[deliverable/linux.git] / drivers / media / radio / radio-sf16fmi.c

/* SF16-FMI and SF16-FMP radio driver for Linux radio support
 * heavily based on rtrack driver...
 * (c) 1997 M. Kirkwood
 * (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz
 *
 * Fitted to new interface by Alan Cox <alan@lxorguk.ukuu.org.uk>
 * Made working and cleaned up functions <mikael.hedin@irf.se>
 * Support for ISAPnP by Ladislav Michl <ladis@psi.cz>
 *
 * 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
 *  control on SB-part of SF16-FMI/SF16-FMP
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 */

#include <linux/kernel.h>	/* __setup			*/
#include <linux/module.h>	/* Modules 			*/
#include <linux/init.h>		/* Initdata			*/
#include <linux/ioport.h>	/* request_region		*/
#include <linux/delay.h>	/* udelay			*/
#include <linux/isapnp.h>
#include <linux/mutex.h>
#include <linux/videodev2.h>	/* kernel radio structs		*/
#include <linux/io.h>		/* outb, outb_p			*/
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>

MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
MODULE_DESCRIPTION("A driver for the SF16-FMI and SF16-FMP radio.");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.0.3");

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

module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the SF16-FMI or SF16-FMP card (0x284 or 0x384)");
module_param(radio_nr, int, 0);

struct fmi
{
	struct v4l2_device v4l2_dev;
	struct video_device vdev;
	int io;
	bool mute;
	unsigned long curfreq; /* freq in kHz */
	struct mutex lock;
};

static struct fmi fmi_card;
static struct pnp_dev *dev;
bool pnp_attached;

/* freq is in 1/16 kHz to internal number, hw precision is 50 kHz */
/* It is only useful to give freq in interval of 800 (=0.05Mhz),
 * other bits will be truncated, e.g 92.7400016 -> 92.7, but
 * 92.7400017 -> 92.75
 */
#define RSF16_ENCODE(x)	((x) / 800 + 214)
#define RSF16_MINFREQ (87 * 16000)
#define RSF16_MAXFREQ (108 * 16000)

static void outbits(int bits, unsigned int data, int io)
{
	while (bits--) {
		if (data & 1) {
			outb(5, io);
			udelay(6);
			outb(7, io);
			udelay(6);
		} else {
			outb(1, io);
			udelay(6);
			outb(3, io);
			udelay(6);
		}
		data >>= 1;
	}
}

static inline void fmi_mute(struct fmi *fmi)
{
	mutex_lock(&fmi->lock);
	outb(0x00, fmi->io);
	mutex_unlock(&fmi->lock);
}

static inline void fmi_unmute(struct fmi *fmi)
{
	mutex_lock(&fmi->lock);
	outb(0x08, fmi->io);
	mutex_unlock(&fmi->lock);
}

static inline int fmi_setfreq(struct fmi *fmi, unsigned long freq)
{
	mutex_lock(&fmi->lock);
	fmi->curfreq = freq;

	outbits(16, RSF16_ENCODE(freq), fmi->io);
	outbits(8, 0xC0, fmi->io);
	msleep(143);		/* was schedule_timeout(HZ/7) */
	mutex_unlock(&fmi->lock);
	if (!fmi->mute)
		fmi_unmute(fmi);
	return 0;
}

static inline int fmi_getsigstr(struct fmi *fmi)
{
	int val;
	int res;

	mutex_lock(&fmi->lock);
	val = fmi->mute ? 0x00 : 0x08;	/* mute/unmute */
	outb(val, fmi->io);
	outb(val | 0x10, fmi->io);
	msleep(143); 		/* was schedule_timeout(HZ/7) */
	res = (int)inb(fmi->io + 1);
	outb(val, fmi->io);

	mutex_unlock(&fmi->lock);
	return (res & 2) ? 0 : 0xFFFF;
}

static int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-sf16fmi", sizeof(v->driver));
	strlcpy(v->card, "SF16-FMx radio", sizeof(v->card));
	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
	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 fmi *fmi = video_drvdata(file);

