[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
 *
 * 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 <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#include <linux/pci.h>
#include <linux/videodev2.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>

MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl");
MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio.");
MODULE_LICENSE("GPL");

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

#define RADIO_VERSION KERNEL_VERSION(0, 0, 6)
#define DRIVER_VERSION	"0.06"

#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)

struct maestro {
	struct v4l2_device v4l2_dev;
	struct video_device vdev;
	struct pci_dev *pdev;
	struct mutex lock;

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

static inline struct maestro *to_maestro(struct v4l2_device *v4l2_dev)
{
	return container_of(v4l2_dev, struct maestro, v4l2_dev);
}

static u32 radio_bits_get(struct maestro *dev)
{
	u16 io = dev->io, l, rdata;
	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 maestro *dev, u32 data)
{
	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)
{
	struct maestro *dev = video_drvdata(file);

	strlcpy(v->driver, "radio-maestro", sizeof(v->driver));
	strlcpy(v->card, "Maestro Radio", sizeof(v->card));
	snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(dev->pdev));
	v->version = RADIO_VERSION;
	v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
	return 0;
}

static int vidioc_g_tuner(struct file *file, void *priv,
					struct v4l2_tuner *v)
{
	struct maestro *dev = video_drvdata(file);

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

	mutex_lock(&dev->lock);
	radio_bits_get(dev);

	strlcpy(v->name, "FM", sizeof(v->name));
	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 (dev->stereo)
		v->audmode = V4L2_TUNER_MODE_STEREO;
	else
		v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = dev->tuned;
	mutex_unlock(&dev->lock);
	return 0;
}

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

static int vidioc_s_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct maestro *dev = video_drvdata(file);

	if (f->frequency < FREQ_LO || f->frequency > FREQ_HI)
		return -EINVAL;
	mutex_lock(&dev->lock);
	radio_bits_set(dev, FREQ2BITS(f->frequency));
	mutex_unlock(&dev->lock);
	return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct maestro *dev = video_drvdata(file);

	f->type = V4L2_TUNER_RADIO;
	mutex_lock(&dev->lock);
	f->frequency = BITS2FREQ(radio_bits_get(dev));
	mutex_unlock(&dev->lock);
	return 0;
}

static int vidioc_queryctrl(struct file *file, void *priv,
					struct v4l2_queryctrl *qc)
{
	switch (qc->id) {
	case V4L2_CID_AUDIO_MUTE:
		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	}
	return -EINVAL;
}

static int vidioc_g_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct maestro *dev = video_drvdata(file);

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

static int vidioc_s_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct maestro *dev = video_drvdata(file);
	u16 io = dev->io;
	u16 omask;

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

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)
{
	return i ? -EINVAL : 0;
}

static int vidioc_g_audio(struct file *file, void *priv,
					struct v4l2_audio *a)
{
	a->index = 0;
	strlcpy(a->name, "Radio", sizeof(a->name));
	a->capability = V4L2_AUDCAP_STEREO;
	return 0;
}

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

static int maestro_open(struct file *file)
{
	return 0;
}

static int maestro_release(struct file *file)
{
	return 0;
}

static const struct v4l2_file_operations maestro_fops = {
	.owner		= THIS_MODULE,
	.open           = maestro_open,
	.release        = maestro_release,
	.ioctl		= video_ioctl2,
};

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 u16 __devinit radio_power_on(struct maestro *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 int __devinit maestro_probe(struct pci_dev *pdev,
	const struct pci_device_id *ent)
{
	struct maestro *dev;
	struct v4l2_device *v4l2_dev;
	int retval;

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

	retval = -ENOMEM;

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

	v4l2_dev = &dev->v4l2_dev;
	mutex_init(&dev->lock);
	dev->pdev = pdev;

	strlcpy(v4l2_dev->name, "maestro", sizeof(v4l2_dev->name));

	retval = v4l2_device_register(&pdev->dev, v4l2_dev);
	if (retval < 0) {
		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
		goto errfr;
	}

	dev->io = pci_resource_start(pdev, 0) + GPIO_DATA;

	strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
	dev->vdev.v4l2_dev = v4l2_dev;
	dev->vdev.fops = &maestro_fops;
	dev->vdev.ioctl_ops = &maestro_ioctl_ops;
	dev->vdev.release = video_device_release_empty;
	video_set_drvdata(&dev->vdev, dev);

	retval = video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr);
	if (retval) {
		v4l2_err(v4l2_dev, "can't register video device!\n");
		goto errfr1;
	}

