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

/* zoltrix radio plus driver for Linux radio support
 * (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
 *
 * BUGS
 *  Due to the inconsistency in reading from the signal flags
 *  it is difficult to get an accurate tuned signal.
 *
 *  It seems that the card is not linear to 0 volume. It cuts off
 *  at a low volume, and it is not possible (at least I have not found)
 *  to get fine volume control over the low volume range.
 *
 *  Some code derived from code by Romolo Manfredini
 *				   romolo@bicnet.it
 *
 * 1999-05-06 - (C. van Schaik)
 *	      - Make signal strength and stereo scans
 *		kinder to cpu while in delay
 * 1999-01-05 - (C. van Schaik)
 *	      - Changed tuning to 1/160Mhz accuracy
 *	      - Added stereo support
 *		(card defaults to stereo)
 *		(can explicitly force mono on the card)
 *		(can detect if station is in stereo)
 *	      - Added unmute function
 *	      - Reworked ioctl functions
 * 2002-07-15 - Fix Stereo typo
 *
 * 2006-07-24 - 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, msleep                 */
#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/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          = 4096,
		.default_value = 0xff,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}
};

#ifndef CONFIG_RADIO_ZOLTRIX_PORT
#define CONFIG_RADIO_ZOLTRIX_PORT -1
#endif

static int io = CONFIG_RADIO_ZOLTRIX_PORT;
static int radio_nr = -1;

struct zol_device {
	unsigned long in_use;
	int port;
	int curvol;
	unsigned long curfreq;
	int muted;
	unsigned int stereo;
	struct mutex lock;
};

static int zol_setvol(struct zol_device *dev, int vol)
{
	dev->curvol = vol;
	if (dev->muted)
		return 0;

	mutex_lock(&dev->lock);
	if (vol == 0) {
		outb(0, io);
		outb(0, io);
		inb(io + 3);    /* Zoltrix needs to be read to confirm */
		mutex_unlock(&dev->lock);
		return 0;
	}

	outb(dev->curvol-1, io);
	msleep(10);
	inb(io + 2);
	mutex_unlock(&dev->lock);
	return 0;
}

static void zol_mute(struct zol_device *dev)
{
	dev->muted = 1;
	mutex_lock(&dev->lock);
	outb(0, io);
	outb(0, io);
	inb(io + 3);            /* Zoltrix needs to be read to confirm */
	mutex_unlock(&dev->lock);
}

static void zol_unmute(struct zol_device *dev)
{
	dev->muted = 0;
	zol_setvol(dev, dev->curvol);
}

static int zol_setfreq(struct zol_device *dev, unsigned long freq)
{
	/* tunes the radio to the desired frequency */
	unsigned long long bitmask, f, m;
	unsigned int stereo = dev->stereo;
	int i;

	if (freq == 0)
		return 1;
	m = (freq / 160 - 8800) * 2;
	f = (unsigned long long) m + 0x4d1c;

	bitmask = 0xc480402c10080000ull;
	i = 45;

	mutex_lock(&dev->lock);

	outb(0, io);
	outb(0, io);
	inb(io + 3);            /* Zoltrix needs to be read to confirm */

	outb(0x40, io);
	outb(0xc0, io);

	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31));
	while (i--) {
		if ((bitmask & 0x8000000000000000ull) != 0) {
			outb(0x80, io);
			udelay(50);
			outb(0x00, io);
			udelay(50);
			outb(0x80, io);
			udelay(50);
		} else {
			outb(0xc0, io);
			udelay(50);
			outb(0x40, io);
			udelay(50);
			outb(0xc0, io);
			udelay(50);
		}
		bitmask *= 2;
	}
	/* termination sequence */
	outb(0x80, io);
	outb(0xc0, io);
	outb(0x40, io);
	udelay(1000);
	inb(io+2);

	udelay(1000);

	if (dev->muted)
	{
		outb(0, io);
		outb(0, io);
		inb(io + 3);
		udelay(1000);
	}

	mutex_unlock(&dev->lock);

