[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / radio / radio-aimslab.c

/* radiotrack (radioreveal) driver for Linux radio support
 * (c) 1997 M. Kirkwood
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 * Converted to new API by Alan Cox <Alan.Cox@linux.org>
 * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
 *
 * History:
 * 1999-02-24	Russell Kroll <rkroll@exploits.org>
 * 		Fine tuning/VIDEO_TUNER_LOW
 *		Frequency range expanded to start at 87 MHz
 *
 * TODO: Allow for more than one of these foolish entities :-)
 *
 * Notes on the hardware (reverse engineered from other peoples'
 * reverse engineering of AIMS' code :-)
 *
 *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
 *
 *  The signal strength query is unsurprisingly inaccurate.  And it seems
 *  to indicate that (on my card, at least) the frequency setting isn't
 *  too great.  (I have to tune up .025MHz from what the freq should be
 *  to get a report that the thing is tuned.)
 *
 *  Volume control is (ugh) analogue:
 *   out(port, start_increasing_volume);
 *   wait(a_wee_while);
 *   out(port, stop_changing_the_volume);
 *
 */

#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/version.h>	/* for KERNEL_VERSION MACRO	*/
#define RADIO_VERSION KERNEL_VERSION(0,0,2)

#ifndef CONFIG_RADIO_RTRACK_PORT
#define CONFIG_RADIO_RTRACK_PORT -1
#endif

static int io = CONFIG_RADIO_RTRACK_PORT;
static int radio_nr = -1;
static struct mutex lock;

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


/* local things */

static void sleep_delay(long n)
{
	/* Sleep nicely for 'n' uS */
	int d=n/msecs_to_jiffies(1000);
	if(!d)
		udelay(n);
	else
		msleep(jiffies_to_msecs(d));
}

static void rt_decvol(void)
{
	outb(0x58, io);		/* volume down + sigstr + on	*/
	sleep_delay(100000);
	outb(0xd8, io);		/* volume steady + sigstr + on	*/
}

static void rt_incvol(void)
{
	outb(0x98, io);		/* volume up + sigstr + on	*/
	sleep_delay(100000);
	outb(0xd8, io);		/* volume steady + sigstr + on	*/
}

static void rt_mute(struct rt_device *dev)
{
	dev->muted = 1;
	mutex_lock(&lock);
	outb(0xd0, io);			/* volume steady, off		*/
	mutex_unlock(&lock);
}

static int rt_setvol(struct rt_device *dev, int vol)
{
	int i;

	mutex_lock(&lock);

	if(vol == dev->curvol) {	/* requested volume = current */
		if (dev->muted) {	/* user is unmuting the card  */
			dev->muted = 0;
			outb (0xd8, io);	/* enable card */
		}
		mutex_unlock(&lock);
		return 0;
	}

	if(vol == 0) {			/* volume = 0 means mute the card */
		outb(0x48, io);		/* volume down but still "on"	*/
		sleep_delay(2000000);	/* make sure it's totally down	*/
		outb(0xd0, io);		/* volume steady, off		*/
		dev->curvol = 0;	/* track the volume state!	*/
		mutex_unlock(&lock);
		return 0;
	}

	dev->muted = 0;
	if(vol > dev->curvol)
		for(i = dev->curvol; i < vol; i++)
			rt_incvol();
	else
		for(i = dev->curvol; i > vol; i--)
			rt_decvol();

	dev->curvol = vol;
	mutex_unlock(&lock);
	return 0;
}

/* the 128+64 on these outb's is to keep the volume stable while tuning
 * without them, the volume _will_ creep up with each frequency change
 * and bit 4 (+16) is to keep the signal strength meter enabled
 */

