[deliverable/linux.git] / drivers / media / radio / radio-sf16fmr2.c

/* SF16FMR2 radio driver for Linux radio support
 * heavily based on fmi driver...
 * (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
 *
 * Notes on the hardware
 *
 *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
 *  No volume control - only mute/unmute - you have to use line volume
 *
 *  For read stereo/mono you must wait 0.1 sec after set frequency and
 *  card unmuted so I set frequency on unmute
 *  Signal handling seem to work only on autoscanning (not implemented)
 */

#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/videodev.h>	/* kernel radio structs		*/
#include <media/v4l2-common.h>
#include <linux/mutex.h>

static struct mutex lock;

#undef DEBUG
//#define DEBUG 1

#ifdef DEBUG
# define  debug_print(s) printk s
#else
# define  debug_print(s)
#endif

/* this should be static vars for module size */
struct fmr2_device
{
	int port;
	int curvol; /* 0-65535, if not volume 0 or 65535 */
	int mute;
	int stereo; /* card is producing stereo audio */
	unsigned long curfreq; /* freq in kHz */
	int card_type;
	__u32 flags;
};

static int io = 0x384;
static int radio_nr = -1;

/* hw precision is 12.5 kHz
 * It is only useful to give freq in intervall of 200 (=0.0125Mhz),
 * other bits will be truncated
 */
#define RSF16_ENCODE(x)	((x)/200+856)
#define RSF16_MINFREQ 87*16000
#define RSF16_MAXFREQ 108*16000

static inline void wait(int n,int port)
{
	for (;n;--n) inb(port);
}

static void outbits(int bits, unsigned int data, int nWait, int port)
{
	int bit;
	for(;--bits>=0;) {
		bit = (data>>bits) & 1;
		outb(bit,port);
		wait(nWait,port);
		outb(bit|2,port);
		wait(nWait,port);
		outb(bit,port);
		wait(nWait,port);
	}
}

static inline void fmr2_mute(int port)
{
	outb(0x00, port);
	wait(4,port);
}

static inline void fmr2_unmute(int port)
{
	outb(0x04, port);
	wait(4,port);
}

static inline int fmr2_stereo_mode(int port)
{
	int n = inb(port);
	outb(6,port);
	inb(port);
	n = ((n>>3)&1)^1;
	debug_print((KERN_DEBUG "stereo: %d\n", n));
	return n;
}

static int fmr2_product_info(struct fmr2_device *dev)
{
	int n = inb(dev->port);
	n &= 0xC1;
	if (n == 0)
	{
		/* this should support volume set */
		dev->card_type = 12;
		return 0;
	}
	/* not volume (mine is 11) */
	dev->card_type = (n==128)?11:0;
	return n;
}

static inline int fmr2_getsigstr(struct fmr2_device *dev)
{
	/* !!! work only if scanning freq */
	int port = dev->port, res = 0xffff;
	outb(5,port);
	wait(4,port);
	if (!(inb(port)&1)) res = 0;
	debug_print((KERN_DEBUG "signal: %d\n", res));
	return res;
}

/* set frequency and unmute card */
static int fmr2_setfreq(struct fmr2_device *dev)
{
	int port = dev->port;
	unsigned long freq = dev->curfreq;

	fmr2_mute(port);

	/* 0x42 for mono output
	 * 0x102 forward scanning
	 * 0x182 scansione avanti
	 */
	outbits(9,0x2,3,port);
	outbits(16,RSF16_ENCODE(freq),2,port);

	fmr2_unmute(port);

	/* wait 0.11 sec */
	msleep(110);

	/* NOTE if mute this stop radio
	   you must set freq on unmute */
	dev->stereo = fmr2_stereo_mode(port);
	return 0;
}

