[mirror_ubuntu-jammy-kernel.git] / drivers / media / radio / radio-aztech.c

/* radio-aztech.c - Aztech radio card driver for Linux 2.2
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 * Adapted to support the Video for Linux API by
 * Russell Kroll <rkroll@exploits.org>.  Based on original tuner code by:
 *
 * Quay Ly
 * Donald Song
 * Jason Lewis      (jlewis@twilight.vtc.vsc.edu)
 * Scott McGrath    (smcgrath@twilight.vtc.vsc.edu)
 * William McGrath  (wmcgrath@twilight.vtc.vsc.edu)
 *
 * The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
 * along with more information on the card itself.
 *
 * History:
 * 1999-02-24	Russell Kroll <rkroll@exploits.org>
 *		Fine tuning/VIDEO_TUNER_LOW
 * 		Range expanded to 87-108 MHz (from 87.9-107.8)
 *
 * Notable changes from the original source:
 * - includes stripped down to the essentials
 * - for loops used as delays replaced with udelay()
 * - #defines removed, changed to static values
 * - tuning structure changed - no more character arrays, other changes
*/

#include <linux/module.h>	/* Modules 			*/
#include <linux/init.h>		/* Initdata			*/
#include <linux/ioport.h>	/* request_region		*/
#include <linux/delay.h>	/* udelay			*/
#include <asm/io.h>		/* outb, outb_p			*/
#include <asm/uaccess.h>	/* copy to/from user		*/
#include <linux/videodev2.h>	/* kernel radio structs		*/
#include <media/v4l2-common.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       = 0xff,
		.step          = 1,
		.default_value = 0xff,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}
};

/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */

#ifndef CONFIG_RADIO_AZTECH_PORT
#define CONFIG_RADIO_AZTECH_PORT -1
#endif

static int io = CONFIG_RADIO_AZTECH_PORT;
static int radio_nr = -1;
static int radio_wait_time = 1000;
static struct mutex lock;

struct az_device
{
	int curvol;
	unsigned long curfreq;
	int stereo;
};

static int volconvert(int level)
{
	level>>=14;		/* Map 16bits down to 2 bit */
	level&=3;

	/* convert to card-friendly values */
	switch (level)
	{
		case 0:
			return 0;
		case 1:
			return 1;
		case 2:
			return 4;
		case 3:
			return 5;
	}
	return 0;	/* Quieten gcc */
}

static void send_0_byte (struct az_device *dev)
{
	udelay(radio_wait_time);
	outb_p(2+volconvert(dev->curvol), io);
	outb_p(64+2+volconvert(dev->curvol), io);
}

static void send_1_byte (struct az_device *dev)
{
	udelay (radio_wait_time);
	outb_p(128+2+volconvert(dev->curvol), io);
	outb_p(128+64+2+volconvert(dev->curvol), io);
}

static int az_setvol(struct az_device *dev, int vol)
{
	mutex_lock(&lock);
	outb (volconvert(vol), io);
	mutex_unlock(&lock);
	return 0;
}

/* thanks to Michael Dwyer for giving me a dose of clues in
 * the signal strength department..
 *
 * This card has a stereo bit - bit 0 set = mono, not set = stereo
 * It also has a "signal" bit - bit 1 set = bad signal, not set = good
 *
 */

static int az_getsigstr(struct az_device *dev)
{
	if (inb(io) & 2)	/* bit set = no signal present */
		return 0;
	return 1;		/* signal present */
}

static int az_getstereo(struct az_device *dev)
{
	if (inb(io) & 1) 	/* bit set = mono */
		return 0;
	return 1;		/* stereo */
}

static int az_setfreq(struct az_device *dev, unsigned long frequency)
{
	int  i;

	frequency += 171200;		/* Add 10.7 MHz IF		*/
	frequency /= 800;		/* Convert to 50 kHz units	*/

	mutex_lock(&lock);

