[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 <media/v4l2-ioctl.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
{
	unsigned long in_use;
	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 tt_device *tt = video_drvdata(file);

	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 tt_device *tt = video_drvdata(file);

	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 tt_device *tt = video_drvdata(file);

	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 tt_device *tt = video_drvdata(file);

	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 tt_device *tt = video_drvdata(file);

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

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

static const struct v4l2_file_operations terratec_fops = {
	.owner		= THIS_MODULE,
	.open           = terratec_exclusive_open,
	.release        = terratec_exclusive_release,
	.ioctl		= video_ioctl2,
};

static const struct v4l2_ioctl_ops terratec_ioctl_ops = {
	.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 struct video_device terratec_radio = {
	.name		= "TerraTec ActiveRadio",
	.fops           = &terratec_fops,
	.ioctl_ops 	= &terratec_ioctl_ops,
	.release	= video_device_release_empty,
};

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;
	}

	video_set_drvdata(&terratec_radio, &terratec_unit);

	spin_lock_init(&lock);

	if (video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
		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>
35ea11ff	35	#include <media/v4l2-ioctl.h>
1da177e4 LT	36	#include <linux/spinlock.h>
1da177e4 LT	37
55ac7b69 MCC	38	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	39	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	40
	41	static struct v4l2_queryctrl radio_qctrl[] = {
	42	{
	43	.id = V4L2_CID_AUDIO_MUTE,
	44	.name = "Mute",
	45	.minimum = 0,
	46	.maximum = 1,
	47	.default_value = 1,
	48	.type = V4L2_CTRL_TYPE_BOOLEAN,
	49	},{
	50	.id = V4L2_CID_AUDIO_VOLUME,
	51	.name = "Volume",
	52	.minimum = 0,
	53	.maximum = 0xff,
	54	.step = 1,
	55	.default_value = 0xff,
	56	.type = V4L2_CTRL_TYPE_INTEGER,
	57	}
	58	};
	59
1da177e4 LT	60	#ifndef CONFIG_RADIO_TERRATEC_PORT
	61	#define CONFIG_RADIO_TERRATEC_PORT 0x590
	62	#endif
	63
	64	/************** this ones are for the terratec *****************/
	65	#define BASEPORT 0x590
	66	#define VOLPORT 0x591
	67	#define WRT_DIS 0x00
	68	#define CLK_OFF 0x00
	69	#define IIC_DATA 0x01
	70	#define IIC_CLK 0x02
	71	#define DATA 0x04
	72	#define CLK_ON 0x08
	73	#define WRT_EN 0x10
	74	/*******************************************************************/
	75
4286c6f6	76	static int io = CONFIG_RADIO_TERRATEC_PORT;
1da177e4 LT	77	static int radio_nr = -1;
	78	static spinlock_t lock;
	79
	80	struct tt_device
	81	{
3ca685aa	82	unsigned long in_use;
1da177e4 LT	83	int port;
	84	int curvol;
	85	unsigned long curfreq;
	86	int muted;
	87	};
	88
	89
	90	/* local things */
	91
	92	static void cardWriteVol(int volume)
	93	{
	94	int i;
	95	volume = volume+(volume * 32); // change both channels
	96	spin_lock(&lock);
	97	for (i=0;i<8;i++)
	98	{
	99	if (volume & (0x80>>i))
