[mirror_ubuntu-artful-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
 *
 * 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/pci.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>

#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#define RADIO_VERSION KERNEL_VERSION(0,0,6)
#define DRIVER_VERSION	"0.06"

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,
	}
};

#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 unsigned long in_use;

static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent);

static int maestro_exclusive_open(struct inode *inode, struct file *file)
{
	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
}

static int maestro_exclusive_release(struct inode *inode, struct file *file)
{
	clear_bit(0, &in_use);
	return 0;
}

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 const struct file_operations maestro_fops = {
	.owner		= THIS_MODULE,
	.open           = maestro_exclusive_open,
	.release        = maestro_exclusive_release,
	.ioctl		= video_ioctl2,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= v4l_compat_ioctl32,
#endif
	.llseek         = no_llseek,
};

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) */
};

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 : 1;
		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 int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-maestro", sizeof(v->driver));
	strlcpy(v->card, "Maestro Radio", sizeof(v->card));
	sprintf(v->bus_info, "PCI");
	v->version = RADIO_VERSION;
	v->capabilities = V4L2_CAP_TUNER;
	return 0;
}

static int vidioc_g_tuner(struct file *file, void *priv,
					struct v4l2_tuner *v)
{
	struct video_device *dev = video_devdata(file);
	struct radio_device *card = video_get_drvdata(dev);

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

	(void)radio_bits_get(card);

	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(card->stereo)
		v->audmode = V4L2_TUNER_MODE_STEREO;
	else
		v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = card->tuned;
	return 0;
}

static int vidioc_s_tuner(struct file *file, void *priv,
					struct v4l2_tuner *v)
{
	if (v->index > 0)
		return -EINVAL;
	return 0;
}

static int vidioc_s_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct video_device *dev = video_devdata(file);
	struct radio_device *card = video_get_drvdata(dev);

	if (f->frequency < FREQ_LO || f->frequency > FREQ_HI)
		return -EINVAL;
	radio_bits_set(card, FREQ2BITS(f->frequency));
	return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct video_device *dev = video_devdata(file);
	struct radio_device *card = video_get_drvdata(dev);

	f->type = V4L2_TUNER_RADIO;
	f->frequency = BITS2FREQ(radio_bits_get(card));
	return 0;
}

static int vidioc_queryctrl(struct file *file, void *priv,
					struct v4l2_queryctrl *qc)
{
	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;
}

static int vidioc_g_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct video_device *dev = video_devdata(file);
	struct radio_device *card = video_get_drvdata(dev);

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

static int vidioc_s_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct video_device *dev = video_devdata(file);
	struct radio_device *card = video_get_drvdata(dev);
	register u16 io = card->io;
	register u16 omask = inw(io + IO_MASK);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		outw(~STR_WREN, io + IO_MASK);
		outw((card->muted = ctrl->value ) ?
				STR_WREN : 0, io);
		udelay(4);
		outw(omask, io + IO_MASK);
		msleep(125);
		return 0;
	}
	return -EINVAL;
}

static int vidioc_g_audio(struct file *file, void *priv,
					struct v4l2_audio *a)
{
	if (a->index > 1)
		return -EINVAL;

	strcpy(a->name, "Radio");
	a->capability = V4L2_AUDCAP_STEREO;
	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)
{
	if (i != 0)
		return -EINVAL;
	return 0;
}

static int vidioc_s_audio(struct file *file, void *priv,
					struct v4l2_audio *a)
{
	if (a->index != 0)
		return -EINVAL;
	return 0;
}

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 : 1;
	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 const struct v4l2_ioctl_ops maestro_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 struct video_device maestro_radio = {
	.name           = "Maestro radio",
	.fops           = &maestro_fops,
	.ioctl_ops 	= &maestro_ioctl_ops,
};

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;

