[deliverable/linux.git] / sound / i2c / other / tea575x-tuner.c

/*
 *   ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips
 *
 *	Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <asm/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/version.h>
#include <sound/core.h>
#include <sound/tea575x-tuner.h>

MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips");
MODULE_LICENSE("GPL");

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

#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
#define FREQ_LO		 (87 * 16000)
#define FREQ_HI		(108 * 16000)

/*
 * definitions
 */

#define TEA575X_BIT_SEARCH	(1<<24)		/* 1 = search action, 0 = tuned */
#define TEA575X_BIT_UPDOWN	(1<<23)		/* 0 = search down, 1 = search up */
#define TEA575X_BIT_MONO	(1<<22)		/* 0 = stereo, 1 = mono */
#define TEA575X_BIT_BAND_MASK	(3<<20)
#define TEA575X_BIT_BAND_FM	(0<<20)
#define TEA575X_BIT_BAND_MW	(1<<20)
#define TEA575X_BIT_BAND_LW	(1<<21)
#define TEA575X_BIT_BAND_SW	(1<<22)
#define TEA575X_BIT_PORT_0	(1<<19)		/* user bit */
#define TEA575X_BIT_PORT_1	(1<<18)		/* user bit */
#define TEA575X_BIT_SEARCH_MASK	(3<<16)		/* search level */
#define TEA575X_BIT_SEARCH_5_28	     (0<<16)	/* FM >5uV, AM >28uV */
#define TEA575X_BIT_SEARCH_10_40     (1<<16)	/* FM >10uV, AM > 40uV */
#define TEA575X_BIT_SEARCH_30_63     (2<<16)	/* FM >30uV, AM > 63uV */
#define TEA575X_BIT_SEARCH_150_1000  (3<<16)	/* FM > 150uV, AM > 1000uV */
#define TEA575X_BIT_DUMMY	(1<<15)		/* buffer */
#define TEA575X_BIT_FREQ_MASK	0x7fff

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,
	}
};

/*
 * lowlevel part
 */

static void snd_tea575x_set_freq(struct snd_tea575x *tea)
{
	unsigned long freq;

	freq = tea->freq / 16;		/* to kHz */
	if (freq > 108000)
		freq = 108000;
	if (freq < 87000)
		freq = 87000;
	/* crystal fixup */
	if (tea->tea5759)
		freq -= tea->freq_fixup;
	else
		freq += tea->freq_fixup;
	/* freq /= 12.5 */
	freq *= 10;
	freq /= 125;

	tea->val &= ~TEA575X_BIT_FREQ_MASK;
	tea->val |= freq & TEA575X_BIT_FREQ_MASK;
	tea->ops->write(tea, tea->val);
}

/*
 * Linux Video interface
 */

static int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	struct snd_tea575x *tea = video_drvdata(file);

	strcpy(v->card, tea->tea5759 ? "TEA5759" : "TEA5757");
	strlcpy(v->driver, "tea575x-tuner", 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)
{
	if (v->index > 0)
		return -EINVAL;

	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;
	v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = 0xffff;
	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_g_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct snd_tea575x *tea = video_drvdata(file);

	f->type = V4L2_TUNER_RADIO;
	f->frequency = tea->freq;
	return 0;
}

static int vidioc_s_frequency(struct file *file, void *priv,
					struct v4l2_frequency *f)
{
	struct snd_tea575x *tea = video_drvdata(file);

	if (f->frequency < FREQ_LO || f->frequency > FREQ_HI)
		return -EINVAL;

	tea->freq = f->frequency;

	snd_tea575x_set_freq(tea);

	return 0;
}

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_s_audio(struct file *file, void *priv,
					struct v4l2_audio *a)
{
	if (a->index != 0)
		return -EINVAL;
	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 snd_tea575x *tea = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (tea->ops->mute) {
			ctrl->value = tea->mute;
			return 0;
		}
	}
	return -EINVAL;
}

static int vidioc_s_ctrl(struct file *file, void *priv,
					struct v4l2_control *ctrl)
{
	struct snd_tea575x *tea = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (tea->ops->mute) {
			tea->ops->mute(tea, ctrl->value);
			tea->mute = ctrl->value;
			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)
{
	if (i != 0)
		return -EINVAL;
	return 0;
}

