Allow building the GPIO bus and associated bits as modules.

This is primarily done to save a few bytes here and there on embedded
systems with limited flash space for kernels - a very limited (sub-1MB)
space may be available for the kernel and may only support gzip encoding.
The rootfs can be LZMA compressed.

4 files changed, 150 insertions, 0 deletions

diff --git a/sys/modules/gpio/Makefile b/sys/modules/gpio/Makefile
new file mode 100644
index 000000000000..648c33aba58f
--- /dev/null
+++ b/sys/modules/gpio/Makefile
@@ -0,0 +1,30 @@
+#
+# $FreeBSD$
+#
+# Copyright (c) 2011 Adrian Chadd.  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.
+#
+
+SUBDIR = gpiobus gpioiic gpioled
+
+.include <bsd.subdir.mk>
diff --git a/sys/modules/gpio/gpiobus/Makefile b/sys/modules/gpio/gpiobus/Makefile
new file mode 100644
index 000000000000..1b7afe8eef22
--- /dev/null
+++ b/sys/modules/gpio/gpiobus/Makefile
@@ -0,0 +1,40 @@
+#
+# Copyright (c) 2012 Adrian Chadd, Xenion Pty Ltd
+# 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,
+#    without modification.
+# 2. Redistributions in binary form must reproduce at minimum a disclaimer
+#    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+#    redistribution must be conditioned upon including a substantially
+#    similar Disclaimer requirement for further binary redistribution.
+#
+# NO WARRANTY
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+# AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+# THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+#
+# $FreeBSD$
+#
+
+.PATH:	${.CURDIR}/../../../dev/gpio/
+
+KMOD=	gpiobus
+SRCS=	gpiobus.c
+SRCS+=	device_if.h bus_if.h gpio_if.h gpiobus_if.h
+
+CFLAGS+=  -I. -I${.CURDIR}/../../../dev/gpio/
+
+.include <bsd.kmod.mk>
diff --git a/sys/modules/gpio/gpioiic/Makefile b/sys/modules/gpio/gpioiic/Makefile
new file mode 100644
index 000000000000..be598619f1b9
--- /dev/null
+++ b/sys/modules/gpio/gpioiic/Makefile
@@ -0,0 +1,40 @@
+#
+# Copyright (c) 2012 Adrian Chadd, Xenion Pty Ltd
+# 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,
+#    without modification.
+# 2. Redistributions in binary form must reproduce at minimum a disclaimer
+#    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+#    redistribution must be conditioned upon including a substantially
+#    similar Disclaimer requirement for further binary redistribution.
+#
+# NO WARRANTY
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+# AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+# THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+#
+# $FreeBSD$
+#
+
+.PATH:	${.CURDIR}/../../../dev/gpio/
+
+KMOD=	gpioiic
+SRCS=	gpioiic.c
+SRCS+=	device_if.h bus_if.h gpio_if.h gpiobus_if.h iicbus_if.h iicbb_if.h
+
+CFLAGS+=  -I. -I${.CURDIR}/../../../dev/gpio/
+
+.include <bsd.kmod.mk>
diff --git a/sys/modules/gpio/gpioled/Makefile b/sys/modules/gpio/gpioled/Makefile
new file mode 100644
index 000000000000..0420b1bc2682
--- /dev/null
+++ b/sys/modules/gpio/gpioled/Makefile
@@ -0,0 +1,40 @@
+#
+# Copyright (c) 2012 Adrian Chadd, Xenion Pty Ltd
+# 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,
+#    without modification.
+# 2. Redistributions in binary form must reproduce at minimum a disclaimer
+#    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+#    redistribution must be conditioned upon including a substantially
+#    similar Disclaimer requirement for further binary redistribution.
+#
+# NO WARRANTY
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+# AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+# THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+#
+# $FreeBSD$
+#
+
+.PATH:	${.CURDIR}/../../../dev/gpio/
+
+KMOD=	gpioled
+SRCS=	gpioled.c
+SRCS+=	device_if.h bus_if.h gpio_if.h gpiobus_if.h
+
+CFLAGS+=  -I. -I${.CURDIR}/../../../dev/gpio/
+
+.include <bsd.kmod.mk>