diff options
author | Alexander Yurchenko <grange@cvs.openbsd.org> | 2006-01-22 17:42:56 +0000 |
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committer | Alexander Yurchenko <grange@cvs.openbsd.org> | 2006-01-22 17:42:56 +0000 |
commit | 7a7dc30f45c1d269199fdc9e9daddc31a061a2f1 (patch) | |
tree | 77cb311ab026972bb503653097388e8ca11e6cb3 /sys | |
parent | ce697746ad677099af3572d40404bd199d5cb491 (diff) |
Nothing uses this file anymore.
ok miod@
Diffstat (limited to 'sys')
-rw-r--r-- | sys/dev/ic/ds.h | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/sys/dev/ic/ds.h b/sys/dev/ic/ds.h deleted file mode 100644 index c1e01367261..00000000000 --- a/sys/dev/ic/ds.h +++ /dev/null @@ -1,125 +0,0 @@ -/* $OpenBSD: ds.h,v 1.2 2002/03/14 01:26:54 millert Exp $ */ -/* $NetBSD: ds.h,v 1.1 1997/07/06 22:22:01 is Exp $ */ - -/*- - * Copyright (c) 1997 Ignatios Souvatzis. 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. - * 3. Neither the name of the author nor the names of contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. - */ - -/* - * Definitions for access to Dallas Semiconductor chips which attach to - * the same 1-wire bus as the DS2404 RTC. - */ - -#ifndef DALLAS_SEMI_CHIPS_H -#define DALLAS_SEMI_CHIPS_H - -/* Family codes (low byte of the ROM) */ - -#define DS_FAMILY_2404 0x04 /* DS2404 Econoram Time Chip */ - -/* - * ROM access codes. These are only available from the 1-wire bus, and one - * of them MUST be used before a memory access code is called. If you want - * to detect which devices are on the bus, you have to issue the ROM search - * function (see data sheet). - * If only one device is on the BUS, and you don't want any ROM function, - * issue the SKIP function. - * READ ROM works only if only one device is on the bus. - */ - -#define DS_ROM_MATCH 0x55 /* 55 8-bytes-of-ROM-to-select */ -#define DS_ROM_SEARCH 0xf0 /* see data sheet */ -#define DS_ROM_SKIP 0xCC /* don't do ROM function */ -#define DS_ROM_READ 0x33 /* 33 -> 8 bytes of ROM */ - -/* - * Memory access codes. These are available from the 1- or 3-wire bus, and - * but you must use one of the ROM access codes first, if using the 1-wire - * bus. - * - * You can read from any starting address up to the end of the chip, or - * abort the read with a reset pulse. - * You first write 2-32 bytes beginning some address to the scratchpad. - * Starting address and final byte stream length are remembered by the - * chip. After reading data and address/length back from the scratchpad, - * and verifying the information, you can issue the copy scratchpad command - * to copy the written parts of the scratchpad to the corresponding parts - * of the implied (in the address) memory page. - */ - -#define DS_MEM_WRITE_SCRATCH 0x0f /* 0F low-ads high-ads data ... */ -#define DS_MEM_READ_SCRATCH 0xaa /* AA -> low-ads high-ads end-ofs - * data ... */ -#define DS_MEM_COPY_SCRATCH 0x55 /* 55 low-ads high-ads end-ofs */ -#define DS_MEM_READ_MEMORY 0xf0 /* F0 low-ads high-ads -> data ...*/ - -/* - * Hardware handle for access functions - */ - -struct ds_handle { - int (*ds_read_bit)(void *); - void (*ds_write_bit)(void *, int); - void (*ds_reset)(void *); - void *ds_hw_handle; -}; - -/* - * Functions for access to Dallas Semiconductor chips which attach to - * the same 1-wire bus as the DS2404 RTC. - */ - -static __inline u_int8_t ds_read_byte(struct ds_handle *); -static __inline void ds_write_byte(struct ds_handle *, unsigned int); - -static __inline u_int8_t -ds_read_byte(dsh) - struct ds_handle *dsh; -{ - u_int8_t buf; - int i; - - for (i = buf = 0; i < 8; ++i) - buf |= (dsh->ds_read_bit)(dsh->ds_hw_handle) << i; - - return buf; -} - -static __inline void -ds_write_byte(dsh, b) - struct ds_handle *dsh; - unsigned int b; -{ - int i; - - for (i = 0; i < 8; ++i) { - (dsh->ds_write_bit)(dsh->ds_hw_handle, b & 1); - b >>= 1; - } -} - -#endif /* DALLAS_SEMI_CHIPS_H */ |