[mirror_ubuntu-jammy-kernel.git] / drivers / media / radio / radio-maestro.c

/* Maestro PCI sound card radio driver for Linux support
 * (c) 2000 A. Tlalka, atlka@pg.gda.pl
 * Notes on the hardware
 *
 *  + Frequency control is done digitally
 *  + No volume control - only mute/unmute - you have to use Aux line volume
 *  control on Maestro card to set the volume
 *  + Radio status (tuned/not_tuned and stereo/mono) is valid some time after
 *  frequency setting (>100ms) and only when the radio is unmuted.
 *  version 0.02
 *  + io port is automatically detected - only the first radio is used
 *  version 0.03
 *  + thread access locking additions
 *  version 0.04
 * + code improvements
 * + VIDEO_TUNER_LOW is permanent
 */

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


#define DRIVER_VERSION	"0.05"

#define GPIO_DATA	0x60   /* port offset from ESS_IO_BASE */

#define IO_MASK		4      /* mask      register offset from GPIO_DATA
				bits 1=unmask write to given bit */
#define IO_DIR		8      /* direction register offset from GPIO_DATA
				bits 0/1=read/write direction */

#define GPIO6		0x0040 /* mask bits for GPIO lines */
#define GPIO7		0x0080
#define GPIO8		0x0100
#define GPIO9		0x0200

#define STR_DATA	GPIO6  /* radio TEA5757 pins and GPIO bits */
#define STR_CLK		GPIO7
#define STR_WREN	GPIO8
#define STR_MOST	GPIO9

#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_nr = -1;
module_param(radio_nr, int, 0);

static int radio_ioctl(struct inode *inode, struct file *file,
	unsigned int cmd, unsigned long arg);
static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
static void maestro_remove(struct pci_dev *pdev);

static struct pci_device_id maestro_r_pci_tbl[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968),
		.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
		.class_mask = 0xffff00 },
	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978),
		.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
		.class_mask = 0xffff00 },
	{ 0 }
};
MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl);

static struct pci_driver maestro_r_driver = {
	.name		= "maestro_radio",
	.id_table	= maestro_r_pci_tbl,
	.probe		= maestro_probe,
	.remove		= __devexit_p(maestro_remove),
};

static struct file_operations maestro_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 maestro_radio = {
	.name		= "Maestro radio",
	.type		= VID_TYPE_TUNER,
	.hardware	= VID_HARDWARE_SF16MI,
	.fops		= &maestro_fops,
};

struct radio_device {
	u16	io,	/* base of Maestro card radio io (GPIO_DATA)*/
		muted,	/* VIDEO_AUDIO_MUTE */
		stereo,	/* VIDEO_TUNER_STEREO_ON */
		tuned;	/* signal strength (0 or 0xffff) */
	struct mutex lock;
};

static u32 radio_bits_get(struct radio_device *dev)
{
	register u16 io=dev->io, l, rdata;
	register u32 data=0;
	u16 omask;

	omask = inw(io + IO_MASK);
	outw(~(STR_CLK | STR_WREN), io + IO_MASK);
	outw(0, io);
	udelay(16);

	for (l=24;l--;) {
		outw(STR_CLK, io);		/* HI state */
		udelay(2);
		if(!l)
			dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff;
		outw(0, io);			/* LO state */
		udelay(2);
		data <<= 1;			/* shift data */
		rdata = inw(io);
		if(!l)
			dev->stereo =  rdata & STR_MOST ?
			0 : VIDEO_TUNER_STEREO_ON;
		else
			if(rdata & STR_DATA)
				data++;
		udelay(2);
	}

	if(dev->muted)
		outw(STR_WREN, io);

	udelay(4);
	outw(omask, io + IO_MASK);

	return data & 0x3ffe;
}

static void radio_bits_set(struct radio_device *dev, u32 data)
{
	register u16 io=dev->io, l, bits;
	u16 omask, odir;

