[deliverable/linux.git] / drivers / media / radio / radio-maxiradio.c

/*
 * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
 * (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
 *
 * Based in the radio Maestro PCI driver. Actually it uses the same chip
 * for radio but different pci controller.
 *
 * I didn't have any specs I reversed engineered the protocol from
 * the windows driver (radio.dll).
 *
 * The card uses the TEA5757 chip that includes a search function but it
 * is useless as I haven't found any way to read back the frequency. If
 * anybody does please mail me.
 *
 * For the pdf file see:
 * http://www.semiconductors.philips.com/pip/TEA5757H/V1
 *
 *
 * CHANGES:
 *   0.75b
 *     - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
 *
 *   0.75      Sun Feb  4 22:51:27 EET 2001
 *     - tiding up
 *     - removed support for multiple devices as it didn't work anyway
 *
 * BUGS:
 *   - card unmutes if you change frequency
 *
 * (c) 2006, 2007 by Mauro Carvalho Chehab <mchehab@infradead.org>:
 *	- Conversion to V4L2 API
 *      - Uses video_ioctl2 for parsing and to add debug support
 */


#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/videodev2.h>
#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#include <linux/io.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>

MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
MODULE_LICENSE("GPL");

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

static int debug;

module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "activates debug info");

#define DRIVER_VERSION	"0.77"

#define RADIO_VERSION KERNEL_VERSION(0, 7, 7)

#define dprintk(dev, num, fmt, arg...) \
	v4l2_dbg(num, debug, &dev->v4l2_dev, fmt, ## arg)

#ifndef PCI_VENDOR_ID_GUILLEMOT
#define PCI_VENDOR_ID_GUILLEMOT 0x5046
#endif

#ifndef PCI_DEVICE_ID_GUILLEMOT
#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
#endif


/* TEA5757 pin mappings */
static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16;

#define FREQ_LO		(50 * 16000)
#define FREQ_HI		(150 * 16000)

#define FREQ_IF         171200 /* 10.7*16000   */
#define FREQ_STEP       200    /* 12.5*16      */

/* (x==fmhz*16*1000) -> bits */
#define FREQ2BITS(x) \
  ((((unsigned int)(x) + FREQ_IF + (FREQ_STEP << 1)) / (FREQ_STEP << 2)) << 2)

#define BITS2FREQ(x)	((x) * FREQ_STEP - FREQ_IF)


struct maxiradio
{
	struct v4l2_device v4l2_dev;
	struct video_device vdev;
	struct pci_dev *pdev;

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

	unsigned long freq;

	struct mutex lock;
};

static inline struct maxiradio *to_maxiradio(struct v4l2_device *v4l2_dev)
{
	return container_of(v4l2_dev, struct maxiradio, v4l2_dev);
}

static void outbit(unsigned long bit, u16 io)
{
	int val = power | wren | (bit ? data : 0);

	outb(val, io);
	udelay(4);
	outb(val | clk, io);
	udelay(4);
	outb(val, io);
	udelay(4);
}

static void turn_power(struct maxiradio *dev, int p)
{
	if (p != 0) {
		dprintk(dev, 1, "Radio powered on\n");
		outb(power, dev->io);
	} else {
		dprintk(dev, 1, "Radio powered off\n");
		outb(0, dev->io);
	}
}

static void set_freq(struct maxiradio *dev, u32 freq)
{
	unsigned long int si;
	int bl;
	int io = dev->io;
	int val = FREQ2BITS(freq);

	/* TEA5757 shift register bits (see pdf) */

	outbit(0, io); /* 24  search */
	outbit(1, io); /* 23  search up/down */

	outbit(0, io); /* 22  stereo/mono */

	outbit(0, io); /* 21  band */
	outbit(0, io); /* 20  band (only 00=FM works I think) */

	outbit(0, io); /* 19  port ? */
	outbit(0, io); /* 18  port ? */

	outbit(0, io); /* 17  search level */
	outbit(0, io); /* 16  search level */

	si = 0x8000;
	for (bl = 1; bl <= 16; bl++) {
		outbit(val & si, io);
		si >>= 1;
	}

	dprintk(dev, 1, "Radio freq set to %d.%02d MHz\n",
				freq / 16000,
				freq % 16000 * 100 / 16000);

