[net-next-2.6.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 <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");

/*
 * 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_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 long snd_tea575x_ioctl(struct file *file,
			     unsigned int cmd, unsigned long data)
{
	struct snd_tea575x *tea = video_drvdata(file);
	void __user *arg = (void __user *)data;

	switch(cmd) {
		case VIDIOCGCAP:
		{
			struct video_capability v;
			v.type = VID_TYPE_TUNER;
			v.channels = 1;
			v.audios = 1;
			/* No we don't do pictures */
			v.maxwidth = 0;
			v.maxheight = 0;
			v.minwidth = 0;
			v.minheight = 0;
			strcpy(v.name, tea->tea5759 ? "TEA5759" : "TEA5757");
			if (copy_to_user(arg,&v,sizeof(v)))
				return -EFAULT;
			return 0;
		}
		case VIDIOCGTUNER:
		{
			struct video_tuner v;
			if (copy_from_user(&v, arg,sizeof(v))!=0)
				return -EFAULT;
			if (v.tuner)	/* Only 1 tuner */
				return -EINVAL;
			v.rangelow = (87*16000);
			v.rangehigh = (108*16000);
			v.flags = VIDEO_TUNER_LOW;
			v.mode = VIDEO_MODE_AUTO;
			strcpy(v.name, "FM");
			v.signal = 0xFFFF;
			if (copy_to_user(arg, &v, sizeof(v)))
				return -EFAULT;
			return 0;
		}
		case VIDIOCSTUNER:
		{
			struct video_tuner v;
			if(copy_from_user(&v, arg, sizeof(v)))
				return -EFAULT;
			if(v.tuner!=0)
				return -EINVAL;
			/* Only 1 tuner so no setting needed ! */
			return 0;
		}
		case VIDIOCGFREQ:
			if(copy_to_user(arg, &tea->freq, sizeof(tea->freq)))
				return -EFAULT;
			return 0;
		case VIDIOCSFREQ:
			if(copy_from_user(&tea->freq, arg, sizeof(tea->freq)))
				return -EFAULT;
			snd_tea575x_set_freq(tea);
			return 0;
		case VIDIOCGAUDIO:
		{
			struct video_audio v;
			memset(&v, 0, sizeof(v));
			strcpy(v.name, "Radio");
			if(copy_to_user(arg,&v, sizeof(v)))
				return -EFAULT;
			return 0;
		}
		case VIDIOCSAUDIO:
		{
			struct video_audio v;
			if(copy_from_user(&v, arg, sizeof(v)))
				return -EFAULT;
			if (tea->ops->mute)
				tea->ops->mute(tea,
					       (v.flags &
						VIDEO_AUDIO_MUTE) ? 1 : 0);
			if(v.audio)
				return -EINVAL;
			return 0;
		}
		default:
			return -ENOIOCTLCMD;
	}
}

static void snd_tea575x_release(struct video_device *vfd)
{
}

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;
}

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

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

	memset(&tea->vd, 0, sizeof(tea->vd));
	strcpy(tea->vd.name, tea->tea5759 ? "TEA5759 radio" : "TEA5757 radio");
	tea->vd.release = snd_tea575x_release;
	video_set_drvdata(&tea->vd, tea);
	tea->vd.fops = &tea->fops;
	tea->in_use = 0;
	tea->fops.owner = tea->card->module;
	tea->fops.open = snd_tea575x_exclusive_open;
	tea->fops.release = snd_tea575x_exclusive_release;
	tea->fops.ioctl = snd_tea575x_ioctl;
	if (video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->dev_nr - 1) < 0) {
		snd_printk(KERN_ERR "unable to register tea575x tuner\n");
		return;
	}
	tea->vd_registered = 1;

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

	snd_tea575x_set_freq(tea);

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

void snd_tea575x_exit(struct snd_tea575x *tea)
{
	if (tea->vd_registered) {
		video_unregister_device(&tea->vd);
		tea->vd_registered = 0;
	}
}

