = video_exclusive_release,
	.ioctl		= gemtek_pci_ioctl,
	.compat_ioctl	= v4l_compat_ioctl32,
	.llseek         = no_llseek,
};

static struct video_device vdev_template = {
	.owner         = THIS_MODULE,
	.name          = "Gemtek PCI Radio",
	.type          = VID_TYPE_TUNER,
	.hardware      = VID_HARDWARE_GEMTEK,
	.fops          = &gemtek_pci_fops,
};

static int __devinit gemtek_pci_probe( struct pci_dev *pci_dev, const struct pci_device_id *pci_id )
{
	struct gemtek_pci_card *card;
	struct video_device *devradio;

	if ( (card = kzalloc( sizeof( struct gemtek_pci_card ), GFP_KERNEL )) == NULL ) {
		printk( KERN_ERR "gemtek_pci: out of memory\n" );
		return -ENOMEM;
	}

	if ( pci_enable_device( pci_dev ) )
		goto err_pci;

	card->iobase = pci_resource_start( pci_dev, 0 );
	card->length = pci_resource_len( pci_dev, 0 );

	if ( request_region( card->iobase, card->length, card_names[pci_id->driver_data] ) == NULL ) {
		printk( KERN_ERR "gemtek_pci: i/o port already in use\n" );
		goto err_pci;
	}

	pci_read_config_byte( pci_dev, PCI_REVISION_ID, &card->chiprev );
	pci_read_config_word( pci_dev, PCI_SUBSYSTEM_ID, &card->model );

	pci_set_drvdata( pci_dev, card );

	if ( (devradio = kmalloc( sizeof( struct video_device ), GFP_KERNEL )) == NULL ) {
		printk( KERN_ERR "gemtek_pci: out of memory\n" );
		goto err_video;
	}
	*devradio = vdev_template;

	if ( video_register_device( devradio, VFL_TYPE_RADIO , nr_radio) == -1 ) {
		kfree( devradio );
		goto err_video;
	}

	card->videodev = devradio;
	devradio->priv = card;
	gemtek_pci_mute( card );

	printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
		card->chiprev, card->iobase, card->iobase + card->length - 1 );

	return 0;

err_video:
	release_region( card->iobase, card->length );

err_pci:
	kfree( card );
	return -ENODEV;
}

static void __devexit gemtek_pci_remove( struct pci_dev *pci_dev )
{
	struct gemtek_pci_card *card = pci_get_drvdata( pci_dev );

	video_unregister_device( card->videodev );
	kfree( card->videodev );

	release_region( card->iobase, card->length );

	if ( mx )
		gemtek_pci_mute( card );

	kfree( card );

	pci_set_drvdata( pci_dev, NULL );
}

static struct pci_driver gemtek_pci_driver =
{
	.name		= "gemtek_pci",
	.id_table	= gemtek_pci_id,
	.probe		= gemtek_pci_probe,
	.remove		= __devexit_p(gemtek_pci_remove),
};

static int __init gemtek_pci_init_module( void )
{
	return pci_register_driver( &gemtek_pci_driver );
}

static void __exit gemtek_pci_cleanup_module( void )
{
	return pci_unregister_driver( &gemtek_pci_driver );
}

MODULE_AUTHOR( "Vladimir Shebordaev <vshebordaev@mail.ru>" );
MODULE_DESCRIPTION( "The video4linux driver for the Gemtek PCI Radio Card" );
MODULE_LICENSE("GPL");

module_param(mx, bool, 0);
MODULE_PARM_DESC( mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not" );
module_param(nr_radio, int, 0);
MODULE_PARM_DESC( nr_radio, "video4linux device number to use");

