[deliverable/linux.git] / drivers / media / radio / radio-rtrack2.c

/* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff
 *
 * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
 * Converted to new API by Alan Cox <Alan.Cox@linux.org>
 * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
 *
 * TODO: Allow for more than one of these foolish entities :-)
 *
 * 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/spinlock.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          = 65535,
		.default_value = 0xff,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}
};

#ifndef CONFIG_RADIO_RTRACK2_PORT
#define CONFIG_RADIO_RTRACK2_PORT -1
#endif

static int io = CONFIG_RADIO_RTRACK2_PORT;
static int radio_nr = -1;
static spinlock_t lock;

struct rt_device
{
	int port;
	unsigned long curfreq;
	int muted;
};


/* local things */

static void rt_mute(struct rt_device *dev)
{
	if(dev->muted)
		return;
	spin_lock(&lock);
	outb(1, io);
	spin_unlock(&lock);
	dev->muted = 1;
}

static void rt_unmute(struct rt_device *dev)
{
	if(dev->muted == 0)
		return;
	spin_lock(&lock);
	outb(0, io);
	spin_unlock(&lock);
	dev->muted = 0;
}

static void zero(void)
{
	outb_p(1, io);
	outb_p(3, io);
	outb_p(1, io);
}

static void one(void)
{
	outb_p(5, io);
	outb_p(7, io);
	outb_p(5, io);
}

static int rt_setfreq(struct rt_device *dev, unsigned long freq)
{
	int i;

	freq = freq / 200 + 856;

	spin_lock(&lock);

	outb_p(0xc8, io);
	outb_p(0xc9, io);
	outb_p(0xc9, io);

	for (i = 0; i < 10; i++)
		zero ();

	for (i = 14; i >= 0; i--)
		if (freq & (1 << i))
			one ();
		else
			zero ();

	outb_p(0xc8, io);
	if (!dev->muted)
		outb_p(0, io);

	spin_unlock(&lock);
	return 0;
}

static int vidioc_querycap(struct file *file, void *priv,
				struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver));
	strlcpy(v->card, "RadioTrack II", sizeof(v->card));
	sprintf(v->bus_info, "ISA");
	v->version = RADIO_VERSION;
	v->capabilities = V4L2_CAP_TUNER;
	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 rt_getsigstr(struct rt_device *dev)
{
	if (inb(io) & 2)	/* bit set = no signal present	*/
		return 0;
	return 1;		/* signal present		*/
}

static int vidioc_g_tuner(struct file *file, void *priv,
				struct v4l2_tuner *v)
{
	struct video_device *dev = video_devdata(file);
	struct rt_device *rt = 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;
	v->capability = V4L2_TUNER_CAP_LOW;
	v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = 0xFFFF*rt_getsigstr(rt);
	return 0;
}

static int vidioc_s_frequency(struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	struct video_device *dev = video_devdata(file);
	struct rt_device *rt = dev->priv;

	rt->curfreq = f->frequency;
	rt_setfreq(rt, rt->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 rt_device *rt = dev->priv;

	f->type = V4L2_TUNER_RADIO;
	f->frequency = rt->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 rt_device *rt = dev->priv;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		ctrl->value = rt->muted;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		if (rt->muted)
			ctrl->value = 0;
		else
			ctrl->value = 65535;
		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 rt_device *rt = dev->priv;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->value)
			rt_mute(rt);
		else
			rt_unmute(rt);
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		if (ctrl->value)
			rt_unmute(rt);
		else
			rt_mute(rt);
		return 0;
	}
	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 rt_device rtrack2_unit;

static const struct file_operations rtrack2_fops = {
	.owner		= THIS_MODULE,
	.open           = video_exclusive_open,
	.release        = video_exclusive_release,
	.ioctl		= video_ioctl2,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= v4l_compat_ioctl32,
#endif
	.llseek         = no_llseek,
};

static struct video_device rtrack2_radio=
{
	.owner		= THIS_MODULE,
	.name		= "RadioTrack II radio",
	.type		= VID_TYPE_TUNER,
	.fops           = &rtrack2_fops,
	.vidioc_querycap    = vidioc_querycap,
	.vidioc_g_tuner     = vidioc_g_tuner,
	.vidioc_s_tuner     = vidioc_s_tuner,
	.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,
	.vidioc_g_audio     = vidioc_g_audio,
	.vidioc_s_audio     = vidioc_s_audio,
	.vidioc_g_input     = vidioc_g_input,
	.vidioc_s_input     = vidioc_s_input,
};

static int __init rtrack2_init(void)
{
	if(io==-1)
	{
		printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n");
		return -EINVAL;
	}
	if (!request_region(io, 4, "rtrack2"))
	{
		printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io);
		return -EBUSY;
	}

	rtrack2_radio.priv=&rtrack2_unit;

	spin_lock_init(&lock);
	if(video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
	{
		release_region(io, 4);
		return -EINVAL;
	}

	printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n");

