[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)
 *
 *  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/mutex.h>

static struct mutex lock;

#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       = 65535,
		.step          = 1<<12,
		.default_value = 0xff,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}
};

#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 vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
	strlcpy(v->card, "SF16-FMR2 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)
{
	int mult;
	struct video_device *dev = video_devdata(file);
	struct fmr2_device *fmr2 = dev->priv;

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

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

	mult = (fmr2->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
	v->rangelow = RSF16_MINFREQ/mult;
	v->rangehigh = RSF16_MAXFREQ/mult;
	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_MODE_STEREO;
	v->capability = fmr2->flags&V4L2_TUNER_CAP_LOW;
	v->audmode = fmr2->stereo ? V4L2_TUNER_MODE_STEREO:
				V4L2_TUNER_MODE_MONO;
	mutex_lock(&lock);
	v->signal = fmr2_getsigstr(fmr2);
	mutex_unlock(&lock);
	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 fmr2_device *fmr2 = dev->priv;

	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
		f->frequency *= 1000;
	if (f->frequency < RSF16_MINFREQ ||
			f->frequency > RSF16_MAXFREQ )
		return -EINVAL;
	/*rounding in steps of 200 to match th freq
	that will be used */
	fmr2->curfreq = (f->frequency/200)*200;

	/* set card freq (if not muted) */
	if (fmr2->curvol && !fmr2->mute) {
		mutex_lock(&lock);
		fmr2_setfreq(fmr2);
		mutex_unlock(&lock);
	}
	return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct video_device *dev = video_devdata(file);
	struct fmr2_device *fmr2 = dev->priv;

	f->type = V4L2_TUNER_RADIO;
	f->frequency = fmr2->curfreq;
	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
		f->frequency /= 1000;
	return 0;
}

static int vidioc_queryctrl(struct file *file, void *priv,
					struct v4l2_queryctrl *qc)
{
	int i;
	struct video_device *dev = video_devdata(file);
	struct fmr2_device *fmr2 = dev->priv;

	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
		if ((fmr2->card_type != 11)
				&& V4L2_CID_AUDIO_VOLUME)
			radio_qctrl[i].step = 65535;
		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 fmr2_device *fmr2 = dev->priv;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		ctrl->value = fmr2->mute;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		ctrl->value = fmr2->curvol;
		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 fmr2_device *fmr2 = dev->priv;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		fmr2->mute = ctrl->value;
		if (fmr2->card_type != 11) {
			if (!fmr2->mute)
				fmr2->curvol = 65535;
			else
				fmr2->curvol = 0;
		}
		break;
	case V4L2_CID_AUDIO_VOLUME:
		fmr2->curvol = ctrl->value;
		if (fmr2->card_type != 11) {
			if (fmr2->curvol) {
				fmr2->curvol = 65535;
				fmr2->mute = 0;
			} else {
				fmr2->curvol = 0;
				fmr2->mute = 1;
			}
		}
		break;
	default:
		return -EINVAL;
	}

#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;
}

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 fmr2_device fmr2_unit;

static const struct file_operations fmr2_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 fmr2_radio=
{
	.owner		= THIS_MODULE,
	.name		= "SF16FMR2 radio",
	. type		= VID_TYPE_TUNER,
	.fops		= &fmr2_fops,
	.vidioc_querycap    = vidioc_querycap,
	.vidioc_g_tuner     = vidioc_g_tuner,
	.vidioc_s_tuner     = vidioc_s_tuner,
	.vidioc_g_audio     = vidioc_g_audio,
	.vidioc_s_audio     = vidioc_s_audio,
	.vidioc_g_input     = vidioc_g_input,
	.vidioc_s_input     = vidioc_s_input,
	.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,
};

