[GitHub/mt8127/android_kernel_alcatel_ttab.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 file *file)
{
	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
}

static int maestro_exclusive_release(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 v4l2_file_operations maestro_fops = {
	.owner		= THIS_MODULE,
	.open           = maestro_exclusive_open,
	.release        = maestro_exclusive_release,
	.ioctl		= video_ioctl2,
};

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 radio_device *card = video_drvdata(file);

	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 radio_device *card = video_drvdata(file);

	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 radio_device *card = video_drvdata(file);

	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 radio_device *card = video_drvdata(file);

	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 radio_device *card = video_drvdata(file);
	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,
	.release	= video_device_release,
};

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	81
bec43661	82	static int maestro_exclusive_open(struct file *file)
3ca685aa HV	83	{
	84	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
	85	}
	86
bec43661	87	static int maestro_exclusive_release(struct file *file)
3ca685aa HV	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
bec43661	113	static const struct v4l2_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,
1da177e4 LT	118	};
1da177e4 LT	119
6a2cf8ee	120	struct radio_device {
0eaa21fd	121	u16 io, /* base of Maestro card radio io (GPIO_DATA)*/
1da177e4	122	muted, /* VIDEO_AUDIO_MUTE */
4286c6f6	123	stereo, /* VIDEO_TUNER_STEREO_ON */
1da177e4	124	tuned; /* signal strength (0 or 0xffff) */
89dad8f0	125	};
1da177e4	126
0eaa21fd	127	static u32 radio_bits_get(struct radio_device *dev)
1da177e4	128	{
0eaa21fd JS	129	register u16 io=dev->io, l, rdata;
	130	register u32 data=0;
	131	u16 omask;
6a2cf8ee	132
1da177e4 LT	133	omask = inw(io + IO_MASK);
	134	outw(~(STR_CLK \| STR_WREN), io + IO_MASK);
	135	outw(0, io);
	136	udelay(16);
	137
	138	for (l=24;l--;) {
	139	outw(STR_CLK, io); /* HI state */
	140	udelay(2);
4286c6f6	141	if(!l)
1da177e4 LT	142	dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff;
	143	outw(0, io); /* LO state */
	144	udelay(2);
	145	data <<= 1; /* shift data */
	146	rdata = inw(io);
	147	if(!l)
4286c6f6	148	dev->stereo = rdata & STR_MOST ?
b6055d7b	149	0 : 1;
1da177e4 LT	150	else
	151	if(rdata & STR_DATA)
	152	data++;
	153	udelay(2);
	154	}
6a2cf8ee	155
1da177e4 LT	156	if(dev->muted)
1da177e4 LT	157	outw(STR_WREN, io);
6a2cf8ee	158
1da177e4 LT	159	udelay(4);
1da177e4 LT	160	outw(omask, io + IO_MASK);
6a2cf8ee	161
1da177e4 LT	162	return data & 0x3ffe;
	163	}
	164
0eaa21fd	165	static void radio_bits_set(struct radio_device *dev, u32 data)
1da177e4	166	{
0eaa21fd JS	167	register u16 io=dev->io, l, bits;
0eaa21fd JS	168	u16 omask, odir;
6a2cf8ee	169
1da177e4 LT	170	omask = inw(io + IO_MASK);
