[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
 *
 *     Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 *
 ***************************************************************************
 */

#include <linux/types.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <linux/errno.h>

#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#define RADIO_VERSION KERNEL_VERSION(0,0,2)

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,
	},{
		.id            = V4L2_CID_AUDIO_VOLUME,
		.name          = "Volume",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535,
		.default_value = 0xff,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}
};

#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

struct gemtek_pci_card {
	struct video_device *videodev;

	u32 iobase;
	u32 length;

	u32 current_frequency;
	u8  mute;
};

static int nr_radio = -1;
static unsigned long in_use;

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 vidioc_querycap(struct file *file, void *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-gemtek-pci", sizeof(v->driver));
	strlcpy(v->card, "GemTek PCI Radio", sizeof(v->card));
	sprintf(v->bus_info, "ISA");
	v->version = RADIO_VERSION;
	v->capabilities = V4L2_CAP_TUNER;
	return 0;
}

static int vidioc_g_tuner(struct file *file, void *priv,
					struct v4l2_tuner *v)
{
	struct gemtek_pci_card *card = video_drvdata(file);

	if (v->index > 0)
		return -EINVAL;

	strcpy(v->name, "FM");
	v->type = V4L2_TUNER_RADIO;
	v->rangelow = GEMTEK_PCI_RANGE_LOW;
	v->rangehigh = GEMTEK_PCI_RANGE_HIGH;
	v->rxsubchans = V4L2_TUNER_SUB_MONO;
	v->capability = V4L2_TUNER_CAP_LOW;
	v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = 0xffff * gemtek_pci_getsignal(card);
	return 0;
}

static int vidioc_s_tuner(struct file *file, void *priv,
					struct v4l2_tuner *v)
{
	if (v->index > 0)
		return -EINVAL;
	return 0;
}

static int vidioc_s_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct gemtek_pci_card *card = video_drvdata(file);

	if ( (f->frequency < GEMTEK_PCI_RANGE_LOW) ||
			(f->frequency > GEMTEK_PCI_RANGE_HIGH) )
		return -EINVAL;
	gemtek_pci_setfrequency(card, f->frequency);
	card->current_frequency = f->frequency;
	card->mute = false;
	return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct gemtek_pci_card *card = video_drvdata(file);

	f->type = V4L2_TUNER_RADIO;
	f->frequency = card->current_frequency;
	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)
{
	struct gemtek_pci_card *card = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		ctrl->value = card->mute;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		if (card->mute)
			ctrl->value = 0;
		else
			ctrl->value = 65535;
		return 0;
	}
	return -EINVAL;
}

static int vidioc_s_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct gemtek_pci_card *card = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->value)
			gemtek_pci_mute(card);
		else
			gemtek_pci_unmute(card);
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		if (ctrl->value)
			gemtek_pci_unmute(card);
		else
			gemtek_pci_mute(card);
		return 0;
	}
	return -EINVAL;
}

static int vidioc_g_audio(struct file *file, void *priv,
					struct v4l2_audio *a)
{
	if (a->index > 1)
		return -EINVAL;

	strcpy(a->name, "Radio");
	a->capability = V4L2_AUDCAP_STEREO;
	return 0;
}

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)
{
	if (i != 0)
		return -EINVAL;
	return 0;
}

static int vidioc_s_audio(struct file *file, void *priv,
					struct v4l2_audio *a)
{
	if (a->index != 0)
		return -EINVAL;
	return 0;
}

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 int gemtek_pci_exclusive_open(struct file *file)
{
	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
}

static int gemtek_pci_exclusive_release(struct file *file)
{
	clear_bit(0, &in_use);
	return 0;
}

static const struct v4l2_file_operations gemtek_pci_fops = {
	.owner		= THIS_MODULE,
	.open           = gemtek_pci_exclusive_open,
	.release        = gemtek_pci_exclusive_release,
	.ioctl		= video_ioctl2,
};

static const struct v4l2_ioctl_ops gemtek_pci_ioctl_ops = {
	.vidioc_querycap    = vidioc_querycap,
	.vidioc_g_tuner     = vidioc_g_tuner,
	.vidioc_s_tuner     = vidioc_s_tuner,
	.vidioc_g_audio     = vidioc_g_audio,
	.vidioc_s_audio     = vidioc_s_audio,
	.vidioc_g_input     = vidioc_g_input,
	.vidioc_s_input     = vidioc_s_input,
	.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,
};

static struct video_device vdev_template = {
	.name          	= "Gemtek PCI Radio",
	.fops          	= &gemtek_pci_fops,
	.ioctl_ops 	= &gemtek_pci_ioctl_ops,
	.release	= video_device_release_empty,
};