	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:
	video_device_release(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
b6055d7b MCC	17	*
b6055d7b MCC	18	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	19	*/
	20
	21	#include <linux/module.h>
	22	#include <linux/init.h>
	23	#include <linux/ioport.h>
	24	#include <linux/delay.h>
1da177e4 LT	25	#include <asm/io.h>
1da177e4 LT	26	#include <asm/uaccess.h>
1da177e4	27	#include <linux/pci.h>
b6055d7b	28	#include <linux/videodev2.h>
5e87efa3	29	#include <media/v4l2-common.h>
35ea11ff	30	#include <media/v4l2-ioctl.h>
3593cab5	31
b6055d7b MCC	32	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	33	#define RADIO_VERSION KERNEL_VERSION(0,0,6)
	34	#define DRIVER_VERSION "0.06"
	35
	36	static struct v4l2_queryctrl radio_qctrl[] = {
	37	{
	38	.id = V4L2_CID_AUDIO_MUTE,
	39	.name = "Mute",
	40	.minimum = 0,
	41	.maximum = 1,
	42	.default_value = 1,
	43	.type = V4L2_CTRL_TYPE_BOOLEAN,
	44	}
	45	};
1da177e4	46
6a2cf8ee	47	#define GPIO_DATA 0x60 /* port offset from ESS_IO_BASE */
1da177e4 LT	48
	49	#define IO_MASK 4 /* mask register offset from GPIO_DATA
	50	bits 1=unmask write to given bit */
	51	#define IO_DIR 8 /* direction register offset from GPIO_DATA
	52	bits 0/1=read/write direction */
	53
6a2cf8ee JS	54	#define GPIO6 0x0040 /* mask bits for GPIO lines */
	55	#define GPIO7 0x0080
	56	#define GPIO8 0x0100
	57	#define GPIO9 0x0200
1da177e4	58
6a2cf8ee JS	59	#define STR_DATA GPIO6 /* radio TEA5757 pins and GPIO bits */
	60	#define STR_CLK GPIO7
	61	#define STR_WREN GPIO8
	62	#define STR_MOST GPIO9
1da177e4 LT	63
	64	#define FREQ_LO 50*16000
	65	#define FREQ_HI 150*16000
	66
6a2cf8ee JS	67	#define FREQ_IF 171200 /* 10.716000 /
6a2cf8ee JS	68	#define FREQ_STEP 200 /* 12.516 /
1da177e4 LT	69
	70	#define FREQ2BITS(x) ((((unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
	71	/(FREQ_STEP<<2))<<2) /* (x==fmhz161000) -> bits */
	72
	73	#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
	74
	75	static int radio_nr = -1;
	76	module_param(radio_nr, int, 0);
	77
3ca685aa HV	78	static unsigned long in_use;
3ca685aa HV	79
89dad8f0	80	static int maestro_probe(struct pci_dev pdev, const struct pci_device_id ent);
3ca685aa HV	81
	82	static int maestro_exclusive_open(struct inode inode, struct file file)
	83	{
	84	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
	85	}
	86
	87	static int maestro_exclusive_release(struct inode inode, struct file file)
	88	{
	89	clear_bit(0, &in_use);
	90	return 0;
	91	}
	92
89dad8f0 JS	93	static void maestro_remove(struct pci_dev *pdev);
	94
	95	static struct pci_device_id maestro_r_pci_tbl[] = {
	96	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968),
	97	.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
	98	.class_mask = 0xffff00 },
	99	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978),
	100	.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
	101	.class_mask = 0xffff00 },
	102	{ 0 }
	103	};
	104	MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl);
	105
	106	static struct pci_driver maestro_r_driver = {
	107	.name = "maestro_radio",
	108	.id_table = maestro_r_pci_tbl,
	109	.probe = maestro_probe,
	110	.remove = __devexit_p(maestro_remove),
	111	};
1da177e4	112
fa027c2a	113	static const struct file_operations maestro_fops = {
1da177e4	114	.owner = THIS_MODULE,
3ca685aa HV	115	.open = maestro_exclusive_open,
3ca685aa HV	116	.release = maestro_exclusive_release,
d455cf5d	117	.ioctl = video_ioctl2,
078ff795	118	#ifdef CONFIG_COMPAT
0d0fbf81	119	.compat_ioctl = v4l_compat_ioctl32,
078ff795	120	#endif
