MFC 271546:

  Create an interface and support routines for drivers that handle IO pin
  multiplexing and configuration based on FDT data.

1 files changed, 47 insertions, 0 deletions

diff --git a/sys/dev/fdt/fdt_pinctrl_if.m b/sys/dev/fdt/fdt_pinctrl_if.m
new file mode 100644
index 0000000..c499cdf
--- /dev/null
+++ b/sys/dev/fdt/fdt_pinctrl_if.m
@@ -0,0 +1,47 @@
+#-
+# Copyright (c) 2014 Ian Lepore
+# 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 AUTHOR 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 AUTHOR 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.
+#
+# $FreeBSD$
+#
+
+#include <sys/types.h>
+#include <dev/ofw/openfirm.h>
+
+#
+# This is the interface that fdt_pinctrl drivers provide to other drivers.
+#
+
+INTERFACE fdt_pinctrl;
+
+#
+# Set pins to the specified configuration.  The cfgxref arg is an xref phandle
+# to a descendent node (child, grandchild, ...) of the pinctrl device node.
+# Returns 0 on success or a standard errno value.
+#
+METHOD int configure {
+	device_t	pinctrl;
+	phandle_t	cfgxref;
+};
+