	send_0_byte (dev);		/*  0: LSB of frequency       */

	for (i = 0; i < 13; i++)	/*   : frequency bits (1-13)  */
		if (frequency & (1 << i))
			send_1_byte (dev);
		else
			send_0_byte (dev);

	send_0_byte (dev);		/* 14: test bit - always 0    */
	send_0_byte (dev);		/* 15: test bit - always 0    */
	send_0_byte (dev);		/* 16: band data 0 - always 0 */
	if (dev->stereo)		/* 17: stereo (1 to enable)   */
		send_1_byte (dev);
	else
		send_0_byte (dev);

	send_1_byte (dev);		/* 18: band data 1 - unknown  */
	send_0_byte (dev);		/* 19: time base - always 0   */
	send_0_byte (dev);		/* 20: spacing (0 = 25 kHz)   */
	send_1_byte (dev);		/* 21: spacing (1 = 25 kHz)   */
	send_0_byte (dev);		/* 22: spacing (0 = 25 kHz)   */
	send_1_byte (dev);		/* 23: AM/FM (FM = 1, always) */

	/* latch frequency */

	udelay (radio_wait_time);
	outb_p(128+64+volconvert(dev->curvol), io);

	mutex_unlock(&lock);

	return 0;
}

static int vidioc_querycap (struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-aztech", sizeof (v->driver));
	strlcpy(v->card, "Aztech 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 video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

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

	strcpy(v->name, "FM");
	v->type = V4L2_TUNER_RADIO;

	v->rangelow=(87*16000);
	v->rangehigh=(108*16000);
	v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
	v->capability=V4L2_TUNER_CAP_LOW;
	if(az_getstereo(az))
		v->audmode = V4L2_TUNER_MODE_STEREO;
	else
		v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal=0xFFFF*az_getsigstr(az);

	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 video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	az->curfreq = f->frequency;
	az_setfreq(az, az->curfreq);
	return 0;
}

static int vidioc_g_frequency (struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	struct video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	f->type = V4L2_TUNER_RADIO;
	f->frequency = az->curfreq;

	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 video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	switch (ctrl->id) {
		case V4L2_CID_AUDIO_MUTE:
			if (az->curvol==0)
				ctrl->value=1;
			else
				ctrl->value=0;
			return (0);
		case V4L2_CID_AUDIO_VOLUME:
			ctrl->value=az->curvol * 6554;
			return (0);
	}
	return -EINVAL;
}

static int vidioc_s_ctrl (struct file *file, void *priv,
			    struct v4l2_control *ctrl)
{
	struct video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	switch (ctrl->id) {
		case V4L2_CID_AUDIO_MUTE:
			if (ctrl->value) {
				az_setvol(az,0);
			} else {
				az_setvol(az,az->curvol);
			}
			return (0);
		case V4L2_CID_AUDIO_VOLUME:
			az_setvol(az,ctrl->value);
			return (0);
	}
	return -EINVAL;
}

static struct az_device aztech_unit;

static const struct file_operations aztech_fops = {
	.owner		= THIS_MODULE,
	.open           = video_exclusive_open,
	.release        = video_exclusive_release,
	.ioctl		= video_ioctl2,
	.compat_ioctl	= v4l_compat_ioctl32,
	.llseek         = no_llseek,
};

static struct video_device aztech_radio=
{
	.owner		    = THIS_MODULE,
	.name		    = "Aztech radio",
	.type		    = VID_TYPE_TUNER,
	.hardware	    = 0,
	.fops               = &aztech_fops,
	.vidioc_querycap    = vidioc_querycap,
	.vidioc_g_tuner     = vidioc_g_tuner,
	.vidioc_s_tuner     = vidioc_s_tuner,
	.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,
};

module_param_named(debug,aztech_radio.debug, int, 0644);
MODULE_PARM_DESC(debug,"activates debug info");

static int __init aztech_init(void)
{
	if(io==-1)
	{
		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
		return -EINVAL;
	}

	if (!request_region(io, 2, "aztech"))
	{
		printk(KERN_ERR "aztech: port 0x%x already in use\n", io);
		return -EBUSY;
	}

	mutex_init(&lock);
	aztech_radio.priv=&aztech_unit;

	if(video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr)==-1)
	{
		release_region(io,2);
		return -EINVAL;
	}

	printk(KERN_INFO "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
	/* mute card - prevents noisy bootups */
	outb (0, io);
	return 0;
}

MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
MODULE_DESCRIPTION("A driver for the Aztech radio card.");
MODULE_LICENSE("GPL");

module_param(io, int, 0);
module_param(radio_nr, int, 0);
MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");

static void __exit aztech_cleanup(void)
{
	video_unregister_device(&aztech_radio);
	release_region(io,2);
}

module_init(aztech_init);
module_exit(aztech_cleanup);
Commit	Line	Data
4286c6f6	1	/* radio-aztech.c - Aztech radio card driver for Linux 2.2
1da177e4	2	*
a4366af4	3	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
4286c6f6	4	* Adapted to support the Video for Linux API by
1da177e4 LT	5	* Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
	6	*
	7	* Quay Ly
	8	* Donald Song
4286c6f6	9	* Jason Lewis (jlewis@twilight.vtc.vsc.edu)
1da177e4 LT	10	* Scott McGrath (smcgrath@twilight.vtc.vsc.edu)
	11	* William McGrath (wmcgrath@twilight.vtc.vsc.edu)
	12	*
	13	* The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
	14	* along with more information on the card itself.
	15	*
	16	* History:
	17	* 1999-02-24 Russell Kroll <rkroll@exploits.org>
	18	* Fine tuning/VIDEO_TUNER_LOW
	19	* Range expanded to 87-108 MHz (from 87.9-107.8)
	20	*
	21	* Notable changes from the original source:
	22	* - includes stripped down to the essentials
	23	* - for loops used as delays replaced with udelay()
	24	* - #defines removed, changed to static values
	25	* - tuning structure changed - no more character arrays, other changes
	26	*/
	27
	28	#include <linux/module.h> /* Modules */
	29	#include <linux/init.h> /* Initdata */
fb911ee8	30	#include <linux/ioport.h> /* request_region */
1da177e4 LT	31	#include <linux/delay.h> /* udelay */
	32	#include <asm/io.h> /* outb, outb_p */
	33	#include <asm/uaccess.h> /* copy to/from user */
a4366af4	34	#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3	35	#include <media/v4l2-common.h>
1da177e4	36
a4366af4 MCC	37	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	38	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	39
	40	static struct v4l2_queryctrl radio_qctrl[] = {
	41	{
	42	.id = V4L2_CID_AUDIO_MUTE,
	43	.name = "Mute",
	44	.minimum = 0,
	45	.maximum = 1,
	46	.default_value = 1,
	47	.type = V4L2_CTRL_TYPE_BOOLEAN,
	48	},{
	49	.id = V4L2_CID_AUDIO_VOLUME,
	50	.name = "Volume",
	51	.minimum = 0,
	52	.maximum = 0xff,
	53	.step = 1,
	54	.default_value = 0xff,
	55	.type = V4L2_CTRL_TYPE_INTEGER,
	56	}
	57	};
	58
1da177e4 LT	59	/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
	60
	61	#ifndef CONFIG_RADIO_AZTECH_PORT
	62	#define CONFIG_RADIO_AZTECH_PORT -1
	63	#endif
	64
4286c6f6	65	static int io = CONFIG_RADIO_AZTECH_PORT;
1da177e4 LT	66	static int radio_nr = -1;
1da177e4 LT	67	static int radio_wait_time = 1000;
3593cab5	68	static struct mutex lock;
1da177e4 LT	69
	70	struct az_device
	71	{
	72	int curvol;
	73	unsigned long curfreq;
	74	int stereo;
	75	};
	76
