[net-next-2.6.git] / drivers / media / radio / radio-maxiradio.c

/*
 * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
 * (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
 *
 * Based in the radio Maestro PCI driver. Actually it uses the same chip
 * for radio but different pci controller.
 *
 * I didn't have any specs I reversed engineered the protocol from
 * the windows driver (radio.dll).
 *
 * The card uses the TEA5757 chip that includes a search function but it
 * is useless as I haven't found any way to read back the frequency. If
 * anybody does please mail me.
 *
 * For the pdf file see:
 * http://www.semiconductors.philips.com/pip/TEA5757H/V1
 *
 *
 * CHANGES:
 *   0.75b
 *     - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
 *
 *   0.75      Sun Feb  4 22:51:27 EET 2001
 *     - tiding up
 *     - removed support for multiple devices as it didn't work anyway
 *
 * BUGS:
 *   - card unmutes if you change frequency
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 */


#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/mutex.h>

#include <linux/pci.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>

#define DRIVER_VERSION	"0.76"

#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#define RADIO_VERSION KERNEL_VERSION(0,7,6)

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,
	}
};

#ifndef PCI_VENDOR_ID_GUILLEMOT
#define PCI_VENDOR_ID_GUILLEMOT 0x5046
#endif

#ifndef PCI_DEVICE_ID_GUILLEMOT
#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
#endif


/* TEA5757 pin mappings */
static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;

static int radio_nr = -1;
module_param(radio_nr, int, 0);


#define FREQ_LO		 50*16000
#define FREQ_HI		150*16000

#define FREQ_IF         171200 /* 10.7*16000   */
#define FREQ_STEP       200    /* 12.5*16      */

#define FREQ2BITS(x)	((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
			/(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */

#define BITS2FREQ(x)	((x) * FREQ_STEP - FREQ_IF)


static int radio_ioctl(struct inode *inode, struct file *file,
		       unsigned int cmd, unsigned long arg);

static const struct file_operations maxiradio_fops = {
	.owner		= THIS_MODULE,
	.open           = video_exclusive_open,
	.release        = video_exclusive_release,
	.ioctl		= radio_ioctl,
	.compat_ioctl	= v4l_compat_ioctl32,
	.llseek         = no_llseek,
};
static struct video_device maxiradio_radio =
{
	.owner		= THIS_MODULE,
	.name		= "Maxi Radio FM2000 radio",
	.type		= VID_TYPE_TUNER,
	.fops           = &maxiradio_fops,
};

static struct radio_device
{
	__u16	io,	/* base of radio io */
		muted,	/* VIDEO_AUDIO_MUTE */
		stereo,	/* VIDEO_TUNER_STEREO_ON */
		tuned;	/* signal strength (0 or 0xffff) */

	unsigned long freq;

	struct mutex lock;
} radio_unit = {0, 0, 0, 0, };


static void outbit(unsigned long bit, __u16 io)
{
	if(bit != 0)
		{
			outb(  power|wren|data     ,io); udelay(4);
			outb(  power|wren|data|clk ,io); udelay(4);
			outb(  power|wren|data     ,io); udelay(4);
		}
	else
		{
			outb(  power|wren          ,io); udelay(4);
			outb(  power|wren|clk      ,io); udelay(4);
			outb(  power|wren          ,io); udelay(4);
		}
}

static void turn_power(__u16 io, int p)
{
	if(p != 0) outb(power, io); else outb(0,io);
}


static void set_freq(__u16 io, __u32 data)
{
	unsigned long int si;
	int bl;

	/* TEA5757 shift register bits (see pdf) */

	outbit(0,io); // 24  search
	outbit(1,io); // 23  search up/down

	outbit(0,io); // 22  stereo/mono

	outbit(0,io); // 21  band
	outbit(0,io); // 20  band (only 00=FM works I think)

	outbit(0,io); // 19  port ?
	outbit(0,io); // 18  port ?

