282 lines
9.5 KiB
C
282 lines
9.5 KiB
C
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/* $NetBSD: am9513reg.h,v 1.1 2001/04/10 12:50:17 fredette Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matthew Fredette.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _AM9513REG_H
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#define _AM9513REG_H
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/*
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* Driver support for the Am9513 timer chip. See
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* http://www.amd.com/products/cpg/techdocs/misc/03402/03402.html
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* for data sheets.
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*/
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struct am9513 {
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u_int16_t am9513_clk_data; /* data register */
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u_int16_t am9513_clk_cmd; /* command register */
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};
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#define AM9513_CLK_DATA 0
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#define AM9513_CLK_CMD 2
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/*
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* All of the below macros are for use in bitfields in the Counter
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* Mode (CM) Register.
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*/
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/* Gating control, CM[13:15]: */
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/*
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* Legend: A[HL][LE]?
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* | | `-> L = level, E = edge
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* | `-> H = high, L = low
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* `-> active
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*
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* P1 = plus one, M1 = minus one
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*/
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#define AM9513_CM_GATING_NONE (0x0 << 13)
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#define AM9513_CM_GATING_AH_TCN_M1 (0x1 << 13)
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#define AM9513_CM_GATING_AHL_GATEN_P1 (0x2 << 13)
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#define AM9513_CM_GATING_AHL_GATEN_M1 (0x3 << 13)
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#define AM9513_CM_GATING_AHL_GATEN (0x4 << 13)
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#define AM9513_CM_GATING_ALL_GATEN (0x5 << 13)
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#define AM9513_CM_GATING_AHE_GATEN (0x6 << 13)
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#define AM9513_CM_GATING_ALE_GATEN (0x7 << 13)
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/* Source edge, CM[12]: */
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#define AM9513_CM_SOURCE_EDGE_RISING (0 << 12)
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#define AM9513_CM_SOURCE_EDGE_FALLING (1 << 12)
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/* Count sources, CM[8:11]: */
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#define AM9513_CM_SOURCE_TCN1 (0x0 << 8)
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#define AM9513_CM_SOURCE_SRC1 (0x1 << 8)
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#define AM9513_CM_SOURCE_SRC2 (0x2 << 8)
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#define AM9513_CM_SOURCE_SRC3 (0x3 << 8)
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#define AM9513_CM_SOURCE_SRC4 (0x4 << 8)
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#define AM9513_CM_SOURCE_SRC5 (0x5 << 8)
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#define AM9513_CM_SOURCE_GATE1 (0x6 << 8)
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#define AM9513_CM_SOURCE_GATE2 (0x7 << 8)
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#define AM9513_CM_SOURCE_GATE3 (0x8 << 8)
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#define AM9513_CM_SOURCE_GATE4 (0x9 << 8)
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#define AM9513_CM_SOURCE_GATE5 (0xA << 8)
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#define AM9513_CM_SOURCE_F1 (0xB << 8)
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#define AM9513_CM_SOURCE_F2 (0xC << 8)
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#define AM9513_CM_SOURCE_F3 (0xD << 8)
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#define AM9513_CM_SOURCE_F4 (0xE << 8)
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#define AM9513_CM_SOURCE_F5 (0xF << 8)
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/* Count control, CM[7]: */
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#define AM9513_CM_SPECIAL_GATE_ENA (1 << 7)
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#define AM9513_CM_SPECIAL_GATE_DIS (0 << 7)
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/* Counter reload source, CM[6]: */
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#define AM9513_CM_RELOAD_SOURCE_LOAD (0 << 6)
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#define AM9513_CM_RELOAD_SOURCE_LOAD_OR_HOLD (1 << 6)
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/* Counter repeat control, CM[5]: */
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#define AM9513_CM_REPEAT_DIS (0 << 5)
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#define AM9513_CM_REPEAT_ENA (1 << 5)
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/* Counter type, CM[4]: */
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#define AM9513_CM_TYPE_BIN (0 << 4)
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#define AM9513_CM_TYPE_BCD (1 << 4)
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/* Counter direction, CM[3]: */
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#define AM9513_CM_DIR_DOWN (0 << 3)
