[mirror_ubuntu-bionic-kernel.git] / drivers / media / radio / radio-sf16fmr2.c

/* SF16FMR2 radio driver for Linux radio support
 * heavily based on fmi driver...
 * (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
 *
 * Notes on the hardware
 *
 *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
 *  No volume control - only mute/unmute - you have to use line volume
 *
 *  For read stereo/mono you must wait 0.1 sec after set frequency and
 *  card unmuted so I set frequency on unmute
 *  Signal handling seem to work only on autoscanning (not implemented)
 *
 *  Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 */

#include <linux/module.h>	/* Modules 			*/
#include <linux/init.h>		/* Initdata			*/
#include <linux/ioport.h>	/* request_region		*/
#include <linux/delay.h>	/* udelay			*/
#include <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("Ziglio Frediano, freddy77@angelfire.com");
MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
MODULE_LICENSE("GPL");

static int io = 0x384;
static int radio_nr = -1;

module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
module_param(radio_nr, int, 0);

#define RADIO_VERSION KERNEL_VERSION(0,0,2)

#define AUD_VOL_INDEX 1

#undef DEBUG
//#define DEBUG 1

#ifdef DEBUG
# define  debug_print(s) printk s
#else
# define  debug_print(s)
#endif

/* this should be static vars for module size */
struct fmr2
{
	struct v4l2_device v4l2_dev;
	struct video_device vdev;
	struct mutex lock;
	int io;
	int curvol; /* 0-15 */
	int mute;
	int stereo; /* card is producing stereo audio */
	unsigned long curfreq; /* freq in kHz */
	int card_type;
	u32 flags;
};

static struct fmr2 fmr2_card;

/* hw precision is 12.5 kHz
 * It is only useful to give freq in intervall of 200 (=0.0125Mhz),
 * other bits will be truncated
 */
#define RSF16_ENCODE(x)	((x) / 200 + 856)
#define RSF16_MINFREQ (87 * 16000)
#define RSF16_MAXFREQ (108 * 16000)

static inline void wait(int n, int io)
{
	for (; n; --n)
		inb(io);
}

static void outbits(int bits, unsigned int data, int nWait, int io)
{
	int bit;

	for (; --bits >= 0;) {
		bit = (data >> bits) & 1;
		outb(bit, io);
		wait(nWait, io);
		outb(bit | 2, io);
		wait(nWait, io);
		outb(bit, io);
		wait(nWait, io);
	}
}

static inline void fmr2_mute(int io)
{
	outb(0x00, io);
	wait(4, io);
}

static inline void fmr2_unmute(int io)
{
	outb(0x04, io);
	wait(4, io);
}

static inline int fmr2_stereo_mode(int io)
{
	int n = inb(io);

	outb(6, io);
	inb(io);
	n = ((n >> 3) & 1) ^ 1;
	debug_print((KERN_DEBUG "stereo: %d\n", n));
	return n;
}

static int fmr2_product_info(struct fmr2 *dev)
{
	int n = inb(dev->io);

	n &= 0xC1;
	if (n == 0) {
		/* this should support volume set */
		dev->card_type = 12;
		return 0;
	}
	/* not volume (mine is 11) */
	dev->card_type = (n == 128) ? 11 : 0;
	return n;
}

static inline int fmr2_getsigstr(struct fmr2 *dev)
{
	/* !!! works only if scanning freq */
	int res = 0xffff;

	outb(5, dev->io);
	wait(4, dev->io);
	if (!(inb(dev->io) & 1))
		res = 0;
	debug_print((KERN_DEBUG "signal: %d\n", res));
	return res;
}

/* set frequency and unmute card */
static int fmr2_setfreq(struct fmr2 *dev)
{
	unsigned long freq = dev->curfreq;

	fmr2_mute(dev->io);

	/* 0x42 for mono output
	 * 0x102 forward scanning
	 * 0x182 scansione avanti
	 */
	outbits(9, 0x2, 3, dev->io);
	outbits(16, RSF16_ENCODE(freq), 2, dev->io);

	fmr2_unmute(dev->io);