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_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) < 0) {
		kfree( devradio );
		goto err_video;
	}

	card->videodev = devradio;
	video_set_drvdata(devradio, card);
	gemtek_pci_mute( card );

	printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
		pci_dev->revision, 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 )
{
	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
1da177e4 LT	36	*
52afbc2f MCC	37	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
52afbc2f MCC	38	*
1da177e4 LT	39	***************************************************************************
	40	*/
	41
1da177e4 LT	42	#include <linux/types.h>
	43	#include <linux/list.h>
	44	#include <linux/module.h>
	45	#include <linux/init.h>
	46	#include <linux/pci.h>
52afbc2f	47	#include <linux/videodev2.h>
5e87efa3	48	#include <media/v4l2-common.h>
35ea11ff	49	#include <media/v4l2-ioctl.h>
1da177e4 LT	50	#include <linux/errno.h>
1da177e4 LT	51
52afbc2f MCC	52	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	53	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	54
	55	static struct v4l2_queryctrl radio_qctrl[] = {
	56	{
	57	.id = V4L2_CID_AUDIO_MUTE,
	58	.name = "Mute",
	59	.minimum = 0,
	60	.maximum = 1,
	61	.default_value = 1,
	62	.type = V4L2_CTRL_TYPE_BOOLEAN,
	63	},{
	64	.id = V4L2_CID_AUDIO_VOLUME,
	65	.name = "Volume",
	66	.minimum = 0,
	67	.maximum = 65535,
	68	.step = 65535,
	69	.default_value = 0xff,
	70	.type = V4L2_CTRL_TYPE_INTEGER,
	71	}
	72	};
	73
1da177e4 LT	74	#include <asm/io.h>
	75	#include <asm/uaccess.h>
	76
	77	#ifndef PCI_VENDOR_ID_GEMTEK
	78	#define PCI_VENDOR_ID_GEMTEK 0x5046
	79	#endif
	80
	81	#ifndef PCI_DEVICE_ID_GEMTEK_PR103
	82	#define PCI_DEVICE_ID_GEMTEK_PR103 0x1001
	83	#endif
	84
	85	#ifndef GEMTEK_PCI_RANGE_LOW
	86	#define GEMTEK_PCI_RANGE_LOW (87*16000)
	87	#endif
	88
	89	#ifndef GEMTEK_PCI_RANGE_HIGH
	90	#define GEMTEK_PCI_RANGE_HIGH (108*16000)
	91	#endif
	92
1da177e4 LT	93	struct gemtek_pci_card {
1da177e4 LT	94	struct video_device *videodev;
4286c6f6	95
1da177e4 LT	96	u32 iobase;
1da177e4 LT	97	u32 length;
4286c6f6	98
1da177e4 LT	99	u32 current_frequency;
	100	u8 mute;
	101	};
	102
1da177e4	103	static int nr_radio = -1;
3ca685aa	104	static unsigned long in_use;
1da177e4 LT	105
	106	static inline u8 gemtek_pci_out( u16 value, u32 port )
	107	{
	108	outw( value, port );
	109
	110	return (u8)value;
	111	}
	112
4286c6f6	113	#define _b0( v ) ((u8 )&v)
1da177e4 LT	114	static void __gemtek_pci_cmd( u16 value, u32 port, u8 *last_byte, int keep )
	115	{
	116	register u8 byte = *last_byte;
	117
	118	if ( !value ) {
	119	if ( !keep )
	120	value = (u16)port;
4286c6f6	121	byte &= 0xfd;
1da177e4 LT	122	} else
	123	byte \|= 2;
	124
	125	_b0( value ) = byte;
	126	outw( value, port );
	127	byte \|= 1;
	128	_b0( value ) = byte;
	129	outw( value, port );
	130	byte &= 0xfe;
	131	_b0( value ) = byte;
	132	outw( value, port );
4286c6f6	133
1da177e4 LT	134	*last_byte = byte;
	135	}
	136
	137	static inline void gemtek_pci_nil( u32 port, u8 *last_byte )
	138	{
fd4bc445	139	__gemtek_pci_cmd( 0x00, port, last_byte, false );
1da177e4 LT	140	}
	141
	142	static inline void gemtek_pci_cmd( u16 cmd, u32 port, u8 *last_byte )
	143	{
fd4bc445	144	__gemtek_pci_cmd( cmd, port, last_byte, true );
1da177e4 LT	145	}
	146
	147	static void gemtek_pci_setfrequency( struct gemtek_pci_card *card, unsigned long frequency )