	turn_power(dev, 1);
}

static int get_stereo(u16 io)
{
	outb(power,io);
	udelay(4);

	return !(inb(io) & mo_st);
}

static int get_tune(u16 io)
{
	outb(power+clk,io);
	udelay(4);

	return !(inb(io) & mo_st);
}


static int vidioc_querycap(struct file *file, void  *priv,
			    struct v4l2_capability *v)
{
	struct maxiradio *dev = video_drvdata(file);

	strlcpy(v->driver, "radio-maxiradio", sizeof(v->driver));
	strlcpy(v->card, "Maxi Radio FM2000 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 maxiradio *dev = video_drvdata(file);

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

	mutex_lock(&dev->lock);
	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 (get_stereo(dev->io))
		v->audmode = V4L2_TUNER_MODE_STEREO;
	else
		v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = 0xffff * get_tune(dev->io);
	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_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 vidioc_s_frequency(struct file *file, void *priv,
			       struct v4l2_frequency *f)
{
	struct maxiradio *dev = video_drvdata(file);

	if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) {
		dprintk(dev, 1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n",
					f->frequency / 16000,
					f->frequency % 16000 * 100 / 16000,
					FREQ_LO / 16000, FREQ_HI / 16000);

		return -EINVAL;
	}

	mutex_lock(&dev->lock);
	dev->freq = f->frequency;
	set_freq(dev, dev->freq);
	msleep(125);
	mutex_unlock(&dev->lock);

	return 0;
}

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

	f->type = V4L2_TUNER_RADIO;
	f->frequency = dev->freq;

	dprintk(dev, 4, "radio freq is %d.%02d MHz",
				f->frequency / 16000,
				f->frequency % 16000 * 100 / 16000);

	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 maxiradio *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 maxiradio *dev = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		mutex_lock(&dev->lock);
		dev->muted = ctrl->value;
		if (dev->muted)
			turn_power(dev, 0);
		else
			set_freq(dev, dev->freq);
		mutex_unlock(&dev->lock);
		return 0;
	}

	return -EINVAL;
}

static const struct v4l2_file_operations maxiradio_fops = {
	.owner		= THIS_MODULE,
	.ioctl          = video_ioctl2,
};

static const struct v4l2_ioctl_ops maxiradio_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 int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct maxiradio *dev;
	struct v4l2_device *v4l2_dev;
	int retval = -ENOMEM;

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

	v4l2_dev = &dev->v4l2_dev;
	mutex_init(&dev->lock);
	dev->pdev = pdev;
	dev->muted = 1;
	dev->freq = FREQ_LO;

	strlcpy(v4l2_dev->name, "maxiradio", 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;
	}

	if (!request_region(pci_resource_start(pdev, 0),
			   pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
		v4l2_err(v4l2_dev, "can't reserve I/O ports\n");
		goto err_out;
	}

	if (pci_enable_device(pdev))
		goto err_out_free_region;

	dev->io = pci_resource_start(pdev, 0);
	strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
	dev->vdev.v4l2_dev = v4l2_dev;
	dev->vdev.fops = &maxiradio_fops;
	dev->vdev.ioctl_ops = &maxiradio_ioctl_ops;
	dev->vdev.release = video_device_release_empty;
	video_set_drvdata(&dev->vdev, dev);

	if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
		v4l2_err(v4l2_dev, "can't register device!");
		goto err_out_free_region;
	}

	v4l2_info(v4l2_dev, "version " DRIVER_VERSION
			" time " __TIME__ "  " __DATE__ "\n");

	v4l2_info(v4l2_dev, "found Guillemot MAXI Radio device (io = 0x%x)\n",
	       dev->io);
	return 0;

err_out_free_region:
	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
err_out:
	v4l2_device_unregister(v4l2_dev);
errfr:
	kfree(dev);
	return -ENODEV;
}

static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
{
	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
	struct maxiradio *dev = to_maxiradio(v4l2_dev);

	video_unregister_device(&dev->vdev);
	v4l2_device_unregister(&dev->v4l2_dev);
	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
}

static struct pci_device_id maxiradio_pci_tbl[] = {
	{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
		PCI_ANY_ID, PCI_ANY_ID, },
	{ 0 }
};

MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);

static struct pci_driver maxiradio_driver = {
	.name		= "radio-maxiradio",
	.id_table	= maxiradio_pci_tbl,
	.probe		= maxiradio_init_one,
	.remove		= __devexit_p(maxiradio_remove_one),
};

static int __init maxiradio_radio_init(void)
{
	return pci_register_driver(&maxiradio_driver);
}

static void __exit maxiradio_radio_exit(void)
{
	pci_unregister_driver(&maxiradio_driver);
}

module_init(maxiradio_radio_init);
module_exit(maxiradio_radio_exit);
Commit	Line	Data
4286c6f6 MCC	1	/*
4286c6f6 MCC	2	* Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
1da177e4 LT	3	* (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
	4	*
	5	* Based in the radio Maestro PCI driver. Actually it uses the same chip
	6	* for radio but different pci controller.
	7	*
	8	* I didn't have any specs I reversed engineered the protocol from
4286c6f6	9	* the windows driver (radio.dll).
1da177e4 LT	10	*
1da177e4 LT	11	* The card uses the TEA5757 chip that includes a search function but it
4286c6f6	12	* is useless as I haven't found any way to read back the frequency. If
1da177e4 LT	13	* anybody does please mail me.
	14	*
	15	* For the pdf file see:
	16	* http://www.semiconductors.philips.com/pip/TEA5757H/V1
	17	*
	18	*
	19	* CHANGES:
	20	* 0.75b
	21	* - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
	22	*
e84fef6b	23	* 0.75 Sun Feb 4 22:51:27 EET 2001
1da177e4 LT	24	* - tiding up
	25	* - removed support for multiple devices as it didn't work anyway
	26	*
4286c6f6	27	* BUGS:
1da177e4 LT	28	* - card unmutes if you change frequency
1da177e4 LT	29	*
06470ed6 MCC	30	* (c) 2006, 2007 by Mauro Carvalho Chehab <mchehab@infradead.org>:
	31	* - Conversion to V4L2 API
	32	* - Uses video_ioctl2 for parsing and to add debug support
1da177e4 LT	33	*/
	34
	35
	36	#include <linux/module.h>
	37	#include <linux/init.h>
	38	#include <linux/ioport.h>
	39	#include <linux/delay.h>
3593cab5	40	#include <linux/mutex.h>
1da177e4	41	#include <linux/pci.h>
e84fef6b	42	#include <linux/videodev2.h>
2710e6aa HV	43	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
2710e6aa HV	44	#include <linux/io.h>
2710e6aa	45	#include <media/v4l2-device.h>
35ea11ff	46	#include <media/v4l2-ioctl.h>
1da177e4	47
2710e6aa HV	48	MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
	49	MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
	50	MODULE_LICENSE("GPL");
	51
	52	static int radio_nr = -1;
	53	module_param(radio_nr, int, 0);
	54
	55	static int debug;
	56
	57	module_param(debug, int, 0644);
	58	MODULE_PARM_DESC(debug, "activates debug info");
	59
f1557ceb	60	#define DRIVER_VERSION "0.77"
e84fef6b	61
2710e6aa HV	62	#define RADIO_VERSION KERNEL_VERSION(0, 7, 7)
	63
	64	#define dprintk(dev, num, fmt, arg...) \
	65	v4l2_dbg(num, debug, &dev->v4l2_dev, fmt, ## arg)
1da177e4 LT	66
	67	#ifndef PCI_VENDOR_ID_GUILLEMOT
	68	#define PCI_VENDOR_ID_GUILLEMOT 0x5046
	69	#endif
	70
	71	#ifndef PCI_DEVICE_ID_GUILLEMOT
	72	#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
	73	#endif
	74
	75
	76	/* TEA5757 pin mappings */
