Chip specific parts for FM-radio drivers.

Work by Vladimir Popov <jumbo@narod.ru> and Maxim Tsyplakov <tm@oganer.net>

1 files changed, 79 insertions, 0 deletions

diff --git a/sys/dev/ic/lm700x.h b/sys/dev/ic/lm700x.h
new file mode 100644
index 00000000000..4afab020242
--- /dev/null
+++ b/sys/dev/ic/lm700x.h
@@ -0,0 +1,79 @@
+/*	$OpenBSD: lm700x.h,v 1.1 2001/10/04 19:46:46 gluk Exp $	*/
+/* $RuOBSD: lm700x.h,v 1.3 2001/10/04 19:25:39 gluk Exp $ */
+
+/*
+ * Copyright (c) 2001 Vladimir Popov <jumbo@narod.ru>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LM700X_H_
+#define _LM700X_H_
+
+#include <sys/types.h>
+
+#include <machine/bus.h>
+
+#define LM700X_REGISTER_LENGTH	24
+
+#define LM700X_DATA_MASK	0xFFC000
+#define LM700X_FREQ_MASK	0x003FFF
+
+#define LM700X_FREQ(x)		(x << 0)	/* 0x003FFF */
+#define LM700X_LSI(x)		(x << 14)	/* 0x00C000 */ /* always zero */
+#define LM700X_BAND(x)		(x << 16)	/* 0x070000 */
+#define		LM700X_STEREO	LM700X_BAND(3)
+#define		LM700X_MONO	LM700X_BAND(1)
+#define LM700X_TIME_BASE(x)	(x << 19)	/* 0x080000 */ /* always zero */
+#define LM700X_REF_FREQ(x)	(x << 20)	/* 0x700000 */
+#define		LM700X_REF_100	LM700X_REF_FREQ(0)
+#define		LM700X_REF_025	LM700X_REF_FREQ(2)
+#define		LM700X_REF_050	LM700X_REF_FREQ(4)
+/* The rest is for an AM band */
+
+#define LM700X_DIVIDER_AM	(0 << 23)	/* 0x000000 */
+#define LM700X_DIVIDER_FM	(1 << 23)	/* 0x800000 */
+
+#define LM700X_WRITE_DELAY	6		/* 6 microseconds */
+
+struct lm700x_t {
+	bus_space_tag_t	iot;
+	bus_space_handle_t	ioh;
+	bus_size_t	offset;
+
+	u_long	wzcl;	/* write zero clock low */
+	u_long	wzch;	/* write zero clock high */
+	u_long	wocl;	/* write one clock low */
+	u_long	woch;	/* write one clock high */
+	u_long	initdata;
+	u_long	rsetdata;
+
+	void (*init)(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_long);
+	void (*rset)(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_long);
+};
+
+u_long	lm700x_encode_freq(u_long, u_long);
+u_long	lm700x_encode_ref(u_char);
+u_char	lm700x_decode_ref(u_long);
+void	lm700x_hardware_write(struct lm700x_t *, u_long, u_long);
+
+#endif /* _LM700X_H_ */