Chip specific parts for FM-radio drivers.

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

4 files changed, 457 insertions, 0 deletions

diff --git a/sys/dev/ic/lm700x.c b/sys/dev/ic/lm700x.c
new file mode 100644
index 00000000000..45a09182f2a
--- /dev/null
+++ b/sys/dev/ic/lm700x.c
@@ -0,0 +1,126 @@
+/*	$OpenBSD: lm700x.c,v 1.1 2001/10/04 19:46:46 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.
+ */
+
+/* Implementation of most common lm700x routines */
+
+#include <sys/param.h>
+#include <sys/radioio.h>
+
+#include <dev/ic/lm700x.h>
+
+u_long
+lm700x_encode_freq(u_long nfreq, u_long rf)
+{
+	u_char ref_freq;
+
+	switch (rf) {
+	case LM700X_REF_100:
+		ref_freq = 100;
+		break;
+	case LM700X_REF_025:
+		ref_freq = 25;
+		break;
+	case LM700X_REF_050:
+		/* FALLTHROUGH */
+	default:
+		ref_freq = 50;
+		break;
+	}
+
+	nfreq += IF_FREQ;
+	nfreq /= ref_freq;
+
+	return nfreq;
+}
+
+void
+lm700x_hardware_write(struct lm700x_t *lm, u_long data, u_long addon)
+{
+	int i;
+
+	lm->init(lm->iot, lm->ioh, lm->offset, lm->rsetdata | addon);
+
+	for (i = 0; i < LM700X_REGISTER_LENGTH; i++)
+		if (data & (1 << i)) {
+			bus_space_write_1(lm->iot, lm->ioh, lm->offset,
+					lm->wocl | addon);
+			DELAY(LM700X_WRITE_DELAY);
+			bus_space_write_1(lm->iot, lm->ioh, lm->offset,
+					lm->woch | addon);
+			DELAY(LM700X_WRITE_DELAY);
+			bus_space_write_1(lm->iot, lm->ioh, lm->offset,
+					lm->wocl | addon);
+		} else {
+			bus_space_write_1(lm->iot, lm->ioh, lm->offset,
+					lm->wzcl | addon);
+			DELAY(LM700X_WRITE_DELAY);
+			bus_space_write_1(lm->iot, lm->ioh, lm->offset,
+					lm->wzch | addon);
+			DELAY(LM700X_WRITE_DELAY);
+			bus_space_write_1(lm->iot, lm->ioh, lm->offset,
+					lm->wzcl | addon);
+		}
+
+	lm->rset(lm->iot, lm->ioh, lm->offset, lm->rsetdata | addon);
+}
+
+u_long
+lm700x_encode_ref(u_char rf)
+{
+	u_long ret;
+
+	if (rf < 36)
+		ret = LM700X_REF_025;
+	else if (rf > 35 && rf < 75)
+			ret = LM700X_REF_050;
+	else
+		ret = LM700X_REF_100;
+
+	return ret;
+}
+
+u_char
+lm700x_decode_ref(u_long rf)
+{
+	u_char ret;
+
+	switch (rf) {
+	case LM700X_REF_100:
+		ret = 100;
+		break;
+	case LM700X_REF_025:
+		ret = 25;
+		break;
+	case LM700X_REF_050:
+		/* FALLTHROUGH */
+	default:
+		ret = 50;
+		break;
+	}
+
+	return ret;
+}
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_ */
diff --git a/sys/dev/ic/tea5757.c b/sys/dev/ic/tea5757.c
new file mode 100644
index 00000000000..cb9aae00a0d
--- /dev/null
+++ b/sys/dev/ic/tea5757.c
@@ -0,0 +1,164 @@
+/*	$OpenBSD: tea5757.c,v 1.1 2001/10/04 19:46:46 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.
+ */
+
+/* Implementation of most common TEA5757 routines */
+
+#include <sys/param.h>
+#include <sys/radioio.h>
+
+#include <dev/ic/tea5757.h>
+
+/*
+ * Convert frequency to hardware representation
+ */
+u_long
+tea5757_encode_freq(u_long freq)
+{
+#ifdef RADIO_TEA5759
+	freq -= IF_FREQ;
+#else
+	freq += IF_FREQ;
+#endif /* RADIO_TEA5759 */
+	/*
+	 * NO FLOATING POINT!
+	 */
+	freq *= 10;
+	freq /= 125;
+	return freq & TEA5757_FREQ;
+}
+
+/*
+ * Convert frequency from hardware representation
+ */
+u_long
+tea5757_decode_freq(u_long freq)
+{
+	freq &= TEA5757_FREQ;
+	freq *= 125; /* 12.5 kHz */
+	freq /= 10;
+#ifdef RADIO_TEA5759
+	freq += IF_FREQ;
+#else
+	freq -= IF_FREQ;
+#endif /* RADIO_TEA5759 */
+	return freq;
+}
+
+/*
+ * Hardware search
+ */
+void
+tea5757_search(struct tea5757_t *tea, u_long stereo, u_long lock, int dir)
+{
+	u_long reg;
+	u_int co = 0;
+
+	reg = stereo | lock | TEA5757_SEARCH_START;
+	reg |= dir ? TEA5757_SEARCH_UP : TEA5757_SEARCH_DOWN;
+	tea5757_hardware_write(tea, reg);
+
+	DELAY(TEA5757_ACQUISITION_DELAY);
+
+	do {
+		DELAY(TEA5757_WAIT_DELAY);
+		reg = tea->read(tea->iot, tea->ioh, tea->offset);
