/*      $OpenBSD: cs4231var.h,v 1.9 2006/06/02 20:00:56 miod Exp $      */

/*
 * Copyright (c) 1999 Jason L. Wright (jason@thought.net)
 * All rights reserved.
 *
 * 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 ``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 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.
 *
 * Effort sponsored in part by the Defense Advanced Research Projects
 * Agency (DARPA) and Air Force Research Laboratory, Air Force
 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
 *
 */

/*
 * Driver for CS4231 based audio found in some sun4m systems
 */

/*
 * List of device memory allocations (see cs4231_malloc/cs4231_free).
 */
struct cs_dma {
        struct cs_dma *         next;
        caddr_t                 addr;
        bus_dmamap_t            dmamap;
        bus_dma_segment_t       segs[1];
        int                     nsegs;
        size_t                  size;
};

struct cs_volume {
        u_int8_t        left;
        u_int8_t        right;
};

struct cs_channel {
        void            (*cs_intr)(void *);     /* interrupt handler */
        void            *cs_arg;                /* interrupt arg */
        struct cs_dma   *cs_curdma;             /* current dma block */
        u_int32_t       cs_cnt;                 /* current block count */
        u_int32_t       cs_blksz;               /* current block size */
        u_int32_t       cs_segsz;               /* current segment size */
        int             cs_locked;              /* channel locked? */
};

struct cs4231_softc {
        struct  device sc_dev;          /* base device */
        struct  intrhand sc_ih;         /* interrupt vectoring */
        bus_dma_tag_t sc_dmatag;
        bus_space_tag_t sc_bustag;      /* CS4231/APC register tag */
        bus_space_handle_t sc_regs;     /* CS4231/APC register handle */
        int     sc_burst;               /* XXX: DMA burst size in effect */
        int     sc_open;                /* already open? */

        struct cs_channel sc_playback, sc_capture;

        char            sc_mute[9];     /* which devs are muted */
        u_int8_t        sc_out_port;    /* output port */
        u_int8_t        sc_in_port;     /* input port */
        struct  cs_volume sc_volume[9]; /* software volume */
        struct  cs_volume sc_adc;       /* adc volume */

        int sc_format_bits;
        int sc_speed_bits;
        int sc_precision;
        int sc_need_commit;
        int sc_channels;
        struct cs_dma   *sc_dmas;       /* dma list */
};