patch-2.1.110 linux/drivers/char/rtrack.c

• Lines: 214
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.109/linux/drivers/char/rtrack.c
• Orig date: Sun Jun 7 11:16:30 1998

diff -u --recursive --new-file v2.1.109/linux/drivers/char/rtrack.c linux/drivers/char/rtrack.c
@@ -1,213 +0,0 @@
-/* radiotrack (radioreveal) driver for Linux radio support
- * (c) 1997 M. Kirkwood
- */
-/* TODO: Allow for more than one of these foolish entities :-) */
-
-/* Notes on the hardware (reverse engineered from other peoples'
- * reverse engineering of AIMS' code :-)
- *
- *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
- *
- *  The signal strength query is unsurprisingly inaccurate.  And it seems
- *  to indicate that (on my card, at least) the frequency setting isn't
- *  too great.  (I have to tune up .025MHz from what the freq should be
- *  to get a report that the thing is tuned.)
- *
- *  Volume control is (ugh) analogue:
- *   out(port, start_increasing_volume);
- *   wait(a_wee_while);
- *   out(port, stop_changing_the_volume);
- *  
- */
-
-#include <linux/config.h>
-#include <linux/radio.h>
-#include <linux/ioport.h>
-
-#include <linux/delay.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#include "rtrack.h"
-
-/* Let's just be a bit careful here, shall we? */
-#if (CONFIG_RADIO_RTRACK_PORT != 0x20f) && (CONFIG_RADIO_RTRACK_PORT != 0x30f)
-#error Invalid port specified for RadioTrack
-#endif
-
-/* local prototypes */
-void outbits(int bits, int data, int port);
-void decvol(int port);
-void incvol(int port);
-void mute(int port);
-void unmute(int port);
-
-/* public structurey-type things */
-int rt_port = CONFIG_RADIO_RTRACK_PORT;
-
-struct radio_cap rt_cap = {
-	0,			/* device index (not dealt with here) */
-	RADIO_TYPE_RTRACK,	/* type */
-	1,			/* number of bandwidths */
-	0, 10			/* volmin, volmax */
-};
-
-/* we only get one band/protocol with radiotrack */
-struct radio_band rt_band = {
-	0,			/* device index */
-	0,			/* bandwidth "index" */
-	RADIO_PROTOCOL_FM,
-	RADIO_BAND_FM_STD,
-	RADIO_FM_FRTOINT(88.0),	/* freq range */
-	RADIO_FM_FRTOINT(108.0),
-	0,1			/* sig strength range */
-};
-
-/* p'raps these should become struct radio_ops and struct radio_status? */
-struct radio_device rt_dev = {
-	&rt_cap,
-	&rt_band,
-	&rt_setvol,
-	0,				/* curvol */
-	&rt_setband,
-	0,				/* curband */
-	&rt_setfreq,
-	0,				/* curfreq */
-	&rt_getsigstr,
-	NULL,				/* next (to be filled in later) */
-	&rt_port			/* misc */
-};
-
-
-void radiotrack_init()
-{
-int dev_num, i;
-
-/* XXX - probe here?? - XXX */
-
-/* try to grab the i/o port */
-	if(check_region(rt_port,2)) {
-		printk("rtrack.c: port 0x%x already used\n", rt_port);
-		return;
-	}
-
-	request_region(rt_port,2,"rtrack");
-
-	dev_num = radio_add_device(&rt_dev);
-/* initialise the card */
-	/* set the volume very low */
-	for(i=rt_cap.volmax; i>rt_cap.volmin; i--)
-		decvol(rt_port);
-	rt_dev.curvol = rt_cap.volmin;
-}
-
-
-int rt_setvol(struct radio_device *dev, int vol)
-{
-int port, i;
-
-	if(vol == dev->curvol)
-		return 0;
-
-	port = *(int*)(dev->misc);
-	if(vol == 0)
-		mute(port);
-
-	if(vol > dev->curvol)
-		for(i = dev->curvol; i < vol; i++)
-			incvol(port);
-	else
-		for(i = dev->curvol; i > vol; i--)
-			decvol(port);
-
-	if(dev->curvol == 0)
-		unmute(port);
-
-	return 0;
-}
-
-
-int rt_setband(struct radio_device *dev, int band)
-{
-/* we know in advance that we only have one band, and
- * the wrapper checks the validity of all the inputs
- */
-	return 0;
-}
-
-int rt_setfreq(struct radio_device *dev, int freq)
-{
-int myport = *(int*)(dev->misc);
-
-	outbits(16, RTRACK_ENCODE(freq), myport);
-	outbits(8, 0xa0, myport);
-/* XXX - get rid of this once setvol is implemented properly - XXX */
-/* these insist on turning the thing on.  not sure I approve... */
-	mdelay(1);
-	outb(0, myport);
-	outb(0xc8, myport);
-
-	return 0;
-}
-
-int rt_getsigstr(struct radio_device *dev)
-{
-int res;
-int myport = *(int*)(dev->misc);
-
-	outb(0xf8, myport);
-	mdelay(200);
-	res = (int)inb(myport);
-	mdelay(10);
-	outb(0xe8, myport);
-	if(res == 0xfd)
-		return 1;
-	else
-		return 0;
-}
-
-
-/* local things */
-void outbits(int bits, int data, int port)
-{
-	while(bits--) {
-		if(data & 1) {
-			outw(5, port);
-			outw(5, port);
-			outw(7, port);
-			outw(7, port);
-		} else {
-			outw(1, port);
-			outw(1, port);
-			outw(3, port);
-			outw(3, port);
-		}
-		data>>=1;
-	}
-}
-
-void decvol(int port)
-{
-	outb(0x48, port);
-	mdelay(100);
-	outb(0xc8, port);
-}
-
-void incvol(int port)
-{
-	outb(0x88, port);
-	mdelay(100);
-	outb(0xc8, port);
-}
-
-void mute(int port)
-{
-	outb(0, port);
-	outb(0xc0, port);
-}
-
-void unmute(int port)
-{
-	outb(0, port);
-	outb(0xc8, port);
-}