	/* wait 0.11 sec */
	msleep(110);

	/* NOTE if mute this stop radio
	   you must set freq on unmute */
	dev->stereo = fmr2_stereo_mode(dev->io);
	return 0;
}

/* !!! not tested, in my card this does't work !!! */
static int fmr2_setvolume(struct fmr2 *dev)
{
	int vol[16] = { 0x021, 0x084, 0x090, 0x104,
			0x110, 0x204, 0x210, 0x402,
			0x404, 0x408, 0x410, 0x801,
			0x802, 0x804, 0x808, 0x810 };
	int i, a;
	int n = vol[dev->curvol & 0x0f];

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

	for (i = 12; --i >= 0; ) {
		a = ((n >> i) & 1) << 6; /* if (a==0) a = 0; else a = 0x40; */
		outb(a | 4, dev->io);
		wait(4, dev->io);
		outb(a | 0x24, dev->io);
		wait(4, dev->io);
		outb(a | 4, dev->io);
		wait(4, dev->io);
	}
	for (i = 6; --i >= 0; ) {
		a = ((0x18 >> i) & 1) << 6;
		outb(a | 4, dev->io);
		wait(4, dev->io);
		outb(a | 0x24, dev->io);
		wait(4, dev->io);
		outb(a | 4, dev->io);
		wait(4, dev->io);
	}
	wait(4, dev->io);
	outb(0x14, dev->io);
	return 0;
}

static int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
	strlcpy(v->card, "SF16-FMR2 radio", sizeof(v->card));
	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)
{
	int mult;
	struct fmr2 *fmr2 = video_drvdata(file);

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

	strlcpy(v->name, "FM", sizeof(v->name));
	v->type = V4L2_TUNER_RADIO;

	mult = (fmr2->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
	v->rangelow = RSF16_MINFREQ / mult;
	v->rangehigh = RSF16_MAXFREQ / mult;
	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
	v->capability = fmr2->flags&V4L2_TUNER_CAP_LOW;
	v->audmode = fmr2->stereo ? V4L2_TUNER_MODE_STEREO:
				V4L2_TUNER_MODE_MONO;
	mutex_lock(&fmr2->lock);
	v->signal = fmr2_getsigstr(fmr2);
	mutex_unlock(&fmr2->lock);
	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 fmr2 *fmr2 = video_drvdata(file);

	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
		f->frequency *= 1000;
	if (f->frequency < RSF16_MINFREQ ||
			f->frequency > RSF16_MAXFREQ)
		return -EINVAL;
	/* rounding in steps of 200 to match the freq
	   that will be used */
	fmr2->curfreq = (f->frequency / 200) * 200;

	/* set card freq (if not muted) */
	if (fmr2->curvol && !fmr2->mute) {
		mutex_lock(&fmr2->lock);
		fmr2_setfreq(fmr2);
		mutex_unlock(&fmr2->lock);
	}
	return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct fmr2 *fmr2 = video_drvdata(file);

	f->type = V4L2_TUNER_RADIO;
	f->frequency = fmr2->curfreq;
	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
		f->frequency /= 1000;
	return 0;
}

static int vidioc_queryctrl(struct file *file, void *priv,
					struct v4l2_queryctrl *qc)
{
	struct fmr2 *fmr2 = video_drvdata(file);

	switch (qc->id) {
	case V4L2_CID_AUDIO_MUTE:
		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	case V4L2_CID_AUDIO_VOLUME:
		/* Only card_type == 11 implements volume */
		if (fmr2->card_type == 11)
			return v4l2_ctrl_query_fill(qc, 0, 15, 1, 0);
		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
	}
	return -EINVAL;
}

static int vidioc_g_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct fmr2 *fmr2 = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		ctrl->value = fmr2->mute;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		ctrl->value = fmr2->curvol;
		return 0;
	}
	return -EINVAL;
}

static int vidioc_s_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct fmr2 *fmr2 = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		fmr2->mute = ctrl->value;
		break;
	case V4L2_CID_AUDIO_VOLUME:
		fmr2->curvol = ctrl->value;
		break;
	default:
		return -EINVAL;
	}

