sound/i2c/other/tea575x-tuner.c - kernel/msm-4.9 - Gitiles

 /*
  *   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 int snd_tea575x_ioctl(struct inode *inode, 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 inode *inode, 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 inode *inode, 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);
	/*
	* 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 int snd_tea575x_ioctl(struct inode inode, 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 inode inode, 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 inode inode, 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);