[deliverable/linux.git] / drivers / media / radio / radio-maxiradio.c

/*
 * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
 * (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
 *
 * Based in the radio Maestro PCI driver. Actually it uses the same chip
 * for radio but different pci controller.
 *
 * I didn't have any specs I reversed engineered the protocol from
 * the windows driver (radio.dll).
 *
 * The card uses the TEA5757 chip that includes a search function but it
 * is useless as I haven't found any way to read back the frequency. If
 * anybody does please mail me.
 *
 * For the pdf file see:
 * http://www.semiconductors.philips.com/pip/TEA5757H/V1
 *
 *
 * CHANGES:
 *   0.75b
 *     - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
 *
 *   0.75
 *     - tiding up
 *     - removed support for multiple devices as it didn't work anyway
 *
 * BUGS:
 *   - card unmutes if you change frequency
 *
 */


#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/mutex.h>

#include <linux/pci.h>
#include <linux/videodev.h>
#include <media/v4l2-common.h>

/* version 0.75      Sun Feb  4 22:51:27 EET 2001 */
#define DRIVER_VERSION	"0.75"

#ifndef PCI_VENDOR_ID_GUILLEMOT
#define PCI_VENDOR_ID_GUILLEMOT 0x5046
#endif

#ifndef PCI_DEVICE_ID_GUILLEMOT
#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
#endif


/* TEA5757 pin mappings */
static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;

static int radio_nr = -1;
module_param(radio_nr, int, 0);


#define FREQ_LO		 50*16000
#define FREQ_HI		150*16000

#define FREQ_IF         171200 /* 10.7*16000   */
#define FREQ_STEP       200    /* 12.5*16      */

#define FREQ2BITS(x)	((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
			/(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */

#define BITS2FREQ(x)	((x) * FREQ_STEP - FREQ_IF)


static int radio_ioctl(struct inode *inode, struct file *file,
		       unsigned int cmd, unsigned long arg);

static struct file_operations maxiradio_fops = {
	.owner		= THIS_MODULE,
	.open           = video_exclusive_open,
	.release        = video_exclusive_release,
	.ioctl		= radio_ioctl,
	.compat_ioctl	= v4l_compat_ioctl32,
	.llseek         = no_llseek,
};
static struct video_device maxiradio_radio =
{
	.owner		= THIS_MODULE,
	.name		= "Maxi Radio FM2000 radio",
	.type		= VID_TYPE_TUNER,
	.hardware	= VID_HARDWARE_SF16MI,
	.fops           = &maxiradio_fops,
};

static struct radio_device
{
	__u16	io,	/* base of radio io */
		muted,	/* VIDEO_AUDIO_MUTE */
		stereo,	/* VIDEO_TUNER_STEREO_ON */
		tuned;	/* signal strength (0 or 0xffff) */

	unsigned long freq;

	struct mutex lock;
} radio_unit = {0, 0, 0, 0, };


static void outbit(unsigned long bit, __u16 io)
{
	if(bit != 0)
		{
			outb(  power|wren|data     ,io); udelay(4);
			outb(  power|wren|data|clk ,io); udelay(4);
			outb(  power|wren|data     ,io); udelay(4);
		}
	else
		{
			outb(  power|wren          ,io); udelay(4);
			outb(  power|wren|clk      ,io); udelay(4);
			outb(  power|wren          ,io); udelay(4);
		}
}

static void turn_power(__u16 io, int p)
{
	if(p != 0) outb(power, io); else outb(0,io);
}


static void set_freq(__u16 io, __u32 data)
{
	unsigned long int si;
	int bl;

	/* TEA5757 shift register bits (see pdf) */

	outbit(0,io); // 24  search
	outbit(1,io); // 23  search up/down

	outbit(0,io); // 22  stereo/mono

	outbit(0,io); // 21  band
	outbit(0,io); // 20  band (only 00=FM works I think)

	outbit(0,io); // 19  port ?
	outbit(0,io); // 18  port ?

	outbit(0,io); // 17  search level
	outbit(0,io); // 16  search level

	si = 0x8000;
	for(bl = 1; bl <= 16 ; bl++) { outbit(data & si,io); si >>=1; }

	outb(power,io);
}

static int get_stereo(__u16 io)
{
	outb(power,io); udelay(4);
	return !(inb(io) & mo_st);
}

static int get_tune(__u16 io)
{
	outb(power+clk,io); udelay(4);
	return !(inb(io) & mo_st);
}


