[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/init.h>
#include <linux/slab.h>
#include <linux/version.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-ioctl.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		 (50UL * 16000)
#define FREQ_HI		(150UL * 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

/*
 * lowlevel part
 */

static void snd_tea575x_write(struct snd_tea575x *tea, unsigned int val)
{
	u16 l;
	u8 data;

	tea->ops->set_direction(tea, 1);
	udelay(16);

	for (l = 25; l > 0; l--) {
		data = (val >> 24) & TEA575X_DATA;
		val <<= 1;			/* shift data */
		tea->ops->set_pins(tea, data | TEA575X_WREN);
		udelay(2);
		tea->ops->set_pins(tea, data | TEA575X_WREN | TEA575X_CLK);
		udelay(2);
		tea->ops->set_pins(tea, data | TEA575X_WREN);
		udelay(2);
	}

	if (!tea->mute)
		tea->ops->set_pins(tea, 0);
}

static unsigned int snd_tea575x_read(struct snd_tea575x *tea)
{
	u16 l, rdata;
	u32 data = 0;

	tea->ops->set_direction(tea, 0);
	tea->ops->set_pins(tea, 0);
	udelay(16);

	for (l = 24; l--;) {
		tea->ops->set_pins(tea, TEA575X_CLK);
		udelay(2);
		if (!l)
			tea->tuned = tea->ops->get_pins(tea) & TEA575X_MOST ? 0 : 1;
		tea->ops->set_pins(tea, 0);
		udelay(2);
		data <<= 1;			/* shift data */
		rdata = tea->ops->get_pins(tea);
		if (!l)
			tea->stereo = (rdata & TEA575X_MOST) ?  0 : 1;
		if (rdata & TEA575X_DATA)
			data++;
		udelay(2);
	}

	if (tea->mute)
		tea->ops->set_pins(tea, TEA575X_WREN);

	return data;
}

static void snd_tea575x_get_freq(struct snd_tea575x *tea)
{
	unsigned long freq;

	freq = snd_tea575x_read(tea) & TEA575X_BIT_FREQ_MASK;
	/* freq *= 12.5 */
	freq *= 125;
	freq /= 10;
	/* crystal fixup */
	if (tea->tea5759)
		freq += TEA575X_FMIF;
	else
		freq -= TEA575X_FMIF;

	tea->freq = freq * 16;		/* from kHz */
}

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

	freq = clamp(tea->freq, FREQ_LO, FREQ_HI);
	freq /= 16;		/* to kHz */
	/* crystal fixup */
	if (tea->tea5759)
		freq -= TEA575X_FMIF;
	else
		freq += TEA575X_FMIF;
	/* freq /= 12.5 */
	freq *= 10;
	freq /= 125;

	tea->val &= ~TEA575X_BIT_FREQ_MASK;
	tea->val |= freq & TEA575X_BIT_FREQ_MASK;
	snd_tea575x_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);

	strlcpy(v->driver, "tea575x-tuner", sizeof(v->driver));
	strlcpy(v->card, tea->card, sizeof(v->card));
	strlcat(v->card, tea->tea5759 ? " TEA5759" : " TEA5757", sizeof(v->card));
	strlcpy(v->bus_info, tea->bus_info, sizeof(v->bus_info));
	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 snd_tea575x *tea = video_drvdata(file);

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

	snd_tea575x_read(tea);

	strcpy(v->name, "FM");
	v->type = V4L2_TUNER_RADIO;
	v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
	v->rangelow = FREQ_LO;
	v->rangehigh = FREQ_HI;
	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
	v->audmode = tea->stereo ? V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO;
	v->signal = tea->tuned ? 0xffff : 0;

	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);

	if (f->tuner != 0)
		return -EINVAL;
	f->type = V4L2_TUNER_RADIO;
	snd_tea575x_get_freq(tea);
	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->tuner != 0 || f->type != V4L2_TUNER_RADIO)
		return -EINVAL;

	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 tea575x_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		tea->mute = ctrl->val;
		snd_tea575x_set_freq(tea);
		return 0;
	}

	return -EINVAL;
}

static const struct v4l2_file_operations tea575x_fops = {
	.owner		= THIS_MODULE,
	.unlocked_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_frequency = vidioc_g_frequency,
	.vidioc_s_frequency = vidioc_s_frequency,
};

static struct video_device tea575x_radio = {
	.name           = "tea575x-tuner",
	.fops           = &tea575x_fops,
	.ioctl_ops 	= &tea575x_ioctl_ops,
	.release	= video_device_release_empty,
};

static const struct v4l2_ctrl_ops tea575x_ctrl_ops = {
	.s_ctrl = tea575x_s_ctrl,
};