	/* mute card - prevents noisy bootups */
	outb(1, io);
	rtrack2_unit.muted = 1;

	return 0;
}

MODULE_AUTHOR("Ben Pfaff");
MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
MODULE_LICENSE("GPL");

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

static void __exit rtrack2_cleanup_module(void)
{
	video_unregister_device(&rtrack2_radio);
	release_region(io,4);
}

module_init(rtrack2_init);
module_exit(rtrack2_cleanup_module);

/*
  Local variables:
  compile-command: "mmake"
  End:
*/
Commit	Line	Data
1da177e4	1	/* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff
4286c6f6	2	*
1da177e4 LT	3	* Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
	4	* Converted to new API by Alan Cox <Alan.Cox@linux.org>
	5	* Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
	6	*
	7	* TODO: Allow for more than one of these foolish entities :-)
	8	*
f8c559f8	9	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	10	*/
	11
	12	#include <linux/module.h> /* Modules */
	13	#include <linux/init.h> /* Initdata */
fb911ee8	14	#include <linux/ioport.h> /* request_region */
1da177e4 LT	15	#include <linux/delay.h> /* udelay */
	16	#include <asm/io.h> /* outb, outb_p */
	17	#include <asm/uaccess.h> /* copy to/from user */
f8c559f8	18	#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3	19	#include <media/v4l2-common.h>
1da177e4 LT	20	#include <linux/spinlock.h>
1da177e4 LT	21
f8c559f8 MCC	22	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	23	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	24
	25	static struct v4l2_queryctrl radio_qctrl[] = {
	26	{
	27	.id = V4L2_CID_AUDIO_MUTE,
	28	.name = "Mute",
	29	.minimum = 0,
	30	.maximum = 1,
	31	.default_value = 1,
	32	.type = V4L2_CTRL_TYPE_BOOLEAN,
	33	},{
	34	.id = V4L2_CID_AUDIO_VOLUME,
	35	.name = "Volume",
	36	.minimum = 0,
	37	.maximum = 65535,
	38	.step = 65535,
	39	.default_value = 0xff,
	40	.type = V4L2_CTRL_TYPE_INTEGER,
	41	}
	42	};
	43
1da177e4 LT	44	#ifndef CONFIG_RADIO_RTRACK2_PORT
	45	#define CONFIG_RADIO_RTRACK2_PORT -1
	46	#endif
	47
4286c6f6	48	static int io = CONFIG_RADIO_RTRACK2_PORT;
1da177e4 LT	49	static int radio_nr = -1;
	50	static spinlock_t lock;
	51
	52	struct rt_device
	53	{
	54	int port;
	55	unsigned long curfreq;
	56	int muted;
	57	};
	58
	59
	60	/* local things */
	61
	62	static void rt_mute(struct rt_device *dev)
	63	{
4286c6f6	64	if(dev->muted)
1da177e4 LT	65	return;
	66	spin_lock(&lock);
	67	outb(1, io);
	68	spin_unlock(&lock);
	69	dev->muted = 1;
	70	}
	71
	72	static void rt_unmute(struct rt_device *dev)
	73	{
	74	if(dev->muted == 0)
	75	return;
	76	spin_lock(&lock);
	77	outb(0, io);
	78	spin_unlock(&lock);
	79	dev->muted = 0;
	80	}
	81
	82	static void zero(void)
	83	{
4286c6f6	84	outb_p(1, io);
1da177e4 LT	85	outb_p(3, io);
	86	outb_p(1, io);
	87	}
	88
	89	static void one(void)
	90	{
4286c6f6	91	outb_p(5, io);
1da177e4 LT	92	outb_p(7, io);
	93	outb_p(5, io);
	94	}
	95
	96	static int rt_setfreq(struct rt_device *dev, unsigned long freq)
	97	{
	98	int i;
	99
	100	freq = freq / 200 + 856;
4286c6f6	101
1da177e4 LT	102	spin_lock(&lock);
	103
	104	outb_p(0xc8, io);
	105	outb_p(0xc9, io);
	106	outb_p(0xc9, io);
	107
	108	for (i = 0; i < 10; i++)
	109	zero ();
	110
	111	for (i = 14; i >= 0; i--)
	112	if (freq & (1 << i))
	113	one ();
	114	else
	115	zero ();
	116
	117	outb_p(0xc8, io);
	118	if (!dev->muted)
	119	outb_p(0, io);
4286c6f6	120