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

	strlcpy(v->name, "FM", sizeof(v->name));
	v->type = V4L2_TUNER_RADIO;
	v->rangelow = RSF16_MINFREQ;
	v->rangehigh = RSF16_MAXFREQ;
	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
	v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW;
	v->audmode = V4L2_TUNER_MODE_STEREO;
	v->signal = fmi_getsigstr(fmi);
	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 fmi *fmi = video_drvdata(file);

	if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
		return -EINVAL;
	if (f->frequency < RSF16_MINFREQ ||
			f->frequency > RSF16_MAXFREQ)
		return -EINVAL;
	/* rounding in steps of 800 to match the freq
	   that will be used */
	fmi_setfreq(fmi, (f->frequency / 800) * 800);
	return 0;
}

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

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

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

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

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

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->value)
			fmi_mute(fmi);
		else
			fmi_unmute(fmi);
		fmi->mute = ctrl->value;
		return 0;
	}
	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 fmi_fops = {
	.owner		= THIS_MODULE,
	.unlocked_ioctl	= video_ioctl2,
};

static const struct v4l2_ioctl_ops fmi_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,
};

/* ladis: this is my card. does any other types exist? */
static struct isapnp_device_id id_table[] __devinitdata = {
	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
		ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0},
	{	ISAPNP_CARD_END, },
};

MODULE_DEVICE_TABLE(isapnp, id_table);

static int __init isapnp_fmi_probe(void)
{
	int i = 0;

	while (id_table[i].card_vendor != 0 && dev == NULL) {
		dev = pnp_find_dev(NULL, id_table[i].vendor,
				   id_table[i].function, NULL);
		i++;
	}

	if (!dev)
		return -ENODEV;
	if (pnp_device_attach(dev) < 0)
		return -EAGAIN;
	if (pnp_activate_dev(dev) < 0) {
		printk(KERN_ERR "radio-sf16fmi: PnP configure failed (out of resources?)\n");
		pnp_device_detach(dev);
		return -ENOMEM;
	}
	if (!pnp_port_valid(dev, 0)) {
		pnp_device_detach(dev);
		return -ENODEV;
	}

	i = pnp_port_start(dev, 0);
	printk(KERN_INFO "radio-sf16fmi: PnP reports card at %#x\n", i);

	return i;
}

static int __init fmi_init(void)
{
	struct fmi *fmi = &fmi_card;
	struct v4l2_device *v4l2_dev = &fmi->v4l2_dev;
	int res, i;
	int probe_ports[] = { 0, 0x284, 0x384 };

	if (io < 0) {
		for (i = 0; i < ARRAY_SIZE(probe_ports); i++) {
			io = probe_ports[i];
			if (io == 0) {
				io = isapnp_fmi_probe();
				if (io < 0)
					continue;
				pnp_attached = 1;
			}
			if (!request_region(io, 2, "radio-sf16fmi")) {
				if (pnp_attached)
					pnp_device_detach(dev);
				io = -1;
				continue;
			}
			if (pnp_attached ||
			    ((inb(io) & 0xf9) == 0xf9 && (inb(io) & 0x4) == 0))
				break;
			release_region(io, 2);
			io = -1;
		}
	} else {
		if (!request_region(io, 2, "radio-sf16fmi")) {
			printk(KERN_ERR "radio-sf16fmi: port %#x already in use\n", io);
			return -EBUSY;
		}
		if (inb(io) == 0xff) {
			printk(KERN_ERR "radio-sf16fmi: card not present at %#x\n", io);
			release_region(io, 2);
			return -ENODEV;
		}
	}
	if (io < 0) {
		printk(KERN_ERR "radio-sf16fmi: no cards found\n");
		return -ENODEV;
	}

	strlcpy(v4l2_dev->name, "sf16fmi", sizeof(v4l2_dev->name));
	fmi->io = io;

