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

• Lines: 331
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test6/linux/drivers/char/radio-aztech.c
• Orig date: Mon Oct 4 15:49:29 1999

diff -u --recursive --new-file v2.4.0-test6/linux/drivers/char/radio-aztech.c linux/drivers/char/radio-aztech.c
@@ -1,330 +0,0 @@
-/* radio-aztech.c - Aztech radio card driver for Linux 2.2 
- *
- * Adapted to support the Video for Linux API by 
- * Russell Kroll <rkroll@exploits.org>.  Based on original tuner code by:
- *
- * Quay Ly
- * Donald Song
- * Jason Lewis      (jlewis@twilight.vtc.vsc.edu) 
- * Scott McGrath    (smcgrath@twilight.vtc.vsc.edu)
- * William McGrath  (wmcgrath@twilight.vtc.vsc.edu)
- *
- * The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
- * along with more information on the card itself.
- *
- * History:
- * 1999-02-24	Russell Kroll <rkroll@exploits.org>
- *		Fine tuning/VIDEO_TUNER_LOW
- * 		Range expanded to 87-108 MHz (from 87.9-107.8)
- *
- * Notable changes from the original source:
- * - includes stripped down to the essentials
- * - for loops used as delays replaced with udelay()
- * - #defines removed, changed to static values
- * - tuning structure changed - no more character arrays, other changes
-*/
-
-#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_AZTECH_PORT 	*/
-
-/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
-
-#ifndef CONFIG_RADIO_AZTECH_PORT
-#define CONFIG_RADIO_AZTECH_PORT -1
-#endif
-
-static int io = CONFIG_RADIO_AZTECH_PORT; 
-static int radio_wait_time = 1000;
-static int users = 0;
-static struct semaphore lock;
-
-struct az_device
-{
-	int curvol;
-	unsigned long curfreq;
-	int stereo;
-};
-
-static int volconvert(int level)
-{
-	level>>=14;	 	/* Map 16bits down to 2 bit */
- 	level&=3;
-	
-	/* convert to card-friendly values */
-	switch (level) 
-	{
-		case 0: 
-			return 0;
-		case 1: 
-			return 1;
-		case 2:
-			return 4;
-		case 3:
-			return 5;
-	}
-	return 0;	/* Quieten gcc */
-}
-
-static void send_0_byte (struct az_device *dev)
-{
-	udelay(radio_wait_time);
-	outb_p(2+volconvert(dev->curvol), io);
-	outb_p(64+2+volconvert(dev->curvol), io);
-}
-
-static void send_1_byte (struct az_device *dev)
-{
-	udelay (radio_wait_time);
-	outb_p(128+2+volconvert(dev->curvol), io);
-	outb_p(128+64+2+volconvert(dev->curvol), io);
-}
-
-static int az_setvol(struct az_device *dev, int vol)
-{
-	down(&lock);
-	outb (volconvert(vol), io);
-	up(&lock);
-	return 0;
-}
-
-/* thanks to Michael Dwyer for giving me a dose of clues in
- * the signal strength department..