	148	{
	149	register int i;
	150	register u32 value = frequency / 200 + 856;
	151	register u16 mask = 0x8000;
	152	u8 last_byte;
	153	u32 port = card->iobase;
	154
	155	last_byte = gemtek_pci_out( 0x06, port );
	156
	157	i = 0;
	158	do {
	159	gemtek_pci_nil( port, &last_byte );
	160	i++;
	161	} while ( i < 9 );
	162
	163	i = 0;
	164	do {
	165	gemtek_pci_cmd( value & mask, port, &last_byte );
	166	mask >>= 1;
	167	i++;
	168	} while ( i < 16 );
	169
	170	outw( 0x10, port );
	171	}
	172
	173
	174	static inline void gemtek_pci_mute( struct gemtek_pci_card *card )
	175	{
	176	outb( 0x1f, card->iobase );
fd4bc445	177	card->mute = true;
1da177e4 LT	178	}
	179
	180	static inline void gemtek_pci_unmute( struct gemtek_pci_card *card )
	181	{
	182	if ( card->mute ) {
	183	gemtek_pci_setfrequency( card, card->current_frequency );
fd4bc445	184	card->mute = false;
1da177e4 LT	185	}
	186	}
	187
	188	static inline unsigned int gemtek_pci_getsignal( struct gemtek_pci_card *card )
	189	{
	190	return ( inb( card->iobase ) & 0x08 ) ? 0 : 1;
	191	}
	192
6f66446c DL	193	static int vidioc_querycap(struct file file, void priv,
	194	struct v4l2_capability *v)
	195	{
	196	strlcpy(v->driver, "radio-gemtek-pci", sizeof(v->driver));
	197	strlcpy(v->card, "GemTek PCI Radio", sizeof(v->card));
	198	sprintf(v->bus_info, "ISA");
	199	v->version = RADIO_VERSION;
	200	v->capabilities = V4L2_CAP_TUNER;
	201	return 0;
	202	}
	203
	204	static int vidioc_g_tuner(struct file file, void priv,
	205	struct v4l2_tuner *v)
1da177e4	206	{
c170ecf4	207	struct gemtek_pci_card *card = video_drvdata(file);
1da177e4	208
6f66446c DL	209	if (v->index > 0)
	210	return -EINVAL;
	211
	212	strcpy(v->name, "FM");
	213	v->type = V4L2_TUNER_RADIO;
	214	v->rangelow = GEMTEK_PCI_RANGE_LOW;
	215	v->rangehigh = GEMTEK_PCI_RANGE_HIGH;
	216	v->rxsubchans = V4L2_TUNER_SUB_MONO;
	217	v->capability = V4L2_TUNER_CAP_LOW;
	218	v->audmode = V4L2_TUNER_MODE_MONO;
	219	v->signal = 0xffff * gemtek_pci_getsignal(card);
	220	return 0;
	221	}
1da177e4	222
6f66446c DL	223	static int vidioc_s_tuner(struct file file, void priv,
	224	struct v4l2_tuner *v)
	225	{
	226	if (v->index > 0)
	227	return -EINVAL;
	228	return 0;
	229	}
1da177e4	230
6f66446c DL	231	static int vidioc_s_frequency(struct file file, void priv,
	232	struct v4l2_frequency *f)
	233	{
c170ecf4	234	struct gemtek_pci_card *card = video_drvdata(file);
52afbc2f	235
6f66446c DL	236	if ( (f->frequency < GEMTEK_PCI_RANGE_LOW) \|\|
	237	(f->frequency > GEMTEK_PCI_RANGE_HIGH) )
	238	return -EINVAL;
	239	gemtek_pci_setfrequency(card, f->frequency);
	240	card->current_frequency = f->frequency;
	241	card->mute = false;
	242	return 0;
	243	}
52afbc2f	244
6f66446c DL	245	static int vidioc_g_frequency(struct file file, void priv,
	246	struct v4l2_frequency *f)
	247	{
c170ecf4	248	struct gemtek_pci_card *card = video_drvdata(file);
52afbc2f	249
6f66446c DL	250	f->type = V4L2_TUNER_RADIO;
	251	f->frequency = card->current_frequency;
	252	return 0;
	253	}
1da177e4	254
6f66446c DL	255	static int vidioc_queryctrl(struct file file, void priv,
	256	struct v4l2_queryctrl *qc)
	257	{
	258	int i;
	259	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	260	if (qc->id && qc->id == radio_qctrl[i].id) {
	261	memcpy(qc, &(radio_qctrl[i]),
	262	sizeof(*qc));
1da177e4 LT	263	return 0;
1da177e4 LT	264	}
6f66446c DL	265	}
	266	return -EINVAL;
	267	}
	268