	outbit(0,io); // 17  search level
	outbit(0,io); // 16  search level

	si = 0x8000;
	for(bl = 1; bl <= 16 ; bl++) { outbit(data & si,io); si >>=1; }

	outb(power,io);
}

static int get_stereo(__u16 io)
{
	outb(power,io); udelay(4);
	return !(inb(io) & mo_st);
}

static int get_tune(__u16 io)
{
	outb(power+clk,io); udelay(4);
	return !(inb(io) & mo_st);
}


static inline int radio_function(struct inode *inode, struct file *file,
				 unsigned int cmd, void *arg)
{
	struct video_device *dev = video_devdata(file);
	struct radio_device *card=dev->priv;

	switch(cmd) {
		case VIDIOC_QUERYCAP:
		{
			struct v4l2_capability *v = arg;
			memset(v,0,sizeof(*v));
			strlcpy(v->driver, "radio-maxiradio", sizeof (v->driver));
			strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof (v->card));
			sprintf(v->bus_info,"ISA");
			v->version = RADIO_VERSION;
			v->capabilities = V4L2_CAP_TUNER;

			return 0;
		}
		case VIDIOC_G_TUNER:
		{
			struct v4l2_tuner *v = arg;

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

			memset(v,0,sizeof(*v));
			strcpy(v->name, "FM");
			v->type = V4L2_TUNER_RADIO;

			v->rangelow=FREQ_LO;
			v->rangehigh=FREQ_HI;
			v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
			v->capability=V4L2_TUNER_CAP_LOW;
			if(get_stereo(card->io))
				v->audmode = V4L2_TUNER_MODE_STEREO;
			else
				v->audmode = V4L2_TUNER_MODE_MONO;
			v->signal=0xffff*get_tune(card->io);

			return 0;
		}
		case VIDIOC_S_TUNER:
		{
			struct v4l2_tuner *v = arg;

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

			return 0;
		}
		case VIDIOC_S_FREQUENCY:
		{
			struct v4l2_frequency *f = arg;

			if (f->frequency < FREQ_LO || f->frequency > FREQ_HI)
				return -EINVAL;

			card->freq = f->frequency;
			set_freq(card->io, FREQ2BITS(card->freq));
			msleep(125);
			return 0;
		}
		case VIDIOC_G_FREQUENCY:
		{
			struct v4l2_frequency *f = arg;

			f->type = V4L2_TUNER_RADIO;
			f->frequency = card->freq;

			return 0;
		}
		case VIDIOC_QUERYCTRL:
		{
			struct v4l2_queryctrl *qc = arg;
			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;
		}
		case VIDIOC_G_CTRL:
		{
			struct v4l2_control *ctrl= arg;

			switch (ctrl->id) {
				case V4L2_CID_AUDIO_MUTE:
					ctrl->value=card->muted;
					return (0);
			}
			return -EINVAL;
		}
		case VIDIOC_S_CTRL:
		{
			struct v4l2_control *ctrl= arg;

			switch (ctrl->id) {
				case V4L2_CID_AUDIO_MUTE:
					card->muted = ctrl->value;
					if(card->muted)
						turn_power(card->io, 0);
					else
						set_freq(card->io, FREQ2BITS(card->freq));
					return 0;
			}
			return -EINVAL;
		}

		default:
			return v4l_compat_translate_ioctl(inode,file,cmd,arg,
							  radio_function);

	}
}

static int radio_ioctl(struct inode *inode, struct file *file,
		       unsigned int cmd, unsigned long arg)
{
	struct video_device *dev = video_devdata(file);
	struct radio_device *card=dev->priv;
	int ret;

	mutex_lock(&card->lock);
	ret = video_usercopy(inode, file, cmd, arg, radio_function);
	mutex_unlock(&card->lock);
	return ret;
}

MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
MODULE_LICENSE("GPL");


static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	if(!request_region(pci_resource_start(pdev, 0),
			   pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
		printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n");
		goto err_out;
	}

	if (pci_enable_device(pdev))
		goto err_out_free_region;

	radio_unit.io = pci_resource_start(pdev, 0);
	mutex_init(&radio_unit.lock);
	maxiradio_radio.priv = &radio_unit;

	if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr)==-1) {
		printk("radio-maxiradio: can't register device!");
		goto err_out_free_region;
	}

	printk(KERN_INFO "radio-maxiradio: version "
	       DRIVER_VERSION
	       " time "
	       __TIME__ "  "
	       __DATE__
	       "\n");

	printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
	       radio_unit.io);
	return 0;

err_out_free_region:
	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
err_out:
	return -ENODEV;
}

static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
{
	video_unregister_device(&maxiradio_radio);
	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
}

static struct pci_device_id maxiradio_pci_tbl[] = {
	{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
		PCI_ANY_ID, PCI_ANY_ID, },
	{ 0,}
};

MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);

static struct pci_driver maxiradio_driver = {
	.name		= "radio-maxiradio",
	.id_table	= maxiradio_pci_tbl,
	.probe		= maxiradio_init_one,
	.remove		= __devexit_p(maxiradio_remove_one),
};

static int __init maxiradio_radio_init(void)
{
	return pci_register_driver(&maxiradio_driver);
}

static void __exit maxiradio_radio_exit(void)
{
	pci_unregister_driver(&maxiradio_driver);
}

