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+/*-
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Tyler C. Sarna.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _VIA_H
+#define _VIA_H
+
+/*
+ * VIA Technologies VT82C686A Southbridge Audio Driver
+ *
+ * Documentation links:
+ *
+ * ftp://ftp.alsa-project.org/pub/manuals/via/686a.pdf
+ * ftp://ftp.alsa-project.org/pub/manuals/general/ac97r21.pdf
+ * ftp://ftp.alsa-project.org/pub/manuals/ad/AD1881_0.pdf (example AC'97 codec)
+ */
+
+#define VIA_AC97STATUS 0x40
+#define VIA_AC97STATUS_RDY 0x01
+#define VIA_AC97STATUS_LOWPWR 0x02
+#define VIA_AC97STATUS_2RDY 0x04
+
+#define VIA_ACLINKCTRL 0x41
+#define VIA_ACLINK_EN 0x80 /* ac link enab */
+#define VIA_ACLINK_NRST 0x40 /* ~(ac reset) */
+#define VIA_ACLINK_SYNC 0x20 /* ac sync */
+#define VIA_ACLINK_VSR 0x08 /* var. samp. rate */
+#define VIA_ACLINK_SGD 0x04 /* SGD enab */
+#define VIA_ACLINK_FM 0x02 /* FM enab */
+#define VIA_ACLINK_SB 0x01 /* SB enab */
+#define VIA_ACLINK_DESIRED (VIA_ACLINK_EN|VIA_ACLINK_NRST|VIA_ACLINK_VSR|VIA_ACLINK_SGD)
+#define VIA_PCICONF_FUNC_EN 0x42
+
+#define VIA_PLAY_STAT 0x00
+#define VIA_RECORD_STAT 0x10
+#define VIA_RPSTAT_INTR 0x03
+#define VIA_PLAY_CONTROL 0x01
+#define VIA_RECORD_CONTROL 0x11
+#define VIA_RPCTRL_START 0x80
+#define VIA_RPCTRL_TERMINATE 0x40
+#define VIA_PLAY_MODE 0x02
+#define VIA_RECORD_MODE 0x12
+#define VIA_RPMODE_INTR_FLAG 0x01
+#define VIA_RPMODE_INTR_EOL 0x02
+#define VIA_RPMODE_STEREO 0x10
+#define VIA_RPMODE_16BIT 0x20
+#define VIA_RPMODE_AUTOSTART 0x80
+#define VIA_PLAY_DMAOPS_BASE 0x04
+#define VIA_RECORD_DMAOPS_BASE 0x14
+#define VIA_PLAY_DMAOPS_COUNT 0x0C
+#define VIA_RECORD_DMAOPS_COUNT 0x1C
+
+#define VIA_CODEC_CTL 0x80
+#define VIA_CODEC_READ 0x00800000
+#define VIA_CODEC_BUSY 0x01000000
+#define VIA_CODEC_PRIVALID 0x02000000
+#define VIA_CODEC_INDEX(x) ((x)<<16)
+
+#endif /* _VIA_H */
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