1da177e4 LT	121	spin_unlock(&lock);
	122	return 0;
	123	}
	124
25f30389 DL	125	static int vidioc_querycap(struct file file, void priv,
	126	struct v4l2_capability *v)
	127	{
	128	strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver));
	129	strlcpy(v->card, "RadioTrack II", sizeof(v->card));
	130	sprintf(v->bus_info, "ISA");
	131	v->version = RADIO_VERSION;
	132	v->capabilities = V4L2_CAP_TUNER;
	133	return 0;
	134	}
	135
	136	static int vidioc_s_tuner(struct file file, void priv,
	137	struct v4l2_tuner *v)
	138	{
	139	if (v->index > 0)
	140	return -EINVAL;
	141
	142	return 0;
	143	}
	144
1da177e4 LT	145	static int rt_getsigstr(struct rt_device *dev)
	146	{
	147	if (inb(io) & 2) /* bit set = no signal present */
	148	return 0;
	149	return 1; /* signal present */
	150	}
	151
25f30389 DL	152	static int vidioc_g_tuner(struct file file, void priv,
25f30389 DL	153	struct v4l2_tuner *v)
1da177e4 LT	154	{
1da177e4 LT	155	struct video_device *dev = video_devdata(file);
25f30389 DL	156	struct rt_device *rt = dev->priv;
	157
	158	if (v->index > 0)
	159	return -EINVAL;
	160
	161	strcpy(v->name, "FM");
	162	v->type = V4L2_TUNER_RADIO;
	163	v->rangelow = (88*16000);
	164	v->rangehigh = (108*16000);
	165	v->rxsubchans = V4L2_TUNER_SUB_MONO;
	166	v->capability = V4L2_TUNER_CAP_LOW;
	167	v->audmode = V4L2_TUNER_MODE_MONO;
	168	v->signal = 0xFFFF*rt_getsigstr(rt);
	169	return 0;
	170	}
f8c559f8	171
25f30389 DL	172	static int vidioc_s_frequency(struct file file, void priv,
	173	struct v4l2_frequency *f)
	174	{
	175	struct video_device *dev = video_devdata(file);
	176	struct rt_device *rt = dev->priv;
f8c559f8	177
25f30389 DL	178	rt->curfreq = f->frequency;
	179	rt_setfreq(rt, rt->curfreq);
	180	return 0;
	181	}
f8c559f8	182
25f30389 DL	183	static int vidioc_g_frequency(struct file file, void priv,
	184	struct v4l2_frequency *f)
	185	{
	186	struct video_device *dev = video_devdata(file);
	187	struct rt_device *rt = dev->priv;
f8c559f8	188
25f30389 DL	189	f->type = V4L2_TUNER_RADIO;
	190	f->frequency = rt->curfreq;
	191	return 0;
	192	}
f8c559f8	193
25f30389 DL	194	static int vidioc_queryctrl(struct file file, void priv,
	195	struct v4l2_queryctrl *qc)
	196	{
	197	int i;
f8c559f8	198
25f30389 DL	199	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	200	if (qc->id && qc->id == radio_qctrl[i].id) {
	201	memcpy(qc, &(radio_qctrl[i]),
	202	sizeof(*qc));
1da177e4 LT	203	return 0;
1da177e4 LT	204	}
25f30389 DL	205	}
	206	return -EINVAL;
	207	}
f8c559f8	208
25f30389 DL	209	static int vidioc_g_ctrl(struct file file, void priv,
	210	struct v4l2_control *ctrl)
	211	{
	212	struct video_device *dev = video_devdata(file);
	213	struct rt_device *rt = dev->priv;
f8c559f8	214
25f30389 DL	215	switch (ctrl->id) {
	216	case V4L2_CID_AUDIO_MUTE:
	217	ctrl->value = rt->muted;
	218	return 0;
	219	case V4L2_CID_AUDIO_VOLUME:
	220	if (rt->muted)
	221	ctrl->value = 0;
	222	else
	223	ctrl->value = 65535;
	224	return 0;
1da177e4	225	}
25f30389	226	return -EINVAL;
1da177e4 LT	227	}
1da177e4 LT	228
25f30389 DL	229	static int vidioc_s_ctrl(struct file file, void priv,
25f30389 DL	230	struct v4l2_control *ctrl)
1da177e4	231	{
25f30389 DL	232	struct video_device *dev = video_devdata(file);
	233	struct rt_device *rt = dev->priv;
	234
	235	switch (ctrl->id) {
	236	case V4L2_CID_AUDIO_MUTE:
	237	if (ctrl->value)
	238	rt_mute(rt);
	239	else
	240	rt_unmute(rt);