static int snd_tea575x_exclusive_open(struct file *file)
{
	struct snd_tea575x *tea = video_drvdata(file);

	return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0;
}

static int snd_tea575x_exclusive_release(struct file *file)
{
	struct snd_tea575x *tea = video_drvdata(file);

	clear_bit(0, &tea->in_use);
	return 0;
}

static const struct v4l2_file_operations tea575x_fops = {
	.owner		= THIS_MODULE,
	.open           = snd_tea575x_exclusive_open,
	.release        = snd_tea575x_exclusive_release,
	.ioctl		= video_ioctl2,
};

static const struct v4l2_ioctl_ops tea575x_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 tea575x_radio = {
	.name           = "tea575x-tuner",
	.fops           = &tea575x_fops,
	.ioctl_ops 	= &tea575x_ioctl_ops,
	.release	= video_device_release,
};

/*
 * initialize all the tea575x chips
 */
void snd_tea575x_init(struct snd_tea575x *tea)
{
	int retval;
	unsigned int val;
	struct video_device *tea575x_radio_inst;

	val = tea->ops->read(tea);
	if (val == 0x1ffffff || val == 0) {
		snd_printk(KERN_ERR
			   "tea575x-tuner: Cannot find TEA575x chip\n");
		return;
	}

	tea->in_use = 0;
	tea->val = TEA575X_BIT_BAND_FM | TEA575X_BIT_SEARCH_10_40;
	tea->freq = 90500 * 16;		/* 90.5Mhz default */

	tea575x_radio_inst = video_device_alloc();
	if (tea575x_radio_inst == NULL) {
		printk(KERN_ERR "tea575x-tuner: not enough memory\n");
		return;
	}

	memcpy(tea575x_radio_inst, &tea575x_radio, sizeof(tea575x_radio));

	strcpy(tea575x_radio.name, tea->tea5759 ?
				   "TEA5759 radio" : "TEA5757 radio");

	video_set_drvdata(tea575x_radio_inst, tea);

	retval = video_register_device(tea575x_radio_inst,
				       VFL_TYPE_RADIO, radio_nr);
	if (retval) {
		printk(KERN_ERR "tea575x-tuner: can't register video device!\n");
		kfree(tea575x_radio_inst);
		return;
	}

	snd_tea575x_set_freq(tea);

	/* mute on init */
	if (tea->ops->mute) {
		tea->ops->mute(tea, 1);
		tea->mute = 1;
	}
	tea->vd = tea575x_radio_inst;
}

void snd_tea575x_exit(struct snd_tea575x *tea)
{
	if (tea->vd) {
		video_unregister_device(tea->vd);
		tea->vd = NULL;
	}
}

static int __init alsa_tea575x_module_init(void)
{
	return 0;
}

static void __exit alsa_tea575x_module_exit(void)
{
}

module_init(alsa_tea575x_module_init)
module_exit(alsa_tea575x_module_exit)

