patch-2.4.0-test7 linux/drivers/char/radio-sf16fmi.c

• Lines: 340
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test6/linux/drivers/char/radio-sf16fmi.c
• Orig date: Mon Nov 1 13:56:26 1999

diff -u --recursive --new-file v2.4.0-test6/linux/drivers/char/radio-sf16fmi.c linux/drivers/char/radio-sf16fmi.c
@@ -1,339 +0,0 @@
-/* SF16FMI radio driver for Linux radio support
- * heavily based on rtrack driver...
- * (c) 1997 M. Kirkwood
- * (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz
- *
- * Fitted to new interface by Alan Cox <alan.cox@linux.org>
- * Made working and cleaned up functions <mikael.hedin@irf.se>
- *
- * Notes on the hardware
- *
- *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
- *  No volume control - only mute/unmute - you have to use line volume
- *  control on SB-part of SF16FMI
- *  
- */
-
-#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_SF16MI_PORT 	*/
-#include <asm/semaphore.h>
-
-struct fmi_device
-{
-	int port;
-        int curvol; /* 1 or 0 */
-        unsigned long curfreq; /* freq in kHz */
-        __u32 flags;
-};
-
-#ifndef CONFIG_RADIO_SF16FMI_PORT
-#define CONFIG_RADIO_SF16FMI_PORT -1
-#endif
-
-static int io = CONFIG_RADIO_SF16FMI_PORT; 
-static int users = 0;
-static struct semaphore lock;
-
-/* freq is in 1/16 kHz to internal number, hw precision is 50 kHz */
-/* It is only usefull to give freq in intervall of 800 (=0.05Mhz),
- * other bits will be truncated, e.g 92.7400016 -> 92.7, but 
- * 92.7400017 -> 92.75
- */
-#define RSF16_ENCODE(x)	((x)/800+214)
-#define RSF16_MINFREQ 87*16000
-#define RSF16_MAXFREQ 108*16000
-
-static void outbits(int bits, unsigned int data, int port)
-{
-	while(bits--) {
- 		if(data & 1) {
-			outb(5, port);
-			udelay(6);
-			outb(7, port);
-			udelay(6);
-		} else {
-			outb(1, port);
-			udelay(6);
-			outb(3, port);
-			udelay(6);
-		}
-		data>>=1;
-	}
-}
-
-static inline void fmi_mute(int port)
-{
-	down(&lock);
-	outb(0x00, port);
-	up(&lock);
-}
-
-static inline void fmi_unmute(int port)
-{
-	down(&lock);
-	outb(0x08, port);
-	up(&lock);
-}
-
-static inline int fmi_setfreq(struct fmi_device *dev)
-{
-        int myport = dev->port;
-	unsigned long freq = dev->curfreq;
-	int i;
-	
-	down(&lock);
-	
-	outbits(16, RSF16_ENCODE(freq), myport);
-	outbits(8, 0xC0, myport);
-	for(i=0; i< 100; i++)
-	{
-		udelay(1400);
-		if(current->need_resched)
-			schedule();
-	}
-/* If this becomes allowed use it ... 	
-	current->state = TASK_UNINTERRUPTIBLE;
-	schedule_timeout(HZ/7);
-*/	
-
-	up(&lock);
-	if (dev->curvol) fmi_unmute(myport);
-	return 0;
-}
-
-static inline int fmi_getsigstr(struct fmi_device *dev)
-{
-	int val;
-	int res;
-	int myport = dev->port;
-	int i;
-	
-	down(&lock);
-	val = dev->curvol ? 0x08 : 0x00;	/* unmute/mute */
-	outb(val, myport);
-	outb(val | 0x10, myport);
-	for(i=0; i< 100; i++)
-	{
-		udelay(1400);
-		if(current->need_resched)
-			schedule();
-	}
-/* If this becomes allowed use it ... 	
