/* $NetBSD: wss_acpi.c,v 1.38 2021/10/07 00:11:08 uwe Exp $ */

/*
* Copyright (c) 2002 Jared D. McNeill <[email protected]>
* 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. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wss_acpi.c,v 1.38 2021/10/07 00:11:08 uwe Exp $");

#include <sys/param.h>
#include <sys/audioio.h>
#include <sys/device.h>
#include <sys/systm.h>

#include <dev/audio/audio_if.h>

#include <dev/acpi/acpivar.h>

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

static int      wss_acpi_match(device_t, cfdata_t, void *);
static void     wss_acpi_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(wss_acpi, sizeof(struct wss_softc), wss_acpi_match,
   wss_acpi_attach, NULL, NULL);

/*
* Supported device IDs
*/

struct wss_acpi_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 */
};

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

static int wss_acpi_hints_index (const char *);

static int
wss_acpi_hints_index(const char *idstr)
{
       int idx;

       if (idstr == NULL)
               return -1;
       for (idx = 0; idx < __arraycount(wss_acpi_hints); idx++) {
               if (!strcmp(wss_acpi_hints[idx].idstr, idstr))
                       return idx;
       }

       return -1;
}

/*
* wss_acpi_match: autoconf(9) match routine
*/
static int
wss_acpi_match(device_t parent, cfdata_t match, void *aux)
{
       struct acpi_attach_args *aa = aux;

       if ((aa->aa_node->ad_devinfo->Valid & ACPI_VALID_HID) == 0)
               return 0;

       if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE ||
           wss_acpi_hints_index(aa->aa_node->ad_devinfo->HardwareId.String) == -1)
               return 0;

       return 1;
}

/*
* wss_acpi_attach: autoconf(9) attach routine
*/
static void
wss_acpi_attach(device_t parent, device_t self, void *aux)
{
       struct wss_softc *sc = device_private(self);
       struct acpi_attach_args *aa = aux;
       struct acpi_resources res;
       struct acpi_io *dspio, *oplio;
       struct acpi_irq *irq;
       struct acpi_drq *playdrq, *recdrq;
       struct audio_attach_args arg;
       ACPI_STATUS rv;
       const struct wss_acpi_hint *wah;

       sc->sc_ad1848.sc_ad1848.sc_dev = self;
       wah = &wss_acpi_hints[
           wss_acpi_hints_index(aa->aa_node->ad_devinfo->HardwareId.String)];

       /* Parse our resources */
       rv = acpi_resource_parse(self,
           aa->aa_node->ad_handle, "_CRS", &res,
           &acpi_resource_parse_ops_default);
       if (ACPI_FAILURE(rv))
               return;

       /* Find and map our i/o registers */
       sc->sc_iot = aa->aa_iot;
       dspio = acpi_res_io(&res, wah->io_region_idx_ad1848);
       oplio = acpi_res_io(&res, wah->io_region_idx_opl);
       if (dspio == NULL || oplio == NULL) {
               aprint_error_dev(self,
                   "unable to find i/o registers resource\n");
               goto out;
       }
       if (bus_space_map(sc->sc_iot, dspio->ar_base, dspio->ar_length,
           0, &sc->sc_ioh) != 0) {
               aprint_error_dev(self, "unable to map i/o registers\n");
               goto out;
       }
       if (bus_space_map(sc->sc_iot, oplio->ar_base, oplio->ar_length,
           0, &sc->sc_opl_ioh) != 0) {
               aprint_error_dev(self, "unable to map opl i/o registers\n");
               goto out;
       }

       sc->wss_ic = aa->aa_ic;

       /* Find our IRQ */
       irq = acpi_res_irq(&res, 0);
       if (irq == NULL) {
               aprint_error_dev(self, "unable to find irq resource\n");
               /* XXX bus_space_unmap */
               goto out;
       }
       sc->wss_irq = irq->ar_irq;

       /* Find our playback and record DRQs */
       playdrq = acpi_res_drq(&res, 0);
       recdrq = acpi_res_drq(&res, 1);
       if (playdrq == NULL || recdrq == NULL) {
               aprint_error_dev(self, " unable to find drq resources\n");
               /* XXX bus_space_unmap */
               goto out;
       }
       sc->wss_playdrq = playdrq->ar_drq;
       sc->wss_recdrq = recdrq->ar_drq;

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

       /* Look for the ad1848 */
       if (!ad1848_isa_probe(&sc->sc_ad1848)) {
               aprint_error_dev(self, "ad1848 probe failed\n");
               /* XXX cleanup */
               goto out;
       }

       /* Attach our wss device */
       aprint_naive("%s", device_xname(self));
       aprint_normal("%s", device_xname(self));
       wssattach(sc);

       arg.type = AUDIODEV_TYPE_OPL;
       arg.hwif = 0;
       arg.hdl = 0;
       config_found(self, &arg, audioprint, CFARGS(.iattr = "wss"));

out:
       acpi_resource_cleanup(&res);
}