[GitHub/mt8127/android_kernel_alcatel_ttab.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 <linux/videodev2.h>	/* kernel radio structs           */
#include <linux/mutex.h>
#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#include <linux/io.h>		/* outb, outb_p                   */
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>

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

#ifndef CONFIG_RADIO_ZOLTRIX_PORT
#define CONFIG_RADIO_ZOLTRIX_PORT -1
#endif

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

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);

#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)

struct zoltrix {
	struct v4l2_device v4l2_dev;
	struct video_device vdev;
	int io;
	int curvol;
	unsigned long curfreq;
	int muted;
	unsigned int stereo;
	struct mutex lock;
};

static struct zoltrix zoltrix_card;

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

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

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

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

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

static int zol_setfreq(struct zoltrix *zol, unsigned long freq)
{
	/* tunes the radio to the desired frequency */
	struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
	unsigned long long bitmask, f, m;
	unsigned int stereo = zol->stereo;
	int i;

	if (freq == 0) {
		v4l2_warn(v4l2_dev, "cannot set a frequency of 0.\n");
		return -EINVAL;
	}

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

	bitmask = 0xc480402c10080000ull;
	i = 45;

	mutex_lock(&zol->lock);

	zol->curfreq = freq;

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

	outb(0x40, zol->io);
	outb(0xc0, zol->io);

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

	udelay(1000);

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

	mutex_unlock(&zol->lock);

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

/* Get signal strength */
static int zol_getsigstr(struct zoltrix *zol)
{
	int a, b;

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

	a = inb(zol->io);
	msleep(10);
	b = inb(zol->io);

	mutex_unlock(&zol->lock);

	if (a != b)
		return 0;

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

static int zol_is_stereo(struct zoltrix *zol)
{
	int x1, x2;

	mutex_lock(&zol->lock);

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

	x1 = inb(zol->io);
	msleep(10);
	x2 = inb(zol->io);

	mutex_unlock(&zol->lock);

	return x1 == x2 && x1 == 0xcf;
}

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));
	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
	v->version = RADIO_VERSION;
	v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
	return 0;
}

static int vidioc_g_tuner(struct file *file, void *priv,
					struct v4l2_tuner *v)
{
	struct zoltrix *zol = video_drvdata(file);

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

	strlcpy(v->name, "FM", sizeof(v->name));
	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)
{
	return v->index ? -EINVAL : 0;
}

static int vidioc_s_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct zoltrix *zol = video_drvdata(file);

	if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
		return -EINVAL;
	if (zol_setfreq(zol, f->frequency) != 0)
		return -EINVAL;
	return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct zoltrix *zol = video_drvdata(file);

	if (f->tuner != 0)
		return -EINVAL;
	f->type = V4L2_TUNER_RADIO;
	f->frequency = zol->curfreq;
	return 0;
}

static int vidioc_queryctrl(struct file *file, void *priv,
					struct v4l2_queryctrl *qc)
{
	switch (qc->id) {
	case V4L2_CID_AUDIO_MUTE:
		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	case V4L2_CID_AUDIO_VOLUME:
		return v4l2_ctrl_query_fill(qc, 0, 65535, 4096, 65535);
	}
	return -EINVAL;
}

static int vidioc_g_ctrl(struct file *file, void *priv,
				struct v4l2_control *ctrl)
{
	struct zoltrix *zol = video_drvdata(file);

	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 zoltrix *zol = video_drvdata(file);

	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;
	if (zol_setfreq(zol, zol->curfreq) != 0)
		return -EINVAL;
#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_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)
{
	return i ? -EINVAL : 0;
}

static int vidioc_g_audio(struct file *file, void *priv,
					struct v4l2_audio *a)
{
	a->index = 0;
	strlcpy(a->name, "Radio", sizeof(a->name));
	a->capability = V4L2_AUDCAP_STEREO;
	return 0;
}

static int vidioc_s_audio(struct file *file, void *priv,
					struct v4l2_audio *a)
{
	return a->index ? -EINVAL : 0;
}

static const struct v4l2_file_operations zoltrix_fops =
{
	.owner		= THIS_MODULE,
	.unlocked_ioctl	= video_ioctl2,
};