module_init( gemtek_pci_init_module );
module_exit( gemtek_pci_cleanup_module );
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	***************************************************************************
4286c6f6	3	*
1da177e4 LT	4	* radio-gemtek-pci.c - Gemtek PCI Radio driver
	5	* (C) 2001 Vladimir Shebordaev <vshebordaev@mail.ru>
	6	*
	7	***************************************************************************
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License as
	11	* published by the Free Software Foundation; either version 2 of
	12	* the License, or (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public
	20	* License along with this program; if not, write to the Free
	21	* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
	22	* USA.
	23	*
	24	***************************************************************************
	25	*
	26	* Gemtek Corp still silently refuses to release any specifications
	27	* of their multimedia devices, so the protocol still has to be
	28	* reverse engineered.
	29	*
	30	* The v4l code was inspired by Jonas Munsin's Gemtek serial line
	31	* radio device driver.
	32	*
	33	* Please, let me know if this piece of code was useful :)
4286c6f6	34	*
1da177e4 LT	35	* TODO: multiple device support and portability were not tested
	36	*
	37	***************************************************************************
	38	*/
	39
1da177e4 LT	40	#include <linux/types.h>
	41	#include <linux/list.h>
	42	#include <linux/module.h>
	43	#include <linux/init.h>
	44	#include <linux/pci.h>
	45	#include <linux/videodev.h>
5e87efa3	46	#include <media/v4l2-common.h>
1da177e4 LT	47	#include <linux/errno.h>
	48
	49	#include <asm/io.h>
	50	#include <asm/uaccess.h>
	51
	52	#ifndef PCI_VENDOR_ID_GEMTEK
	53	#define PCI_VENDOR_ID_GEMTEK 0x5046
	54	#endif
	55
	56	#ifndef PCI_DEVICE_ID_GEMTEK_PR103
	57	#define PCI_DEVICE_ID_GEMTEK_PR103 0x1001
	58	#endif
	59
	60	#ifndef GEMTEK_PCI_RANGE_LOW
	61	#define GEMTEK_PCI_RANGE_LOW (87*16000)
	62	#endif
	63
	64	#ifndef GEMTEK_PCI_RANGE_HIGH
	65	#define GEMTEK_PCI_RANGE_HIGH (108*16000)
	66	#endif
	67
	68	#ifndef TRUE
	69	#define TRUE (1)
	70	#endif
	71
4286c6f6	72	#ifndef FALSE
1da177e4 LT	73	#define FALSE (0)
	74	#endif
	75
	76	struct gemtek_pci_card {
	77	struct video_device *videodev;
4286c6f6	78
1da177e4 LT	79	u32 iobase;
	80	u32 length;
	81	u8 chiprev;
	82	u16 model;
4286c6f6	83
1da177e4 LT	84	u32 current_frequency;
	85	u8 mute;
	86	};
	87
	88	static const char rcsid[] = "$Id: radio-gemtek-pci.c,v 1.1 2001/07/23 08:08:16 ted Exp ted $";
	89
	90	static int nr_radio = -1;
	91
	92	static inline u8 gemtek_pci_out( u16 value, u32 port )
	93	{
	94	outw( value, port );
	95
	96	return (u8)value;
	97	}
	98
4286c6f6	99	#define _b0( v ) ((u8 )&v)
1da177e4 LT	100	static void __gemtek_pci_cmd( u16 value, u32 port, u8 *last_byte, int keep )
	101	{
	102	register u8 byte = *last_byte;
	103
	104	if ( !value ) {
	105	if ( !keep )
	106	value = (u16)port;
4286c6f6	107	byte &= 0xfd;
1da177e4 LT	108	} else
	109	byte \|= 2;
	110
	111	_b0( value ) = byte;
	112	outw( value, port );
	113	byte \|= 1;
	114	_b0( value ) = byte;
	115	outw( value, port );
	116	byte &= 0xfe;
	117	_b0( value ) = byte;
	118	outw( value, port );
4286c6f6	119
1da177e4 LT	120	*last_byte = byte;
	121	}
	122
	123	static inline void gemtek_pci_nil( u32 port, u8 *last_byte )
	124	{
	125	__gemtek_pci_cmd( 0x00, port, last_byte, FALSE );
	126	}
	127
	128	static inline void gemtek_pci_cmd( u16 cmd, u32 port, u8 *last_byte )
	129	{
	130	__gemtek_pci_cmd( cmd, port, last_byte, TRUE );
	131	}
	132
	133	static void gemtek_pci_setfrequency( struct gemtek_pci_card *card, unsigned long frequency )
	134	{
	135	register int i;
	136	register u32 value = frequency / 200 + 856;