	100	outb(0x80, VOLPORT);
	101	else outb(0x00, VOLPORT);
	102	}
	103	spin_unlock(&lock);
	104	}
	105
	106
	107
	108	static void tt_mute(struct tt_device *dev)
	109	{
	110	dev->muted = 1;
	111	cardWriteVol(0);
	112	}
	113
	114	static int tt_setvol(struct tt_device *dev, int vol)
	115	{
4286c6f6	116
1da177e4 LT	117	// printk(KERN_ERR "setvol called, vol = %d\n", vol);
	118
	119	if(vol == dev->curvol) { /* requested volume = current */
	120	if (dev->muted) { /* user is unmuting the card */
	121	dev->muted = 0;
	122	cardWriteVol(vol); /* enable card */
4286c6f6 MCC	123	}
4286c6f6 MCC	124
1da177e4 LT	125	return 0;
	126	}
	127
	128	if(vol == 0) { /* volume = 0 means mute the card */
	129	cardWriteVol(0); /* "turn off card" by setting vol to 0 */
	130	dev->curvol = vol; /* track the volume state! */
	131	return 0;
	132	}
	133
	134	dev->muted = 0;
4286c6f6	135
1da177e4	136	cardWriteVol(vol);
4286c6f6	137
1da177e4 LT	138	dev->curvol = vol;
	139
	140	return 0;
	141
	142	}
	143
	144
	145	/* this is the worst part in this driver */
	146	/* many more or less strange things are going on here, but hey, it works :) */
	147
	148	static int tt_setfreq(struct tt_device *dev, unsigned long freq1)
4286c6f6	149	{
1da177e4 LT	150	int freq;
	151	int i;
	152	int p;
	153	int temp;
	154	long rest;
4286c6f6	155
1da177e4 LT	156	unsigned char buffer[25]; /* we have to bit shift 25 registers */
	157	freq = freq1/160; /* convert the freq. to a nice to handle value */
	158	for(i=24;i>-1;i--)
	159	buffer[i]=0;
	160
	161	rest = freq10+10700; / i once had understood what is going on here */
	162	/* maybe some wise guy (friedhelm?) can comment this stuff */
	163	i=13;
	164	p=10;
	165	temp=102400;
	166	while (rest!=0)
	167	{
	168	if (rest%temp == rest)
	169	buffer[i] = 0;
4286c6f6	170	else
1da177e4	171	{
4286c6f6	172	buffer[i] = 1;
1da177e4 LT	173	rest = rest-temp;
	174	}
	175	i--;
	176	p--;
	177	temp = temp/2;
b930e1d8	178	}
1da177e4 LT	179
1da177e4 LT	180	spin_lock(&lock);
4286c6f6	181
1da177e4 LT	182	for (i=24;i>-1;i--) /* bit shift the values to the radiocard */
1da177e4 LT	183	{
4286c6f6	184	if (buffer[i]==1)
1da177e4 LT	185	{
	186	outb(WRT_EN\|DATA, BASEPORT);
	187	outb(WRT_EN\|DATA\|CLK_ON , BASEPORT);
	188	outb(WRT_EN\|DATA, BASEPORT);
	189	}
	190	else
	191	{
	192	outb(WRT_EN\|0x00, BASEPORT);
	193	outb(WRT_EN\|0x00\|CLK_ON , BASEPORT);
	194	}
	195	}
4286c6f6 MCC	196	outb(0x00, BASEPORT);
4286c6f6 MCC	197
1da177e4	198	spin_unlock(&lock);
4286c6f6 MCC	199
4286c6f6 MCC	200	return 0;
1da177e4 LT	201	}
	202
	203	static int tt_getsigstr(struct tt_device dev) / TODO */
	204	{
	205	if (inb(io) & 2) /* bit set = no signal present */
	206	return 0;
	207	return 1; /* signal present */
	208	}
	209
1de69238 DL	210	static int vidioc_querycap(struct file file, void priv,
	211	struct v4l2_capability *v)
	212	{
	213	strlcpy(v->driver, "radio-terratec", sizeof(v->driver));
	214	strlcpy(v->card, "ActiveRadio", sizeof(v->card));
	215	sprintf(v->bus_info, "ISA");
	216	v->version = RADIO_VERSION;
	217	v->capabilities = V4L2_CAP_TUNER;
	218	return 0;
	219	}
1da177e4	220
1de69238 DL	221	static int vidioc_g_tuner(struct file file, void priv,