	omask = inw(io + IO_MASK);
	odir  = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN);
	outw(odir | STR_DATA, io + IO_DIR);
	outw(~(STR_DATA | STR_CLK | STR_WREN), io + IO_MASK);
	udelay(16);
	for (l=25;l;l--) {
		bits = ((data >> 18) & STR_DATA) | STR_WREN ;
		data <<= 1;			/* shift data */
		outw(bits, io);			/* start strobe */
		udelay(2);
		outw(bits | STR_CLK, io);	/* HI level */
		udelay(2);
		outw(bits, io);			/* LO level */
		udelay(4);
	}

	if(!dev->muted)
		outw(0, io);

	udelay(4);
	outw(omask, io + IO_MASK);
	outw(odir, io + IO_DIR);
	msleep(125);
}

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 = video_get_drvdata(dev);

	switch (cmd) {
	case VIDIOCGCAP: {
		struct video_capability *v = arg;
		memset(v, 0, sizeof(*v));
		strcpy(v->name, "Maestro radio");
		v->type = VID_TYPE_TUNER;
		v->channels = v->audios = 1;
		return 0;
	} case VIDIOCGTUNER: {
		struct video_tuner *v = arg;
		if (v->tuner)
			return -EINVAL;
		(void)radio_bits_get(card);
		v->flags = VIDEO_TUNER_LOW | card->stereo;
		v->signal = card->tuned;
		strcpy(v->name, "FM");
		v->rangelow = FREQ_LO;
		v->rangehigh = FREQ_HI;
		v->mode = VIDEO_MODE_AUTO;
		return 0;
	} case VIDIOCSTUNER: {
		struct video_tuner *v = arg;
		if (v->tuner != 0)
			return -EINVAL;
		return 0;
	} case VIDIOCGFREQ: {
		unsigned long *freq = arg;
		*freq = BITS2FREQ(radio_bits_get(card));
		return 0;
	} case VIDIOCSFREQ: {
		unsigned long *freq = arg;
		if (*freq < FREQ_LO || *freq > FREQ_HI)
			return -EINVAL;
		radio_bits_set(card, FREQ2BITS(*freq));
		return 0;
	} case VIDIOCGAUDIO: {
		struct video_audio *v = arg;
		memset(v, 0, sizeof(*v));
		strcpy(v->name, "Radio");
		v->flags = VIDEO_AUDIO_MUTABLE | card->muted;
		v->mode = VIDEO_SOUND_STEREO;
		return 0;
	} case VIDIOCSAUDIO: {
		struct video_audio *v = arg;
		if (v->audio)
			return -EINVAL;
		{
			register u16 io = card->io;
			register u16 omask = inw(io + IO_MASK);
			outw(~STR_WREN, io + IO_MASK);
			outw((card->muted = v->flags & VIDEO_AUDIO_MUTE) ?
				STR_WREN : 0, io);
			udelay(4);
			outw(omask, io + IO_MASK);
			msleep(125);
			return 0;
		}
	} case VIDIOCGUNIT: {
		struct video_unit *v = arg;
		v->video = VIDEO_NO_UNIT;
		v->vbi = VIDEO_NO_UNIT;
		v->radio = dev->minor;
		v->audio = 0;
		v->teletext = VIDEO_NO_UNIT;
		return 0;
	} default:
		return -ENOIOCTLCMD;
	}
}

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 = video_get_drvdata(dev);
	int ret;