	137	register u16 mask = 0x8000;
	138	u8 last_byte;
	139	u32 port = card->iobase;
	140
	141	last_byte = gemtek_pci_out( 0x06, port );
	142
	143	i = 0;
	144	do {
	145	gemtek_pci_nil( port, &last_byte );
	146	i++;
	147	} while ( i < 9 );
	148
	149	i = 0;
	150	do {
	151	gemtek_pci_cmd( value & mask, port, &last_byte );
	152	mask >>= 1;
	153	i++;
	154	} while ( i < 16 );
	155
	156	outw( 0x10, port );
	157	}
	158
	159
	160	static inline void gemtek_pci_mute( struct gemtek_pci_card *card )
	161	{
	162	outb( 0x1f, card->iobase );
	163	card->mute = TRUE;
	164	}
	165
	166	static inline void gemtek_pci_unmute( struct gemtek_pci_card *card )
	167	{
	168	if ( card->mute ) {
	169	gemtek_pci_setfrequency( card, card->current_frequency );
	170	card->mute = FALSE;
	171	}
	172	}
	173
	174	static inline unsigned int gemtek_pci_getsignal( struct gemtek_pci_card *card )
	175	{
	176	return ( inb( card->iobase ) & 0x08 ) ? 0 : 1;
	177	}
	178
	179	static int gemtek_pci_do_ioctl(struct inode inode, struct file file,
	180	unsigned int cmd, void *arg)
	181	{
	182	struct video_device *dev = video_devdata(file);
	183	struct gemtek_pci_card *card = dev->priv;
184
185	switch ( cmd ) {
186	case VIDIOCGCAP:
187	{
188	struct video_capability *c = arg;
189
190	memset(c,0,sizeof(*c));
191	c->type = VID_TYPE_TUNER;
192	c->channels = 1;
193	c->audios = 1;
194	strcpy( c->name, "Gemtek PCI Radio" );
195	return 0;
4286c6f6	196	}
1da177e4 LT	197
	198	case VIDIOCGTUNER:
	199	{
	200	struct video_tuner *t = arg;
	201
4286c6f6	202	if ( t->tuner )
1da177e4 LT	203	return -EINVAL;
	204
	205	t->rangelow = GEMTEK_PCI_RANGE_LOW;
	206	t->rangehigh = GEMTEK_PCI_RANGE_HIGH;
	207	t->flags = VIDEO_TUNER_LOW;
	208	t->mode = VIDEO_MODE_AUTO;
	209	t->signal = 0xFFFF * gemtek_pci_getsignal( card );
	210	strcpy( t->name, "FM" );
	211	return 0;
	212	}
	213
	214	case VIDIOCSTUNER:
	215	{
	216	struct video_tuner *t = arg;
	217	if ( t->tuner )
	218	return -EINVAL;
	219	return 0;
	220	}
	221
	222	case VIDIOCGFREQ:
	223	{
	224	unsigned long *freq = arg;
	225	*freq = card->current_frequency;
	226	return 0;
	227	}
	228	case VIDIOCSFREQ:
	229	{
	230	unsigned long *freq = arg;
4286c6f6	231
1da177e4 LT	232	if ( (*freq < GEMTEK_PCI_RANGE_LOW) \|\|
	233	(*freq > GEMTEK_PCI_RANGE_HIGH) )
	234	return -EINVAL;
	235
	236	gemtek_pci_setfrequency( card, *freq );
	237	card->current_frequency = *freq;
	238	card->mute = FALSE;
	239
	240	return 0;
	241	}
4286c6f6	242
1da177e4	243	case VIDIOCGAUDIO:
4286c6f6	244	{
1da177e4 LT	245	struct video_audio *a = arg;
	246
	247	memset( a, 0, sizeof( *a ) );
	248	a->flags \|= VIDEO_AUDIO_MUTABLE;
	249	a->volume = 1;
	250	a->step = 65535;
	251	strcpy( a->name, "Radio" );
4286c6f6	252	return 0;
1da177e4 LT	253	}
	254
	255	case VIDIOCSAUDIO:
	256	{
	257	struct video_audio *a = arg;
	258
4286c6f6	259	if ( a->audio )
1da177e4 LT	260	return -EINVAL;
1da177e4 LT	261
4286c6f6	262	if ( a->flags & VIDEO_AUDIO_MUTE )
1da177e4 LT	263	gemtek_pci_mute( card );
	264	else
	265	gemtek_pci_unmute( card );
	266	return 0;
	267	}
	268
	269	default:
	270	return -ENOIOCTLCMD;
	271	}
	272	}
	273
	274	static int gemtek_pci_ioctl(struct inode inode, struct file file,
	275	unsigned int cmd, unsigned long arg)
	276	{
	277	return video_usercopy(inode, file, cmd, arg, gemtek_pci_do_ioctl);
	278	}
	279
	280	enum {
	281	GEMTEK_PR103
	282	};
	283
	284	static char *card_names[] __devinitdata = {
	285	"GEMTEK_PR103"
	286	};
	287
	288	static struct pci_device_id gemtek_pci_id[] =
	289	{
	290	{ PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103,
	291	PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 },
	292	{ 0 }
	293	};
	294
	295	MODULE_DEVICE_TABLE( pci, gemtek_pci_id );
	296
	297	static int mx = 1;
	298