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

	v4l2_info(v4l2_dev, "version " DRIVER_VERSION "\n");

	return 0;
errunr:
	video_unregister_device(&dev->vdev);
errfr1:
	v4l2_device_unregister(v4l2_dev);
errfr:
	kfree(dev);
err:
	return retval;

}

static void __devexit maestro_remove(struct pci_dev *pdev)
{
	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
	struct maestro *dev = to_maestro(v4l2_dev);

	video_unregister_device(&dev->vdev);
	v4l2_device_unregister(&dev->v4l2_dev);
}

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 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);
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>
087c6184	25	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
1da177e4	26	#include <linux/pci.h>
b6055d7b	27	#include <linux/videodev2.h>
087c6184 HV	28	#include <linux/io.h>
	29	#include <linux/uaccess.h>
	30	#include <media/v4l2-device.h>
35ea11ff	31	#include <media/v4l2-ioctl.h>
3593cab5	32
087c6184 HV	33	MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl");
	34	MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio.");
	35	MODULE_LICENSE("GPL");
b6055d7b	36
087c6184 HV	37	static int radio_nr = -1;
	38	module_param(radio_nr, int, 0);
	39
	40	#define RADIO_VERSION KERNEL_VERSION(0, 0, 6)
	41	#define DRIVER_VERSION "0.06"
1da177e4	42
6a2cf8ee	43	#define GPIO_DATA 0x60 /* port offset from ESS_IO_BASE */
1da177e4 LT	44
	45	#define IO_MASK 4 /* mask register offset from GPIO_DATA
	46	bits 1=unmask write to given bit */
	47	#define IO_DIR 8 /* direction register offset from GPIO_DATA
	48	bits 0/1=read/write direction */
	49
6a2cf8ee JS	50	#define GPIO6 0x0040 /* mask bits for GPIO lines */
	51	#define GPIO7 0x0080
	52	#define GPIO8 0x0100
	53	#define GPIO9 0x0200
1da177e4	54
6a2cf8ee JS	55	#define STR_DATA GPIO6 /* radio TEA5757 pins and GPIO bits */
	56	#define STR_CLK GPIO7
	57	#define STR_WREN GPIO8
	58	#define STR_MOST GPIO9
1da177e4 LT	59
	60	#define FREQ_LO 50*16000
	61	#define FREQ_HI 150*16000
	62
6a2cf8ee JS	63	#define FREQ_IF 171200 /* 10.716000 /
6a2cf8ee JS	64	#define FREQ_STEP 200 /* 12.516 /
1da177e4 LT	65
	66	#define FREQ2BITS(x) ((((unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
	67	/(FREQ_STEP<<2))<<2) /* (x==fmhz161000) -> bits */
	68
	69	#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
	70
087c6184 HV	71	struct maestro {
	72	struct v4l2_device v4l2_dev;
	73	struct video_device vdev;
	74	struct pci_dev *pdev;
	75	struct mutex lock;
1da177e4	76
087c6184 HV	77	u16 io; /* base of Maestro card radio io (GPIO_DATA)*/
	78	u16 muted; /* VIDEO_AUDIO_MUTE */
	79	u16 stereo; /* VIDEO_TUNER_STEREO_ON */
	80	u16 tuned; /* signal strength (0 or 0xffff) */
	81	};
3ca685aa	82
087c6184	83	static inline struct maestro to_maestro(struct v4l2_device v4l2_dev)
3ca685aa	84	{
087c6184	85	return container_of(v4l2_dev, struct maestro, v4l2_dev);
3ca685aa HV	86	}
3ca685aa HV	87
087c6184	88	static u32 radio_bits_get(struct maestro *dev)