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

	return ret;
}

static u16 __devinit radio_power_on(struct radio_device *dev)
{
	register u16 io = dev->io;
	register u32 ofreq;
	u16 omask, odir;

	omask = inw(io + IO_MASK);
	odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN);
	outw(odir & ~STR_WREN, io + IO_DIR);
	dev->muted = inw(io) & STR_WREN ? 0 : VIDEO_AUDIO_MUTE;
	outw(odir, io + IO_DIR);
	outw(~(STR_WREN | STR_CLK), io + IO_MASK);
	outw(dev->muted ? 0 : STR_WREN, io);
	udelay(16);
	outw(omask, io + IO_MASK);
	ofreq = radio_bits_get(dev);

	if ((ofreq < FREQ2BITS(FREQ_LO)) || (ofreq > FREQ2BITS(FREQ_HI)))
		ofreq = FREQ2BITS(FREQ_LO);
	radio_bits_set(dev, ofreq);

	return (ofreq == radio_bits_get(dev));
}

static int __devinit maestro_probe(struct pci_dev *pdev,
	const struct pci_device_id *ent)
{
	struct radio_device *radio_unit;
	struct video_device *maestro_radio_inst;
	int retval;

	retval = pci_enable_device(pdev);
	if (retval) {
		dev_err(&pdev->dev, "enabling pci device failed!\n");
		goto err;
	}

	retval = -ENOMEM;

	radio_unit = kzalloc(sizeof(*radio_unit), GFP_KERNEL);
	if (radio_unit == NULL) {
		dev_err(&pdev->dev, "not enough memory\n");
		goto err;
	}

	radio_unit->io = pci_resource_start(pdev, 0) + GPIO_DATA;
	mutex_init(&radio_unit->lock);

	maestro_radio_inst = video_device_alloc();
	if (maestro_radio_inst == NULL) {
		dev_err(&pdev->dev, "not enough memory\n");
		goto errfr;
	}

	memcpy(maestro_radio_inst, &maestro_radio, sizeof(maestro_radio));
	video_set_drvdata(maestro_radio_inst, radio_unit);
	pci_set_drvdata(pdev, maestro_radio_inst);

	retval = video_register_device(maestro_radio_inst, VFL_TYPE_RADIO,
		radio_nr);
	if (retval) {
		printk(KERN_ERR "can't register video device!\n");
		goto errfr1;
	}

	if (!radio_power_on(radio_unit)) {
		retval = -EIO;
		goto errunr;
	}

	dev_info(&pdev->dev, "version " DRIVER_VERSION " time " __TIME__ "  "
		 __DATE__ "\n");
	dev_info(&pdev->dev, "radio chip initialized\n");

	return 0;
errunr:
	video_unregister_device(maestro_radio_inst);
errfr1:
	kfree(maestro_radio_inst);
errfr:
	kfree(radio_unit);
err:
	return retval;

}

static void __devexit maestro_remove(struct pci_dev *pdev)
{
	struct video_device *vdev = pci_get_drvdata(pdev);

	video_unregister_device(vdev);
}

static int __init maestro_radio_init(void)
{
	int retval = pci_register_driver(&maestro_r_driver);

	if (retval)
		printk(KERN_ERR "error during registration pci driver\n");

	return retval;
}

static void __exit maestro_radio_exit(void)
{
	pci_unregister_driver(&maestro_r_driver);
}

module_init(maestro_radio_init);
module_exit(maestro_radio_exit);

MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl");
MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio.");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/* Maestro PCI sound card radio driver for Linux support
	2	* (c) 2000 A. Tlalka, atlka@pg.gda.pl
	3	* Notes on the hardware
	4	*
4286c6f6	5	* + Frequency control is done digitally
1da177e4 LT	6	* + No volume control - only mute/unmute - you have to use Aux line volume
	7	* control on Maestro card to set the volume
	8	* + Radio status (tuned/not_tuned and stereo/mono) is valid some time after
	9	* frequency setting (>100ms) and only when the radio is unmuted.
	10	* version 0.02
	11	* + io port is automatically detected - only the first radio is used
	12	* version 0.03
	13	* + thread access locking additions
	14	* version 0.04
	15	* + code improvements
	16	* + VIDEO_TUNER_LOW is permanent
	17	*/
	18
	19	#include <linux/module.h>
	20	#include <linux/init.h>
	21	#include <linux/ioport.h>
	22	#include <linux/delay.h>
	23	#include <linux/sched.h>
	24	#include <asm/io.h>
	25	#include <asm/uaccess.h>
3593cab5	26	#include <linux/mutex.h>
1da177e4 LT	27	#include <linux/pci.h>
	28	#include <linux/videodev.h>
	29
3593cab5	30
89dad8f0	31	#define DRIVER_VERSION "0.05"
1da177e4	32
6a2cf8ee	33	#define GPIO_DATA 0x60 /* port offset from ESS_IO_BASE */
1da177e4 LT	34
	35	#define IO_MASK 4 /* mask register offset from GPIO_DATA
	36	bits 1=unmask write to given bit */
	37	#define IO_DIR 8 /* direction register offset from GPIO_DATA
	38	bits 0/1=read/write direction */
	39
6a2cf8ee JS	40	#define GPIO6 0x0040 /* mask bits for GPIO lines */
	41	#define GPIO7 0x0080
	42	#define GPIO8 0x0100
	43	#define GPIO9 0x0200
1da177e4	44
6a2cf8ee JS	45	#define STR_DATA GPIO6 /* radio TEA5757 pins and GPIO bits */
	46	#define STR_CLK GPIO7
	47	#define STR_WREN GPIO8
	48	#define STR_MOST GPIO9
1da177e4 LT	49
	50	#define FREQ_LO 50*16000
	51	#define FREQ_HI 150*16000
	52
6a2cf8ee JS	53	#define FREQ_IF 171200 /* 10.716000 /
6a2cf8ee JS	54	#define FREQ_STEP 200 /* 12.516 /
1da177e4 LT	55
	56	#define FREQ2BITS(x) ((((unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
	57	/(FREQ_STEP<<2))<<2) /* (x==fmhz161000) -> bits */
	58
	59	#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
	60
	61	static int radio_nr = -1;
	62	module_param(radio_nr, int, 0);
	63
	64	static int radio_ioctl(struct inode inode, struct file file,
6a2cf8ee	65	unsigned int cmd, unsigned long arg);
89dad8f0 JS	66	static int maestro_probe(struct pci_dev pdev, const struct pci_device_id ent);
	67	static void maestro_remove(struct pci_dev *pdev);
	68
	69	static struct pci_device_id maestro_r_pci_tbl[] = {
	70	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968),
	71	.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
	72	.class_mask = 0xffff00 },
	73	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978),
	74	.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
	75	.class_mask = 0xffff00 },
	76	{ 0 }
	77	};
	78	MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl);
	79
