Integrate Efika MX project back to home.

Sponsored by:	The FreeBSD Foundation

1 files changed, 232 insertions, 0 deletions

diff --git a/sys/arm/freescale/imx/imx51_iomux.c b/sys/arm/freescale/imx/imx51_iomux.c
new file mode 100644
index 0000000..62f3509
--- /dev/null
+++ b/sys/arm/freescale/imx/imx51_iomux.c
@@ -0,0 +1,232 @@
+/*	$NetBSD: imx51_iomux.c,v 1.3 2012/04/15 09:51:31 bsh Exp $	*/
+
+/*
+ * Copyright (c) 2009, 2010  Genetec Corporation.  All rights reserved.
+ * Written by Hashimoto Kenichi for Genetec Corporation.
+ *
+ * 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 GENETEC CORPORATION ``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 GENETEC CORPORATION
+ * 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.
+ */
+
+/*-
+ * Copyright (c) 2012 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * Portions of this software were developed by Oleksandr Rybalko
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * 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/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/malloc.h>
+#include <sys/rman.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <arm/freescale/imx/imx51_iomuxvar.h>
+#include <arm/freescale/imx/imx51_iomuxreg.h>
+
+
+#define	IOMUX_WRITE(_sc, _r, _v)					\
+	    bus_write_4((_sc)->sc_res, (_r), (_v))
+#define	IOMUX_READ(_sc, _r)						\
+	    bus_read_4((_sc)->sc_res, (_r))
+#define	IOMUX_SET(_sc, _r, _m)						\
+	    IOMUX_WRITE((_sc), (_r), IOMUX_READ((_sc), (_r)) | (_m))
+#define	IOMUX_CLEAR(_sc, _r, _m)					\
+	    IOMUX_WRITE((_sc), (_r), IOMUX_READ((_sc), (_r)) & ~(_m))
+
+struct iomux_softc {
+	struct resource	*sc_res;
+	device_t 	sc_dev;
+};
+
+static int iomux_probe(device_t);
+static int iomux_attach(device_t);
+
+static struct iomux_softc *iomuxsc = NULL;
+
+static struct resource_spec imx_iomux_spec[] = {
+	{ SYS_RES_MEMORY,	0,	RF_ACTIVE },	/* Global registers */
+	{ -1, 0 }
+};
+
+static int
+iomux_probe(device_t dev)
+{
+
+	if (!ofw_bus_is_compatible(dev, "fsl,imx51-iomux"))
+		return (ENXIO);
+
+	device_set_desc(dev, "Freescale i.MX51 IO pins multiplexor");
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+iomux_attach(device_t dev)
+{
+	struct iomux_softc * sc;
+
+	sc = device_get_softc(dev);
+
+	if (bus_alloc_resources(dev, imx_iomux_spec, &sc->sc_res)) {
+		device_printf(dev, "could not allocate resources\n");
+		return (ENXIO);
+	}
+
+	iomuxsc = sc;
+
+	/*
+	 * XXX: place to fetch all info about pinmuxing from loader data
+	 * (FDT blob) and apply. Loader (1st one) must care about
+	 * device-to-device difference.
+	 */
+
+	return (0);
+}
+
+static void
+iomux_set_function_sub(struct iomux_softc *sc, uint32_t pin, uint32_t fn)
+{
+	bus_size_t mux_ctl_reg = IOMUX_PIN_TO_MUX_ADDRESS(pin);
+
+	if (mux_ctl_reg != IOMUX_MUX_NONE)
+		IOMUX_WRITE(sc, mux_ctl_reg, fn);
+}
+
+void
+iomux_set_function(unsigned int pin, unsigned int fn)
+{
+
+	if (iomuxsc == NULL)
+		return;
+	iomux_set_function_sub(iomuxsc, pin, fn);
+}
+
+static void
+iomux_set_pad_sub(struct iomux_softc *sc, uint32_t pin, uint32_t config)
+{
+	bus_size_t pad_ctl_reg = IOMUX_PIN_TO_PAD_ADDRESS(pin);
+
+	if (pad_ctl_reg != IOMUX_PAD_NONE)
+		IOMUX_WRITE(sc, pad_ctl_reg, config);
+}
+
+void
+iomux_set_pad(unsigned int pin, unsigned int config)
+{
+
+	if (iomuxsc == NULL)
+		return;
+	iomux_set_pad_sub(iomuxsc, pin, config);
+}
+
+#ifdef notyet
+void
+iomux_set_input(unsigned int input, unsigned int config)
+{
+	bus_size_t input_ctl_reg = input;
+
+	bus_space_write_4(iomuxsc->iomux_memt, iomuxsc->iomux_memh,
+	    input_ctl_reg, config);
+}
+#endif
+
+void
+iomux_mux_config(const struct iomux_conf *conflist)
+{
+	int i;
+
+	if (iomuxsc == NULL)
+		return;
+	for (i = 0; conflist[i].pin != IOMUX_CONF_EOT; i++) {
+		iomux_set_pad_sub(iomuxsc, conflist[i].pin, conflist[i].pad);
+		iomux_set_function_sub(iomuxsc, conflist[i].pin,
+		    conflist[i].mux);
+	}
+}
+
+#ifdef notyet
+void
+iomux_input_config(const struct iomux_input_conf *conflist)
+{
+	int i;
+
+	if (iomuxsc == NULL)
+		return;
+	for (i = 0; conflist[i].inout != -1; i++) {
+		iomux_set_inout(iomuxsc, conflist[i].inout,
+		    conflist[i].inout_mode);
+	}
+}
+#endif
+
+static device_method_t imx_iomux_methods[] = {
+	DEVMETHOD(device_probe,		iomux_probe),
+	DEVMETHOD(device_attach,	iomux_attach),
+
+	DEVMETHOD_END
+};
+
+static driver_t imx_iomux_driver = {
+	"imx_iomux",
+	imx_iomux_methods,
+	sizeof(struct iomux_softc),
+};
+
+static devclass_t imx_iomux_devclass;
+
+EARLY_DRIVER_MODULE(imx_iomux, simplebus, imx_iomux_driver,
+    imx_iomux_devclass, 0, 0, BUS_PASS_BUS - 1);
+