pwmbus_if.m

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    1 #-
    2 # SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3 #
    4 # Copyright (c) 2018 Emmanuel Vadot <manu@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 # $FreeBSD$
   28 #
   29 
   30 #include <sys/bus.h>
   31 
   32 INTERFACE pwmbus;
   33 
   34 CODE {
   35         static int
   36         pwm_default_set_flags(device_t bus, u_int channel, uint32_t flags)
   37         {
   38 
   39                 return (EOPNOTSUPP);
   40         }
   41 
   42         static int
   43         pwm_default_get_flags(device_t bus, u_int channel, uint32_t *flags)
   44         {
   45 
   46                 *flags = 0;
   47                 return (0);
   48         }
   49 };
   50 
   51 #
   52 # Config the period (Total number of cycle in ns) and
   53 # the duty (active number of cycle in ns)
   54 #
   55 METHOD int channel_config {
   56         device_t bus;
   57         u_int channel;
   58         u_int period;
   59         u_int duty;
   60 };
   61 
   62 #
   63 # Get the period (Total number of cycle in ns) and
   64 # the duty (active number of cycle in ns)
   65 #
   66 METHOD int channel_get_config {
   67         device_t bus;
   68         u_int channel;
   69         u_int *period;
   70         u_int *duty;
   71 };
   72 
   73 #
   74 # Set the flags
   75 #
   76 METHOD int channel_set_flags {
   77         device_t bus;
   78         u_int channel;
   79         uint32_t flags;
   80 } DEFAULT pwm_default_set_flags;
   81 
   82 #
   83 # Get the flags
   84 #
   85 METHOD int channel_get_flags {
   86         device_t bus;
   87         u_int channel;
   88         uint32_t *flags;
   89 } DEFAULT pwm_default_get_flags;
   90 
   91 #
   92 # Enable the pwm output
   93 #
   94 METHOD int channel_enable {
   95         device_t bus;
   96         u_int channel;
   97         bool enable;
   98 };
   99 
  100 #
  101 # Is the pwm output enabled
  102 #
  103 METHOD int channel_is_enabled {
  104         device_t bus;
  105         u_int channel;
  106         bool *enabled;
  107 };
  108 
  109 #
  110 # Get the number of channels
  111 #
  112 METHOD int channel_count {
  113         device_t bus;
  114         u_int *nchannel;
  115 };

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FreeBSD/Linux Kernel Cross Reference sys/dev/pwm/pwmbus_if.m

FreeBSD/Linux Kernel Cross Reference
sys/dev/pwm/pwmbus_if.m