	171	odir = (inw(io + IO_DIR) & ~STR_DATA) \| (STR_CLK \| STR_WREN);
	172	outw(odir \| STR_DATA, io + IO_DIR);
	173	outw(~(STR_DATA \| STR_CLK \| STR_WREN), io + IO_MASK);
	174	udelay(16);
	175	for (l=25;l;l--) {
	176	bits = ((data >> 18) & STR_DATA) \| STR_WREN ;
	177	data <<= 1; /* shift data */
	178	outw(bits, io); /* start strobe */
	179	udelay(2);
	180	outw(bits \| STR_CLK, io); /* HI level */
	181	udelay(2);
	182	outw(bits, io); /* LO level */
	183	udelay(4);
	184	}
6a2cf8ee	185
1da177e4 LT	186	if(!dev->muted)
1da177e4 LT	187	outw(0, io);
6a2cf8ee	188
1da177e4 LT	189	udelay(4);
	190	outw(omask, io + IO_MASK);
	191	outw(odir, io + IO_DIR);
	192	msleep(125);
	193	}
	194
d455cf5d DL	195	static int vidioc_querycap(struct file file, void priv,
	196	struct v4l2_capability *v)
	197	{
	198	strlcpy(v->driver, "radio-maestro", sizeof(v->driver));
	199	strlcpy(v->card, "Maestro Radio", sizeof(v->card));
	200	sprintf(v->bus_info, "PCI");
	201	v->version = RADIO_VERSION;
	202	v->capabilities = V4L2_CAP_TUNER;
	203	return 0;
	204	}
	205
	206	static int vidioc_g_tuner(struct file file, void priv,
	207	struct v4l2_tuner *v)
1da177e4	208	{
c170ecf4	209	struct radio_device *card = video_drvdata(file);
6a2cf8ee	210
d455cf5d DL	211	if (v->index > 0)
	212	return -EINVAL;
	213
	214	(void)radio_bits_get(card);
	215
	216	strcpy(v->name, "FM");
	217	v->type = V4L2_TUNER_RADIO;
	218	v->rangelow = FREQ_LO;
	219	v->rangehigh = FREQ_HI;
	220	v->rxsubchans = V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	221	v->capability = V4L2_TUNER_CAP_LOW;
	222	if(card->stereo)
	223	v->audmode = V4L2_TUNER_MODE_STEREO;
	224	else
	225	v->audmode = V4L2_TUNER_MODE_MONO;
	226	v->signal = card->tuned;
	227	return 0;
	228	}
b6055d7b	229
d455cf5d DL	230	static int vidioc_s_tuner(struct file file, void priv,
	231	struct v4l2_tuner *v)
	232	{
	233	if (v->index > 0)
	234	return -EINVAL;
	235	return 0;
	236	}
b6055d7b	237
d455cf5d DL	238	static int vidioc_s_frequency(struct file file, void priv,
	239	struct v4l2_frequency *f)
	240	{
c170ecf4	241	struct radio_device *card = video_drvdata(file);
b6055d7b	242
d455cf5d DL	243	if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI)
	244	return -EINVAL;
	245	radio_bits_set(card, FREQ2BITS(f->frequency));
	246	return 0;
	247	}
b6055d7b	248
d455cf5d DL	249	static int vidioc_g_frequency(struct file file, void priv,
	250	struct v4l2_frequency *f)
	251	{
c170ecf4	252	struct radio_device *card = video_drvdata(file);
b6055d7b	253
d455cf5d DL	254	f->type = V4L2_TUNER_RADIO;
	255	f->frequency = BITS2FREQ(radio_bits_get(card));
	256	return 0;
	257	}
b6055d7b	258
d455cf5d DL	259	static int vidioc_queryctrl(struct file file, void priv,
	260	struct v4l2_queryctrl *qc)
	261	{
	262	int i;
b6055d7b	263
d455cf5d DL	264	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	265	if (qc->id && qc->id == radio_qctrl[i].id) {
	266	memcpy(qc, &(radio_qctrl[i]),
	267	sizeof(*qc));
b6055d7b MCC	268	return 0;
b6055d7b MCC	269	}
d455cf5d DL	270	}