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 int __init zoltrix_init(void)
{
	struct zoltrix *zol = &zoltrix_card;
	struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
	int res;

	strlcpy(v4l2_dev->name, "zoltrix", sizeof(v4l2_dev->name));
	zol->io = io;
	if (zol->io == -1) {
		v4l2_err(v4l2_dev, "You must set an I/O address with io=0x20c or 0x30c\n");
		return -EINVAL;
	}
	if (zol->io != 0x20c && zol->io != 0x30c) {
		v4l2_err(v4l2_dev, "invalid port, try 0x20c or 0x30c\n");
		return -ENXIO;
	}

	if (!request_region(zol->io, 2, "zoltrix")) {
		v4l2_err(v4l2_dev, "port 0x%x already in use\n", zol->io);
		return -EBUSY;
	}

	res = v4l2_device_register(NULL, v4l2_dev);
	if (res < 0) {
		release_region(zol->io, 2);
		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
		return res;
	}

	mutex_init(&zol->lock);

	/* mute card - prevents noisy bootups */

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

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

	zol->curvol = 0;
	zol->stereo = 1;

	strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name));
	zol->vdev.v4l2_dev = v4l2_dev;
	zol->vdev.fops = &zoltrix_fops;
	zol->vdev.ioctl_ops = &zoltrix_ioctl_ops;
	zol->vdev.release = video_device_release_empty;
	video_set_drvdata(&zol->vdev, zol);

	if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
		v4l2_device_unregister(v4l2_dev);
		release_region(zol->io, 2);
		return -EINVAL;
	}
	v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n");

	return 0;
}

static void __exit zoltrix_exit(void)
{
	struct zoltrix *zol = &zoltrix_card;

	video_unregister_device(&zol->vdev);
	v4l2_device_unregister(&zol->v4l2_dev);
	release_region(zol->io, 2);
}