EXPORT_SYMBOL(snd_tea575x_init);
EXPORT_SYMBOL(snd_tea575x_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips
	3	*
c1017a4c	4	* Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	5	*
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
4b29631d	21	*/
1da177e4	22
1da177e4 LT	23	#include <asm/io.h>
	24	#include <linux/delay.h>
	25	#include <linux/interrupt.h>
	26	#include <linux/init.h>
9b76ede4	27	#include <linux/version.h>
1da177e4 LT	28	#include <sound/core.h>
	29	#include <sound/tea575x-tuner.h>
	30
c1017a4c	31	MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
1da177e4 LT	32	MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips");
	33	MODULE_LICENSE("GPL");
	34
9b76ede4 MCC	35	static int radio_nr = -1;
	36	module_param(radio_nr, int, 0);
	37
	38	#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
	39	#define FREQ_LO (87 * 16000)
	40	#define FREQ_HI (108 * 16000)
	41
1da177e4 LT	42	/*
	43	* definitions
	44	*/
	45
	46	#define TEA575X_BIT_SEARCH (1<<24) /* 1 = search action, 0 = tuned */
	47	#define TEA575X_BIT_UPDOWN (1<<23) /* 0 = search down, 1 = search up */
	48	#define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */
	49	#define TEA575X_BIT_BAND_MASK (3<<20)
	50	#define TEA575X_BIT_BAND_FM (0<<20)
	51	#define TEA575X_BIT_BAND_MW (1<<20)
	52	#define TEA575X_BIT_BAND_LW (1<<21)
	53	#define TEA575X_BIT_BAND_SW (1<<22)
	54	#define TEA575X_BIT_PORT_0 (1<<19) /* user bit */
	55	#define TEA575X_BIT_PORT_1 (1<<18) /* user bit */
	56	#define TEA575X_BIT_SEARCH_MASK (3<<16) /* search level */
	57	#define TEA575X_BIT_SEARCH_5_28 (0<<16) /* FM >5uV, AM >28uV */
	58	#define TEA575X_BIT_SEARCH_10_40 (1<<16) /* FM >10uV, AM > 40uV */
	59	#define TEA575X_BIT_SEARCH_30_63 (2<<16) /* FM >30uV, AM > 63uV */
	60	#define TEA575X_BIT_SEARCH_150_1000 (3<<16) /* FM > 150uV, AM > 1000uV */
	61	#define TEA575X_BIT_DUMMY (1<<15) /* buffer */
	62	#define TEA575X_BIT_FREQ_MASK 0x7fff
	63
9b76ede4 MCC	64	static struct v4l2_queryctrl radio_qctrl[] = {
	65	{
	66	.id = V4L2_CID_AUDIO_MUTE,
	67	.name = "Mute",
	68	.minimum = 0,
	69	.maximum = 1,
	70	.default_value = 1,
	71	.type = V4L2_CTRL_TYPE_BOOLEAN,
	72	}
	73	};
	74
1da177e4 LT	75	/*
	76	* lowlevel part
	77	*/
	78
97f02e05	79	static void snd_tea575x_set_freq(struct snd_tea575x *tea)
1da177e4 LT	80	{
	81	unsigned long freq;
	82
	83	freq = tea->freq / 16; /* to kHz */
	84	if (freq > 108000)
	85	freq = 108000;
	86	if (freq < 87000)
	87	freq = 87000;
	88	/* crystal fixup */
	89	if (tea->tea5759)
	90	freq -= tea->freq_fixup;
	91	else
	92	freq += tea->freq_fixup;
	93	/* freq /= 12.5 */
	94	freq *= 10;
	95	freq /= 125;
	96
	97	tea->val &= ~TEA575X_BIT_FREQ_MASK;
	98	tea->val \|= freq & TEA575X_BIT_FREQ_MASK;
	99	tea->ops->write(tea, tea->val);
	100	}
	101
	102	/*
	103	* Linux Video interface
	104	*/
	105
9b76ede4 MCC	106	static int vidioc_querycap(struct file file, void priv,
9b76ede4 MCC	107	struct v4l2_capability *v)
1da177e4	108	{
c170ecf4	109	struct snd_tea575x *tea = video_drvdata(file);
9b76ede4 MCC	110
	111	strcpy(v->card, tea->tea5759 ? "TEA5759" : "TEA5757");
	112	strlcpy(v->driver, "tea575x-tuner", sizeof(v->driver));
	113	strlcpy(v->card, "Maestro Radio", sizeof(v->card));
	114	sprintf(v->bus_info, "PCI");
	115	v->version = RADIO_VERSION;
	116	v->capabilities = V4L2_CAP_TUNER;
	117	return 0;
	118	}
	119
