/*      $NetBSD: hd64465.c,v 1.19 2021/08/07 16:18:55 thorpej Exp $     */

/*-
 * Copyright (c) 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by UCHIYAMA Yasushi.
 *
 * 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hd64465.c,v 1.19 2021/08/07 16:18:55 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/boot_flag.h>
#include <sys/bus.h>

#include <machine/intr.h>
#include <machine/debug.h>

#include <sh3/intcreg.h>
#include <hpcsh/dev/hd64465/hd64465var.h>
#include <hpcsh/dev/hd64465/hd64465reg.h>
#include <hpcsh/dev/hd64465/hd64465intcreg.h>

/* HD64465 modules. */
STATIC const struct hd64465_module {
        const char *name;
} hd64465_modules[] = {
        [HD64465_MODULE_PS2IF]          = { "hd64465ps2if" },
        [HD64465_MODULE_PCMCIA]         = { "hd64465pcmcia" },
        [HD64465_MODULE_AFE]            = { "hd64465afe" },
        [HD64465_MODULE_GPIO]           = { "hd64465gpio" },
        [HD64465_MODULE_KBC]            = { "hd64465kbc" },
        [HD64465_MODULE_IRDA]           = { "hd64465irda" },
        [HD64465_MODULE_UART]           = { "hd64465uart" },
        [HD64465_MODULE_PARALEL]        = { "hd64465paralel" },
        [HD64465_MODULE_CODEC]          = { "hd64465codec" },
        [HD64465_MODULE_OHCI]           = { "hd64465ohci" },
        [HD64465_MODULE_ADC]            = { "hd64465adc" }
};

STATIC int hd64465_match(device_t, cfdata_t, void *);
STATIC void hd64465_attach(device_t, device_t, void *);
STATIC int hd64465_print(void *, const char *);
#ifdef DEBUG
STATIC void hd64465_info(void);
#endif

CFATTACH_DECL_NEW(hd64465if, 0,
    hd64465_match, hd64465_attach, NULL, NULL);

int
hd64465_match(device_t parent, cfdata_t cf, void *aux)
{

        if (strcmp("hd64465if", cf->cf_name))
                return (0);

        if (hd64465_reg_read_2(HD64465_SDIDR) != 0x8122) {
                /* not HD64465 */
                return (0);
        }

        return (1);
}

void
hd64465_attach(device_t parent, device_t self, void *aux)
{
        const struct hd64465_module *module;
        struct hd64465_attach_args ha;
        uint16_t r;
        size_t i;

        printf("\n");
#ifdef DEBUG
        if (bootverbose)
                hd64465_info();
#endif

        r = hd64465_reg_read_2(HD64465_SRR);
        printf("%s: HITACHI HD64465 rev. %d.%d\n", device_xname(self),
            (r >> 8) & 0xff, r & 0xff);

        /* Mask all interrupt */
        hd64465_reg_write_2(HD64465_NIMR, 0xffff);
        /* Edge trigger mode to clear pending interrupt. */
        hd64465_reg_write_2(HD64465_NITR, 0xffff);
        /* Clear pending interrupt */
        hd64465_reg_write_2(HD64465_NIRR, 0x0000);

        /* Attach all sub modules */
        for (i = 0, module = hd64465_modules;
            i < __arraycount(hd64465_modules);
            i++, module++) {
                if (module->name == 0)
                        continue;
                ha.ha_module_id = i;
                config_found(self, &ha, hd64465_print, CFARGS_NONE);
        }       
}

int
hd64465_print(void *aux, const char *pnp)
{
        struct hd64465_attach_args *ha = aux;

        if (pnp)
                aprint_normal("%s at %s",
                    hd64465_modules[ha->ha_module_id].name, pnp);

        return (UNCONF);
}

void *
hd64465_intr_establish(int irq, int mode, int level,
    int (*func)(void *), void *arg)
{
        uint16_t r;
        int s;

        s = splhigh();
        /* Trigger type */
        r = hd64465_reg_read_2(HD64465_NITR);
        switch (mode) {
        case IST_PULSE:
                /* FALLTHROUGH */
        case IST_EDGE:
                r |= irq;
                break;
        case IST_LEVEL:
                r &= ~irq;
                break;
        }
        hd64465_reg_write_2(HD64465_NITR, r);

        hd6446x_intr_establish(irq, mode, level, func, arg);
        splx(s);

        return (void *)irq;
}

void
hd64465_intr_disestablish(void *handle)
{

        hd6446x_intr_disestablish(handle);
}

/* For the sake of Windows CE reboot clearly. */
void
hd64465_shutdown(void)
{

        /* Enable all interrupt */
        hd64465_reg_write_2(HD64465_NIMR, 0x0000);

        /* Level trigger mode */
        hd64465_reg_write_2(HD64465_NITR, 0x0000);
}

void
hd64465_info(void)
{
        uint16_t r;

        dbg_bit_print_msg(_reg_read_2(SH4_ICR), "SH4_ICR");
        r = hd64465_reg_read_2(HD64465_NIMR);
        dbg_bit_print_msg(r, "NIMR");
        r = hd64465_reg_read_2(HD64465_NIRR);
        dbg_bit_print_msg(r, "NIRR");
        r = hd64465_reg_read_2(HD64465_NITR);
        dbg_bit_print_msg(r, "NITR");
}