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

/* Terratec ActiveRadio ISA Standalone card driver for Linux radio support
 * (c) 1999 R. Offermanns (rolf@offermanns.de)
 * based on the aimslab radio driver from M. Kirkwood
 * many thanks to Michael Becker and Friedhelm Birth (from TerraTec)
 *
 *
 * History:
 * 1999-05-21	First preview release
 *
 *  Notes on the hardware:
 *  There are two "main" chips on the card:
 *  - Philips OM5610 (http://www-us.semiconductors.philips.com/acrobat/datasheets/OM5610_2.pdf)
 *  - Philips SAA6588 (http://www-us.semiconductors.philips.com/acrobat/datasheets/SAA6588_1.pdf)
 *  (you can get the datasheet at the above links)
 *
 *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
 *  Volume Control is done digitally
 *
 *  there is a I2C controlled RDS decoder (SAA6588)  onboard, which i would like to support someday
 *  (as soon i have understand how to get started :)
 *  If you can help me out with that, please contact me!!
 *
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 */

#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/spinlock.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,
	}
};

#ifndef CONFIG_RADIO_TERRATEC_PORT
#define CONFIG_RADIO_TERRATEC_PORT 0x590
#endif

/**************** this ones are for the terratec *******************/
#define BASEPORT 	0x590
#define VOLPORT 	0x591
#define WRT_DIS 	0x00
#define CLK_OFF		0x00
#define IIC_DATA	0x01
#define IIC_CLK		0x02
#define DATA		0x04
#define CLK_ON 		0x08
#define WRT_EN		0x10
/*******************************************************************/

static int io = CONFIG_RADIO_TERRATEC_PORT;
static int radio_nr = -1;
static spinlock_t lock;

struct tt_device
{
	int port;
	int curvol;
	unsigned long curfreq;
	int muted;
};


/* local things */

static void cardWriteVol(int volume)
{
	int i;
	volume = volume+(volume * 32); // change both channels
	spin_lock(&lock);
	for (i=0;i<8;i++)
	{
		if (volume & (0x80>>i))
			outb(0x80, VOLPORT);
		else outb(0x00, VOLPORT);
	}
	spin_unlock(&lock);
}


static void tt_mute(struct tt_device *dev)
{
	dev->muted = 1;
	cardWriteVol(0);
}

static int tt_setvol(struct tt_device *dev, int vol)
{

//	printk(KERN_ERR "setvol called, vol = %d\n", vol);

	if(vol == dev->curvol) {	/* requested volume = current */
		if (dev->muted) {	/* user is unmuting the card  */
			dev->muted = 0;
			cardWriteVol(vol);	/* enable card */
		}

		return 0;
	}

	if(vol == 0) {			/* volume = 0 means mute the card */
		cardWriteVol(0);	/* "turn off card" by setting vol to 0 */
		dev->curvol = vol;	/* track the volume state!	*/
		return 0;
	}

	dev->muted = 0;

	cardWriteVol(vol);

	dev->curvol = vol;

	return 0;

}


/* this is the worst part in this driver */
/* many more or less strange things are going on here, but hey, it works :) */

static int tt_setfreq(struct tt_device *dev, unsigned long freq1)
{
	int freq;
	int i;
	int p;
	int  temp;
	long rest;

	unsigned char buffer[25];		/* we have to bit shift 25 registers */
	freq = freq1/160;			/* convert the freq. to a nice to handle value */
	for(i=24;i>-1;i--)
		buffer[i]=0;

	rest = freq*10+10700;		/* i once had understood what is going on here */
					/* maybe some wise guy (friedhelm?) can comment this stuff */
	i=13;
	p=10;
	temp=102400;
	while (rest!=0)
	{
		if (rest%temp  == rest)
			buffer[i] = 0;
		else
		{
			buffer[i] = 1;
			rest = rest-temp;
		}
		i--;
		p--;
		temp = temp/2;
       }

	spin_lock(&lock);

	for (i=24;i>-1;i--)			/* bit shift the values to the radiocard */
	{
		if (buffer[i]==1)
		{
			outb(WRT_EN|DATA, BASEPORT);
			outb(WRT_EN|DATA|CLK_ON  , BASEPORT);
			outb(WRT_EN|DATA, BASEPORT);
		}
		else
		{
			outb(WRT_EN|0x00, BASEPORT);
			outb(WRT_EN|0x00|CLK_ON  , BASEPORT);
		}
	}
	outb(0x00, BASEPORT);

