[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/slab.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		 (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

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_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->tea5759 ? "TEA5759" : "TEA5757", sizeof(v->card));
	sprintf(v->bus_info, "PCI");
	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 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:
		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->mute != ctrl->value) {
			tea->mute = ctrl->value;
			snd_tea575x_set_freq(tea);
		}
		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
 */
int snd_tea575x_init(struct snd_tea575x *tea)
{
	int retval;
	struct video_device *tea575x_radio_inst;

	tea->mute = 1;

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

	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 -ENOMEM;
	}

	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 retval;
	}

	snd_tea575x_set_freq(tea);
	tea->vd = tea575x_radio_inst;

	return 0;
}

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>
5a0e3ad6	27	#include <linux/slab.h>
9b76ede4	28	#include <linux/version.h>
1da177e4 LT	29	#include <sound/core.h>
	30	#include <sound/tea575x-tuner.h>
	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
9b76ede4 MCC	65	static struct v4l2_queryctrl radio_qctrl[] = {
	66	{
	67	.id = V4L2_CID_AUDIO_MUTE,
	68	.name = "Mute",
	69	.minimum = 0,
	70	.maximum = 1,
	71	.default_value = 1,
	72	.type = V4L2_CTRL_TYPE_BOOLEAN,
	73	}
	74	};
	75
1da177e4 LT	76	/*
	77	* lowlevel part
	78	*/
	79
14219d06 OZ	80	static void snd_tea575x_write(struct snd_tea575x *tea, unsigned int val)
	81	{
	82	u16 l;
	83	u8 data;
	84
	85	tea->ops->set_direction(tea, 1);
	86	udelay(16);
	87
	88	for (l = 25; l > 0; l--) {
	89	data = (val >> 24) & TEA575X_DATA;
	90	val <<= 1; /* shift data */
	91	tea->ops->set_pins(tea, data \| TEA575X_WREN);
	92	udelay(2);
	93	tea->ops->set_pins(tea, data \| TEA575X_WREN \| TEA575X_CLK);
	94	udelay(2);
	95	tea->ops->set_pins(tea, data \| TEA575X_WREN);
	96	udelay(2);
	97	}
	98
	99	if (!tea->mute)
	100	tea->ops->set_pins(tea, 0);
	101	}
	102
	103	static unsigned int snd_tea575x_read(struct snd_tea575x *tea)
	104	{
	105	u16 l, rdata;
	106	u32 data = 0;
	107
	108	tea->ops->set_direction(tea, 0);
	109	tea->ops->set_pins(tea, 0);
	110	udelay(16);
	111
	112	for (l = 24; l--;) {
	113	tea->ops->set_pins(tea, TEA575X_CLK);
	114	udelay(2);
	115	if (!l)
	116	tea->tuned = tea->ops->get_pins(tea) & TEA575X_MOST ? 0 : 1;
	117	tea->ops->set_pins(tea, 0);
	118	udelay(2);
	119	data <<= 1; /* shift data */
	120	rdata = tea->ops->get_pins(tea);
	121	if (!l)
	122	tea->stereo = (rdata & TEA575X_MOST) ? 0 : 1;
	123	if (rdata & TEA575X_DATA)
	124	data++;
	125	udelay(2);
	126	}
	127
	128	if (tea->mute)
	129	tea->ops->set_pins(tea, TEA575X_WREN);
	130
	131	return data;
	132	}
	133
375d1358 OZ	134	static void snd_tea575x_get_freq(struct snd_tea575x *tea)
	135	{
	136	unsigned long freq;
	137
14219d06	138	freq = snd_tea575x_read(tea) & TEA575X_BIT_FREQ_MASK;
375d1358 OZ	139	/* freq = 12.5 /
	140	freq *= 125;
	141	freq /= 10;
	142	/* crystal fixup */
	143	if (tea->tea5759)
ea27316e	144	freq += TEA575X_FMIF;
375d1358	145	else
ea27316e	146	freq -= TEA575X_FMIF;
375d1358 OZ	147
	148	tea->freq = freq * 16; /* from kHz */
	149	}
	150
97f02e05	151	static void snd_tea575x_set_freq(struct snd_tea575x *tea)
1da177e4 LT	152	{
	153	unsigned long freq;
	154
375d1358 OZ	155	freq = clamp(tea->freq, FREQ_LO, FREQ_HI);
375d1358 OZ	156	freq /= 16; /* to kHz */
1da177e4 LT	157	/* crystal fixup */
1da177e4 LT	158	if (tea->tea5759)
ea27316e	159	freq -= TEA575X_FMIF;
1da177e4	160	else
ea27316e	161	freq += TEA575X_FMIF;
1da177e4 LT	162	/* freq /= 12.5 */
	163	freq *= 10;
	164	freq /= 125;
	165
