[deliverable/linux.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 <asm/semaphore.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	semaphore 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;

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