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 = V4L2_TUNER_CAP_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);
	/* 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)
acda0e71 MCC	13	*
acda0e71 MCC	14	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	15	*/
	16
	17	#include <linux/module.h> /* Modules */
	18	#include <linux/init.h> /* Initdata */
fb911ee8	19	#include <linux/ioport.h> /* request_region */
1da177e4 LT	20	#include <linux/delay.h> /* udelay */
	21	#include <asm/io.h> /* outb, outb_p */
	22	#include <asm/uaccess.h> /* copy to/from user */
acda0e71	23	#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3	24	#include <media/v4l2-common.h>
3593cab5	25	#include <linux/mutex.h>
1da177e4	26
1ddf5bc5 MCC	27	static struct mutex lock;
	28
	29	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
acda0e71 MCC	30	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	31
	32	static struct v4l2_queryctrl radio_qctrl[] = {
	33	{
	34	.id = V4L2_CID_AUDIO_MUTE,
	35	.name = "Mute",
	36	.minimum = 0,
	37	.maximum = 1,
	38	.default_value = 1,
	39	.type = V4L2_CTRL_TYPE_BOOLEAN,
	40	},{
	41	.id = V4L2_CID_AUDIO_VOLUME,
	42	.name = "Volume",
	43	.minimum = 0,
	44	.maximum = 65535,
	45	.step = 1<<12,
	46	.default_value = 0xff,
	47	.type = V4L2_CTRL_TYPE_INTEGER,
	48	}
	49	};
	50
1da177e4 LT	51	#undef DEBUG
	52	//#define DEBUG 1
	53
	54	#ifdef DEBUG
	55	# define debug_print(s) printk s
	56	#else
	57	# define debug_print(s)
	58	#endif
	59
	60	/* this should be static vars for module size */
	61	struct fmr2_device
	62	{
	63	int port;
	64	int curvol; /* 0-65535, if not volume 0 or 65535 */
	65	int mute;
	66	int stereo; /* card is producing stereo audio */
	67	unsigned long curfreq; /* freq in kHz */
	68	int card_type;
	69	__u32 flags;
	70	};
	71
	72	static int io = 0x384;
	73	static int radio_nr = -1;
	74
	75	/* hw precision is 12.5 kHz
a58a414f	76	* It is only useful to give freq in intervall of 200 (=0.0125Mhz),
1da177e4 LT	77	* other bits will be truncated
	78	*/
	79	#define RSF16_ENCODE(x) ((x)/200+856)
	80	#define RSF16_MINFREQ 87*16000
	81	#define RSF16_MAXFREQ 108*16000
	82
	83	static inline void wait(int n,int port)
	84	{
	85	for (;n;--n) inb(port);
	86	}
	87
	88	static void outbits(int bits, unsigned int data, int nWait, int port)
	89	{
	90	int bit;
	91	for(;--bits>=0;) {
	92	bit = (data>>bits) & 1;
	93	outb(bit,port);
	94	wait(nWait,port);
	95	outb(bit\|2,port);
	96	wait(nWait,port);
	97	outb(bit,port);
	98	wait(nWait,port);
	99	}
	100	}
	101
	102	static inline void fmr2_mute(int port)
	103	{
	104	outb(0x00, port);
	105	wait(4,port);
	106	}
	107
	108	static inline void fmr2_unmute(int port)
	109	{
	110	outb(0x04, port);
	111	wait(4,port);
	112	}
	113
	114	static inline int fmr2_stereo_mode(int port)
	115	{
	116	int n = inb(port);
	117	outb(6,port);
	118	inb(port);
	119	n = ((n>>3)&1)^1;
	120	debug_print((KERN_DEBUG "stereo: %d\n", n));
	121	return n;
	122	}
	123
	124	static int fmr2_product_info(struct fmr2_device *dev)
	125	{
	126	int n = inb(dev->port);
	127	n &= 0xC1;
	128	if (n == 0)
	129	{
	130	/* this should support volume set */
	131	dev->card_type = 12;
	132	return 0;
	133	}
	134	/* not volume (mine is 11) */
	135	dev->card_type = (n==128)?11:0;
	136	return n;
	137	}
	138
	139	static inline int fmr2_getsigstr(struct fmr2_device *dev)
	140	{
141	/* !!! work only if scanning freq */
142	int port = dev->port, res = 0xffff;