2710e6aa	77	static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16;
1da177e4	78
2710e6aa HV	79	#define FREQ_LO (50 * 16000)
2710e6aa HV	80	#define FREQ_HI (150 * 16000)
1da177e4 LT	81
	82	#define FREQ_IF 171200 /* 10.716000 /
	83	#define FREQ_STEP 200 /* 12.516 /
	84
f1557ceb	85	/* (x==fmhz161000) -> bits */
2710e6aa HV	86	#define FREQ2BITS(x) \
2710e6aa HV	87	((((unsigned int)(x) + FREQ_IF + (FREQ_STEP << 1)) / (FREQ_STEP << 2)) << 2)
1da177e4 LT	88
	89	#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
	90
	91
2710e6aa	92	struct maxiradio
3ca685aa	93	{
2710e6aa HV	94	struct v4l2_device v4l2_dev;
	95	struct video_device vdev;
	96	struct pci_dev *pdev;
1da177e4	97
2710e6aa HV	98	u16 io; /* base of radio io */
	99	u16 muted; /* VIDEO_AUDIO_MUTE */
	100	u16 stereo; /* VIDEO_TUNER_STEREO_ON */
	101	u16 tuned; /* signal strength (0 or 0xffff) */
4286c6f6	102
1da177e4	103	unsigned long freq;
4286c6f6	104
3593cab5	105	struct mutex lock;
712642b8	106	};
1da177e4	107
2710e6aa	108	static inline struct maxiradio to_maxiradio(struct v4l2_device v4l2_dev)
1da177e4	109	{
2710e6aa	110	return container_of(v4l2_dev, struct maxiradio, v4l2_dev);
1da177e4 LT	111	}
1da177e4 LT	112
2710e6aa HV	113	static void outbit(unsigned long bit, u16 io)
	114	{
	115	int val = power \| wren \| (bit ? data : 0);
	116
	117	outb(val, io);
	118	udelay(4);
	119	outb(val \| clk, io);
	120	udelay(4);
	121	outb(val, io);
	122	udelay(4);
	123	}
	124
	125	static void turn_power(struct maxiradio *dev, int p)
1da177e4	126	{
f1557ceb	127	if (p != 0) {
2710e6aa HV	128	dprintk(dev, 1, "Radio powered on\n");
2710e6aa HV	129	outb(power, dev->io);
f1557ceb	130	} else {
2710e6aa HV	131	dprintk(dev, 1, "Radio powered off\n");
2710e6aa HV	132	outb(0, dev->io);
f1557ceb	133	}
1da177e4 LT	134	}
1da177e4 LT	135
2710e6aa	136	static void set_freq(struct maxiradio *dev, u32 freq)
1da177e4 LT	137	{
	138	unsigned long int si;
	139	int bl;
2710e6aa	140	int io = dev->io;
c6eb8eaf	141	int val = FREQ2BITS(freq);
4286c6f6	142
1da177e4 LT	143	/* TEA5757 shift register bits (see pdf) */
1da177e4 LT	144
c6eb8eaf HV	145	outbit(0, io); /* 24 search */
c6eb8eaf HV	146	outbit(1, io); /* 23 search up/down */
4286c6f6	147
c6eb8eaf	148	outbit(0, io); /* 22 stereo/mono */
1da177e4	149
c6eb8eaf HV	150	outbit(0, io); /* 21 band */
c6eb8eaf HV	151	outbit(0, io); /* 20 band (only 00=FM works I think) */
1da177e4	152
c6eb8eaf HV	153	outbit(0, io); /* 19 port ? */
c6eb8eaf HV	154	outbit(0, io); /* 18 port ? */
4286c6f6	155
c6eb8eaf HV	156	outbit(0, io); /* 17 search level */
c6eb8eaf HV	157	outbit(0, io); /* 16 search level */
4286c6f6	158
1da177e4	159	si = 0x8000;
c6eb8eaf HV	160	for (bl = 1; bl <= 16; bl++) {
	161	outbit(val & si, io);
	162	si >>= 1;
f1557ceb	163	}
4286c6f6	164
2710e6aa	165	dprintk(dev, 1, "Radio freq set to %d.%02d MHz\n",
f1557ceb MCC	166	freq / 16000,
	167	freq % 16000 * 100 / 16000);
	168
2710e6aa	169	turn_power(dev, 1);
1da177e4 LT	170	}
1da177e4 LT	171
2710e6aa	172	static int get_stereo(u16 io)
4286c6f6	173	{
f1557ceb MCC	174	outb(power,io);
	175	udelay(4);
	176
1da177e4 LT	177	return !(inb(io) & mo_st);