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

	strlcpy(fmi->vdev.name, v4l2_dev->name, sizeof(fmi->vdev.name));
	fmi->vdev.v4l2_dev = v4l2_dev;
	fmi->vdev.fops = &fmi_fops;
	fmi->vdev.ioctl_ops = &fmi_ioctl_ops;
	fmi->vdev.release = video_device_release_empty;
	video_set_drvdata(&fmi->vdev, fmi);

	mutex_init(&fmi->lock);

	/* mute card - prevents noisy bootups */
	fmi_mute(fmi);

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

	v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io);
	return 0;
}

static void __exit fmi_exit(void)
{
	struct fmi *fmi = &fmi_card;

	video_unregister_device(&fmi->vdev);
	v4l2_device_unregister(&fmi->v4l2_dev);
	release_region(fmi->io, 2);
	if (dev && pnp_attached)
		pnp_device_detach(dev);
}

module_init(fmi_init);
module_exit(fmi_exit);
Commit	Line	Data
4b830374	1	/* SF16-FMI and SF16-FMP radio driver for Linux radio support
1da177e4 LT	2	* heavily based on rtrack driver...
	3	* (c) 1997 M. Kirkwood
	4	* (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz
	5	*
d9b01449	6	* Fitted to new interface by Alan Cox <alan@lxorguk.ukuu.org.uk>
1da177e4 LT	7	* Made working and cleaned up functions <mikael.hedin@irf.se>
	8	* Support for ISAPnP by Ladislav Michl <ladis@psi.cz>
	9	*
	10	* Notes on the hardware
	11	*
	12	* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
	13	* No volume control - only mute/unmute - you have to use line volume
4b830374	14	* control on SB-part of SF16-FMI/SF16-FMP
4286c6f6	15	*
a2ef73af	16	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	17	*/
	18
	19	#include <linux/kernel.h> /* __setup */
	20	#include <linux/module.h> /* Modules */
	21	#include <linux/init.h> /* Initdata */
fb911ee8	22	#include <linux/ioport.h> /* request_region */
1da177e4	23	#include <linux/delay.h> /* udelay */
1da177e4	24	#include <linux/isapnp.h>
3593cab5	25	#include <linux/mutex.h>
c41269fd HV	26	#include <linux/videodev2.h> /* kernel radio structs */
c41269fd HV	27	#include <linux/io.h> /* outb, outb_p */
c41269fd HV	28	#include <media/v4l2-device.h>
c41269fd HV	29	#include <media/v4l2-ioctl.h>
1da177e4	30
c41269fd	31	MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
4b830374	32	MODULE_DESCRIPTION("A driver for the SF16-FMI and SF16-FMP radio.");
c41269fd	33	MODULE_LICENSE("GPL");
29834c1a	34	MODULE_VERSION("0.0.3");
a2ef73af	35
c41269fd HV	36	static int io = -1;
	37	static int radio_nr = -1;
	38
	39	module_param(io, int, 0);
4b830374	40	MODULE_PARM_DESC(io, "I/O address of the SF16-FMI or SF16-FMP card (0x284 or 0x384)");
c41269fd HV	41	module_param(radio_nr, int, 0);
c41269fd HV	42
c41269fd	43	struct fmi
1da177e4	44	{
c41269fd HV	45	struct v4l2_device v4l2_dev;
	46	struct video_device vdev;
	47	int io;
4b830374	48	bool mute;
4286c6f6	49	unsigned long curfreq; /* freq in kHz */
c41269fd	50	struct mutex lock;