143	outb(5,port);
144	wait(4,port);
145	if (!(inb(port)&1)) res = 0;
146	debug_print((KERN_DEBUG "signal: %d\n", res));
147	return res;
148	}
149
150	/* set frequency and unmute card */
151	static int fmr2_setfreq(struct fmr2_device *dev)
152	{
153	int port = dev->port;
154	unsigned long freq = dev->curfreq;
155
156	fmr2_mute(port);
157
158	/* 0x42 for mono output
159	* 0x102 forward scanning
160	* 0x182 scansione avanti
161	*/
162	outbits(9,0x2,3,port);
163	outbits(16,RSF16_ENCODE(freq),2,port);
164
165	fmr2_unmute(port);
166
167	/* wait 0.11 sec */
168	msleep(110);
169
170	/* NOTE if mute this stop radio
171	you must set freq on unmute */
172	dev->stereo = fmr2_stereo_mode(port);
173	return 0;
174	}
175
176	/* !!! not tested, in my card this does't work !!! */
177	static int fmr2_setvolume(struct fmr2_device *dev)
178	{
179	int i,a,n, port = dev->port;
180
181	if (dev->card_type != 11) return 1;
182
183	switch( (dev->curvol+(1<<11)) >> 12 )
184	{
185	case 0: case 1: n = 0x21; break;
186	case 2: n = 0x84; break;
187	case 3: n = 0x90; break;
188	case 4: n = 0x104; break;
189	case 5: n = 0x110; break;
190	case 6: n = 0x204; break;
191	case 7: n = 0x210; break;
192	case 8: n = 0x402; break;
193	case 9: n = 0x404; break;
194	default:
195	case 10: n = 0x408; break;
196	case 11: n = 0x410; break;
197	case 12: n = 0x801; break;
198	case 13: n = 0x802; break;
199	case 14: n = 0x804; break;
200	case 15: n = 0x808; break;
201	case 16: n = 0x810; break;
202	}
203	for(i=12;--i>=0;)
204	{
205	a = ((n >> i) & 1) << 6; /* if (a=0) a= 0; else a= 0x40; */
206	outb(a\|4, port);
207	wait(4,port);
208	outb(a\|0x24, port);
209	wait(4,port);
210	outb(a\|4, port);
211	wait(4,port);
212	}
213	for(i=6;--i>=0;)
214	{
215	a = ((0x18 >> i) & 1) << 6;
216	outb(a\|4, port);
217	wait(4,port);
218	outb(a\|0x24, port);
219	wait(4,port);
220	outb(a\|4, port);
221	wait(4,port);
222	}
223	wait(4,port);
224	outb(0x14, port);
225
226	return 0;
227	}
228
34ab962d DL	229	static int vidioc_querycap(struct file file, void priv,
34ab962d DL	230	struct v4l2_capability *v)
1da177e4	231	{
34ab962d DL	232	strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
	233	strlcpy(v->card, "SF16-FMR2 radio", sizeof(v->card));
	234	sprintf(v->bus_info, "ISA");
	235	v->version = RADIO_VERSION;
	236	v->capabilities = V4L2_CAP_TUNER;
	237	return 0;
	238	}
	239
	240	static int vidioc_g_tuner(struct file file, void priv,
	241	struct v4l2_tuner *v)
	242	{
	243	int mult;
1da177e4 LT	244	struct video_device *dev = video_devdata(file);
1da177e4 LT	245	struct fmr2_device *fmr2 = dev->priv;
1da177e4	246
34ab962d DL	247	if (v->index > 0)
	248	return -EINVAL;
	249
	250	strcpy(v->name, "FM");
	251	v->type = V4L2_TUNER_RADIO;
	252
	253	mult = (fmr2->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
	254	v->rangelow = RSF16_MINFREQ/mult;
	255	v->rangehigh = RSF16_MAXFREQ/mult;
	256	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_MODE_STEREO;
	257	v->capability = fmr2->flags&V4L2_TUNER_CAP_LOW;
	258	v->audmode = fmr2->stereo ? V4L2_TUNER_MODE_STEREO:
	259	V4L2_TUNER_MODE_MONO;
	260	mutex_lock(&lock);
	261	v->signal = fmr2_getsigstr(fmr2);
	262	mutex_unlock(&lock);
	263	return 0;
	264	}
acda0e71	265
34ab962d DL	266	static int vidioc_s_tuner(struct file file, void priv,
	267	struct v4l2_tuner *v)
	268	{
	269	if (v->index > 0)
	270	return -EINVAL;
	271	return 0;
	272	}
acda0e71	273
