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70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Ian Lepore <ian@FreeBSD.org>
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _PWMBUS_H_
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#define _PWMBUS_H_
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struct pwmbus_softc {
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device_t dev;
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u_int nchannels;
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};
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struct pwmbus_ivars {
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u_int pi_channel;
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};
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enum {
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PWMBUS_IVAR_CHANNEL, /* Channel used by child dev */
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};
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#define PWMBUS_ACCESSOR(A, B, T) \
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static inline int \
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pwmbus_get_ ## A(device_t dev, T *t) \
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{ \
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return BUS_READ_IVAR(device_get_parent(dev), dev, \
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PWMBUS_IVAR_ ## B, (uintptr_t *) t); \
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} \
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static inline int \
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pwmbus_set_ ## A(device_t dev, T t) \
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{ \
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return BUS_WRITE_IVAR(device_get_parent(dev), dev, \
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PWMBUS_IVAR_ ## B, (uintptr_t) t); \
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}
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PWMBUS_ACCESSOR(channel, CHANNEL, u_int)
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#ifdef FDT
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#define PWMBUS_FDT_PNP_INFO(t) FDTCOMPAT_PNP_INFO(t, pwmbus)
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#else
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#define PWMBUS_FDT_PNP_INFO(t)
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#endif
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extern driver_t pwmbus_driver;
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extern driver_t ofw_pwmbus_driver;
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#endif /* _PWMBUS_H_ */
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