1da177e4 LT	51	};
1da177e4 LT	52
c41269fd HV	53	static struct fmi fmi_card;
c41269fd HV	54	static struct pnp_dev *dev;
67cabf50	55	bool pnp_attached;
1da177e4 LT	56
1da177e4 LT	57	/* freq is in 1/16 kHz to internal number, hw precision is 50 kHz */
1d80db56	58	/* It is only useful to give freq in interval of 800 (=0.05Mhz),
4286c6f6	59	* other bits will be truncated, e.g 92.7400016 -> 92.7, but
1da177e4 LT	60	* 92.7400017 -> 92.75
1da177e4 LT	61	*/
c41269fd HV	62	#define RSF16_ENCODE(x) ((x) / 800 + 214)
	63	#define RSF16_MINFREQ (87 * 16000)
	64	#define RSF16_MAXFREQ (108 * 16000)
1da177e4	65
c41269fd	66	static void outbits(int bits, unsigned int data, int io)
1da177e4	67	{
c41269fd HV	68	while (bits--) {
	69	if (data & 1) {
	70	outb(5, io);
1da177e4	71	udelay(6);
c41269fd	72	outb(7, io);
1da177e4 LT	73	udelay(6);
1da177e4 LT	74	} else {
c41269fd	75	outb(1, io);
1da177e4	76	udelay(6);
c41269fd	77	outb(3, io);
1da177e4 LT	78	udelay(6);
1da177e4 LT	79	}
c41269fd	80	data >>= 1;
1da177e4 LT	81	}
	82	}
	83
c41269fd	84	static inline void fmi_mute(struct fmi *fmi)
1da177e4	85	{
c41269fd HV	86	mutex_lock(&fmi->lock);
	87	outb(0x00, fmi->io);
	88	mutex_unlock(&fmi->lock);
1da177e4 LT	89	}
1da177e4 LT	90
c41269fd	91	static inline void fmi_unmute(struct fmi *fmi)
1da177e4	92	{
c41269fd HV	93	mutex_lock(&fmi->lock);
	94	outb(0x08, fmi->io);
	95	mutex_unlock(&fmi->lock);
1da177e4 LT	96	}
1da177e4 LT	97
c41269fd	98	static inline int fmi_setfreq(struct fmi *fmi, unsigned long freq)
1da177e4	99	{
c41269fd HV	100	mutex_lock(&fmi->lock);
c41269fd HV	101	fmi->curfreq = freq;
1da177e4	102
c41269fd HV	103	outbits(16, RSF16_ENCODE(freq), fmi->io);
c41269fd HV	104	outbits(8, 0xC0, fmi->io);
1da177e4	105	msleep(143); /* was schedule_timeout(HZ/7) */
c41269fd	106	mutex_unlock(&fmi->lock);
4b830374	107	if (!fmi->mute)
c41269fd	108	fmi_unmute(fmi);
1da177e4 LT	109	return 0;
	110	}
	111
c41269fd	112	static inline int fmi_getsigstr(struct fmi *fmi)
1da177e4 LT	113	{
	114	int val;
	115	int res;
4286c6f6	116
c41269fd	117	mutex_lock(&fmi->lock);
4b830374	118	val = fmi->mute ? 0x00 : 0x08; /* mute/unmute */
c41269fd HV	119	outb(val, fmi->io);
c41269fd HV	120	outb(val \| 0x10, fmi->io);
1da177e4	121	msleep(143); /* was schedule_timeout(HZ/7) */
c41269fd HV	122	res = (int)inb(fmi->io + 1);
c41269fd HV	123	outb(val, fmi->io);
4286c6f6	124
c41269fd	125	mutex_unlock(&fmi->lock);
1da177e4 LT	126	return (res & 2) ? 0 : 0xFFFF;
	127	}
	128
c123b867 DL	129	static int vidioc_querycap(struct file file, void priv,
c123b867 DL	130	struct v4l2_capability *v)
1da177e4	131	{
c123b867 DL	132	strlcpy(v->driver, "radio-sf16fmi", sizeof(v->driver));
c123b867 DL	133	strlcpy(v->card, "SF16-FMx radio", sizeof(v->card));
c41269fd	134	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
