patch-2.4.0-test7 linux/drivers/char/radio-terratec.c

• Lines: 359
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test6/linux/drivers/char/radio-terratec.c
• Orig date: Mon Nov 1 13:56:26 1999

diff -u --recursive --new-file v2.4.0-test6/linux/drivers/char/radio-terratec.c linux/drivers/char/radio-terratec.c
@@ -1,358 +0,0 @@
-/* Terratec ActiveRadio ISA Standalone card driver for Linux radio support
- * (c) 1999 R. Offermanns (rolf@offermanns.de)
- * based on the aimslab radio driver from M. Kirkwood
- * many thanks to Michael Becker and Friedhelm Birth (from TerraTec)
- * 
- *
- * History:
- * 1999-05-21	First preview release
- * 
- *  Notes on the hardware:
- *  There are two "main" chips on the card:
- *  - Philips OM5610 (http://www-us.semiconductors.philips.com/acrobat/datasheets/OM5610_2.pdf)
- *  - Philips SAA6588 (http://www-us.semiconductors.philips.com/acrobat/datasheets/SAA6588_1.pdf)
- *  (you can get the datasheet at the above links)
- *
- *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
- *  Volume Control is done digitally
- *
- *  there is a I2C controlled RDS decoder (SAA6588)  onboard, which i would like to support someday
- *  (as soon i have understand how to get started :)
- *  If you can help me out with that, please contact me!!
- *
- *  
- */
-
-#include <linux/module.h>	/* Modules 			*/
-#include <linux/init.h>		/* Initdata			*/
-#include <linux/ioport.h>	/* check_region, request_region	*/
-#include <linux/delay.h>	/* udelay			*/
-#include <asm/io.h>		/* outb, outb_p			*/
-#include <asm/uaccess.h>	/* copy to/from user		*/
-#include <linux/videodev.h>	/* kernel radio structs		*/
-#include <linux/config.h>	/* CONFIG_RADIO_TERRATEC_PORT 	*/
-#include <linux/spinlock.h>
-
-#ifndef CONFIG_RADIO_TERRATEC_PORT
-#define CONFIG_RADIO_TERRATEC_PORT 0x590
-#endif
-
-/**************** this ones are for the terratec *******************/
-#define BASEPORT 	0x590
-#define VOLPORT 	0x591
-#define WRT_DIS 	0x00
-#define CLK_OFF		0x00
-#define IIC_DATA	0x01
-#define IIC_CLK		0x02
-#define DATA		0x04
-#define CLK_ON 		0x08
-#define WRT_EN		0x10
-/*******************************************************************/
-
-static int io = CONFIG_RADIO_TERRATEC_PORT; 
-static int users = 0;
-static spinlock_t lock;
-
-struct tt_device
-{
-	int port;
-	int curvol;
-	unsigned long curfreq;
-	int muted;
-};
-
-
-/* local things */
-
-static void cardWriteVol(int volume)
-{
-	int i;
-	volume = volume+(volume * 32); // change both channels
-	spin_lock(&lock);
-	for (i=0;i<8;i++)
-	{
-		if (volume & (0x80>>i))
-			outb(0x80, VOLPORT);
-		else outb(0x00, VOLPORT);
-	}
-	spin_unlock(&lock);
-}
-
-
-
-static void tt_mute(struct tt_device *dev)
-{
-	dev->muted = 1;
-	cardWriteVol(0);
-}
-
-static int tt_setvol(struct tt_device *dev, int vol)
-{
-	
-//	printk(KERN_ERR "setvol called, vol = %d\n", vol);
-
-	if(vol == dev->curvol) {	/* requested volume = current */
-		if (dev->muted) {	/* user is unmuting the card  */
-			dev->muted = 0;
-			cardWriteVol(vol);	/* enable card */
-		}	
-	
-		return 0;
-	}
-
-	if(vol == 0) {			/* volume = 0 means mute the card */
-		cardWriteVol(0);	/* "turn off card" by setting vol to 0 */
-		dev->curvol = vol;	/* track the volume state!	*/
-		return 0;
-	}
-
-	dev->muted = 0;
-	
-	cardWriteVol(vol);
-	 
-	dev->curvol = vol;
-
-	return 0;
-
-}
-
-
-/* this is the worst part in this driver */
-/* many more or less strange things are going on here, but hey, it works :) */
-
-static int tt_setfreq(struct tt_device *dev, unsigned long freq1)
-{	
-	int freq;
-	int i;
-	int p;
-	int  temp;
-	long rest;
-     
-	unsigned char buffer[25];		/* we have to bit shift 25 registers */
-	freq = freq1/160;			/* convert the freq. to a nice to handel value */