3ca685aa	89	{
087c6184 HV	90	u16 io = dev->io, l, rdata;
087c6184 HV	91	u32 data = 0;
0eaa21fd	92	u16 omask;
6a2cf8ee	93
1da177e4 LT	94	omask = inw(io + IO_MASK);
	95	outw(~(STR_CLK \| STR_WREN), io + IO_MASK);
	96	outw(0, io);
	97	udelay(16);
	98
087c6184	99	for (l = 24; l--;) {
1da177e4 LT	100	outw(STR_CLK, io); /* HI state */
1da177e4 LT	101	udelay(2);
087c6184	102	if (!l)
1da177e4 LT	103	dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff;
	104	outw(0, io); /* LO state */
	105	udelay(2);
	106	data <<= 1; /* shift data */
	107	rdata = inw(io);
087c6184 HV	108	if (!l)
	109	dev->stereo = (rdata & STR_MOST) ? 0 : 1;
	110	else if (rdata & STR_DATA)
	111	data++;
1da177e4 LT	112	udelay(2);
1da177e4 LT	113	}
6a2cf8ee	114
087c6184	115	if (dev->muted)
1da177e4	116	outw(STR_WREN, io);
6a2cf8ee	117
1da177e4 LT	118	udelay(4);
1da177e4 LT	119	outw(omask, io + IO_MASK);
6a2cf8ee	120
1da177e4 LT	121	return data & 0x3ffe;
	122	}
	123
087c6184	124	static void radio_bits_set(struct maestro *dev, u32 data)
1da177e4	125	{
087c6184	126	u16 io = dev->io, l, bits;
0eaa21fd	127	u16 omask, odir;
6a2cf8ee	128
1da177e4	129	omask = inw(io + IO_MASK);
087c6184	130	odir = (inw(io + IO_DIR) & ~STR_DATA) \| (STR_CLK \| STR_WREN);
1da177e4 LT	131	outw(odir \| STR_DATA, io + IO_DIR);
	132	outw(~(STR_DATA \| STR_CLK \| STR_WREN), io + IO_MASK);
	133	udelay(16);
087c6184 HV	134	for (l = 25; l; l--) {
087c6184 HV	135	bits = ((data >> 18) & STR_DATA) \| STR_WREN;
1da177e4 LT	136	data <<= 1; /* shift data */
	137	outw(bits, io); /* start strobe */
	138	udelay(2);
	139	outw(bits \| STR_CLK, io); /* HI level */
	140	udelay(2);
	141	outw(bits, io); /* LO level */
	142	udelay(4);
	143	}
6a2cf8ee	144
087c6184	145	if (!dev->muted)
1da177e4	146	outw(0, io);
6a2cf8ee	147
1da177e4 LT	148	udelay(4);
	149	outw(omask, io + IO_MASK);
	150	outw(odir, io + IO_DIR);
	151	msleep(125);
	152	}
	153
d455cf5d DL	154	static int vidioc_querycap(struct file file, void priv,
	155	struct v4l2_capability *v)
	156	{
087c6184 HV	157	struct maestro *dev = video_drvdata(file);
087c6184 HV	158
d455cf5d DL	159	strlcpy(v->driver, "radio-maestro", sizeof(v->driver));
d455cf5d DL	160	strlcpy(v->card, "Maestro Radio", sizeof(v->card));
087c6184	161	snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(dev->pdev));
d455cf5d	162	v->version = RADIO_VERSION;
087c6184	163	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
d455cf5d DL	164	return 0;
	165	}
	166
	167	static int vidioc_g_tuner(struct file file, void priv,
	168	struct v4l2_tuner *v)
1da177e4	169	{
087c6184	170	struct maestro *dev = video_drvdata(file);
6a2cf8ee	171
d455cf5d DL	172	if (v->index > 0)
	173	return -EINVAL;
	174
087c6184 HV	175	mutex_lock(&dev->lock);
087c6184 HV	176	radio_bits_get(dev);
d455cf5d	177
087c6184	178	strlcpy(v->name, "FM", sizeof(v->name));
d455cf5d DL	179	v->type = V4L2_TUNER_RADIO;
	180	v->rangelow = FREQ_LO;
	181	v->rangehigh = FREQ_HI;
087c6184	182	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
