/*      $NetBSD: j720pcic.c,v 1.9 2023/12/20 14:50:02 thorpej Exp $        */

/*-
 * Copyright (c) 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by IWAMOTO Toshihiro.
 *
 * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

/* Jornada 720 PCMCIA support. */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: j720pcic.c,v 1.9 2023/12/20 14:50:02 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/bus.h>

#include <machine/platid.h>
#include <machine/platid_mask.h>

#include <dev/pcmcia/pcmciachip.h>
#include <dev/pcmcia/pcmciavar.h>

#include <arm/sa11x0/sa11x0_reg.h>
#include <arm/sa11x0/sa11x0_var.h>
#include <arm/sa11x0/sa1111_reg.h>
#include <arm/sa11x0/sa1111_var.h>
#include <arm/sa11x0/sa11x1_pcicreg.h>
#include <arm/sa11x0/sa11xx_pcicvar.h>
#include <arm/sa11x0/sa11x1_pcicvar.h>

#include "sacpcic.h"

static int      sacpcic_match(device_t, cfdata_t, void *);
static void     sacpcic_attach(device_t, device_t, void *);

static void     j720_socket_setup(struct sapcic_socket *);
static void     j720_set_power(struct sapcic_socket *, int);

static struct sapcic_tag j720_sacpcic_functions = {
        sacpcic_read,
        sacpcic_write,
        j720_set_power,
        sacpcic_clear_intr,
        sacpcic_intr_establish,
        sacpcic_intr_disestablish
};

static int j720_power_capability[] = {
        SAPCIC_POWER_5V | SAPCIC_POWER_3V, SAPCIC_POWER_3V
};

static struct platid_data sacpcic_platid_table[] = {
        { &platid_mask_MACH_HP_JORNADA_7XX, j720_power_capability },
        { NULL, NULL }
};

CFATTACH_DECL_NEW(sacpcic, sizeof(struct sacpcic_softc),
    sacpcic_match, sacpcic_attach, NULL, NULL);


static int
sacpcic_match(device_t parent, cfdata_t cf, void *aux)
{

        return 1;
}

static void
sacpcic_attach(device_t parent, device_t self, void *aux)
{
        struct sacc_softc *psc;
        struct sacpcic_softc *sc;

        psc = device_private(parent);
        sc = device_private(self);
        sc->sc_pc.sc_dev = self;

        sacpcic_attach_common(psc, sc, aux, j720_socket_setup);
}

static void
j720_socket_setup(struct sapcic_socket *sp)
{
        int *ip;
        struct platid_data *p;
        int socket = sp->socket;

        p = platid_search_data(&platid, sacpcic_platid_table);

        if (p == NULL) {
                sp->power_capability = SAPCIC_POWER_5V;
        } else {
                ip = (int *)p->data;
                sp->power_capability = ip[socket];
        }

        sp->pcictag = &j720_sacpcic_functions;
}

static void
j720_set_power(struct sapcic_socket *so, int arg)
{
        int newval, oldval, s;
        struct sacc_softc *sc = so->pcictag_cookie;

        /* XXX this isn't well confirmed. DANGER DANGER */
        switch (arg) {
        case SAPCIC_POWER_OFF:
                newval = 0;
                break;
        case SAPCIC_POWER_3V:
                newval = 2;
                break;
        case SAPCIC_POWER_5V:
                newval = 1;
                break;
        default:
                panic("j720_set_power: bogus arg (%d)", arg);
        }

        s = splbio();
        oldval = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR);

        switch (so->socket) {
        case 0:
                newval = newval | (oldval & 0xc);
                break;
        case 1:
                newval = (newval << 2) | (oldval & 3);
                break;
        default:
                splx(s);
                panic("j720_set_power: bogus socket (%d)", so->socket);
        }
        bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR, newval);
        splx(s);
}