-	for(i=24;i>-1;i--)
-		buffer[i]=0;
-
-	rest = freq*10+10700;		/* i once had understood what is going on here */
-					/* maybe some wise guy (friedhelm?) can comment this stuff */
-	i=13;
-	p=10;
-	temp=102400;
-	while (rest!=0)
-	{
-		if (rest%temp  == rest)
-			buffer[i] = 0;
-		else 
-		{
-			buffer[i] = 1; 
-			rest = rest-temp;
-		}
-		i--;
-		p--;
-		temp = temp/2;
-       }
-
-	spin_lock(&lock);
-	
-	for (i=24;i>-1;i--)			/* bit shift the values to the radiocard */
-	{
-		if (buffer[i]==1) 
-		{
-			outb(WRT_EN|DATA, BASEPORT);
-			outb(WRT_EN|DATA|CLK_ON  , BASEPORT);
-			outb(WRT_EN|DATA, BASEPORT);
-		}
-		else
-		{
-			outb(WRT_EN|0x00, BASEPORT);
-			outb(WRT_EN|0x00|CLK_ON  , BASEPORT);
-		}
-	}
-	outb(0x00, BASEPORT);     
-	
-	spin_unlock(&lock);
-  
-  	return 0;
-}
-
-int tt_getsigstr(struct tt_device *dev)		/* TODO */
-{
-	if (inb(io) & 2)	/* bit set = no signal present	*/
-		return 0;
-	return 1;		/* signal present		*/
-}
-
-
-/* implement the video4linux api */
-
-static int tt_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
-	struct tt_device *tt=dev->priv;
-	
-	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, "ActiveRadio");
-			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*tt_getsigstr(tt);
-			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, &tt->curfreq, sizeof(tt->curfreq)))
-				return -EFAULT;
-			return 0;
-		case VIDIOCSFREQ:
-			if(copy_from_user(&tt->curfreq, arg,sizeof(tt->curfreq)))
-				return -EFAULT;
-			tt_setfreq(tt, tt->curfreq);
-			return 0;
-		case VIDIOCGAUDIO:
-		{	
-			struct video_audio v;
-			memset(&v,0, sizeof(v));
-			v.flags|=VIDEO_AUDIO_MUTABLE|VIDEO_AUDIO_VOLUME;
-			v.volume=tt->curvol * 6554;
-			v.step=6554;
-			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(v.audio) 
-				return -EINVAL;
-
-			if(v.flags&VIDEO_AUDIO_MUTE) 
-				tt_mute(tt);
-			else
-				tt_setvol(tt,v.volume/6554);	
-
-			return 0;
-		}
-		default:
-			return -ENOIOCTLCMD;
-	}
-}
-
-static int tt_open(struct video_device *dev, int flags)
-{
-	if(users)
-		return -EBUSY;
-	users++;
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static void tt_close(struct video_device *dev)
-{
-	users--;
-	MOD_DEC_USE_COUNT;
-}
-
-static struct tt_device terratec_unit;
-
-static struct video_device terratec_radio=
-{
-	"TerraTec ActiveRadio",
-	VID_TYPE_TUNER,
-	VID_HARDWARE_TERRATEC,
-	tt_open,
-	tt_close,
-	NULL,	/* Can't read  (no capture ability) */
-	NULL,	/* Can't write */
-	NULL,	/* No poll */
-	tt_ioctl,
-	NULL,
-	NULL
-};
-
-static int __init terratec_init(void)
-{
-	if(io==-1)
-	{
-		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
-		return -EINVAL;
-	}
-	if (check_region(io, 2)) 
-	{
-		printk(KERN_ERR "TerraTec: port 0x%x already in use\n", io);
-		return -EBUSY;
-	}
-
-	terratec_radio.priv=&terratec_unit;
-	
-	spin_lock_init(&lock);
-	
-	if(video_register_device(&terratec_radio, VFL_TYPE_RADIO)==-1)
-		return -EINVAL;
-		
-	request_region(io, 2, "terratec");
-	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver.\n");
-
- 	/* mute card - prevents noisy bootups */
-
-	/* this ensures that the volume is all the way down  */
-	cardWriteVol(0);
-	terratec_unit.curvol = 0;
-
-	return 0;
-}
-
-MODULE_AUTHOR("R.OFFERMANNS & others");
-MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
-MODULE_PARM(io, "i");
-MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
-
-EXPORT_NO_SYMBOLS;
-
-static void __exit terratec_cleanup_module(void)
-{
-	video_unregister_device(&terratec_radio);
-	release_region(io,2);
-	printk(KERN_INFO "TERRATEC ActivRadio Standalone card driver unloaded.\n");	
-}
-
-module_init(terratec_init);
-module_exit(terratec_cleanup_module);
-