/* !!! not tested, in my card this does't work !!! */
static int fmr2_setvolume(struct fmr2_device *dev)
{
	int i,a,n, port = dev->port;

	if (dev->card_type != 11) return 1;

	switch( (dev->curvol+(1<<11)) >> 12 )
	{
	case 0: case 1: n = 0x21; break;
	case 2: n = 0x84; break;
	case 3: n = 0x90; break;
	case 4: n = 0x104; break;
	case 5: n = 0x110; break;
	case 6: n = 0x204; break;
	case 7: n = 0x210; break;
	case 8: n = 0x402; break;
	case 9: n = 0x404; break;
	default:
	case 10: n = 0x408; break;
	case 11: n = 0x410; break;
	case 12: n = 0x801; break;
	case 13: n = 0x802; break;
	case 14: n = 0x804; break;
	case 15: n = 0x808; break;
	case 16: n = 0x810; break;
	}
	for(i=12;--i>=0;)
	{
		a = ((n >> i) & 1) << 6; /* if (a=0) a= 0; else a= 0x40; */
		outb(a|4, port);
		wait(4,port);
		outb(a|0x24, port);
		wait(4,port);
		outb(a|4, port);
		wait(4,port);
	}
	for(i=6;--i>=0;)
	{
		a = ((0x18 >> i) & 1) << 6;
		outb(a|4, port);
		wait(4,port);
		outb(a|0x24, port);
		wait(4,port);
		outb(a|4, port);
		wait(4,port);
	}
	wait(4,port);
	outb(0x14, port);

	return 0;
}

static int fmr2_do_ioctl(struct inode *inode, struct file *file,
		      unsigned int cmd, void *arg)
{
	struct video_device *dev = video_devdata(file);
	struct fmr2_device *fmr2 = dev->priv;
	debug_print((KERN_DEBUG "freq %ld flags %d vol %d mute %d "
		"stereo %d type %d\n",
		fmr2->curfreq, fmr2->flags, fmr2->curvol, fmr2->mute,
		fmr2->stereo, fmr2->card_type));

	switch(cmd)
	{
		case VIDIOCGCAP:
		{
			struct video_capability *v = arg;
			memset(v,0,sizeof(*v));
			strcpy(v->name, "SF16-FMR2 radio");
			v->type=VID_TYPE_TUNER;
			v->channels=1;
			v->audios=1;
			return 0;
		}
		case VIDIOCGTUNER:
		{
			struct video_tuner *v = arg;
			int mult;

			if(v->tuner)     /* Only 1 tuner */
				return -EINVAL;
			strcpy(v->name, "FM");
			mult = (fmr2->flags & VIDEO_TUNER_LOW) ? 1 : 1000;
			v->rangelow = RSF16_MINFREQ/mult;
			v->rangehigh = RSF16_MAXFREQ/mult;
			v->flags = fmr2->flags | VIDEO_AUDIO_MUTABLE;
			if (fmr2->mute)
				v->flags |= VIDEO_AUDIO_MUTE;
			v->mode=VIDEO_MODE_AUTO;
			mutex_lock(&lock);
			v->signal = fmr2_getsigstr(fmr2);
			mutex_unlock(&lock);
			return 0;
		}
		case VIDIOCSTUNER:
		{
			struct video_tuner *v = arg;
			if (v->tuner!=0)
				return -EINVAL;
			fmr2->flags = v->flags & VIDEO_TUNER_LOW;
			return 0;
		}
		case VIDIOCGFREQ:
		{
			unsigned long *freq = arg;
			*freq = fmr2->curfreq;
			if (!(fmr2->flags & VIDEO_TUNER_LOW))
				*freq /= 1000;
			return 0;
		}
		case VIDIOCSFREQ:
		{
			unsigned long *freq = arg;
			if (!(fmr2->flags & VIDEO_TUNER_LOW))
				*freq *= 1000;
			if ( *freq < RSF16_MINFREQ || *freq > RSF16_MAXFREQ )
				return -EINVAL;
			/* rounding in steps of 200 to match th freq
			 * that will be used
			 */
			fmr2->curfreq = (*freq/200)*200;