	spin_unlock(&lock);

	return 0;
}

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

static int vidioc_querycap(struct file *file, void *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-terratec", sizeof(v->driver));
	strlcpy(v->card, "ActiveRadio", 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 tt_device *tt = 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;
	v->capability = V4L2_TUNER_CAP_LOW;
	v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = 0xFFFF*tt_getsigstr(tt);
	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 tt_device *tt = dev->priv;

	tt->curfreq = f->frequency;
	tt_setfreq(tt, tt->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 tt_device *tt = dev->priv;

	f->type = V4L2_TUNER_RADIO;
	f->frequency = tt->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 tt_device *tt = dev->priv;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (tt->muted)
			ctrl->value = 1;
		else
			ctrl->value = 0;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		ctrl->value = tt->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 tt_device *tt = dev->priv;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->value)
			tt_mute(tt);
		else
			tt_setvol(tt,tt->curvol);
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		tt_setvol(tt,ctrl->value);
		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;
}

static struct tt_device terratec_unit;

static const struct file_operations terratec_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 terratec_radio=
{
	.owner		= THIS_MODULE,
	.name		= "TerraTec ActiveRadio",
	.type		= VID_TYPE_TUNER,
	.fops           = &terratec_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,
	.vidioc_g_audio     = vidioc_g_audio,
	.vidioc_s_audio     = vidioc_s_audio,
	.vidioc_g_input     = vidioc_g_input,
	.vidioc_s_input     = vidioc_s_input,
};

static int __init terratec_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, "terratec"))
	{
		printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io);
		return -EBUSY;
	}

	terratec_radio.priv=&terratec_unit;

	spin_lock_init(&lock);

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

	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n");

	/* mute card - prevents noisy bootups */

	/* this ensures that the volume is all the way down  */
	cardWriteVol(0);
	terratec_unit.curvol = 0;

	return 0;
}

MODULE_AUTHOR("R.OFFERMANNS & others");
MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
MODULE_LICENSE("GPL");
module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
module_param(radio_nr, int, 0);

static void __exit terratec_cleanup_module(void)
{
	video_unregister_device(&terratec_radio);
	release_region(io,2);
	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n");
}

