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

• Lines: 320
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test6/linux/drivers/char/radio-gemtek.c
• Orig date: Tue Mar 14 19:10:39 2000

diff -u --recursive --new-file v2.4.0-test6/linux/drivers/char/radio-gemtek.c linux/drivers/char/radio-gemtek.c
@@ -1,319 +0,0 @@
-/* GemTek radio card driver for Linux (C) 1998 Jonas Munsin <jmunsin@iki.fi>
- *
- * GemTek hasn't released any specs on the card, so the protocol had to
- * be reverse engineered with dosemu.
- *
- * Besides the protocol changes, this is mostly a copy of:
- *
- *    RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff
- * 
- *    Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
- *    Coverted to new API by Alan Cox <Alan.Cox@linux.org>
- *    Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
- *
- * TODO: Allow for more than one of these foolish entities :-)
- *
- */
-
-#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_GEMTEK_PORT 	*/
-#include <linux/spinlock.h>
-
-#ifndef CONFIG_RADIO_GEMTEK_PORT
-#define CONFIG_RADIO_GEMTEK_PORT -1
-#endif
-
-static int io = CONFIG_RADIO_GEMTEK_PORT; 
-static int users = 0;
-static spinlock_t lock;
-
-struct gemtek_device
-{
-	int port;
-	unsigned long curfreq;
-	int muted;
-};
-
-
-/* local things */
-
-/* the correct way to mute the gemtek may be to write the last written
- * frequency || 0x10, but just writing 0x10 once seems to do it as well
- */
-static void gemtek_mute(struct gemtek_device *dev)
-{
-        if(dev->muted)
-		return;
-	spin_lock(&lock);
-	outb(0x10, io);
-	spin_unlock(&lock);
-	dev->muted = 1;
-}
-
-static void gemtek_unmute(struct gemtek_device *dev)
-{
-	if(dev->muted == 0)
-		return;
-	spin_lock(&lock);
-	outb(0x20, io);
-	spin_unlock(&lock);
-	dev->muted = 0;
-}
-
-static void zero(void)
-{
-	outb_p(0x04, io);
-	udelay(5);
-	outb_p(0x05, io);
-	udelay(5);
-}
-
-static void one(void)
-{
-	outb_p(0x06, io);
-	udelay(5);
-	outb_p(0x07, io);
-	udelay(5);
-}
-
-static int gemtek_setfreq(struct gemtek_device *dev, unsigned long freq)
-{
-	int i;
-
-/*        freq = 78.25*((float)freq/16000.0 + 10.52); */
-
-	freq /= 16;
-	freq += 10520;
-	freq *= 7825;
-	freq /= 100000;
-
-	spin_lock(&lock);
-	
-	/* 2 start bits */
-	outb_p(0x03, io);
-	udelay(5);
-	outb_p(0x07, io);
-	udelay(5);
-
-        /* 28 frequency bits (lsb first) */
-	for (i = 0; i < 14; i++)
-		if (freq & (1 << i))
-			one();
-		else
-			zero();
-        /* 36 unknown bits */
-	for (i = 0; i < 11; i++)
-		zero();
-	one();
-	for (i = 0; i < 4; i++)
-		zero();
-	one();
-	zero();
-
-	/* 2 end bits */
-	outb_p(0x03, io);
-	udelay(5);
-	outb_p(0x07, io);
-	udelay(5);
-
-	spin_unlock(&lock);
-	
-	return 0;
-}
-
-int gemtek_getsigstr(struct gemtek_device *dev)
-{
-	spin_lock(&lock);
-	inb(io);
-	udelay(5);
-	spin_unlock(&lock);
-	if (inb(io) & 8)		/* bit set = no signal present */
-		return 0;
-	return 1;		/* signal present */
-}
-
-static int gemtek_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
-	struct gemtek_device *rt=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, "GemTek");
-			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;
-			v.signal=0xFFFF*gemtek_getsigstr(rt);
-			strcpy(v.name, "FM");
-			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, &rt->curfreq, sizeof(rt->curfreq)))
-				return -EFAULT;
-			return 0;
-		case VIDIOCSFREQ:
-			if(copy_from_user(&rt->curfreq, arg,sizeof(rt->curfreq)))
-				return -EFAULT;
-		/* needs to be called twice in order for getsigstr to work */
-			gemtek_setfreq(rt, rt->curfreq);
-			gemtek_setfreq(rt, rt->curfreq);
-			return 0;
-		case VIDIOCGAUDIO:
-		{	
-			struct video_audio v;
-			memset(&v,0, sizeof(v));
-			v.flags|=VIDEO_AUDIO_MUTABLE;
-			v.volume=1;
-			v.step=65535;
-			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) 
-				gemtek_mute(rt);
-			else
-			        gemtek_unmute(rt);
-
-			return 0;
-		}
-		default:
-			return -ENOIOCTLCMD;
-	}
-}
-
-static int gemtek_open(struct video_device *dev, int flags)
-{
-	if(users)
-		return -EBUSY;
-	users++;
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static void gemtek_close(struct video_device *dev)
-{
-	users--;
-	MOD_DEC_USE_COUNT;
-}
-
-static struct gemtek_device gemtek_unit;
-
-static struct video_device gemtek_radio=
-{
-	"GemTek radio",
-	VID_TYPE_TUNER,
-	VID_HARDWARE_GEMTEK,
-	gemtek_open,
-	gemtek_close,
-	NULL,	/* Can't read  (no capture ability) */
-	NULL,	/* Can't write */
-	NULL,	/* Can't poll */
-	gemtek_ioctl,
-	NULL,
-	NULL
-};
-
-static int __init gemtek_init(void)
-{
-	if(io==-1)
-	{
-		printk(KERN_ERR "You must set an I/O address with io=0x20c, io=0x30c, io=0x24c or io=0x34c (io=0x020c or io=0x248 for the combined sound/radiocard)\n");
-		return -EINVAL;
-	}
-
-	if (check_region(io, 4)) 
-	{
-		printk(KERN_ERR "gemtek: port 0x%x already in use\n", io);
-		return -EBUSY;
-	}
-
-	gemtek_radio.priv=&gemtek_unit;
-	
-	if(video_register_device(&gemtek_radio, VFL_TYPE_RADIO)==-1)
-		return -EINVAL;
-		
-	request_region(io, 4, "gemtek");
-	printk(KERN_INFO "GemTek Radio Card driver.\n");
-
-	spin_lock_init(&lock);
- 	/* mute card - prevents noisy bootups */
-	outb(0x10, io);
-	udelay(5);
-	gemtek_unit.muted = 1;
-
-	/* this is _maybe_ unnecessary */
-	outb(0x01, io);
-
-	return 0;
-}
-
-MODULE_AUTHOR("Jonas Munsin");
-MODULE_DESCRIPTION("A driver for the GemTek Radio Card");
-MODULE_PARM(io, "i");
-MODULE_PARM_DESC(io, "I/O address of the GemTek card (0x20c, 0x30c, 0x24c or 0x34c (0x20c or 0x248 have been reported to work for the combined sound/radiocard)).");
-
-EXPORT_NO_SYMBOLS;
-
-static void __exit gemtek_cleanup(void)
-{
-	video_unregister_device(&gemtek_radio);
-	release_region(io,4);
-}
-
-module_init(gemtek_init);
-module_exit(gemtek_cleanup);
-
-/*
-  Local variables:
-  compile-command: "gcc -c -DMODVERSIONS -D__KERNEL__ -DMODULE -O6 -Wall -Wstrict-prototypes -I /home/blp/tmp/linux-2.1.111-rtrack/include radio-rtrack2.c"
-  End:
-*/