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>
	27	#include <sound/core.h>
	28	#include <sound/tea575x-tuner.h>
	29
c1017a4c	30	MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
1da177e4 LT	31	MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips");
	32	MODULE_LICENSE("GPL");
	33
	34	/*
	35	* definitions
	36	*/
	37
	38	#define TEA575X_BIT_SEARCH (1<<24) /* 1 = search action, 0 = tuned */
	39	#define TEA575X_BIT_UPDOWN (1<<23) /* 0 = search down, 1 = search up */
	40	#define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */
	41	#define TEA575X_BIT_BAND_MASK (3<<20)
	42	#define TEA575X_BIT_BAND_FM (0<<20)
	43	#define TEA575X_BIT_BAND_MW (1<<20)
	44	#define TEA575X_BIT_BAND_LW (1<<21)
	45	#define TEA575X_BIT_BAND_SW (1<<22)
	46	#define TEA575X_BIT_PORT_0 (1<<19) /* user bit */
	47	#define TEA575X_BIT_PORT_1 (1<<18) /* user bit */
	48	#define TEA575X_BIT_SEARCH_MASK (3<<16) /* search level */
	49	#define TEA575X_BIT_SEARCH_5_28 (0<<16) /* FM >5uV, AM >28uV */
	50	#define TEA575X_BIT_SEARCH_10_40 (1<<16) /* FM >10uV, AM > 40uV */
	51	#define TEA575X_BIT_SEARCH_30_63 (2<<16) /* FM >30uV, AM > 63uV */
	52	#define TEA575X_BIT_SEARCH_150_1000 (3<<16) /* FM > 150uV, AM > 1000uV */
	53	#define TEA575X_BIT_DUMMY (1<<15) /* buffer */
	54	#define TEA575X_BIT_FREQ_MASK 0x7fff
	55
	56	/*
	57	* lowlevel part
	58	*/
	59
97f02e05	60	static void snd_tea575x_set_freq(struct snd_tea575x *tea)
1da177e4 LT	61	{
	62	unsigned long freq;
	63
	64	freq = tea->freq / 16; /* to kHz */
	65	if (freq > 108000)
	66	freq = 108000;
	67	if (freq < 87000)
	68	freq = 87000;
	69	/* crystal fixup */
	70	if (tea->tea5759)
	71	freq -= tea->freq_fixup;
	72	else
	73	freq += tea->freq_fixup;
	74	/* freq /= 12.5 */
	75	freq *= 10;
	76	freq /= 125;
	77
	78	tea->val &= ~TEA575X_BIT_FREQ_MASK;
	79	tea->val \|= freq & TEA575X_BIT_FREQ_MASK;
	80	tea->ops->write(tea, tea->val);
	81	}
	82
	83	/*
	84	* Linux Video interface
	85	*/
	86
069b7479	87	static long snd_tea575x_ioctl(struct file *file,
1da177e4 LT	88	unsigned int cmd, unsigned long data)
1da177e4 LT	89	{
c170ecf4	90	struct snd_tea575x *tea = video_drvdata(file);
1da177e4	91	void __user arg = (void __user )data;
4b29631d	92
1da177e4 LT	93	switch(cmd) {
	94	case VIDIOCGCAP:
	95	{
	96	struct video_capability v;
	97	v.type = VID_TYPE_TUNER;
	98	v.channels = 1;
	99	v.audios = 1;
	100	/* No we don't do pictures */
	101	v.maxwidth = 0;
	102	v.maxheight = 0;
	103	v.minwidth = 0;
	104	v.minheight = 0;
	105	strcpy(v.name, tea->tea5759 ? "TEA5759" : "TEA5757");
	106	if (copy_to_user(arg,&v,sizeof(v)))
	107	return -EFAULT;
	108	return 0;
	109	}
	110	case VIDIOCGTUNER:
	111	{
	112	struct video_tuner v;
4b29631d	113	if (copy_from_user(&v, arg,sizeof(v))!=0)
1da177e4	114	return -EFAULT;
4b29631d	115	if (v.tuner) /* Only 1 tuner */
1da177e4 LT	116	return -EINVAL;
	117	v.rangelow = (87*16000);
	118	v.rangehigh = (108*16000);
	119	v.flags = VIDEO_TUNER_LOW;
	120	v.mode = VIDEO_MODE_AUTO;
	121	strcpy(v.name, "FM");
	122	v.signal = 0xFFFF;
	123	if (copy_to_user(arg, &v, sizeof(v)))
	124	return -EFAULT;
	125	return 0;
	126	}
	127	case VIDIOCSTUNER:
	128	{
	129	struct video_tuner v;
	130	if(copy_from_user(&v, arg, sizeof(v)))
	131	return -EFAULT;
	132	if(v.tuner!=0)
	133	return -EINVAL;
	134	/* Only 1 tuner so no setting needed ! */
	135	return 0;
	136	}