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

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

			memset(v,0,sizeof(*v));
			strcpy(v->name, "Maxi Radio FM2000 radio");
			v->type=VID_TYPE_TUNER;
			v->channels=v->audios=1;
			return 0;
		}
		case VIDIOCGTUNER: {
			struct video_tuner *v = arg;

			if(v->tuner)
				return -EINVAL;

			card->stereo = 0xffff * get_stereo(card->io);
			card->tuned = 0xffff * get_tune(card->io);

			v->flags = VIDEO_TUNER_LOW | card->stereo;
			v->signal = card->tuned;

			strcpy(v->name, "FM");

			v->rangelow = FREQ_LO;
			v->rangehigh = FREQ_HI;
			v->mode = VIDEO_MODE_AUTO;

			return 0;
		}
		case VIDIOCSTUNER: {
			struct video_tuner *v = arg;
			if(v->tuner!=0)
				return -EINVAL;
			return 0;
		}
		case VIDIOCGFREQ: {
			unsigned long *freq = arg;

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

			if (*freq < FREQ_LO || *freq > FREQ_HI)
				return -EINVAL;
			card->freq = *freq;
			set_freq(card->io, FREQ2BITS(card->freq));
			msleep(125);
			return 0;
		}
		case VIDIOCGAUDIO: {
			struct video_audio *v = arg;
			memset(v,0,sizeof(*v));
			strcpy(v->name, "Radio");
			v->flags=VIDEO_AUDIO_MUTABLE | card->muted;
			v->mode=VIDEO_SOUND_STEREO;
			return 0;
		}

		case VIDIOCSAUDIO: {
			struct video_audio *v = arg;

			if(v->audio)
				return -EINVAL;
			card->muted = v->flags & VIDEO_AUDIO_MUTE;
			if(card->muted)
				turn_power(card->io, 0);
			else
				set_freq(card->io, FREQ2BITS(card->freq));
			return 0;
		}
		case VIDIOCGUNIT: {
			struct video_unit *v = arg;

			v->video=VIDEO_NO_UNIT;
			v->vbi=VIDEO_NO_UNIT;
			v->radio=dev->minor;
			v->audio=0;
			v->teletext=VIDEO_NO_UNIT;
			return 0;
		}
		default: return -ENOIOCTLCMD;
	}
}

static int radio_ioctl(struct inode *inode, struct file *file,
		       unsigned int cmd, unsigned long arg)
{
	struct video_device *dev = video_devdata(file);
	struct radio_device *card=dev->priv;
	int ret;

	mutex_lock(&card->lock);
	ret = video_usercopy(inode, file, cmd, arg, radio_function);
	mutex_unlock(&card->lock);
	return ret;
}

MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
MODULE_LICENSE("GPL");


static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	if(!request_region(pci_resource_start(pdev, 0),
			   pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
		printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n");
		goto err_out;
	}

	if (pci_enable_device(pdev))
		goto err_out_free_region;

	radio_unit.io = pci_resource_start(pdev, 0);
	mutex_init(&radio_unit.lock);
	maxiradio_radio.priv = &radio_unit;

	if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr)==-1) {
		printk("radio-maxiradio: can't register device!");
		goto err_out_free_region;
	}

	printk(KERN_INFO "radio-maxiradio: version "
	       DRIVER_VERSION
	       " time "
	       __TIME__ "  "
	       __DATE__
	       "\n");

	printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
	       radio_unit.io);
	return 0;

err_out_free_region:
	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
err_out:
	return -ENODEV;
}

static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
{
	video_unregister_device(&maxiradio_radio);
	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
}

static struct pci_device_id maxiradio_pci_tbl[] = {
	{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
		PCI_ANY_ID, PCI_ANY_ID, },
	{ 0,}
};

MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);

static struct pci_driver maxiradio_driver = {
	.name		= "radio-maxiradio",
	.id_table	= maxiradio_pci_tbl,
	.probe		= maxiradio_init_one,
	.remove		= __devexit_p(maxiradio_remove_one),
};

static int __init maxiradio_radio_init(void)
{
	return pci_register_driver(&maxiradio_driver);
}

static void __exit maxiradio_radio_exit(void)
{
	pci_unregister_driver(&maxiradio_driver);
}

module_init(maxiradio_radio_init);
module_exit(maxiradio_radio_exit);
Commit	Line	Data
4286c6f6 MCC	1	/*
4286c6f6 MCC	2	* Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
1da177e4 LT	3	* (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
	4	*
	5	* Based in the radio Maestro PCI driver. Actually it uses the same chip
	6	* for radio but different pci controller.
	7	*
	8	* I didn't have any specs I reversed engineered the protocol from
4286c6f6	9	* the windows driver (radio.dll).
1da177e4 LT	10	*
1da177e4 LT	11	* The card uses the TEA5757 chip that includes a search function but it
4286c6f6	12	* is useless as I haven't found any way to read back the frequency. If
1da177e4 LT	13	* anybody does please mail me.
	14	*
	15	* For the pdf file see:
	16	* http://www.semiconductors.philips.com/pip/TEA5757H/V1
	17	*
	18	*
	19	* CHANGES:
	20	* 0.75b
	21	* - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
	22	*
	23	* 0.75
	24	* - tiding up
	25	* - removed support for multiple devices as it didn't work anyway
	26	*
4286c6f6	27	* BUGS:
1da177e4 LT	28	* - card unmutes if you change frequency
	29	*
	30	*/
	31
	32
	33	#include <linux/module.h>
	34	#include <linux/init.h>
	35	#include <linux/ioport.h>
	36	#include <linux/delay.h>
	37	#include <linux/sched.h>
	38	#include <asm/io.h>
	39	#include <asm/uaccess.h>
3593cab5 IM	40	#include <linux/mutex.h>
3593cab5 IM	41
1da177e4 LT	42	#include <linux/pci.h>
1da177e4 LT	43	#include <linux/videodev.h>
5e87efa3	44	#include <media/v4l2-common.h>
1da177e4 LT	45
	46	/* version 0.75 Sun Feb 4 22:51:27 EET 2001 */
	47	#define DRIVER_VERSION "0.75"
	48
	49	#ifndef PCI_VENDOR_ID_GUILLEMOT
	50	#define PCI_VENDOR_ID_GUILLEMOT 0x5046
	51	#endif
	52
	53	#ifndef PCI_DEVICE_ID_GUILLEMOT
	54	#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
	55	#endif
	56
	57
	58	/* TEA5757 pin mappings */
	59	static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
	60
	61	static int radio_nr = -1;
	62	module_param(radio_nr, int, 0);
	63
	64
	65	#define FREQ_LO 50*16000
	66	#define FREQ_HI 150*16000
	67
	68	#define FREQ_IF 171200 /* 10.716000 /
	69	#define FREQ_STEP 200 /* 12.516 /
	70
	71	#define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
	72	/(FREQ_STEP<<2))<<2) /* (x==fmhz161000) -> bits */
	73
	74	#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
	75
	76
	77	static int radio_ioctl(struct inode inode, struct file file,
	78	unsigned int cmd, unsigned long arg);
	79
	80	static struct file_operations maxiradio_fops = {
	81	.owner = THIS_MODULE,
	82	.open = video_exclusive_open,
	83	.release = video_exclusive_release,
4286c6f6	84	.ioctl = radio_ioctl,
0d0fbf81	85	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	86	.llseek = no_llseek,
	87	};
	88	static struct video_device maxiradio_radio =
	89	{
	90	.owner = THIS_MODULE,
	91	.name = "Maxi Radio FM2000 radio",
	92	.type = VID_TYPE_TUNER,
	93	.hardware = VID_HARDWARE_SF16MI,
	94	.fops = &maxiradio_fops,
	95	};
	96
	97	static struct radio_device
	98	{
	99	__u16 io, /* base of radio io */
	100	muted, /* VIDEO_AUDIO_MUTE */
4286c6f6	101	stereo, /* VIDEO_TUNER_STEREO_ON */