module_init(maxiradio_radio_init);
module_exit(maxiradio_radio_exit);
Commit	Line	Data
4286c6f6 MCC	1	/*
4286c6f6 MCC	2	* Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
1da177e4 LT	3	* (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
	4	*
	5	* Based in the radio Maestro PCI driver. Actually it uses the same chip
	6	* for radio but different pci controller.
	7	*
	8	* I didn't have any specs I reversed engineered the protocol from
4286c6f6	9	* the windows driver (radio.dll).
1da177e4 LT	10	*
1da177e4 LT	11	* The card uses the TEA5757 chip that includes a search function but it
4286c6f6	12	* is useless as I haven't found any way to read back the frequency. If
1da177e4 LT	13	* anybody does please mail me.
	14	*
	15	* For the pdf file see:
	16	* http://www.semiconductors.philips.com/pip/TEA5757H/V1
	17	*
	18	*
	19	* CHANGES:
	20	* 0.75b
	21	* - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
	22	*
e84fef6b	23	* 0.75 Sun Feb 4 22:51:27 EET 2001
1da177e4 LT	24	* - tiding up
	25	* - removed support for multiple devices as it didn't work anyway
	26	*
4286c6f6	27	* BUGS:
1da177e4 LT	28	* - card unmutes if you change frequency
1da177e4 LT	29	*
e84fef6b	30	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	31	*/
	32
	33
	34	#include <linux/module.h>
	35	#include <linux/init.h>
	36	#include <linux/ioport.h>
	37	#include <linux/delay.h>
1da177e4 LT	38	#include <asm/io.h>
1da177e4 LT	39	#include <asm/uaccess.h>
3593cab5 IM	40	#include <linux/mutex.h>
3593cab5 IM	41
1da177e4	42	#include <linux/pci.h>
e84fef6b	43	#include <linux/videodev2.h>
5e87efa3	44	#include <media/v4l2-common.h>
1da177e4	45
e84fef6b MCC	46	#define DRIVER_VERSION "0.76"
	47
	48	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	49	#define RADIO_VERSION KERNEL_VERSION(0,7,6)
	50
	51	static struct v4l2_queryctrl radio_qctrl[] = {
	52	{
	53	.id = V4L2_CID_AUDIO_MUTE,
	54	.name = "Mute",
	55	.minimum = 0,
	56	.maximum = 1,
	57	.default_value = 1,
	58	.type = V4L2_CTRL_TYPE_BOOLEAN,
	59	}
	60	};
1da177e4 LT	61
	62	#ifndef PCI_VENDOR_ID_GUILLEMOT
	63	#define PCI_VENDOR_ID_GUILLEMOT 0x5046
	64	#endif
	65
	66	#ifndef PCI_DEVICE_ID_GUILLEMOT
	67	#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
	68	#endif
	69
	70
	71	/* TEA5757 pin mappings */
	72	static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
	73
	74	static int radio_nr = -1;
	75	module_param(radio_nr, int, 0);
	76
	77
	78	#define FREQ_LO 50*16000
	79	#define FREQ_HI 150*16000
	80
	81	#define FREQ_IF 171200 /* 10.716000 /
	82	#define FREQ_STEP 200 /* 12.516 /
	83
	84	#define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
	85	/(FREQ_STEP<<2))<<2) /* (x==fmhz161000) -> bits */
	86
	87	#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
	88
	89
	90	static int radio_ioctl(struct inode inode, struct file file,
	91	unsigned int cmd, unsigned long arg);
	92
fa027c2a	93	static const struct file_operations maxiradio_fops = {
1da177e4 LT	94	.owner = THIS_MODULE,
	95	.open = video_exclusive_open,
	96	.release = video_exclusive_release,
4286c6f6	97	.ioctl = radio_ioctl,
0d0fbf81	98	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	99	.llseek = no_llseek,
	100	};
	101	static struct video_device maxiradio_radio =
	102	{
	103	.owner = THIS_MODULE,
	104	.name = "Maxi Radio FM2000 radio",
	105	.type = VID_TYPE_TUNER,
1da177e4 LT	106	.fops = &maxiradio_fops,
	107	};
	108
	109	static struct radio_device
	110	{
	111	__u16 io, /* base of radio io */
	112	muted, /* VIDEO_AUDIO_MUTE */
4286c6f6	113	stereo, /* VIDEO_TUNER_STEREO_ON */
1da177e4	114	tuned; /* signal strength (0 or 0xffff) */
4286c6f6	115
1da177e4	116	unsigned long freq;
4286c6f6	117
3593cab5	118	struct mutex lock;
1da177e4 LT	119	} radio_unit = {0, 0, 0, 0, };
	120
	121