	120	static int vidioc_g_tuner(struct file file, void priv,
	121	struct v4l2_tuner *v)
	122	{
	123	if (v->index > 0)
	124	return -EINVAL;
	125
	126	strcpy(v->name, "FM");
	127	v->type = V4L2_TUNER_RADIO;
	128	v->rangelow = FREQ_LO;
	129	v->rangehigh = FREQ_HI;
	130	v->rxsubchans = V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	131	v->capability = V4L2_TUNER_CAP_LOW;
	132	v->audmode = V4L2_TUNER_MODE_MONO;
	133	v->signal = 0xffff;
	134	return 0;
	135	}
	136
	137	static int vidioc_s_tuner(struct file file, void priv,
	138	struct v4l2_tuner *v)
	139	{
	140	if (v->index > 0)
	141	return -EINVAL;
	142	return 0;
	143	}
	144
	145	static int vidioc_g_frequency(struct file file, void priv,
	146	struct v4l2_frequency *f)
	147	{
	148	struct snd_tea575x *tea = video_drvdata(file);
	149
	150	f->type = V4L2_TUNER_RADIO;
	151	f->frequency = tea->freq;
	152	return 0;
	153	}
	154
	155	static int vidioc_s_frequency(struct file file, void priv,
	156	struct v4l2_frequency *f)
	157	{
	158	struct snd_tea575x *tea = video_drvdata(file);
	159
	160	if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI)
	161	return -EINVAL;
	162
	163	tea->freq = f->frequency;
	164
	165	snd_tea575x_set_freq(tea);
	166
	167	return 0;
	168	}
	169
	170	static int vidioc_g_audio(struct file file, void priv,
	171	struct v4l2_audio *a)
	172	{
	173	if (a->index > 1)
174	return -EINVAL;
175
176	strcpy(a->name, "Radio");
177	a->capability = V4L2_AUDCAP_STEREO;
178	return 0;
179	}
180
181	static int vidioc_s_audio(struct file file, void priv,
182	struct v4l2_audio *a)
183	{
184	if (a->index != 0)
185	return -EINVAL;
186	return 0;
187	}
188
189	static int vidioc_queryctrl(struct file file, void priv,
190	struct v4l2_queryctrl *qc)
191	{
192	int i;
193
194	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
195	if (qc->id && qc->id == radio_qctrl[i].id) {
196	memcpy(qc, &(radio_qctrl[i]),
197	sizeof(*qc));
1da177e4 LT	198	return 0;
1da177e4 LT	199	}
9b76ede4 MCC	200	}
	201	return -EINVAL;
	202	}
	203
	204	static int vidioc_g_ctrl(struct file file, void priv,
	205	struct v4l2_control *ctrl)
	206	{
	207	struct snd_tea575x *tea = video_drvdata(file);
	208
	209	switch (ctrl->id) {
	210	case V4L2_CID_AUDIO_MUTE:
	211	if (tea->ops->mute) {
	212	ctrl->value = tea->mute;
4b29631d	213	return 0;
1da177e4	214	}
9b76ede4 MCC	215	}
	216	return -EINVAL;
	217	}
	218
	219	static int vidioc_s_ctrl(struct file file, void priv,
	220	struct v4l2_control *ctrl)
	221	{
	222	struct snd_tea575x *tea = video_drvdata(file);
	223
	224	switch (ctrl->id) {
	225	case V4L2_CID_AUDIO_MUTE:
	226	if (tea->ops->mute) {
	227	tea->ops->mute(tea, ctrl->value);
1233faa8	228	tea->mute = ctrl->value;
1da177e4 LT	229	return 0;
1da177e4 LT	230	}
1da177e4	231	}
9b76ede4 MCC	232	return -EINVAL;
	233	}
	234
	235	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	236	{
	237	*i = 0;
	238	return 0;
1da177e4 LT	239	}
1da177e4 LT	240
9b76ede4	241	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
1da177e4	242	{
9b76ede4 MCC	243	if (i != 0)
	244	return -EINVAL;
	245	return 0;
1da177e4 LT	246	}
1da177e4 LT	247
bec43661	248	static int snd_tea575x_exclusive_open(struct file *file)
2f3d0025	249	{
c170ecf4	250	struct snd_tea575x *tea = video_drvdata(file);
2f3d0025 HV	251
	252	return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0;
	253	}
	254
bec43661	255	static int snd_tea575x_exclusive_release(struct file *file)