	77	static int volconvert(int level)
	78	{
4286c6f6 MCC	79	level>>=14; /* Map 16bits down to 2 bit */
	80	level&=3;
	81
1da177e4	82	/* convert to card-friendly values */
4286c6f6	83	switch (level)
1da177e4	84	{
4286c6f6	85	case 0:
1da177e4	86	return 0;
4286c6f6	87	case 1:
1da177e4 LT	88	return 1;
	89	case 2:
	90	return 4;
	91	case 3:
	92	return 5;
	93	}
	94	return 0; /* Quieten gcc */
	95	}
	96
	97	static void send_0_byte (struct az_device *dev)
	98	{
	99	udelay(radio_wait_time);
	100	outb_p(2+volconvert(dev->curvol), io);
	101	outb_p(64+2+volconvert(dev->curvol), io);
	102	}
	103
	104	static void send_1_byte (struct az_device *dev)
	105	{
	106	udelay (radio_wait_time);
	107	outb_p(128+2+volconvert(dev->curvol), io);
	108	outb_p(128+64+2+volconvert(dev->curvol), io);
	109	}
	110
	111	static int az_setvol(struct az_device *dev, int vol)
	112	{
3593cab5	113	mutex_lock(&lock);
1da177e4	114	outb (volconvert(vol), io);
3593cab5	115	mutex_unlock(&lock);
1da177e4 LT	116	return 0;
	117	}
	118
	119	/* thanks to Michael Dwyer for giving me a dose of clues in
	120	* the signal strength department..
	121	*
	122	* This card has a stereo bit - bit 0 set = mono, not set = stereo
	123	* It also has a "signal" bit - bit 1 set = bad signal, not set = good
	124	*
	125	*/
	126
	127	static int az_getsigstr(struct az_device *dev)
	128	{
	129	if (inb(io) & 2) /* bit set = no signal present */
	130	return 0;
	131	return 1; /* signal present */
	132	}
	133
	134	static int az_getstereo(struct az_device *dev)
	135	{
	136	if (inb(io) & 1) /* bit set = mono */
	137	return 0;
	138	return 1; /* stereo */
	139	}
	140
	141	static int az_setfreq(struct az_device *dev, unsigned long frequency)
	142	{
	143	int i;
	144
	145	frequency += 171200; /* Add 10.7 MHz IF */
	146	frequency /= 800; /* Convert to 50 kHz units */
4286c6f6	147
3593cab5	148	mutex_lock(&lock);
4286c6f6	149
1da177e4 LT	150	send_0_byte (dev); /* 0: LSB of frequency */
	151
	152	for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
	153	if (frequency & (1 << i))
	154	send_1_byte (dev);
	155	else
	156	send_0_byte (dev);
	157
	158	send_0_byte (dev); /* 14: test bit - always 0 */
	159	send_0_byte (dev); /* 15: test bit - always 0 */
	160	send_0_byte (dev); /* 16: band data 0 - always 0 */
	161	if (dev->stereo) /* 17: stereo (1 to enable) */
	162	send_1_byte (dev);
	163	else
	164	send_0_byte (dev);
	165
	166	send_1_byte (dev); /* 18: band data 1 - unknown */
	167	send_0_byte (dev); /* 19: time base - always 0 */
	168	send_0_byte (dev); /* 20: spacing (0 = 25 kHz) */
	169	send_1_byte (dev); /* 21: spacing (1 = 25 kHz) */
	170	send_0_byte (dev); /* 22: spacing (0 = 25 kHz) */
	171	send_1_byte (dev); /* 23: AM/FM (FM = 1, always) */
	172
	173	/* latch frequency */
	174
	175	udelay (radio_wait_time);
	176	outb_p(128+64+volconvert(dev->curvol), io);
4286c6f6	177
3593cab5	178	mutex_unlock(&lock);
1da177e4 LT	179
	180	return 0;
	181	}