static void send_0_byte(int port, struct rt_device *dev)
{
	if ((dev->curvol == 0) || (dev->muted)) {
		outb_p(128+64+16+  1, port);   /* wr-enable + data low */
		outb_p(128+64+16+2+1, port);   /* clock */
	}
	else {
		outb_p(128+64+16+8+  1, port);  /* on + wr-enable + data low */
		outb_p(128+64+16+8+2+1, port);  /* clock */
	}
	sleep_delay(1000);
}

static void send_1_byte(int port, struct rt_device *dev)
{
	if ((dev->curvol == 0) || (dev->muted)) {
		outb_p(128+64+16+4  +1, port);   /* wr-enable+data high */
		outb_p(128+64+16+4+2+1, port);   /* clock */
	}
	else {
		outb_p(128+64+16+8+4  +1, port); /* on+wr-enable+data high */
		outb_p(128+64+16+8+4+2+1, port); /* clock */
	}

	sleep_delay(1000);
}

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

	/* adapted from radio-aztech.c */

	/* now uses VIDEO_TUNER_LOW for fine tuning */

	freq += 171200;			/* Add 10.7 MHz IF 		*/
	freq /= 800;			/* Convert to 50 kHz units	*/

	mutex_lock(&lock);			/* Stop other ops interfering */

	send_0_byte (io, dev);		/*  0: LSB of frequency		*/

	for (i = 0; i < 13; i++)	/*   : frequency bits (1-13)	*/
		if (freq & (1 << i))
			send_1_byte (io, dev);
		else
			send_0_byte (io, dev);

	send_0_byte (io, dev);		/* 14: test bit - always 0    */
	send_0_byte (io, dev);		/* 15: test bit - always 0    */

	send_0_byte (io, dev);		/* 16: band data 0 - always 0 */
	send_0_byte (io, dev);		/* 17: band data 1 - always 0 */
	send_0_byte (io, dev);		/* 18: band data 2 - always 0 */
	send_0_byte (io, dev);		/* 19: time base - always 0   */

	send_0_byte (io, dev);		/* 20: spacing (0 = 25 kHz)   */
	send_1_byte (io, dev);		/* 21: spacing (1 = 25 kHz)   */
	send_0_byte (io, dev);		/* 22: spacing (0 = 25 kHz)   */
	send_1_byte (io, dev);		/* 23: AM/FM (FM = 1, always) */

	if ((dev->curvol == 0) || (dev->muted))
		outb (0xd0, io);	/* volume steady + sigstr */
	else
		outb (0xd8, io);	/* volume steady + sigstr + on */

	mutex_unlock(&lock);

	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 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       = 0xff,
		.step          = 1,
		.default_value = 0xff,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}
};

static int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-aimslab", sizeof(v->driver));
	strlcpy(v->card, "RadioTrack", 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 rt_device *rt = video_drvdata(file);

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

	strcpy(v->name, "FM");
	v->type = V4L2_TUNER_RADIO;
	v->rangelow = (87*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_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 rt_device *rt = video_drvdata(file);

	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 rt_device *rt = video_drvdata(file);

	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 rt_device *rt = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		ctrl->value = rt->muted;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		ctrl->value = rt->curvol * 6554;
		return 0;
	}
	return -EINVAL;
}

static int vidioc_s_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct rt_device *rt = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->value)
			rt_mute(rt);
		else
			rt_setvol(rt,rt->curvol);
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		rt_setvol(rt,ctrl->value);
		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 rtrack_unit;

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

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

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

static const struct v4l2_ioctl_ops rtrack_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 rtrack_radio = {
	.name		= "RadioTrack radio",
	.fops           = &rtrack_fops,
	.ioctl_ops 	= &rtrack_ioctl_ops,
	.release	= video_device_release_empty,
};

static int __init rtrack_init(void)
{
	if(io==-1)
	{
		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
		return -EINVAL;
	}

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

	video_set_drvdata(&rtrack_radio, &rtrack_unit);

	if (video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
		release_region(io, 2);
		return -EINVAL;
	}
	printk(KERN_INFO "AIMSlab RadioTrack/RadioReveal card driver.\n");