#ifdef DEBUG
	if (fmr2->curvol && !fmr2->mute)
		printk(KERN_DEBUG "unmute\n");
	else
		printk(KERN_DEBUG "mute\n");
#endif

	mutex_lock(&fmr2->lock);
	if (fmr2->curvol && !fmr2->mute) {
		fmr2_setvolume(fmr2);
		/* Set frequency and unmute card */
		fmr2_setfreq(fmr2);
	} else
		fmr2_mute(fmr2->io);
	mutex_unlock(&fmr2->lock);
	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)
{
	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 fmr2_fops = {
	.owner          = THIS_MODULE,
	.ioctl          = video_ioctl2,
};

static const struct v4l2_ioctl_ops fmr2_ioctl_ops = {
	.vidioc_querycap    = vidioc_querycap,
	.vidioc_g_tuner     = vidioc_g_tuner,
	.vidioc_s_tuner     = vidioc_s_tuner,
	.vidioc_g_audio     = vidioc_g_audio,
	.vidioc_s_audio     = vidioc_s_audio,
	.vidioc_g_input     = vidioc_g_input,
	.vidioc_s_input     = vidioc_s_input,
	.vidioc_g_frequency = vidioc_g_frequency,
	.vidioc_s_frequency = vidioc_s_frequency,
	.vidioc_queryctrl   = vidioc_queryctrl,
	.vidioc_g_ctrl      = vidioc_g_ctrl,
	.vidioc_s_ctrl      = vidioc_s_ctrl,
};

static int __init fmr2_init(void)
{
	struct fmr2 *fmr2 = &fmr2_card;
	struct v4l2_device *v4l2_dev = &fmr2->v4l2_dev;
	int res;

	strlcpy(v4l2_dev->name, "sf16fmr2", sizeof(v4l2_dev->name));
	fmr2->io = io;
	fmr2->stereo = 1;
	fmr2->flags = V4L2_TUNER_CAP_LOW;
	mutex_init(&fmr2->lock);

	if (!request_region(fmr2->io, 2, "sf16fmr2")) {
		v4l2_err(v4l2_dev, "request_region failed!\n");
		return -EBUSY;
	}

	res = v4l2_device_register(NULL, v4l2_dev);
	if (res < 0) {
		release_region(fmr2->io, 2);
		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
		return res;
	}

	strlcpy(fmr2->vdev.name, v4l2_dev->name, sizeof(fmr2->vdev.name));
	fmr2->vdev.v4l2_dev = v4l2_dev;
	fmr2->vdev.fops = &fmr2_fops;
	fmr2->vdev.ioctl_ops = &fmr2_ioctl_ops;
	fmr2->vdev.release = video_device_release_empty;
	video_set_drvdata(&fmr2->vdev, fmr2);

	if (video_register_device(&fmr2->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
		v4l2_device_unregister(v4l2_dev);
		release_region(fmr2->io, 2);
		return -EINVAL;
	}

	v4l2_info(v4l2_dev, "SF16FMR2 radio card driver at 0x%x.\n", fmr2->io);
	/* mute card - prevents noisy bootups */
	mutex_lock(&fmr2->lock);
	fmr2_mute(fmr2->io);
	fmr2_product_info(fmr2);
	mutex_unlock(&fmr2->lock);
	debug_print((KERN_DEBUG "card_type %d\n", fmr2->card_type));
	return 0;
}

static void __exit fmr2_exit(void)
{
	struct fmr2 *fmr2 = &fmr2_card;

	video_unregister_device(&fmr2->vdev);
	v4l2_device_unregister(&fmr2->v4l2_dev);
	release_region(fmr2->io, 2);
}

module_init(fmr2_init);
module_exit(fmr2_exit);

#ifndef MODULE

static int __init fmr2_setup_io(char *str)
{
	get_option(&str, &io);
	return 1;
}