			/* set card freq (if not muted) */
			if (fmr2->curvol && !fmr2->mute)
			{
				mutex_lock(&lock);
				fmr2_setfreq(fmr2);
				mutex_unlock(&lock);
			}
			return 0;
		}
		case VIDIOCGAUDIO:
		{
			struct video_audio *v = arg;
			memset(v,0,sizeof(*v));
			/* !!! do not return VIDEO_AUDIO_MUTE */
			v->flags = VIDEO_AUDIO_MUTABLE;
			strcpy(v->name, "Radio");
			/* get current stereo mode */
			v->mode = fmr2->stereo ? VIDEO_SOUND_STEREO: VIDEO_SOUND_MONO;
			/* volume supported ? */
			if (fmr2->card_type == 11)
			{
				v->flags |= VIDEO_AUDIO_VOLUME;
				v->step = 1 << 12;
				v->volume = fmr2->curvol;
			}
			debug_print((KERN_DEBUG "Get flags %d vol %d\n", v->flags, v->volume));
			return 0;
		}
		case VIDIOCSAUDIO:
		{
			struct video_audio *v = arg;
			if(v->audio)
				return -EINVAL;
			debug_print((KERN_DEBUG "Set flags %d vol %d\n", v->flags, v->volume));
			/* set volume */
			if (v->flags & VIDEO_AUDIO_VOLUME)
				fmr2->curvol = v->volume; /* !!! set with precision */
			if (fmr2->card_type != 11) fmr2->curvol = 65535;
			fmr2->mute = 0;
			if (v->flags & VIDEO_AUDIO_MUTE)
				fmr2->mute = 1;
#ifdef DEBUG
			if (fmr2->curvol && !fmr2->mute)
				printk(KERN_DEBUG "unmute\n");
			else
				printk(KERN_DEBUG "mute\n");
#endif
			mutex_lock(&lock);
			if (fmr2->curvol && !fmr2->mute)
			{
				fmr2_setvolume(fmr2);
				fmr2_setfreq(fmr2);
			}
			else fmr2_mute(fmr2->port);
			mutex_unlock(&lock);
			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; /* How do we find out this??? */
			v->teletext=VIDEO_NO_UNIT;
			return 0;
		}
		default:
			return -ENOIOCTLCMD;
	}
}

static int fmr2_ioctl(struct inode *inode, struct file *file,
		      unsigned int cmd, unsigned long arg)
 {
	return video_usercopy(inode, file, cmd, arg, fmr2_do_ioctl);
}

static struct fmr2_device fmr2_unit;

static struct file_operations fmr2_fops = {
	.owner          = THIS_MODULE,
	.open           = video_exclusive_open,
	.release        = video_exclusive_release,
	.ioctl          = fmr2_ioctl,
	.compat_ioctl	= v4l_compat_ioctl32,
	.llseek         = no_llseek,
};

static struct video_device fmr2_radio=
{
	.owner		= THIS_MODULE,
	.name		= "SF16FMR2 radio",
	. type		= VID_TYPE_TUNER,
	.hardware	= VID_HARDWARE_SF16FMR2,
	.fops		= &fmr2_fops,
};

static int __init fmr2_init(void)
{
	fmr2_unit.port = io;
	fmr2_unit.curvol = 0;
	fmr2_unit.mute = 0;
	fmr2_unit.curfreq = 0;
	fmr2_unit.stereo = 1;
	fmr2_unit.flags = VIDEO_TUNER_LOW;
	fmr2_unit.card_type = 0;
	fmr2_radio.priv = &fmr2_unit;

	mutex_init(&lock);

	if (request_region(io, 2, "sf16fmr2"))
	{
		printk(KERN_ERR "fmr2: port 0x%x already in use\n", io);
		return -EBUSY;
	}

	if(video_register_device(&fmr2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
	{
		release_region(io, 2);
		return -EINVAL;
	}

	printk(KERN_INFO "SF16FMR2 radio card driver at 0x%x.\n", io);
	debug_print((KERN_DEBUG "Mute %d Low %d\n",VIDEO_AUDIO_MUTE,VIDEO_TUNER_LOW));
	/* mute card - prevents noisy bootups */
	mutex_lock(&lock);
	fmr2_mute(io);
	fmr2_product_info(&fmr2_unit);
	mutex_unlock(&lock);
	debug_print((KERN_DEBUG "card_type %d\n", fmr2_unit.card_type));
	return 0;
}

MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
MODULE_LICENSE("GPL");

module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
module_param(radio_nr, int, 0);

static void __exit fmr2_cleanup_module(void)
{
	video_unregister_device(&fmr2_radio);
	release_region(io,2);
}

module_init(fmr2_init);
module_exit(fmr2_cleanup_module);

#ifndef MODULE

static int __init fmr2_setup_io(char *str)
{
	get_option(&str, &io);
	return 1;
}

__setup("sf16fmr2=", fmr2_setup_io);

#endif
Commit	Line	Data
1da177e4 LT	1	/* SF16FMR2 radio driver for Linux radio support
	2	* heavily based on fmi driver...
	3	* (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
	4	*
	5	* Notes on the hardware
	6	*
	7	* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
	8	* No volume control - only mute/unmute - you have to use line volume
	9	*
	10	* For read stereo/mono you must wait 0.1 sec after set frequency and
	11	* card unmuted so I set frequency on unmute
	12	* Signal handling seem to work only on autoscanning (not implemented)
	13	*/
	14
	15	#include <linux/module.h> /* Modules */
	16	#include <linux/init.h> /* Initdata */
fb911ee8	17	#include <linux/ioport.h> /* request_region */
1da177e4 LT	18	#include <linux/delay.h> /* udelay */
	19	#include <asm/io.h> /* outb, outb_p */
	20	#include <asm/uaccess.h> /* copy to/from user */
	21	#include <linux/videodev.h> /* kernel radio structs */
5e87efa3	22	#include <media/v4l2-common.h>
3593cab5	23	#include <linux/mutex.h>
1da177e4	24
3593cab5	25	static struct mutex lock;
1da177e4 LT	26
	27	#undef DEBUG
	28	//#define DEBUG 1
	29
	30	#ifdef DEBUG
	31	# define debug_print(s) printk s
	32	#else
	33	# define debug_print(s)
	34	#endif
	35
	36	/* this should be static vars for module size */
	37	struct fmr2_device
	38	{
	39	int port;
	40	int curvol; /* 0-65535, if not volume 0 or 65535 */
	41	int mute;
	42	int stereo; /* card is producing stereo audio */
	43	unsigned long curfreq; /* freq in kHz */
	44	int card_type;
	45	__u32 flags;
	46	};
	47
	48	static int io = 0x384;
	49	static int radio_nr = -1;
	50
	51	/* hw precision is 12.5 kHz
a58a414f	52	* It is only useful to give freq in intervall of 200 (=0.0125Mhz),
1da177e4 LT	53	* other bits will be truncated
	54	*/
	55	#define RSF16_ENCODE(x) ((x)/200+856)
	56	#define RSF16_MINFREQ 87*16000
	57	#define RSF16_MAXFREQ 108*16000
	58
	59	static inline void wait(int n,int port)
	60	{
	61	for (;n;--n) inb(port);
	62	}
	63
	64	static void outbits(int bits, unsigned int data, int nWait, int port)
	65	{
	66	int bit;
	67	for(;--bits>=0;) {
	68	bit = (data>>bits) & 1;
	69	outb(bit,port);
	70	wait(nWait,port);
	71	outb(bit\|2,port);
	72	wait(nWait,port);
	73	outb(bit,port);
	74	wait(nWait,port);
	75	}
	76	}
	77
	78	static inline void fmr2_mute(int port)
	79	{
	80	outb(0x00, port);
	81	wait(4,port);
	82	}
	83
	84	static inline void fmr2_unmute(int port)
	85	{
	86	outb(0x04, port);
	87	wait(4,port);
	88	}
	89
	90	static inline int fmr2_stereo_mode(int port)
	91	{
	92	int n = inb(port);