+	} while ((reg & TEA5757_FREQ) == 0 && ++co < 200);
+}
+
+void
+tea5757_hardware_write(struct tea5757_t *tea, u_long data)
+{
+	int i = TEA5757_REGISTER_LENGTH;
+
+	tea->init(tea->iot, tea->ioh, tea->offset, 0);
+
+	while (i--)
+		if (data & (1 << i))
+			tea->write_bit(tea->iot, tea->ioh, tea->offset, 1);
+		else
+			tea->write_bit(tea->iot, tea->ioh, tea->offset, 0);
+
+	tea->rset(tea->iot, tea->ioh, tea->offset, 0);
+}
+
+u_long
+tea5757_set_freq(struct tea5757_t *tea, u_long stereo, u_long lock, u_long freq)
+{
+	u_long data = 0ul;
+
+	if (freq < MIN_FM_FREQ)
+		freq = MIN_FM_FREQ;
+	if (freq > MAX_FM_FREQ)
+		freq = MAX_FM_FREQ;
+
+	data = tea5757_encode_freq(freq) | stereo | lock | TEA5757_SEARCH_END;
+	tea5757_hardware_write(tea, data);
+
+	return freq;
+}
+
+u_long
+tea5757_encode_lock(u_char lock)
+{
+	u_long ret;
+
+	if (lock < 8)
+		ret = TEA5757_S005;
+	else if (lock > 7 && lock < 15)
+		ret = TEA5757_S010;
+	else if (lock > 14 && lock < 51)
+		ret = TEA5757_S030;
+	else if (lock > 50)
+		ret = TEA5757_S150;
+
+	return ret;
+}
+
+u_char
+tea5757_decode_lock(u_long lock)
+{
+	u_char ret;
+
+	switch (lock) {
+	case TEA5757_S005:
+		ret = 5;
+		break;
+	case TEA5757_S010:
+		ret = 10;
+		break;
+	case TEA5757_S030:
+		ret = 30;
+		break;
+	case TEA5757_S150:
+		/* FALLTHROUGH */
+	default:
+		ret = 150;
+		break;
+	}
+
+	return ret;
+}
diff --git a/sys/dev/ic/tea5757.h b/sys/dev/ic/tea5757.h
new file mode 100644
index 00000000000..a9aca55dcf2
--- /dev/null
+++ b/sys/dev/ic/tea5757.h
@@ -0,0 +1,88 @@
+/*	$OpenBSD: tea5757.h,v 1.1 2001/10/04 19:46:46 gluk Exp $	*/
+/* $RuOBSD: tea5757.h,v 1.5 2001/10/04 18:51:50 pva Exp $ */
+
+/*
+ * Copyright (c) 2001 Vladimir Popov <jumbo@narod.ru>
+ *
+ * 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 _TEA5757_H_
+#define _TEA5757_H_
+
+#include <sys/types.h>
+
+#include <machine/bus.h>
+
+#define TEA5757_REGISTER_LENGTH		25
+#define TEA5757_FREQ			0x0007FFF
+#define TEA5757_DATA			0x1FF8000
+
+#define TEA5757_SEARCH_START		(1 << 24) /* 0x1000000 */
+#define TEA5757_SEARCH_END		(0 << 24) /* 0x0000000 */
+
+#define TEA5757_SEARCH_UP		(1 << 23) /* 0x0800000 */
+#define TEA5757_SEARCH_DOWN		(0 << 23) /* 0x0000000 */
+#define TEA5757_ACQUISITION_DELAY	100000
+#define TEA5757_WAIT_DELAY		1000
+#define TEA5757_SEARCH_DELAY		14	  /* 14 microseconds */
+
+#define TEA5757_STEREO			(0 << 22) /* 0x0000000 */
+#define TEA5757_MONO			(1 << 22) /* 0x0400000 */
+
+#define TEA5757_BAND_FM			(0 << 20)
+#define TEA5757_BAND_MW			(1 << 20)
+#define TEA5757_BAND_LW			(2 << 20)
+#define TEA5757_BAND_SW			(3 << 20)
+
+#define TEA5757_USER_PORT		(0 << 18)
+#define TEA5757_DUMMY			(0 << 15)
+
+#define TEA5757_S005			(0 << 16) /* 0x0000000 * > 5 mkV */
+#define TEA5757_S010			(2 << 16) /* 0x0020000 * > 10 mkV */
+#define TEA5757_S030			(1 << 16) /* 0x0010000 * > 30 mkV */
+#define TEA5757_S150			(3 << 16) /* 0x0030000 * > 150 mkV */
+
+struct tea5757_t {
+	bus_space_tag_t	iot;
+	bus_space_handle_t	ioh;
+	bus_size_t	offset;
+
+	void	(*init)(bus_space_tag_t, bus_space_handle_t, bus_size_t,
+			u_long); /* init value */
+	void	(*rset)(bus_space_tag_t, bus_space_handle_t, bus_size_t,
+			u_long); /* reset value */
+	void	(*write_bit)(bus_space_tag_t, bus_space_handle_t, bus_size_t,
+			u_char); /* the bit */
+	u_long	(*read)(bus_space_tag_t, bus_space_handle_t, bus_size_t);
+};
+
+u_long	tea5757_encode_freq(u_long);
+u_long	tea5757_decode_freq(u_long);
+u_long	tea5757_encode_lock(u_char);
+u_char	tea5757_decode_lock(u_long);
+
+u_long	tea5757_set_freq(struct tea5757_t *, u_long, u_long, u_long);
+void	tea5757_search(struct tea5757_t *, u_long, u_long, int);
+
+void	tea5757_hardware_write(struct tea5757_t *, u_long);
+
+#endif /* _TEA5757_H_ */