module_init(zoltrix_init);
module_exit(zoltrix_exit);
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	35	#include <linux/delay.h> /* udelay, msleep */
2ab65299	36	#include <linux/videodev2.h> /* kernel radio structs */
ec632c8a HV	37	#include <linux/mutex.h>
	38	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	39	#include <linux/io.h> /* outb, outb_p */
ec632c8a	40	#include <media/v4l2-device.h>
35ea11ff	41	#include <media/v4l2-ioctl.h>
1da177e4	42
ec632c8a HV	43	MODULE_AUTHOR("C.van Schaik");
	44	MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
	45	MODULE_LICENSE("GPL");
2ab65299	46
1da177e4 LT	47	#ifndef CONFIG_RADIO_ZOLTRIX_PORT
	48	#define CONFIG_RADIO_ZOLTRIX_PORT -1
	49	#endif
	50
	51	static int io = CONFIG_RADIO_ZOLTRIX_PORT;
	52	static int radio_nr = -1;
	53
ec632c8a HV	54	module_param(io, int, 0);
	55	MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
	56	module_param(radio_nr, int, 0);
	57
	58	#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
	59
	60	struct zoltrix {
	61	struct v4l2_device v4l2_dev;
	62	struct video_device vdev;
	63	int io;
1da177e4 LT	64	int curvol;
	65	unsigned long curfreq;
	66	int muted;
	67	unsigned int stereo;
3593cab5	68	struct mutex lock;
1da177e4 LT	69	};
1da177e4 LT	70
ec632c8a HV	71	static struct zoltrix zoltrix_card;
	72
	73	static int zol_setvol(struct zoltrix *zol, int vol)
1da177e4	74	{
ec632c8a HV	75	zol->curvol = vol;
ec632c8a HV	76	if (zol->muted)
1da177e4 LT	77	return 0;
1da177e4 LT	78
ec632c8a	79	mutex_lock(&zol->lock);
1da177e4	80	if (vol == 0) {
ec632c8a HV	81	outb(0, zol->io);
	82	outb(0, zol->io);
	83	inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
	84	mutex_unlock(&zol->lock);
1da177e4 LT	85	return 0;
	86	}
	87
ec632c8a	88	outb(zol->curvol-1, zol->io);
1da177e4	89	msleep(10);
ec632c8a HV	90	inb(zol->io + 2);
ec632c8a HV	91	mutex_unlock(&zol->lock);
1da177e4 LT	92	return 0;
	93	}
	94
ec632c8a	95	static void zol_mute(struct zoltrix *zol)
1da177e4	96	{
ec632c8a HV	97	zol->muted = 1;
	98	mutex_lock(&zol->lock);
	99	outb(0, zol->io);
	100	outb(0, zol->io);
	101	inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
	102	mutex_unlock(&zol->lock);
1da177e4 LT	103	}
1da177e4 LT	104
ec632c8a	105	static void zol_unmute(struct zoltrix *zol)
1da177e4	106	{
ec632c8a HV	107	zol->muted = 0;
ec632c8a HV	108	zol_setvol(zol, zol->curvol);
1da177e4 LT	109	}
1da177e4 LT	110
ec632c8a	111	static int zol_setfreq(struct zoltrix *zol, unsigned long freq)
1da177e4 LT	112	{
1da177e4 LT	113	/* tunes the radio to the desired frequency */
ec632c8a	114	struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
1da177e4	115	unsigned long long bitmask, f, m;
ec632c8a	116	unsigned int stereo = zol->stereo;
1da177e4 LT	117	int i;
1da177e4 LT	118
b4be2048	119	if (freq == 0) {
ec632c8a	120	v4l2_warn(v4l2_dev, "cannot set a frequency of 0.\n");
b4be2048 AK	121	return -EINVAL;
	122	}
	123
1da177e4	124	m = (freq / 160 - 8800) * 2;
ec632c8a	125	f = (unsigned long long)m + 0x4d1c;
1da177e4 LT	126
	127	bitmask = 0xc480402c10080000ull;
	128	i = 45;
	129
ec632c8a	130	mutex_lock(&zol->lock);
4286c6f6	131
ec632c8a	132	zol->curfreq = freq;
1da177e4	133
ec632c8a HV	134	outb(0, zol->io);
	135	outb(0, zol->io);
	136	inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
1da177e4	137
ec632c8a HV	138	outb(0x40, zol->io);
	139	outb(0xc0, zol->io);
	140
	141	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ (stereo << 31));