d455cf5d	183	v->capability = V4L2_TUNER_CAP_LOW;
087c6184	184	if (dev->stereo)
d455cf5d DL	185	v->audmode = V4L2_TUNER_MODE_STEREO;
	186	else
	187	v->audmode = V4L2_TUNER_MODE_MONO;
087c6184 HV	188	v->signal = dev->tuned;
087c6184 HV	189	mutex_unlock(&dev->lock);
d455cf5d DL	190	return 0;
d455cf5d DL	191	}
b6055d7b	192
d455cf5d DL	193	static int vidioc_s_tuner(struct file file, void priv,
	194	struct v4l2_tuner *v)
	195	{
087c6184	196	return v->index ? -EINVAL : 0;
d455cf5d	197	}
b6055d7b	198
d455cf5d DL	199	static int vidioc_s_frequency(struct file file, void priv,
	200	struct v4l2_frequency *f)
	201	{
087c6184	202	struct maestro *dev = video_drvdata(file);
b6055d7b	203
d455cf5d DL	204	if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI)
d455cf5d DL	205	return -EINVAL;
087c6184 HV	206	mutex_lock(&dev->lock);
	207	radio_bits_set(dev, FREQ2BITS(f->frequency));
	208	mutex_unlock(&dev->lock);
d455cf5d DL	209	return 0;
d455cf5d DL	210	}
b6055d7b	211
d455cf5d DL	212	static int vidioc_g_frequency(struct file file, void priv,
	213	struct v4l2_frequency *f)
	214	{
087c6184	215	struct maestro *dev = video_drvdata(file);
b6055d7b	216
d455cf5d	217	f->type = V4L2_TUNER_RADIO;
087c6184 HV	218	mutex_lock(&dev->lock);
	219	f->frequency = BITS2FREQ(radio_bits_get(dev));
	220	mutex_unlock(&dev->lock);
d455cf5d DL	221	return 0;
d455cf5d DL	222	}
b6055d7b	223
d455cf5d DL	224	static int vidioc_queryctrl(struct file file, void priv,
	225	struct v4l2_queryctrl *qc)
	226	{
087c6184 HV	227	switch (qc->id) {
	228	case V4L2_CID_AUDIO_MUTE:
	229	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
d455cf5d DL	230	}
	231	return -EINVAL;
	232	}
b6055d7b	233
d455cf5d DL	234	static int vidioc_g_ctrl(struct file file, void priv,
	235	struct v4l2_control *ctrl)
	236	{
087c6184	237	struct maestro *dev = video_drvdata(file);
b6055d7b	238
d455cf5d DL	239	switch (ctrl->id) {
d455cf5d DL	240	case V4L2_CID_AUDIO_MUTE:
087c6184	241	ctrl->value = dev->muted;
d455cf5d	242	return 0;
1da177e4	243	}
d455cf5d	244	return -EINVAL;
1da177e4 LT	245	}
1da177e4 LT	246
d455cf5d DL	247	static int vidioc_s_ctrl(struct file file, void priv,
d455cf5d DL	248	struct v4l2_control *ctrl)
1da177e4	249	{
087c6184 HV	250	struct maestro *dev = video_drvdata(file);
	251	u16 io = dev->io;
	252	u16 omask;
d455cf5d DL	253
	254	switch (ctrl->id) {
	255	case V4L2_CID_AUDIO_MUTE:
087c6184 HV	256	mutex_lock(&dev->lock);
087c6184 HV	257	omask = inw(io + IO_MASK);
d455cf5d	258	outw(~STR_WREN, io + IO_MASK);
087c6184 HV	259	dev->muted = ctrl->value;
087c6184 HV	260	outw(dev->muted ? STR_WREN : 0, io);
d455cf5d DL	261	udelay(4);
	262	outw(omask, io + IO_MASK);
	263	msleep(125);
087c6184	264	mutex_unlock(&dev->lock);
d455cf5d DL	265	return 0;
	266	}
	267	return -EINVAL;
	268	}
1da177e4	269
087c6184 HV	270	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	271	{
	272	*i = 0;
	273	return 0;
	274	}
	275
	276	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	277	{