1da177e4 LT	121	.llseek = no_llseek,
	122	};
	123
6a2cf8ee	124	struct radio_device {
0eaa21fd	125	u16 io, /* base of Maestro card radio io (GPIO_DATA)*/
1da177e4	126	muted, /* VIDEO_AUDIO_MUTE */
4286c6f6	127	stereo, /* VIDEO_TUNER_STEREO_ON */
1da177e4	128	tuned; /* signal strength (0 or 0xffff) */
89dad8f0	129	};
1da177e4	130
0eaa21fd	131	static u32 radio_bits_get(struct radio_device *dev)
1da177e4	132	{
0eaa21fd JS	133	register u16 io=dev->io, l, rdata;
	134	register u32 data=0;
	135	u16 omask;
6a2cf8ee	136
1da177e4 LT	137	omask = inw(io + IO_MASK);
	138	outw(~(STR_CLK \| STR_WREN), io + IO_MASK);
	139	outw(0, io);
	140	udelay(16);
	141
	142	for (l=24;l--;) {
	143	outw(STR_CLK, io); /* HI state */
	144	udelay(2);
4286c6f6	145	if(!l)
1da177e4 LT	146	dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff;
	147	outw(0, io); /* LO state */
	148	udelay(2);
	149	data <<= 1; /* shift data */
	150	rdata = inw(io);
	151	if(!l)
4286c6f6	152	dev->stereo = rdata & STR_MOST ?
b6055d7b	153	0 : 1;
1da177e4 LT	154	else
	155	if(rdata & STR_DATA)
	156	data++;
	157	udelay(2);
	158	}
6a2cf8ee	159
1da177e4 LT	160	if(dev->muted)
1da177e4 LT	161	outw(STR_WREN, io);
6a2cf8ee	162
1da177e4 LT	163	udelay(4);
1da177e4 LT	164	outw(omask, io + IO_MASK);
6a2cf8ee	165
1da177e4 LT	166	return data & 0x3ffe;
	167	}
	168
0eaa21fd	169	static void radio_bits_set(struct radio_device *dev, u32 data)
1da177e4	170	{
0eaa21fd JS	171	register u16 io=dev->io, l, bits;
0eaa21fd JS	172	u16 omask, odir;
6a2cf8ee	173
1da177e4 LT	174	omask = inw(io + IO_MASK);
	175	odir = (inw(io + IO_DIR) & ~STR_DATA) \| (STR_CLK \| STR_WREN);
	176	outw(odir \| STR_DATA, io + IO_DIR);
	177	outw(~(STR_DATA \| STR_CLK \| STR_WREN), io + IO_MASK);
	178	udelay(16);
	179	for (l=25;l;l--) {
	180	bits = ((data >> 18) & STR_DATA) \| STR_WREN ;
	181	data <<= 1; /* shift data */
	182	outw(bits, io); /* start strobe */
	183	udelay(2);
	184	outw(bits \| STR_CLK, io); /* HI level */
	185	udelay(2);
	186	outw(bits, io); /* LO level */
	187	udelay(4);
	188	}
6a2cf8ee	189
1da177e4 LT	190	if(!dev->muted)
1da177e4 LT	191	outw(0, io);
6a2cf8ee	192
1da177e4 LT	193	udelay(4);
	194	outw(omask, io + IO_MASK);
	195	outw(odir, io + IO_DIR);
	196	msleep(125);
	197	}
	198
d455cf5d DL	199	static int vidioc_querycap(struct file file, void priv,
	200	struct v4l2_capability *v)
	201	{
	202	strlcpy(v->driver, "radio-maestro", sizeof(v->driver));
	203	strlcpy(v->card, "Maestro Radio", sizeof(v->card));
	204	sprintf(v->bus_info, "PCI");
	205	v->version = RADIO_VERSION;
	206	v->capabilities = V4L2_CAP_TUNER;
	207	return 0;
	208	}
	209
	210	static int vidioc_g_tuner(struct file file, void priv,
	211	struct v4l2_tuner *v)
1da177e4 LT	212	{
1da177e4 LT	213	struct video_device *dev = video_devdata(file);
f86e7767	214	struct radio_device *card = video_get_drvdata(dev);
6a2cf8ee	215
d455cf5d DL	216	if (v->index > 0)
	217	return -EINVAL;
	218
	219	(void)radio_bits_get(card);
	220
	221	strcpy(v->name, "FM");
	222	v->type = V4L2_TUNER_RADIO;
	223	v->rangelow = FREQ_LO;
	224	v->rangehigh = FREQ_HI;
	225	v->rxsubchans = V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	226	v->capability = V4L2_TUNER_CAP_LOW;
	227	if(card->stereo)
	228	v->audmode = V4L2_TUNER_MODE_STEREO;
	229	else
	230	v->audmode = V4L2_TUNER_MODE_MONO;
	231	v->signal = card->tuned;
	232	return 0;
	233	}
b6055d7b	234
d455cf5d DL	235	static int vidioc_s_tuner(struct file file, void priv,
	236	struct v4l2_tuner *v)
	237	{
	238	if (v->index > 0)
	239	return -EINVAL;
	240	return 0;
	241	}
b6055d7b	242