34ab962d DL	274	static int vidioc_s_frequency(struct file file, void priv,
	275	struct v4l2_frequency *f)
	276	{
	277	struct video_device *dev = video_devdata(file);
	278	struct fmr2_device *fmr2 = dev->priv;
acda0e71	279
34ab962d DL	280	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
	281	f->frequency *= 1000;
	282	if (f->frequency < RSF16_MINFREQ \|\|
	283	f->frequency > RSF16_MAXFREQ )
	284	return -EINVAL;
	285	/*rounding in steps of 200 to match th freq
	286	that will be used */
	287	fmr2->curfreq = (f->frequency/200)*200;
	288
	289	/* set card freq (if not muted) */
	290	if (fmr2->curvol && !fmr2->mute) {
	291	mutex_lock(&lock);
	292	fmr2_setfreq(fmr2);
	293	mutex_unlock(&lock);
	294	}
	295	return 0;
	296	}
acda0e71	297
34ab962d DL	298	static int vidioc_g_frequency(struct file file, void priv,
	299	struct v4l2_frequency *f)
	300	{
	301	struct video_device *dev = video_devdata(file);
	302	struct fmr2_device *fmr2 = dev->priv;
acda0e71	303
34ab962d DL	304	f->type = V4L2_TUNER_RADIO;
	305	f->frequency = fmr2->curfreq;
	306	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
	307	f->frequency /= 1000;
	308	return 0;
	309	}
acda0e71	310
34ab962d DL	311	static int vidioc_queryctrl(struct file file, void priv,
	312	struct v4l2_queryctrl *qc)
	313	{
	314	int i;
	315	struct video_device *dev = video_devdata(file);
	316	struct fmr2_device *fmr2 = dev->priv;
acda0e71	317
34ab962d DL	318	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	319	if ((fmr2->card_type != 11)
	320	&& V4L2_CID_AUDIO_VOLUME)
	321	radio_qctrl[i].step = 65535;
	322	if (qc->id && qc->id == radio_qctrl[i].id) {
	323	memcpy(qc, &(radio_qctrl[i]),
	324	sizeof(*qc));
1da177e4 LT	325	return 0;
1da177e4 LT	326	}
34ab962d DL	327	}
	328	return -EINVAL;
	329	}
	330
	331	static int vidioc_g_ctrl(struct file file, void priv,
	332	struct v4l2_control *ctrl)
	333	{
	334	struct video_device *dev = video_devdata(file);
	335	struct fmr2_device *fmr2 = dev->priv;
	336
	337	switch (ctrl->id) {
	338	case V4L2_CID_AUDIO_MUTE:
	339	ctrl->value = fmr2->mute;
	340	return 0;
	341	case V4L2_CID_AUDIO_VOLUME:
	342	ctrl->value = fmr2->curvol;
	343	return 0;
	344	}
	345	return -EINVAL;
	346	}
	347
	348	static int vidioc_s_ctrl(struct file file, void priv,
	349	struct v4l2_control *ctrl)
	350	{
	351	struct video_device *dev = video_devdata(file);
	352	struct fmr2_device *fmr2 = dev->priv;
	353
	354	switch (ctrl->id) {
	355	case V4L2_CID_AUDIO_MUTE:
	356	fmr2->mute = ctrl->value;
	357	if (fmr2->card_type != 11) {
	358	if (!fmr2->mute)
	359	fmr2->curvol = 65535;
	360	else
	361	fmr2->curvol = 0;
acda0e71	362	}
34ab962d DL	363	break;
	364	case V4L2_CID_AUDIO_VOLUME:
	365	fmr2->curvol = ctrl->value;
	366	if (fmr2->card_type != 11) {
	367	if (fmr2->curvol) {
	368	fmr2->curvol = 65535;
	369	fmr2->mute = 0;
	370	} else {
	371	fmr2->curvol = 0;
	372	fmr2->mute = 1;
acda0e71	373	}
acda0e71	374	}
34ab962d DL	375	break;
	376	default:
	377	return -EINVAL;
	378	}
	379
1da177e4	380	#ifdef DEBUG
34ab962d DL	381	if (fmr2->curvol && !fmr2->mute)
	382	printk(KERN_DEBUG "unmute\n");
	383	else
	384	printk(KERN_DEBUG "mute\n");
1da177e4	385	#endif
acda0e71	386
34ab962d DL	387	mutex_lock(&lock);
	388	if (fmr2->curvol && !fmr2->mute) {
	389	fmr2_setvolume(fmr2);
	390	fmr2_setfreq(fmr2);
	391	} else
	392	fmr2_mute(fmr2->port);
	393	mutex_unlock(&lock);
	394	return 0;
	395	}
	396
	397	static int vidioc_g_audio(struct file file, void priv,