__setup("sf16fmr2=", fmr2_setup_io);

#endif
Commit	Line	Data
1da177e4 LT	1	/* SF16FMR2 radio driver for Linux radio support
	2	* heavily based on fmi driver...
	3	* (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
	4	*
	5	* Notes on the hardware
	6	*
	7	* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
	8	* No volume control - only mute/unmute - you have to use line volume
	9	*
	10	* For read stereo/mono you must wait 0.1 sec after set frequency and
	11	* card unmuted so I set frequency on unmute
	12	* Signal handling seem to work only on autoscanning (not implemented)
acda0e71 MCC	13	*
acda0e71 MCC	14	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	15	*/
	16
	17	#include <linux/module.h> /* Modules */
	18	#include <linux/init.h> /* Initdata */
fb911ee8	19	#include <linux/ioport.h> /* request_region */
1da177e4	20	#include <linux/delay.h> /* udelay */
acda0e71	21	#include <linux/videodev2.h> /* kernel radio structs */
3593cab5	22	#include <linux/mutex.h>
c32a9d71 HV	23	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
c32a9d71 HV	24	#include <linux/io.h> /* outb, outb_p */
c32a9d71 HV	25	#include <media/v4l2-device.h>
c32a9d71 HV	26	#include <media/v4l2-ioctl.h>
1da177e4	27
c32a9d71 HV	28	MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
	29	MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
	30	MODULE_LICENSE("GPL");
	31
	32	static int io = 0x384;
	33	static int radio_nr = -1;
	34
	35	module_param(io, int, 0);
	36	MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
	37	module_param(radio_nr, int, 0);
1ddf5bc5	38
acda0e71 MCC	39	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
acda0e71 MCC	40
b2cb200f MCC	41	#define AUD_VOL_INDEX 1
b2cb200f MCC	42
1da177e4 LT	43	#undef DEBUG
	44	//#define DEBUG 1
	45
	46	#ifdef DEBUG
	47	# define debug_print(s) printk s
	48	#else
	49	# define debug_print(s)
	50	#endif
	51
	52	/* this should be static vars for module size */
c32a9d71	53	struct fmr2
1da177e4	54	{
c32a9d71 HV	55	struct v4l2_device v4l2_dev;
	56	struct video_device vdev;
	57	struct mutex lock;
	58	int io;
b2cb200f	59	int curvol; /* 0-15 */
1da177e4 LT	60	int mute;
	61	int stereo; /* card is producing stereo audio */
	62	unsigned long curfreq; /* freq in kHz */
	63	int card_type;
c32a9d71	64	u32 flags;
1da177e4 LT	65	};
1da177e4 LT	66
c32a9d71	67	static struct fmr2 fmr2_card;
1da177e4 LT	68
1da177e4 LT	69	/* hw precision is 12.5 kHz
a58a414f	70	* It is only useful to give freq in intervall of 200 (=0.0125Mhz),
1da177e4 LT	71	* other bits will be truncated
1da177e4 LT	72	*/
c32a9d71 HV	73	#define RSF16_ENCODE(x) ((x) / 200 + 856)
	74	#define RSF16_MINFREQ (87 * 16000)
	75	#define RSF16_MAXFREQ (108 * 16000)
1da177e4	76
c32a9d71	77	static inline void wait(int n, int io)
1da177e4	78	{
c32a9d71 HV	79	for (; n; --n)
c32a9d71 HV	80	inb(io);
1da177e4 LT	81	}
1da177e4 LT	82
c32a9d71	83	static void outbits(int bits, unsigned int data, int nWait, int io)
