2 * Copyright (c) 2014 Ian Lepore <ian@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 #include <sys/param.h>
32 #include <dev/ofw/ofw_bus.h>
33 #include <dev/ofw/ofw_bus_subr.h>
35 #include "fdt_pinctrl_if.h"
37 #include <dev/fdt/fdt_common.h>
38 #include <dev/fdt/fdt_pinctrl.h>
41 fdt_pinctrl_configure(device_t client, u_int index)
48 snprintf(name, sizeof(name), "pinctrl-%u", index);
49 nconfigs = OF_getprop_alloc(ofw_bus_get_node(client), name,
50 sizeof(*configs), (void **)&configs);
54 return (0); /* Empty property is documented as valid. */
55 for (i = 0; i < nconfigs; i++) {
56 if ((pinctrl = OF_device_from_xref(configs[i])) != NULL)
57 FDT_PINCTRL_CONFIGURE(pinctrl, configs[i]);
59 free(configs, M_OFWPROP);
64 fdt_pinctrl_configure_by_name(device_t client, const char * name)
67 int i, offset, nameslen;
69 nameslen = OF_getprop_alloc(ofw_bus_get_node(client), "pinctrl-names",
70 sizeof(*names), (void **)&names);
73 for (i = 0, offset = 0; offset < nameslen; i++) {
74 if (strcmp(name, &names[offset]) == 0)
76 offset += strlen(&names[offset]) + 1;
78 free(names, M_OFWPROP);
79 if (offset < nameslen)
80 return (fdt_pinctrl_configure(client, i));
86 pinctrl_register_children(device_t pinctrl, phandle_t parent,
92 * Recursively descend from parent, looking for nodes that have the
93 * given property, and associate the pinctrl device_t with each one.
95 for (node = OF_child(parent); node != 0; node = OF_peer(node)) {
96 pinctrl_register_children(pinctrl, node, pinprop);
97 if (pinprop == NULL || OF_hasprop(node, pinprop)) {
98 OF_device_register_xref(OF_xref_from_node(node),
106 fdt_pinctrl_register(device_t pinctrl, const char *pinprop)
110 node = ofw_bus_get_node(pinctrl);
111 OF_device_register_xref(OF_xref_from_node(node), pinctrl);
112 return (pinctrl_register_children(pinctrl, node, pinprop));
116 pinctrl_configure_children(device_t pinctrl, phandle_t parent)
118 phandle_t node, *configs;
121 for (node = OF_child(parent); node != 0; node = OF_peer(node)) {
122 if (!fdt_is_enabled(node))
124 pinctrl_configure_children(pinctrl, node);
125 nconfigs = OF_getencprop_alloc(node, "pinctrl-0",
126 sizeof(*configs), (void **)&configs);
131 OF_getprop(node, "name", &name, sizeof(name));
132 printf("Processing %d pin-config node(s) in pinctrl-0 for %s\n",
135 for (i = 0; i < nconfigs; i++) {
136 if (OF_device_from_xref(configs[i]) == pinctrl)
137 FDT_PINCTRL_CONFIGURE(pinctrl, configs[i]);
139 free(configs, M_OFWPROP);
145 fdt_pinctrl_configure_tree(device_t pinctrl)
148 return (pinctrl_configure_children(pinctrl, OF_peer(0)));