/*      $NetBSD: kb_hb.c,v 1.15 2021/08/07 16:19:01 thorpej Exp $       */

/*-
 * Copyright (c) 2000 Tsubai Masanari.  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.
 * 3. 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: kb_hb.c,v 1.15 2021/08/07 16:19:01 thorpej Exp $");

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

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wskbdvar.h>
#include <dev/wscons/wsksymdef.h>
#include <dev/wscons/wsksymvar.h>

#include <machine/adrsmap.h>

#include <newsmips/dev/hbvar.h>

struct kbreg {
        volatile uint8_t kb_data;
        volatile uint8_t kb_stat;
        volatile uint8_t kb_reset;
        volatile uint8_t kb_init;
};

struct kb_hb_softc {
        device_t sc_dev;
        struct kbreg *sc_reg;
        device_t sc_wskbddev;
};

int kb_hb_match(device_t, cfdata_t, void *);
void kb_hb_attach(device_t, device_t, void *);
int kb_hb_intr(void *);

void kb_hb_cnattach(void);
void kb_hb_cngetc(void *, u_int *, int *);
void kb_hb_cnpollc(void *, int);

int kb_hb_enable(void *, int);
void kb_hb_setleds(void *, int);
int kb_hb_ioctl(void *, u_long, void *, int, struct lwp *);

extern struct wscons_keydesc newskb_keydesctab[];

CFATTACH_DECL_NEW(kb_hb, sizeof(struct kb_hb_softc),
    kb_hb_match, kb_hb_attach, NULL, NULL);

struct wskbd_accessops kb_hb_accessops = {
        kb_hb_enable,
        kb_hb_setleds,
        kb_hb_ioctl
};

struct wskbd_consops kb_hb_consops = {
        kb_hb_cngetc,
        kb_hb_cnpollc
};

struct wskbd_mapdata kb_hb_keymapdata = {
        newskb_keydesctab,
        KB_JP
};

int
kb_hb_match(device_t parent, cfdata_t cf, void *aux)
{
        struct hb_attach_args *ha = aux;

        if (strcmp(ha->ha_name, "kb") == 0)
                return 1;

        return 0;
}

void
kb_hb_attach(device_t parent, device_t self, void *aux)
{
        struct kb_hb_softc *sc = device_private(self);
        struct hb_attach_args *ha = aux;
        struct kbreg *reg;
        volatile uint32_t *dipsw = (void *)DIP_SWITCH;
        struct wskbddev_attach_args aa;
        int intr, cons;

        sc->sc_dev = self;

        reg = (struct kbreg *)ha->ha_addr;
        intr = ha->ha_level;

        if (intr == -1)
                intr = 2;

        sc->sc_reg = reg;
        reg->kb_reset = 0x01;
        reg->kb_init = 0xf0;    /* 9600 bps */

        aprint_normal(" level %d", intr);
        cons = 0;
        if (*dipsw & 7) {
                cons = 1;
                aprint_normal(" (console)");
        }
        aprint_normal("\n");

        hb_intr_establish(intr, INTEN0_KBDINT, IPL_TTY, kb_hb_intr, sc);

        aa.console = cons;
        aa.keymap = &kb_hb_keymapdata;
        aa.accessops = &kb_hb_accessops;
        aa.accesscookie = sc;
        sc->sc_wskbddev = config_found(self, &aa, wskbddevprint, CFARGS_NONE);
}

int
kb_hb_intr(void *v)
{
        struct kb_hb_softc *sc = v;
        struct kbreg *reg = sc->sc_reg;
        volatile uint8_t *ien = (void *)INTEN0;
        int code, type, release, val;
        int rv = 0;

        *ien &= ~RX_KBINTE;

        while (reg->kb_stat & RX_KBRDY) {
                code = reg->kb_data;
                release = code & 0x80;
                val = code & 0x7f;
                type = release ? WSCONS_EVENT_KEY_UP : WSCONS_EVENT_KEY_DOWN;
                if (sc->sc_wskbddev)
                        wskbd_input(sc->sc_wskbddev, type, val);
                rv = 1;
        }

        *ien |= RX_KBINTE;
        return rv;
}

void
kb_hb_cnattach(void)
{
        volatile uint32_t *dipsw = (void *)DIP_SWITCH;

        if (*dipsw & 7)
                wskbd_cnattach(&kb_hb_consops, (void *)KEYB_DATA,
                    &kb_hb_keymapdata);
}

void
kb_hb_cngetc(void *v, u_int *type, int *data)
{
        struct kbreg *reg = v;
        volatile uint8_t *ien = (void *)INTEN0;
        int code, release, ointr;

        ointr = *ien & RX_KBINTE;
        *ien &= ~RX_KBINTE;

        /* Wait for key data. */
        while ((reg->kb_stat & RX_KBRDY) == 0);

        code = reg->kb_data;
        release = code & 0x80;
        *data = code & 0x7f;
        *type = release ? WSCONS_EVENT_KEY_UP : WSCONS_EVENT_KEY_DOWN;

        *ien |= ointr;
}

void
kb_hb_cnpollc(void *v, int on)
{
}

int
kb_hb_enable(void *v, int on)
{

        return 0;
}

void
kb_hb_setleds(void *v, int on)
{
}

int
kb_hb_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
{

        switch (cmd) {

        case WSKBDIO_GTYPE:
                *(int *)data = 0;               /* XXX */
                return 0;
        case WSKBDIO_SETLEDS:
                return 0;
        case WSKBDIO_GETLEDS:
                *(int *)data = 0;
                return 0;
        }

        return EPASSTHROUGH;
}