	/* Set up the I/O locking */

	mutex_init(&lock);

	/* mute card - prevents noisy bootups */

	/* this ensures that the volume is all the way down  */
	outb(0x48, io);		/* volume down but still "on"	*/
	sleep_delay(2000000);	/* make sure it's totally down	*/
	outb(0xc0, io);		/* steady volume, mute card	*/
	rtrack_unit.curvol = 0;

	return 0;
}

MODULE_AUTHOR("M.Kirkwood");
MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
MODULE_LICENSE("GPL");

module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");
module_param(radio_nr, int, 0);

static void __exit cleanup_rtrack_module(void)
{
	video_unregister_device(&rtrack_radio);
	release_region(io,2);
}

module_init(rtrack_init);
module_exit(cleanup_rtrack_module);
Commit	Line	Data
1da177e4 LT	1	/* radiotrack (radioreveal) driver for Linux radio support
1da177e4 LT	2	* (c) 1997 M. Kirkwood
46ff2c72	3	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	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	* History:
	8	* 1999-02-24 Russell Kroll <rkroll@exploits.org>
	9	* Fine tuning/VIDEO_TUNER_LOW
	10	* Frequency range expanded to start at 87 MHz
	11	*
	12	* TODO: Allow for more than one of these foolish entities :-)
	13	*
	14	* Notes on the hardware (reverse engineered from other peoples'
	15	* reverse engineering of AIMS' code :-)
	16	*
	17	* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
	18	*
	19	* The signal strength query is unsurprisingly inaccurate. And it seems
	20	* to indicate that (on my card, at least) the frequency setting isn't
	21	* too great. (I have to tune up .025MHz from what the freq should be
	22	* to get a report that the thing is tuned.)
	23	*
	24	* Volume control is (ugh) analogue:
	25	* out(port, start_increasing_volume);
	26	* wait(a_wee_while);
	27	* out(port, stop_changing_the_volume);
4286c6f6	28	*
1da177e4 LT	29	*/
	30
	31	#include <linux/module.h> /* Modules */
	32	#include <linux/init.h> /* Initdata */
fb911ee8	33	#include <linux/ioport.h> /* request_region */
1da177e4 LT	34	#include <linux/delay.h> /* udelay */
	35	#include <asm/io.h> /* outb, outb_p */
	36	#include <asm/uaccess.h> /* copy to/from user */
46ff2c72	37	#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3	38	#include <media/v4l2-common.h>
35ea11ff	39	#include <media/v4l2-ioctl.h>
1da177e4	40
46ff2c72 MCC	41	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	42	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	43
1da177e4 LT	44	#ifndef CONFIG_RADIO_RTRACK_PORT
	45	#define CONFIG_RADIO_RTRACK_PORT -1
	46	#endif
	47
4286c6f6	48	static int io = CONFIG_RADIO_RTRACK_PORT;
1da177e4	49	static int radio_nr = -1;
3593cab5	50	static struct mutex lock;
1da177e4 LT	51
	52	struct rt_device
	53	{
3ca685aa	54	unsigned long in_use;
1da177e4 LT	55	int port;
	56	int curvol;
	57	unsigned long curfreq;
	58	int muted;
	59	};
	60
	61
	62	/* local things */
	63
	64	static void sleep_delay(long n)
	65	{
	66	/* Sleep nicely for 'n' uS */