	241	return 0;
	242	case V4L2_CID_AUDIO_VOLUME:
	243	if (ctrl->value)
	244	rt_unmute(rt);
	245	else
	246	rt_mute(rt);
	247	return 0;
	248	}
	249	return -EINVAL;
1da177e4 LT	250	}
1da177e4 LT	251
8b811cf0 DL	252	static int vidioc_g_audio(struct file file, void priv,
	253	struct v4l2_audio *a)
	254	{
	255	if (a->index > 1)
	256	return -EINVAL;
	257
	258	strcpy(a->name, "Radio");
	259	a->capability = V4L2_AUDCAP_STEREO;
	260	return 0;
	261	}
	262
	263	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	264	{
	265	*i = 0;
	266	return 0;
	267	}
	268
	269	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	270	{
	271	if (i != 0)
	272	return -EINVAL;
	273	return 0;
	274	}
	275
	276	static int vidioc_s_audio(struct file file, void priv,
	277	struct v4l2_audio *a)
	278	{
	279	if (a->index != 0)
	280	return -EINVAL;
	281	return 0;
	282	}
	283
1da177e4 LT	284	static struct rt_device rtrack2_unit;
1da177e4 LT	285
fa027c2a	286	static const struct file_operations rtrack2_fops = {
1da177e4 LT	287	.owner = THIS_MODULE,
	288	.open = video_exclusive_open,
	289	.release = video_exclusive_release,
25f30389	290	.ioctl = video_ioctl2,
078ff795	291	#ifdef CONFIG_COMPAT
0d0fbf81	292	.compat_ioctl = v4l_compat_ioctl32,
078ff795	293	#endif
1da177e4 LT	294	.llseek = no_llseek,
	295	};
	296
	297	static struct video_device rtrack2_radio=
	298	{
	299	.owner = THIS_MODULE,
	300	.name = "RadioTrack II radio",
	301	.type = VID_TYPE_TUNER,
1da177e4	302	.fops = &rtrack2_fops,
25f30389 DL	303	.vidioc_querycap = vidioc_querycap,
	304	.vidioc_g_tuner = vidioc_g_tuner,
	305	.vidioc_s_tuner = vidioc_s_tuner,
	306	.vidioc_g_frequency = vidioc_g_frequency,
	307	.vidioc_s_frequency = vidioc_s_frequency,
	308	.vidioc_queryctrl = vidioc_queryctrl,
	309	.vidioc_g_ctrl = vidioc_g_ctrl,
	310	.vidioc_s_ctrl = vidioc_s_ctrl,
8b811cf0 DL	311	.vidioc_g_audio = vidioc_g_audio,
	312	.vidioc_s_audio = vidioc_s_audio,
	313	.vidioc_g_input = vidioc_g_input,
	314	.vidioc_s_input = vidioc_s_input,
1da177e4 LT	315	};
	316
	317	static int __init rtrack2_init(void)
	318	{
	319	if(io==-1)
	320	{
	321	printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n");
	322	return -EINVAL;
	323	}
4286c6f6	324	if (!request_region(io, 4, "rtrack2"))
1da177e4 LT	325	{
	326	printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io);
	327	return -EBUSY;
	328	}
	329
	330	rtrack2_radio.priv=&rtrack2_unit;
	331
4286c6f6	332	spin_lock_init(&lock);
1da177e4 LT	333	if(video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
	334	{
	335	release_region(io, 4);
	336	return -EINVAL;
	337	}
4286c6f6	338
1da177e4 LT	339	printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n");
1da177e4 LT	340
4286c6f6	341	/* mute card - prevents noisy bootups */
1da177e4 LT	342	outb(1, io);
	343	rtrack2_unit.muted = 1;
	344
	345	return 0;
	346	}
	347
	348	MODULE_AUTHOR("Ben Pfaff");
	349	MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
	350	MODULE_LICENSE("GPL");
	351
	352	module_param(io, int, 0);
	353	MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");
	354	module_param(radio_nr, int, 0);
	355
	356	static void __exit rtrack2_cleanup_module(void)
	357	{
	358	video_unregister_device(&rtrack2_radio);
	359	release_region(io,4);
	360	}
	361
	362	module_init(rtrack2_init);
	363	module_exit(rtrack2_cleanup_module);
	364
	365	/*
	366	Local variables:
	367	compile-command: "mmake"
	368	End:
	369	*/