	80	static struct pci_driver maestro_r_driver = {
	81	.name = "maestro_radio",
	82	.id_table = maestro_r_pci_tbl,
	83	.probe = maestro_probe,
	84	.remove = __devexit_p(maestro_remove),
	85	};
1da177e4 LT	86
	87	static struct file_operations maestro_fops = {
	88	.owner = THIS_MODULE,
	89	.open = video_exclusive_open,
	90	.release = video_exclusive_release,
	91	.ioctl = radio_ioctl,
0d0fbf81	92	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	93	.llseek = no_llseek,
	94	};
	95
6a2cf8ee	96	static struct video_device maestro_radio = {
1da177e4 LT	97	.name = "Maestro radio",
	98	.type = VID_TYPE_TUNER,
	99	.hardware = VID_HARDWARE_SF16MI,
6a2cf8ee	100	.fops = &maestro_fops,
1da177e4 LT	101	};
1da177e4 LT	102
6a2cf8ee	103	struct radio_device {
0eaa21fd	104	u16 io, /* base of Maestro card radio io (GPIO_DATA)*/
1da177e4	105	muted, /* VIDEO_AUDIO_MUTE */
4286c6f6	106	stereo, /* VIDEO_TUNER_STEREO_ON */
1da177e4	107	tuned; /* signal strength (0 or 0xffff) */
3593cab5	108	struct mutex lock;
89dad8f0	109	};
1da177e4	110
0eaa21fd	111	static u32 radio_bits_get(struct radio_device *dev)
1da177e4	112	{
0eaa21fd JS	113	register u16 io=dev->io, l, rdata;
	114	register u32 data=0;
	115	u16 omask;
6a2cf8ee	116
1da177e4 LT	117	omask = inw(io + IO_MASK);
	118	outw(~(STR_CLK \| STR_WREN), io + IO_MASK);
	119	outw(0, io);
	120	udelay(16);
	121
	122	for (l=24;l--;) {
	123	outw(STR_CLK, io); /* HI state */
	124	udelay(2);
4286c6f6	125	if(!l)
1da177e4 LT	126	dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff;
	127	outw(0, io); /* LO state */
	128	udelay(2);
	129	data <<= 1; /* shift data */
	130	rdata = inw(io);
	131	if(!l)
4286c6f6	132	dev->stereo = rdata & STR_MOST ?
1da177e4 LT	133	0 : VIDEO_TUNER_STEREO_ON;
	134	else
	135	if(rdata & STR_DATA)
	136	data++;
	137	udelay(2);
	138	}
6a2cf8ee	139
1da177e4 LT	140	if(dev->muted)
1da177e4 LT	141	outw(STR_WREN, io);
6a2cf8ee	142
1da177e4 LT	143	udelay(4);
1da177e4 LT	144	outw(omask, io + IO_MASK);
6a2cf8ee	145
1da177e4 LT	146	return data & 0x3ffe;
	147	}
	148
0eaa21fd	149	static void radio_bits_set(struct radio_device *dev, u32 data)
1da177e4	150	{
0eaa21fd JS	151	register u16 io=dev->io, l, bits;
0eaa21fd JS	152	u16 omask, odir;
6a2cf8ee	153
1da177e4 LT	154	omask = inw(io + IO_MASK);
	155	odir = (inw(io + IO_DIR) & ~STR_DATA) \| (STR_CLK \| STR_WREN);
	156	outw(odir \| STR_DATA, io + IO_DIR);
	157	outw(~(STR_DATA \| STR_CLK \| STR_WREN), io + IO_MASK);
	158	udelay(16);
	159	for (l=25;l;l--) {
	160	bits = ((data >> 18) & STR_DATA) \| STR_WREN ;
	161	data <<= 1; /* shift data */
	162	outw(bits, io); /* start strobe */
	163	udelay(2);
	164	outw(bits \| STR_CLK, io); /* HI level */
	165	udelay(2);
	166	outw(bits, io); /* LO level */
	167	udelay(4);
	168	}
6a2cf8ee	169
1da177e4 LT	170	if(!dev->muted)
1da177e4 LT	171	outw(0, io);
6a2cf8ee	172
1da177e4 LT	173	udelay(4);
	174	outw(omask, io + IO_MASK);
	175	outw(odir, io + IO_DIR);
	176	msleep(125);
	177	}
	178
77933d72	179	static inline int radio_function(struct inode inode, struct file file,
6a2cf8ee	180	unsigned int cmd, void *arg)
