/*      $NetBSD: lubbock_pcic.c,v 1.8 2023/12/20 13:55:18 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lubbock_pcic.c,v 1.8 2023/12/20 13:55:18 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 <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 <evbarm/lubbock/lubbock_reg.h>
#include <evbarm/lubbock/lubbock_var.h>

static  int     sacpcic_match(device_t, cfdata_t, void *);
static  void    sacpcic_attach(device_t, device_t, void *);
static  void    lubbock_set_power(struct sapcic_socket *so, int arg);
static  void    lubbock_socket_setup(struct sapcic_socket *sp);

static struct sapcic_tag lubbock_sacpcic_functions = {
       sacpcic_read,
       sacpcic_write,
       lubbock_set_power,
       sacpcic_clear_intr,
       sacpcic_intr_establish,
       sacpcic_intr_disestablish
};

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
lubbock_socket_setup(struct sapcic_socket *sp)
{
       sp->power_capability = SAPCIC_POWER_5V | SAPCIC_POWER_3V;
       sp->pcictag = &lubbock_sacpcic_functions;
}

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

       sc->sc_pc.sc_dev = self;
       sacpcic_attach_common(device_private(parent),
           sc, aux, lubbock_socket_setup);
}


static void
lubbock_set_power(struct sapcic_socket *so, int arg)
{
       struct sacc_softc *sc = so->pcictag_cookie;
       struct obio_softc *bsc = device_private(device_parent(sc->sc_dev));
       int s;
       uint16_t tmp;

       static const uint8_t vval_socket0[] = {
               /* for socket0 (pcmcia) */
               0x00,           /* OFF */
               0x08,           /* 3.3V */
               0x05,           /* 5V */
       };
       static const uint16_t vval_socket1[] = {
               /* for socket1 (CF) */
               0x0000,         /* OFF */
               0x8000,         /* 3.3V */
               0x4000,         /* 5V */
       };

       if( arg < 0 || SAPCIC_POWER_5V < arg )
               panic("sacpcic_set_power: bogus arg\n");

       switch( so->socket ){
       case 0:
               bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR,
                                 vval_socket0[arg]);
               break;
       case 1:
               s = splhigh();
               tmp = bus_space_read_2(bsc->sc_iot, bsc->sc_obioreg_ioh,
                   LUBBOCK_MISCWR);
               bus_space_write_2(bsc->sc_iot, bsc->sc_obioreg_ioh,
                   LUBBOCK_MISCWR, (tmp & 0x3fff) | vval_socket1[arg] );
               splx(s);
               break;
       default:
               aprint_normal("unknown socket number: %d\n", so->socket);
       }
}