1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2019 Ian Lepore <ian@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _PWMBUS_H_ 29 #define _PWMBUS_H_ 30 31 struct pwmbus_softc { 32 device_t dev; 33 u_int nchannels; 34 }; 35 36 struct pwmbus_ivars { 37 u_int pi_channel; 38 }; 39 40 enum { 41 PWMBUS_IVAR_CHANNEL, /* Channel used by child dev */ 42 }; 43 44 #define PWMBUS_ACCESSOR(A, B, T) \ 45 static inline int \ 46 pwmbus_get_ ## A(device_t dev, T *t) \ 47 { \ 48 return BUS_READ_IVAR(device_get_parent(dev), dev, \ 49 PWMBUS_IVAR_ ## B, (uintptr_t *) t); \ 50 } \ 51 static inline int \ 52 pwmbus_set_ ## A(device_t dev, T t) \ 53 { \ 54 return BUS_WRITE_IVAR(device_get_parent(dev), dev, \ 55 PWMBUS_IVAR_ ## B, (uintptr_t) t); \ 56 } 57 58 PWMBUS_ACCESSOR(channel, CHANNEL, u_int) 59 60 #ifdef FDT 61 #define PWMBUS_FDT_PNP_INFO(t) FDTCOMPAT_PNP_INFO(t, pwmbus) 62 #else 63 #define PWMBUS_FDT_PNP_INFO(t) 64 #endif 65 66 extern driver_t pwmbus_driver; 67 extern driver_t ofw_pwmbus_driver; 68 69 #endif /* _PWMBUS_H_ */ 70