	178	}
	179
2710e6aa	180	static int get_tune(u16 io)
4286c6f6	181	{
f1557ceb MCC	182	outb(power+clk,io);
	183	udelay(4);
	184
1da177e4 LT	185	return !(inb(io) & mo_st);
	186	}
	187
	188
2710e6aa	189	static int vidioc_querycap(struct file file, void priv,
06470ed6 MCC	190	struct v4l2_capability *v)
06470ed6 MCC	191	{
2710e6aa	192	struct maxiradio *dev = video_drvdata(file);
06470ed6	193
2710e6aa HV	194	strlcpy(v->driver, "radio-maxiradio", sizeof(v->driver));
	195	strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof(v->card));
	196	snprintf(v->bus_info, sizeof(v->bus_info), "PCI:%s", pci_name(dev->pdev));
	197	v->version = RADIO_VERSION;
	198	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
06470ed6 MCC	199	return 0;
	200	}
	201
2710e6aa	202	static int vidioc_g_tuner(struct file file, void priv,
06470ed6	203	struct v4l2_tuner *v)
1da177e4	204	{
2710e6aa	205	struct maxiradio *dev = video_drvdata(file);
1da177e4	206
06470ed6 MCC	207	if (v->index > 0)
06470ed6 MCC	208	return -EINVAL;
e84fef6b	209
2710e6aa HV	210	mutex_lock(&dev->lock);
2710e6aa HV	211	strlcpy(v->name, "FM", sizeof(v->name));
06470ed6	212	v->type = V4L2_TUNER_RADIO;
2710e6aa HV	213	v->rangelow = FREQ_LO;
	214	v->rangehigh = FREQ_HI;
	215	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
	216	v->capability = V4L2_TUNER_CAP_LOW;
	217	if (get_stereo(dev->io))
06470ed6 MCC	218	v->audmode = V4L2_TUNER_MODE_STEREO;
	219	else
	220	v->audmode = V4L2_TUNER_MODE_MONO;
2710e6aa HV	221	v->signal = 0xffff * get_tune(dev->io);
2710e6aa HV	222	mutex_unlock(&dev->lock);
4286c6f6	223
06470ed6 MCC	224	return 0;
06470ed6 MCC	225	}
e84fef6b	226
2710e6aa	227	static int vidioc_s_tuner(struct file file, void priv,
06470ed6 MCC	228	struct v4l2_tuner *v)
06470ed6 MCC	229	{
2710e6aa	230	return v->index ? -EINVAL : 0;
140dcc46 MCC	231	}
140dcc46 MCC	232
a0c05ab9 MCC	233	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	234	{
	235	*i = 0;
	236	return 0;
	237	}
	238
	239	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	240	{
2710e6aa HV	241	return i ? -EINVAL : 0;
2710e6aa HV	242	}
f1557ceb	243
2710e6aa HV	244	static int vidioc_g_audio(struct file file, void priv,
	245	struct v4l2_audio *a)
	246	{
	247	a->index = 0;
	248	strlcpy(a->name, "Radio", sizeof(a->name));
	249	a->capability = V4L2_AUDCAP_STEREO;
a0c05ab9 MCC	250	return 0;
	251	}
	252
	253
2710e6aa	254	static int vidioc_s_audio(struct file file, void priv,
140dcc46 MCC	255	struct v4l2_audio *a)
140dcc46 MCC	256	{
2710e6aa	257	return a->index ? -EINVAL : 0;
140dcc46 MCC	258	}
140dcc46 MCC	259
2710e6aa	260	static int vidioc_s_frequency(struct file file, void priv,
06470ed6 MCC	261	struct v4l2_frequency *f)
06470ed6 MCC	262	{
2710e6aa	263	struct maxiradio *dev = video_drvdata(file);
4286c6f6	264
f1557ceb	265	if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI) {
2710e6aa	266	dprintk(dev, 1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n",
f1557ceb MCC	267	f->frequency / 16000,
	268	f->frequency % 16000 * 100 / 16000,
	269	FREQ_LO / 16000, FREQ_HI / 16000);
	270
06470ed6	271	return -EINVAL;
