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

• Lines: 351
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test6/linux/drivers/char/radio-trust.c
• Orig date: Mon Nov 1 13:56:26 1999

diff -u --recursive --new-file v2.4.0-test6/linux/drivers/char/radio-trust.c linux/drivers/char/radio-trust.c
@@ -1,350 +0,0 @@
-/* radio-trust.c - Trust FM Radio card driver for Linux 2.2 
- * by Eric Lammerts <eric@scintilla.utwente.nl>
- *
- * Based on radio-aztech.c. Original notes:
- *
- * 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/
- */
-
-#include <stdarg.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <linux/videodev.h>
-#include <linux/config.h>	/* CONFIG_RADIO_TRUST_PORT 	*/
-
-/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
-
-#ifndef CONFIG_RADIO_TRUST_PORT
-#define CONFIG_RADIO_TRUST_PORT -1
-#endif
-
-static int io = CONFIG_RADIO_TRUST_PORT; 
-static int ioval = 0xf;
-static int users = 0;
-static __u16 curvol;
-static __u16 curbass;
-static __u16 curtreble;
-static unsigned long curfreq;
-static int curstereo;
-static int curmute;
-
-/* i2c addresses */
-#define TDA7318_ADDR 0x88
-#define TSA6060T_ADDR 0xc4
-
-#define TR_DELAY do { inb(io); inb(io); inb(io); } while(0)
-#define TR_SET_SCL outb(ioval |= 2, io)
-#define TR_CLR_SCL outb(ioval &= 0xfd, io)
-#define TR_SET_SDA outb(ioval |= 1, io)
-#define TR_CLR_SDA outb(ioval &= 0xfe, io)
-
-static void write_i2c(int n, ...)
-{
-	unsigned char val, mask;
-	va_list args;
-
-	va_start(args, n);
-
-	/* start condition */
-	TR_SET_SDA;
-	TR_SET_SCL;
-	TR_DELAY;
-	TR_CLR_SDA;
-	TR_CLR_SCL;
-	TR_DELAY;
-
-	for(; n; n--) {
-		val = va_arg(args, unsigned);
-		for(mask = 0x80; mask; mask >>= 1) {
-			if(val & mask)
-				TR_SET_SDA;
-			else
-				TR_CLR_SDA;
-			TR_SET_SCL;
-			TR_DELAY;
-			TR_CLR_SCL;
-			TR_DELAY;
-		}
-		/* acknowledge bit */
-		TR_SET_SDA;
-		TR_SET_SCL;
-		TR_DELAY;
-		TR_CLR_SCL;
-		TR_DELAY;
-	}
-
-	/* stop condition */
-	TR_CLR_SDA;
-	TR_DELAY;
-	TR_SET_SCL;
-	TR_DELAY;
-	TR_SET_SDA;
-	TR_DELAY;
-
-	va_end(args);
-}
-
-static void tr_setvol(__u16 vol)
-{
-	curvol = vol / 2048;
-	write_i2c(2, TDA7318_ADDR, curvol ^ 0x1f);
-}
-
-static int basstreble2chip[15] = {
-	0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8
-};
-
-static void tr_setbass(__u16 bass)
-{
-	curbass = bass / 4370;
-	write_i2c(2, TDA7318_ADDR, 0x60 | basstreble2chip[curbass]);
-}
-
-static void tr_settreble(__u16 treble)
-{
-	curtreble = treble / 4370;
-	write_i2c(2, TDA7318_ADDR, 0x70 | basstreble2chip[curtreble]);
-}
-
-static void tr_setstereo(int stereo)
-{
-	curstereo = !!stereo;
-	ioval = (ioval & 0xfb) | (!curstereo << 2);
-	outb(ioval, io);
-}
-
-static void tr_setmute(int mute)
-{
-	curmute = !!mute;
-	ioval = (ioval & 0xf7) | (curmute << 3);
-	outb(ioval, io);
-}
-
-static int tr_getsigstr(void)
-{
-	int i, v;
-	
-	for(i = 0, v = 0; i < 100; i++) v |= inb(io);
-	return (v & 1)? 0 : 0xffff;
-}
-
-static int tr_getstereo(void)
-{
-	/* don't know how to determine it, just return the setting */
-	return curstereo;
-}
-
-static void tr_setfreq(unsigned long f)
-{
-	f /= 160;	/* Convert to 10 kHz units	*/
-	f += 1070;	/* Add 10.7 MHz IF			*/
-