module_init(terratec_init);
module_exit(terratec_cleanup_module);
Commit	Line	Data
1da177e4 LT	1	/* Terratec ActiveRadio ISA Standalone card driver for Linux radio support
	2	* (c) 1999 R. Offermanns (rolf@offermanns.de)
	3	* based on the aimslab radio driver from M. Kirkwood
	4	* many thanks to Michael Becker and Friedhelm Birth (from TerraTec)
4286c6f6	5	*
1da177e4 LT	6	*
	7	* History:
	8	* 1999-05-21 First preview release
4286c6f6	9	*
1da177e4 LT	10	* Notes on the hardware:
	11	* There are two "main" chips on the card:
	12	* - Philips OM5610 (http://www-us.semiconductors.philips.com/acrobat/datasheets/OM5610_2.pdf)
	13	* - Philips SAA6588 (http://www-us.semiconductors.philips.com/acrobat/datasheets/SAA6588_1.pdf)
	14	* (you can get the datasheet at the above links)
	15	*
	16	* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
	17	* Volume Control is done digitally
	18	*
	19	* there is a I2C controlled RDS decoder (SAA6588) onboard, which i would like to support someday
	20	* (as soon i have understand how to get started :)
	21	* If you can help me out with that, please contact me!!
	22	*
4286c6f6	23	*
55ac7b69	24	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	25	*/
	26
	27	#include <linux/module.h> /* Modules */
	28	#include <linux/init.h> /* Initdata */
fb911ee8	29	#include <linux/ioport.h> /* request_region */
1da177e4 LT	30	#include <linux/delay.h> /* udelay */
	31	#include <asm/io.h> /* outb, outb_p */
	32	#include <asm/uaccess.h> /* copy to/from user */
55ac7b69	33	#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3	34	#include <media/v4l2-common.h>
1da177e4 LT	35	#include <linux/spinlock.h>
1da177e4 LT	36
55ac7b69 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	#ifndef CONFIG_RADIO_TERRATEC_PORT
	60	#define CONFIG_RADIO_TERRATEC_PORT 0x590
	61	#endif
	62
	63	/************** this ones are for the terratec *****************/
	64	#define BASEPORT 0x590
	65	#define VOLPORT 0x591
	66	#define WRT_DIS 0x00
	67	#define CLK_OFF 0x00
	68	#define IIC_DATA 0x01
	69	#define IIC_CLK 0x02
	70	#define DATA 0x04
	71	#define CLK_ON 0x08
	72	#define WRT_EN 0x10
	73	/*******************************************************************/
	74
4286c6f6	75	static int io = CONFIG_RADIO_TERRATEC_PORT;
1da177e4 LT	76	static int radio_nr = -1;
	77	static spinlock_t lock;
	78
	79	struct tt_device
	80	{
	81	int port;
	82	int curvol;
	83	unsigned long curfreq;
	84	int muted;
	85	};
	86
	87
	88	/* local things */
	89
	90	static void cardWriteVol(int volume)
	91	{
	92	int i;
	93	volume = volume+(volume * 32); // change both channels
	94	spin_lock(&lock);
	95	for (i=0;i<8;i++)
	96	{
	97	if (volume & (0x80>>i))
	98	outb(0x80, VOLPORT);
	99	else outb(0x00, VOLPORT);
	100	}
	101	spin_unlock(&lock);
	102	}
	103
	104
	105
	106	static void tt_mute(struct tt_device *dev)
	107	{
	108	dev->muted = 1;
	109	cardWriteVol(0);
	110	}
	111
	112	static int tt_setvol(struct tt_device *dev, int vol)
	113	{
4286c6f6	114
1da177e4 LT	115	// printk(KERN_ERR "setvol called, vol = %d\n", vol);
	116
	117	if(vol == dev->curvol) { /* requested volume = current */
	118	if (dev->muted) { /* user is unmuting the card */
	119	dev->muted = 0;
	120	cardWriteVol(vol); /* enable card */
4286c6f6 MCC	121	}
4286c6f6 MCC	122
1da177e4 LT	123	return 0;
	124	}
	125
	126	if(vol == 0) { /* volume = 0 means mute the card */
	127	cardWriteVol(0); /* "turn off card" by setting vol to 0 */
	128	dev->curvol = vol; /* track the volume state! */
	129	return 0;
	130	}
	131
	132	dev->muted = 0;
4286c6f6	133
1da177e4	134	cardWriteVol(vol);
4286c6f6	135
1da177e4 LT	136	dev->curvol = vol;
	137
	138	return 0;
	139
	140	}
	141
	142
	143	/* this is the worst part in this driver */
	144	/* many more or less strange things are going on here, but hey, it works :) */
	145
	146	static int tt_setfreq(struct tt_device *dev, unsigned long freq1)
4286c6f6	147	{
1da177e4 LT	148	int freq;
	149	int i;
	150	int p;
	151	int temp;
	152	long rest;
4286c6f6	153
