53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/* $OpenBSD: pcf8584var.h,v 1.5 2007/10/20 18:46:21 kettenis Exp $ */
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/*
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* Copyright (c) 2006 David Gwynne <dlg@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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struct pcfiic_softc {
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struct device sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_space_handle_t sc_ioh2;
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int sc_master;
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u_int8_t sc_addr;
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u_int8_t sc_clock;
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u_int8_t sc_regmap[2];
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int sc_poll;
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struct i2c_controller sc_i2c;
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struct rwlock sc_lock;
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};
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/* clock divisor settings */
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#define PCF_CLOCK_3 0x00 /* 3 MHz */
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#define PCF_CLOCK_4_43 0x10 /* 4.43 MHz */
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#define PCF_CLOCK_6 0x14 /* 6 MHz */
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#define PCF_CLOCK_8 0x18 /* 8 MHz */
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#define PCF_CLOCK_12 0x1c /* 12 MHz */
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/* SCL frequency settings */
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#define PCF_FREQ_90 0x00 /* 90 kHz */
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#define PCF_FREQ_45 0x01 /* 45 kHz */
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#define PCF_FREQ_11 0x02 /* 11 kHz */
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#define PCF_FREQ_1_5 0x03 /* 1.5 kHz */
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void pcfiic_attach(struct pcfiic_softc *, i2c_addr_t, u_int8_t, int,
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void (*)(struct device *, struct i2cbus_attach_args *, void *),
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void *);
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int pcfiic_intr(void *);
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