[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 <media/v4l2-ioctl.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)

#define AUD_VOL_INDEX 1

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,
	},
	[AUD_VOL_INDEX] = {
		.id            = V4L2_CID_AUDIO_VOLUME,
		.name          = "Volume",
		.minimum       = 0,
		.maximum       = 15,
		.step          = 1,
		.default_value = 0,
		.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
{
	unsigned long in_use;
	int port;
	int curvol; /* 0-15 */
	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 vol[16] = { 0x021, 0x084, 0x090, 0x104,
			0x110, 0x204, 0x210, 0x402,
			0x404, 0x408, 0x410, 0x801,
			0x802, 0x804, 0x808, 0x810 };
	int i, a, port = dev->port;
	int n = vol[dev->curvol & 0x0f];

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

	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 fmr2_device *fmr2 = video_drvdata(file);

	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 fmr2_device *fmr2 = video_drvdata(file);

	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 fmr2_device *fmr2 = video_drvdata(file);

	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;

	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 fmr2_device *fmr2 = video_drvdata(file);

	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 fmr2_device *fmr2 = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		fmr2->mute = ctrl->value;
		break;
	case V4L2_CID_AUDIO_VOLUME:
		if (ctrl->value > radio_qctrl[AUD_VOL_INDEX].maximum)
			fmr2->curvol = radio_qctrl[AUD_VOL_INDEX].maximum;
		else
			fmr2->curvol = ctrl->value;

		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);
		/* Set frequency and unmute card */
		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 int fmr2_exclusive_open(struct file *file)
{
	return test_and_set_bit(0, &fmr2_unit.in_use) ? -EBUSY : 0;
}

static int fmr2_exclusive_release(struct file *file)
{
	clear_bit(0, &fmr2_unit.in_use);
	return 0;
}

static const struct v4l2_file_operations fmr2_fops = {
	.owner          = THIS_MODULE,
	.open           = fmr2_exclusive_open,
	.release        = fmr2_exclusive_release,
	.ioctl          = video_ioctl2,
};

static const struct v4l2_ioctl_ops fmr2_ioctl_ops = {
	.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 struct video_device fmr2_radio = {
	.name		= "SF16FMR2 radio",
	.fops		= &fmr2_fops,
	.ioctl_ops 	= &fmr2_ioctl_ops,
	.release	= video_device_release_empty,
};

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;
	video_set_drvdata(&fmr2_radio, &fmr2_unit);

	mutex_init(&lock);

	if (!request_region(io, 2, "sf16fmr2")) {
		printk(KERN_ERR "radio-sf16fmr2: request_region failed!\n");
		return -EBUSY;
	}

	if (video_register_device(&fmr2_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
		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));

	/* Only card_type == 11 implements volume */
	if (fmr2_unit.card_type != 11)
		radio_qctrl[AUD_VOL_INDEX].maximum = 1;