2f3d0025	256	{
c170ecf4	257	struct snd_tea575x *tea = video_drvdata(file);
2f3d0025 HV	258
	259	clear_bit(0, &tea->in_use);
	260	return 0;
	261	}
	262
9b76ede4 MCC	263	static const struct v4l2_file_operations tea575x_fops = {
	264	.owner = THIS_MODULE,
	265	.open = snd_tea575x_exclusive_open,
	266	.release = snd_tea575x_exclusive_release,
	267	.ioctl = video_ioctl2,
	268	};
	269
	270	static const struct v4l2_ioctl_ops tea575x_ioctl_ops = {
	271	.vidioc_querycap = vidioc_querycap,
	272	.vidioc_g_tuner = vidioc_g_tuner,
	273	.vidioc_s_tuner = vidioc_s_tuner,
	274	.vidioc_g_audio = vidioc_g_audio,
	275	.vidioc_s_audio = vidioc_s_audio,
	276	.vidioc_g_input = vidioc_g_input,
	277	.vidioc_s_input = vidioc_s_input,
	278	.vidioc_g_frequency = vidioc_g_frequency,
	279	.vidioc_s_frequency = vidioc_s_frequency,
	280	.vidioc_queryctrl = vidioc_queryctrl,
	281	.vidioc_g_ctrl = vidioc_g_ctrl,
	282	.vidioc_s_ctrl = vidioc_s_ctrl,
	283	};
	284
	285	static struct video_device tea575x_radio = {
	286	.name = "tea575x-tuner",
	287	.fops = &tea575x_fops,
	288	.ioctl_ops = &tea575x_ioctl_ops,
	289	.release = video_device_release,
	290	};
	291
1da177e4 LT	292	/*
	293	* initialize all the tea575x chips
	294	*/
97f02e05	295	void snd_tea575x_init(struct snd_tea575x *tea)
1da177e4	296	{
9b76ede4	297	int retval;
1da177e4	298	unsigned int val;
9b76ede4	299	struct video_device *tea575x_radio_inst;
1da177e4 LT	300
	301	val = tea->ops->read(tea);
	302	if (val == 0x1ffffff \|\| val == 0) {
9b76ede4 MCC	303	snd_printk(KERN_ERR
9b76ede4 MCC	304	"tea575x-tuner: Cannot find TEA575x chip\n");
1da177e4 LT	305	return;
	306	}
	307
2f3d0025	308	tea->in_use = 0;
9b76ede4 MCC	309	tea->val = TEA575X_BIT_BAND_FM \| TEA575X_BIT_SEARCH_10_40;
	310	tea->freq = 90500 * 16; /* 90.5Mhz default */
	311
	312	tea575x_radio_inst = video_device_alloc();
	313	if (tea575x_radio_inst == NULL) {
	314	printk(KERN_ERR "tea575x-tuner: not enough memory\n");
1da177e4 LT	315	return;
1da177e4 LT	316	}
1da177e4	317
9b76ede4 MCC	318	memcpy(tea575x_radio_inst, &tea575x_radio, sizeof(tea575x_radio));
	319
	320	strcpy(tea575x_radio.name, tea->tea5759 ?
	321	"TEA5759 radio" : "TEA5757 radio");
	322
	323	video_set_drvdata(tea575x_radio_inst, tea);
	324
	325	retval = video_register_device(tea575x_radio_inst,
	326	VFL_TYPE_RADIO, radio_nr);
	327	if (retval) {
	328	printk(KERN_ERR "tea575x-tuner: can't register video device!\n");
	329	kfree(tea575x_radio_inst);
	330	return;
	331	}
1da177e4 LT	332
1da177e4 LT	333	snd_tea575x_set_freq(tea);
69252128 AS	334
69252128 AS	335	/* mute on init */
9b76ede4	336	if (tea->ops->mute) {
69252128	337	tea->ops->mute(tea, 1);
9b76ede4 MCC	338	tea->mute = 1;
	339	}
	340	tea->vd = tea575x_radio_inst;
1da177e4 LT	341	}
1da177e4 LT	342
97f02e05	343	void snd_tea575x_exit(struct snd_tea575x *tea)
1da177e4	344	{
9b76ede4 MCC	345	if (tea->vd) {
	346	video_unregister_device(tea->vd);
	347	tea->vd = NULL;
1da177e4 LT	348	}
	349	}
	350
	351	static int __init alsa_tea575x_module_init(void)
	352	{
	353	return 0;
	354	}
4b29631d	355
1da177e4 LT	356	static void __exit alsa_tea575x_module_exit(void)
	357	{
	358	}
4b29631d	359
1da177e4 LT	360	module_init(alsa_tea575x_module_init)
	361	module_exit(alsa_tea575x_module_exit)
	362
	363	EXPORT_SYMBOL(snd_tea575x_init);
	364	EXPORT_SYMBOL(snd_tea575x_exit);