-	write_i2c(5, TSA6060T_ADDR, (f << 1) | 1, f >> 7, 0x60 | ((f >> 15) & 1), 0);
-}
-
-static int tr_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
-	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, "Trust FM 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 = 87500 * 16;
-			v.rangehigh = 108000 * 16;
-			v.flags = VIDEO_TUNER_LOW;
-			v.mode = VIDEO_MODE_AUTO;
-
-			v.signal = tr_getsigstr();
-			if(tr_getstereo())
-				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;
-
-			return 0;
-		}
-		case VIDIOCGFREQ:
-			if(copy_to_user(arg, &curfreq, sizeof(curfreq)))
-				return -EFAULT;
-			return 0;
-
-		case VIDIOCSFREQ:
-		{
-			unsigned long f;
-
-			if(copy_from_user(&f, arg, sizeof(curfreq)))
-				return -EFAULT;
-			tr_setfreq(f);
-			return 0;
-		}
-		case VIDIOCGAUDIO:
-		{	
-			struct video_audio v;
-
-			memset(&v,0, sizeof(v));
-			v.flags = VIDEO_AUDIO_MUTABLE | VIDEO_AUDIO_VOLUME |
-			          VIDEO_AUDIO_BASS | VIDEO_AUDIO_TREBLE;
-			v.mode = curstereo? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
-			v.volume = curvol * 2048;
-			v.step = 2048;
-			v.bass = curbass * 4370;
-			v.treble = curtreble * 4370;
-			
-			strcpy(v.name, "Trust FM 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;
-
-			tr_setvol(v.volume);					
-			tr_setbass(v.bass);
-			tr_settreble(v.treble);
-			tr_setstereo(v.mode & VIDEO_SOUND_STEREO);
-			tr_setmute(v.flags & VIDEO_AUDIO_MUTE);
-			return 0;
-		}
-		default:
-			return -ENOIOCTLCMD;
-	}
-}
-
-static int tr_open(struct video_device *dev, int flags)
-{
-	if(users)
-		return -EBUSY;
-	users++;
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static void tr_close(struct video_device *dev)
-{
-	users--;
-	MOD_DEC_USE_COUNT;
-}
-
-static struct video_device trust_radio=
-{
-	"Trust FM Radio",
-	VID_TYPE_TUNER,
-	VID_HARDWARE_TRUST,
-	tr_open,
-	tr_close,
-	NULL,	/* Can't read  (no capture ability) */
-	NULL,	/* Can't write */
-	NULL,	/* No poll */
-	tr_ioctl,
-	NULL,
-	NULL
-};
-
-static int __init trust_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 "trust: port 0x%x already in use\n", io);
-		return -EBUSY;
-	}
-	if(video_register_device(&trust_radio, VFL_TYPE_RADIO)==-1)
-		return -EINVAL;
-		
-	request_region(io, 2, "Trust FM Radio");
-
-	printk(KERN_INFO "Trust FM Radio card driver v1.0.\n");
-
-	write_i2c(2, TDA7318_ADDR, 0x80);	/* speaker att. LF = 0 dB */
-	write_i2c(2, TDA7318_ADDR, 0xa0);	/* speaker att. RF = 0 dB */
-	write_i2c(2, TDA7318_ADDR, 0xc0);	/* speaker att. LR = 0 dB */
-	write_i2c(2, TDA7318_ADDR, 0xe0);	/* speaker att. RR = 0 dB */
-	write_i2c(2, TDA7318_ADDR, 0x40);	/* stereo 1 input, gain = 18.75 dB */
-
-	tr_setvol(0x8000);					
-	tr_setbass(0x8000);
-	tr_settreble(0x8000);
-	tr_setstereo(1);
-
-	/* mute card - prevents noisy bootups */
-	tr_setmute(1);
-
-	return 0;
-}
-
-MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
-MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
-MODULE_PARM(io, "i");
-MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)");
-
-EXPORT_NO_SYMBOLS;
-
-static void __exit cleanup_trust_module(void)
-{
-	video_unregister_device(&trust_radio);
-	release_region(io, 2);
-}
-
-module_init(trust_init);
-module_exit(cleanup_trust_module);