	93	outb(6,port);
	94	inb(port);
	95	n = ((n>>3)&1)^1;
	96	debug_print((KERN_DEBUG "stereo: %d\n", n));
	97	return n;
	98	}
	99
	100	static int fmr2_product_info(struct fmr2_device *dev)
	101	{
	102	int n = inb(dev->port);
	103	n &= 0xC1;
	104	if (n == 0)
	105	{
	106	/* this should support volume set */
	107	dev->card_type = 12;
	108	return 0;
	109	}
	110	/* not volume (mine is 11) */
	111	dev->card_type = (n==128)?11:0;
	112	return n;
	113	}
	114
	115	static inline int fmr2_getsigstr(struct fmr2_device *dev)
	116	{
117	/* !!! work only if scanning freq */
118	int port = dev->port, res = 0xffff;
119	outb(5,port);
120	wait(4,port);
121	if (!(inb(port)&1)) res = 0;
122	debug_print((KERN_DEBUG "signal: %d\n", res));
123	return res;
124	}
125
126	/* set frequency and unmute card */
127	static int fmr2_setfreq(struct fmr2_device *dev)
128	{
129	int port = dev->port;
130	unsigned long freq = dev->curfreq;
131
132	fmr2_mute(port);
133
134	/* 0x42 for mono output
135	* 0x102 forward scanning
136	* 0x182 scansione avanti
137	*/
138	outbits(9,0x2,3,port);
139	outbits(16,RSF16_ENCODE(freq),2,port);
140
141	fmr2_unmute(port);
142
143	/* wait 0.11 sec */
144	msleep(110);
145
146	/* NOTE if mute this stop radio
147	you must set freq on unmute */
148	dev->stereo = fmr2_stereo_mode(port);
149	return 0;
150	}
151
152	/* !!! not tested, in my card this does't work !!! */
153	static int fmr2_setvolume(struct fmr2_device *dev)
154	{
155	int i,a,n, port = dev->port;
156
157	if (dev->card_type != 11) return 1;
158
159	switch( (dev->curvol+(1<<11)) >> 12 )
160	{
161	case 0: case 1: n = 0x21; break;
162	case 2: n = 0x84; break;
163	case 3: n = 0x90; break;
164	case 4: n = 0x104; break;
165	case 5: n = 0x110; break;
166	case 6: n = 0x204; break;
167	case 7: n = 0x210; break;
168	case 8: n = 0x402; break;
169	case 9: n = 0x404; break;
170	default:
171	case 10: n = 0x408; break;
172	case 11: n = 0x410; break;
173	case 12: n = 0x801; break;
174	case 13: n = 0x802; break;
175	case 14: n = 0x804; break;
176	case 15: n = 0x808; break;
177	case 16: n = 0x810; break;
178	}
179	for(i=12;--i>=0;)
180	{
181	a = ((n >> i) & 1) << 6; /* if (a=0) a= 0; else a= 0x40; */
182	outb(a\|4, port);
183	wait(4,port);
184	outb(a\|0x24, port);
185	wait(4,port);
186	outb(a\|4, port);
187	wait(4,port);
188	}
189	for(i=6;--i>=0;)
190	{
191	a = ((0x18 >> i) & 1) << 6;
192	outb(a\|4, port);
193	wait(4,port);
194	outb(a\|0x24, port);
195	wait(4,port);
196	outb(a\|4, port);
197	wait(4,port);
198	}
199	wait(4,port);
200	outb(0x14, port);
201
202	return 0;
203	}
204
205	static int fmr2_do_ioctl(struct inode inode, struct file file,
4286c6f6	206	unsigned int cmd, void *arg)
1da177e4 LT	207	{
	208	struct video_device *dev = video_devdata(file);
	209	struct fmr2_device *fmr2 = dev->priv;
	210	debug_print((KERN_DEBUG "freq %ld flags %d vol %d mute %d "
	211	"stereo %d type %d\n",
	212	fmr2->curfreq, fmr2->flags, fmr2->curvol, fmr2->mute,
	213	fmr2->stereo, fmr2->card_type));
	214
	215	switch(cmd)