	if(!dev->muted)
	{
		zol_setvol(dev, dev->curvol);
	}
	return 0;
}

/* Get signal strength */

static int zol_getsigstr(struct zol_device *dev)
{
	int a, b;

	mutex_lock(&dev->lock);
	outb(0x00, io);         /* This stuff I found to do nothing */
	outb(dev->curvol, io);
	msleep(20);

	a = inb(io);
	msleep(10);
	b = inb(io);

	mutex_unlock(&dev->lock);

	if (a != b)
		return (0);

	if ((a == 0xcf) || (a == 0xdf)  /* I found this out by playing */
		|| (a == 0xef))       /* with a binary scanner on the card io */
		return (1);
	return (0);
}

static int zol_is_stereo (struct zol_device *dev)
{
	int x1, x2;

	mutex_lock(&dev->lock);

	outb(0x00, io);
	outb(dev->curvol, io);
	msleep(20);

	x1 = inb(io);
	msleep(10);
	x2 = inb(io);

	mutex_unlock(&dev->lock);

	if ((x1 == x2) && (x1 == 0xcf))
		return 1;
	return 0;
}

static int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-zoltrix", sizeof(v->driver));
	strlcpy(v->card, "Zoltrix 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)
{
	struct video_device *dev = video_devdata(file);
	struct zol_device *zol = dev->priv;

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

	strcpy(v->name, "FM");
	v->type = V4L2_TUNER_RADIO;
	v->rangelow = (88*16000);
	v->rangehigh = (108*16000);
	v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
	v->capability = V4L2_TUNER_CAP_LOW;
	if (zol_is_stereo(zol))
		v->audmode = V4L2_TUNER_MODE_STEREO;
	else
		v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = 0xFFFF*zol_getsigstr(zol);
	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 zol_device *zol = dev->priv;

	zol->curfreq = f->frequency;
	zol_setfreq(zol, zol->curfreq);
	return 0;
}

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

	f->type = V4L2_TUNER_RADIO;
	f->frequency = zol->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 video_device *dev = video_devdata(file);
	struct zol_device *zol = dev->priv;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		ctrl->value = zol->muted;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		ctrl->value = zol->curvol * 4096;
		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 zol_device *zol = dev->priv;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->value)
			zol_mute(zol);
		else {
			zol_unmute(zol);
			zol_setvol(zol,zol->curvol);
		}
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		zol_setvol(zol,ctrl->value/4096);
		return 0;
	}
	zol->stereo = 1;
	zol_setfreq(zol, zol->curfreq);
#if 0
/* FIXME: Implement stereo/mono switch on V4L2 */
			if (v->mode & VIDEO_SOUND_STEREO) {
				zol->stereo = 1;
				zol_setfreq(zol, zol->curfreq);
			}
			if (v->mode & VIDEO_SOUND_MONO) {
				zol->stereo = 0;
				zol_setfreq(zol, zol->curfreq);
			}
#endif
	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 zol_device zoltrix_unit;

static int zoltrix_exclusive_open(struct inode *inode, struct file *file)
{
	return test_and_set_bit(0, &zoltrix_unit.in_use) ? -EBUSY : 0;
}

static int zoltrix_exclusive_release(struct inode *inode, struct file *file)
{
	clear_bit(0, &zoltrix_unit.in_use);
	return 0;
}

static const struct file_operations zoltrix_fops =
{
	.owner		= THIS_MODULE,
	.open           = zoltrix_exclusive_open,
	.release        = zoltrix_exclusive_release,
	.ioctl		= video_ioctl2,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= v4l_compat_ioctl32,
#endif
	.llseek         = no_llseek,
};

static const struct v4l2_ioctl_ops zoltrix_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 zoltrix_radio = {
	.name		= "Zoltrix Radio Plus",
	.fops           = &zoltrix_fops,
	.ioctl_ops 	= &zoltrix_ioctl_ops,
	.release	= video_device_release_empty,
};

static int __init zoltrix_init(void)
{
	if (io == -1) {
		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
		return -EINVAL;
	}
	if ((io != 0x20c) && (io != 0x30c)) {
		printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n");
		return -ENXIO;
	}

	zoltrix_radio.priv = &zoltrix_unit;
	if (!request_region(io, 2, "zoltrix")) {
		printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
		return -EBUSY;
	}

	if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
		release_region(io, 2);
		return -EINVAL;
	}
	printk(KERN_INFO "Zoltrix Radio Plus card driver.\n");

	mutex_init(&zoltrix_unit.lock);