1da177e4 LT	181	{
1da177e4 LT	182	struct video_device *dev = video_devdata(file);
f86e7767	183	struct radio_device *card = video_get_drvdata(dev);
6a2cf8ee JS	184
	185	switch (cmd) {
	186	case VIDIOCGCAP: {
	187	struct video_capability *v = arg;
	188	memset(v, 0, sizeof(*v));
	189	strcpy(v->name, "Maestro radio");
	190	v->type = VID_TYPE_TUNER;
	191	v->channels = v->audios = 1;
	192	return 0;
	193	} case VIDIOCGTUNER: {
	194	struct video_tuner *v = arg;
	195	if (v->tuner)
	196	return -EINVAL;
	197	(void)radio_bits_get(card);
	198	v->flags = VIDEO_TUNER_LOW \| card->stereo;
	199	v->signal = card->tuned;
	200	strcpy(v->name, "FM");
	201	v->rangelow = FREQ_LO;
	202	v->rangehigh = FREQ_HI;
	203	v->mode = VIDEO_MODE_AUTO;
	204	return 0;
	205	} case VIDIOCSTUNER: {
	206	struct video_tuner *v = arg;
	207	if (v->tuner != 0)
	208	return -EINVAL;
	209	return 0;
	210	} case VIDIOCGFREQ: {
	211	unsigned long *freq = arg;
	212	*freq = BITS2FREQ(radio_bits_get(card));
	213	return 0;
	214	} case VIDIOCSFREQ: {
	215	unsigned long *freq = arg;
	216	if (freq < FREQ_LO \|\| freq > FREQ_HI)
	217	return -EINVAL;
	218	radio_bits_set(card, FREQ2BITS(*freq));
	219	return 0;
	220	} case VIDIOCGAUDIO: {
	221	struct video_audio *v = arg;
	222	memset(v, 0, sizeof(*v));
	223	strcpy(v->name, "Radio");
	224	v->flags = VIDEO_AUDIO_MUTABLE \| card->muted;
	225	v->mode = VIDEO_SOUND_STEREO;
	226	return 0;
	227	} case VIDIOCSAUDIO: {
	228	struct video_audio *v = arg;
	229	if (v->audio)
	230	return -EINVAL;
	231	{
0eaa21fd JS	232	register u16 io = card->io;
0eaa21fd JS	233	register u16 omask = inw(io + IO_MASK);
6a2cf8ee JS	234	outw(~STR_WREN, io + IO_MASK);
	235	outw((card->muted = v->flags & VIDEO_AUDIO_MUTE) ?
	236	STR_WREN : 0, io);
	237	udelay(4);
	238	outw(omask, io + IO_MASK);
	239	msleep(125);
1da177e4 LT	240	return 0;
1da177e4 LT	241	}
6a2cf8ee JS	242	} case VIDIOCGUNIT: {
	243	struct video_unit *v = arg;
	244	v->video = VIDEO_NO_UNIT;
	245	v->vbi = VIDEO_NO_UNIT;
	246	v->radio = dev->minor;
	247	v->audio = 0;
	248	v->teletext = VIDEO_NO_UNIT;
	249	return 0;
	250	} default:
	251	return -ENOIOCTLCMD;
1da177e4 LT	252	}
	253	}
	254
	255	static int radio_ioctl(struct inode inode, struct file file,
6a2cf8ee	256	unsigned int cmd, unsigned long arg)
1da177e4 LT	257	{
1da177e4 LT	258	struct video_device *dev = video_devdata(file);
f86e7767	259	struct radio_device *card = video_get_drvdata(dev);
1da177e4 LT	260	int ret;
1da177e4 LT	261
3593cab5	262	mutex_lock(&card->lock);
1da177e4	263	ret = video_usercopy(inode, file, cmd, arg, radio_function);
3593cab5	264	mutex_unlock(&card->lock);
6a2cf8ee	265
1da177e4 LT	266	return ret;
	267	}
	268
0eaa21fd	269	static u16 __devinit radio_power_on(struct radio_device *dev)
1da177e4	270	{
0eaa21fd JS	271	register u16 io = dev->io;
	272	register u32 ofreq;
	273	u16 omask, odir;
6a2cf8ee	274
1da177e4	275	omask = inw(io + IO_MASK);
6a2cf8ee	276	odir = (inw(io + IO_DIR) & ~STR_DATA) \| (STR_CLK \| STR_WREN);
1da177e4 LT	277	outw(odir & ~STR_WREN, io + IO_DIR);