a2d66a37	67	int d=n/msecs_to_jiffies(1000);
1da177e4 LT	68	if(!d)
	69	udelay(n);
	70	else
	71	msleep(jiffies_to_msecs(d));
	72	}
	73
	74	static void rt_decvol(void)
	75	{
	76	outb(0x58, io); /* volume down + sigstr + on */
	77	sleep_delay(100000);
	78	outb(0xd8, io); /* volume steady + sigstr + on */
	79	}
	80
	81	static void rt_incvol(void)
	82	{
	83	outb(0x98, io); /* volume up + sigstr + on */
	84	sleep_delay(100000);
	85	outb(0xd8, io); /* volume steady + sigstr + on */
	86	}
	87
	88	static void rt_mute(struct rt_device *dev)
	89	{
	90	dev->muted = 1;
3593cab5	91	mutex_lock(&lock);
1da177e4	92	outb(0xd0, io); /* volume steady, off */
3593cab5	93	mutex_unlock(&lock);
1da177e4 LT	94	}
	95
	96	static int rt_setvol(struct rt_device *dev, int vol)
	97	{
	98	int i;
	99
3593cab5	100	mutex_lock(&lock);
4286c6f6	101
1da177e4 LT	102	if(vol == dev->curvol) { /* requested volume = current */
	103	if (dev->muted) { /* user is unmuting the card */
	104	dev->muted = 0;
	105	outb (0xd8, io); /* enable card */
4286c6f6	106	}
3593cab5	107	mutex_unlock(&lock);
1da177e4 LT	108	return 0;
	109	}
	110
	111	if(vol == 0) { /* volume = 0 means mute the card */
	112	outb(0x48, io); /* volume down but still "on" */
	113	sleep_delay(2000000); /* make sure it's totally down */
	114	outb(0xd0, io); /* volume steady, off */
	115	dev->curvol = 0; /* track the volume state! */
3593cab5	116	mutex_unlock(&lock);
1da177e4 LT	117	return 0;
	118	}
	119
	120	dev->muted = 0;
	121	if(vol > dev->curvol)
4286c6f6	122	for(i = dev->curvol; i < vol; i++)
1da177e4 LT	123	rt_incvol();
1da177e4 LT	124	else
4286c6f6	125	for(i = dev->curvol; i > vol; i--)
1da177e4 LT	126	rt_decvol();
	127
	128	dev->curvol = vol;
3593cab5	129	mutex_unlock(&lock);
1da177e4 LT	130	return 0;
	131	}
	132
4286c6f6	133	/* the 128+64 on these outb's is to keep the volume stable while tuning
1da177e4 LT	134	* without them, the volume _will_ creep up with each frequency change
	135	* and bit 4 (+16) is to keep the signal strength meter enabled
	136	*/
	137
	138	static void send_0_byte(int port, struct rt_device *dev)
	139	{
	140	if ((dev->curvol == 0) \|\| (dev->muted)) {
	141	outb_p(128+64+16+ 1, port); /* wr-enable + data low */
	142	outb_p(128+64+16+2+1, port); /* clock */
	143	}
	144	else {
	145	outb_p(128+64+16+8+ 1, port); /* on + wr-enable + data low */
	146	outb_p(128+64+16+8+2+1, port); /* clock */
	147	}
4286c6f6	148	sleep_delay(1000);
1da177e4 LT	149	}
	150
	151	static void send_1_byte(int port, struct rt_device *dev)
	152	{
	153	if ((dev->curvol == 0) \|\| (dev->muted)) {
	154	outb_p(128+64+16+4 +1, port); /* wr-enable+data high */
	155	outb_p(128+64+16+4+2+1, port); /* clock */
4286c6f6	156	}
1da177e4 LT	157	else {
	158	outb_p(128+64+16+8+4 +1, port); /* on+wr-enable+data high */
	159	outb_p(128+64+16+8+4+2+1, port); /* clock */
	160	}
	161
4286c6f6	162	sleep_delay(1000);
1da177e4 LT	163	}
	164
	165	static int rt_setfreq(struct rt_device *dev, unsigned long freq)