	/* mute card - prevents noisy bootups */

	/* this ensures that the volume is all the way down  */

	outb(0, io);
	outb(0, io);
	msleep(20);
	inb(io + 3);

	zoltrix_unit.curvol = 0;
	zoltrix_unit.stereo = 1;

	return 0;
}

MODULE_AUTHOR("C.van Schaik");
MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
MODULE_LICENSE("GPL");

module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
module_param(radio_nr, int, 0);

static void __exit zoltrix_cleanup_module(void)
{
	video_unregister_device(&zoltrix_radio);
	release_region(io, 2);
}

module_init(zoltrix_init);
module_exit(zoltrix_cleanup_module);
Commit	Line	Data
1da177e4 LT	1	/* zoltrix radio plus driver for Linux radio support
	2	* (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
	3	*
4286c6f6	4	* BUGS
1da177e4 LT	5	* Due to the inconsistency in reading from the signal flags
	6	* it is difficult to get an accurate tuned signal.
	7	*
	8	* It seems that the card is not linear to 0 volume. It cuts off
	9	* at a low volume, and it is not possible (at least I have not found)
	10	* to get fine volume control over the low volume range.
	11	*
	12	* Some code derived from code by Romolo Manfredini
	13	* romolo@bicnet.it
	14	*
	15	* 1999-05-06 - (C. van Schaik)
	16	* - Make signal strength and stereo scans
4286c6f6	17	* kinder to cpu while in delay
1da177e4 LT	18	* 1999-01-05 - (C. van Schaik)
	19	* - Changed tuning to 1/160Mhz accuracy
	20	* - Added stereo support
	21	* (card defaults to stereo)
	22	* (can explicitly force mono on the card)
	23	* (can detect if station is in stereo)
	24	* - Added unmute function
	25	* - Reworked ioctl functions
	26	* 2002-07-15 - Fix Stereo typo
2ab65299 MCC	27	*
	28	* 2006-07-24 - Converted to V4L2 API
	29	* by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	30	*/
	31
	32	#include <linux/module.h> /* Modules */
	33	#include <linux/init.h> /* Initdata */
fb911ee8	34	#include <linux/ioport.h> /* request_region */
1da177e4 LT	35	#include <linux/delay.h> /* udelay, msleep */
	36	#include <asm/io.h> /* outb, outb_p */
	37	#include <asm/uaccess.h> /* copy to/from user */
2ab65299	38	#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3	39	#include <media/v4l2-common.h>
35ea11ff	40	#include <media/v4l2-ioctl.h>
1da177e4	41
2ab65299 MCC	42	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	43	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	44
	45	static struct v4l2_queryctrl radio_qctrl[] = {
	46	{
	47	.id = V4L2_CID_AUDIO_MUTE,
	48	.name = "Mute",
	49	.minimum = 0,
	50	.maximum = 1,
	51	.default_value = 1,
	52	.type = V4L2_CTRL_TYPE_BOOLEAN,
	53	},{
	54	.id = V4L2_CID_AUDIO_VOLUME,
	55	.name = "Volume",
	56	.minimum = 0,
	57	.maximum = 65535,
	58	.step = 4096,
	59	.default_value = 0xff,
	60	.type = V4L2_CTRL_TYPE_INTEGER,
	61	}
	62	};
	63
1da177e4 LT	64	#ifndef CONFIG_RADIO_ZOLTRIX_PORT
	65	#define CONFIG_RADIO_ZOLTRIX_PORT -1