	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>
35ea11ff	25	#include <media/v4l2-ioctl.h>
3593cab5	26	#include <linux/mutex.h>
1da177e4	27
1ddf5bc5 MCC	28	static struct mutex lock;
	29
	30	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
acda0e71 MCC	31	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
acda0e71 MCC	32
b2cb200f MCC	33	#define AUD_VOL_INDEX 1
b2cb200f MCC	34
acda0e71 MCC	35	static struct v4l2_queryctrl radio_qctrl[] = {
	36	{
	37	.id = V4L2_CID_AUDIO_MUTE,
	38	.name = "Mute",
	39	.minimum = 0,
	40	.maximum = 1,
	41	.default_value = 1,
	42	.type = V4L2_CTRL_TYPE_BOOLEAN,
b2cb200f MCC	43	},
b2cb200f MCC	44	[AUD_VOL_INDEX] = {
acda0e71 MCC	45	.id = V4L2_CID_AUDIO_VOLUME,
	46	.name = "Volume",
	47	.minimum = 0,
b2cb200f MCC	48	.maximum = 15,
	49	.step = 1,
	50	.default_value = 0,
acda0e71 MCC	51	.type = V4L2_CTRL_TYPE_INTEGER,
	52	}
	53	};
	54
1da177e4 LT	55	#undef DEBUG
	56	//#define DEBUG 1
	57
	58	#ifdef DEBUG
	59	# define debug_print(s) printk s
	60	#else
	61	# define debug_print(s)
	62	#endif
	63
	64	/* this should be static vars for module size */
	65	struct fmr2_device
	66	{
3ca685aa	67	unsigned long in_use;
1da177e4	68	int port;
b2cb200f	69	int curvol; /* 0-15 */
1da177e4 LT	70	int mute;
	71	int stereo; /* card is producing stereo audio */
	72	unsigned long curfreq; /* freq in kHz */
	73	int card_type;
	74	__u32 flags;
	75	};
	76
	77	static int io = 0x384;
	78	static int radio_nr = -1;
	79
	80	/* hw precision is 12.5 kHz
a58a414f	81	* It is only useful to give freq in intervall of 200 (=0.0125Mhz),
1da177e4 LT	82	* other bits will be truncated
	83	*/
	84	#define RSF16_ENCODE(x) ((x)/200+856)
	85	#define RSF16_MINFREQ 87*16000
	86	#define RSF16_MAXFREQ 108*16000
	87
	88	static inline void wait(int n,int port)
	89	{
	90	for (;n;--n) inb(port);
	91	}
	92
	93	static void outbits(int bits, unsigned int data, int nWait, int port)
	94	{
	95	int bit;
	96	for(;--bits>=0;) {
	97	bit = (data>>bits) & 1;
	98	outb(bit,port);
	99	wait(nWait,port);
	100	outb(bit\|2,port);
	101	wait(nWait,port);
	102	outb(bit,port);
	103	wait(nWait,port);
	104	}
	105	}
	106
	107	static inline void fmr2_mute(int port)
	108	{
	109	outb(0x00, port);
	110	wait(4,port);
	111	}
	112
	113	static inline void fmr2_unmute(int port)
	114	{
	115	outb(0x04, port);
	116	wait(4,port);
	117	}
	118
	119	static inline int fmr2_stereo_mode(int port)
	120	{
	121	int n = inb(port);
	122	outb(6,port);
	123	inb(port);
	124	n = ((n>>3)&1)^1;
	125	debug_print((KERN_DEBUG "stereo: %d\n", n));
	126	return n;
	127	}
	128
	129	static int fmr2_product_info(struct fmr2_device *dev)
	130	{
	131	int n = inb(dev->port);
	132	n &= 0xC1;
	133	if (n == 0)
	134	{
	135	/* this should support volume set */
	136	dev->card_type = 12;
	137	return 0;
	138	}
	139	/* not volume (mine is 11) */
	140	dev->card_type = (n==128)?11:0;
	141	return n;
	142	}
	143
	144	static inline int fmr2_getsigstr(struct fmr2_device *dev)
	145	{
146	/* !!! work only if scanning freq */
147	int port = dev->port, res = 0xffff;
148	outb(5,port);
149	wait(4,port);
150	if (!(inb(port)&1)) res = 0;
151	debug_print((KERN_DEBUG "signal: %d\n", res));
152	return res;
153	}
154
155	/* set frequency and unmute card */
156	static int fmr2_setfreq(struct fmr2_device *dev)
157	{
158	int port = dev->port;
159	unsigned long freq = dev->curfreq;