f1557ceb	272	}
4286c6f6	273
2710e6aa HV	274	mutex_lock(&dev->lock);
	275	dev->freq = f->frequency;
	276	set_freq(dev, dev->freq);
06470ed6	277	msleep(125);
2710e6aa	278	mutex_unlock(&dev->lock);
e84fef6b	279
06470ed6 MCC	280	return 0;
06470ed6 MCC	281	}
4286c6f6	282
2710e6aa	283	static int vidioc_g_frequency(struct file file, void priv,
06470ed6 MCC	284	struct v4l2_frequency *f)
06470ed6 MCC	285	{
2710e6aa	286	struct maxiradio *dev = video_drvdata(file);
4286c6f6	287
06470ed6	288	f->type = V4L2_TUNER_RADIO;
2710e6aa	289	f->frequency = dev->freq;
06470ed6	290
2710e6aa	291	dprintk(dev, 4, "radio freq is %d.%02d MHz",
f1557ceb MCC	292	f->frequency / 16000,
	293	f->frequency % 16000 * 100 / 16000);
	294
06470ed6 MCC	295	return 0;
	296	}
	297
2710e6aa	298	static int vidioc_queryctrl(struct file file, void priv,
06470ed6 MCC	299	struct v4l2_queryctrl *qc)
06470ed6 MCC	300	{
2710e6aa HV	301	switch (qc->id) {
	302	case V4L2_CID_AUDIO_MUTE:
	303	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
06470ed6 MCC	304	}
	305	return -EINVAL;
	306	}
e84fef6b	307
2710e6aa HV	308	static int vidioc_g_ctrl(struct file file, void priv,
2710e6aa HV	309	struct v4l2_control *ctrl)
06470ed6	310	{
2710e6aa	311	struct maxiradio *dev = video_drvdata(file);
e84fef6b	312
06470ed6	313	switch (ctrl->id) {
2710e6aa HV	314	case V4L2_CID_AUDIO_MUTE:
	315	ctrl->value = dev->muted;
	316	return 0;
1da177e4	317	}
f1557ceb	318
06470ed6	319	return -EINVAL;
1da177e4 LT	320	}
1da177e4 LT	321
2710e6aa HV	322	static int vidioc_s_ctrl(struct file file, void priv,
2710e6aa HV	323	struct v4l2_control *ctrl)
1da177e4	324	{
2710e6aa	325	struct maxiradio *dev = video_drvdata(file);
4286c6f6	326
06470ed6	327	switch (ctrl->id) {
2710e6aa HV	328	case V4L2_CID_AUDIO_MUTE:
	329	mutex_lock(&dev->lock);
	330	dev->muted = ctrl->value;
	331	if (dev->muted)
	332	turn_power(dev, 0);
	333	else
	334	set_freq(dev, dev->freq);
	335	mutex_unlock(&dev->lock);
	336	return 0;
06470ed6	337	}
f1557ceb	338
06470ed6	339	return -EINVAL;
1da177e4 LT	340	}
1da177e4 LT	341
2710e6aa HV	342	static const struct v4l2_file_operations maxiradio_fops = {
2710e6aa HV	343	.owner = THIS_MODULE,
2710e6aa HV	344	.ioctl = video_ioctl2,
	345	};
	346
a399810c	347	static const struct v4l2_ioctl_ops maxiradio_ioctl_ops = {
06470ed6 MCC	348	.vidioc_querycap = vidioc_querycap,
	349	.vidioc_g_tuner = vidioc_g_tuner,
	350	.vidioc_s_tuner = vidioc_s_tuner,
140dcc46 MCC	351	.vidioc_g_audio = vidioc_g_audio,
140dcc46 MCC	352	.vidioc_s_audio = vidioc_s_audio,
a0c05ab9 MCC	353	.vidioc_g_input = vidioc_g_input,
a0c05ab9 MCC	354	.vidioc_s_input = vidioc_s_input,
06470ed6 MCC	355	.vidioc_g_frequency = vidioc_g_frequency,
	356	.vidioc_s_frequency = vidioc_s_frequency,
	357	.vidioc_queryctrl = vidioc_queryctrl,
	358	.vidioc_g_ctrl = vidioc_g_ctrl,
	359	.vidioc_s_ctrl = vidioc_s_ctrl,
06470ed6	360	};
1da177e4 LT	361
	362	static int __devinit maxiradio_init_one(struct pci_dev pdev, const struct pci_device_id ent)
	363	{
2710e6aa HV	364	struct maxiradio *dev;
	365	struct v4l2_device *v4l2_dev;
	366	int retval = -ENOMEM;
	367