	216	{
	217	case VIDIOCGCAP:
	218	{
	219	struct video_capability *v = arg;
	220	memset(v,0,sizeof(*v));
	221	strcpy(v->name, "SF16-FMR2 radio");
	222	v->type=VID_TYPE_TUNER;
	223	v->channels=1;
	224	v->audios=1;
	225	return 0;
	226	}
	227	case VIDIOCGTUNER:
	228	{
	229	struct video_tuner *v = arg;
	230	int mult;
	231
	232	if(v->tuner) /* Only 1 tuner */
	233	return -EINVAL;
	234	strcpy(v->name, "FM");
	235	mult = (fmr2->flags & VIDEO_TUNER_LOW) ? 1 : 1000;
	236	v->rangelow = RSF16_MINFREQ/mult;
	237	v->rangehigh = RSF16_MAXFREQ/mult;
	238	v->flags = fmr2->flags \| VIDEO_AUDIO_MUTABLE;
	239	if (fmr2->mute)
	240	v->flags \|= VIDEO_AUDIO_MUTE;
	241	v->mode=VIDEO_MODE_AUTO;
3593cab5	242	mutex_lock(&lock);
1da177e4	243	v->signal = fmr2_getsigstr(fmr2);
3593cab5	244	mutex_unlock(&lock);
1da177e4 LT	245	return 0;
	246	}
	247	case VIDIOCSTUNER:
	248	{
	249	struct video_tuner *v = arg;
	250	if (v->tuner!=0)
	251	return -EINVAL;
	252	fmr2->flags = v->flags & VIDEO_TUNER_LOW;
	253	return 0;
	254	}
	255	case VIDIOCGFREQ:
	256	{
	257	unsigned long *freq = arg;
	258	*freq = fmr2->curfreq;
	259	if (!(fmr2->flags & VIDEO_TUNER_LOW))
	260	*freq /= 1000;
	261	return 0;
	262	}
	263	case VIDIOCSFREQ:
	264	{
	265	unsigned long *freq = arg;
	266	if (!(fmr2->flags & VIDEO_TUNER_LOW))
	267	freq = 1000;
	268	if ( freq < RSF16_MINFREQ \|\| freq > RSF16_MAXFREQ )
	269	return -EINVAL;
	270	/* rounding in steps of 200 to match th freq
	271	* that will be used
	272	*/
	273	fmr2->curfreq = (freq/200)200;
	274
	275	/* set card freq (if not muted) */
	276	if (fmr2->curvol && !fmr2->mute)
	277	{
3593cab5	278	mutex_lock(&lock);
1da177e4	279	fmr2_setfreq(fmr2);
3593cab5	280	mutex_unlock(&lock);
1da177e4 LT	281	}
	282	return 0;
	283	}
	284	case VIDIOCGAUDIO:
	285	{
	286	struct video_audio *v = arg;
	287	memset(v,0,sizeof(*v));
	288	/* !!! do not return VIDEO_AUDIO_MUTE */
	289	v->flags = VIDEO_AUDIO_MUTABLE;
	290	strcpy(v->name, "Radio");
	291	/* get current stereo mode */
	292	v->mode = fmr2->stereo ? VIDEO_SOUND_STEREO: VIDEO_SOUND_MONO;
	293	/* volume supported ? */
	294	if (fmr2->card_type == 11)
	295	{
	296	v->flags \|= VIDEO_AUDIO_VOLUME;
	297	v->step = 1 << 12;
	298	v->volume = fmr2->curvol;
	299	}
	300	debug_print((KERN_DEBUG "Get flags %d vol %d\n", v->flags, v->volume));
	301	return 0;
	302	}
	303	case VIDIOCSAUDIO:
	304	{
	305	struct video_audio *v = arg;
	306	if(v->audio)
	307	return -EINVAL;
	308	debug_print((KERN_DEBUG "Set flags %d vol %d\n", v->flags, v->volume));
	309	/* set volume */
	310	if (v->flags & VIDEO_AUDIO_VOLUME)
	311	fmr2->curvol = v->volume; /* !!! set with precision */
	312	if (fmr2->card_type != 11) fmr2->curvol = 65535;
	313	fmr2->mute = 0;
	314	if (v->flags & VIDEO_AUDIO_MUTE)
	315	fmr2->mute = 1;
	316	#ifdef DEBUG
	317	if (fmr2->curvol && !fmr2->mute)
	318	printk(KERN_DEBUG "unmute\n");
	319	else
	320	printk(KERN_DEBUG "mute\n");
	321	#endif
3593cab5	322	mutex_lock(&lock);
1da177e4 LT	323	if (fmr2->curvol && !fmr2->mute)
	324	{