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#define AM9513_CM_DIR_UP (1 << 3)
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/* Output control, CM[0:2]: */
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#define AM9513_CM_OUTPUT_OL (0x0 << 0) /* inactive, output low */
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#define AM9513_CM_OUTPUT_AHTCP (0x1 << 0) /* active high terminal count pulse */
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#define AM9513_CM_OUTPUT_TC_TOGGLED (0x2 << 0) /* TC toggled */
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#define AM9513_CM_OUTPUT_OHI (0x4 << 0) /* inactive, output high impedance */
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#define AM9513_CM_OUTPUT_ALTCP (0x5 << 0) /* active low terminal count pulse */
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/* The modes are various combinations of the above: */
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/* Mode A: */
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#define AM9513_CM_MODE_A (AM9513_CM_GATING_NONE \
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| AM9513_CM_SPECIAL_GATE_DIS \
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| AM9513_CM_RELOAD_SOURCE_LOAD \
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| AM9513_CM_REPEAT_DIS)
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/*
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* Mode B is just like mode A, except you OR in the
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* AM9513_CM_GATING_ value for the *level* you want:
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*/
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#define AM9513_CM_MODE_B AM9513_CM_MODE_A
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/*
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* Mode C is just like mode A, except you OR in the
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* AM9513_CM_GATING_ value for the *edge* you want:
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*/
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#define AM9513_CM_MODE_C AM9513_CM_MODE_A
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/* Mode D: */
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#define AM9513_CM_MODE_D (AM9513_CM_GATING_NONE \
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| AM9513_CM_SPECIAL_GATE_DIS \
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| AM9513_CM_RELOAD_SOURCE_LOAD \
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| AM9513_CM_REPEAT_ENA)
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/*
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* Mode E is just like mode D, except you OR in the
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* AM9513_CM_GATING_ value for the *level* you want:
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*/
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#define AM9513_CM_MODE_E AM9513_CM_MODE_D
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/*
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* Mode F is just like mode D, except you OR in the
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* AM9513_CM_GATING_ value for the *edge* you want:
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*/
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#define AM9513_CM_MODE_F AM9513_CM_MODE_D
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/* Mode G: */
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#define AM9513_CM_MODE_G (AM9513_CM_GATING_NONE \
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| AM9513_CM_SPECIAL_GATE_DIS \
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| AM9513_CM_RELOAD_SOURCE_LOAD_OR_HOLD \
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| AM9513_CM_REPEAT_DIS)
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/*
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* Mode H is just like mode G, except you OR in the
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* AM9513_CM_GATING_ value for the *level* you want:
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*/
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#define AM9513_CM_MODE_H AM9513_CM_MODE_G
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/*
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* Mode I is just like mode G, except you OR in the
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* AM9513_CM_GATING_ value for the *edge* you want:
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*/
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#define AM9513_CM_MODE_I AM9513_CM_MODE_G
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/* Mode J: */
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#define AM9513_CM_MODE_J (AM9513_CM_GATING_NONE \
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| AM9513_CM_SPECIAL_GATE_DIS \
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| AM9513_CM_RELOAD_SOURCE_LOAD_OR_HOLD \
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| AM9513_CM_REPEAT_ENA)
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/*
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* Mode K is just like mode J, except you OR in the
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* AM9513_CM_GATING_ value for the *level* you want:
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*/
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#define AM9513_CM_MODE_K AM9513_CM_MODE_J
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/*
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* Mode L is just like mode J, except you OR in the
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* AM9513_CM_GATING_ value for the *edge* you want:
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*/
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#define AM9513_CM_MODE_L AM9513_CM_MODE_J
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/* Mode N: */
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#define AM9513_CM_MODE_N (AM9513_CM_GATING_NONE \
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| AM9513_CM_SPECIAL_GATE_ENA \
