1 /*- 2 * Copyright (c) 2013 Phileas Fogg 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 15 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 16 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 * POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/param.h> 28 #include <sys/systm.h> 29 #include <sys/kernel.h> 30 #include <sys/malloc.h> 31 #include <sys/device.h> 32 #include <sys/proc.h> 33 #include <sys/mutex.h> 34 #include <sys/sysctl.h> 35 36 #include <machine/autoconf.h> 37 38 #include <dev/ofw/openfirm.h> 39 #include <dev/i2c/i2cvar.h> 40 41 #include <macppc/dev/smuvar.h> 42 #include <macppc/dev/smuiicvar.h> 43 44 struct smuiic_softc { 45 device_t sc_dev; 46 int sc_node; 47 struct i2c_controller *sc_i2c; 48 }; 49 50 static int smuiic_match(device_t, struct cfdata *, void *); 51 static void smuiic_attach(device_t, device_t, void *); 52 53 CFATTACH_DECL_NEW(smuiic, sizeof(struct smuiic_softc), 54 smuiic_match, smuiic_attach, NULL, NULL); 55 56 static int 57 smuiic_match(device_t parent, struct cfdata *cf, void *aux) 58 { 59 struct smu_iicbus_confargs *ca = aux; 60 61 if (strcmp(ca->ca_name, "i2c-bus") == 0) 62 return 5; 63 64 return 0; 65 } 66 67 static void 68 smuiic_attach(device_t parent, device_t self, void *aux) 69 { 70 struct smu_iicbus_confargs *ca = aux; 71 struct smuiic_softc *sc = device_private(self); 72 struct i2cbus_attach_args iba; 73 prop_dictionary_t dict = device_properties(self); 74 int devs; 75 uint32_t addr; 76 char compat[256]; 77 prop_array_t cfg; 78 prop_dictionary_t dev; 79 prop_data_t data; 80 char name[32]; 81 82 sc->sc_dev = self; 83 sc->sc_node = ca->ca_node; 84 sc->sc_i2c = ca->ca_tag; 85 printf("\n"); 86 87 cfg = prop_array_create(); 88 prop_dictionary_set(dict, "i2c-child-devices", cfg); 89 prop_object_release(cfg); 90 91 /* look for i2c devices */ 92 devs = OF_child(sc->sc_node); 93 while (devs != 0) { 94 if (OF_getprop(devs, "name", name, 256) <= 0) 95 goto skip; 96 if (OF_getprop(devs, "compatible", 97 compat, 256) <= 0) 98 goto skip; 99 if (OF_getprop(devs, "reg", &addr, 4) <= 0) 100 goto skip; 101 addr = (addr & 0xff) >> 1; 102 dev = prop_dictionary_create(); 103 prop_dictionary_set_cstring(dev, "name", name); 104 data = prop_data_create_data(compat, strlen(compat)+1); 105 prop_dictionary_set(dev, "compatible", data); 106 prop_object_release(data); 107 prop_dictionary_set_uint32(dev, "addr", addr); 108 prop_dictionary_set_uint64(dev, "cookie", devs); 109 prop_array_add(cfg, dev); 110 prop_object_release(dev); 111 skip: 112 devs = OF_peer(devs); 113 } 114 115 memset(&iba, 0, sizeof(iba)); 116 iba.iba_tag = sc->sc_i2c; 117 118 config_found_ia(sc->sc_dev, "i2cbus", &iba, iicbus_print); 119 } 120