	398	struct v4l2_audio *a)
	399	{
	400	if (a->index > 1)
	401	return -EINVAL;
	402
	403	strcpy(a->name, "Radio");
	404	a->capability = V4L2_AUDCAP_STEREO;
	405	return 0;
	406	}
	407
	408	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	409	{
	410	*i = 0;
	411	return 0;
1da177e4 LT	412	}
1da177e4 LT	413
34ab962d DL	414	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	415	{
	416	if (i != 0)
	417	return -EINVAL;
	418	return 0;
	419	}
	420
	421	static int vidioc_s_audio(struct file file, void priv,
	422	struct v4l2_audio *a)
	423	{
	424	if (a->index != 0)
	425	return -EINVAL;
	426	return 0;
1da177e4 LT	427	}
	428
	429	static struct fmr2_device fmr2_unit;
	430
fa027c2a	431	static const struct file_operations fmr2_fops = {
1da177e4 LT	432	.owner = THIS_MODULE,
	433	.open = video_exclusive_open,
	434	.release = video_exclusive_release,
34ab962d	435	.ioctl = video_ioctl2,
0d0fbf81	436	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	437	.llseek = no_llseek,
	438	};
	439
	440	static struct video_device fmr2_radio=
	441	{
	442	.owner = THIS_MODULE,
	443	.name = "SF16FMR2 radio",
	444	. type = VID_TYPE_TUNER,
1da177e4	445	.fops = &fmr2_fops,
34ab962d DL	446	.vidioc_querycap = vidioc_querycap,
	447	.vidioc_g_tuner = vidioc_g_tuner,
	448	.vidioc_s_tuner = vidioc_s_tuner,
	449	.vidioc_g_audio = vidioc_g_audio,
	450	.vidioc_s_audio = vidioc_s_audio,
	451	.vidioc_g_input = vidioc_g_input,
	452	.vidioc_s_input = vidioc_s_input,
	453	.vidioc_g_frequency = vidioc_g_frequency,
	454	.vidioc_s_frequency = vidioc_s_frequency,
	455	.vidioc_queryctrl = vidioc_queryctrl,
	456	.vidioc_g_ctrl = vidioc_g_ctrl,
	457	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	458	};
	459
	460	static int __init fmr2_init(void)
	461	{
	462	fmr2_unit.port = io;
	463	fmr2_unit.curvol = 0;
	464	fmr2_unit.mute = 0;
	465	fmr2_unit.curfreq = 0;
	466	fmr2_unit.stereo = 1;
acda0e71	467	fmr2_unit.flags = V4L2_TUNER_CAP_LOW;
1da177e4 LT	468	fmr2_unit.card_type = 0;
	469	fmr2_radio.priv = &fmr2_unit;
	470
3593cab5	471	mutex_init(&lock);
1da177e4 LT	472
	473	if (request_region(io, 2, "sf16fmr2"))
	474	{
	475	printk(KERN_ERR "fmr2: port 0x%x already in use\n", io);
	476	return -EBUSY;
	477	}
	478
	479	if(video_register_device(&fmr2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
	480	{
	481	release_region(io, 2);
	482	return -EINVAL;
	483	}
	484
	485	printk(KERN_INFO "SF16FMR2 radio card driver at 0x%x.\n", io);
1da177e4	486	/* mute card - prevents noisy bootups */
3593cab5	487	mutex_lock(&lock);
1da177e4 LT	488	fmr2_mute(io);
1da177e4 LT	489	fmr2_product_info(&fmr2_unit);
3593cab5	490	mutex_unlock(&lock);
1da177e4 LT	491	debug_print((KERN_DEBUG "card_type %d\n", fmr2_unit.card_type));
	492	return 0;
	493	}
	494
	495	MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
	496	MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
	497	MODULE_LICENSE("GPL");
	498
	499	module_param(io, int, 0);
	500	MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
	501	module_param(radio_nr, int, 0);
	502
	503	static void __exit fmr2_cleanup_module(void)
	504	{
	505	video_unregister_device(&fmr2_radio);
	506	release_region(io,2);
	507	}
	508
	509	module_init(fmr2_init);
	510	module_exit(fmr2_cleanup_module);
	511
	512	#ifndef MODULE
	513
	514	static int __init fmr2_setup_io(char *str)
	515	{
	516	get_option(&str, &io);
	517	return 1;
	518	}
	519
	520	__setup("sf16fmr2=", fmr2_setup_io);
	521
	522	#endif