/*
 * initialize all the tea575x chips
 */
int snd_tea575x_init(struct snd_tea575x *tea)
{
	int retval;

	tea->mute = 1;

	snd_tea575x_write(tea, 0x55AA);
	if (snd_tea575x_read(tea) != 0x55AA)
		return -ENODEV;

	tea->val = TEA575X_BIT_BAND_FM | TEA575X_BIT_SEARCH_10_40;
	tea->freq = 90500 * 16;		/* 90.5Mhz default */
	snd_tea575x_set_freq(tea);

	tea->vd = tea575x_radio;
	video_set_drvdata(&tea->vd, tea);
	mutex_init(&tea->mutex);
	tea->vd.lock = &tea->mutex;

	v4l2_ctrl_handler_init(&tea->ctrl_handler, 1);
	tea->vd.ctrl_handler = &tea->ctrl_handler;
	v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
	retval = tea->ctrl_handler.error;
	if (retval) {
		printk(KERN_ERR "tea575x-tuner: can't initialize controls\n");
		v4l2_ctrl_handler_free(&tea->ctrl_handler);
		return retval;
	}

	if (tea->ext_init) {
		retval = tea->ext_init(tea);
		if (retval) {
			v4l2_ctrl_handler_free(&tea->ctrl_handler);
			return retval;
		}
	}

	v4l2_ctrl_handler_setup(&tea->ctrl_handler);

	retval = video_register_device(&tea->vd, VFL_TYPE_RADIO, radio_nr);
	if (retval) {
		printk(KERN_ERR "tea575x-tuner: can't register video device!\n");
		v4l2_ctrl_handler_free(&tea->ctrl_handler);
		return retval;
	}

	return 0;
}

void snd_tea575x_exit(struct snd_tea575x *tea)
{
	video_unregister_device(&tea->vd);
	v4l2_ctrl_handler_free(&tea->ctrl_handler);
}