	325	fmr2_setvolume(fmr2);
	326	fmr2_setfreq(fmr2);
	327	}
	328	else fmr2_mute(fmr2->port);
3593cab5	329	mutex_unlock(&lock);
1da177e4 LT	330	return 0;
	331	}
	332	case VIDIOCGUNIT:
	333	{
	334	struct video_unit *v = arg;
	335	v->video=VIDEO_NO_UNIT;
	336	v->vbi=VIDEO_NO_UNIT;
	337	v->radio=dev->minor;
	338	v->audio=0; /* How do we find out this??? */
	339	v->teletext=VIDEO_NO_UNIT;
	340	return 0;
	341	}
	342	default:
	343	return -ENOIOCTLCMD;
	344	}
	345	}
	346
	347	static int fmr2_ioctl(struct inode inode, struct file file,
4286c6f6	348	unsigned int cmd, unsigned long arg)
1da177e4 LT	349	{
	350	return video_usercopy(inode, file, cmd, arg, fmr2_do_ioctl);
	351	}
	352
	353	static struct fmr2_device fmr2_unit;
	354
	355	static struct file_operations fmr2_fops = {
	356	.owner = THIS_MODULE,
	357	.open = video_exclusive_open,
	358	.release = video_exclusive_release,
	359	.ioctl = fmr2_ioctl,
0d0fbf81	360	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	361	.llseek = no_llseek,
	362	};
	363
	364	static struct video_device fmr2_radio=
	365	{
	366	.owner = THIS_MODULE,
	367	.name = "SF16FMR2 radio",
	368	. type = VID_TYPE_TUNER,
	369	.hardware = VID_HARDWARE_SF16FMR2,
	370	.fops = &fmr2_fops,
	371	};
	372
	373	static int __init fmr2_init(void)
	374	{
	375	fmr2_unit.port = io;
	376	fmr2_unit.curvol = 0;
	377	fmr2_unit.mute = 0;
	378	fmr2_unit.curfreq = 0;
	379	fmr2_unit.stereo = 1;
	380	fmr2_unit.flags = VIDEO_TUNER_LOW;
	381	fmr2_unit.card_type = 0;
	382	fmr2_radio.priv = &fmr2_unit;
	383
3593cab5	384	mutex_init(&lock);
1da177e4 LT	385
	386	if (request_region(io, 2, "sf16fmr2"))
	387	{
	388	printk(KERN_ERR "fmr2: port 0x%x already in use\n", io);
	389	return -EBUSY;
	390	}
	391
	392	if(video_register_device(&fmr2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
	393	{
	394	release_region(io, 2);
	395	return -EINVAL;
	396	}
	397
	398	printk(KERN_INFO "SF16FMR2 radio card driver at 0x%x.\n", io);
	399	debug_print((KERN_DEBUG "Mute %d Low %d\n",VIDEO_AUDIO_MUTE,VIDEO_TUNER_LOW));
	400	/* mute card - prevents noisy bootups */
3593cab5	401	mutex_lock(&lock);
1da177e4 LT	402	fmr2_mute(io);
1da177e4 LT	403	fmr2_product_info(&fmr2_unit);
3593cab5	404	mutex_unlock(&lock);
1da177e4 LT	405	debug_print((KERN_DEBUG "card_type %d\n", fmr2_unit.card_type));
	406	return 0;
	407	}
	408
	409	MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
	410	MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
	411	MODULE_LICENSE("GPL");
	412
	413	module_param(io, int, 0);
	414	MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
	415	module_param(radio_nr, int, 0);
	416
	417	static void __exit fmr2_cleanup_module(void)
	418	{
	419	video_unregister_device(&fmr2_radio);
	420	release_region(io,2);
	421	}
	422
	423	module_init(fmr2_init);
	424	module_exit(fmr2_cleanup_module);
	425
	426	#ifndef MODULE
	427
	428	static int __init fmr2_setup_io(char *str)
	429	{
	430	get_option(&str, &io);
	431	return 1;
	432	}
	433
	434	__setup("sf16fmr2=", fmr2_setup_io);
	435
	436	#endif