	278	return i ? -EINVAL : 0;
	279	}
	280
d455cf5d DL	281	static int vidioc_g_audio(struct file file, void priv,
	282	struct v4l2_audio *a)
	283	{
087c6184 HV	284	a->index = 0;
087c6184 HV	285	strlcpy(a->name, "Radio", sizeof(a->name));
d455cf5d DL	286	a->capability = V4L2_AUDCAP_STEREO;
	287	return 0;
	288	}
6a2cf8ee	289
087c6184 HV	290	static int vidioc_s_audio(struct file file, void priv,
087c6184 HV	291	struct v4l2_audio *a)
d455cf5d	292	{
087c6184	293	return a->index ? -EINVAL : 0;
d455cf5d DL	294	}
d455cf5d DL	295
087c6184	296	static int maestro_open(struct file *file)
d455cf5d	297	{
d455cf5d DL	298	return 0;
	299	}
	300
087c6184	301	static int maestro_release(struct file *file)
d455cf5d	302	{
d455cf5d	303	return 0;
1da177e4 LT	304	}
1da177e4 LT	305
087c6184 HV	306	static const struct v4l2_file_operations maestro_fops = {
	307	.owner = THIS_MODULE,
	308	.open = maestro_open,
	309	.release = maestro_release,
	310	.ioctl = video_ioctl2,
	311	};
	312
	313	static const struct v4l2_ioctl_ops maestro_ioctl_ops = {
	314	.vidioc_querycap = vidioc_querycap,
	315	.vidioc_g_tuner = vidioc_g_tuner,
	316	.vidioc_s_tuner = vidioc_s_tuner,
	317	.vidioc_g_audio = vidioc_g_audio,
	318	.vidioc_s_audio = vidioc_s_audio,
	319	.vidioc_g_input = vidioc_g_input,
	320	.vidioc_s_input = vidioc_s_input,
	321	.vidioc_g_frequency = vidioc_g_frequency,
	322	.vidioc_s_frequency = vidioc_s_frequency,
	323	.vidioc_queryctrl = vidioc_queryctrl,
	324	.vidioc_g_ctrl = vidioc_g_ctrl,
	325	.vidioc_s_ctrl = vidioc_s_ctrl,
	326	};
	327
	328	static u16 __devinit radio_power_on(struct maestro *dev)
1da177e4	329	{
0eaa21fd JS	330	register u16 io = dev->io;
	331	register u32 ofreq;
	332	u16 omask, odir;
6a2cf8ee	333
1da177e4	334	omask = inw(io + IO_MASK);
6a2cf8ee	335	odir = (inw(io + IO_DIR) & ~STR_DATA) \| (STR_CLK \| STR_WREN);
1da177e4	336	outw(odir & ~STR_WREN, io + IO_DIR);
b6055d7b	337	dev->muted = inw(io) & STR_WREN ? 0 : 1;
1da177e4 LT	338	outw(odir, io + IO_DIR);
	339	outw(~(STR_WREN \| STR_CLK), io + IO_MASK);
	340	outw(dev->muted ? 0 : STR_WREN, io);
	341	udelay(16);
	342	outw(omask, io + IO_MASK);
	343	ofreq = radio_bits_get(dev);
6a2cf8ee JS	344
6a2cf8ee JS	345	if ((ofreq < FREQ2BITS(FREQ_LO)) \|\| (ofreq > FREQ2BITS(FREQ_HI)))
1da177e4 LT	346	ofreq = FREQ2BITS(FREQ_LO);
1da177e4 LT	347	radio_bits_set(dev, ofreq);
6a2cf8ee	348
1da177e4 LT	349	return (ofreq == radio_bits_get(dev));
	350	}
	351
89dad8f0 JS	352	static int __devinit maestro_probe(struct pci_dev *pdev,
89dad8f0 JS	353	const struct pci_device_id *ent)
1da177e4	354	{
087c6184 HV	355	struct maestro *dev;
087c6184 HV	356	struct v4l2_device *v4l2_dev;
89dad8f0 JS	357	int retval;
	358
	359	retval = pci_enable_device(pdev);
	360	if (retval) {
	361	dev_err(&pdev->dev, "enabling pci device failed!\n");
	362	goto err;
	363	}
	364
	365	retval = -ENOMEM;
	366
087c6184 HV	367	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