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>
1da177e4 LT	24	#include <linux/delay.h>
1da177e4	25	#include <linux/init.h>
5a0e3ad6	26	#include <linux/slab.h>
9b76ede4	27	#include <linux/version.h>
4522e825 OZ	28	#include <media/v4l2-dev.h>
4522e825 OZ	29	#include <media/v4l2-ioctl.h>
1da177e4 LT	30	#include <sound/tea575x-tuner.h>
1da177e4 LT	31
c1017a4c	32	MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
1da177e4 LT	33	MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips");
	34	MODULE_LICENSE("GPL");
	35
9b76ede4 MCC	36	static int radio_nr = -1;
	37	module_param(radio_nr, int, 0);
	38
	39	#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
375d1358 OZ	40	#define FREQ_LO (50UL * 16000)
375d1358 OZ	41	#define FREQ_HI (150UL * 16000)
9b76ede4	42
1da177e4 LT	43	/*
	44	* definitions
	45	*/
	46
	47	#define TEA575X_BIT_SEARCH (1<<24) /* 1 = search action, 0 = tuned */
	48	#define TEA575X_BIT_UPDOWN (1<<23) /* 0 = search down, 1 = search up */
	49	#define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */
	50	#define TEA575X_BIT_BAND_MASK (3<<20)
	51	#define TEA575X_BIT_BAND_FM (0<<20)
	52	#define TEA575X_BIT_BAND_MW (1<<20)
	53	#define TEA575X_BIT_BAND_LW (1<<21)
	54	#define TEA575X_BIT_BAND_SW (1<<22)
	55	#define TEA575X_BIT_PORT_0 (1<<19) /* user bit */
	56	#define TEA575X_BIT_PORT_1 (1<<18) /* user bit */
	57	#define TEA575X_BIT_SEARCH_MASK (3<<16) /* search level */
	58	#define TEA575X_BIT_SEARCH_5_28 (0<<16) /* FM >5uV, AM >28uV */
	59	#define TEA575X_BIT_SEARCH_10_40 (1<<16) /* FM >10uV, AM > 40uV */
	60	#define TEA575X_BIT_SEARCH_30_63 (2<<16) /* FM >30uV, AM > 63uV */
	61	#define TEA575X_BIT_SEARCH_150_1000 (3<<16) /* FM > 150uV, AM > 1000uV */
	62	#define TEA575X_BIT_DUMMY (1<<15) /* buffer */
	63	#define TEA575X_BIT_FREQ_MASK 0x7fff
	64
	65	/*
	66	* lowlevel part
	67	*/
	68
14219d06 OZ	69	static void snd_tea575x_write(struct snd_tea575x *tea, unsigned int val)
	70	{
	71	u16 l;
	72	u8 data;
	73
	74	tea->ops->set_direction(tea, 1);
	75	udelay(16);
	76
	77	for (l = 25; l > 0; l--) {
	78	data = (val >> 24) & TEA575X_DATA;
	79	val <<= 1; /* shift data */
	80	tea->ops->set_pins(tea, data \| TEA575X_WREN);
	81	udelay(2);
	82	tea->ops->set_pins(tea, data \| TEA575X_WREN \| TEA575X_CLK);
	83	udelay(2);
	84	tea->ops->set_pins(tea, data \| TEA575X_WREN);
	85	udelay(2);
	86	}
	87
	88	if (!tea->mute)
	89	tea->ops->set_pins(tea, 0);
	90	}
	91
	92	static unsigned int snd_tea575x_read(struct snd_tea575x *tea)
	93	{
	94	u16 l, rdata;
	95	u32 data = 0;
	96
	97	tea->ops->set_direction(tea, 0);
	98	tea->ops->set_pins(tea, 0);
	99	udelay(16);
	100
	101	for (l = 24; l--;) {
	102	tea->ops->set_pins(tea, TEA575X_CLK);
	103	udelay(2);
	104	if (!l)
	105	tea->tuned = tea->ops->get_pins(tea) & TEA575X_MOST ? 0 : 1;
	106	tea->ops->set_pins(tea, 0);
	107	udelay(2);
	108	data <<= 1; /* shift data */
	109	rdata = tea->ops->get_pins(tea);
	110	if (!l)
	111	tea->stereo = (rdata & TEA575X_MOST) ? 0 : 1;
	112	if (rdata & TEA575X_DATA)
	113	data++;
	114	udelay(2);
	115	}
	116
	117	if (tea->mute)
	118	tea->ops->set_pins(tea, TEA575X_WREN);
	119
	120	return data;
	121	}
	122
375d1358 OZ	123	static void snd_tea575x_get_freq(struct snd_tea575x *tea)
	124	{
	125	unsigned long freq;
	126
14219d06	127	freq = snd_tea575x_read(tea) & TEA575X_BIT_FREQ_MASK;
375d1358 OZ	128	/* freq = 12.5 /
	129	freq *= 125;
	130	freq /= 10;
	131	/* crystal fixup */
	132	if (tea->tea5759)
ea27316e	133	freq += TEA575X_FMIF;
375d1358	134	else
ea27316e	135	freq -= TEA575X_FMIF;
375d1358 OZ	136
	137	tea->freq = freq * 16; /* from kHz */