	122	static void outbit(unsigned long bit, __u16 io)
	123	{
	124	if(bit != 0)
	125	{
	126	outb( power\|wren\|data ,io); udelay(4);
	127	outb( power\|wren\|data\|clk ,io); udelay(4);
	128	outb( power\|wren\|data ,io); udelay(4);
	129	}
4286c6f6	130	else
1da177e4 LT	131	{
	132	outb( power\|wren ,io); udelay(4);
	133	outb( power\|wren\|clk ,io); udelay(4);
	134	outb( power\|wren ,io); udelay(4);
	135	}
	136	}
	137
	138	static void turn_power(__u16 io, int p)
	139	{
	140	if(p != 0) outb(power, io); else outb(0,io);
	141	}
	142
	143
	144	static void set_freq(__u16 io, __u32 data)
	145	{
	146	unsigned long int si;
	147	int bl;
4286c6f6	148
1da177e4 LT	149	/* TEA5757 shift register bits (see pdf) */
1da177e4 LT	150
4286c6f6	151	outbit(0,io); // 24 search
1da177e4	152	outbit(1,io); // 23 search up/down
4286c6f6	153
1da177e4 LT	154	outbit(0,io); // 22 stereo/mono
	155
	156	outbit(0,io); // 21 band
	157	outbit(0,io); // 20 band (only 00=FM works I think)
	158
	159	outbit(0,io); // 19 port ?
	160	outbit(0,io); // 18 port ?
4286c6f6	161
1da177e4 LT	162	outbit(0,io); // 17 search level
1da177e4 LT	163	outbit(0,io); // 16 search level
4286c6f6	164
1da177e4 LT	165	si = 0x8000;
1da177e4 LT	166	for(bl = 1; bl <= 16 ; bl++) { outbit(data & si,io); si >>=1; }
4286c6f6	167
1da177e4 LT	168	outb(power,io);
	169	}
	170
	171	static int get_stereo(__u16 io)
4286c6f6	172	{
1da177e4 LT	173	outb(power,io); udelay(4);
	174	return !(inb(io) & mo_st);
	175	}
	176
	177	static int get_tune(__u16 io)
4286c6f6	178	{
1da177e4 LT	179	outb(power+clk,io); udelay(4);
	180	return !(inb(io) & mo_st);
	181	}
	182
	183
77933d72	184	static inline int radio_function(struct inode inode, struct file file,
1da177e4 LT	185	unsigned int cmd, void *arg)
	186	{
	187	struct video_device *dev = video_devdata(file);
	188	struct radio_device *card=dev->priv;
	189
	190	switch(cmd) {
e84fef6b MCC	191	case VIDIOC_QUERYCAP:
	192	{
	193	struct v4l2_capability *v = arg;
1da177e4	194	memset(v,0,sizeof(*v));
e84fef6b MCC	195	strlcpy(v->driver, "radio-maxiradio", sizeof (v->driver));
	196	strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof (v->card));
	197	sprintf(v->bus_info,"ISA");
	198	v->version = RADIO_VERSION;
	199	v->capabilities = V4L2_CAP_TUNER;
	200
1da177e4 LT	201	return 0;
1da177e4 LT	202	}
e84fef6b MCC	203	case VIDIOC_G_TUNER:
	204	{
	205	struct v4l2_tuner *v = arg;
4286c6f6	206
e84fef6b	207	if (v->index > 0)
1da177e4	208	return -EINVAL;
4286c6f6	209
e84fef6b	210	memset(v,0,sizeof(*v));
1da177e4	211	strcpy(v->name, "FM");
e84fef6b MCC	212	v->type = V4L2_TUNER_RADIO;
	213
	214	v->rangelow=FREQ_LO;
	215	v->rangehigh=FREQ_HI;
	216	v->rxsubchans =V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	217	v->capability=V4L2_TUNER_CAP_LOW;
	218	if(get_stereo(card->io))
	219	v->audmode = V4L2_TUNER_MODE_STEREO;
	220	else
	221	v->audmode = V4L2_TUNER_MODE_MONO;
	222	v->signal=0xffff*get_tune(card->io);
4286c6f6	223
1da177e4 LT	224	return 0;
1da177e4 LT	225	}
e84fef6b MCC	226	case VIDIOC_S_TUNER:
	227	{
	228	struct v4l2_tuner *v = arg;
	229
	230	if (v->index > 0)
1da177e4	231	return -EINVAL;
4286c6f6	232
1da177e4 LT	233	return 0;
1da177e4 LT	234	}
e84fef6b MCC	235	case VIDIOC_S_FREQUENCY:
	236	{
	237	struct v4l2_frequency *f = arg;
4286c6f6	238
e84fef6b	239	if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI)
1da177e4	240	return -EINVAL;
e84fef6b MCC	241
e84fef6b MCC	242	card->freq = f->frequency;
1da177e4 LT	243	set_freq(card->io, FREQ2BITS(card->freq));
	244	msleep(125);
	245	return 0;
	246	}
e84fef6b MCC	247	case VIDIOC_G_FREQUENCY:
	248	{
	249	struct v4l2_frequency *f = arg;
4286c6f6	250
e84fef6b MCC	251	f->type = V4L2_TUNER_RADIO;
e84fef6b MCC	252	f->frequency = card->freq;
4286c6f6	253
1da177e4 LT	254	return 0;
1da177e4 LT	255	}