1da177e4 LT	84	{
1da177e4 LT	85	int bit;
c32a9d71 HV	86
	87	for (; --bits >= 0;) {
	88	bit = (data >> bits) & 1;
	89	outb(bit, io);
	90	wait(nWait, io);
	91	outb(bit \| 2, io);
	92	wait(nWait, io);
	93	outb(bit, io);
	94	wait(nWait, io);
1da177e4 LT	95	}
	96	}
	97
c32a9d71	98	static inline void fmr2_mute(int io)
1da177e4	99	{
c32a9d71 HV	100	outb(0x00, io);
c32a9d71 HV	101	wait(4, io);
1da177e4 LT	102	}
1da177e4 LT	103
c32a9d71	104	static inline void fmr2_unmute(int io)
1da177e4	105	{
c32a9d71 HV	106	outb(0x04, io);
c32a9d71 HV	107	wait(4, io);
1da177e4 LT	108	}
1da177e4 LT	109
c32a9d71	110	static inline int fmr2_stereo_mode(int io)
1da177e4	111	{
c32a9d71 HV	112	int n = inb(io);
	113
	114	outb(6, io);
	115	inb(io);
	116	n = ((n >> 3) & 1) ^ 1;
1da177e4 LT	117	debug_print((KERN_DEBUG "stereo: %d\n", n));
	118	return n;
	119	}
	120
c32a9d71	121	static int fmr2_product_info(struct fmr2 *dev)
1da177e4	122	{
c32a9d71 HV	123	int n = inb(dev->io);
c32a9d71 HV	124
1da177e4	125	n &= 0xC1;
c32a9d71	126	if (n == 0) {
1da177e4 LT	127	/* this should support volume set */
	128	dev->card_type = 12;
	129	return 0;
	130	}
	131	/* not volume (mine is 11) */
c32a9d71	132	dev->card_type = (n == 128) ? 11 : 0;
1da177e4 LT	133	return n;
	134	}
	135
c32a9d71	136	static inline int fmr2_getsigstr(struct fmr2 *dev)
1da177e4	137	{
c32a9d71 HV	138	/* !!! works only if scanning freq */
	139	int res = 0xffff;
	140
	141	outb(5, dev->io);
	142	wait(4, dev->io);
	143	if (!(inb(dev->io) & 1))
	144	res = 0;
1da177e4 LT	145	debug_print((KERN_DEBUG "signal: %d\n", res));
	146	return res;
	147	}
	148
	149	/* set frequency and unmute card */
c32a9d71	150	static int fmr2_setfreq(struct fmr2 *dev)
1da177e4	151	{
1da177e4 LT	152	unsigned long freq = dev->curfreq;
1da177e4 LT	153
c32a9d71	154	fmr2_mute(dev->io);
1da177e4 LT	155
	156	/* 0x42 for mono output
	157	* 0x102 forward scanning
	158	* 0x182 scansione avanti
	159	*/
c32a9d71 HV	160	outbits(9, 0x2, 3, dev->io);
c32a9d71 HV	161	outbits(16, RSF16_ENCODE(freq), 2, dev->io);
1da177e4	162
c32a9d71	163	fmr2_unmute(dev->io);
1da177e4 LT	164
	165	/* wait 0.11 sec */
	166	msleep(110);
	167
	168	/* NOTE if mute this stop radio
	169	you must set freq on unmute */
c32a9d71	170	dev->stereo = fmr2_stereo_mode(dev->io);
1da177e4 LT	171	return 0;
	172	}
	173
	174	/* !!! not tested, in my card this does't work !!! */
c32a9d71	175	static int fmr2_setvolume(struct fmr2 *dev)
1da177e4	176	{
b2cb200f MCC	177	int vol[16] = { 0x021, 0x084, 0x090, 0x104,
	178	0x110, 0x204, 0x210, 0x402,
	179	0x404, 0x408, 0x410, 0x801,
	180	0x802, 0x804, 0x808, 0x810 };
c32a9d71	181	int i, a;
b2cb200f	182	int n = vol[dev->curvol & 0x0f];
1da177e4	183
b2cb200f MCC	184	if (dev->card_type != 11)
b2cb200f MCC	185	return 1;
1da177e4	186
b2cb200f	187	for (i = 12; --i >= 0; ) {
c32a9d71 HV	188	a = ((n >> i) & 1) << 6; /* if (a==0) a = 0; else a = 0x40; */
	189	outb(a \| 4, dev->io);
	190	wait(4, dev->io);