	182
99218fe4 MCC	183	static int vidioc_querycap (struct file file, void priv,
	184	struct v4l2_capability *v)
	185	{
	186	strlcpy(v->driver, "radio-aztech", sizeof (v->driver));
	187	strlcpy(v->card, "Aztech Radio", sizeof (v->card));
	188	sprintf(v->bus_info,"ISA");
	189	v->version = RADIO_VERSION;
	190	v->capabilities = V4L2_CAP_TUNER;
	191	return 0;
	192	}
	193
	194	static int vidioc_g_tuner (struct file file, void priv,
	195	struct v4l2_tuner *v)
1da177e4 LT	196	{
	197	struct video_device *dev = video_devdata(file);
	198	struct az_device *az = dev->priv;
4286c6f6	199
99218fe4 MCC	200	if (v->index > 0)
99218fe4 MCC	201	return -EINVAL;
a4366af4	202
99218fe4 MCC	203	strcpy(v->name, "FM");
99218fe4 MCC	204	v->type = V4L2_TUNER_RADIO;
a4366af4	205
99218fe4 MCC	206	v->rangelow=(87*16000);
	207	v->rangehigh=(108*16000);
	208	v->rxsubchans =V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	209	v->capability=V4L2_TUNER_CAP_LOW;
	210	if(az_getstereo(az))
	211	v->audmode = V4L2_TUNER_MODE_STEREO;
	212	else
	213	v->audmode = V4L2_TUNER_MODE_MONO;
	214	v->signal=0xFFFF*az_getsigstr(az);
a4366af4	215
99218fe4 MCC	216	return 0;
99218fe4 MCC	217	}
a4366af4	218
a4366af4	219
99218fe4 MCC	220	static int vidioc_s_tuner (struct file file, void priv,
	221	struct v4l2_tuner *v)
	222	{
	223	if (v->index > 0)
	224	return -EINVAL;
a4366af4	225
99218fe4 MCC	226	return 0;
99218fe4 MCC	227	}
a4366af4	228
99218fe4 MCC	229	static int vidioc_s_frequency (struct file file, void priv,
	230	struct v4l2_frequency *f)
	231	{
	232	struct video_device *dev = video_devdata(file);
	233	struct az_device *az = dev->priv;
a4366af4	234
99218fe4 MCC	235	az->curfreq = f->frequency;
	236	az_setfreq(az, az->curfreq);
	237	return 0;
	238	}
	239
	240	static int vidioc_g_frequency (struct file file, void priv,
	241	struct v4l2_frequency *f)
	242	{
	243	struct video_device *dev = video_devdata(file);
	244	struct az_device *az = dev->priv;
	245
	246	f->type = V4L2_TUNER_RADIO;
	247	f->frequency = az->curfreq;
	248
	249	return 0;
	250	}
	251
	252	static int vidioc_queryctrl (struct file file, void priv,
	253	struct v4l2_queryctrl *qc)
	254	{
	255	int i;
	256
	257	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	258	if (qc->id && qc->id == radio_qctrl[i].id) {
	259	memcpy(qc, &(radio_qctrl[i]),
	260	sizeof(*qc));
	261	return (0);
1da177e4	262	}
99218fe4 MCC	263	}
	264	return -EINVAL;
	265	}
a4366af4	266
99218fe4 MCC	267	static int vidioc_g_ctrl (struct file file, void priv,
	268	struct v4l2_control *ctrl)
	269	{
	270	struct video_device *dev = video_devdata(file);
	271	struct az_device *az = dev->priv;
	272
	273	switch (ctrl->id) {
	274	case V4L2_CID_AUDIO_MUTE:
	275	if (az->curvol==0)
	276	ctrl->value=1;
	277	else
	278	ctrl->value=0;
	279	return (0);
	280	case V4L2_CID_AUDIO_VOLUME:
	281	ctrl->value=az->curvol * 6554;
	282	return (0);
1da177e4	283	}
99218fe4	284	return -EINVAL;
1da177e4 LT	285	}