e84fef6b MCC	256	case VIDIOC_QUERYCTRL:
	257	{
	258	struct v4l2_queryctrl *qc = arg;
	259	int i;
	260
	261	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	262	if (qc->id && qc->id == radio_qctrl[i].id) {
	263	memcpy(qc, &(radio_qctrl[i]),
	264	sizeof(*qc));
	265	return (0);
	266	}
	267	}
	268	return -EINVAL;
	269	}
	270	case VIDIOC_G_CTRL:
	271	{
	272	struct v4l2_control *ctrl= arg;
	273
	274	switch (ctrl->id) {
	275	case V4L2_CID_AUDIO_MUTE:
	276	ctrl->value=card->muted;
	277	return (0);
	278	}
	279	return -EINVAL;
1da177e4	280	}
e84fef6b MCC	281	case VIDIOC_S_CTRL:
	282	{
	283	struct v4l2_control *ctrl= arg;
	284
	285	switch (ctrl->id) {
	286	case V4L2_CID_AUDIO_MUTE:
	287	card->muted = ctrl->value;
	288	if(card->muted)
	289	turn_power(card->io, 0);
	290	else
	291	set_freq(card->io, FREQ2BITS(card->freq));
	292	return 0;
	293	}
	294	return -EINVAL;
	295	}
	296
	297	default:
	298	return v4l_compat_translate_ioctl(inode,file,cmd,arg,
	299	radio_function);
	300
1da177e4 LT	301	}
	302	}
	303
	304	static int radio_ioctl(struct inode inode, struct file file,
	305	unsigned int cmd, unsigned long arg)
	306	{
	307	struct video_device *dev = video_devdata(file);
	308	struct radio_device *card=dev->priv;
	309	int ret;
4286c6f6	310
3593cab5	311	mutex_lock(&card->lock);
1da177e4	312	ret = video_usercopy(inode, file, cmd, arg, radio_function);
3593cab5	313	mutex_unlock(&card->lock);
1da177e4 LT	314	return ret;
	315	}
	316
	317	MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
	318	MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
	319	MODULE_LICENSE("GPL");
	320
	321
	322	static int __devinit maxiradio_init_one(struct pci_dev pdev, const struct pci_device_id ent)
	323	{
	324	if(!request_region(pci_resource_start(pdev, 0),
4286c6f6 MCC	325	pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
	326	printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n");
	327	goto err_out;
1da177e4 LT	328	}
	329
	330	if (pci_enable_device(pdev))
4286c6f6	331	goto err_out_free_region;
1da177e4 LT	332
1da177e4 LT	333	radio_unit.io = pci_resource_start(pdev, 0);
3593cab5	334	mutex_init(&radio_unit.lock);
1da177e4 LT	335	maxiradio_radio.priv = &radio_unit;
	336
	337	if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr)==-1) {
4286c6f6 MCC	338	printk("radio-maxiradio: can't register device!");
4286c6f6 MCC	339	goto err_out_free_region;
1da177e4 LT	340	}
	341
	342	printk(KERN_INFO "radio-maxiradio: version "
	343	DRIVER_VERSION
	344	" time "
	345	__TIME__ " "
	346	__DATE__
	347	"\n");
	348
	349	printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
	350	radio_unit.io);
	351	return 0;
	352
	353	err_out_free_region:
	354	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
	355	err_out:
	356	return -ENODEV;
	357	}
	358
	359	static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
	360	{
	361	video_unregister_device(&maxiradio_radio);
	362	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
	363	}
	364
	365	static struct pci_device_id maxiradio_pci_tbl[] = {
	366	{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
	367	PCI_ANY_ID, PCI_ANY_ID, },
	368	{ 0,}
	369	};
	370
	371	MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
	372
	373	static struct pci_driver maxiradio_driver = {
	374	.name = "radio-maxiradio",
	375	.id_table = maxiradio_pci_tbl,
	376	.probe = maxiradio_init_one,
	377	.remove = __devexit_p(maxiradio_remove_one),
	378	};
	379
	380	static int __init maxiradio_radio_init(void)
	381	{
9bfab8ce	382	return pci_register_driver(&maxiradio_driver);
1da177e4 LT	383	}
	384
	385	static void __exit maxiradio_radio_exit(void)
	386	{
	387	pci_unregister_driver(&maxiradio_driver);
	388	}
	389
	390	module_init(maxiradio_radio_init);
	391	module_exit(maxiradio_radio_exit);