	166	{
	167	int i;
	168
	169	/* adapted from radio-aztech.c */
	170
	171	/* now uses VIDEO_TUNER_LOW for fine tuning */
	172
	173	freq += 171200; /* Add 10.7 MHz IF */
	174	freq /= 800; /* Convert to 50 kHz units */
4286c6f6	175
3593cab5	176	mutex_lock(&lock); /* Stop other ops interfering */
4286c6f6	177
1da177e4 LT	178	send_0_byte (io, dev); /* 0: LSB of frequency */
	179
	180	for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
	181	if (freq & (1 << i))
	182	send_1_byte (io, dev);
	183	else
	184	send_0_byte (io, dev);
	185
	186	send_0_byte (io, dev); /* 14: test bit - always 0 */
	187	send_0_byte (io, dev); /* 15: test bit - always 0 */
	188
	189	send_0_byte (io, dev); /* 16: band data 0 - always 0 */
	190	send_0_byte (io, dev); /* 17: band data 1 - always 0 */
	191	send_0_byte (io, dev); /* 18: band data 2 - always 0 */
	192	send_0_byte (io, dev); /* 19: time base - always 0 */
	193
	194	send_0_byte (io, dev); /* 20: spacing (0 = 25 kHz) */
	195	send_1_byte (io, dev); /* 21: spacing (1 = 25 kHz) */
	196	send_0_byte (io, dev); /* 22: spacing (0 = 25 kHz) */
	197	send_1_byte (io, dev); /* 23: AM/FM (FM = 1, always) */
	198
	199	if ((dev->curvol == 0) \|\| (dev->muted))
	200	outb (0xd0, io); /* volume steady + sigstr */
	201	else
	202	outb (0xd8, io); /* volume steady + sigstr + on */
4286c6f6	203
3593cab5	204	mutex_unlock(&lock);
1da177e4 LT	205
	206	return 0;
	207	}
	208
	209	static int rt_getsigstr(struct rt_device *dev)
	210	{
	211	if (inb(io) & 2) /* bit set = no signal present */
	212	return 0;
	213	return 1; /* signal present */
	214	}
	215
46ff2c72 MCC	216	static struct v4l2_queryctrl radio_qctrl[] = {
	217	{
	218	.id = V4L2_CID_AUDIO_MUTE,
	219	.name = "Mute",
	220	.minimum = 0,
	221	.maximum = 1,
	222	.default_value = 1,
	223	.type = V4L2_CTRL_TYPE_BOOLEAN,
	224	},{
	225	.id = V4L2_CID_AUDIO_VOLUME,
	226	.name = "Volume",
	227	.minimum = 0,
	228	.maximum = 0xff,
	229	.step = 1,
	230	.default_value = 0xff,
	231	.type = V4L2_CTRL_TYPE_INTEGER,
	232	}
	233	};
	234
385e8d8f DL	235	static int vidioc_querycap(struct file file, void priv,
	236	struct v4l2_capability *v)
	237	{
	238	strlcpy(v->driver, "radio-aimslab", sizeof(v->driver));
	239	strlcpy(v->card, "RadioTrack", 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	248	{
c170ecf4	249	struct rt_device *rt = video_drvdata(file);
4286c6f6	250
385e8d8f DL	251	if (v->index > 0)
385e8d8f DL	252	return -EINVAL;
46ff2c72	253
385e8d8f DL	254	strcpy(v->name, "FM");
	255	v->type = V4L2_TUNER_RADIO;
	256	v->rangelow = (87*16000);
	257	v->rangehigh = (108*16000);
	258	v->rxsubchans = V4L2_TUNER_SUB_MONO;
	259	v->capability = V4L2_TUNER_CAP_LOW;
	260	v->audmode = V4L2_TUNER_MODE_MONO;
	261	v->signal = 0xffff*rt_getsigstr(rt);
	262	return 0;
	263	}
	264
	265	static int vidioc_s_tuner(struct file file, void priv,
	266	struct v4l2_tuner *v)
	267	{
	268	if (v->index > 0)
	269	return -EINVAL;
	270	return 0;
	271	}