	66	#endif
	67
	68	static int io = CONFIG_RADIO_ZOLTRIX_PORT;
	69	static int radio_nr = -1;
	70
	71	struct zol_device {
3ca685aa	72	unsigned long in_use;
1da177e4 LT	73	int port;
	74	int curvol;
	75	unsigned long curfreq;
	76	int muted;
	77	unsigned int stereo;
3593cab5	78	struct mutex lock;
1da177e4 LT	79	};
	80
	81	static int zol_setvol(struct zol_device *dev, int vol)
	82	{
	83	dev->curvol = vol;
	84	if (dev->muted)
	85	return 0;
	86
3593cab5	87	mutex_lock(&dev->lock);
1da177e4 LT	88	if (vol == 0) {
	89	outb(0, io);
	90	outb(0, io);
	91	inb(io + 3); /* Zoltrix needs to be read to confirm */
3593cab5	92	mutex_unlock(&dev->lock);
1da177e4 LT	93	return 0;
	94	}
	95
	96	outb(dev->curvol-1, io);
	97	msleep(10);
	98	inb(io + 2);
3593cab5	99	mutex_unlock(&dev->lock);
1da177e4 LT	100	return 0;
	101	}
	102
	103	static void zol_mute(struct zol_device *dev)
	104	{
	105	dev->muted = 1;
3593cab5	106	mutex_lock(&dev->lock);
1da177e4 LT	107	outb(0, io);
	108	outb(0, io);
	109	inb(io + 3); /* Zoltrix needs to be read to confirm */
3593cab5	110	mutex_unlock(&dev->lock);
1da177e4 LT	111	}
	112
	113	static void zol_unmute(struct zol_device *dev)
	114	{
	115	dev->muted = 0;
	116	zol_setvol(dev, dev->curvol);
	117	}
	118
	119	static int zol_setfreq(struct zol_device *dev, unsigned long freq)
	120	{
	121	/* tunes the radio to the desired frequency */
	122	unsigned long long bitmask, f, m;
	123	unsigned int stereo = dev->stereo;
	124	int i;
	125
	126	if (freq == 0)
	127	return 1;
	128	m = (freq / 160 - 8800) * 2;
	129	f = (unsigned long long) m + 0x4d1c;
	130
	131	bitmask = 0xc480402c10080000ull;
	132	i = 45;
	133
3593cab5	134	mutex_lock(&dev->lock);
4286c6f6	135
1da177e4 LT	136	outb(0, io);
	137	outb(0, io);
	138	inb(io + 3); /* Zoltrix needs to be read to confirm */
	139
	140	outb(0x40, io);
	141	outb(0xc0, io);
	142
	143	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31));
	144	while (i--) {
	145	if ((bitmask & 0x8000000000000000ull) != 0) {
	146	outb(0x80, io);
	147	udelay(50);
	148	outb(0x00, io);
	149	udelay(50);
	150	outb(0x80, io);
	151	udelay(50);
	152	} else {
	153	outb(0xc0, io);
	154	udelay(50);
	155	outb(0x40, io);
	156	udelay(50);
	157	outb(0xc0, io);
	158	udelay(50);
	159	}
	160	bitmask *= 2;
	161	}
	162	/* termination sequence */
	163	outb(0x80, io);
	164	outb(0xc0, io);
	165	outb(0x40, io);
	166	udelay(1000);
	167	inb(io+2);
	168
4286c6f6 MCC	169	udelay(1000);
4286c6f6 MCC	170
1da177e4 LT	171	if (dev->muted)
	172	{
	173	outb(0, io);
	174	outb(0, io);
	175	inb(io + 3);
	176	udelay(1000);
	177	}
4286c6f6	178
3593cab5	179	mutex_unlock(&dev->lock);
4286c6f6	180
1da177e4 LT	181	if(!dev->muted)
1da177e4 LT	182	{
4286c6f6	183	zol_setvol(dev, dev->curvol);
1da177e4 LT	184	}
	185	return 0;
	186	}
	187
	188	/* Get signal strength */
	189
	190	static int zol_getsigstr(struct zol_device *dev)
	191	{
	192	int a, b;
	193