	278	dev->muted = inw(io) & STR_WREN ? 0 : VIDEO_AUDIO_MUTE;
	279	outw(odir, io + IO_DIR);
	280	outw(~(STR_WREN \| STR_CLK), io + IO_MASK);
	281	outw(dev->muted ? 0 : STR_WREN, io);
	282	udelay(16);
	283	outw(omask, io + IO_MASK);
	284	ofreq = radio_bits_get(dev);
6a2cf8ee JS	285
6a2cf8ee JS	286	if ((ofreq < FREQ2BITS(FREQ_LO)) \|\| (ofreq > FREQ2BITS(FREQ_HI)))
1da177e4 LT	287	ofreq = FREQ2BITS(FREQ_LO);
1da177e4 LT	288	radio_bits_set(dev, ofreq);
6a2cf8ee	289
1da177e4 LT	290	return (ofreq == radio_bits_get(dev));
	291	}
	292
89dad8f0 JS	293	static int __devinit maestro_probe(struct pci_dev *pdev,
89dad8f0 JS	294	const struct pci_device_id *ent)
1da177e4	295	{
89dad8f0 JS	296	struct radio_device *radio_unit;
	297	struct video_device *maestro_radio_inst;
	298	int retval;
	299
	300	retval = pci_enable_device(pdev);
	301	if (retval) {
	302	dev_err(&pdev->dev, "enabling pci device failed!\n");
	303	goto err;
	304	}
	305
	306	retval = -ENOMEM;
	307
	308	radio_unit = kzalloc(sizeof(*radio_unit), GFP_KERNEL);
	309	if (radio_unit == NULL) {
	310	dev_err(&pdev->dev, "not enough memory\n");
	311	goto err;
	312	}
	313
	314	radio_unit->io = pci_resource_start(pdev, 0) + GPIO_DATA;
3593cab5	315	mutex_init(&radio_unit->lock);
89dad8f0 JS	316
	317	maestro_radio_inst = video_device_alloc();
	318	if (maestro_radio_inst == NULL) {
	319	dev_err(&pdev->dev, "not enough memory\n");
	320	goto errfr;
	321	}
	322
	323	memcpy(maestro_radio_inst, &maestro_radio, sizeof(maestro_radio));
	324	video_set_drvdata(maestro_radio_inst, radio_unit);
	325	pci_set_drvdata(pdev, maestro_radio_inst);
	326
	327	retval = video_register_device(maestro_radio_inst, VFL_TYPE_RADIO,
	328	radio_nr);
	329	if (retval) {
	330	printk(KERN_ERR "can't register video device!\n");
	331	goto errfr1;
	332	}
	333
	334	if (!radio_power_on(radio_unit)) {
	335	retval = -EIO;
	336	goto errunr;
	337	}
	338
	339	dev_info(&pdev->dev, "version " DRIVER_VERSION " time " __TIME__ " "
6a2cf8ee	340	__DATE__ "\n");
89dad8f0 JS	341	dev_info(&pdev->dev, "radio chip initialized\n");
	342
	343	return 0;
	344	errunr:
	345	video_unregister_device(maestro_radio_inst);
	346	errfr1:
	347	kfree(maestro_radio_inst);
	348	errfr:
	349	kfree(radio_unit);
	350	err:
	351	return retval;
	352
	353	}
	354
	355	static void __devexit maestro_remove(struct pci_dev *pdev)
	356	{
	357	struct video_device *vdev = pci_get_drvdata(pdev);
	358
	359	video_unregister_device(vdev);
1da177e4 LT	360	}
1da177e4 LT	361
89dad8f0 JS	362	static int __init maestro_radio_init(void)
	363	{
	364	int retval = pci_register_driver(&maestro_r_driver);
	365
	366	if (retval)
	367	printk(KERN_ERR "error during registration pci driver\n");
	368
	369	return retval;
	370	}
	371
	372	static void __exit maestro_radio_exit(void)
	373	{
	374	pci_unregister_driver(&maestro_r_driver);
	375	}
	376
	377	module_init(maestro_radio_init);
	378	module_exit(maestro_radio_exit);
6a2cf8ee JS	379
	380	MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl");
	381	MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio.");
	382	MODULE_LICENSE("GPL");