160
161	fmr2_mute(port);
162
163	/* 0x42 for mono output
164	* 0x102 forward scanning
165	* 0x182 scansione avanti
166	*/
167	outbits(9,0x2,3,port);
168	outbits(16,RSF16_ENCODE(freq),2,port);
169
170	fmr2_unmute(port);
171
172	/* wait 0.11 sec */
173	msleep(110);
174
175	/* NOTE if mute this stop radio
176	you must set freq on unmute */
177	dev->stereo = fmr2_stereo_mode(port);
178	return 0;
179	}
180
181	/* !!! not tested, in my card this does't work !!! */
182	static int fmr2_setvolume(struct fmr2_device *dev)
183	{
b2cb200f MCC	184	int vol[16] = { 0x021, 0x084, 0x090, 0x104,
	185	0x110, 0x204, 0x210, 0x402,
	186	0x404, 0x408, 0x410, 0x801,
	187	0x802, 0x804, 0x808, 0x810 };
	188	int i, a, port = dev->port;
	189	int n = vol[dev->curvol & 0x0f];
1da177e4	190
b2cb200f MCC	191	if (dev->card_type != 11)
b2cb200f MCC	192	return 1;
1da177e4	193
b2cb200f	194	for (i = 12; --i >= 0; ) {
1da177e4	195	a = ((n >> i) & 1) << 6; /* if (a=0) a= 0; else a= 0x40; */
b2cb200f MCC	196	outb(a \| 4, port);
	197	wait(4, port);
	198	outb(a \| 0x24, port);
	199	wait(4, port);
	200	outb(a \| 4, port);
	201	wait(4, port);
1da177e4	202	}
b2cb200f	203	for (i = 6; --i >= 0; ) {
1da177e4	204	a = ((0x18 >> i) & 1) << 6;
b2cb200f	205	outb(a \| 4, port);
1da177e4	206	wait(4,port);
b2cb200f	207	outb(a \| 0x24, port);
1da177e4 LT	208	wait(4,port);
	209	outb(a\|4, port);
	210	wait(4,port);
	211	}
b2cb200f	212	wait(4, port);
1da177e4 LT	213	outb(0x14, port);
	214
	215	return 0;
	216	}
	217
34ab962d DL	218	static int vidioc_querycap(struct file file, void priv,
34ab962d DL	219	struct v4l2_capability *v)
1da177e4	220	{
34ab962d DL	221	strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
	222	strlcpy(v->card, "SF16-FMR2 radio", sizeof(v->card));
	223	sprintf(v->bus_info, "ISA");
	224	v->version = RADIO_VERSION;
	225	v->capabilities = V4L2_CAP_TUNER;
	226	return 0;
	227	}
	228
	229	static int vidioc_g_tuner(struct file file, void priv,
	230	struct v4l2_tuner *v)
	231	{
	232	int mult;
c170ecf4	233	struct fmr2_device *fmr2 = video_drvdata(file);
1da177e4	234
34ab962d DL	235	if (v->index > 0)
	236	return -EINVAL;
	237
	238	strcpy(v->name, "FM");
	239	v->type = V4L2_TUNER_RADIO;
	240
	241	mult = (fmr2->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
	242	v->rangelow = RSF16_MINFREQ/mult;
	243	v->rangehigh = RSF16_MAXFREQ/mult;
	244	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_MODE_STEREO;
	245	v->capability = fmr2->flags&V4L2_TUNER_CAP_LOW;
	246	v->audmode = fmr2->stereo ? V4L2_TUNER_MODE_STEREO:
	247	V4L2_TUNER_MODE_MONO;
	248	mutex_lock(&lock);
	249	v->signal = fmr2_getsigstr(fmr2);
	250	mutex_unlock(&lock);
	251	return 0;
	252	}
acda0e71	253
34ab962d DL	254	static int vidioc_s_tuner(struct file file, void priv,
	255	struct v4l2_tuner *v)
	256	{
	257	if (v->index > 0)
	258	return -EINVAL;
	259	return 0;
	260	}
acda0e71	261
34ab962d DL	262	static int vidioc_s_frequency(struct file file, void priv,
	263	struct v4l2_frequency *f)
	264	{
c170ecf4	265	struct fmr2_device *fmr2 = video_drvdata(file);
acda0e71	266
34ab962d DL	267	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
	268	f->frequency *= 1000;
	269	if (f->frequency < RSF16_MINFREQ \|\|
	270	f->frequency > RSF16_MAXFREQ )
	271	return -EINVAL;
	272	/*rounding in steps of 200 to match th freq
	273	that will be used */