	368	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	369	if (dev == NULL) {
	370	dev_err(&pdev->dev, "not enough memory\n");
	371	return -ENOMEM;
	372	}
	373
	374	v4l2_dev = &dev->v4l2_dev;
	375	mutex_init(&dev->lock);
	376	dev->pdev = pdev;
	377	dev->muted = 1;
	378	dev->freq = FREQ_LO;
	379
	380	strlcpy(v4l2_dev->name, "maxiradio", sizeof(v4l2_dev->name));
	381
	382	retval = v4l2_device_register(&pdev->dev, v4l2_dev);
	383	if (retval < 0) {
	384	v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
	385	goto errfr;
	386	}
	387
	388	if (!request_region(pci_resource_start(pdev, 0),
4286c6f6	389	pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
2710e6aa	390	v4l2_err(v4l2_dev, "can't reserve I/O ports\n");
4286c6f6	391	goto err_out;
1da177e4 LT	392	}
	393
	394	if (pci_enable_device(pdev))
4286c6f6	395	goto err_out_free_region;
1da177e4	396
2710e6aa HV	397	dev->io = pci_resource_start(pdev, 0);
	398	strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
	399	dev->vdev.v4l2_dev = v4l2_dev;
	400	dev->vdev.fops = &maxiradio_fops;
	401	dev->vdev.ioctl_ops = &maxiradio_ioctl_ops;
	402	dev->vdev.release = video_device_release_empty;
	403	video_set_drvdata(&dev->vdev, dev);
1da177e4	404
2710e6aa HV	405	if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
2710e6aa HV	406	v4l2_err(v4l2_dev, "can't register device!");
4286c6f6	407	goto err_out_free_region;
1da177e4 LT	408	}
1da177e4 LT	409
2710e6aa HV	410	v4l2_info(v4l2_dev, "version " DRIVER_VERSION
2710e6aa HV	411	" time " __TIME__ " " __DATE__ "\n");
1da177e4	412
2710e6aa HV	413	v4l2_info(v4l2_dev, "found Guillemot MAXI Radio device (io = 0x%x)\n",
2710e6aa HV	414	dev->io);
1da177e4 LT	415	return 0;
	416
	417	err_out_free_region:
	418	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
	419	err_out:
2710e6aa HV	420	v4l2_device_unregister(v4l2_dev);
	421	errfr:
	422	kfree(dev);
1da177e4 LT	423	return -ENODEV;
	424	}
	425
	426	static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
	427	{
2710e6aa HV	428	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
	429	struct maxiradio *dev = to_maxiradio(v4l2_dev);
	430
	431	video_unregister_device(&dev->vdev);
	432	v4l2_device_unregister(&dev->v4l2_dev);
1da177e4 LT	433	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
	434	}
	435
	436	static struct pci_device_id maxiradio_pci_tbl[] = {
	437	{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
	438	PCI_ANY_ID, PCI_ANY_ID, },
2710e6aa	439	{ 0 }
1da177e4 LT	440	};
	441
	442	MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
	443
	444	static struct pci_driver maxiradio_driver = {
	445	.name = "radio-maxiradio",
	446	.id_table = maxiradio_pci_tbl,
	447	.probe = maxiradio_init_one,
	448	.remove = __devexit_p(maxiradio_remove_one),
	449	};
	450
	451	static int __init maxiradio_radio_init(void)
	452	{
9bfab8ce	453	return pci_register_driver(&maxiradio_driver);
1da177e4 LT	454	}
	455
	456	static void __exit maxiradio_radio_exit(void)
	457	{
	458	pci_unregister_driver(&maxiradio_driver);
	459	}
	460
	461	module_init(maxiradio_radio_init);
	462	module_exit(maxiradio_radio_exit);