1da177e4 LT	142	while (i--) {
1da177e4 LT	143	if ((bitmask & 0x8000000000000000ull) != 0) {
ec632c8a	144	outb(0x80, zol->io);
1da177e4	145	udelay(50);
ec632c8a	146	outb(0x00, zol->io);
1da177e4	147	udelay(50);
ec632c8a	148	outb(0x80, zol->io);
1da177e4 LT	149	udelay(50);
1da177e4 LT	150	} else {
ec632c8a	151	outb(0xc0, zol->io);
1da177e4	152	udelay(50);
ec632c8a	153	outb(0x40, zol->io);
1da177e4	154	udelay(50);
ec632c8a	155	outb(0xc0, zol->io);
1da177e4 LT	156	udelay(50);
	157	}
	158	bitmask *= 2;
	159	}
	160	/* termination sequence */
ec632c8a HV	161	outb(0x80, zol->io);
	162	outb(0xc0, zol->io);
	163	outb(0x40, zol->io);
1da177e4	164	udelay(1000);
ec632c8a	165	inb(zol->io + 2);
1da177e4	166
4286c6f6 MCC	167	udelay(1000);
4286c6f6 MCC	168
ec632c8a HV	169	if (zol->muted) {
	170	outb(0, zol->io);
	171	outb(0, zol->io);
	172	inb(zol->io + 3);
1da177e4 LT	173	udelay(1000);
1da177e4 LT	174	}
4286c6f6	175
ec632c8a	176	mutex_unlock(&zol->lock);
4286c6f6	177
ec632c8a HV	178	if (!zol->muted)
ec632c8a HV	179	zol_setvol(zol, zol->curvol);
1da177e4 LT	180	return 0;
	181	}
	182
	183	/* Get signal strength */
ec632c8a	184	static int zol_getsigstr(struct zoltrix *zol)
1da177e4 LT	185	{
	186	int a, b;
	187
ec632c8a HV	188	mutex_lock(&zol->lock);
	189	outb(0x00, zol->io); /* This stuff I found to do nothing */
	190	outb(zol->curvol, zol->io);
1da177e4 LT	191	msleep(20);
1da177e4 LT	192
ec632c8a	193	a = inb(zol->io);
1da177e4	194	msleep(10);
ec632c8a	195	b = inb(zol->io);
1da177e4	196
ec632c8a	197	mutex_unlock(&zol->lock);
4286c6f6	198
1da177e4	199	if (a != b)
ec632c8a	200	return 0;
1da177e4	201
ec632c8a HV	202	/* I found this out by playing with a binary scanner on the card io */
ec632c8a HV	203	return a == 0xcf \|\| a == 0xdf \|\| a == 0xef;
1da177e4 LT	204	}
1da177e4 LT	205
ec632c8a	206	static int zol_is_stereo(struct zoltrix *zol)
1da177e4 LT	207	{
	208	int x1, x2;
	209
ec632c8a	210	mutex_lock(&zol->lock);
4286c6f6	211
ec632c8a HV	212	outb(0x00, zol->io);
ec632c8a HV	213	outb(zol->curvol, zol->io);
1da177e4 LT	214	msleep(20);
1da177e4 LT	215
ec632c8a	216	x1 = inb(zol->io);
1da177e4	217	msleep(10);
ec632c8a	218	x2 = inb(zol->io);
1da177e4	219
ec632c8a	220	mutex_unlock(&zol->lock);
4286c6f6	221
ec632c8a	222	return x1 == x2 && x1 == 0xcf;
1da177e4 LT	223	}
1da177e4 LT	224
a1314b1a DL	225	static int vidioc_querycap(struct file file, void priv,
	226	struct v4l2_capability *v)
	227	{
	228	strlcpy(v->driver, "radio-zoltrix", sizeof(v->driver));
	229	strlcpy(v->card, "Zoltrix Radio", sizeof(v->card));
ec632c8a	230	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
a1314b1a	231	v->version = RADIO_VERSION;
ec632c8a	232	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
a1314b1a DL	233	return 0;
	234	}
	235
	236	static int vidioc_g_tuner(struct file file, void priv,
	237	struct v4l2_tuner *v)
1da177e4	238	{
ec632c8a	239	struct zoltrix *zol = video_drvdata(file);
1da177e4	240
a1314b1a DL	241	if (v->index > 0)
a1314b1a DL	242	return -EINVAL;
2ab65299	243
ec632c8a	244	strlcpy(v->name, "FM", sizeof(v->name));
a1314b1a	245	v->type = V4L2_TUNER_RADIO;
ec632c8a HV	246	v->rangelow = 88 * 16000;
	247	v->rangehigh = 108 * 16000;
	248	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
a1314b1a DL	249	v->capability = V4L2_TUNER_CAP_LOW;
	250	if (zol_is_stereo(zol))
	251	v->audmode = V4L2_TUNER_MODE_STEREO;
	252	else