087c6184 HV	368	if (dev == NULL) {
89dad8f0 JS	369	dev_err(&pdev->dev, "not enough memory\n");
	370	goto err;
	371	}
	372
087c6184 HV	373	v4l2_dev = &dev->v4l2_dev;
	374	mutex_init(&dev->lock);
	375	dev->pdev = pdev;
89dad8f0	376
087c6184 HV	377	strlcpy(v4l2_dev->name, "maestro", sizeof(v4l2_dev->name));
	378
	379	retval = v4l2_device_register(&pdev->dev, v4l2_dev);
	380	if (retval < 0) {
	381	v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
89dad8f0 JS	382	goto errfr;
	383	}
	384
087c6184	385	dev->io = pci_resource_start(pdev, 0) + GPIO_DATA;
89dad8f0	386
087c6184 HV	387	strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
	388	dev->vdev.v4l2_dev = v4l2_dev;
	389	dev->vdev.fops = &maestro_fops;
	390	dev->vdev.ioctl_ops = &maestro_ioctl_ops;
	391	dev->vdev.release = video_device_release_empty;
	392	video_set_drvdata(&dev->vdev, dev);
	393
	394	retval = video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr);
89dad8f0	395	if (retval) {
087c6184	396	v4l2_err(v4l2_dev, "can't register video device!\n");
89dad8f0 JS	397	goto errfr1;
	398	}
	399
087c6184	400	if (!radio_power_on(dev)) {
89dad8f0 JS	401	retval = -EIO;
	402	goto errunr;
	403	}
	404
087c6184	405	v4l2_info(v4l2_dev, "version " DRIVER_VERSION "\n");
89dad8f0 JS	406
	407	return 0;
	408	errunr:
087c6184	409	video_unregister_device(&dev->vdev);
89dad8f0	410	errfr1:
087c6184	411	v4l2_device_unregister(v4l2_dev);
89dad8f0	412	errfr:
087c6184	413	kfree(dev);
89dad8f0 JS	414	err:
	415	return retval;
	416
	417	}
	418
	419	static void __devexit maestro_remove(struct pci_dev *pdev)
	420	{
087c6184 HV	421	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
087c6184 HV	422	struct maestro *dev = to_maestro(v4l2_dev);
89dad8f0	423
087c6184 HV	424	video_unregister_device(&dev->vdev);
087c6184 HV	425	v4l2_device_unregister(&dev->v4l2_dev);
1da177e4 LT	426	}
1da177e4 LT	427
087c6184 HV	428	static struct pci_device_id maestro_r_pci_tbl[] = {
	429	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968),
	430	.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
	431	.class_mask = 0xffff00 },
	432	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978),
	433	.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
	434	.class_mask = 0xffff00 },
	435	{ 0 }
	436	};
	437	MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl);
	438
	439	static struct pci_driver maestro_r_driver = {
	440	.name = "maestro_radio",
	441	.id_table = maestro_r_pci_tbl,
	442	.probe = maestro_probe,
	443	.remove = __devexit_p(maestro_remove),
	444	};
	445
89dad8f0 JS	446	static int __init maestro_radio_init(void)
	447	{
	448	int retval = pci_register_driver(&maestro_r_driver);
	449
	450	if (retval)
	451	printk(KERN_ERR "error during registration pci driver\n");
	452
	453	return retval;
	454	}
	455
	456	static void __exit maestro_radio_exit(void)
	457	{
	458	pci_unregister_driver(&maestro_r_driver);
	459	}
	460
	461	module_init(maestro_radio_init);
	462	module_exit(maestro_radio_exit);