	191	outb(a \| 0x24, dev->io);
	192	wait(4, dev->io);
	193	outb(a \| 4, dev->io);
	194	wait(4, dev->io);
1da177e4	195	}
b2cb200f	196	for (i = 6; --i >= 0; ) {
1da177e4	197	a = ((0x18 >> i) & 1) << 6;
c32a9d71 HV	198	outb(a \| 4, dev->io);
	199	wait(4, dev->io);
	200	outb(a \| 0x24, dev->io);
	201	wait(4, dev->io);
	202	outb(a \| 4, dev->io);
	203	wait(4, dev->io);
1da177e4	204	}
c32a9d71 HV	205	wait(4, dev->io);
c32a9d71 HV	206	outb(0x14, dev->io);
1da177e4 LT	207	return 0;
	208	}
	209
34ab962d DL	210	static int vidioc_querycap(struct file file, void priv,
34ab962d DL	211	struct v4l2_capability *v)
1da177e4	212	{
34ab962d DL	213	strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
34ab962d DL	214	strlcpy(v->card, "SF16-FMR2 radio", sizeof(v->card));
c32a9d71	215	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
34ab962d	216	v->version = RADIO_VERSION;
c32a9d71	217	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
34ab962d DL	218	return 0;
	219	}
	220
	221	static int vidioc_g_tuner(struct file file, void priv,
	222	struct v4l2_tuner *v)
	223	{
	224	int mult;
c32a9d71	225	struct fmr2 *fmr2 = video_drvdata(file);
1da177e4	226
34ab962d DL	227	if (v->index > 0)
	228	return -EINVAL;
	229
c32a9d71	230	strlcpy(v->name, "FM", sizeof(v->name));
34ab962d DL	231	v->type = V4L2_TUNER_RADIO;
	232
	233	mult = (fmr2->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
c32a9d71 HV	234	v->rangelow = RSF16_MINFREQ / mult;
c32a9d71 HV	235	v->rangehigh = RSF16_MAXFREQ / mult;
dc47b778	236	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
34ab962d DL	237	v->capability = fmr2->flags&V4L2_TUNER_CAP_LOW;
	238	v->audmode = fmr2->stereo ? V4L2_TUNER_MODE_STEREO:
	239	V4L2_TUNER_MODE_MONO;
c32a9d71	240	mutex_lock(&fmr2->lock);
34ab962d	241	v->signal = fmr2_getsigstr(fmr2);
c32a9d71	242	mutex_unlock(&fmr2->lock);
34ab962d DL	243	return 0;
34ab962d DL	244	}
acda0e71	245
34ab962d DL	246	static int vidioc_s_tuner(struct file file, void priv,
	247	struct v4l2_tuner *v)
	248	{
c32a9d71	249	return v->index ? -EINVAL : 0;
34ab962d	250	}
acda0e71	251
34ab962d DL	252	static int vidioc_s_frequency(struct file file, void priv,
	253	struct v4l2_frequency *f)
	254	{
c32a9d71	255	struct fmr2 *fmr2 = video_drvdata(file);
acda0e71	256
34ab962d DL	257	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
	258	f->frequency *= 1000;
	259	if (f->frequency < RSF16_MINFREQ \|\|
c32a9d71	260	f->frequency > RSF16_MAXFREQ)
34ab962d	261	return -EINVAL;
c32a9d71 HV	262	/* rounding in steps of 200 to match the freq
	263	that will be used */
	264	fmr2->curfreq = (f->frequency / 200) * 200;
34ab962d DL	265
	266	/* set card freq (if not muted) */
	267	if (fmr2->curvol && !fmr2->mute) {
c32a9d71	268	mutex_lock(&fmr2->lock);
34ab962d	269	fmr2_setfreq(fmr2);
c32a9d71	270	mutex_unlock(&fmr2->lock);
34ab962d DL	271	}
	272	return 0;
	273	}
acda0e71	274
34ab962d DL	275	static int vidioc_g_frequency(struct file file, void priv,