	253	v->audmode = V4L2_TUNER_MODE_MONO;
ec632c8a	254	v->signal = 0xFFFF * zol_getsigstr(zol);
a1314b1a DL	255	return 0;
a1314b1a DL	256	}
2ab65299	257
a1314b1a DL	258	static int vidioc_s_tuner(struct file file, void priv,
	259	struct v4l2_tuner *v)
	260	{
ec632c8a	261	return v->index ? -EINVAL : 0;
a1314b1a	262	}
2ab65299	263
a1314b1a DL	264	static int vidioc_s_frequency(struct file file, void priv,
	265	struct v4l2_frequency *f)
	266	{
ec632c8a	267	struct zoltrix *zol = video_drvdata(file);
2ab65299	268
a3a9e287 HV	269	if (f->tuner != 0 \|\| f->type != V4L2_TUNER_RADIO)
a3a9e287 HV	270	return -EINVAL;
ec632c8a	271	if (zol_setfreq(zol, f->frequency) != 0)
b4be2048	272	return -EINVAL;
a1314b1a DL	273	return 0;
a1314b1a DL	274	}
2ab65299	275
a1314b1a DL	276	static int vidioc_g_frequency(struct file file, void priv,
	277	struct v4l2_frequency *f)
	278	{
ec632c8a	279	struct zoltrix *zol = video_drvdata(file);
a1314b1a	280
a3a9e287 HV	281	if (f->tuner != 0)
a3a9e287 HV	282	return -EINVAL;
a1314b1a DL	283	f->type = V4L2_TUNER_RADIO;
	284	f->frequency = zol->curfreq;
	285	return 0;
	286	}
1da177e4	287
a1314b1a DL	288	static int vidioc_queryctrl(struct file file, void priv,
	289	struct v4l2_queryctrl *qc)
	290	{
ec632c8a HV	291	switch (qc->id) {
	292	case V4L2_CID_AUDIO_MUTE:
	293	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	294	case V4L2_CID_AUDIO_VOLUME:
	295	return v4l2_ctrl_query_fill(qc, 0, 65535, 4096, 65535);
a1314b1a DL	296	}
	297	return -EINVAL;
	298	}
	299
	300	static int vidioc_g_ctrl(struct file file, void priv,
	301	struct v4l2_control *ctrl)
	302	{
ec632c8a	303	struct zoltrix *zol = video_drvdata(file);
a1314b1a DL	304
	305	switch (ctrl->id) {
	306	case V4L2_CID_AUDIO_MUTE:
	307	ctrl->value = zol->muted;
	308	return 0;
	309	case V4L2_CID_AUDIO_VOLUME:
	310	ctrl->value = zol->curvol * 4096;
	311	return 0;
	312	}
	313	return -EINVAL;
	314	}
	315
	316	static int vidioc_s_ctrl(struct file file, void priv,
	317	struct v4l2_control *ctrl)
	318	{
ec632c8a	319	struct zoltrix *zol = video_drvdata(file);
a1314b1a DL	320
	321	switch (ctrl->id) {
	322	case V4L2_CID_AUDIO_MUTE:
	323	if (ctrl->value)
	324	zol_mute(zol);
	325	else {
	326	zol_unmute(zol);
ec632c8a	327	zol_setvol(zol, zol->curvol);
2ab65299	328	}
a1314b1a DL	329	return 0;
a1314b1a DL	330	case V4L2_CID_AUDIO_VOLUME:
ec632c8a	331	zol_setvol(zol, ctrl->value / 4096);
a1314b1a DL	332	return 0;
	333	}
	334	zol->stereo = 1;
ec632c8a	335	if (zol_setfreq(zol, zol->curfreq) != 0)
b4be2048	336	return -EINVAL;
2ab65299 MCC	337	#if 0
2ab65299 MCC	338	/* FIXME: Implement stereo/mono switch on V4L2 */
ec632c8a HV	339	if (v->mode & VIDEO_SOUND_STEREO) {
	340	zol->stereo = 1;
	341	zol_setfreq(zol, zol->curfreq);
	342	}
	343	if (v->mode & VIDEO_SOUND_MONO) {
	344	zol->stereo = 0;
	345	zol_setfreq(zol, zol->curfreq);
	346	}
2ab65299	347	#endif
a1314b1a DL	348	return -EINVAL;
a1314b1a DL	349	}
2ab65299	350
a1314b1a DL	351	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	352	{
	353	*i = 0;
	354	return 0;
1da177e4 LT	355	}
1da177e4 LT	356
a1314b1a	357	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
1da177e4	358	{
ec632c8a	359	return i ? -EINVAL : 0;
a1314b1a DL	360	}
a1314b1a DL	361
ec632c8a	362	static int vidioc_g_audio(struct file file, void priv,
a1314b1a DL	363	struct v4l2_audio *a)
a1314b1a DL	364	{
ec632c8a HV	365	a->index = 0;
	366	strlcpy(a->name, "Radio", sizeof(a->name));