	138	}
	139
97f02e05	140	static void snd_tea575x_set_freq(struct snd_tea575x *tea)
1da177e4 LT	141	{
	142	unsigned long freq;
	143
375d1358 OZ	144	freq = clamp(tea->freq, FREQ_LO, FREQ_HI);
375d1358 OZ	145	freq /= 16; /* to kHz */
1da177e4 LT	146	/* crystal fixup */
1da177e4 LT	147	if (tea->tea5759)
ea27316e	148	freq -= TEA575X_FMIF;
1da177e4	149	else
ea27316e	150	freq += TEA575X_FMIF;
1da177e4 LT	151	/* freq /= 12.5 */
	152	freq *= 10;
	153	freq /= 125;
	154
	155	tea->val &= ~TEA575X_BIT_FREQ_MASK;
	156	tea->val \|= freq & TEA575X_BIT_FREQ_MASK;
14219d06	157	snd_tea575x_write(tea, tea->val);
1da177e4 LT	158	}
	159
	160	/*
	161	* Linux Video interface
	162	*/
	163
9b76ede4 MCC	164	static int vidioc_querycap(struct file file, void priv,
9b76ede4 MCC	165	struct v4l2_capability *v)
1da177e4	166	{
c170ecf4	167	struct snd_tea575x *tea = video_drvdata(file);
9b76ede4	168
9b76ede4	169	strlcpy(v->driver, "tea575x-tuner", sizeof(v->driver));
10ca7201 OZ	170	strlcpy(v->card, tea->card, sizeof(v->card));
	171	strlcat(v->card, tea->tea5759 ? " TEA5759" : " TEA5757", sizeof(v->card));
	172	strlcpy(v->bus_info, tea->bus_info, sizeof(v->bus_info));
9b76ede4	173	v->version = RADIO_VERSION;
375d1358	174	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
9b76ede4 MCC	175	return 0;
	176	}
	177
	178	static int vidioc_g_tuner(struct file file, void priv,
	179	struct v4l2_tuner *v)
	180	{
375d1358 OZ	181	struct snd_tea575x *tea = video_drvdata(file);
375d1358 OZ	182
9b76ede4 MCC	183	if (v->index > 0)
	184	return -EINVAL;
	185
14219d06	186	snd_tea575x_read(tea);
375d1358	187
9b76ede4 MCC	188	strcpy(v->name, "FM");
9b76ede4 MCC	189	v->type = V4L2_TUNER_RADIO;
375d1358	190	v->capability = V4L2_TUNER_CAP_LOW \| V4L2_TUNER_CAP_STEREO;
9b76ede4 MCC	191	v->rangelow = FREQ_LO;
9b76ede4 MCC	192	v->rangehigh = FREQ_HI;
375d1358 OZ	193	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
	194	v->audmode = tea->stereo ? V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO;
	195	v->signal = tea->tuned ? 0xffff : 0;
	196
9b76ede4 MCC	197	return 0;
	198	}
	199
	200	static int vidioc_s_tuner(struct file file, void priv,
	201	struct v4l2_tuner *v)
	202	{
	203	if (v->index > 0)
	204	return -EINVAL;
	205	return 0;
	206	}
	207
	208	static int vidioc_g_frequency(struct file file, void priv,
	209	struct v4l2_frequency *f)
	210	{
	211	struct snd_tea575x *tea = video_drvdata(file);
	212
375d1358 OZ	213	if (f->tuner != 0)
375d1358 OZ	214	return -EINVAL;
9b76ede4	215	f->type = V4L2_TUNER_RADIO;
375d1358	216	snd_tea575x_get_freq(tea);
9b76ede4 MCC	217	f->frequency = tea->freq;
	218	return 0;
	219	}
	220
	221	static int vidioc_s_frequency(struct file file, void priv,
	222	struct v4l2_frequency *f)
	223	{
	224	struct snd_tea575x *tea = video_drvdata(file);
	225
375d1358 OZ	226	if (f->tuner != 0 \|\| f->type != V4L2_TUNER_RADIO)
	227	return -EINVAL;
	228
9b76ede4 MCC	229	if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI)
	230	return -EINVAL;
	231
	232	tea->freq = f->frequency;
	233
	234	snd_tea575x_set_freq(tea);
	235
	236	return 0;
	237	}
	238
	239	static int vidioc_g_audio(struct file file, void priv,
	240	struct v4l2_audio *a)
	241	{
	242	if (a->index > 1)
	243	return -EINVAL;
	244
	245	strcpy(a->name, "Radio");
	246	a->capability = V4L2_AUDCAP_STEREO;
	247	return 0;
	248	}
	249
	250	static int vidioc_s_audio(struct file file, void priv,
	251	struct v4l2_audio *a)
	252	{
	253	if (a->index != 0)
	254	return -EINVAL;
	255	return 0;
	256	}
	257
4522e825	258	static int tea575x_s_ctrl(struct v4l2_ctrl *ctrl)
9b76ede4	259	{
