601e178380
iic_acquire_bus() / iic_release_bus(). "acquire" and "release" hooks no longer need to be provided by back-end controller drivers (only if they need special handling, e.g. powering on the i2c controller). This results in the removal of a bunch of rendundant code from each back-end controller driver. Assert that we are not in hard interrupt context in iic_acquire_bus(), iic_exec(), and iic_release_bus().
38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
/* $NetBSD: pcf8584var.h,v 1.6 2019/12/22 23:23:32 thorpej Exp $ */
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/* $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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device_t 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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};
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void pcfiic_attach(struct pcfiic_softc *, i2c_addr_t, u_int8_t, int);
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int pcfiic_intr(void *);
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