	367	a->capability = V4L2_AUDCAP_STEREO;
a1314b1a	368	return 0;
1da177e4 LT	369	}
1da177e4 LT	370
ec632c8a HV	371	static int vidioc_s_audio(struct file file, void priv,
	372	struct v4l2_audio *a)
	373	{
	374	return a->index ? -EINVAL : 0;
	375	}
1da177e4	376
bec43661	377	static const struct v4l2_file_operations zoltrix_fops =
1da177e4 LT	378	{
1da177e4 LT	379	.owner = THIS_MODULE,
32958fdd	380	.unlocked_ioctl = video_ioctl2,
1da177e4 LT	381	};
1da177e4 LT	382
a399810c	383	static const struct v4l2_ioctl_ops zoltrix_ioctl_ops = {
a1314b1a DL	384	.vidioc_querycap = vidioc_querycap,
	385	.vidioc_g_tuner = vidioc_g_tuner,
	386	.vidioc_s_tuner = vidioc_s_tuner,
	387	.vidioc_g_audio = vidioc_g_audio,
	388	.vidioc_s_audio = vidioc_s_audio,
	389	.vidioc_g_input = vidioc_g_input,
	390	.vidioc_s_input = vidioc_s_input,
	391	.vidioc_g_frequency = vidioc_g_frequency,
	392	.vidioc_s_frequency = vidioc_s_frequency,
	393	.vidioc_queryctrl = vidioc_queryctrl,
	394	.vidioc_g_ctrl = vidioc_g_ctrl,
	395	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	396	};
	397
	398	static int __init zoltrix_init(void)
	399	{
ec632c8a HV	400	struct zoltrix *zol = &zoltrix_card;
	401	struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
	402	int res;
	403
	404	strlcpy(v4l2_dev->name, "zoltrix", sizeof(v4l2_dev->name));
	405	zol->io = io;
	406	if (zol->io == -1) {
b24c20cc	407	v4l2_err(v4l2_dev, "You must set an I/O address with io=0x20c or 0x30c\n");
1da177e4 LT	408	return -EINVAL;
1da177e4 LT	409	}
ec632c8a HV	410	if (zol->io != 0x20c && zol->io != 0x30c) {
ec632c8a HV	411	v4l2_err(v4l2_dev, "invalid port, try 0x20c or 0x30c\n");
1da177e4 LT	412	return -ENXIO;
	413	}
	414
ec632c8a HV	415	if (!request_region(zol->io, 2, "zoltrix")) {
ec632c8a HV	416	v4l2_err(v4l2_dev, "port 0x%x already in use\n", zol->io);
1da177e4 LT	417	return -EBUSY;
	418	}
	419
ec632c8a HV	420	res = v4l2_device_register(NULL, v4l2_dev);
	421	if (res < 0) {
	422	release_region(zol->io, 2);
	423	v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
	424	return res;
	425	}
	426
ec632c8a	427	mutex_init(&zol->lock);
4286c6f6	428
1da177e4 LT	429	/* mute card - prevents noisy bootups */
	430
	431	/* this ensures that the volume is all the way down */
	432
ec632c8a HV	433	outb(0, zol->io);
ec632c8a HV	434	outb(0, zol->io);
1da177e4	435	msleep(20);
ec632c8a	436	inb(zol->io + 3);
1da177e4	437
ec632c8a HV	438	zol->curvol = 0;
ec632c8a HV	439	zol->stereo = 1;
1da177e4	440
32958fdd HV	441	strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name));
	442	zol->vdev.v4l2_dev = v4l2_dev;
	443	zol->vdev.fops = &zoltrix_fops;
	444	zol->vdev.ioctl_ops = &zoltrix_ioctl_ops;
	445	zol->vdev.release = video_device_release_empty;
	446	video_set_drvdata(&zol->vdev, zol);
	447
	448	if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
	449	v4l2_device_unregister(v4l2_dev);
	450	release_region(zol->io, 2);
	451	return -EINVAL;
	452	}
	453	v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n");
	454
1da177e4 LT	455	return 0;
	456	}
	457
ec632c8a	458	static void __exit zoltrix_exit(void)
1da177e4	459	{
ec632c8a HV	460	struct zoltrix *zol = &zoltrix_card;
	461
	462	video_unregister_device(&zol->vdev);
	463	v4l2_device_unregister(&zol->v4l2_dev);
	464	release_region(zol->io, 2);
1da177e4 LT	465	}
	466
	467	module_init(zoltrix_init);
ec632c8a	468	module_exit(zoltrix_exit);
1da177e4	469