	271	return -EINVAL;
	272	}
b6055d7b	273
d455cf5d DL	274	static int vidioc_g_ctrl(struct file file, void priv,
	275	struct v4l2_control *ctrl)
	276	{
c170ecf4	277	struct radio_device *card = video_drvdata(file);
b6055d7b	278
d455cf5d DL	279	switch (ctrl->id) {
	280	case V4L2_CID_AUDIO_MUTE:
	281	ctrl->value = card->muted;
	282	return 0;
1da177e4	283	}
d455cf5d	284	return -EINVAL;
1da177e4 LT	285	}
1da177e4 LT	286
d455cf5d DL	287	static int vidioc_s_ctrl(struct file file, void priv,
d455cf5d DL	288	struct v4l2_control *ctrl)
1da177e4	289	{
c170ecf4	290	struct radio_device *card = video_drvdata(file);
d455cf5d DL	291	register u16 io = card->io;
	292	register u16 omask = inw(io + IO_MASK);
	293
	294	switch (ctrl->id) {
	295	case V4L2_CID_AUDIO_MUTE:
	296	outw(~STR_WREN, io + IO_MASK);
	297	outw((card->muted = ctrl->value ) ?
	298	STR_WREN : 0, io);
	299	udelay(4);
	300	outw(omask, io + IO_MASK);
	301	msleep(125);
	302	return 0;
	303	}
	304	return -EINVAL;
	305	}
1da177e4	306
d455cf5d DL	307	static int vidioc_g_audio(struct file file, void priv,
	308	struct v4l2_audio *a)
	309	{
	310	if (a->index > 1)
	311	return -EINVAL;
	312
	313	strcpy(a->name, "Radio");
	314	a->capability = V4L2_AUDCAP_STEREO;
	315	return 0;
	316	}
6a2cf8ee	317
d455cf5d DL	318	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	319	{
	320	*i = 0;
	321	return 0;
	322	}
	323
	324	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	325	{
	326	if (i != 0)
	327	return -EINVAL;
	328	return 0;
	329	}
	330
	331	static int vidioc_s_audio(struct file file, void priv,
	332	struct v4l2_audio *a)
	333	{
	334	if (a->index != 0)
	335	return -EINVAL;
	336	return 0;
1da177e4 LT	337	}
1da177e4 LT	338
0eaa21fd	339	static u16 __devinit radio_power_on(struct radio_device *dev)
1da177e4	340	{
0eaa21fd JS	341	register u16 io = dev->io;
	342	register u32 ofreq;
	343	u16 omask, odir;
6a2cf8ee	344
1da177e4	345	omask = inw(io + IO_MASK);
6a2cf8ee	346	odir = (inw(io + IO_DIR) & ~STR_DATA) \| (STR_CLK \| STR_WREN);
1da177e4	347	outw(odir & ~STR_WREN, io + IO_DIR);
b6055d7b	348	dev->muted = inw(io) & STR_WREN ? 0 : 1;
1da177e4 LT	349	outw(odir, io + IO_DIR);
	350	outw(~(STR_WREN \| STR_CLK), io + IO_MASK);
	351	outw(dev->muted ? 0 : STR_WREN, io);
	352	udelay(16);
	353	outw(omask, io + IO_MASK);
	354	ofreq = radio_bits_get(dev);
6a2cf8ee JS	355
6a2cf8ee JS	356	if ((ofreq < FREQ2BITS(FREQ_LO)) \|\| (ofreq > FREQ2BITS(FREQ_HI)))
1da177e4 LT	357	ofreq = FREQ2BITS(FREQ_LO);
1da177e4 LT	358	radio_bits_set(dev, ofreq);
6a2cf8ee	359
1da177e4 LT	360	return (ofreq == radio_bits_get(dev));
	361	}
	362
a399810c	363	static const struct v4l2_ioctl_ops maestro_ioctl_ops = {
d455cf5d DL	364	.vidioc_querycap = vidioc_querycap,
	365	.vidioc_g_tuner = vidioc_g_tuner,
	366	.vidioc_s_tuner = vidioc_s_tuner,
	367	.vidioc_g_audio = vidioc_g_audio,
	368	.vidioc_s_audio = vidioc_s_audio,
	369	.vidioc_g_input = vidioc_g_input,
	370	.vidioc_s_input = vidioc_s_input,
	371	.vidioc_g_frequency = vidioc_g_frequency,