46ff2c72	272
385e8d8f DL	273	static int vidioc_s_frequency(struct file file, void priv,
	274	struct v4l2_frequency *f)
	275	{
c170ecf4	276	struct rt_device *rt = video_drvdata(file);
46ff2c72	277
385e8d8f DL	278	rt->curfreq = f->frequency;
	279	rt_setfreq(rt, rt->curfreq);
	280	return 0;
	281	}
46ff2c72	282
385e8d8f DL	283	static int vidioc_g_frequency(struct file file, void priv,
	284	struct v4l2_frequency *f)
	285	{
c170ecf4	286	struct rt_device *rt = video_drvdata(file);
46ff2c72	287
385e8d8f DL	288	f->type = V4L2_TUNER_RADIO;
	289	f->frequency = rt->curfreq;
	290	return 0;
	291	}
46ff2c72	292
385e8d8f DL	293	static int vidioc_queryctrl(struct file file, void priv,
	294	struct v4l2_queryctrl *qc)
	295	{
	296	int i;
46ff2c72	297
385e8d8f DL	298	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	299	if (qc->id && qc->id == radio_qctrl[i].id) {
	300	memcpy(qc, &(radio_qctrl[i]),
	301	sizeof(*qc));
1da177e4 LT	302	return 0;
1da177e4 LT	303	}
385e8d8f DL	304	}
	305	return -EINVAL;
	306	}
46ff2c72	307
385e8d8f DL	308	static int vidioc_g_ctrl(struct file file, void priv,
	309	struct v4l2_control *ctrl)
	310	{
c170ecf4	311	struct rt_device *rt = video_drvdata(file);
46ff2c72	312
385e8d8f DL	313	switch (ctrl->id) {
	314	case V4L2_CID_AUDIO_MUTE:
	315	ctrl->value = rt->muted;
	316	return 0;
	317	case V4L2_CID_AUDIO_VOLUME:
	318	ctrl->value = rt->curvol * 6554;
	319	return 0;
	320	}
	321	return -EINVAL;
	322	}
46ff2c72	323
385e8d8f DL	324	static int vidioc_s_ctrl(struct file file, void priv,
	325	struct v4l2_control *ctrl)
	326	{
c170ecf4	327	struct rt_device *rt = video_drvdata(file);
46ff2c72	328
385e8d8f DL	329	switch (ctrl->id) {
	330	case V4L2_CID_AUDIO_MUTE:
	331	if (ctrl->value)
	332	rt_mute(rt);
	333	else
	334	rt_setvol(rt,rt->curvol);
	335	return 0;
	336	case V4L2_CID_AUDIO_VOLUME:
	337	rt_setvol(rt,ctrl->value);
	338	return 0;
1da177e4	339	}
385e8d8f DL	340	return -EINVAL;
	341	}
	342
	343	static int vidioc_g_audio (struct file file, void priv,
	344	struct v4l2_audio *a)
	345	{
	346	if (a->index > 1)
	347	return -EINVAL;
	348
	349	strcpy(a->name, "Radio");
	350	a->capability = V4L2_AUDCAP_STEREO;
	351	return 0;
	352	}
	353
	354	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	355	{
	356	*i = 0;
	357	return 0;
	358	}
	359
	360	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	361	{
	362	if (i != 0)
	363	return -EINVAL;
	364	return 0;
1da177e4 LT	365	}
1da177e4 LT	366
385e8d8f DL	367	static int vidioc_s_audio(struct file file, void priv,
385e8d8f DL	368	struct v4l2_audio *a)
1da177e4	369	{
385e8d8f DL	370	if (a->index != 0)
	371	return -EINVAL;
	372	return 0;
1da177e4 LT	373	}
	374
	375	static struct rt_device rtrack_unit;
	376
3ca685aa HV	377	static int rtrack_exclusive_open(struct inode inode, struct file file)
	378	{
	379	return test_and_set_bit(0, &rtrack_unit.in_use) ? -EBUSY : 0;
	380	}
	381
	382	static int rtrack_exclusive_release(struct inode inode, struct file file)