	274	fmr2->curfreq = (f->frequency/200)*200;
	275
	276	/* set card freq (if not muted) */
	277	if (fmr2->curvol && !fmr2->mute) {
	278	mutex_lock(&lock);
	279	fmr2_setfreq(fmr2);
	280	mutex_unlock(&lock);
	281	}
	282	return 0;
	283	}
acda0e71	284
34ab962d DL	285	static int vidioc_g_frequency(struct file file, void priv,
	286	struct v4l2_frequency *f)
	287	{
c170ecf4	288	struct fmr2_device *fmr2 = video_drvdata(file);
acda0e71	289
34ab962d DL	290	f->type = V4L2_TUNER_RADIO;
	291	f->frequency = fmr2->curfreq;
	292	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
	293	f->frequency /= 1000;
	294	return 0;
	295	}
acda0e71	296
34ab962d DL	297	static int vidioc_queryctrl(struct file file, void priv,
	298	struct v4l2_queryctrl *qc)
	299	{
	300	int i;
acda0e71	301
34ab962d	302	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
34ab962d	303	if (qc->id && qc->id == radio_qctrl[i].id) {
b2cb200f	304	memcpy(qc, &radio_qctrl[i], sizeof(*qc));
1da177e4 LT	305	return 0;
1da177e4 LT	306	}
34ab962d DL	307	}
	308	return -EINVAL;
	309	}
	310
	311	static int vidioc_g_ctrl(struct file file, void priv,
	312	struct v4l2_control *ctrl)
	313	{
c170ecf4	314	struct fmr2_device *fmr2 = video_drvdata(file);
34ab962d DL	315
	316	switch (ctrl->id) {
	317	case V4L2_CID_AUDIO_MUTE:
	318	ctrl->value = fmr2->mute;
	319	return 0;
	320	case V4L2_CID_AUDIO_VOLUME:
	321	ctrl->value = fmr2->curvol;
	322	return 0;
	323	}
	324	return -EINVAL;
	325	}
	326
	327	static int vidioc_s_ctrl(struct file file, void priv,
	328	struct v4l2_control *ctrl)
	329	{
c170ecf4	330	struct fmr2_device *fmr2 = video_drvdata(file);
34ab962d DL	331
	332	switch (ctrl->id) {
	333	case V4L2_CID_AUDIO_MUTE:
	334	fmr2->mute = ctrl->value;
34ab962d DL	335	break;
34ab962d DL	336	case V4L2_CID_AUDIO_VOLUME:
b2cb200f MCC	337	if (ctrl->value > radio_qctrl[AUD_VOL_INDEX].maximum)
	338	fmr2->curvol = radio_qctrl[AUD_VOL_INDEX].maximum;
	339	else
	340	fmr2->curvol = ctrl->value;
	341
34ab962d DL	342	break;
	343	default:
	344	return -EINVAL;
	345	}
	346
1da177e4	347	#ifdef DEBUG
34ab962d DL	348	if (fmr2->curvol && !fmr2->mute)
	349	printk(KERN_DEBUG "unmute\n");
	350	else
	351	printk(KERN_DEBUG "mute\n");
1da177e4	352	#endif
acda0e71	353
34ab962d DL	354	mutex_lock(&lock);
	355	if (fmr2->curvol && !fmr2->mute) {
	356	fmr2_setvolume(fmr2);
b2cb200f	357	/* Set frequency and unmute card */
34ab962d DL	358	fmr2_setfreq(fmr2);
	359	} else
	360	fmr2_mute(fmr2->port);
	361	mutex_unlock(&lock);
	362	return 0;
	363	}
	364
	365	static int vidioc_g_audio(struct file file, void priv,
	366	struct v4l2_audio *a)
	367	{
	368	if (a->index > 1)
	369	return -EINVAL;
	370
	371	strcpy(a->name, "Radio");
	372	a->capability = V4L2_AUDCAP_STEREO;
	373	return 0;
	374	}
	375
	376	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	377	{
	378	*i = 0;
	379	return 0;
1da177e4 LT	380	}
1da177e4 LT	381
34ab962d DL	382	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	383	{
	384	if (i != 0)
	385	return -EINVAL;
	386	return 0;
	387	}
	388
	389	static int vidioc_s_audio(struct file file, void priv,
	390	struct v4l2_audio *a)
	391	{
	392	if (a->index != 0)
	393	return -EINVAL;
	394	return 0;
1da177e4 LT	395	}
	396
	397	static struct fmr2_device fmr2_unit;
	398
bec43661	399	static int fmr2_exclusive_open(struct file *file)
3ca685aa HV	400	{