c41269fd	135	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
c123b867 DL	136	return 0;
	137	}
	138
	139	static int vidioc_g_tuner(struct file file, void priv,
	140	struct v4l2_tuner *v)
	141	{
c41269fd	142	struct fmi *fmi = video_drvdata(file);
c123b867 DL	143
	144	if (v->index > 0)
	145	return -EINVAL;
	146
c41269fd	147	strlcpy(v->name, "FM", sizeof(v->name));
c123b867	148	v->type = V4L2_TUNER_RADIO;
1d80db56 HV	149	v->rangelow = RSF16_MINFREQ;
1d80db56 HV	150	v->rangehigh = RSF16_MAXFREQ;
dc47b778	151	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
38092a44	152	v->capability = V4L2_TUNER_CAP_STEREO \| V4L2_TUNER_CAP_LOW;
c123b867 DL	153	v->audmode = V4L2_TUNER_MODE_STEREO;
	154	v->signal = fmi_getsigstr(fmi);
	155	return 0;
	156	}
4286c6f6	157
c123b867 DL	158	static int vidioc_s_tuner(struct file file, void priv,
	159	struct v4l2_tuner *v)
	160	{
c41269fd	161	return v->index ? -EINVAL : 0;
c123b867	162	}
a2ef73af	163
c123b867 DL	164	static int vidioc_s_frequency(struct file file, void priv,
	165	struct v4l2_frequency *f)
	166	{
c41269fd	167	struct fmi *fmi = video_drvdata(file);
c123b867	168
a3a9e287 HV	169	if (f->tuner != 0 \|\| f->type != V4L2_TUNER_RADIO)
a3a9e287 HV	170	return -EINVAL;
c123b867	171	if (f->frequency < RSF16_MINFREQ \|\|
c41269fd	172	f->frequency > RSF16_MAXFREQ)
c123b867	173	return -EINVAL;
c41269fd HV	174	/* rounding in steps of 800 to match the freq
	175	that will be used */
	176	fmi_setfreq(fmi, (f->frequency / 800) * 800);
c123b867 DL	177	return 0;
c123b867 DL	178	}
a2ef73af	179
c123b867 DL	180	static int vidioc_g_frequency(struct file file, void priv,
	181	struct v4l2_frequency *f)
	182	{
c41269fd	183	struct fmi *fmi = video_drvdata(file);
a2ef73af	184
a3a9e287 HV	185	if (f->tuner != 0)
a3a9e287 HV	186	return -EINVAL;
c123b867 DL	187	f->type = V4L2_TUNER_RADIO;
c123b867 DL	188	f->frequency = fmi->curfreq;
c123b867 DL	189	return 0;
c123b867 DL	190	}
a2ef73af	191
c123b867 DL	192	static int vidioc_queryctrl(struct file file, void priv,
	193	struct v4l2_queryctrl *qc)
	194	{
c41269fd HV	195	switch (qc->id) {
	196	case V4L2_CID_AUDIO_MUTE:
	197	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
c123b867 DL	198	}
	199	return -EINVAL;
	200	}
a2ef73af	201
c123b867 DL	202	static int vidioc_g_ctrl(struct file file, void priv,
	203	struct v4l2_control *ctrl)
	204	{
c41269fd	205	struct fmi *fmi = video_drvdata(file);
a2ef73af	206
c123b867 DL	207	switch (ctrl->id) {
c123b867 DL	208	case V4L2_CID_AUDIO_MUTE:
4b830374	209	ctrl->value = fmi->mute;
c123b867	210	return 0;
1da177e4	211	}
c123b867 DL	212	return -EINVAL;
	213	}
	214
	215	static int vidioc_s_ctrl(struct file file, void priv,
	216	struct v4l2_control *ctrl)
	217	{
c41269fd	218	struct fmi *fmi = video_drvdata(file);
c123b867 DL	219
	220	switch (ctrl->id) {
	221	case V4L2_CID_AUDIO_MUTE:
	222	if (ctrl->value)