	276	struct v4l2_frequency *f)
	277	{
c32a9d71	278	struct fmr2 *fmr2 = video_drvdata(file);
acda0e71	279
34ab962d DL	280	f->type = V4L2_TUNER_RADIO;
	281	f->frequency = fmr2->curfreq;
	282	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
	283	f->frequency /= 1000;
	284	return 0;
	285	}
acda0e71	286
34ab962d DL	287	static int vidioc_queryctrl(struct file file, void priv,
	288	struct v4l2_queryctrl *qc)
	289	{
c32a9d71	290	struct fmr2 *fmr2 = video_drvdata(file);
acda0e71	291
c32a9d71 HV	292	switch (qc->id) {
	293	case V4L2_CID_AUDIO_MUTE:
	294	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	295	case V4L2_CID_AUDIO_VOLUME:
	296	/* Only card_type == 11 implements volume */
	297	if (fmr2->card_type == 11)
	298	return v4l2_ctrl_query_fill(qc, 0, 15, 1, 0);
	299	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
34ab962d DL	300	}
	301	return -EINVAL;
	302	}
	303
	304	static int vidioc_g_ctrl(struct file file, void priv,
	305	struct v4l2_control *ctrl)
	306	{
c32a9d71	307	struct fmr2 *fmr2 = video_drvdata(file);
34ab962d DL	308
	309	switch (ctrl->id) {
	310	case V4L2_CID_AUDIO_MUTE:
	311	ctrl->value = fmr2->mute;
	312	return 0;
	313	case V4L2_CID_AUDIO_VOLUME:
	314	ctrl->value = fmr2->curvol;
	315	return 0;
	316	}
	317	return -EINVAL;
	318	}
	319
	320	static int vidioc_s_ctrl(struct file file, void priv,
	321	struct v4l2_control *ctrl)
	322	{
c32a9d71	323	struct fmr2 *fmr2 = video_drvdata(file);
34ab962d DL	324
	325	switch (ctrl->id) {
	326	case V4L2_CID_AUDIO_MUTE:
	327	fmr2->mute = ctrl->value;
34ab962d DL	328	break;
34ab962d DL	329	case V4L2_CID_AUDIO_VOLUME:
c32a9d71	330	fmr2->curvol = ctrl->value;
34ab962d DL	331	break;
	332	default:
	333	return -EINVAL;
	334	}
	335
1da177e4	336	#ifdef DEBUG
34ab962d DL	337	if (fmr2->curvol && !fmr2->mute)
	338	printk(KERN_DEBUG "unmute\n");
	339	else
	340	printk(KERN_DEBUG "mute\n");
1da177e4	341	#endif
acda0e71	342
c32a9d71	343	mutex_lock(&fmr2->lock);
34ab962d DL	344	if (fmr2->curvol && !fmr2->mute) {
34ab962d DL	345	fmr2_setvolume(fmr2);
b2cb200f	346	/* Set frequency and unmute card */
34ab962d DL	347	fmr2_setfreq(fmr2);
34ab962d DL	348	} else
c32a9d71 HV	349	fmr2_mute(fmr2->io);
c32a9d71 HV	350	mutex_unlock(&fmr2->lock);
34ab962d DL	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;
1da177e4 LT	358	}
1da177e4 LT	359
34ab962d DL	360	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
34ab962d DL	361	{
c32a9d71	362	return i ? -EINVAL : 0;
34ab962d DL	363	}
34ab962d DL	364
c32a9d71	365	static int vidioc_g_audio(struct file file, void priv,
34ab962d DL	366	struct v4l2_audio *a)
34ab962d DL	367	{
c32a9d71 HV	368	a->index = 0;
	369	strlcpy(a->name, "Radio", sizeof(a->name));
	370	a->capability = V4L2_AUDCAP_STEREO;
34ab962d	371	return 0;
1da177e4 LT	372	}
1da177e4 LT	373
c32a9d71 HV	374	static int vidioc_s_audio(struct file file, void priv,
	375	struct v4l2_audio *a)
	376	{
	377	return a->index ? -EINVAL : 0;
	378	}