	401	return test_and_set_bit(0, &fmr2_unit.in_use) ? -EBUSY : 0;
	402	}
	403
bec43661	404	static int fmr2_exclusive_release(struct file *file)
3ca685aa HV	405	{
	406	clear_bit(0, &fmr2_unit.in_use);
	407	return 0;
	408	}
	409
bec43661	410	static const struct v4l2_file_operations fmr2_fops = {
1da177e4	411	.owner = THIS_MODULE,
3ca685aa HV	412	.open = fmr2_exclusive_open,
3ca685aa HV	413	.release = fmr2_exclusive_release,
34ab962d	414	.ioctl = video_ioctl2,
1da177e4 LT	415	};
1da177e4 LT	416
a399810c	417	static const struct v4l2_ioctl_ops fmr2_ioctl_ops = {
34ab962d DL	418	.vidioc_querycap = vidioc_querycap,
	419	.vidioc_g_tuner = vidioc_g_tuner,
	420	.vidioc_s_tuner = vidioc_s_tuner,
	421	.vidioc_g_audio = vidioc_g_audio,
	422	.vidioc_s_audio = vidioc_s_audio,
	423	.vidioc_g_input = vidioc_g_input,
	424	.vidioc_s_input = vidioc_s_input,
	425	.vidioc_g_frequency = vidioc_g_frequency,
	426	.vidioc_s_frequency = vidioc_s_frequency,
	427	.vidioc_queryctrl = vidioc_queryctrl,
	428	.vidioc_g_ctrl = vidioc_g_ctrl,
	429	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	430	};
1da177e4 LT	431
a399810c	432	static struct video_device fmr2_radio = {
a399810c	433	.name = "SF16FMR2 radio",
a399810c HV	434	.fops = &fmr2_fops,
a399810c HV	435	.ioctl_ops = &fmr2_ioctl_ops,
aa5e90af	436	.release = video_device_release_empty,
a399810c HV	437	};
a399810c HV	438
1da177e4 LT	439	static int __init fmr2_init(void)
	440	{
	441	fmr2_unit.port = io;
	442	fmr2_unit.curvol = 0;
	443	fmr2_unit.mute = 0;
	444	fmr2_unit.curfreq = 0;
	445	fmr2_unit.stereo = 1;
acda0e71	446	fmr2_unit.flags = V4L2_TUNER_CAP_LOW;
1da177e4	447	fmr2_unit.card_type = 0;
601e9444	448	video_set_drvdata(&fmr2_radio, &fmr2_unit);
1da177e4	449
3593cab5	450	mutex_init(&lock);
1da177e4	451
dd49f30c DSL	452	if (!request_region(io, 2, "sf16fmr2")) {
dd49f30c DSL	453	printk(KERN_ERR "radio-sf16fmr2: request_region failed!\n");
1da177e4 LT	454	return -EBUSY;
	455	}
	456
98512f7b	457	if (video_register_device(&fmr2_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
1da177e4 LT	458	release_region(io, 2);
	459	return -EINVAL;
	460	}
	461
	462	printk(KERN_INFO "SF16FMR2 radio card driver at 0x%x.\n", io);
1da177e4	463	/* mute card - prevents noisy bootups */
3593cab5	464	mutex_lock(&lock);
1da177e4 LT	465	fmr2_mute(io);
1da177e4 LT	466	fmr2_product_info(&fmr2_unit);
3593cab5	467	mutex_unlock(&lock);
1da177e4	468	debug_print((KERN_DEBUG "card_type %d\n", fmr2_unit.card_type));
b2cb200f MCC	469
	470	/* Only card_type == 11 implements volume */
	471	if (fmr2_unit.card_type != 11)
	472	radio_qctrl[AUD_VOL_INDEX].maximum = 1;
	473
1da177e4 LT	474	return 0;
	475	}
	476
	477	MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
	478	MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
	479	MODULE_LICENSE("GPL");
	480
	481	module_param(io, int, 0);
	482	MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
	483	module_param(radio_nr, int, 0);
	484
	485	static void __exit fmr2_cleanup_module(void)
	486	{
	487	video_unregister_device(&fmr2_radio);
	488	release_region(io,2);
	489	}
	490
	491	module_init(fmr2_init);
	492	module_exit(fmr2_cleanup_module);
	493
	494	#ifndef MODULE
	495
	496	static int __init fmr2_setup_io(char *str)
	497	{
	498	get_option(&str, &io);
	499	return 1;
	500	}
	501
	502	__setup("sf16fmr2=", fmr2_setup_io);
	503
	504	#endif