1da177e4 LT	286
99218fe4 MCC	287	static int vidioc_s_ctrl (struct file file, void priv,
99218fe4 MCC	288	struct v4l2_control *ctrl)
1da177e4	289	{
99218fe4 MCC	290	struct video_device *dev = video_devdata(file);
	291	struct az_device *az = dev->priv;
	292
	293	switch (ctrl->id) {
	294	case V4L2_CID_AUDIO_MUTE:
	295	if (ctrl->value) {
	296	az_setvol(az,0);
	297	} else {
	298	az_setvol(az,az->curvol);
	299	}
	300	return (0);
	301	case V4L2_CID_AUDIO_VOLUME:
	302	az_setvol(az,ctrl->value);
	303	return (0);
	304	}
	305	return -EINVAL;
1da177e4 LT	306	}
	307
	308	static struct az_device aztech_unit;
	309
fa027c2a	310	static const struct file_operations aztech_fops = {
1da177e4 LT	311	.owner = THIS_MODULE,
	312	.open = video_exclusive_open,
	313	.release = video_exclusive_release,
99218fe4	314	.ioctl = video_ioctl2,
0d0fbf81	315	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	316	.llseek = no_llseek,
	317	};
	318
	319	static struct video_device aztech_radio=
	320	{
99218fe4 MCC	321	.owner = THIS_MODULE,
	322	.name = "Aztech radio",
	323	.type = VID_TYPE_TUNER,
	324	.hardware = 0,
	325	.fops = &aztech_fops,
	326	.vidioc_querycap = vidioc_querycap,
	327	.vidioc_g_tuner = vidioc_g_tuner,
	328	.vidioc_s_tuner = vidioc_s_tuner,
	329	.vidioc_g_frequency = vidioc_g_frequency,
	330	.vidioc_s_frequency = vidioc_s_frequency,
	331	.vidioc_queryctrl = vidioc_queryctrl,
	332	.vidioc_g_ctrl = vidioc_g_ctrl,
	333	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	334	};
1da177e4 LT	335
99218fe4 MCC	336	module_param_named(debug,aztech_radio.debug, int, 0644);
	337	MODULE_PARM_DESC(debug,"activates debug info");
	338
1da177e4 LT	339	static int __init aztech_init(void)
	340	{
	341	if(io==-1)
	342	{
	343	printk(KERN_ERR "You must set an I/O address with io=0x???\n");
	344	return -EINVAL;
	345	}
	346
4286c6f6	347	if (!request_region(io, 2, "aztech"))
1da177e4 LT	348	{
	349	printk(KERN_ERR "aztech: port 0x%x already in use\n", io);
	350	return -EBUSY;
	351	}
	352
3593cab5	353	mutex_init(&lock);
1da177e4	354	aztech_radio.priv=&aztech_unit;
4286c6f6	355
1da177e4 LT	356	if(video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr)==-1)
	357	{
	358	release_region(io,2);
	359	return -EINVAL;
	360	}
4286c6f6	361
1da177e4 LT	362	printk(KERN_INFO "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
	363	/* mute card - prevents noisy bootups */
	364	outb (0, io);
	365	return 0;
	366	}
	367
	368	MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
	369	MODULE_DESCRIPTION("A driver for the Aztech radio card.");
	370	MODULE_LICENSE("GPL");
	371
	372	module_param(io, int, 0);
	373	module_param(radio_nr, int, 0);
	374	MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
	375
	376	static void __exit aztech_cleanup(void)
	377	{
	378	video_unregister_device(&aztech_radio);
	379	release_region(io,2);
	380	}
	381
	382	module_init(aztech_init);
	383	module_exit(aztech_cleanup);