	137	case VIDIOCGFREQ:
	138	if(copy_to_user(arg, &tea->freq, sizeof(tea->freq)))
	139	return -EFAULT;
	140	return 0;
	141	case VIDIOCSFREQ:
	142	if(copy_from_user(&tea->freq, arg, sizeof(tea->freq)))
	143	return -EFAULT;
	144	snd_tea575x_set_freq(tea);
	145	return 0;
	146	case VIDIOCGAUDIO:
4b29631d	147	{
1da177e4 LT	148	struct video_audio v;
	149	memset(&v, 0, sizeof(v));
	150	strcpy(v.name, "Radio");
	151	if(copy_to_user(arg,&v, sizeof(v)))
	152	return -EFAULT;
4b29631d	153	return 0;
1da177e4 LT	154	}
	155	case VIDIOCSAUDIO:
	156	{
	157	struct video_audio v;
4b29631d IL	158	if(copy_from_user(&v, arg, sizeof(v)))
4b29631d IL	159	return -EFAULT;
69252128 AS	160	if (tea->ops->mute)
	161	tea->ops->mute(tea,
	162	(v.flags &
	163	VIDEO_AUDIO_MUTE) ? 1 : 0);
4b29631d	164	if(v.audio)
1da177e4 LT	165	return -EINVAL;
	166	return 0;
	167	}
	168	default:
	169	return -ENOIOCTLCMD;
	170	}
	171	}
	172
	173	static void snd_tea575x_release(struct video_device *vfd)
	174	{
	175	}
	176
bec43661	177	static int snd_tea575x_exclusive_open(struct file *file)
2f3d0025	178	{
c170ecf4	179	struct snd_tea575x *tea = video_drvdata(file);
2f3d0025 HV	180
	181	return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0;
	182	}
	183
bec43661	184	static int snd_tea575x_exclusive_release(struct file *file)
2f3d0025	185	{
c170ecf4	186	struct snd_tea575x *tea = video_drvdata(file);
2f3d0025 HV	187
	188	clear_bit(0, &tea->in_use);
	189	return 0;
	190	}
	191
1da177e4 LT	192	/*
	193	* initialize all the tea575x chips
	194	*/
97f02e05	195	void snd_tea575x_init(struct snd_tea575x *tea)
1da177e4 LT	196	{
	197	unsigned int val;
	198
	199	val = tea->ops->read(tea);
	200	if (val == 0x1ffffff \|\| val == 0) {
	201	snd_printk(KERN_ERR "Cannot find TEA575x chip\n");
	202	return;
	203	}
	204
	205	memset(&tea->vd, 0, sizeof(tea->vd));
1da177e4	206	strcpy(tea->vd.name, tea->tea5759 ? "TEA5759 radio" : "TEA5757 radio");
1da177e4 LT	207	tea->vd.release = snd_tea575x_release;
	208	video_set_drvdata(&tea->vd, tea);
	209	tea->vd.fops = &tea->fops;
2f3d0025	210	tea->in_use = 0;
1da177e4	211	tea->fops.owner = tea->card->module;
2f3d0025 HV	212	tea->fops.open = snd_tea575x_exclusive_open;
2f3d0025 HV	213	tea->fops.release = snd_tea575x_exclusive_release;
1da177e4 LT	214	tea->fops.ioctl = snd_tea575x_ioctl;
	215	if (video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->dev_nr - 1) < 0) {
	216	snd_printk(KERN_ERR "unable to register tea575x tuner\n");
	217	return;
	218	}
	219	tea->vd_registered = 1;
	220
	221	tea->val = TEA575X_BIT_BAND_FM \| TEA575X_BIT_SEARCH_10_40;
	222	tea->freq = 90500 * 16; /* 90.5Mhz default */
	223
	224	snd_tea575x_set_freq(tea);
69252128 AS	225
	226	/* mute on init */
	227	if (tea->ops->mute)
	228	tea->ops->mute(tea, 1);
1da177e4 LT	229	}
1da177e4 LT	230
97f02e05	231	void snd_tea575x_exit(struct snd_tea575x *tea)
1da177e4 LT	232	{
	233	if (tea->vd_registered) {
	234	video_unregister_device(&tea->vd);
	235	tea->vd_registered = 0;
	236	}
	237	}
	238
	239	static int __init alsa_tea575x_module_init(void)
	240	{
	241	return 0;
	242	}
4b29631d	243
1da177e4 LT	244	static void __exit alsa_tea575x_module_exit(void)
	245	{
	246	}
4b29631d	247
1da177e4 LT	248	module_init(alsa_tea575x_module_init)
	249	module_exit(alsa_tea575x_module_exit)
	250
	251	EXPORT_SYMBOL(snd_tea575x_init);
	252	EXPORT_SYMBOL(snd_tea575x_exit);