patch-2.1.63 linux/include/linux/radio.h

• Lines: 135
• Date: Tue Nov 4 10:23:25 1997
• Orig file: v2.1.62/linux/include/linux/radio.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.62/linux/include/linux/radio.h linux/include/linux/radio.h
@@ -0,0 +1,134 @@
+/*
+ * linux/radio.h
+ *
+ * Include for radio card support under linux
+ * Another pointless suid-binary removal utility... :-)
+ */
+
+#ifndef _LINUX_RADIO_H
+#define _LINUX_RADIO_H
+
+#include <linux/ioctl.h>
+
+/*
+ * Constants
+ */
+/* Various types of Radio card... */
+/* (NB.  I've made this a bit-field.  It might make the difference one day.) */
+#define	RADIO_TYPE_UNSUP	0x0000
+#define	RADIO_TYPE_RTRACK	0x0001	/* AIMSlab RadioTrack (RadioReveal) card -- basic, to say the least */
+#define	RADIO_TYPE_WINRADIO	0x0002	/* Dunno, but made by someone */
+#define	RADIO_TYPE_TYPHOON	0x0004	/* It exists... */
+
+/* waveband types */
+#define	RADIO_PROTOCOL_AM	0x0010	/* AM "protocol" */
+#define	RADIO_PROTOCOL_FM	0x0020	/* FM "protocol" */
+#define	RADIO_PROTOCOL_SSB	0x0040	/* SSB */
+/* and no doubt some other stuff, too (Brian?) */
+
+
+/* the following are _very_ inaccurate; essentially, all that
+ * they do is provide a "name" for client programs
+ */
+#define	RADIO_BAND_UNKNOWN	0x0000	/* other */
+#define	RADIO_BAND_AM_SW	0x0100	/* short wave (?) */
+#define	RADIO_BAND_AM_MW	0x0200	/* medium wave (540 - 1600) */
+#define	RADIO_BAND_AM_LW	0x0400	/* long wave (150 - 270) */
+#define	RADIO_BAND_FM_STD	0x1000	/* "standard" FM band (i.e.  88 - 108 or so) */
+
+
+/* Since floating-point stuff is illegal in the kernel, we use these
+ * pairs of macros to convert to, and from userland floats
+ * (I hope these are general enough!)
+ */
+/* Remember to make sure that all of these are integral... */
+/* Also remember to pass sensible things in here (MHz for FM, kHz for AM) */
+#define	RADIO_FM_RES		100	/* 0.01 MHZ */
+#define	RADIO_FM_FRTOINT(fl)	((int)(((float)(fl))*RADIO_FM_RES))
+#define	RADIO_FM_INTTOFR(fr)	((float)(((int)(fr))/RADIO_FM_RES))
+
+/* Old RadioTrack definitions
+#define RADIO_FM_FRTOINT(fl)	((int)(((float)(fl)-88.0)*40)+0xf6c)
+#define RADIO_FM_INTTOFR(fr)	((float)(((fr)-0xf6c)/40)+88.0)
+*/
+
+#define	RADIO_AM_RES		1	/* 1 kHz */
+#define	RADIO_AM_FRTOINT(fl)	((int)(((float)(fl))*RADIO_AM_RES))
+#define	RADIO_AM_INTTOFR(fr)	((float)(((int)(fr))/RADIO_AM_RES))
+
+
+/*
+ * Structures 
+ */
+/* query structures */
+struct radio_cap {
+	int dev_num;			/* device index */
+	int type;			/* device type (see above) */
+	int num_bwidths;		/* number of "bandwidths" supported */
+	int volmin, volmax;		/* min/max in steps of one */
+};
+
+struct radio_band {
+	int dev_num;			/* device index (IN) */
+	int index;			/* "bandwidth" index (IN) */
+	int proto;			/* protocol (AM, FM, SSB, etc) (OUT) */
+	int types;			/* see RADIO_BAND_* above */
+	int freqmin,freqmax;		/* encoded according to the macros above */
+	int strmin,strmax;		/* min/max signal strength (steps of 1) */
+};
+
+/* Previously, this was in four separate structures:
+ * radio_vol, radio_freq, radio_band and radio_sigstr,
+ * That was foolish, but now it's not so obvious what's going on.
+ * Be careful.
+ */
+
+struct radio_ctl {
+	int dev_num;			/* device index (IN) */
+	int value;			/* volume, frequency, band, sigstr */
+};
+
+
+/*
+ * ioctl numbers
+ */
+/* You have _how_ many radio devices? =) */
+#define	RADIO_NUMDEVS	_IOR(0x8c, 0x00, int)
+#define	RADIO_GETCAPS	_IOR(0x8c, 0x01, struct radio_cap)
+#define	RADIO_GETBNDCAP	_IOR(0x8c, 0x02, struct radio_band)
+
+#define	RADIO_SETVOL	_IOW(0x8c, 0x10, struct radio_ctl)
+#define	RADIO_GETVOL	_IOR(0x8c, 0x11, struct radio_ctl)
+#define	RADIO_SETBAND	_IOW(0x8c, 0x12, struct radio_ctl)
+#define	RADIO_GETBAND	_IOR(0x8c, 0x13, struct radio_ctl)
+#define	RADIO_SETFREQ	_IOW(0x8c, 0x14, struct radio_ctl)
+#define	RADIO_GETFREQ	_IOR(0x8c, 0x15, struct radio_ctl)
+
+#define	RADIO_GETSIGSTR	_IOR(0x8c, 0x30, struct radio_ctl)
+
+/* kernel specific stuff... */
+#ifdef __KERNEL__
+/* Try to keep the number of function pointers to a minimum.
+ * Devices are responsible for updating, or otherwise, the
+ * variables here, not the outside wrapper.
+ */
+struct radio_device;
+
+int radio_add_device(struct radio_device *newdev);
+
+struct radio_device {
+	struct radio_cap *cap;
+	struct radio_band *bands;	/* pointer to array of radio_bands */
+	int (*setvol)(struct radio_device*,int);
+	int curvol;
+	int (*setband)(struct radio_device*,int);
+	int curband;
+	int (*setfreq)(struct radio_device*,int);
+	int curfreq;
+	int (*getsigstr)(struct radio_device*);
+	struct radio_device *next;
+	void *misc;		/* device internal storage... (eg i/o addresses, etc */
+};
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_RADIO_H */