/*      $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");
}