1da177e4	102	tuned; /* signal strength (0 or 0xffff) */
4286c6f6	103
1da177e4	104	unsigned long freq;
4286c6f6	105
3593cab5	106	struct mutex lock;
1da177e4 LT	107	} radio_unit = {0, 0, 0, 0, };
	108
	109
	110	static void outbit(unsigned long bit, __u16 io)
	111	{
	112	if(bit != 0)
	113	{
	114	outb( power\|wren\|data ,io); udelay(4);
	115	outb( power\|wren\|data\|clk ,io); udelay(4);
	116	outb( power\|wren\|data ,io); udelay(4);
	117	}
4286c6f6	118	else
1da177e4 LT	119	{
	120	outb( power\|wren ,io); udelay(4);
	121	outb( power\|wren\|clk ,io); udelay(4);
	122	outb( power\|wren ,io); udelay(4);
	123	}
	124	}
	125
	126	static void turn_power(__u16 io, int p)
	127	{
	128	if(p != 0) outb(power, io); else outb(0,io);
	129	}
	130
	131
	132	static void set_freq(__u16 io, __u32 data)
	133	{
	134	unsigned long int si;
	135	int bl;
4286c6f6	136
1da177e4 LT	137	/* TEA5757 shift register bits (see pdf) */
1da177e4 LT	138
4286c6f6	139	outbit(0,io); // 24 search
1da177e4	140	outbit(1,io); // 23 search up/down
4286c6f6	141
1da177e4 LT	142	outbit(0,io); // 22 stereo/mono
	143
	144	outbit(0,io); // 21 band
	145	outbit(0,io); // 20 band (only 00=FM works I think)
	146
	147	outbit(0,io); // 19 port ?
	148	outbit(0,io); // 18 port ?
4286c6f6	149
1da177e4 LT	150	outbit(0,io); // 17 search level
1da177e4 LT	151	outbit(0,io); // 16 search level
4286c6f6	152
1da177e4 LT	153	si = 0x8000;
1da177e4 LT	154	for(bl = 1; bl <= 16 ; bl++) { outbit(data & si,io); si >>=1; }
4286c6f6	155
1da177e4 LT	156	outb(power,io);
	157	}
	158
	159	static int get_stereo(__u16 io)
4286c6f6	160	{
1da177e4 LT	161	outb(power,io); udelay(4);
	162	return !(inb(io) & mo_st);
	163	}
	164
	165	static int get_tune(__u16 io)
4286c6f6	166	{
1da177e4 LT	167	outb(power+clk,io); udelay(4);
	168	return !(inb(io) & mo_st);
	169	}
	170
	171
77933d72	172	static inline int radio_function(struct inode inode, struct file file,
1da177e4 LT	173	unsigned int cmd, void *arg)
	174	{
	175	struct video_device *dev = video_devdata(file);
	176	struct radio_device *card=dev->priv;
	177
	178	switch(cmd) {
	179	case VIDIOCGCAP: {
	180	struct video_capability *v = arg;
4286c6f6	181
1da177e4 LT	182	memset(v,0,sizeof(*v));
	183	strcpy(v->name, "Maxi Radio FM2000 radio");
	184	v->type=VID_TYPE_TUNER;
	185	v->channels=v->audios=1;
	186	return 0;
	187	}
	188	case VIDIOCGTUNER: {
	189	struct video_tuner *v = arg;
4286c6f6	190
1da177e4 LT	191	if(v->tuner)
1da177e4 LT	192	return -EINVAL;
4286c6f6	193
1da177e4 LT	194	card->stereo = 0xffff * get_stereo(card->io);
1da177e4 LT	195	card->tuned = 0xffff * get_tune(card->io);
4286c6f6	196
1da177e4 LT	197	v->flags = VIDEO_TUNER_LOW \| card->stereo;
1da177e4 LT	198	v->signal = card->tuned;
4286c6f6	199
1da177e4	200	strcpy(v->name, "FM");
4286c6f6	201
1da177e4 LT	202	v->rangelow = FREQ_LO;
	203	v->rangehigh = FREQ_HI;
	204	v->mode = VIDEO_MODE_AUTO;
4286c6f6	205
1da177e4 LT	206	return 0;
	207	}
	208	case VIDIOCSTUNER: {
	209	struct video_tuner *v = arg;
	210	if(v->tuner!=0)
	211	return -EINVAL;
	212	return 0;
	213	}
	214	case VIDIOCGFREQ: {
	215	unsigned long *freq = arg;
4286c6f6	216
1da177e4 LT	217	*freq = card->freq;
	218	return 0;
	219	}
	220	case VIDIOCSFREQ: {
	221	unsigned long *freq = arg;
4286c6f6	222
1da177e4 LT	223	if (freq < FREQ_LO \|\| freq > FREQ_HI)
	224	return -EINVAL;
	225	card->freq = *freq;
	226	set_freq(card->io, FREQ2BITS(card->freq));
	227	msleep(125);
	228	return 0;
	229	}
4286c6f6	230	case VIDIOCGAUDIO: {
1da177e4 LT	231	struct video_audio *v = arg;
	232	memset(v,0,sizeof(*v));