	166	tea->val &= ~TEA575X_BIT_FREQ_MASK;
	167	tea->val \|= freq & TEA575X_BIT_FREQ_MASK;
14219d06	168	snd_tea575x_write(tea, tea->val);
1da177e4 LT	169	}
	170
	171	/*
	172	* Linux Video interface
	173	*/
	174
9b76ede4 MCC	175	static int vidioc_querycap(struct file file, void priv,
9b76ede4 MCC	176	struct v4l2_capability *v)
1da177e4	177	{
c170ecf4	178	struct snd_tea575x *tea = video_drvdata(file);
9b76ede4	179
9b76ede4	180	strlcpy(v->driver, "tea575x-tuner", sizeof(v->driver));
375d1358	181	strlcpy(v->card, tea->tea5759 ? "TEA5759" : "TEA5757", sizeof(v->card));
9b76ede4 MCC	182	sprintf(v->bus_info, "PCI");
9b76ede4 MCC	183	v->version = RADIO_VERSION;
375d1358	184	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
9b76ede4 MCC	185	return 0;
	186	}
	187
	188	static int vidioc_g_tuner(struct file file, void priv,
	189	struct v4l2_tuner *v)
	190	{
375d1358 OZ	191	struct snd_tea575x *tea = video_drvdata(file);
375d1358 OZ	192
9b76ede4 MCC	193	if (v->index > 0)
	194	return -EINVAL;
	195
14219d06	196	snd_tea575x_read(tea);
375d1358	197
9b76ede4 MCC	198	strcpy(v->name, "FM");
9b76ede4 MCC	199	v->type = V4L2_TUNER_RADIO;
375d1358	200	v->capability = V4L2_TUNER_CAP_LOW \| V4L2_TUNER_CAP_STEREO;
9b76ede4 MCC	201	v->rangelow = FREQ_LO;
9b76ede4 MCC	202	v->rangehigh = FREQ_HI;
375d1358 OZ	203	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
	204	v->audmode = tea->stereo ? V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO;
	205	v->signal = tea->tuned ? 0xffff : 0;
	206
9b76ede4 MCC	207	return 0;
	208	}
	209
	210	static int vidioc_s_tuner(struct file file, void priv,
	211	struct v4l2_tuner *v)
	212	{
	213	if (v->index > 0)
	214	return -EINVAL;
	215	return 0;
	216	}
	217
	218	static int vidioc_g_frequency(struct file file, void priv,
	219	struct v4l2_frequency *f)
	220	{
	221	struct snd_tea575x *tea = video_drvdata(file);
	222
375d1358 OZ	223	if (f->tuner != 0)
375d1358 OZ	224	return -EINVAL;
9b76ede4	225	f->type = V4L2_TUNER_RADIO;
375d1358	226	snd_tea575x_get_freq(tea);
9b76ede4 MCC	227	f->frequency = tea->freq;
	228	return 0;
	229	}
	230
	231	static int vidioc_s_frequency(struct file file, void priv,
	232	struct v4l2_frequency *f)
	233	{
	234	struct snd_tea575x *tea = video_drvdata(file);
	235
375d1358 OZ	236	if (f->tuner != 0 \|\| f->type != V4L2_TUNER_RADIO)
	237	return -EINVAL;
	238
9b76ede4 MCC	239	if (f->frequency < FREQ_LO \|\| f->frequency > FREQ_HI)
	240	return -EINVAL;
	241
	242	tea->freq = f->frequency;
	243
	244	snd_tea575x_set_freq(tea);
	245
	246	return 0;
	247	}
	248
	249	static int vidioc_g_audio(struct file file, void priv,
	250	struct v4l2_audio *a)
	251	{
	252	if (a->index > 1)
	253	return -EINVAL;
	254
	255	strcpy(a->name, "Radio");
	256	a->capability = V4L2_AUDCAP_STEREO;
	257	return 0;
	258	}
	259
	260	static int vidioc_s_audio(struct file file, void priv,
	261	struct v4l2_audio *a)
	262	{
	263	if (a->index != 0)
	264	return -EINVAL;
	265	return 0;
	266	}
	267
	268	static int vidioc_queryctrl(struct file file, void priv,
	269	struct v4l2_queryctrl *qc)
	270	{
	271	int i;
	272
	273	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	274	if (qc->id && qc->id == radio_qctrl[i].id) {
	275	memcpy(qc, &(radio_qctrl[i]),
	276	sizeof(*qc));
1da177e4 LT	277	return 0;
1da177e4 LT	278	}
9b76ede4 MCC	279	}
	280	return -EINVAL;
	281	}
	282
	283	static int vidioc_g_ctrl(struct file file, void priv,
	284	struct v4l2_control *ctrl)
	285	{
	286	struct snd_tea575x *tea = video_drvdata(file);
	287
	288	switch (ctrl->id) {
	289	case V4L2_CID_AUDIO_MUTE:
14219d06 OZ	290	ctrl->value = tea->mute;
14219d06 OZ	291	return 0;
9b76ede4 MCC	292	}
	293	return -EINVAL;
	294	}
	295
	296	static int vidioc_s_ctrl(struct file file, void priv,
	297	struct v4l2_control *ctrl)
	298	{
	299	struct snd_tea575x *tea = video_drvdata(file);
	300
	301	switch (ctrl->id) {