d455cf5d DL	243	static int vidioc_s_frequency(struct file file, void priv,
	244	struct v4l2_frequency *f)
	245	{
	246	struct video_device *dev = video_devdata(file);
	247	struct radio_device *card = video_get_drvdata(dev);
b6055d7b	248
d455cf5d DL	249	if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI)
	250	return -EINVAL;
	251	radio_bits_set(card, FREQ2BITS(f->frequency));
	252	return 0;
	253	}
b6055d7b	254
d455cf5d DL	255	static int vidioc_g_frequency(struct file file, void priv,
	256	struct v4l2_frequency *f)
	257	{
	258	struct video_device *dev = video_devdata(file);
	259	struct radio_device *card = video_get_drvdata(dev);
b6055d7b	260
d455cf5d DL	261	f->type = V4L2_TUNER_RADIO;
	262	f->frequency = BITS2FREQ(radio_bits_get(card));
	263	return 0;
	264	}
b6055d7b	265
d455cf5d DL	266	static int vidioc_queryctrl(struct file file, void priv,
	267	struct v4l2_queryctrl *qc)
	268	{
	269	int i;
b6055d7b	270
d455cf5d DL	271	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	272	if (qc->id && qc->id == radio_qctrl[i].id) {
	273	memcpy(qc, &(radio_qctrl[i]),
	274	sizeof(*qc));
b6055d7b MCC	275	return 0;
b6055d7b MCC	276	}
d455cf5d DL	277	}
	278	return -EINVAL;
	279	}
b6055d7b	280
d455cf5d DL	281	static int vidioc_g_ctrl(struct file file, void priv,
	282	struct v4l2_control *ctrl)
	283	{
	284	struct video_device *dev = video_devdata(file);
	285	struct radio_device *card = video_get_drvdata(dev);
b6055d7b	286
d455cf5d DL	287	switch (ctrl->id) {
	288	case V4L2_CID_AUDIO_MUTE:
	289	ctrl->value = card->muted;
	290	return 0;
1da177e4	291	}
d455cf5d	292	return -EINVAL;
1da177e4 LT	293	}
1da177e4 LT	294
d455cf5d DL	295	static int vidioc_s_ctrl(struct file file, void priv,
d455cf5d DL	296	struct v4l2_control *ctrl)
1da177e4 LT	297	{
1da177e4 LT	298	struct video_device *dev = video_devdata(file);
f86e7767	299	struct radio_device *card = video_get_drvdata(dev);
d455cf5d DL	300	register u16 io = card->io;
	301	register u16 omask = inw(io + IO_MASK);
	302
	303	switch (ctrl->id) {
	304	case V4L2_CID_AUDIO_MUTE:
	305	outw(~STR_WREN, io + IO_MASK);
	306	outw((card->muted = ctrl->value ) ?
	307	STR_WREN : 0, io);
	308	udelay(4);
	309	outw(omask, io + IO_MASK);
	310	msleep(125);
	311	return 0;
	312	}
	313	return -EINVAL;
	314	}
1da177e4	315
d455cf5d DL	316	static int vidioc_g_audio(struct file file, void priv,
	317	struct v4l2_audio *a)
	318	{
	319	if (a->index > 1)
	320	return -EINVAL;
	321
	322	strcpy(a->name, "Radio");
	323	a->capability = V4L2_AUDCAP_STEREO;
	324	return 0;
	325	}
6a2cf8ee	326
d455cf5d DL	327	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	328	{
	329	*i = 0;
	330	return 0;
	331	}
	332
	333	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	334	{
	335	if (i != 0)
	336	return -EINVAL;
	337	return 0;
	338	}
	339
	340	static int vidioc_s_audio(struct file file, void priv,
	341	struct v4l2_audio *a)
	342	{
	343	if (a->index != 0)
	344	return -EINVAL;
	345	return 0;
1da177e4 LT	346	}
1da177e4 LT	347
0eaa21fd	348	static u16 __devinit radio_power_on(struct radio_device *dev)
1da177e4	349	{
0eaa21fd JS	350	register u16 io = dev->io;
	351	register u32 ofreq;
	352	u16 omask, odir;
6a2cf8ee	353
1da177e4	354	omask = inw(io + IO_MASK);
6a2cf8ee	355	odir = (inw(io + IO_DIR) & ~STR_DATA) \| (STR_CLK \| STR_WREN);
1da177e4	356	outw(odir & ~STR_WREN, io + IO_DIR);
b6055d7b	357	dev->muted = inw(io) & STR_WREN ? 0 : 1;
1da177e4 LT	358	outw(odir, io + IO_DIR);
	359	outw(~(STR_WREN \| STR_CLK), io + IO_MASK);
	360	outw(dev->muted ? 0 : STR_WREN, io);
	361	udelay(16);
	362	outw(omask, io + IO_MASK);
	363	ofreq = radio_bits_get(dev);
6a2cf8ee JS	364