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| AM9513_CM_RELOAD_SOURCE_LOAD \
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| AM9513_CM_REPEAT_DIS)
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/*
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* Mode O is just like mode N, except you OR in the
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* AM9513_CM_GATING_ value for the *edge* you want:
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*/
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#define AM9513_CM_MODE_O AM9513_CM_MODE_N
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/* Mode Q; OR in the AM9513_CM_GATING_ value for the *level* you want: */
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#define AM9513_CM_MODE_Q (AM9513_CM_GATING_NONE \
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| AM9513_CM_SPECIAL_GATE_ENA \
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| AM9513_CM_RELOAD_SOURCE_LOAD \
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| AM9513_CM_REPEAT_ENA)
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/*
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* Mode R is just like mode N, except you OR in the
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* AM9513_CM_GATING_ value for the *edge* you want:
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*/
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#define AM9513_CM_MODE_R AM9513_CM_MODE_Q
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/* Mode S: */
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#define AM9513_CM_MODE_S (AM9513_CM_GATING_NONE \
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| AM9513_CM_SPECIAL_GATE_ENA \
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| AM9513_CM_RELOAD_SOURCE_LOAD_OR_HOLD \
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| AM9513_CM_REPEAT_DIS)
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/* Mode V: */
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#define AM9513_CM_MODE_V (AM9513_CM_GATING_NONE \
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| AM9513_CM_SPECIAL_GATE_ENA \
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| AM9513_CM_RELOAD_SOURCE_LOAD_OR_HOLD \
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| AM9513_CM_REPEAT_ENA)
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/* Given an AM9513_CM_SOURCE_F? value, return the divisor: */
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#define AM9513_CM_SOURCE_Fn_DIV(func) (1 << (((func) - AM9513_CM_SOURCE_F1) >> 6))
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/*
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* Given a basic frequency and an AM9513_CM_SOURCE_F? value, returns
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* the number of clock ticks for a certain frequency:
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*/
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#define AM9513_TICKS(basic, func, hz) (((basic) / AM9513_CM_SOURCE_Fn_DIV(func)) / (hz))
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/* These are the timer numbers: */
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#define AM9513_TIMER1 (1)
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#define AM9513_TIMER2 (2)
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#define AM9513_TIMER3 (3)
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#define AM9513_TIMER4 (4)
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#define AM9513_TIMER5 (5)
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/*
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* This macro is used to compose a bitmask of times for those
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* commands that take a bitmask:
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*/
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#define AM9513_TIMER_BIT(timer) (1 << ((timer) - 1))
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/* When in 16-bit mode, the high 8 bits of every command must be ones: */
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#define _AM9513_CMD(x) (0xFF00 | (x))
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/* Commands: */
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#define AM9513_CMD_LOAD_MODE(timer) _AM9513_CMD(0x00 | (timer))
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#define AM9513_CMD_LOAD_LOAD(timer) _AM9513_CMD(0x08 | (timer))
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#define AM9513_CMD_LOAD_HOLD(timer) _AM9513_CMD(0x10 | (timer))
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#define AM9513_CMD_ARM(timers) _AM9513_CMD(0x20 | (timers))
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#define AM9513_CMD_LOAD(timers) _AM9513_CMD(0x40 | (timers))
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#define AM9513_CMD_LOAD_ARM(timers) _AM9513_CMD(0x60 | (timers))
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#define AM9513_CMD_SAVE(timers) _AM9513_CMD(0xA0 | (timers))
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#define AM9513_CMD_DISARM(timers) _AM9513_CMD(0xC0 | (timers))
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#define AM9513_CMD_CLEAR_OUTPUT(timer) _AM9513_CMD(0xE0 | (timer))
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#define AM9513_CMD_RESET _AM9513_CMD(0xFF)
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/* These are mode register values for various uses */
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#define AM9513_TICK_MODE (AM9513_F2+0x22) /* F2 + Operating mode D */
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#define AM9513_UART_MODE (AM9513_F1+0x22) /* F1 + Operating mode D */
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#define AM9513_FAST_LO_MODE (AM9513_F3+0x28) /* F3, repeat, count up */
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#define AM9513_FAST_HI_MODE (0x0028) /* TC of LO, repeat, count up */
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#endif /* _AM9513REG_H */
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