1da177e4 LT	154	unsigned char buffer[25]; /* we have to bit shift 25 registers */
	155	freq = freq1/160; /* convert the freq. to a nice to handle value */
	156	for(i=24;i>-1;i--)
	157	buffer[i]=0;
	158
	159	rest = freq10+10700; / i once had understood what is going on here */
	160	/* maybe some wise guy (friedhelm?) can comment this stuff */
	161	i=13;
	162	p=10;
	163	temp=102400;
	164	while (rest!=0)
	165	{
	166	if (rest%temp == rest)
	167	buffer[i] = 0;
4286c6f6	168	else
1da177e4	169	{
4286c6f6	170	buffer[i] = 1;
1da177e4 LT	171	rest = rest-temp;
	172	}
	173	i--;
	174	p--;
	175	temp = temp/2;
	176	}
	177
	178	spin_lock(&lock);
4286c6f6	179
1da177e4 LT	180	for (i=24;i>-1;i--) /* bit shift the values to the radiocard */
1da177e4 LT	181	{
4286c6f6	182	if (buffer[i]==1)
1da177e4 LT	183	{
	184	outb(WRT_EN\|DATA, BASEPORT);
	185	outb(WRT_EN\|DATA\|CLK_ON , BASEPORT);
	186	outb(WRT_EN\|DATA, BASEPORT);
	187	}
	188	else
	189	{
	190	outb(WRT_EN\|0x00, BASEPORT);
	191	outb(WRT_EN\|0x00\|CLK_ON , BASEPORT);
	192	}
	193	}
4286c6f6 MCC	194	outb(0x00, BASEPORT);
4286c6f6 MCC	195
1da177e4	196	spin_unlock(&lock);
4286c6f6 MCC	197
4286c6f6 MCC	198	return 0;
1da177e4 LT	199	}
	200
	201	static int tt_getsigstr(struct tt_device dev) / TODO */
	202	{
	203	if (inb(io) & 2) /* bit set = no signal present */
	204	return 0;
	205	return 1; /* signal present */
	206	}
	207
1de69238 DL	208	static int vidioc_querycap(struct file file, void priv,
	209	struct v4l2_capability *v)
	210	{
	211	strlcpy(v->driver, "radio-terratec", sizeof(v->driver));
	212	strlcpy(v->card, "ActiveRadio", sizeof(v->card));
	213	sprintf(v->bus_info, "ISA");
	214	v->version = RADIO_VERSION;
	215	v->capabilities = V4L2_CAP_TUNER;
	216	return 0;
	217	}
1da177e4	218
1de69238 DL	219	static int vidioc_g_tuner(struct file file, void priv,
1de69238 DL	220	struct v4l2_tuner *v)
1da177e4 LT	221	{
1da177e4 LT	222	struct video_device *dev = video_devdata(file);
1de69238	223	struct tt_device *tt = dev->priv;
4286c6f6	224
1de69238 DL	225	if (v->index > 0)
1de69238 DL	226	return -EINVAL;
55ac7b69	227
1de69238 DL	228	strcpy(v->name, "FM");
	229	v->type = V4L2_TUNER_RADIO;
	230	v->rangelow = (87*16000);
	231	v->rangehigh = (108*16000);
	232	v->rxsubchans = V4L2_TUNER_SUB_MONO;
	233	v->capability = V4L2_TUNER_CAP_LOW;
	234	v->audmode = V4L2_TUNER_MODE_MONO;
	235	v->signal = 0xFFFF*tt_getsigstr(tt);
	236	return 0;
	237	}
55ac7b69	238
1de69238 DL	239	static int vidioc_s_tuner(struct file file, void priv,
	240	struct v4l2_tuner *v)
	241	{
	242	if (v->index > 0)
	243	return -EINVAL;
	244	return 0;
	245	}
55ac7b69	246
1de69238 DL	247	static int vidioc_s_frequency(struct file file, void priv,
	248	struct v4l2_frequency *f)
	249	{
	250	struct video_device *dev = video_devdata(file);
	251	struct tt_device *tt = dev->priv;
55ac7b69	252
1de69238 DL	253	tt->curfreq = f->frequency;
	254	tt_setfreq(tt, tt->curfreq);
	255	return 0;
	256	}
55ac7b69	257
1de69238 DL	258	static int vidioc_g_frequency(struct file file, void priv,
	259	struct v4l2_frequency *f)
	260	{
	261	struct video_device *dev = video_devdata(file);
	262	struct tt_device *tt = dev->priv;
55ac7b69	263
1de69238 DL	264	f->type = V4L2_TUNER_RADIO;
	265	f->frequency = tt->curfreq;
	266	return 0;
	267	}
55ac7b69	268
1de69238 DL	269	static int vidioc_queryctrl(struct file file, void priv,
	270	struct v4l2_queryctrl *qc)
	271	{
	272	int i;
55ac7b69	273
1de69238 DL	274	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	275	if (qc->id && qc->id == radio_qctrl[i].id) {
	276	memcpy(qc, &(radio_qctrl[i]),
	277	sizeof(*qc));
1da177e4 LT	278	return 0;
1da177e4 LT	279	}
1de69238 DL	280	}
	281	return -EINVAL;
	282	}
55ac7b69	283
1de69238 DL	284	static int vidioc_g_ctrl(struct file file, void priv,
	285	struct v4l2_control *ctrl)
	286	{
	287	struct video_device *dev = video_devdata(file);
	288	struct tt_device *tt = dev->priv;
55ac7b69	289
1de69238 DL	290	switch (ctrl->id) {
	291	case V4L2_CID_AUDIO_MUTE:
	292	if (tt->muted)