	269	static int vidioc_g_ctrl(struct file file, void priv,
	270	struct v4l2_control *ctrl)
	271	{
c170ecf4	272	struct gemtek_pci_card *card = video_drvdata(file);
4286c6f6	273
6f66446c DL	274	switch (ctrl->id) {
	275	case V4L2_CID_AUDIO_MUTE:
	276	ctrl->value = card->mute;
	277	return 0;
	278	case V4L2_CID_AUDIO_VOLUME:
	279	if (card->mute)
	280	ctrl->value = 0;
	281	else
	282	ctrl->value = 65535;
	283	return 0;
	284	}
	285	return -EINVAL;
	286	}
1da177e4	287
6f66446c DL	288	static int vidioc_s_ctrl(struct file file, void priv,
	289	struct v4l2_control *ctrl)
	290	{
c170ecf4	291	struct gemtek_pci_card *card = video_drvdata(file);
1da177e4	292
6f66446c DL	293	switch (ctrl->id) {
	294	case V4L2_CID_AUDIO_MUTE:
	295	if (ctrl->value)
	296	gemtek_pci_mute(card);
	297	else
	298	gemtek_pci_unmute(card);
	299	return 0;
	300	case V4L2_CID_AUDIO_VOLUME:
	301	if (ctrl->value)
	302	gemtek_pci_unmute(card);
	303	else
	304	gemtek_pci_mute(card);
	305	return 0;
1da177e4	306	}
6f66446c DL	307	return -EINVAL;
	308	}
	309
	310	static int vidioc_g_audio(struct file file, void priv,
	311	struct v4l2_audio *a)
	312	{
	313	if (a->index > 1)
	314	return -EINVAL;
	315
	316	strcpy(a->name, "Radio");
	317	a->capability = V4L2_AUDCAP_STEREO;
	318	return 0;
	319	}
	320
	321	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	322	{
	323	*i = 0;
	324	return 0;
	325	}
	326
	327	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	328	{
	329	if (i != 0)
	330	return -EINVAL;
	331	return 0;
1da177e4 LT	332	}
1da177e4 LT	333
6f66446c DL	334	static int vidioc_s_audio(struct file file, void priv,
6f66446c DL	335	struct v4l2_audio *a)
1da177e4	336	{
6f66446c DL	337	if (a->index != 0)
	338	return -EINVAL;
	339	return 0;
1da177e4 LT	340	}
	341
	342	enum {
	343	GEMTEK_PR103
	344	};
	345
	346	static char *card_names[] __devinitdata = {
	347	"GEMTEK_PR103"
	348	};
	349
	350	static struct pci_device_id gemtek_pci_id[] =
	351	{
	352	{ PCI_VENDOR_ID_GEMTEK, PCI_DEVICE_ID_GEMTEK_PR103,
	353	PCI_ANY_ID, PCI_ANY_ID, 0, 0, GEMTEK_PR103 },
	354	{ 0 }
	355	};
	356
	357	MODULE_DEVICE_TABLE( pci, gemtek_pci_id );
	358
	359	static int mx = 1;
	360
bec43661	361	static int gemtek_pci_exclusive_open(struct file *file)
3ca685aa HV	362	{
	363	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
	364	}
	365
bec43661	366	static int gemtek_pci_exclusive_release(struct file *file)
3ca685aa HV	367	{
	368	clear_bit(0, &in_use);
	369	return 0;
	370	}
	371
bec43661	372	static const struct v4l2_file_operations gemtek_pci_fops = {
1da177e4	373	.owner = THIS_MODULE,
3ca685aa HV	374	.open = gemtek_pci_exclusive_open,
3ca685aa HV	375	.release = gemtek_pci_exclusive_release,
6f66446c	376	.ioctl = video_ioctl2,
1da177e4 LT	377	};
1da177e4 LT	378
a399810c	379	static const struct v4l2_ioctl_ops gemtek_pci_ioctl_ops = {
6f66446c DL	380	.vidioc_querycap = vidioc_querycap,
	381	.vidioc_g_tuner = vidioc_g_tuner,
	382	.vidioc_s_tuner = vidioc_s_tuner,
	383	.vidioc_g_audio = vidioc_g_audio,
	384	.vidioc_s_audio = vidioc_s_audio,
	385	.vidioc_g_input = vidioc_g_input,
	386	.vidioc_s_input = vidioc_s_input,
	387	.vidioc_g_frequency = vidioc_g_frequency,
	388	.vidioc_s_frequency = vidioc_s_frequency,
	389	.vidioc_queryctrl = vidioc_queryctrl,
	390	.vidioc_g_ctrl = vidioc_g_ctrl,
	391	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	392	};
1da177e4 LT	393
a399810c	394	static struct video_device vdev_template = {
