1 files changed, 89 insertions, 0 deletions
diff --git a/freebsd/sys/dev/extres/regulator/regulator_bus.c b/freebsd/sys/dev/extres/regulator/regulator_bus.c
new file mode 100644
index 00000000..b79c2633
--- /dev/null
+++ b/freebsd/sys/dev/extres/regulator/regulator_bus.c
@@ -0,0 +1,89 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+
+#include <dev/fdt/simplebus.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+struct ofw_regulator_bus_softc {
+	struct simplebus_softc simplebus_sc;
+};
+
+static int
+ofw_regulator_bus_probe(device_t dev)
+{
+	const char	*name;
+
+	name = ofw_bus_get_name(dev);
+	if (name == NULL || strcmp(name, "regulators") != 0)
+		return (ENXIO);
+	device_set_desc(dev, "OFW regulators bus");
+
+	return (0);
+}
+
+static int
+ofw_regulator_bus_attach(device_t dev)
+{
+	phandle_t node, child;
+
+	node  = ofw_bus_get_node(dev);
+	simplebus_init(dev, node);
+
+	for (child = OF_child(node); child > 0; child = OF_peer(child)) {
+		simplebus_add_device(dev, child, 0, NULL, -1, NULL);
+	}
+
+	return (bus_generic_attach(dev));
+}
+
+static device_method_t ofw_regulator_bus_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		ofw_regulator_bus_probe),
+	DEVMETHOD(device_attach,	ofw_regulator_bus_attach),
+
+	DEVMETHOD_END
+};
+
+DEFINE_CLASS_1(ofw_regulator_bus, ofw_regulator_bus_driver,
+    ofw_regulator_bus_methods, sizeof(struct ofw_regulator_bus_softc),
+    simplebus_driver);
+static devclass_t ofw_regulator_bus_devclass;
+EARLY_DRIVER_MODULE(ofw_regulator_bus, simplebus, ofw_regulator_bus_driver,
+    ofw_regulator_bus_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
+MODULE_VERSION(ofw_regulator_bus, 1);