	233	strcpy(v->name, "Radio");
	234	v->flags=VIDEO_AUDIO_MUTABLE \| card->muted;
	235	v->mode=VIDEO_SOUND_STEREO;
4286c6f6	236	return 0;
1da177e4	237	}
4286c6f6	238
1da177e4 LT	239	case VIDIOCSAUDIO: {
1da177e4 LT	240	struct video_audio *v = arg;
4286c6f6	241
1da177e4 LT	242	if(v->audio)
	243	return -EINVAL;
	244	card->muted = v->flags & VIDEO_AUDIO_MUTE;
	245	if(card->muted)
	246	turn_power(card->io, 0);
	247	else
	248	set_freq(card->io, FREQ2BITS(card->freq));
	249	return 0;
	250	}
	251	case VIDIOCGUNIT: {
	252	struct video_unit *v = arg;
4286c6f6	253
1da177e4 LT	254	v->video=VIDEO_NO_UNIT;
	255	v->vbi=VIDEO_NO_UNIT;
	256	v->radio=dev->minor;
	257	v->audio=0;
	258	v->teletext=VIDEO_NO_UNIT;
4286c6f6	259	return 0;
1da177e4 LT	260	}
	261	default: return -ENOIOCTLCMD;
	262	}
	263	}
	264
	265	static int radio_ioctl(struct inode inode, struct file file,
	266	unsigned int cmd, unsigned long arg)
	267	{
	268	struct video_device *dev = video_devdata(file);
	269	struct radio_device *card=dev->priv;
	270	int ret;
4286c6f6	271
3593cab5	272	mutex_lock(&card->lock);
1da177e4	273	ret = video_usercopy(inode, file, cmd, arg, radio_function);
3593cab5	274	mutex_unlock(&card->lock);
1da177e4 LT	275	return ret;
	276	}
	277
	278	MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
	279	MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
	280	MODULE_LICENSE("GPL");
	281
	282
	283	static int __devinit maxiradio_init_one(struct pci_dev pdev, const struct pci_device_id ent)
	284	{
	285	if(!request_region(pci_resource_start(pdev, 0),
4286c6f6 MCC	286	pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
	287	printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n");
	288	goto err_out;
1da177e4 LT	289	}
	290
	291	if (pci_enable_device(pdev))
4286c6f6	292	goto err_out_free_region;
1da177e4 LT	293
1da177e4 LT	294	radio_unit.io = pci_resource_start(pdev, 0);
3593cab5	295	mutex_init(&radio_unit.lock);
1da177e4 LT	296	maxiradio_radio.priv = &radio_unit;
	297
	298	if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr)==-1) {
4286c6f6 MCC	299	printk("radio-maxiradio: can't register device!");
4286c6f6 MCC	300	goto err_out_free_region;
1da177e4 LT	301	}
	302
	303	printk(KERN_INFO "radio-maxiradio: version "
	304	DRIVER_VERSION
	305	" time "
	306	__TIME__ " "
	307	__DATE__
	308	"\n");
	309
	310	printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
	311	radio_unit.io);
	312	return 0;
	313
	314	err_out_free_region:
	315	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
	316	err_out:
	317	return -ENODEV;
	318	}
	319
	320	static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
	321	{
	322	video_unregister_device(&maxiradio_radio);
	323	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
	324	}
	325
	326	static struct pci_device_id maxiradio_pci_tbl[] = {
	327	{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
	328	PCI_ANY_ID, PCI_ANY_ID, },
	329	{ 0,}
	330	};
	331
	332	MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
	333
	334	static struct pci_driver maxiradio_driver = {
	335	.name = "radio-maxiradio",
	336	.id_table = maxiradio_pci_tbl,
	337	.probe = maxiradio_init_one,
	338	.remove = __devexit_p(maxiradio_remove_one),
	339	};
	340
	341	static int __init maxiradio_radio_init(void)
	342	{
9bfab8ce	343	return pci_register_driver(&maxiradio_driver);
1da177e4 LT	344	}
	345
	346	static void __exit maxiradio_radio_exit(void)
	347	{
	348	pci_unregister_driver(&maxiradio_driver);
	349	}
	350
	351	module_init(maxiradio_radio_init);
	352	module_exit(maxiradio_radio_exit);