audio_dai_if.m

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#-
# Copyright (c) 2019 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
 
CODE {
        #include <sys/param.h>
        #include <sys/bus.h>
        #include <dev/sound/pcm/sound.h>
}
 
INTERFACE audio_dai;
 
# set DAI format for communications between CPU/codec nodes
METHOD int init {
        device_t        dev;
        uint32_t        format;
}
 
# Initialize DAI and set up interrrupt handler
METHOD int setup_intr {
        device_t        dev;
        driver_intr_t   intr_handler;
        void            *intr_arg;
}
 
# Setup mixers for codec node
METHOD int setup_mixer {
        device_t        dev;
        device_t        ausocdev;
}
 
# setup clock speed
METHOD int set_sysclk {
        device_t        dev;
        uint32_t        rate;
        int             dai_dir;
}
 
METHOD int trigger {
        device_t        dev;
        int             go;
        int             pcm_dir;
}
 
METHOD struct pcmchan_caps* get_caps {
        device_t        dev;
}
 
METHOD uint32_t get_ptr {
        device_t        dev;
        int             pcm_dir;
}
 
# Set PCM channel format
METHOD uint32_t set_chanformat {
        device_t        dev;
        uint32_t        format;
}
 
# Set PCM channel sampling rate
METHOD uint32_t set_chanspeed {
        device_t        dev;
        uint32_t        speed;
}
 
# call DAI interrupt handler
# returns 1 if call to chn_intr required, 0 otherwise
METHOD int intr {
        device_t        dev;
        struct snd_dbuf *play_buf;
        struct snd_dbuf *rec_buf;
}