	302	case V4L2_CID_AUDIO_MUTE:
14219d06	303	if (tea->mute != ctrl->value) {
1233faa8	304	tea->mute = ctrl->value;
14219d06	305	snd_tea575x_set_freq(tea);
1da177e4	306	}
14219d06	307	return 0;
1da177e4	308	}
9b76ede4 MCC	309	return -EINVAL;
	310	}
	311
	312	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	313	{
	314	*i = 0;
	315	return 0;
1da177e4 LT	316	}
1da177e4 LT	317
9b76ede4	318	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
1da177e4	319	{
9b76ede4 MCC	320	if (i != 0)
	321	return -EINVAL;
	322	return 0;
1da177e4 LT	323	}
1da177e4 LT	324
bec43661	325	static int snd_tea575x_exclusive_open(struct file *file)
2f3d0025	326	{
c170ecf4	327	struct snd_tea575x *tea = video_drvdata(file);
2f3d0025 HV	328
	329	return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0;
	330	}
	331
bec43661	332	static int snd_tea575x_exclusive_release(struct file *file)
2f3d0025	333	{
c170ecf4	334	struct snd_tea575x *tea = video_drvdata(file);
2f3d0025 HV	335
	336	clear_bit(0, &tea->in_use);
	337	return 0;
	338	}
	339
9b76ede4 MCC	340	static const struct v4l2_file_operations tea575x_fops = {
	341	.owner = THIS_MODULE,
	342	.open = snd_tea575x_exclusive_open,
	343	.release = snd_tea575x_exclusive_release,
	344	.ioctl = video_ioctl2,
	345	};
	346
	347	static const struct v4l2_ioctl_ops tea575x_ioctl_ops = {
	348	.vidioc_querycap = vidioc_querycap,
	349	.vidioc_g_tuner = vidioc_g_tuner,
	350	.vidioc_s_tuner = vidioc_s_tuner,
	351	.vidioc_g_audio = vidioc_g_audio,
	352	.vidioc_s_audio = vidioc_s_audio,
	353	.vidioc_g_input = vidioc_g_input,
	354	.vidioc_s_input = vidioc_s_input,
	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,
	360	};
	361
	362	static struct video_device tea575x_radio = {
	363	.name = "tea575x-tuner",
	364	.fops = &tea575x_fops,
	365	.ioctl_ops = &tea575x_ioctl_ops,
	366	.release = video_device_release,
	367	};
	368
1da177e4 LT	369	/*
	370	* initialize all the tea575x chips
	371	*/
14219d06	372	int snd_tea575x_init(struct snd_tea575x *tea)
1da177e4	373	{
9b76ede4	374	int retval;
9b76ede4	375	struct video_device *tea575x_radio_inst;
1da177e4	376
14219d06 OZ	377	tea->mute = 1;
	378
	379	snd_tea575x_write(tea, 0x55AA);
	380	if (snd_tea575x_read(tea) != 0x55AA)
	381	return -ENODEV;
1da177e4	382
2f3d0025	383	tea->in_use = 0;
9b76ede4 MCC	384	tea->val = TEA575X_BIT_BAND_FM \| TEA575X_BIT_SEARCH_10_40;
	385	tea->freq = 90500 * 16; /* 90.5Mhz default */
	386
	387	tea575x_radio_inst = video_device_alloc();
	388	if (tea575x_radio_inst == NULL) {
	389	printk(KERN_ERR "tea575x-tuner: not enough memory\n");
14219d06	390	return -ENOMEM;
1da177e4	391	}
1da177e4	392
9b76ede4 MCC	393	memcpy(tea575x_radio_inst, &tea575x_radio, sizeof(tea575x_radio));
	394
	395	strcpy(tea575x_radio.name, tea->tea5759 ?
	396	"TEA5759 radio" : "TEA5757 radio");
	397
	398	video_set_drvdata(tea575x_radio_inst, tea);
	399
	400	retval = video_register_device(tea575x_radio_inst,
	401	VFL_TYPE_RADIO, radio_nr);
	402	if (retval) {
	403	printk(KERN_ERR "tea575x-tuner: can't register video device!\n");
	404	kfree(tea575x_radio_inst);
14219d06	405	return retval;
9b76ede4	406	}
1da177e4 LT	407
1da177e4 LT	408	snd_tea575x_set_freq(tea);
9b76ede4	409	tea->vd = tea575x_radio_inst;
14219d06 OZ	410
14219d06 OZ	411	return 0;
1da177e4 LT	412	}
1da177e4 LT	413
97f02e05	414	void snd_tea575x_exit(struct snd_tea575x *tea)
1da177e4	415	{
9b76ede4 MCC	416	if (tea->vd) {
	417	video_unregister_device(tea->vd);
	418	tea->vd = NULL;
1da177e4 LT	419	}
	420	}
	421
	422	static int __init alsa_tea575x_module_init(void)
	423	{
	424	return 0;
	425	}
4b29631d	426
1da177e4 LT	427	static void __exit alsa_tea575x_module_exit(void)
	428	{
	429	}
4b29631d	430
1da177e4 LT	431	module_init(alsa_tea575x_module_init)
	432	module_exit(alsa_tea575x_module_exit)
	433
	434	EXPORT_SYMBOL(snd_tea575x_init);
	435	EXPORT_SYMBOL(snd_tea575x_exit);