3593cab5	194	mutex_lock(&dev->lock);
1da177e4 LT	195	outb(0x00, io); /* This stuff I found to do nothing */
	196	outb(dev->curvol, io);
	197	msleep(20);
	198
	199	a = inb(io);
	200	msleep(10);
	201	b = inb(io);
	202
3593cab5	203	mutex_unlock(&dev->lock);
4286c6f6	204
1da177e4 LT	205	if (a != b)
	206	return (0);
	207
4286c6f6	208	if ((a == 0xcf) \|\| (a == 0xdf) /* I found this out by playing */
1da177e4 LT	209	\|\| (a == 0xef)) /* with a binary scanner on the card io */
1da177e4 LT	210	return (1);
4286c6f6	211	return (0);
1da177e4 LT	212	}
	213
	214	static int zol_is_stereo (struct zol_device *dev)
	215	{
	216	int x1, x2;
	217
3593cab5	218	mutex_lock(&dev->lock);
4286c6f6	219
1da177e4 LT	220	outb(0x00, io);
	221	outb(dev->curvol, io);
	222	msleep(20);
	223
	224	x1 = inb(io);
	225	msleep(10);
	226	x2 = inb(io);
	227
3593cab5	228	mutex_unlock(&dev->lock);
4286c6f6	229
1da177e4 LT	230	if ((x1 == x2) && (x1 == 0xcf))
	231	return 1;
	232	return 0;
	233	}
	234
a1314b1a DL	235	static int vidioc_querycap(struct file file, void priv,
	236	struct v4l2_capability *v)
	237	{
	238	strlcpy(v->driver, "radio-zoltrix", sizeof(v->driver));
	239	strlcpy(v->card, "Zoltrix Radio", sizeof(v->card));
	240	sprintf(v->bus_info, "ISA");
	241	v->version = RADIO_VERSION;
	242	v->capabilities = V4L2_CAP_TUNER;
	243	return 0;
	244	}
	245
	246	static int vidioc_g_tuner(struct file file, void priv,
	247	struct v4l2_tuner *v)
1da177e4 LT	248	{
	249	struct video_device *dev = video_devdata(file);
	250	struct zol_device *zol = dev->priv;
	251
a1314b1a DL	252	if (v->index > 0)
a1314b1a DL	253	return -EINVAL;
2ab65299	254
a1314b1a DL	255	strcpy(v->name, "FM");
	256	v->type = V4L2_TUNER_RADIO;
	257	v->rangelow = (88*16000);
	258	v->rangehigh = (108*16000);
	259	v->rxsubchans = V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	260	v->capability = V4L2_TUNER_CAP_LOW;
	261	if (zol_is_stereo(zol))
	262	v->audmode = V4L2_TUNER_MODE_STEREO;
	263	else
	264	v->audmode = V4L2_TUNER_MODE_MONO;
	265	v->signal = 0xFFFF*zol_getsigstr(zol);
	266	return 0;
	267	}
2ab65299	268
a1314b1a DL	269	static int vidioc_s_tuner(struct file file, void priv,
	270	struct v4l2_tuner *v)
	271	{
	272	if (v->index > 0)
	273	return -EINVAL;
	274	return 0;
	275	}
2ab65299	276
a1314b1a DL	277	static int vidioc_s_frequency(struct file file, void priv,
	278	struct v4l2_frequency *f)
	279	{
	280	struct video_device *dev = video_devdata(file);
	281	struct zol_device *zol = dev->priv;
2ab65299	282
a1314b1a DL	283	zol->curfreq = f->frequency;
	284	zol_setfreq(zol, zol->curfreq);
	285	return 0;
	286	}
2ab65299	287
a1314b1a DL	288	static int vidioc_g_frequency(struct file file, void priv,
	289	struct v4l2_frequency *f)
	290	{
	291	struct video_device *dev = video_devdata(file);
	292	struct zol_device *zol = dev->priv;
	293
	294	f->type = V4L2_TUNER_RADIO;
	295	f->frequency = zol->curfreq;
	296	return 0;
