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 ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #ifndef DEV_FDT_PINCTRL_H
29 #define DEV_FDT_PINCTRL_H
31 #include "fdt_pinctrl_if.h"
34 * Configure pins by name or index. This looks up the pinctrl-N property in
35 * client's fdt data by index or name, and passes each handle in it to the
36 * pinctrl driver for configuration.
38 int fdt_pinctrl_configure(device_t client, u_int index);
39 int fdt_pinctrl_configure_by_name(device_t client, const char * name);
42 * Register a pinctrl driver so that it can be used by other devices which call
43 * fdt_pinctrl_configure(). The pinprop argument is the name of a property that
44 * identifies each descendent of the pinctrl node which is a pin configuration
45 * node whose xref phandle can be passed to FDT_PINCTRL_CONFIGURE(). If this is
46 * NULL, every descendant node is registered.
48 int fdt_pinctrl_register(device_t pinctrl, const char *pinprop);
51 * Walk the device tree and configure pins for each enabled device whose
52 * pinctrl-0 property contains references to nodes which are children of the
53 * given pinctrl device. This helper routine is for use by pinctrl drivers.
55 int fdt_pinctrl_configure_tree(device_t pinctrl);
57 #endif /* DEV_FDT_PINCTRL_H */