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/* $NetBSD: smuiic.c,v 1.10 2021/08/09 04:07:29 thorpej Exp $ */
/*-
* Copyright (c) 2013 Phileas Fogg
* 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.
*
* 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/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <machine/autoconf.h>
#include <dev/ofw/openfirm.h>
#include <dev/i2c/i2cvar.h>
#include <macppc/dev/smuvar.h>
#include <macppc/dev/smuiicvar.h>
struct smuiic_softc {
device_t sc_dev;
int sc_node;
struct i2c_controller *sc_i2c;
};
static int smuiic_match(device_t, struct cfdata *, void *);
static void smuiic_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(smuiic, sizeof(struct smuiic_softc),
smuiic_match, smuiic_attach, NULL, NULL);
static int
smuiic_match(device_t parent, struct cfdata *cf, void *aux)
{
struct smu_iicbus_confargs *ca = aux;
if (strcmp(ca->ca_name, "i2c-bus") == 0)
return 5;
if (strcmp(ca->ca_name, "i2c") == 0)
return 5;
return 0;
}
static void
smuiic_attach(device_t parent, device_t self, void *aux)
{
struct smu_iicbus_confargs *ca = aux;
struct smuiic_softc *sc = device_private(self);
struct i2cbus_attach_args iba;
prop_dictionary_t dict = device_properties(self);
int devs, devc;
uint32_t addr;
char compat[256];
prop_array_t cfg;
prop_dictionary_t dev;
prop_data_t data;
char name[32], descr[32], num[8];
sc->sc_dev = self;
sc->sc_node = ca->ca_node;
sc->sc_i2c = ca->ca_tag;
printf("\n");
cfg = prop_array_create();
prop_dictionary_set(dict, "i2c-child-devices", cfg);
prop_object_release(cfg);
/* look for i2c devices */
devs = OF_child(sc->sc_node);
while (devs != 0) {
if (OF_getprop(devs, "name", name, 256) <= 0)
goto skip;
if (OF_getprop(devs, "compatible",
compat, 256) <= 0)
goto skip;
if (OF_getprop(devs, "reg", &addr, 4) <= 0)
goto skip;
addr = (addr & 0xff) >> 1;
dev = prop_dictionary_create();
prop_dictionary_set_string(dev, "name", name);
data = prop_data_create_copy(compat, strlen(compat)+1);
prop_dictionary_set(dev, "compatible", data);
prop_object_release(data);
prop_dictionary_set_uint32(dev, "addr", addr);
prop_dictionary_set_uint64(dev, "cookie", devs);
devc = OF_child(devs);
while (devc != 0) {
int reg;
if (OF_getprop(devc, "reg", ®, 4) < 4) goto nope;
if (OF_getprop(devc, "location", descr, 32) <= 0)
goto nope;
printf("found '%s' at %02x\n", descr, reg);
snprintf(num, 7, "s%02x", reg);
prop_dictionary_set_string(dev, num, descr);
nope:
devc = OF_peer(devc);
}
prop_array_add(cfg, dev);
prop_object_release(dev);
skip:
devs = OF_peer(devs);
}
memset(&iba, 0, sizeof(iba));
iba.iba_tag = sc->sc_i2c;
config_found(sc->sc_dev, &iba, iicbus_print, CFARGS_NONE);
}
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