- *
- * This card has a stereo bit - bit 0 set = mono, not set = stereo
- * It also has a "signal" bit - bit 1 set = bad signal, not set = good
- *
- */
-
-static int az_getsigstr(struct az_device *dev)
-{
-	if (inb(io) & 2)	/* bit set = no signal present */
-		return 0;
-	return 1;		/* signal present */
-}
-
-static int az_getstereo(struct az_device *dev)
-{
-	if (inb(io) & 1) 	/* bit set = mono */
-		return 0;
-	return 1;		/* stereo */
-}
-
-static int az_setfreq(struct az_device *dev, unsigned long frequency)
-{
-	int  i;
-
-	frequency += 171200;		/* Add 10.7 MHz IF		*/
-	frequency /= 800;		/* Convert to 50 kHz units	*/
-					
-	down(&lock);
-	
-	send_0_byte (dev);		/*  0: LSB of frequency       */
-
-	for (i = 0; i < 13; i++)	/*   : frequency bits (1-13)  */
-		if (frequency & (1 << i))
-			send_1_byte (dev);
-		else
-			send_0_byte (dev);
-
-	send_0_byte (dev);		/* 14: test bit - always 0    */
-	send_0_byte (dev);		/* 15: test bit - always 0    */
-	send_0_byte (dev);		/* 16: band data 0 - always 0 */
-	if (dev->stereo)		/* 17: stereo (1 to enable)   */
-		send_1_byte (dev);
-	else
-		send_0_byte (dev);
-
-	send_1_byte (dev);		/* 18: band data 1 - unknown  */
-	send_0_byte (dev);		/* 19: time base - always 0   */
-	send_0_byte (dev);		/* 20: spacing (0 = 25 kHz)   */
-	send_1_byte (dev);		/* 21: spacing (1 = 25 kHz)   */
-	send_0_byte (dev);		/* 22: spacing (0 = 25 kHz)   */
-	send_1_byte (dev);		/* 23: AM/FM (FM = 1, always) */
-
-	/* latch frequency */
-
-	udelay (radio_wait_time);
-	outb_p(128+64+volconvert(dev->curvol), io);
-	
-	up(&lock);
-
-	return 0;
-}
-
-static int az_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
-	struct az_device *az=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, "Aztech Radio");
-			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*az_getsigstr(az);
-			if(az_getstereo(az))
-				v.flags|=VIDEO_TUNER_STEREO_ON;
-			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, &az->curfreq, sizeof(az->curfreq)))
-				return -EFAULT;
-			return 0;
-		case VIDIOCSFREQ:
-			if(copy_from_user(&az->curfreq, arg,sizeof(az->curfreq)))
-				return -EFAULT;
-			az_setfreq(az, az->curfreq);
-			return 0;
-		case VIDIOCGAUDIO:
-		{	
-			struct video_audio v;
-			memset(&v,0, sizeof(v));
-			v.flags|=VIDEO_AUDIO_MUTABLE|VIDEO_AUDIO_VOLUME;
-			if(az->stereo)
-				v.mode=VIDEO_SOUND_STEREO;
-			else
-				v.mode=VIDEO_SOUND_MONO;
-			v.volume=az->curvol;
-			v.step=16384;
-			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;
-			az->curvol=v.volume;
-
-			az->stereo=(v.mode&VIDEO_SOUND_STEREO)?1:0;
-			if(v.flags&VIDEO_AUDIO_MUTE) 
-				az_setvol(az,0);
-			else
-				az_setvol(az,az->curvol);								
-			return 0;
-		}
-		default:
-			return -ENOIOCTLCMD;
-	}
-}
-
-static int az_open(struct video_device *dev, int flags)
-{
-	if(users)
-		return -EBUSY;
-	users++;
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static void az_close(struct video_device *dev)
-{
-	users--;
-	MOD_DEC_USE_COUNT;
-}
-
-static struct az_device aztech_unit;
-
-static struct video_device aztech_radio=
-{
-	"Aztech radio",
-	VID_TYPE_TUNER,
-	VID_HARDWARE_AZTECH,
-	az_open,
-	az_close,
-	NULL,	/* Can't read  (no capture ability) */
-	NULL,	/* Can't write */
-	NULL,	/* No poll */
-	az_ioctl,
-	NULL,
-	NULL
-};
-
-static int __init aztech_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 "aztech: port 0x%x already in use\n", io);
-		return -EBUSY;
-	}
-
-	init_MUTEX(&lock);
-	aztech_radio.priv=&aztech_unit;
-	
-	if(video_register_device(&aztech_radio, VFL_TYPE_RADIO)==-1)
-		return -EINVAL;
-		
-	request_region(io, 2, "aztech");
-	printk(KERN_INFO "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
-	/* mute card - prevents noisy bootups */
-	outb (0, io);
-	return 0;
-}
-
-MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
-MODULE_DESCRIPTION("A driver for the Aztech radio card.");
-MODULE_PARM(io, "i");
-MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
-
-EXPORT_NO_SYMBOLS;
-
-static void __exit aztech_cleanup(void)
-{
-	video_unregister_device(&aztech_radio);
-	release_region(io,2);
-}
-
-module_init(aztech_init);
-module_exit(aztech_cleanup);