1de69238 DL	222	struct v4l2_tuner *v)
1da177e4	223	{
c170ecf4	224	struct tt_device *tt = video_drvdata(file);
4286c6f6	225
1de69238 DL	226	if (v->index > 0)
1de69238 DL	227	return -EINVAL;
55ac7b69	228
1de69238 DL	229	strcpy(v->name, "FM");
	230	v->type = V4L2_TUNER_RADIO;
	231	v->rangelow = (87*16000);
	232	v->rangehigh = (108*16000);
	233	v->rxsubchans = V4L2_TUNER_SUB_MONO;
	234	v->capability = V4L2_TUNER_CAP_LOW;
	235	v->audmode = V4L2_TUNER_MODE_MONO;
	236	v->signal = 0xFFFF*tt_getsigstr(tt);
	237	return 0;
	238	}
55ac7b69	239
1de69238 DL	240	static int vidioc_s_tuner(struct file file, void priv,
	241	struct v4l2_tuner *v)
	242	{
	243	if (v->index > 0)
	244	return -EINVAL;
	245	return 0;
	246	}
55ac7b69	247
1de69238 DL	248	static int vidioc_s_frequency(struct file file, void priv,
	249	struct v4l2_frequency *f)
	250	{
c170ecf4	251	struct tt_device *tt = video_drvdata(file);
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	{
c170ecf4	261	struct tt_device *tt = video_drvdata(file);
55ac7b69	262
1de69238 DL	263	f->type = V4L2_TUNER_RADIO;
	264	f->frequency = tt->curfreq;
	265	return 0;
	266	}
55ac7b69	267
1de69238 DL	268	static int vidioc_queryctrl(struct file file, void priv,
	269	struct v4l2_queryctrl *qc)
	270	{
	271	int i;
55ac7b69	272
1de69238 DL	273	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	274	if (qc->id && qc->id == radio_qctrl[i].id) {
	275	memcpy(qc, &(radio_qctrl[i]),
	276	sizeof(*qc));
1da177e4 LT	277	return 0;
1da177e4 LT	278	}
1de69238 DL	279	}
	280	return -EINVAL;
	281	}
55ac7b69	282
1de69238 DL	283	static int vidioc_g_ctrl(struct file file, void priv,
	284	struct v4l2_control *ctrl)
	285	{
c170ecf4	286	struct tt_device *tt = video_drvdata(file);
55ac7b69	287
1de69238 DL	288	switch (ctrl->id) {
	289	case V4L2_CID_AUDIO_MUTE:
	290	if (tt->muted)
	291	ctrl->value = 1;
	292	else
	293	ctrl->value = 0;
	294	return 0;
	295	case V4L2_CID_AUDIO_VOLUME:
	296	ctrl->value = tt->curvol * 6554;
	297	return 0;
	298	}
	299	return -EINVAL;
	300	}
55ac7b69	301
1de69238 DL	302	static int vidioc_s_ctrl(struct file file, void priv,
	303	struct v4l2_control *ctrl)
	304	{
c170ecf4	305	struct tt_device *tt = video_drvdata(file);
1de69238 DL	306
	307	switch (ctrl->id) {
	308	case V4L2_CID_AUDIO_MUTE:
	309	if (ctrl->value)
	310	tt_mute(tt);
	311	else
	312	tt_setvol(tt,tt->curvol);
	313	return 0;
	314	case V4L2_CID_AUDIO_VOLUME:
	315	tt_setvol(tt,ctrl->value);
	316	return 0;
1da177e4	317	}
1de69238 DL	318	return -EINVAL;
	319	}
	320
	321	static int vidioc_g_audio(struct file file, void priv,
	322	struct v4l2_audio *a)
	323	{
	324	if (a->index > 1)
	325	return -EINVAL;
	326
	327	strcpy(a->name, "Radio");
	328	a->capability = V4L2_AUDCAP_STEREO;
	329	return 0;
	330	}
	331
	332	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	333	{
	334	*i = 0;
	335	return 0;
1da177e4 LT	336	}
1da177e4 LT	337
1de69238	338	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
1da177e4	339	{
1de69238 DL	340	if (i != 0)
	341	return -EINVAL;
	342	return 0;
	343	}
	344
	345	static int vidioc_s_audio(struct file file, void priv,
	346	struct v4l2_audio *a)
	347	{
