Author: gonzo
Date: Fri Nov 13 23:47:41 2015
New Revision: 290807
URL: https://svnweb.freebsd.org/changeset/base/290807
Log:
- Add driver for System-Reset-Controler i.MX6 module
- Add API function to reset IPU1
Added:
head/sys/arm/freescale/imx/imx6_src.c (contents, props changed)
head/sys/arm/freescale/imx/imx6_src.h (contents, props changed)
Modified:
head/sys/arm/freescale/imx/files.imx6
Modified: head/sys/arm/freescale/imx/files.imx6
==============================================================================
--- head/sys/arm/freescale/imx/files.imx6 Fri Nov 13 23:14:39 2015
(r290806)
+++ head/sys/arm/freescale/imx/files.imx6 Fri Nov 13 23:47:41 2015
(r290807)
@@ -19,6 +19,7 @@ arm/freescale/imx/imx6_ccm.c standard
arm/freescale/imx/imx6_machdep.c standard
arm/freescale/imx/imx6_mp.c optional smp
arm/freescale/imx/imx6_pl310.c standard
+arm/freescale/imx/imx6_src.c standard
arm/freescale/imx/imx_iomux.c standard
arm/freescale/imx/imx_machdep.c standard
arm/freescale/imx/imx_gpt.c standard
Added: head/sys/arm/freescale/imx/imx6_src.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/freescale/imx/imx6_src.c Fri Nov 13 23:47:41 2015
(r290807)
@@ -0,0 +1,173 @@
+/*-
+ * Copyright (c) 2015 Oleksandr Tymoshenko <go...@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("$FreeBSD$");
+
+/*
+ * System Reset Control for iMX6
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+
+#include <arm/freescale/imx/imx6_src.h>
+
+#define SRC_SCR 0
+#define SW_IPU1_RST (1 << 3)
+
+struct src_softc {
+ device_t dev;
+ struct resource *mem_res;
+};
+
+static struct src_softc *src_sc;
+
+static inline uint32_t
+RD4(struct src_softc *sc, bus_size_t off)
+{
+
+ return (bus_read_4(sc->mem_res, off));
+}
+
+static inline void
+WR4(struct src_softc *sc, bus_size_t off, uint32_t val)
+{
+
+ bus_write_4(sc->mem_res, off, val);
+}
+
+int
+src_reset_ipu()
+{
+ uint32_t reg;
+ int timeout = 10000;
+
+ if (src_sc == NULL)
+ return (-1);
+
+ reg = RD4(src_sc, SRC_SCR);
+ reg |= SW_IPU1_RST;
+ WR4(src_sc, SRC_SCR, reg);
+
+ while (timeout-- > 0) {
+ reg = RD4(src_sc, SRC_SCR);
+ if (reg & SW_IPU1_RST)
+ DELAY(1);
+ else
+ break;
+ }
+
+ if (timeout < 0)
+ return (-1);
+ else
+ return (0);
+}
+
+static int
+src_detach(device_t dev)
+{
+ struct src_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ if (sc->mem_res != NULL)
+ bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res);
+
+ return (0);
+}
+
+static int
+src_attach(device_t dev)
+{
+ struct src_softc *sc;
+ int err, rid;
+
+ sc = device_get_softc(dev);
+ err = 0;
+
+ /* Allocate bus_space resources. */
+ rid = 0;
+ sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (sc->mem_res == NULL) {
+ device_printf(dev, "Cannot allocate memory resources\n");
+ err = ENXIO;
+ goto out;
+ }
+
+ src_sc = sc;
+
+ err = 0;
+
+out:
+
+ if (err != 0)
+ src_detach(dev);
+
+ return (err);
+}
+
+static int
+src_probe(device_t dev)
+{
+
+ if ((ofw_bus_is_compatible(dev, "fsl,imx6q-src") == 0) &&
+ (ofw_bus_is_compatible(dev, "fsl,imx6-src") == 0))
+ return (ENXIO);
+
+ device_set_desc(dev, "Freescale i.MX6 System Reset Controller");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static device_method_t src_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, src_probe),
+ DEVMETHOD(device_attach, src_attach),
+ DEVMETHOD(device_detach, src_detach),
+
+ DEVMETHOD_END
+};
+
+static driver_t src_driver = {
+ "src",
+ src_methods,
+ sizeof(struct src_softc)
+};
+
+static devclass_t src_devclass;
+
+DRIVER_MODULE(src, simplebus, src_driver, src_devclass, 0, 0);
Added: head/sys/arm/freescale/imx/imx6_src.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/freescale/imx/imx6_src.h Fri Nov 13 23:47:41 2015
(r290807)
@@ -0,0 +1,34 @@
+/*-
+ * Copyright (c) 2015 Oleksandr Tymoshenko <go...@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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __IMX6_SRC_H__
+#define __IMX6_SRC_H__
+
+int src_reset_ipu(void);
+
+#endif /* __IMX6_SRC_H__ */
_______________________________________________
svn-src-all@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