aa5e90af HV	395	.name = "Gemtek PCI Radio",
	396	.fops = &gemtek_pci_fops,
	397	.ioctl_ops = &gemtek_pci_ioctl_ops,
	398	.release = video_device_release_empty,
a399810c HV	399	};
a399810c HV	400
1da177e4 LT	401	static int __devinit gemtek_pci_probe( struct pci_dev pci_dev, const struct pci_device_id pci_id )
	402	{
	403	struct gemtek_pci_card *card;
	404	struct video_device *devradio;
	405
7408187d	406	if ( (card = kzalloc( sizeof( struct gemtek_pci_card ), GFP_KERNEL )) == NULL ) {
1da177e4 LT	407	printk( KERN_ERR "gemtek_pci: out of memory\n" );
	408	return -ENOMEM;
	409	}
1da177e4	410
4286c6f6	411	if ( pci_enable_device( pci_dev ) )
1da177e4	412	goto err_pci;
4286c6f6	413
1da177e4 LT	414	card->iobase = pci_resource_start( pci_dev, 0 );
	415	card->length = pci_resource_len( pci_dev, 0 );
	416
	417	if ( request_region( card->iobase, card->length, card_names[pci_id->driver_data] ) == NULL ) {
	418	printk( KERN_ERR "gemtek_pci: i/o port already in use\n" );
	419	goto err_pci;
	420	}
	421
1da177e4	422	pci_set_drvdata( pci_dev, card );
4286c6f6	423
1da177e4 LT	424	if ( (devradio = kmalloc( sizeof( struct video_device ), GFP_KERNEL )) == NULL ) {
	425	printk( KERN_ERR "gemtek_pci: out of memory\n" );
	426	goto err_video;
	427	}
	428	*devradio = vdev_template;
	429
cba99ae8	430	if (video_register_device(devradio, VFL_TYPE_RADIO, nr_radio) < 0) {
1da177e4 LT	431	kfree( devradio );
	432	goto err_video;
	433	}
	434
	435	card->videodev = devradio;
601e9444	436	video_set_drvdata(devradio, card);
1da177e4 LT	437	gemtek_pci_mute( card );
1da177e4 LT	438
4286c6f6	439	printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
44c10138	440	pci_dev->revision, card->iobase, card->iobase + card->length - 1 );
1da177e4 LT	441
	442	return 0;
	443
	444	err_video:
	445	release_region( card->iobase, card->length );
	446
	447	err_pci:
	448	kfree( card );
4286c6f6	449	return -ENODEV;
1da177e4 LT	450	}
	451
	452	static void __devexit gemtek_pci_remove( struct pci_dev *pci_dev )
	453	{
	454	struct gemtek_pci_card *card = pci_get_drvdata( pci_dev );
	455
	456	video_unregister_device( card->videodev );
	457	kfree( card->videodev );
	458
	459	release_region( card->iobase, card->length );
4286c6f6	460
1da177e4 LT	461	if ( mx )
	462	gemtek_pci_mute( card );
	463
	464	kfree( card );
4286c6f6	465
1da177e4 LT	466	pci_set_drvdata( pci_dev, NULL );
	467	}
	468
	469	static struct pci_driver gemtek_pci_driver =
	470	{
	471	.name = "gemtek_pci",
	472	.id_table = gemtek_pci_id,
	473	.probe = gemtek_pci_probe,
	474	.remove = __devexit_p(gemtek_pci_remove),
	475	};
	476
	477	static int __init gemtek_pci_init_module( void )
	478	{
9bfab8ce	479	return pci_register_driver( &gemtek_pci_driver );
1da177e4 LT	480	}
	481
	482	static void __exit gemtek_pci_cleanup_module( void )
	483	{
13962753	484	pci_unregister_driver(&gemtek_pci_driver);
1da177e4 LT	485	}
	486
	487	MODULE_AUTHOR( "Vladimir Shebordaev <vshebordaev@mail.ru>" );
	488	MODULE_DESCRIPTION( "The video4linux driver for the Gemtek PCI Radio Card" );
	489	MODULE_LICENSE("GPL");
	490
	491	module_param(mx, bool, 0);
	492	MODULE_PARM_DESC( mx, "single digit: 1 - turn off the turner upon module exit (default), 0 - do not" );
	493	module_param(nr_radio, int, 0);
	494	MODULE_PARM_DESC( nr_radio, "video4linux device number to use");
	495
	496	module_init( gemtek_pci_init_module );
	497	module_exit( gemtek_pci_cleanup_module );
	498