	293	ctrl->value = 1;
	294	else
	295	ctrl->value = 0;
	296	return 0;
	297	case V4L2_CID_AUDIO_VOLUME:
	298	ctrl->value = tt->curvol * 6554;
	299	return 0;
	300	}
	301	return -EINVAL;
	302	}
55ac7b69	303
1de69238 DL	304	static int vidioc_s_ctrl(struct file file, void priv,
	305	struct v4l2_control *ctrl)
	306	{
	307	struct video_device *dev = video_devdata(file);
	308	struct tt_device *tt = dev->priv;
	309
	310	switch (ctrl->id) {
	311	case V4L2_CID_AUDIO_MUTE:
	312	if (ctrl->value)
	313	tt_mute(tt);
	314	else
	315	tt_setvol(tt,tt->curvol);
	316	return 0;
	317	case V4L2_CID_AUDIO_VOLUME:
	318	tt_setvol(tt,ctrl->value);
	319	return 0;
1da177e4	320	}
1de69238 DL	321	return -EINVAL;
	322	}
	323
	324	static int vidioc_g_audio(struct file file, void priv,
	325	struct v4l2_audio *a)
	326	{
	327	if (a->index > 1)
	328	return -EINVAL;
	329
	330	strcpy(a->name, "Radio");
	331	a->capability = V4L2_AUDCAP_STEREO;
	332	return 0;
	333	}
	334
	335	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	336	{
	337	*i = 0;
	338	return 0;
1da177e4 LT	339	}
1da177e4 LT	340
1de69238	341	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
1da177e4	342	{
1de69238 DL	343	if (i != 0)
	344	return -EINVAL;
	345	return 0;
	346	}
	347
	348	static int vidioc_s_audio(struct file file, void priv,
	349	struct v4l2_audio *a)
	350	{
	351	if (a->index != 0)
	352	return -EINVAL;
	353	return 0;
1da177e4 LT	354	}
	355
	356	static struct tt_device terratec_unit;
	357
fa027c2a	358	static const struct file_operations terratec_fops = {
1da177e4 LT	359	.owner = THIS_MODULE,
	360	.open = video_exclusive_open,
	361	.release = video_exclusive_release,
1de69238	362	.ioctl = video_ioctl2,
0d0fbf81	363	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	364	.llseek = no_llseek,
	365	};
	366
	367	static struct video_device terratec_radio=
	368	{
	369	.owner = THIS_MODULE,
	370	.name = "TerraTec ActiveRadio",
	371	.type = VID_TYPE_TUNER,
1da177e4	372	.fops = &terratec_fops,
1de69238 DL	373	.vidioc_querycap = vidioc_querycap,
	374	.vidioc_g_tuner = vidioc_g_tuner,
	375	.vidioc_s_tuner = vidioc_s_tuner,
	376	.vidioc_g_frequency = vidioc_g_frequency,
	377	.vidioc_s_frequency = vidioc_s_frequency,
	378	.vidioc_queryctrl = vidioc_queryctrl,
	379	.vidioc_g_ctrl = vidioc_g_ctrl,
	380	.vidioc_s_ctrl = vidioc_s_ctrl,
	381	.vidioc_g_audio = vidioc_g_audio,
	382	.vidioc_s_audio = vidioc_s_audio,
	383	.vidioc_g_input = vidioc_g_input,
	384	.vidioc_s_input = vidioc_s_input,
1da177e4 LT	385	};
	386
	387	static int __init terratec_init(void)
	388	{
	389	if(io==-1)
	390	{
	391	printk(KERN_ERR "You must set an I/O address with io=0x???\n");
	392	return -EINVAL;
	393	}
4286c6f6	394	if (!request_region(io, 2, "terratec"))
1da177e4 LT	395	{
	396	printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io);
	397	return -EBUSY;
	398	}
	399
	400	terratec_radio.priv=&terratec_unit;
4286c6f6	401
1da177e4	402	spin_lock_init(&lock);
4286c6f6	403
1da177e4 LT	404	if(video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr)==-1)
	405	{
	406	release_region(io,2);
	407	return -EINVAL;
	408	}
4286c6f6	409
1da177e4 LT	410	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n");
1da177e4 LT	411
4286c6f6	412	/* mute card - prevents noisy bootups */
1da177e4 LT	413
	414	/* this ensures that the volume is all the way down */
	415	cardWriteVol(0);
	416	terratec_unit.curvol = 0;
	417
	418	return 0;
	419	}
	420
	421	MODULE_AUTHOR("R.OFFERMANNS & others");
	422	MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
	423	MODULE_LICENSE("GPL");
	424	module_param(io, int, 0);
	425	MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
	426	module_param(radio_nr, int, 0);
	427
	428	static void __exit terratec_cleanup_module(void)
	429	{
	430	video_unregister_device(&terratec_radio);
	431	release_region(io,2);
4286c6f6	432	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n");
1da177e4 LT	433	}
	434
	435	module_init(terratec_init);
	436	module_exit(terratec_cleanup_module);
	437