	297	}
1da177e4	298
a1314b1a DL	299	static int vidioc_queryctrl(struct file file, void priv,
	300	struct v4l2_queryctrl *qc)
	301	{
	302	int i;
1da177e4	303
a1314b1a DL	304	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	305	if (qc->id && qc->id == radio_qctrl[i].id) {
	306	memcpy(qc, &(radio_qctrl[i]),
	307	sizeof(*qc));
2ab65299 MCC	308	return 0;
2ab65299 MCC	309	}
a1314b1a DL	310	}
	311	return -EINVAL;
	312	}
	313
	314	static int vidioc_g_ctrl(struct file file, void priv,
	315	struct v4l2_control *ctrl)
	316	{
	317	struct video_device *dev = video_devdata(file);
	318	struct zol_device *zol = dev->priv;
	319
	320	switch (ctrl->id) {
	321	case V4L2_CID_AUDIO_MUTE:
	322	ctrl->value = zol->muted;
	323	return 0;
	324	case V4L2_CID_AUDIO_VOLUME:
	325	ctrl->value = zol->curvol * 4096;
	326	return 0;
	327	}
	328	return -EINVAL;
	329	}
	330
	331	static int vidioc_s_ctrl(struct file file, void priv,
	332	struct v4l2_control *ctrl)
	333	{
	334	struct video_device *dev = video_devdata(file);
	335	struct zol_device *zol = dev->priv;
	336
	337	switch (ctrl->id) {
	338	case V4L2_CID_AUDIO_MUTE:
	339	if (ctrl->value)
	340	zol_mute(zol);
	341	else {
	342	zol_unmute(zol);
	343	zol_setvol(zol,zol->curvol);
2ab65299	344	}
a1314b1a DL	345	return 0;
	346	case V4L2_CID_AUDIO_VOLUME:
	347	zol_setvol(zol,ctrl->value/4096);
	348	return 0;
	349	}
	350	zol->stereo = 1;
	351	zol_setfreq(zol, zol->curfreq);
2ab65299 MCC	352	#if 0
2ab65299 MCC	353	/* FIXME: Implement stereo/mono switch on V4L2 */
1da177e4 LT	354	if (v->mode & VIDEO_SOUND_STEREO) {
	355	zol->stereo = 1;
	356	zol_setfreq(zol, zol->curfreq);
	357	}
	358	if (v->mode & VIDEO_SOUND_MONO) {
	359	zol->stereo = 0;
	360	zol_setfreq(zol, zol->curfreq);
	361	}
2ab65299	362	#endif
a1314b1a DL	363	return -EINVAL;
a1314b1a DL	364	}
2ab65299	365
a1314b1a DL	366	static int vidioc_g_audio(struct file file, void priv,
	367	struct v4l2_audio *a)
	368	{
	369	if (a->index > 1)
	370	return -EINVAL;
	371
	372	strcpy(a->name, "Radio");
	373	a->capability = V4L2_AUDCAP_STEREO;
	374	return 0;
	375	}
	376
	377	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	378	{
	379	*i = 0;
	380	return 0;
1da177e4 LT	381	}
1da177e4 LT	382
a1314b1a	383	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
1da177e4	384	{
a1314b1a DL	385	if (i != 0)
	386	return -EINVAL;
	387	return 0;
	388	}
	389
	390	static int vidioc_s_audio(struct file file, void priv,
	391	struct v4l2_audio *a)
	392	{
	393	if (a->index != 0)
	394	return -EINVAL;
	395	return 0;
1da177e4 LT	396	}
	397
	398	static struct zol_device zoltrix_unit;
	399
3ca685aa HV	400	static int zoltrix_exclusive_open(struct inode inode, struct file file)
	401	{
	402	return test_and_set_bit(0, &zoltrix_unit.in_use) ? -EBUSY : 0;
	403	}
	404
	405	static int zoltrix_exclusive_release(struct inode inode, struct file file)
	406	{
	407	clear_bit(0, &zoltrix_unit.in_use);