	348	if (a->index != 0)
	349	return -EINVAL;
	350	return 0;
1da177e4 LT	351	}
	352
	353	static struct tt_device terratec_unit;
	354
bec43661	355	static int terratec_exclusive_open(struct file *file)
3ca685aa HV	356	{
	357	return test_and_set_bit(0, &terratec_unit.in_use) ? -EBUSY : 0;
	358	}
	359
bec43661	360	static int terratec_exclusive_release(struct file *file)
3ca685aa HV	361	{
	362	clear_bit(0, &terratec_unit.in_use);
	363	return 0;
	364	}
	365
bec43661	366	static const struct v4l2_file_operations terratec_fops = {
1da177e4	367	.owner = THIS_MODULE,
3ca685aa HV	368	.open = terratec_exclusive_open,
3ca685aa HV	369	.release = terratec_exclusive_release,
1de69238	370	.ioctl = video_ioctl2,
1da177e4 LT	371	};
1da177e4 LT	372
a399810c	373	static const struct v4l2_ioctl_ops terratec_ioctl_ops = {
1de69238 DL	374	.vidioc_querycap = vidioc_querycap,
	375	.vidioc_g_tuner = vidioc_g_tuner,
	376	.vidioc_s_tuner = vidioc_s_tuner,
	377	.vidioc_g_frequency = vidioc_g_frequency,
	378	.vidioc_s_frequency = vidioc_s_frequency,
	379	.vidioc_queryctrl = vidioc_queryctrl,
	380	.vidioc_g_ctrl = vidioc_g_ctrl,
	381	.vidioc_s_ctrl = vidioc_s_ctrl,
	382	.vidioc_g_audio = vidioc_g_audio,
	383	.vidioc_s_audio = vidioc_s_audio,
	384	.vidioc_g_input = vidioc_g_input,
	385	.vidioc_s_input = vidioc_s_input,
1da177e4 LT	386	};
1da177e4 LT	387
a399810c	388	static struct video_device terratec_radio = {
a399810c	389	.name = "TerraTec ActiveRadio",
a399810c HV	390	.fops = &terratec_fops,
a399810c HV	391	.ioctl_ops = &terratec_ioctl_ops,
aa5e90af	392	.release = video_device_release_empty,
a399810c HV	393	};
a399810c HV	394
1da177e4 LT	395	static int __init terratec_init(void)
	396	{
	397	if(io==-1)
	398	{
	399	printk(KERN_ERR "You must set an I/O address with io=0x???\n");
	400	return -EINVAL;
	401	}
4286c6f6	402	if (!request_region(io, 2, "terratec"))
1da177e4 LT	403	{
	404	printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io);
	405	return -EBUSY;
	406	}
	407
601e9444	408	video_set_drvdata(&terratec_radio, &terratec_unit);
4286c6f6	409
1da177e4	410	spin_lock_init(&lock);
4286c6f6	411
cba99ae8	412	if (video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
1da177e4 LT	413	release_region(io,2);
	414	return -EINVAL;
	415	}
4286c6f6	416
1da177e4 LT	417	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n");
1da177e4 LT	418
4286c6f6	419	/* mute card - prevents noisy bootups */
1da177e4 LT	420
	421	/* this ensures that the volume is all the way down */
	422	cardWriteVol(0);
	423	terratec_unit.curvol = 0;
	424
	425	return 0;
	426	}
	427
	428	MODULE_AUTHOR("R.OFFERMANNS & others");
	429	MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
	430	MODULE_LICENSE("GPL");
	431	module_param(io, int, 0);
	432	MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
	433	module_param(radio_nr, int, 0);
	434
	435	static void __exit terratec_cleanup_module(void)
	436	{
	437	video_unregister_device(&terratec_radio);
	438	release_region(io,2);
4286c6f6	439	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n");
1da177e4 LT	440	}
	441
	442	module_init(terratec_init);
	443	module_exit(terratec_cleanup_module);
	444