/* $NetBSD: wss_pnpbios.c,v 1.25 2021/10/06 23:58:49 uwe Exp $ */
/*
 * Copyright (c) 1999
 *      Matthias Drochner.  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 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wss_pnpbios.c,v 1.25 2021/10/06 23:58:49 uwe Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/proc.h>

#include <sys/bus.h>

#include <sys/audioio.h>
#include <dev/audio/audio_if.h>

#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>

#include <i386/pnpbios/pnpbiosvar.h>

#include <dev/isa/ad1848var.h>
#include <dev/isa/wssreg.h>
#include <dev/isa/wssvar.h>

int wss_pnpbios_match(device_t, cfdata_t, void *);
void wss_pnpbios_attach(device_t, device_t, void *);
int wss_pnpbios_hints_index(const char *);


CFATTACH_DECL_NEW(wss_pnpbios, sizeof(struct wss_softc),
    wss_pnpbios_match, wss_pnpbios_attach, NULL, NULL);

struct wss_pnpbios_hint {
        char idstr[8];
        int io_region_idx_ad1848;       /* which region index is the DAC?  */
        int io_region_idx_opl;          /* which region index is the OPL?  */
        int offset_ad1848;              /* offset from start of DAC region */
};

struct wss_pnpbios_hint wss_pnpbios_hints[] = {
        { "NMX2210", 1, 2, WSS_CODEC },
        { "CSC0000", 0, 1, 0 },         /* Dell Latitude CPi */
        { "CSC0100", 0, 1, 0 },         /* CS4610 with CS4236 codec */
        { { 0 }, 0, 0, 0 }
};


int
wss_pnpbios_hints_index(const char *idstr)
{
        int idx = 0;

        while (wss_pnpbios_hints[idx].idstr[0] != 0) {
                if (!strcmp(wss_pnpbios_hints[idx].idstr, idstr))
                        return idx;
                ++idx;
        }

        return -1;
}

int
wss_pnpbios_match(device_t parent, cfdata_t match, void *aux)
{
        struct pnpbiosdev_attach_args *aa = aux;

        if (wss_pnpbios_hints_index(aa->idstr) == -1)
                return 0;

        return 2; /* beat sb */
}

void
wss_pnpbios_attach(device_t parent, device_t self, void *aux)
{
        struct wss_softc *sc = device_private(self);
        struct pnpbiosdev_attach_args *aa = aux;
        struct audio_attach_args arg;
        struct wss_pnpbios_hint *wph;

#if 0
        static u_char interrupt_bits[12] = {
                -1, -1, -1, -1, -1, -1, -1, 0x08, -1, 0x10, 0x18, 0x20
        };
        static u_char dma_bits[4] = {1, 2, 0, 3};
#endif

        aprint_naive("\n");
        wph = &wss_pnpbios_hints[wss_pnpbios_hints_index(aa->idstr)];

        if (pnpbios_io_map(aa->pbt, aa->resc, wph->io_region_idx_ad1848,
                           &sc->sc_iot, &sc->sc_ioh)) {
                aprint_error(": can't map i/o space\n");
                return;
        }
        if (pnpbios_io_map(aa->pbt, aa->resc, wph->io_region_idx_opl,
                           &sc->sc_iot, &sc->sc_opl_ioh)) {
                aprint_error(": can't map i/o space\n");
                return;
        }

        sc->sc_ad1848.sc_ad1848.sc_dev = self;
        sc->wss_ic = aa->ic;

        if (pnpbios_getirqnum(aa->pbt, aa->resc, 0, &sc->wss_irq, NULL)) {
                aprint_error(": can't get IRQ\n");
                return;
        }

        if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &sc->wss_playdrq)) {
                aprint_error(": can't get DMA channel\n");
                return;
        }
        if (pnpbios_getdmachan(aa->pbt, aa->resc, 1, &sc->wss_recdrq)) {
                aprint_error(": can't get recording DMA channel");
                sc->wss_recdrq = sc->wss_playdrq;
        }

        sc->sc_ad1848.sc_ad1848.sc_iot = sc->sc_iot;
        bus_space_subregion(sc->sc_iot, sc->sc_ioh, wph->offset_ad1848, 4,
                            &sc->sc_ad1848.sc_ad1848.sc_ioh);

        aprint_normal("\n");
        pnpbios_print_devres(self, aa);

        aprint_naive("%s", device_xname(self));
        aprint_normal("%s", device_xname(self));

        if (!ad1848_isa_probe(&sc->sc_ad1848)) {
                aprint_error_dev(self, "ad1848 probe failed\n");
                return;
        }

        wssattach(sc);
#if 0
        /* XXX recdrq */
        bus_space_write_1(sc->sc_iot, sc->sc_ioh, WSS_CONFIG,
            (interrupt_bits[sc->wss_irq] | dma_bits[sc->wss_playdrq]));
#endif
        arg.type = AUDIODEV_TYPE_OPL;
        arg.hwif = 0;
        arg.hdl = 0;
        config_found(self, &arg, audioprint, CFARGS(.iattr = "wss"));
}