6a2cf8ee JS	365	if ((ofreq < FREQ2BITS(FREQ_LO)) \|\| (ofreq > FREQ2BITS(FREQ_HI)))
1da177e4 LT	366	ofreq = FREQ2BITS(FREQ_LO);
1da177e4 LT	367	radio_bits_set(dev, ofreq);
6a2cf8ee	368
1da177e4 LT	369	return (ofreq == radio_bits_get(dev));
	370	}
	371
a399810c	372	static const struct v4l2_ioctl_ops maestro_ioctl_ops = {
d455cf5d DL	373	.vidioc_querycap = vidioc_querycap,
	374	.vidioc_g_tuner = vidioc_g_tuner,
	375	.vidioc_s_tuner = vidioc_s_tuner,
	376	.vidioc_g_audio = vidioc_g_audio,
	377	.vidioc_s_audio = vidioc_s_audio,
	378	.vidioc_g_input = vidioc_g_input,
	379	.vidioc_s_input = vidioc_s_input,
	380	.vidioc_g_frequency = vidioc_g_frequency,
	381	.vidioc_s_frequency = vidioc_s_frequency,
	382	.vidioc_queryctrl = vidioc_queryctrl,
	383	.vidioc_g_ctrl = vidioc_g_ctrl,
	384	.vidioc_s_ctrl = vidioc_s_ctrl,
	385	};
	386
a399810c HV	387	static struct video_device maestro_radio = {
a399810c HV	388	.name = "Maestro radio",
a399810c HV	389	.fops = &maestro_fops,
	390	.ioctl_ops = &maestro_ioctl_ops,
	391	};
	392
89dad8f0 JS	393	static int __devinit maestro_probe(struct pci_dev *pdev,
89dad8f0 JS	394	const struct pci_device_id *ent)
1da177e4	395	{
89dad8f0 JS	396	struct radio_device *radio_unit;
	397	struct video_device *maestro_radio_inst;
	398	int retval;
	399
	400	retval = pci_enable_device(pdev);
	401	if (retval) {
	402	dev_err(&pdev->dev, "enabling pci device failed!\n");
	403	goto err;
	404	}
	405
	406	retval = -ENOMEM;
	407
	408	radio_unit = kzalloc(sizeof(*radio_unit), GFP_KERNEL);
	409	if (radio_unit == NULL) {
	410	dev_err(&pdev->dev, "not enough memory\n");
	411	goto err;
	412	}
	413
	414	radio_unit->io = pci_resource_start(pdev, 0) + GPIO_DATA;
89dad8f0 JS	415
	416	maestro_radio_inst = video_device_alloc();
	417	if (maestro_radio_inst == NULL) {
	418	dev_err(&pdev->dev, "not enough memory\n");
	419	goto errfr;
	420	}
	421
	422	memcpy(maestro_radio_inst, &maestro_radio, sizeof(maestro_radio));
	423	video_set_drvdata(maestro_radio_inst, radio_unit);
	424	pci_set_drvdata(pdev, maestro_radio_inst);
	425
cba99ae8	426	retval = video_register_device(maestro_radio_inst, VFL_TYPE_RADIO, radio_nr);
89dad8f0 JS	427	if (retval) {
	428	printk(KERN_ERR "can't register video device!\n");
	429	goto errfr1;
	430	}
	431
	432	if (!radio_power_on(radio_unit)) {
	433	retval = -EIO;
	434	goto errunr;
	435	}
	436
	437	dev_info(&pdev->dev, "version " DRIVER_VERSION " time " __TIME__ " "
6a2cf8ee	438	__DATE__ "\n");
89dad8f0 JS	439	dev_info(&pdev->dev, "radio chip initialized\n");
	440
	441	return 0;
	442	errunr:
	443	video_unregister_device(maestro_radio_inst);
	444	errfr1:
f37fdf3f	445	video_device_release(maestro_radio_inst);
89dad8f0 JS	446	errfr:
	447	kfree(radio_unit);
	448	err:
	449	return retval;
	450
	451	}
	452
	453	static void __devexit maestro_remove(struct pci_dev *pdev)
	454	{
	455	struct video_device *vdev = pci_get_drvdata(pdev);
	456
	457	video_unregister_device(vdev);
1da177e4 LT	458	}
1da177e4 LT	459
89dad8f0 JS	460	static int __init maestro_radio_init(void)
	461	{
	462	int retval = pci_register_driver(&maestro_r_driver);
	463
	464	if (retval)
	465	printk(KERN_ERR "error during registration pci driver\n");
	466
	467	return retval;
	468	}
	469
	470	static void __exit maestro_radio_exit(void)
	471	{
	472	pci_unregister_driver(&maestro_r_driver);
	473	}
	474
	475	module_init(maestro_radio_init);
	476	module_exit(maestro_radio_exit);
6a2cf8ee JS	477
	478	MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl");
	479	MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio.");
	480	MODULE_LICENSE("GPL");