4522e825	260	struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler);
9b76ede4 MCC	261
	262	switch (ctrl->id) {
	263	case V4L2_CID_AUDIO_MUTE:
4522e825 OZ	264	tea->mute = ctrl->val;
4522e825 OZ	265	snd_tea575x_set_freq(tea);
14219d06	266	return 0;
9b76ede4	267	}
9b76ede4	268
9b76ede4 MCC	269	return -EINVAL;
	270	}
	271
9b76ede4 MCC	272	static const struct v4l2_file_operations tea575x_fops = {
9b76ede4 MCC	273	.owner = THIS_MODULE,
6a529c1a	274	.unlocked_ioctl = video_ioctl2,
9b76ede4 MCC	275	};
	276
	277	static const struct v4l2_ioctl_ops tea575x_ioctl_ops = {
	278	.vidioc_querycap = vidioc_querycap,
	279	.vidioc_g_tuner = vidioc_g_tuner,
	280	.vidioc_s_tuner = vidioc_s_tuner,
	281	.vidioc_g_audio = vidioc_g_audio,
	282	.vidioc_s_audio = vidioc_s_audio,
9b76ede4 MCC	283	.vidioc_g_frequency = vidioc_g_frequency,
9b76ede4 MCC	284	.vidioc_s_frequency = vidioc_s_frequency,
9b76ede4 MCC	285	};
	286
	287	static struct video_device tea575x_radio = {
	288	.name = "tea575x-tuner",
	289	.fops = &tea575x_fops,
	290	.ioctl_ops = &tea575x_ioctl_ops,
4522e825 OZ	291	.release = video_device_release_empty,
	292	};
	293
	294	static const struct v4l2_ctrl_ops tea575x_ctrl_ops = {
	295	.s_ctrl = tea575x_s_ctrl,
9b76ede4 MCC	296	};
9b76ede4 MCC	297
1da177e4 LT	298	/*
	299	* initialize all the tea575x chips
	300	*/
14219d06	301	int snd_tea575x_init(struct snd_tea575x *tea)
1da177e4	302	{
9b76ede4	303	int retval;
1da177e4	304
14219d06 OZ	305	tea->mute = 1;
	306
	307	snd_tea575x_write(tea, 0x55AA);
	308	if (snd_tea575x_read(tea) != 0x55AA)
	309	return -ENODEV;
1da177e4	310
9b76ede4 MCC	311	tea->val = TEA575X_BIT_BAND_FM \| TEA575X_BIT_SEARCH_10_40;
9b76ede4 MCC	312	tea->freq = 90500 * 16; /* 90.5Mhz default */
4522e825	313	snd_tea575x_set_freq(tea);
9b76ede4	314
4522e825 OZ	315	tea->vd = tea575x_radio;
4522e825 OZ	316	video_set_drvdata(&tea->vd, tea);
6a529c1a OZ	317	mutex_init(&tea->mutex);
6a529c1a OZ	318	tea->vd.lock = &tea->mutex;
1da177e4	319
4522e825 OZ	320	v4l2_ctrl_handler_init(&tea->ctrl_handler, 1);
	321	tea->vd.ctrl_handler = &tea->ctrl_handler;
	322	v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
	323	retval = tea->ctrl_handler.error;
	324	if (retval) {
	325	printk(KERN_ERR "tea575x-tuner: can't initialize controls\n");
	326	v4l2_ctrl_handler_free(&tea->ctrl_handler);
	327	return retval;
	328	}
9b76ede4	329
4522e825 OZ	330	if (tea->ext_init) {
	331	retval = tea->ext_init(tea);
	332	if (retval) {
	333	v4l2_ctrl_handler_free(&tea->ctrl_handler);
	334	return retval;
	335	}
	336	}
9b76ede4	337
4522e825	338	v4l2_ctrl_handler_setup(&tea->ctrl_handler);
9b76ede4	339
4522e825	340	retval = video_register_device(&tea->vd, VFL_TYPE_RADIO, radio_nr);
9b76ede4 MCC	341	if (retval) {
9b76ede4 MCC	342	printk(KERN_ERR "tea575x-tuner: can't register video device!\n");
4522e825	343	v4l2_ctrl_handler_free(&tea->ctrl_handler);
14219d06	344	return retval;
9b76ede4	345	}
1da177e4	346
14219d06	347	return 0;
1da177e4 LT	348	}
1da177e4 LT	349
97f02e05	350	void snd_tea575x_exit(struct snd_tea575x *tea)
1da177e4	351	{
4522e825 OZ	352	video_unregister_device(&tea->vd);
4522e825 OZ	353	v4l2_ctrl_handler_free(&tea->ctrl_handler);
1da177e4 LT	354	}
	355
	356	static int __init alsa_tea575x_module_init(void)
	357	{
	358	return 0;
	359	}
4b29631d	360
1da177e4 LT	361	static void __exit alsa_tea575x_module_exit(void)
	362	{
	363	}
4b29631d	364
1da177e4 LT	365	module_init(alsa_tea575x_module_init)
	366	module_exit(alsa_tea575x_module_exit)
	367
	368	EXPORT_SYMBOL(snd_tea575x_init);
	369	EXPORT_SYMBOL(snd_tea575x_exit);