-	current->state = TASK_UNINTERRUPTIBLE;
-	schedule_timeout(HZ/7);
-*/	
-	res = (int)inb(myport+1);
-	outb(val, myport);
-	
-	up(&lock);
-	return (res & 2) ? 0 : 0xFFFF;
-}
-
-static int fmi_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
-	struct fmi_device *fmi=dev->priv;
-	
-	switch(cmd)
-	{
-		case VIDIOCGCAP:
-		{
-			struct video_capability v;
-			strcpy(v.name, "SF16-FMx radio");
-			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;
-			if(copy_to_user(arg,&v,sizeof(v)))
-				return -EFAULT;
-			return 0;
-		}
-		case VIDIOCGTUNER:
-		{
-			struct video_tuner v;
-			int mult;
-
-			if(copy_from_user(&v, arg,sizeof(v))!=0)
-				return -EFAULT;
-			if(v.tuner)	/* Only 1 tuner */
-				return -EINVAL;
-			strcpy(v.name, "FM");
-			mult = (fmi->flags & VIDEO_TUNER_LOW) ? 1 : 1000;
-			v.rangelow = RSF16_MINFREQ/mult;
-			v.rangehigh = RSF16_MAXFREQ/mult;
-			v.flags=fmi->flags;
-			v.mode=VIDEO_MODE_AUTO;
-			v.signal = fmi_getsigstr(fmi);
-			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;
-			fmi->flags = v.flags & VIDEO_TUNER_LOW;
-			/* Only 1 tuner so no setting needed ! */
-			return 0;
-		}
-		case VIDIOCGFREQ:
-		{
-			unsigned long tmp = fmi->curfreq;
-			if (!(fmi->flags & VIDEO_TUNER_LOW))
-				tmp /= 1000;
-			if(copy_to_user(arg, &tmp, sizeof(tmp)))
-				return -EFAULT;
-			return 0;
-		}
-		case VIDIOCSFREQ:
-		{
-			unsigned long tmp;
-			if(copy_from_user(&tmp, arg, sizeof(tmp)))
-				return -EFAULT;
-			if (!(fmi->flags & VIDEO_TUNER_LOW))
-				tmp *= 1000;
-			if ( tmp<RSF16_MINFREQ || tmp>RSF16_MAXFREQ )
-			  return -EINVAL;
-			/*rounding in steps of 800 to match th freq
-			  that will be used */
-			fmi->curfreq = (tmp/800)*800; 
-			fmi_setfreq(fmi);
-			return 0;
-		}
-		case VIDIOCGAUDIO:
-		{	
-			struct video_audio v;
-			v.audio=0;
-			v.volume=0;
-			v.bass=0;
-			v.treble=0;
-			v.flags=( (!fmi->curvol)*VIDEO_AUDIO_MUTE | VIDEO_AUDIO_MUTABLE);
-			strcpy(v.name, "Radio");
-			v.mode=VIDEO_SOUND_STEREO;
-			v.balance=0;
-			v.step=0; /* No volume, just (un)mute */
-			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;
-			fmi->curvol= v.flags&VIDEO_AUDIO_MUTE ? 0 : 1;
-			fmi->curvol ? 
-			  fmi_unmute(fmi->port) : fmi_mute(fmi->port);
-			return 0;
-		}
-	        case VIDIOCGUNIT:
-		{
-               		struct video_unit v;
-			v.video=VIDEO_NO_UNIT;
-			v.vbi=VIDEO_NO_UNIT;
-			v.radio=dev->minor;
-			v.audio=0; /* How do we find out this??? */
-			v.teletext=VIDEO_NO_UNIT;
-			if(copy_to_user(arg, &v, sizeof(v)))
-				return -EFAULT;
-			return 0;			
-		}
-		default:
-			return -ENOIOCTLCMD;
-	}
-}
-
-static int fmi_open(struct video_device *dev, int flags)
-{
-	if(users)
-		return -EBUSY;
-	users++;
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static void fmi_close(struct video_device *dev)
-{
-	users--;
-	MOD_DEC_USE_COUNT;
-}
-
-static struct fmi_device fmi_unit;
-
-static struct video_device fmi_radio=
-{
-	"SF16FMx radio",
-	VID_TYPE_TUNER,
-	VID_HARDWARE_SF16MI,
-	fmi_open,
-	fmi_close,
-	NULL,	/* Can't read  (no capture ability) */
-	NULL,	/* Can't write */
-	NULL,	/* Can't poll */
-	fmi_ioctl,
-	NULL,
-	NULL
-};
-
-static int __init fmi_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 "fmi: port 0x%x already in use\n", io);
-		return -EBUSY;
-	}
-
-	fmi_unit.port = io;
-	fmi_unit.curvol = 0;
-	fmi_unit.curfreq = 0;
-	fmi_unit.flags = VIDEO_TUNER_LOW;
-	fmi_radio.priv = &fmi_unit;
-	
-	init_MUTEX(&lock);
-	
-	if(video_register_device(&fmi_radio, VFL_TYPE_RADIO)==-1)
-		return -EINVAL;
-		
-	request_region(io, 2, "fmi");
-	printk(KERN_INFO "SF16FMx radio card driver at 0x%x.\n", io);
-	printk(KERN_INFO "(c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz.\n");
-	/* mute card - prevents noisy bootups */
-	fmi_mute(io);
-	return 0;
-}
-
-MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
-MODULE_DESCRIPTION("A driver for the SF16MI radio.");
-MODULE_PARM(io, "i");
-MODULE_PARM_DESC(io, "I/O address of the SF16MI card (0x284 or 0x384)");
-
-EXPORT_NO_SYMBOLS;
-
-static void __exit fmi_cleanup_module(void)
-{
-	video_unregister_device(&fmi_radio);
-	release_region(io,2);
-}
-
-module_init(fmi_init);
-module_exit(fmi_cleanup_module);
-