1da177e4	379
bec43661	380	static const struct v4l2_file_operations fmr2_fops = {
1da177e4	381	.owner = THIS_MODULE,
34ab962d	382	.ioctl = video_ioctl2,
1da177e4 LT	383	};
1da177e4 LT	384
a399810c	385	static const struct v4l2_ioctl_ops fmr2_ioctl_ops = {
34ab962d DL	386	.vidioc_querycap = vidioc_querycap,
	387	.vidioc_g_tuner = vidioc_g_tuner,
	388	.vidioc_s_tuner = vidioc_s_tuner,
	389	.vidioc_g_audio = vidioc_g_audio,
	390	.vidioc_s_audio = vidioc_s_audio,
	391	.vidioc_g_input = vidioc_g_input,
	392	.vidioc_s_input = vidioc_s_input,
	393	.vidioc_g_frequency = vidioc_g_frequency,
	394	.vidioc_s_frequency = vidioc_s_frequency,
	395	.vidioc_queryctrl = vidioc_queryctrl,
	396	.vidioc_g_ctrl = vidioc_g_ctrl,
	397	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	398	};
	399
	400	static int __init fmr2_init(void)
	401	{
c32a9d71 HV	402	struct fmr2 *fmr2 = &fmr2_card;
	403	struct v4l2_device *v4l2_dev = &fmr2->v4l2_dev;
	404	int res;
	405
	406	strlcpy(v4l2_dev->name, "sf16fmr2", sizeof(v4l2_dev->name));
	407	fmr2->io = io;
	408	fmr2->stereo = 1;
	409	fmr2->flags = V4L2_TUNER_CAP_LOW;
	410	mutex_init(&fmr2->lock);
	411
	412	if (!request_region(fmr2->io, 2, "sf16fmr2")) {
	413	v4l2_err(v4l2_dev, "request_region failed!\n");
1da177e4 LT	414	return -EBUSY;
	415	}
	416
c32a9d71 HV	417	res = v4l2_device_register(NULL, v4l2_dev);
	418	if (res < 0) {
	419	release_region(fmr2->io, 2);
	420	v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
	421	return res;
1da177e4 LT	422	}
1da177e4 LT	423
c32a9d71 HV	424	strlcpy(fmr2->vdev.name, v4l2_dev->name, sizeof(fmr2->vdev.name));
	425	fmr2->vdev.v4l2_dev = v4l2_dev;
	426	fmr2->vdev.fops = &fmr2_fops;
	427	fmr2->vdev.ioctl_ops = &fmr2_ioctl_ops;
	428	fmr2->vdev.release = video_device_release_empty;
	429	video_set_drvdata(&fmr2->vdev, fmr2);
b2cb200f	430
c32a9d71 HV	431	if (video_register_device(&fmr2->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
	432	v4l2_device_unregister(v4l2_dev);
	433	release_region(fmr2->io, 2);
	434	return -EINVAL;
	435	}
b2cb200f	436
c32a9d71 HV	437	v4l2_info(v4l2_dev, "SF16FMR2 radio card driver at 0x%x.\n", fmr2->io);
	438	/* mute card - prevents noisy bootups */
	439	mutex_lock(&fmr2->lock);
	440	fmr2_mute(fmr2->io);
	441	fmr2_product_info(fmr2);
	442	mutex_unlock(&fmr2->lock);
	443	debug_print((KERN_DEBUG "card_type %d\n", fmr2->card_type));
1da177e4 LT	444	return 0;
	445	}
	446
c32a9d71	447	static void __exit fmr2_exit(void)
1da177e4	448	{
c32a9d71 HV	449	struct fmr2 *fmr2 = &fmr2_card;
	450
	451	video_unregister_device(&fmr2->vdev);
	452	v4l2_device_unregister(&fmr2->v4l2_dev);
	453	release_region(fmr2->io, 2);
1da177e4 LT	454	}
	455
	456	module_init(fmr2_init);
c32a9d71	457	module_exit(fmr2_exit);
1da177e4 LT	458
	459	#ifndef MODULE
	460
	461	static int __init fmr2_setup_io(char *str)
	462	{
	463	get_option(&str, &io);
	464	return 1;
	465	}
	466
	467	__setup("sf16fmr2=", fmr2_setup_io);
	468
	469	#endif