	383	{
	384	clear_bit(0, &rtrack_unit.in_use);
	385	return 0;
	386	}
	387
fa027c2a	388	static const struct file_operations rtrack_fops = {
1da177e4	389	.owner = THIS_MODULE,
3ca685aa HV	390	.open = rtrack_exclusive_open,
3ca685aa HV	391	.release = rtrack_exclusive_release,
385e8d8f	392	.ioctl = video_ioctl2,
078ff795	393	#ifdef CONFIG_COMPAT
0d0fbf81	394	.compat_ioctl = v4l_compat_ioctl32,
078ff795	395	#endif
1da177e4 LT	396	.llseek = no_llseek,
	397	};
	398
a399810c	399	static const struct v4l2_ioctl_ops rtrack_ioctl_ops = {
385e8d8f DL	400	.vidioc_querycap = vidioc_querycap,
	401	.vidioc_g_tuner = vidioc_g_tuner,
	402	.vidioc_s_tuner = vidioc_s_tuner,
	403	.vidioc_g_audio = vidioc_g_audio,
	404	.vidioc_s_audio = vidioc_s_audio,
	405	.vidioc_g_input = vidioc_g_input,
	406	.vidioc_s_input = vidioc_s_input,
	407	.vidioc_g_frequency = vidioc_g_frequency,
	408	.vidioc_s_frequency = vidioc_s_frequency,
	409	.vidioc_queryctrl = vidioc_queryctrl,
	410	.vidioc_g_ctrl = vidioc_g_ctrl,
	411	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	412	};
1da177e4 LT	413
a399810c	414	static struct video_device rtrack_radio = {
a399810c	415	.name = "RadioTrack radio",
a399810c HV	416	.fops = &rtrack_fops,
a399810c HV	417	.ioctl_ops = &rtrack_ioctl_ops,
aa5e90af	418	.release = video_device_release_empty,
a399810c HV	419	};
a399810c HV	420
1da177e4 LT	421	static int __init rtrack_init(void)
	422	{
	423	if(io==-1)
	424	{
	425	printk(KERN_ERR "You must set an I/O address with io=0x???\n");
	426	return -EINVAL;
	427	}
	428
4286c6f6	429	if (!request_region(io, 2, "rtrack"))
1da177e4 LT	430	{
	431	printk(KERN_ERR "rtrack: port 0x%x already in use\n", io);
	432	return -EBUSY;
	433	}
	434
601e9444	435	video_set_drvdata(&rtrack_radio, &rtrack_unit);
4286c6f6	436
cba99ae8	437	if (video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
1da177e4 LT	438	release_region(io, 2);
	439	return -EINVAL;
	440	}
	441	printk(KERN_INFO "AIMSlab RadioTrack/RadioReveal card driver.\n");
	442
	443	/* Set up the I/O locking */
4286c6f6	444
3593cab5	445	mutex_init(&lock);
4286c6f6 MCC	446
4286c6f6 MCC	447	/* mute card - prevents noisy bootups */
1da177e4 LT	448
	449	/* this ensures that the volume is all the way down */
	450	outb(0x48, io); /* volume down but still "on" */
	451	sleep_delay(2000000); /* make sure it's totally down */
	452	outb(0xc0, io); /* steady volume, mute card */
	453	rtrack_unit.curvol = 0;
	454
	455	return 0;
	456	}
	457
	458	MODULE_AUTHOR("M.Kirkwood");
	459	MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
	460	MODULE_LICENSE("GPL");
	461
	462	module_param(io, int, 0);
	463	MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");
	464	module_param(radio_nr, int, 0);
	465
	466	static void __exit cleanup_rtrack_module(void)
	467	{
	468	video_unregister_device(&rtrack_radio);
	469	release_region(io,2);
	470	}
	471
	472	module_init(rtrack_init);
	473	module_exit(cleanup_rtrack_module);
	474