c41269fd	223	fmi_mute(fmi);
c123b867	224	else
c41269fd	225	fmi_unmute(fmi);
4b830374	226	fmi->mute = ctrl->value;
c123b867 DL	227	return 0;
	228	}
	229	return -EINVAL;
	230	}
	231
c123b867	232	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
1da177e4	233	{
c123b867 DL	234	*i = 0;
	235	return 0;
	236	}
	237
	238	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	239	{
c41269fd	240	return i ? -EINVAL : 0;
c123b867 DL	241	}
c123b867 DL	242
c41269fd	243	static int vidioc_g_audio(struct file file, void priv,
c123b867 DL	244	struct v4l2_audio *a)
c123b867 DL	245	{
c41269fd HV	246	a->index = 0;
	247	strlcpy(a->name, "Radio", sizeof(a->name));
	248	a->capability = V4L2_AUDCAP_STEREO;
c123b867	249	return 0;
1da177e4 LT	250	}
1da177e4 LT	251
c41269fd HV	252	static int vidioc_s_audio(struct file file, void priv,
	253	struct v4l2_audio *a)
	254	{
	255	return a->index ? -EINVAL : 0;
	256	}
1da177e4	257
bec43661	258	static const struct v4l2_file_operations fmi_fops = {
1da177e4	259	.owner = THIS_MODULE,
32958fdd	260	.unlocked_ioctl = video_ioctl2,
1da177e4 LT	261	};
1da177e4 LT	262
a399810c	263	static const struct v4l2_ioctl_ops fmi_ioctl_ops = {
c123b867 DL	264	.vidioc_querycap = vidioc_querycap,
	265	.vidioc_g_tuner = vidioc_g_tuner,
	266	.vidioc_s_tuner = vidioc_s_tuner,
	267	.vidioc_g_audio = vidioc_g_audio,
	268	.vidioc_s_audio = vidioc_s_audio,
	269	.vidioc_g_input = vidioc_g_input,
	270	.vidioc_s_input = vidioc_s_input,
	271	.vidioc_g_frequency = vidioc_g_frequency,
	272	.vidioc_s_frequency = vidioc_s_frequency,
	273	.vidioc_queryctrl = vidioc_queryctrl,
	274	.vidioc_g_ctrl = vidioc_g_ctrl,
	275	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	276	};
	277
	278	/* ladis: this is my card. does any other types exist? */
	279	static struct isapnp_device_id id_table[] __devinitdata = {
	280	{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
	281	ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0},
	282	{ ISAPNP_CARD_END, },
	283	};
	284
	285	MODULE_DEVICE_TABLE(isapnp, id_table);
	286
a999337b	287	static int __init isapnp_fmi_probe(void)
1da177e4 LT	288	{
	289	int i = 0;
	290
	291	while (id_table[i].card_vendor != 0 && dev == NULL) {
	292	dev = pnp_find_dev(NULL, id_table[i].vendor,
	293	id_table[i].function, NULL);
	294	i++;
	295	}
	296
	297	if (!dev)
	298	return -ENODEV;
	299	if (pnp_device_attach(dev) < 0)
	300	return -EAGAIN;
	301	if (pnp_activate_dev(dev) < 0) {
c41269fd	302	printk(KERN_ERR "radio-sf16fmi: PnP configure failed (out of resources?)\n");
1da177e4 LT	303	pnp_device_detach(dev);
	304	return -ENOMEM;
	305	}
	306	if (!pnp_port_valid(dev, 0)) {
	307	pnp_device_detach(dev);
	308	return -ENODEV;
	309	}
	310
	311	i = pnp_port_start(dev, 0);
c41269fd	312	printk(KERN_INFO "radio-sf16fmi: PnP reports card at %#x\n", i);
1da177e4 LT	313
	314	return i;
	315	}