	372	.vidioc_s_frequency = vidioc_s_frequency,
	373	.vidioc_queryctrl = vidioc_queryctrl,
	374	.vidioc_g_ctrl = vidioc_g_ctrl,
	375	.vidioc_s_ctrl = vidioc_s_ctrl,
	376	};
	377
a399810c HV	378	static struct video_device maestro_radio = {
a399810c HV	379	.name = "Maestro radio",
a399810c HV	380	.fops = &maestro_fops,
a399810c HV	381	.ioctl_ops = &maestro_ioctl_ops,
aa5e90af	382	.release = video_device_release,
a399810c HV	383	};
a399810c HV	384
89dad8f0 JS	385	static int __devinit maestro_probe(struct pci_dev *pdev,
89dad8f0 JS	386	const struct pci_device_id *ent)
1da177e4	387	{
89dad8f0 JS	388	struct radio_device *radio_unit;
	389	struct video_device *maestro_radio_inst;
	390	int retval;
	391
	392	retval = pci_enable_device(pdev);
	393	if (retval) {
	394	dev_err(&pdev->dev, "enabling pci device failed!\n");
	395	goto err;
	396	}
	397
	398	retval = -ENOMEM;
	399
	400	radio_unit = kzalloc(sizeof(*radio_unit), GFP_KERNEL);
	401	if (radio_unit == NULL) {
	402	dev_err(&pdev->dev, "not enough memory\n");
	403	goto err;
	404	}
	405
	406	radio_unit->io = pci_resource_start(pdev, 0) + GPIO_DATA;
89dad8f0 JS	407
	408	maestro_radio_inst = video_device_alloc();
	409	if (maestro_radio_inst == NULL) {
	410	dev_err(&pdev->dev, "not enough memory\n");
	411	goto errfr;
	412	}
	413
	414	memcpy(maestro_radio_inst, &maestro_radio, sizeof(maestro_radio));
	415	video_set_drvdata(maestro_radio_inst, radio_unit);
	416	pci_set_drvdata(pdev, maestro_radio_inst);
	417
cba99ae8	418	retval = video_register_device(maestro_radio_inst, VFL_TYPE_RADIO, radio_nr);
89dad8f0 JS	419	if (retval) {
	420	printk(KERN_ERR "can't register video device!\n");
	421	goto errfr1;
	422	}
	423
	424	if (!radio_power_on(radio_unit)) {
	425	retval = -EIO;
	426	goto errunr;
	427	}
	428
	429	dev_info(&pdev->dev, "version " DRIVER_VERSION " time " __TIME__ " "
6a2cf8ee	430	__DATE__ "\n");
89dad8f0 JS	431	dev_info(&pdev->dev, "radio chip initialized\n");
	432
	433	return 0;
	434	errunr:
	435	video_unregister_device(maestro_radio_inst);
	436	errfr1:
f37fdf3f	437	video_device_release(maestro_radio_inst);
89dad8f0 JS	438	errfr:
	439	kfree(radio_unit);
	440	err:
	441	return retval;
	442
	443	}
	444
	445	static void __devexit maestro_remove(struct pci_dev *pdev)
	446	{
	447	struct video_device *vdev = pci_get_drvdata(pdev);
	448
	449	video_unregister_device(vdev);
1da177e4 LT	450	}
1da177e4 LT	451
89dad8f0 JS	452	static int __init maestro_radio_init(void)
	453	{
	454	int retval = pci_register_driver(&maestro_r_driver);
	455
	456	if (retval)
	457	printk(KERN_ERR "error during registration pci driver\n");
	458
	459	return retval;
	460	}
	461
	462	static void __exit maestro_radio_exit(void)
	463	{
	464	pci_unregister_driver(&maestro_r_driver);
	465	}
	466
	467	module_init(maestro_radio_init);
	468	module_exit(maestro_radio_exit);
6a2cf8ee JS	469
	470	MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl");
	471	MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio.");
	472	MODULE_LICENSE("GPL");