	408	return 0;
	409	}
	410
fa027c2a	411	static const struct file_operations zoltrix_fops =
1da177e4 LT	412	{
1da177e4 LT	413	.owner = THIS_MODULE,
3ca685aa HV	414	.open = zoltrix_exclusive_open,
3ca685aa HV	415	.release = zoltrix_exclusive_release,
a1314b1a	416	.ioctl = video_ioctl2,
078ff795	417	#ifdef CONFIG_COMPAT
0d0fbf81	418	.compat_ioctl = v4l_compat_ioctl32,
078ff795	419	#endif
1da177e4 LT	420	.llseek = no_llseek,
	421	};
	422
a399810c	423	static const struct v4l2_ioctl_ops zoltrix_ioctl_ops = {
a1314b1a DL	424	.vidioc_querycap = vidioc_querycap,
	425	.vidioc_g_tuner = vidioc_g_tuner,
	426	.vidioc_s_tuner = vidioc_s_tuner,
	427	.vidioc_g_audio = vidioc_g_audio,
	428	.vidioc_s_audio = vidioc_s_audio,
	429	.vidioc_g_input = vidioc_g_input,
	430	.vidioc_s_input = vidioc_s_input,
	431	.vidioc_g_frequency = vidioc_g_frequency,
	432	.vidioc_s_frequency = vidioc_s_frequency,
	433	.vidioc_queryctrl = vidioc_queryctrl,
	434	.vidioc_g_ctrl = vidioc_g_ctrl,
	435	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	436	};
1da177e4 LT	437
a399810c	438	static struct video_device zoltrix_radio = {
a399810c	439	.name = "Zoltrix Radio Plus",
a399810c HV	440	.fops = &zoltrix_fops,
a399810c HV	441	.ioctl_ops = &zoltrix_ioctl_ops,
aa5e90af	442	.release = video_device_release_empty,
a399810c HV	443	};
a399810c HV	444
1da177e4 LT	445	static int __init zoltrix_init(void)
	446	{
	447	if (io == -1) {
	448	printk(KERN_ERR "You must set an I/O address with io=0x???\n");
	449	return -EINVAL;
	450	}
	451	if ((io != 0x20c) && (io != 0x30c)) {
	452	printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n");
	453	return -ENXIO;
	454	}
	455
	456	zoltrix_radio.priv = &zoltrix_unit;
	457	if (!request_region(io, 2, "zoltrix")) {
	458	printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
	459	return -EBUSY;
	460	}
	461
cba99ae8	462	if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
1da177e4 LT	463	release_region(io, 2);
	464	return -EINVAL;
	465	}
	466	printk(KERN_INFO "Zoltrix Radio Plus card driver.\n");
	467
3593cab5	468	mutex_init(&zoltrix_unit.lock);
4286c6f6	469
1da177e4 LT	470	/* mute card - prevents noisy bootups */
	471
	472	/* this ensures that the volume is all the way down */
	473
	474	outb(0, io);
	475	outb(0, io);
	476	msleep(20);
	477	inb(io + 3);
	478
	479	zoltrix_unit.curvol = 0;
	480	zoltrix_unit.stereo = 1;
	481
	482	return 0;
	483	}
	484
	485	MODULE_AUTHOR("C.van Schaik");
	486	MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
	487	MODULE_LICENSE("GPL");
	488
	489	module_param(io, int, 0);
	490	MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
	491	module_param(radio_nr, int, 0);
	492
	493	static void __exit zoltrix_cleanup_module(void)
	494	{
	495	video_unregister_device(&zoltrix_radio);
	496	release_region(io, 2);
	497	}
	498
	499	module_init(zoltrix_init);
	500	module_exit(zoltrix_cleanup_module);
	501