	299	static struct file_operations gemtek_pci_fops = {
	300	.owner = THIS_MODULE,
	301	.open = video_exclusive_open,
	302	.release = video_exclusive_release,
	303	.ioctl = gemtek_pci_ioctl,
0d0fbf81	304	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	305	.llseek = no_llseek,
	306	};
	307
	308	static struct video_device vdev_template = {
	309	.owner = THIS_MODULE,
	310	.name = "Gemtek PCI Radio",
	311	.type = VID_TYPE_TUNER,
	312	.hardware = VID_HARDWARE_GEMTEK,
	313	.fops = &gemtek_pci_fops,
	314	};
	315
	316	static int __devinit gemtek_pci_probe( struct pci_dev pci_dev, const struct pci_device_id pci_id )
	317	{
	318	struct gemtek_pci_card *card;
	319	struct video_device *devradio;
	320
7408187d	321	if ( (card = kzalloc( sizeof( struct gemtek_pci_card ), GFP_KERNEL )) == NULL ) {
1da177e4 LT	322	printk( KERN_ERR "gemtek_pci: out of memory\n" );
	323	return -ENOMEM;
	324	}
1da177e4	325
4286c6f6	326	if ( pci_enable_device( pci_dev ) )
1da177e4	327	goto err_pci;
4286c6f6	328
1da177e4 LT	329	card->iobase = pci_resource_start( pci_dev, 0 );
	330	card->length = pci_resource_len( pci_dev, 0 );
	331
	332	if ( request_region( card->iobase, card->length, card_names[pci_id->driver_data] ) == NULL ) {
	333	printk( KERN_ERR "gemtek_pci: i/o port already in use\n" );
	334	goto err_pci;
	335	}
	336
	337	pci_read_config_byte( pci_dev, PCI_REVISION_ID, &card->chiprev );
	338	pci_read_config_word( pci_dev, PCI_SUBSYSTEM_ID, &card->model );
	339
	340	pci_set_drvdata( pci_dev, card );
4286c6f6	341
1da177e4 LT	342	if ( (devradio = kmalloc( sizeof( struct video_device ), GFP_KERNEL )) == NULL ) {
	343	printk( KERN_ERR "gemtek_pci: out of memory\n" );
	344	goto err_video;
	345	}
	346	*devradio = vdev_template;
	347
	348	if ( video_register_device( devradio, VFL_TYPE_RADIO , nr_radio) == -1 ) {
	349	kfree( devradio );
	350	goto err_video;
	351	}
	352
	353	card->videodev = devradio;
	354	devradio->priv = card;
	355	gemtek_pci_mute( card );
	356
4286c6f6	357	printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
1da177e4 LT	358	card->chiprev, card->iobase, card->iobase + card->length - 1 );
	359
	360	return 0;
	361
	362	err_video:
	363	release_region( card->iobase, card->length );
	364
	365	err_pci:
	366	kfree( card );
4286c6f6	367	return -ENODEV;
1da177e4 LT	368	}
	369
	370	static void __devexit gemtek_pci_remove( struct pci_dev *pci_dev )
	371	{
	372	struct gemtek_pci_card *card = pci_get_drvdata( pci_dev );
	373
	374	video_unregister_device( card->videodev );
	375	kfree( card->videodev );
	376
	377	release_region( card->iobase, card->length );
4286c6f6	378
1da177e4 LT	379	if ( mx )
	380	gemtek_pci_mute( card );
	381
	382	kfree( card );
4286c6f6	383
1da177e4 LT	384	pci_set_drvdata( pci_dev, NULL );
	385	}
	386
	387	static struct pci_driver gemtek_pci_driver =
	388	{
	389	.name = "gemtek_pci",
	390	.id_table = gemtek_pci_id,
	391	.probe = gemtek_pci_probe,
	392	.remove = __devexit_p(gemtek_pci_remove),
	393	};
	394
	395	static int __init gemtek_pci_init_module( void )
	396	{
9bfab8ce	397	return pci_register_driver( &gemtek_pci_driver );
1da177e4 LT	398	}
	399
	400	static void __exit gemtek_pci_cleanup_module( void )
	401	{
	402	return pci_unregister_driver( &gemtek_pci_driver );
	403	}
	404
	405	MODULE_AUTHOR( "Vladimir Shebordaev <vshebordaev@mail.ru>" );
	406	MODULE_DESCRIPTION( "The video4linux driver for the Gemtek PCI Radio Card" );
	407	MODULE_LICENSE("GPL");
	408
	409	module_param(mx, bool, 0);
	410	MODULE_PARM_DESC( mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not" );
	411	module_param(nr_radio, int, 0);
	412	MODULE_PARM_DESC( nr_radio, "video4linux device number to use");
	413
	414	module_init( gemtek_pci_init_module );
	415	module_exit( gemtek_pci_cleanup_module );
	416