/*      $OpenBSD: maci2c.c,v 1.11 2016/05/23 15:23:20 mglocker Exp $    */

/*
 * Copyright (c) 2005 Mark Kettenis
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

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

#define _I2C_PRIVATE
#include <dev/i2c/i2cvar.h>
#include <dev/ofw/openfirm.h>

#include <arch/macppc/dev/maci2cvar.h>

void
maciic_scan(struct device *self, struct i2cbus_attach_args *iba, void *aux)
{
        int iba_node = *(int *)aux;
        struct i2c_attach_args ia;
        char name[32];
        u_int32_t reg;
        int node;

        for (node = OF_child(iba_node); node; node = OF_peer(node)) {
                if (OF_getprop(node, "reg", &reg, sizeof reg) != sizeof reg &&
                    OF_getprop(node, "i2c-address", &reg, sizeof reg) != sizeof reg)
                        continue;
                bzero(&ia, sizeof ia);
                ia.ia_tag = iba->iba_tag;
                ia.ia_addr = (reg >> 1);
                ia.ia_cookie = &node;
                bzero(name, sizeof name);
                if (OF_getprop(node, "compatible", &name,
                    sizeof name) && name[0])
                        ia.ia_name = name;
                if (ia.ia_name == NULL && 
                    OF_getprop(node, "name", &name,
                    sizeof name) && name[0]) {
                        if (strcmp(name, "cereal") == 0)
                                continue;
                        ia.ia_name = name;
                }
                /* XXX We should write a real driver for these instead
                   of reaching over from the sound driver that sits on
                   the i2s port.  For now hide them.  */
                if (strcmp(name, "deq") == 0 || strcmp(name, "tas3004") == 0)
                        continue;
                if (ia.ia_name)
                        config_found(self, &ia, iic_print);
        }
}