	316
	317	static int __init fmi_init(void)
	318	{
c41269fd HV	319	struct fmi *fmi = &fmi_card;
c41269fd HV	320	struct v4l2_device *v4l2_dev = &fmi->v4l2_dev;
67cabf50 OZ	321	int res, i;
	322	int probe_ports[] = { 0, 0x284, 0x384 };
	323
	324	if (io < 0) {
	325	for (i = 0; i < ARRAY_SIZE(probe_ports); i++) {
	326	io = probe_ports[i];
	327	if (io == 0) {
	328	io = isapnp_fmi_probe();
	329	if (io < 0)
	330	continue;
	331	pnp_attached = 1;
	332	}
	333	if (!request_region(io, 2, "radio-sf16fmi")) {
	334	if (pnp_attached)
	335	pnp_device_detach(dev);
	336	io = -1;
	337	continue;
	338	}
	339	if (pnp_attached \|\|
	340	((inb(io) & 0xf9) == 0xf9 && (inb(io) & 0x4) == 0))
	341	break;
	342	release_region(io, 2);
	343	io = -1;
	344	}
	345	} else {
	346	if (!request_region(io, 2, "radio-sf16fmi")) {
	347	printk(KERN_ERR "radio-sf16fmi: port %#x already in use\n", io);
	348	return -EBUSY;
	349	}
	350	if (inb(io) == 0xff) {
	351	printk(KERN_ERR "radio-sf16fmi: card not present at %#x\n", io);
	352	release_region(io, 2);
	353	return -ENODEV;
	354	}
	355	}
	356	if (io < 0) {
	357	printk(KERN_ERR "radio-sf16fmi: no cards found\n");
	358	return -ENODEV;
	359	}
c41269fd	360
c41269fd HV	361	strlcpy(v4l2_dev->name, "sf16fmi", sizeof(v4l2_dev->name));
c41269fd HV	362	fmi->io = io;
1da177e4	363
c41269fd HV	364	res = v4l2_device_register(NULL, v4l2_dev);
	365	if (res < 0) {
	366	release_region(fmi->io, 2);
67cabf50 OZ	367	if (pnp_attached)
67cabf50 OZ	368	pnp_device_detach(dev);
c41269fd HV	369	v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
	370	return res;
	371	}
	372
c41269fd HV	373	strlcpy(fmi->vdev.name, v4l2_dev->name, sizeof(fmi->vdev.name));
	374	fmi->vdev.v4l2_dev = v4l2_dev;
	375	fmi->vdev.fops = &fmi_fops;
	376	fmi->vdev.ioctl_ops = &fmi_ioctl_ops;
	377	fmi->vdev.release = video_device_release_empty;
	378	video_set_drvdata(&fmi->vdev, fmi);
4286c6f6	379
c41269fd	380	mutex_init(&fmi->lock);
4286c6f6	381
32958fdd HV	382	/* mute card - prevents noisy bootups */
	383	fmi_mute(fmi);
	384
c41269fd HV	385	if (video_register_device(&fmi->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
	386	v4l2_device_unregister(v4l2_dev);
	387	release_region(fmi->io, 2);
67cabf50 OZ	388	if (pnp_attached)
67cabf50 OZ	389	pnp_device_detach(dev);
1da177e4 LT	390	return -EINVAL;
1da177e4 LT	391	}
4286c6f6	392
c41269fd	393	v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io);
1da177e4 LT	394	return 0;
	395	}
	396
c41269fd	397	static void __exit fmi_exit(void)
1da177e4	398	{
c41269fd HV	399	struct fmi *fmi = &fmi_card;
	400
	401	video_unregister_device(&fmi->vdev);
	402	v4l2_device_unregister(&fmi->v4l2_dev);
	403	release_region(fmi->io, 2);
67cabf50	404	if (dev && pnp_attached)
1da177e4 LT	405	pnp_device_detach(dev);
	406	}
	407
	408	module_init(fmi_init);
c41269fd	409	module_exit(fmi_exit);